JP6452000B2 - Bathtub equipment - Google Patents

Description

  The present invention relates to a bathtub apparatus, and more particularly, to a bathtub apparatus provided in a bathtub storing hot water.

Conventionally, as described in Patent Document 1, for example, bath water is pumped from a water inlet that is attached to a bathtub and is located inside the bathtub, and discharged from an upper water outlet and a lower water outlet. There is known a water discharging device for circulating bathtub water.
In such a water discharge device, the bathtub water is led from the water supply port to the common water conduit via the water supply channel and one pump, and the common water conduit is branched into the upper water conduit and the lower water conduit. The upper spout is designed to discharge water from the upper water conduit by changing the bath water supplied from the upper water conduit into belt-shaped water, and the lower spout is designed to bubble jet the bathtub water supplied from the lower water conduit. Yes.

Japanese Patent Laid-Open No. 2006-73444

However, in the water discharge device as described above, low-speed and large-flow discharge is performed from the upper discharge port around the user's shoulder, and high-speed and low-flow discharge is attempted from the lower discharge port to the user's waist. In this case, the pressure loss of the flow channel on the lower water discharge port side that discharges water at a high speed and a small flow rate is extremely larger than the pressure loss on the flow channel on the upper water discharge port side that discharges water at a low speed and a large flow rate. Therefore, when discharging water from both outlets simultaneously, the supply of bathtub water to both outlets is greatly biased, while the water discharge flow rate on the upper water discharge side increases, while the water discharge flow rate on the lower water discharge side is insufficient, There was a problem that the massage effect by high-speed, small-flow water discharge became very weak.
For this reason, conventionally, switching is performed so that only one of the water discharge from the upper water discharge port that discharges water at a low speed and a large flow rate and the water discharge from the lower water discharge port that discharges water at a high speed and a small flow rate are performed simultaneously. In this way, the water discharge flow rate on the lower water discharge port side is insufficient to prevent the water discharge having a weak massage effect from being performed.

  Therefore, the present invention provides the first water discharger so that the flow rate of hot water discharged from the first water discharger is higher than the flow rate of hot water discharged from the second water discharger. It aims at providing the bathtub apparatus which can be simultaneously discharged from a 2nd water discharging part.

In order to achieve the above object, the present invention is a bathtub device provided in a bathtub for storing hot water, which sucks hot water in the bathtub and supplies the hot water to a downstream pump downstream flow path. A first flow path branched from the pump downstream flow path, a second flow path branched from the pump downstream flow path, and a first water discharging the hot water supplied from the first flow path into the water in the bathtub 1 water discharger, a second water discharger for discharging hot water supplied from the second flow path into the bathtub from above the water surface of the bathtub, a control part for controlling the pump, and a jet provided on the second flow path A pump unit, and the water outlet of the second water discharger has a larger opening than the water outlet of the first water discharger, and the jet pump unit stores hot water drawn by the jet pump action. Jet pump water reservoir and jet A flow path section that is formed between the top pump water storage section and a water supply source different from the bathtub or the bathtub and introduces hot water in the bathtub or a hot water source different from the bathtub into the jet pump water storage section, and a jet An injection section having a flow path diameter smaller than the flow path diameter of the second flow path upstream of the pump water storage section and accelerating the hot water supplied to the second flow path and injecting it into the jet pump water storage section; And the second flow path on the downstream side of the jet pump water storage section is formed such that the flow path diameter of the second flow path on the downstream side is larger than the flow path diameter of the injection section. Due to the jet pump action that draws hot water in the jet pump water reservoir by hot water jetted from the hot water, a flow rate of hot water larger than the flow rate of hot water injected from the jet part is transferred to the second flow path downstream of the jet pump water reservoir. To supply The hot water supplied from the pump is configured such that the flow rate of hot water discharged from the first water discharger is higher than the flow rate of hot water discharged from the second water discharger. It is characterized by being discharged simultaneously.
In this invention comprised in this way, by providing a jet pump unit on a 2nd flow path, the pressure loss of the flow path from a 1st flow path to a 1st water discharge part, and a 2nd water discharge from a 2nd flow path Since the difference between the pressure loss of the flow path leading to the section can be made relatively small, the hot water supplied from the common pump is largely biased and supplied to either the first flow path or the second flow path. 1st water discharging part so that the flow rate of hot water discharged from the first water discharging part is higher than the flow rate of hot water discharged from the second water discharging part. And the second water discharger can simultaneously discharge water.

In the present invention, preferably, the flow path section of the jet pump unit is a bathtub water communication flow path section that is formed between the jet pump water storage section and the bathtub and introduces hot water from the bathtub into the jet pump water storage section. .
In the present invention configured as described above, the hot water in the bathtub is supplied from the bathtub water communication channel portion to the jet pump without separately providing a dedicated water supply source for supplying hot water to the jet pump water storage portion of the jet pump unit. It can introduce | transduce into a water storage part and can simplify the whole structure of a bathtub apparatus. In addition, since a dedicated water supply source for supplying hot water from the outside of the bathtub is not separately provided in the jet pump water storage part of the jet pump unit, the jet pump unit is more than the flow rate of hot water discharged from the first water discharge part. Even when water is discharged from the second water discharger into the bathtub, it is possible to prevent the water level in the bathtub, that is, the amount of water from increasing.

In the present invention, preferably, the communication channel inlet of the bathtub water communication channel is formed independently of the pump channel inlet of the pump upstream channel that sucks hot water in the bathtub into the pump. Has been.
In the present invention configured as described above, the flow of hot water flowing from the inside of the bathtub into the communication flow path inlet and the flow of hot water flowing from the inside of the bathtub to the pump flow path inlet are respectively independent of the inlets. Therefore, it is possible to prevent the flows from affecting each other and prevent the hot water flowing from the communication channel inlet toward the bathtub communication from being affected by being sucked into the pump channel inlet by the pump. The hot water can be stably supplied to the jet pump unit.

In the present invention, preferably, the bathtub forms a single inlet channel portion, and the communication channel inlet portion and the pump channel inlet portion are connected to the inlet channel portion. The channel cross-sectional area of the part is formed to be larger than the sum of the channel cross-sectional area of the communication channel inlet and the channel cross-sectional area of the pump channel inlet.
In the present invention configured as described above, the flow passage cross-sectional area of the inlet flow passage portion is larger than the sum of the flow passage cross-sectional area of the communication flow passage inlet portion and the flow passage cross-sectional area of the pump flow passage inlet portion. The flow of hot water flowing from the inside of the bathtub to the communication flow path inlet and the flow of hot water flowing from the inside of the bathtub to the pump flow path inlet are branched in the inlet flow path. Since they are formed in an independent state and relatively stably, it is possible to make it difficult for the flows to influence each other. Therefore, it can prevent more reliably that the hot water which flows toward a bathtub communication part receives the influence attracted | sucked by a pump, and can supply hot water stably by a jet pump unit.
Moreover, since one inlet channel part can be formed on the bathtub side without forming two openings of the communication channel inlet part and the pump channel inlet part, the inlet channel part is connected to the bathtub. The manufacturing work and the management work can be reduced and the risk of water leakage can be reduced by reducing the sealing part between the bathtub and the inlet channel part. it can.

In the present invention, it is preferable that the jet pump unit further includes an opening adjustment mechanism capable of adjusting an opening area of the communication channel inlet of the bathtub water communication channel.
In this invention comprised in this way, the flow rate of the hot water discharged from the 1st water discharging part is higher than the flow rate of the hot water discharged from the 2nd water discharging part for the hot water supplied from the common pump. In the bathtub apparatus that can simultaneously discharge water from the first water discharger and the second water discharger, the setting of the pump and / or the pump itself that involves changing the flow rate and flow rate of the hot water discharged from the first water discharger Without changing, the flow rate and flow rate of hot water discharged from the second water discharger can be changed with a relatively simple configuration by the opening adjustment mechanism.

In the present invention, preferably, the second water discharger is a space near a user's shoulder for bathing the bath water supplied from the pump while sitting in the bath from a position near the upper end of the bath above the water surface in the bath. Is disposed above the first water discharger.
In this invention comprised in this way, the flow rate of the hot water discharged from the 1st water discharging part is higher than the flow rate of the hot water discharged from the 2nd water discharging part for the hot water supplied from the common pump. Further, water can be discharged from the second water discharger disposed above the first water discharger to the upper part of the user's body above the first water discharger, such as the neck and shoulder.

  According to the bathtub apparatus of the present invention, the flow rate of hot water discharged from the first water discharger is higher than the flow rate of hot water discharged from the second water discharger. Water can be discharged simultaneously from the first water discharger and the second water discharger.

It is a schematic perspective view which shows the bathtub apparatus by one Embodiment of this invention. It is a top view which shows the bathtub apparatus by one Embodiment of this invention. It is a schematic sectional drawing which shows roughly the internal structure of the bathtub apparatus seen along the III-III line | wire of FIG. 2 in the state which the user is sitting in the bathtub of the bathtub apparatus by one Embodiment of this invention. It is a perspective view which shows the jet pump unit of the bathtub apparatus by one Embodiment of this invention, and the water outlet of a water discharging part. It is sectional drawing of the water discharge port of the jet pump unit and water discharge part seen along the III-III line of FIG. It is a figure explaining the jet pump effect | action in the jet pump unit of the bathtub apparatus by one Embodiment of this invention. It is a perspective view which shows a mode that the water discharging operation | movement from only a water discharging part is performed in the state which the user is sitting in the bathtub of the bathtub apparatus by one Embodiment of this invention. FIG. 2 schematically shows the internal structure of the bathtub device viewed along line III-III in FIG. 2 in a state where a user is sitting in the bathtub of the bathtub device according to the embodiment of the present invention, and only from the blow spout unit. It is a schematic sectional drawing explaining a mode that water discharge operation | movement is performed. FIG. 2 schematically shows the internal structure of the bathtub device viewed along line III-III in FIG. 2 in a state where a user is sitting in the bathtub of the bathtub device according to the embodiment of the present invention. It is a schematic sectional drawing explaining a mode that the water discharging operation performed simultaneously from a part is performed. It is sectional drawing of the bathtub seen along the XX line of FIG. The state in which the opening adjustment mechanism of the jet pump unit of the bathtub apparatus according to one embodiment of the present invention is provided in the vicinity of the communication channel inlet and the opening adjustment mechanism is adjusted to the open state that opens the communication channel inlet It is a schematic sectional drawing which shows. An opening adjustment mechanism of a jet pump unit of a bathtub apparatus according to an embodiment of the present invention is provided so as to cover a part of the communication channel inlet, and the opening adjustment mechanism covers a part of the communication channel inlet. It is a schematic sectional drawing which shows the state adjusted to the closed state. It is a top view which shows the installation position of the pump in the bathtub apparatus by one Embodiment of this invention. It is a side view which shows the installation position of the pump in the bathtub apparatus by one Embodiment of this invention.

