KR101108063B1 - Thermostatic Valve Using Shape Memory Alloy Spring - Google Patents

Abstract

According to the present invention, by installing a temperature control valve using a shape memory alloy spring in a heating pipe of a private house, apartment, or office, the opening of the valve pipe is automatically opened and closed by adjusting the opening area of the pipe according to the heating water temperature. It relates to a thermostatic valve using a shape memory alloy spring that can automatically adjust the temperature.
The thermostatic valve using the shape memory alloy spring according to the present invention has a heating water inlet and a heating water outlet are formed on both sides, and separated by a blocking wall inside the body, the poppet insertion hole is inserted into the shaft of the poppet at the top The body is provided with a blocking hole insertion hole is inserted into the block opening of the poppet in the lower portion, the body is formed in the control chamber is provided with an inlet hole in which the heating water flows on one side; A flow path formed between the lower part of the adjustment chamber and the body to allow heating water to flow; A poppet formed with a support piece protruding from the shaft middle portion, and having a blocking opening for opening and closing the flow path at a lower portion thereof; An SMA spring elastically supporting an upper end of a support piece of the poppet and an upper inner wall of the adjustment chamber; And a spring for elastically supporting the lower end of the support piece of the poppet and the inner wall of the adjustment chamber.

Description

Thermostatic control valve with shape memory alloy spring {Temperature control valve with shape memory alloy spring}

According to the present invention, by installing a temperature control valve using a shape memory alloy spring in a heating pipe of a private house, apartment, or office, the opening of the valve pipe is automatically opened and closed by adjusting the opening area of the pipe according to the heating water temperature. It relates to a thermostatic valve using a shape memory alloy spring that can automatically adjust the temperature.

Shape memory alloys (SMAs) are alloys that return to their original shape when heated with boiling water, even if a processed object is broken or deformed. Nickel-titanium alloy, copper Zinc-aluminum alloys have been put to practical use, and are widely used in fighter aircraft, artificial satellites, and medical applications.

1 and 2 is a view showing a thermostatic valve using a conventional SMA spring.

In the conventional thermostatic valve shown in FIG. 1, the SMA spring 12 and the general spring 13, which are deformed into a stored shape according to a set water temperature range, are elastically coupled to the gate rod 11, and the header 20 The control operation for each temperature is manually controlled by elevating the regulator 15 by the positive and reverse rotation, and the gate is located at the bottom center of the valve body 1 in which the heating water inlet 2 and the outlet 3 are formed. The lower end of the rod 11 is assembled and fixed, and the SMA spring 12 and the gate and the spring 13 are inserted in this order so as to be mutually supported as the upper pedestal 14.

Gran, such a thermostatic valve is because the water pressure of the heating water flowing in the pipe is directly applied to the lower end of the gate 5, the hydraulic pressure is applied in the direction corresponding to the lowering operation when the gate 5 is lowered, the gate ( The lowering force of 5), that is, the transformation force of the shape memory alloy, is not strong enough to be proportional to the hydraulic pressure, and thus has a fatal defect that the opening and closing operation of the valve is impossible because a smooth lowering operation of the gate cannot be expected.

Therefore, in order to solve such a problem, the Korean patent registration No. 0278106 is configured to control the flow rate proportionally to the temperature difference acting in the valve chamber and to adjust the opening and closing range of the gate according to the set temperature range as shown in FIG. Proposed through.

