JPH06249361A - Mixing device for water combination faucet - Google Patents

Abstract

PURPOSE:To provide a device which is designed to have an excellent function of regulating temperature to a target value by mixing together hot water and cold water through energization of a body through the force of a spring formed of a material the constant of which is changed according to temperature. CONSTITUTION:The temperature fluctuation of high temperature water is exerted on the temperature-sensitive spring 170 of a flow rate regulating valve 100 on the high temperature side to change a load, a flow rate is decreased with the increase of the temperature of high temperature water, and a flow rate is increased with the decrease of the temperature of high temperature water. Further, the temperature- sensitive spring 270 of a flow rate regulating valve 200 on the low temperature side is caused to increase a flow rate with the increase of the temperature of low temperature water and decrease a flow rate with the decrease of the temperature of high temperature water. This constitution causes a hot water cold water mixing device 100 to maintain the temperature of mixture of hot water and cold water at a constant value through control of a flow rate by the flow rate regulating valve 100 on the high temperature side and the flow rate regulating valve 200 on the low temperature side even when the temperature fluctuation of high temperature water or low temperature water is produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing apparatus for mixing hot and cold water by urging a valve element by using a spring made of a material whose spring constant changes with temperature.

[0002]

2. Description of the Related Art Conventionally, as a hot and cold water mixing apparatus used in a bathroom or a kitchen, for example, hot water flowing out from a water heater through a hot water flow rate control valve and hot water flowing out from a water pipe through a hot water flow rate control valve. There is a method in which the hot water and the low-temperature water are mixed with each other, and the flow rates of the high-temperature water and the low-temperature water are separately adjusted by operating the manual handle of the hot water side and the flow rate control valve, and the mixed hot-water is discharged at a target discharge temperature. In such a manual hot-water mixing apparatus, the discharge water temperature changes according to the temperature change of the high-temperature water or tap water from the water heater, and it is necessary to readjust it, which is not convenient.

As a hot and cold water mixing device for solving this problem,
Proposal of an automatic temperature control type hot and cold water mixing tap that constantly controls the temperature of the hot and cold water mixture by energizing a movable valve body that controls the mixing ratio of hot water and water using a shape memory alloy that changes shape depending on temperature Has been done (Actual public Sho 61-4406
2). This is because if a temperature-sensitive spring made of a shape memory alloy is set to a certain shape under a specific temperature, the initial set temperature is given even if the shape is physically changed under other temperatures. , Is to restore the shape when set again.

In this hot and cold water mixing device, one of the movable valve bodies is biased by a temperature sensitive spring exposed to the mixed hot water, and the other is biased by a bias spring. The temperature of the mixed hot water is adjusted by moving the movable valve body according to the change in the load and changing the area of the flow passage openings of the hot water side port and the water side port by the movement of the movable valve body.

[0005]

However, in the hot and cold water mixing apparatus, since the opening areas of the hot water port and the water side port are changed at the same time with respect to the movable valve body, the inclination of the movable valve body is increased. If the sealing property is deteriorated by such factors as described above, there is a problem in that the mixing ratio of hot water and water from the hot water port and the hot water port changes abruptly, and the temperature control function is significantly impaired. Moreover, since the temperature-sensitive spring cannot generate a large load and cannot stably drive the movable valve element with a large force, the problem of deterioration of the sealing property caused by the inclination of the movable valve element is remarkable. Met.

The present invention is to solve the above-mentioned problems of the prior art and is an apparatus for discharging hot water mixed with hot water and low temperature water, which has an excellent temperature adjusting function to a target temperature. It is an object to provide a mixing device.

