KR20060002655A - Automatic valve - Google Patents

Abstract

The present invention is provided with an inlet 12 and a discharge port 13 which are opposed to communicate with both ends, the communication flows upward of the tubular body 16 is formed between the inlet 12 and the discharge port 13, the flow rate interruption partition 14 is formed. The valve body 10 formed of the upper support 18 provided with the insertion hole 19 and the flow control intermittent partition 14 of the valve body 10 are intermittently flowed from the inlet 12 to the discharge port 13. Opening and closing device 20 that is opened and closed operation according to the temperature difference of the fluid, and the upper end of the opening and closing device 20 is coupled to the outer periphery of the upper support 18 to manually adjust the size of the flow rate insertion hole (19) In the automatic opening and closing valve (1) formed of a manual control unit 30 that is composed of a handle 32 for closing the upper end of the), the opening and closing device 20 is a disk member for regulating the upper end of the flow control barrier 14 100 and one end of the disk member 100 are impregnated so that the localized portion flows through the flow control barrier 14. A shape memory spring 110 that senses temperature and phase transformation, and the other end of the shape memory spring 110 is fixed to one side and the other end is coupled to the handle 32 of the manual adjustment unit 30 A return spring 130 positioned between the shaft 120 and the guide shaft 120 and the disk member 100 to assist the return of the disk member 100 after phase transformation of the shape memory spring 110. Is formed.

Automatic opening and closing valve, shape memory spring, water temperature sensing valve, on / off valve for both cooling and heating

Description

Opening and closing device of automatic shutoff valve {Automatic Valve}

1 is a cross-sectional view of a conventional water temperature sensing automatic cold / hot shutoff valve;

Figure 2 is a cross-sectional view of a conventional automatic opening and closing valve for cold, heating;

3 is a cross-sectional view of a conventional automatic opening and closing valve;

4 is a sectional view of an automatic shut-off valve according to the present invention;

FIG. 5 is an enlarged view of the 'V' part of FIG. 4.

   5a is a state in which the disk member blocks the flow interrupting bulkhead,

5b is a state diagram in which the shape memory spring is phase-transformed so that the disk member opens the flow rate barrier rib;

6 is a perspective view of a guide shaft according to another embodiment;

7 is a perspective view of a shape memory spring according to another embodiment.

Explanation of reference numerals for the main parts of the drawing

1: Automatic shutoff valve 10: Valve body

20: switchgear 30: manual control unit

100: disk member 102: recessed hole

110: shape memory spring 112: elastic portion

120: guide shaft 122: support step

130: return spring 140: stop ring

The present invention relates to an opening and closing device of an automatic opening and closing valve, and more particularly, there is an opening and closing device configured in the automatic opening and closing valve for automatically opening and closing by sensing the temperature of the fluid flowing along the pipeline, one end of which is impregnated in the disk member and only the localized fluid It is formed by phase memory according to the temperature of the fluid by shape memory spring in direct contact with the fluid, so that the fluid is intermittent. This invention relates to a switchgear of an automatic shut-off valve that has improved its performance and enhanced product competitiveness as it can be used for a long time.

In general, residential areas and warehouses such as homes and buildings are equipped with cooling and heating facilities, and when the temperature falls below or below the set value of the room temperature, the cooling and heating facilities are operated to control energy consumption due to unnecessary operation. A temperature control valve is installed to prevent this.

The temperature control valve for controlling the operation of the cooling and heating facilities according to the set value of the room temperature is divided into a temperature sensing valve and a water temperature sensing valve, and the electronic temperature sensing valve circulates cold and heating water. It is installed at the end of the system, and the temperature controller is installed on the wall about 1 ~ 1.5m away from the floor of the room.They are electrically or mechanically connected while the temperature sensor of the temperature controller senses the temperature and emits the cold. , But the method of controlling the heating water, but the detected temperature range does not depend on the sensed temperature and the reaction time is very slow.

In addition, the latter temperature-sensing valve has a built-in water temperature sensor and a driving mechanism that controls the open area of the valve according to the temperature of the cold and heating water passing through it. By controlling the shape memory alloy spring and proportionally controlling the disk device of the pressure circulation structure, the cooling and cooling water that maintains a constant temperature is always maintained in the pipeline so that the constant room temperature can be maintained. It has the effect of reducing it.

