KR20060128358A - Valve for controlling flow quantity - Google Patents

Abstract

A valve for controlling a flow rate is provided to maintain consistency of operation even when the valve is used for a long time. A valve for controlling a flow rate includes a valve housing(10), a fixing pipe(20), a hollow moving pipe, a temperature responsive spring(40), and a compression spring(50). The valve housing has an inlet port(11) and an outlet port(12). The fixing pipe is fixed in the valve housing, and has a discharge port in communication with a discharge port of the valve housing. The hollow moving pipe is inserted into the fixing pipe to be slidably supported along a longitudinal direction of the fixing pipe. The temperature responsive spring is formed of a shape memory alloy to be extended when it is in contact with a temperature higher than a first temperature and shrunk when it is in contact with a temperature lower than a second temperature. The compression spring is installed at a rear end of the moving pipe.

Description

Valve for controlling flow quantity

1 is a view schematically showing the structure of a boiler and hot water supply pipe in a modern ondol structure house.

2 is a view schematically showing the configuration of a conventional valve device used in the hot water supply pipe of FIG.

3 is a schematic cross-sectional view of an open state of the flow control valve according to the preferred embodiment of the present invention.

4 is a schematic cross-sectional view of a state in which the flow control valve shown in FIG. 3 is blocked.

FIG. 5 is a schematic perspective view of an essential part of the flow control valve shown in FIG.

FIG. 6 is a schematic cross-sectional view taken along the line VI-VI of FIG. 3.

7 is a schematic cross-sectional view of a flow control valve according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10 ... valve housing 11 ... inlet

12 ... outlet 20 ... fixed tube

21 ... outlet 22 ... through hole

30 ... moving pipe 31 ... pipe main body

32 ... inlet 33 ... drain

40 ... temperature sensitive spring 50 ... compression spring

60 ... guide ring 62 ... through hole

70 ... guide rod 81 ... first test ball

82 ... 2nd test hole 91 ... Pressure plate

92 ... connecting rod 94 ... handle

M ... motor A ... axis of rotation

100 ... flow control valve

The present invention is a flow rate control valve for controlling the flow rate of the heating water according to the water temperature, and more particularly, it is possible to maintain a constant temperature in the room, and relates to an economical flow rate control valve made of a very simple structure.

In Korean Ondol-style houses, the warming of the ondol which forms the room is heated by heating the lower part of the floor, and the warming of the lower part is convection to the upper part, thereby heating the room. In the modern ondol structure, pipe piping is installed at the bottom of the room, and the hot water heated by the boiler is circulated through the pipe while the floor is heated by heat transfer between the hot water and the floor.

1 is a view schematically showing the structure of a boiler and hot water supply pipe in a modern ondol structure house. In FIG. 1, a piping structure for heating three rooms R1, R2, and R3, and a boiler 1, a water supply part 2, and a return part 3 are illustrated. This is a schematic drawing for explaining the ondol structure and circulation of hot water.

As shown in Figure 1, the modern Korean ondol structure is a heating structure, such as a boiler (1) for heating hot water, a circulation structure that is bent and installed a plurality of times to increase the heat dissipation area on the bottom of the room bottom and the water can be circulated It comprises a pipe 4 consisting of, a water supply unit 2 for supplying hot water from the boiler 1 to the pipe 4 and a return unit 3 for returning the water circulated in the pipe (4) again.

The water supply unit 2 and the return unit 3 is provided with a water supply valve 2a and a return valve 3a to adjust the flow rate of hot water supplied to the pipe 4 at the bottom of the room or returned from the pipe.

In general, the valve device used in the water supply valve or the return valve as described above controls the flow of the fluid by operating the valve seat through the valve stem and the handle, and flows through the valve seat using a thermostat device The temperature of the fluid can be controlled remotely.

