KR20030080954A - Automatic Valve - Google Patents

Abstract

PURPOSE: An automatic opening/closing valve is provided to minimize the malfunction caused by the deposition of scale and the corrosion of a spring by using an indirect temperature detecting method. CONSTITUTION: A T-shaped valve body has an opening/closing port. An inlet(211) and an outlet(212) are formed at both ends of the valve body. A manual control handle(220) is installed at the top of the valve body, and controls the temperature of heating water. An opening/closing rod has a protrusion, and is fixed to the inner top of the manual control handle. The lower end of the opening/closing rod is fixed to the top of a temperature detector. A returning unit(260) is installed between the outer circumference of the temperature detector and the inner circumference of the valve body, and returns the temperature detector upward.

Description

Automatic Valve {Automatic Valve}

The present invention relates to an automatic shut-off valve for automatically controlling the flow of the fluid by sensing the temperature of the fluid flowing in the cooling or heating pipes, in particular by indirect by the conductor without direct contact between the fluid and the shape memory spring by the temperature reduction means It relates to an automatic opening and closing valve to allow the opening and closing of the valve by the temperature reduction.

The water-temperature-sensing automatic open / close valve, which is a technical field of the present invention, is mainly installed in a cooling / heating pipe of a general home or an office, and detects the temperature of a fluid flowing inside the pipe and flows the fluid according to the elevation of the water temperature. The shape memory spring is operated inside the valve body to control the temperature.

The automatic opening and closing valve equipped with such a shape memory spring can greatly influence the energy saving effect due to the convenience of automatically adjusting the flow of fluid according to the temperature of the fluid in the pipe and the advantage of providing a uniform temperature at all times. However, the automatic opening and closing valve with a shape memory spring which has been put to practical use has various problems.

As an example, the inventor of the present invention has been devised a "automatic opening and closing valve for cooling and heating" of No. 20-0230314, registered Korean Utility Model Publication,

1, the upper end portion is coupled to the inner side of the manual adjustment knob 24 and the lower coupling portion 23 of the manual adjustment knob 24 and the lower coupling member 23 of the valve body 20. The opening and closing rod 30 screwed to the inner bottom is installed vertically, the lower end of the opening and closing rod 30, the cone-shaped opening and closing member of the upper and lower narrow so as to block between the inlet 21 side and the outlet 22 side of the fluid ( 35 is fitted, and a corresponding spring 36 having a constant elastic force is fitted to the lower outer periphery of the opening and closing rod 30 around the opening and closing member 35, and the top opening and closing rod of the opening and closing member 35 is fitted. At the outer periphery of 30, two cooling and heating shape memory springs 32 and 34 are fitted up and down. When the opening and closing member 35 is closed, the inner passage 42 of the inlet port 21 side in the central portion of the valve body 20 is maintained at the lower end and the open state of the opening and closing member 35, the discharge port 22 side The inner passage 43 is blocked from the inside of the valve body, and the downward protrusion 40 on the inlet 21 side of which the outer wall is inclined so as to act as a guide when the opening / closing member 35 moves up and down at the inner central portion of the valve body. ) And the outlet 22 side upward protrusion 41 has a structure and operation principle, respectively.

However, in the case of the conventional invention configured as described above, since the shape memory spring and the corresponding spring are always exposed to the fluid, impurities such as scale are stuck in the shape memory spring and the corresponding spring, and the shape itself is corroded to form the shape. Lesions such as the memory spring and the corresponding spring could not be made smoothly in normal elongation.

The present invention has been made to solve the above-mentioned disadvantages of the conventional automatic opening and closing valve, the automatic opening and closing valve according to the present invention is designed in an indirect temperature reduction method to prevent the failure and malfunction caused by the precipitation of the scale and the corrosion of the spring The purpose of the present invention is to provide a self-closing valve that can be minimized.

1 is a cross-sectional view of the automatic opening and closing valve according to the prior art

Figure 2a is an exploded perspective view showing a first embodiment of the automatic opening and closing valve according to the present invention

Fig. 2B is a sectional view showing an open state of the automatic switching valve according to the first embodiment.