Hereinafter, a bathtub apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.
1 is a schematic perspective view showing a bathtub apparatus according to an embodiment of the present invention, FIG. 2 is a plan view showing the bathtub apparatus according to an embodiment of the present invention, and FIG. 3 is a bathtub according to an embodiment of the present invention. FIG. 4 is a schematic cross-sectional view schematically showing the internal structure of the bathtub apparatus viewed along line III-III in FIG. 2 in a state where a user is sitting in the bathtub of the apparatus, and FIG. 4 is an embodiment of the present invention. It is a perspective view which shows the jet pump unit of the bathtub apparatus by a form, and the water outlet of a water discharging part, FIG. 5: is sectional drawing of the water outlet of the jet pump unit and water discharging part seen along the III-III line of FIG. .

As shown in FIG.1 and FIG.2, the bathtub apparatus 1 by one Embodiment of this invention is a bathtub apparatus provided in facilities, a bathhouse, a bathroom, a bathroom, etc. of a household.
A bathtub apparatus 1 according to an embodiment of the present invention is a bathtub apparatus 1 provided in a bathtub 2 that stores hot water (tub water).
The bathtub apparatus 1 according to an embodiment of the present invention sucks hot water in the bathtub 2 and supplies it to the downstream side, and discharges hot water supplied from the pump 4 into the bathtub 2 from the vicinity of the upper end of the bathtub 2. A water discharge unit 6 (second water discharge unit), a control unit 8 that controls the pump 4, a jet pump unit 10 provided on the injection unit side flow path 32 between the pump 4 and the water discharge unit 6, and the bathtub 2 A circulation flow path 14 extending from the bathtub communication opening 12 formed on the vertical wall to the water discharger 6 or a blown water discharger 16 described later, and hot water supplied from the pump 4 are supplied into the bathtub 2 from the vicinity of the center in the vertical direction of the bathtub 2. The blow water spouting unit 16 (first water discharging unit) that blows water into the flow channel, the flow channel downstream of the pump 4 in the circulation flow channel 14 into the flow channel on the jet pump unit 10 side, and the flow channel on the blow water spouting unit 16 side. And a switching valve 18 for switching. In addition, the bathtub apparatus 1 may be provided with the bathtub 2 which stores hot water (tub water).
Here, the hot water stored in the bathtub 2 is the bathtub water stored in the bathtub 2, and the term “hot water” used in the present invention is temperature-adjusted in a water supply device of the bathtub device or a water supply device of an external facility. In addition to hot water mixed with hot water and water, the temperature is adjusted by heating water from the external water supply that has already been temperature-adjusted and water from the water supply source to an appropriate temperature and mixing the water with new water. It is used to include no hot water. “Hot water” can also be expressed as “water” having different temperatures. For example, hot water is warm water having a temperature such as 40 degrees set by the user in the operation unit 38.

In the present embodiment, the bathtub 2 is a rectangular bathtub 2 having a relatively small size such that an adult user (a bather) bathes alone, but the bathtub 2 has such a size and Not only the shape but also a relatively large sized bathtub that can be filled by a plurality of people at a facility, for example, and has other shapes such as a polygonal shape, a round shape, a curved shape, etc. May be. Moreover, the bathtub 2 can be used not only as a bathtub for a normal bath but also as a bathtub for medical purposes such as a bathtub for half-body bathing and massage. In the case where the bathtub 2 is a standard bathtub where an adult user (bathing person) bathing alone, for example, used for a household unit bath or the like, the user's back and head approach the short side. In this way, assuming that the user sits down and takes a bath, the water discharger 6 is arranged on the short side. Depending on the size of the user's body, the bathtub 2 may be, for example, a state where the user is sitting, a state where the upper body is tilted to the back side, a state where the upper body is tilted to the back side, It is a hot water bath that can be bathed in a state where the upper body is greatly inclined to the back side and lies down to a state close to the back.
The bathtub 2 is connected to the bottom 2a with which the buttocks or feet of the user bathing is in contact, the vertical wall 2b in which the back of the bathing user is often in contact with the upper part of the vertical wall 2b, and the bathtub 2 The upper end part 2c which forms the upper surface of this is provided.
The upper end portion 2c is formed at a height position relatively close to the upper body of the user (the bather) H who is taking a bath, for example, the head, neck, or shoulder. For example, the upper end 2c can sit in a relaxed state in which the user H taking a bath sits with the buttocks on the bottom 2a and the back of the user H is placed on the upper end 2c. It is formed at a very high position. The upper end 2c may be formed as a substantially flat surface, or may be formed as a curved surface so as to easily match the curved shape of the head or neck.

  In addition, in the bathtub 2, in the state which is not temperature-controlled from the hot water supplied from the water heater etc. in the state which is not temperature-controlled based on operation etc. of the operation part 38 of the user H, and / or a water supply source. A water supply device (not shown) is provided that can supply supplied water and / or hot water adjusted in temperature by adjusting the mixing ratio of the hot water and water into the bathtub 2.

  As for the bathtub 2, the casing 20 is attached to the outer side. By attaching the casing to the bathtub 2, it is possible to maintain the aesthetic sense of the bathtub apparatus 1 as a whole and protect the internal electrical components and the like. The pump 4, the jet pump unit 10, each flow path, and the like, which will be described later, need to be arranged in a very limited space between the casing 20 (or the wall surface W of the bathroom) and the bathtub 2.

  The pump 4 can suck hot water in the bathtub 2 and supply it to the downstream side. The pump 4 is a pump having a function of applying pressure to the sucked hot water and feeding it. The pump 4 sucks hot water in the bathtub 2 as the impeller (not shown) directly connected to an electrically driven electric motor (not shown) rotates, and pumps the hot water downstream. The pump 4 is provided outside the bathtub 2 and inside the casing 20 (or inside the wall surface). In such a space between the casing 20 (or the wall surface W) and the bathtub 2, the pump 4, each flow path, the jet pump unit 10, and the like are disposed. ) Has many restrictions, and it is difficult to easily increase the size of the pump 4. In addition, since the space between the bathtub 2 and the casing 20 (or the wall surface W) is often relatively narrow in the upper region, if the pump 4 is to be enlarged, the pump 4 is It is necessary to install in the lower part, and the problem of residual water remaining in the pump after use (residual water that is relatively cold cold water) arises.

  As shown by an arrow F <b> 7 in FIG. 3, the water discharger 6 in this embodiment discharges hot water from the vicinity of the upper end 2 c of the bathtub 2 into the bathtub 2. The water discharger 6 is disposed in the vicinity of the upper end 2 c of the bathtub 2. The water discharger 6 is disposed above the blow water discharger 16. The water discharge part 6 is arrange | positioned above the center part of the up-down direction of the vertical wall 2b, for example, is arrange | positioned on the upper end part 2c of a center part. The water discharger 6 is a water surface of a predetermined level of hot water stored in the bathtub 2, for example, a water surface of a preset water supply level WL0 (see FIG. 3) for bathing in a normal use state, or the physical surface of the bathtub 2 It is located above the surface of the typical full water level WL1. Accordingly, the water discharger 6 forms an aerial water discharger that discharges hot water into the air (in the atmosphere). More specifically, the water discharger 6 directs the bath water to the space near the shoulder of the user H who is sitting and bathing from a position above the surface of the normal water supply level WL0 in the bath 2. Water is discharged into the bathtub 2 from the vicinity of the upper end 2c of the bathtub 2 so as to discharge water. Moreover, the water discharging part 6 is arrange | positioned in the height position within 200 mm below the upper position from the upper end part 2c of the bathtub 2, or the upper end part 2c. The water discharge part 6 may be arrange | positioned in the height position below the headrest provided in the upper end part 2c of the bathtub 2, or the height position within 200 mm below the upper end part.

  As shown in FIG. 4, in the present embodiment, the water discharge unit 6 forms a wide water discharge port 22 that is relatively long in the lateral direction. The water discharge part 6 spreads hot water like a waterfall from the water discharge port 22 formed so as to spread in the left-right direction (lateral direction with respect to the height direction) with respect to the center of the bathtub 2 toward the front side (inside the bathtub 2). Water is discharged. Specifically, the water discharger 6 is formed such that the length l in the left-right direction of the water discharge port 22 is larger than the height h in the vertical direction of the water discharge port 22 of the water discharger 6. The length l in the left-right direction of the spout 22 is formed to be approximately the average shoulder width of an adult. For example, the length l in the left-right direction of the water discharge port 22 is formed to a length such as one half of the short side length of the bathtub 2 or two thirds of the short side length of the bathtub 2. May be. For example, the length l in the left-right direction of the water discharge port 22 can be formed to a length in the range of 300 mm to 500 mm.

  As shown in FIG.4 and FIG.5, the water discharge part 6 forms the water discharge port 22 opened sideways toward the front side (the bathtub 2 inside side). The water discharge port 22 forms a rectangular water discharge port 22 that extends substantially parallel to the upper surface of the bathtub 2. Further, the water discharge portion 6 has a water discharge portion inner passage bottom surface 22 a connected to the water discharge port 22 formed substantially flat. Therefore, as shown in FIG. 7, the hot water discharged sideways flows down in a parabolic manner in the air as a flow of a strip-like (water film-like) flowing water having a substantially constant width and thickness.

  The water discharger upper surface 6a of the water discharger 6 has a relaxed posture in which the user H places his head (for example, the back of the head) on the water discharger upper surface 6a (for example, the head of the body is placed on the upper surface of the water discharger 6 and the back is a vertical wall 2b and a curved surface that gently descends toward the inside of the bathtub 2 so as to be able to take a relatively easy posture (sitting on the bottom 2a). The water discharger upper surface 6a can fulfill the function of a headrest that supports the head of the user H. When the user H puts his head on the water discharger upper surface 6a and takes a relaxed posture, the hot water discharged from the water discharger 6 hits the neck and shoulders. Furthermore, when the user H puts his head on the water discharger upper surface 6a and takes a relaxed posture, the hot water discharged from the water discharger 6 spreads from the shoulder to the front side (chest side) of the user H. And / or spread from the shoulder to the back side (back side) of the user H. Therefore, not only the neck and shoulders but also the chest, abdomen, back and waist can be warmed with hot water. For example, a water discharge state where a part of hot water discharged from the water discharge unit 6 as described above is discharged toward the user's shoulder is referred to as a shoulder water discharge state.

  The circulation flow path 14 is connected to the inlet flow path 24 (inlet flow path section) extending from the bathtub communication port portion 12 and is connected to the inlet flow path 24 and is relatively obliquely upward from the inlet flow path 24 toward the bathtub communication section 42. A communication channel 26 extending over a short distance, a pump upstream channel 28 connected to the inlet channel 24 and extending downward from the inlet channel 24 toward the pump 4, and a switching valve connected to the downstream side of the pump 4 A pump downstream channel 30 extending to 18, an injection unit channel 32 (second channel) branched from the pump downstream channel 30 and extending from the switching valve 18 toward the jet pump unit, and a bathtub communication unit 42. Bath water introduction flow path 34 (second flow path) extending from the water discharge section 6 to the water discharge section 6, and the blow water discharge section side flow path branched from the pump downstream flow path 30 and extending from the switching valve 18 toward the blow water discharge section 16. 36 ( Is provided with a first flow path), the.

