JPH0718184B2 - Bathtub drainage - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drainage mouthpiece of a bathtub, and conventionally, this drainage mouthpiece was dedicated as a drainage function section for hot water supply or circulation. By also functioning as a heating pipe connecting portion, the structure of the wall surface of the bathtub is simplified.

[Prior Art and Its Problems] A conventional drainage cap provided at the bottom of a bathtub is only configured to correspond to a drain plug, and a so-called hot-water bath device for directly supplying hot water into the bathtub, Circulation heating type bath device that heats hot water in the bathtub to a desired temperature by circulation heating, or bath device that supplies high temperature hot water from a water heater to the bathtub to raise the bath temperature For connecting to the bathtub, a mouthpiece for connecting the hot water supply circuit was provided separately from the mouthpiece for drainage.

Therefore, in order to form a bathtub for connecting these bath devices, it is necessary to dispose at least one mouthpiece on the side wall of the bathtub in addition to the drainage mouthpiece, and post-processing after the bathtub is troublesome.

Also, when trying to raise the hot water temperature in the bathtub by circulating heating the hot water in the bathtub, etc., the temperature difference between the upper layer part and the lower layer part of the bathtub or the vicinity of the hot water discharge port and the part away from it There was a problem that the temperature difference between them was large.

The present invention has been made in view of the above points, and makes it possible to connect a hot water supply circuit using a drainage mouthpiece provided at the bottom of a bathtub and to keep the hot water temperature in the bathtub (B) in check. It is an object of the present invention to make it possible to significantly reduce the above-mentioned temperature difference between the upper layer portion and the lower layer portion of hot water when the temperature is raised by heating.

[Technical Means] The technical means of the present invention taken to solve the above-mentioned problem is that the inside of a bottomed cylindrical main body (3) is opened upward and the open end of which is attached to the bottom of the bath. The partition body (4) divides the drainage chamber (3a) into a hot water supply chamber (3b) surrounded by the body of the main body (3) and the partition body (4), and the upper ends of the two chambers together are bathtubs. From the first connection part (J ₁ ) which is opened inside and is provided so as to communicate with the hot water supply chamber (3b) and the second connection part (J ₂ ) which is provided so as to be communicated with the drainage chamber (3a) The partition portion (4) is configured to have a flange portion (41) projecting from the upper end of the partition body (4) toward the hot water supply chamber (3b), and between the upper end of the trunk portion of the main body portion (3) and the flange portion (41). The arc-shaped or ring-shaped gap is formed in and the opening direction of the gap is set so that the discharge water is directed obliquely upward. ”

[Operation] The above technical means of the present invention operates as follows.

The body or bottom of the main body (3) has a first connecting part (J ₁ ) and a second connecting part (J ₂ ) provided so as to communicate with the hot water supply chamber (3b) or the drainage chamber (3a). Therefore, hot water supply pipes can be connected using these connecting portions, and furthermore, drainage circuits can be connected. Therefore, hot water from the hot water supply pipe of the hot water supply device reaches the inside of the bathtub from the hot water supply chamber (3b) via the first connection portion (J ₁ ).

When this hot water supply pipe is a hot water supply pipe from a water heater equipped with a high-temperature hot-water bath device or a circulation heating bath device, hot water can be filled through the first connection part (J ₁ ) and reheating is also possible. It will be possible.

At the time of this reheating, high-temperature hot water is drained into the bathtub through the hot water supply chamber (3b), but at the upper end open part of the hot water supply chamber (3b), the partition body (4) is located at a higher position than this. (41) overhangs from the upper end of the, and an arc-shaped or annular gap is formed between the flange and the upper end of the trunk of the main body (3) (the outer wall of the hot water supply chamber (3b)). The hot water is discharged from this gap so as to face obliquely upward. Therefore, the high-temperature discharge hot water is discharged into the bathtub in a fan shape or an inverted cone shape, so that the stored water in the bathtub is sufficiently stirred.

