KR20050036795A - Flow rate control valve capable of adjusting room temperature - Google Patents

Abstract

The present invention is used as a valve installed in the return portion of the heating distributor of a heating facility such as a boiler, it is possible to adjust the room temperature automatically by adjusting the flow rate of water of a predetermined temperature (magnetically )) The flow control valve, which is equipped with a shape memory alloy that varies according to the temperature in the valve body to shield the valve when a fluid having a temperature above the set temperature flows, but adjusts the degree of expansion and contraction of the shape memory alloy. It is an object of the present invention to provide a boiler flow control valve capable of adjusting the temperature of the room that can adjust the opening and closing amount of the valve according to the temperature of the fluid required by the user.

In order to achieve the above object, the present invention, in the flow rate control valve used as a return valve of a heating facility, such as a boiler, a valve chamber of a predetermined size is formed therein, the valve body is provided with a fluid inlet and outflow pipe at a predetermined position ; Expansion and contraction means built in the valve chamber of the valve body and made of a shape memory alloy which expands at a specific temperature and expands and contracts as the temperature of the fluid is elevated based on a set value; A disk which is inserted into the expansion and contraction means and moves in the fluid flow direction in the valve chamber of the valve body in accordance with the expansion and contraction operation thereof to open and close the passage of the fluid; And opening and closing amount adjusting means mounted on the valve chamber of the valve body to adjust an opening angle of at least one portion of the inlet and the outlet of the valve, wherein the outlet passage and the valve chamber of the valve body have an inner diameter greater than that of the fluid inlet side. The inner diameter of the valve chamber downstream of the disk is larger and provides a boiler flow control valve capable of controlling the temperature of the room to minimize noise during fluid flow.

Description

Flow rate control valve capable of adjusting room temperature

The present invention relates to a flow rate control valve that can be used as a valve installed in the return portion of the hot water distributor of a heating facility such as a boiler, the room temperature can be adjusted automatically by adjusting the flow rate of water of a predetermined temperature, In particular, the valve is opened and closed using a shape memory alloy that is stretched according to the temperature of the fluid or gas passing through the valve body, and a separate valve opening control device is required to control the flow rate of hot water by adjusting the opening and closing degree of the valve. According to the present invention relates to a boiler flow control valve capable of controlling the temperature of the room to adjust the temperature of the room.

Ondol-type houses in Korea heat the bottom of the room to heat up the ondol which forms the room. The modern ondol structure is constructed by installing pipes on the bottom of the room and circulating the hot water heated by the boiler through the pipe while heating the floor of the room through the heat transfer between the hot water and the room floor.

1 is a conceptual diagram schematically showing the structure of a boiler and hot water supply piping in a modern ondol structure home. In FIG. 1, a piping structure for heating three rooms R1, R2, and R3, and a boiler 10, a water supply unit 20, and a return unit 30 are illustrated. This is a schematic diagram, for explaining the circulation of the ondol structure and hot water.

As shown in Fig. 1, the modern ondol structure of Korea has a heating system such as a boiler 10 for heating hot water; A pipe 40 formed in a circulation structure in which a plurality of bends are installed on the bottom surface of the room to bend a plurality of times to circulate water; A water supply unit 20 for supplying hot water from the boiler 10 to the pipe 40; And a return unit 30 to which water circulated in the pipe 40 is returned again.

The water supply unit 20 and the return unit 30 is provided with a water supply valve 21 and a return valve 31 to adjust the flow rate of hot water supplied to the pipe 40 at the bottom of the room or returned from the pipe.

In general, the valve device used in the water supply valve or the return valve controls the flow of the fluid by operating the valve seat through which the fluid passes through the valve stem and the handle, and also flows into the valve seat using the temperature controller. It is possible to remotely control the temperature of the fluid.

2 is a schematic view showing the configuration of a general valve device.

A conventional valve device for maintaining the temperature of the fluid passing through the valve at a selected temperature is provided on the stem 102 of the valve 101 to sense the temperature of the fluid passing through the valve chamber, as shown in FIG. A fluid detection sensor 103; The fluid transmission sensor 104 is connected to the fluid detecting sensor 103 and transmits a detection signal thereof, and the fluid passage of the valve is opened and closed according to a temperature signal of the fluid applied through the transmission element 104. It consists of a temperature control device 105 for maintaining at a set temperature.

