KR100784612B1 - Accumulator combined with internal heat exchanger and expansion valve of air conditioner - Google Patents

Accumulator combined with internal heat exchanger and expansion valve of air conditioner Download PDF

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KR100784612B1
KR100784612B1 KR1020060078187A KR20060078187A KR100784612B1 KR 100784612 B1 KR100784612 B1 KR 100784612B1 KR 1020060078187 A KR1020060078187 A KR 1020060078187A KR 20060078187 A KR20060078187 A KR 20060078187A KR 100784612 B1 KR100784612 B1 KR 100784612B1
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South Korea
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low pressure
refrigerant
tank
pipe
outlet
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KR1020060078187A
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Korean (ko)
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이홍열
곽효상
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주식회사 두원공조
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/04—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
    • F25B43/043—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases for compression type systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/051—Compression system with heat exchange between particular parts of the system between the accumulator and another part of the cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/053—Compression system with heat exchange between particular parts of the system between the storage receiver and another part of the system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/18—Optimization, e.g. high integration of refrigeration components

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

An accumulator combined with an internal heat exchanger and an expansion valve of an air conditioner are provided to exchange heat between low-pressure refrigerant and high-pressure refrigerant in a low-pressure container installed in an accumulator tank to improve the efficiency of heat exchange and the efficiency of a system accordingly, install inlet and outlet pipes at the low-pressure container concentratedly to lay a pipe easily, and integrate an expansion valve with the accumulator to simplify a structure of a cooling system. A low-pressure side refrigerant inlet pipe(24) is connected with a hollow tank(20), protruded into an inner upper part of the tank to introduce a low-pressure refrigerant into the inner upper part of the tank. A low-pressure side refrigerant outlet pipe(26) is installed with an outlet part being close to the low-pressure side refrigerant inlet pipe to discharge gaseous refrigerant separated from the refrigerant introduced into the tank. A high-pressure coil pipe(28) is wound on the low-pressure side refrigerant inlet pipe and the outlet part of the low-pressure side refrigerant outlet pipe to exchange heat with the low-pressure refrigerant, wherein an expansion valve(30) is combined with an outlet part of the high-pressure coil pipe.

Description

냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기{Accumulator combined with internal heat exchanger and expansion valve of air conditioner}Accumulator combined with internal heat exchanger and expansion valve of air conditioner

도1은 기액분리기를 가지는 냉방장치의 시스템도,1 is a system diagram of a cooling apparatus having a gas-liquid separator;

도2는 종래 냉방장치의 내부열교환기 일체형 기액분리기를 나타내는 단면 구성도,2 is a cross-sectional configuration diagram showing a gas-liquid separator with an internal heat exchanger of a conventional air conditioner;

도3은 본 발명의 실시예에 의한 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기를 나타내는 단면 구성도,Figure 3 is a cross-sectional view showing the expansion valve and the internal heat exchanger integrated gas-liquid separator of the cooling device according to an embodiment of the present invention;

도4는 본 발명이 적용된 냉방장치의 시스템도이다.4 is a system diagram of a cooling apparatus to which the present invention is applied.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

20 : 탱크 22 : 저압통20 tank 22 low pressure cylinder

24 : 저압측 냉매유입관 26 : 저압측 냉매유출관24: low pressure side refrigerant inlet pipe 26: low pressure side refrigerant inlet pipe

28 : 고압 코일관 28c : 유출부28: high pressure coil tube 28c: outlet portion

30 : 팽창밸브30: expansion valve

본 발명은 냉방장치의 기액분리기에 관한 것으로서, 보다 상세하게는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기에 관한 것이다.The present invention relates to a gas-liquid separator of a cooling device, and more particularly, to an expansion valve and an internal heat exchanger integrated gas-liquid separator of a cooling device.

일반적으로 차량의 냉방을 위한 공조장치에서, 냉매는 압축기, 응축기, 팽창밸브, 증발기를 순환하는 냉동사이클을 형성하는데, 압축기에 의해 임계상태를 초과하는 초임계상태로 압축되는 냉동 사이클을 초임계 냉동사이클이라 한다. 통상적으로 초임계 냉동 사이클에 있어서는, 냉매가 압축된 이후에 대기 중으로 방열하는 과정에서 상변화를 겪지 않으므로, 이때의 방열장치는 응축기 대신 가스 냉각기로 불리운다.In general, in an air conditioner for cooling a vehicle, the refrigerant forms a refrigeration cycle that circulates a compressor, a condenser, an expansion valve, and an evaporator. The supercritical refrigeration cycle is compressed by a compressor into a supercritical state exceeding a threshold state. It is called a cycle. Typically, in a supercritical refrigeration cycle, since the refrigerant does not undergo a phase change in the process of radiating to the atmosphere after being compressed, the radiator at this time is called a gas cooler instead of a condenser.