Fig. 2C is a sectional view showing the closed state of the automatic switching valve according to the first embodiment.

3A is an exploded cross-sectional view of a second embodiment of an automatic shut off valve according to the present invention;

Fig. 3B is a sectional view showing an open state of the automatic opening and closing valve according to the second embodiment.

3C is a cross-sectional view showing a closed state of the automatic switching valve according to the second embodiment.

※ Explanation of drawing code about main parts of drawing

100, 200: automatic opening and closing valve 110, 210: valve body

120, 220: manual adjustment knob 130, 230: temperature reduction means

131, 231: shape memory spring 132, 232: sealed groove

133, 233: sealing means 137, 237: protruding jaw

139, 239: accommodating part 150, 250: opening and closing rod

227: level control unit 240: guide means

160, 260: return means

As a feature of the present invention for achieving the above object,

At both ends, the inlet and the outlet are formed to face each other, and the T-shaped valve body having an opening and closing opening at the top, and a manual adjustment knob for controlling the water temperature of the oil at the upper end of the valve body are installed, and the upper end is the inside of the manual adjustment knob. A guide means having an opening rod fixed to an upper end and having a lower end received inside the temperature reducing means, a guide part for guiding the outer circumferential surface of the temperature reducing means, and positioned on an outer circumferential surface of the guide means and the temperature reducing means, An automatic opening and closing valve comprising a return means to be inflated with,

The temperature reducing means has an accommodating part therein, and a shape memory spring is seated in the longitudinal direction in the accommodating part;

The outer circumferential surface of the temperature reducing means and the inner circumferential surface of the opening and closing device are in close contact with each other so that the upper portion of the sealing means to be sealed from the oil.

In addition, the valve body has an oil barrier that protrudes a predetermined height upwards on a predetermined surface between the inlet and the outlet; A provision provided vertically through a predetermined portion between the inlet and the outlet; A cover fastened to the supply; It is preferable to further include,

The sealing means is preferably an O-ring or a bellows.

The temperature sensing means has a cup-shaped longitudinal section in which the upper side is opened and the remaining surface is closed, a projecting jaw protruding outwardly in the transverse direction on the upper side, and a lowering side in which the recessed portion and the convex portion are continuous, A recessed groove having a concave shape along the circumference of the outer circumferential surface and an opening / closing member on the closed bottom surface,

It has a cup-shaped longitudinal cross-section with the upper side open and the other side occluded, and has one or more concave-shaped recessed grooves along the circumference of the outer circumference, and the lower side has a temperature-sensitive portion where the recessed portion and the iron portion are continuous, and the closed lower portion It has a lower body having an opening and closing member on the surface, the lower side is open and the remaining surface is occluded, and has a through-hole perforated in a predetermined size longitudinal direction on the center of the occluded upper surface, the upper side of the opening in the transverse direction An upper body having a protruding jaw extended by a length of the peripheral edge; The O-ring of the sealing means is inserted into the sealing groove, it is preferable to have a configuration in which the outer peripheral surface of the lower end of the upper body is fastened to the inner peripheral surface of the upper end of the lower body by a predetermined length.

The opening and closing rod is a rod-shaped body, the support piece protruding in a transverse direction at a predetermined portion on the upper end, a groove in which the central portion of the support piece is a predetermined radius cut along the circumference of the outer peripheral surface, and the sealing means of the sealing means O-ring has a configuration that is inserted,

Has a support piece protruding the same or smaller than the size of the through hole on a predetermined portion of the outer peripheral surface of the rod-shaped body, and has an upper rod and a lower rod, respectively located above and below the support piece, the lower end of the shape memory spring It is preferred to have a configuration that enters inside and the upper surface of the shape memory spring is supported on the bottom surface of the support piece.