[0007]

SUMMARY OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, has a high temperature side flow control valve having a valve flow path connected to a high temperature side flow path for passing high temperature water, and a low temperature water flow path. A low temperature side flow rate control valve having a valve flow path connected to the low temperature side flow path, and mixing high temperature water flowing out from the high temperature side flow rate controlling valve with low temperature water flowing out from the low temperature side flow rate controlling valve. In a hot and cold water mixing device that discharges mixed hot and cold water at a target temperature,
The high temperature side flow rate control valve is a high temperature side valve body that is provided to open and close the valve flow path, and is a product of a deviation between the temperature of the high temperature water exposed to the high temperature water and a target temperature and a flow rate of the high temperature water. A first temperature-sensitive urging unit that urges the high-temperature side valve body to adjust the opening so that the amount of heat represented is toward a constant value, and the low-temperature side flow rate control valve opens and closes the valve flow path. And the low temperature side valve body so that the heat quantity represented by the product of the deviation between the target temperature and the temperature of the low temperature water and the flow rate of the low temperature water is exposed to the low temperature water toward a constant value. A second temperature-sensing means for urging the valve to adjust the opening degree.

Further, the invention of claim 2 is the hot and cold water mixing apparatus according to claim 1, wherein the first temperature-sensitive energizing means and / or the second temperature-sensitive energizing means controls the temperature within a predetermined temperature range. A spring made of a material whose spring constant changes accordingly is used.

[0009]

In the hot and cold water mixing apparatus according to the present invention, the high temperature water flowing out from the high temperature side flow passage through the high temperature side flow control valve and the low temperature water flowing out from the low temperature side flow passage through the low temperature side flow control valve are provided. , Mix and spit mixed hot and cold water. At this time, the flow rate of the high temperature water is adjusted by the high temperature side flow rate adjusting valve and the flow rate of the low temperature water is adjusted by the low temperature side flow rate adjusting valve, and the mixed hot water is discharged at the target temperature.

In such a high temperature side flow rate control valve, the high temperature side high temperature side valve body biased by the first temperature sensing biasing means opens and closes with respect to the valve flow path to regulate the flow rate thereof. First
The temperature-sensitive urging means is exposed to high-temperature water and changes the urging force to the high-temperature side valve body according to the temperature to adjust the opening degree. First
The temperature-sensitive energizing means adjusts the opening degree of the high temperature side valve body so that the heat quantity represented by the product of the deviation between the temperature of the high temperature water and the target temperature and the flow rate of the high temperature water approaches a constant value. That is, the high temperature side flow rate control valve compensates the amount of heat of the hot water that acts to increase the temperature of the mixed hot water so that the temperature of the hot water becomes a constant value.

The low temperature side flow rate control valve, like the high temperature side flow rate control valve, controls the flow rate by opening and closing the valve flow path by the low temperature side valve body biased by the second temperature sensing biasing means. Although changed, the urging force of the second temperature-sensitive urging means causes the low temperature side valve body to move so that the heat quantity represented by the product of the deviation between the target temperature and the temperature of the low temperature water and the flow rate of the low temperature water approaches a constant value. Control the opening. That is, the low-temperature side flow rate control valve compensates the amount of heat of the low-temperature water that acts to lower the temperature so that the temperature of the mixed hot-water approaches the target temperature.

Therefore, even if the temperature of the hot water or the cold water changes, the urging force of the first and second temperature-sensitive urging means provided on the high temperature side flow control valve and the low temperature side flow control valve, respectively, is used. The flow rate of high-temperature water or low-temperature water is adjusted, and the mixed hot water is discharged at the target temperature.

According to the second aspect of the invention, as the first temperature-sensitive urging means and / or the second temperature-sensitive urging means, for example, a spring made of a shape memory alloy whose spring constant changes according to temperature is used. The opening degree of the valve element is adjusted by changing the biasing force based on the change in the spring constant.

[0014]

Preferred embodiments of the present invention will be described below in order to further clarify the structure and operation of the present invention described above.

FIG. 1 is a sectional view showing a hot and cold water mixing apparatus used in a bathroom, a kitchen and the like according to this embodiment. The hot water / water mixing device 10 includes a high temperature water side pipe 20 for circulating high temperature water supplied from a water heater, a low temperature water side pipe 30 for directly connecting low temperature water to a tap water pipe, and both pipes 20. , 30 are connected to each other, and a mixing pipe 40 for discharging hot water mixed with the high temperature water and the low temperature water is provided.

