KR20060062807A - Auto flow ratio control valve - Google Patents

Abstract

The present invention relates to an automatic flow control valve, and more particularly, by using the shape memory spring to control the elastic force of the shape memory spring according to the temperature, the flow rate and the set room temperature and the flow through the inside of the valve through the opening and closing of the upper and lower flow path It relates to an automatic flow rate control valve that can automatically control the flow rate according to the temperature of the hot water.

The automatic flow rate control valve according to the present invention has an inlet and an outlet formed on both sides of the rotatable assembled control unit coupled to the valve body, and are formed in the flow path part located inside the valve body while extending therein. In the valve for opening and closing the lower flow path, the lower end is opened and the threaded portion formed on the outer peripheral surface of the upper end is inserted into the adjusting portion and the spring guide screw assembly, the lower end is opened and the upper end is opened through the open lower end of the spring guide The upper disk is inserted and opening and closing the upper flow path, the upper end is inserted into the inside through the lower end of the upper disk and the valve spring guide is installed in the lower end is installed therein, the lower end is opened and the upper end of the valve spring The lower disc is inserted into the inside of the guide through the lower end of the guide and opens and closes the lower flow path. And a lower spring guide inserted into the lower end of the lower disk, an upper shape suppressing spring inserted into the lower end of the spring guide and elastically installed on the upper surface of the upper disk, and elastically installed on the upper surface of the lower cap and the lower surface of the lower disk. The lower shape of the spring and the outlet is characterized in that the temperature control unit for adjusting the flow rate according to the set room temperature.

Automatic flow control valve, shape memory spring, upper disk, lower disk, control part, spring guide, temperature control part

Description

Auto flow ratio control valve

Figure 1 Automatic flow rate control valve according to a preferred embodiment of the present invention

Figure 2 Automatic flow rate control valve according to another embodiment of the present invention

3 is a cross-sectional view of a valve with only a top disc of the prior art;

4 is a cross-sectional view of a valve having only the upper and lower disks of the prior art

Figure 5 is a cross-sectional view of the flow control valve of the prior art

6 is a cross-sectional view of another conventional flow control valve

<Explanation of symbols for the main parts of the drawings>

1, 101, 201, 301: valve body 2: inlet 3: outlet

4: Euro part

   4a: upper flow path 4b: lower flow path

5, 206, 305: Upper disk 6, 207, 306: Lower disk

11: control unit

12: spring guide 13: hole

14: valve spring guide

15: lower cap

16: Lower Spring Guide

17: rotation guide member

21: upper shape retaining spring

22: Lower geometry spring

23: compression spring

40: temperature controller

   41: outlet valve 42: rotation 43: actuator 44: drive gear

   45: driven gear 46: outflow

302: inlet pipe 303: outlet pipe

311: upper SMA spring 312: lower SMA spring

The present invention relates to an automatic flow control valve, and more particularly, by using the shape memory spring to control the elastic force of the shape memory spring in accordance with the opening and closing of the upper and lower flow paths to control the flow rate flowing inside the valve or set room temperature It relates to an automatic flow control valve for controlling the flow rate in accordance with.

In general, the valve is a device installed in the pipeline through which the fluid flows to block the flow of the fluid or adjust the flow rate, the most common valve is shown in Figure 3 and the inlet path 102 and both sides of the valve body 101 as shown in FIG. Outflow passage 103 is formed, the flow path 105 is formed in the partition 104 partitioning the inflow passage and the outflow passage therein, the valve rod 106 to go up and down through the upper portion of the valve body 106 The disk 107 is formed in the lower end of the) to open and close the flow path is configured to manually block or adjust the flow rate flowing through the valve body.

However, when the fluid flows through the inflow path and then flows out to the outflow path, when the fluid flows through the inflow path, the hydraulic pressure acts directly on the lower surface of the disc to suppress the closing operation of the disc. It is mainly used when the flow rate is small or low pressure.

