JP3036376B2 - Hot water mixing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water mixing apparatus which mixes hot water and water to supply hot water at an appropriate temperature.

[0002]

2. Description of the Related Art A conventional hot and cold water mixing apparatus of this kind (for example, Japanese Utility Model Application Laid-Open No. 62-119586) is shown in FIGS. In the figure, 1 is a valve body, 2 and 3 are inlet ports, and 4 is an outlet port. The valve chamber 1a between the inlet ports 2 and 3 of the valve body 1 is formed in a cylindrical shape, and a cylindrical valve body 5 having an outer diameter matching the inner diameter of the valve chamber 1a is provided in the valve chamber 1a in a watertight manner. It is movably arranged. A drive shaft 7 of a stepping motor 6 mounted on the upper end surface of the valve body 1 is fixed to the center of one end 5a of the valve body 5;
b is open and communicates with the outlet port 4. In addition, as shown in FIG.
c and 5d, one opening 5c communicates with the inlet port 2 and the other opening 5d communicates with the inlet port 3.
Is in communication with

When the valve element 5 is rotated by the stepping motor 6, the opening areas of the inlet ports 2 and 3 are changed, and the valve ports 1a are passed from the inlet ports 2 and 3 through the openings 5c and 5d.
The flow rates of cold water and hot water flowing into the inside are varied. As shown in the flow rate characteristic diagram of FIG. 12, as the rotational angle position θ of the valve element 5 is rotated by the stepping motor 6, the flow rate of the cold water increases while the flow rate of the hot water decreases. When the stepping motor 6 is rotated in the reverse direction, the valve element 5 is also rotated in the reverse direction, so that the flow rate of the cold water decreases and the flow rate of the hot water increases. The hysteresis in the flow rate characteristic diagram is caused by the backlash of the reduction gear of the stepping motor 6. Also, the linearity of the flow chart on the hot water side is not good because the hot water supply pressure acting on the inlet port 3 on the hot water side is generally lower than the water supply pressure acting on the inlet port 2 and the inlet port 2 When the opening area of the inlet port 3 starts to be reduced after opening, the momentum of the water flowing from the inlet port 2 into the opening 5c of the valve body 5 is increased from the inlet port 3 to the valve body 5.
This is because the water-side dynamic pressure acts so as to close the hot water flowing into the opening 5 d of the valve body 5, and the gradient at which the flow rate of the hot water decreases decreases with respect to the rotation angle of the valve element 5.

On the other end 5b side of the valve element 5, a mixing blade 8 is provided.
Is arranged. The cold water and hot water flowing into the valve chamber 1a from the inlet ports 2 and 3 generate a turbulent flow when passing through the mixing blade 8, and are forcibly mixed.

A thermistor 9 for detecting the temperature of cold water and hot water mixed by the mixing blade 8 is disposed in the outlet port 4. The detection signal of the thermistor 9 is output to the electronic controller 10, where the deviation from the target temperature is obtained, and a control signal corresponding to the deviation is output from the electronic controller 10 to the stepping motor 6.

FIG. 11 shows a water heater provided with the mixing valve. 111 is an electric water heater and 112 is a pressure reducing valve. Valve body 1 from electric water heater 111 through pipe 113
Hot water is supplied to the inlet port 3 of the
2. Cold water is supplied to the inlet port 2 of the valve body 1 through the pipe 114.
Supplied to The cold water and the hot water supplied to the inlet ports 2 and 3 are forcibly mixed by the mixing blade 8 to become mixed water, and the temperature is immediately detected by the detecting means 9 in the outlet port 4. The detection signal is output to the electronic controller 10, and a control signal is output from the electronic controller 10 to the stepping motor 6, and the opening degree of the inlet ports 2 and 3 is changed so that the target temperature is reached. Then, the mixed water adjusted to the target temperature is supplied to each place from the outlet port 4 via the pipe 115.

[0007]

However, the above-described configuration has the following problems.

(1) The mixing promotion depends only on the swirling of the flow by the mixing blade 8, and there is a disadvantage that the pressure loss increases, but the mixing promoting effect is low.

(2) When the flow rate becomes small due to the mixing blade 8, a rectifying effect is produced on the contrary, and the mixing cannot be promoted.

(3) The shape of the mixing blade 8 is complicated, a production die is required, and the number of parts and the number of assembling steps are increased.

The present invention has been made to solve the above problems, and
It is a first object of the present invention to provide a hot and cold water mixing apparatus which can promote mixing of hot and cold water without the need of producing and assembling complicated parts and can accurately and quickly detect a mixing temperature.

A second object is to promote the mixing of hot and cold water without the need to produce and assemble complicated parts, and to accurately adjust the mixing temperature even when one mixing temperature detector switches to any of a plurality of flow paths. It is an object of the present invention to provide a hot and cold water mixing device that can be quickly detected.

A third object is to reduce the pressure loss without increasing the number of parts and the number of assembling steps, and to accurately and quickly detect the mixing temperature even when one of the plurality of flow paths is switched by one mixing temperature detector. An object of the present invention is to provide a compact hot and cold water mixing apparatus.

A fourth object is to reduce the pressure loss without increasing the number of parts and the number of assembling steps, and to accurately and quickly detect the mixing temperature even when switching to any one of a plurality of flow paths with one mixing temperature detector. Another object of the present invention is to provide a compact hot and cold water mixing apparatus having excellent response characteristics and capable of performing accurate temperature control.

[0015]

In order to achieve the first object, a hot water mixing apparatus of the present invention comprises a mixing valve for adjusting a mixing ratio of hot water and water, and a hot water and water in the mixing valve. Direct opposition
A partition wall provided to prevent collision,
A mixing path provided on the outlet side of the valve body and having a plurality of bent portions, and a mixed temperature detector for detecting a mixed hot water temperature are provided downstream of the bent portions.

[0016] Also the hot and cold water mixing device of the present invention to achieve the above first object is mixed to adjust the mixing ratio of hot water
Water and hot water collide directly in the joint valve and the mixing valve.
A partition wall provided for prevention , a mixing passage provided on the outlet side of the mixing valve body and having a substantially L-shaped bent portion, and a lower portion of the mixing passage downstream of the substantially L-shaped bent portion. A mixing temperature detector for detecting the temperature of the mixing hot water is provided.

[0017] Also the hot and cold water mixing device of the present invention to achieve the above first object, mixed to adjust the mixing ratio of hot water
Water and hot water collide directly in the joint valve and the mixing valve.
A partition wall provided for prevention , a mixing path provided on the outlet side of the mixing valve body and having a substantially U-shaped bent portion, and a mixing temperature for detecting the temperature of the mixed hot water downstream of the substantially U-shaped bent portion. It is provided with a detector.