A high temperature side flow rate control valve 100 for controlling the flow rate of high temperature water is connected to the high temperature water side pipeline 20.
A low temperature side flow rate control valve 200 that controls the flow rate of the low temperature water is connected to the low temperature water side pipeline 30.

The high temperature side flow control valve 100 includes a casing 110 having an upper opening 112, and the upper opening 11
A cover 120 for screw-sealing the valve 2, a valve flow passage 130 formed in the casing 110, and a flow passage of the valve flow passage 130 are balanced between the spring force of the temperature sensing spring 170 and the bias spring 180 and the hydraulic pressure. The valve body 160 that opens and closes with is the main configuration.

The structure of the high temperature side flow control valve 100 will be described in more detail. The valve flow path 130 formed in the casing 110 has a primary flow path 140 having an inflow port 142.
And a flow path opening 118 that is formed between the primary flow path 140 and the secondary flow path 150 and is an opening of the valve seat portion 116. When the valve body 160 is seated on or away from the valve seat portion 116, the flow path opening 118 is opened and closed.

The valve body 160 has a base portion 162, and a disc-shaped seating portion 164 formed on the outer periphery of the base portion 162.
Spring receiving annular step portion 16 protruding from the lower portion of the base portion 162
6 and a spring support protrusion 1 that is protruded from the upper portion of the base 162.
68, and these are integrally formed. The valve body 160 is supported by a bias spring 180 that is installed between the spring receiving annular step 166 and the lower step 114 of the casing 110, and at the same time, the spring support projection 1 is provided.
It is supported by a temperature-sensitive spring 170 that is installed between 68 and the upper step 122 of the lid 120.

The temperature sensitive spring 170 is made of a metal whose spring constant changes according to temperature, and the bias spring 180 is made of a normal spring material having a constant spring constant with respect to temperature. An alloy belonging to the category of shape memory alloy (SMA) made of nickel-titanium alloy is known as a metal material whose spring constant changes according to temperature. The elastic coefficient of this type of SMA changes depending on temperature, and as a result, the temperature sensitive spring 1 made of SMA is used.
The spring constant of 70 changes with temperature.

Here, when the load of the temperature sensitive spring 170 is used by being distorted by the spring force of the bias spring 180, there is a relation of strain and load with respect to each temperature shown in FIG. In FIG. 2, the vertical axis represents the load and the horizontal axis represents the strain, the solid line represents the load characteristics with respect to each temperature of the temperature-sensitive spring 170, and the alternate long and short dash line represents the load by the bias spring 180. As can be seen from FIG. 2, in the temperature-sensitive spring 170, the load characteristics with respect to each temperature change according to the strain, and the load characteristics of the bias spring 180 are balanced with each other.

That is, the load on the bias spring 180 changes in accordance with the change in the spring constant of the temperature sensitive spring 170 according to the high temperature water flowing through the valve flow path 130, and the valve body 160 reaches a position where it balances with the bias spring 180. Stroke ST
(See FIG. 2), the high temperature side flow control valve 10 is moved.
A flow rate of 0 will be adjusted. Here, when the temperature of the high temperature water rises, the load of the temperature sensitive spring 170 increases,
In the direction of increasing the load of the bias spring 180, the valve body 16
0 moves. As a result, the valve body 160 moves the valve seat portion 116.
The flow rate will decrease because it will move in the closing direction. On the other hand, when the temperature of the high-temperature water decreases, the operation opposite to that when the temperature rises is performed, and the valve body 160 moves in the opening direction on the contrary, so that the flow rate increases.

