KR100937884B1 - An automatically flow control valve according to water temperature - Google Patents

Abstract

The present invention relates to a valve having a function of adjusting the flow rate of the fluid flowing in the pipeline according to the temperature, and more particularly, in conjunction with the shape recovery force by the shape memory effect of the shape memory spring according to the temperature of the fluid flowing through the pipeline It is a flow control valve that automatically regulates the flow rate according to the water temperature by automatically blocking or opening the flow path by the expansion force of the operating return spring.A cylindrically shaped valve seat protrudes from the inner circumference and an inlet is formed on one side. A valve body having a discharge port is formed at a side thereof, and the valve body has a rod-shaped valve stem inserted in a longitudinal direction at an inner center portion thereof, and the valve stem has a plurality of inflow grooves radially at the other side on one side of the valve seat. The formed push disk and return spring are fitted, and the other side of the first and second valve disks A shape memory spring is inserted and moved in the axial direction to open and close the flow path, wherein the first valve disc is a two-stage cylinder type and has an insertion cylinder having an outer diameter smaller than that of the disk cylinder and the insertion cylinder has an inner diameter of the outer diameter of the valve stem. The larger discharge space is formed between the insertion cylinder and the valve stem, one end is in contact with the push disk, and the other side is drilled with a plurality of micro discharge holes radially, and the second valve disc is inserted into the outer circumferential surface of the insertion cylinder to allow fine discharge. One side is in contact with the other side of the valve seat in a state in which the ball is perforated, and the shape memory spring gradually loses elasticity due to the decrease in water temperature of the heating water at the outlet side. When pushed, the second valve disc and the disc cylinder are separated from each other to form a fine flow path, and the heating water on the inlet side The push disk pushes the second valve disk by the return spring which is discharged into the micro channel through the air inlet groove, the micro outlet space, and the micro outlet hole, and the water pressure at the inlet side and the outlet side is the same and continuously expands, so the flow path is completely opened. It relates to an automatic flow rate control valve, characterized in that.

Valve body, valve stem, first valve disc, second valve disc, return spring, shape memory spring, push disc

Description

An automatically flow control valve according to water temperature}

The present invention relates to a valve for sensing a heating water temperature and adjusting a flow rate according to a temperature, and more particularly, a shape recovery force due to a shape memory effect of a shape memory spring according to a heating water temperature and a return spring operating in conjunction with the shape. The present invention relates to a water-sensing heating technology that adjusts the indoor heating temperature by automatically opening and closing a valve according to the water temperature by using the expansion force, and also controls the heating temperature of the inlet and outlet. Since the flow path is opened and closed in the same direction as the flow direction of water relates to an automatic flow rate control valve that can be used semi-permanently because no residue is accumulated.
The Shape Memory Effect of Shape Memory Alloy (SMA) is rapidly cooled at a higher temperature than the critical temperature to form a low temperature phase, and when it is deformed and then heated again, the shape memory effect is reversed. It is a phenomenon in which transformation occurs and at the same time, the shape is recovered. Using this phenomenon of the shape memory alloy (SMA), the shape memory spring is formed at a specific temperature, heat treated, the shape is memorized, and installed along the return axis with the return spring. When the heating water flows into the room and reaches the return part, when the temperature of the heating water becomes equal to the specific heat treatment temperature of the shape memory spring, the return spring is pushed out by the shape recovery force by the shape memory effect of the shape memory spring and the flow path is blocked. , The heating water flows down and the shape memory spring loses its elasticity. Side while the return spring that is contracted to expanded again open the flow path to flow a hot can heated.
When the heating water is heated, the valve closes to shut off the flow of heating water, and when the temperature decreases, the valve is opened again to allow the heating water to flow, that is, the flow rate according to the temperature of the heating water. By adjusting the room heating temperature automatically.

In general, the heating method for controlling the room temperature using a valve is a temperature sensing and water temperature sensing. The temperature sensing formula is a method of controlling the room temperature by turning on / off the boiler or operation valve by the room temperature sensor as the room temperature rises as the heating water is heated.