On the other hand, Shape Memory Alloy (SMA), which is a material of shape memory alloy spring, remembers the original shape even when it is deformed by applying force, and it refers to an alloy that restores to its original shape soon after a little heating. When the tissue is unstable at room temperature and exerts an external force of a certain degree, phase transformation occurs in the form of a different atomic arrangement, and the temperature is increased by applying heat to the shape memory alloy where the atomic arrangement is changed. Higher alloys tend to return to their original atomic arrangement.

Referring to the drawings, various conventional water temperature sensing valves using the shape memory alloy are as follows.

Referring to FIG. 1, Korean Patent Application Publication No. 98-84966 (Water Temperature Sensing-type Automatic Cold On / Off Valve Using a Shape-Aging Spring) between an inlet port 8c and an outlet port 8a formed to face the valve body 8 The inner wall surface of the central part of the upper and lower lobes is formed as an inclined surface, and the left and right through holes 8a and 8b are respectively drilled therein, and have a corresponding inclined outer surface and the left and right opening and closing holes are formed in a truncated cone gate. The stopper 5 is inserted into the valve body 8 so as to open and close the flow path while the gate 10 acts on the inclined surface of the valve body 8, and the stopper 5 at a predetermined position of the disc rod 3 on which the gate 10 is elevated. And the upper portion is formed by a polygonal bar to prevent any rotation of the gate 10 and at the same time control the falling position of the gate 10 by the stopper 5 and the disc rod by the header 6. (4) lifting and lowering body (7) assembled to lift up and down The pressure springs (1) and (2) are configured to allow a proportional adjustment of the temperature during the manual lifting and lowering of the gate (10), but the disk shape (4) for heating the shape memory spring (1) and the cooling shape memory spring (2) ) Is combined to ball tan together to control cold and hot water simultaneously for cold and heating.

 However, in the case of the invention configured as described above, a cooling shape memory spring and a heating shape spring for heating are dually installed on the outer circumference of the disc rod so that any one of the two cooling and heating shape memory springs is stretched and stored in the stored temperature range to open and close the gate. When the operation is made, there may be a problem of intertwining with another shape memory spring which is not operated. This causes problems such as a large amount of waste heat due to continuous circulation of high-temperature fluid because the gate is not opened and closed smoothly. have.

To solve the above problems, registered utility model No. 230314 (automatic opening and closing valve for cooling and heating) with reference to Figure 2, the manual adjustment knob 24 and the lower coupling member 23 of the valve body 20 In the inner center, the opening and closing rod 30 is vertically installed, the upper end is coupled to the inner side of the manual adjustment knob 24 and the lower end is screwed to the inner bottom of the lower coupling member 23, the opening and closing of the rod 30 The lower end portion is fitted with a cone-shaped opening member 35 of the upper and lower narrowing so as to block between the inlet 21 side and the outlet 22 side of the fluid, the lower end of the opening and closing rod 30 around the opening and closing member 35 A corresponding spring 36 having a constant elastic force is fitted to the periphery, and two cooling and heating shape memory springs 32 and 34 are disposed on the outer periphery of the upper opening and closing rod 30 of the opening and closing member 35. The fitting is installed.

In addition, when the opening and closing member 35 is closed, the inner flow passage 42 of the inlet port 21 side at the center of the valve body 20 is maintained at the lower end of the opening and closing member 35, and the outlet 22 The inner flow path 43 of the side is blocked from the inside of the valve body 20, and each outer wall is inclined inlet so as to act as a guide when the opening and closing member 35 in the inner central portion of the valve body 20 ( The downward projection 40 on the 21 side and the upward projection 41 on the discharge port 22 have a structure and an operating principle, respectively.

However, in the case of the conventionally proposed invention or design, the shape memory spring and the corresponding spring are always exposed to the fluid, so that the shape memory spring or the corresponding spring surface has an oxide layer and foreign matter contained in the fluid. The shape memory spring has a problem that the reaction time is delayed due to the disturbance of the temperature sensing of the fluid, which prevents unnecessary fluid movement, and the elastic force is lost due to the scale and foreign substances in the corresponding spring. There is a problem falling.