On the other hand, the valve shown in Figure 4 is a structure that can reduce the influence of the fluid pressure, and extends the inlet passage 202 into the valve body 201 and then forms the upper and lower flow passages (204, 205), A valve having a structure in which upper and lower disks 206 and 207 are formed to block or open the upper and lower flow paths simultaneously. When opening the flow path, the hydraulic pressure acts on the lower surface of the upper disk and simultaneously lowers the flow path. As it acts on the upper surface of the disk, the hydraulic pressure is pushed out on the upper disk, while the hydraulic pressure is suppressed on the lower disk at the same time, so that the hydraulic pressures acting opposite to the upper and lower disks cancel each other out. do. On the contrary, in the case where the flow path is to be blocked, the hydraulic pressure acting on the upper and lower surfaces of the upper and lower disks cancel each other, so that the valve of the above structure has a hydraulic pressure except for the water hammer action of the pipe. It does not affect the opening and closing action.

Such a valve can only block or control the flow of the fluid only by moving the upper and lower disks directly, but cannot adjust the flow rate according to the temperature change of the fluid.

In order to solve these problems, Korean Patent Application No. 2000-0038906 proposes a valve for controlling the flow rate by automatically opening and closing the upper and lower flow paths according to the fluid temperature change by embedding a spring in the valve shown in FIG. 4.

However, the valve shown in FIG. 5 has a complicated structure, which is inconvenient to assemble. The inlet pipe 302 is piped indoors and the outlet pipe 303 is piped outdoors, while in the winter season when the flow of fluid is blocked, Since the cold water is frozen, the temperature of the cold water in the outlet pipe is transferred to the lower SMA spring 312 through the lower disk 304, the elastic force of the lower SMA spring is lost, the lower flow path is opened and fine hot water is supplied to the outlet pipe. Since the structure designed to prevent freezing of the outflow pipe or the hot water is filled in the inflow pipe, the temperature of the cold water cannot be properly transferred to the lower SMA spring through the lower disk, so the lower SMA elastic force is not lost and the lower flow path cannot be opened. Applicant has applied for the flow control valve shown in Figure 6 to solve this problem (Patent 2004-81047) It was.

However, the flow control valve shown in FIG. 6 has a problem that there is no automatic flow rate control function according to the room temperature set to prevent the freezing and automatic control of the flow rate using the elastic force of the shape memory spring according to the temperature change of the fluid.

The present invention has been invented to solve the above problems, the inlet and outlet are formed on both sides based on the rotatable assembled control unit associated with the valve body, which is located inside the valve body extending inside these In the valve for opening and closing the upper and lower flow path formed in the flow path portion, the lower end is opened and the screw portion formed on the outer circumferential surface of the upper end is inserted into the adjusting portion, the spring guide and the lower end is opened and the upper end is the spring guide An upper disk inserted into the lower part and opening and closing the upper channel of the flow path part, an upper end of the upper disk inserted into the inner part of the upper disk, and a lower end of the valve spring guide having a compression spring installed therein; Is opened and the upper end is inserted into the lower part of the flow path through the lower end of the valve spring guide. A lower disk guide for opening and closing a furnace, a lower spring guide fastened to the lower cap and inserted into an open lower end of the lower disk, and an upper shape suppressing spring inserted into an open lower end of the spring guide and elastically installed between the upper surface of the upper disk; The lower shape retaining spring, which is elastically installed between the upper surface of the lower cap and the lower disk, enables automatic flow control and freeze protection, and engages with the actuator and actuator's drive gear driven according to the room temperature set at the outlet. It is an object of the present invention to provide an automatic flow control valve for remotely controlling the flow rate according to the set room temperature is provided with a temperature control unit having an outlet valve for opening and closing the outlet flow path is coupled to the rotary unit and the rotating unit coupled to the driven gear.

In addition, by installing a flow control actuator on the valve body and joining the drive gear of the installed flow control actuator and the driven gear coupled to the control unit to operate the flow control actuator according to the set hot water temperature to adjust the control unit flow rate according to the set hot water temperature An object of the present invention is to provide an automatic flow control valve for remote control.

