KR200223136Y1 - Fluid measune controling valve - Google Patents

Abstract

The present invention relates to a flow control valve that can cancel the pressure of the fluid acting on the disk during the opening and closing operation of the valve, and also capable of automatically controlling the flow rate in accordance with the temperature of the fluid flowing inside the valve, the rotary knob Inflow paths and outlets are formed on both sides of the control unit of the valve body rotatably assembled, and the upper and lower flow paths formed in the flow path part located inside the valve body while being extended inside the inflow path or the outflow path. In the valve for opening and closing the upper and lower disks, the lower end is opened and the thread formed on the outer circumferential surface thereof is screwed to the female screw while being inserted into the adjusting portion of the valve body, the upper end of the valve protruding long from the adjusting portion With a guide; Upper and lower disks are formed at the lower end to open and close the upper and lower flow paths, and the upper end of the valve stem is elastically installed as a return spring while being inserted deeply therein through the opened lower end of the valve guide; An upper SMA spring elastically installed between a lower end of the valve guide and an upper surface of the upper disk; And a lower SMA spring elastically installed between the lower surface of the upper disk and the upper surface of the lower disk.

Description

Fluid measune controling valve

The present invention relates to a flow control valve that can cancel the pressure of the fluid acting on the disk during the opening and closing operation of the valve, and also can automatically control the flow rate in accordance with the temperature of the fluid flowing through the valve.

In general, the valve is installed in the pipeline through which the fluid flows to block the flow of the fluid or to control the flow rate.

As shown in FIG. 5, the most common valve of the related art has an inflow path 101 and an outflow path 102 formed at both sides of the valve body 100, and a partition wall partitioning the inflow path and the outflow path therein ( A flow path 104 is formed in the 103, and a disk 106 for opening and closing the flow path 104 is formed at a lower end of the valve rod 105 that is screwed up and down through the upper portion of the valve body 100. As a structure to block the flow rate flowing through the valve body 100 is configured to block or adjust.

However, the valve having the structure as described above is mainly used when the flow rate flowing through the pipeline is low flow rate and low pressure. When the fluid flows through the inflow path 101 and then flows out to the outflow path 102, the flow path ( Since the disk 106 for opening and closing 104 is directly affected by the water pressure on the inflow path 101 side, the hydraulic pressure of the fluid causes the disk to open when the disk 106 is blocking the flow path 104. While pushing the 106, the opening operation of the disk 106 is not exerted. On the other hand, when the disk 106 is to be closed, the hydraulic pressure of the fluid is in a state of suppressing the closing operation of the disk 106. On the contrary, when the flow of fluid flows through the outflow passage 102 to the inflow passage 101, the hydraulic pressure on the outflow passage 102 is increased. Act on the top of the The closing operation of the disc 106 takes less force, but the opening operation takes much force.

Therefore, the valve as described above has been pointed out as a problem that it is difficult to precisely control the flow rate because the disk 106 is less force when moving in the flow direction of the fluid, while the force is higher when it is opposite to the flow direction of the fluid. In addition, when remotely controlling the valve, it is necessary to use an actuator having a large capacity for operating the valve rod 105 in consideration of the hydraulic pressure applied to the disk when the disk 106 operates in a direction opposite to the flow direction of the fluid. It is pointed out as a problem.

6 is a structure capable of reducing the influence of the fluid pressure, the inlet passage 201 and the outlet passage 202 is formed on both sides of the valve body 200, the inlet passage 201 valve Upper and lower disks that extend into the body 200 and then form upper and lower flow paths 203 and 204 on the upper and lower sides and the valve rod 205 can simultaneously control the blocking or opening of the upper and lower flow paths. A valve having a structure in which 206 and 207 are formed, the fluid pressure of the fluid acting on the lower surface of the upper disk 206 and the upper surface of the lower disk 207 simultaneously when the fluid is introduced through the inflow passage 201. When the valve rod 205 is operated to open the upper and lower disks 206 and 207 in the upper and lower flow paths 203 and 204, water pressure is applied to the upper disk 206. While internal action appears, the lower disk 207 acts to suppress water pressure at the same time, so the upper and lower D Hydraulic pressures acting against the disks 206 and 207 cancel each other and, conversely, when the upper and lower disks 206 and 207 are blocked, the upper and lower disks 206 ( 207) the pressures acting opposite to each other cancel each other, the valve of the above structure has the advantage that the water pressure does not affect the opening and closing operation of the valve rod 205 except for the water hammer action of the pipe, In addition, it provides an advantage to enable the remote control by using an actuator having a capacity to rotate the valve rod 205.