In addition, when the gate, which is an opening and closing means for blocking the opening between the inlet and the outlet, is inclined to the upper and lower straits, when the flow path formed in the corresponding valve body is blocked, the length of the transfer is long, and thus the length of the transfer is long. As the elastic force of the spring also has a size corresponding to its length, the increase in unit cost acted as the volume naturally increased.

In addition, when the gate is opened after closing between the inlet and the outlet by the gate, the gate having a large area due to the inlet pressure of the fluid does not overcome the fluid pressure, and the opening is hindered, resulting in a breakage.

In order to solve the above problems, the present applicant proposed Korean Patent Publication No. 2003-80954 (automatic opening and closing valve) with reference to Figure 3, both ends of the inlet 116 and the outlet 112 are formed to face each other and to the top T-shaped valve body 110 having an opening and closing 113, and a manual adjustment knob 120 capable of adjusting the water temperature of the oil is installed at the upper end of the valve body 110, the upper end is the manual adjustment knob 120 It is fixed to the inner upper end thereof, the opening and closing rod 150, the lower end is received into the interior of the temperature reduction means 130, the guide means having a guide for guiding the outer peripheral surface of the temperature reduction means, the guide means and the temperature reduction means 130 It is located on the outer circumferential surface of the automatic opening and closing valve including a return means 160 for blowing up the temperature reduction means, wherein the temperature reduction means 130 has an accommodating portion therein, the shape memory spring ( 160 species Is mounted to the face, the inner peripheral surface of the outer circumferential surface and the openings 113 of the temperature sensing means 130 is in close contact with the upper seal means is configured to so as to be sealed from the oil.

In addition, the temperature reduction means 130 has an open upper side and has a remaining closed cup-shaped end surface, and a temperature-sensitive portion in which a protruding jaw and a lower end protruding outwardly on the upper side surface and a recessed portion and an iron portion are continuous, The opening and closing member is provided on the closed groove of the yaw shape along the circumference of the outer circumferential surface and the closed bottom surface.

The automatic shut-off valve configured as described above does not expose the shape memory spring or the return spring, which is formed in the temperature reducing means, to the oil flowing from the inlet to the outlet, thereby preventing scale or foreign matters from occurring and preventing malfunction. However, the reaction time is increased by indirect contact method, that is, the shape memory spring is not indirectly indirectly contacted with the temperature of the fluid, ie, the second temperature is sensed by heat exchange with the shape memory spring formed in the temperature reduction means after the first detection. The disadvantage is that it is late.

In addition, as the reaction time is delayed, unnecessary oil flows through the pipeline, resulting in a problem in which energy is wasted and a component manufacturing cost increases due to an increase in components.

In order to solve the above problems, the present invention is a local portion of the shape memory spring, one end of which is impregnated in the disk member opening and closing between the inlet and the earthenware sphere is in direct contact with the fluid to detect the temperature, the fluid flowing It is formed to isolate the driving part composed of the eastern part and the shape memory spring and the return spring, and it is an automatic on-off valve that restores the reliability of the product as the smooth operation is performed by protecting the shape memory spring and the return spring from the scale and foreign substances generated by the fluid. The purpose is to provide a switchgear of.

Another object of the present invention is to provide an opening and closing device of an automatic opening and closing valve which simplifies the structure of the opening and closing device, thereby improving product manufacturing cost and manufacturing assembly, thereby improving overall product competitiveness.

Still another object according to the present invention is to form a plurality of shape memory springs having different phase transformation points according to the temperature difference of the fluid, can be used for cooling or heating, the equipment cost to be installed separately according to cooling and heating It is an object of the present invention to provide an opening and closing device of the automatic on-off valve with reduced back.

The present invention for achieving the above object is provided with a valve body formed of an upper support having an inlet and a discharge port communicated oppositely at both ends, and the insertion hole communicated upwardly of the pipe body is formed between the inlet and the discharge port is formed with a flow rate interruption partition wall. And an opening / closing device which opens and closes according to the temperature difference of the fluid flowing from the inlet to the outlet by intermittently intercepting the flow rate barrier rib of the valve body, and the upper end of the opening / closing device is coupled to the upper circumference of the upper support to manually adjust the magnitude of the flow rate In the automatic opening and closing valve formed of a manual adjustment portion is coupled to the handle is configured to close the upper end of the insertion hole, the opening and closing device is a disk member for regulating the upper end of the flow interrupting partition wall, the end of the disk member is impregnated with a local part Phase memory by sensing the temperature of the fluid flowing in the flow interrupting bulkhead A guide shaft in which the spring and the other end of the shape memory spring are fixed to one side and the other end is coupled to the handle of the manual adjustment part, and the disk member after the phase transformation of the shape memory spring located between the guide shaft and the disk member. It is formed by a return spring to help return.