이와 같은 초임계 냉동사이클에서, 냉매 특성상 증발기를 거쳐나온 냉매는 과열도를 형성하기 어렵기 때문에 압축기에 액체 냉매가 유입되고, 이로 인한 리퀴드 백(liquid back)현상이 발생하여 압축기에 손상을 입힐 수 있다. 이를 방지하기 위해 저압측에 기액분리기를 설치하여 이를 통해 기액을 분리하고, 기체 냉매를 내부열교환기를 통과시켜 과열도를 형성하여 압축기로 보내게 된다. 이때 가스 냉각기에서 나온 냉매는 상기 내부열교환기를 통과시켜 임계온도 이하로 내려 과냉각도 형성을 용이하게 한다.In such a supercritical refrigeration cycle, the refrigerant passing through the evaporator is difficult to form a superheat due to the nature of the refrigerant, so that the liquid refrigerant flows into the compressor, which may cause liquid back, which may damage the compressor. have. In order to prevent this, a gas-liquid separator is installed on the low pressure side to separate the gas-liquid, and the gaseous refrigerant is passed through the internal heat exchanger to form a superheat, which is then sent to the compressor. At this time, the refrigerant from the gas cooler passes through the internal heat exchanger to be lowered below a critical temperature to facilitate the formation of a supercooling degree.

이러한 초임계 냉동사이클의 냉방장치는 도1에 도시한 바와 같이, 냉방사이클을 형성하는 압축기(1), 콘덴서(가스 냉각기)(2), 팽창밸브(3) 및 증발기(4)가 설치되는 한편, 증발기로부터 나온 냉매로부터 기액을 분리하는 기액분리기(5)와, 상기 콘덴서(가스 냉각기)(2)로부터 유출된 냉매와 상기 기액분리기(5)로부터 유출된 냉매 사이의 열교환을 시키기 위한 내부열교환기(6)가 설치된 시스템이다.As shown in FIG. 1, the cooling device of such a supercritical refrigeration cycle is provided with a compressor 1, a condenser (gas cooler) 2, an expansion valve 3, and an evaporator 4, which form a cooling cycle. And an internal heat exchanger for performing heat exchange between the gas-liquid separator 5 for separating gas liquid from the refrigerant from the evaporator, and the refrigerant flowing out of the condenser (gas cooler) 2 and the refrigerant flowing out of the gas-liquid separator 5 ( 6) is installed system.

이러한 초임계 냉동사이클의 냉방장치는 기액분리기와 내부열교환기가 별도 로 구성되기 때문에 구조적으로 복잡하고 차량의 협소한 공간에 장착하기가 용이하지 못하였다. 이러한 문제점을 개선하기 위해 내부열교환기와 기액분리기를 통합한 내부열교환기 일체형 기액분리기가 한국등록실용신안 제20-0365161호로 개시되어 있다.The cooling device of such a supercritical refrigeration cycle is structurally complicated and difficult to install in a narrow space of the vehicle because the gas-liquid separator and the internal heat exchanger are configured separately. In order to solve this problem, an internal heat exchanger integrated gas-liquid separator incorporating an internal heat exchanger and a gas-liquid separator is disclosed in Korean Utility Model Registration No. 20-0365161.

상기 한국등록실용신안 제20-0365161호는 그 일실시예로서 도2에 도시한 바와 같이, 내부가 빈 중공의 기액분리기 몸체(11)와, 일단이 가스 냉각기(2 : 도1에 도시)의 출구단과 연결되고 타단이 팽창밸브(3 : 도1에 도시)의 입구단과 연결되며 상기 기액분리기 몸체(11) 내부에서 나선형으로 감기도록 형성된 내측 열교환관(12)과, 상기 내측 열교환관(12)의 외면과의 사이에 냉매가 유동하는 공간이 형성되도록 내측 열교환관(12)의 외측으로 따라 일정 길이로 형성되어 내측 열교환관(12)과 함께 이중관을 형성하는 외측 열교환관(13)과, 일단이 증발기(4 : 도1에 도시)의 출구단과 연결되며 타단이 상기 외측 열교환관(13)의 일단부에 연결되는 냉매유입관(15)과, 일단이 상기 기액분리기 몸체(11)의 상부에 위치되며 타단이 압축기(1 : 도1에 도시)의 입구단과 연결되어 기상냉매를 압축기로 유도하는 냉매 토출관(16)을 구비한다. As shown in FIG. 2, the Korean Utility Model Utility Model No. 20-0365161 discloses a hollow gas-liquid separator body 11 having an empty inside and one end of a gas cooler (2: shown in FIG. 1). An inner heat exchange tube 12 connected to an outlet end and connected to an inlet end of an expansion valve 3 (shown in FIG. 1) and spirally wound inside the gas-liquid separator body 11, and the inner heat exchange tube 12. An outer heat exchanger tube 13 having a predetermined length along an outer side of the inner heat exchanger tube 12 to form a space between the outer surface of the inner heat exchanger tube 12 and a double tube together with the inner heat exchanger tube 12, and A refrigerant inlet pipe 15 connected to the outlet end of the evaporator 4 (shown in FIG. 1) and the other end connected to one end of the outer heat exchanger tube 13, and one end of the evaporator 4 at the top of the gas-liquid separator body 11. The other end is connected to the inlet end of the compressor (shown in Fig. 1) Provided with a refrigerant discharge tube 16 leading to a refrigerant to the compressor.