To achieve the above second object, a hot water mixing apparatus of the present invention comprises a mixing valve body for adjusting a mixing ratio of hot water and water.
To prevent direct collision of hot water and water in the mixing valve body.
A flow control switching valve for adjusting the flow rate and switching the flow path of the hot water mixed by the mixing valve body , and a bending provided between the hot water mixing valve and the flow control switching valve. A mixing passage having a portion, and a mixing temperature detector for detecting a mixing hot water temperature downstream of the bent portion.

In order to achieve the third object, a water mixing apparatus according to the present invention comprises a mixing housing having a hot water inflow path, a water inflow path and a mixing and outflow path, and a side face rotatably provided in the mixing housing. the hot water inlet hole and the mixing valve body having a water inlet hole and the end face to the outlet hole, the mixing valve hot water in the body is straight
A partition wall provided to prevent contact collision, a mixing motor for rotatably driving the mixing valve body, a mixing valve for adjusting the mixing ratio of hot water and water, an inflow path and a plurality of outflow paths. A flow regulating housing having a flow regulating valve body rotatably provided in the flow regulating housing, having an outlet hole on a side surface and an inlet hole on an end surface, a flow regulating motor for rotatingly driving the flow regulating valve, A flow control switching valve for controlling the flow rate and switching the flow path of the hot water mixed by the hot water mixing valve, provided with a mixing temperature detector for detecting the temperature of the mixed hot water in an inflow path of the flow control housing; and a mixing outflow path of the mixing housing. And a mixing path for conducting the flow control housing in a substantially U-shape.

To achieve the fourth object, a hot water mixing apparatus of the present invention comprises a mixing housing having a hot water inflow path, a water inflow path and a mixing and outflow path, and a side face rotatably provided in the mixing housing. A mixing valve body having a hot water inlet hole, a water inlet hole and an outlet hole at an end face, and hot water and water directly collide in the mixing valve body between the hot water inlet hole and the water inlet hole of the mixing valve body.
A water mixing valve for adjusting the mixing ratio of hot water and water , provided with a partition wall provided to prevent water mixing, a mixing motor for rotating and driving the mixing valve body, and a flow control having an inflow path and a plurality of outflow paths. A housing, a flow regulating valve rotatably provided in the flow regulating housing, having an outlet hole on a side surface and an inlet hole on an end surface, a flow regulating motor for rotating the flow regulating valve, and the flow regulating housing A mixing temperature detector for detecting the temperature of the mixed hot water in the inflow path, a flow control switching valve for controlling the flow rate and switching the flow path of the hot water mixed by the hot water mixing valve, and the mixing motor and the flow controlling motor are the same. A mixing path for flowing in a substantially U-shape between the mixing outflow path of the mixing housing and the inflow path of the flow control housing in a direction, a temperature setting device for setting a mixing hot water temperature, the mixing temperature detector, and a temperature setting. Comparison operation based on the signal from the It is provided with a mixing valve controller for driving the focus motor.

[0021]

[Action] hot and cold water mixing device of the present invention, the mixing ratio of the flow rate of water and water Ru is adjusted in the mixing valve body. Hot water inlet hole of the mixing valve
Mixing by providing a partition wall between the
The dynamic pressure of the water flow from the water inlet hole of the valve body and from the hot water inlet hole
Direct flow interference that blocks one of the flows
Is stopped. In this way, hot water and water collide directly in the mixing valve body.
To prevent the mixing valve body from rotating
Excellent linearity in water mixing flow rate change, smooth mixing temperature possible
Although it is possible to change, mixing in the mixing valve body is suppressed
However, while passing through the mixing passage provided on the outlet side of the mixing valve body , the flow is disturbed at a plurality of bent portions of the mixing passage, so that the effect of promoting mixing of hot water and water is obtained, and The temperature of the mixed hot water after sufficient mixing is detected by a mixing temperature detector provided downstream. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, the mixing temperature can be detected accurately and quickly , and the mixing flow rate of the hot water with respect to the rotation angle of the mixing valve body.
Excellent linearity of the change, Ru can smooth mixing temperature variable.

Further the hot and cold water mixing device of the present invention, the mixing ratio of the flow rate of water and water Ru is adjusted in the mixing valve body. Of the mixing valve body
By providing a partition wall between the hot water inlet and the water inlet
Of the water flow from the water inlet hole and the hot water inlet hole of the mixing valve body.
Direct flow that blocks either flow by pressure
Interference is prevented. In this way, hot water and water
Preventing close collisions depends on the rotation angle of the mixing valve.
Excellent linearity of change in mixing flow rate of hot and cold water and smooth mixing
The mixing temperature can be varied, but mixing inside the mixing valve is suppressed.
However, since the flow is disturbed at the substantially L-shaped bent portion of the mixing passage while passing through the mixing passage provided on the outlet side of the mixing valve body , a mixing promotion effect of hot water and water is obtained. , Its abbreviation L
A mixing temperature detector provided on the lower side of the mixing passage downstream of the U-shaped bent portion detects the temperature of the mixed hot water after sufficient mixing even if air is mixed in the mixing passage. . Accordingly, promotes mixing of complex parts production and hot water without assembling the water, such as conventional mixing vanes 8, the mixing temperature can be accurately rapidly detected, yet the rotation angle of the mixing valve body
Excellent linearity of change in mixing flow rate of hot and cold water and smooth mixing
If the temperature variable is Ru can.

Further the hot and cold water mixing device of the present invention, the mixing ratio of the flow rate of water and water Ru is adjusted in the mixing valve body. Of the mixing valve body
By providing a partition wall between the hot water inlet and the water inlet
Of the water flow from the water inlet hole and the hot water inlet hole of the mixing valve body.
Direct flow that blocks either flow by pressure
Interference is prevented. In this way, hot water and water
Preventing close collisions depends on the rotation angle of the mixing valve.
Excellent linearity of change in mixing flow rate of hot and cold water and smooth mixing
The mixing temperature can be varied, but mixing inside the mixing valve is suppressed.
However, while passing through the mixing passage provided on the outlet side of the mixing valve body , the flow is disturbed at the substantially U-shaped bent portion of the mixing passage, so that the effect of promoting mixing of hot water and water is obtained. , Its abbreviation U
By the mixing temperature detector provided downstream of the U-shaped bend,
The temperature of the mixed water after sufficient mixing is detected. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and the mixing temperature can be detected accurately and quickly .
Excellent linearity of change of mixing flow rate of hot and cold water, smooth mixing temperature
Variable is Ru can.