The guide means has a cylindrical shape of which the upper and lower sides are open, and a predetermined portion of the outer circumferential surface interacts with the inner circumferential surface of the opening and closing port; It is preferable to include the temperature sensing means therein, but having the guide portion projecting inward to have an inner circumferential surface having the same shape and size as the outer circumferential surface of the temperature reducing means, and a recess sectioned along a circumference of the lower side.

The bellows of the sealing means is a rubber material, the upper side is opened and the remaining surface is closed to have a space therein, the central portion of the through hole having a radius equal to or less than the outer peripheral surface of the temperature reducing means, and forming the through hole The first convex portion protruding toward the through hole in the same shape as the sealed groove among the temperature reducing means, and the upper inner wall surface forming the space portion protrude toward the space portion in the same shape as the groove among the guide means. A second convex portion; It is preferable that the first convex portion has a configuration in which the second convex portion is forcibly fitted to the concave groove, respectively.

The valve body further has a supporting jaw formed by extending a predetermined radius upward from a predetermined position of the inner circumference of the opening and closing port;

The return means is a compression coil, located between the inner periphery of the projecting jaw and the support jaw and the opening and closing of the temperature reducing means,

It is preferable to be located between the upper end surface of the guide portion and the protruding jaw of the temperature reducing means.

The opening and closing member is made of silicon,

It is preferable that the material of the said temperature reduction means is aluminum or copper,

It is preferable that a predetermined amount of silicon oil be inserted into the accommodation portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, these embodiments are merely for illustrative purposes, and the technical spirit of the present invention is not limited thereto.

Figure 2a is an exploded perspective view showing a first embodiment of the automatic opening and closing valve according to the present invention, Figures 2b and 2c is a cross-sectional view showing an open state and a closed state of the automatic opening and closing valve according to the first embodiment. .

Looking at Figures 2a to 2c,

The valve body 110 is formed in a T shape and formed at the left and right ends of the inlet 111 and the outlet 112 through which the fluid is discharged are horizontally opposed to each other, and the opening and closing hole 113 is upward. Is formed, the manual adjustment knob 120 that is capable of adjusting the water temperature of the heating water to the top of the valve body 110 is installed, the upper end of the upper rod 152 is fixed to the inner top of the manual adjustment knob 120 And the lower end of the lower rod 153 penetrates the through hole 136 of the temperature reduction means 130, and the lower surface of the support piece 151 presses the upper surface of the shape memory spring 131, and the lower rod 153. The opening and closing rod 150 which enters into the shape memory spring 131 and supports the shape memory spring 131 so as not to be inclined or deformed, and an outer circumferential surface of the temperature reduction means 130 and the valve body 110. Is located between the inner circumferential surface of the temperature-reducing means 130 upwards Return has a structure of the means 160 for.

More specifically, between the inlet 111 and the outlet 112, the oil stopper 115 protrudes upwards, and the small provision 116 vertically penetrated from the inner lower surface of the inlet 111 to the bottom and The cover 117 is screwed to the provided 116 is provided. The oil stopper 115 may be configured in a circular or polygonal or protruding piece, and a sealing member such as an O-ring so as to closely bond the supply 116 and the cover 117 ( 118 is fastened to the outer periphery of the provision 116. In addition, since the inner wall surface of the opening and closing 113 is extended to have a larger diameter at a predetermined height to extend to the upper end of the valve body 110, the support jaw 114 is formed at the site where different diameters meet.

In addition, it is inserted into the opening and closing 113, consisting of the upper body 138 and the lower body 135, the built-in shape memory spring 131 therein, the upper side is open and the other end of the cup-shaped longitudinal section occluded It has a lower body 135, which is opened and closed on the bottom surface by the fastening means 200, such as a screw, and the lower surface, the lower side is open and the remaining surface is occluded, predetermined on the center of the closed upper surface It has a through hole 136 perforated in the longitudinal direction, the upper side has a top body 138 having a protruding jaw 137 protruding in the transverse direction by the length of the inner periphery of the opening and closing 113 The outer circumferential edge of the lower end of the upper body 138 is inserted into and coupled to the inner circumferential edge of the upper end of the lower body 135 by a predetermined length.