상기 냉매 유입관(15)은 상기 내측 열교환관(12)의 냉매 유입측과 가까운 부분에서 외측 열교환관(13)과 연통되며, 상기 외측 열교환관(13)은 내측 열교환관(12)의 토출측과 가까운 일단부에 기액분리기 몸체(11) 내부로 냉매가 토출되는 토출공(13a)이 형성되고, 상기 냉매 토출관(16)의 상단부와 외측 열교환관(13)의 토출공(13a) 사이에는 필터(14)가 설치되며, 상기 냉매 토출관(16)의 하부에는 기액 분리기 몸체(11) 하부에 모여진 압축기 작동용 오일이 회수되도록 오일 회수공(16a)이 형성되어 있다.The refrigerant inlet tube 15 communicates with the outer heat exchange tube 13 at a portion close to the refrigerant inlet side of the inner heat exchange tube 12, and the outer heat exchange tube 13 is connected to the discharge side of the inner heat exchange tube 12. A discharge hole 13a through which the refrigerant is discharged into the gas-liquid separator body 11 is formed at an adjacent end thereof, and a filter is formed between the upper end of the refrigerant discharge tube 16 and the discharge hole 13a of the outer heat exchange tube 13. 14 is provided, and an oil recovery hole 16a is formed in the lower portion of the refrigerant discharge tube 16 so that oil for compressor operation collected under the gas-liquid separator body 11 is recovered.

그런데, 상기한 바와 같은 종래 냉방장치의 내부열교환기 일체형 기액분리기에는 기액분리기 몸체의 상 하측에 냉매 입출구가 형성되어 배관이 용이하지 못하고, 기액분리기 몸체 내부에서의 열교환 효율이 만족할 만하지 못하여 시스템 효율이 낮다는 문제점이 있었다.However, the above-described internal heat exchanger integrated gas-liquid separator of the conventional air conditioner has a refrigerant inlet and outlet formed on the upper and lower sides of the gas-liquid separator body, so that piping is not easy, and heat exchange efficiency in the gas-liquid separator body is not satisfactory, resulting in low system efficiency. Had a problem.

또한 자동차의 냉방장치는 설치면적이 한정되어 있으므로 간단한 구조에 대한 요구가 지속적으로 있어 왔다.In addition, the cooling device of the vehicle has a limited installation area, there has been a continuous demand for a simple structure.

따라서, 본 발명은 상기 문제점을 해결하기 위해 이루어진 것으로서, 본 발명의 목적은 냉매관의 배관이 용이하고 열교환 효율을 높여 시스템의 효율을 상승시키며 구조를 간단히 하는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기를 제공하는 데 있다.Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to facilitate the piping of the refrigerant pipe, increase the heat exchange efficiency, increase the efficiency of the system, and simplify the structure of the expansion valve and the internal heat exchanger integrated gas-liquid. To provide a separator.

