KR20210008224A - Three-way Valve - Google Patents

Abstract

The present invention relates to a three-way valve. More particularly, the present invention relates to a three-way valve that can selectively open and close a flow path through which a fluid flows via a valve member including a plunger that can be driven up and down, has a strong structure, and can be easily disassembled and maintained. According to the present invention, the three-way valve comprises: a valve body including a first flow path, a second flow path, a third flow path, and a connection port; and a valve member inserted into the connection port to selectively open and close the first flow path and the second flow path.

Description

Three-way Valve

The present invention relates to a three-way valve, and more particularly, a three-way valve capable of selectively opening and closing a flow path through which a fluid flows through a valve part including a vertically driven plunger, and having a solid structure and easy disassembly and maintenance It is about.

In general, in a three-way valve, a three-way fluid passage consisting of one fluid supply passage and two fluid discharge passages is formed in the valve body, and the fluid flowing into the valve body through the fluid supply passage is transferred to the valve body by the movement of the valve poppet. It is configured to be selectively discharged while the fluid discharge passage is switched.

At this time, when the three-way valve is applied to the boiler system, the fluid supply flow path can be connected to the main heat exchanger of the boiler, the first fluid discharge flow path is connected to the heating supply pipe, and the second fluid discharge port is connected to the hot water heat exchanger. Can be.

However, the conventional three-way valve has a structure in which the packing provided at the end of the shaft cannot be disassembled from the valve body as in Patent Document 1 below, or the plunger of the shaft cannot be disassembled from the valve body as in Patent Document 3 below. As it is configured, maintenance such as maintenance or replacement is impossible during use, and there is a problem such as shortening the lifespan.

Unexamined Patent Publication No. 10-2009-0055322 (3-way valve for boiler) Publication Patent Publication No. 10-2013-0058595 (electric three-way valve) Registered Patent Publication No. 10-1303125 (Three-way valve)

It is an object of the present invention to provide a three-way valve capable of selectively opening and closing a flow path through which a fluid flows through a valve unit including a vertically driven plunger, a structure of which is solid, and capable of being easily disassembled and maintained.

In order to solve the above problems, the present invention provides a three-way valve, comprising: a valve body including a first passage, a second passage, a third passage, and a connection port; And a valve member inserted into the connection port to selectively open and close the first flow passage and the second flow passage. Including, the valve member, the plunger capable of driving up and down the valve member to selectively open and close the first flow passage and the second passage; It provides a three-way valve comprising a.

In the present invention, the plunger includes: a valve pad for opening and closing the flow path by contacting the first valve seat and the second valve seat provided in the first flow path and the second flow path, respectively; And a valve shaft extending long in a driving direction of the plunger to drive the valve pad up and down. Including, the valve pad may be separated by being fixed through the valve shaft.

In the present invention, the plunger may further include a valve cylinder composed of a toothed flow path piece member positioned at an upper end of the valve pad and opening and closing the flow path in the first valve seat according to vertical driving of the plunger.

In the present invention, the plunger may include a flow piece positioned at the lower end of the valve pad to open and close the second valve seat according to vertical driving of the plunger.

In the present invention, the flow piece may be provided with a flow path groove for adjusting the amount of fluid flowing through the second valve seat according to the vertical drive of the plunger.

In the present invention, the valve member, a spring member for applying a restoring force to the valve shaft; The spring member may further include a force applied to the valve shaft in a direction outside the connection port, and thus an upper end of the valve shaft may protrude outside the valve member.

In the present invention, the valve member may include a cylinder made of a toothed flow path piece member that is fixed in contact with the first valve seat to form a flow path connected to the first flow path.

In the present invention, the cylinder may be provided with a third valve seat that is in contact with the first valve seat and in contact with the valve pad to control fluid flow in the first flow path.

According to an embodiment of the present invention, it is possible to exert an effect of controlling the flow of fluid by selectively opening and closing the first flow passage and the second flow passage according to the linear vertical motion of the valve shaft.

According to an embodiment of the present invention, the valve member is rotatably coupled to a connection port provided in the valve body, and each component of the valve member is coupled by a stop ring or the like, so that the effect of easy assembly and disassembly can be exhibited.

According to an embodiment of the present invention, the assembly and disassembly of the valve member is easy, so that the three-way valve can be easily repaired and replaced.

According to an embodiment of the present invention, it is possible to exhibit an effect of improving the durability of a plunger that is driven up and down by including a valve cylinder composed of a toothed passage piece on the plunger.

