KR101878041B1 - Pipe connecting apparatus capable of removing residual pressure and air conditioner - Google Patents

Pipe connecting apparatus capable of removing residual pressure and air conditioner Download PDF

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Publication number
KR101878041B1
KR101878041B1 KR1020160087565A KR20160087565A KR101878041B1 KR 101878041 B1 KR101878041 B1 KR 101878041B1 KR 1020160087565 A KR1020160087565 A KR 1020160087565A KR 20160087565 A KR20160087565 A KR 20160087565A KR 101878041 B1 KR101878041 B1 KR 101878041B1
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KR
South Korea
Prior art keywords
valve
valve chamber
shaft
chamber
hole
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KR1020160087565A
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Korean (ko)
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KR20180006766A (en
Inventor
이종천
고동필
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이종천
고동필
최상진
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Priority to KR1020160087565A priority Critical patent/KR101878041B1/en
Priority to PCT/KR2017/000924 priority patent/WO2018012698A1/en
Publication of KR20180006766A publication Critical patent/KR20180006766A/en
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Publication of KR101878041B1 publication Critical patent/KR101878041B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L29/00—Joints with fluid cut-off means
    • F16L29/04—Joints with fluid cut-off means with a cut-off device in each of the two pipe ends, the cut-off devices being automatically opened when the coupling is applied
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a residual pressure eliminating pipe connecting apparatus and an air conditioner. According to one embodiment of the present invention, a residual pressure removing pipe connecting apparatus includes: a first body having a first valve chamber formed therein; A first valve body installed and supported in the first valve chamber; The first valve hole has a first valve hole therethrough and is elastically supported and resiliently supported by the first valve chamber. With the sliding movement, the periphery of the first valve hole is detached and attached to the first valve body, A first valve seat; A second valve chamber having a second valve seat portion protruding from an inner circumferential surface thereof is formed therein, a front portion thereof is detachably inserted into the first valve chamber and is engaged at the rear of the first body, To open the first valve hole; The second shaft valve is pushed rearward by the end of the first valve body when engaged with the first body of the second body and the second shaft valve is separated from the second valve seat part, A second valve body that opens the flow path of the second valve chamber and moves forward by the elastic force of the second body when the second body is separated and seats on the second valve seat portion to block the flow path; And a connecting fixture having one end supported by the periphery of one of the first and second bodies and the other end of the second body being fastened to the outer peripheral surface of the other one of the first and second bodies when the second body is coupled into the first valve chamber And at least one residual pressure relief hole communicating with the second valve chamber is provided around the front portion of the second body and at least one residual pressure relief groove is formed on the inner circumferential surface of the other end of the connection fixture. Further, an air conditioner including the air conditioner is proposed.

Figure R1020160087565

Description

TECHNICAL FIELD [0001] The present invention relates to a pipe connecting apparatus and an air-

The present invention relates to a piping connecting device and an air conditioner. More particularly, the present invention relates to a pipe connecting apparatus for removing residual pressure of a connecting pipe, which can be safely and easily separated, and an air conditioner having a connecting pipe using the same.

In general, a valve is used to block the flow of a fluid such as gas or liquid or to flow a fluid. Piping applications include air conditioning, heating / cooling, water supply / drainage, ventilation / ventilation, and city gas. When installing piping, it may be necessary to connect two or more pipes for reasons such as the type of installation site, the length limitation of the pipe, and the disassembly and assembly. In this case, there are flange joints, fitting joints, threaded joints, welded joints, adhesive joints, and the like, and a quick connector is used to quickly connect or disconnect the pipe by a pipe joint. Is used.

This quick connector is used when piping is required to be separated. At this time, it is necessary to minimize leakage of the fluid flowing through the piping. Also, it is necessary to be able to easily separate and combine while minimizing the leakage of the fluid during the separation.

When separating the pipe through which the fluid flows, the fluid flowing inside or remaining in the pipe is discharged to the outside of the pipe. However, in the case of separating the connecting piping, it is often necessary to minimize the consumption loss due to the fluid leakage in the piping, and to separate it without substantial consumption loss.

For example, in the case of an air conditioner or an air conditioner such as an air conditioner, separation of a connecting pipe between heat exchangers may be required. For example, it may be necessary to separate the air conditioner main body of the air conditioner such as an air conditioner and the connecting pipe of the outdoor unit from the air conditioner due to repair, moving, and the like. When the connection pipe between the main body of the air conditioner and the outdoor unit of the air conditioner is separated, almost all of the circulating refrigerant in the piping can leak out and it is difficult to reconnect the same. That is, separation or connection is not simple.

In addition, there is a risk that the piping separated by the pressure of the fluid remaining in the piping may suddenly be thrown out when the piping is disconnected.

It may be necessary to isolate the flow path of the fluid not only in the air conditioner and the freezing device but also in other cases. At this time, it is necessary to separate the fluid-flowing pipe safely and easily, and to reconnect the fluid in some cases.

Korean Patent Publication No. 10-2009-0056148 (published on June 03, 2009) Korean Patent Publication No. 10-2010-0066793 (published on June 18, 2010)

However, in the case of a pipe in which a fluid has flowed, a high pressure due to fluid is formed. Even if both sides of the pipe are separated and separated without leakage of the fluid, the one side that is separated during the pipe separation is repelled by the residual pressure There is a risk of going out.

In order to solve the above-mentioned problems, the present invention proposes a residual pressure-relieved pipe connecting apparatus which can prevent the one side separated by the residual pressure from being thrown out during the pipeline separation, thereby enabling safe and easy separation.

In order to solve the above problems, according to one aspect of the present invention, there is provided an internal combustion engine comprising: a first body having a first valve chamber formed therein; A first valve body installed and supported in the first valve chamber; The first valve hole has a first valve hole therethrough and is elastically supported and resiliently supported by the first valve chamber. With the sliding movement, the periphery of the first valve hole is detached and attached to the first valve body, A first valve seat; A second valve chamber having a second valve seat portion protruding from an inner circumferential surface thereof is formed therein, a front portion thereof is detachably inserted into the first valve chamber and is engaged at the rear of the first body, To open the first valve hole; The second shaft valve is pushed rearward by the end of the first valve body when engaged with the first body of the second body and the second shaft valve is separated from the second valve seat part, A second valve body that opens the flow path of the second valve chamber and moves forward by the elastic force of the second body when the second body is separated and seats on the second valve seat portion to block the flow path; And a connecting fixture having one end supported by the periphery of one of the first and second bodies and the other end of the second body being fastened to the outer peripheral surface of the other one of the first and second bodies when the second body is coupled into the first valve chamber Wherein at least one residual pressure relief hole communicating with the second valve chamber is provided around the front portion of the second body and at least one residual pressure relief groove is formed on the inner circumferential surface of the other end of the connection fixture. A pipe connecting device is proposed.

At this time, in one example, when the nut fastening portion of the connection fixture is loosened, the fluid in the second valve chamber retracts from the first valve chamber to the residual pressure removal hole, around the front portion of the second body, And is discharged along the gap between the inner circumferential surface of the seal and the residual pressure removing groove, and the residual pressure of the second valve chamber is removed.

Further, in one example, the first valve seat is returned by the elastic force when the second body is separated, and the periphery of the first valve hole is brought into close contact with the first valve body and the first valve hole is closed, The valve is returned to the front due to the elastic force when the second body is detached, and is brought into close contact with the second valve seat portion at the time of return to close the flow path of the second valve chamber.