However, it is pointed out that the valve as described above has a problem that only the valve rod 205 itself may be moved to block or adjust the flow of the fluid, but the flow rate cannot be adjusted according to the temperature change of the fluid flowing through the pipe.

The present invention was created to solve the problems of the prior art as described above and further provide a valve that can automatically control the flow rate according to the temperature change of the fluid, the valve is assembled to the valve body to open and close the valve valve It is a structure that elastically installs the valve stem assembled in the guide with a spring and elastically installs each of the upper and lower disks formed on the lower and upper ends of the valve stem with a shape memory alloy spring (hereinafter referred to as SMA spring). According to the temperature of the fluid flowing through the SMA spring to automatically block or open the flow path to control the flow of the fluid, and also the upper SMA spring of the SMA springs elastically installed on the upper and lower disks When the fluid flowing in the valve body is hot water, the elastic force is applied when the temperature of the hot water exceeds the set temperature. By restoring the disk by restoring the disk, it is possible to supply hot water efficiently by blocking the excessive supply of hot water, while the lower side SMA spring loses the elastic force when the temperature of the cold water is below the set temperature when the fluid is cold water. Another purpose is to prevent the freezing of the cold water in the pipeline to prevent freezing in advance by allowing the water to be opened by water pressure.In addition, the flow rate indicator is displayed on the rotary knob to precisely control the flow rate through the valve. There are other objects, and the present invention is also designed to mount an actuator on one side of the rotary knob, and has been devised for other purposes in order to enable remote control of the actuator.

The present invention as a means for achieving the above object,

Inflow paths and outlets are formed on both sides with respect to the control portion of the valve body is rotatably assembled to the valve body, and formed in the flow path portion which is located inside the valve body while extending inwardly of the inflow path or outflow path, In the valve in which the upper and lower disks for opening and closing the lower flow path,

The lower end is opened and the thread formed on the outer circumferential surface is screw-assembled to the female screw while being inserted into the adjusting portion of the valve body, the upper end is a valve guide protruding long from the adjusting portion;

Upper and lower disks are formed at the lower end to open and close the upper and lower flow paths, and the upper end of the valve stem is elastically installed as a return spring while being inserted deeply therein through the opened lower end of the valve guide;

An upper SMA spring elastically installed between a lower end of the valve guide and an upper surface of the upper disk; And

A lower SMA spring elastically installed between the lower surface of the upper disk and the upper surface of the lower disk;

It is characterized by consisting of

In addition, an internal tooth spline is formed in the upper portion of the rotary handle that is assembled to be rotated in place to the control unit of the valve body, and the external tooth spline formed on the outer periphery of the valve guide to slidably engage the rotation knob It characterized in that the valve guide is configured to open and close the disk according to the rotation operation,

In addition, a flow rate indication scale is formed on the outer circumference of the rotary knob, and the flow control indicator needle is fixed to the control part of the valve body.

In addition, the upper SMA spring is to restore the elastic force when the hot water temperature is above the set temperature, the lower SMA spring is characterized in that the elastic force is lost when the cold water temperature is below the set temperature,

In addition, the actuator is fixed to one side of the adjustment portion of the valve body, characterized in that the drive gear of the actuator is fitted to the external spline of the valve guide.

1 is a front view of the present invention.

2 and 3 is a cross-sectional view of the operating state when opening and closing the valve of the present invention.

4 is another embodiment of the present invention.

5 and 6 are cross-sectional valves of the prior art.

※ Explanation of code for main part of drawing

1: valve body 2a, 2b: inlet and outlet

3: flow path part 4: valve guide

5: Valve stem 6: Return spring

7a, 7b: Upper and lower SMA springs 8: Rotating handle

9: Actuator 11: control unit

11a: female thread part 12: inflow path

13: outflow path 14: lower cap

31,32: upper and lower flow paths 42: external spline

52,54: upper and lower disk 53: extending lower

53a: pin hole 55: fastening pin

81: internal spline 82: planted groove

83: rotation guide member 84: flow rate indicator

85: flow rate indication 86: gear

91: drive gear

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of the present invention, Figures 2 and 3 is a cross-sectional view of the operating state when opening and closing the valve of the present invention, Figure 4 shows another embodiment of the present invention,

Reference numeral 1 denotes a valve body, and the valve body 1 has an inflow passage 12 and an outlet passage 13 formed on both sides of the control unit 11 protruding from the middle portion thereof. Each of the inflow passage and the outflow passage is provided with a female and male screw for connecting the inflow passage 2a and the outflow passage 2b.

The flow path portion 3 formed in the valve body 1 may be formed in a state extending from the inflow passage 12, as shown in the embodiment shown in the drawing, or in a state extending from the outflow passage 13 It can be formed as.

