JPH08285128A - Mixing temperature control device - Google Patents

Abstract

PURPOSE: To provide a compact and inexpensive mixing temperature control device which can realize two functions of a mixing temperature automatic adjusting function and an integrated flow rate adjusting function of fluid by a single valve body. CONSTITUTION: A movable valve body 76 is energized from both sides by a temperature sensing element spring 81 and a bias spring 79, and the device is constituted by arranging a valve seat position adjusting means 86 to vary at least one position of a high temperature fluid side valve seat 77 and a low temperature fluid side valve seat 78 opposed to both sides of its movable valve body 76, and automatic mixing temperature control and a mixed fluid flow rate adjustment can be performed by a single valve body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixing temperature control device for controlling the temperature of a mixed fluid by adjusting the mixing ratio of a high temperature fluid and a low temperature fluid.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional mixing temperature control device of this type (for example, Japanese Patent Laid-Open No. 6-159532). In the figure, the housing 12 of the hot and cold water mixing device 10 is substantially cylindrically shaped, the outlet fitting 16 that is liquid-tightly fastened to the main body 14 by screwing or the like, and similarly is liquid-tightly fastened to the main body 114. It is composed of a cap 18.

The housing 12 has inlets 20 and 22 formed therein, the inlet 20 acting as a hot water inlet,
2 acts as a water inlet. A central bore 24 is formed in the housing 12, and a pressure receiving piston 26 is slidably fitted in the bore 24. Inside the housing 12, a hot water side primary pressure chamber 28 is provided by the pressure receiving piston 26.
And a water-side primary pressure chamber 30. Hot water inlet 2
0 and 22 are in communication with the primary pressure chambers 28 and 30, respectively, so that the hot and cold water having the primary pressure can flow into the primary pressure chamber 28.
And 30, respectively.

The pressure receiving piston 26 is fitted in the bore 24 with a predetermined radial clearance and slides in the bore 24. Hot water side primary pressure chamber 28 and water side primary pressure chamber 30
Is connected to the hot water valve chamber 36 via the valve seats 32 and 34, respectively.
And communicates with the water side valve chamber 38. The hot water valve seat 32 and the hot water valve chamber 34 are coaxially aligned with each other and are arranged symmetrically to each other. The water side valve chamber 38 is in communication with the hot water side valve chamber 36 through a plurality of openings 40 formed in the cap 18 and a passage 42 formed in the main body 14, and the water passing through the water side valve seat 34 is It flows into the hot water valve chamber 36. Therefore, the hot water valve chamber 36 acts as a hot water mixing chamber, and the hot water mixture formed in the hot water mixing chamber 36 is discharged from the mixture outlet 44 of the outlet fitting 16.

Inside the housing 12, a movable valve body unit 46 is movable in the axial direction. This valve body unit 4
6 has a valve shaft 48 and a hot water valve body 50 and a water valve body 52 fixed to both ends of the valve shaft 48 by nuts. The valve shaft 48 is formed integrally with the pressure receiving piston 26, and the movable valve body unit 46 and the pressure receiving piston 26 work together. The hot water valve body 50 and the hot water valve body 52 are coaxially aligned, and the hot water flow is controlled in cooperation with the hot water valve seat 32 and the hot water valve seat 34, respectively. The effective pressure receiving areas of the pressure receiving piston 26, the hot water valve body 50, and the hot water valve body 52 are equal to each other, and the primary pressure in the hot water side primary pressure chamber 28 acts on the hot water valve body 50 in the valve opening direction. , Pressure receiving piston 26
Acts in the opposite direction.

Since the effective pressure receiving area of the pressure receiving piston 26 and the effective pressure receiving area of the hot water valve body 50 are equal, the force acting on the hot water valve body 50 by the primary pressure in the hot water primary pressure chamber 28 depends on the primary pressure. The force acting on the pressure receiving piston 26 is offset. Similarly, the force acting on the water side valve element 52 by the primary pressure in the water side primary pressure chamber 30 and the force acting on the pressure receiving piston 26 by the primary pressure cancel each other out.
Therefore, the eccentric force resulting from the primary pressure of the hot and cold water does not act on the movable valve body unit 46.

Further, since the hot and cold water mixing chamber 36 and the water side valve body 38 are in communication with each other and the secondary pressures in both are equal,
The eccentric force resulting from the secondary pressure does not act on the movable valve body unit 46. Therefore, the movable valve body unit 46
Is unaffected by transient fluctuations in hot and cold water pressure,
Positioning is performed by the balance of two kinds of mechanical biasing forces acting in directions opposite to each other. That is, the coil springs 54 and 56 are arranged in a compressed state in the hot water mixing chamber 36 and the water side valve chamber 38, respectively.

One of the coil springs 54, which functions as a temperature sensitive element, is formed of a nickel-titanium type shape memory alloy having a characteristic that the spring constant changes with temperature. The shape memory alloy temperature-sensitive coil spring 54 generates a spring force that linearly changes according to the temperature of the hot and cold mixture in the mixing chamber 36, and causes the movable valve body unit 46 to act on the spring force. The elastic coefficient of the shape memory alloy forming the temperature-sensitive coil spring 54 changes according to temperature, and as a result, the spring constant of the coil spring 54, and thus the spring force, changes according to temperature. One end of the temperature-sensitive coil spring 54 made of shape memory alloy is supported by the hot water valve body 50, and the other end is supported by the outlet fitting 16. Therefore, the shape memory alloy temperature-sensitive coil spring 54 urges the movable valve body unit to the left and right.

The other coil spring 56, which acts as a bias spring, is made of an ordinary spring material, and its spring constant is substantially constant with respect to temperature. Therefore, the biasing force generated by the bias spring 56 is proportional to the preload applied to it. One end of the bias spring 56 is supported by the water side valve body 52, and the other end thereof is supported by a movable spring receiver 58 slidably mounted on the cap 18. An adjusting screw 60 screwed to the cap 18 is engaged with the movable spring receiver 58, and a preload of the bias spring 56 can be adjusted by rotating a handle 62 of the adjusting screw. The bias spring 56 biases the movable valve body unit 46 to the left and right.

That is, in Japanese Patent Laid-Open No. 6-159532, which is a conventional hot and cold water mixing apparatus, the temperature sensing element 54 has a shape having a characteristic region in which the spring constant changes linearly in accordance with the temperature change. It is formed of a memory alloy, and in the linear characteristic region thereof, the urging force of the shape memory alloy coil spring 54 and the urging force of the bias spring 56 are balanced to actuate the movable valve body 46 to cause overshoot or undershoot. There has been proposed a hot and cold water mixing device capable of finely adjusting the temperature without causing the above.

[0011]

However, although the conventional mixing temperature control device as described above can adjust the mixing temperature of the hot and cold water, a separate flow rate adjusting valve is required to control the total flow rate of the mixed water. However, there was a problem in terms of size and cost.

The present invention solves the above-mentioned problems.
A first object of the present invention is to provide a compact and inexpensive mixing temperature control device which can realize two functions of a fluid mixing temperature automatic adjusting function and a total flow rate adjusting function with one valve body.