A flow stop valve 190 is integrally fixed to the lid 120, and an adjusting protrusion 192 extends from the lower end of the handle 120 toward the valve passage 130.
The tip of the adjusting protrusion 192 is inserted into a recess 169 formed in the spring supporting protrusion 168 of the valve body 160. Therefore, when the water flow stop handle 190 is rotated, it moves back and forth together with the lid 120 and changes the preload of 180 via the temperature-sensitive spring 170 and the valve body 160, so that the opening area of the flow passage opening 118 by the valve body 160 is changed. Changes and the flow rate of high-temperature water increases or decreases, and when the tip of the adjusting projection 192 abuts the bottom surface of the recess 169 and is further pushed, the valve body 160 closes in conjunction with the rotation of the water flow stop handle 190. To stop the water when seated on the valve seat portion 116.

On the other hand, the low temperature side flow rate control valve 200 has substantially the same structure as the high temperature side flow rate control valve 100, but the valve body 26
The temperature sensitive spring 270 for moving 0 and the bias spring 280 are arranged upside down. With such a configuration of the low temperature side flow control valve 200, the load on the bias spring 280 is changed by the low temperature water flowing through the valve flow path 230 according to the change of the spring constant of the temperature sensitive spring 270, and the valve body 260 is in a position where it is balanced with the bias spring 280. And the flow rate of the low temperature side flow rate control valve 200 is adjusted. Here, when the temperature of the low temperature water rises, the load of the temperature sensitive spring 270 increases, and the valve body 260 moves in the direction of increasing the load of the bias spring 180. Thereby, the valve body 260
Moves in the opening direction with respect to the valve seat portion 216, so that the flow rate increases. On the other hand, when the temperature of the low-temperature water decreases, the operation opposite to the case of the temperature increase is performed, and the valve body 26
Since 0 moves in the closing direction, the flow rate decreases. In addition,
The adjustment of the preload and the adjustment of the set temperature by the rotation of the water flow stop handle 290 are the same as those of the high temperature side flow control valve 100, and the same operations are performed.

Next, the temperature adjusting operation of the hot and cold water mixing apparatus 10 will be described. Now, when the conditions such as the hot water supply temperature from the water heater, the tap water temperature or the flow rate are in a steady state and the target temperature is set from the mixing pipeline 40 of the hot water mixing device 10, the temperature sensing of the high temperature side flow control valve 100 is performed. The spring 170 and the bias spring 180 are in balance with each other, and the temperature-sensitive spring 270 and the bias spring 280 of the low temperature side flow control valve 200 are in balance with each other.

Here, the temperature of the high temperature water flowing into the high temperature side flow control valve 100 is TH, the flow rate thereof is QH, the temperature of the low temperature water flowing into the low temperature side flow control valve 200 is TC, and the flow rate thereof is QC, Assuming that the temperature of the mixed hot water flowing out from the mixing pipe 40 is TM and the flow rate thereof is QM, the mixing temperature TM is
It is expressed by the following equation (1) based on the relationship of the amount of heat. TM = (TH * QH + TC * QC) / (QH + QC) (1) This equation (1) is transformed into the following equation (2). QH (TH-TM) = QC (TM-TC) (2)

As is clear from the above equation (2), when the temperature TC and the flow rate QC of the low temperature water on the right side are constant, the temperature TM of the mixed hot water is constant when the temperature TH of the high temperature water on the left side fluctuates. To achieve this, the flow rate QH of the high temperature water decreases as the temperature of the high temperature water increases, and the flow rate QH of the high temperature water increases as the temperature TH of the high temperature water decreases.

Similarly, when the temperature TH and the flow rate QH of the high temperature water on the left side of the equation (2) are constant,
To keep the temperature TM of the mixed hot water constant when the temperature TC of the low temperature water on the right side fluctuates, an increase in the temperature TC of the low temperature water increases the flow rate QC of the low temperature water, and a decrease in the temperature TC of the low temperature water. The flow rate QC of the low temperature water should be reduced.