The present invention has been created to provide a valve for achieving the above object, the inlet and outlet are formed on both sides of the rotatable assembled control unit coupled to the valve body, the lower end is opened and the upper The thread formed on the outer circumferential surface is a spring guide inserted into the adjusting portion and assembled into a screw, a lower end is opened, and an upper end is inserted inward through an opened lower end of the spring guide, and an upper disc opens and closes an upper flow path of the flow path, and an upper end is The valve spring guide is inserted into the inside through the lower end of the disk and the compression spring is installed inside the lower end, and the lower end is opened and the upper end is inserted into the inside through the opened bottom of the valve spring guide. Lower disk for opening and closing the flow path, inserted into the lower end of the lower disk is fastened to the lower cap The lower spring guide, the upper shape of the spring spring is inserted into the lower end of the spring guide is installed elastically between the upper surface of the upper disk, the lower shape of the spring and the outlet is elastically installed between the upper surface of the lower cap and the lower disk The temperature control part controls the flow rate according to the room temperature and the actuator is installed on the valve body, and the drive gear of the installed actuator and the driven gear coupled to the control part are combined to open and close the upper and lower flow paths according to the fluid temperature. It is characterized in that the remote control unit connected to the temperature control unit and the actuator according to the set room temperature and hot water temperature.

Hereinafter, the present invention will become more apparent through preferred embodiments described below with reference to the accompanying drawings. Hereinafter, the present invention will be described in detail to enable those skilled in the art to easily reproduce the present invention.

1 is a view showing an automatic flow rate control valve according to a preferred embodiment of the present invention.

As shown in FIG. 1, the flow regulating valve according to the present invention has an inlet port 2 and an outlet port 3 formed on both sides of the rotatable control unit 11 coupled with the valve body 1. Each of the inflow passage and the outflow passage is connected to an inflow passage (not shown) and an outflow passage (not shown).

The external tooth-type spline formed on the outer peripheral surface of the adjusting part is slidably coupled to the internal tooth-type spline formed inside the rotary knob 7 so that the rotary knob is assembled to the controller to be rotatable in place and the assembly structure of the rotary knob is Since the designer can be arbitrarily selected and designed using a conventionally known rotating handle assembly, a detailed description thereof will be omitted.

The upper and lower flow passages 4a and 4b formed in the flow path portion 4 located inside the valve body while extending inwardly of the inlet or outlet, and the threaded portion formed on the outer circumferential surface of the upper end with the lower end opening inside the control part. Spring guide 12 is inserted into the screw assembly, and the lower end is opened and the upper end is inserted into the upper end through the open lower end of the spring guide and the upper disk (5) for opening and closing the upper passage (4a) of the flow path portion, The upper end is inserted into the inside through the lower end of the upper disk 5 and the valve spring guide 14 having a lower end and a compression spring 23 is installed therein, and the lower end is opened and the upper end is the valve spring. The lower disk 6 is inserted into the opening through the lower end of the spring guide and opens and closes the lower flow path 4b of the flow path part, and is fastened to the lower cap 15 that is coupled to the valve body. Open bottom A lower spring guide 16 inserted into the upper end, an upper spring retaining spring 21 inserted into an open lower end of the spring guide 12 and elastically installed between an upper surface of the upper disk, and the lower cap 15 of the lower spring guide 16. It is composed of a lower shape retaining spring 22 elastically installed between the upper surface and the lower surface of the lower disk (6).

In addition, the outlet is equipped with a temperature controller 40 for remotely controlling the flow rate by opening and closing the outlet valve 41 according to the set room temperature.

That is, the automatic flow rate control valve of the present invention loses or recovers the elastic force of the upper and lower shape memory springs according to the temperature change of the fluid to move the upper and lower disks so that the upper and lower flow paths are automatically opened and closed. It is a device that can prevent adjustment and freezing and adjust the flow rate by remotely controlling the outlet valve 41 according to the set room temperature.

More specifically, in the automatic flow control valve according to the present invention, the valve body and the control unit are coupled by the rotation guide member 17, and the upper end of the control unit and the spring guide is screwed. In addition, a plurality of holes 13 are drilled in the side surface of the spring guide so as to penetrate through the opening of the lower end.