One side of the flow path portion 3 is open to communicate with the inflow passage 12, the opposite side is closed, the cylindrical portion extending into the valve body 1 in the upper and lower flow paths facing up and down 31 and 32 are formed, and the upper and lower flow paths 31 and 32 are drilled toward the adjusting unit 11.

The valve guide 4 and the valve stem 5 are assembled beforehand to the valve body 1 and then assembled before the valve guide 4 and the valve stem 5 are assembled to the valve body 1.

The upper end of the valve stem (5) is elastically installed by the return spring (6) in the state inserted through the lower end of the valve guide (4), the lower end of the return spring (6) is the inner side of the valve guide (4) It is installed in a structure in which the elastic modulus is adjusted by the tightening force of the nut 51 screwed to the upper end of the valve stem 5 in the state of being caught on the step.

The upper SMA spring 7a accommodated in the storage space formed at the lower end of the valve guide 4 is elastically installed on the upper surface of the upper disk 52 formed at the lower end of the valve stem 5, and the upper disk 52 The lower disk 54 is coupled to an extended lower end 53 extending downward, and the lower SMA spring 7b is elastically installed between the lower surface of the upper disk 52 and the upper portion of the lower disk 54.

The lower disk 54 is inserted through the inflow path 12 of the valve body 1 to be fastened to the fastening pin 55 in a state fitted to the lower end 53 of the valve stem 5, and the fastening pin 55. The pin hole 53a of the lower and lower end 53 through which the 55 penetrates has a larger cross-sectional area than the cross section of the fastening pin 55 so that the fastening pin 55 can move upward and downward ( It is configured so that S) is formed.

In addition, the upper end of the guide pin 56 fixedly inserted into the upper surface of the lower cap 14 is inserted in the guide hole 54a formed at the lower end of the lower disk 54 so as to be slidable.

Each of the upper and lower SMA springs 7a and 7b is a spring made of a shape memory alloy, and the upper SMA spring 7a is heated to a predetermined temperature so that the temperature of the fluid flowing through the valve body 1 is higher than or equal to the set temperature. In this case, the strong elastic force is recovered, and when the fluid temperature is lower than the set temperature, the elastic force is processed to have a property of losing the elastic force. The lower SMA spring 7b is present in the outlet pipe line 2b connected to the valve body 1. If the fluid to be below a certain temperature (5 ℃ or less) is processed to have a property that the elastic force is weakened or lost.

The screw portion 41 at the lower end of the valve guide 4 is assembled to the female threaded portion 11a formed at the inner bottom of the adjusting portion 11 of the valve body 1 to lower the valve stem 5 and the valve. Allows the stem 5 to operate upwardly, and the external toothed spline 42 formed on the outer circumferential surface of the upper end of the valve guide 4 is slidable to the internal toothed spline 81 formed on the inner upper end of the rotary knob 8. The rotary knob 8 is assembled to the adjusting unit 11 to be rotatable in place.

The assembly structure of the rotary knob 8 is as follows.

Guide grooves 11c which are formed to communicate with the one side of the ring groove 11b formed at the periphery of the adjusting part 11 and the plurality of assembly grooves 82 formed at regular intervals at the lower end of the rotary handle 8 While being fitted in the assembly groove 82 while elastically opening the rotation guide member 83 to both sides to match in turn on both sides protrusions (83a) protruding symmetrically to face both sides of the rotation guide member (83) While the groove 82 is held, the one side protrusion 83b protruding toward the ring groove 11b is slidably fitted into the ring groove 11b, so that the rotary knob 8 is assembled to each assembly groove 82. And it is assembled in a state capable of rotating only in place by a plurality of rotation guide members 83 assembled to be caught in the ring groove (11b).

After the assembly of each of the rotation guide members 83 is completed, the flow indication indicator needle is screwed with a screw while the attachment portion 84a of the flow indication indicator needle 84 is in close contact with the guide groove 11c. When the 84 is fixedly attached to the adjusting unit 11, the guide grooves 11c are blocked, so that each of the rotary guide members 83 coupled to each of the assembly grooves 82 of the rotary knob 8 is closed. This will prevent relaxation.

In addition, the flow rate indicator indicator 84 fixedly attached to the control unit 11 indicates the flow rate indication scale 85 displayed on the outer circumferential surface of the rotary knob 8, such a flow rate indication indicator 84 is It is possible to adjust the flow rate flowing through the valve by means of confirming the flow rate indication scale 85 instructed.

