WO2018012698A1 - Residual pressure removing type pipe connecting device and air conditioning appliance - Google Patents

Abstract

The present invention relates to a residual pressure removing type pipe connecting device and an air conditioning appliance comprising the same. A residual pressure removing type pipe connecting device according to an example comprises: a first body having a first valve chamber formed therein; a first valve body installed in the first valve chamber; a first valve seat having a first valve hole provided therein such that the first valve body penetrates the same, the first valve seat making a sliding movement inside the first valve chamber and thereby exposing/blocking the first valve hole; a second body having a second valve chamber formed therein, the second valve chamber having a second valve seat portion provided thereon, the second body being inserted into the first valve chamber in a separable manner and coupled behind the first body, and the second body pushing the first valve seat, when coupled, thereby exposing the first valve hole; a second valve body that comprises a second shaft valve and is installed in the second valve chamber such that, when the first and second bodies are coupled, the second shaft valve is pushed backward by the first valve body, thereby exposing a channel of the second valve body, and, when the second body is separated, the second shaft valve moves forward and blocks the channel; and a connection retainer having one end fitted to the periphery of one of the first and second bodies such that, when the first and second bodies are coupled, the other end of the connection retainer is fastened to the outer peripheral surface of the other, wherein at least one residual pressure removing hole is provided on the periphery of the second body so as to communicate with the second valve chamber, and at least one residual pressure removing groove is formed on the inner peripheral surface of the connection retainer.

Description

Residual Pressure Eliminating Pipe Connecting Device and Air Conditioning Equipment

The present invention relates to piping connection devices and air conditioning equipment. Specifically, the present invention relates to a residual pressure removing type pipe connecting device capable of safely and easily separating a connecting pipe, and an air conditioning device having a connecting pipe using the same.

In general, the valve is used to block the flow of the fluid, such as gas or liquid, or to flow the fluid. Piping applications include air conditioning, heating and cooling, water supply and drainage, ventilation / ventilation, and city gas. When installing pipes, it is sometimes necessary to connect two or more pipes due to the type of installation site, length of pipe, disassembly and assembly. In this case, there are flange joints, fitting joints, threaded joints, welding joints, adhesive joints, and the like for connecting pipes. Is being used.

This quick connector is used when the separation of the pipe is required, at this time, it is necessary to minimize the leakage of fluid flowing through the pipe. In addition, it should be possible to simply detach and combine while minimizing the leakage of fluid during separation.

When separating a flow pipe, the fluid flowing inside the pipe or remaining fluid is discharged to the outside of the pipe. However, in the case of separating the connecting pipes, it is often necessary to minimize the loss of losses due to the leakage of fluid inside the pipes and to remove the material without substantial loss of consumption. For example, in the case of an air conditioner such as an air conditioner or a refrigerating device, for example, it may be necessary to separate the connection pipes between the heat exchangers. For example, it may be necessary to separate the connection pipe between the air conditioner main body and the air conditioner outdoor unit of an air conditioner such as an air conditioner for repair or moving. In general, when the connection pipe between the air conditioner main unit and the air conditioner outdoor unit is disconnected, almost all of the circulating refrigerant in the pipe may leak and there is a difficulty in reconnecting it. That is, disconnection or connection is not easy. In addition, there is a risk that the pipe which is separated by the pressure of the fluid remaining in the pipe is momentarily bounced off when the connection pipe is separated.

In addition to the air conditioner and the freezer, in other cases, the flow path of the fluid may need to be disconnected and separated. At this time, there is a need for a safe and simple separation of the pipe flowing fluid and if necessary to reconnect.

However, the high flow pressure of the fluid is formed in the pipe through which the fluid flowed. Even though both sides of the pipe to be separated are separated and the fluid is separated without substantial leakage, one side of the pipe is separated by the residual pressure remaining when the pipe is separated. There is a risk of going out.

In order to solve the above problems, the present invention is to propose a residual pressure relief pipe connecting device that can be safely and easily separated by preventing the one side separated by the residual pressure when the pipe is separated.

In order to solve the above-described problem, according to one aspect of the present invention, the first body is formed with a first valve chamber therein; A first valve body installed and supported in the first valve chamber; A first valve hole through which the first valve body penetrates and is elastically supported in the first valve chamber, and is slidably moved, wherein a circumference of the first valve hole is detached from the first valve body according to the sliding movement, and the first valve hole is opened and closed A first valve seat; A second valve chamber having a second valve seat portion protruding from the inner circumferential surface thereof is formed therein, and a front portion is detachably inserted into the first valve chamber and engaged at the rear of the first body, and when coupled, the first valve seat is moved forward. A second body which opens to open the first valve hole; It includes a second shaft valve and is installed in the second valve chamber, when the second shaft valve is pushed backward by the end of the first valve body when engaged with the first body of the second body is separated from the second valve seat portion A second valve body which opens the flow path of the two valve chambers and moves the second shaft valve forward by an elastic force when the second body is separated, and is seated on the second valve seat to block the flow path; And a connecting fixture whose one end is fitted around one of the first and second bodies and the other end is nut-fastened to the outer peripheral surface of the other of the first and second bodies when the second body is coupled into the first valve chamber. Residual pressure removing type, characterized in that it comprises a, at least one residual pressure removing hole in communication with the second valve chamber around the front of the second body and at least one residual pressure removing groove formed on the inner peripheral surface of the other end of the connecting fixture A piping connecting device is proposed.

At this time, in one example, the fluid in the second valve chamber as the residual pressure relief hole, the circumference of the front portion of the second body and the first valve in accordance with the partial retraction of the second body from the first valve chamber when the nut connection portion of the connecting fixture is released It 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 elastic force when the second body is separated, and upon return, the periphery of the first valve hole is in close contact with the first valve body and the first valve hole is closed, and the second shaft The valve returns to the front by the elastic force when the second body is separated, and when the valve is returned, the valve is in close contact with the second valve seat and closes 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 peripheral surface of the coupling side with the second body, the first sealing ring for sealing between the inner peripheral surface of the first valve chamber and the outer peripheral surface of the second body It is provided in the first ring groove, the residual pressure removing hole is disposed in front of the portion that is in close contact by the first sealing ring when the second body is the maximum coupling, and the second from the first valve chamber according to the partial loosening of the nut fastening portion of the connecting fixture According to the partial retreat of the body, it is disposed behind the portion that is in close contact with the first sealing ring and discharges the fluid in the second valve chamber to a gap between the inner circumferential surface of the first valve chamber and the outer circumferential surface of the front portion of the second body.

At this time, in another example, the first valve chamber further includes a second ring groove formed on the inner circumferential surface of the sliding section of the first valve seat, and the second valve seal sealing between the inner circumferential surface of the first valve chamber and the outer circumferential surface of the first valve seat. The sealing ring is provided in the second ring groove.