In addition, the external tooth spline formed on the outer peripheral surface of the control unit is slidably coupled to the internal tooth spline formed on the inner side of the rotary handle is assembled to the control unit to be rotatable in place to rotate by the rotation knob The cutting part is made rotatable

In the opening of the spring guide, the upper shape-retaining spring 21 is internally placed on the upper surface of the upper disk 5 having the opening formed on the bottom surface of the spring guide. In addition, the upper disk opening is inserted with a protrusion projecting on the upper surface of the valve spring guide 14 having an opening formed on the lower surface, and the compression spring 23 is built in the opening of the valve spring guide 14.

A lower disk 6 having an opening formed at a lower end of the compression spring and a lower surface of the valve spring guide is positioned, and a lower shape retaining spring 22 is disposed at a lower surface of the lower disk, and the lower disk is located in an opening of the lower disk. The lower spring guide 16 for guiding the up and down movement of the valve body is inserted into the lower cap 15 coupled to the valve body.

Outlet valve 41 for controlling the flow rate is inserted into the outlet port is screwed with the rotating part 42, the driven gear meshing with the drive gear 44 coupled to the actuator 43 installed on the valve body 45 is configured on the upper end of the rotating part.

Figure 2 is an embodiment to automatically open and close the valve by a remote control method, the flow control actuator is fixed to one side of the adjustment portion of the valve body and then the drive gear of the flow control actuator to the external spline of the control portion It is structure to engage.

The operation of the present invention will be described as follows.

When the control unit coupled to the valve body is rotated to rotate only in place by the rotation guide member, the spring guide screwed with the control unit is to move up and down, accordingly, the upper and lower The disk is also raised and lowered together to block or open the upper and lower flow passages 4a and 4b. At this time, the pressure of the fluid acting on the upper and lower disks, as in the valve of FIG. 4 described above, the hydraulic pressure acting on the upper and lower disks cancel or relieve each other.

Referring to the embodiment of automatically adjusting the flow rate of the hot water flowing through the inlet is discharged through the outlet as follows.

As the control unit rotates in the opening direction to rotate until the initial desired flow rate, the spring guide rises and thus the upper disc and the valve spring guide rise. Meanwhile, as the valve spring guide rises, the compression spring inserted into the valve spring opening is tensioned to reduce the elastic force acting on the lower disk. When the upper flow passage 4a is opened due to the rise of the upper disk, the hot water flows to the outlet, and the pressure increases at the outlet. The outlet pressure of the valve body acts on the lower surface of the lower disc, thereby causing the lower disc to rise. 4b is also opened so that hot water flows out through the upper and lower flow passages to the outlet portion.

As described above, the heat of the hot water flowing through the upper and lower flow paths is transferred to the upper and lower mold suppressing springs. The upper mold suppressing spring has a property of detecting when the temperature of the hot water is above a predetermined temperature and restoring elastic force. When the temperature of the hot water exceeds the set temperature, an elastic force acts on the upper surface of the upper disk to lower the upper disk, thereby closing the upper channel. In addition, the valve spring guide is also lowered in conjunction with the upper disk, the compression force is further applied to the compression spring in the valve spring guide opening, the lower disk is also lowered to close the lower flow path to block the flow of hot water.

When the temperature of the outlet portion drops below the set temperature as time passes, the upper shape retaining spring loses its elastic force, and thus the upper disk, the valve spring guide, and the lower disk rise again to open the upper and lower flow paths. Will flow again.

Therefore, the upper shape retaining spring receives the heat conduction of the hot water flowing through the valve body and is heated above the set temperature to recover the elastic force to block the upper and lower flow paths, and when the temperature falls below the set temperature again, the upper and lower flow paths lose the elastic force. The flow of hot water is controlled while repeating the operation of returning to the open state.