A second object is to have a function for automatically adjusting the mixing temperature of fluids and a total flow rate control function with one valve body,
It is an object of the present invention to provide a mixing temperature control device that ensures durability against repeated bending of a temperature sensitive body spring.

A third object is to have a function of automatically adjusting the mixing temperature of fluids and a total flow rate with a single valve body.
It is an object of the present invention to provide a mixed temperature control device that ensures durability against repeated flexure and has a small hysteresis in the operating temperature and storage temperature range of the temperature sensitive body spring.

A fourth object is to have a function for automatically adjusting the mixing temperature of fluids and a total flow rate adjusting function with one valve body,
An object of the present invention is to provide a mixing temperature control device having an excellent temperature control function that does not cause a temperature shift due to fluid pressure fluctuations or flow rate changes.

A fifth object is to have a function of automatically adjusting the mixing temperature of the fluid and a function of adjusting the total flow rate with a single valve body, and having an excellent temperature control function that does not cause temperature deviation due to fluctuations in water pressure or change in set temperature. Another object of the present invention is to provide a mixed temperature control device that can be manually used even during a power failure or a failure of an electronic control means or the like.

A sixth object is to have a function of automatically adjusting the mixing temperature of fluids and a total flow rate adjusting function with one valve body, which can be used in a humid place, and can be manually operated even in the case of power failure or failure of electronic control means. It is to provide a mixing temperature control device that can be used in.

[0018]

In order to achieve the above first object, a mixing temperature control device of the present invention comprises a movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, and the movable valve body, respectively. A high temperature fluid side valve seat and a low temperature fluid side valve seat provided opposite to each other, a temperature sensing body spring for urging the movable valve body in a direction to reduce the proportion of the high temperature fluid with the temperature rise of the mixed fluid, A bias spring for urging the movable valve body in the opposite direction, an urging force adjusting means for adjusting the mixing temperature by changing the urging force of at least one of the two springs, and a valve seat position of at least one of the two valve seats. Is provided to adjust the flow rate of the fluid by changing the valve position.

In order to achieve the above-mentioned second object, the mixing temperature control device of the present invention comprises a movable valve body for adjusting the mixing ratio of a high temperature fluid and a low temperature fluid, and a high temperature provided opposite to the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensing body spring made of a shape memory alloy for urging the movable valve body in a direction to decrease the proportion of the high-temperature fluid as the temperature of the mixed fluid increases, and the movable body A bias spring for urging the valve element in the opposite direction, an urging force adjusting means for adjusting the mixing temperature by changing the urging force of at least one of the two springs, and a shear for restricting the shear strain γ of the temperature sensor spring. Strain regulating means and valve seat position adjusting means for adjusting the flow rate of the fluid by changing the valve seat position of at least one of the two valve seats are provided.

In order to achieve the above-mentioned third object, the mixing temperature control device of the present invention comprises a movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, and a high temperature provided opposite to the movable valve body. It consists of a fluid-side valve seat and a low-temperature fluid-side valve seat, and a shape memory alloy that undergoes a phase transformation of an R (Rhombohedral) phase or mother phase in the storage and operating temperature range. A temperature sensitive body spring for urging the movable valve element in a decreasing direction, a bias spring for urging the movable valve element in the opposite direction, and an urging force of at least one of the two springs are varied to adjust the mixing temperature. And a valve seat position adjusting means for adjusting the flow rate of the fluid by changing the valve seat position of at least one of the two valve seats.

In order to achieve the above-mentioned fourth object, the mixing temperature control device of the present invention comprises a movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, and a high temperature provided opposite to the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensitive body spring for urging the movable valve body in a direction in which the proportion of the high-temperature fluid decreases as the temperature of the mixed fluid rises, and the movable valve body in opposite directions. A bias spring that biases the two springs, an electric biasing force adjusting unit that changes the biasing force of at least one of the two springs to adjust the mixing temperature, and a valve seat position of at least one of the two valve seats that varies. Valve seat position adjusting means for adjusting the flow rate of fluid, temperature detecting means for detecting the temperature of the mixed fluid, temperature setting means for setting a target value of the mixed fluid temperature, and temperature detected by the temperature detecting means By the temperature setting means Is provided with a electronic control means for controlling said electrical biasing force adjusting means on the basis of a constant target value.

In order to achieve the fifth object, the mixing temperature control device of the present invention comprises a movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, and a high temperature valve provided so as to face the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensitive body spring for urging the movable valve body in a direction in which the proportion of the high-temperature fluid decreases as the temperature of the mixed fluid rises, and the movable valve body in opposite directions. Bias spring for urging the valve, an electric urging force adjusting means having a manual driving unit for adjusting the mixing temperature by changing the urging force of at least one of the two springs, and at least one valve of the two valve seats. Valve seat position adjusting means for changing the seat position to adjust the flow rate of the fluid, temperature detecting means for detecting the temperature of the mixed fluid, temperature setting means for setting a target value of the mixed fluid temperature, and the temperature detecting means. And the temperature detected by Is provided with a electronic control means for controlling said electrical biasing force adjusting means based on the set target value by degrees setting means.

In order to achieve the sixth object, the mixing temperature control device of the present invention comprises a movable valve body for adjusting the mixing ratio of a high temperature fluid and a low temperature fluid, and a high temperature valve provided opposite to the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensitive body spring for urging the movable valve body in a direction in which the proportion of the high-temperature fluid decreases as the temperature of the mixed fluid rises, and the movable valve body in opposite directions. Bias spring for urging the valve, an electric urging force adjusting means having a manual driving unit for adjusting the mixing temperature by changing the urging force of at least one of the two springs, and at least one valve of the two valve seats. Valve seat position adjusting means for changing the seat position to adjust the flow rate of the fluid, temperature detecting means for detecting the temperature of the mixed fluid, temperature setting means for setting a target value of the mixed fluid temperature, and the temperature detecting means. And the temperature detected by Electronic control means for controlling the electric urging force adjusting means based on the target value set by the degree setting means, and the electric urging force adjusting means covers the motor with a resin which also serves as the manual drive section. The present invention is provided with a dampproofing means, and a manual / electrical dual-purpose driving means for varying the spring biasing force of the movable valve body by either electrically driving the motor or manually driving the manual driving portion. .

[0024]

With the above-described structure, the mixing temperature control device of the present invention has the biasing force of the temperature sensitive body spring and the biasing direction of the temperature sensitive body spring on the movable valve body for adjusting the mixing ratio of the high temperature fluid and the low temperature fluid. Biasing forces acting in opposite directions act on the movable valve element by bias springs respectively, and the movable valve element is positioned at a position where the biasing forces of the two springs are balanced, and the inflowing high temperature fluid and low temperature fluid are moved by the movable element. It becomes a mixed fluid having a mixing ratio according to the opening position of the valve element, passes through the periphery of the temperature sensing spring, and flows out. At this time, the temperature of the mixed fluid is mechanically fed back by the temperature sensing spring. Meanwhile, the temperature is automatically adjusted by the balance of the two springs. Therefore, the target mixing temperature is set by the urging force adjusting means for adjusting the urging force of at least one of the two springs.