  The control unit 8 is connected to an operation unit 38 operated by the user H. The control unit 8 is electrically connected to the pump 4, the switching valve 18, the operation unit 38, the air introduction switching valve 58, the pressure sensor 40, and the like, and can transmit and receive electrical signals to and from each other. The part can be electrically operated. The control unit 8 is attached to a wall surface W in the bathroom. The operation unit 38 is an operation unit such as an operation panel that can perform an operation desired by the user H, and is attached to a wall surface W in the bathroom. Information on the operation of the operation unit 38 by the user H is sent to the control unit 8 by an electrical signal. Such a control part 8 and the operation part 38 can also be provided in the wall surface etc. outside a bathroom. The control unit 8 includes a storage device (not shown) such as a memory and an arithmetic device (not shown) that can appropriately control the bathtub device 1.

When the control unit 8 determines that the water level in the bathtub 2 is equal to or lower than the predetermined water level WL2 where air may be introduced from the bathtub communication port 12, the control is performed so that the pump 4 is not operated. The predetermined water level WL2 is, for example, the water level at the height of the upper end of the bathtub communication opening 12. In the state where the water level in the bathtub 2 is less than or equal to WL2, if the air is introduced into the bathtub communicating part 42 from the bathtub communicating port part 12 without a relatively large amount, the temperature of the hot water discharged from the water discharging part 6 decreases. In order to cause a crack in the flow of hot water, the pump 4 is not operated when it is determined that the water level in the bathtub 2 is lower than WL2.
Moreover, when the control part 8 judges that the water level in the bathtub 2 is the water level below the water level WL3 of the height of the blow spout part 16, the high speed blow spout from the blow spout part 16 is performed in water. Therefore, the pump 4 is controlled so as not to operate (see FIG. 8).

  In the inlet channel 24, a pressure sensor 40 for detecting the water pressure is provided. The water pressure detected by the pressure sensor 40 is transmitted to the control unit 8, and the control unit 8 can determine the water level (water amount) in the bathtub 2 based on the water pressure detected by the pressure sensor 40. Note that the pressure sensor 40 is not limited to the inlet flow path 24, and may be attached to other positions that receive water pressure corresponding to the water level in the bathtub 2, such as the communication flow path 26 and the pump upstream flow path 28. In still another embodiment, the water level (water amount) in the bathtub 2 may be measured by the water level sensor without using the pressure sensor 40. In still another embodiment, the arrangement of the pressure sensor 40 is omitted, and the hot water in the bathtub 2 is measured by measuring the load of the electric motor of the pump 4 (variation in the amount of current flowing through the electric motor according to the load). You may measure the water level (water amount). Variations in the amount of current flowing through the electric motor are measured by a current sensor or the like, and measurement information is sent from the current sensor to the control unit 8.

The blow water spouting portion 16 is provided at a height position near the center in the vertical direction of the vertical wall 2 b of the bathtub 2. In this embodiment, the blow water spouting part 16 is provided with two blow water discharging parts 16 in the vertical wall 2b of the bathtub 2 on the water discharging part 6 side. Note that the number of blow water spouting units 16 is not limited to two, but may be one, and may be three or more. For example, the two blow water spouting portions 16 are arranged at symmetrical positions that are shifted to the left and right sides with respect to the bathtub communication port portion 12 in the left-right direction of the bathtub 2 (left-right direction toward the vertical wall 2b).
The blow water spouting section 16 is formed so that the diameter of the flow path inside thereof is narrower than the diameter of the blow water spouting section side flow path 36 on the upstream side of the blow water discharging section 16. The blow water spouting unit 16 is attached to the vertical wall 2b of the bathtub 2 in a horizontal direction (for example, a horizontal direction close to the horizontal), and discharges high-speed blow water spouting from the blow water spouting unit 16 in the horizontal direction. The blow water spouting unit 16 is connected to the blow water discharging unit side flow path 36 on the downstream side of the pump 4 and directly jets the water flow pumped from the pump 4. Therefore, the blow water spouting unit 16 forms a relatively small flow rate and high speed water discharging flow corresponding to the amount of pumping water pumped by the pump.

  The blow water spouting unit 16 is arranged at a height position near the center in the vertical direction of the vertical wall 2b of the bathtub 2, that is, a height position corresponding to the waist and back of a general user H, and the blow water spouting unit. The blown water discharged from the user 16 toward the user H collides with the user's H waist and back, thereby pressing the user H's waist and back and producing a massage effect. The blow water spouting unit 16 can perform the blow water spouting when the control unit 8 determines that the blow water spouting unit 16 is under the water surface of the bathtub 2. It is composed. Thus, since the blow water spouting unit 16 discharges water into the hot water of the bathtub 2 and causes the water flow to act on the user H, water remaining from the blow water spouting unit 16 is discharged from the blow water spouting unit 16 at a relatively cool time, such as in the pump 4. Even in such a case, the blown water mixes with the hot water in the bathtub 2 and collides with the user H, so that the user H is less likely to feel an interval of cold water.

  The blow water discharger 16 also functions as a stirring water discharger that discharges hot water having a flow rate higher than the flow rate of hot water discharged from the water discharger 6 and stirs the bathtub water stored in the bathtub 2. Since the blow water spouting unit 16 performs high-speed blow water spouting in the water, the hot water in the bathtub can be vigorously stirred. The blow water spouting portion 16 is disposed in a region near the vertical wall 2b of the bathtub 2 to which the communication flow channel 26 of the bathtub water communication flow channel portion 47 is connected. The blow water spouting portion 16 is disposed on the upper side of the vertical wall 2b in the vicinity of the bathtub communicating port portion 12 of the bathtub water communicating channel portion 47. Thus, the blow water spouting part 16 and the bathtub communication opening part 12 communicating with the communication flow path 26 are disposed relatively close along the same vertical wall 2b. Therefore, the stirring effect of the hot water by the water discharged from the blow water discharge portion 16 can be efficiently generated in the region near the bathtub communication port portion 12, and the hot water having a relatively high temperature is supplied to the bathtub water communication flow channel portion 47 and the bathtub communication portion. 42 can be supplied.

  The switching valve 18 can selectively open and close both or any one of the injection unit side flow channel 32 and the blow water discharge unit side flow channel 36. Therefore, the switching valve 18 supplies hot water supplied from the pump downstream flow path 30 downstream of the pump 4 to both or one of the injection section side flow path 32 and the blow water discharge section side flow path 36. Can be supplied selectively. When the injection unit side flow path 32 and the blow water discharge unit side flow path 36 are opened at the same time, the switching valve 18 can freely change the flow rate distribution ratio. The switching valve 18 is electrically connected to the control unit 8 so that the switching valve 18 can be electrically opened and closed in response to the operation of the operation unit 38 of the user H. Accordingly, the user H can selectively cause both or any one of the water discharged from the water discharger 6 and the water discharged from the blow water discharger 16 via the jet pump unit 10 to be executed.

Next, the jet pump unit 10 will be described with reference to FIGS. 3 to 6, 13, and 14.
FIG. 6 is a view for explaining the jet pump action in the jet pump unit of the bathtub apparatus according to the embodiment of the present invention, and FIG. 13 is a top view showing the installation position of the pump in the bathtub apparatus according to the embodiment of the present invention. FIG. 14 is a side view showing the installation position of the pump in the bathtub apparatus according to one embodiment of the present invention.

The jet pump unit 10 has a jet pump water storage part 41 in which hot water drawn by a jet pump action is stored, and the hot water supplied from the pump 4 through the bathtub communication part 42 disposed on the downstream side of the pump 4. A jet nozzle 44 (injection unit) that injects into the water, an air introduction port 45 that is disposed on the water discharge direction side of the jet nozzle 44 and that introduces air into the flow of hot water injected from the jet nozzle 44, and a bathtub communication unit 42 The bathtub water communication channel 47 that is formed between the bathtub water introduction part 46 that extends downstream of the jet pump water storage part 41 and the bathtub 2 and introduces the bathtub water of the bathtub 2 into the jet pump water storage part 41. And.
The jet pump unit 10 can be formed with a relatively simple structure and a relatively small structure even when trying to supply a large flow rate to the water discharger 6. It can be placed in a constrained small space.

  In this embodiment, the jet pump water storage part 41 is a bathtub communication part 42 that is communicated with the bathtub 2 and into which the hot water of the bathtub 2 flows. The jet pump water storage unit 41 may be connected to a water supply source or a water supply device other than the bathtub 2 and hot water supplied from the water supply source or the like may flow in to form a storage unit. That is, the reservoir may be formed such that hot water is not supplied from the bathtub 2 to the jet pump water reservoir 41 and hot water is supplied to the jet pump unit 10 from another external water supply source or the like.

  The bathtub communication part 42 forms a box-shaped water storage chamber and is connected to the downstream end of the communication flow path 26. The bathtub communication part 42 is arrange | positioned in the back region of the back side of the bathtub communication opening part 12 formed in the vertical wall 2b of the bathtub 2, and the vertical wall 2b. The bathtub communication portion 42 is disposed in a relatively narrow region between the vertical wall 2b and the wall surface W. Moreover, the bathtub communication part 42 is provided in the edge part of the communication flow path 26 extended straight in the back | inner side of the bathtub communication port part 12, and it arrange | positions so that the distance from the bathtub communication port part 12 to the bathtub communication part 42 may become as short as possible. Has been. The bathtub communication part 42 communicates with the bathtub 2 and the hot water of the bathtub 2 flows in. Further, a jet nozzle 44 is attached so as to penetrate the bottom surface 42a of the bathtub communication portion 42, and an opening is formed in the upper surface 42b of the bathtub communication portion 42 facing the jet nozzle 44. The bathtub water introduction portion 46 is formed from this opening. Extends upward. The bathtub communication portion 42 is communicated with a water storage region (region where the user H takes a bath) in the bathtub 2 through an inlet channel 24 and a communication channel 26 extending from the bathtub communication port 12. Therefore, when hot water is stored in the bathtub 2, the hot water flows into the bathtub communication part 42 and is stored. In a state where hot water is not ejected from the jet nozzle 44, the hot water can go back and forth between the bathtub communicating portion 42 and the water storage area in the bathtub 2. The temperature of the hot water in the bathtub communication part 42 and the water storage area in the bathtub 2 is substantially the same as the temperature of the hot water.

  The bathtub communication part 42 and the bathtub water communication flow path part 47 which will be described later are arranged at a height position equal to or lower than an intermediate height position h1 between the bottom part 2a and the upper end part 2c of the bathtub 2. That is, the bathtub communication part 42 and the bathtub water communication flow path part 47 to be described later are disposed at a height position between the intermediate height position h1 and the bottom 2a of the bathtub 2. Therefore, the bather who is stored in the bathtub 2 is half-bathed such that the bathtub water stored in the intermediate height position h1 is lower than the intermediate height position h1 or lower than the intermediate height position h1, for example. Even if it is a use condition, the bathtub communication part 42 and the bathtub water communication flow-path part 47 are filled with hot water, and the bather's shoulder etc. are supplied from the water discharge part 6 using the jet pump unit 10 with the hot water of a bathtub. Can be discharged.