Further the hot and cold water mixing device of the present invention, the mixing ratio of the flow rate of water and water Ru is adjusted in the mixing valve body. Of the mixing valve body
By providing a partition wall between the hot water inlet and the water inlet
Of the water flow from the water inlet hole and the hot water inlet hole of the mixing valve body.
Direct flow that blocks either flow by pressure
Interference is prevented. In this way, hot water and water
Preventing close collisions depends on the rotation angle of the mixing valve.
Excellent linearity of change in mixing flow rate of hot and cold water and smooth mixing
The mixing temperature can be varied, but mixing inside the mixing valve is suppressed.
However, while passing through the mixing passage provided on the outlet side of the mixing valve body , the flow is disturbed at the bent portion of the mixing passage, and the mixing of hot water and water is promoted. The temperature of the mixed water after sufficient mixing is detected by the mixed temperature detector. The mixed hot water that has passed through the mixing path is switched to one of a plurality of flow paths by a flow control switching valve, and the flow rate is adjusted. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and the mixing temperature can be detected accurately and quickly .
Excellent linearity of mixing flow rate change of hot and cold water with rotation angle,
Smooth mixing temperature variable is Ru can.

In the hot and cold water mixing apparatus according to the present invention, the mixing valve in the mixing housing of the hot and cold water mixing valve is rotationally driven by the mixing motor, and the mixing ratio of the hot water and the water flowing from the hot water inflow path and the water inflow path is adjusted. Adjusted. Hot water of the mixing valve
By providing a partition wall between the mouth and the water inlet,
For the dynamic pressure of the water flow from the water inlet hole and the hot water inlet hole of the mixing valve
Therefore, direct flow interference that blocks either flow
Is prevented. In this way, hot water and water
Preventing the collision is dependent on the rotation angle of the mixing valve.
Excellent linearity of change of mixing flow rate of hot and cold water and smooth mixing temperature
The mixing inside the mixing valve is suppressed while the
However, the flow is turbulent while entering the inflow passage of the flow control housing of the flow control switching valve from the mixing and outflow passage of the hot and cold water mixing valve through the mixing passage that is conducted in a substantially U-shape, and the mixing of hot water and water is promoted. And
The temperature of the mixed water after sufficient mixing is detected by a mixing temperature detector provided in the inflow passage of the flow control housing. The mixed hot water entering from the inflow passage of the flow control housing is rotated by a flow control motor in a flow control valve body in the flow control housing of the flow control switching valve, and is switched to one of a plurality of flow paths. Is adjusted. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and it is compact without increasing the number of parts and assembling man-hours, has a small pressure loss, and detects one mixing temperature. The mixing temperature can be accurately and quickly detected even when switching to any one of a plurality of flow paths with a mixing device.
Excellent linearity of change of mixing flow rate of hot and cold water, smooth mixing temperature
Variable is Ru can.

Further, in the hot water mixing apparatus of the present invention, the mixing valve having a partition wall between the hot water inlet and the water inlet in the mixing housing of the hot water mixing valve based on a signal from the temperature setting device. The mixing ratio of the flow rates of the hot water and the water flowing from the hot water inflow path and the water inflow path is adjusted by being driven to rotate by the mixing motor. While entering the inflow passage of the flow control housing of the flow control switching valve from the mixing and outflow passage of the hot and cold water mixing valve via the mixing passage substantially U-shaped, the flow is disturbed and the mixing of hot water and water is promoted,
The temperature of the mixed water after sufficient mixing is detected by a mixing temperature detector provided in the inflow passage of the flow control housing. The mixed hot water entering from the inflow passage of the flow control housing is rotated by a flow control motor in a flow control valve body in the flow control housing of the flow control switching valve, and is switched to one of a plurality of flow paths. Is adjusted. Further, by providing a partition wall between the hot water inlet hole and the water inlet hole of the mixing valve body, one of the flows is caused by the dynamic pressure of the water flow from the water inlet hole of the mixing valve body and from the hot water inlet hole. Blocking direct flow interference is prevented. Preventing hot water and water from directly colliding in the mixing valve body as described above has excellent linearity in the mixing flow rate of hot and cold water with respect to the rotation angle of the mixing valve body, and has substantially the same rate of change with respect to the rotation angle of the mixing motor. Thus, the mixing temperature can be varied smoothly, but the mixing in the mixing valve body is suppressed. Nevertheless, as described above, while entering the inflow passage of the flow control housing of the flow control switching valve through the substantially U-shaped conductive mixing passage, the flow is turbulent, and the mixing of hot water and water is promoted, and the inflow of the flow control housing is prevented. The temperature of the mixed hot water after sufficient mixing is detected by a mixing temperature detector provided on the road. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and it is compact without increasing the number of parts and assembling man-hours, has a small pressure loss, and detects one mixing temperature. When switching to any one of the plurality of flow paths by the vessel, the mixing temperature is accurately and quickly detected, and the temperature is controlled accurately and responsively. In addition, temperature hunting can also be prevented from being suppressed, and stable mixing hot water temperature control by the mixing valve controller becomes possible.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a hot water mixing apparatus showing a first embodiment of the present invention. FIGS. 2 (a) to 2 (d) are cross-sectional views of the hot water mixing valve 11 taken along the line AA. , FIG. 3 shows the mixing valve body 1
2 is a perspective view of a mixing valve shaft 13; FIG. In FIG.
Reference numeral 4 denotes a mixing housing, which is a hot water inflow path 15 and a water inflow path 1
6 and a mixed outflow channel 17. Reference numeral 12 denotes a substantially spherical valve element rotatably provided in the mixing housing 14. The mixing valve element 12 has a hot water inlet port 18, a water inlet port 19 on a side surface, and an outlet port 20 on an end face. A partition wall 21 is formed inside the valve body 12 between the hot water inlet hole 18 and the water inlet hole 19. Further, as shown in FIG. 3, the end protruding portion 22 of the mixing valve shaft 13 is provided at the end of the mixing valve body 12 opposite to the outlet hole 20.
Is formed therein.

A ring-shaped groove 25 is formed in the shaft seal portion 24 of the mixing valve shaft 13, and an elastic seal member 26 having an X-shaped cross section is provided in the groove 25. Further, the mixing motor 2 is provided at an end of the mixing valve shaft 13 opposite to the convex portion 22.
7 is formed with a shaft hole 29 into which the drive shaft 28 is inserted.
As shown in FIG. 3, the shape of the shaft hole 29 is formed by symmetrically shaving two circular arc portions, and the mixing valve body 12 is rotated with the rotation of the drive shaft 28 of the mixing motor 27.