At this time, in one example, the first valve chamber has a first ring groove formed on the inner circumferential surface of engagement with the second body, and a first sealing ring for sealing between the inner circumferential surface of the first valve chamber and the outer circumferential surface of the second body And the residual pressure removing hole is disposed in front of a portion of the second body which is in close contact with the first sealing ring at the time of the maximum engagement of the second body and is provided in the second ring groove from the first valve chamber to the second valve chamber, The fluid in the second valve chamber is discharged to the gap between the inner circumferential surface of the first valve chamber and the outer circumferential surface of the front portion of the second body.

The first valve chamber may further include a second ring groove formed on the inner circumferential surface of the sliding section of the first valve seat to seal the inner circumferential surface of the first valve chamber and the outer circumferential surface of the first valve seat. And a second sealing ring is provided in the second ring groove.

In addition, in one example, the residual pressure relief type pipe connecting apparatus includes: a first valve seat provided in the first valve chamber for supporting one end thereof and the other end elastically supporting the first valve seat and surrounding the first valve hole when the second body is separated A first spring for slidingly returning the first valve seat by providing an elastic force to be in close contact with the first valve body; And the second shaft valve is installed in the second valve chamber and has one end supported elastically at the rear side and the other end elastically supports the second shaft valve at the time of separating the second body, And a second spring for advancing and returning the second shaft valve forward. The second valve body includes a second guide hole that is fixedly provided in the second valve chamber on the rear side of the second shaft valve and penetrates the rear shaft of the second shaft valve to guide the retreat and advance of the second shaft valve, And a second valve support portion provided on the second guide hole and forming a flow path opened around the second guide hole.

At this time, in another example, the second shaft valve is protruded forward and rearward, and the front portion of the second shaft valve is in contact with the end portion of the first valve body when the second body is engaged, And a second valve portion protruding from the periphery of the second shaft portion and being in close contact with and detached from the second valve seat portion to block and open the flow passage, the second valve portion includes a fourth ring groove formed at the edge portion, And a fourth sealing ring which is installed in the ring groove and is in close contact with and detached from the second valve seat portion. The first valve body includes a first valve body portion and a first valve body portion that supports the first valve body portion and is fixed to the first valve body. The first valve body portion includes a second valve body portion, And a first valve portion protruding from the periphery of the first valve portion and being in close contact with and detached from the periphery of the first valve hole. The first valve portion is protruded from the protrusion portion And a third sealing ring provided in the third ring groove formed in the first valve support portion and closely attached to and detached from the periphery of the first valve hole. The first fastening portion is bolt-nut-coupled with the second fastening portion formed in the first valve support portion have.

Further, at this time, in still another example, the second valve chamber may include a second valve hole formed by an end of the second valve seat portion protruding from the inner circumferential surface to penetrate the second shaft valve, And the second valve portion includes a second plate portion in the shape of a circular disk and a fourth plate portion in the form of a fourth sealing ring, The fourth ring groove may be formed at an edge portion of the front side of the second plate portion in the coupling direction with the first body, and the fourth ring ring may be a disc annular sealing ring. In addition, the first valve supporting portion is formed with a radial projection on the front side and is screwed to the inner circumferential surface of the first valve chamber, and the second coupling portion is a groove opened rearward. The first valve seat protrudes inward, The first valve body is a first shaft valve having the same structure as that of the second shaft valve, and the second valve body is a first shaft valve, The first valve portion is formed by protruding in the form of a disk on the periphery of the first shaft portion. The first valve portion includes a first plate portion The third ring groove may be formed at an edge portion of the front surface of the first plate portion, and the third sealing ring may be a disc annular sealing ring.

In addition, in one example, the first body may further include a service port formed around the first valve chamber and communicating with the first valve chamber.

Further, in another example, the pressure relief pipe connecting apparatus may further include a pipe connector coupled to at least one of the front side of the first body and the rear side of the second body.

In order to solve the above-mentioned problems, according to another aspect of the present invention, there is provided an air conditioner connected to a first heat exchanger and a second heat exchanger such that refrigerant circulation is performed, And the first and second heat exchangers are separated from each other by separating the residual pressure eliminating pipe connecting device. The air conditioner according to the present invention is characterized in that the first and second heat exchangers are separated from each other.

According to one embodiment of the present invention, it is possible to prevent one side separated by the residual pressure from being thrown out during pipe separation.

In addition, the possibility of damaging the piping parts and the user can be prevented in advance. That is, the pipe can be separated in a state in which the residual pressure is removed, and the pipe can be safely separated.

It is apparent that various effects not directly referred to in accordance with various embodiments of the present invention can be derived by those of ordinary skill in the art from the various configurations according to the embodiments of the present invention.

1 is a cross-sectional view schematically showing a joined state of a residual pressure eliminating pipe connecting apparatus according to an embodiment of the present invention.
FIGS. 2A and 2B are cross-sectional views schematically showing a partially separated state of a residual pressure removing pipe connecting apparatus according to an embodiment of the present invention, respectively.
3 is a cross-sectional view schematically showing a completely separated state of the residual pressure eliminating pipe connecting device according to FIG.
FIG. 4A is a perspective view schematically showing a detached state of a residual pressure eliminating pipe connecting apparatus according to an embodiment of the present invention. FIG.
4B to 4C are perspective views schematically showing an outline of a residual pressure removing pipe connecting apparatus according to an embodiment of the present invention, respectively.
5 is a view schematically showing a second body of a residual pressure eliminating pipe connecting apparatus according to one example of the present invention.
6 is a view schematically showing a connection fixture of a residual pressure removing pipe connecting apparatus according to one example of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing the configuration of a first embodiment of the present invention; Fig. In the description, the same reference numerals denote the same components, and a detailed description may be omitted for the sake of understanding of the present invention to those skilled in the art.

As used herein, unless an element is described as being connected, coupled, or arranged with another element, it is understood that there is no need for any other form of " direct connection, But may also be in the form of being connected, bonded or disposed by intervening components. Also, where described in terms of direction and / or position in the present description, such terms are relative concepts as determined from the bases, wherein the bases may be described directly or not, Can be fully understood from the relationship between the configuration and the related configuration.

It should be noted that, although a singular expression is used in this specification, it can be used as a concept representing a plurality of constitutions as long as it is contrary to the concept of the invention or is not interpreted as being obviously different or contradictory. It is to be understood that the phrases "including", "having", "having", "comprising", etc. in this specification are intended to be additionally or interchangeable with one or more other elements or combinations thereof.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: FIG.

[ Pressure relieving type  Piping connecting device]

A residual pressure removing pipe connecting device according to an embodiment of the present invention will be described in detail with reference to the drawings. Here, reference numerals not shown in the drawings to be referred to may be reference numerals in other drawings showing the same configuration. It should be noted that the configurations disclosed in the respective drawings may be omitted or modified in accordance with variations of the embodiments.

FIG. 1 is a cross-sectional view schematically showing a joined state of a residual pressure eliminating pipe connecting apparatus according to an embodiment of the present invention. FIGS. 2a and 2b are cross-sectional views of a residual pressure eliminating pipe connecting apparatus according to an embodiment of the present invention. FIG. 3 is a cross-sectional view schematically showing a completely separated state of the residual pressure eliminating pipe connecting apparatus according to FIG. 1, and FIG. 4 (a) is a cross- 4B to 4C are perspective views schematically showing the outline of a residual pressure eliminating pipe connecting apparatus according to one embodiment of the present invention, and FIG. 5 is a perspective view schematically showing the external FIG. 6 is a schematic view showing a second body of a residual pressure eliminating pipe connecting device according to an example of the present invention, A view schematically illustrating a connection hole of the geohyeong pipe connecting device.

1 to 4C, a residual pressure removing pipe connecting apparatus according to one example includes a first body 10, a first valve body 30, a first valve seat 50, a second body 20, A second valve body 40 and a connection fixture 70.

