JP2985723B2 - Mixing temperature control device - Google Patents

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 Application Laid-Open No. 6-159532). In FIG. 1, a housing 12 of the hot and cold water mixing device 10 is substantially liquid-tightly fastened to a main body 114, and to an outlet fitting 16 which is fastened to this body by screwing or the like into a liquid-tight manner. And a cap 18.

The housing 12 has inlets 20 and 22 formed therein, and the inlet 20 functions 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. In 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 communicate with primary pressure chambers 28 and 30, respectively, so that hot and cold water having a primary pressure is supplied to the primary pressure chambers 28 and 30.
And 30 respectively.

A pressure receiving piston 26 is fitted into the bore 24 with a predetermined radial clearance, and slides in the bore 24. Hot-side primary pressure chamber 28 and water-side primary pressure chamber 30
Is connected to the hot water side valve chamber 36 via the valve seats 32 and 34, respectively.
And the water side valve chamber 38. The hot water side valve seat 32 and the water side valve chamber 34 are coaxially aligned and are symmetrically arranged with respect to each other. The water-side valve chamber 38 communicates 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. It flows into the hot water side valve chamber 36. Therefore, the hot-water valve chamber 36 functions 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.

[0005] Inside the housing 12, a movable valve body unit 46 is movable in the axial direction. This valve unit 4
6 has a valve shaft 48, and a hot water side valve body 50 and a water side valve body 52 fixed to both ends of the valve shaft 48 by nuts, respectively. 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 side valve element 50 and the water side valve element 52 are coaxially aligned, and the flow of hot water is controlled in cooperation with the hot water side valve seat 32 and the water side valve seat 34, respectively. The effective pressure receiving areas of the pressure receiving piston 26, the hot water side valve body 50, and the water side valve body 52 are equal to each other, and the primary pressure in the hot side primary pressure chamber 28 acts on the hot water side 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 side valve body 50 are equal, the force acting on the hot water side valve body 50 by the primary pressure in the hot water side primary pressure chamber 28 depends on the primary pressure. The force acting on the pressure receiving piston 26 is canceled. Similarly, the force acting on the water-side valve body 52 due to the primary pressure in the water-side primary pressure chamber 30 and the force acting on the pressure receiving piston 26 due to the primary pressure cancel each other.
Therefore, the biasing force due to the primary pressure of the hot and cold water does not act on the movable valve body unit 46.

The hot / water mixing chamber 36 and the water-side valve body 38 communicate with each other, and the secondary pressures in the two are equal.
The eccentric force due to the secondary pressure does not act on the movable valve body unit 46. Therefore, the movable valve body unit 46
Is not affected by transient fluctuations in hot and cold water pressure,
Positioning is performed by balancing two types of mechanical biasing forces acting in mutually opposite directions. That is, coil springs 54 and 56 are arranged in a compressed state in the hot and cold water mixing chamber 36 and the water side valve chamber 38, respectively.

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

The other coil spring 56 acts as a bias spring, and is formed of a normal 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 thereto. One end of the bias spring 56 is supported by the water-side valve body 52, and the other end 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 the preload of the bias spring 56 can be adjusted by rotating a handle 62 of the adjusting screw. The bias spring 56 urges the movable valve unit 46 left and right.

That is, in Japanese Patent Application Laid-Open No. Hei 6-159532, which is a conventional hot water mixing apparatus, the temperature sensing element 54 has a characteristic region in which the spring constant changes linearly (linearly) according to a temperature change. The movable valve body 46 is actuated by balancing the biasing force of the coil spring 54 made of shape memory alloy and the biasing force of the bias spring 56 in the linear characteristic region, thereby operating the movable valve body 46 and overshooting or undershooting. There has been proposed a hot and cold water mixing apparatus capable of performing fine temperature control without causing the problem.

[0011]

However, the conventional mixing temperature control device as described above can adjust the mixing temperature of hot and cold water, but requires a separate flow control valve to control the total mixed flow rate. And problems in terms of size and cost.

The present invention has been made to solve the above problems, and
A first object is to provide a compact and inexpensive mixing temperature control device that can realize two functions of a fluid mixing temperature automatic adjustment function and a total flow rate adjustment with one valve element.

The second 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 one valve body.
An object of the present invention is to provide a mixing temperature control device that ensures durability against repeated bending of a temperature sensing spring.

A third 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 one valve body.
It is an object of the present invention to provide a mixing temperature control device which ensures durability against repeated bending and has a small hysteresis in a range of a use temperature and a storage temperature of a temperature sensing spring.

A fourth 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 one valve body.
It is an object of the present invention to provide a mixing temperature control device having an excellent temperature control function without temperature deviation due to fluid pressure fluctuation or flow rate change.

A fifth object is to provide a function of automatically adjusting the mixing temperature of the fluid and the function of adjusting the total flow rate with a single valve element, and to provide an excellent temperature control function that is free from temperature deviation due to fluctuations in water pressure or a change in set temperature. It is an object of the present invention to provide a mixing temperature control device which can be used manually even at the time of a power failure or a failure of electronic control means.

A sixth object is to provide a function of automatically adjusting the mixing temperature of the fluid and the function of adjusting the overall flow rate with a single valve element, which can be used in a humid place, and which can be manually operated even in the event of a power failure or failure of electronic control means. It is an object of the present invention to provide a mixing temperature control device that can be used in a computer.