The rotation angle regulating member 3 for regulating the rotation range angle of the mixing valve body 12 is provided outside the shaft hole 29 of the mixing valve shaft 13.
0 is provided. In addition, between the hot water inflow path 15 of the mixing housing 14 and the valve body 12 and between the water inflow path 16 and the mixing valve body 12, a ring-shaped seal member 3 is provided.
1, 32 are mounted. A mixing temperature detector 33 detects the mixing temperature, and is provided downstream of the bent portions 35 and 36 of the mixing path 34 on the outlet side of the hot and cold water mixing valve 11. Reference numeral 37 denotes a mixing valve controller that compares the set temperature signal of the temperature setter 38 with the mixed temperature signal of the mixed temperature detector 33 and outputs a drive signal to the mixing motor 27.

The operation of the present embodiment in the above configuration will be described. FIG. 2A shows a state in which the hot water inlet hole 18 is fully opened and the water inlet hole 19 is fully closed. The water inflow passage 16 and the mixing and outflow passage 17 do not communicate with each other, and The seal member 32 between the mixing valve body 12 prevents internal leakage on the water side. FIG. 2 (b) shows a state in which the hot water and the hot water are mixed approximately half and flow out to the mixing outflow passage 17 with both the hot water inlet hole 18 and the water inlet hole 19 in a valve half-open state.
2C shows a state in which the hot water inlet hole 18 is opened by about 20% and the water inlet hole 19 is opened by about 80%. FIG. 2D shows the water inlet hole 19 fully opened, and the hot water inlet hole 18 is opened. In a fully closed state, the hot water inflow path 15 and the mixing and outflow path 17 do not communicate with each other, and the sealing member 31 between the mixing housing 14 and the mixing valve body 12 prevents internal leakage on the water side. Have been.

As shown in FIG. 2 (b), the valve body 12 is
When the valve 8 and the water inlet hole 19 are both in the valve half-open state, the hot water firstly flows into the valve body 12 from the hot water inflow passage 15 through the hot water inlet hole 18 on the side surface of the valve body 12, and the outlet hole 2 extends along the partition wall 21.
Flows to zero. At the same time, water is supplied from the water inflow passage 16 to the water inlet hole 19.
Flows into the inside of the valve body 12 and flows along the partition wall 21 to the outlet hole 20. In this way, hot water and cold water are separated by the partition wall 21 formed inside the valve body 12, flow in parallel on the front and back thereof, and reach the mixing outflow passage 17 of the housing 14 through the outlet hole 20 of the valve body 12. In the case of the conventional mixing valve shown in FIGS. 9 and 10, the opening 5
c and the flow of hot water flowing into the valve body 5 through the opening 5d from the other inlet port 3 collide head-on with each other, and the momentum of the water flow having a high supply pressure. Acts to suppress the flow of hot water having a low supply pressure by the dynamic pressure, and the change in the mixing flow rate of hot water with respect to the rotation angle of the valve body 5 is bent as shown in FIG. In contrast to the fact that the mixing temperature was difficult to vary, in the present embodiment, the hot water and the water are naturally mixed in the forward flow parallel to each other by the partition wall 21. The flow rate can be varied according to the degree of opening of the holes 18 and 19, that is, the rotation angle of the valve body 12, and the flow rate characteristics with excellent linearity as shown in the diagram of FIG.

Therefore, the temperature of the mixed hot water can be smoothly varied according to the rotation angle of the mixing valve body 12 by the mixing motor 27, and the temperature of the mixed hot water can be easily controlled.

A mixing temperature detector 33 for detecting the mixing temperature is provided downstream of the bent portions 35 and 36 of the mixing passage 34 on the outlet side of the hot and cold mixing valve 11, and the hot and cold water flowing out of the mixing and outflow passage 17 is provided. Is disturbed by the plurality of bent portions 35 and 36, and mixing of hot and cold water is promoted, and the temperature of the mixed hot water after sufficient mixing is detected. Therefore, the conventional mixing blade 8
Mixing of hot water and water is promoted without producing and assembling such complicated parts as described above, and the mixing temperature is accurately and quickly detected with less pressure loss.

As described above, according to the present embodiment, the plurality of bent portions 35 and 36 of the mixing path 34 provided on the outlet side of the hot and cold water mixing valve 11 can provide a mixing effect of hot water and water. A mixing temperature detector 33 provided downstream of the bent portions 35 and 36 detects the temperature of the mixed hot water after sufficient mixing. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and the mixing temperature can be detected accurately and quickly, thereby enabling accurate and stable temperature control.

FIG. 5 is a configuration diagram of a hot water mixing apparatus showing a second embodiment of the present invention. The difference from the configuration of the hot water mixing apparatus of FIG. 1 is that a mixing path 34 having a plurality of bent portions 35 and 36 is provided.
A mixing path 41 having a substantially L-shaped bent portion 40,
The mixing temperature detector 33 for detecting the temperature of the mixed hot water is provided on the lower side of the mixing path 41 downstream of the L-shaped bent portion 40, so that the flow is disturbed at the substantially L-shaped bent portion 40 and the mixing of hot and cold water is promoted. In addition, even if mixed air or residual air bubbles are present in the mixing path 41, the mixing temperature detector 33 is inserted below the mixing path 41, so that the upper mixing Rather than the temperature of air or residual air bubbles, the temperature of the mixed hot and cold water flowing on the lower side in the mixing path 41 can be detected firmly, accurately and quickly.

As described above, according to the present embodiment, the mixing temperature detector 33 provided on the lower side of the mixing passage 41 downstream of the substantially L-shaped bent portion 40 allows the mixing air to enter the mixing passage. Even if it remains, the mixed hot water temperature after mixing is detected.
Therefore, mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and the mixing temperature of hot water and not mixed air can be detected quickly and accurately, and accurate and stable temperature control can be achieved. Will be possible.

FIG. 6 is a block diagram of a hot water mixing apparatus showing a third embodiment of the present invention. The mixing apparatus having a substantially U-shaped bent portion 42 provided on the outlet side of the hot water mixing valve 11 of FIG. Road 43
And a mixed temperature detector 33 for detecting the temperature of the mixed hot water downstream of the substantially U-shaped bent portion 42.
The flow of the hot and cold water flowing out of the heater is disturbed by the substantially U-shaped bent portion 42, and the mixing of the hot and cold water is promoted, and the temperature of the mixed hot water after the mixing is sufficiently detected. Therefore, mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and the mixing temperature is detected quickly and accurately with little pressure loss.