As shown in FIGS. 3 and 9 and the like, the jet pump unit 10 is disposed on the back side (wall surface W side) of the bathtub communication opening 12 at the center in the left-right direction on the side where the water discharger 6 of the bathtub 2 is disposed. Has been. The jet pump unit 10 is formed such that the height positions of the jet nozzle 44 and the bathtub communication portion 42 are lower than the intermediate height position h1. Moreover, the jet pump unit 10 is formed so that the bathtub water introduction part 46 extends from the vicinity of the upper end part 2c of the bathtub 2 to a position lower than the intermediate height position h1. In this way, by configuring the jet pump unit 10 so that the jet nozzle 44 and the bathtub communication portion 42 are intentionally disposed at a low position, the amount of stored hot water in the bathtub 2 is small, that is, even when the stored water level is low. Water can be discharged from the water discharger 6.
In this way, the jet pump unit 10 is arranged at the lower center of the bathtub 2 in the left-right direction. However, as shown in FIG. 13, the pump 4 is arranged in the left-right direction on the side where the water discharger 6 of the bathtub 2 is arranged. It can arrange | position in the side part edge part outer side rather than the center. As shown in FIG. 14, the pump 4 is disposed on the lower side of the bathtub 2 and inside the casing 20. Thus, the pump 4 can be arranged on the side of the bathtub 2, and the hot water flowing into the pump upstream flow path 28 from the bathtub communication port 12 is disposed on the pump 4 arranged on the side of the bathtub 2. The hot water guided and pumped from the pump 4 flows through the pump downstream channel 30 to the jet pump unit 10 disposed in the center or the blow water discharger side channel 36 near the center.

  In the state where hot water is stored, the hot water has a property that hot water is relatively easy to move upward in hot water and relatively cold hot water is easy to move downward in hot water. Here, since the bathtub communication part 42 is arrange | positioned in the position higher than the bathtub communication port part 12, the comparatively hot water in hot water moves to the bathtub communication part 42 in a position higher than the bathtub communication port part 12. It is easy to make it difficult for the temperature of the hot water in the bathtub communication portion 42 to be cooled, and it is possible to easily maintain the temperature of the hot water.

The jet nozzle 44 injects hot water through the bathtub communicating portion 42 and toward the bathtub water introducing portion 46 to induce a jet pump action. The jet nozzle 44 is formed so that the diameter of the flow path inside thereof is narrower than the diameter of the jet section side flow path 32 upstream of the jet nozzle 44. Accordingly, the hot water pumped by the pump 4 is further accelerated in the jet nozzle 44 and ejected from the jet nozzle 44 as a high-speed hot water flow. The jet nozzle 44 is directed toward the bathtub communication part 42 and the bathtub water introduction part 46. Therefore, the jet nozzle 44 can inject a high-speed jet flow having linear directivity toward the inside of the bathtub communication part 42 and the bathtub water introduction part 46. The high-speed jet flow ejected from the outlet opening of the jet nozzle 44 is gradually increased in flow rate and gradually reduced in flow rate by drawing hot water in the bathtub communication portion 42.
Since the jet pump unit 10 injects hot water from the jet nozzle 44 with a narrowed flow path diameter and flows it into the bathtub water introduction section 46 through the bathtub communication section 42, a pressure loss of a predetermined magnitude occurs. The magnitude of this pressure loss can be made relatively close to the magnitude of the pressure loss when the hot water is discharged from the blow water spouting section 16, the resistance of the flow path through the jet pump unit 10, and the blow water spouting section 16. It is possible to adjust the flow rate and the flow velocity while allowing hot water to flow through both channels at the same time by making the resistance of the channel to reach relatively close.

  As shown in FIG. 5, the air introduction port 45 is disposed on the front side in the water discharge direction of the jet nozzle 44 (downstream side of the jet nozzle 44). The air introduction port portion 45 is disposed in the vicinity of the downstream side of the jet nozzle 44 and is formed to be drawn into the bath water into which air has been jetted by the jet pump action of the bath water jetted from the jet nozzle 44. The air introduction port portion 45 is attached so as to penetrate from the outside of the bathtub communication portion 42 to the inside of the bathtub communication portion 42, and forms an air introduction port portion 45 extending into the bathtub communication portion 42. The air introduction port 45 forms a cylindrical internal flow path, and air is introduced into the internal flow path.

  The air introduction port 45 is formed in the jet direction of the jet nozzle 44 (vertical direction in the present embodiment), and the inlet 46a of the bathtub water introduction unit 46 that extends from the bathtub communication unit 42 toward the water discharge unit 6 in the jet direction. It is arranged between. More specifically, the air introduction port portion 45 is disposed closer to the jet nozzle 44 side than an intermediate point between the front end 44a forming the outlet opening of the jet nozzle 44 and the inlet portion 46a. . In other words, the air introduction port 45 is arranged such that the distance between the air introduction port 45 and the tip 44a of the jet nozzle 44 is shorter than the distance between the air introduction port 45 and the inlet 46a. Has been. In this way, the air introduction port 45 is a jet nozzle 44 having a higher flow rate of the bath water jetted from the jet nozzle 44 and upstream of the inlet 46a of the bath water introduction portion 46 in the jet direction of the jet nozzle 44. Is disposed in a region in the vicinity of the tip 44a.

  Note that the air inlet 45 may be disposed closer to the inlet 46a than an intermediate point between the tip 44a of the jet nozzle 44 and the inlet 46a. In this case, the flow rate of the jet flow ejected from the jet nozzle 44 is increased by drawing hot water in the bathtub communication portion 42, but the flow velocity is decreased as the flow rate is increased. The amount of air introduced into the hot water from the introduction port 45 can be suppressed to a relatively low introduction amount.

  The air introduction port 45 extends from the side of the jet nozzle 44 to the vicinity of the front of the jet nozzle 44 in the lateral direction (the left-right direction in the present embodiment) with respect to the jet direction of the jet nozzle 44. More specifically, the air introduction port portion 45 extends laterally from the side surface 42c with respect to the bottom surface 42a of the bathtub communicating portion 42 where the jet nozzle 44 is provided, and the extended region C of the outlet opening of the jet nozzle 44. It is formed to extend to the vicinity. The extension region C is defined as a virtual region when the outlet opening of the jet nozzle 44 is linearly extended toward the downstream side. The air introduction port portion 45 extends from the side surface 42 c to the vicinity of the front surface in the jet direction of the jet nozzle 44. The air introduction port portion 45 extends between the side surface 42 c and the central axis of the jet nozzle 44 in the bathtub communication portion 42. Therefore, the air introduction port 45 extends from the side surface 42 c to the front front of the jet nozzle 44 so as to be orthogonal to the jet nozzle 44. As described above, the air introduction port 45 extends in the lateral direction with respect to the jet direction of the jet nozzle 44 to a region near the front in the jet direction in which the flow rate of the bath water jetted from the jet nozzle 44 is higher than the side surface 42c and from the jet nozzle 44. ing.

  A front end opening 45 a at the front end of the air inlet port 45 is disposed at a position slightly closer to the side surface 42 c than the front surface of the front end of the jet nozzle 44. The tip opening 45a is formed as an oblique opening such that the opening portion on the downstream side (tub water introduction portion 46 side) is larger than the opening portion on the upstream side (jet nozzle 44 side). Due to the high-speed flow of hot water from the jet nozzle 44 as indicated by the arrow F4, negative pressure is generated by the action of the jet pump, and air is drawn (sucked) from the tip opening 45a of the air inlet 45, and the Fine air bubbles are mixed in.

  An air introduction pipe 56 is connected to the air introduction port 45, and an air introduction switching valve 58 that can open and close an air introduction path is provided on the air introduction pipe 56. An air opening (not shown) for taking in air from the bathroom is formed at the other end of the air introduction pipe 56. In the present embodiment, since air is sucked into the hot water by the negative pressure due to the jet pump action, a device such as an air pump for sending air to the air introduction pipe 56 can be omitted. Control of opening and closing of the air introduction switching valve 58 is electrically performed by the control unit 8. That is, the execution and stop (on / off) of air supply can be switched by opening and closing the air introduction switching valve 58. When the user H performs the air supply, the water discharged from the water discharger 6 provided in the vicinity of the upper end of the bathtub 2, for example, the water discharged from the shoulder bath is mixed with air so that the discharged water hits the bather. Water discharge stimulation (feeling of water discharge) can be softened. In addition, when the user H stops or stops the air supply, the air discharge is not mixed, and the water discharge stimulation (feeling of water discharge) when the water discharge hits the bather can be strengthened. In this way, the amount of minute air bubbles introduced into the hot water from the air introduction port 45 is controlled by the control unit 8. Note that the air introduction switching valve 58 may be omitted and air may be introduced naturally. Further, according to the pulsation mode of the control unit 8, the air introduction switching valve 58 is automatically switched on / off periodically or alternately according to other conditions, and the amount of air mixed in the water discharged from the water discharge unit 6 is automatically set. Thus, the stimulus given to the user H by the water discharge can be changed according to a predetermined condition. For example, such a pulsation mode makes it possible to further increase the water discharge stimulation effect and massage effect of the shoulder bath. Note that the air introduction system such as the air introduction port 45 and the air introduction switching valve 58 may be omitted so that the bathtub apparatus 1 is not mixed with fine air.

  The bathtub water introduction part 46 forms at least a part of the bathtub water introduction channel 34. The bathtub water introduction part 46 extending from the bathtub communication part 42 toward the water discharge part 6 forms a flow path extending linearly on an extension line in the direction of the opening of the jet nozzle 44. The bathtub water introduction part 46 forms a circular channel extending linearly upward from the upper surface of the bathtub communication part 42. The flow path diameter of the bathtub water introduction part 46 is formed larger than the flow path diameter of the jet nozzle 44. Therefore, the flow passage cross-sectional area of the bathtub water introducing portion 46 is also formed larger than the flow passage cross-sectional area of the jet nozzle 44. Therefore, the bathtub water introduction part 46 is formed in a size that can introduce hot water having a flow rate higher than the flow rate of hot water injected from the jet nozzle 44. The jet nozzle 44, the bathtub communication part 42, and the bathtub water introduction part 46 form a linear flow path extending in one direction, and form a high-speed flow along the direction of the high-speed jet flow ejected from the jet nozzle 44. can do.

  In addition, the bathtub water introduction flow path 34 forms an expanded portion 48 that expands in the left-right direction at the upper portion thereof, and the hot water that expands in the left-right direction in the expanded portion 48 is laterally (for example, laterally close to the horizontal). ) Can discharge water. The development part 48 forms a flow path such that the cross-sectional area of the flow path gradually increases above. The downstream side of the bathtub water introduction channel 34 is connected to the water discharger 6.