A first valve chamber (10a) is formed in the first body (10). The first valve body 30 is installed and supported in the first valve chamber 10a. The first valve seat (50) is resiliently supported and slidably moved in the first valve chamber (10a). At this time, the first valve seat (50) has a first valve hole (51) through which the first valve body (30) passes. The periphery of the first valve hole 51 is detached from the first valve body 30 in accordance with the sliding movement of the first valve seat 50 and the first valve hole 51 is opened and closed. The second body 20 has a second valve chamber 20a having a second valve seat portion 21 protruding from the inner circumferential surface thereof. The front portion of the second body 20 is removably inserted into the first valve chamber 10a and the second body 20 is coupled to the rear of the first body 10. [ When the second body 20 is engaged with the first body 10, the second body 20 pushes the first valve seat 50 forward to open the first valve hole 51. Next, the second valve body 40 is installed in the second valve chamber 20a and includes the second shaft valve 41. [ The second shaft valve 41 of the second valve body 40 is pushed rearward by the end of the first valve body 30 when the second body 20 is engaged with the first body 10, The flow path of the second valve chamber 20a is released from the seat portion 21. When the second body 20 is separated from the first body 10, the second shaft valve 41 of the second valve body 40 is advanced forward by the elastic force, Thereby blocking the flow path. One end 70a of the connection fixture 70 is supported by being fitted around any one of the first and second bodies 10 and 20. The other end of the connecting fixture 70 when the second body 20 is coupled into the first valve chamber 10a is nut-fastened to the outer circumferential surface of the other one of the first and second bodies 10,

1, 2a, 2b, 3 and / or 5, at least one residual pressure removing hole 23 communicating with the second valve chamber 20a is provided around the front portion of the second body 20 do. Referring to FIG. 6, at least one residual pressure removing groove 73 is formed on the inner circumferential surface of the other end of the connection fixture 70. At this time, when the second body 20 is separated from the first body 10, the fluid in the second valve chamber 20a is separated through the residual pressure removing hole 23 and the residual pressure removing groove 73 so as to be separated It is possible to remove the residual pressure of the space to secure the separation.

For example, FIGS. 2A and 2B show a state in which the connection fastener 70 is unfastened. 2A shows a state where the residual pressure removing hole 23 does not exceed the first sealing ring 12a and the sealing is maintained as the second body 20 is partially retracted from the first valve chamber 10a, The fluid in the second valve chamber 20a flows around the front portion of the second body 20 through the residual pressure removing hole 23 as the residual pressure removing hole 23 is retracted beyond the first sealing ring 12a And can escape through the inner circumferential surfaces of the first valve chamber 10a. 2B, when the nut fastening portion of the connection fastener 70 is loosened, the fluid in the second valve chamber 20a is drawn into the residual pressure removing hole (the first valve chamber 10a) by the partial retraction of the second body 20 from the first valve chamber 10a 23 and the gap between the periphery of the front portion of the second body 20 and the inner circumferential surface of the first valve chamber 10a and the residual pressure removing groove 73 and is discharged through the second valve chamber 20a, The residual pressure of some separated space can be removed.

Continuing to refer to Figs. 1 to 3, in another example, the residual pressure removing pipe connecting apparatus may further include a first spring 60a and a second spring 60b. 1 to 3, in another example, the remainder pressure relief pipe connecting apparatus may further include a pipe connector 80. Further,

Hereinafter, each component will be described in detail.

The first and second bodies (10, 20)

First, the first and second bodies 10 and 20 of the residual pressure relief type pipe connecting apparatus will be described.

Referring to FIGS. 1 to 4C, the first body 10 and the second body 20 may be coupled to and separated from each other. For example, a part of the second body 20 may be inserted into the first body 10. In one example, when a part of the second body 20 is inserted into the first body 10, the first and second bodies 10 and 20 are connected to each other by a connecting fastener The insertion of the first body 10 into the interior of the first body 10 can be fixed and supported by screwing the outer peripheral surface of the second body 70 with the remaining outer peripheral surface. The first body 10 and the second body 20 may be made of the same material, but are not limited thereto.

1 to 3, the first body 10 has a first valve chamber 10a formed therein. The first valve chamber (10a) forms a flow path through which the fluid flows. At this time, a part of the second body 20 may be fitted into the first valve chamber 10a. The first valve body 10a of the first body 10 is provided with a first valve body 30 and a first valve seat 50. [ At this time, the first valve body 30 may be fixed to the first valve chamber 10a, and the first valve seat 50 may be slidably moved in the first valve chamber 10a. The first valve body 30 and the first valve seat 50 will be described later.

The second body 20 is inserted into the first valve chamber 10a of the first body 10. The second body 20 can be separated from the first valve chamber 10a of the first body 10. [ For example, the front portion of the second body 20 is removably inserted into the first valve chamber 10a, and the second body 20 is coupled to the rear of the first body 10. The second body 20 has a second valve chamber 20a formed therein. The second valve chamber 20a forms a flow path. At this time, the second valve seat portion 21 protruding from the inner peripheral surface of the second valve chamber 20a is provided. The second shaft valve 41 of the second valve body 40 to be described later is seated and attached to the second valve seat portion 21. For example, when the second body 20 is separated from the first valve chamber 10a of the first body 10, the second valve portion 411 of the second shaft valve 41 is engaged with the second valve seat portion 21, And the second valve portion 411 of the second shaft valve 41 is closed when the second body 20 is coupled to the first valve chamber 10a And the flow path of the second valve chamber 20a is opened at this time. When the second body 20 is coupled with the first body 10, that is, when the second body 20 is inserted into the first valve chamber 10a, the second body 20 pushes the first valve seat 50 forward, The hole 51 is opened.

1, 2a, 2b, 3 and / or 5, at least one residual pressure removing hole 23 communicating with the second valve chamber 20a is provided around the front portion of the second body 20 do. The residual pressure removing hole 23 can remove the residual pressure of the space separated by allowing the fluid in the second valve chamber 20a to escape when the second body 20 is separated from the first body 10. [ If the second valve chamber 20a and the first valve chamber 10a are separated from the first body 10 when the second body 20 is not provided with the residual pressure removing hole 23 as in the present invention, The residual pressure of the fluid remaining in the separation space of the separating space, that is, the residual pressure, can be repelled as if it explodes, which may cause a safety problem. At this time, the residual pressure removing hole 23 is formed with the residual pressure removing groove 73 formed on the inner peripheral surface of the other end of the connection fixture 70, which will be described later, so that the fluid in the second valve chamber 20a can escape to the outside, Thereby making it possible to safely and easily perform the separation of the main body 20.

For example, in FIGS. 1, 2a, 2b, 3 and / or 5, the pressure-relief hole 23 is shown as a hole passing through the front portion of the second body 20, The second valve chamber 20a may be formed so as to have a groove structure extending from the front end of the second body 20 to the rear side and the outer periphery of the front portion of the second body 20 and the second valve chamber 20a.

1 to 4C, a connection fixture 70 may be provided at one end of the first body 10 and the second body 20, respectively. 1 to 4c show a connecting fixture 70 having one end supported on the periphery of the second body 20 at the time of detachment. Alternatively, one end of the connection fixture 70 may be provided around the first body 10 May be supported. The other end of the connecting fixture 70 is nut-coupled around the outer circumferential surface of the other one of the first body 10 and the second body 20 when the second body 20 is engaged and the first body 10 and the second body 20 The engagement of the body 20 can be fixed.

In this specification, the rear side of the first body 10, the first valve body 30 and the first valve seat 50 refers to the side to which the second body 20 is coupled, and the front side refers to the opposite side Is interpreted. The front side of the second body 20 and the second valve body 40 is interpreted to mean the side where the second body 20 is coupled to the first body 10 and the rear side means the opposite side .