In this method, the hot water moves through the pipes and conducts heat to the floor, increasing the floor temperature and exchanging heat with the room air again. As the room temperature rises, the room temperature on the wall about 1.2m from the floor. The sensor of the controller detects the indoor air temperature and when the proper temperature is reached, the boiler is stopped in case of individual heating and in the case of central heating and district heating, it is turned on / off or proportionally opened or closed by capillary tube or power. Close the operation valve installed in the distributor to shut off the supply of heat source and when the temperature drops again, restart the boiler or open the operation valve to circulate the heating water and adjust the temperature.

However, such a temperature-sensing valve is uneconomical because high-temperature heating water circulates and passes through the piping of the room until the room temperature rises to shut off the valve, and wires or capillary tubes must be buried at installation. There is an inconvenience in using the temperature control.

Next, when the heating water circulates the floor and reaches the return part, the water temperature detection valve automatically adjusts the flow rate and adjusts the heating temperature according to the temperature of the heating water.

This water temperature sensing valve is intended to give a residence time for heat exchange because the floor and the heating water can not be heat exchanged quickly, it is possible to block the unnecessary flow to prevent heat loss of the exposed heating pipes.

In particular, this method reduces the flow rate and slows down the flow rate by transferring the heating water, regardless of the room temperature, to the disk that the shape memory spring changes the force and length quickly and accurately according to the temperature. Since heating temperature can be raised with a small amount of heat in a short time, it is possible to save the heating cost of heating methods such as district heating or centralized type, which charges by the amount of heating water regardless of the amount of heat.

As a result, the operating time and the number of operating hours of the boiler are reduced to prevent unnecessary waste of heat source, thereby reducing the fuel used. In addition, when several rooms are used at the same time, the room that reaches the set temperature is blocked first, so that the pressure rises to the remaining room, thereby providing a quick heating and heating balance. There are various driving methods for opening and closing the flow path of the water temperature sensing valve, but the method applied to the present invention is a shape memory effect of the SMA and a pressure canceling method.

The pressure canceling method means that when the valve shuts off the flow path of the heating water flowing into the inlet, the voltage is applied to the front of the inlet, and the return spring expands and the expansion of the return pressure causes the valve disk to push the valve disk to make the expansion force large. do. So at first, a small flow path was formed with a small force, and the pressure of the inlet and outlet was canceled so that the entire disk could be opened.

By opening and closing the two flow paths, the first valve disc is first opened with inflation force with less return spring to balance the inlet and outlet pressures, and then the second valve disc is opened to open the entire flow path with time difference. The impact of hydraulic pressure is minimized. This pressure canceling method is essential when controlling high pressures with a small force.

Such a water temperature sensing heating valve

Patent No. 10-0514470 Name of the invention: "Water temperature sensing automatic temperature control valve"

Patent No. 10-0514469 Name of the invention: "Water temperature sensing automatic temperature control valve"

Utility Model Registration No. 20-0235902 Designated Name: "Temperature Control Valve"

Utility Model Registration No. 20-0213465 Designated name: "Heating flow control valve"

Patent No. 10-0583828 Name of the invention: "Flow control valve capable of temperature control indoors"

Registered Utility Model No. 20-0209260 Designated: "Hot Water Automatic Control Valve", etc.

Although there are various types, the name of the invention No. 10-0514470: "water temperature sensing automatic temperature control valve" and 10-0514469 name of the invention: "water temperature sensing automatic temperature control valve" is a fluid while the fluid flows After the predetermined time has elapsed due to the accumulation of waste in the lower guide hole, the valves are not operated. Also, the function of the valve seat is remarkably different depending on the supply pressure of the heating water. Since the end is formed at a right angle and the opening and closing operation is made vertically rapidly, it causes noise generation due to water hammering.

This water hammering has a problem that a sudden pressure change is directly transmitted to the pipe, so that noise caused by vibration and impact sound may be caused, as well as failure of the piping system and the connection device when severe.