Further, in one example, the residual pressure eliminating pipe connecting device is installed in the first valve chamber so that one end is supported, the other end elastically supports the first valve seat, and the periphery of the first valve hole when the second body is separated. A first spring providing an elastic force to be in close contact with the first valve body and slidingly returning the first valve seat; And is installed in the second valve chamber so that one end is supported and the other end elastically supports the second shaft valve at the rear side, and when the second body is separated, the second shaft valve is provided to be in close contact with the second valve seat. The second shaft valve may further include a second spring for advancing and returning forward. Further, the second valve body is installed in the second valve chamber to be fixed to the rear side of the second shaft valve, and the second guide hole penetrates the rear shaft of the second shaft valve to guide the retraction and the forward of the second shaft valve. It may further include a second valve support portion having a flow path formed around the second guide hole.

At this time, in another example, the second shaft valve is protruding forward and rearward, the front is in contact with the end of the first valve body when the second body is coupled to the second shaft portion penetrating the second guide hole And a second valve portion protruding in a disc shape around the second shaft portion to be in close contact with and detachable from the second valve seat portion and blocking and opening the flow path, wherein the second valve portion is provided with a fourth ring groove and a fourth portion formed at an edge portion thereof. It may be provided in the ring groove may be provided with a fourth sealing ring in close contact with and detachable from the second valve seat portion. In addition, the first valve body includes a first valve support portion which supports the first valve body portion and the first valve body portion and is fixedly installed in the first valve chamber, wherein the first valve body portion has a second shaft when the second body is coupled. A rearward protrusion for pushing the front of the portion, a first fastening portion coupled to the first valve support portion at the front end, and a first valve portion protruding from the periphery to be in close contact with and detachable from the periphery of the first valve hole; And a third sealing ring formed in the third ring groove and the third ring groove to be in close contact with the periphery of the first valve hole, and the first fastening part may be bolted to the second fastening part formed on the first valve support part. have.

Furthermore, at this time, in another example, the second valve chamber includes a second valve hole formed by an end of the second valve seat portion protruding from the inner circumferential surface and penetrating the second shaft valve, 2 The end portion of the valve seat portion has a protrusion projecting rearwardly opposite to the engagement direction with the first body to seat the fourth sealing ring, and the second valve portion includes a second plate portion and a fourth sealing ring in a disk shape. A cover portion is further provided to fix the fourth ring groove, and the fourth ring groove is formed at an edge portion of the front surface side of the second plate portion in the engagement direction with the first body, and the fourth sealing ring may be a disc annular sealing ring. In addition, the first valve support portion is provided 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 open to the rear, and the first valve seat protrudes inwardly to close the first valve hole. The periphery of the first valve hole to be formed is projected to the rear in the direction in which the second body is coupled to be seated on the third sealing ring, the first valve body is a first shaft valve having the same structure as the second shaft valve, and the rear protrusion The first fastening part and the protruding front part form a first shaft part of the first shaft valve, and the first valve part is formed to protrude in a disc shape around the first shaft part, and the first valve part is a disc shaped first plate. A cover portion for fixing the third and third sealing rings to the third ring groove is further provided, wherein the third ring groove is 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 and in communication with the first valve chamber. In another example, the residual pressure relief piping connecting device may further include a tubular connector coupled to at least one of the front side of the first body and the rear side of the second body.

Next, in order to solve the above problem, according to another aspect of the present invention, in the air conditioning equipment connected by the connecting pipe so that the refrigerant circulation between the first and second heat exchanger, the invention described above in the connecting pipe An air conditioner is proposed, in which a residual pressure eliminating pipe connecting device according to one example of the present invention is installed and separation of the first and second heat exchangers by separating the residual pressure eliminating pipe connecting device can be performed.

Figure 1 is a schematic cross-sectional view showing a coupling state of the residual pressure relief pipe connecting device according to an embodiment of the present invention. 2A and 2B are cross-sectional views schematically illustrating a partially separated state of the residual pressure eliminating pipe connecting device according to one embodiment of the present invention, respectively. 3 is a cross-sectional view schematically showing a completely separated state of the residual pressure removing pipe connecting device according to FIG. Figure 4a is a perspective view schematically showing the external appearance of the separated pressure relief pipe connecting device according to an embodiment of the present invention. 4B to 4C are perspective views schematically illustrating the external shape of the residual pressure eliminating pipe connecting device according to the exemplary embodiment of the present invention, respectively. FIG. 5 is a view schematically illustrating a second body of the residual pressure eliminating pipe connecting device according to an example of the present disclosure. 6 is a view schematically showing a connection fixture of the residual pressure relief pipe connecting apparatus according to an example of the present invention.

According to one embodiment of the present invention, the residual pressure eliminating pipe connecting device includes a first body 10, a first valve body 30, a first valve seat 50, a second body 20, and a second valve body ( 40 and a connecting fixture 70. The first body 10 is formed with a first valve chamber 10a therein. The 1st valve body 30 is installed in the 1st valve chamber 10a, and is supported. The first valve seat 50 has a first valve hole 51 through which the first valve body 30 passes, and is elastically supported in the first valve chamber 10a and slides. In accordance with the sliding movement of the first valve seat 50, the periphery of the first valve hole 51 is detached from the first valve body 30, 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 an 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 behind the first body 10. When the second body 20 is coupled to 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 a second shaft valve 41. When the second body 20 is engaged with the first body 10, the second shaft valve 41 of the second valve body 40 is pushed backward by the end of the first valve body 30 and the second valve The flow path of the second valve chamber 20a is opened apart 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 moved forward by the elastic force, and the second valve seat 21 It rests and blocks the flow path. In addition, one end 70a of the connection fixture 70 is inserted into and supported around one of the first and second bodies 10 and 20. The connecting fixture 70 has a second end coupled 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.

At this time, 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. In addition, at least one residual pressure removing groove 73 is formed on the inner circumferential surface of the other end of the connecting fixture 70.

Embodiments of the present invention for achieving the above object will be described with reference to the accompanying drawings. In the present description, the same reference numerals refer to the same configuration, and additional descriptions may be omitted for the purpose of understanding the present invention to those skilled in the art. In the present specification, when one component is connected, coupled or disposed with another component, unless otherwise described as 'directly', 'directly connected, coupled or arranged' as well as another between them Intervening components may also exist in the form of being connected, coupled or arranged. In addition, where terms are described herein as terms indicating direction and / or location, such terms are relative concepts defined from a reference, where the reference indicates a direction and / or location even if described directly or not directly herein. It can be fully understood from the relationship between the configuration and the related configuration. It should be noted that, although a singular expression is described herein, it can be used as a concept representing a plurality of configurations as long as they are not contrary to the concept of the invention, or obviously different or contradictory. It is to be understood that the description of 'comprising', 'having', 'comprising', 'comprising', etc., in this specification includes the possibility of the presence or addition of one or more other components or combinations thereof. The drawings referred to herein are examples for describing embodiments of the present invention, and shapes, sizes, thicknesses, and the like may be exaggerated for the purpose of describing technical features.