On the other hand, in the case of the winter in which the inlet side is piped indoors and the outlet side is piped outdoors, if the fluid is continuously flowed by opening the upper and lower flow paths, the outlet side piped to the outside is not frozen due to the inflow fluid temperature. When the flow of the fluid is stopped by blocking the upper and lower flow paths, the fluid in the outlet portion is affected by the outdoor temperature, so when the outdoor temperature is below zero, the fluid freezes and freezes. Even if the flow path stops because the upper and lower flow paths are blocked, if the temperature of the fluid in the outlet decreases, the elastic force of the lower geometry suppressing spring in the outlet recovers when the temperature falls below the set temperature. As the lower disk rises, the fluid in the inlet is continuously It will flow to the outlet so that freezing does not occur.

In addition, when the indoor temperature is set differently, when the indoor temperature sensor (not shown) installed in the room senses the indoor temperature and sends it to the controller (not shown), the control unit according to the difference between the set room temperature and the measured room temperature In the drive the actuator 43 of the temperature control unit installed in the outlet. The rotary part 42 is rotated by the rotation of the driven gear meshing with the drive gear coupled to the actuator, and the outlet valve 41 screwed to the rotary part rotates to open and close the outlet flow path 46 and flow out to the outlet. The indoor temperature is controlled by controlling the flow rate of hot water.

Since the control by the difference between the sensed value and the set value is already known, a detailed description thereof will be omitted.

In addition, the embodiment described in Figure 2 can remotely control the flow control actuator 51 using the remote control to open and close the valve, as well as to control the rotation operation of the control unit to automatically adjust the initial set flow rate will be.

In addition, the flow control actuator 51 of the above embodiment may be configured as a servo motor or a step motor which can be operated by remote control.

As described above, the flow control valve according to the present invention can automatically adjust the flow rate according to the fluid temperature with a simple structure by allowing the elastic force of the upper and lower upper and lower access springs to be automatically adjusted according to the temperature of opening and closing the upper and lower flow paths. Even when the part is outdoors, there is an effect to prevent the freezing.

In addition, by controlling the flow rate through the temperature control unit installed in the outlet according to the set room temperature, there is an effect that can maintain the room temperature more accurately to the set temperature, and automatically by remotely controlling the flow control actuator installed on the valve body through the remote control You can also adjust the initial flow rate.

In addition, due to the detailed effects of the hydraulic pressure acting on the upper and lower disks, except for the water hammer action of the pipeline, the hydraulic pressure is less effective in opening and closing the flow path, so that it is easy to open and close a high pressure or a large flow path.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims (2)

An inlet 2 and an outlet 3 are formed on both sides of the rotatable control unit 11 coupled to the valve body 1, and the valve body 1 extends inside the inlet or outlet. In the valve composed of upper and lower flow passages 4a and 4b formed in the flow passage portion 4 located at A spring guide 12 having a lower end opening and a threaded portion formed on an outer circumferential surface of the upper end and inserted into the adjustment unit, and assembled with screws; An upper disc 5 which is opened at a lower end and an upper end is inserted into the upper end through the opened lower end of the spring guide, and opens and closes the upper flow path 4a of the flow path part; The upper end is inserted into the inside through the lower end of the upper disk and the valve spring guide 14, the lower end is opened and the compression spring 23 is installed therein, A lower disc 6 which is opened at a lower end and an upper end is inserted into the lower end through the opened lower end of the valve spring guide and opens and closes the lower flow path 4b of the flow path part; A lower spring guide 16 fastened to the lower cap 15 and inserted into an opened lower end of the lower disk; An upper shape retaining spring 21 inserted into an open lower end of the spring guide 12 and elastically installed on an upper surface of the upper disc; A lower shape retaining spring 22 elastically installed on an upper surface of the lower cap 15 and a lower surface of the lower disk; The outlet part 46 is coupled to the rotating part 42 and the rotating part in which an actuator 43 driven according to a set room temperature at the outlet and a driven gear 45 engaged with the driving gear 44 of the actuator are coupled. Automatic flow control valve, characterized in that the temperature control part 40 is provided with an outlet valve 41 for opening and closing the The method of claim 1, The flow control actuator 51 is installed in the valve body, and the drive gear 52 and the driven gear 53 coupled to the control unit of the flow control actuator are fitted to each other.

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