The sealing structure when the second body 20 is coupled with the first body 10 will be described. The second valve chamber 20a and the first valve chamber 10a are communicated with each other by the insertion into the first valve chamber 10a of the second body 20 to form a flow path. At this time, between the first valve chamber 10a and the inserted portion of the second body 20 is sealed so that the fluid flowing through the communication path between the first valve chamber 10a and the second valve chamber 20a is not leaked .

Referring to Figs. 1 to 3, in one example, the first valve chamber 10a may have a first ring groove 11a formed on the inner circumferential surface of the engagement side with the second body 20. A first sealing ring 12a is provided in the first ring groove 11a. The first sealing ring 12a seals between the inner peripheral surface of the first valve chamber 10a and the outer peripheral surface of the second body 20. For example, the first sealing ring 12a may be an O-ring of an elastic material, such as a rubber O-ring. The first sealing ring 12a can seal between the outer circumferential surface of the second body 20 and the inner circumferential surface of the first valve chamber 10a when the second body 20 is inserted into the first body 10.

1, the residual pressure removing hole 23 formed around the front portion of the second body 20 at the time of the maximum engagement of the second body 20 is in contact with the first sealing ring 12a As shown in FIG. 2B, the residual pressure removing hole 23 is formed in a part retreat of the second body 20 from the first valve chamber 10a due to the partial unlocking of the nut fastening portion of the connection fastener 70 And is disposed rearwardly of the portion to be closely contacted by the first sealing ring 12a. 2B, since the residual pressure removing hole 23 is disposed behind the portion where the residual pressure removing hole 23 is closely contacted by the first sealing ring 12a, the fluid in the second valve chamber 20a flows into the first valve chamber 10a, And the outer circumferential surface of the front portion of the second body 20, as shown in Fig.

Although not shown, when only one first ring groove 11a and one first sealing ring 12a are provided on the inner circumferential surface of the first valve chamber 10a, the first sealing ring 12a is connected to the second body 20a The outer circumferential surface of the first valve seat 50 is closed when the second body 20 is detached from the outer circumferential surface of the first valve seat 10a when the second body 20 is inserted, It is possible to seal between the inner circumferential surface of the inner wall 10a. In this case, the residual pressure removing hole 23 is disposed forward of the portion of the second body 20 which is in close contact with the first sealing ring 12a at the time of the maximum engagement of the second body 20, Is disposed rearwardly of a portion which is brought into close contact with the first sealing ring 12a according to the partial retreat. At this time, the residual pressure removing hole 23 may be formed near the front end of the second body 20.

Referring to one example with reference to Figs. 1 to 3, the first valve chamber 10a may further include a second ring groove 11b on the inner circumferential surface thereof. The second ring groove 11b is formed on the inner circumferential surface of the sliding section of the first valve seat 50 to be described later. And a second sealing ring 12b is provided in the second ring groove 11b. The second sealing ring 12b seals between the inner circumferential surface of the first valve chamber 10a and the outer circumferential surface of the first valve seat 50. [

2A, the other end of the first valve body 30 and one end of the second shaft valve 41 are separated from each other during the separation of the first and second bodies 10 and 20, The first sealing ring 12a seals between the outer circumferential surface of the first valve seat 50 and the inner circumferential surface of the first valve chamber 10a at the time when the flow paths of the chambers 10a and 20a are shut off, 12b seal between the outer peripheral surface of the second body 20 and the inner peripheral surface of the first valve chamber 10a. Accordingly, since the flow paths of the first body 10 and the second body 20 are individually blocked before the first body 10 and the second body 20 are completely separated from each other, Or leakage of refrigerant can be minimized. As a result, the leakage of the fluid in the pipe is minimized, and the pipe can be separated without substantial fluid loss (leakage). 2B, when the residual pressure removing hole 23 is partially withdrawn from the second body 20 before the first body 10 and the second body 20 are completely separated from each other, The fluid in the second valve chamber 20a flows into the gap between the inner circumferential surface of the first valve chamber 10a and the outer circumferential surface of the front portion of the second body 20 by the ring 12a, Can be discharged.

Referring to Figs. 1 to 3, the second valve chamber 20a will be described in more detail. In one example, the second valve chamber 21a is formed by the end portion of the second valve seat portion 21 protruding from the inner circumferential surface of the second valve chamber 20a. The second valve hole 21a provided in the second valve chamber 20a penetrates the second shaft valve 41 described later. At this time, the end portion of the second valve seat portion 21 around the second valve hole 21a may have a protrusion 211 protruding rearward, which is opposite to the direction of engagement with the first body 10. At this time, the projection 211 of the second valve seat portion 21 is a portion where the second shaft valve 41 is seated. The second valve portion 411 of the second shaft valve 41 described later, for example, the fourth sealing ring 411c, is brought into close contact with the projection 21a so that the flow path of the second valve chamber 20a can be shut off.

Next, the structure of the first valve chamber 10a and the second valve chamber 20a will be described in more detail. Referring to Figs. 1 to 3, in one example, a first step 13a is formed at the front side of the inner circumferential surface of the first valve chamber 10a to support a front side end portion of a first valve body 30 . In this case, the first step 13a may be formed by the tube connecting portion 17 formed on the front side of the first body 10 as shown in Figs. 1 to 3, or may be separately formed . Referring to FIGS. 1 to 3, for example, the inner circumferential surface of the first valve chamber 10a may be provided with a third step 13b for supporting one end of a first spring 60a, which will be described later. The third step 13b may be provided on the rear side of the first step 13a. For example, the inner diameter of the first step 13a may be smaller than the inner diameter of the third step 13b.

1 to 3, in one example, a second step 22 for supporting a second valve supporting portion 43, which will be described later, may be additionally formed on the inner circumferential surface of the second valve chamber 20a.

For example, referring to FIGS. 1 to 4C, the first body 10 may have a tube connecting portion 17 formed on the front side, that is, on the opposite side to which the second body 20 is coupled. Alternatively, the tube connecting portion 17 may be formed on the rear side of the second body 20, as shown in Figs. Referring to FIGS. 1 to 4C, the pipe connecting portion 17 may be formed in various shapes as a portion for connecting pipes.

1 to 4C, in one example, the first body 10 may further include a service port 15 formed around the first valve chamber 10a and communicating with the first valve chamber 10a. The fluid can be replenished to the first valve chamber 10a through the service port 15 or the fluid can be drained from the first valve chamber 10a. The other side of the service port 15 can be blocked with a stopper (not shown). For example, the service port 15 may be formed to communicate with the third step 13b.

1st Valve body (30) and the second Valve body (40)

Next, the first valve body 30 and the second valve body 40 will be described. The first valve body 30 is installed and supported in the first valve chamber 10a and the second valve body 40 is provided in the second valve chamber 20a.

1 to 3, the first valve body 30 penetrates the first valve hole 51 of the first valve seat 50 to be described later. The first valve body 30 may be fixed at one end, for example, the front side thereof to the first valve chamber 10a. For example, the first valve body 30 may be fixed at one end to the first step 13a of the first valve chamber 10a and installed in the first valve chamber 10a. At this time, a flow path is formed in the clearance space between the inner circumferential surface of the first valve chamber 10a and the first valve body 30. The other end of the first valve body 30 is installed to pass through the first valve hole 51 of the first valve seat 50 to be described later.

For example, as shown in FIGS. 1 to 3, the first valve body 30 is fixedly installed in the first valve chamber 10a by providing a tube connecting portion 17 formed integrally with the first body 10 The front portion of the first body 10 is inserted into the first valve chamber 10a through the rear portion of the first body 10 and the front portion of the first body 10 is inserted into the rear portion of the second body 20 of Figs. The first valve support portion 33 of the first valve body 30 may be inserted into the first valve chamber 10a through the front side of the first body 10 when the first valve body 30 is formed in the same or similar structure. The fixing of the second valve body 40 into the second valve chamber 20a can be inserted through the rear side of the second body 20 as shown in Figs.