[Residual Pressure Relief Pipe Connecting Device]

The residual pressure removing pipe connecting device according to one aspect of the present invention will be described in detail with reference to the accompanying drawings. In this case, reference numerals not described in the accompanying drawings may be reference numerals in other drawings showing the same configuration. In this case, it should be noted that the components disclosed in the drawings may be partially omitted or modified according to variations of the embodiments.

1 to 4C, the residual pressure eliminating pipe connecting device according to one example includes a first body 10, a first valve body 30, a first valve seat 50, a second body 20, The second valve body 40 and the connecting fixture 70 are included.

The first body 10 is formed with a first valve chamber 10a therein. The 1st valve body 30 is installed in the 1st valve chamber 10a, and is supported. The first valve seat 50 is elastically supported in the first valve chamber 10a and slides. At this time, the first valve seat 50 includes a first valve hole 51 through which the first valve body 30 passes. In accordance with the sliding movement of the first valve seat 50, the periphery of the first valve hole 51 is detached from the first valve body 30, 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 an 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 behind the first body 10. When the second body 20 is coupled to 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 a second shaft valve 41. When the second body 20 is engaged with the first body 10, the second shaft valve 41 of the second valve body 40 is pushed backward by the end of the first valve body 30 and the second valve The flow path of the second valve chamber 20a is opened apart from the seat portion 21. In addition, when the second body 20 is separated from the first body 10, the second shaft valve 41 of the second valve body 40 is moved forward by the elastic force and the second valve seat part 21 is removed. It is seated at and blocks the flow path. In addition, one end 70a of the connection fixture 70 is inserted into and supported around one of the first and second bodies 10 and 20. The connecting fixture 70 has a second end coupled 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.

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. 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. In this case, 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. Separation can be made safe by removing the residual pressure in the space.

For example, FIGS. 2A and 2B show the nut-fastening part loosened state of the connecting fixture 70. 2A illustrates a state in which the residual pressure elimination hole 23 does not cross the first sealing ring 12a and thus the sealing is maintained as the partial retreat of the second body 20 from the first valve chamber 10a. 2b shows that the fluid in the second valve chamber 20a flows around the front portion of the second body 20 through the residual pressure elimination hole 23 as the residual pressure elimination hole 23 is retracted beyond the first sealing ring 12a. The state which can escape between the inner peripheral surfaces of the 1st valve chamber 10a is shown. Referring to FIG. 2B, the fluid in the second valve chamber 20a flows in the residual pressure relief hole when the nut connection portion of the connection fixture 70 is released, as the partial body of the second body 20 is retracted from the first valve chamber 10a. 23) is discharged along the gap between the front circumference of the second body 20 and the inner circumferential surface of the first valve chamber 10a and the residual pressure relief groove 73, and the second valve chamber 20a, specifically, The residual pressure in some spaces to be separated can be eliminated.

1 and 3, in another example, the residual pressure relief piping connecting device may further include a first spring 60a and a second spring 60b. In addition, referring to FIGS. 1 to 3, in another example, the residual pressure eliminating pipe connecting device may further include a pipe connector 80.

Hereinafter, each component will be described in detail.

First and second bodies 10, 20

First, the first and second bodies 10 and 20 of the residual pressure eliminating pipe connecting device will be described.

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 the portion of the second body 20 is inserted into the interior of the first body 10, the connecting fixture supported on the outer peripheral surface of any one of the first body 10 and the second body 20 An insertion coupling into the interior of the first body 10 can be fixed and supported by screwing with the remaining outer circumferential surface by 70. The first body 10 and the second body 20 may be made of the same material, but is 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 chamber 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 fixedly installed in the first valve chamber 10a, and the first valve seat 50 may be slidably moved in the first valve chamber 10a. The 1st valve body 30 and the 1st valve seat 50 are mentioned later.

The second body 20 is inserted and coupled to the first valve chamber 10a of the first body 10. The second body 20 may be separated from the first valve chamber 10a of the first body 10. For example, the front portion of the second body 20 is detachably inserted into the first valve chamber 10a and the second body 20 is coupled behind 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 circumferential surface of the second valve chamber 20a is provided. The second shaft valve 41 of the second valve body 40, which will be described later, is seated and detached 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 part 411 of the second shaft valve 41 is the second valve seat part 21. In this case, the flow path of the second valve chamber 20a is blocked, and when the second body 20 is coupled to the first valve chamber 10a, the second valve portion 411 of the second shaft valve 41 is closed. The flow path of the second valve chamber 20a is opened from the second valve seat portion 21 at this time. When the second body 20 is engaged with the first body 10, that is, inserted into the first valve chamber 10a, the second body 20 pushes the first valve seat 50 forward to move the first valve. 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 may remove the residual pressure of the separated space 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 residual pressure removing hole 23 is not provided as in the present invention, the second valve chamber 20a and the first valve chamber 10a may be separated when the second body 20 is separated from the first body 10. The pressure of the fluid remaining in the space of separation, i.e., the residual pressure, can be thrown out as if it exploded, causing a safety problem. At this time, the residual pressure removing hole 23 is the second body by allowing the fluid in the second valve chamber 20a to escape to the outside together with the residual pressure removing groove 73 formed on the inner peripheral surface of the other end of the connecting fixture 70 which will be described later (20) Make it safe and easy to remove.

For example, in FIGS. 1, 2A, 2B, 3, and / or 5, the residual pressure removing hole 23 is illustrated as a hole penetrating around the front portion of the second body 20, but is not shown, but is illustrated according to an embodiment. Unlike this, the groove is formed in a groove structure extending from the front end of the second body 20 to the rear side, but may be formed such that the outer periphery of the front portion of the second body 20 and the second valve chamber 20a communicate with each other.

Also, referring to FIGS. 1 to 4C, a connection fixture 70 having one end supported around one of the first body 10 and the second body 20 may be provided. 1 to 4C, one end of the connecting fixture 70 is shown around the second body 20 at the time of separation. However, one end of the connecting fixture 70 is formed around the first body 10. It may be supported. When the second body 20 is coupled, the other end of the connecting fixture 70 is nut-coupled around the outer circumferential surface of the other of the first body 10 and the second body 20, and the first body 10 and the second body are coupled to each other. The coupling of the body 20 can be fixed.

In the present specification, the rear of the first body 10, the first valve body 30, and the first valve seat 50 means a side to which the second body 20 is coupled, and the front means an opposite side. Interpreted In addition, the front of the second body 20 and the second valve body 40 means the side where the second body 20 is coupled to the first body 10, the rear is interpreted to mean the opposite side. .