Another patent registered below has a structure that installs a shape memory spring and a return spring in a single flow path and opens a flow path blocked only by the spring's elastic force, so that there is a difference in the heating water supply pressure as in the high and low floors of apartment houses such as apartments. If it is used in place, it can not overcome this pressure difference and the structure will have no difference.

The present invention to solve the above problems while adjusting the flow rate according to the water temperature of the heating water should be a structure that does not accumulate the accumulation of the fluid and to open easily while overcoming the pressure difference between the inlet and the outlet when it is closed Its purpose is to prevent noise from the water hammer by operating smoothly without being affected by water pressure and not blocking or opening the flow path suddenly.

In order to achieve this purpose, the valve seat is formed in the center of the inner peripheral surface protruding, the inlet is formed on one side and the outlet is formed on the other side, the valve body has a rod-shaped valve stem in the inner center portion in the longitudinal direction The valve stem is fitted with a push disk and a return spring formed with a plurality of inlet grooves radially on the other side on one side of the valve seat, and the first and second valve disks and the shape memory spring are inserted on the other side in the axial direction. The first valve disc is a two-stage cylinder type disc cylinder having a constant outer diameter and an insertion cylinder of an outer diameter smaller than the disc cylinder, and the insertion cylinder has an inner diameter larger than the outer diameter of the valve stem. A micro outlet space is formed between the cylinder and the valve stem, and one end is pushed A plurality of fine outflow holes are radially drilled on the other side and the second valve disc is movably fitted to the outer circumferential surface of the insertion cylinder so that one side of the other side of the valve seat covers a portion where the fine outflow hole is perforated. The shape memory spring gradually loses its elasticity due to a decrease in the water temperature of the outlet-side heating water, and when the push disk pushes the first valve disk by the return spring, a space between the second valve disk and the disk cylinder is formed to form a fine flow path. And the push disk is discharged to the micro channel through the inlet groove, the micro outlet space, and the micro outlet hole while the water pressure at the inlet side and the outlet side is the same and the push disk is continuously expanded. It is a feature of the invention that the flow path is fully opened by pushing.

The automatic flow control valve according to the present invention saves energy used for heating and at the same time provides balanced heating and prevents malfunction due to hydraulic pressure difference when the valve is opened and closed. Because the structure does not accumulate residues, it can not only prevent failures, but also reduce or eliminate water hammering, thereby reducing the noise generated during operation and the failure of piping systems.