상기 목적을 달성하기 위한 본 발명에 의한 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기는, 내부가 빈 중공의 탱크와, 상기 탱크의 내측 상부에 저압냉매가 유입하도록 상기 탱크의 내측 상부에 돌출하여 연결된 저압측 냉매유입관과, 상기 탱크 내부에 유입된 냉매에서 분리된 기상냉매가 배출되도록 저압측 냉매유입관에 그 유출부가 인접하여 설치된 저압측 냉매유출관과, 상기 저압냉매와 열교환되도록 상기 저압측 냉매유입관과 저압측 냉매유출관의 유출부를 사이에 두고 감긴 고압코일관으로 이루어지되, 상기 고압코일관의 유출부에는 팽창밸브가 일체로 결합되어 있는 것을 특징으로 한다.The expansion valve and the internal heat exchanger-integrated gas-liquid separator of the cooling apparatus according to the present invention for achieving the above object are projected to the inner upper portion of the tank so that the low pressure refrigerant flows into the inner hollow of the tank and the inner upper portion of the tank; A low pressure side refrigerant inlet pipe connected to the low pressure side refrigerant inlet pipe, a low pressure side refrigerant inlet pipe having an outlet portion adjacent to the low pressure side refrigerant inlet pipe such that the gaseous refrigerant separated from the refrigerant introduced into the tank is discharged, and the low pressure refrigerant so as to exchange heat with the low pressure refrigerant It consists of a high-pressure coil pipe wound around the outlet portion of the refrigerant inlet pipe and the low-side refrigerant inlet pipe, characterized in that the expansion valve is integrally coupled to the outlet of the high-pressure coil pipe.

본 발명은, 내부가 빈 중공의 탱크와, 저압냉매가 유입하여 고인 후 상기 탱크 내부로 유출하도록 상기 탱크 내부의 상부에 설치된 저압통과, 상기 저압통의 내부에 저압냉매가 유입하도록 상기 저압통의 내부로 돌출하여 연결된 저압측 냉매유입관과, 상기 탱크 내부에 유입된 냉매에서 분리된 기상냉매가 배출되도록 상기 저압통을 관통하여 설치된 저압측 냉매유출관과, 상기 저압통 내부에서 상기 저압냉매와 열교환되도록 상기 저압측 냉매유입관과 저압측 냉매유출관을 사이에 두고 감긴 고압코일관으로 이루어지되, 상기 고압코일관의 유출부에는 팽창밸브가 일체로 결합되어 있는 것을 특징으로 한다.The present invention relates to a hollow tank having an empty inside, a low pressure cylinder installed at an upper portion of the tank to flow into the tank after the low pressure refrigerant flows in, and a low pressure refrigerant flows into the inside of the low pressure cylinder. A low pressure side refrigerant inlet tube protruding into the inside, a low pressure side refrigerant outlet tube installed through the low pressure cylinder to discharge gaseous refrigerant separated from the refrigerant introduced into the tank, and the low pressure refrigerant inside the low pressure cylinder. The low pressure side refrigerant inlet pipe and the low pressure side refrigerant outlet pipe wound so as to exchange heat is made of a high pressure coil pipe, characterized in that the expansion valve is integrally coupled to the outlet of the high pressure coil pipe.

상기 탱크의 상단에는 뚜껑이 결합되고, 상기 고압코일관의 유출부는 상기 저압통의 하측에서 상측으로 상승하여 상기 뚜껑을 통과하여 배관되며, 팽창밸브는 상기 뚜껑부분에 위치하는 출구포트에 결합되어 있다.A lid is coupled to the upper end of the tank, and the outlet portion of the high pressure coil pipe rises from the lower side to the upper side of the tank, passes through the lid, and an expansion valve is coupled to an outlet port located at the lid portion. .

상기 저압측 냉매 유입관에서 상기 저압통내로 돌출된 부분에는 저압 냉매가 분사되도록 냉매 분사홀이 형성되어 있다.A portion of the low pressure side refrigerant inlet pipe protruding into the low pressure cylinder is formed with a refrigerant injection hole so that the low pressure refrigerant is injected.

상기 저압통의 바닥에는 저압통의 내부에 유입된 오일이 유출하도록 오일 통과홀이 형성되어 있다.An oil passage hole is formed at the bottom of the low pressure cylinder so that oil introduced into the low pressure cylinder flows out.