The valve device configured as described above does not cause any problem when it is first installed, but after a certain period of time, each device is deteriorated or an operation is not performed properly due to external environmental factors. It is happening. In addition, the conventional valve device has a long distance between the temperature control device and the fluid detecting sensor, a complicated configuration, a high cost, and inconvenient maintenance in case of a failure. In addition, there is a problem that the opening and closing operation of the valve is very troublesome because it is configured to open and close the valve manually by the handle.

In order to overcome the above problems, the present applicant has proposed the automatic temperature control valve disclosed in Utility Model Registration No. 213447 and No. 224511.

As shown in FIGS. 3 and 4, the registered thermostatic valve has a valve chamber 203 in which a fluid discharge port 201a communicates with one side thereof. A valve body 201 having a fluid inflow passage 201b penetrated in the longitudinal direction so as to communicate with the other side; A coil spring 204 embedded in the valve chamber 203 of the valve body 201 and made of a shape memory alloy to contract and expand as the temperature of the fluid moves up and down based on a set value; One side is fitted to the coil spring 204, the needle 205 for opening and closing the passage of the fluid while moving left and right in the valve chamber 203 of the valve body 201 in accordance with the contraction and expansion of the coil spring 204 ); A bias spring 206 whose one end is located on the inner side of the valve chamber 203 and the other end is fitted to the other side of the needle 205 to provide a force pushing the needle 205 to the open side of the valve chamber 203. ); A ball 207 installed in the fluid passage 201c of the valve body 201 to open and block the fluid passage 201b as it rotates in a predetermined angle direction; A ball stem 208 having one side connected to the ball 207 and the other side exposed to the outside of the valve body 201; A manual lever 209 coupled to the ball stem 208 to provide a rotational force to the ball 207; And a packing 210 provided on an outer circumferential surface of the ball 207 to maintain airtightness.

Such a valve structure may be used as the return valve 21 provided in the heating facility, that is, for example, the return portion 20 of the boiler 10.

In describing the operation of such a valve, when the low temperature fluid passes through the valve, the coil spring 204 is contracted, and the needle 205 fitted to the coil spring 204 is pulled toward the fluid inlet side. The fluid inlet 201b communicating with 203 is opened. At this time, the bias spring 206 pushes the needle 205 toward the fluid inlet side to facilitate the movement of the needle 205.

On the contrary, when a fluid having a high temperature higher than the set temperature of the coil spring 204 passes through the valve chamber 203 of the valve body 201, the coil spring 204 expands and thus the needle 205 is expanded. Overcoming the pushing force of the bias spring 206 is to block the fluid outlet 201a of the valve chamber 203 to block the flow of the fluid.

As described above, the coil spring 204 automatically opens and closes the valve while the coil spring 204 contracts or expands according to the temperature of the fluid passing through the valve chamber 203 of the valve body 201 so that the fluid temperature is constantly maintained at a selected temperature. It is to be made.

When the fluid passage of the valve chamber 203 is artificially shut off, the fluid passage 201b of the valve body 201 is opened by rotating the lever 209 from the open position to the closed position. The ball 207 rotates to block the fluid passage 201b.

However, although the temperature of the fluid is often changed by various environmental changes, the coil spring 203 is stretched only within its own temperature range, so that the automatic temperature control valve has a desired temperature within the valve. There was a problem that it is difficult to pass the fluid.

Accordingly, the present invention has been proposed to solve the above problems, and is used as a valve installed in the return portion of a heating facility such as a boiler, by mounting a shape memory alloy that varies depending on the temperature in the valve body above a set temperature When the fluid having a temperature flows, the valve can be shielded, but by adjusting the sealing degree of the shape memory alloy to control the flow rate of the boiler that can adjust the opening and closing amount of the valve according to the temperature of the fluid required by the user The purpose is to provide a valve.

In order to achieve the above object, the present invention, in the flow rate control valve used as a valve installed in the return portion of the heating facility, a valve chamber of a predetermined size is formed therein, the fluid inlet and outlet pipe is provided at a predetermined position Valve body; Expansion and contraction means built in the valve chamber of the valve body and made of a shape memory alloy which expands at a specific temperature and expands and contracts as the temperature of the fluid is elevated based on a set value; A disk which is inserted into the expansion and contraction means and moves in the fluid flow direction in the valve chamber of the valve body in accordance with the expansion and contraction operation thereof to open and close the passage of the fluid; And an opening and closing amount adjusting means mounted on the valve chamber of the valve body to adjust the opening angle of at least one portion of the inlet and the outlet of the valve, the valve chamber inner diameter of the disk downstream of the inlet side of the fluid inflow and outflow pipe is more. It provides a flow control valve that can be controlled at room temperature to minimize noise during fluid flow.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 5A to 7C.