Referring to Figs. 1 to 3, the second valve body 40 includes a second shaft valve 41. The second shaft valve 41 of the second valve body 40 is pushed rearward by the end of the first valve body 30 when the second body 20 is engaged with the first body 10. At this time, the second shaft valve 41 leaves the second valve seat portion 21 to open the flow path of the second valve chamber 20a. When the second body 20 is separated from the first body 10, the second shaft valve 41 of the second valve body 40 is advanced forward by the elastic force, Thereby blocking the flow path. In one example, the second shaft valve 41 is returned to the front due to the elastic force when the second body 20 is disengaged, for example, the elastic force of the second spring 60b described later, 21 so as to close the flow path of the second valve chamber 20a. That is, when the second shaft valve (41) is separated from the first valve chamber (10a) of the second body (20), the flow path of the second valve chamber (20a) And the flow path of the second valve chamber 20a is opened when the valve 10a is inserted into the chamber 10a.

For example, in one example, the second valve body 40 may further include a second valve support portion 43 in addition to the second shaft valve 41. At this time, the second valve support portion 43 may include a second guide hole 43a fixedly installed in the second valve chamber 20a and guiding the retraction and advancement of the second shaft valve 41. A more detailed description will be given later. For example, the second valve body 40 may be made of stainless steel, but is not limited thereto.

Referring to Figs. 1 to 3, the second valve element 40 will be described in detail. First, the second shaft valve 41 of the second valve body 40 will be described. In one example, the second shaft valve 41 has a second shaft portion 413 and a second valve portion 411. The second shaft portion 413 is protruded forward and backward. The front portion of the second shaft portion 413 contacts the end portion of the first valve body 30 when the second body 20 is engaged with the first body 10. At this time, the front portion of the second shaft portion 413 passes through the second valve hole 21a formed by the second valve seat portion 21, and contacts the end portion of the first valve body 30. The rear portion of the second shaft portion 413 passes through the second guide hole 43a of the second valve support portion 43, which will be described later. At this time, the back-and-forth movement of the second shaft valve 41 is guided by the second guide hole 43a.

The second valve portion 411 is protruded in a circular plate shape around the second shaft portion 413. At this time, the second valve portion 411 is closely attached to and detached from the second valve seat portion 21 to block and open the flow path. 2A and 2B, the second shaft valve 41 is configured such that when the second body 20 is separated from the first valve chamber 10a, the second valve portion 411 is moved from the rear side And is seated on the second valve seat portion 21 of the second valve chamber 20a and blocks the flow path of the second valve chamber 20a. For example, when the second body 20 is separated from the first valve chamber 10a, the second valve portion 411 is seated on the second valve seat portion 21 by the elastic force of the second spring 60b, . Referring to FIG. 1, the second shaft valve 41 is pushed rearward by the other end of the first valve body 30 when the second body 20 is inserted and inserted, and the second valve portion 411 is pushed rearward by the second valve And the flow path of the second valve chamber 20a is opened while being separated from the seat portion 21. [

The second valve portion 411 may include a fourth ring groove 411b and a fourth ring 411c for blocking and opening the flow path through the attachment and detachment of the second valve seat portion 21. [ The fourth ring groove 411b is formed at the edge portion of the second valve portion 411. [ The fourth sealing ring 411c is installed in the fourth ring groove 411b and is closely attached to and detached from the second valve seat portion 21. [ For example, the fourth sealing ring 411c is in close contact with the projection 211 of the second valve seat portion 21 to seal the flow path of the second valve chamber 20a. For example, the fourth sealing ring 411c may be formed of a resin material, for example, a Teflon resin material.

1 to 3, in one example, the second valve portion 411 may further include a second plate portion 411a and a cover portion 411d. The second plate portion 411a protrudes in the shape of a disk around the second shaft portion 413. The cover portion 411d fixes the fourth sealing ring 411c to the fourth ring groove 411b. The cover portion 411d can prevent the fourth sealing ring 411c from falling off the fourth ring groove 411b. The cover portion 411d is provided on the front surface side of the second plate portion 411a and covers the fourth sealing ring 411c so as to partially expose the fourth sealing ring 411c. And the exposed fourth sealing ring 411c region becomes a portion where the second valve seat portion 21 is seated. At this time, the fourth ring groove 411b is formed at the edge portion of the front surface side of the second plate portion 411a in the coupling direction with the first body 10. The fourth sealing ring 411c may be a disk annular sealing ring.

Next, the second valve support portion 43 of the second valve body 40 will be described in detail. Referring to FIGS. 1 to 3, in one example, the second valve body 40 may further include a second valve support 43 in addition to the second shaft valve 41. The second valve support portion 43 is fixedly installed in the second valve chamber 20a on the rear side of the second shaft valve 41. [ The second valve support portion 43 includes a second guide hole 43a. The second guide hole 43a penetrates the rear shaft of the second shaft valve 41, that is, the rear portion of the second shaft portion 413, so as to guide the retraction and advancement of the second shaft valve 41. [ The second valve support portion 43 also forms a flow path opened around the second guide hole 43a, that is, at least one flow path hole 43b. For example, the at least one flow path hole 43b may be arranged radially around the second guide hole 43a. For example, as shown in FIGS. 1 to 3, the second valve supporting portion 43 may include a protrusion for receiving a second spring 60b to be described later, and a second guide hole 43a may be formed in the protrusion, , And a plate shape having the second guide hole 43a and the flow hole 43b without protrusions.

For example, in one example, the second valve support 43 may be supported by a second step 22 formed on the inner circumferential surface of the second valve chamber 20a and may support the other end of a second spring 60b . The second valve supporting portion 43 can be supported on the one surface side, for example, the surface side supporting the second spring 60b at the second step 22. 1 to 3, the other side of the second valve supporting portion 43 is not supported or shown by the snap ring 47, but the tube connector 80 described later is not supported by the snap ring 47, And may be supported by the end of the tube connector when the tube is inserted into the back of the valve chamber 20a.

Referring to Figs. 1 to 3, the first valve body 30 will be described in more detail. In one example, the first valve body 30 may include a first valve body portion 31 and a first valve support portion 33. At this time, the first valve body 31 passes through the first valve hole 51 of the first valve seat 50 described later, and the first valve support 33 supports the first valve body 31 And can be fixed to the first valve chamber 10a. The first valve body 30 or the first valve body 31 of the first valve body 30 may be made of stainless steel and is not limited thereto.

For example, referring to FIGS. 1 to 4A, the first valve body 31 may include a rear protrusion 313b, a first fastening portion 313a, and a first valve portion 311. The rearward projecting portion 313b pushes the front end of the second shaft valve 41, for example, the front end of the second shaft portion 413, when the second body 20 is engaged. That is, the first valve body 30 is fixed to the first valve chamber 10a while the first valve support portion 33 is fixed to the first valve chamber 10a even when the second body 20 is inserted and inserted, The rear end of the first valve body portion 31 at the time of insertion of the second body 20 is elastically supported in the second valve chamber 20a of the body 20 by the second shaft valve 41 As shown in Fig. At this time, the second valve portion 411 of the second shaft valve 41 is moved to the second valve chamber 20a by the pushing of the second shaft valve 41 by the rear end of the first valve body portion 31 And the flow path of the second valve chamber 20a is opened. The first coupling part 313a is formed at the front end of the first valve body part 31 and is coupled to the first valve supporting part 33. [ The first valve portion 311 protrudes from the periphery of the first valve body portion 31 and is closely attached to and detached from the periphery of the first valve hole 51 of the first valve seat 50 to be described later. At this time, the first valve portion 311 may include a third ring groove 311b and a third sealing ring 311c. The third ring groove 311b is formed at a protruding portion protruding from the periphery of the first valve body portion 31. [ The third sealing ring 311c is provided in the third ring groove 311b and is closely attached to and detached from the periphery of the first valve hole 51. [ When the second body 20 is detached from the first valve chamber 10a, the third valve seat 50 is brought into contact with the third sealing ring 311c in accordance with the elastic movement of the first valve seat 50 The periphery of the first valve hole 51 is closely contacted and the flow path of the first valve chamber 10a is blocked. At this time, the first fastening part 313a may be bolted to the second fastening part 33b formed on the first valve supporting part 33.