2 is a view schematically showing the configuration of a general valve device. Conventional valve devices for maintaining the temperature of the fluid passing through the valve at a selected temperature are used in the water supply and return valves 2a and 3a shown in FIG. Such a valve device, as shown in Figure 2, is provided on the stem (6) of the valve 5, the fluid sensor 7 for sensing the temperature of the fluid passing through the valve chamber, and the fluid sensor ( 7) connected to the signal transmission member 8 for transmitting the detection signal and the fluid passage of the valve in accordance with the temperature signal of the fluid applied through the signal transmission member 8 to maintain the fluid at the set temperature It consists of the temperature control apparatus 9 for making it.

The valve device having the above-described configuration is smoothly operated when first installed, but after a predetermined period of time, electronic equipment such as the sensor 7 is deteriorated, or operation is not performed due to external environmental factors. An error has occurred. In addition, the conventional valve device is not only complicated in configuration as described above, but also expensive, and has a problem in that maintenance is inconvenient when a failure occurs.

The present invention is to solve the above problems, not only can maintain a constant temperature in the room, but also made of a very simple mechanical structure, even in the long-term use of the flow control improved structure to maintain the consistency of operation The purpose is to provide a valve.

Flow control valve according to the present invention for achieving the above object is made of a hollow valve housing having an inlet and outlet of the heating water at both ends; A fixed tube installed to be fixed to the inside of the valve housing and having a discharge hole formed in a hollow shape and communicating with an outlet of the valve housing; The tube is inserted into the fixed tube and is slidably supported along the longitudinal direction of the fixed tube and has a drainage tube formed at a rear end thereof so as to communicate with the discharge port, and heating water introduced through the inlet of the valve housing. A hollow moving tube having an inlet formed on an outer circumferential surface of the tube body to be introduced into the main body; It is installed at the tip of the moving tube to elastically bias the moving tube in one direction, and is stretched in contact with heating water having a temperature higher than or equal to a set first temperature to increase elastic force and contacting heating water having a temperature lower than or equal to a second set temperature. A temperature sensitive spring made of a shape memory alloy to shrink and reduce elastic force; And a compression spring installed at the rear end of the mobile pipe to elastically bias the mobile pipe in the other direction, the elastic force of which is smaller than the elastic force at the time of extension of the temperature-sensitive spring and larger than the elastic force at the time of contraction. .

According to the present invention, the guide hole disposed in the central portion, and a plurality of through holes disposed along the circumferential direction of the guide hole so that the heating water can be introduced, the guide ring fitted to the inner peripheral surface of the inlet of the valve housing, It is fixed to the front end of the moving tube, and further provided along the longitudinal direction of the moving tube is inserted into the guide hole of the guide ring; The temperature sensitive spring is fitted to the guide rod so that the front end is supported by the guide ring and the rear end is supported by the moving tube.

In addition, according to the present invention, it is preferable that the water inlet formed in the moving tube becomes larger in area from the front end to the rear end in the longitudinal direction of the moving tube.

In addition, according to the present invention, the valve housing on both sides of the valve housing between the front end of the fixed tube so that the temperature of the heating water that does not flow into the inlet of the moving tube and the temperature of the heating water introduced into the inlet. The first test hole and the second test hole penetrating between the inner and outer peripheral surfaces of the formed respectively, it is preferable to further include a closure member for blocking the first test hole and the second test hole respectively.

In addition, according to the invention, the compression spring is installed in the interior of the fixed tube, the front end is supported by the moving tube and the rear end is preferably supported by the fixed tube.

In addition, according to the present invention, it is preferable to further include a compression means for compressing the compression spring by compression.

In addition, according to the present invention, the compression means, the female screw portion formed on the inner peripheral surface of the valve housing, is disposed in the interior of the fixed tube, and disposed inside the fixed tube to support the rear end of the compression spring, the length of the fixed tube A pressure plate capable of reciprocating along a direction, and a male thread portion formed on an outer circumferential surface thereof, is screwed to the female screw portion, a connecting rod fixed to the pressure plate, and a handle portion fixed to the connecting rod and disposed outside the valve housing. It is preferable to comprise.