By changing the valve seat position by the valve seat position adjusting means, the distance between the movable valve body and the valve seat can be changed, and the flow rate of the mixed fluid can be adjusted from fully open to fully closed. At this time as well, the temperature of the mixed fluid acts so that the movable valve element operates due to the balance between the temperature sensitive body spring and the bias spring, and is automatically maintained at the target temperature set by the biasing force adjusting means.

Further, the mixed temperature control device of the present invention has one movable valve body and a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, a temperature sensitive body spring, a biasing force adjusting means, a valve seat with the above-mentioned constitution. The position adjusting means acts so that the temperature of the mixed fluid can be set, and the temperature and the flow rate of the mixed fluid can be automatically adjusted, and the shear strain regulating means for regulating the shear strain γ of the temperature sensitive spring is used to form the temperature sensitive spring made of a shape memory alloy. Causes repeated bending within a range in which the shear strain γ does not exceed a predetermined amount, and acts so as to control the temperature of the mixed fluid and adjust the flow rate without impairing the durability of the temperature sensitive body spring.

Further, the mixed temperature control device of the present invention has the above-mentioned structure, and one movable valve body, a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, and a spring constant which changes according to temperature, and can be stored and stored. A temperature sensitive spring made of a shape memory alloy that undergoes a phase transformation of R (Rhombohedral) phase or mother phase in the operating temperature range, temperature setting of the mixed fluid and automatic temperature control and flow rate control by biasing force adjusting means and valve seat position adjusting means. In addition to the above, the temperature-sensitive body spring acts so as to only undergo a phase transformation in which the R (Rhombohedral) phase and the mother phase are repeated in the storage / use temperature range. Therefore, in the operating temperature range and the storage temperature range of the temperature sensitive body spring, durability against repeated flexure is not impaired, and the temperature of the mixed fluid is controlled with small hysteresis and high responsiveness.

Further, the mixing temperature control device of the present invention has one movable valve element and a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, a temperature sensitive body spring, a biasing force adjusting means, a valve seat with the above-mentioned constitution. The position adjusting means acts so that the temperature of the mixed fluid can be set, the automatic temperature and the flow rate can be adjusted, and the high temperature fluid flowing through the gap between the movable valve element and the high temperature fluid side valve seat, the movable valve element and the low temperature fluid. The low-temperature fluid that flows in through the gap with the side valve seat is mixed, and the mixed fluid passes while contacting the temperature-sensitive body spring, and the mixed temperature is transferred to the temperature-sensitive spring by heat and mechanically feedback-controlled, and electronic The control means drives the electric urging force adjusting means on the basis of the mixed fluid temperature detected by the temperature detecting means and the target value set by the temperature setting means to electrically set the mixture temperature to the target value. Back control. Therefore, even if the temperature deviation is instantaneously caused by the hysteresis of the temperature sensing body spring, the fluid pressure fluctuation, and the flow rate change by the valve seat position adjusting means, the temperature is corrected by the electric feedback control.

As described above, the transient temperature fluctuation of the mixed fluid is quickly adapted by the mechanical feedback control while the mixed fluid is in contact with the temperature sensor spring made of the shape memory alloy, and the steady offset is Since it is detected by the mixing temperature detection means and electrically feedback-controlled, it has a function to automatically adjust the mixing temperature of the fluid and a total flow rate control function with one valve body, and it is excellent in that there is no temperature deviation due to fluid pressure fluctuations or flow rate changes. A mixed temperature control device having an excellent temperature control function can be obtained.

Further, the mixed temperature control device of the present invention has one movable valve body and a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, a temperature sensitive body spring, a biasing force adjusting means, a valve seat with the above-mentioned constitution. The position adjusting means acts so that the temperature of the mixed fluid can be set, the automatic temperature and the flow rate can be adjusted, and the high temperature fluid flowing through the gap between the movable valve element and the high temperature fluid side valve seat, the movable valve element and the low temperature fluid. The low-temperature fluid that flows in through the gap with the side valve seat is mixed, and the mixed fluid passes while contacting the temperature-sensitive body spring, and the mixed temperature is transferred to the temperature-sensitive spring by heat and mechanically feedback-controlled, and electronic The control means drives the electric urging force adjusting means on the basis of the mixed fluid temperature detected by the temperature detecting means and the target value set by the temperature setting means to electrically set the mixed fluid temperature to the target value. To Dobakku control. Therefore,
Even if a temperature deviation occurs instantaneously due to the hysteresis of the temperature sensor spring, the fluid pressure fluctuation, the flow rate change by the valve seat position adjusting means, etc., the temperature is corrected by the electric feedback control.

Further, the electric urging force adjusting means is provided with a manual driving part, and the set point of the mixing temperature can be changed by the manual driving part even in the case of a power failure or a failure of the electronic control means, and the automatic mixing temperature adjusting function is provided. And can be used without losing the total flow rate control function.

Further, the mixing temperature control device of the present invention has one movable valve body and a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, a temperature sensitive body spring, a biasing force adjusting means, a valve seat with the above-mentioned constitution. The position adjusting means acts so that the temperature of the mixed fluid can be set and the temperature and the flow rate of the mixed fluid can be automatically adjusted, and the high temperature fluid flowing through the gap between the movable valve body and the high temperature fluid side valve seat, and the movable valve body and the low temperature side The low temperature fluid that flows in through the gap with the valve seat is mixed, and the mixed fluid passes while contacting the temperature sensing spring, the mixed temperature is transferred to the temperature sensing spring, and is mechanically feedback controlled and electronically controlled. The means drives the electric biasing force adjusting means on the basis of the mixed fluid temperature detected by the temperature detecting means and the target value set by the temperature setting means to electrically feed the mixture temperature to the target value. To click control. Therefore, even if the temperature deviation is instantaneously caused by the hysteresis of the temperature sensing body spring, the fluid pressure fluctuation, and the flow rate change by the valve seat position adjusting means, the temperature is corrected by the electric feedback control.

Further, the electric urging force adjusting means is provided with a moisture-proof means in which the motor is covered with a resin which also serves as the manual drive section,
In a configuration including a manual / electrical dual-purpose drive unit that varies the spring biasing force of the movable valve body by either electrically driving the motor or manually driving the manual drive unit,
The set point of the mixing temperature can be changed by the manual drive unit even when there is a power outage or a failure of the electronic control means, and it can be used without losing the automatic mixing temperature adjustment function and the total flow rate adjustment function.
It can be used in humid places.