이하, 본 발명의 실시예에 대하여 첨부도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도3에 도시한 바와 같이, 본 발명에 의한 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기는, 내부가 빈 중공의 탱크(20)의 내부에는 저압냉매가 유입하여 고인 후 상기 탱크(20) 내부로 유출하도록 저압통(22)이 상기 탱크(20) 내부의 상부에 설치되고, 상기 저압통(22)의 내부에 저압냉매가 유입하도록 저압측 냉매유입관(24)이 상기 저압통(22)의 내부로 돌출하여 연결되며, 상기 탱크(20) 내부에 유입된 저압냉매에서 분리된 기상냉매가 배출되도록 저압측 냉매유출관(26)의 유출부(26c)가 상기 저압통(22)을 관통하여 설치되고, 상기 저압통(22) 내부에서 상기 저압냉매와 열교환되도록 상기 저압측 냉매유입관(24)과 저압측 냉매유출관(26)의 유출부(26c)를 사이에 두고 고압코일관(28)이 감겨 설치되며, 상기 고압코일관(28)의 고압냉매 유출부(28c)에는 팽창밸브(30)가 일체로 결합된 구조로 되어 있다.As shown in FIG. 3, the expansion valve and the internal heat exchanger-integrated gas-liquid separator of the air conditioning apparatus according to the present invention have a low pressure refrigerant flowing into the interior of the hollow hollow tank 20 and accumulated inside the tank 20. The low pressure cylinder 22 is installed in the upper portion of the tank 20 so that the low pressure refrigerant 22 flows into the low pressure cylinder 22 so that the low pressure refrigerant flows into the low pressure cylinder 22. The outlet 26c of the low pressure side refrigerant outflow pipe 26 penetrates the low pressure cylinder 22 so that the gaseous refrigerant separated from the low pressure refrigerant introduced into the tank 20 is discharged. The low pressure side refrigerant inlet pipe 24 and the outlet portion 26c of the low pressure side refrigerant outlet pipe 26 are disposed between the high pressure coil pipe so as to exchange heat with the low pressure refrigerant in the low pressure cylinder 22. 28 is wound and installed, the high-pressure refrigerant outlet portion 28c of the high-pressure coil pipe 28 is expanded The probe 30 is coupled to a structure in one piece.

본 실시예는 저압통(22)이 탱크(20)에 내장되고, 상기 저압통(22)의 내부에서 열교환이 이루어지는 구조로 되어 있으나, 저압통(22)이 없이 탱크(20)의 내측 상부에서 열교환이 이루어지는 구조로 구성될 수도 있다. In this embodiment, although the low pressure cylinder 22 is built in the tank 20 and has a structure in which heat exchange is performed in the inside of the low pressure cylinder 22, the low pressure cylinder 22 does not have an inner upper portion of the tank 20. It may be configured as a structure in which heat exchange takes place.

상기 탱크(20)의 상단에는 뚜껑(21)이 용접 또는 도시하지 않은 가스켓 및 체결볼트에 의해 결합되어 있다.The lid 21 is coupled to the top of the tank 20 by a gasket and a fastening bolt (not shown).

상기 저압통(22)의 상면에는 탱크(20)와 저압통(22)의 사이 내부에 저압냉매가 유출하도록 냉매통과홀(22a)이 형성되어 있고, 상기 저압통(22)의 바닥에는 저압통(22)의 내부에 유입된 오일이 유출하도록 오일 통과홀(22b)이 형성되어 있다.A coolant passage hole 22a is formed at an upper surface of the low pressure cylinder 22 to allow a low pressure refrigerant to flow out between the tank 20 and the low pressure cylinder 22, and a low pressure cylinder at the bottom of the low pressure cylinder 22. The oil passage hole 22b is formed so that the oil which flowed into the inside of 22 may flow out.

상기 저압측 냉매유입관(24)은 상기 탱크(20)와 저압통(22)을 통과하여 저압통(22)의 내부로 돌출하여 설치된다. 상기 저압측 냉매유입관(24)에서 상기 저압통(22)내로 돌출된 부분에는 저압냉매가 분사되도록 냉매 분사홀(24a)이 형성되어 있다. 상기 저압측 냉매유입관(24)은 뚜껑(21)을 통하여 저압통(22)의 내부로 돌출하 여 설치되어 있을 수도 있다.The low pressure side refrigerant inlet pipe 24 passes through the tank 20 and the low pressure cylinder 22 to protrude into the low pressure cylinder 22. A portion of the low pressure side refrigerant inlet pipe 24 protruding into the low pressure cylinder 22 is formed with a refrigerant injection hole 24a to inject low pressure refrigerant. The low pressure side refrigerant inlet pipe 24 may be provided to protrude into the low pressure cylinder 22 through the lid 21.

상기 저압측 냉매유출관(26)은, 상기 탱크(20) 내부에 유입된 냉매에서 분리된 기상냉매를 포집하도록 탱크(20)의 내부 상측에 기상냉매 포집부(26a : 입구부)형성되고, 상기 기상냉매 포집부(26a)에서 하측으로 구부려져 탱크(20)의 내부 하측을 경유하여 상기 저압통(22)을 관통한 다음, 탱크(20) 외부로 통과하여 설치되어 있다. 상기 저압측 냉매유출관(26)의 하측에는 탱크(20)내에 고인 오일이 유입되어 관로를 순환하도록 오일 리턴홀(26b)이 형성되어 있다.The low pressure side refrigerant outlet pipe 26 is formed with a gas phase refrigerant collecting part 26a (inlet) in the upper portion of the tank 20 to collect gaseous refrigerant separated from the refrigerant introduced into the tank 20. The gaseous refrigerant collection unit 26a is bent downward to penetrate the low pressure cylinder 22 via the inner lower side of the tank 20, and then pass through the tank 20 outside. An oil return hole 26b is formed below the low pressure refrigerant outlet pipe 26 so that the accumulated oil flows into the tank 20 to circulate the pipe.