[0018]

In order to achieve the first object, a mixing temperature control device according to the present invention comprises: 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 that are provided to face each other, a temperature-sensitive body spring that urges the movable valve body in a direction to decrease a ratio of the high-temperature fluid with a rise in the temperature of the mixed fluid; A bias spring for urging the movable valve body in the opposite direction, an urging force adjusting means for varying the urging 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 And a valve seat position adjusting means for adjusting the flow rate of the fluid.

In order to achieve the second object, a mixing temperature control device according to 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 opposite to the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensitive body spring made of a shape memory alloy, and urging the movable valve body in a direction to decrease a ratio of a high-temperature fluid with a rise in the temperature of the mixed fluid; A bias spring for urging the valve body in the opposite direction, an urging force adjusting means for adjusting the mixing temperature by varying the urging force of at least one of the two springs, and a shear for regulating the shear strain γ of the thermosensitive body spring. A strain regulating means and a valve seat position adjusting means for adjusting a flow rate of the fluid by changing a valve seat position of at least one of the two valve seats are provided.

In order to achieve the third object, a mixing temperature control device according to 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 opposite to the movable valve body. The fluid-side valve seat and the low-temperature fluid-side valve seat are made of a shape memory alloy that undergoes a phase transformation of an R (Rhombohedral) phase or a parent phase in a storage / operating temperature range, and the ratio of the high-temperature fluid is increased as the temperature of the mixed fluid increases. A temperature sensing element spring for urging the movable valve element in a decreasing direction, a bias spring for urging the movable valve element in an opposite direction, and a variable urging force of at least one of the two springs to adjust the mixing temperature. And at least one of the two valve seats to adjust the valve seat position and adjust the flow rate of the fluid.

In order to achieve the fourth object, a mixing temperature control device according to 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 opposite to the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensitive body spring that urges the movable valve body in a direction to decrease the proportion of the high-temperature fluid with a rise in the temperature of the mixed fluid, and an opposite direction to the movable valve body. A bias spring that biases at least one of the two springs, an electrical biasing force adjusting unit that adjusts the biasing force of at least one of the two springs to adjust the mixing temperature, and that varies a valve seat position of at least one of the two valve seats. Valve seat position adjusting means for adjusting 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 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, a mixing temperature control device according to 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 opposite to the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensitive body spring that urges the movable valve body in a direction to decrease the proportion of the high-temperature fluid with a rise in the temperature of the mixed fluid, and an opposite direction to the movable valve body. Biasing force, electric biasing force adjusting means including a manual driving unit for adjusting the biasing force of at least one of the two springs to adjust the mixing temperature, and at least one of the two valve seats Valve seat position adjusting means for changing the seat position and adjusting 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, a mixing temperature control device according to 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 opposite to the movable valve body. A fluid-side valve seat and a low-temperature fluid-side valve seat, a temperature-sensitive body spring that urges the movable valve body in a direction to decrease the proportion of the high-temperature fluid with a rise in the temperature of the mixed fluid, and an opposite direction to the movable valve body. Biasing force, electric biasing force adjusting means including a manual driving unit for adjusting the biasing force of at least one of the two springs to adjust the mixing temperature, and at least one of the two valve seats Valve seat position adjusting means for changing the seat position and adjusting 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 a motor with a resin also serving as the manual driving unit. It is provided with a moisture-proof means and a manual electric drive means for varying the spring biasing force of the movable valve body by either electrically driving the motor or manually driving the manual drive unit. .

[0024]

According to the mixing temperature control device of the present invention, the biasing force of the temperature-sensitive body spring and the biasing direction of the temperature-sensitive body spring are applied to the movable valve for adjusting the mixing ratio of the high-temperature fluid and the low-temperature fluid. The biasing force of the opposite direction acts on the movable valve body by a bias spring, and the movable valve body is positioned at a position where the biasing forces of the two springs are balanced. It becomes a mixed fluid having a mixing ratio according to the opening position of the valve body, flows out around the temperature-sensitive body spring and flows out, and at this time, the temperature of the mixed fluid is mechanically fed back by the temperature-sensitive body spring. In addition, it acts so that the temperature is automatically adjusted by the balance between 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.

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

Further, the mixing temperature control device of the present invention has one movable valve body, a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, a temperature sensing body spring, an urging force adjusting means, and a valve seat. The temperature adjustment of the mixed fluid is performed by the position adjustment means and the automatic temperature adjustment and the flow rate adjustment can be performed, and the temperature-sensitive body spring made of a shape memory alloy is provided by the shear strain regulating means for regulating the shear strain γ of the temperature-sensitive body spring. Becomes a repetitive deflection within a range where the shear strain γ does not exceed a predetermined amount, and acts so as to control the temperature of the mixed fluid and to adjust the flow rate without impairing the durability of the temperature-sensitive body spring.

Further, in the mixing temperature control device of the present invention, the spring constant changes according to one movable valve element, the high temperature fluid side valve seat, the low temperature fluid side valve seat, the bias spring, and the temperature by the above-described configuration. Temperature-sensing spring made of a shape memory alloy that undergoes R (Rhombohedral) phase or parent phase transformation in the operating temperature range, biasing force adjusting means, valve seat position adjusting means, temperature setting of the mixed fluid, automatic temperature adjustment and flow rate adjustment And the temperature-sensitive body spring acts so as to perform only a phase transformation in which the R (Rhombohedral) phase and the parent phase are repeated in the storage / use temperature range. Therefore, in the operating temperature range and the storage temperature range of the temperature sensing spring, the durability against repeated bending is not impaired, and the temperature of the mixed fluid is controlled with small hysteresis and high responsiveness.