In addition, a plurality of sealing grooves 132 cut at a predetermined portion are formed along the outer circumference of the lower body 135, and the sealing means 133, which is an O-ring, is sealed to the sealing groove 132. By being inserted into the groove 132, the inner wall surface of the opening and closing 113 and the temperature reduction means 130 can be tightly coupled to have a configuration to prevent the inflow of fluid.

It is supported between the protruding jaw 137 of the upper body 138 and the support jaw 114 of the valve body 110 and surrounds the outer periphery of the temperature reduction means 130 and between the inner wall surface of the opening and closing port 113. The return means 160 positioned at the upper surface of the thermostat device 130 may be inflated upwards, and the thermal reduction means 130 may be energized upward when the shape memory spring 131 contracts due to a temperature change of the fluid. The opening and closing member 134 is separated from the oil blocking jaw 115 to allow the flow of the fluid.

Preferably, the lower body 135 is made of a material having a predetermined hardness so as not to have a shape deformation while having high thermal conductivity such as aluminum or copper, and to increase the surface area of the lower body 135 as much as possible. Surface area that can be, for example, by forming a plurality of protrusions such as the concave convex portion and the convex portion surface area or the heat sink, so that the temperature of the fluid can be quickly conducted to the shape memory spring (131). In addition, it is also possible to maximize the thermal conductivity by inserting a material such as silicon oil having a high thermal conductivity into the receiving portions (139,239) formed in the temperature reduction means 130.

The opening and closing rod 150 is a rod-shaped body and has a support piece 151 projecting the same or smaller than the size of the through hole 136 on a predetermined portion of the outer circumferential surface of the rod-shaped body, and the lower rod of the opening and closing rod 150 is The upper portion of the shape memory spring 131 is supported and coupled to the lower surface of the support piece 151 through the through hole 136 and enters the inside of the shape memory spring 131.

The U-shaped snap ring 155 is fastened to an upper surface of the upper rod of the opening / closing rod 150, and screw holes 156 are formed at predetermined positions on both sides of the snap ring 155, such as screws on the inner surface of the manual handle. It is screwed by the same fastening means 200. In addition, the adjustment spring 170 is inserted into the upper rod 152 and supported on the upper surface of the support piece 151 and the inner surface of the manual adjustment handle 120.

The manual adjustment knob 120, the upper cap 121 and the lower cap 122 and the level plate 123 for displaying the level on the outer peripheral surface of the upper and lower caps (121, 122) is located.

The upper cap 121 is a stepped engaging jaw 124 having a predetermined height radially therein is protruded continuously from step 0 to step 10 to step 10 from step 0. The lower cap 122 is formed in the same shape to be engaged with the stepped locking jaw (124).

The stepped latching jaw 124 as described above is formed in an asymmetrical mutual shape to form a length of the upward direction is longer than the length of the downward direction is a structure that prevents the set temperature value is deformed by the displacement due to the sliding level value It is made up of. In addition, at a predetermined position on the upper surface of the upper cap 121, a level through hole 125 is formed to display the corresponding level displayed on the level plate 123, and correspond to the screw hole 156 of the snap ring 155. By having a fastening hole 126 where it is, by matching the screw hole 156 of the snap ring 155 fastened to the top rod 152 of the opening and closing rod 150 to be fixed by a fastening means 200 such as screws It has a configuration to prevent the separation of the opening and closing rod 150.

Figure 3a is an exploded cross-sectional view of a second embodiment of the automatic open and close valve according to the present invention, Figures 3b and 3c is a cross-sectional view showing an open state and a closed state of the automatic open and close valve according to the second embodiment.