상기 고압코일관(28)은 상기 탱크(20)와 저압통(22)을 통과하여 상기 저압통(22)의 내부에 위치하는 저압측 냉매유입관(24)과 저압측 냉매유출관(26)의 부분을 사이에 두고 코일형태로 감긴 구조로서, 고압냉매 유입부(28a), 열교환부(28b), 고압냉매 유출부(28c) 및 출구포트(28d)로 이루어진다.The high pressure coil pipe 28 passes through the tank 20 and the low pressure cylinder 22, and the low pressure side refrigerant inlet pipe 24 and the low pressure side refrigerant outlet pipe 26 positioned inside the low pressure cylinder 22. The coil is wound in the form of a structure having a portion of the high pressure refrigerant inlet 28a, a heat exchanger 28b, a high pressure refrigerant outlet 28c and an outlet port 28d.

상기 고압냉매 유입부(28a)는 상기 탱크(20)의 측면에서 관통하여 수평방향으로 설치되고, 상기 고압냉매 유출부(28c)는 상기 탱크(20) 또는 저압통(22)의 하측에서 상측으로 상승하여 상기 뚜껑(21)을 통과하여 배관되며, 팽창밸브(30)는 상기 뚜껑부분에 위치하는 출구포트(28d)에 결합되어 있다.The high pressure refrigerant inlet 28a penetrates from the side of the tank 20 in a horizontal direction, and the high pressure refrigerant outlet 28c is upward from the lower side of the tank 20 or the low pressure cylinder 22. Ascending and piped through the lid 21, the expansion valve 30 is coupled to the outlet port (28d) located in the lid portion.

상기 팽창밸브(30)는 상기 고압코일관(28)의 출구포트(28d)에 연결된 배관 파이프에 결합되어 있을 수도 있다.The expansion valve 30 may be coupled to a pipe pipe connected to the outlet port 28d of the high pressure coil pipe 28.

발명에 의한 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기는 도4에 도시한 바와 같이 압축기(1), 가스냉각기(2), 증발기(4)가 별개로 배치되되, 팽창밸브와 기액분리기와 내부열교환기가 하나의 유니트(8)로 일체화하여 배치되어 냉방 시스템을 이루므로 구조가 간단하고 설치면적이 줄어들게 된다. In the expansion valve and the internal heat exchanger integrated gas-liquid separator of the present invention, the compressor 1, the gas cooler 2, and the evaporator 4 are separately arranged, as shown in FIG. Since the heat exchanger is arranged integrally with one unit 8 to form a cooling system, the structure is simple and the installation area is reduced.

이와 같이 구성된 본 발명에 의한 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기에서, 증발기를 통과한 저압냉매는 저압측 냉매유입관(24)을 통해 저압통(22)의 내부에 유입한 후, 냉매통과홀(22a)을 통해 탱크(20) 내부로 흘러 비중차이에 의해 오일과 액상냉매와 기상냉매가 탱크의 하측에서부터 층을 이루며 분리된다. In the expansion valve and the internal heat exchanger integrated gas-liquid separator of the air conditioner according to the present invention configured as described above, the low pressure refrigerant passing through the evaporator flows into the inside of the low pressure cylinder 22 through the low pressure side refrigerant inlet tube 24, and then the refrigerant The oil, the liquid refrigerant, and the gaseous refrigerant are separated into layers from the bottom of the tank by the specific gravity difference, which flows into the tank 20 through the passage hole 22a.

상기 저압통(22)의 내부에 유입된 오일은 오일 통과홀(22b)를 통해 탱크(20)의 내부 하측으로 흐른다. 탱크(20)의 내부에 잔류하는 오일은 오일 리턴홀(26b)을 통해 저압측 냉매유출관(26)의 내부로 유입되어 순환함에 의해 압축기를 원활히 작동시킨다.The oil introduced into the low pressure cylinder 22 flows to the lower side of the tank 20 through the oil through hole 22b. Oil remaining in the tank 20 flows into the low pressure refrigerant outlet pipe 26 through the oil return hole 26b and circulates to smoothly operate the compressor.