[0034]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the first embodiment of the present invention. In FIG. 1, 70 is a high temperature fluid supply pipe for supplying a high temperature fluid such as hot water, and the high temperature fluid supply pipe 70 communicates with a mixing valve 71. Hot water and water are supplied to the mixing valve 71 from a high temperature fluid supply pipe 70 and a low temperature fluid supply pipe 72 such as water. The mixing valve 71 is supplied with hot and cold water from a high temperature fluid inlet 74 and a low temperature fluid inlet 75 provided in the housing 73, and the movable valve body 76 is moved so that a gap between the high temperature fluid side valve seat 77 and the low temperature fluid side valve seat 78 is provided. The distance changes inversely and the mixing ratio of hot and cold water is adjusted. The movable valve body 76 has a tubular shape in which hot water and water flow in from the surroundings, is biased in the right direction in FIG. 1 by a bias spring 79, and is movable in accordance with the temperature provided in the mixing flow passage 80. The temperature-sensitive body spring 81 whose spring constant changes is also urged in the leftward direction in FIG. Since the spring constant of the temperature-sensitive body spring 81 changes according to the temperature, the biasing force changes if the constraint length is the same, and the movable valve body 76 causes the bias spring 79 and the temperature-sensitive body spring 8 to move.
The urging force of 1 is pushed and moved to a position where it is balanced. Also,
The urging force adjusting means 82 for adjusting the urging force of the bias spring 79 and the urging force of the temperature sensing body spring 81 adjusts the urging force adjusting operation portion 83 to rotate the urging force adjusting male screw 84.
Is rotated and moved forward and backward, and the movable spring receiver 85 biased by the bias spring 79 and the temperature sensitive body spring 81 is moved forward and backward by the biasing force adjusting male screw 84. For example, in FIG. 1, when the biasing force adjusting means 82 is rotated in a direction in which the movable spring receiver 85 moves slightly to the right, the biasing spring 79 is compressed more and the biasing force of the biasing spring 79 becomes larger, so that the movable valve body 76 is moved. Also begins to move a little to the right. Then, the opening degree of the high temperature fluid inlet 74 becomes a little larger,
Along with this, the opening degree of the low temperature fluid inlet 75 becomes slightly smaller. Therefore, the temperature of the mixed fluid rises a little, the temperature of the temperature sensitive body spring 81 also rises at the same time, and the biasing force of the temperature sensitive body spring 81 also becomes a little larger. Then, when the biasing force of the temperature sensitive body spring 81 is balanced with the biasing force of the bias spring 79, the movable valve body 76 stops. In this way, the temperature of the mixed fluid can be set by the rotational position of the biasing force adjusting means 82, and the movable valve can be set by balancing the biasing forces of the bias spring 79 and the temperature sensitive body spring 81 so as to automatically maintain the set temperature. The configuration is such that the position of the body 76 is controlled.

Further, the high temperature fluid side valve seat 77 has a movable valve seat structure which can be moved back and forth by the valve seat position adjusting means 86. When the high temperature fluid side valve seat 77 is rotated by the valve seat position adjusting means 86 in FIG. The position adjusting male screw 87 moves back and forth, the distance between the movable valve body 76 and the valve seat 77 can be varied, and the flow rate of the mixed fluid can be adjusted. At this time as well, the temperature of the mixed fluid operates so that the movable valve body 76 operates due to the balance between the temperature sensitive body spring 81 and the bias spring 79, and is automatically maintained at the target temperature set by the biasing force adjusting means 82. . Further, when the valve seat 77 is moved to the position shown in FIG. 2 by the valve seat position adjusting means 86, the gap distance between the high temperature fluid side valve seat 77 and the movable valve body 76 and the low temperature fluid side valve seat 78 and the movable valve body 7 will be described.
Any of the gap distances with 6 can be zero, that is, can be closed. That is, the valve seat position adjusting means 86 can be operated to adjust the flow rate from fully open to fully closed. Reference numeral 88 is a housing cap provided with a biasing force adjusting female screw 89 and a valve seat position adjusting female screw 90. Reference numeral 91 is a mixed fluid outlet.

The operation of this embodiment having the above configuration will be described. When the valve seat position adjusting means 86 is operated and hot water is tapped as shown in FIG. 1 while the desired mixing temperature is set by the urging force adjusting operating portion 83 of the urging force adjusting means 82, the high temperature fluid supply pipe 70 and the low temperature fluid are supplied. Hot water and water are respectively supplied from the supply pipe 72 to the high temperature fluid port 74 and the low temperature fluid inlet 75 of the mixing valve 71 according to the distance between the movable valve body 76 and the high temperature fluid side valve seat 77 and the low temperature fluid side valve seat 78. Movable valve body 76
Flows inward from the surroundings, is mixed in the mixing channel 80, and the hot and cold mixture passes while contacting the temperature sensor spring 81.

At this time, the movable valve body 76 is positioned by a mechanical balance between the biasing force of the temperature sensitive body spring 81 corresponding to the temperature of the mixed fluid and the biasing force of the bias spring 79 corresponding to the set temperature. To be done. That is, when the actual temperature of the mixed fluid is lower than the biasing force of the bias spring 79 which is set to the desired temperature set by the biasing force adjusting means 82, the biasing force of the temperature sensitive body spring 81 is smaller and the high temperature fluid is higher. The gap between the side valve seat 77 and the movable valve body 76 is widened, and the gap between the low temperature fluid side valve seat 78 and the movable valve body 76 is narrowed to move the movable valve body 76.

On the contrary, when the actual temperature of the mixed fluid is higher than the biasing force of the bias spring 79 corresponding to the desired temperature set by the biasing force adjusting means 82, the temperature sensing spring 81 is used.
Is larger, the clearance distance between the high temperature fluid valve seat 77 and the movable valve body 76 is narrowed, and the clearance distance between the low temperature fluid valve seat 78 and the movable valve body 76 is expanded.
To move. In this way, the mechanical feedback control automatically functions and the movable valve body 76 operates so that the desired temperature set by the biasing force adjusting means 82 is always maintained by the action of the temperature sensing body spring 81. The temperature can be finely adjusted.

Reference numeral 92 denotes a ring-shaped sheet member provided between the bias spring 79 and the movable spring receiver 85, which can improve mutual slip and prevent the bias spring 79 from being unnaturally twisted. In addition, the ring-shaped sheet member 93 provided at the contact portion of the temperature-sensitive body spring 81 also has the temperature-sensitive body spring 81 similarly.
It is possible to prevent the unnecessary twisting action of, and to ensure good temperature control performance by mixing.

Further, when it is desired to change the total flow rate of the mixed fluid, when the valve seat position adjusting means 86 rotates the high temperature fluid side valve seat 77 in FIG. 1, the valve seat position adjusting male screw 87 advances and retreats to move the movable valve body 76 and the valve. The distance from the seat 77 can be changed, and the flow rate of the mixed fluid can be adjusted arbitrarily. Even when the flow rate is changed in this way, the movable fluid body 76 operates due to the balance between the temperature sensitive body spring 81 and the bias spring 79, and the mixed fluid temperature is automatically maintained at the target temperature set by the urging force adjusting means 82. Acts as if it were. Further, the valve seat position adjusting means 86 moves the valve seat 77 to the position shown in FIG.

That is, by operating the valve seat position adjusting means 86, the flow rate can be arbitrarily adjusted from fully open to fully closed, and the temperature of the mixed fluid is movable so as to be always maintained at the temperature set by the biasing force adjusting means 82. The valve body 76 operates.

As described above, according to this embodiment, one movable valve body 86 has two functions of the fluid mixing temperature automatic adjusting function and the total flow rate adjusting function, and realizes a compact and inexpensive mixing temperature control device. it can.