In addition, according to the present invention, the connecting rod is preferably connected to the motor capable of forward and reverse rotation is rotated by this motor.

Hereinafter, with reference to the accompanying drawings, it will be described in more detail with respect to the flow control valve according to an embodiment of the present invention.

3 is a schematic cross-sectional view of the flow control valve is opened in accordance with a preferred embodiment of the present invention, Figure 4 is a schematic cross-sectional view of the blocked flow control valve shown in Figure 3, Figure 5 is shown in FIG. Is a schematic perspective view of the main part of the flow control valve, and FIG. 6 is a schematic sectional view taken along the line VI-VI of FIG. 3.

3 to 6, the flow control valve 100 according to the preferred embodiment of the present invention includes a valve housing 10, a fixed tube 20, a moving tube 30, a temperature sensitive spring 40, and a compression spring ( 50).

In the heating system for heating the room, the heating water is heated in the boiler. The heating water heated in the boiler passes through the pipe arranged in a zigzag form in the room, and the heat of the heating water is transferred to the room while the pipe is heated. The heating water passing through the room enters the boiler through the discharge pipe (p), heats up, and repeats the same cycle.

The valve housing 10 is installed in the discharge pipe (p). That is, the valve housing 10 is fixed to the discharge pipe p by fixing means such as a coupling (c) at the point where the heating water passing through the room is introduced into the boiler again. The valve housing 10 is open at both ends thereof, so that both ends of the valve housing 10 are formed with an inlet 11 and an outlet 12, respectively. The inlet 11 is connected to the discharge pipe (p) from the room, the outlet 12 is connected to the discharge pipe (p) entering the boiler. In addition, the valve housing 10 has a hollow shape, and a flow path 13 through which the heating water passes is formed between the inlet 11 and the outlet 12. In this embodiment, the flow passage 13 is bent in a '-' shape.

The fixing tube 20 is installed to be fixed inside the valve housing 10. The fixing tube 20 also has a hollow shape, and a space portion is formed therein. The tip of the fixed tube 20 is open, and a discharge port 21 penetrating the fixed tube 20 is provided at the center lower portion thereof. The outlet 21 communicates with the outlet 12 of the valve housing 10. In addition, a through hole 22 is formed at the center of the fixing tube 20.

The movable pipe 30 includes a pipe main body 31 and a drain hole 33 in which an inlet 32 is formed. The tube body 31 of the movable tube 30 is fitted to the fixed tube 20, and is supported to be slidable along the longitudinal direction of the fixed tube 20. The tube body 31 is formed in a hollow form a space in which heating water flows is formed therein. A water inlet 33 is formed on the outer peripheral surface of the tip of the tube body 31. The inlet 33 is for introducing the heating water introduced through the inlet 11 of the valve housing 10 into the space inside the tube body 31 of the mobile tube 30, the tube body 31 A plurality is arranged along the circumferential direction of. Each of the inlets 33 is formed in a substantially triangular shape, and the inlet area through which the heating water can be introduced gradually increases from the front end to the rear end along the longitudinal direction of the moving tube 30. On the other hand, the rear end of the tube main body 31 of the moving tube 30 is opened is provided with a drain 33. The drain 32 is in communication with the outlet 21 of the fixed tube 20, the heating water flowing through the inlet 32 to the outlet 21 of the fixed tube 20 through the drain 32. Discharged. Moreover, the flange part 34 is provided in the rear end part of the pipe main body 31 of this moving pipe 30. As shown in FIG. The flange portion 34 is for preventing the tube body 31 of the moving tube 30 from being separated from the fixed tube 20, and is formed to protrude along the radial direction of the tube body 31 and the tube body ( It is arranged in a ring along the circumferential direction of 31). When the pipe main body 31 is slid in the direction in which the inlet 11 of the valve housing 10 is formed, the flange portion 34 is caught by the locking jaw 27 of the fixed pipe 20 to move the position by sliding. This is limited. When the moving tube 30 is slid toward the inlet 11 of the valve housing 10, the inlet 32 is exposed to the outside of the fixed tube 20 to the state in which the heating water can be introduced, the moving tube 30 is When the water slides in the other direction, the water inlet 32 is inserted into the inside of the fixing tube 20 to be in a state in which the heating water cannot be introduced. Between the inner circumferential surface of the fixed tube 20 and the outer circumferential surface of the moving tube 30 is sealed by a sealing member (not shown) such as an O-ring, so that the heating water cannot flow therebetween.