According to an embodiment of the present invention, the valve cylinder of the plunger is inserted into the first valve seat and moves up and down to prevent the plunger from being separated, thereby improving operational stability.

According to an embodiment of the present invention, it is possible to exhibit an effect of minimizing a water hammer phenomenon that may occur due to opening and closing of a flow path according to driving of a plunger by the shape of the flow piece and the valve cylinder.

1 is a perspective view schematically showing a three-way valve according to an embodiment of the present invention.
2 is a perspective view schematically showing a valve member according to an embodiment of the present invention.
3 is an exploded perspective view schematically showing a three-way valve according to an embodiment of the present invention.
4 is an exploded perspective view schematically showing a plunger according to an embodiment of the present invention.
5 is a cross-sectional view schematically showing an operating state of a three-way valve according to an embodiment of the present invention.
6 is a cross-sectional view schematically showing an operating state of a three-way valve according to an embodiment of the present invention.
7 is a cross-sectional view schematically showing an operating state of a three-way valve according to an embodiment of the present invention.
8 is a use state diagram schematically showing the operation of the valve piston according to an embodiment of the present invention.
9 is a perspective view schematically showing a three-way valve according to an embodiment of the present invention.
10 is an exploded perspective view schematically showing a plunger and a cylinder according to an embodiment of the present invention.
11 is a cross-sectional view schematically showing an operating state of a three-way valve according to an embodiment of the present invention.
12 is a cross-sectional view schematically showing an operating state of a three-way valve according to an embodiment of the present invention.

In the following, various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, a number of specific details are disclosed to aid in an overall understanding of one or more aspects. However, it will also be appreciated by those of ordinary skill in the art that this aspect(s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used, and the descriptions described are intended to include all such aspects and their equivalents.

In addition, the terms "comprising" and/or "comprising" mean that the corresponding feature and/or element is present, but excludes the presence or addition of one or more other features, elements, and/or groups thereof. It should be understood as not.

In addition, terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein including technical or scientific terms are commonly understood by those of ordinary skill in the art to which the present invention belongs. It has the same meaning as. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning Is not interpreted as.

1 is a perspective view schematically showing a three-way valve according to an embodiment of the present invention.

Referring to Figure 1, a three-way valve according to an embodiment of the present invention is a valve body 100 including a first passage 110, a second passage 120, a third passage 130 and a connection port 140. ; And a valve member 200 inserted into the connection port 140 to selectively open and close the first flow path 110 and the second flow path 120. It may include.

As shown in Figure 1, the valve body 100 has three flow paths 110, 120, 130 and one connection port 140 arranged in a cross shape, and a valve member in the connection port 140 200 can be inserted. At this time, the valve member 200 selectively opens and closes the first passage 110 and the second passage 120 to select a passage connected to the third passage 130 and flow of fluid between the connected passages. You will be able to control it.

In one embodiment of the present invention, the valve member 200 is a plunger capable of selectively opening and closing the first flow path 110 and the second flow path 120 by being able to drive up and down the valve member 200 (210); It may include.

The plunger 210 can be driven up and down in the valve member 200 that is inserted and fixed in the connection port 140, so that the first flow path 110 and the second flow path 120 are provided in the valve body 100. ) And the third flow path 130 may form or close a flow path by moving in the connection flow path connecting the third flow path 130, thereby selectively opening and closing the first flow path 110 and the second flow path 120.

The valve member 200 according to an embodiment of the present invention may be rotatably coupled through a thread provided in the connection port 140, and the plunger 210 is driven up and down in the valve member 200 It can move up and down within the valve body 100.

As described above, the valve member 200 can be easily separated and coupled by rotatingly coupled to the connection port 140, and accordingly, maintenance of the three-way valve can be easily performed.

2 is a perspective view schematically showing a valve member according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view schematically showing a three-way valve according to an embodiment of the present invention.

Referring to Figure 2, the valve member 200 according to an embodiment of the present invention includes a valve body 220 fixed to the connection port 140; And a plunger 210 capable of selectively opening and closing the first flow path 110 and the second flow path 120 by being driven up and down of the valve member 200. It may include.

In this case, the valve body 220 may have a thread 221 to couple with a thread provided in the connection port 140.