상기 탱크(20)의 내부 상측에 위치하는 기상냉매는 기상냉매 포집부(26a)를 통해 저압측 냉매유출관(26)에 유입되어 저압통(22)을 통과하면서 고압냉매와 열교환된다.The gaseous refrigerant located inside the tank 20 is introduced into the low-pressure side refrigerant outlet pipe 26 through the gaseous-phase refrigerant collecting unit 26a, and passes through the low-pressure cylinder 22 to exchange heat with the high-pressure refrigerant.

가스냉각기를 통과한 고압냉매는 고압코일관(28)의 고압냉매 유입부(28a)를 통해 고압코일관(28)의 내부에 유입되어 저압통(22)의 내부에서 저압냉매(저압통과 저압측 냉매유입관과 저압측 냉매유출관의 내부에 흐르는 냉매)와 열교환된 후 고압냉매 유출부(28c)의 출구포트(28d)에 설치된 팽창밸브(30)에서 팽창된 후 외부 배관을 향해 흐르게 된다. The high pressure refrigerant passing through the gas cooler is introduced into the high pressure coil pipe 28 through the high pressure refrigerant inlet 28a of the high pressure coil pipe 28, and the low pressure refrigerant (low pressure cylinder and the low pressure side) inside the low pressure cylinder 22. After the heat exchange with the refrigerant flowing in the refrigerant inlet pipe and the low-pressure side refrigerant outflow tube) is expanded in the expansion valve 30 installed in the outlet port (28d) of the high-pressure refrigerant outlet (28c) flows toward the external pipe.

한편, 상기 저압통(22)의 내부에서 저압측 냉매유입관(24)에 형성된 냉매 분사홀(24a)을 통해 저압냉매가 분사되면서 고압냉매와의 열교환효율을 높인다.On the other hand, while the low pressure refrigerant is injected through the refrigerant injection hole 24a formed in the low pressure side refrigerant inlet pipe 24 in the low pressure cylinder 22, the heat exchange efficiency with the high pressure refrigerant is increased.

본 발명에 의한 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기에 의하면, 기액분리기 탱크의 내부에 저압통을 설치하고, 저압통의 내부에서 저압냉매와 고압냉매간의 열교환이 이루어지게 하므로써, 열교환 효율이 높게 되어 시스템 효율이 높아지고, 저압통에 입출구 배관을 집중적으로 설치하므로 배관하기가 손쉬워지며, 팽창밸브가 기액분리기와 일체로 되어 있으므로 냉방시스템의 구조가 간단해 진다는 효과가 있다.According to the expansion valve and the internal heat exchanger integrated gas-liquid separator of the air conditioner according to the present invention, the low-pressure cylinder is installed inside the gas-liquid separator tank and heat exchange between the low-pressure refrigerant and the high-pressure refrigerant is performed inside the low-pressure cylinder. The system efficiency is high, and the inlet and outlet pipes are concentrated in the low pressure cylinder, so the pipe is easy to install, and the expansion valve is integrated with the gas-liquid separator, thereby simplifying the structure of the cooling system.

Claims (6)