Looking at Figures 3a to 3c,

The valve body 210 is formed in a T shape and formed at the left and right ends of the inlet 211 through which the fluid is introduced and the outlet 212 through which the inflowed fluid is discharged horizontally to face each other, and the opening and closing hole 213 is upward. It is formed, and the manual adjustment knob 220 that is capable of adjusting the water temperature of the fluid to the top of the valve body 210 is installed, the upper surface of the support piece 251 is on the inner upper end surface of the manual adjustment knob 220 It is supported by the opening and closing rod 250, the lower end of the support rod 253 enters the interior of the shape memory spring 231, the temperature reduction means in a state that the shape memory spring 231 and the opening and closing rod 250 is fastened ( The shape memory spring 231 is supported on the closed bottom surface of the inner circumferential surface of the temperature reducing means 230 which is inserted into the receiving part 239 of the receiving part 239 and forms the receiving part 239. Located between the outer circumferential surface and the inner circumferential surface of the opening and closing port 213 Stage 230 and the position guide means 240 has a guide portion 241 for guiding to be the up-and-down motion.

Located between the upper end surface of the guide portion 241 formed on the inner circumferential surface of the guide means 240 and the protruding jaw 237 protruding from the upper side surface portion of the temperature reduction means 230, the temperature reduction means 230 ) Is made up of a return means 260 which is a compression coil which makes the upper body elastic.

In addition, it has a through hole (not shown) in the center so as to contain the opening and closing rod 250 / temperature reduction means 230 therein, the space portion (not shown) is formed in the upper portion of the guide means 240 Level control unit 227 is located, the outer cap 228 is located above, the temperature reducing means 230 and the guide means 240 by being coupled to the fluid of the temperature reducing means 230 It has a configuration of the sealing means 233 to block the entry into the interior of the receiving portion (239).

More specifically, between the inlet 211 and the outlet 212, the oil stopper 215 protrudes upwards, and the small provision 216 vertically penetrated from the inner lower surface of the inlet 211 to the bottom and The cover 217 is screwed to the provided 216 is provided. The oil barrier 215 may be formed in a circular or polygonal or protruding piece, and a sealing member such as an O-ring so as to closely bond the small provision 216 and the cover 217 ( Not shown) is fastened to the outer periphery of the provision (216).

In addition, it is inserted into the opening and closing port 213, the shape memory spring 231 is built in the receiving portion 239, the upper side is open and has a cup-shaped longitudinal cross-section closed the other side and the opening and closing member ( 234 is inserted into an interference fit and adhesively fastened with an adhesive (not shown) so that a tight fastening can be made to the fastening surface.

In addition, the upper side has a protruding jaw 237 which protrudes in the transverse direction, and the lower end side portion has a temperature sensing portion 236 formed of a corrugated pipe with the recessed portion 236a and the convex portion 236b along the circumference of the outer circumferential surface. The sealing groove 232 is formed by cutting a predetermined portion along the circumference of the outer periphery of the temperature-sensitive portion 236.

It has the same or larger radius as the protruding jaw 237 of the temperature reducing means 230, has the same inner peripheral edge as the outer peripheral surface of the temperature reducing means 230, and has the guide portion 241 partially protruded into the inside, The guide means 240 having a groove 243 in which the lower end portion of the outer circumferential surface is cut in a predetermined portion is provided, and is located between the inner circumferential surface of the opening and closing hole 213 and the temperature reduction means 230.

In addition, it is a rubber material, the upper side is open and the remaining surface is closed and has a space portion 233d therein, the central portion has a through hole 233a having a radius equal to or smaller than the outer circumferential surface of the temperature reduction means 230, The first convex portion 233b protruding toward the through hole 233a in the same shape as that of the sealing groove 232 of the temperature reducing means 230 is formed in the through hole 233a, and the space portion ( In the sealing means 233 having the second convex portion 233c protruding toward 233d, the first convex portion 233b is in the sealing groove 232 and the second convex portion 233c is in the recess 243. ) To prevent the inflow of the fluid by the interference fit and has a configuration and fastening method to effectively achieve indirect temperature.

The return means 260 elastically radiates the temperature reduction means 230 upwards to elastically radiate the temperature reduction means 230 upward when the shape memory spring 231 contracts due to a temperature change of the fluid. The opening and closing member 234 is separated from the oil stopper 215 to open the valve body 213.