For example, referring to Figs. 1-3, in one example, the first valve body portion 31 may be a first shaft valve 31 having the same structure as that of the second shaft valve 41. At this time, the rear protruding portion 313b and the protruding front portion of the first valve body portion 31 form the first shaft portion 313 of the first shaft valve 31. The protruding front portion of the first shaft portion 313 protrudes to form a first fastening portion 313a. The first valve portion 311 is formed around the first shaft portion 313 in a disc shape. The first valve portion 311 may further include a cover portion 311d that fixes the disk-shaped first plate portion 311a and the third sealing ring 311c to the third ring groove 311b. The third ring groove 311b may be formed at the edge portion of the front surface of the first plate portion 311a, and the third sealing ring 311c may be a disc annular sealing ring. At this time, the front surface of the first plate portion 311a is a direction side surface in which the first fastening portion 313a is formed.

Further, though not shown, according to the embodiment, the first valve body portion 31 may have a different structure from that of the second shaft valve 41. For example, the third ring groove of the first valve body portion 31 is formed such that the opening portion is radially directed at a portion protruding from the periphery, the third sealing ring provided in the third ring groove is made of an elastic O-ring, The end of the first valve hole 51 of the first valve seat 50 is in close contact with the third sealing ring and the flow passage is blocked.

The first valve support portion 33 will be further described with reference to Figs. For example, in one example, the first valve support portion 33 is formed with a radial projection 33a on the front side and screwed to the inner peripheral surface of the first valve chamber 10a. For example, the front radial projection 33a of the first valve support portion 33 can be supported at the first step 13a of the first valve chamber 10a. At this time, the front radial projection 33a of the first valve support portion 33 is screwed on the inner circumferential surface of the first valve chamber 10a and can be supported on the first step 13a. The second fastening portion 33b of the first valve supporting portion 33 is a groove opened rearward and the first fastening portion 313a of the first valve body 31 is screwed into the second fastening portion 33b, .

The first valve seat (50)

Next, the first valve seat 50 will be described with reference to Figs. The first valve seat (50) is resiliently supported and slidably moved in the first valve chamber (10a). At this time, the first valve seat (50) has a first valve hole (51) through which the first valve body (30) passes. For example, the first valve hole 51 is penetrated by the first valve body portion 31 of the first valve body 30. At this time, the first valve seat (50) can slide along the periphery of the first valve body portion (31) of the first valve body (30). That is, the first valve seat 50 slides forward in accordance with the insertion of the second body 20 into the first valve chamber 10a and slides rearward by the elastic force in accordance with separation of the second body 20, You can retreat. The periphery of the first valve hole 51 is detached from the first valve body 30 in accordance with the sliding movement of the first valve seat 50 and the first valve hole 51 is opened and closed. The elastic support for the first valve seat 50 can be achieved by, for example, a first spring 60a described later. The first valve seat 50 may be made of the same material, but is not limited thereto.

For example, the first valve seat 50 is returned by the elastic force when the second body 20 is separated, and the first valve seat 51 is returned to the first valve body 30, And the first valve hole 51 can be closed at this time.

The outer circumferential surface of the first valve seat 50 is slidably installed in the first valve chamber 10a and may be installed so as to maintain sealing with the inner circumferential surface of the first valve chamber 10a. For example, the inner circumferential surface of the first valve chamber 10a and the outer circumferential surface of the first valve seat 50 can be sealed by the sealing ring provided in the ring groove of the first valve chamber 10a. 1 to 3, the inner circumferential surface of the first valve chamber 10a and the inner circumferential surface of the first valve seat 50 are connected by the second sealing ring 12b provided in the second ring groove 11b of the first valve chamber 10a, As shown in Fig. In this case, the second sealing ring 12b is disposed within the sliding range of the first valve seat 50, so that during the sliding interval of the first valve seat 50 due to insertion and separation of the second body 20, The inner circumferential surface of the first valve seat 10a and the outer circumferential surface of the first valve seat 50 can be sealed.

For example, referring to Figures 1-3, in one example, the first valve seat 50 forms a first valve hole 51 by an inwardly projecting portion. At this time, the protrusion 511 protruding rearward in the direction in which the second body 20 is coupled may be formed around the first valve hole 51 protruding inward. At this time, when the protrusion 511 protruding around the first valve hole 51, that is, rearward, is separated from the first valve chamber 10a of the second body 20, Can be seated on the third sealing ring 311c constituting the body portion 31, for example, the first valve portion 311 of the first valve body portion 31. [

1 to 3, the first valve seat 50 may be formed with an inclined surface (not shown) so as to have a smaller inner diameter toward the first valve hole 51 side, although not shown in the drawings. have. At this time, though not shown, an end of the inclined surface or the inclined surface is formed in the third ring groove opened radially around the first valve body 30 when the second body 20 is separated from the first valve chamber 10a And the flow path of the first valve hole 51 can be blocked by the third sealing ring.

connect Fixture (70)

Next, the connection fixture 70 is examined. Referring to FIGS. 1 to 4C, the connection fixture 70 is supported at one end by being fitted around one of the first and second bodies 10, 20. The other end of the connection fixture 70 is fastened to the outer peripheral surface of the other one of the first and second bodies 10 and 20 when the second body 20 is coupled into the first valve chamber 10a. Accordingly, the engagement of the first body 10 and the second body 20 is fixed by fastening the connection fastener 70. [ The connection fixture 70 may be made of copper, but is not limited thereto.

Referring to FIG. 6, at least one residual pressure removing groove 73 is formed on the inner circumferential surface of the other end of the connecting fixture 70. At this time, when the second body 20 is separated from the first body 10, the second valve 20 is formed through the residual pressure removing hole 23 and the residual pressure removing groove 73 formed around the front portion of the second body 20, The fluid in the chamber 20a is allowed to escape and the residual pressure of the separated space can be removed to secure the separation. For example, the residual pressure removing groove 73 is formed in a part of the inner circumferential threaded region coupling section of the connecting fixture 70 to be fastened to the outer peripheral surface of the other one of the first and second bodies 10 and 20 by a nut, 70 can be partially unwound and the fluid can be effectively discharged through the residual pressure-relief groove 73.

1 to 4C, one end of the connection fixture 70 is shown supported by being fitted around the second body 20 and the other end of the connection fixture 70 is fastened to the outer circumference of the first body 10 by a nut . According to the embodiment, unlike the illustrated embodiment, one end of the connection fixture 70 may be supported around the first body 10 and the other end may be fastened to the outer circumferential surface of the second body 20 by a nut.

For example, referring to FIGS. 1, 2A, 2B, 3 and 6, one end of the connection fixture 70 is bent in the center direction and supported around any one of the first body 10 and the second body 20 . The step 24 may protrude from an outer circumferential surface of the first body 10 or the second body 20, where the bending portion of the connection fixture 70 is supported. At this time, when the nut is fastened to the outer peripheral surface of the other one of the first body 10 and the second body 20, the bent portion of the connection fastener 70 is caught by the step 24, 10 and the other end of the second body 20 so that the tightening range of the nut can be limited. The fluid that has exited through the residual pressure removing hole 23 during the separation of the second body 20 passes between the step 24 and the other end of the first body 10 and the second body 20, Can be discharged to the outside through the residual pressure removing groove (73) formed on the inner peripheral surface of the connection fixture (70).