In one embodiment of the present invention, the plunger 210 is in contact with the first valve seat 111 and the second valve seat 121 respectively provided in the first flow path 110 and the second flow path 120 A valve pad 211 for opening and closing the flow path; A valve shaft 212 extending long in the driving direction of the plunger 210 to drive the valve pad 211 up and down; A valve cylinder 213 comprising a toothed flow path piece member positioned at an upper end of the valve pad 211 and opening and closing a flow path in the first valve seat 111 according to vertical driving of the plunger 210; And a flow rate piece 214 positioned at a lower end of the valve pad 211 to open and close the second valve seat 121 according to vertical driving of the plunger 210. It may include.

Referring to FIG. 3, the valve cylinder 213, the valve pad 211, and the flow piece 214 may be fixed through the valve shaft 212 and separated. At this time, the valve cylinder 213, the valve pad 211, and the flow piece 214 may be fixed to the valve shaft 212 by a stop ring 215.

In addition to the valve cylinder 213, the valve pad 211, and the flow piece 214, components fixed to the valve shaft 212 are also fixed by a stop ring 215, so that the valve shaft 212 is easily Can be separated from

In this way, the valve member 200 inserted into the connection port 140 can be easily separated and coupled, so that maintenance such as maintenance and replacement of parts can be easily performed.

In an embodiment of the present invention, the valve member 200 includes: a spring member 230 for applying a restoring force to the valve shaft 212; It may further include. In an embodiment of the present invention, one end of the spring member 230 is in contact with the stopping ring 215 fixed to the valve shaft 212, and the other end of the spring member 230 is in contact with the valve body 220, so that the valve shaft 212 ) May be able to receive a restoring force for the valve body 220.

In an embodiment of the present invention, the spring member 230 applies a force to the valve shaft 212 in an outward direction of the connection port 140, and accordingly, the upper end of the valve shaft 212 is the valve member 200 ) It can protrude outward. 2 shows the upper end of the valve shaft 212 protruding as described above.

The plunger 210 may be lowered by applying a pressing force to the upper end of the valve shaft 212 protruding as described above, and by removing the pressing force on the upper end of the valve shaft 212, the spring member 230 The plunger 210 may be raised.

The three-way valve can selectively open and close the connected flow path by the lowering and rising of the plunger 212.

4 is an exploded perspective view schematically showing a plunger according to an embodiment of the present invention.

FIG. 4 shows in detail the valve pad 211, the valve cylinder 213, the flow piece 214, and the stopping ring 215 among the components of the plunger 120 shown in FIG. 3.

The valve cylinder 213 according to an embodiment of the present invention is composed of a toothed flow path piece. As shown in FIG. 4, the valve cylinder 213 may include a plurality of passage partition walls 213.1 and a partition wall joint 213.2 connecting the passage partition 213.1 and the adjacent passage partition 213.1. have. A flow path through which a fluid can flow may be formed through a space between the flow path partition 213.1 and the adjacent flow path partition 213.1. At this time, in an embodiment of the present invention, the partition wall joint 213.2 may take a form in which the width of the partition wall joint 213.2 becomes narrower as it goes downward. In this case, the partition wall joint 213.2 may take a preset curved shape and control the flow rate by adjusting the area of the flow path formed through the valve cylinder 213.

As shown in FIG. 4, the flow piece 214 according to an embodiment of the present invention controls the amount of fluid flowing through the second valve seat 121 according to the vertical drive of the plunger 210. A flow path groove 214.1 may be provided to enable it. In particular, the flow path groove 214.1 may have a shape that gradually widens as it goes downward. Accordingly, as the flow rate piece 214 rises, the flow rate flowing through the second valve seat 121 may increase.

More preferably, the flow piece 214 may take a curved shape in which the width of the flow piece 214 gradually increases as it goes downward, and the rate of increase of the width also increases. By taking such a curved shape, it is possible to precisely control the flow rate flowing through the second valve seat 121, and the water hammer phenomenon that may occur when the flow path is opened or closed according to the vertical drive of the plunger 210 Can be prevented.

5 to 7 are cross-sectional views schematically showing an operating state of a three-way valve according to an embodiment of the present invention.

FIG. 5 shows a second valve seat provided on the upper end of the second passage 120 by the plunger 210 descending from the three-way valve according to an embodiment of the present invention, and the valve pad 211 of the plunger 210 at a low point. It is in contact with 121, and accordingly, the second flow path 120 is blocked. At this time, the valve cylinder 213 is located between the first valve seat 111 located between the first flow path 110 and the third flow path 130, but the valve cylinder 213 is a toothed flow path piece member. A fluid may flow into the third flow path 130 through the configured and provided tooth flow path.