As described above, according to the present embodiment, the substantially U-shaped bent portion 42 of the mixing passage 43 provided on the outlet side of the hot and cold water mixing valve 11 provides a mixing effect of hot water and water. The temperature of the mixed hot water after sufficient mixing is detected by the mixing temperature detector 33 provided downstream of the substantially U-shaped bent portion 42. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and the mixing temperature can be detected accurately and quickly, thereby enabling accurate and stable temperature control.

FIG. 7 is a block diagram of a hot water mixing apparatus showing a fourth embodiment of the present invention. The hot water mixing valve 11 of FIG. 1 and the flow rate adjustment and flow of hot water mixed by the hot water mixing valve 11 are shown. A flow control switching valve 44 for switching a path, and a mixing path 4 provided between the hot / water mixing valve 11 and the flow control switching valve 44 and having a bent portion 45.
6, and a mixing temperature detector 33 for detecting the temperature of the mixed hot water downstream of the bent portion 46. The flow control switching valve 44 has an inflow path 47, a first outflow path 48, and a second outflow path 49. A flow control housing 50, an outlet hole 51 on the side surface rotatably provided in the flow control housing 50, and an inlet hole 5 on the end surface.
2. A flow regulating valve 53 having a flow control valve 2 and a flow regulating motor 54 for driving the flow regulating valve 53 to rotate.
In a state where 1 faces the first outflow channel 48 as shown in FIG. 7, the second outflow channel 49 is closed, and hot water flows through the first outflow channel 48. In this case, the flow rate discharged from the shower discharge port 56 via the first outflow path 48 is changed depending on the rotational relative position of the outlet hole 51 with respect to the ring-shaped seal member 55, that is, the rotational angle position of the flow regulating valve body 53. In a state where the outlet hole 51 of the flow regulating valve 53 is directed toward the second outflow channel 49, the first outflow channel 48 is closed, and hot water flows through the second outflow channel 49. In this case, the flow rate flowing out of the curran discharge port 58 via the second outflow path 48 is changed depending on the rotational relative position of the outlet hole 51 with respect to the ring-shaped seal member 57, that is, the rotational angle position of the flow regulating valve body 53. When the outlet hole 51 of the flow regulating valve body 53 does not face any direction of the first outflow path 48 and the second outflow path 49 and is located at an intermediate rotation angle position, the first outflow path 48 and the second outflow path Road 49
Are in a closed state.

As described above, according to this embodiment, the mixing ratio of the flow rates of hot water and water is adjusted by the hot water mixing valve 11 and passes through the mixing passage 46 provided at the outlet side of the hot water mixing valve 11. In the meantime, the flow is disturbed at the bent portion 45 of the mixing passage 46 to promote mixing of hot water and water, and the mixed hot water after being sufficiently mixed by the mixing temperature detector 33 provided downstream of the bent portion 45. Temperature is detected. The mixed hot water having passed through the mixing passage 46 is switched to one of the plurality of flow passages 48 and 49 by the flow control switching valve 44, and the flow rate thereof is adjusted. Therefore, mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and even when one of the plurality of flow paths 48 and 49 is switched by one mixing temperature detector 33, The mixing temperature is accurately and quickly detected, and accurate and stable temperature control becomes possible.

FIG. 8 is a block diagram of a hot water mixing apparatus showing a fifth embodiment of the present invention, in which a hot water inflow path 59 and a water inflow path 60 are provided.
A mixing housing 62 having a mixing outlet port 61, a mixing valve body 66 rotatably provided in the mixing housing 62 and having a hot water inlet hole 63, a water inlet hole 64 on a side surface, and an outlet hole 65 on an end surface; A hot water mixing valve 68 having a mixing motor 67 for rotatingly driving a mixing valve body 66 to adjust the mixing ratio of hot water and water; a flow control housing 72 having an inflow passage 69 and a plurality of outflow passages 70 and 71; Tone housing 72
Flow regulating valve body 75 rotatably provided therein and having an outlet hole 73 on a side surface and an inlet hole 74 on an end surface, and the flow regulating valve body 75
Motor 76 for rotating the motor and a flow control housing 72
Temperature detector 77 for detecting the temperature of mixed hot water in the inflow passage 69
A flow control switching valve 78 for adjusting the flow rate and switching the flow path of the hot water mixed by the hot water mixing valve 68;
A mixing path 79 is provided to connect the mixing outflow path 61 and the inflow path 69 of the flow control housing 72 in a substantially U-shape.

The operation of the hot water mixing valve 68 is the same as that of the hot water mixing valve 11 described in the previous embodiments, and the operation of the flow control switching valve 78 is the flow control switching described in the fourth embodiment. Since it is the same as the valve 44, the description of the mixing operation and the flow control switching operation is omitted. As shown in FIG. 8, the hot water mixing valve 68 and the flow control switching valve 78 are both spherical valves.
The structure of the flow control housing 72 of the flow control switching valve 78 differs from that of the flow control housing 72 only in the presence or absence of a processing hole into which the mixing temperature detector 77 is inserted.
The other parts are the same, so that the parts processing process can be shared and the mass production cost can be reduced.

As shown in FIG. 8, a mixing passage 79 is formed to connect the mixing outflow passage 61 of the mixing housing 62 and the inflow passage 69 of the flow adjustment housing 72 in a substantially U-shape. Since the mixing temperature detector 77 for detecting the temperature of the mixing water is provided at 69, the water in the mixing outflow channel 61 of the mixing housing 62 first strikes the inner wall surface 83 of the mixing channel 79, and then collides with the wall surface 84. And flows into the inflow passage 69 of the flow control housing 72, so that the flow is disturbed and the mixing of hot and cold water is promoted. In addition, the mixing / outflow channel 61 and the inflow channel 69 are circular in shape, and the mixing channel 79 is formed in a flat rectangular shape. Thus, the mixing / outflow channel 61 and the inflow channel 69 are different from the mixing channel 79 in cross section. The turbulent mixing is further promoted by the shape, and after the turbulent flow is sufficiently mixed, the accurate temperature of hot and cold water is detected by the temperature detector 77 provided in the inflow passage 69 of the flow control switching valve 78.

