WO2011081295A2

WO2011081295A2 - Three-way valve and pipe body coupling structure

Info

Publication number: WO2011081295A2
Application number: PCT/KR2010/007967
Authority: WO
Inventors: 민태식
Original assignee: 주식회사 경동나비엔
Priority date: 2009-12-28
Filing date: 2010-11-11
Publication date: 2011-07-07
Also published as: KR20110075686A; WO2011081295A3

Abstract

The present invention relates to a three-way valve and to a pipe body coupling structure in which a three-way valve, to be connected to the inlets/outlets of a pipe body which are formed in three directions, to selectively convert a flow direction, is arranged so as to be easily disassembled/assembled from/to the inside/outside of the pipe body, thereby enabling the easy repair and maintenance of the three-way valve. To accomplish this, the three-way valve and pipe body coupling structure of the present invention comprises a three-way valve and a pipe body. The three-way valve comprises: a valve body having three openings; a valve element which moves in the upward and downward directions within the valve body so as to close one of the three openings; and power transmission means for moving the valve element. The pipe body has three inlets/outlets connected to the respective openings, and a three-way valve connection portion formed at one side thereof. The three-way valve is inserted into the three-way valve connection portion from the outside of the pipe body.

Description

Combined structure of three-way valve and piping body

The present invention relates to a coupling structure of the three-way valve and the pipe body, and more particularly, to be easily separated and assembled from the outside of the pipe body by connecting the three-way valve to the three-way inlet and outlet to selectively change the direction of the flow path It relates to a combined structure of the three-way valve and the pipe body to facilitate the maintenance work of the three-way valve.

In general, the three-way valve is formed so that the inlet and outlet of the valve body is formed in three directions to change the flow direction of the fluid through each inlet and outlet according to the movement of the valve body. Selective discharge through or through the two inlet and outlet fluid is made of a structure to discharge to the other inlet and outlet.

Conventional three-way valve is generally made of a structure that controls the flow of fluid by rotating the ball-shaped valve body, this is a large load on the motor due to friction between the valve body and the valve body, the valve body is easily damaged, etc. There is a problem of, three-way valve has been proposed that is made to open and close the valve body while reciprocating linearly.

1 and 2 is a cross-sectional view showing the configuration of a conventional three-way valve, Figure 1 is a cross-sectional view showing a state in which the valve body is located at the bottom dead center, Figure 2 is a cross-sectional view showing a state in which the valve body is located at the top dead center, Figure 3 This is a cross-sectional view showing the three-way valve coupled to the connecting pipe.

In the conventional three-way valve 100, a piston type valve body 140 is inserted into the valve body 110 in which three inlets and

outlets

101, 102, and 103 are formed, and the valve body 140 is disposed along the inside of the valve body 110. As a means for linear reciprocating motion is provided with a drive cam 160 and a driven cam 170, the motor 150 for rotating the drive cam 160 in connection with each other.

A first entrance and exit 101 is formed at one side of the lower end of the valve body 110, and a second entrance and exit 102 is formed at one side of the side wall of the valve body 110, and the first entrance and exit 101 and the second entrance and exit 101 are formed. A third entrance and exit 103 is formed in the sidewall portion between the entrance and exit 102 in a direction orthogonal to the second entrance and exit 102, and the drive cam 160 and the driven cam 170 are formed inside the side wall. An upper case 181 and a lower case 182 accommodated therein are provided.

The first valve seat 111 is provided on the inner circumferential surface of the first inlet and outlet 101 side of the valve body 110, and the second valve seat 112 is provided on the inner circumferential surface of the second inlet and outlet 102 side.

The valve body 140 is installed between the first valve seat 111 and the second valve seat 112 so as to be movable. When the valve body 140 is in close contact with the first valve seat 111, a third inlet / outlet ( The fluid communication is performed between the 103 and the second inlet and outlet 102, and when the valve body 140 is in close contact with the second valve seat 112, the fluid is communicated between the third inlet and outlet 103 and the first inlet and outlet 101. You lose.

A shaft 130 is coupled to a central portion of the valve body 140, and a guide member 120 is inserted into the central portion of the valve body 110 to insert the shaft 130 to linearly move the valve body 140.