The disk member according to the present invention has a cylindrical bottom surface at the end of the recessed hole having a certain depth to the center of the top end of the flow control barrier to open the local portion of the shape memory spring, and has an elastic force at the outer periphery of the cylinder The end of the elastic wing piece is preferably formed to be coupled to the insertion hole of the upper support to prevent the fluid from flowing upward of the elastic wing piece.

The disk member according to the present invention is preferably formed of silicon which is soft and has an elastic force and a closing force.

The shape memory spring according to the present invention is preferably formed so that one end is impregnated in the disk member so that the local part is in direct contact with the fluid and the other end is fixed to one end of the guide shaft, except for the elastic part of the bent portion in the shape of the jaw.

The shape memory spring according to the present invention is preferably formed with at least one or more different transformations depending on the fluid temperature.

Shape memory spring according to the present invention is coupled to two different transformation points, one of which is a phase transformation at a high temperature of 20 ~ 40 ℃, the other is preferably formed to be a phase transformation at a low temperature of 0 ~ 15 ℃.

The shape memory spring according to the present invention is preferably formed of a shape memory alloy (SMA).

The guide shaft according to the present invention is coupled to the other end of the shape memory spring on one side, is inserted into the handle on the other side is fitted with a stop ring to prevent falling downward, and supports the lower end of the handle to prevent the rising by the elastic force of the return spring It is preferable that the support step is formed.

The guide shaft according to the present invention is formed with a rotation preventing mechanism that is interfitted in the plane of the polygon in the portion penetrating the upper end of the upper support of the valve body, coupled to the end of the handle by a stop ring, the guide shaft is rotated arbitrarily during rotation of the handle It is desirable to prevent it from becoming.

The return spring according to the present invention is preferably formed of a tension spring, one end of which is latched to the support end of the guide shaft, and the other end of the return spring to the upper end of the disk member.

It is preferable that a through-hole is formed in the flow rate interrupted partition wall of the valve body according to the present invention so that a certain amount of fluid is discharged from the inlet to the outlet at a portion that is tightly controlled by the lower end of the disk member of the opening and closing means.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the automatic on-off valve according to the present invention will be described in detail.

4 is a cross-sectional view of the automatic opening and closing valve according to the present invention. Referring to this, the automatic opening and closing valve 1 is provided with an inlet 12 and an outlet 13 communicating oppositely to both ends, and the inlet 12 and A valve body (10) formed of an upper support (18) provided with an insertion hole (19) communicating upwardly of a pipe (16) in which a flow rate interruption partition (14) is formed between the discharge ports (13), and the valve body ( The opening and closing device 20 and the upper and lower ends of the opening and closing device 20 are coupled to the opening and closing operation according to the temperature difference of the fluid flowing from the inlet 12 to the discharge port 13 by intermittently intercepting the flow rate barrier rib 14 of 10). It is formed of a manual adjustment unit 30 is coupled to the outer periphery of the upper support 18 to manually adjust the size of the flow rate, the handle 32 is configured to close the upper end of the insertion hole 19.

In addition, the shape or coupling method of the valve body 10 or the manual adjustment unit 30 of the automatic opening and closing valve 1 is well known and the detailed description and action state thereof will be omitted, after which the opening and closing device 20 Only detailed descriptions and operating states are described.

The opening and closing device 20 is a disk member 100 to control the upper end portion of the flow rate interruption barrier 14, and the temperature of the fluid contained in the flow rate interruption barrier 14, one end is impregnated to the disk member 100 The guide shaft 120 and the other end of the shape memory spring 110 is transformed according to the change, the other end of the shape memory spring 110 is fixed to one side and the other end is coupled to the handle 32 of the manual control unit 30 and The return spring 130 is positioned between the guide shaft 120 and the disk member 100 to assist the return of the disk member 100 after the transformation of the shape memory spring 110.