The first spring 60a and the second spring 60b,

Referring to Figs. 1 to 3, in one example, the residual pressure removing pipe connecting apparatus may further include a first spring 60a and a second spring 60b. The first spring 60a is installed in the first valve chamber 10a and is supported at one end. The other end of the first spring 60a elastically supports the first valve seat 50. At this time, the first spring 60a may be installed around the circumference of the first valve body 30. For example, one end of the first spring 60a may be supported at the third step 13b formed on the inner circumferential surface of the first valve chamber 10a as shown in Figs. 1 to 3, May be supported on the first valve support portion (33) of the first valve body (30) fixedly installed on the first valve body (10a). The other end of the first spring 60a elastically supports the front end of the first valve seat 50 and can transmit the elastic force to the first valve seat 50 when the second body 20 is separated. The first spring 60a urges the first valve body 51 so that the periphery of the first valve hole 51 is in close contact with the first valve body 30 when the second body 20 is separated from the first valve chamber 10a So that the first valve seat 50 can be returned to the sliding position. That is, when the second body 20 is inserted into the first valve chamber 10a, the first spring 60a pushes the first valve seat 50, which is supported by the first spring 60a, And provides the elastic force accumulated in the first spring 60a to the first valve seat 50 when the second body 20 is separated from the first valve chamber 10a. The first valve seat 50 is moved along the first valve chamber 10a by the elastic force of the first spring 60a and thereby the first valve body 30 of the first valve body 30 The first valve hole 51 of the first valve seat 50 is closed and the flow path of the first valve chamber 10a can be shut off.

On the other hand, the second spring 60b is installed in the second valve chamber 20a and one end is supported. The other end of the second spring 60b elastically supports the second shaft valve 41 at the rear side. For example, the second spring 60b is installed on the rear side of the second shaft valve 41, for example, around the rear side periphery of the second valve portion 411. [ For example, one end of the second spring 60b may be supported by a second valve support 43 as shown in Figs. 1-3, or may be supported by a step formed on the inner circumferential surface of the second valve chamber 20a . The other end of the second spring 60b can support the second shaft valve 41 on the rear side, for example, on the rear surface of the second valve portion 411. [ The second spring 60b provides an elastic force such that the second shaft valve 41 is brought into close contact with the second valve seat portion 21 when the second body 20 is separated from the first valve chamber 10a can do. At this time, the second spring 60b can advance and return the second shaft valve 41 forward, and can be brought into close contact with the second valve seat portion 21. [ That is, the second spring 60b is moved in accordance with the pivoting of the second shaft valve 41 by the rear end of the first valve body 30 when the second body 20 is inserted into the first valve chamber 10a When the second body 20 is separated from the first valve chamber 10a, elastic force is applied to the second valve portion 411 of the second shaft valve 41 and the second valve portion 411 are seated on the second valve seat portion 21 to be sealed.

The tube connector (80)

Referring to Figs. 1 to 4C, in another example, the unventilated pipe connecting apparatus may further include a pipe connector 80. Fig. The tube connector 80 may be coupled to at least one of the front side of the first body 10 and the rear side of the second body 20. [ 1 to 4C, the tube connector 80 is shown coupled to only the rear side of the second body 20 and the first body 10 is shown to include the tube connecting portion 17, The tube connector 80 may be provided for both the first body 10 and the second body 20. For example, the tube connector 80 may be a nipple, a union, or other tube joint. The pipe connector 80 may be made of copper, but is not limited thereto.

When the pipe connector 80 is provided, the pipe connector 80 is detached to separate the first valve chamber 10a and / or the second valve 10a in the separate direction of the first body 10 and / or the second body 20, The first valve body 30 and / or the second valve body 40 can be inserted into the chamber 20a. Thus, as shown in Figs. 1 to 3, the second valve chamber 20a is opened by the second valve seat portion 21 protruding from the inner circumferential surface of the second valve chamber 20a at the front side of the second valve chamber 20a The second valve body 40 can be inserted into the second valve chamber 20a by separating the pipe connector 80 coupled to the rear side of the second body 20 when the insertion of the second valve body 40 is difficult.

1 to 3, the pipe connector 80 may be screwed to the outer surface of the second body 20 or / and the first body 10, or may be screwed to the outer surface of the second body 20 20 and / or the inner circumferential surface of the first valve chamber 10a of the first body 10, as shown in FIG. A seal ring 81b may be provided at a joint portion between the pipe connector 80 and the second body 20 or / and the first body 10 to seal the joint gap. For example, the sealing ring 81b is inserted into the ring groove 81a of the pipe connector 80 and can seal the joint between the pipe connector 80 and the second body 20 or / and the first body 10 have.

1 to 4C may be integrally provided without the pipe connector 80 detachable from the first body 10 and the second body 20 according to the embodiment of the present invention.

4B to 4C, the bracket 90 may be provided around the first body 10 and / or the second body 20. [ The bracket 90 serves to fix the residual pressure relief type pipe connecting device to be supported on a wall or other support. For example, the bracket 90 may be coupled with a wall or other support by means of bolts or other fastening means to fix and support the residual pressure relief pipe connecting device. For example, the bracket 90 may be provided only on one side of the first body 10 and the second body 20.

In the residual pressure relief piping connecting apparatus according to the present invention, piping may be connected to both sides, and a piping connector may be connected to one side and a piping connector (not shown) connected to a facility where piping connection is required.

[Air conditioning equipment]

Next, an air conditioner according to another embodiment of the present invention will be described. The air conditioner is an air conditioner connected to the first and second heat exchangers (not shown) by a connection pipe so as to circulate. For example, it may be an air conditioner in which a main body which is a first heat exchanger and a condenser (outdoor unit) which is a second heat exchanger are connected by a connection pipe. At this time, one embodiment of the residual pressure eliminating pipe connecting device according to one aspect of the present invention described above may be installed in the connecting pipe. Accordingly, the connection pipe can be separated by separating the residual pressure eliminating pipe connecting device and separation of the first and second heat exchange devices can be performed.

For example, when the air conditioner main body and the air conditioner outdoor unit are connected to each other through the connection pipe and the connecting pipe is provided with the residual pressure removing pipe connecting device according to any one of the above embodiments, the air conditioner main body and the air conditioner outdoor unit can be easily It can be separated and later reassociated easily.

At this time, the residual pressure eliminating pipe connecting device installed in the connecting pipe will be described with reference to the embodiment described in the above-mentioned embodiment of the invention, and a detailed description thereof will be omitted.

The foregoing embodiments and accompanying drawings are not intended to limit the scope of the present invention but to illustrate the present invention in order to facilitate understanding of the present invention by those skilled in the art. Embodiments in accordance with various combinations of the above-described configurations can also be implemented by those skilled in the art from the foregoing detailed description. Accordingly, various embodiments of the present invention may be embodied in various forms without departing from the essential characteristics thereof, and the scope of the present invention should be construed in accordance with the invention as set forth in the appended claims. Alternatives, and equivalents by those skilled in the art.