At the time of drainage, the drainage chamber (3a) is opened directly by opening a plug or the like, or the drainage circuit connected to the second connection portion (J ₂ ) is opened. As a result, the hot water in the bathtub is drained through the drainage chamber (3a).

[Effects] The present invention having the above-described configuration has the following unique effects.

Since the hot water supply pipe can be connected while the drainage function is provided, it is not necessary to separately prepare a mouthpiece for the hot water supply pipe even when connecting the bath device, and the structure of the bathtub can be simplified in this respect.

In addition, when a so-called high-temperature hot-water bath device of the type that supplies high-temperature hot water to the bath to reheat it is connected, or when a circulating reheating-type bath device is connected, the high temperature from the bottom of the bath Since the hot water reaches the entire bath, the temperature difference between the top and bottom of the bath is small. In particular, since the high-temperature hot water discharged from the bottom of the bath is discharged into the bath in a fan shape or an inverted conical shape, the stored water in the bath is sufficiently agitated, and the high-temperature water is immediately above the bottom. The stirring performance is further improved compared to the case of the discharge type. In other words, there is almost no difference in temperature at the upper limit of the bath when hot water is added or reheated.

Further, when the bathtub is filled with hot water without a lid, the hot water discharged from the supply chamber (3b) is discharged into the bathtub in a fan shape or an inverted cone shape, so that there is no fear of discharging it to the outside of the bathtub.

Further, when the wash water is discharged from the hot water supply chamber (3b) side for a certain period of time prior to drainage, a wide range can be washed with the wash water in the bath by the wash water discharged in a fan shape or an inverted conical shape.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

The first embodiment shown in FIGS. 1 to 3 is a drainage mouthpiece capable of connecting the inside of the bathtub (B) and a bath device of forced circulation heating, and has a bottomed cylindrical main body (3). Is divided into an annular hot water supply chamber (3b) and a drainage chamber (3a) surrounded by the tubular partition body (4). A cylindrical drainage opening (33) into which the plug (32) is inserted is formed in the drainage chamber (3a), and a shaft portion (37) connected to the plug (32) is formed. A filter (36) is installed at the upper end,
This filter (36) is connected to the brim (4
You are facing 1). In addition, the collar portion (4
The length of the shaft portion (37) is set so that the drainage opening (33) is just closed when the filter (36) is in contact with (1).

The height of the collar portion (41) is set slightly higher than the mounting flange (F) at the upper end of the main body portion (3), and moreover, the outer peripheral edge of the collar portion (41) and the main body portion (3). A constant gap is provided between the upper open end of the.

The body portion of the main body portion (3), first connecting portion for connecting the return (22) fed back from the bath unit (1) to the tub (J ₁₎ is provided, the first connection portion (J ₁ ) Is screwed with a cap nut (N).

A second connecting portion (J ₂ ) is arranged at the bottom of the main body portion (3) near the drainage opening (33), and the second connecting portion (J ₂ ) is L
It is bent in the shape of a letter and a cap nut (N) is also attached to its tip.
Are screwed together. A bathtub (B) is provided at this second connection (J ₂ ).
The outward route (21) from the bath device (1) to the bath device (1) is connected.

To connect the bath device and the bathtub using this drainage mouthpiece, as shown in FIG. 2, the heat exchanger (11) for circulation heating and the bathtub (B) are connected and a pump for circulation ( The outward path (21) of the circulation circuit (2) for inserting P) is used as the second connecting portion (J ₂ ) using the cap nut (N), and the other return path (22) is similarly used as the cap nut (N). First connected to the body of the main body (3)
Connect to each connection (J ₁ ).

As a result, the bathtub (B) second connecting portion (J ₂ ) forward path (21) pump (P) heat exchanger (11) return path (22)
The circulation circuit of the first connection part (J ₁ ) bathtub (B) is configured.

In this embodiment, the heat exchanger (11) and pump (P)
A switching valve (25) is disposed in the bath device (1) for accommodating the gas, on the downstream side of the pump (P) on the outward path (21).
The drain pipe (26) branched from 5) hangs down from the bottom wall of the bath device (1) to the drain groove (M).