Hereinafter, the preferred configuration according to the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 6, the automatic flow rate control valve A of the present invention has a shape recovery force due to the shape memory effect of the shape memory spring 9 according to the heating water temperature and a return spring 8 which operates in conjunction with this. A water temperature sensing valve that controls the indoor heating temperature by automatically controlling the flow rate of heating water by opening and closing the flow path 15 according to the water temperature by using the expansion force of the valve seat. And an inlet 10 is formed at one side thereof, and a valve body 1 having an outlet 11 formed at the other side thereof, and the valve body 1 has a rod-shaped valve stem 4 inserted in an inner middle portion thereof in a longitudinal direction. The valve stem 4 is fitted with a push disk 7 and a return spring 8 on one side of the valve seat 1a and the first and second valve disks 5 and 6 on the other side. Shape memory spring (9) made of shape memory alloy (SMA) material The first and second valve disks 5 and 6 and the push disk 7 are moved in the axial direction by the shape memory effect of the shape memory spring 9 and the elastic force of the return spring 8. The flow path 15 formed by 1a is configured to open and close.
The valve body 1 has a cylindrical inlet 10 formed on one side and the outlet 11 formed on the other side is formed in the same line as the flow of heating water and the inlet 10 and the outlet 11 is formed The inner circumferential surface of the portion is formed with a female threaded portion, the inlet cap 3 and the outlet cap 2 having a male threaded portion formed on the outer circumferential surface thereof are screwed into the inlet 10 and the outlet 11 respectively. The outer peripheral surfaces of the cap 3 and the outlet cap 2 are fitted with sealing rings 16a and 16b, respectively, as shown in FIGS. 2 to 4 to prevent leakage, and the outlet cap 2 The volleyball 2a is integrally formed and fixed to the fixing nut 13 in a state in which the other end of the valve stem 4 penetrates to the center portion of the distribution port 2a.
In addition, the valve seat 1a protruding from the center of the inner circumferential surface of the valve body 1 is in contact with one side surface of the second valve disk 6 to move the first and second valve disks 5 and 6. The inclined surface 6b is formed along the flow path 15, and the inner side of the other side of the valve seat 1a is formed as the inclined surface 1b so as to be formed at the outer side of one side of the second valve disc 6. In close contact with each other.
The valve stem 4 is installed in the longitudinal direction in the inner center portion of the valve body 1 in a long rod shape as shown in Figures 2 to 6, the valve seat (1a) of the valve body (1) The valve stem 4 located on one side of which the inlet 10 is formed is fitted with a push disk 7 and a return spring 8 made of a general elastic spring, and the valve located on the other side of which the outlet 11 is formed. The stem 4 is fitted with the first and second valve discs 5 and 6 and a shape memory spring 9 made of a conventional shape memory alloy (SMA). The other end of the valve stem 4 is Through the distribution port (2a) of the outlet cap (2) is fixed and fastened to the fixing nut 13, one end is to be fixed to the inside of the valve body (1) is fastened to the adjustment nut (13a).
On the other hand, the valve body 1 has a temperature control scale 12 is formed on the outer circumferential surface as shown in Figs. 1 and 5 and the other end is fixed to the outlet cap (2) when the valve body (1) is reversed The stroke of the shape memory spring 9 which is interposed between the distribution port 2a and the 2nd valve disc 5 by changing the position of the valve seat 1a in the state which the fastened valve stem 4 fixed is fixed. While controlling, the required temperature is controlled.
As shown in FIG. 6, the push disc 7 has a ring-shaped valve seat 1a having an inner diameter corresponding to the valve stem 4, through which the valve stem 4 is inserted, and an outer diameter forming a flow path 15. It has an outer diameter smaller than the inner diameter of) and a plurality of inflow grooves 7a are formed radially on the other side, and one end and the other side of the insertion cylinder 5b of the first valve disk 5 are in contact with each other. As shown in FIG. 3, the heating water from the inlet 10 is introduced into the fine outlet space 5e formed between the insertion cylinder 5b and the valve stem 4 through the plurality of inlet grooves 7a. .
The return spring 8 is a normal elastic spring and is fitted to one side of the valve stem 4 so as to move the push disk 7 axially by its elastic force corresponding to the shape memory spring 9. The elastic force is adjusted by loosening or tightening the adjusting nut 13a installed at one end of the valve stem 4.
As shown in FIGS. 2 to 6, the first valve disc 5 has a two-stage cylindrical shape having a different diameter, and has a disc cylinder 5a having a constant outer diameter on one side and an outer diameter smaller than the disc cylinder 5a. The insertion cylinder (5b) having a holding is integrally provided on the other side of the disk cylinder (5a), the disk cylinder (5a) so that the inner diameter is to match the outer diameter of the valve stem (4) and the shape memory spring (9) on the other side One end of the step is fitted with a step (5c) is coupled to one side of the inner circumferential surface of the portion formed step (5c) is inserted valve stem O (5d) is inserted into the inner circumferential surface of the disk cylinder (5a) and the valve stem ( It is to prevent leakage between the outer circumferential surface of 4), the inner diameter of the insertion cylinder (5b) is larger than the outer diameter of the valve stem (4) between the insertion cylinder (5b) and the valve stem (4) 5e) is formed and one end of the push disk (7) And it touches the other surface can fit radially perforated with a plurality of fine outlet hole (5f) the other side.
The second valve disk 6 is ring-shaped so that its inner diameter is fitted to the outer circumference of the insertion cylinder 5b so as to be axially movable along the insertion cylinder 5b. And one side outer portion is formed with an inclined surface (6a) is in contact with the inclined surface (1b) formed in the other side inner portion of the valve seat (1a) to be in close contact with each other, as shown in Figure 2 One side of the second valve disc 6 is in contact with the other side of the valve seat 1a in a state where the flow path 15 is blocked by the shape recovery force of the shape memory spring 9 according to the supply of heating water. The other side of the second valve disc 6 is positioned in contact with the disc cylinder 5a of the first valve disc 5 to cover the fine outflow hole 5f formed on the other side of the insertion cylinder 5b. As shown in Fig. 3, the mold is formed by lowering the water temperature of the heating water on the outlet 11 side. When the memory spring 9 gradually loses its elasticity and the push disk 7 pushes the first valve disk 5 by the elastic force of the return spring 8 which is linked thereto, the hydraulic pressure at the outlet 11 side and the inlet 10 side The push is performed in a state in which the first and second valve discs 5 and 6 are not simultaneously pushed to one side by a difference and the second valve disc 6 is in contact with the valve seat 1a to block the flow path 15. Only the first valve disc 5 is moved in the other direction by the disc 7 so that the space between the second valve disc 6 and the disc cylinder 5a of the first valve disc 5 is separated and therebetween. A fine flow passage 14 is formed, and the hot water of the hot water at the inlet 10 is inlet groove 7a of the push disc 7 and the fine outlet space 5e and the fine outlet hole of the insertion cylinder 5b. It is to be discharged to the micro-channel 14 through 5f, the heating water of the inlet 10 side through the micro-channel 14 discharge port 11 side as shown in FIG. When the inlet 10 and the outlet 11 have the same water pressure, the return spring 8 expands and the push disk 7 pushes the second valve disk 6 to the second valve disk ( 6) is separated from the valve seat 1a so that the flow path 15 is completely opened secondarily, and the shape memory spring 9 is heated by the continuously heated high temperature water to reach a specific heat treatment temperature. As shown in FIG. 2, the first and second valve discs 5 and 6 are moved in one direction and block the flow path 15 of the valve seat 1a. The valve A is kept closed.