Further, according to the mixing temperature control device of the present invention, one movable valve body, a high-temperature fluid side valve seat, a low-temperature fluid side valve seat, a bias spring, a temperature sensing body spring, an urging force adjusting means, a valve seat are provided. The position adjusting means acts so that the temperature of the mixed fluid can be set as well as the automatic temperature adjustment and flow rate adjustment, and the high-temperature fluid flowing from the gap between the movable valve element and the high-temperature fluid side valve seat, and the movable valve element and the low-temperature fluid The low-temperature fluid flowing from the gap with the side valve seat is mixed, and the mixed fluid passes while contacting the temperature-sensitive body spring. The control means drives the electric urging force adjusting means based on the mixed fluid temperature detected by the temperature detecting means and the target value set by the temperature setting means, and electrically feeds the mixture temperature to the target value. Back control. Therefore, even if a temperature deviation occurs instantaneously due to hysteresis of the temperature sensing body spring, fluid pressure fluctuation, and 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 adjusted by the mechanical feedback control while the mixed fluid contacts the temperature-sensitive body spring made of the shape memory alloy. Since it is detected by the mixing temperature detection means and controlled by electrical feedback, it has a function of automatically adjusting the mixing temperature of the fluid and a function of adjusting the total flow rate with one valve body, and it is excellent without temperature deviation due to fluid pressure fluctuation or flow rate change Thus, a mixed temperature control device having an improved temperature control function is obtained.

Further, the mixing temperature control device of the present invention has one movable valve body, a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, a temperature sensing body spring, an urging force adjusting means, and a valve seat. The position adjusting means acts so that the temperature of the mixed fluid can be set as well as the automatic temperature adjustment and flow rate adjustment, and the high-temperature fluid flowing from the gap between the movable valve element and the high-temperature fluid side valve seat, and the movable valve element and the low-temperature fluid The low-temperature fluid flowing from the gap with the side valve seat is mixed, and the mixed fluid passes while contacting the temperature-sensitive body spring. The control means drives the electric biasing force adjusting means based on the mixed fluid temperature detected by the temperature detecting means and the target value set by the temperature setting means, and electrically controls the mixed fluid temperature to the target value. To Dobakku control. Therefore,
Even if a temperature deviation occurs instantaneously due to hysteresis of the temperature sensing body spring, fluctuations in fluid pressure, flow rate changes by the valve seat position adjusting means, etc., the temperature is corrected by electrical feedback control.

Further, the electric biasing force adjusting means is provided with a manual driving section, and the set point of the mixing temperature can be changed by the manual driving section even in the event of a power failure or failure of the electronic control means, etc. And can be used without losing the overall flow control function.

Further, the mixing temperature control device of the present invention has one movable valve body, a high temperature fluid side valve seat, a low temperature fluid side valve seat, a bias spring, a temperature sensing body spring, an urging force adjusting means, and a valve seat. The position adjusting means acts so that the temperature of the mixed fluid can be set as well as the automatic temperature adjustment and the flow rate adjustment, and the high-temperature fluid flowing from the gap between the movable valve element and the high-temperature fluid side valve seat, and the movable valve element and the low-temperature side The low-temperature fluid flowing from the gap with the valve seat is mixed, the mixed fluid passes while contacting the temperature-sensitive body spring, and the mixed temperature is heat-transferred to the temperature-sensitive body spring, mechanically feedback-controlled, and electronically controlled. The means drives the electric urging force adjusting means based on the mixed fluid temperature detected by the temperature detecting means and the target value set by the temperature setting means, and electrically feeds the mixture temperature to the target value. To click control. Therefore, even if a temperature deviation occurs instantaneously due to hysteresis of the temperature sensing body spring, fluid pressure fluctuation, and flow rate change by the valve seat position adjusting means, the temperature is corrected by the electric feedback control.

Further, the electric biasing force adjusting means includes a moisture proof means in which the motor is covered with a resin also serving as the manual driving section.
A configuration including a manual electric drive unit that varies the spring biasing force of the movable valve body by either electrically driving the motor or manually driving the manual driving unit,
The set point of the mixing temperature can be changed by the manual drive unit even at the time of power failure or failure of the electronic control means, etc., and it can be used without losing the mixing temperature automatic adjustment function and the overall flow rate adjustment function,
It can be used in humid places.