Next, 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 communicate with each other by inserting into the first valve chamber 10a of the second body 20 to form a flow path. At this time, the first valve chamber 10a and the inserted second body 20 are sealed between the first valve chamber 10a and the inserted second body 20 so that the fluid flowing through the communication passage between the first valve chamber 10a and the second valve chamber 20a does not leak. .

1 to 3, in one example, the first valve chamber 10a may include a first ring groove 11a formed on an inner circumferential surface of the engagement side with the second body 20. The first sealing ring 12a is provided in the first ring groove 11a. The first sealing ring 12a seals between the inner circumferential surface of the first valve chamber 10a and the outer circumferential surface of the second body 20. For example, the first sealing ring 12a may be an elastic O-ring, for example, a rubber O-ring. The first sealing ring 12a may 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 and coupled to the first body 10.

At this time, referring to Figure 1, when the maximum coupling of the second body 20, the residual pressure removing hole 23 formed around the front portion of the second body 20 is a portion that is in close contact by the first sealing ring (12a) It is disposed more forward. In addition, referring to FIG. 2B, the residual pressure removing hole 23 is used to partially retract the second body 20 from the first valve chamber 10a according to the partial loosening of the nut-fastening portion of the connecting fixture 70 which will be described later. Therefore, it is arrange | positioned behind rather than the site | part in close contact by the 1st sealing ring 12a. In this case, referring to FIG. 2B, the fluid in the second valve chamber 20a is disposed in the rear of the first valve chamber 10a as the residual pressure elimination hole 23 is disposed behind the contact portion of the first sealing ring 12a. It may be discharged into a gap between the inner circumferential surface of the front and the outer peripheral surface of the front portion of the second body (20).

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 may have a second body 20. ) Is sealed between the outer circumferential surface of the second body 20 and the inner circumferential surface of the first valve chamber 10a at the time of insertion coupling, and the outer circumferential surface of the first valve seat 50 and the first valve chamber when the second body 20 is separated. (10a) It can seal between inner peripheral surfaces. Although not shown, in this case, the residual pressure removing hole 23 is disposed in front of the portion that is in close contact by the first sealing ring 12a at the time of maximum engagement of the second body 20, and According to the partial retreat, it is disposed behind the portion that is in close contact with the first sealing ring 12a. In this case, the residual pressure removing hole 23 may be formed near the front end of the second body 20.

1 to 3, the first valve chamber 10a may further include a second ring groove 11b on an 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. The second ring groove 11b is provided with a second sealing ring 12b. 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.

At this time, referring to FIG. 2A, the other end of the first valve body 30 and the one end of the second shaft valve 41 are dropped while the first and second bodies 10 and 20 are separated. When the flow paths of the seals 10a and 20a are respectively blocked, 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 and the second sealing ring ( 12b) seals 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 all individually blocked before the first body 10 and the second body 20 are completely separated, the fluid, for example, gas Alternatively, leakage of the refrigerant may be minimized. Accordingly, the leakage of fluid in the pipe is minimized so that the pipe can be separated without substantial fluid loss (leak). At this time, when continuing to remove, referring to Figure 2b, before the complete separation of the first body 10 and the second body 20, the residual pressure removing hole 23 is the first sealing according to the partial retreat of the second body (20) It is disposed behind the portion that is in close contact by the ring 12a, so that the fluid in the second valve chamber 20a is a 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. May be discharged.

1 to 3, the second valve chamber 20a will be described in more detail. In one example, the second valve hole 20a is formed by the end of the second valve seat portion 21 protruding from the inner circumferential surface. The second valve hole 21a provided in the second valve chamber 20a penetrates through the second shaft valve 41 described later. In this case, an end portion of the second valve seat portion 21 around the second valve hole 21a may include a protrusion 211 protruding rearwardly opposite to the coupling direction with the first body 10. At this time, the protrusion 211 of the second valve seat portion 21 is a portion on which the second shaft valve 41 is seated. The second valve portion 411 of the second shaft valve 41, for example, the fourth sealing ring 411c, which is described later, may be in close contact with the protrusion 21a, and a flow path of the second valve chamber 20a may be blocked.

Subsequently, the structures of the first valve chamber 10a and the second valve chamber 20a will be described in more detail. 1 to 3, in one example, a first step 13a for supporting the front end of the first valve body 30 to be described later is formed on the front side of the inner circumferential surface of the first valve chamber 10a. Can be. In this case, the first step 13a may be formed by the pipe connecting part 17 formed on the front side of the first body 10 as shown in FIGS. 1 to 3, or may be separately formed. . 1 to 3, for example, a third step 13b for supporting one end of the first spring 60a to be described later may be provided on the inner circumferential surface of the first valve chamber 10a. 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.

In addition, referring to FIGS. 1 to 3, in one example, a second step 22 may be further formed on the inner circumferential surface of the second valve chamber 20a to support the second valve support part 43 described later.

For example, referring to FIGS. 1 to 4C, the first body 10 may have a tube connecting portion 17 formed at a front side thereof, that is, at an 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, unlike in FIGS. 1 to 4C. 1 to 4C, the pipe connecting part 17 may be implemented in various shapes as a part connecting pipes.

Continuing with reference to FIGS. 1-4C, in one example, the first body 10 may further include a service port 15 formed around and in communication with the first valve chamber 10a. Through the service port 15, the fluid, for example, the refrigerant, may be replenished to the first valve chamber 10a or the fluid may be withdrawn from the first valve chamber 10a. The other side of the service port 15 may be closed by a plug (not shown). For example, the service port 15 may be formed to communicate with the third step 13b forming portion.

First valve body 30 and second valve body 40

Next, the 1st valve body 30 and the 2nd valve body 40 are examined. The first valve body 30 is installed and supported in the first valve chamber 10a, and the second valve body 40 is installed in the second valve chamber 20a.

1 to 3, the first valve body 30 penetrates through the first valve hole 51 of the first valve seat 50 described later. One end of the first valve body 30, for example, may be installed to be fixed to the first valve chamber 10a. For example, one end of the first valve body 30 is fixedly supported by the first step 13a of the first valve chamber 10a and may be 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 described later.

For example, the fixed installation of the first valve body 30 into the first valve chamber 10a is provided with a pipe connecting portion 17 formed integrally with the first body 10 as shown in FIGS. 1 to 3. In this case, although not shown or inserted into the first valve chamber 10a through the rear side of the first body 10, the front portion of the first body 10 is not the rear portion of the second body 20 of FIGS. 1 to 3. When formed in the same or similar structure, the first valve support part 33 of the first valve body 30 may be inserted into and installed into the first valve chamber 10a through the front side of the first body 10. The fixed installation of the second valve body 40 into the second valve chamber 20a may be inserted through the rear side of the second body 20 as shown in FIGS. 1 to 3.