A mixing temperature detector 77 for detecting the temperature of the mixed hot water is provided in the inflow passage 69 of the flow control housing 72, and the mixing outflow passage 61 of the mixing housing 62 and the inflow passage 69 of the flow control housing 72 are connected to the mixing passage 79. In other words, the mixing passage 79 has a U-turn connection between the mixing outflow passage 61 and the inflow passage 69 of the flow control housing 72 through the mixing passage 79, so that the mixing passage 79 is straight without bending. The structure shown in FIG. 8 formed in the passage is possible, and the mixing passage 79 can be easily manufactured at low cost. Furthermore, the connecting portion of the connecting housing 80 forming the mixing path 79 and the hot / cold water mixing valve 68 and the flow control switching valve 78 is fitted through the seal members 81 and 82, so that it can be easily assembled only by screwing. It is possible to make the hot and cold water mixing device more compact than using a U-shaped bent pipe.

As described above, according to this embodiment, the mixing valve body 66 in the mixing housing 62 of the hot and cold water mixing valve 68 is driven to rotate by the mixing motor 67 and flows in from the hot water inflow path 59 and the water inflow path 60. The mixing ratio of hot water and water flow is adjusted. A flow control switching valve 78 through a mixing passage 79 that is conducted in a substantially U-shape from the mixing / outflow passage 61 of the hot / water mixing valve 68.
After entering the inflow passage 69 of the flow control housing 72, the flow is turbulent and the mixing of hot water and water is promoted, and after the mixing is sufficiently performed by the mixing temperature detector 77 provided in the inflow passage 69 of the flow control housing 72. The mixed hot water temperature is detected. Its flow control housing 72
The mixed hot water that has entered through the inflow passage 69 is rotated by a flow control motor 76 in a flow control valve body 75 in a flow control housing 72 of a flow control switching valve 78, and is switched to one of a plurality of flow paths 70, 71. And the flow rate is adjusted. Therefore,
Mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and it is compact without increasing the number of parts and assembling man-hours.
Even when one of the plurality of flow paths is switched by one mixing temperature detector, the mixing temperature can be accurately and quickly detected.

FIG. 9 is a block diagram of a hot water mixing apparatus showing a sixth embodiment of the present invention.
A mixing housing 85 having a mixing outlet 85 and a mixing valve body 12 rotatably provided in the mixing housing 85 and having a hot water inlet hole 18 and a water inlet hole 19 on a side surface and an outlet hole 20 on an end surface. Mixing water for adjusting the mixing ratio between hot water and water, provided with a partition wall 21 provided between the hot water inlet hole 18 and the water inlet hole 19 of the mixing valve body 12 and a mixing motor 27 for driving the mixing valve body 12 to rotate. A flow control housing 87 having a valve 86, an inflow passage 69 and a plurality of outflow passages 70, 71, a flow control housing 87 rotatably provided in the flow control housing 87 and having an outlet hole 73 on a side surface and an inlet hole 74 on an end surface. Valve body 75
And a flow control motor 76 for rotatingly driving the flow control valve 75.
And a flow control switching valve 88 which is provided with a mixing temperature detector 77 for detecting the temperature of the mixed hot water in the inflow passage 69 of the flow control housing 87 to adjust the flow rate of hot water mixed by the hot water mixing valve 86 and to switch the flow path.
A mixing path 89 in which the mixing motor 27 and the flow control motor 76 face in the same direction, and the mixing path 89 of the mixing housing 85 and the inflow path 69 of the flow control housing 87 are substantially U-shaped.
90, a temperature setting device 38 for setting the temperature of the mixed hot water, and a mixing valve controller 37 for driving the mixing motor 27 by performing a comparison operation based on signals from the mixing temperature detector 77 and the temperature setting device 38. is there.

Here, the operation of the hot water mixing valve 86 is the same as that of the hot water mixing valve 1 described in the first embodiment with reference to FIGS.
1 and the operation of the flow control switching valve 88 is the same as that of the flow control switching valve 44 described in the fourth embodiment, so that the description of the mixing operation and the flow control switching operation is omitted. In addition,
As shown in FIG. 9, both the hot water mixing valve 86 and the flow control switching valve 88 are spherical valves, so that the structure of the mixing housing 85 of the hot water mixing valve 86 and the flow control housing 87 of the flow control switching valve 88 is different from the mixing temperature. The other parts are the same except for the presence or absence of a processing hole into which the detector 77 is inserted, so that the parts processing step can be shared and the mass production cost can be reduced.

As shown in FIG. 9, mixing paths 89 and 90 are formed to connect the mixing / outflow path 17 of the mixing housing 85 and the inflow path 69 of the flow control housing 87 in a substantially U-shape. Since the mixing temperature detector 77 for detecting the temperature of the mixing hot water is provided in the inflow passage 69, the mixing housing 85
The hot and cold water flowing through the mixing outflow channel 17 first flows on the inner wall surfaces 91 of the mixing channels 89 and 90, and then in such a manner as to collide with the wall surface 92, and enters the inflow channel 69 of the flow control housing 87. Hot water mixing is promoted. In addition, the mixing / outflow channel 17 and the inflow channel 69 are formed in a circular shape, and the mixing channels 89 and 90 are formed in a flat rectangular shape. Thus, the mixing / outflow channel 17 and the inflow channel 69 and the mixing channels 89 and 90 are formed. The turbulent flow mixing is further promoted by having different cross-sectional shapes, and after sufficient mixing, the accurate hot and cold water temperature is detected by the temperature detector 77 provided in the inflow passage 69 of the flow control switching valve 88. .

Further, a mixing temperature detector 77 for detecting the temperature of the mixed hot water is provided in the inflow passage 69 of the flow control housing 87, and the mixing outflow passage 17 of the mixing housing 85 and the inflow passage 69 of the flow control housing 87 are connected to the mixing passage 89. , 90, in other words, a configuration in which the mixing outflow path 17 and the inflow path 69 of the flow control housing 87 are U-turn connected by the mixing paths 89, 90.
5 is formed in a substantially L-shape, a part of which is a mixing passage 89, and the inflow passage 69 of the flow control housing 87 is also substantially L-shaped.
FIG.
Such a configuration is possible, and the connection housing 80 of the fifth embodiment in FIG. 8 is not required, and a compact hot and cold water mixing apparatus having a small number of parts and a small number of assembly steps can be provided.

Further, the mixing motor 27 and the flow control motor 76 face in the same direction, and the mixing outflow path 17 of the mixing housing 85 and the inflow path 69 of the flow control housing 87 are mixed with the mixing paths 89 and 90.
When the hot and cold water mixing device is installed and used in a humid place such as a bathroom, the mixing motor 27 and the flow-regulating motor 7 which are electrical components are used.
A specific effect that only the portion 6 is covered with the electrical case and the pipe portion of the electrical case penetrates through the bathroom wall and is ventilated to the outside of the bathroom, thereby simplifying a configuration (not shown) for protecting the bathroom from moisture. There is.