[0034]

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

FIG. 1 is a block diagram showing a first embodiment of the present invention. In FIG. 1, reference numeral 70 denotes 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, respectively. Hot water is supplied from the high-temperature fluid inlet 74 and the low-temperature fluid inlet 75 provided in the housing 73 to the mixing valve 71, and the gap between the high-temperature fluid-side valve seat 77 and the low-temperature fluid-side valve seat 78 is generated by the movement of the movable valve body 76. The distance changes in inverse proportion, and the mixing ratio of hot and cold water is adjusted. The movable valve body 76 has a cylindrical shape in which hot water and water flow inward from the surroundings. The movable valve body 76 is urged rightward in FIG. 1 by a bias spring 79, and according to the temperature provided in the mixing channel 80. The temperature-sensitive body spring 81 whose spring constant changes is also urged leftward in FIG. Since the temperature-sensitive body spring 81 changes its spring constant in accordance with the temperature, the urging force changes with the same constraint length, and the movable valve body 76 includes the bias spring 79 and the temperature-sensitive body spring 8.
1 is pushed and moved to a position where the biasing force is balanced. Also,
The biasing force adjusting means 82 for adjusting the biasing force of the bias spring 79 and the biasing force of the temperature sensing body spring 81 is rotated by rotating the biasing force adjusting operation section 83 to thereby adjust the biasing force adjusting male screw 84.
Moves forward and backward while rotating, and the movable spring receiver 85 biased by the bias spring 79 and the temperature-sensitive body spring 81 to the biasing force adjusting male screw 84 advances and retracts. 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 bias spring 79 is further compressed, and the biasing force of the bias spring 79 is increased, so that the movable valve body 76 is moved. Also start to move a little to the right. Then, the opening of the high temperature fluid inlet 74 becomes slightly larger,
Accordingly, the opening of the low-temperature fluid inlet 75 is slightly reduced. Therefore, the temperature of the mixed fluid slightly increases, the temperature of the temperature-sensitive body spring 81 also increases, and the urging force of the temperature-sensitive body spring 81 also slightly increases. Then, when the urging force of the temperature sensing spring 81 is balanced with the urging force of the bias spring 79, the movable valve body 76 stops. In this manner, the temperature of the mixed fluid can be set by the rotational position of the biasing force adjusting means 82, and the movable valve is adjusted by balancing the biasing forces of the bias spring 79 and the temperature sensing spring 81 so as to automatically maintain the set temperature. In this configuration, 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 advanced and retracted by the valve seat position adjusting means 86, and when the high temperature fluid side valve seat 77 is rotated by the valve seat position adjusting means 86 in FIG. The position adjustment male screw 87 advances and retreats, the distance between the movable valve body 76 and the valve seat 77 can be changed, and the flow rate of the mixed fluid can be adjusted. Also at this time, the movable valve body 76 operates by the balance between the temperature sensing body spring 81 and the bias spring 79, and the mixed fluid temperature acts so as to be 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
6 can be zero, that is, can be in a closed state. In other words, by operating the valve seat position adjusting means 86, the flow rate can be adjusted from fully open to fully closed. Reference numeral 88 denotes a housing cap provided with a biasing force adjusting female screw 89 and a valve seat position adjusting female screw 90. Reference numeral 91 denotes a mixed fluid outlet.

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

At this time, the position of the movable valve body 76 is determined by the 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. Is done. That is, when the actual temperature of the mixed fluid is lower than the biasing force of the bias spring 79 corresponding 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 The gap between the side valve seat 77 and the movable valve body 76 is increased, and the movable valve body 76 is moved in a direction in which the gap between the low-temperature fluid side valve seat 78 and the movable valve body 76 is reduced.

Conversely, when the actual temperature of the fluid mixture 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-sensitive body spring 81
Is greater, the clearance between the high temperature fluid valve seat 77 and the movable valve body 76 is reduced, and the distance between the low temperature fluid valve seat 78 and the movable valve body 76 is increased.
To move. In this way, by the action of the temperature sensing spring 81, mechanical feedback control automatically functions so that the desired temperature set by the biasing force adjusting means 82 is always maintained, and the movable valve body 76 operates. In addition, fine temperature control is possible.

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. Similarly, the ring-shaped sheet member 93 provided at the contact portion of the temperature-sensitive body spring 81
Unnecessary twisting action can be prevented, and it is effective to ensure good temperature control performance by mixing.

Further, when it is desired to change the overall flow rate of the mixed fluid, when the high temperature fluid side valve seat 77 is rotated by the valve seat position adjusting means 86 in FIG. The distance from the seat 77 can be changed, and the flow rate of the mixed fluid can be arbitrarily adjusted. Even when the flow rate is changed in this way, the temperature of the mixed fluid is automatically maintained at the target temperature set by the biasing force adjusting means 82 by operating the movable valve body 76 by the balance between the temperature sensing body spring 81 and the bias spring 79. Act to be. Further, the valve seat 77 is moved 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 constantly maintained at the temperature set by the urging force adjusting means 82. The valve 76 operates.

As described above, according to the present embodiment, two functions, that is, the function of automatically adjusting the mixing temperature of the fluid and the function of adjusting the total flow rate can be obtained with one movable valve element 86, thereby realizing 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. Note that a description of a configuration and an operation that are the same as those described in the first embodiment of the present invention will be omitted. 1 and 2
In the above, when the movable valve body 76 moves to the side where the temperature-sensitive body spring 81 is compressed as the shear strain regulating means 94,
The maximum strain amount of the temperature-sensitive body spring 81 at the time of the maximum compression is regulated by the structure in contact with the low-temperature fluid-side valve seat 78, and the shear strain γ of the temperature-sensitive body spring 81 is regulated to a range not exceeding 1%. is there. The shear strain γ of the coil spring
Is the product of the coil spring wire diameter d and the coil spring deflection δ, and the effective number of turns n of the coil spring and the average coil spring diameter D
It is divided by the product of the power and π and expressed as a percentage. In the expression, γ = (d × δ) ÷ (π × n × D ² ) × 100%
Becomes

FIG. 3 shows the relationship between displacement and force for the temperature sensing element spring 81, the bias spring 79, and the movable valve element 76 in the configuration shown in FIG. The urging force of the temperature sensing spring 81 changes according to each temperature and displacement as shown in the figure. Further, the biasing force of the bias spring 79 changes linearly according to the displacement regardless of the temperature. Bias spring 79
Since the displacement of the temperature-sensitive body spring 81 changes inversely with the displacement movement of the valve body 76, the intersection of the line of the temperature-sensitive body spring characteristic and the line of the bias spring characteristic at each temperature in FIG. It is an operating point.