Next, the bathtub water communication channel 47, the pump upstream channel 28, the opening adjustment mechanism 54, and the like will be described with reference to FIGS.
FIG. 10 is a cross-sectional view of the bathtub as viewed along the line III-III in FIG. 2, and FIG. 11 is a diagram illustrating that the opening adjustment mechanism of the jet pump unit of the bathtub apparatus according to the embodiment of the present invention FIG. 12 is a schematic cross-sectional view showing a state in which the opening adjustment mechanism is provided in the vicinity and is adjusted to an open state in which the communication channel inlet is opened, and FIG. Schematic sectional view showing a state in which the opening adjustment mechanism is provided so as to cover a part of the communication channel inlet and the opening adjustment mechanism is adjusted to a closed state so as to cover a part of the communication channel inlet It is.

  The bathtub water communication channel 47 includes a communication channel 26 between the bathtub communication unit 42 and the bathtub 2, and a communication channel inlet 50 that forms the inlet portion on the bathtub 2 side. Since the bathtub water communication flow path portion 47 is provided, the bathtub water of the bathtub 2 can be supplied without separately providing a dedicated water supply source for supplying hot water to the jet pump water storage portion 41 of the jet pump unit 10. The water can be introduced into the jet pump water reservoir 41 from the water communication channel 47, and the overall structure of the bathtub device 1 can be simplified. In addition, since a dedicated water supply source for supplying hot water from the outside of the bathtub 2 is not separately provided in the jet pump water storage unit 41 of the jet pump unit 10, water is discharged from the blow water discharge unit 16 by the jet pump unit 10. Even when water is discharged from the water discharger 6 into the bathtub 2 at a flow rate greater than the flow rate of the bathtub water, it is possible to prevent an increase in the water level in the bathtub 2, that is, the amount of water, by receiving additional water supply from the outside. it can.

  The communication channel inlet 50 is formed so as to be connected to the inlet channel 24 and is opened in the inlet channel 24. The communication channel inlet 50 is formed so as to open toward the inlet channel 24 and the inner region A (the bather's bathing region) of the bathtub 2. As shown in FIG. 10, when the inside of the inlet channel 24 (the back side of the inlet channel 24) is viewed from the inner region A of the bathtub 2, the communication channel inlet 50 is located behind the bathtub communication port 12. In addition, a circular opening is formed in the upper part of the inlet channel inner vertical wall 24 a in the inlet channel 24. The cross-sectional area of the flow path of the communication flow path inlet 50 is formed so as to be larger than the cross-sectional area of the flow path of the bathtub water introduction part 46.

  Here, the communication flow path inlet section 50 is formed independently of the pump flow path inlet section 52 of the pump upstream flow path 28 that sucks the bath water in the bathtub 2 into the pump 4. The pump flow path inlet section 52 forms a circular opening on the back side of the bathtub communication opening section 12 and at the lower portion of the inlet flow path inner vertical wall 24 a in the inlet flow path 24. The communication channel inlet 50 forms a circular opening having a larger radius than the pump channel inlet 52. Therefore, the flow channel cross-sectional area of the communication flow channel inlet 50 is formed larger than the flow channel cross-sectional area of the pump flow channel inlet 52. In the inlet channel vertical wall 24a, the communication channel inlet 50 and the pump channel inlet 52 are separated from each other by a predetermined distance by the inlet channel vertical wall 24a. The road entrance 52 is separately and independently disposed. The pump channel inlet 52 is formed so as to be connected to the inlet channel 24 and is opened in the inlet channel 24. The pump channel inlet 52 is formed to open toward the inlet channel 24 and the inner area A of the bathtub 2 (the bather's bathing area). Since the communication flow path inlet section 50 and the pump flow path inlet section 52 are opened in parallel in the same direction, the flow of hot water toward each inlet port is parallel to each inlet port. It is possible to prevent the inflowing flows from interfering or influencing each other.

  As shown in FIG. 10, the inlet channel 24 has a channel cross-sectional area larger than the sum (total) of the channel cross-sectional area of the communication channel inlet 50 and the channel cross-sectional area of the pump channel inlet 52. It is formed to have. Since the inlet channel 24 has a channel cross-sectional area larger than the sum (total) of the channel cross-sectional area of the communication channel inlet part 50 and the channel cross-sectional area of the pump channel inlet part 52, the bathtub communication port When hot water that has flowed into the inlet channel 24 from the part 12 is directed to each of the communication channel inlet unit 50 and the pump channel inlet unit 52, it will flow in parallel toward the respective inlet ports, It is possible to prevent the flows from interfering with each other, and to prevent hot water flowing from the communication channel inlet 50 toward the bathtub communication unit 42 from being affected by suction toward the pump channel inlet 52 of the pump 4. As a result, an expected amount of hot water can be stably supplied to the jet pump unit 10.

  As shown in FIG. 10, the inlet channel 24 has a communication channel inlet 50 and a pump channel inlet 52 formed therein, and the bathtub communication port 12 is formed as a single opening on the bathtub 2 side. doing. Therefore, when a bather sees from the bathtub 2 side, only the single bathtub communicating port part 12 is visible. In this way, only one bathtub communication port 12, that is, the inlet channel 24 is formed without directly forming two openings of the communication channel inlet 50 and the pump channel inlet 52 in the vertical wall 2 b of the bathtub 2. Therefore, the processing work for connecting the inlet flow path 24 to the bathtub 2 can be reduced, and further, the seal portion between the bathtub 2 and the inlet flow path 24 can be reduced to reduce the seal. Manufacturing operations and seal management operations can be reduced, and the risk of water leakage can also be reduced.

  As shown in FIGS. 11 and 12, the jet pump unit 10 further includes an opening degree adjusting mechanism 54 that can adjust the opening area of the communication channel inlet 50 of the bathtub water communication channel 47. . The opening adjustment mechanism 54 is provided in the vicinity of the communication channel inlet 50. The opening adjustment mechanism 54 includes a shutter mechanism that can adjust the opening area of the communication channel inlet 50. The opening adjustment mechanism 54 is formed so that the user of the bathtub apparatus 1 can manually adjust the opening area of the flow path of the communication flow path inlet 50 from the bathtub 2. More specifically, the position of the opening adjustment mechanism 54 can be manually changed from the bathtub communication opening 12 side by a simple operation such as the finger of the user H. In addition, adjustment of the opening area of the communication flow path inlet 50 may be performed by an electric mechanism.

  As shown in FIG. 11, when the opening adjustment mechanism 54 is adjusted to an open state in which the communication channel inlet 50 is opened, it passes through the communication channel inlet 50 from the inlet channel 24. The hot water flow F21 flowing toward the bathtub communication portion 42 and the hot water flow F22 flowing from the inlet flow path 24 to the pump 4 through the pump flow path inlet 52 are formed. Since the opening adjustment mechanism 54 is in an open state in which the communication channel inlet 50 is not narrowed, the flow F21 having a flow rate and / or flow velocity according to the diameter of the communication channel inlet 50 is directed toward the bathtub communication unit 42. Will be formed.

As shown in FIG. 12, when the opening adjustment mechanism 54 is positioned in a closed state so as to cover all or part of the communication flow path inlet 50, hot water flowing into the communication flow path inlet 50. The flow rate and / or flow rate of the hot water supplied to the bathtub communication portion 42 is restricted, and the flow rate, speed, and water flow of hot water discharged from the water discharge portion 6 are not required without controlling the pump 4. Etc. can be adjusted easily. At this time, the hot water flow F23 flowing from the inlet channel 24 through the communication channel inlet 50 toward the bathtub communication unit 42, and from the inlet channel 24 through the pump channel inlet 52 to the pump 4 A flowing hot water flow F24 is formed. Here, since the opening adjustment mechanism 54 is in the closed state in which the communication channel inlet 50 is narrowed, the flow rate and / or flow rate of hot water flowing into the communication channel inlet 50 is limited, and the flow rate of F23 And / or the flow velocity is smaller than the flow rate and / or flow velocity of F21. On the other hand, the flow rates and flow velocities of the flows F23 and F24 are substantially constant because they correspond to the performance of the pump 4.
In the present embodiment, the opening adjustment mechanism 54 can adjust the open state and the closed state of the communication channel inlet 50 in two stages. You may enable it to adjust the opening degree (opening / closing ratio of an opening) of the inlet part 50 according to several steps, such as a 3 step | paragraph and 5 steps | paragraphs, for example.

  According to the opening degree adjusting mechanism 54 of the present embodiment, the bathtub water supplied from the common pump 4 is discharged from the blow water discharger 16 at a higher flow rate than the water discharged from the water discharger 6. Higher and the flow rate of the bathtub water discharged from the water discharge unit 6 can be simultaneously discharged from the blow water discharge unit 16 and the water discharge unit 6 so that the flow rate of the bathtub water discharged from the blow water discharge unit 16 is larger. In the bathtub apparatus 1, the hot water discharged from the water discharger 6 without changing the setting of the pump 4 and / or changing the pump 4 itself that involves changing the flow rate and flow rate of hot water discharged from the blower water discharger 16. The flow velocity and flow rate can be changed or adjusted (finely adjusted) relatively easily with a relatively simple configuration.

Next, the water discharge operation | movement from only the water discharge part 6 by the bathtub apparatus 1 by this embodiment is demonstrated using FIG. 3 thru | or FIG.
FIG. 7 is a perspective view showing a state in which a water discharge operation is performed only from the water discharge section in a state where a user is sitting in the bathtub of the bathtub apparatus according to the embodiment of the present invention.
Before the water discharging operation from the water discharging unit 6 by the bathtub device 1 is started, hot water having a temperature at which the user H can take a bath is supplied and stored in the bathtub 2 to the water supply level WL0, for example. At this time, since the bathtub 2 and the bathtub communication part 42 are communicated with each other via the inlet channel 24 and the communication channel 26, hot water having substantially the same temperature as the bathtub 2 is also stored in the bathtub communication part 42. It has become.

When trying to start the water discharging operation from the water discharging unit 6 by the bathtub device 1, the user H operates the operation unit 38 to select water discharging from the water discharging unit 6. Information about the operation of the operation unit 38 by the user H is transmitted to the control unit 8. At this time, the control unit 8 determines the height of the hot water level in the bathtub 2 based on the water pressure value detected by the pressure sensor 40.
When the control unit 8 determines that the water level in the bathtub 2 is equal to or lower than the predetermined water level WL2 where air may be introduced from the bathtub communication port 12, the control is performed so that the pump 4 is not operated. This predetermined water level is, for example, the water level WL2 at the height of the upper end of the bathtub communication opening 12. Therefore, when the control unit 8 determines that the water level in the bathtub 2 is higher than a predetermined water level (for example, WL2) in which air may be introduced from the bathtub communication port 12, the pump 4 is operated. To control.