A guide rod 70 is provided at the tip of the moving tube 30. The guide rod 70 is for guiding the sliding of the moving tube 30, is located inside the valve housing 10, and is formed long along the longitudinal direction of the moving tube (30). In this embodiment, the guide rod 70 is formed integrally with the moving tube (30).

On the other hand, the inlet 11 of the valve housing 10 is provided with a guide ring 60. More specifically, the guide ring 60 is formed in a circular shape, is fitted to the inner peripheral surface of the inlet port 11 of the valve housing 10. A guide hole 61 penetrating the guide ring 60 is formed in the center portion of the guide ring 60. The guide rod 70 is fitted into the guide hole 61. In addition, a plurality of through holes 62 are disposed in the guide ring 60 along the circumferential direction of the guide hole 61. The through hole 62 is for penetrating the heating water coming into the inlet 11 of the valve housing 10 into the valve housing 10, and is formed through the guide ring 60.

The temperature sensitive spring 40 is to bias the moving tube 30 in one direction, that is, the inlet 32 of the moving tube 30 is immersed in the direction of the fixed tube 20, the moving tube 30 Is installed at the tip of the More specifically, the temperature sensitive spring 40 is fitted to the guide rod 70 so that its tip is supported by the guide ring 60 and the rear end is supported by the tip of the moving tube 30. The temperature sensitive spring 40 is made of a shape memory alloy as a known member, and can be expanded and contracted according to temperature change.

Shape Memory Alloy (SMA) is an alloy that remembers its original shape and returns to its original form when it reaches a certain temperature even if the shape is changed. Shape memory alloy has various characteristics, the most representative of which is shape memory effect and superelastic effect. The shape memory effect refers to a characteristic that when a shape is memorized at a constant temperature, when the shape is deformed at a temperature lower than the shape memory temperature, the shape memory effect returns to its original form when heated to the formation recovery temperature. A superelastic effect is a property that is increased by giving a deformation and returns to its original shape when the force is removed. The shape-retaining alloy also exhibits a rubber-like elasticity at room temperature when the transformation point (變態 點) is properly controlled by changing the chemical composition. According to the characteristics, the shape memory alloy is deformed at room temperature and deformed at room temperature, and then heated. Repeated cooling can be categorized into two-way shape memory alloy which repeatedly shows two shapes, and two-way shape memory alloy having two-way shape effect and cooling at lower temperature below room temperature. Can be.

If the spring is made of the bidirectional shape memory alloy among the shape memory alloys having the above characteristics, the expansion and contraction of the shape memory alloy is automatically performed by heating and cooling. When installed in a pipe through which a fluid flows and applied to a valve that controls the flow of the fluid, it can be automatically controlled by the temperature of the flowing fluid without the use of electricity. Therefore, the heating piping of individual houses and apartments, as well as the radiators of various buildings, etc. It can be installed in the pipe to achieve energy saving and uniform temperature control effect.