1 to 3, the second valve body 40 includes a second shaft valve 41. When the second body 20 is engaged with the first body 10, the second shaft valve 41 of the second valve body 40 is pushed backward by the end of the first valve body 30. At this time, the second shaft valve 41 is separated from the second valve seat portion 21 to open the flow path of the second valve chamber 20a. In addition, when the second body 20 is separated from the first body 10, the second shaft valve 41 of the second valve body 40 is moved forward by the elastic force and the second valve seat part 21 is removed. It is seated at and blocks the flow path. In one example, the second shaft valve 41 is returned to the front by the elastic force at the time of separation of the second body 20, for example, the elastic force of the second spring 60b to be described later, the second valve seat portion ( 21 and closes the flow path of the second valve chamber 20a. That is, the second shaft valve 41 blocks the flow path of the second valve chamber 20a when the second shaft valve 41 is separated from the first valve chamber 10a of the second body 20 and the first valve of the second body 20. When inserting into the chamber 10a, the flow path of the second valve chamber 20a is opened.

For example, in one example, the second valve body 40 may further include a second valve support 43 in addition to the second shaft valve 41. In this case, the second valve support part 43 may be provided to be fixed in the second valve chamber 20a and include a second guide hole 43a for guiding the retraction and the forward 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.

With reference to FIGS. 1-3, the 2nd valve body 40 is looked at 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 protrudes forward and backward. The front of the second shaft portion 413 is in contact with the end of the first valve body 30 when engaging the first body 10 of the second body 20. At this time, the front of the second shaft portion 413 passes through the second valve hole 21a formed by the second valve seat portion 21 to be in contact with the end portion of the first valve body 30. The rear of the second shaft portion 413 penetrates through the second guide hole 43a of the second valve support 43. At this time, the front and rear movement of the second shaft valve 41 is guided by the second guide hole 43a.

The second valve portion 411 protrudes in a disk shape around the second shaft portion 413. At this time, the second valve part 411 is in close contact with and detachable from the second valve seat part 21 to block and open the flow path. That is, referring to Figure 2a or / and 2b, the second shaft valve 41 is burned from the rear side of the second valve portion 411 when detached from the first valve chamber 10a of the second body 20. It is sexually supported and is seated in the second valve seat portion 21 of the second valve chamber 20a to block 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 part 411 is seated on the second valve seat part 21 by the elastic force of the second spring 60b which will be described later. Can be. Referring to FIG. 1, the second shaft valve 41 is pushed backward by the other end of the first valve body 30 when the second body 20 is inserted and coupled, and the second valve portion 411 is moved to the second valve. The flow path of the second valve chamber 20a is opened while being separated from the seat portion 21.

The second valve part 411 may include a fourth ring groove 411b and a fourth sealing ring 411c in order to block and open the flow path through close contact with and detachable from the second valve seat part 21. The fourth ring groove 411b is formed at an edge portion of the second valve portion 411. The fourth sealing ring 411c is installed in the fourth ring groove 411b to be in close contact with and detachable from the second valve seat 21. For example, the fourth sealing ring 411c is in close contact with the protrusion 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 part 411 may further include a second plate part 411a and a cover part 411d. The second plate portion 411a protrudes in a disc shape 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 may prevent the fourth sealing ring 411c from falling from the fourth ring groove 411b. The cover portion 411d is provided on the front side of the second plate portion 411a and covers the fourth sealing ring 411c to partially expose the fourth sealing ring 411c. The exposed fourth sealing ring 411c becomes a portion to be seated on the second valve seat portion 21. 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 engagement direction with the first body 10. The fourth sealing ring 411c may be a disc annular sealing ring.

Next, the second valve support portion 43 of the second valve body 40 will be described in detail. 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 fixed to the rear side of the second shaft valve 41 in the second valve chamber 20a. The second valve support 43 has a second guide hole 43a. The second guide hole 43a penetrates the rear shaft of the second shaft valve 41, that is, the rear of the second shaft portion 413, to guide the retraction and the forward of the second shaft valve 41. The second valve support portion 43 also forms an open flow path, ie at least one flow path hole 43b, around the second guide hole 43a. For example, the one or more flow path holes 43b may be disposed radially around the second guide hole 43a. For example, as shown in FIGS. 1 to 3, the second valve support part 43 includes a protrusion into which the second spring 60b to be described later is fitted, and a second guide hole 43a is formed in the protrusion, or is not shown. The second guide hole 43a and the passage hole 43b may be formed in a plate shape without a protrusion.

For example, in one example, the second valve support 43 is supported by the second step 22 formed on the inner circumferential surface of the second valve chamber 20a and may support the other end of the second spring 60b to be described later. . The second valve support part 43 may be supported on one surface side, for example, a surface side for supporting the second spring 60b on the second step 22. At this time, as shown in FIGS. 1 to 3, the other surface side of the second valve support part 43 is supported or not shown by the snap ring 47, but the tubular connector 80, which will be described later, is not shown in FIG. 1 to 3. When inserted into the rear of the valve chamber 20a, it may be supported by the end of the tube connector.

With reference to FIGS. 1-3, the 1st valve body 30 is looked at 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 portion 31 penetrates through the first valve hole 51 of the first valve seat 50 to be described later, and the first valve support portion 33 supports the first valve body portion 31. And may be fixed to the first valve chamber 10a. The first valve body 30 or the first valve body portion 31 of the first valve body 30 may be made of stainless steel, but is not limited thereto.

For example, referring to FIGS. 1 to 4A, the first valve body portion 31 may include a rear protrusion 313b, a first fastening portion 313a, and a first valve portion 311. The rear protrusion 313b pushes the front end of the second shaft valve 41, for example, the front end of the second shaft 413, when the second body 20 is engaged. That is, in the first valve body 30, even when the second body 20 is inserted and coupled, the first valve support part 33 is fixed to the first valve chamber 10a, while the second shaft valve 41 is second to the second valve 20. Since the state is elastically supported in the second valve chamber (20a) of the body 20, the rear end of the first valve body portion 31 at the time of insertion coupling of the second body 20 is the second shaft valve 41 The front end of the At this time, the second valve portion 411 of the second shaft valve 41 is pushed into the second valve chamber 20a by pushing the second shaft valve 41 by the rear end of the first valve body portion 31. The flow path of the second valve chamber 20a is opened apart from the formed second valve seat portion 21. On the other hand, the first fastening portion (313a) is a portion formed in the front end of the first valve body portion 31 is coupled to the first valve support portion 33. The first valve portion 311 is formed to protrude around the first valve body portion 31 to be in close contact with and detached from the circumference of the first valve hole 51 of the first valve seat 50 to be described later. In this case, the first valve part 311 may include a third ring groove 311b and a third sealing ring 311c. The third ring groove 311b is formed at the protruding portion protruding from the circumference of the first valve body portion 31. The third sealing ring 311c is installed in the third ring groove 311b to be in close contact with and detached from the circumference of the first valve hole 51. When the second body 20 is separated from the first valve chamber 10a, the first valve seat 50 may be connected to the third sealing ring 311c according to the elastic movement of the first valve seat 50 described later. The circumference | surroundings of the 1st valve hole 51 are closely contacted, and the flow path of the 1st valve chamber 10a is interrupted | blocked. Meanwhile, in this case, the first fastening part 313a may be bolted to the second fastening part 33b formed on the first valve support part 33.