Flow rate control valve capable of adjusting the room temperature according to the present invention is to be opened and closed automatically according to the temperature of the fluid without a separate control device, and implemented to allow the fluid to flow at the temperature desired by the user, in this embodiment Figure 5a to Figure As shown in Fig. 6, the valve body has a valve chamber therein, and has an inlet 301a through which fluid such as heating water flows in and out at both ends with a predetermined longitudinal axis deviation at the upper and lower sides thereof, and an outlet 301b. 301; A valve cover 302 screwed to one end of the valve body 301 and having an inner space communicating with the valve chamber thereof; A valve seat 304 installed in the fluid flow direction across the inner space of the valve body 301 and the valve cover 302 and having a predetermined stepped portion 304a formed therein; A valve stem support member 303 inserted into an inner space part 302a of the valve cover 302 to support the valve stem 304; A disk 307 fitted to the valve seat 304 and formed by the valve body 301 to open and close the opening 301c of the valve chamber communicating the inlet 301a and the outlet 301b; A bias spring 310 for providing an elastic force to the disk 307 in one direction (the opposite direction in which the bias spring supporting member is installed) to open the opening of the valve chamber; A bias spring support member 306 having an outer circumferential surface fitted in an inner space of the valve body 301, and having one end of the valve stem 304 fitted on an inner surface thereof to support the bias spring 310; An alignment ring 308 positioned on the valve seat 304 in an axial direction on one side of the bias spring support member 306 to stably align the position of the bias spring 310; The shape memory alloy material is expanded in response to a predetermined temperature of the fluid flowing through the inlet 301a, and is inserted into the valve seat 304 on the other side of the disk 307 to shield the opening 301c of the valve chamber. A coil spring 309 which provides a pressing force to the disk 307 in a direction; A cam case 311 integrally provided on an outer surface of the valve stem support member 303; A cam 312 inserted into the cam case 311 to adjust the opening and closing degree of the valve body 301 by advancing the valve stem 304 by a predetermined amount of eccentricity; A camshaft 315 fitted through the valve cover 302 to the cam 312; A handle 316 installed at an end of the cam shaft 315 to eccentrically rotate the cam 312; And a gauge block 318 installed between the handle 316 and the valve cover 302 while being connected to the handle 316 to measure a rotation angle of the handle 316 to indicate a maximum sealing limit of the valve. do.

The valve chamber from the inlet 301a to the disk 307 has a narrow inner diameter, and the valve chamber 302b downstream of the opening 301c, which is a closed point of the disk 307, has a wide inner diameter so that fluid resistance generated as the fluid flows. It is designed to minimize noise generated when fluid flow by minimizing In addition, when the valve chamber downstream of the disk is made wider in this way, since the fluid flow space around the coil spring 309 is wider than when the valve chamber is narrow, foreign matters can be reduced and the life of the valve can be extended.

By the movement of the cam 312, the coil spring 309, the disk 307, the bias spring 310, etc., coupled with the valve seat 304, must be moved in a straight line within the valve chamber. It is possible by the valve stem support member 303 to which the 304 is fixed. That is, as shown in FIGS. 5A and 5B, the cam case 311 is integrally formed or coupled, and the valve stem supporting member 303 is provided with a coupling hole 303 a to fix the valve stem. At least two guide members 303b having the same radius as the seal inner surface are provided.

A stopper 319 provided protruded upward on an outer circumferential surface of the handle 316 to limit rotation of the handle 316 so that it is rotated only by a predetermined angle (180 ° in this embodiment); The fixing piece 320 is fixed to prevent the handle 316 from flowing.

A fixing nut 305 is provided on an outer surface of the bias spring support member 306 to prevent the valve stem 304 from being separated, and an O-ring (0) is formed on a contact surface of the cam shaft 315 and the valve cover 302. 314 is installed.

In this embodiment, the opening and closing angle of the opening of the valve body 301 is adjusted by using the cam 312. As shown in FIG. 7A, the user rotates the handle 316 and the cam shaft 315. ), The cam 312 is rotated by the rotation of the cam shaft 315, and the portions where the uppermost end of the cam 312 contacts the upper end of the cam case 311 according to the rotation of the cam shaft 315 are P1, P2, and P3. By continuously changing, the position of the cam case 311 can be changed, and the baseline L, which is the maximum sealing limit of the disk, is changed. At this time, the valve stem support member 303 maintains the movement of the disk in a straight line to help the opening and closing of the valve accurately.