  When the control unit 8 operates the pump 4, the pump 4 sucks hot water in the bathtub 2 from the bathtub communication port 12 through the inlet channel 24 and the pump upstream channel 28 as indicated by an arrow F <b> 1. To do. And the pump 4 pumps the sucked hot water to the pump downstream flow path 30 of a downstream side, as shown by the arrow F2. The control unit 8 controls the switching valve 18 so as to selectively open and close both or any one of the injection unit side flow channel 32 and the blow water discharge unit side flow channel 36. For example, when the water discharge operation from the blow water discharge unit 16 is not performed and the water discharge operation from the water discharge unit 6 is performed, the switching valve 18 causes the flow path from the pump downstream side flow channel 30 to the blow water discharge unit 16 side flow channel. The communication is closed and the communication of the flow path from the pump downstream flow path 30 to the injection unit flow path 32 is opened. At this time, hot water is supplied from the pump downstream side channel 30 to the injection unit side channel 32 as indicated by an arrow F3. As shown by arrow F4, the hot water passing through the jet part side flow path 32 is jetted at high speed and linearly from the jet nozzle 44 toward the inside of the bathtub communicating part 42 and the bathtub water introducing part 46. At this time, hot water sprayed from the jet nozzle 44 in the bathtub communication portion 42 flows to the bathtub water introduction portion 46 while drawing hot water in the bathtub communication portion 42 by a jet pump action.

The control part 8 is provided with the water discharging part water discharging mode which performs the water discharging operation | movement only from the water discharging part 6 mentioned later for the bathtub water supplied from the pump 4. FIG. The control part 8 is provided with the blow water discharging mode which performs the water discharging operation | movement only from the blow water discharging part 16 mentioned later for the bath water supplied from the pump 4. FIG.
The control unit 8 is configured such that the bathtub water supplied from the pump 4 has a higher flow rate than that of the bathtub water discharged from the second discharge unit, and the second discharge water. The water discharged from the water discharge unit 6 and the blow water discharge unit 16 described later simultaneously (simultaneously) so that the flow rate of the bathtub water discharged from the unit is larger than the flow rate of the bathtub water discharged from the first water discharge unit. It has a simultaneous water discharge mode to execute the operation. Moreover, the control part 8 may be provided with the pulsation mode which switches on / off of the air introduction switching valve 58 automatically and periodically or according to other conditions. Thereby, since the mixing amount of the air in the water discharged from the water discharge part 6 can be changed and the change which the water discharge gives to the user H can be given, the water discharge stimulation effect of a shoulder bath can be strengthened more. . Furthermore, the control part 8 is equipped with the stirring water discharging mode which performs the water discharging operation | movement which performs the water discharging from the water discharging part 6 and the water discharging from the blow water discharging part 16 (stirring water discharging part) simultaneously (at the same time). According to the stirring water discharge mode, the hot water in the bathtub 2 can be stirred by discharging water from the blow water discharging unit 16 during discharging from the water discharging unit 6 so that hot water having a relatively low temperature is not discharged from the water discharging unit 6. it can.

Next, as shown in FIGS. 5 and 6, the manner in which the hot water sprayed from the jet nozzle 44 flows to the bathtub water introducing portion 46 while drawing hot water in the bathtub communicating portion 42 by the jet pump action will be described in more detail. .
As shown in FIGS. 5 and 6, the hot water sprayed from the jet nozzle 44 at a high speed forms a jet (jet flow) as shown by an arrow F <b> 4 and is fast and powerful in the direction of the opening of the jet nozzle 44. A flow having a driving force is formed. At this time, the flow of the injected hot water produces an action of drawing in the surrounding hot water by a jet pump action, that is, an ejector effect. In the present embodiment, hot water in the bathtub communicating portion 42 is drawn into the linear jet flow as shown by the arrow F4 as shown by arrows F5 and F6 (in other words, it is drawn up). . At this time, the flow rate q1 of hot water drawn from the bathtub communication portion 42 is added to the flow rate q1 of hot water sprayed from the jet nozzle 44, resulting in a flow rate q3 of hot water in the bathtub water introduction portion 46 having a larger flow rate ( (See arrow F4 '). Such a flow rate relationship can be represented by the equation q1 + q2 = q3. As described above, the jet pump unit 10 can realize a technique for amplifying the discharged water flow rate by entraining the hot water in the bathtub communication portion 42 on the downstream side of the jet nozzle 44 using the jet pump action.

Since the hot water injected from the jet nozzle 44 draws hot water flowing from the bathtub 2 in the bathtub communication portion 42, low-temperature hot water (residual water etc. at the previous use) is injected into the hot water injected from the jet nozzle 44. Even when mixed, since hot water in the bathtub communication portion 42 is drawn into the water discharge portion 6, hot water having a temperature relatively close to the temperature of the hot water in the bathtub 2 can be discharged from the water discharge portion 6. . Therefore, it is possible to more reliably suppress the user H from feeling cold, and the water discharged from the water discharger 6 can be used immediately after the start of use of the pump 4, thereby improving the startability of the bathtub apparatus 1. Can be made.
In addition, the flow rate q2 of hot water drawn from the bathtub communication portion 42 is set to a flow rate higher than the flow rate q1 of hot water injected from the jet nozzle 44. Thus, since it has the relationship of the flow volume of q2> q1, low temperature hot water (after the supply of the low temperature residual water at the time of last use, and hot water supply to the bathtub 2 is injected into the hot water injected from the jet nozzle 44. Even when the temperature of the hot water in the flow path of the pump 4 or the like decreases with the passage of time, the injected hot water is more than the flow rate q1 of the hot water injected from the jet nozzle 44. Since the hot water in the bathtub communication part 42 with a large flow rate q2 is drawn into the water discharge part 6, the hot water in the bathtub water introduction part 46 is relatively close to the temperature of the hot water in the hot water drawn from the bathtub communication part 42. The ratio of warm hot water is dominant. Therefore, it can suppress more reliably making the user H feel cold, can use the water discharge from the water discharge part 6 immediately after the use start of a pump, and improves the startability of the bathtub apparatus 1. FIG. be able to.

  The flow rate q3 of the hot water in the bathtub water introduction part 46 is set in the range of the flow rate 2 to 4 times the flow rate q1 of the hot water sprayed from the jet nozzle 44, for example. Moreover, for example, the flow rate q3 of hot water in the bathtub water introduction part 46 is set to a flow rate range of 30 l / min to 80 l / min. The flow rate q2 of hot water drawn from the bathtub communicating portion 42 is set in a range of 1 to 3 times the flow rate q1 of hot water injected from the jet nozzle 44, for example.

  As described above, the hot water sprayed from the jet nozzle 44 draws the hot water in the bathtub communication portion 42 and flows into the bathtub water introduction portion 46. The hot water in the bath water introducing portion 46 flows upward while maintaining the water flow rate and flow velocity of the hot water jetted from the jet nozzle 44 and reaches the developing portion 48. The flow of the hot water becomes a flow that is spread in the left-right direction at the developing portion 48 and reaches the water discharge portion 6. As shown by the arrow F7, the hot water is discharged like a waterfall from the water discharge port 22 formed long in the left-right direction toward the front side (inside the bathtub). Thus, the hot water is discharged as a belt-like flow having a width of about the shoulder width, and is applied to the neck and shoulder of the user H relatively uniformly. The hot water discharged from the water discharge part 6 forms a flow of flowing water having a substantially constant width and thickness. The hot water discharged from the water discharger 6 can flow so as to spread relatively evenly over a wide range such as the neck, shoulder, chest and back of the user H. For example, the body of the user H in a half-body bath is cooled. Can be warmed so that there is no.

Moreover, since the hot water discharged from the water discharge part 6 is supplied via the jet pump unit 10, it is set as the flow volume increased rather than the pumpable flow volume accompanying the magnitude | size of the pump 4. FIG. In other words, without increasing the size of the pump 4, it is possible to discharge a large flow rate from the discharge unit 6 having a size that is, for example, 2 to 4 times the pumpable flow rate of the pump 4. It is very difficult to increase the size of the pump in order to realize a large flow rate of water discharge due to space limitations on the installation position and size (size) of the pump. In addition, if the pump size is increased in order to realize a large flow rate of water discharge, vibrations and operation noise of the pump increase, which may cause discomfort to the user H.
On the other hand, in this embodiment, in an environment where the size of the pump cannot be easily increased, water discharge with a large flow rate can be realized by using the jet pump unit 10. Even when the amount of hot water stored in the bathtub 2 (the amount of hot water immersed in the user H) is relatively small, the body of the user H can be cooled by discharging water from the water discharger 6 at a large flow rate. Can be warmed more efficiently so that there is no. Moreover, since the amount of hot water stored in the bathtub 2 (the amount of hot water in which the user H is immersed) can be relatively reduced, a water-saving effect can be realized. By being able to discharge a large amount of water from the water discharger 6, it is possible to increase the body warming effect and massage effect of the user H, and to increase the relaxation effect and relaxation effect of the user H.

Next, as shown in FIG. 8, the water discharge operation | movement from only the blow water discharging part 16 by the bathtub apparatus 1 by this embodiment is demonstrated.
FIG. 8 schematically shows the internal structure of the bathtub device viewed along line III-III in FIG. 2 in a state where the user is sitting in the bathtub of the bathtub device according to one embodiment of the present invention. It is a schematic sectional drawing explaining a mode that the water discharging operation | movement from only a part is performed.

  When trying to start the water discharge operation from only the blow water spouting unit 16 by the bathtub device 1, the user H operates the operation unit 38 to select water discharge from the blow water discharging unit 16. Information about the operation of the operation unit 38 by the user H is transmitted to the control unit 8. At this time, the control unit 8 determines the height of the hot water level in the bathtub 2 based on the water pressure value detected by the pressure sensor 40. When the control unit 8 determines that the water level in the bathtub 2 is equal to or lower than the water level WL3 at the height of the blow water spouting unit 16, the control is performed so that the pump 4 is not operated. Therefore, when the control unit 8 determines that the water level in the bathtub 2 is higher than the height of the blow water spouting unit 16, the control is performed so that the pump 4 is operated.

  When the control unit 8 activates the pump 4, the pump 4 pumps the sucked hot water as indicated by an arrow F8 to the downstream pump downstream flow path 30 as indicated by an arrow F9. The control unit 8 performs the water discharge operation from the blow water discharge unit 16 and does not perform the water discharge operation from the water discharge unit 6, so that the flow path from the pump downstream side flow channel 30 to the blow water discharge unit side flow channel 36 is controlled. The switching valve 18 is controlled so that the communication is opened and the communication of the flow path from the pump downstream flow path 30 to the injection unit flow path 32 is closed. At this time, hot water is supplied from the pump downstream side flow channel 30 to the blow water discharge unit side flow channel 36 as indicated by an arrow F10. The hot water flowing into the blow water spouting portion side flow path 36 is jetted from the blow water spouting portion 16 into the bathtub as indicated by an arrow F11. Hot water discharged from the blow water spouting unit 16 is hot water pumped by the pump 4, and forms a relatively small flow rate and high speed water discharge. Hot water discharged from the blow water spouting unit 16 can collide with the waist and back of the user H, so that the collided portion can be massaged. During this time, since the switching valve 18 closes the communication of the flow path from the pump downstream flow path 30 to the injection section flow path 32, the water discharge operation from the water discharge section 6 is not performed.

Next, as shown in FIG. 9, the water discharging operation performed simultaneously (simultaneously) from the water discharging unit 6 and the blow water discharging unit 16 in the bathtub apparatus 1 according to the present embodiment will be described.
FIG. 9 schematically shows the internal structure of the bathtub device viewed along line III-III in FIG. 2 in a state where a user is sitting in the bathtub of the bathtub device according to one embodiment of the present invention. It is a schematic sectional drawing explaining a mode that the water discharging operation performed simultaneously from a blow water discharging part is performed.