If the high-temperature fluid is fully opened, the low-temperature fluid is fully closed, and the maximum temperature set point is determined by the temperature-sensitive spring 81.
In this embodiment, as shown in FIG. 3, the shear strain regulating means 94 is provided so that the shear strain γ becomes 1% or less at this position. Therefore, the shear strain exceeding 1% does not act on the temperature-sensitive body spring 81.

Therefore, the mixing temperature control device of this embodiment is composed of 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 sensing body spring 81, and an urging force adjusting means. 82, the temperature setting of the mixed fluid, automatic temperature adjustment and flow rate adjustment can be performed by the valve seat position adjusting means 86, and the shear strain regulating means 94 for regulating the shear strain γ of the thermosensitive body spring 81 can be used to control the temperature of the mixed fluid. The warm body spring 81 is repeatedly bent within a range where the shear strain γ is 1% or less, and
The temperature of the mixed fluid and the flow rate can be controlled without impairing the durability of the mixed fluid.

Further, when a comparative test is carried out between the case where the shear strain γ is larger than 1% and the case where the shear strain γ is smaller than 1%, a clear difference is also observed in the hysteresis, and the shear strain γ is not only in the durability but also in the initial temperature control performance. The effect of the shear strain restricting means 94 for restricting the amount to below a predetermined amount could be confirmed.

As described above, according to the present embodiment, the temperature-sensitive body spring 81 repeatedly bends within a range where the shear strain γ does not exceed a predetermined amount, and without impairing the durability of the temperature-sensitive body spring 81. In addition, a mixing temperature control device that 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 that ensures the durability of the temperature-sensitive body spring 81 against repeated bending is obtained.

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

The temperature-sensitive body spring 81 is a coil spring made of a nickel-titanium binary alloy or a nickel-titanium ternary alloy and heat-treated at a temperature of 400 to 500 ° C.
In the storage / operating temperature range (−30 ° C. to + 100 ° C.), the temperature-sensitive body spring 8 in the configuration of FIG. 1 is changed so that only the R (Rhombohedral) phase or the parent phase undergoes phase transformation as shown in FIG.
One displacement area is regulated.

That is, the movable valve body 76 is
When the temperature-sensitive body spring 81 is displaced most toward the compression side when the temperature-sensitive body spring 81 is in contact with 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-sensitive body spring 81 is at the point where the temperature-sensitive body spring 81 has been extended most. Also, when the flow rate is adjusted by the valve seat position adjusting means 86 and the fully closed state is established 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 regulated between these two points, and such a displacement region and a storage / use temperature range (−30 ° C. to + 100 ° C.)
In this case, as shown in FIG. 4, there is only a phase transformation of the R (Rhombohedral) phase or the parent phase. As a result, FIG.
However, as is apparent, 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 no martensitic transformation occurs, it is resistant to 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, a bias spring 79, a temperature-sensitive body spring 81 made of a shape memory alloy whose spring constant changes in accordance with temperature and undergoes a phase transformation of an R (Rhombohedral) phase or a parent phase in a storage / use temperature range, and an urging force adjusting means. 82, the temperature of the mixed fluid can be set and the automatic temperature control and the flow rate can be controlled by the valve seat position adjusting means 86.
In the operating temperature range, it acts so that there is only a phase transformation in which the R (Rhombohedral) phase and the mother phase are repeated. Therefore,
In the operating temperature range and the storage temperature range of the temperature-sensitive body spring 81, a mixed temperature control device capable of controlling the temperature of the mixed fluid with small hysteresis and high responsiveness without impairing durability against repeated bending is obtained.

FIG. 5 is a block diagram of a mixing temperature control device according to a fourth embodiment of the present invention. The difference from the configuration of the mixing temperature control device of FIG. Electric biasing force adjusting means 95 composed of a motor
Temperature detecting means 96 comprising a thermistor for detecting the temperature of the mixed fluid, temperature setting means 97 for setting a target value of the temperature of the mixed fluid, and the temperature detected by the temperature detecting means 96 and the temperature setting means 97. An electronic control unit 98 that controls the electric urging force adjusting unit 95 based on the set target value is provided. 5, the mixed fluid passes while contacting the temperature-sensitive body spring 81, the temperature of the mixed fluid is heat-transferred to the temperature-sensitive body spring 81 and mechanically feedback-controlled, and the electronic control means 98 includes a temperature detecting means 96.
The electric urging force adjusting means 95 is driven based on the temperature of the mixed fluid detected by the above 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 the shape memory alloy, the fluctuation of the water pressure and the change of the flow rate is corrected by the electric feedback control.