Next, a second embodiment of the present invention will be described with reference to FIGS. 1, 2 and 3. It should be noted that the description of the configuration and operation overlapping with the contents described in the first embodiment of the present invention will be omitted. 1 and 2
In the case where the movable valve body 76 moves to the side where the temperature sensor spring 81 is compressed,
The maximum strain amount of the temperature-sensitive body spring 81 at the time of maximum compression is regulated by the configuration in which the temperature-sensitive fluid side valve seat 78 is abutted, and the shear strain γ of the temperature-sensitive body spring 81 is regulated within a range not exceeding 1%. is there. The shear strain γ of the coil spring
Is the product of the wire diameter d of the coil spring and the deflection δ of the coil spring, and the effective winding number n of the coil spring and the average diameter D of the coil spring are 2
It is the product of power and π and is expressed as a percentage. In the formula, γ = (d × δ) ÷ (π × n × D ² ) × 100%
Becomes

FIG. 3 is a diagram showing the relationship between displacement and force of the temperature sensing body spring 81, the bias spring 79 and the movable valve body 76 in the configuration shown in FIG. The biasing force of the temperature sensitive body spring 81 changes according to each temperature and displacement as shown in the figure. The bias spring 79 linearly changes its biasing force according to the displacement regardless of the temperature. Bias spring 79
Since the displacement of the temperature sensing body spring 81 and the displacement of the temperature sensing body spring 81 are inversely proportional to the displacement movement of the valve body 76, each intersection of the temperature sensing body spring characteristic line and the bias spring characteristic line at each temperature in FIG. It is the operating point.

At the valve body position where the high temperature fluid is fully opened or the low temperature fluid is fully closed, the maximum temperature set point is the temperature sensing body spring 81.
Is the maximum point, the shear strain regulating means 94 is provided in this embodiment so that the shear strain γ is 1% or less at this position as shown in FIG. Therefore, the shear strain exceeding 1% does not act on the temperature sensitive body spring 81.

Therefore, in the mixing temperature control system of this embodiment, one movable valve body 76, a high temperature fluid side valve seat 77, a low temperature fluid side valve seat 78, a bias spring 79, a temperature sensitive body spring 81 and a biasing force adjusting means. 82, the temperature of the mixed fluid can be set by the valve seat position adjusting means 86, the automatic temperature adjustment and the flow rate adjustment can be performed, and the feeling of the shape memory alloy can be obtained by the shear strain restricting means 94 for restricting the shear strain γ of the temperature sensing spring 81. The thermal body spring 81 is repeatedly bent in the range where the shear strain γ is 1% or less, and
The temperature of the mixed fluid and the flow rate can be adjusted without impairing the durability of the.

Further, when a comparative test was carried out between the case where the shear strain γ was larger than 1% and the case where the shear strain γ was small, a clear difference was observed in the hysteresis as well, and not only the durability but also the initial temperature control performance was observed. It was possible to confirm the effect of the shear strain restricting means 94 for restricting the value to a predetermined amount or less.

As described above, according to this embodiment, the temperature-sensitive body spring 81 is repeatedly bent within the range where the shear strain γ does not exceed the predetermined amount, and the durability of the temperature-sensitive body spring 81 is not impaired. Thus, a mixed temperature control device can be obtained which has the function of automatically adjusting the mixing temperature of the fluid and the function of adjusting the total flow rate with one movable valve body 76, and which ensures the durability against repeated bending of the temperature sensing body spring 81.

The third embodiment of the present invention is based on a shape memory alloy that undergoes a phase transformation of an R (Rhombohedral) phase or a mother phase in a temperature range of -30 ° C to + 100 ° C, as shown by a region in Fig. 4. The temperature-sensing body spring 81 is attached to the mixing temperature control device shown in FIG. 1, and the spring constant of the movable valve body 76 that adjusts the mixing ratio of the high temperature fluid and the low temperature fluid changes according to the temperature,・ Operating temperature range (for example, -30 ℃ to +1)
The urging force of the temperature-sensitive body spring 81 made of a shape memory alloy that undergoes phase transformation of R (Rhombohedral) phase or mother phase at 00 ° C. and the urging force in the direction opposite to the urging direction of the temperature-sensitive body spring 81 The bias spring 79 acts on the movable valve body 76 to position the movable valve body 76 at a position where the biasing forces of the two springs 79 and 81 are balanced, and the high temperature fluid and the low temperature fluid flowing into the mixing valve 71 are movable. The mixed fluid having a mixing ratio corresponding to the opening position of the valve body 76 becomes the temperature sensing body spring 81.
Flows out around and out. The two springs 79, 81
Urging force adjusting means 8 for adjusting the urging force of at least one of the
2, the target mixing temperature is set.

Here, the temperature sensitive spring 81 is a coil spring of a shape memory alloy which is a nickel / titanium binary alloy or a nickel / titanium ternary alloy and is heat treated at a temperature of 400 to 500 ° C.
In the storage / use temperature range (−30 ° C. to + 100 ° C.), as shown in FIG. 4, only the phase transformation of the R (Rhombohedral) phase or the mother phase occurs.
The displacement area of 1 is restricted.

That is, the movable valve body 76 is bias spring 79.
When the temperature-sensitive body spring 81 is displaced to the most compression side when it is urged to contact the low temperature fluid side valve seat 78,
When the movable valve body 76 is in contact with the high temperature fluid side valve seat 77 in the opposite direction, the temperature sensing body spring 81 is at the most extended displacement point. Further, even when the flow rate is adjusted by the valve seat position adjusting means 86 and the valve is fully closed as shown in FIG. 2, the displacement region of the temperature sensitive body spring 81 is within the above-mentioned regulation range.

That is, the temperature-sensitive body spring 81 has a structure in which the displacement amount is restricted between these two points, and the displacement region and the storage / use temperature range (-30 ° C. to + 100 ° C.).
In Fig. 4, only the phase transformation of the R (Rhombohedral) phase or the mother phase occurs as shown in Fig. 4. As a result,
However, as is obvious, the hysteresis is overwhelmingly small as compared with the case where the phase transformation is performed up to the M (martensite) phase region. In the automatic temperature control operation by mechanical feedback described in the first embodiment, the temperature hysteresis is extremely small, fine temperature control is possible, and since martensite transformation does not occur, it is durable against repeated bending. There is an effect that the life is not deteriorated.

As described above, according to this embodiment, one movable valve body 76, the high temperature fluid side valve seat 77, and the low temperature fluid side valve seat 7 are provided.
8. Bias spring 79, temperature sensitive spring 81 made of a shape memory alloy that changes its spring constant according to temperature, and undergoes phase transformation of R (Rhombohedral) phase or mother phase in the storage / use temperature range, and biasing force adjusting means. 82, the valve seat position adjusting means 86 can be used to set the temperature of the mixed fluid, as well as to automatically adjust the temperature and the flow rate, and the temperature-sensitive body spring 81 is
It acts so that only the R (Rhombohedral) phase and the mother phase are repeatedly transformed in the operating temperature range. Therefore,
In the operating temperature range and the storage temperature range of the temperature sensitive body spring 81, the mixing temperature control device can be obtained in which the durability against repeated bending is not impaired, the hysteresis is small, and the temperature of the mixed fluid can be controlled with high responsiveness.