The driven cam 170 is coupled to the shaft 130 and installed in the upper case 181 and the lower case 182 so as to reciprocate only in the axial direction. To this end, a plurality of guide holes 126 are formed in the driven cam 170, and a plurality of guide rods 125 inserted into the guide holes 126 are integrally formed in the guide member 120.

In addition, the driven cam 170 and the guide member as a means for elastically supporting the driven cam 170 toward the driving cam 160 so that the driven cam 170 and the driving cam 160 can be connected to each other. A spring 128 is installed between the 120.

The motor 150 is mounted on an upper portion of the upper case 181, and the motor shaft 151 is coupled to the driving cam 160 through the upper case 181 to drive the motor shaft 151 when the motor 150 is driven. ) And the drive cam 160 is rotated together.

The driven cam 170 and the drive cam 160 are installed to be in contact with each other, so that the driven cam 170 is linearly moved up and down by the rotation of the drive cam 160 and the restoring force of the spring 128, both sides Each of the

contact surfaces

163 and 173 has

protrusions

167 and 177 and recesses 165 and 175 corresponding to each other, so that each time the driving cam 160 is rotated by 90 °, the driven cam 170 moves from the top dead center to the bottom dead center or the bottom dead center. The stroke moves one point from top to top dead center.

In order to control the operation of the motor 150 to stop in a state in which the valve body 140 is in close contact with the first valve seat 111 or the second valve seat 112 on the inner side of the lower case 182, Switching means for detecting the rotational position of the drive cam 160 is cut off the power supplied to the motor 150 according to the position.

The switching means includes a plurality of sensing protrusions 161 formed on the outer circumferential surface of the driving cam 160 at predetermined intervals along a rotational direction, and a knob 192 pressed by the sensing protrusions 161. ) Is configured as a limit switch 190 to cut off the power. The sensing protrusions 161 are formed at different heights on the side of the protrusion 167 and the recess 165 of the driving cam 160, and each of the limit switches 190 at positions corresponding to the sensing protrusions 161, respectively. ) Is installed.

In order to install the conventional three-way valve 100 configured in this way on the fluid flow path as shown in FIG. 3, for example, the first and the first inlet and outlet sides 101 of the valve body 110 are connected to each other via a fixing bolt 101b. (101a) is coupled, the connection pipe 102a is coupled to the second inlet and outlet 102 through the fastening member 102b, the connection structure (not shown) is similarly coupled to the third inlet and outlet 103 side Will have

According to such a coupling structure, in order to replace the three-way valve 100 or to perform maintenance work, the first inlet and outlet 101, the second inlet and outlet 102, and the third inlet and outlet 103 of the valve body 110 are provided. Since the combined connection pipes must be separated, the work is cumbersome and takes a lot of effort and time, and there is a problem that leakage may occur at the connection part due to a mistake in the connection of the connection part.

The present invention has been made to solve the above problems, by providing a combined structure of the three-way valve and the pipe body to simplify the maintenance of the three-way valve by simplifying the structure that the three-way valve is coupled to the pipe. Has its purpose.

Coupling structure of the three-way valve and the pipe body according to an embodiment of the present invention for achieving the above object, any one of the three openings and the valve body having three openings at the same time in the inside of the valve body Three-way valve including a valve body for closing the opening of the opening and the power transmission means for moving the valve body; and three inlet and outlet respectively connected to the three openings are formed, one side pipe body formed with a three-way valve connection; It includes, the three-way valve is characterized in that inserted into the three-way valve connection portion from the outside of the pipe body.

Here, the valve body has a first opening portion at one side of a lower end portion, a second opening portion and a third opening portion are formed to be spaced apart from above and below at a side wall portion, and a first valve seat is formed at a side portion of the first opening portion. The inner side guides the shaft moved by the drive of the motor and the lower end is provided with a guide member formed with a second valve seat, the valve body is coupled to the lower end of the shaft between the first valve seat and the second valve seat It can be configured to move up and down in.

In addition, the valve body and the upper end of the three-way valve connecting portion may be formed in the flange portion in contact with each other is formed, the coupling between the flange portion by a fastening member.