For example, referring to FIGS. 1 to 3, in one example, the first valve body 31 may be a first shaft valve 31 having the same structure as the second shaft valve 41. At this time, the rear protrusion 313b and the protrusion 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 forming the first fastening portion 313a. The first valve portion 311 protrudes in a disc shape around the first shaft portion 313. At this time, the first valve portion 311 may further include a cover portion 311d for fixing the disc-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 an 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 on which the first fastening portion 313a is formed.

In addition, although not shown, in some embodiments, the first valve body 31 may have a structure different from that of the second shaft valve 41. For example, the third ring groove of the first valve body portion 31 is formed so that the open portion is radially directed at a portion projecting from the circumference, and the third sealing ring installed in the third ring groove is made of an O-ring made of an elastic material, which will be described later. An end side of the first valve hole 51 of the first valve seat 50 may be in close contact with the third sealing ring and the flow path may be blocked.

The first valve support 33 will be further described with reference to FIGS. 1 to 3. For example, in one example, the first valve support part 33 is formed with a radial protrusion 33a on the front side and screwed to the inner circumferential surface of the first valve chamber 10a. For example, the front radial protrusion 33a of the first valve support part 33 may be supported by the first step 13a of the first valve chamber 10a. In this case, the front radial protrusion 33a of the first valve support part 33 may be screwed onto the inner circumferential surface of the first valve chamber 10a and supported on the first step 13a. The second fastening portion 33b of the first valve support portion 33 is a groove open to the rear, and the first fastening portion 313a of the first valve body portion 31 is screwed to the second fastening portion 33b. Can be.

First valve seat (50)

Next, the first valve seat 50 will be described with reference to FIGS. 1 to 3. The first valve seat 50 is elastically supported in the first valve chamber 10a and slides. At this time, the first valve seat 50 includes 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. In this case, the first valve seat 50 may slide along the circumference of the first valve body 31 of the first valve body 30. That is, the first valve seat 50 slides forward according to the insertion coupling of the second body 20 into the first valve chamber 10a and slides backward by elastic force according to the separation of the second body 20. You can retreat. In accordance with the sliding movement of the first valve seat 50, the periphery of the first valve hole 51 is detached from the first valve body 30, and the first valve hole 51 is opened and closed. The elastic support for the first valve seat 50 may be made, for example, by the first spring 60a described below. 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 an elastic force when the second body 20 is separated, and when the first valve seat 50 is returned, the periphery of the first valve hole 51 is the first valve body 30, for example, the first valve body. The first valve part 311 may be in close contact with the first valve part 311, and the first valve hole 51 may be closed.

The outer circumferential surface of the first valve seat 50 may be installed to be slidably movable in the first valve chamber 10a, and may be installed to maintain a seal with the inner circumferential surface of the first valve chamber 10a. For example, the sealing ring provided in the ring groove of the first valve chamber 10a may be sealed between the inner circumferential surface of the first valve chamber 10a and the outer circumferential surface of the first valve seat 50. 1 to 3, the inner circumferential surface of the first valve chamber 10a and the first valve seat 50 are formed by the second sealing ring 12b provided in the second ring groove 11b of the first valve chamber 10a. It can be sealed between the outer peripheral surface of the. In this case, the second sealing ring 12b is disposed in the sliding range section of the first valve seat 50, thereby allowing the second sealing ring 12b to be disposed during the sliding section of the first valve seat 50 according to the insertion and removal of the second body 20. 1 Between the inner circumferential surface of the valve chamber 10a and the outer circumferential surface of the first valve seat 50 may be sealed.

For example, referring to FIGS. 1 to 3, in one example, the first valve seat 50 forms the first valve hole 51 by a portion projecting inwardly. In this case, a protrusion 511 protruding to the rear, which is a direction in which the second body 20 is coupled, may be formed around the first valve hole 51 protruding inward. At this time, the first valve of the first valve body 30 when the protrusion 511 protruding around the first valve hole 51, that is, the rear side, is separated from the first valve chamber 10a of the second body 20. The body 31 may be seated on the third sealing ring 311c constituting the first valve 311 of the first valve body 31, for example.

In addition, although not shown, in accordance with an embodiment, unlike the illustrated in FIGS. 1 to 3, the first valve seat 50 may have an inclined surface (not shown) such that an inner diameter thereof becomes smaller toward the first valve hole 51. have. At this time, although not shown, the inclined surface or the end portion of the inclined surface is formed in the third ring groove opened in the radial direction around the first valve body 30 at the time of separation from the first valve chamber 10a of the second body 20. The flow path of the first valve hole 51 may be blocked by the third sealing ring.

Connection fixture (70)

Next, the connection fixture 70 will be described. 1 to 4C, one end of the connecting fixture 70 is supported by being fitted around one of the first and second bodies 10 and 20. In addition, the other end of the connecting fixture 70 is nut-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 coupling of the first body 10 and the second body 20 is fixed by the fastening of the connecting fixture 70. The connection fixture 70 may be made of the same material, 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 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 seal 20a can escape to remove the residual pressure in the space to be separated, thereby making the separation safe. For example, the residual pressure removing groove 73 is formed in a portion of the inner circumferential surface thread area coupling section of the connecting fixture 70 that is nut-fastened to the outer peripheral surfaces of the other one of the first and second bodies 10 and 20, thereby connecting the connecting fixture ( After the 70 is partially loosened, the fluid may be effectively discharged through the residual pressure removing groove 73.

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

For example, referring to FIGS. 1, 2A, 2B, 3, and 6, one end of the connecting fixture 70 may be bent in the center direction to be supported around one of the first body 10 and the second body 20. Can be. In addition, the stepped portion 24 may protrude from the outer circumferential surface of any one of the first body 10 and the second body 20 in which the bent portion of the connection fixture 70 is supported. At this time, when fastening the nut with the outer peripheral surface of the other one of the first body 10 and the second body 20, the stepped portion 24 is the first body ( 10) and the other end of the second body 20 is in close contact with the nut fastening range may be limited. When the second body 20 is separated from the fluid discharged through the residual pressure removing hole 23 is passed between the step 24 and the other end of the first body 10 and the second body 20, It may be discharged to the outside through the residual pressure removing groove 73 formed on the inner peripheral surface of the connecting fixture (70).