As described above, according to this embodiment, the partition between the hot water inlet hole 18 and the water inlet hole 19 in the mixing housing 85 of the hot water mixing valve 86 based on the signal from the temperature setting device 38. The mixing valve body 12 provided with the wall 21 is
7, the mixing ratio of the flow rates of the hot water and the water flowing from the hot water inflow path 15 and the water inflow path 16 is adjusted. While entering the inflow passage 69 of the flow control housing 87 of the flow control switching valve 88 via the mixing passages 89 and 90 conducted in a substantially U-shape from the mixing and outflow passage 17 of the hot and cold water mixing valve 86, the flow The mixing of the water is promoted, and the temperature of the mixed water after the mixing is sufficiently detected by the mixing temperature detector 77 provided in the inflow passage 69 of the flow control housing 87 is detected. Its flow control housing 8
7 flows into the flow control valve body 75 in the flow control housing 87 of the flow control switching valve 88.
, And is switched to one of the plurality of flow paths 70 and 71 to adjust the flow rate. Further, by providing a partition wall 21 between the hot water inlet hole 18 and the water inlet hole 19 of the mixing valve body 12, the water inlet hole 1 of the mixing valve body 12 is provided.
The direct flow interference that blocks one of the flows is prevented by the dynamic pressure of the water flow from the hot water inlet 9 and the hot water inlet hole 18. Preventing hot water and water from directly colliding in the mixing valve body 12 as described above is excellent in the linearity of the mixing flow rate change of the hot and cold water with respect to the rotation angle of the mixing valve body 12, and the mixing motor 27 and the mixing valve body 12 Although the mixing temperature can be varied smoothly at substantially the same rate of change with respect to the rotation angle of the rotation angle, the mixing in the mixing valve body 12 is suppressed. Nevertheless, while entering the inflow passage 69 of the flow control housing 87 of the flow control switching valve 88 via the mixing passages 89 and 90 which are substantially U-shaped as described above, the flow is disturbed and the mixing of hot water and water is promoted. The temperature of the mixed hot water after being sufficiently mixed is detected by the mixing temperature detector 77 provided in the inflow passage 69 of the flow control housing 87. Therefore, the mixing of hot water and water is promoted without producing and assembling complicated parts such as the conventional mixing blade 8, and it is compact without increasing the number of parts and assembling man-hours, has a small pressure loss, and detects one mixing temperature. When switching to any one of the plurality of flow paths by the vessel, the mixing temperature is accurately and quickly detected, and the temperature is controlled accurately and responsively. In addition, it is possible to provide a hot and cold water mixing apparatus that can prevent temperature hunting from being suppressed and can stably control the temperature of mixed hot water by a mixing valve controller.

[0053]

As described in detail above, the hot water mixing apparatus of the present invention prevents direct collision of hot water and water in the mixing valve.
By providing a mixing wall having a plurality of bent portions provided on the outlet side of the mixing valve body ,
The mixing temperature of hot water and water can be detected accurately and quickly , and the mixing valve
Excellent linearity of change in mixing flow rate of hot and cold water with rotation angle of body
Are, Ru can smooth mixing temperature variable.

Further, the hot and cold water mixing apparatus of the present invention provides a mixing valve
Partition provided to prevent hot and cold water from directly colliding
The mixing temperature detector is provided below the mixing wall downstream of the mixing path downstream of the substantially L-shaped bent portion provided on the outlet side of the mixing valve body, so that mixed air remains in the mixing path. are mixed hot water temperature after mixing even if the detection, without complex component production and assembly, the hot water of the mixing temperature rather than the air mixed accurately quickly be detected, yet the rotation angle of the mixing valve body
The linearity of the change in the mixing flow rate of hot and cold water is excellent, and accurate and stable temperature control becomes possible.

[0055] In the hot and cold water mixing device of the present invention, the mixing valve body
Partitions hot water is provided in order to prevent the direct impingement in
By providing a mixing path having a substantially U-shaped bent portion on the outlet side of the mixing wall and the mixing valve body, an effect of promoting mixing of hot water and water is obtained, and the mixing passage is provided downstream of the substantially U-shaped bent portion. the obtained mixed temperature detector, well-mixed mixed hot water after it is detected, without production and assembly of complex parts, the mixing temperature can be accurately rapidly detected, yet the rotation angle of the mixing valve body
The linearity of the change in the mixing flow rate of hot and cold water is excellent, and accurate and stable temperature control becomes possible.

In the hot and cold water mixing apparatus of the present invention, hot water and
Equipped with a mixing valve body with a partition wall to prevent collision
Providing a mixing path with a bend between the hot / cold mixing valve and the flow control switching valve to produce and assemble complex parts even when switching to any one of multiple flow paths with one mixing temperature detector without a small pressure loss, the mixing temperature can be accurately rapidly detected, yet the hot water relative to the rotation angle of the mixing valve body
The linearity of the change in the mixing flow rate of water is excellent, and accurate and stable temperature control becomes possible.

The hot and cold water mixing apparatus of the present invention can
Equipped with a mixing valve body with a partition wall to prevent collision
By making the mixing outflow path of the mixing housing of the hot water mixing valve and the inflow path of the flow control housing into a substantially U-shaped mixing path, the number of parts and the number of assembling steps are not increased, and the apparatus is compact and pressure loss is small. When one of the plurality of flow paths is switched by one mixing temperature detector, the mixing temperature can be accurately and quickly detected , and the hot water with respect to the rotation angle of the mixing valve body can be detected.
Excellent linearity of change in mixing flow rate of water, accurate and stable temperature
Control becomes possible.

Further, in the hot water mixing apparatus of the present invention, the mixing outflow path of the mixing housing of the hot water mixing valve and the inflow path of the flow control housing having a mixing valve body having a partition wall provided between the hot water inlet hole and the water inlet hole. When the mixing path is substantially U-shaped, the number of parts and the number of assembling steps are not increased, the size is compact, the pressure loss is small, and one of the plurality of flow paths is switched by one mixing temperature detector. In addition, the mixing temperature can be accurately and quickly detected, the temperature can be controlled accurately and responsively, and the temperature hunting can be prevented or suppressed. Can be

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot water mixing apparatus showing a first embodiment of the present invention.