In addition, the amount of opening and closing of the valve chamber can be adjusted by screw or gear, and the electric motor instead of the handle is provided so that the baseline, which is the maximum sealing limit of the valve disc, can be adjusted at a long distance by the remote control method by the electronic device. You may.

Looking at the structure of the screw method shown in Figure 7b as an example, a knob 351 is mounted on the outer surface of the valve cover 302, the Arabic numeral is engraved on the knob 351 to indicate the valve opening and closing degree have. The knob 351 is mounted with a screw 352 penetrating the valve cover 302, and the screw 352 is screwed to the valve stem support member 303. Accordingly, as the knob 351 is rotated to the open side or the close side, the screw rotates to advance the valve stem support member 303 back and forth, and thus the valve stem 304 and the disk 307 are interlocked together. By moving to adjust the maximum sealing range of the valve disk (307).

In addition, in the case of the gear system, as shown in Figure 7c, the valve stem support member 303 is provided with a shaft 361, the shaft 361 is equipped with a bevel gear 362, the shaft ( 361 is connected to the driving side of the bevel gear 362, and the knob 363 is provided on the driven shaft of the bevel gear 362 to adjust the maximum sealing range of the valve disk 307. That is, as the knob 363 rotates, the valve stem support member 303 connected to the shaft 361 by the bevel gear 362 moves to move the valve stem 304 and the disk 307. .

Referring to the working state of the present invention configured as described above are as follows.

First, when a fluid at a temperature at which the coil spring 309 does not respond to the valve chamber of the valve body 301 flows, the disk 307 is pushed by the one-way pressing force of the bias spring 310, so that the valve body 301 The valve chamber opening is in the open position. At this time, since the expansion force is not applied to the coil spring 309, the coil spring 309 is compressed by the maximum elastic force of the bias spring 310. However, since the disk 307 is caught by the stepped portion 304a formed in the valve seat 304 and further movement is restricted, the coil spring 309 is no longer compressed and is kept in the minimum shrinkage state. This structure can extend the life of the valve because the coil spring 309 is not excessively compressed.

In the open state of the valve chamber, the fluid having a predetermined temperature is discharged to the outlet 301b through the inlet 301a of the valve body 312. At this time, when the temperature of the fluid flowing through the inlet 301a reaches the intrinsic sensitivity temperature range of the coil spring 309, the coil spring 309 gradually expands and the bias spring 310 is pressurized Overcoming the pressing force, the disk 307 is pushed to shield the opening 301c of the valve body 301.

At this time, the user can be provided with a fluid of the desired temperature by adjusting the cam mechanism. This will be described with reference to Figs. 7A and 8A and 8B. In the case where the minimum thickness P1 of the cam 312 and the cam case 311 are in contact with each other in FIG. 7A, as shown in FIG. 8A, the valve disc 307 coupled to the cam case 311 and the valve seat 304 is provided. ) Has a baseline L which is the maximum sealing limit on the lowermost opening phase 301c which completely seals the valve chamber at the expansion and response temperature of the coil spring 309.

When the fluid having a temperature above the expanding temperature of the coil spring 309 is to be provided, the handle 316 is rotated to rotate the cam 315. As shown in FIG. The cam case 311 is moved upward by changing the contact points of the cam 312 and the cam case 311 to P2 and P3 due to the eccentricity. In this case, as shown in FIG. 8B, the valve disk 307 coupled with the valve seat 304 connected to the cam case 311 is positioned at a predetermined distance from the valve chamber opening 301c at the expansion response temperature of the coil spring 309. The baseline (L ') is the maximum sealed limit at, the valve chamber is not completely sealed at the induction temperature, and by minimizing the flow rate, the temperature can be passed through the appropriate amount of fluid above the induction temperature.

Accordingly, the distance between the valve chamber opening and the baseline L 'of the valve disc 307 is adjusted according to the angle of the handle 316, so that the fluid temperature in the indoor heating pipe passing through the valve can be set. .