First spring 60a and second spring 60b

1 to 3, in one example, the residual pressure eliminating pipe connecting device may further include a first spring 60a and a second spring 60b. The first spring 60a is installed in the first valve chamber 10a to support one end thereof. 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 by the third step 13b formed on the inner circumferential surface of the first valve chamber 10a as shown in FIGS. 1 to 3, or the first valve chamber may be not shown. It may be supported on the first valve support part 33 of the first valve body 30 fixedly installed at 10a. The other end of the first spring 60a elastically supports the front end of the first valve seat 50 and may transmit an elastic force to the first valve seat 50 when the second body 20 is separated. Accordingly, the first spring 60a applies an elastic force such that the circumference of the first valve hole 51 closely contacts the first valve body 30 when the second body 20 is separated from the first valve chamber 10a. It can provide a sliding return to the first valve seat 50. That is, when the first spring 60a is inserted into and coupled to the first valve chamber 10a of the second body 20, the first valve seat 50 supported by the first spring 60a is pushed down and contracted to provide elastic force. And the elastic force accumulated in the first spring 60a is provided to the first valve seat 50 when the second body 20 is separated from the first valve chamber 10a. The first valve seat 50 moves along the first valve chamber 10a by the elastic force of the first spring 60a, and accordingly, by the first valve body portion 31 of the first valve body 30. The first valve hole 51 of the first valve seat 50 is sealed and the flow path of the first valve chamber 10a may be blocked.

On the other hand, the second spring 60b is installed in the second valve chamber 20a to support one end thereof. 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 provided around the rear side of the second shaft valve 41, for example, around the rear side of the second valve portion 411. For example, one end of the second spring 60b is supported by the second valve support 43 as shown in FIGS. 1 to 3 or is not shown but is supported by a step formed on the inner circumferential surface of the second valve chamber 20a. May be The other end of the second spring 60b may support the second shaft valve 41 on the rear side, for example, the rear surface of the second valve portion 411. Accordingly, the second spring 60b provides an elastic force so that the second shaft valve 41 comes into close contact with the second valve seat 21 when the second body 20 is removed from the first valve chamber 10a. can do. At this time, the second spring 60b may be brought into close contact with the second valve seat portion 21 by returning the second shaft valve 41 forward. That is, when the second spring 60b is inserted into and coupled to the first valve chamber 10a of the second body 20, the second spring 60b is pushed by the second shaft valve 41 by the rear end of the first valve body 30. It contracts and accumulates elastic force, and provides elastic force to the second valve portion 411 of the second shaft valve 41 when the second body 20 is separated from the first valve chamber 10a. 411 is seated on the second valve seat 21 to be sealed.

Tubular connector (80)

1 to 4C, in another example, the residual pressure eliminating pipe connecting device may further include a pipe connector 80. The tubular 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 tubular connector 80 is coupled to only the rear side of the second body 20, and the first body 10 is illustrated as having a tubular connecting portion 17. Both the first body 10 and the second body 20 may be provided with a tubular connector 80. For example, the tubular connector 80 may be a nipple, union or other tubular seam. The pipe connector 80 may be made of the same material, but is not limited thereto.

When the tubular connector 80 is provided, the tubular connector 80 is removed so that the first valve chamber 10a or the second valve in the separated direction of the first body 10 and / or the second body 20. The 1st valve body 30 and / or the 2nd valve body 40 can be inserted in the chamber 20a. Accordingly, as shown in FIGS. 1 to 3, the second valve body (2) is formed at the front side of the second valve chamber 20 a by the second valve seat portion 21 protruding from the inner circumferential surface of the second valve chamber 20 a. When it is difficult to insert 40, the pipe connector 80 coupled to the rear side of the second body 20 can be removed to insert the second valve body 40 into the second valve chamber 20a.

For example, referring to FIGS. 1 to 3, the tubular connector 80 may be screwed to the outer circumferential surface of the second body 20 or / and the first body 10, or, unlike illustrated, the second body ( It may be inserted and screwed on the inner circumferential surface of the second valve chamber 20a of 20 and / or the first valve chamber 10a of the first body 10. A sealing ring 81b may be provided at a fastening portion between the tubular connector 80 and the second body 20 or / and the first body 10 to seal the coupling gap. For example, the sealing ring 81b is inserted into the ring groove 81a of the tubular connector 80 and can seal the fastening portion between the tubular connector 80 and the second body 20 or / and the first body 10. have.

In some embodiments, both the first body 10 and the second body 20 may be integrally provided with the tube connecting portion 17 shown in FIGS. 1 to 4C without the detachable tube connector 80.

In addition, referring to FIGS. 4B to 4C, a 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 pipe connecting device to the wall or other support. For example, the bracket 90 and a wall or other support may be coupled to each other by bolts or other fastening means to fix and support the residual pressure removing pipe connecting device. For example, the bracket 90 may be provided only at one side of the first body 10 and the second body 20.

Residual pressure relief pipe connecting apparatus according to the present invention may be connected to both sides of the pipe, one side may be connected to the pipe connector (not shown) connected to the pipe is connected to the other side is required for the pipe connection.

[Air conditioning equipment]

Next, look at the air conditioning apparatus according to another aspect of the present invention. The air conditioner is an air conditioner connected by connecting piping to allow circulation between the first and second heat exchangers (not shown). For example, the main body, which is the first heat exchanger, and the responder (outdoor unit), which is the second heat exchanger, may be air conditioners connected by connecting pipes. At this time, one embodiment of the residual pressure removing pipe connecting device according to one aspect of the present invention described above may be installed in the connecting pipe. Accordingly, the connecting pipe is separated by the separation of the residual pressure eliminating pipe connecting device, and the first and second heat exchange devices may be separated.

For example, when the air conditioner main body and the air conditioner outdoor unit are connected to the connecting pipe, and the residual pressure relief type pipe connecting device according to any one of the above-described embodiments is installed in the connecting pipe, the air conditioner main body and the air conditioner outdoor unit are easily removed with little refrigerant loss. It can be separated and recombined later.

In this case, the residual pressure removing pipe connecting device installed in the connecting pipe will be described with reference to the embodiment of the above-described embodiment of the present invention, and a detailed description thereof will be omitted.

According to one embodiment of the present invention, it is possible to prevent the one side separated by the residual pressure when the pipe is separated to bounce off. Moreover, the possibility of damaging a piping component or a user can be prevented beforehand. That is, the pipe can be separated with the residual pressure removed, so that the pipe can be separated safely.

In the foregoing description, the foregoing embodiments and the accompanying drawings are by way of example and not as limiting the scope of the present invention, but have been described by way of example to assist those of ordinary skill in the art. In addition, embodiments according to various combinations of the above configurations may be apparent to those skilled in the art from the foregoing detailed description. Accordingly, various embodiments of the invention may be embodied in a modified form without departing from the essential characteristics thereof, and the scope of the invention should be construed in accordance with the invention set forth in the claims, It includes various modifications, alternatives, and equivalents by those skilled in the art.