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Referring to the drawings in detail with reference to the drawings the process of operating the components in conjunction with the process to the heating water flows in and out of the valve (A) according to the present invention for solving the above object as follows.
2 is a cross-sectional view of the valve A in order to explain the action of each part according to the heating water temperature change in detail, while the hot water is introduced into the inlet 10 and the heat is conducted by the water temperature of the heating water. When the shape memory spring 9 is heated and reaches a specific heat treatment temperature, the shape memory spring 9 is pushed in one direction by the shape recovery force of the shape memory spring 9 in the expanded state. As a state, the first valve disc 5 and the second valve disc 6 block the flow path 15, and the heat of the hot water for heating is a sectional view of a state in which the room is heated.

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4 is a cross-sectional view of the flow path 15 in an open state. As the hot water for heating heats the room and the temperature decreases, the shape memory spring 9 loses its elasticity and the return spring 8, which has been contracted correspondingly, expands. 1 valve disc 5 and the 2nd valve disc 6 are pushed in order, and the flow path 15 of a heating water is opened.

The operation of flowing out the heating water introduced into the inlet 10 to the outlet 11 and the process of blocking the flow path 15 will be described in more detail as follows.

When the flow path 15 of the valve A installed in the heating pipe return portion is blocked, the high temperature heating water does not flow to the outside and is heated by the indoor floor and heat conduction. When the temperature of the heating water is lowered during heating and the shape memory spring 9 of the valve A loses its elasticity, the first valve disc 5 and the second valve are caused by the expansion force of the return spring 8 that interlocks correspondingly. The valve disc 6 is pushed in the other direction, so that the flow path 15 is completely opened as shown in FIG. 4. When the flow path 15 is completely opened as described above, the hot water flows back into the valve body 1 through the inlet 10 again, and passes through the valve seat 1a and the valve stem on the outlet 11 side. Heat is transferred to the shape memory spring 9 mounted in 4).