FIG. 5 is a block diagram of a mixing temperature control device showing a fourth embodiment of the present invention. The difference from the configuration of the mixing temperature control device of FIG. 1 is that stepping is performed to adjust the biasing force of the bias spring 79. Electric biasing force adjusting means 95 consisting of a motor
A temperature detection means 96 including a thermistor for detecting the temperature of the mixed fluid, a temperature setting means 97 for setting a target value of the temperature of the mixed fluid, and a temperature detected by the temperature detection means 96 and the temperature setting means 97. The point is that the electronic control means 98 for controlling the electric biasing force adjusting means 95 based on the set target value is provided. In FIG. 5, the mixed fluid passes while contacting the temperature sensitive body spring 81, the temperature of the mixed fluid is transferred to the temperature sensitive body spring 81 and mechanically feedback-controlled, and the electronic control means 98 causes the temperature detecting means 96.
The electric urging force adjusting means 95 is driven based on the mixed fluid temperature detected by and the target value set by the temperature setting means 97, and the temperature of the mixed fluid is electrically feedback controlled to the target value. Therefore, the temperature deviation due to the hysteresis of the temperature-sensitive body spring 81 made of a shape memory alloy, the water pressure fluctuation, the flow rate change, etc. is corrected by the electrical feedback control.

Further, when it is desired to change the total flow rate of the mixed fluid, when the valve seat position adjusting means 86 rotates the high temperature fluid side valve seat 77 in FIG. 5, the valve seat position adjusting male screw 87 advances and retreats to move the movable valve body 76 and the valve. The distance from the seat 77 can be changed, and the flow rate of the mixed fluid can be adjusted arbitrarily. Even when the flow rate is changed in this way, the mixed fluid temperature is automatically maintained at the target temperature set by the electric biasing force adjusting means 95 by the mechanical feedback action and the electrical feedback action described above. Act on. Furthermore, by moving the valve seat 77 by the valve seat position adjusting means 86, the valve seat 77 can be brought into a fully closed state.

That is, by operating the valve seat position adjusting means 86, the flow rate can be arbitrarily adjusted from fully open to fully closed, and the temperature of the mixed fluid is always maintained at the temperature set by the electric biasing force adjusting means 95. Movable valve body 76
Works.

As described above, according to this embodiment, one movable valve body 76, the high temperature fluid side valve seat 77, and the low temperature fluid side valve seat 7 are provided.
8, the bias spring 79, the temperature sensitive body spring 81, the electric biasing force adjusting means 95, and the valve seat position adjusting means 86 act to enable the temperature setting of the mixed fluid and the automatic temperature adjustment and flow rate adjustment, and the movable valve body. 76 and the high temperature fluid side valve seat 77, the high temperature fluid flowing in through the gap,
6 and the low temperature fluid flowing from the gap between the low temperature fluid side valve seat 78 are mixed, the mixed fluid passes while being in contact with the temperature sensitive body spring 81, and the mixed temperature is transferred to the temperature sensitive body spring 81 to transfer heat to the machine. Feedback control, the electronic control means 98 drives the electric urging force adjusting means 95 based on the mixed fluid temperature detected by the temperature detecting means and the target value set by the temperature setting means 97, and the mixed fluid The temperature is electrically feedback-controlled to the target value. Therefore, even if the temperature deviation is instantaneously caused by the hysteresis of the temperature sensitive body spring 81, the fluid pressure fluctuation, the flow rate change by the valve seat position adjusting means 86, etc., the temperature is corrected by the electric feedback control.

As described above, the transient temperature fluctuation of the mixed fluid is caused by the temperature sensitive body spring 81 in which the mixed fluid is made of shape memory alloy.
Is quickly adapted by mechanical feedback control while in contact with, and the steady-state offset is detected by the temperature detection means 96 and electrically feedback-controlled,
It is possible to obtain the mixing temperature control device having the function of automatically adjusting the mixing temperature of the fluid and the function of adjusting the total flow rate with one movable valve body 76, and the excellent temperature control function that does not cause temperature deviation due to fluctuations in the fluid pressure or changes in the flow rate.

FIG. 6 is a block diagram of the mixing temperature control device showing the fifth and sixth embodiments of the present invention. The difference from the configuration of the mixing temperature control device of FIG.
The manual drive unit 100 is provided in the electric urging force adjusting means 99 which is a motor for adjusting the urging force.
Further, the electric urging force adjusting means 99 includes a moisture-proof means 101 in which the motor is covered with a resin which also serves as the manual drive section 100.
This is a configuration provided with a manual / electric dual-purpose drive means 102 that changes the spring biasing force of the movable valve body 76 by either electrically driving the motor or manually driving the manual drive unit 100. Reference numeral 103 denotes a sliding seal member provided between the housing cap 88 and the resin moisture-proof means 101, which prevents moisture from invading and electrically movable the spring support 85 by an electric bias adjusting means 99 composed of a motor. When it is driven, it also functions as a sliding resistor that blocks the rotation of the motor body and rotates only the urging force adjusting male screw 84. When the spring biasing force of the movable valve body 76 is manually changed, when the manual drive unit 100 is manually rotated, the biasing force adjusting male screw 84 is rotated together with the motor body, and the movable spring receiver 85 is rotated.
It is a configuration that advances and retracts. In FIG. 6, the mixed fluid passes while contacting the temperature sensitive body spring 81, the temperature of the mixed fluid is transferred to the temperature sensitive body spring 81 and mechanically feedback-controlled, and the electronic control means 98 is controlled by the temperature detecting means 96. The electric urging force adjusting means 99 is driven based on the detected mixed fluid temperature and the target value set by the temperature setting means 97, and the temperature of the mixed fluid is electrically feedback-controlled to the target value. Therefore, the temperature deviation due to the hysteresis of the temperature-sensitive body spring 81 made of a shape memory alloy, the water pressure fluctuation, the flow rate change, etc. is corrected by the electrical feedback control.

Further, when it is desired to change the total flow rate of the mixed fluid, when the valve seat position adjusting means 86 in FIG. 6 rotates the high temperature fluid side valve seat 77, the valve seat position adjusting male screw 87 advances and retracts the movable valve body 76 and the valve. The distance from the seat 77 can be changed, and the flow rate of the mixed fluid can be adjusted arbitrarily. Even when the flow rate is changed in this way, the mixed fluid temperature is automatically maintained at the target temperature set by the electric biasing force adjusting means 99 by the mechanical feedback action and the electrical feedback action described above. Act on. Furthermore, by moving the valve seat 77 by the valve seat position adjusting means 86, the valve seat 77 can be brought into a fully closed state.

That is, by operating the valve seat position adjusting means 86, the flow rate can be arbitrarily adjusted from fully open to fully closed, and the temperature of the mixed fluid is always maintained at the temperature set by the electric biasing force adjusting means 99. Movable valve body 76
Works.