In the hot and cold water mixing apparatus 10 based on such a principle, the temperature sensitive spring 170 of the high temperature side flow control valve 100 receives a temperature change of the high temperature water and changes its load, so that the temperature rise of the high temperature water can be prevented. To decrease the flow rate and increase the flow rate in response to the decrease in the temperature of the high temperature water, and the temperature sensitive spring 270 of the low temperature side flow control valve 200 changes its load in response to the temperature change of the low temperature water. By
It acts to increase the flow rate when the temperature of the low-temperature water rises and to decrease the flow rate when the temperature of the high-temperature water decreases. Therefore, the hot and cold water mixing apparatus 10 can maintain the temperature of the mixed hot water constant by the flow rate control of the high temperature side flow rate control valve 100 and the low temperature side flow rate control valve even if the temperature of the high temperature water or the low temperature water changes. it can.

Further, the temperature control of the mixed hot water of the hot water mixing apparatus 10 is performed by the valve bodies 160 and 2 of the high temperature side flow rate control valve 100 and the low temperature side flow rate control valve 200, which are separately formed.
60, and as described in the prior art, 1
Since the flow rates of the hot water and the water are not changed by the movement of the two movable valve bodies, there is no abrupt change in the mixing ratio of the hot water and the water due to the inclination of the valve body, and stable temperature control can be performed.

Next, a hot and cold water mixing apparatus 10 according to another embodiment.
B will be described with reference to FIG. Main hot water mixing device 10
B has a pressure adjusting function in addition to adjusting the temperature of the mixed hot water.

In FIG. 3, the hot and cold water mixing apparatus 10B accommodates a hot water side pressure regulating valve 300 and a water side pressure regulating valve 400 in a casing 310, and the hot water side pressure regulating valve 300 extends from the hot water side primary side passage 340 to the hot side. The high temperature water flowing out to the secondary side flow path 350 and the low temperature water flowing out from the water side primary side flow path 440 of the water side pressure regulating valve 400 to the water side secondary side flow path 450 are mixed together with a mixing passage 314.
The mixed hot water is discharged from the discharge port 315.

The hot water pressure regulating valve 300 has a casing 31.
0, the valve flow path 330 is provided from the hot water side primary flow path 340 to the hot water side secondary flow path through the flow path opening 318 provided in the valve seat portion 316. It is connected to 350. The flow path opening 318 is opened and closed by the valve body 360. The valve body 360 includes a base portion 362 that divides the valve chamber 332, a rubber seating member 364 attached to the base portion 362, and a connecting rod 365 fixed to the base portion 362.
An upper support portion 366 formed on the upper end of the connecting rod 365 is provided, and the upper support portion 366 fixes the diaphragm 367 together with the pressing member 368. This valve body 360
The peripheral portion of the base 362 is biased by a temperature sensitive spring 370, and the upper support 366 is biased by a normal spring 380 via a pressing member 368.

The temperature sensitive spring 370 is a spring made of a shape memory alloy, and as shown in the relationship between temperature and load characteristics in FIG. 4, the load increases as the temperature rises in the range of 60 ° C to 80 ° C. It has the property of decreasing.

On the other hand, the water side pressure regulating valve 400 is provided with a temperature sensitive spring 47.
The configuration is almost the same as that of the hot water pressure regulating valve 300 except that the load characteristics are different from 0. That is, the valve element 460 includes the spring 480.
The balance between the biasing force of the temperature-sensitive spring 470 and the hydraulic pressure of the valve chamber 332 causes the valve seat portion 416 to be seated on or separated from the valve seat portion 416 to change the opening area of the flow path opening 418.

Further, the temperature sensitive spring 470 has a characteristic that the load increases as the temperature rises in the temperature range of 10 ° C. to 30 ° C., as shown in FIG.

Next, the operation of the hot water mixing apparatus 10B will be described. In the hot and cold water mixing apparatus 10B, since the hot water side pressure regulating valve 300 and the water side pressure regulating valve 400 operate in substantially the same manner, the operation of the hot water side pressure regulating valve 300 will be described in detail, and the water side pressure regulating valve 400 will be simple. Explained.

