KR20100095894A - Structure for connecting refrigerant pipe - Google Patents

Structure for connecting refrigerant pipe Download PDF

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Publication number
KR20100095894A
KR20100095894A KR1020090014925A KR20090014925A KR20100095894A KR 20100095894 A KR20100095894 A KR 20100095894A KR 1020090014925 A KR1020090014925 A KR 1020090014925A KR 20090014925 A KR20090014925 A KR 20090014925A KR 20100095894 A KR20100095894 A KR 20100095894A
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KR
South Korea
Prior art keywords
refrigerant pipe
circumferential surface
refrigerant
socket
pipe
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KR1020090014925A
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Korean (ko)
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김갑영
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(주)삼원산업사
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Priority to KR1020090014925A priority Critical patent/KR20100095894A/en
Publication of KR20100095894A publication Critical patent/KR20100095894A/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
    • F16L19/04—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 using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
    • 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
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Pressure Members (AREA)

Abstract

PURPOSE: A refrigerant pipe connecting structure is provided to guarantee the air-tightness of a refrigerant pipe connection part and to prevent damage to a welded part when the refrigerant pipe vibrates. CONSTITUTION: A refrigerant pipe connecting structure comprises a flare nut(50) and a socket(40). One side of a flare nut is inserted into a first refrigerant pipe(31) and moves along the longitudinal direction of the outer circumference of the first refrigerant pipe. A female screw is formed on the inner circumference of the flare nut. One side of the socket is formed on the inner circumference of an expanded part(31a) of the first refrigerant pipe. The socket is installed in a second refrigerant pipe(32) and moves along the longitudinal direction of the outer circumference of the second refrigerant pipe.

Description

냉매관 연결구조{STRUCTURE FOR CONNECTING REFRIGERANT PIPE}Refrigerant pipe connection structure {STRUCTURE FOR CONNECTING REFRIGERANT PIPE}

본 발명은 냉매관 연결시 용접 등의 공정을 요구하지 않으며 간소한 방법으로 냉매관을 연결하고, 냉매관 연결부위의 기밀성을 종래에 비해 개선한 냉매관 연결구조에 관한 것이다.The present invention relates to a refrigerant pipe connecting structure which does not require a process such as welding when connecting a refrigerant pipe and connects the refrigerant pipe in a simple manner, and improves the airtightness of the refrigerant pipe connecting portion as compared with the related art.

공기조화기 등에 설치되는 냉매관의 연결구조로서, 이하에서는 공기조화기에 설치되는 냉매관의 연결구조를 일예로 설명한다.As a connection structure of a refrigerant pipe provided in an air conditioner, the following describes an example of a connection structure of a refrigerant pipe provided in an air conditioner.

일반적으로, 공기조화기란 냉매를 상온에서 증발시켜 주변의 대기로부터 열을 흡수하여 흡수된 열을 다른 계에 방열하여 주변의 대기를 냉각시키는 장치이다.In general, an air conditioner is a device for evaporating a refrigerant at room temperature to absorb heat from the surrounding atmosphere and radiating the absorbed heat to another system to cool the surrounding atmosphere.

공기조화기의 기본적인 구조는 냉매를 증발시켜 주변의 대기를 냉각시키는 증발기와, 상기 증발기를 통하여 나온 기체상태의 냉매를 고온 고압으로 압축시키는 압축기와, 상기 압축기를 통하여 압축된 기체상태의 냉매를 상온의 액체상태로 응축시키는 응축기 및 상기 응축기를 통하여 나온 액체상태의 고압의 냉매를 감압시키는 모세관으로 구성된다.The basic structure of an air conditioner includes an evaporator for evaporating a refrigerant to cool the surrounding air, a compressor for compressing a gaseous refrigerant from the evaporator at high temperature and high pressure, and a gaseous refrigerant compressed through the compressor at room temperature. It consists of a condenser for condensing in the liquid state of the capillary tube for reducing the high-pressure refrigerant in the liquid state through the condenser.

상기의 공기조화기는 분리형과 일체형으로 구분할 수 있으며, 일체형 공기조화기 는 증발기, 압축기, 응축기 및 모세관 전부를 하나의 몸체 내에 장착된 것이 고, 분리형 공기조화기는 기능과 효율 등을 고려하여 증발기, 압축기, 응축기 및 모세관 등을 분리하여 설치되는 것이다.The air conditioner can be divided into a separate type and an integrated type, and the integrated air conditioner is an evaporator, a compressor, a condenser, and a capillary tube, all of which are mounted in one body. To separate the condenser and capillary tube.