As described above, according to this embodiment, one movable valve body 76, the high temperature fluid side valve seat 77, and the low temperature fluid side valve seat 7 are provided.
8, the bias spring 79, the temperature sensitive body spring 81, the biasing force adjusting means 82, and the valve seat position adjusting means 86 act so that the temperature of the mixed fluid can be set and the automatic temperature and flow rate can be adjusted, and the movable valve body 76 and High temperature fluid side valve seat 7
7 is mixed with the high temperature fluid that has flowed in through the gap between the movable valve body 76 and the low temperature fluid side valve seat 78, and the mixed fluid passes while contacting the temperature sensor spring 81. The mixed temperature is thermally transferred to the temperature sensitive body spring 81 and mechanically feedback-controlled, and the electronic control means 98 sets the mixed fluid temperature detected by the temperature detecting means 96 to the target value set by the temperature setting means 97. Based on this, the electric urging force adjusting means 99 is driven, and the mixed fluid temperature is electrically feedback controlled to a target value. Therefore, even if the temperature deviation is instantaneously caused by the hysteresis of the temperature sensitive body spring 81, the fluid pressure fluctuation, the flow rate change by the valve seat position adjusting means 86, etc., the temperature is corrected by the electric feedback control.

Further, according to the fifth embodiment, the electric urging force adjusting means 99 is provided with the manual driving section 100 so that the manual driving section 100 can be operated by the manual driving section 100 even in case of power failure or failure of the electronic control means 98 or the motor 99. The set point of the mixing temperature can be changed, and it can be used without losing the automatic mixing temperature adjustment function and the total flow rate adjustment function.

Further, according to the sixth embodiment, the electric urging force adjusting means 99 is provided with a moisture-proof means 101 in which the motor is covered with resin which also serves as the manual drive section 100, and the motor is electrically driven or the manual drive section 100 is provided. It is configured to include a manual electric dual-purpose drive unit 102 that changes the spring biasing force of the movable valve body 76 by either manually driving the motor, and is manually driven even in the event of a power failure or failure of the electronic control unit 98, the motor 99, or the like. It is possible to change the set point of the mixing temperature by the unit 100, and to use the mixing temperature automatic adjusting function and the total flow rate adjusting function without losing it, and to provide a mixing temperature control device that can be used in a humid place.

[0066]

As described above in detail, the mixing temperature control device of the present invention is provided with a movable valve body for adjusting the mixing ratio of the high temperature fluid and the low temperature fluid, and a high temperature fluid side valve provided opposite to the movable valve body. A seat and a low temperature fluid side valve seat, a temperature sensitive body spring for urging the movable valve body in a direction to decrease the proportion of the high temperature fluid with an increase in temperature of the mixed fluid, and a bias spring for urging in the opposite direction. A biasing force adjusting means for varying the biasing force of at least one of the two springs to adjust the mixing temperature and a valve seat position adjusting means for varying the valve seat position of at least one of the two valve seats are provided. With such a configuration, one valve can realize two functions of the fluid mixing temperature automatic adjustment function and the total flow rate adjustment, and a compact and inexpensive mixing temperature control device can be provided.

Further, in the mixing temperature control device of the present invention, the high temperature fluid side valve seat and the low temperature fluid side valve seat provided facing the movable valve body, and the direction of decreasing the proportion of the high temperature fluid as the temperature of the mixed fluid rises. A temperature sensitive body spring for biasing the movable valve body, a bias spring biasing in the opposite direction, a biasing force adjusting means for varying the biasing force of at least one of the two springs, and adjusting the mixing temperature; Since the shear strain regulating means for regulating the shear strain γ of the body spring and the valve seat position adjusting means for adjusting the flow rate by varying the valve seat position of at least one of the two valve seats are provided in one valve body. It has the function of automatically adjusting the mixing temperature of the fluid and the function of adjusting the total flow rate, and it is possible to secure the durability against repeated flexure of the temperature sensing body spring. In particular, since the structure is equipped with a shear strain regulating means that regulates the shear strain of the temperature sensitive spring within a predetermined range, the hysteresis of the force during temperature deflection is small and fine temperature control is possible, and the durability of the temperature sensitive spring is impaired. Without changing the temperature, automatic temperature control can be performed with the same performance.

Further, the mixing temperature control device of the present invention includes a high temperature fluid side valve seat and a low temperature fluid side valve seat which are provided to face the movable valve body, respectively, and R (Rhomboh) in the storage / use temperature range.
edral) or a matrix phase-memory alloy that undergoes a phase transformation, and is attached in the opposite direction to the temperature-sensitive body spring that biases the movable valve body in the direction that decreases the proportion of the high temperature fluid as the temperature of the mixed fluid rises. Biasing spring, biasing force adjusting means for varying the biasing force of at least one of the two springs to adjust the mixing temperature, and valve seat for varying the valve seat position of at least one of the two valve seats to adjust the flow rate. As it has a position adjusting means, it has a function to automatically adjust the mixing temperature of the fluid and a total flow rate with a single valve body, and also secures durability against repeated bending in the operating temperature and storage temperature range of the temperature sensor spring. It is possible to provide a mixing temperature control device having a small hysteresis.

Further, in the mixed temperature control device of the present invention, the high temperature fluid side valve seat and the low temperature fluid side valve seat, which are provided to face the movable valve body, respectively, and the proportion of the high temperature fluid are reduced as the temperature of the mixed fluid rises. A temperature-sensitive body spring for urging the movable valve element in one direction, a bias spring for urging in the opposite direction, and an electric urging force adjusting means for adjusting the mixing temperature by changing the urging force of at least one of the two springs. A valve seat position adjusting means for adjusting the flow rate by changing the valve seat position of at least one of the two valve seats, a temperature detecting means for detecting the temperature of the mixed fluid, and a temperature setting for setting a target value of the mixed fluid temperature. Means and electronic control means for controlling the electric biasing force adjusting means on the basis of the temperature detected by the temperature detecting means and the target value set by the temperature setting means, so that one valve body Mixing temperature of And having an overall flow rate adjustment function and regulation function, can provide a mixing temperature controller having a temperature control function with excellent no temperature deviation due to fluid pressure fluctuations and flow rate changes.

Further, in the mixed temperature control device of the present invention, the high temperature fluid side valve seat and the low temperature fluid side valve seat, which are provided to face the movable valve body, respectively, and the proportion of the high temperature fluid are reduced as the temperature of the mixed fluid rises. A temperature-sensitive body spring for urging the movable valve body in one direction, a bias spring for urging the movable valve body in the opposite direction, and a manual drive section for adjusting the mixing temperature by varying the urging force of at least one of the two springs. Electric biasing force adjusting means, valve seat position adjusting means for changing the valve seat position of at least one of the two valve seats to adjust the flow rate, temperature detecting means for detecting the temperature of the mixed fluid, and temperature of the mixed fluid Since the temperature setting means for setting the target value and the electronic control means for controlling the electric biasing force adjusting means based on the temperature detected by the temperature detecting means and the target value set by the temperature setting means are provided, One valve It has the function of automatically adjusting the mixing temperature of fluids and the function of adjusting the total flow rate.It also has an excellent temperature control function that does not cause temperature deviation due to water pressure fluctuations and set temperature changes. A usable mixing temperature control device can be provided.