In addition, the outer surface of the guide member and the inner surface of the valve body may be configured to be fitted in the airtight state.

In addition, the outer surface of the valve body and the inner surface of the pipe body may be configured to be fitted in the airtight state.

Coupling structure of the three-way valve and the pipe body according to another embodiment of the present invention, three inlet and outlet is formed, the first valve seat is formed on the side of the inlet and outlet formed on the lower end, the pipe body formed with a three-way valve connection portion; And a composite lower case in which a second valve seat is formed at a lower portion thereof, and a vertical movement is guided by the composite lower case, and moved up and down between the first valve seat and the second valve seat to close any one of the three inlets and outlets. And a three-way valve including a valve body and a power transmission means for moving the valve body, wherein the three-way valve is inserted into the three-way valve connecting portion from the outside of the pipe body.

In addition, the outer surface of the composite lower case and the inner surface of the pipe body is fitted in a state of maintaining the airtight, the flange portion protruding to the side of the composite lower case and the flange portion protruding to the side of the pipe body is matched with each other. It can be configured to be joined by the fastening member in contact.

According to the coupling structure of the three-way valve and the pipe body according to the present invention, the three-way valve is inserted into the pipe body from the outside of the pipe body to be combined to facilitate coupling and separation of the three-way valve to the pipe body. There is an effect that can easily perform the maintenance work of the three-way valve.

In addition, according to the present invention it is possible to reduce the possibility of water leakage caused by the connection portion by reducing the connection portion to which the three-way valve and the pipe is coupled.

1 and 2 is a cross-sectional view showing the configuration of a conventional three-way valve, Figure 1 is a cross-sectional view showing a state in which the valve body is located at the bottom dead center, Figure 2 is a cross-sectional view showing a state in which the valve body is located at the top dead center,

3 is a cross-sectional view showing a conventional three-way valve coupled to the connection pipe,

4 is a cross-sectional view showing the configuration of a three-way valve according to an embodiment of the present invention;

5 and 6 are cross-sectional views showing a state in which the three-way valve shown in Figure 4 is coupled to the pipe body, Figure 5 is a cross-sectional view showing the valve body is located at the bottom dead center, Figure 6 is a valve body is located at the top dead center Profile showing appearance,

7 is a cross-sectional view showing the configuration of a three-way valve according to another embodiment of the present invention;

8 and 9 are cross-sectional views showing a state in which the three-way valve shown in Figure 7 is coupled to the pipe body, Figure 8 is a cross-sectional view showing the valve body is located at the bottom dead center, Figure 9 is a valve body is located at the top dead center It is a cross section showing the appearance.

100,200,400: Three-way valve 101,301,501: First inlet and outlet

102,302,502: 2nd entrance 103,303,503: 3rd entrance

110,210: valve body 111,214,514: first valve seat

112,224,424: second valve seat 120,220: guide member

125: guide rod 126: guide

128: spring 130: shaft

140: valve body 150: motor

160: drive cam 161: detection projection

163,173: contact surface 165,175: depression

167,177: protrusion 170: driven cam

181: upper case 182: lower case

190: limit switch 211: first opening

212: second opening 213: third opening

215,315,415,515: Flange 300,500: Piping body

310,510: three-way valve connection 420: composite lower case

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same constituent elements as the prior art, and detailed descriptions of the same elements as those described in the prior art will be omitted.

Figure 4 is a cross-sectional view showing the configuration of a three-way valve according to an embodiment of the present invention.

The three-way valve 200 according to the present invention is a three-way valve by taking a coupling structure that is inserted into the inner side of the pipe body 300 from the outside of the pipe body 300 to form a flow path of the fluid in a device that requires a fluid flow direction change Characterized in that the 200 is configured to be easily separated and coupled to the pipe body (300).

Referring to FIG. 4, in the three-way valve 200 according to the exemplary embodiment of the present invention, a first opening 211 is formed at one side of a lower end, and a second opening 212 and a third opening 213 are formed at the side wall. The valve body 210 is spaced up and down, and the guide member 220 is installed inside the valve body 210 to guide the shaft 130 is moved by the drive of the motor 150.