FIG. 2A is a sectional view taken along the line AA of the hot water mixing valve of the hot water mixing apparatus taken along line AA, and FIG. 2B is a sectional view of the hot water mixing valve of the same hot water mixing apparatus. A sectional view (c) 20% of the hot water inlet hole of the hot water mixing valve of the hot water mixing apparatus,
AA sectional view showing a state in which the water inlet hole is opened by 80%. (D) AA sectional view showing a fully closed state of the hot water inlet hole of the hot water mixing valve of the hot water mixing apparatus.

FIG. 3 is an exploded perspective view of a valve body of the hot and cold water mixing valve.

FIG. 4 is a flow rate characteristic diagram of the hot water mixing valve.

FIG. 5 is a configuration diagram of a hot water mixing apparatus showing a second embodiment of the present invention.

FIG. 6 is a configuration diagram of a hot water mixing apparatus showing a third embodiment of the present invention.

FIG. 7 is a configuration diagram of a hot and cold water mixing apparatus showing a fourth embodiment of the present invention.

FIG. 8 is a configuration diagram of a hot and cold water mixing apparatus showing a fifth embodiment of the present invention.

FIG. 9 is a configuration diagram of a hot and cold water mixing apparatus showing a sixth embodiment of the present invention.

FIG. 10 is a cross-sectional view of a conventional hot water mixing apparatus.

FIG. 11 is a sectional view of a valve body of the mixing valve.

FIG. 12 is a configuration diagram of a water heater provided with the mixing valve.

FIG. 13 is a flow rate characteristic diagram of the mixing valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Mixing valve 12 Mixing valve body 14 Mixing housing 15 Hot water inflow passage 16 Water inflow passage 17 Mixing outflow passage 18 Hot water inlet hole 19 Water inlet hole 20 Outlet hole 21 Partition wall 27 Mixing motor 33 Mixing temperature detector 34 Mixing passage 35 Bent portion 36 bent portion 37 mixing valve controller 38 temperature setting device 39 hot and cold water mixing valve 40 substantially L-shaped bent portion 41 mixing path 42 substantially U-shaped bent portion 43 mixing path 44 flow control switching valve 45 bent portion 46 mixing path 59 hot water inflow Road 60 Water inflow path 61 Mixing / outflow path 62 Mixing housing 63 Hot water inlet hole 64 Water inlet hole 65 Outlet hole 66 Mixing valve element 67 Mixing motor 68 Hot / water mixing valve 69 Inflow path 70 Outflow path 71 Outflow path 72 Flow control housing 73 Outlet hole 74 inlet hole 75 flow regulating valve 76 flow regulating motor 77 mixing temperature detector 78 flow regulating switching valve 79 mixing path 85 mixing housing 86 hot water mixing valve 87 flow control housing 88 flow control switching valve 89, 90 mixing path

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 31/66 F16K 11/087 F16K 31/04

Claims (6)

(57) [Claims] A mixing valve for adjusting a mixing ratio of hot water and water ;
To prevent hot water and water from directly colliding in the mixing valve body.
Water mixing comprising: a partition wall provided for the mixing, a mixing path provided on the outlet side of the mixing valve body and having a plurality of bent portions, and a mixing temperature detector downstream of the bent portions for detecting the temperature of the mixed hot water. apparatus. 2. A mixing valve body for adjusting a mixing ratio of hot water and water ,
To prevent hot water and water from directly colliding in the mixing valve body.
A mixing wall provided on the outlet side of the mixing valve body and having a substantially L-shaped bent portion; and a mixed hot water downstream of the substantially L-shaped bent portion in the mixing passage. A hot and cold water mixing device comprising a mixing temperature detector for detecting a temperature. 3. A mixing valve body for adjusting a mixing ratio of hot water and water ;
To prevent hot water and water from directly colliding in the mixing valve body.
A mixing wall having a substantially U-shaped bent portion provided on the outlet side of the mixing valve body , and a mixing temperature detector for detecting the temperature of the mixed hot water downstream of the substantially U-shaped bent portion. A hot and cold water mixing device comprising: 4. A mixing valve body for adjusting a mixing ratio of hot water and water ,
To prevent hot water and water from directly colliding in the mixing valve body.
A flow control valve for adjusting the flow rate and switching the flow path of the hot water mixed by the mixing valve body , and a bent portion provided between the hot water mixing valve and the flow control switching valve. And a mixing temperature detector downstream of the bent portion for detecting the temperature of the mixed hot water. 5. A mixing housing having a hot water inflow path, a water inflow path, and a mixing and outflow path, a mixer rotatably provided in the mixing housing and having a hot water inlet port, a water inlet port on a side surface, and an outlet port on an end face. Hot water and water directly impact in the valve body and the mixing valve body.
A partition wall provided to prevent collision, a mixing motor for rotatably driving the mixing valve body, a mixing valve for adjusting a mixing ratio of hot water and water, an inflow path and a plurality of outflow paths. A flow regulating housing, a flow regulating valve body rotatably provided in the flow regulating housing, having an outlet hole on a side surface and an inlet hole on an end surface, a flow regulating motor for rotating and driving the flow regulating valve, A flow control switching valve for controlling a flow rate and switching a flow path of hot water mixed by the hot water mixing valve, provided with a mixing temperature detector for detecting a mixed hot water temperature in an inflow passage of the mixing housing; A hot water mixing apparatus comprising: a mixing path that conducts substantially in a U-shape with an inflow path of the flow control housing. 6. A mixing housing having a hot water inflow path, a water inflow path, and a mixing and outflow path, a mixing section rotatably provided in the mixing housing and having a hot water inlet port, a water inlet port on a side surface, and an outlet port on an end face. It is assumed that hot water and water directly collide in the mixing valve body between the valve body and the water inlet hole and the water inlet hole of the mixing valve body.
A partition wall provided for prevention, a hot / water mixing valve having a mixing motor for rotatingly driving the mixing valve body and adjusting a mixing ratio of hot water and water, and a flow control housing having an inflow passage and a plurality of outflow passages. A flow regulating valve body rotatably provided in the flow regulating housing and having an outlet hole on a side surface and an inlet hole on an end surface, a flow regulating motor for rotating the flow regulating valve body, and an inflow of the flow regulating housing. A mixing temperature detector for detecting the mixing hot water temperature in the path, a flow control switching valve for controlling the flow rate and switching the flow path of the hot water mixed by the hot water mixing valve, and the mixing motor and the flow control motor moving in the same direction. Orientation: a mixing path that connects the mixing outflow path of the mixing housing and the inflow path of the flow control housing in a substantially U-shape, a temperature setting device that sets a mixing hot water temperature,
A hot and cold water mixing device comprising: a mixing valve controller that drives the mixing motor by performing a comparison operation based on a signal from the mixing temperature detector and a temperature setting device.