That is, the thermostatic valve configured as shown in FIG. 2 is provided with an inflow water bypass induction pipe 2 having an upper end opened between the heating water inlet 20 of the valve body 10 and the outlet 3 communicating therewith. A diaphragm 6 having a pressure inlet 6a and a pressure differential adjusting hole 7 are stored in the open upper end of the bypass induction pipe 4. ) And the cover 10 on the upper portion of the gate 5 provided with the flow control hole 8 and the rising control jaw 9 to pressurize the outer periphery of the diaphragm 6 to support it. Heating water circulation hole (10a) is perforated in the outer periphery of the top plate 10, the lower end of the elevating rod 11 penetrates in the center so that the lower end of the elevating rod (11) is the pressure differential adjusting hole (7) of the gate (5). ) Is configured to open and close the spring, and the high temperature type SMA spring 12 and the general spring 13 responding to the high temperature of the winter heating water are supported by the spring. It is fitted to the elevating rod 11 so as to be elastic between the base 14 and the adjuster 15, the low-temperature type SMA spring 17 is provided on the upper portion of the elevating rod 11 accommodated in the adjuster 15 It is configured to respond to the temperature of the heating water.

However, the thermostatic valve configured as described above has a large number of parts, which is not only very complicated in construction, but also has a large volume, and is difficult to utilize due to malfunction due to internal contamination and influence of fluid pressure. there is a problem.

In addition, when the valve is closed, there is no way to relieve the pressure inside the pipe, which causes a lot of noise.The function of the shape memory alloy makes it difficult to overcome the strong fluid pressure in the pipe of a large building. There is a problem such as a fatal defect that cannot be opened and closed itself.

The present invention has been made to solve the above problems, the configuration is simple and can significantly reduce the production cost and product cost, even if the strong fluid pressure acts on the piping of large buildings, such as opening and closing of the thermostatic valve It is an object of the present invention to provide a thermostatic valve using a shape memory alloy spring that operates smoothly.

In order to achieve the above object, the present invention is provided with a heating water inlet and a heating water outlet on both sides, which are separated by a blocking wall inside the body, and provided with a poppet insertion hole into which the shaft of the poppet is inserted in the upper portion, A body having a blocking hole insertion hole into which the blocking hole of the poppet is inserted, and an adjusting chamber having an inlet hole through which heating water flows in one side; A flow path formed between the lower part of the adjustment chamber and the body to which heating water flows; A poppet formed with a support piece protruding from the shaft middle portion, and having a blocking opening for opening and closing the flow path at a lower portion thereof; An SMA spring for elastically supporting the upper end of the support piece of the poppet and the upper part of the adjustment chamber; And a spring for elastically supporting the lower end of the support piece and the lower part of the adjustment chamber of the poppet.

At this time, when the poppet is lowered, the breaker seating portion of the body in contact with the blocking hole is drilled, and a pressure compensation tank is formed at the lower portion thereof, and a hole formed at one side of the shaft of the poppet is connected to the pressure compensation tank through the tank inflow path inside the shaft. Characterized in that configured to communicate.

In addition, the pressure compensation tank is characterized in that it is provided with an openable cap.

In addition, the upper portion of the poppet is screwed with the body is characterized in that it further comprises a clearance adjustment screw for adjusting the rise distance of the poppet.

In addition, the heating water inlet side of the body is characterized in that the mouth wall is protruded spaced apart from the control room a predetermined distance.

The automatic temperature control valve using the shape memory alloy spring of the present invention configured as described above can reduce the production cost and product cost significantly due to its simple configuration, and automatic temperature control even if a strong fluid pressure acts on the pipe such as a large building. Opening and closing operation of the valve is smooth.

Figure 3 is a view showing a state in which the heating water flow is blocked in the temperature control valve according to an embodiment of the present invention.
4 is a view showing a state in which the heating water flow is opened in the temperature control valve according to an embodiment of the present invention.
5 is a view showing a temperature control valve according to another embodiment of the present invention.
Figure 6 is a view showing a state in which the heating water flow is blocked in the temperature control valve according to another embodiment of the present invention.
7 is a view showing a state in which the heating water flow is opened in the temperature control valve according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In one embodiment of the present invention, as shown in Figure 3, the heating water inlet 102 and the heating water outlet 103 is formed on both sides, is formed by the blocking wall 115 in the body 101 is separated The upper portion of the poppet insertion hole 113 is inserted into the shaft 121 of the poppet 120, the lower portion of the insertion hole 113 is inserted into the block 123 of the poppet 120 is provided A body 101 having an adjustment chamber 110 having an inlet hole 111 into which heating water is introduced; A flow passage 116 formed between the lower portion of the adjusting chamber 110 and the body 101 to allow heating water to flow; A poppet (120) formed with a support piece (122) protruding from the middle of the shaft (121), and a blocking opening (123) for opening and closing the flow path (116) at a lower portion thereof; An SMA spring 126 elastically supporting an upper end of the support piece 122 of the poppet 120 and an upper inner wall of the adjustment chamber 110; And a spring 127 elastically supporting the lower end of the support piece 122 of the poppet 120 and the lower inner wall of the adjustment chamber 110.