That is, in this embodiment, the temperature sensitive spring 40 is stretched when it comes in contact with the set first temperature, for example, heating water of 70 ° C. or more, and contracts when it comes in contact with heating water of the set second temperature, for example 50 ° C. or less. When the temperature is in contact with the heating water having a temperature higher than the set first temperature, the temperature sensitive spring 40 is extended to increase its elastic force, and when in contact with the heating water having a temperature lower than the set second temperature, the temperature sensitive spring 40 Is contracted and its elastic force decreases. The first temperature and the second temperature may be set differently depending on how much the room temperature is maintained.

The compression spring 50 is for elastically biasing the moving tube 30 in another direction, that is, in a direction in which the inlet 11 of the valve housing 10 is formed, and is installed at the rear end of the moving tube 30. In more detail, the compression spring 50 is disposed inside the fixed tube 20, the front end of which is supported by the rear end of the movable tube 30, and the rear end of the compression spring 50 is supported by the rear end of the fixed tube 20. . As this compression spring 50, the elastic force corresponds to the temperature sensitive spring 40 is used. That is, the elastic force of the compression spring 50 is smaller than the elastic force when the temperature sensitive spring 40 is extended in contact with the heating water of the first temperature or more, and the temperature sensitive spring 40 is less than or equal to the second temperature. It is larger than the elastic force when it contracts in contact with heating water. Therefore, when the heating water of the first temperature or more is introduced, the elastic biasing force of the temperature sensitive spring 40 is greater than the elastic biasing force of the compression spring 50 so that the movable tube 30 slides toward the compression spring 50. The inlet 32 of the moving tube 30 is opened. However, when the heating water below the second temperature is introduced, the elastic biasing force of the compression spring 50 is greater than the elastic biasing force of the temperature sensitive spring 40 so that the moving tube 30 slides toward the temperature sensitive spring 40. The inlet 32 of the moving tube 30 is closed.

In the valve housing 10, a first test hole 81 and a second test hole 82 spaced apart from each other are disposed. The first test hole 81 and the second test hole 82 are formed to penetrate between the inner and outer peripheral surfaces of the valve housing 10, respectively. The first test hole 81 is for measuring the temperature of the heating water that does not flow into the inlet 32 of the mobile tube 30, the second test hole 82 is the inlet 320 of the mobile tube 30 In order to measure the temperature of the introduced heating water, the first test hole 81 and the second test hole 82 are disposed on both sides of the fixed tube 20 with the tip end therebetween. Plug members 83 and 84 are coupled to the test holes 81 and 82 to open and close the balls 81 and the second test balls 82, respectively.

As described above, opening and closing the flow path of the heating water in the flow control valve 100 according to the present invention is due to the difference in the elastic force of the temperature sensitive spring 40 and the compression spring 50, the compression spring (50) ) Is determined by how compressed the compression spring 50 is. Compression springs with the same modulus of elasticity also increase the elastic force when compressing a lot through pressurization and decrease the elastic force when loosely pressurized.

In the flow control valve 100 according to the present invention to control the degree of compression of the compression spring 50, that is, pressurize and compress the compression spring 50 to increase the elastic force or to loosen the pressure to reduce the elastic force Compression means is provided.

The compression means has a pressing plate 91. The pressing plate 91 is disposed inside the fixing tube 20, more specifically, at the rear end of the compression spring 50 to support the rear end of the compression spring 50. The pressing plate 91 is to adjust the degree of compression of the compression spring 50 is reciprocating along the longitudinal direction of the fixed tube (20). The compression spring 50 is compressed when the pressing plate 91 moves in one direction, that is, toward the front end of the fixed tube 20, and when moved in the other direction, that is, when the pressure plate 91 moves toward the rear end of the fixed tube 20. ) Is loosened.