When the temperature of the shape memory spring 9 rises due to the high temperature heating water flowing from the inlet 10 side, the shape memory spring 9 is expanded to recover the shape at the time of the heat treatment temperature. The expanded shape memory spring 9 pushes the first valve disk 5 moving in the axial direction of the valve stem 4 in one direction, and the second valve disk 6 moves in conjunction with the valve seat 1a. In order to block in turn, the entire flow path 15 is blocked to the state of FIG. 2. At this time, the return spring 8 is contracted as the shape memory spring 9 expands.

On the contrary, the process of opening the flow path 15 will be described in detail with reference to FIGS. 3 and 4 as follows. When the flow path 15 is blocked, the shape memory spring 9 expands with a shape recovery force to block the voltage of the heating water flowing into the inlet 10 and pushes the first valve disc 5 and the second valve disc 6. If the shape memory spring 9 gradually loses its elasticity due to a decrease in water temperature of the heating water on the outlet 11 side, the return spring 8 acting in conjunction with the shape memory spring 9 as shown in FIG. The push disk 7 pushes the first valve disk 5 while expanding, and the second valve disk 6 opens the flow path 15 in contact with the valve seat 1a by the hydraulic pressure on the outlet 11 side. As the first valve disc 5 moves to the other side, the second valve disc 6 and the disc cylinder 5a of the first valve disc 5 are spaced apart and are primarily fine. The flow path 14 is formed, and the high temperature heating water on the inlet 10 is formed by the inlet groove 7a of the push disk 7 and the insertion cylinder 5b. It is discharged to the micro channel 14 through the micro outlet space portion 5e and the fine outlet hole 5f.

As shown in FIG. 4, the microchannel 14 is opened and the heating water of the inlet 10 is introduced into the outlet 11 through the microchannel 14. When the hydraulic pressure is equal, the return spring 8 continuously expands while pushing the second valve disk 6 to open the flow path 15 away from the valve seat 1a.

As described above, the valve A according to the present invention has a structure that does not accumulate waste inside, since the opening and closing of the first and second valve discs 5 and 6 are the same as the direction of the heating water flow as well as the flow rate control according to the temperature. And since it operates in accordance with the pressure in order to prevent malfunction due to the pressure difference between the inlet (10) and the outlet (11), the structure does not change the flow path 15 and the flow rate drastically to mitigate water hammering (water hammering) In addition, by forming the flow path 15 step by step, it is possible to reduce or eliminate the formation of turbulence or vortex.

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1 is a perspective view showing a coupled state of the automatic flow rate control valve according to the present invention

Figure 2 is a schematic cross-sectional view of a state in which the flow path is blocked by closing both the first valve disk and the second valve disk in the automatic flow control valve according to the present invention

Figure 3 is a schematic cross-sectional view of a state in which the hot water is supplied through the micro-channel as the first flow path is opened in the first valve disk in the automatic flow control valve according to the present invention;

Figure 4 is a schematic cross-sectional view of both the first valve disk and the second valve disk is open in the automatic flow control valve according to the present invention open state

Figure 5 is a schematic perspective view showing an exploded state of the automatic flow control valve according to the present invention

Figure 6 is a perspective schematic view of the first valve disk and the second valve disk and the push disk coupled to the valve stem in the automatic flow control valve according to the present invention;
<Description of Symbols for Major Parts of Drawings>
A. Valve 1. Valve Body
1a. Valve seat 1b. incline
2. Outlet cap 2a. Distribution
3. Outlet cap 4. Valve stem
5. First valve disc 5a. Disc cylinder
5b. Insertion cylinder 5c. Step
5d. Valve steming 5e. Fine outflow space
5f. Fine outflow hole 6. Second valve disc
6a. Slope 7. Push Disc
7a. Inlet groove 8. Return spring
9. Shape memory spring 10. Inlet
11. Outlet 12. Scale for temperature control
13. Locking nut 13a. Adjusting nut
14. Euro 15. Euro
16a, 16b. Sealing ring

Claims (9)