The present invention relates to a residual pressure-removable pipe connecting device that can be safely and easily separated by preventing the one side separated by residual pressure from being separated when the pipe is separated, and to an air conditioning device having a connection pipe using the same. It can be widely used.

Claims (11)

A first body in which a first valve chamber is formed; A first valve body installed and supported in the first valve chamber; And a first valve hole through which the first valve body penetrates and is elastically supported in the first valve chamber and slides, wherein a periphery of the first valve hole is detached from the first valve body according to the sliding movement. A first valve seat for opening and closing the valve hole; A second valve chamber having a second valve seat portion protruding from an inner circumferential surface thereof is formed therein, and a front portion is detachably inserted into the first valve chamber and coupled from the rear of the first body, and when coupled, the first valve. A second body for pushing the seat forward to open the first valve hole; A second shaft valve and installed in the second valve chamber, wherein the second shaft valve is pushed backward by the end of the first valve body when the second body is coupled to the first body. A second valve which opens the flow path of the second valve chamber away from the valve seat part and advances the second shaft valve forward by an elastic force when the second body is separated and is seated on the second valve seat part to block the flow path; Valve body; And One end is fitted around the one of the first and second body and the other end when the second body is coupled into the first valve chamber and the nut is fastened to the outer peripheral surface of the other of the first and second body Including a connection fixture, At least one residual pressure removing hole communicating with the second valve chamber is provided around the front portion of the second body, and at least one residual pressure removing groove is formed at an inner circumferential surface of the other end of the connecting fixture. Device. In claim 1, When the nut connection part of the connecting fixture is loosened, the fluid in the second valve chamber is discharged to the residual pressure removing hole, the front part of the second body, and the first valve as the partial retraction of the second body from the first valve chamber. And a residual pressure of the second valve chamber is removed along the gap between the inner circumferential surface of the chamber and the residual pressure removing groove. In claim 1, The first valve seat is returned by an elastic force when the second body is separated, and upon return, the periphery of the first valve hole is in close contact with the first valve body and the first valve hole is closed. The second shaft valve is returned to the front by the elastic force when the separation of the second body, when the return is in close contact with the second valve seat portion and the residual pressure relief pipe, characterized in that to close the flow path of the second valve chamber Connecting device. In claim 3, The first valve chamber has a first ring groove formed on the inner peripheral surface of the coupling side with the second body, The first ring groove is provided in the first ring groove for sealing between the inner circumferential surface of the first valve chamber and the outer circumferential surface of the second body, The residual pressure removing hole is disposed in front of the portion that is in close contact by the first sealing ring when the second body is coupled to the second body, and the second body from the first valve chamber according to the partial loosening of the nut fastening portion of the connection fixture. It is disposed behind the portion that is in close contact with the first sealing ring in accordance with the partial retreat of the to discharge the fluid in the second valve chamber 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 Residual pressure removing pipe connecting device, characterized in that. In claim 4, The first valve chamber further includes a second ring groove formed on the inner circumferential surface of the sliding section of the first valve seat, And a second sealing ring sealing the space between the inner circumferential surface of the first valve chamber and the outer circumferential surface of the first valve seat is provided in the second ring groove. In any one of claims 1 to 5, The residual pressure relief pipe connecting device is: It is installed in the first valve chamber and one end is supported, the other end elastically supports the first valve seat and provides an elastic force so that the periphery of the first valve hole is in close contact with the first valve body when the second body is separated. A first spring for slidingly returning the first valve seat; And Installed in the second valve chamber, one end is supported and the other end elastically supports the second shaft valve from the rear side, and when the second body is separated, the second shaft valve is in close contact with the second valve seat. A second spring providing an elastic force to return the second shaft valve forward; The second valve body is fixed to the rear side of the second shaft valve in the second valve chamber and the first shaft through the rear shaft of the second shaft valve to guide the retreat and forward of the second shaft valve And a second valve support portion having a guide hole and forming an open flow path around the second guide hole. In claim 6, The second shaft valve is protruded forward and rearward, the front is in contact with the end of the first valve body when the second body is coupled to the rear and the second shaft portion and the second penetrating through the second guide hole A second valve portion protruding in a disc shape around the shaft portion to be in close contact with and detachable from the second valve seat portion and to block and open the flow path; The second valve part includes a fourth ring groove formed at an edge portion and a fourth sealing ring installed in the fourth ring groove to be in close contact with and detachable from the second valve seat part; The first valve body includes a first valve body portion and a first valve support portion which is fixed to the first valve chamber and supports the first valve body portion. The first valve body portion is a rear protrusion for pushing the front of the second shaft portion when the second body is coupled, a first fastening portion coupled to the first valve support portion at the front end and protruded from the periphery of the first valve hole A first valve part in close contact with and detachable from the surroundings, The first valve part includes a third ring groove formed in the protruding portion and a third sealing ring installed in the third ring groove to be in close contact with and detachable from the circumference of the first valve hole. And the first fastening part is bolt-nut coupled to a second fastening part formed on the first valve support part. In claim 7, The second valve chamber has a second valve hole formed by an end portion of the second valve seat portion protruding from an inner circumferential surface and penetrating the second shaft valve, and an end portion of the second valve seat portion around the second valve hole. Is provided with a protrusion projecting to the rear opposite to the coupling direction with the first body is seated the fourth sealing ring, The second valve portion further includes a disk-shaped second plate portion and a cover portion for fixing the fourth sealing ring to the fourth ring groove, wherein the fourth ring groove is coupled to the first body of the second plate portion. It is formed in the edge portion of the side front surface, the fourth sealing ring is a disk annular sealing ring, The first valve support portion is a radial projection formed on the front side is screwed to the inner peripheral surface of the first valve chamber, the second fastening portion is a groove open to the rear, The first valve seat is protruded inward to the rear around the first valve hole forming the first valve hole is projected to the rear in the direction in which the second body is coupled to be seated on the third sealing ring, The first valve body portion is a first shaft valve having the same structure as the second shaft valve, the rear protrusion and the first fastening portion to form a protruding front portion forms the first shaft portion of the first shaft valve, The first valve portion is formed to protrude in a disk shape around the first shaft portion, the first valve portion further includes a first plate portion of the 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. In any one of claims 1 to 5, And the first body further includes a service port formed at a circumference thereof to communicate with the first valve chamber. In any one of claims 1 to 5, And a pipe connector coupled to at least one of a front side of the first body and a rear side of the second body. In the air conditioning equipment connected by the connecting pipe so that the refrigerant circulation between the first and second heat exchanger, Residual pressure elimination type pipe connecting device according to any one of claims 1 to 5 is installed in the connecting pipe, characterized in that separation of the first and second heat exchanger by separation of the residual pressure eliminating pipe connecting device can be performed. Air conditioning equipment.

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