도 1에 도시된 바와 같이, 분리형 공기조화기는 증발기 및 송풍팬을 내장하여 구성되어 실내에 설치되는 부분을 통상적으로 공기조화기의 실내기(2)라 하고, 압축기 및 응축기 등을 탑재하여 실외에 설치되는 부분을 통상적으로 공기조화기의 실외기(1)라 한다. 공기조화기는 냉매가 순환하면서 실내의 열을 흡수하여 대기로 발열하게 되는데, 상기의 분리형 공기조화기는 실내기(2)와 실외기(1)가 이격되어 있으므로, 이들에 사이의 냉매의 순환을 위하여 냉매관(3)이 연결되어 있다.As shown in FIG. 1, the separate type air conditioner is constructed by incorporating an evaporator and a blower fan, and a part installed indoors is generally called an indoor unit 2 of an air conditioner, and is installed outdoors by mounting a compressor and a condenser. The part to be referred to is commonly referred to as the outdoor unit 1 of the air conditioner. The air conditioner absorbs heat from the room while the refrigerant circulates and generates heat to the atmosphere. Since the indoor unit 2 and the outdoor unit 1 are spaced apart from each other, the refrigerant pipe is used to circulate the refrigerant therebetween. (3) is connected.

상기의 냉매관(3)은 기체상태의 냉매가 실외기(1) 내의 압축기에 의해 고온 고압의 기체상태로 압축된 후 방열팬 및 응축 작용에 의해 열교환되어 고온 액상으로 팽창밸브를 통과하여 압력이 강화된 후 실내기(2)로 보내지는 고압 냉매가 통과하는 고압 냉매관과, 상기 고압 냉매관을 통하여 실내기(2)의 증발기로 유입되어 기화됨으로써 주위의 열을 흡수하고, 이 때 형성되는 찬 공기는 증발기에 인접하여 위치하는 송풍팬에 의해 실내로 토출되며 증발기 내에서 기화된 저압의 냉매가스를 다시 실외기(1)로 회수하기 위한 저압 냉매관으로 구분된다. 상기의 고압 및 저압 냉매관(3)은 일반적으로 동파이프를 사용하고 있으며, 연결구조(4)는 도 2 내지 도 4에 도시한 바와 같이 취하여 이루어진다.The refrigerant pipe (3) is a gas refrigerant is compressed to a gas state of high temperature and high pressure by a compressor in the outdoor unit (1) and then heat exchanged by a heat radiating fan and condensing action through the expansion valve to a high temperature liquid phase to increase the pressure After the high pressure refrigerant to be sent to the indoor unit 2 is passed through the high-pressure refrigerant pipe, and through the high-pressure refrigerant pipe to the evaporator of the indoor unit 2 is vaporized to absorb the heat of the surroundings, the cold air formed at this time is It is discharged into the room by a blower fan located adjacent to the evaporator and is divided into a low pressure refrigerant pipe for recovering the low pressure refrigerant gas vaporized in the evaporator back to the outdoor unit 1. The high pressure and low pressure refrigerant pipes 3 generally use copper pipes, and the connection structure 4 is taken as shown in Figs.

즉, 종래의 공기조화기의 실내기(2)와 실외기(1)를 연결하는 냉매관(3)의 연결구조는 실외기(1) 측의 냉매관(3)의 일측에 용접(F)되어 구비되는 소켓(10)과, 실내기(2) 측의 냉매관(3)에 삽입된 플레어 너트(20)에 의해 이루어지는데, 실내 기(2) 측의 냉매관(3)의 일측은 도 2에 도시한 바와 같이 플레어(flare) 형상의 확관부(3a)가 형성되어 있다. That is, the connection structure of the refrigerant pipe 3 connecting the indoor unit 2 and the outdoor unit 1 of the conventional air conditioner is welded (F) to one side of the refrigerant pipe 3 on the outdoor unit 1 side. The socket 10 and the flare nut 20 inserted into the refrigerant pipe 3 on the indoor unit 2 side, one side of the refrigerant pipe 3 on the indoor unit 2 side are shown in FIG. As described above, a flare-shaped expansion pipe portion 3a is formed.

소켓(10)은 내부가 관통되어 있고 일측은 실외기(1) 측의 냉매관(3)과 용접(F)되어 있으며 타측의 외주면에는 숫나사가 형성되어 있고 끝단은 상기 확관부(3a)의 내주면과 대응되게 형성되어 확관부(3a)의 내주면과 밀착된다. The socket 10 is penetrated inside, one side is welded (F) with the refrigerant pipe (3) of the outdoor unit 1 side, the outer peripheral surface of the other side is formed with a male thread and the end is the inner peripheral surface of the expansion pipe (3a) It is formed so as to be in close contact with the inner circumferential surface of the expansion pipe 3a.