Further, in the mixed temperature control device of the present invention, the high temperature fluid side valve seat and the low temperature fluid side valve seat, which are provided to face the movable valve body, respectively, and the proportion of the high temperature fluid are reduced as the temperature of the mixed fluid rises. Electricity provided with a temperature sensitive body spring for urging the movable valve element in one direction, a bias spring for urging in the opposite direction, and a manual drive section for adjusting the mixing temperature by varying the urging force of at least one of the two springs. Dynamic biasing force adjusting means, valve seat position adjusting means for adjusting the flow rate of the fluid by changing the valve seat position of at least one of the two valve seats, temperature detecting means for detecting the temperature of the mixed fluid, and mixed fluid An electric control unit for controlling the electric urging force adjusting unit based on the temperature detected by the temperature detecting unit and the target value set by the temperature setting unit; Dynamic bias adjustment The stage is provided with a moisture-proof means in which the motor is covered with resin which also serves as a manual drive unit, and the spring biasing force of the movable valve element is changed by either electrically driving the motor or manually driving the manual drive unit. Since it has a structure that is equipped with both manual and electric drive means, it has a function to automatically adjust the mixing temperature of fluids and a total flow rate with a single valve body, can be used in humid places, and can be used in the event of a power failure or failure of electronic control means, etc. Can also provide a manual mixing temperature controller.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a mixing temperature control device showing a first embodiment of the present invention.

FIG. 2 is a structural cross-sectional view showing a valve closed state of the same mixing temperature control device.

FIG. 3 is a characteristic diagram of generated urging forces at respective displacements and temperatures of the temperature sensing body spring and the bias spring of the mixed temperature control device according to the second embodiment of the present invention.

FIG. 4 is a characteristic diagram of a temperature sensing body spring of a mixing temperature control device showing a third embodiment of the present invention.

FIG. 5 is a configuration diagram of a mixing temperature control device showing a fourth embodiment of the present invention.

FIG. 6 is a configuration diagram of a mixing temperature control device showing fifth and sixth embodiments of the present invention.

FIG. 7 is a block diagram of a conventional mixing temperature control device.

[Explanation of symbols]

 76 Movable valve body 77 High temperature fluid side valve seat 78 Low temperature fluid side valve seat 79 Bias spring 81 Temperature sensing body spring 82 Biasing force adjusting means 86 Valve seat position adjusting means 94 Shear strain regulating means 95 Electric biasing force adjusting means 96 Temperature detection Means 97 Temperature setting means 98 Electronic control means 99 Electric urging force adjusting means 100 Manual drive unit 101 Moisture proof means 102 Manual electric dual-use drive means

Claims (6)

[Claims] 1. A movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, a high temperature fluid side valve seat and a low temperature fluid side valve seat which are provided to face the movable valve body respectively, and a temperature of the mixed fluid. A temperature sensitive body spring for urging the movable valve body in a direction to decrease the proportion of the high temperature fluid as the temperature rises, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs. Mixing temperature control comprising biasing force adjusting means for varying the force and adjusting the mixing temperature, and valve seat position adjusting means for varying the valve seat position of at least one of the two valve seats to adjust the flow rate of the fluid. apparatus. 2. A movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, a high temperature fluid side valve seat and a low temperature fluid side valve seat which are respectively provided to face the movable valve body, and a temperature of the mixed fluid. A temperature sensitive body spring for urging the movable valve body in a direction to decrease the proportion of the high temperature fluid as the temperature rises, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs. A biasing force adjusting means for adjusting the mixing temperature by varying the force, a shear strain restricting means for restricting the shear strain γ of the temperature sensitive spring, and a fluid for changing the valve seat position of at least one of the two valve seats. And a valve seat position adjusting means for adjusting the flow rate of the mixed temperature control device. 3. A movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, a high temperature fluid side valve seat and a low temperature fluid side valve seat which are provided to face the movable valve body, respectively, and a storage / use temperature range. A shape memory alloy that undergoes a phase transformation of R (Rhombohedral) phase or mother phase, and a temperature sensitive body spring for urging the movable valve body in a direction to decrease the proportion of the high temperature fluid as the temperature of the mixed fluid increases. A bias spring for urging the movable valve element in opposite directions, and an urging force adjusting means for adjusting the mixing temperature by changing the urging force of at least one of the two springs.
A mixing temperature control device comprising valve seat position adjusting means for adjusting the flow rate of the fluid by changing the valve seat position of at least one of the two valve seats. 4. A movable valve body for adjusting a mixing ratio of a high-temperature fluid and a low-temperature fluid, a high-temperature fluid side valve seat and a low-temperature fluid side valve seat which are provided to face the movable valve body respectively, and a temperature of the mixed fluid. A temperature sensitive body spring for urging the movable valve body in a direction to decrease the proportion of the high temperature fluid as the temperature rises, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs. An electric biasing force adjusting means for changing the force and adjusting the mixing temperature; a valve seat position adjusting means for changing the valve seat position of at least one of the two valve seats to adjust the flow rate of the fluid; Temperature detecting means for detecting the temperature, temperature setting means for setting the target value of the mixed fluid temperature,
A mixing temperature control device comprising: an electronic control unit that controls the electric biasing force adjusting unit based on a temperature detected by the temperature detecting unit and a target value set by the temperature setting unit. 5. A movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, a high temperature fluid side valve seat and a low temperature fluid side valve seat which are provided to face the movable valve body respectively, and a temperature of the mixed fluid. A temperature sensitive body spring for urging the movable valve body in a direction to decrease the proportion of the high temperature fluid as the temperature rises, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs. An electric biasing force adjusting means having a manual driving part for varying the force and adjusting the mixing temperature, and a valve seat position adjusting means for varying the valve seat position of at least one of the two valve seats to adjust the flow rate of the fluid. A temperature detecting means for detecting the temperature of the mixed fluid, a temperature setting means for setting a target value of the mixed fluid temperature, a temperature detected by the temperature detecting means and a target value set by the temperature setting means. Based on the electrical attachment Mixing temperature control device including an electronic control means for controlling the force adjustment means. 6. A movable valve body for adjusting a mixing ratio of a high temperature fluid and a low temperature fluid, a high temperature fluid side valve seat and a low temperature fluid side valve seat which are provided to face the movable valve body respectively, and a temperature of the mixed fluid. A temperature sensitive body spring for urging the movable valve body in a direction to decrease the proportion of the high temperature fluid as the temperature rises, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs. An electric biasing force adjusting means having a manual driving part for varying the force and adjusting the mixing temperature, and a valve seat position adjusting means for varying the valve seat position of at least one of the two valve seats to adjust the flow rate of the fluid. A temperature detecting means for detecting the temperature of the mixed fluid, a temperature setting means for setting a target value of the mixed fluid temperature, a temperature detected by the temperature detecting means and a target value set by the temperature setting means. Based on the electrical attachment An electronic control unit for controlling the force adjusting unit is provided, and the electric biasing force adjusting unit is provided with a moisture-proof unit in which the motor is covered with resin which also serves as the manual drive unit, and the motor is electrically driven or manually driven. A mixed temperature control device comprising a manual electric dual-purpose drive means for varying the spring biasing force of the movable valve body by either manually driving the section.