In addition, about the water discharging operation | movement simultaneously performed from the water discharging part 6 and the blow water discharging part 16 by the bathtub apparatus 1 by this embodiment, the water discharging operation only from the water discharging part 6 by the bathtub apparatus 1 by embodiment, and the blow water discharging part 16 only. A description of the water discharge operation common to the water discharge operation will be omitted, and different parts will be mainly described.
The water discharge operation performed simultaneously (simultaneously) from the water discharge unit 6 and the blow water discharge unit 16 is performed at the same time when there is a water discharge operation performed from the water discharge unit 6 and a water discharge operation performed from the blow water discharge unit 16. It means water discharge operation when there is. Therefore, not only when the water discharge operation performed from the water discharge unit 6 and the water discharge operation performed from the blow water discharge unit 16 are started at the same time, but also from the water discharge operation performed from the water discharge unit 6 and the blow water discharge unit 16 This includes a case where the water discharge operation is started at different times and the water discharge operations are performed in parallel.

When trying to start the water discharge operation performed simultaneously from the water discharge unit 6 and the blow water discharge unit 16 by the bathtub device 1, the user H operates the operation unit 38 to discharge water from the water discharge unit 6 and from the blow water discharge unit 16. Select both water discharges.
As described above, the control unit 8 determines that the water level in the bathtub 2 is higher than the predetermined water level WL2 in which air may be introduced from the bathtub communication port 12, and the water level in the bathtub 2 is blown out. When it is determined that the water level is higher than the water level WL3 at the height of the unit 16, the pump 4 is controlled to operate.

  When the control unit 8 operates the pump 4, the pump 4 sucks hot water in the bathtub 2 from the bathtub communication port 12 through the inlet channel 24 and the pump upstream channel 28 as indicated by an arrow F <b> 12. To do. And the pump 4 pumps the sucked hot water into the downstream pump downstream flow path 30 as shown by the arrow F13. The control part 8 controls the switching valve 18 so that both the injection part side flow path 32 and the blow water discharge part side flow path 36 are opened. Therefore, as shown by arrows F14 and F15, the hot water is supplied from the pump downstream channel 30 to both the injection unit side channel 32 and the blow water discharge unit side channel 36.

As shown by the arrow F14, the hot water passing through the injection section side flow path 32 is high-speed and straight from the jet nozzle 44 toward the inside of the bathtub communicating section 42 and the bathtub water introducing section 46, as shown by the arrow F16. Is injected. At this time, the hot water sprayed from the jet nozzle 44 in the bathtub communication portion 42 flows to the bathtub water introduction portion 46 while drawing hot water in the bathtub communication portion 42 by a jet pump action, as indicated by an arrow F17. The flow rate q3 of hot water supplied from the bathtub water introduction unit 46 to the water discharge unit 6 is amplified with respect to the flow rate q1 of hot water sprayed from the jet nozzle 44 (see arrow F16 ′). As shown by the arrow F18, the hot water is discharged like a waterfall from the water discharge port 22 formed long in the left-right direction toward the front side (inside the bathtub).
Even when the hot water injected from the jet nozzle 44 is mixed with low-temperature hot water (residual water or the like at the previous use), the hot water in the bathtub communicating portion 42 is supplied to the water discharger 6 while being drawn in. Hot water having a temperature relatively close to the temperature of the internal hot water can be discharged from the water discharge section 6. Further, by using the jet pump unit 10, a large flow rate of water can be discharged from the water discharge unit 6.

Next, it will be described that air is mixed into the hot water jetted by the air inlet 45 in the present embodiment.
3 and 5, as indicated by an arrow F4, hot water is sprayed from the jet nozzle 44 toward the inside of the bathtub communicating portion 42 and the bathtub water introducing portion 46 at high speed and linearly. At this time, hot water sprayed from the jet nozzle 44 in the bathtub communication portion 42 flows into the bathtub water introduction portion 46 while drawing air in the air introduction port portion 45 by a jet pump action. At this time, since the air introduction port 45 is disposed in the vicinity of the downstream side of the injection unit, the hot water injected from the jet nozzle 44 draws air into the hot water immediately after being injected. The flow rate of the hot water sprayed from the jet nozzle 44 is relatively small. At this time, since the flow rate of the hot water injected from the jet nozzle 44 is relatively small immediately after being injected (the flow rate is substantially the same as the flow rate of hot water injected from the jet nozzle 44), The amount of air introduced according to the flow rate can be suppressed to be relatively small. As the hot water sprayed from the jet nozzle 44 passes through the bathtub communication portion 42 and the bathtub water introduction portion 46 on the downstream side of the air introduction port portion 45, the flow rate of the hot water in the bathtub communication portion 42 is drawn by the jet pump action. Is increased. As described above, the flow rate is amplified mainly on the downstream side of the air introduction port portion 45, so that an increase in the flow rate of the flow that passes through the vicinity of the air introduction port portion 45 is suppressed, and the air introduction port portion 45 enters the hot water. It is possible to suppress an excessive increase in the flow rate of the drawn air.

Furthermore, since the flow rate of the hot water sprayed from the jet nozzle 44 is increased while drawing hot water in the bathtub communicating portion 42 by the action of the jet pump, a relatively large flow rate of water discharge is suppressed while suppressing an increase in the amount of air. It can be performed. Therefore, even when air is introduced into the flow of bathtub water that discharges a relatively large amount of water from the water discharge portion by the ejector action, the amount of air introduced can be suppressed to a relatively low level, and the amount of air introduced can be reduced. It can suppress that the water discharge from a water discharge part becomes easy to break, and can form the comparatively uniform and stable water discharge state. More specifically, when water is discharged as a wide and thin film-like flow having a predetermined width from the wide water discharge port 22 formed in a horizontally long shape, bubbles of a relatively large size are included in the water discharge. The water flow breaks up into multiple water flows and is turbulent, the water flow is biased so that a part of it is interrupted, or the space appears as a part of the uniform wide thin film flow is disturbed Even in a state where air is mixed in the discharged water, it is possible to form a uniform wide thin film-like smooth flow.
According to such a flow, when the flow mixed with air hits the user, not only the relaxation effect and the massage effect are given, but also the water discharge stimulation when the flow mixed with fine bubbles hits the user (given to the user) Disturbance of the sensation) is suppressed, water splashing is also suppressed, and an effective relaxing effect can be given when the user uses it as a shoulder bath.

  In addition, since the air introduction port 45 is arranged in the vicinity of the downstream side of the jet nozzle 44 and / or the front area in the vicinity of the front in the injection direction, the comparison between immediately after the hot water injected from the jet nozzle 44 is injected is performed. Air is drawn into the hot water in a region where the target flow velocity is high. Therefore, when air is drawn from the air introduction port 45 by a flow having a relatively high flow rate of hot water, the introduction of air as relatively large bubbles is suppressed, and the air is divided and introduced as fine bubbles. be able to. In this way, by mixing fine bubbles in the hot water, it is possible to suppress mixing of relatively large bubbles that make it easy for the water discharged from the water discharge portion to break. Moreover, since air is mixed little by little in the state of fine bubbles, a large amount of air can be prevented from being mixed as relatively large bubbles, and a relatively small amount of air can be mixed. Therefore, a relatively small amount of fine bubbles can be mixed, and the water discharge from the water discharge portion can be made more difficult to break.

  Here, the flow of hot water in the inlet channel 24 will be described. Hot water flows into the inlet channel 24 from the bathtub 2 through the bathtub communication port 12. In the inlet channel 24, the flow of hot water flowing from the bathtub 2 into the communication flow channel inlet 50 and the flow of hot water flowing from the bathtub 2 into the pump flow channel inlet 52 are independent from each other. Formed. Since the communication flow path inlet section 50 and the pump flow path inlet section 52 each form an opening toward the inner region A of the bathtub 2 in parallel, the communication flow path inlet section 50 and the pump flow path inlet section 52 The flow of hot water flowing into each of them forms an independent and linear flow toward each opening. Accordingly, the two flows can be made difficult to affect each other, and hot water flowing from the communication flow path inlet 50 toward the bathtub communication section 42 is affected by being sucked into the pump flow path inlet 52 by the pump 4. This can be prevented, and hot water can be stably supplied to the jet pump unit 10.

  In the inlet channel 24, the channel cross-sectional area of the inlet channel 24 is larger than the sum of the channel cross-sectional area of the communication channel inlet 50 and the channel cross-sectional area of the pump channel inlet 52. Therefore, the hot water flowing into the communication flow channel inlet 50 from the bathtub 2 and the hot water flowing into the pump flow channel inlet 52 from the bathtub 2 are branched in the inlet flow channel 24. Are formed in a relatively stable state in the space region in the inlet channel 24, so that the flows are less likely to affect each other. The flow path of the hot water flowing into the communication flow path inlet 50 from the bathtub 2 and the flow of the hot water flowing into the pump flow path inlet 52 from the bathtub 2 do not intersect with each other. And have a sufficient flow area (flow space) that can flow independently to such an extent that they are unlikely to affect each other. The flow of hot water sucked into the pump flow path inlet 52 is formed as a flow of hot water from the inner region A of the bathtub 2 toward the pump flow path inlet 52, and from the communication flow path inlet 50 side to the pump flow path inlet. It is formed so as to suppress the flow of hot water toward 52. Therefore, it is possible to more reliably prevent the hot water flowing toward the bathtub communication portion 42 from being influenced by the pump 4, and the hot water can be stably supplied by the jet pump unit 10.

  As shown by the arrow F15, the hot water flowing into the blow water spouting portion side flow path 36 is jetted from the blow water spouting portion 16 into the bathtub as shown by arrows F19 and F20. Hot water discharged from the blow water spouting unit 16 is hot water pumped by the pump 4, and forms a relatively small flow rate and high speed water discharge. Hot water discharged from the blow water spouting unit 16 can collide with the waist and back of the user H, so that the collided portion can be massaged.

  In FIG. 9, it demonstrates that the blow water discharging part 16 is functioning also as the stirring water discharging part which stirs the bathtub water stored in the bathtub 2. FIG. The hot water in the bathtub 2 can be stirred by simultaneously discharging water from the blow water discharging unit 16 (stir water discharging unit) together with water discharged from the water discharging unit 6. The hot water discharged from the blow water spouting unit 16 at a high speed forms a strong flow as indicated by an arrow F20 so that the hot water in the bathtub 2 is forcibly stirred in addition to the natural hot water convection in the bathtub 2. Form a simple flow. Further, even when hot water discharged from the blow water spouting unit 16 collides with the user H, for example, a flow that spreads in the vertical direction as shown by an arrow F25 is generated, and the hot water in the bathtub 2 is forced. A flow is formed so as to be stirred.