Further, when it is desired to change the overall flow rate of the mixed fluid, when the high-temperature fluid side valve seat 77 is rotated by the valve seat position adjusting means 86 in FIG. The distance from the seat 77 can be changed, and the flow rate of the mixed fluid can be arbitrarily adjusted. 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 urging force adjusting means 95 by the mechanical feedback action and the electrical feedback action described above. Act on. Further, by moving the valve seat 77 by the valve seat position adjusting means 86, it can be brought to the 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 urging force adjusting means 95. Movable valve body 76
Operates.

As described above, according to this embodiment, one movable valve element 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 sensing spring 81, the electric biasing force adjusting means 95, and the valve seat position adjusting means 86 act so that the temperature of the mixed fluid can be set and the automatic temperature adjustment and flow rate adjustment can be performed. The high temperature fluid flowing from the gap between the high temperature fluid side valve seat 77 and the movable valve element 7
The low-temperature fluid flowing from the gap between the low-temperature fluid side valve seat 78 and the low-temperature fluid-side valve seat 78 is mixed, and the mixed fluid passes while contacting the temperature-sensing body spring 81, and the mixed temperature is transferred to the temperature-sensing body spring 81 by heat transfer. The electronic control unit 98 drives the electric urging force adjusting unit 95 based on the mixed fluid temperature detected by the temperature detecting unit and the target value set by the temperature setting unit 97, and controls the mixed fluid. The temperature is electrically feedback controlled to the target value. Therefore, even if a temperature deviation occurs instantaneously due to the hysteresis of the temperature-sensitive body spring 81, the fluid pressure fluctuation, and the flow rate change by the valve seat position adjusting means 86, the temperature is corrected by the electric feedback control.

As described above, the transient temperature fluctuation of the mixed fluid is caused by mixing the mixed fluid with the temperature-sensitive body spring 81 made of a shape memory alloy.
, Is quickly adapted by the mechanical feedback control, and the steady-state offset is detected by the temperature detecting means 96 and is controlled by the electric feedback.
With one movable valve body 76, a mixing temperature control device having an excellent temperature control function having a function of automatically adjusting the mixing temperature of the fluid and a function of adjusting the total flow rate and no temperature deviation due to a change in the fluid pressure or a change in the flow rate can be obtained.

FIG. 6 is a configuration diagram of a mixed temperature control device showing a fifth embodiment and a sixth embodiment of the present invention. The difference from the configuration of the mixed temperature control device of FIG.
The manual driving unit 100 is provided in the electric urging force adjusting means 99 including 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 also serving as the manual driving unit 100,
The configuration is provided with a manual electric / electrical drive unit 102 that varies the spring biasing force of the movable valve body 76 by either electrically driving the motor or manually driving the manual driving unit 100. Reference numeral 103 denotes a sliding seal member provided between the housing cap 88 and the moisture-proof means 101 made of resin. The sliding seal member 103 prevents moisture from entering, and the movable spring receiver 85 is controlled by an electric biasing force adjusting means 99 comprising a motor. When driven, the motor also serves as a sliding resistor that prevents rotation of the motor body and rotates only the biasing force adjusting male screw 84. When the spring urging force of the movable valve body 76 is to be changed manually, when the manual driving unit 100 is manually rotated, the urging force adjusting male screw 84 rotates together with the motor body, and the movable spring receiver 85 is rotated.
Is configured to move forward and backward. 6, the mixed fluid passes while contacting the temperature-sensitive body spring 81, the temperature of the mixed fluid is heat-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. Based on the detected mixed fluid temperature and the target value set by the temperature setting means 97, the electric urging force adjusting means 99 is driven to electrically feedback-control the temperature of the mixed fluid to the target value. Therefore, the temperature deviation due to the hysteresis of the temperature-sensitive body spring 81 made of the shape memory alloy, the fluctuation of the water pressure and the change of the flow rate is corrected by the electric feedback control.

In order to change the overall flow rate of the mixed fluid, when the high temperature fluid side valve seat 77 is rotated by the valve seat position adjusting means 86 in FIG. The distance from the seat 77 can be changed, and the flow rate of the mixed fluid can be arbitrarily adjusted. 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 urging force adjusting means 99 by the above-described mechanical feedback action and electric feedback action. Act on. Further, by moving the valve seat 77 by the valve seat position adjusting means 86, it can be brought to the 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 urging force adjusting means 99. Movable valve body 76
Operates.

As described above, according to the present embodiment, one movable valve element 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 sensing body spring 81, the urging 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 adjustment and flow rate adjustment can be performed. High temperature fluid side valve seat 7
7 and the low-temperature fluid flowing from the gap between the movable valve body 76 and the low-temperature fluid side valve seat 78 are mixed, and the mixed fluid passes while contacting the temperature-sensitive body spring 81. The mixed temperature is heat-transferred to the temperature-sensitive body spring 81 and mechanically feedback-controlled, and the electronic control means 98 adjusts 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 the target value. Therefore, even if a temperature deviation occurs instantaneously due to the hysteresis of the temperature-sensitive body spring 81, the fluid pressure fluctuation, and the flow rate change by the valve seat position adjusting means 86, the temperature is corrected by the electric feedback control.