In addition, the disk member 100 is a portion of the shape memory spring 110 is opened at the end of the depression hole 102 having a predetermined depth to the center of the cylindrical bottom surface close to the top end of the flow control barrier 14 in close contact. And an end of the elastic wing piece 104 having elastic force at the outer circumference of the cylinder is coupled to the insertion hole 19 of the upper support 18 to prevent the fluid from flowing upward of the elastic wing piece 104. It is preferably formed of silicon, which is a soft material having elasticity and sealing force, but is not limited thereto. For example, a disk member such as a rubber material or a nonwoven fabric may be used.

In addition, the shape memory spring 110, except for the elastic portion 112 of the bent portion in the shape of a bent, one end is impregnated in the disk member 100 is directly in contact with the fluid, the other end of the guide shaft 120 It is preferably formed to be fixed to one end, which is a shape memory alloy (SMA), such as nickel-titanium alloy, copper-zinc alloy, gold-cadmium alloy and indium thallium alloy It is possible to select and apply to the present invention, and the present invention is not limited thereto, and a bimetal method may be adopted in which two kinds of thin metal pieces are joined together using very different expansion coefficients according to the displacement of temperature.

In addition, the method of fixing one end of the shape memory spring 110 to the guide shaft 120 to form a fitting groove in one end of the guide shaft 110 to be fixed to the interference fit method or screw on one end of the guide shaft 120 Fastening by a coupling method, not limited to this, any one of the guide shaft 120 is fixed to one end of the shape memory spring 110 can be employed.

On the other hand, the guide shaft 120 is coupled to the other end of the shape memory spring 110 on one side, is inserted into the handle 32 to the other side is fitted with a stop ring 140 to prevent falling downward, the return spring ( A support step 122 for supporting the lower end of the handle 32 is formed to prevent the lift by the elastic force of the 140, and is preferably coupled to the end of the handle 32 by a stop ring 140, the handle 32 The anti-rotation part 124 is provided with a polygonal plane on the guide shaft 120 portion passing through the upper end of the upper support 18 of the valve body 10 to prevent the guide shaft 120 is rotated arbitrarily during the rotation of the Is formed to be fitted to the upper end of the upper support 18 to prevent any rotation.

That is, the guide shaft 120 is a shaft having a circular cross section, one end of the shape memory spring 110 is fixed to one end, the other end is fixed to the handle 32 with a stop ring 140, and rotates downward It is preferable that the copper blocking part 124 is fitted with the upper end of the upper support body 18, and the support step 122 is formed below it.

Figure 6 is a perspective view of a guide shaft according to another embodiment, referring to this, the anti-rotation portion 124 of the guide shaft 120 is formed in a polygon, such as hexagon or octagon, fitted to the upper end of the upper support 18 It is not limited to this to prevent the pivoting arbitrarily, for example, one side of the circular shape may be fitted into a plane.

In addition, one end of the return spring 130 is engaged with the support step 122 of the guide shaft 120, and the other end is formed of a tension spring that is engaged with the upper end of the disk member 100, but is not limited thereto. For example, it may be formed as a compression spring or a leaf spring, which can be adopted as long as the shape memory spring 110 is transformed according to the temperature change of the fluid and then the disk member 100 can be replaced.

In addition, a certain amount of fluid is discharged from the inlet port 12 to the outlet port 13 in the flow rate intermittent partition 14 of the valve body 10 to be tightly controlled to the lower end of the disk member 100 of the opening and closing means 20. By forming a through hole 14a, the through hole 14a is preferably formed on any one side of the flow control barrier 14, but is not limited thereto. For example, the through hole 14a may be formed in the disc member 100. It is possible to form a plurality depending on the size of the pipe, which allows a certain amount of fluid to flow continuously from the inlet 12 to the discharge port 13, when the disk member 100 blocks the flow control barrier 14 , Or to prevent the opening and closing of the opening and closing means 20 by the fluid pressure flowing through the inlet 12.

  Looking at the operating state of the switching device of the automatic shut-off valve configured as described above are as follows.

First, the automatic opening and closing valve 1 couples each of the pipelines to the inlet 12 and the discharge port 13 formed at both ends of the valve body 10, the fluid is discharged through the inlet 12 along the pipe line 13 Will be discharged.