The bathtub communication part 42 and the bathtub water communication flow path part 47 are disposed at a height position equal to or lower than the intermediate height position h1 between the bottom part 2a and the upper end part 2c of the bathtub 2, so that the inside of the bathtub 2 Even in the case where hot water having a relatively low temperature that is likely to be stored at a low position in the hot water may flow into the bathtub communication portion 42, the bath water in the bathtub 2 is stirred by the blow water spouting portion 16, and the jet pump unit 10. Hot water with a relatively high temperature can be allowed to flow into. Hot water having a relatively low temperature is supplied from the jet pump unit 10 to the water discharging unit 6 by discharging water from the blow water discharging unit 16 together with water discharged from the water discharging unit 6, and hot water having a relatively low temperature is supplied from the water discharging unit 6. It is possible to more reliably suppress water discharge by the user H.
Moreover, the blow water spouting part 16 is arrange | positioned in the vertical wall 2b of the bathtub 2 to which the communication flow path 26 of the bathtub water communication flow path part 47 is connected, and the blow water discharge part 16 and the bathtub communication opening part 12 are the same vertical. Since it will be arrange | positioned comparatively near along the wall 2b, the hot water which flows into the communication flow path 26 of the bathtub water communication flow-path part 47 can be stirred more efficiently by the blow water discharge part 16. FIG. Therefore, hot water having a relatively low temperature is supplied from the jet pump unit 10 to the water discharger 6, and hot water having a relatively low temperature is discharged from the water discharger 6 to the user H more reliably.

  In the present embodiment, the water discharge unit 6 forms a wide and relatively large water discharge port 22 to discharge water at a low speed and a large flow rate, whereas the blow water discharge unit 16 forms a small-diameter opening to discharge water at a high speed and a small flow rate. Is going. Such water discharge with different flow velocity and flow rate is performed at the same time. In the present embodiment, the difference between the pressure loss in the jet nozzle 44 attached to the injection unit side flow channel 32 and the pressure loss in the blow water discharge unit 16 attached to the blow water discharge unit side flow channel 36 is made relatively small. Therefore, even when hot water is supplied from the common pump 4, the flow rate of hot water is prevented from being greatly biased to any of the flow paths, and the water discharge operation is simultaneously performed from the water discharge unit 6 and the blow water discharge unit 16. It can be performed. Further, even when the flow rate of hot water supplied from the pump to the injection unit side flow path 32 is constant (when it is not increased) by using the jet pump unit 10, a large flow rate of water discharged from the water discharge unit 6 is discharged. In the water discharge part 6 and the blow water discharge part 16, the water discharge from which the flow velocity and flow volume differ can be performed at the same time, respectively.

  According to the bathtub device 1 according to the above-described embodiment of the present invention, the jet pump unit 10 is provided on the injection unit side flow path 32 and the bathtub water introduction flow path 34, whereby the blow water discharge from the blow water discharge unit side flow path 36. The difference between the pressure loss of the flow path leading to the section 16 and the pressure loss of the flow path extending from the injection section side flow path 32 and the bath water introduction flow path 34 to the water discharge section 6 can be made relatively small. It is possible to suppress the hot water supplied from the pump 4 from being largely biased to any one of the blow water discharge portion side flow path 36, the injection portion side flow path 32, and the bathtub water introduction flow path 34, and the common pump 4 Water discharged from the blow water spouting unit 16 is simultaneously discharged from the water discharging unit 6 and the blow water discharging unit 16 so that the flow rate of the hot water discharged from the blow water discharging unit 16 is higher than the flow rate of the hot water discharged from the water discharging unit 6. Can do.

  Moreover, according to the bathtub apparatus 1 by one Embodiment of this invention, the hot water of the bathtub 2 is bathtub-added, without providing the separate water supply source for supplying hot water to the jet pump water storage part 41 of the jet pump unit 10 separately. It can introduce into the jet pump water storage part 41 from the water communication flow path part 47, and can simplify the whole structure of the bathtub apparatus 1. FIG. In addition, since a dedicated water supply source for supplying hot water from outside the bathtub is not separately provided in the jet pump water storage unit 41 of the jet pump unit 10, the hot water discharged from the blow water discharge unit 16 by the jet pump unit 10. Even when water is discharged from the water discharger 6 into the bathtub 2 at a flow rate larger than the flow rate, it is possible to prevent the water level in the bathtub 2, that is, the amount of water from increasing.

  Furthermore, according to the bathtub device 1 according to the embodiment of the present invention, the flow of hot water flowing from the bathtub 2 into the communication flow path inlet 50 and the flow of hot water flowing from the bathtub 2 to the pump flow path inlet 52 are shown. Are formed with respect to the independent inlets, so that the flows can hardly be affected by each other, and hot water flowing from the communication channel inlet part 50 toward the bathtub communication part 42 is pumped by the pump 4. The influence of being sucked into the inlet portion 52 can be prevented, and hot water can be stably supplied to the jet pump unit 10.

Furthermore, according to the bathtub device 1 according to the embodiment of the present invention, the flow passage cross-sectional area of the inlet flow passage 24 is equal to the flow passage cross-sectional area of the communication flow passage inlet portion 50 and the flow passage cross-sectional area of the pump flow passage inlet portion 52. Therefore, the flow of hot water flowing into the communication flow channel inlet 50 from the bathtub 2 and the flow path from the bathtub 2 to the pump flow path are branched. Since the hot water flowing into the inlet 52 is formed in a relatively stable manner in an independent state, the flows can hardly affect each other. Therefore, it is possible to more reliably prevent the hot water flowing toward the bathtub communication portion 42 from being influenced by the pump 4, and the hot water can be stably supplied by the jet pump unit 10.
Moreover, since one inlet flow path 24 can be formed on the bathtub 2 side without forming two openings of the communication flow path inlet section 50 and the pump flow path inlet section 52, the inlet flow path is connected to the bathtub 2. 24 can be reduced, and furthermore, by reducing the sealing portion between the bathtub 2 and the inlet channel 24, the manufacturing and management operations can be reduced and the risk of water leakage. Can also be reduced.

  Furthermore, according to the bathtub apparatus 1 according to an embodiment of the present invention, the flow rate of hot water discharged from the blow water spouting unit 16 from the hot water supplied from the common pump 4 is higher than the flow rate of hot water discharged from the water discharge unit 6. In the bathtub apparatus 1 that can simultaneously discharge water from the blow water spouting unit 16 and the water discharging unit 6, the pump setting and the change of the flow rate and flow rate of hot water discharged from the blow water discharging unit 16 and The flow rate and flow rate of hot water discharged from the water discharger 6 can be changed with a relatively simple configuration by the opening adjustment mechanism 54 without changing the pump itself.

  Furthermore, according to the bathtub apparatus 1 according to an embodiment of the present invention, the flow rate of hot water discharged from the blow water spouting unit 16 from the hot water supplied from the common pump 4 is higher than the flow rate of hot water discharged from the water discharge unit 6. So that the water is discharged to the upper part of the user's body above the blow water spouting unit 16, for example, the neck and shoulders, from the water discharging unit 6 disposed above the blow water discharging unit 16. it can.

DESCRIPTION OF SYMBOLS 1 Bathtub apparatus 2 Bathtub 2a Bottom part 2b Vertical wall 2c Upper end part 4 Pump 6 Water discharge part 6a Water discharge part upper surface 8 Control part 10 Jet pump unit 12 Bath communication port part 14 Circulation flow path 16 Blow water discharge part 18 Switching valve 20 Casing 22 Water discharge port 22a Water discharge part inner flow path bottom face 24 Inlet flow path 26 Communication flow path 28 Pump upstream flow path 30 Pump downstream flow path 32 Injection section flow path 34 Bath water introduction flow path 36 Blow discharge water flow path side flow path 38 Operation part 40 Pressure Sensor 41 Jet pump water storage portion 42 Bath communication portion 42a Bottom surface 42b Top surface 44 Jet nozzle 44a Tip 45 Air introduction portion 45a Tip opening 46 Bath water introduction portion 46a Inlet portion 47 Bath water communication passage portion 48 Deployment portion 50 Communication passage Inlet portion 52 Pump flow passage inlet portion 54 Opening adjustment mechanism 56 Air pipe 58 Air introduction switching valve H User q1 Flow rate q2 Flow rate q3 Flow rate W Wall surface WL0 Supply water level WL1 Full water level WL2 Water level WL3 Water level

Claims (6)

A bathtub apparatus provided in a bathtub for storing hot water,
A pump for sucking hot water in the bathtub and supplying the hot water to the downstream pump downstream flow path;
A first flow path branched from the pump downstream flow path;
A second flow path branched from the pump downstream flow path,
The hot water supplied from the first flow path and the first water portion of the water discharge in the water in the bathtub,
A second water discharger for discharging hot water supplied from the second flow path into the bathtub from above the water surface of the bathtub;
A control unit for controlling the pump;
A jet pump unit provided on the second flow path,
The water discharge port of the second water discharge unit is formed to have a larger opening than the water discharge port of the first water discharge unit,
The jet pump unit
A jet pump water storage section in which hot water drawn by the jet pump action is stored;
The jet pump water storage part and the bathtub or the water supply source different from the bathtub and the hot water in the bathtub or a hot water source different from the bathtub are introduced into the jet pump water storage part. A flow path section to
The flow path diameter is smaller than the flow path diameter of the second flow path upstream of the jet pump water storage section, and hot water supplied to the second flow path is accelerated and injected into the jet pump water storage section. An injection unit,
The second channel on the downstream side of the jet pump water reservoir is formed such that the channel diameter of the second channel on the downstream side is larger than the channel diameter of the injection unit,
The jet pump unit supplies hot water having a flow rate larger than the flow rate of hot water injected from the injection unit by a jet pump action of drawing hot water in the jet pump water storage unit by the hot water injected from the injection unit. It is configured to supply the second flow path on the downstream side of the water reservoir,
In the hot water supplied from the pump, the flow rate of the hot water discharged from the first water discharger is higher than the flow rate of the hot water discharged from the second water discharger. The bathtub apparatus characterized by being discharged simultaneously from a water discharging part.   The flow path part of the jet pump unit is a bathtub water communication flow path part that is formed between the jet pump water storage part and the bathtub and introduces hot water of the bathtub into the jet pump water storage part. The bathtub apparatus according to claim 1.   The communication channel inlet of the bathtub water communication channel is formed independently of the pump channel inlet of the upstream channel of the pump that sucks hot water in the bathtub into the pump. The bathtub apparatus according to claim 2.   The bathtub forms a single inlet channel, and the communication channel inlet and the pump channel inlet are connected to the inlet channel, and further the flow of the inlet channel 4. The passage cross-sectional area is formed so as to be larger than the sum total of the flow passage cross-sectional area of the communication flow passage inlet and the flow passage cross-sectional area of the pump flow passage inlet. Bathtub equipment.   The said jet pump unit is further provided with the opening degree adjustment mechanism which can adjust the opening area of the communicating flow path entrance part of the said bathtub water communicating flow path part. Bathtub equipment.   The second water discharger directs the bath water supplied from the pump from the position near the upper end of the bathtub above the water surface in the bathtub to the space near the shoulder of the user sitting in the bathtub and taking a bath. In order to discharge water, the bathtub apparatus according to any one of claims 1 to 5, wherein the bathtub apparatus is disposed above the first water discharging section.

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