According to the fifth embodiment, the electric urging force adjusting means 99 is further provided with a manual driving section 100, so that the electric driving force adjusting section 99 is controlled by the manual driving section 100 even in the event of a 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 adjusting function of the mixing temperature and the total flow rate adjusting function.

According to the sixth embodiment, the electric biasing force adjusting means 99 further comprises a moisture proof means 101 in which the motor is covered with a resin also serving as the manual driving section 100, and the motor is electrically driven or manually driven. And a manual electric / electrical drive unit 102 that varies the spring biasing force of the movable valve body 76 by either manual driving. The mixing temperature set point can be changed by the unit 100, and a mixing temperature control device that can be used without losing the mixing temperature automatic adjustment function and the overall flow rate adjustment function and that can be used in a humid place can be provided.

[0066]

As described in detail above, the mixing temperature control apparatus according to 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 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 that urges the movable valve body in a direction to decrease the proportion of the high-temperature fluid with a rise in the temperature of the mixed fluid, and a bias spring that urges the movable valve body in the opposite direction. An urging force adjusting means for adjusting a mixing temperature by changing an urging force of at least one of the two springs, and a valve seat position adjusting means for adjusting a flow rate by changing a valve seat position of at least one of the two valve seats are provided. With such a configuration, two functions, that is, the function of automatically adjusting the mixing temperature of the fluid and the function of adjusting the total flow rate can be realized by one valve body, and a compact and inexpensive mixing temperature control device can be provided.

The mixing temperature control device according to the present invention further comprises a high-temperature fluid side valve seat and a low-temperature fluid side valve seat provided opposite to the movable valve body, and a direction for decreasing the ratio of the high-temperature fluid as the temperature of the mixed fluid rises. Temperature-sensing body spring for urging the movable valve body in the opposite direction, a bias spring for urging the movable valve body in the opposite direction, urging force adjusting means for adjusting the mixing temperature by changing the urging force of at least one of the two springs, Shear strain regulating means for regulating the shear strain γ of the body spring, and a valve seat position adjusting means for adjusting the flow rate by varying at least one of the two valve seats, so that only one valve element. In addition to having a function of automatically adjusting the mixing temperature of the fluid and a function of adjusting the total flow rate, it is possible to ensure durability against repeated bending of the temperature sensing spring. In particular, the structure with the shear strain regulating means that regulates the shear strain of the temperature-sensitive body spring within a predetermined range, so that the hysteresis of the force in temperature deflection is small and the temperature can be finely adjusted, and the durability of the temperature-sensitive body spring is impaired. Automatic temperature control can be performed without changing performance for many years.

The mixing temperature control device of the present invention further comprises a high-temperature fluid side valve seat and a low-temperature fluid side valve seat provided opposite to the movable valve body, respectively, in the storage and use temperature range.
edral) A temperature-sensitive body spring made of a shape memory alloy that undergoes phase transformation of a phase or a parent phase. The temperature-sensitive body spring urges the movable valve element in a direction to decrease 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 a valve seat for varying the position of at least one of the two valve seats to adjust the flow rate. With a structure with position adjustment means, a single valve body has a function of automatically adjusting the mixing temperature of the fluid and a function of adjusting the total flow rate, and also ensures durability against repeated bending in the operating temperature and storage temperature range of the temperature sensing spring. In addition to this, it is possible to provide a mixing temperature control device having a small hysteresis.

Further, in the mixing temperature control device of the present invention, a high-temperature fluid side valve seat and a low-temperature fluid side valve seat provided opposite to the movable valve body, respectively, reduce the proportion of the high-temperature fluid as the temperature of the mixed fluid rises. A temperature-sensitive body spring for urging the movable valve body in the 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 changing a valve seat position of at least one of the two valve seats to adjust a flow rate, a temperature detecting means for detecting a 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 urging force adjusting means based on the temperature detected by the temperature detecting means and the target value set by the temperature setting means. Mixing temperature 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.

The mixing temperature control device of the present invention further comprises a high-temperature fluid side valve seat and a low-temperature fluid side valve seat provided opposite to the movable valve body, and reduces the proportion of the high-temperature fluid as the temperature of the mixed fluid rises. A temperature-sensing body spring for urging the movable valve body in the direction, a bias spring for urging in the opposite direction, and a manual drive unit for adjusting the mixing temperature by changing the urging force of at least one of the two springs. Electric biasing force adjusting means, 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, temperature detecting means for detecting the temperature of the mixed fluid, A temperature setting means for setting a target value, and an electronic control means for controlling the electric urging force adjusting means based on the temperature detected by the temperature detection means and the target value set by the temperature setting means, One valve It has a function of automatically adjusting the mixing temperature of the fluid and a function of adjusting the total flow rate.It has an excellent temperature control function without temperature deviation due to water pressure fluctuations and changes in the set temperature. A usable 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 opposite to the movable valve body, respectively, reduce the ratio of the high-temperature fluid as the temperature of the mixed fluid rises. A temperature-sensing body spring for urging the movable valve body in the direction, a bias spring for urging in the opposite direction, and a manual drive unit for adjusting the mixing temperature by changing the urging force of at least one of the two springs. Target urging 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 of the fluid, temperature detecting means for detecting the temperature of the mixed fluid, and the mixed fluid A temperature setting unit that sets a target value of the temperature; and an electronic control unit that controls the electric urging force adjustment unit based on the temperature detected by the temperature detection unit and the target value set by the temperature setting unit. Dynamic bias adjustment The step is provided with a moisture-proof means in which the motor is covered with a resin also serving as a manual drive unit, and varies the spring biasing force of the movable valve body by either electrically driving the motor or manually driving the manual drive unit. With a configuration that includes manual electric and electric drive means, it has a function of automatically adjusting the mixing temperature of the fluid and a function of adjusting the overall flow rate with one valve body, and can be used in humid places, in the event of a power failure and failure of electronic control means etc. Can also provide a manually usable mixing temperature control device.