6, in the three-way valve according to an embodiment of the present invention, the plunger 210 is located in the middle of the low point and the high point, so that the valve pad 211 of the plunger 210 is provided on the top of the second flow path 120. It is spaced apart from the second valve seat 121, and accordingly, the second flow path 120 is opened. At this time, the valve cylinder 213 is positioned between the first valve seats 111 as in FIG. 5, but the fluid may flow through the toothed flow path. That is, in the use state of FIG. 6, both the first flow path 110 and the second flow path 120 are open so that fluid may flow from both flow paths to the third flow path 130 at the same time.

7 is a three-way valve according to an embodiment of the present invention, when the plunger 210 is at a high point, the valve pad 211 of the plunger 210 is positioned between the first flow path 110 and the third flow path. 1 It is shown that the valve seat 111 is in contact, and the first flow path 110 is blocked accordingly. At this time, a flow rate piece 214 is located between the second valve seat 121 provided at the top of the second flow channel, but the flow rate piece has a flow channel groove, so that the flow rate piece 214 passes into the third flow channel 130 through the flow channel groove. The fluid can flow.

5 to 7, in the case of the plunger 210 according to an embodiment of the present invention, the valve cylinder 213 is inserted into the first valve seat 111 and is driven up and down, so that the plunger ( 210) does not deviate from side to side and can be driven up and down. In addition, when the valve cylinder 213 is configured as a toothed flow path piece so that the plunger 210 descends as shown in FIG. 5, the first flow path through a flow path provided between the flow path partition walls 213.1 of the valve cylinder 213 It is possible to control the flow of the fluid between (110) and the third flow path (130). At this time, by adjusting the shape of the partition wall joint 213.2 connecting the flow path partition 213.1, the first flow path 110 and the third flow path 130 are moved according to the vertical drive of the valve cylinder 213. The area of the flow path formed in the can be adjusted, and the flow rate can be controlled accordingly.

8 is a use state diagram schematically showing the operation of the valve piston according to an embodiment of the present invention.

FIG. 8 shows the shape of a flow path formed when the valve piston 213 is driven vertically in the first valve seat 111 according to an embodiment of the present invention.

In the embodiment shown in FIG. 8, the partition wall joint 213.2 of the valve piston 213 has a shape of a quadratic curve. Through this, the flow path formed by the flow path partition wall 213.1 and the partition wall joint 213.2 also has the shape of a quadratic curve.

FIG. 8A shows a state in which the valve piston 213 descends from a high point and a flow path is formed in the first valve seat 111. The valve piston 213 forms a flow path connecting the first flow path 110 and the third flow path 130 by the partition wall joint 213.2 and the first valve seat 111. The flow path formed as described above is darkly displayed in FIG. 8. In this case, if the height of the flow path formed by the partition wall joint 213.2 is h1, the cross-sectional area of the flow path may be expressed as follows.

In this case, n is the number of flow paths formed by the flow path partition wall 213.1 and the partition wall joint 213.2, and a is a constant.

In addition, FIG. 8B shows a state in which the valve piston 213 is further lowered to form a flow path in the first valve seat 111. In this case, if the height of the flow path formed by the partition wall joint 213.2 is h2, the cross-sectional area of the flow path may be expressed as follows.

In addition, (c) of FIG. 8 shows a state in which the valve piston 213 is further lowered to form a flow path in the first valve seat 111. In this case, if the height of the flow path formed by the partition wall joint 213.2 is h3, the cross-sectional area of the flow path may be expressed as follows.

In this way, the area of the flow path between the first flow passage and the third flow passage formed by driving the valve piston 213 up and down according to the vertical driving of the plunger 210 is formed by the partition wall joint 213.2 It is proportional to the 3/2 power of the height of the flow path. That is, it is possible to control the area of the flow path between the first flow passage and the third flow passage according to the vertical driving amount of the plunger 210.

As described above, according to the shape of the flow path partition wall 213.1 and the partition wall joint 213.2 of the valve piston 213, the area of the flow path between the first flow path and the third flow path according to the vertical movement of the plunger 210 You will be able to establish relationships.

As described above, by controlling the change in the flow path area according to the driving of the plunger 210, a water hammer phenomenon that may occur when the flow path of the first valve seat is opened or closed according to the vertical driving of the plunger 210 can be prevented.

9 to 12 illustrate a three-way valve according to an embodiment different from that shown in FIGS. 1 to 8.

9 is a perspective view schematically showing a three-way valve according to an embodiment of the present invention.