Now, as shown in FIG. 3, the hot water pressure regulating valve 30
When the valve body 360 of 0 is open, the valve body 360
Is the seating member 3 of the valve body 360 from the hot water side primary side flow path 340.
The combined force of the hydraulic pressure to 64 and the urging forces of the spring 380 and the temperature sensitive spring 370 is received in the valve opening direction, while the upper support portion 3
The combined force of the force applied to 66 and the hydraulic pressure on the secondary side of the valve chamber 332 is received in the valve opening direction, and the force is balanced to open and close. However, since the force applied to the seating member 364 and the like and the force applied to the upper support portion 366 and the like cancel each other out almost equally, the valve body 360 causes the fluid pressure of the valve chamber 332 and the force of the spring 380 and the temperature sensitive spring 370 to be the same. It will be opened and closed according to the balance.

Therefore, when the hydraulic pressure in the hot water side primary flow path 340 increases, the hydraulic pressure in the valve chamber 332 also increases, so that the valve element 360 moves in the closing direction against the spring 380 and the temperature sensitive spring 370. By moving, the opening degree of the flow path opening 318 is reduced to reduce the secondary side hydraulic pressure. On the contrary, the valve body 360 is
When the hydraulic pressure in the hot water primary side flow passage 340 decreases, it moves in the opening direction due to the decrease in the hydraulic pressure in the valve chamber 332, increasing the opening degree of the flow passage opening 318 and increasing the secondary side hydraulic pressure. .
In this way, the hot water pressure adjusting valve 300 adjusts the pressure so that the mixed hot water is discharged at the pressure set by the spring 380 and the temperature sensitive spring 370.

Now, when the temperature of the high temperature water from the hot water primary side passage 340 rises, the load of the spring 380 is almost constant without depending on the temperature, but the temperature sensitive spring 370 has a spring constant of It becomes smaller and the load applied to the valve body 360 decreases. Therefore, the valve element 360 moves in the closing direction, and the flow rate of the high temperature water decreases. On the contrary, when the temperature of the high-temperature water decreases, the load of the temperature-sensitive spring 370 increases and the valve body 360
Is moved in the valve opening direction to increase the flow rate of high-temperature water.

On the other hand, in the water side pressure regulating valve 400, like the hot water side pressure regulating valve 300, the opening degree of the valve element 460 is changed in response to the fluctuation of the hydraulic pressure from the water side primary side flow passage 440 to set the spring 480. Performs pressure adjustment according to the pressure. In addition, the temperature sensitive spring 470
Reduces its load as the temperature of the low temperature water decreases, so that the flow rate of the low temperature water decreases, while increasing its load as the temperature of the low temperature water increases, the flow rate of low temperature water increases.

Therefore, the hot water mixing apparatus 10B using the hot water pressure adjusting valve 300 and the water pressure adjusting valve 400 can adjust the discharge temperature of the mixed hot water similar to that shown in FIG.

Further, in the hot and cold water mixing apparatus 10B, in addition to the adjustment of the discharge water temperature, the pressure adjusting operation can be performed, and in the hot water side pressure regulating valve 300, the valve body 360 has both the spring 380 and the temperature sensitive spring 370. The position is determined by the spring force,
Only one valve is required. The same applies to the water-side pressure regulating valve 400. Therefore, it is not necessary to separately provide a pressure regulating valve, and there is an effect that the configuration is simplified.

In the above embodiment, the high temperature side flow rate control valve and the low temperature side flow rate control valve are configured to discharge water at the target temperature by using the temperature sensitive spring made of a shape memory alloy. Any means capable of adjusting the opening degree of the valve body by means of a so-called wax thermo may be used.

[0045]

As described above, according to the hot and cold water mixing apparatus of the present invention, the temperature sensitive spring of the high temperature side flow rate control valve receives the temperature change of the high temperature water and changes its load, so that the temperature of the high temperature water rises. To reduce the flow rate and to increase the flow rate with a decrease in the temperature of the high temperature water, and the temperature sensitive spring of the low temperature side flow control valve changes the load due to the temperature variation of the low temperature water,
It acts to increase the flow rate when the temperature of the low-temperature water rises and to decrease the flow rate when the temperature of the high-temperature water decreases. Therefore, the temperature control of the hot and cold mixed water of the hot and cold water mixing apparatus is performed by the high temperature side flow rate control valve and the low temperature side flow rate control valve which are separately formed, and as described in the related art, movement of one movable valve body is performed. Since it does not change the flow rate of hot water and water, there is no sudden change in the mixing ratio of hot water and water due to the inclination of the valve body,
Stable temperature control can be performed.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a hot and cold water mixing apparatus according to an embodiment of the present invention.