Preferably, the temperature reduction means 230 is made of a material having a predetermined hardness with high thermal conductivity, such as aluminum or copper, and low in shape deformation, and increases the surface area of the temperature reduction portion 236 as much as possible. By forming a plurality of protrusions (not shown), such as a heat sink so that the temperature of the fluid can be quickly conducted to the shape memory spring (231). In addition, it is also possible to maximize the thermal conductivity by inserting a material having a high thermal conductivity into the shape memory spring 231 is placed in the receiving portion 239 of the temperature reduction means 230.

The opening and closing rod 250 is a rod-shaped body, and the support piece 251 protruding a predetermined portion in the transverse direction at the upper end thereof, and a central portion of the support piece 251 has a predetermined radius cut along the circumference of its outer circumferential surface. The groove 254 and the O-ring 256 is inserted into the groove 254.

The O-ring 256 is configured to prevent displacement by the elastic force of the shape memory spring 231 by pressing the inner circumferential surface of the temperature reduction means 230 and the support piece 251.

The manual adjustment knob 220 has a through hole 227a in the center, and has a radial stepped jaw 224 continuously protruded from step 0 to step 10 and step 10 on one side on one side. The upper cap 221 made of teeth and the lower cap 222 of the same shape as the upper cap 221 is coupled to each other, the fitting member through hole penetrating the central portion of the upper cap 221 in the transverse direction ( And a level adjusting section 227 having 227b).

In addition, the level plate 223 of a circular shape which is seated on the upper end surface of the upper cap 221, successively 0 to 10, 10 to 0 indicating the level by being displaced by the level adjusting unit 227 Is located.

It has a space (not shown) in the interior to contain the level control unit 227, the vertically perforated level to the position corresponding to the level of the level plate 223 is located on the top surface An outer cap having a mouth hole 225, a fitting member through hole 228a penetrating laterally at a position corresponding to the fitting member through hole 227b, and a holding part 228b configured to be gripped by a user ( 228 is provided.

The level adjusting part 227 is inserted into the outer cap 228, and the pin-shaped fitting member 229 fastened through the fitting member through holes 227b and 228a is connected to the upper cap 221. It is fastened to be fixed to the outer cap 228.

The stepped latching jaw 224 is formed to be asymmetric with each other and the length of the upward direction is formed longer than the length of the downward direction is a structure that prevents the set temperature value is deformed by being displaced due to the sliding, The level is configured not to be displaced from 0 to 10 steps or 10 to 0 steps.

As described above, since the automatic opening and closing valve according to the present invention is configured to detect the temperature of the fluid by heat conduction, it is not exposed to the fluid, thereby preventing malfunction, failure and corrosion due to scale and oxidation of each species. It works.

Claims (13)