[Brief description of the 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 sectional view showing the configuration of the mixing temperature control device in a valve closed state.

FIG. 3 is a characteristic diagram of the generated urging force at each displacement and temperature 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-sensitive body spring of a mixed temperature control device according to 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 a fifth and a sixth embodiment of the present invention.

FIG. 7 is a configuration 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 sensitive body spring 82 Energizing force adjusting means 86 Valve seat position adjusting means 94 Shear strain regulating means 95 Electric urging force adjusting means 96 Temperature detection Means 97 Temperature setting means 98 Electronic control means 99 Electric urging force adjusting means 100 Manual driving unit 101 Moisture proof means 102 Manual electric dual-purpose driving means

Claims (6)

(57) [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 provided opposite to the movable valve body, and a temperature of the mixed fluid. A temperature-sensing body spring for urging the movable valve body in a direction to decrease the ratio of the high-temperature fluid with the rise, 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: urging force adjusting means for changing the force to adjust the mixing temperature; and valve seat position adjusting means for changing the position of at least one of the two valve seats and adjusting 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 provided respectively opposite to the movable valve body, and a temperature of the mixed fluid. A temperature-sensing body spring for urging the movable valve body in a direction to decrease the ratio of the high-temperature fluid with the rise, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs Urging force adjusting means for adjusting the mixing temperature by varying the force, shear strain regulating means for regulating the shear strain γ of the thermosensitive body spring, and the fluid by varying at least one of the two valve seat positions. And a valve seat position adjusting means for adjusting the flow rate of the mixture. 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 provided opposite to the movable valve body, respectively, and a storage / use temperature range. A temperature-sensitive body spring that is made of a shape memory alloy that undergoes a phase transformation of an R (Rhombohedral) phase or a parent phase, and urges the movable valve body in a direction to decrease a ratio of a high-temperature fluid with a rise in the temperature of the mixed fluid. A bias spring for urging the movable valve body in the opposite direction, 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: a valve seat position adjusting means for changing a position of at least one of the two valve seats and adjusting a flow rate of the fluid. 4. A movable valve body for adjusting a mixing ratio between a high-temperature fluid and a low-temperature fluid, a high-temperature fluid-side valve seat and a low-temperature fluid-side valve seat provided respectively opposite to the movable valve body, and a temperature of the mixed fluid. A temperature-sensing body spring for urging the movable valve body in a direction to decrease the ratio of the high-temperature fluid with the rise, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs An electric urging force adjusting unit that adjusts a mixing temperature by varying an energizing force; a valve seat position adjusting unit that adjusts a valve seat position of at least one of the two valve seats to adjust a flow rate of the fluid; Temperature detection means for detecting the temperature, temperature setting means for setting a target value of the mixed fluid temperature,
A mixed temperature control device comprising: electronic control means for controlling the electric biasing force adjusting means based on the temperature detected by the temperature detecting means and a target value set by the temperature setting means. 5. A movable valve body for adjusting a mixing ratio between a high-temperature fluid and a low-temperature fluid, a high-temperature fluid-side valve seat and a low-temperature fluid-side valve seat respectively provided opposite to the movable valve body, and a temperature of the mixed fluid. A temperature-sensing body spring for urging the movable valve body in a direction to decrease the ratio of the high-temperature fluid with the rise, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs An electric urging force adjusting unit having a manual driving unit for changing an energizing force and adjusting a mixing temperature; and a valve seat position adjusting unit for changing a position of at least one of the two valve seats and adjusting a flow rate of the fluid. Temperature detection means for detecting the temperature of the mixed fluid, temperature setting means for setting a target value of the mixed fluid temperature, the temperature detected by the temperature detection means and the 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 provided respectively opposite to the movable valve body, and a temperature of the mixed fluid. A temperature-sensing body spring for urging the movable valve body in a direction to decrease the ratio of the high-temperature fluid with the rise, a bias spring for urging the movable valve body in the opposite direction, and at least one of the two springs An electric urging force adjusting unit having a manual driving unit for changing an energizing force and adjusting a mixing temperature; and a valve seat position adjusting unit for changing a position of at least one of the two valve seats and adjusting a flow rate of the fluid. Temperature detection means for detecting the temperature of the mixed fluid, temperature setting means for setting a target value of the mixed fluid temperature, the temperature detected by the temperature detection means and the target value set by the temperature setting means Based on the electrical attachment Electronic control means for controlling a force adjusting means, the electric biasing force adjusting means includes a moisture-proof means in which a motor is covered with a resin serving also as the manual driving section, and the motor is electrically driven or the manual driving is performed. A mixing temperature control device comprising: a manual electric / electrical drive means for varying a spring biasing force of the movable valve body by either driving the unit manually.