On the inner circumferential surface of the lower end of the valve body 210, a first valve seat 214 is formed at the side of the first opening 211, and at the lower end of the guide member 220 toward the inner surface of the valve body 210. An extended second valve seat 224 is formed.

The valve body 140 coupled to the lower end of the shaft 130 is installed to be movable between the first valve seat 214 and the second valve seat 224 so that the valve body 140 is the first valve seat. 214 is in close contact with the second opening 212 and the third opening 213 is in communication, and when the valve body 140 is in close contact with the second valve seat 224, the first opening 211 and the second Communication is made between the openings 212.

The flange 215 is integrally protruded outward from the upper end of the valve body 210 to be in contact with the flange 315 formed at the upper end of the three-way valve connection part 310 of the pipe body 300 to be described later. Is fastened.

The guide member 220 is formed separately from the valve body 210, and the power transmission means coupled to the guide member 220 and the shaft 130 and the upper and lower portions of the shaft 130 inserted therein; The valve body 140 may be configured to be separated from the valve body 210 to provide a convenience for maintenance work on the internal components of the three-way valve 200.

O-rings (221, 222) are coupled to the upper and lower portions between the outer surface of the guide member 220 and the inner surface of the valve body 210, when the guide member 220 is inserted into the inside of the valve body 210 This is in close contact with the fitting.

In addition, the three-way valve 200 of the present invention is the same component as the three-way valve 100 according to the prior art, the motor 150, the driving source and the rotation of the motor 150 so that the valve body 140 linear reciprocating motion As a power transmission means for transmitting power includes a drive cam 160 and a driven cam 170, the motor to sense the rotational position of the drive cam 160 to control the operation of the motor 150 according to the position The limit switch 190 is provided as a switching means for interrupting the power supplied to the 150, and its configuration and operation may be applied in the same manner as described in the related art.

Hereinafter, a structure in which the three-way valve 200 having the above configuration is coupled to the pipe body 300 will be described.

5 and 6 are cross-sectional views showing a state in which the three-way valve shown in Figure 4 is coupled to the pipe body, Figure 5 is a cross-sectional view showing the valve body is located at the bottom dead center, Figure 6 is a valve body is located at the top dead center It is a cross section showing the appearance.

In the present invention, the three-way valve 200 is configured to include a pipe body 300 having a structure that can be inserted and coupled.

The pipe body 300 is an integral injection molding forming a flow path, and is located at positions corresponding to the first opening 211, the second opening 212, and the third opening 213 of the three-way valve 200, respectively. The first entrance and exit 301, the second entrance and exit 302, and the third entrance and exit 303 are formed.

And the three-way valve connection portion 310 is formed on the opposite side of the first inlet and outlet 301 is provided with a space for the three-way valve 200 is inserted. The upper end of the three-way valve connection 310 is a flange portion 315 protruding to contact the flange portion 215 formed in the valve body 210 of the three-way valve 200 is coupled by a fastening member such as a clip.

Between the outer surface of the valve body 210 and the inner surface of the pipe body 300, a plurality of O-rings (214, 215, 216) are coupled at intervals up and down, the three-way valve 200 is piped through the three-way valve connection 310 When inserted into the body 300, the airtight state is kept in close contact with the fitting.

As described above, according to the coupling structure of the three-way valve 200 and the pipe body 300 according to the present invention, the three-way valve 100 is conventionally compared to the structure of coupling through the fastening member at three connecting portions to install the pipe. When the three-way valve 200 is inserted into the inside of the three-way valve connection part 310 from the outside of the pipe body 300, the fastening member only in the

flanges

215 and 315 formed in the valve body 210 and the three-way valve connection part 310. Since it can be combined through the number of connections can be reduced to one place.

Accordingly, the structure of coupling and separating the three-way valve 200 to and from the pipe body 300 is simplified to reduce the effort and time required for the maintenance work of the three-way valve 200 and to reduce the leakage factor at the connection part. do.

7 is a cross-sectional view showing the configuration of a three-way valve according to another embodiment of the present invention, Figures 8 and 9 is a cross-sectional view showing a state in which the three-way valve shown in Figure 7 is coupled to the pipe body, Figure 8 is a bottom of the valve body 9 is a cross-sectional view showing a state in which the valve body is located at the top dead center.