플레어 너트(20)는 상기 소켓(10)과 결합하기 위해 내주면에 암나사가 형성되어 있고, 실내기(2) 측의 냉매관(3)의 길이방향으로 이동이 가능하다.The flare nut 20 has a female screw formed on an inner circumferential surface to be coupled to the socket 10, and is movable in the longitudinal direction of the refrigerant pipe 3 on the indoor unit 2 side.

따라서, 연결구조(4)는 플레어 너트(20)와 소켓(10)의 결합으로 완성되는데 이때 소켓(10)의 끝단과 확관부(3a)가 밀착됨으로 기밀성이 확보된다.Therefore, the connection structure 4 is completed by the combination of the flare nut 20 and the socket 10, the end of the socket 10 and the expansion pipe portion (3a) is in close contact is ensured airtightness.

이와 같은 냉매관 연결구조는 용접(F) 과정이 요구되어 공기조화기 설치시 시간이 지연되는 단점이 있고, 실외기(2)의 진동 등에 의해 용접(F) 부위가 파손되는 사례가 빈번하여 냉매가 누설됨으로서 공기조화기의 성능이 저하되고 유지보수 비용이 증가하는 단점이 있었다.Such a refrigerant pipe connection structure requires a welding (F) process, which causes a delay in installing an air conditioner, and frequently causes damage to the welding (F) part due to vibration of the outdoor unit (2). As a result of the leakage, the performance of the air conditioner is degraded and the maintenance cost is increased.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 냉매관 연결시 용접 등의 공정을 요구하지 않으며 간소한 방법으로 냉매관을 연결하고, 냉매관 연결부위의 기밀성을 종래에 비해 개선한 본 발명에 따른 냉매관 연결구조를 제공하는 데 있다.The present invention has been made to solve the above problems, an object of the present invention does not require a process, such as welding when connecting the refrigerant pipe, connecting the refrigerant pipe in a simple manner, the airtightness of the refrigerant pipe connection portion It is to provide a refrigerant pipe connecting structure according to the invention improved compared to.

상기와 같은 본 발명의 목적은 일측은 플레어(flare) 형상의 확관부가 형성된 1냉매관에 삽입되어 1냉매관의 외주면 길이방향으로 유동가능하고 내주면에 암나사가 형성된 플레어 너트와; 일측은 상기 1냉매관의 확관부의 내주면과 대응되게 형성되어 확관부의 내주면과 밀착되는 접면부가 형성된 2냉매관에 삽입되어 2냉매관의 외주면 길이방향으로 유동가능하고 일측은 숫나사가 형성되며 끝단에는 상기 접면부의 외주면과 밀착되는 내경을 갖는 소켓;을 구비하여,An object of the present invention as described above is a flare nut which is inserted into one refrigerant pipe having a flare-shaped expansion pipe formed on one side thereof and movable in the longitudinal direction of the outer circumferential surface of the one refrigerant pipe, and having a female screw formed on the inner circumferential surface; One side is formed to correspond to the inner circumferential surface of the expansion pipe of the first refrigerant pipe is inserted into the two refrigerant pipes formed with a contact portion in close contact with the inner circumferential surface of the expansion pipe is possible to flow in the longitudinal direction of the outer circumferential surface of the two refrigerant pipes, one side is formed with an end Is provided with a socket having an inner diameter in close contact with the outer peripheral surface of the contact portion,

상기 확관부의 내주면과 접면부의 외주면을 밀착시키고, 소켓을 접면부의 외주면에 밀착시키며, 소켓의 숫나사와 플레어 너트의 암나사를 체결함으로써 이루어지는 것을 특징으로 하는 냉매관 연결구조에 의해 달성된다.The inner circumferential surface of the expansion pipe portion and the outer circumferential surface of the contact portion are brought into close contact with each other, the socket is brought into close contact with the outer circumferential surface of the contact portion, and the refrigerant pipe connecting structure is formed by fastening the male screw of the socket and the female screw of the flare nut.

본 발명에 따른 냉매관 연결구조에 의하면, 용접 등의 공정을 요구하지 않아 조립시간이 단축되고, 냉매관 진동시 용접 부위가 파손되던 종래의 문제점으로부터 해소되는 장점이 있다.According to the refrigerant pipe connection structure according to the present invention, the assembly time is shortened by not requiring a process such as welding, and there is an advantage that the welded part is broken during the refrigerant pipe vibration.