The valve body protrudes from the inner circumferential surface of the cylindrical portion, the inlet is formed on one side and the outlet body is formed on the other side, the valve stem is inserted into the valve body, the disk, the shape memory spring, the restoring spring In the provided flow control valve, the valve stem (4) is a push disk (7) and a return spring formed with a plurality of inlet grooves (7a) radially on the other side on one side of the valve seat (1a) The first and second valve discs 5 and 6 and the shape memory springs 9 are inserted into the other side to move the shaft 15 in the axial direction, and the first valve disc 5 is two-stage. The cylindrical cylinder is composed of a disk cylinder 5a and an insertion cylinder 5b having an outer diameter smaller than the disk cylinder 5a, and the insertion cylinder 5b has an inner diameter larger than the outer diameter of the valve stem 4 and the insertion cylinder 5b. The fine outflow space 5e between the valve stems 4 is One end is in contact with the push disk (7) and on the other side a plurality of fine outlet holes (5f) are radially drilled, the second valve disk (6) is inserted into the outer circumferential surface of the insertion cylinder (5b) One side is in contact with the other side of the valve seat 1a with the fine outflow hole 5f covered, and the shape memory spring 9 gradually loses its elasticity due to the decrease in the water temperature of the heating water on the outlet 11 side. When the push disk (7) pushes the first valve disk (5) by the eight (8) is spaced between the second valve disk (6) and the disk cylinder (5a) to form a fine flow path 14, the inlet 10 side Is discharged into the micro channel 14 through the inlet groove 7a, the micro outlet space portion 5e and the micro outlet hole 5f, the water pressure of the inlet 10 side and the outlet 11 is equal It is characterized in that the push disk 7 pushes the second valve disk 6 by the return spring 8 which is expanded to open the flow path 15. Automatic flow control valve. According to claim 1, wherein the valve body (1) is formed on the inner circumferential surface of the portion formed in the inlet 10 and the outlet 11, the inlet cap (3) and the outlet cap (3) 2) is screwed into the inlet 10 and the outlet 11, respectively, screwed in, the inlet cap (3) and the outlet cap (2) has a sealing ring (16a, 16b) is fitted to the outer peripheral surface, respectively It is to prevent leakage, the outlet cap (2) is formed in the distribution port (2a) integrally inside and fixed to the other end of the valve stem (4) in the center portion of the distribution port (2a) Automatic flow control valve, characterized in that the fastening by the nut (13). According to claim 1, wherein the valve stem 4 is a rod-shaped distribution port integrally formed on the inside of the outlet cap (2), the other end is screwed into the outlet 11 of the valve body (1) (2a) is fixed and fastened to the fixing nut 13, one end of the valve stem (4) by the adjustment nut (13a) is fastened to loosen or tighten the adjustment nut (13a) valve stem (4) Automatic flow control valve, characterized in that the elastic force of the return spring (8) fitted in the adjustment. The automatic flow control valve according to any one of claims 1 to 3, wherein the valve body (1) has a temperature control scale (12) formed on an outer circumferential surface thereof. The valve seat (1a) according to claim 1, wherein the push disk (7) has a ring-shaped inner diameter corresponding to the valve stem (4) so that the valve stem (4) is inserted and the outer diameter forms a flow path (15). Automatic flow control valve, characterized in that less than the inner diameter of. According to claim 1, wherein the disk cylinder (5a) has an inner diameter to match the outer diameter of the valve stem (4) and the other side is formed with a step (5c) is fitted with one end of the shape memory spring (9) is fitted One side inner circumferential surface of the portion where the step 5c is formed has a valve stem ring 5d interposed therebetween to prevent leakage between the inner circumferential surface of the disc cylinder 5a and the outer circumferential surface of the valve stem 4. Automatic flow control valve. 2. The second valve disc (6) according to claim 1, wherein the second valve disc (6) is ring-shaped so that its inner diameter matches the outer diameter of the insertion cylinder (5b) and is movable in the axial direction while being fitted to the outer circumferential surface of the insertion cylinder (5b). An inclined surface (6a) is formed on the side outer portion is in contact with the inclined surface (1b) formed in the inner side of the other side of the valve seat (1a) to be in close contact with and close contact. delete delete

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