Three-way valve 400 according to another embodiment of the present invention is compared with the structure of the three-way valve 200 according to the first embodiment described above, the lower case 182 and the guide member 220 constituting the first embodiment and Part of the valve body 210 is replaced by a composite lower case 420 consisting of a single body, the configuration is different in that the configuration of the valve body 210 in the first embodiment is omitted.

The complex lower case 420 has a flange portion 415 protruding integrally formed on the side portion, the second valve seat 424 is formed on the lower side.

The pipe body 500 into which the three-way valve 400 is inserted is formed with a first inlet and outlet 501, a second inlet and outlet 502, and a third inlet and outlet 503, and a flange portion 515 is integrally formed at the side. Protruding.

The first valve seat 514 is formed at the side of the first inlet / outlet 501 of the pipe body 500, and the three-way valve connecting part 510 is formed at the opposite side of the first inlet / outlet 501.

When coupling between the three-way valve 400 and the pipe body 500, the three-way valve 400 is inserted into the three-way valve connecting portion 510 from the outside of the pipe body 500, the outside of the composite lower case 420 O-

rings

421 and 422 are vertically coupled between the side surfaces and the inner surfaces of the pipe bodies 500 to maintain airtightness.

When the three-way valve 400 is completely inserted into the pipe body 500, the flange part 415 formed on the complex lower case 420 and the flange part 515 formed on the pipe body 500 contact and fasten to each other. Are joined by a member.

The present invention can be applied to any device that operates by switching the flow of fluid, including a combustion device such as a boiler or a water heater, and the present invention to all devices for selectively switching the flow path in a plurality of directions, such as three-way valves and four-way valves. It will be apparent to those skilled in the art that the present invention may be variously modified and modified.

Claims

A three-way valve including a valve body having three openings, a valve body closing at least one of the three openings at the same time and a power transmission means for moving the valve body at the same time in the valve body; and

And three inlet and outlet openings respectively connected to the three openings, and a pipe body having a three-way valve connection portion formed at one side thereof.

The three-way valve is a coupling structure of the three-way valve and the pipe body, characterized in that inserted into the three-way valve connection portion from the outside of the pipe body.
The method of claim 1,

The valve body has a first opening portion at one side of a lower end portion, a second opening portion and a third opening portion are formed to be spaced apart from each other vertically on the side wall portion, and a first valve seat is formed at the side portion of the first opening portion. The guide shaft is moved by the drive of the motor and the lower end is provided with a guide member formed with a second valve seat, the valve body is coupled to the lower end of the shaft between the first valve seat and the second valve seat Coupling structure of the three-way valve and the pipe body, characterized in that it is moved up and down.
The method of claim 1,

The valve body and the upper end of the three-way valve connecting portion is a flange portion in contact with each other is formed projecting, the coupling structure between the three-way valve and the pipe body, characterized in that coupled by the fastening member.
The method of claim 1,

Coupling structure of the three-way valve and the pipe body, characterized in that the outer surface of the guide member and the inner surface of the valve body is fitted in the airtight state.
The method according to any one of claims 1 to 4,

Coupling structure of the three-way valve and the pipe body, characterized in that the outer surface of the valve body and the inner surface of the pipe body is fitted in the airtight state.
Three inlet and outlet is formed, the first valve seat is formed on the side of the inlet and outlet formed on the lower portion, one side pipe body formed with a three-way valve connection; And

Up and down movement is guided by the composite lower case, and the composite lower case formed with a second valve seat in the lower portion is moved up and down between the first valve seat and the second valve seat to close any one of the three inlet and outlet And a three-way valve including a valve body and a power transmission means for moving the valve body.

The three-way valve is a coupling structure of the three-way valve and the pipe body, characterized in that inserted into the three-way valve connection portion from the outside of the pipe body.
The method of claim 6,

The outer surface of the composite lower case and the inner surface of the pipe body are fitted in the airtight state, the flange portion protruding to the side of the composite lower case and the flange portion protruding to the side of the pipe body abut each other Coupling structure of the three-way valve and the pipe body, characterized in that coupled by the fastening member.