On both sides of the body 101, a heating water inlet 102 into which heating water is introduced, and a heating water outlet 103 to which heating water is supplied to heating pipes such as buildings and apartments, respectively. In addition, an adjustment chamber 110 separated from the body 101 flow path 116 is formed inside the body 101 by a blocking wall 115, and on one side (heating water inlet side) of the adjustment chamber 110. An inlet hole 111 is formed to allow a part of the heating water to flow into the control room 110.

The control room 110 is formed to be separated from the inner space of the body 101 in the body 101, is formed so as to be spaced apart from the inner wall of the lower portion of the body 101 by a predetermined interval so that the flow path 116 through which the heating water flows is formed. 110 is formed.

The poppet 120 is installed inside the adjustment chamber 110, and the poppet 120 is inserted into the shaft 121 of the poppet 120 in the upper portion of the adjustment chamber 110 so that the poppet 120 can move up and down in the adjustment chamber 110. Insertion hole 112 is formed, the lower portion of the adjustment chamber 110 is formed with a block opening insertion hole 113 is inserted into the block 123 of the poppet 120.

The poppet 120 has a block 123 having a triangular cross-sectional shape at a lower end thereof, and a support plate 122 having a protruding plate shape is formed in the middle of the poppet 120 shaft 121.

The support piece 122 of the poppet 120 is configured to elastically support the coil-shaped SMA spring (shape suppression spring) 126 and the general spring 127, as shown in Figure 3 SMA spring 126 is supported The upper end of the piece 122 and the upper inner wall of the adjustment chamber 110 is elastically supported, and the general coil spring 127 is configured to elastically support the lower inner wall of the lower side of the support piece 122 and the adjusting chamber 110.

The SMA spring 126 is a spring formed of a shape memory alloy, and is characterized by an increase in elastic modulus at or above a predetermined temperature by using a shape memory alloy having a characteristic of returning to its original shape in a predetermined temperature or more.

And, the upper portion of the poppet 120 is screwed with the body 101 is configured to further include a clearance adjustment screw 105 for adjusting the rise distance of the poppet 120. The clearance adjusting screw 105 is installed in the upper portion of the poppet 120 to move up and down as shown in FIG. 3 to adjust the distance that the poppet 120 is raised and lower the flow rate of the fluid flowing through the flow path 116 of the valve 100 Adjust

The clearance adjustment screw 105 is screwed to the outer wall of the body 101 protruding into the adjustment chamber 110 to rotate the clearance adjustment screw 105 to adjust the lifting interval of the poppet 120. Alternatively, the fixing plate 104 may be coupled to the protruding body 101 as shown in FIG. 3, and the clearance adjusting screw 105 may be coupled to the fixing plate 104.

The operation of one embodiment of the present invention configured as described above will be described in detail.

In the state in which the thermostatic valve 100 of the present invention blocks the heating water flow to the heating pipe, as shown in FIG. 3, the poppet 120 descends to block the flow passage 116 of the poppet 120. It is a state. In this state, since the elastic modulus of the SMA spring 126 is larger than the elastic modulus of the spring 127, the SMA spring 126 compresses the support piece 122 of the poppet 120 and the poppet 120 descends to block the opening. 123 cuts off the flow path 116.