FIG. 5B is a state diagram in which the shape memory spring has a phase transformation, and the flow control barrier rib is opened by the disc member. Referring to this, the flow control barrier rib 14 and the flow control barrier rib 14 are formed between the inlet 12 and the discharge hole 13. The shape memory spring 110 is moved through the open space between the disk member 100 provided in the upper end, the surface is open at the end of the recessed hole 102 recessed below the center of the disk member 100 Will always detect the temperature of the fluid.

5A is a state diagram in which the disk member blocks the flow control barrier. Referring to this, when the temperature of the fluid is raised or lowered to a set value, the shape memory spring 110 having some surfaces opened detects this and changes phase. A phase is formed and the one end is impregnated by the force to return to the original state, and eventually closes the upper end of the flow control barrier 14 to suppress the flow of fluid.

In addition, when the temperature of the fluid introduced into the inlet 12 is lowered or raised from the set value, the shape memory spring 110 is in a phase transformation again, in this case to raise the disk member 100, the first flow rate barrier rib ( 14) and the disk member 100 is opened to allow fluid to move from the inlet 12 to the outlet 13.

In addition, the fluid moved from the inlet 12 to the outlet 13 is introduced into the insertion hole 19 of the upper support 18 while passing through the open space between the flow control barrier 14 and the disk member 100. The elastic blade piece 104 formed on the outer circumference of the disk member 100 is coupled to the insertion hole 19 to prevent the fluid from flowing upward of the elastic blade piece 104, thereby preventing the shape of the shape memory spring 110. In addition to the open local part, the other part does not react sensitively to the temperature of the fluid, so that more accurate phase transformation is achieved.

On the other hand, the above description has been described the operating state of the disk member 100 by sensing the temperature of the fluid flowing into the inlet 12, but is not limited to this, for example, depending on the temperature of the fluid discharged to the discharge port 13 When the shape memory spring 110 changes the position of the flow control barrier 14 so as to perform a phase transformation, or the shape memory spring 110 undergoes a phase transformation according to a temperature set value of the fluid, the disk member 100 is opened. This can be used by anyone skilled in the art modified.

FIG. 7 is a perspective view of a shape memory spring according to another embodiment. Referring to this, the shape memory spring 110 forms at least two or more shape memory springs 110 which are transformed differently according to fluid temperature. The memory spring 110 is coupled to two different transformation points, one of which is a phase transformation at a high temperature of 20 ~ 40 ℃, the other is formed to be a phase transformation at a low temperature of 0 ~ 15 ℃, a general purpose to a heater or air conditioner It is intended to be applicable.

In other words, in the case of an all-weather air conditioner that is a type air conditioner and can be used at the same time in summer or winter by combining a heater with an internal cooling coil part, a high temperature and low temperature automatic shut-off valve that reacts to a single pipe according to the temperature of a fluid is conventionally applied Without the need to install at the same time through a single automatic shut-off valve to control the high-temperature and low-temperature fluid, there is a convenience that lowers the installation work and installation cost, and the convenience of replacement work due to failure or damage.

As described above, the present invention is a local portion of the shape memory spring, one end of which is impregnated in the disk member for opening and closing between the inlet port and the earthen shaft sphere is in direct contact with the fluid to sense the temperature, the flow portion and the shape memory spring through which the fluid flows and The return spring is formed to isolate the driving part, thereby protecting the shape memory spring and the return spring from the scale and foreign matter generated by the fluid has the effect of restoring the reliability of the product according to the smooth operation.

In addition, by simplifying the structure of the switchgear, there is an effect of improving the overall product competitiveness by improving the product manufacturing cost and manufacturing assembly.

In addition, by forming a plurality of shape memory springs having different phase transformation points depending on the temperature difference of the fluid, can be used for cooling or heating, reducing the cost of equipment that must be installed separately according to cooling and heating have.

In the above description of the preferred opening and closing device of the automatic shut-off valve of the present invention, but the present invention is not limited to the above-mentioned opening and closing device without departing from the gist of the present invention claimed in the following claims. Anyone of ordinary skill in the art will understand that various changes are made.