4 is an embodiment to automatically open and close the valve by a remote control method, the actuator 9 is fixedly installed on one side of the control unit 11 of the valve body 1 and then the actuator 9 ), The drive gear 91 is engaged with the external toothed spline 42 of the valve guide 4 exposed above the adjusting part 11.

The actuator 9 can not only open and close the valve by remote control using a remote control, but also automatically adjust the flow rate by controlling the rotation operation of the valve guide 4.

In addition, the actuator 9 of the above embodiment may be constituted by a servo motor or a step motor which can be operated by remote control.

Referring to the operation of the present invention as follows.

When the rotary knob 8 assembled to the control unit 11 of the valve body 1 is rotated, the rotary knob 8 rotates only in place by the rotation guide member 83, while the internal spline ( 81, the valve guide (4) in which the external tooth type spline (42) is engaged is rotated by receiving the rotational force so that the valve guide (4) is guided by the female threaded portion (11a) of the adjuster 11 to move up and down As a result, the upper and lower disks 52 and 54 are lifted together to block or open the upper and lower flow paths 31 and 32. The upper and lower flow paths formed in the flow path part 3 as described above. The upper and lower disks 52 and 54 which block or open the 31 and 32 are the rotary knobs because the pressures of the fluids acting on the upper and lower disks cancel or relieve each other, as in the valve of FIG. The rotational operation of (8) is not stressed.

The valve of the present invention is installed in a pipeline for heating hot water or cold water to control the flow of fluid, that is, to prevent flow or freezing. First, the valve is installed in a pipeline for heating hot water to automatically adjust and control the flow rate of hot water. An embodiment is described as follows.

In rotating in the opening direction of the rotary knob 8, in the flow rate display scale 85 in which the flow amount of the fluid is displayed on the outer circumferential surface thereof, the desired flow rate display scale is rotated until it matches the flow rate display indicator 84. Accordingly, the valve guide 4 rotates to increase the valve guide 4. As a result, the valve stem 5 also rises to open the upper and lower flow paths 31 and 32 as the upper and lower disks 52 and 54 rise. At this time, the pressure of the fluid acting on the upper and lower disks (52) and (54) to open the upper and lower flow paths (31, 32) cancel each other, so that the pressure of the fluid during the rotation operation of the rotary knob (8) Since it is not affected, the rotary knob 8 can be rotated smoothly.

As described above, when the rotary knob 8 is rotated to open the upper and lower passages 31 and 32 at appropriate intervals, the hot water introduced into the inflow passage 12 is opened, and the upper and lower passages 31 and 32 are opened. The flow of hot water flowing through the upper and lower flow paths is transmitted to the upper and lower SMA springs 7a and 7b. The upper SMA spring 7a is a hot water temperature. Is a temperature of more than a predetermined temperature and has a property to recover the elastic force, and the elastic force of the upper SMA spring (7a) is configured to exhibit a stronger elasticity than the elastic force of the return spring (6).

Therefore, as described above, the upper and lower disks 52 and 54 open the upper and lower flow paths 31 and 32 to continuously allow the flow of hot water, and the hot water supplied to the inlet pipe 2a is higher than the set temperature. When the superheated temperature is supplied, the superheated temperature of the hot water is transmitted to the upper SMA spring 7a, so that the upper SMA spring 7a recovers elastic force and elastically pushes the upper disk 52, thereby allowing the valve. The stem 5 itself moves toward the flow path portion 3, so that the upper and lower disks 52 and 54 block the upper and lower flow paths 31 and 32 (see the virtual line portion in FIG. 2).

As described above, the upper and lower disks 52 and 54 block the upper and lower flow paths 31 and 32 by the elastic force recovery operation of the upper SMA spring 7a. 7a) is to continue until the loss of elastic force to control the superheated hot water is supplied to the outlet pipe (2b), when the flow of hot water is blocked the upper SMA spring (7a) gradually decreases the temperature After a certain time, the upper SMA spring 7a loses its elastic force, and accordingly, the valve stem 5 is raised by the elastic restoring force of the return spring 6 to open the upper and lower flow paths 31 and 32. It will allow the flow of hot water.

The upper SMA spring 7a as described above receives heat conduction of the hot water flowing through the valve body 1 and when heated to a temperature higher than the set temperature, recovers elastic force and operates the valve stem 5 to operate the upper and lower flow paths 31 ( 32) and shuts off below the set temperature again to lose the elastic force to control the flow of hot water while repeating the operation to return the return spring (6) to the valve stem (5) to the open state.