At both ends, the inlet and the outlet are formed to face each other, and the T-shaped valve body having an opening and closing opening at the top, and a manual adjustment knob for controlling the water temperature of the oil at the upper end of the valve body are installed, and the upper end is the inside of the manual adjustment knob. A guide means having an opening rod fixed to an upper end and having a lower end received inside the temperature reducing means, a guide part for guiding the outer circumferential surface of the temperature reducing means, and positioned on an outer circumferential surface of the guide means and the temperature reducing means, An automatic opening and closing valve comprising a return means to be inflated with, The temperature reducing means has an accommodating part therein, and a shape memory spring is seated in the longitudinal direction in the accommodating part; And an outer opening of the temperature reducing means and an inner circumferential surface of the opening / closing device in close contact with each other so that an upper part thereof may be closed from the oil. The method of claim 1, The valve body is provided with an oil blocking projection protruding a predetermined height upward on a predetermined surface between the inlet and the outlet; A provision provided vertically through a predetermined portion between the inlet and the outlet; A cover fastened to the supply; Automatic opening and closing valve, characterized in that it further comprises. The method of claim 1, The sealing means is an automatic opening and closing valve, characterized in that the O-ring or bellows. The method of claim 1, The temperature sensing means has a cup-shaped longitudinal section in which the upper side is opened and the remaining surface is closed, a projecting jaw protruding outwardly in the transverse direction on the upper side, and a lowering side in which the recessed portion and the convex portion are continuous, Automatic opening and closing valve characterized in that the groove is provided with a sealing groove of the concave shape along the circumference of the outer circumferential surface and the opening and closing member on the closed lower surface. The method of claim 1, The temperature sensing means has a cup-shaped longitudinal section in which the upper side is opened and the other side is occluded, and has one or more concave-shaped grooves along the circumference of the outer circumferential surface, and the lower end side is a temperature sensing part in which recesses and convex parts are continuously formed. And, the lower body having an opening and closing member on the closed bottom surface, The lower side is opened and the other side is occluded, and has a through-hole perforated in a predetermined size in the longitudinal direction on the center of the occluded upper surface, and has a protruding jaw protruding the upper side extending by the length of the inner circumference of the opening and closing in the transverse direction. It has an upper body to make; The O-ring of the sealing means is inserted into the sealing groove, the outer peripheral surface of the lower end of the upper body is inserted into the inner circumferential surface of the upper end of the lower body by a predetermined length, automatic closing valve. The method according to any one of claims 1 to 4, The opening and closing rod is a rod-shaped body, the support piece protruding in a transverse direction at a predetermined portion on the upper end, a groove in which the central portion of the support piece is a predetermined radius cut along the circumference of the outer peripheral surface, and the sealing means of the sealing means Automatic opening and closing valve, characterized in that the O-ring is inserted. The method according to any one of claims 1 to 3 or 5, The opening and closing rod is a rod-shaped body, has a base piece protruding the same or smaller than the size of the through hole on a predetermined portion of the outer peripheral surface of the rod-shaped body, and has an upper rod and a lower rod, respectively located above and below the base piece; , And the lower end enters into the shape memory spring, and the top and bottom surfaces of the shape memory spring are supported by the bottom surface of the support piece. The method of claim 1, The guide means has a cylindrical shape of which the upper and lower sides are open, and a predetermined portion of the outer circumferential surface interacts with the inner circumferential surface of the opening and closing port; The guide part including the temperature sensing means therein and protruding therein to have an inner circumferential surface having the same shape and size as the outer circumferential surface of the temperature reducing means; Having a recess sectioned along a circumference of the lower side surface; Automatic opening and closing valve characterized in that. The method according to claim 1 to claim 4 or 8, The bellows of the sealing means, Is a rubber material, the upper side is open and the remaining surface is closed and has a space therein, the central portion is a through hole having a radius equal to or less than the outer peripheral surface of the temperature reduction means, A first convex portion protruding toward the through hole in a lower end portion constituting the through hole in the same shape as the sealed groove among the temperature reducing means; An upper inner wall surface constituting the space portion includes a second convex portion protruding toward the space portion in the same shape as the recess of the guide means; And the first convex portion is coupled to the sealing groove, and the second convex portion is forcibly fitted to the concave groove, respectively. The method according to any one of claims 1 to 4 or 8, The return means is a compression coil, the automatic opening and closing valve, characterized in that located between the upper end surface of the guide portion and the protruding jaw of the temperature reducing means. The method according to any one of claims 1 to 3 or 5, The valve body further has a supporting jaw formed by extending a predetermined radius upward from a predetermined position of the inner circumference of the opening and closing port; The return means is a compression coil, the automatic opening and closing valve, characterized in that located between the inner periphery of the protruding jaw and the supporting jaw and the opening and closing of the temperature reducing means. The method according to any one of claims 1 to 5, The opening and closing member is made of silicon, The material for the temperature reduction means is an automatic opening and closing valve, characterized in that the aluminum or copper. The method according to any one of claims 1 to 5, The opening and closing valve, characterized in that a predetermined amount of silicone oil is inserted into the receiving portion.