Referring to FIG. 9, a three-way valve according to an embodiment of the present invention includes a valve body 100 including a first flow passage 110, a second flow passage 120, a third flow passage 130, and a connection port 140. ); And a valve member 200 inserted into the connection port 140 to selectively open and close the first flow path 110 and the second flow path 120. It may include.

As shown in Figure 1, the valve body 100 has three flow paths 110, 120, 130 and one connection port 140 arranged in a cross shape, and a valve member in the connection port 140 200 can be inserted. At this time, the valve member 200 selectively opens and closes the first passage 110 and the second passage 120 to select a passage connected to the third passage 130 and flow of fluid between the connected passages. You will be able to control it.

In one embodiment of the present invention, the valve member 200 is a plunger capable of selectively opening and closing the first flow path 110 and the second flow path 120 by being able to drive up and down the valve member 200 (210); It may include.

The plunger 210 can be driven up and down in the valve member 200 that is inserted and fixed in the connection port 140, so that the first flow path 110 and the second flow path 120 are provided in the valve body 100. ) And the third flow path 130 may form or close a flow path by moving in the connection flow path connecting the third flow path 130, thereby selectively opening and closing the first flow path 110 and the second flow path 120.

In the embodiment shown in FIG. 9, the valve member 200 is a cylinder 240 made of a toothed flow path piece member that is fixed in contact with the first valve seat 111 to form a flow path connected to the first flow path 110. ) Can be included.

As shown in FIG. 9, the cylinder 240 is fixed to the valve body 200 of the valve member 200, and the valve body 200 is inserted into the connection port 140 to be fixed. The lower end of the 240 may be fixed in contact with the first valve seat 111.

10 is an exploded perspective view schematically showing a plunger and a cylinder according to an embodiment of the present invention.

In FIG. 10, the components of the cylinder 240 and the plunger 120 are shown in detail.

Referring to FIG. 10, the cylinder 240 according to an embodiment of the present invention is in contact with the first valve seat 111 and in contact with the valve pad 214 to provide a fluid in the first flow path 110. A third valve seat 112 for controlling the flow may be provided.

In one embodiment of the present invention, the lower end of the cylinder 240 may be in contact with the first valve seat 111 to close the first flow path 110. However, a flow path may be formed between the first flow path 110 and the third flow path 130 by providing the third valve seat 241 at the lower end of the cylinder 240. At this time, the valve pad 211 contacts the third valve seat 241 according to the vertical drive of the plunger 210 and closes the third valve seat 241 so that the first flow path 110 is It controls fluid flow.

In one embodiment of the present invention, the cylinder 240 includes an O-ring 245 in contact with the first valve seat 111 to allow fluid flow between the first valve seat 111 and the cylinder 240 Closed to allow fluid to flow only with the third valve seat 214.

As shown in FIG. 10, the flow piece 214 according to an embodiment of the present invention controls the amount of fluid flowing through the second valve seat 121 according to the vertical drive of the plunger 210. A flow path groove 214.1 may be provided to enable it. In particular, the flow path groove 214.1 may have a shape that gradually widens as it goes downward. Accordingly, as the flow rate piece 214 rises, the flow rate flowing through the second valve seat 121 may increase.

More preferably, the flow piece 214 may take a curved shape in which the width of the flow piece 214 gradually increases as it goes downward, and the rate of increase of the width also increases. By taking such a curved shape, it is possible to precisely control the flow rate flowing through the second valve seat 121, and the water hammer phenomenon that may occur when the flow path is opened or closed according to the vertical drive of the plunger 210 Can be prevented.

11 and 12 are cross-sectional views schematically showing an operating state of a three-way valve according to an embodiment of the present invention.

11 and 12 illustrate a state in which the first passage 110 and the second passage 120 are selectively opened and closed according to the vertical movement of the plunger 210 as illustrated in FIGS. 9 to 12.

FIG. 11 shows a second valve seat provided on the upper end of the second flow path 120 by the plunger 210 descending and the valve pad 211 of the plunger 210 at a low point in the three-way valve according to an embodiment of the present invention. It is in contact with 121, and accordingly, the second flow path 120 is blocked. At this time, a cylinder 240 is located in the first valve seat 111 located between the first flow passage 110 and the third flow passage 130, and through the third valve seat 241 of the cylinder 240 A fluid may flow through the third flow path 130.