Next, when the inlet pipe 2a side is piped indoors and the outlet pipe 2b is piped outside, in the state where the fluid flows continuously by opening the upper and lower flow paths 31 and 32 of the valve body 1. In winter, the fluid flowing outside the outlet pipe passage 2b that does not freeze does not appear, but when the flow of the fluid is stopped by blocking the upper and lower flow passages 31 and 32, the inside of the outlet pipe passage 2b is stopped. The fluid, that is, cold water is directly affected by the outdoor temperature, and when the outdoor temperature is 0 ° C. or lower, the cold water in the outlet pipe 2b freezes. Also, the cold water in the outlet pipe 2b appears. The temperature is transmitted to the lower SMA spring 7b through the lower disk 54 blocking the lower flow path 32. The lower SMA spring 7b is processed to lose elastic force at low temperature (0 to 5 ° C). It is.

As described above, when the cold water in the outlet pipe passage 2b is gradually changed to a low temperature under the influence of the outdoor temperature, the low temperature is lowered through the lower SMA spring through the lower disk 54 blocking the lower flow path 32. When it is delivered to 7b), the upper and lower SMA springs lose elastic force, and the lower disk 54 is raised by the gap S formed in the pinhole 53a by the hydraulic pressure of the cold water in the outlet conduit 2b. Thus, a gap is formed in the lower flow path 32 so that the cold water flowing in the inflow pipe 2a flows into the outflow pipe path 2b or the cold water in the outflow pipe path 2b flows in the inflow pipe path 2a (FIG. 3), thus, the cold water on the outlet pipe 2b side continuously flows to prevent freezing and prevent freezing of the outlet pipe 2b.

Next, the embodiment of Figure 4 is an embodiment that can be automatically opened and closed by remotely controlling the valve, this embodiment according to the operation when the user operates the remote control on / off switch and selection button of the remote control The actuator 9 is operated in the forward or reverse direction, and as a result, the drive gear 91 rotates to rotate the valve guide 4 in the forward or reverse direction, thereby causing the upper and lower disks 52 and 54 to move upward and downward. The lower flow paths 31 and 32 are opened or blocked, and the opening operation of the upper and lower discs 52 and 54 can be remotely controlled according to the flow rate passing through the upper and lower flow paths 31 and 32. As such, when the embodiment is applied to the valve of the cold / hot water distributor, such as apartments, apartments, the user can automatically adjust the flow rate of cold and hot water by remote control means cold and hot water It can receive effective supply.

According to the present invention as described above as a means for elastically installing the upper and lower disks formed on the valve stem with a spring made of a shape memory alloy, when the temperature of the hot water flowing through the valve body is higher than the set temperature, the supply of hot water is automatically controlled. Energy efficiency can be saved by adjusting efficiently. When the fluid in the outlet side is lower than the set temperature, the lower disk is automatically opened finely to allow the fluid to flow without stagnation. It is effective in preventing cold water, and it is not affected by the pressure of the fluid in the rotation operation of the rotary knob, so it is easy to open and close the valve and remotely control the valve using the actuator to receive cold and hot water effectively. It is a useful design that provides the advantages.

Claims (5)

Inflow paths and outlets are formed on both sides with respect to the control portion of the valve body is rotatably assembled to the valve body, and formed in the flow path portion which is located inside the valve body while extending inwardly of the inflow path or outflow path, In the valve in which the upper and lower disks for opening and closing the lower flow path, The lower end is opened and the thread formed on the outer circumferential surface is screw-assembled to the female screw while being inserted into the adjusting portion of the valve body, the upper end is a valve guide protruding long from the adjusting portion; Upper and lower disks are formed at the lower end to open and close the upper and lower flow paths, and the upper end of the valve stem is elastically installed as a return spring while being inserted deeply therein through the opened lower end of the valve guide; An upper SMA spring elastically installed between a lower end of the valve guide and an upper surface of the upper disk; And A lower SMA spring elastically installed between the lower surface of the upper disk and the upper surface of the lower disk; Flow control valve characterized in that the configuration. The method of claim 1, The internal knob spline is formed in the upper portion of the rotary knob that is assembled to enable the in-situ rotation of the valve body and the external tooth spline formed on the outer periphery of the valve guide to slidably engage the sliding knob. Flow control valve, characterized in that configured to enable the valve guide to open and close the disk according to the rotation operation. The method of claim 1, A flow rate control valve is formed on the outer circumference of the rotary knob, and a flow control indicator needle is fixed to the control part of the valve body. The method of claim 1, The upper SMA spring is to restore the elastic force when the hot water temperature is above the set temperature, the lower SMA spring is configured to lose the elastic force when the cold water temperature is below the set temperature. The method of claim 1, An actuator is fixedly installed on one side of the valve body, and a drive gear of the actuator is engaged with the external spline of the valve guide.