As described above, the valve chamber opening and closing amount of the valve body 301 may be determined according to the rotation angle of the handle 316 regardless of the temperature of the fluid. When the handle 316 is rotated 180 °, the maximum opening and closing amount is obtained. . At this time, by measuring the rotation angle of the handle 316 through the gauge block 318 it is possible to adjust the opening and closing amount of the valve chamber of the valve body 301, and also the ballme body 312 according to the temperature required by the user It is to control the opening and closing degree of the valve chamber opening. Even if the handle 316 is turned as far as possible in the above process, since the rotation is limited by the stopper 319, the rotation range of the handle 316 is determined only within the range of 0 to 180 °. Turn 320 to secure the handle 316. In addition, the valve stem 304 makes the stroke S (the stroke corresponding to the maximum amount of rotation of the handle) to which the disk 307 moves, and keeps the stretching length of the coil spring 309 from leaving the stroke. To extend its life.

In addition, the gauge block may indicate an elevated room temperature according to the angle of the handle so that the user may easily adjust the temperature.

When such a valve configuration is used as the return valve 31 of FIG. 1, a process of controlling room temperature is as follows.

Even if the plurality of rooms R1, R2, and R3 are provided with the same hot water heated in a heating facility such as a boiler, the rate at which the rooms are heated varies depending on the distance from the heating facility and the area of the room. Therefore, unless the water supply valve 21 of the water supply unit 20 is adjusted, the heating time and room temperature of the room are not uniform.

However, when the flow control valve according to the present invention is used as the return valve 31, when the room is small and close to a heating facility such as a boiler, for example, the room R1 is first heated, the room R1 is heated. The return valve 31 connected to the end of the circulating pipe 40 is shielded, and the return valve 31 of the other rooms R2 and R3 is kept open. Therefore, the hot water is supplied to only the other rooms R2 and R3 from the water supply unit 20 so that the hot water is supplied to the rooms R2 and R3 that are warmed up later. Subsequently, when the large area but narrow area R3 reaches the set temperature before the room R2 farthest from the boiler, the return valve 31 connected to the end of the room R3 is automatically shielded. In this case, the hot water is supplied intensively to the lowest temperature room R2 to uniformly heat all the rooms in the shortest time.

At this time, if the room that reaches the set temperature cools first and the water temperature in the pipe 40 becomes lower than the set temperature, the return valve 31 is opened by the contraction of the coil spring 309 which automatically responds to the temperature, so that the hot water cools in the room. It will be supplied again to maintain the temperature.

Therefore, a plurality of rooms can also be heated to uniform temperature in the shortest time, and the temperature can also be maintained automatically. Therefore, it is possible to reduce heat loss, resulting in fuel savings.

At this time, if you want to set the temperature of each room differently, each handle 316 provided in the return valve of each room is rotated by the desired temperature displayed on the gauge block 318, respectively, so that it can be quickly heated and maintained at the set temperature of each room do.

In addition, since the valve chamber of the return valve is formed to have a wide inner diameter downstream from a portion where the outlet inlet is sealed by the disk, the return chamber has an effect of reducing noise during fluid passage.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, according to the present invention, in particular, the valve used for the return valve of a heating facility such as a boiler has a simple structure using a coil spring made of a shape memory alloy, and opens and closes the fluid passage of the valve according to the temperature of the hot water. By controlling the flow rate of the valve, by controlling the opening amount of the valve passage by using the eccentric difference of the cam, the fluid is supplied to the room temperature required by the user even outside the range of the operation of the coil spring, the plurality of rooms heated by the boiler It can be heated uniformly in the shortest time, there is an effect that can be set differently the temperature of each room through the opening and closing amount adjusting means.

In addition, according to the present invention, since the fluid outlet inlet of the valve and the inner diameter of the valve chamber are the same, the resistance of the fluid can be reduced when the fluid passes the valve, thereby minimizing noise.

1 is a conceptual diagram schematically showing the structure of a boiler and hot water supply piping in a modern ondol structure home.

Figure 2 is a schematic diagram showing the configuration of a general valve device.

Figure 3 is a configuration diagram of an embodiment of a thermostatic valve according to the prior art.

Figure 4 is a configuration diagram showing a case in which the automatic temperature control valve of Figure 3 is open.

Figure 5a is a cross-sectional view showing the overall configuration of the flow control valve capable of adjusting the room temperature according to the present invention.

FIG. 5B is a bottom view of the valve stem support member for guiding the movement of the disk for opening and closing the valve in the configuration of FIG. 5A; FIG.

Figure 6 is a cross-sectional view for explaining the operation of the flow control valve capable of adjusting the room temperature according to the present invention.