이하, 본 발명의 양호한 실시예를 도시한 첨부도면들과 관련하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings showing a preferred embodiment of the present invention will be described in detail.

본 발명에 따른 냉매관 연결구조를 이루기 위해서는 도 5 내지 도 7에 도시한 바와 같은 1냉매관(31)과 플레어 너트(50)와 2냉매관(32)과 소켓(40)이 요구된다.To achieve the refrigerant pipe connection structure according to the present invention, one refrigerant pipe 31, a flare nut 50, two refrigerant pipes 32, and a socket 40 as shown in FIGS. 5 to 7 are required.

즉, 일측은 플레어(flare) 형상의 확관부(31a)가 형성된 1냉매관(31)에 삽입되어 1냉매관(31)의 외주면 길이방향으로 유동가능하고 내주면에 암나사가 형성된 플레어 너트(50)와, 일측은 상기 1냉매관(31)의 확관부(31a)의 내주면과 대응되게 형성되어 확관부(31a)의 내주면과 밀착되는 접면부(32a)가 형성된 2냉매관(32)에 삽입되어 2냉매관(32)의 외주면 길이방향으로 유동가능하고 일측은 숫나사가 형성되며 끝단에는 상기 접면부(32a)의 외주면과 밀착되는 내경을 갖는 소켓(40)이 요구된다.That is, one side is inserted into the one refrigerant pipe 31 in which the flare-shaped expansion pipe 31a is formed, which is movable in the longitudinal direction of the outer circumferential surface of the one refrigerant pipe 31, and the flared nut 50 having the female screw formed on the inner circumferential surface thereof. And one side is inserted into the two refrigerant pipes 32 formed to correspond to the inner circumferential surface of the expansion pipe portion 31a of the first refrigerant pipe 31 and having a contact portion 32a in close contact with the inner circumferential surface of the expansion pipe portion 31a. 2, the outer circumferential surface of the refrigerant pipe 32 is movable in the longitudinal direction, one side is formed with a male screw is required at the end having a socket 40 having an inner diameter in close contact with the outer circumferential surface of the contact portion (32a).

이와 같은 구성이 갖춰지면 상기 확관부(31a)의 내주면과 접면부(32a)의 외주면을 밀착시키고, 소켓(40)을 접면부(32a)의 외주면에 밀착시키며, 소켓(40)의 숫나사와 플레어 너트(50)의 암나사를 체결하면 본 발명에 따른 냉매관 연결구조가 완성되는데, 도 5 내지 도 7을 참조하여 살펴보면, 우선 플레어 너트(50)는 1냉매관(31)의 외주면 길이방향으로 자유롭게 유동이 가능하지만 1냉매관(31)의 일측에 형성되는 확관부(31a)에는 걸리게끔 내부 구조를 취하고 있고, 내주면은 암나사가 형성되어 있다. 소켓(40)은 플레어 너트(50)와 마찬가지로 2냉매관(32)의 외주면 길이방향으로 자유롭게 유동이 가능하다. 그러나 소켓(40)은 2냉매관(32)의 일측에 형성된 접면부(32a)에 의해 외부로 이탈되지 않는다. 이는 접면부(32a)의 외경이 소켓(40)의 내경 보다 크기 때문이다. 따라서 소켓(40)의 끝단은 상기 접면부(32a)의 외주면에 밀착되며, 접면부(32a)와 확관부(31a)의 밀착 및 플레어 너트(50)와 소켓(40)의 결합으로 기밀성이 확보된다. 한편, 상기 확관부(31a)의 내주면과 밀착되는 접면부(32a)의 부위는 냉매가 유동되어야 하기 때문에 일부가 개방된 구조를 취한다.If such a configuration is provided, the inner circumferential surface of the expansion pipe portion 31a and the outer circumferential surface of the contact portion 32a are brought into close contact with each other, and the socket 40 is brought into close contact with the outer circumferential surface of the contact portion 32a with the male screw and flare of the socket 40. When the female screw of the nut 50 is fastened, the refrigerant pipe connection structure according to the present invention is completed. Referring to FIGS. 5 to 7, the flare nut 50 is freely extended in the longitudinal direction of the outer circumferential surface of the one refrigerant pipe 31. Although it is possible to flow, the internal structure is taken to be caught by the expansion pipe portion 31a formed on one side of the one refrigerant pipe 31, and an internal thread is formed with an internal thread. Like the flare nut 50, the socket 40 can freely flow in the longitudinal direction of the outer circumferential surface of the two refrigerant pipes 32. However, the socket 40 is not separated to the outside by the contact portion 32a formed on one side of the two refrigerant pipes 32. This is because the outer diameter of the contact portion 32a is larger than the inner diameter of the socket 40. Therefore, the end of the socket 40 is in close contact with the outer circumferential surface of the contact portion 32a, and the airtightness is secured by the contact between the contact portion 32a and the expansion pipe 31a and the combination of the flare nut 50 and the socket 40. do. On the other hand, the portion of the contact portion (32a) in close contact with the inner circumferential surface of the expansion pipe (31a) takes a structure that is partly open because the refrigerant must flow.