In this state, a part of the heating water is introduced into the control room 110 through the inlet hole 111 of the control room 110 through the heating water inlet 102, but as time passes, the heating water in the control room 110 is cooled down. When the elastic modulus of the SMA spring 126 is lowered and the elastic modulus is lower than that of the spring 127 below the support piece 122, the poppet 120 is formed as shown in FIG. 4 by the difference in elastic force between the two springs 126 and 127. ) Rises, and the flow path 116 blocked by the blocking hole 123 of the poppet 120 opens as the poppet 120 rises, and the heating water flows to the heating water outlet 103 through the flow path 116. It is discharged and flows to the heating pipe.

At this time, the heating water is not only discharged to the heating water outlet 103 through the flow path 116, but also a portion of the heating water is inserted into the control chamber 110, the inlet hole 111 and the lower control chamber 110 as shown in FIG. It is discharged through the ball 113 to the heating water outlet 103.

As described above, when the heating water flows into the control chamber 110 and the temperature inside the control chamber 110 rises, the SMA spring 126 increases in temperature and the elastic modulus of the SMA spring 126 increases. At the moment when the elastic modulus of 126 becomes higher than the spring 127 coefficient of the lower portion of the support piece 122, the poppet 120 descends to block the flow passage 116 to block the flow of heating water. .

 When the heating water flows in a state in which the heating water is blocked as described above, the heating water inside the control chamber 110 cools and the temperature decreases, thereby decreasing the elastic modulus of the SMA spring 126 from the elastic modulus of the spring 127. As the poppet 120 rises, the heating water flows again.

At this time, by adjusting the interval in which the poppet 120 is raised by the clearance adjusting screw 105 installed on the upper portion of the poppet 120, it is possible to adjust the flow rate of the heating water flowing through the flow path (116).

5 is a view showing a temperature control valve according to another embodiment of the present invention, Figure 6 is a view showing a state in which the heating water flow is blocked in the temperature control valve according to another embodiment of the present invention, Figure 7 Is a view showing a state in which the heating water flow is opened in the temperature control valve according to another embodiment of the present invention.

In another embodiment of the present invention, when the poppet 120 is lowered as shown in FIG. 5, the breaker seating portion 114 of the body 101 contacting the breaker 123 is drilled, and a pressure compensation tank 130 is disposed at a lower portion thereof. Is formed, and the hole 124 formed at one side of the shaft 121 of the poppet 120 is configured to communicate with the pressure compensation tank 130 through the tank inflow passage 125 inside the shaft 121.

At this time, the pressure compensation tank 130 is preferably provided with a cap 131 that can be opened and closed.

Another embodiment of the present invention configured as described above will be described in detail.

Basically, the poppet 120 is moved up and down by the difference in the elastic modulus between the SMA spring 126 and the spring 127 due to the temperature change in the adjusting chamber 110, whereby the blocking port 123 of the poppet 120 flows. Controlling the heating water flow by opening and closing 116 is the same as the embodiment of the present invention.

However, since the heating water supply pressure of a large building, such as a large building and an apartment, is high, the opening and closing operation of the thermostat valve 100 may not be performed smoothly by a high pressure. That is, in a state in which the flow of heating water is blocked as shown in FIG. 3, the heating water of the heating water inlet 102 is introduced into the control room 110 through the inlet 111 of the control room 110, and thus, the blocking port of the poppet 120. (123) Although the pressure is applied to the upper surface, when the heating water supply pressure is high, a problem occurs that the poppet 120 does not rise due to the large pressure of the upper surface of the poppet 120 blocking port 123. .

Another embodiment of the present invention is to solve the problems as described above is to configure the pressure compensation tank 130 in the lower portion of the poppet (120).