The pressure plate 91 is connected to the connecting rod 92. The front end of the connecting rod 92 is fixed to the pressure plate 91 and the rear end extends outside the valve housing 10. A male screw portion 93 is formed on an outer circumferential surface of the connecting rod 92, and the connecting rod 92 is a female screw portion formed on one side of the valve housing 10, and more specifically, on the rear inner peripheral surface of the fixed tube 20. Screwed with 19). In this way, the male threaded portion 93 of the connecting rod 92 and the female threaded portion 19 of the valve housing 10 are screwed together, and when the connecting rod 92 is rotated in one direction, the pressing plate 91 is pressed into the compression spring ( 50 is pressurized, and if the connecting rod 92 is rotated in the other direction, the pressing plate 91 is to decompress the compression spring (50).

In order to facilitate the rotation of the connecting rod 92, the handle 94 is attached to the rear end of the connecting rod 92. Reference numeral 18 which is not described is a cover member covering the rear end of the valve housing 10.

  Hereinafter, a use example of the flow control valve 100 according to the preferred embodiment of the present invention will be described.

In an ondol system consisting of a pipe connected from a boiler to a boiler and zigzag passing through the room and a pipe passing through the room to the boiler again, the pipe (p) passing through the room and then entering the boiler is provided in the preferred embodiment of the present invention. The flow control valve 100 is installed by a fixing means such as a coupling (c). At this time, the first temperature at which the temperature-sensitive spring 40 is to be extended and the second temperature at which the temperature is to be compressed are set in advance to store the shape. In addition, the elastic force of the compression spring 50 corresponding to the temperature sensitive spring 40 is adjusted. In other words, the elastic force of the compression spring 50 is adjusted such that the temperature of the compression spring 40 is smaller than the elastic bias force at the time of extension and greater than the elastic bias force at the time of contraction. Specifically, by rotating the handle 94 in one direction or the other direction, the pressure plate 91 adjusts the elastic force of the compression spring (50) by pressing and releasing the compression spring (50). When the installation is complete, turn on the boiler.

The heating water heated to a constant temperature in the boiler is deprived of heat while passing through the room, and flows into the flow control valve 100 according to the present invention. If the room is sufficiently heated, the heating water deprives a lot of heat while passing through the room. Therefore, it is discharged while maintaining a relatively hot temperature, and when passing through a room that is not heated, the heating water loses a lot of heat and is discharged at a relatively low temperature. This means that if the heating water with high temperature flows into the valve, the room is sufficiently heated, so there is no need to circulate the heating water continuously. If the heating water with low temperature flows into the valve, heating continues. Since the heating water must be circulated continuously.

This action is performed by the temperature sensitive spring 40 and the compression spring 50 of the present invention. That is, when the temperature sensitive spring 40 is introduced with heating water of a predetermined first temperature or more, the temperature sensitive spring 40 is extended and its elastic bias force is greater than the elastic bias force of the compression spring 50. The temperature sensitive spring 40 biases the moving tube 30 in one direction. Accordingly, the moving pipe 30 is moved in one direction, and as shown in FIG. 4, the inlet 32 is immersed into the fixing pipe 20 to close the flow path of the heating water.

When the flow path is closed in this way, the circulation of the heating water is stopped. When a predetermined time elapses in this state, the temperature of the heating water that does not flow into the flow control valve 100 and more specifically, the fixed pipe 20 falls. When the temperature is lowered below the set second temperature, the temperature sensitive spring 40 is contracted and its elastic force is lowered. When the elastic force of the temperature sensitive spring 40 is lowered, the elastic force of the compression spring 50 becomes more dominant, thereby biasing the movable tube 30 in the other direction, and eventually, the inlet 32 of the movable tube 30 is again. Open. Accordingly, the heating water is circulated again, so that the temperature of the room can be maintained evenly in a certain range.

On the other hand, the user through the first test hole 81 and the second test hole 82, the temperature of the heating water not introduced into the moving tube 30 and the temperature of the heating water introduced into the moving tube 30 It can be measured.