이상 본 발명이 양호한 실시예와 관련하여 설명되었으나, 본 발명의 기술 분야에 속하는 자들은 본 발명의 본질적인 특성에서 벗어나지 않는 범위 내에 다양한 변경 및 수정을 용이하게 실시할 수 있을 것이다. 그러므로 개시된 실시예는 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 하고, 본 발명의 진정한 범위는 전술한 설명이 아니라 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will readily occur to those skilled in the art without departing from the spirit and scope of the invention. Therefore, it should be understood that the disclosed embodiments are to be considered in an illustrative rather than a restrictive sense, and that the true scope of the invention is indicated by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof, .

도 1은 종래의 냉매관 연결구조를 나타내기 위한 공기조화기의 개략도,1 is a schematic diagram of an air conditioner for showing a conventional refrigerant pipe connection structure,

도 2 내지 도 4는 종래의 냉매관 연결구조의 조립순서를 나타낸 도면,2 to 4 is a view showing the assembly sequence of a conventional refrigerant pipe connection structure,

도 5 내지 도 7은 본 발명에 따른 냉매관 연결구조의 조립순서를 나타낸 도면.5 to 7 are views showing the assembly sequence of the refrigerant pipe connection structure according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

31: 1냉매관 31a: 확관부31: 1 refrigerant pipe 31a: expansion pipe

32: 2냉매관 32a: 접면부32: 2 refrigerant pipe 32a: contact portion

40: 소켓 50: 플레어 너트40: socket 50: flare nut

Claims (1)

일측은 플레어(flare) 형상의 확관부(31a)가 형성된 1냉매관(31)에 삽입되어 1냉매관(31)의 외주면 길이방향으로 유동가능하고 내주면에 암나사가 형성된 플레어 너트(50)와;One side is inserted into the one refrigerant pipe (31) formed with a flare-shaped expansion pipe (31a) is movable in the longitudinal direction of the outer circumferential surface of the one refrigerant pipe 31 and the female screw formed on the inner circumferential surface; 일측은 상기 1냉매관(31)의 확관부(31a)의 내주면과 대응되게 형성되어 확관부(31a)의 내주면과 밀착되는 접면부(32a)가 형성된 2냉매관(32)에 삽입되어 2냉매관(32)의 외주면 길이방향으로 유동가능하고 일측은 숫나사가 형성되며 끝단에는 상기 접면부(32a)의 외주면과 밀착되는 내경을 갖는 소켓(40);을 구비하여, One side is formed to correspond to the inner circumferential surface of the expansion pipe portion 31a of the first refrigerant pipe 31 and is inserted into the two refrigerant pipes 32 having the contact portion 32a formed in close contact with the inner circumferential surface of the expansion pipe 31a. A socket 40 which is movable in the longitudinal direction of the outer circumferential surface of the pipe 32 and one side is formed with a male screw, and has an inner diameter in close contact with the outer circumferential surface of the contact portion 32a. 상기 확관부(31a)의 내주면과 접면부(32a)의 외주면을 밀착시키고, 소켓(40)을 접면부(32a)의 외주면에 밀착시키며, 소켓(40)의 숫나사와 플레어 너트(50)의 암나사를 체결함으로써 이루어지는 것을 특징으로 하는 냉매관 연결구조.The inner circumferential surface of the expansion pipe portion 31a and the outer circumferential surface of the contact portion 32a are brought into close contact with each other, and the socket 40 is brought into close contact with the outer circumferential surface of the folded portion 32a with the male screw of the socket 40 and the female screw of the flare nut 50. Refrigerant pipe connection structure, characterized in that made by fastening.
KR1020090014925A 2009-02-23 2009-02-23 Structure for connecting refrigerant pipe KR20100095894A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101039503B1 (en) * 2011-02-23 2011-06-08 성기천 A connector for refrigerant pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101039503B1 (en) * 2011-02-23 2011-06-08 성기천 A connector for refrigerant pipe

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