10: first body 10a: first valve chamber
11a, 11b, 311b, 411b: ring grooves 12a, 12b, 311c, 411c, 81b:
13a, 13b, 22, 24: step 15:
17: tube connecting part 20: second body
20a: second valve chamber 21: second valve seat portion
21a: second valve hole 211, 511: projection
23: residual pressure removing hole 30: first valve body
31: a first valve body portion or a first shaft valve
311, 411: Valve parts 311a, 411a: Plate part
311d, 411d: cover portion 313, 413: shaft portion
33: first valve supporting portion 33a: radial projection
33b: second fastener 40: second valve element
41: first shaft valve 43: second valve support
43a: second guide hole 43b: channel hole
50: first valve seat 51: first valve hole
60a: first spring 60b: second spring
70: connecting fixture 73: residual pressure removing groove
80: pipe connector

Claims (11)

A first body having a first valve chamber formed therein;
A first valve body supported by the first valve chamber;
Wherein the first valve hole has a first valve hole therethrough and is elastically supported and resiliently supported by the first valve chamber so that the periphery of the first valve hole is detached from the first valve body according to the sliding movement, A first valve seat in which one valve hole is opened and closed;
A second valve chamber having a second valve seat portion protruded on an inner circumferential surface thereof is formed therein and a front portion thereof is detachably inserted into the first valve chamber and engaged at a rear side of the first body, A second body for pushing the seat forward to open the first valve hole;
Wherein the second shaft valve is pushed rearward by the end of the first valve body when the second body is engaged with the first body, and the second shaft valve is mounted on the second valve chamber, The second shaft valve is forwardly moved forward by the resiliency when the second body is separated from the valve seat portion away from the valve seat portion, and the second shaft valve is seated on the second valve seat portion, A valve body; And
One end of the second body is inserted into the first valve chamber and the other end of the second body is engaged with the outer circumferential surface of the other one of the first and second bodies And a connecting fixture,
At least one residual pressure relief hole communicating with the second valve chamber is provided around the front portion of the second body and at least one residual pressure relief groove is formed on the inner circumferential surface of the other end of the connection fixture,
Wherein when the nut fastening portion of the connection fastener is loosened, the fluid in the second valve chamber is moved around the front portion of the second body and the first valve body in accordance with the partial retreat of the second body from the first valve chamber, And the remaining pressure of the second valve chamber is removed along the gap between the inner circumferential surface of the seal and the residual pressure removing groove.
delete In claim 1,
The first valve seat is returned by the elastic force when the second body is separated, and when the valve body is returned to the first valve seat, the periphery of the first valve hole is brought into close contact with the first valve body,
Wherein the second shaft valve is returned to the front due to the elastic force when the second body is separated and is brought into close contact with the second valve seat portion upon returning to close the flow path of the second valve chamber. Connecting device.
In claim 3,
Wherein the first valve chamber has a first ring groove formed on an inner circumferential surface on the engagement side with the second body,
A first sealing ring is provided in the first ring groove to seal between an inner circumferential surface of the first valve chamber and an outer circumferential surface of the second body,
Wherein the residual pressure removing hole is disposed forward of a portion where the second sealing ring is brought into close contact with the first sealing ring when the second body is engaged with the second body, The fluid in the second valve chamber is discharged to the gap between the inner peripheral surface of the first valve chamber and the outer peripheral surface of the front portion of the second body Wherein the pipe connecting device is a pipe connecting device.
In claim 4,
Wherein the first valve chamber further comprises a second ring groove formed on the inner circumferential surface of the sliding section of the first valve seat,
Wherein the second ring groove is provided in the second ring groove to seal between the inner circumferential surface of the first valve chamber and the outer circumferential surface of the first valve seat.
The method according to any one of claims 1, 3, 4, and 5,
The residual pressure eliminating pipe connecting apparatus comprises:
And an elastic force is provided in the first valve chamber so that one end is supported and the other end elastically supports the first valve seat and the periphery of the first valve hole is in close contact with the first valve body when the second body is detached A first spring for slidingly returning the first valve seat; And
The second shaft valve being provided in the second valve chamber and having one end supported elastically at the rear side of the second shaft valve at the other end and the second shaft valve is brought into close contact with the second valve seat portion at the time of separating the second body, Further comprising a second spring for providing an elastic force so as to advance and return the second shaft valve forward,
Wherein the second valve body is fixedly provided in the second valve chamber on the rear side of the second shaft valve and is provided with a through hole penetrating the rear shaft of the second shaft valve to guide the retraction and advancement of the second shaft valve Further comprising: a second valve support portion having a first guide hole and a second guide hole and forming a flow path opened around the second guide hole.
In claim 6,
Wherein the second shaft valve has a second shaft portion protruding forward and rearward and a front portion contacting a distal end of the first valve body when the second body is engaged and a rear portion passing through the second guide hole, And a second valve portion protruding from the periphery of the shaft portion in a disk shape and being in close contact with and detached from the second valve seat portion to block and open the flow passage,
Wherein the second valve portion includes a fourth ring groove formed at an edge portion thereof and a fourth sealing ring provided in the fourth ring groove and being in close contact with and detached from the second valve seat portion,
Wherein the first valve body includes a first valve body portion and a first valve support portion that supports the first valve body portion and is fixed to the first valve chamber,
The first valve body includes a rear protrusion for pushing the front of the second shaft when the second body is engaged, a first coupling part coupled to the first valve support at the front end, and a second coupling part protruding from the periphery, And a first valve portion which is in close contact with and detached from the periphery,
Wherein the first valve portion includes a third ring groove formed in a protruding portion and a third sealing ring provided in the third ring groove and closely in contact with and detached from the periphery of the first valve hole,
Wherein the first fastening portion is bolted to the second fastening portion formed on the first valve supporting portion.
In claim 7,
Wherein the second valve chamber has a second valve hole formed by an end of the second valve seat portion protruding from an inner peripheral surface of the second valve seat and passing through the second shaft valve, Has a protrusion protruding rearward, opposite to a direction of engagement with the first body, to which the fourth sealing ring is seated,
Wherein the second valve portion further comprises a disc-shaped second plate portion and a cover portion which fixes the fourth sealing ring to the fourth ring groove, and the fourth ring groove is formed in a direction of engagement of the second plate portion with the first body The fourth sealing ring is formed in a peripheral portion of the side front face, the fourth sealing ring is a disc-
Wherein the first valve supporting portion is formed with a radial projection on the front side and is screwed to the inner circumferential surface of the first valve chamber, the second coupling portion is a groove opened rearward,
Wherein the first valve seat protrudes inward and protrudes rearward in a direction in which the second body is engaged with the periphery of the first valve hole forming the first valve hole so as to be seated on the third sealing ring,
Wherein the first valve body is a first shaft valve having the same structure as that of the second shaft valve, and the rearward protruding portion and the first fastening portion form a protruding front portion to form a first shaft portion of the first shaft valve, The first valve portion is formed by protruding in a disk shape around the first shaft portion, the first valve portion further includes a first plate portion in a disk shape and a cover portion for fixing the third sealing ring to the third ring groove And the third ring groove is formed at an edge portion of the front surface of the first plate portion, and the third sealing ring is a disk-annular sealing ring.
The method according to any one of claims 1, 3, 4, and 5,
Further comprising a service port formed around the first body and communicating with the first valve chamber.
The method according to any one of claims 1, 3, 4, and 5,
Further comprising a pipe connector coupled to at least one of a front side of the first body and a rear side of the second body.
An air conditioner connected to a first heat exchanger and a second heat exchanger by a connection pipe so as to perform a refrigerant circulation,
A residual pressure removing pipe connecting device according to any one of claims 1, 3, 4 and 5 is installed in the connecting pipe, and the first and second heat exchanging devices are separated from each other by separation of the residual pressure removing pipe connecting device And the air conditioning apparatus is capable of operating the air conditioner.
KR1020160087565A 2016-07-11 2016-07-11 Pipe connecting apparatus capable of removing residual pressure and air conditioner KR101878041B1 (en)

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PCT/KR2017/000924 WO2018012698A1 (en) 2016-07-11 2017-01-25 Residual pressure removing type pipe connecting device and air conditioning appliance

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