The filter (36) is a metal disc having a large number of through holes as shown in FIG. 1, but it may be a synthetic resin plate or sheet made of a porous material.

In the above embodiment, when the bath (B) is circulated and heated, the heat exchanger (11) and the pump (P) are in the operating state, and the main body (3) passes through the second connection (J ₂ ). The hot water in the bathtub (B) that has flowed into the heat exchanger (11) is heated and heated by the heat exchanger (11) and is returned from the return path (22) via the first connecting portion (J ₁ ) to the bathtub (B). ). At this time, the collar portion (41) functions as a dispersion plate, and the discharged hot water is
It is dispersed by the brim portion (41) and rises obliquely upward in the bathtub (B) in an inverted conical shape. Mounting flange (F)
Since the collar portion (41) is set slightly higher than that, the opening direction of the annular gap between the open end of the main body portion (3) and the collar portion (41) is obliquely outward (upward). Because. Therefore, in the reheating state, the high-temperature discharge hot water is efficiently dispersed in an inverted conical shape from the bottom of the bathtub (B) to the upper region thereof, and is reliably mixed with the hot water in the bathtub.

Further, during the circulation heating, dust and the like can be prevented from entering the circulation circuit (2) by the filter (36).

Next, two methods can be adopted for draining the hot water in the bathtub (B), one of which is the circuit pump (P) of the switching valve (25) in the bath apparatus (1) and the discharge. The pump (P) is put into operation by switching to a mode in which it communicates with the pipe (26). Then, the hot water in the bathtub (B) flowing into the main body (3) is
The water will be discharged through the route of the second connecting portion (J ₂ ), the pump (P) switching valve (25), the discharge pipe (26) and the drain groove (M). Incidentally, this operation section can be operated by a control panel which is usually a remote operation section of the bath apparatus (1), and in this embodiment, a control circuit as shown in FIG. 3 is incorporated.
Therefore, when the drainage operation part (28) provided on the control panel is operated, the switching valve (25) is switched to a predetermined communication state, and at the same time, the pump (P) is in the operating state, and the drainage progresses to complete the drainage. At this point, the operation of the pump (P) is stopped by the output of the water flow switch (27) provided in the outward path (21). In the case of this drainage operation, the drainage operation part (28)
The drainage is automatically completed by the operation of, and the operation of the pump (P) is automatically stopped when the drainage is completed.

The next drainage method is to drain the water manually. Pull the hanging metal fitting (38) provided in the center of the filter (36) to pull out the filter (36) and the plug body (32) as a unit. In this case, the drainage opening (33) is opened. In this case, the water is drained from the drainage opening (33) to the drain groove (M).

In the above embodiment, the hot water supply chamber (3b) is arranged over the entire inner circumference of the main body (3), but it is arranged in a part of the inner circumference of the main body (3). Correspondingly, the brim portion (41) may be only the formation portion of the hot water supply chamber (3b).

Further, in the illustrated embodiment, the bath device (1) also has a built-in heat exchanger (12) for hot water supply, one of the hot water supply circuits is connected to the circulation circuit (2), and the return path (22). The hot water can be supplied from the inside to the bathtub (B). Therefore, hot water is supplied from the first connecting portion (J ₁ ) to the bathtub (B) even during so-called water filling.

Further, in the above-mentioned embodiment, the bath device of the system in which the bath (B) is circulated and heated has been described, but it is also possible to use this as a mouthpiece of a high-temperature hot water heater.

In the second embodiment shown in FIG. 4, when the hot water in the bathtub (B) is drained, the inside of the bathtub can be washed immediately before the drainage is completed or during the drainage. The water level sensor (S) disposed at the bottom of the drainage chamber (3a) of the main body (3) is used to detect the stage of the drainage.

In this structure, the flange (41) at the upper end of the partition (4) has a tapered surface that is inclined so that the tip end faces upward, and the end surface on the inner surface side of the upper end of the main body (3) also has the taper. It is a tapered surface that faces the surface with a certain gap.
The partition body (4) is arranged over about half of the inner circumference of the main body (3), and has a vertically split semi-cylindrical shape as a whole.