Fig. 7A is a sectional view for explaining the cam structure of the first embodiment in which the opening and closing amount adjusting means, which is a main part of the present invention, is made of a cam;

Figure 7b and Figure 7c is a cross-sectional view showing the configuration of another embodiment of the opening and closing amount adjustment means that is the main part of the present invention.

8A and 8B are sectional views showing states of the disk and the valve chamber in the process of adjusting the opening and closing amount according to the present invention;

* Explanation of symbols for main parts of the drawings

301: valve body 302: valve cover

303: valve stem support member 304: valve stem

306: guide plate 307: disk

308: alignment ring 309: coil spring

310: bias spring 311: cam case

312: cam 315: camshaft

316: handle 318: gauge block

Claims (10)

A valve body having a predetermined size formed therein, the valve body having an outlet passage pipe for fluid at a predetermined position; Expansion and contraction means built in the valve chamber of the valve body and made of a shape memory alloy which expands at a specific temperature and expands and contracts as the temperature of the fluid is elevated based on a set value; A disk which is inserted into the expansion and contraction means and moves in the fluid flow direction in the valve chamber of the valve body in accordance with the expansion and contraction operation thereof to open and close the passage of the fluid; And It is mounted to the valve chamber of the valve body includes an opening and closing amount adjusting means for adjusting the opening angle of at least one portion of the inlet and outlet of the valve, The valve inner diameter of the valve downstream of the disk is wider than the inlet side of the fluid inflow and outflow pipe to minimize noise when the valve is shielded. Flow control valve for room temperature control. The method of claim 1, A valve cover screwed to one end of the valve body and in communication with the valve chamber thereof, the valve cover having an inner space formed to position the opening / closing adjustment means; Valve seat is installed in the fluid flow direction across the valve body and the inner space of the valve cover, the valve seat is mounted to the outer peripheral surface so as to move Flow rate control valve that can further control the room temperature. The method of claim 2, The valve stem is formed so that its predetermined portion is stepped so that the disk is not excessively shrunk by more than the stroke distance. Flow control valve for room temperature control. The method of claim 2, A bias spring for providing a one-way pressing force to the disk to open the opening of the valve chamber; A bias spring support member having an outer circumferential surface fitted to an inner space portion of the valve body and supporting one end of the valve stem on an inner surface thereof to support the bias spring; And Alignment ring for stably aligning the position of the bias spring is located on the valve stem in the axial direction on one side of the bias spring support member Flow rate control valve that can further control the room temperature. The method according to claim 1 or 2, Opening and closing amount adjusting means, A cam case provided on an outer surface of the valve stem support member; A cam inserted into the cam case, the cam moving forward or backward along the fluid flow direction to move the maximum sealing limit of the disk; A camshaft fitted to the cam through the valve cover; A handle installed at an end of the camshaft for a user to generate an eccentric motion of the cam Flow rate control valve capable of adjusting the room temperature. The method of claim 5, wherein It is installed between the handle and the valve cover further comprises a gauge block for measuring the rotation angle of the handle to know the maximum sealing limit of the disk Flow control valve for room temperature control. The method of claim 6, A stopper protruding upward on an outer circumferential surface of the handle to limit its rotation; And Fixing piece that is axially fitted to the handle to prevent the handle from flowing Flow rate control valve that can further control the room temperature. The method according to claim 1 or 2, The opening and closing amount adjusting means, A cam case provided on an outer surface of the valve stem support member; A cam inserted into the cam case, the cam moving forward or backward along the fluid flow direction to move the maximum sealing limit of the disk; A camshaft fitted to the cam through the valve cover; An electric motor installed at an end of the camshaft to generate an eccentric motion of the cam, and a rotation angle of the camshaft for the eccentric motion of the cam controlled by a remote controller Flow rate control valve capable of adjusting the room temperature. The method of claim 1, The opening and closing amount adjusting means A knob mounted on an outer surface of the valve cover, and having a number for displaying valve opening / closing degree on one surface thereof; And One end is connected to the knob, and the other end is screwed to the valve stem support member penetrating the valve cover to drive the valve stem support member straight according to the rotation of the open side or the closed side of the knob Flow rate control valve capable of adjusting the room temperature. The method of claim 1, The opening and closing amount adjusting means A shaft provided in the valve stem support member; Bevel gear installed in the shaft; And A knob installed on the driven shaft of the bevel gear to adjust the opening angle of the valve. Flow rate control valve capable of adjusting the room temperature.