Until now, the handle 94 is described and illustrated as the user directly rotates, but is not necessarily limited thereto, and may be rotated through a driving means such as a motor. An embodiment of this type is shown in FIG. 7. 7 is a schematic cross-sectional view of a flow control valve according to another embodiment of the present invention. Referring to Figure 7, the flow control valve according to the other embodiment all other components are completely the same as the flow control valve shown in Figures 3 to 5. However, further comprising a motor (M) for rotating the handle portion 94, the rotation shaft (A) of the motor (M) is coupled to the center of the handle portion 94 when the motor (M) is rotated This knob 94 can be rotated. This motor (M) is capable of forward and reverse rotation to rotate the handle portion 94 in one direction or the other direction.

Although the present invention has been described with reference to the embodiments illustrated in the accompanying drawings, this is merely exemplary, and a person of ordinary skill in the art may understand that various modifications and equivalent other embodiments are possible. There will be. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

As described above, the flow control valve according to the present invention has the advantage that it can not only control the flow rate of the heating water through a very simple mechanical configuration, but also maintain the temperature of the room to be heated through a certain range.

Claims (8)

A valve housing having a hollow shape and having inlets and outlets of heating water at both ends thereof; A fixed tube installed to be fixed to the inside of the valve housing and having a discharge hole formed in a hollow shape and communicating with an outlet of the valve housing; The tube is inserted into the fixed tube and is slidably supported along the longitudinal direction of the fixed tube and has a drainage tube formed at a rear end thereof so as to communicate with the discharge port, and heating water introduced through the inlet of the valve housing. A hollow moving tube having an inlet formed on an outer circumferential surface of the tube body to be introduced into the main body; It is installed at the tip of the moving tube to elastically bias the moving tube in one direction, and is stretched in contact with heating water having a temperature higher than or equal to a set first temperature to increase elastic force and contacting heating water having a temperature lower than or equal to a second set temperature. A temperature sensitive spring made of a shape memory alloy to shrink and reduce elastic force; And It is installed at the rear end of the moving tube to elastically bias the moving tube in the other direction, the elastic force is a compression spring smaller than the elastic force at the time of extension of the temperature sensitive spring and larger than the elastic force at the time of contraction; Control valve. The method of claim 1, A guide hole disposed in the center portion and a plurality of through holes arranged along the circumferential direction of the guide hole so that the heating water can flow therein, and a guide ring fitted to the inner circumferential surface of the inlet of the valve housing; A guide rod fixed to the front end of the moving tube and disposed long along the longitudinal direction of the moving tube and fitted into a guide hole of the guide ring; The temperature sensitive spring is fitted to the guide rod, the front end is supported by the guide ring and the rear end is a flow control valve, characterized in that supported by the moving tube. The method of claim 1, The water inlet formed in the moving tube is a flow control valve, characterized in that the area is increased from the front end to the rear end in the longitudinal direction of the moving tube. The method of claim 1, Both sides of the valve housing penetrate between the inner and outer circumferential surfaces of the valve housing so that the temperature of the heating water that does not flow into the inlet of the moving tube and the temperature of the heating water that flows into the inlet are interposed. The first test ball and the second test ball are formed, And a stopper member for blocking the first test hole and the second test hole, respectively. The method of claim 1, The compression spring is installed in the fixed tube, the front end is supported by the moving tube and the rear end is a flow control valve, characterized in that supported by the fixed tube. The method of claim 1, And a compression means for pressurizing and compressing the compression spring. The method of claim 6, The compression means, A female screw portion formed on an inner circumferential surface of the valve housing; A pressure plate disposed inside the fixed tube to support the rear end of the compression spring, and capable of reciprocating along the longitudinal direction of the fixed tube; A connecting rod formed on the outer circumferential surface thereof and screwed to the female screw portion and fixed to the pressure plate; Fixed to the connecting rod, characterized in that the flow control valve comprising a handle portion disposed on the outside of the valve housing. The method of claim 7, wherein The connecting rod is connected to the motor capable of forward and reverse rotation flow control valve, characterized in that rotated by this motor.

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