The first connection (J ₁ ) to which the return path (22) is connected and the forward path (2)
The second connecting portion (J ₂ ) to which 1) is connected is configured in the same manner as in the first embodiment, but in this embodiment, the return path (22) side also functions as a water supply circuit or a hot water supply circuit. The solenoid valve (V) for controlling the shower washing operation is inserted in the return path (22).

These solenoid valves (V) and pumps (P), and drain pipes (2
The switching valve (25) for opening and closing the flow path inserted in 6) is designed to be controlled by the electric circuit shown in the figure, and when the drainage operating section is operated, the exciting coil and switching coil of the switching valve (25) The pump (P) is turned on and the drainage operation proceeds.
Then, whether or not this draining operation is completed is detected by the water flow switch (27) as in the first embodiment.

When the water level in the bathtub (B) drops to a certain level as the drainage progresses, the water level sensor (S) detects this and returns to the closed state, and the timer (T) that controls the solenoid valve (V). Becomes conductive. As a result, the output contact of the timer (T) is closed and the exciting coil of the solenoid valve (V) is turned on, so that water or hot water is supplied from the return path (22) for a certain period of time.

At this time, since the gap between the collar portion (41) and the upper end of the main body portion (3) is a predetermined gap, the discharge water from this gap reaches the bathtub wall surface in the form of a shower. The scales and dirt adhering to are washed away and reach the drainage chamber (3a). This cleaning operation ends when the set time of the timer (T) has elapsed, at which time the electromagnetic valve (V) returns to the closed state and the water supply or hot water supply from the return path (22) is stopped. That is,
The shower-like ejection of water is stopped.

The drainage operation continues in this washing process, and when the drainage is completed after the washing is completed, the output of the water flow switch (27) causes the pump (P) to become non-conductive to stop the operation. At the same time, the switching valve (25) also returns to the closed state.

When a cleaning function is added in this way, as shown in the figure, the hot water supply chamber (3b) is provided only on one side of the main body (3), and the hot water supply chamber (3b) is installed. It is advisable to limit the installation position to the side close to the side wall of the bathtub. This is because the discharged water after cleaning smoothly flows from the filter (36) to the discharge chamber (3a).

[Brief description of drawings]

FIG. 1 is an explanatory view of a first embodiment of the present invention, FIG. 2 is an explanatory view of a bath apparatus using the same, FIG. 3 is an electric circuit diagram for automatic drainage, and FIG. 4 is a second embodiment. It is an explanatory view of (3) …… Main part (B) …… Bathtub (32) …… Stopper (33) …… Discharge opening (3a) …… Drainage chamber (3b) …… Hot water supply Room (4): Compartment

Claims (3)

[Claims] 1. A drainage chamber (3a) is defined by a partition (4) in a bottomed cylindrical main body (3) whose upper end is opened and whose open end is attached to the bottom of a bath. It is divided into a hot water supply chamber (3b) surrounded by the body of 3) and the partition body (4), and the upper ends of the two chambers are both opened in the bathtub so as to communicate with the hot water supply chamber (3b). First connection part (J ₁ )
And a second connection portion (J ₂ ) provided so as to communicate with the drainage chamber (3a), and the flange portion (41) is at the upper end of the partition body (4) and on the hot water supply chamber (3b) side. To form an arcuate or annular gap between the upper end of the body of the main body (3) and the collar (41), and the discharge water is directed obliquely upward in the opening direction of the gap. Drain cap for the bathtub set to. 2. The discharge direction is such that the flange portion (41) is projected horizontally and is set higher than the upper end of the body portion of the main body portion (3) so that the arc-shaped or annular gap between them is opened. The drainage mouthpiece for a bathtub according to claim 1, wherein the water is set to face obliquely upward. 3. The drainage mouthpiece for a bathtub according to claim 1, wherein the lower surface of the collar portion (41) is a tapered surface portion that is directed obliquely upward toward the outer peripheral end.