FIG. 2 is a graph showing the relationship between the strain of the temperature-sensitive spring and the load.

FIG. 3 is a schematic cross-sectional view showing a hot and cold water mixing device according to another embodiment.

FIG. 4 is a graph showing the relationship between the temperature and the load of the temperature sensitive spring of the hot water pressure regulating valve.

FIG. 5 is a graph showing the relationship between the temperature and the load of the temperature sensitive spring of the water pressure regulating valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Hot water mixing apparatus 10B ... Hot water mixing apparatus 20 ... High temperature water side pipeline 30 ... Low temperature water side pipeline 40 ... Mixing pipeline 100 ... High temperature side flow control valve 110 ... Casing 112 ... Upper opening 114 ... Lower step 116 ... Valve seat part 118 ... Flow path opening 120 ... Lid body 122 ... Upper step part 130 ... Valve flow path 140 ... Primary side flow path 142 ... Inflow port 150 ... Secondary side flow path 152 ... Outflow port 160 ... Valve body 162 ... Base portion 164 ... Seating portion 166 ... Spring receiving annular step portion 168 ... Spring supporting protrusion 169 ... Recess 170 ... Temperature sensitive spring 180 ... Bias spring 190 ... Flow stop handle 192 ... Adjusting protrusion 200 ... Low temperature side flow adjusting valve 216 ... Valve seat 230 ... Valve flow path 260 ... Valve body 270 ... Temperature sensitive spring 280 ... Bias spring 290 ... Water flow stop handle 300 ... Hot water pressure regulating valve 310 ... Casing 314 ... Mixing passage Channel 315 ... Discharge port 316 ... Valve seat 318 ... Channel opening 330 ... Valve channel 332 ... Valve chamber 340 ... Hot side primary side channel 350 ... Hot side secondary side channel 360 ... Valve body 362 ... Base 364 ... Seating member 365 ... Connecting rod 366 ... Upper support part 367 ... Diaphragm 368 ... Holding member 370 ... Temperature sensitive spring 380 ... Spring 400 ... Water side pressure regulating valve 418 ... Flow passage opening 440 ... Water side primary side flow passage 450 ... Water side two Secondary flow path 460 ... Valve body 470 ... Temperature sensitive spring 480 ... Spring

Claims (2)

[Claims] 1. A high temperature side flow rate control valve having a valve flow path connected to a high temperature side flow path for passing high temperature water, and a low temperature side flow rate control having a valve flow path connected to a low temperature side flow path for passing low temperature water. Valve and
A hot water mixing device for mixing hot water flowing out of the high temperature side flow control valve and low temperature water flowing out of the low temperature side flow control valve to spout mixed hot and cold water at a target temperature, Is a high-temperature side valve body provided to open and close the valve flow path, and a constant amount of heat expressed by the product of the deviation of the temperature of the high-temperature water exposed to the high-temperature water from the target temperature and the flow rate of the high-temperature water. A first temperature-sensitive urging unit that urges the high-temperature side valve element to adjust the opening degree of the low-temperature side flow rate control valve. Adjust the opening degree of the low temperature side valve body so that the heat quantity represented by the product of the deviation between the target temperature and the temperature of the low temperature water and the flow rate of the low temperature water exposed to the low temperature water and the side valve body approaches a constant value. A hot / cold water mixing device comprising: a second temperature-sensing means for urging. 2. The hot and cold water mixing apparatus according to claim 1, wherein the first temperature-sensitive urging means and / or the second temperature-sensitive urging means has a spring constant that changes in accordance with temperature within a predetermined temperature range. A hot and cold water mixing device that is a spring made of material.