Claims (11)

An inlet 12 and an outlet 13 are provided to communicate oppositely at both ends, and the insertion hole communicated upwardly of the tubular body 16 in which the flow rate interruption barrier 14 is formed between the inlet 12 and the outlet 13. The temperature of the fluid flowing from the inlet port 12 to the outlet port 13 by intercepting the valve body 10 formed of the upper support body 18 provided with the upper body 18 and the flow rate intermittent partition wall 14 of the valve body 10. Opening and closing device 20 and the opening and closing operation according to the difference, the upper end of the opening and closing device 20 is coupled to the outer periphery of the upper support 18 to manually adjust the size of the flow rate is the upper end of the insertion hole 19 In the automatic opening and closing valve (1) formed of a manual adjustment unit 30, which is composed of a handle 32 to close the The opening and closing device 20 is a disk member 100 for regulating the upper end portion of the flow interrupting partition wall 14, A shape memory spring 110 having one end impregnated in the disk member 100 so as to phase change by sensing a temperature of a fluid flowing in the flow control barrier 14. A guide shaft 120 having the other end of the shape memory spring 110 fixed to one side and the other end thereof coupled to the handle 32 of the manual adjustment unit 30; Located between the guide shaft 120 and the disk member 100 is characterized by being formed as a return spring 130 to assist the return of the disk member 100 after the phase transformation of the shape memory spring (110) Switchgear of automatic shutoff valve. The method of claim 1, The disc member 100 has a cylindrical bottom surface open to the center of the flow control intermittent partition 14, the local portion of the shape memory spring 110 is opened at the end of the recess hole 102 having a predetermined depth, The end of the elastic wing piece 104 having elastic force at the outer circumference of the cylinder is coupled to the insertion hole 19 of the upper support 18 to prevent the fluid from flowing upward of the elastic wing piece 104. Opening and closing device of the automatic closing valve, characterized in that. The method according to claim 1 or 2, The disk member 100 is a soft opening and closing means of the automatic opening and closing valve, characterized in that formed of silicon having elastic force and closing force. The method of claim 1, The shape memory spring 110, except for the elastic portion 112 of the bent portion in the shape of the ,, one end is impregnated in the disk member 100, the local portion is in direct contact with the fluid, the other end of the guide shaft 120 Opening means of the automatic closing valve, characterized in that formed to be fixed to one end of the. The method according to claim 1 or 4, The shape memory spring (110) opening and closing means of the automatic on-off valve, characterized in that at least one or more different phase transformation is formed according to the respective fluid temperature. The method of claim 5, The shape memory spring 110 is coupled to two different transformation points, one of which is a phase transformation at a high temperature of 20 ~ 40 ℃, the other is formed to be phase transformation at a low temperature of 0 ~ 15 ℃ Opening and closing means of the valve. The method according to claim 1 or 4, The shape memory spring 110 is a shape memory alloy (Shape Memory Alloy, SMA) opening and closing means of the automatic on-off valve, characterized in that formed. The method of claim 1, The guide shaft 120 is coupled to the other end of the shape memory spring 110 on one side, is inserted into the handle 32 to the other side is fitted with a stop ring 140 to prevent falling downward, the return spring 140 Opening and closing device of the automatic on-off valve, characterized in that the support step 122 is formed to support the lower end of the handle 32 to prevent being raised by the elastic force of the. The method according to claim 1 or 8, The guide shaft 120 is formed with a rotation preventing mechanism 124 to be fitted to each other in a polygonal plane in a portion penetrating through the upper end of the upper support 18 of the valve body 10, the stop ring at the end of the handle 32 Opening and closing device of the automatic on-off valve, characterized in that the coupling is fixed to 140 to prevent the guide shaft 120 is rotated arbitrarily during the rotation of the handle (32). The method of claim 1, One end of the return spring 130 is engaged with the support step 122 of the guide shaft 120, the other end is formed by a tension spring that is engaged with the upper end of the disk member 100, the opening and closing of the automatic shut-off valve Device. The method of claim 1, A through-hole for discharging a certain amount of fluid from the inlet port 12 to the discharge port 13 in a portion of the valve body 10 is tightly closed to the lower end of the disk member 100 of the opening and closing means 20 of the opening and closing means 20 Opening and closing device of the automatic on-off valve, characterized in that (14a) is formed.

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