As shown in FIG. 6, when the poppet 120 descends to block the heating water flow path 116, a part of the heating water flows into the control room 110 through the inlet hole 111 of the control room 110, and the poppet 120. A portion of the heating water is introduced into the pressure compensation tank 130 through the tank inlet 125 inside the shaft 121 through the hole 124 formed at one side of the shaft 121.

When a portion of the heating water flows into the pressure compensation tank 130 as described above, the heating water supply pressure acts on the bottom surface of the poppet 120 block 123 as shown in FIG. Even though the pressure applied to the lower surface of the block 123 is canceled and the heating water supply pressure is large, the elastic modulus difference between the SMA spring 126 and the spring 127 causes the poppet 120 to be separated as shown in FIG. 7. Ascending movement is performed smoothly so that the heating water flows into the heating pipe.

3 to 7, the mouth wall 106 is formed at the heating water inlet 102 side of the control chamber 110 at a predetermined interval to the flow path 116 through the heating water inlet 102. By lowering the flow rate of the heating water, the poppet 120 is configured to smoothly move up and down, and to prevent noise from occurring during the opening and closing operation of the valve 100.

In addition, when the poppet 120 is lowered, the blocking port 123 is formed when the poppet 120 is lowered by forming a recess fitting part 114 having a groove shape on the inner wall of the body 101 in which the blocking port 123 contacts. It is desirable to configure it to seat in the correct position.

In the above, the thermostatic valve using the shape memory alloy spring according to the present invention has been described.

It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and the equivalent concept shall be construed as being included in the scope of the present invention.

100: valve
101: Body
102: heating water inlet
103: heating water outlet
104: fixed plate
105: play adjusting screw
106: wall
110: control room
111: inlet hole
112: poppet insertion hole
113: block insertion hole
114: breakout seat
115: barrier wall
116: Euro
120: Poppet
121: axis
122: support piece
123: block
124: hole
125: tank inlet
126: SMA spring
127: spring
130: pressure compensation tank
131: cap

Claims (5)

Heating water inlet 102 and heating water outlet 103 is formed on both sides,
Is formed by the blocking wall 115 inside the body 101, the poppet insertion hole 112 is inserted into the shaft 121 of the poppet 120 is provided on the upper, the lower portion of the poppet 120 Block body insertion hole 113 is inserted (123) is provided, the body 101 formed therein the control chamber 110 is provided with an inlet hole 111 is introduced into the heating water on one side;
A flow passage 116 formed between the lower portion of the adjusting chamber 110 and the body 101 to allow heating water to flow;
A poppet (120) formed with a support piece (122) protruding from the middle of the shaft (121), and a blocking opening (123) for opening and closing the flow path (116) at a lower portion thereof;
An SMA spring 126 elastically supporting an upper end of the support piece 122 of the poppet 120 and an upper inner wall of the adjustment chamber 110;
And a spring 127 elastically supporting the lower end of the support piece 122 of the poppet 120 and the lower inner wall of the adjustment chamber 110 so that the poppet 120 contacts the blocking hole 123 when the poppet 120 is lowered. The breaker seating portion 114 of the body 101 is drilled, a pressure compensation tank 130 is formed at the lower portion thereof, and a hole 124 formed at one side of the shaft of the poppet 120 has a tank inside the shaft 121. Automatic temperature control valve using a shape memory alloy spring, characterized in that configured to communicate with the pressure compensation tank 130 through the inlet (125).
delete The method of claim 1,
The pressure compensation tank 130 is an automatic temperature control valve using a shape memory alloy spring, characterized in that it is provided with an openable cap (131).
The method of claim 1,
The upper portion of the poppet 120 is screwed to the body 101 and the automatic temperature control using a shape memory alloy spring, characterized in that it further comprises a clearance adjustment screw 105 for adjusting the rise distance of the poppet 120 valve.

The method of claim 1,
Automatically controlled valve using a shape memory alloy spring, characterized in that the mouth wall 106 is protruded to be spaced apart from the control room 110 and a predetermined distance toward the heating water inlet 102 of the body 101.

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