12, the valve pad 211 of the plunger 210 is in contact with the third valve seat 241 of the cylinder 240 at the high point of the plunger 210 in the three-way valve according to an embodiment of the present invention. As a result, the first flow path 110 is blocked. At this time, a flow rate piece 214 is located between the second valve seat 121 provided at the top of the second flow channel, but the flow rate piece has a flow channel groove, so that the flow rate piece 214 passes into the third flow channel 130 through the flow channel groove. The fluid can flow.

Although not shown through the drawings, as shown in FIG. 6, when the plunger 210 is located in the middle of the low point and the high point, the valve pad 211 of the plunger 210 is formed with the second valve seat 121 and All of the third valve seats 241 are separated from each other, and accordingly, both the second flow path 120 and the first flow path 110 are opened to allow fluid to flow into the third flow path 130 at the same time in both flow paths. Can flow.

According to an embodiment of the present invention, it is possible to exert an effect of controlling the flow of fluid by selectively opening and closing the first flow passage and the second flow passage according to the linear vertical motion of the valve shaft.

According to an embodiment of the present invention, the valve member is rotatably coupled to a connection port provided in the valve body, and each component of the valve member is coupled by a stop ring or the like, so that the effect of easy assembly and disassembly can be exhibited.

According to an embodiment of the present invention, the assembly and disassembly of the valve member is easy, so that the three-way valve can be easily repaired and replaced.

According to an embodiment of the present invention, it is possible to exhibit an effect of improving the durability of a plunger that is driven up and down by including a valve cylinder composed of a toothed passage piece on the plunger.

According to an embodiment of the present invention, the valve cylinder of the plunger is inserted into the first valve seat and moves up and down to prevent the plunger from being separated, thereby improving operational stability.

According to an embodiment of the present invention, it is possible to exhibit an effect of minimizing a water hammer phenomenon that may occur due to opening and closing of a flow path according to driving of a plunger by the shape of the flow piece and the valve cylinder.

As described above, although the embodiments have been described by the limited embodiments and drawings, various modifications and variations are possible from the above description to those of ordinary skill in the art. For example, the described techniques are performed in a different order from the described method, and/or components such as a system, structure, device, circuit, etc. described are combined or combined in a form different from the described method, or other components Or even if it is replaced or substituted by an equivalent water, an appropriate result can be achieved. Therefore, other implementations, other embodiments, and claims and equivalents fall within the scope of the claims to be described later.

100: valve body
110: first passage 111: first valve seat
120: second flow passage 121: second valve seat
130: 3rd euro 140: connection port
200: valve member
210: plunger 211: valve pad
212: valve shaft 213: valve cylinder
213.1: Euro bulkhead 213.2: bulkhead joint
214: flow piece 214.1: flow groove
215: stop ring
220: valve body 221: thread
230: spring member 240: cylinder
241: third valve seat 245: O-ring

Claims (7)

As a three-way valve,
A valve body including a first passage, a second passage, a third passage, and a connection port; And
A valve member inserted into the connection port to selectively open and close the first flow passage and the second flow passage; Including,
The valve member,
A plunger capable of selectively opening and closing the first flow passage and the second flow passage by driving up and down the valve member; Including,
The plunger,
A valve pad for opening and closing a flow path by contacting the first valve seat and the second valve seat respectively provided in the first flow passage and the second flow passage; And
A valve shaft that extends in a driving direction of the plunger to drive the valve pad up and down; Including,
The valve pad is fixed through the valve shaft and can be separated.
The method according to claim 1,
The plunger,
A valve cylinder comprising a toothed flow path piece member positioned at an upper end of the valve pad and opening and closing a flow path in the first valve seat according to vertical driving of the plunger; Further comprising a three-way valve.
The method according to claim 1,
The plunger,
A flow piece positioned at a lower end of the valve pad to open and close the second valve seat according to vertical driving of the plunger; Further comprising, a three-way valve.
The method of claim 3,
The flow piece is,
A three-way valve provided with a flow path groove for adjusting the amount of fluid flowing through the second valve seat according to the vertical driving of the plunger.
The method according to claim 1,
The valve member,
A spring member applying a restoring force to the valve shaft; Including more,
The spring member,
A three-way valve, wherein a force is applied to the valve shaft in a direction outside the connection port, and accordingly, an upper end of the valve shaft can protrude outside the valve member.
The method according to claim 1,
The valve member,
A three-way valve comprising a cylinder made of a toothed flow path piece member that is fixed in contact with the first valve seat to form a flow path connected to the first flow path.
The method of claim 6,
The cylinder,
A three-way valve in contact with the first valve seat and provided with a third valve seat in contact with the valve pad to control fluid flow in the first flow path.

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