내부가 빈 중공의 탱크(20)를 구비하고, It is provided with the hollow tank 20 which is hollow inside, 상기 탱크(20)의 내측 상부에는 저압냉매가 유입하도록 저압측 냉매유입관(24)이 상기 탱크(20)에서 내측으로 돌출하여 연결되며,The low pressure side refrigerant inlet pipe 24 protrudes inwardly from the tank 20 so that the low pressure refrigerant flows into the inner upper portion of the tank 20. 상기 탱크(20) 내부에 유입된 저압냉매에서 분리된 기상냉매가 배출되도록 저압측 냉매유출관(26)이 그 유출부(26c)가 상기 저압측 냉매유입관(24)에 인접하여 설치되며, The low pressure side refrigerant outflow pipe 26 is installed adjacent to the low pressure side refrigerant inflow pipe 24 so that the gaseous refrigerant separated from the low pressure refrigerant introduced into the tank 20 is discharged. 상기 저압냉매와 열교환되도록, 상기 탱크(20) 내부로 들어오는 고압냉매 유입부(28a)와, 상기 저압측 냉매유출관(26)의 유출부(26c)와 상기 저압측 냉매유입관(24)을 사이에 두고 감기는 열교환부(28b)와, 열교환된 냉매가 탱크(20) 외부로 나가는 고압냉매 유출부(28c)를 가진 고압코일관(28)을 구비하며,In order to exchange heat with the low pressure refrigerant, the high pressure refrigerant inlet portion 28a entering the tank 20, the outlet portion 26c of the low pressure side refrigerant outlet pipe 26, and the low pressure side refrigerant inlet pipe 24 are connected to each other. It is provided with a high-pressure coil pipe 28 having a heat exchange part 28b wound in between, and a high-pressure refrigerant outlet 28c through which the heat-exchanged refrigerant exits the tank 20. 상기 고압코일관(28)의 고압냉매 유출부(28c)에는 팽창밸브(30)가 일체로 결합되어 있는 것을 특징으로 하는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기.Expansion valve 30 and the internal heat exchanger integrated gas-liquid separator of the cooling device, characterized in that the expansion valve 30 is integrally coupled to the high-pressure refrigerant outlet (28c) of the high-pressure coil pipe (28). 내부가 빈 중공의 탱크(20)를 구비하고,It is provided with the hollow tank 20 which is hollow inside, 저압냉매가 유입하여 고인 후 상기 탱크(20) 내부로 유출하도록 저압통(22)이 상기 탱크(20) 내부의 상부에 설치되며, ,A low pressure cylinder 22 is installed on the inside of the tank 20 so that the low pressure refrigerant flows into the tank 20 after the refrigerant is introduced therein. 상기 저압통(22)의 내부에 저압냉매가 유입하도록 저압측 냉매유입관(24)이 상기 저압통(22)의 내부로 돌출하여 연결되고, A low pressure side refrigerant inlet pipe 24 protrudes into the low pressure cylinder 22 so that a low pressure refrigerant flows into the low pressure cylinder 22. 상기 탱크(20) 내부에 유입된 저압냉매에서 분리된 기상냉매가 배출되도록 저압측 냉매유출관(26)이 그 유출부(26c)가 상기 저압통(22)을 관통하여 설치되며, The low pressure side refrigerant outflow pipe 26 is installed so that the outlet portion 26c penetrates the low pressure cylinder 22 so that the gaseous refrigerant separated from the low pressure refrigerant introduced into the tank 20 is discharged. 상기 저압통(22) 내부에서 상기 저압냉매와 열교환되도록, 상기 탱크(20) 내부의 저압통(22)에 들어오는 고압냉매 유입부(28a)와, 상기 저압측 냉매유출관(26)의 유출부(26c)와 상기 저압측 냉매유입관(24)을 사이에 두고 감기는 열교환부(28b)와, 열교환된 냉매가 상기 저압통(22)과 탱크(20) 외부로 나가는 고압냉매 유출부(28c)를 가진 고압코일관(28)을 구비하고,The high pressure refrigerant inlet 28a entering the low pressure cylinder 22 inside the tank 20 and the outlet portion of the low pressure side refrigerant outlet pipe 26 to exchange heat with the low pressure refrigerant in the low pressure cylinder 22. A heat exchange part 28b wound around the low pressure side refrigerant inlet pipe 24 and a high pressure refrigerant outlet 28c through which the heat exchanged refrigerant flows out of the low pressure cylinder 22 and the tank 20; And a high pressure coil pipe (28) having 상기 고압코일관(28)의 고압냉매 유출부(28c)에는 팽창밸브(30)가 일체로 결합되어 있는 것을 특징으로 하는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기.Expansion valve 30 and the internal heat exchanger integrated gas-liquid separator of the cooling device, characterized in that the expansion valve 30 is integrally coupled to the high-pressure refrigerant outlet (28c) of the high-pressure coil pipe (28). 청구항 1 또는 청구항 2에 있어서,The method according to claim 1 or 2, 상기 탱크(20)의 상단에는 뚜껑(21)이 결합되고, 상기 고압코일관(28)의 고압냉매 유출부(28c)는 상기 탱크(20)의 하측에서 상측으로 상승하여 상기 뚜껑(21)을 통과하여 배관되며,A lid 21 is coupled to the upper end of the tank 20, and the high pressure refrigerant outlet 28c of the high pressure coil pipe 28 is lifted upward from the lower side of the tank 20 to lift the lid 21. Piped through, 상기 팽창밸브(30)는 상기 뚜껑 부분에 위치하는 출구포트(28d)에 결합되어 있는 것을 특징으로 하는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기.The expansion valve 30 is the expansion valve and the internal heat exchanger integrated gas-liquid separator of the cooling device, characterized in that coupled to the outlet port (28d) located in the lid portion. 청구항 2에 있어서,The method according to claim 2, 상기 저압측 냉매유입관(24)에서 상기 저압통(22)내로 돌출된 부분에는 저압냉매가 분사되도록 냉매 분사홀(24a)이 형성되어 있는 것을 특징으로 하는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기.A portion of the low pressure side refrigerant inlet pipe (24) protruding into the low pressure cylinder (22) has a refrigerant injection hole (24a) is formed so that the low pressure refrigerant is injected, the expansion valve and the internal heat exchanger integrated gas liquid of the cooling device Separator. 청구항 2에 있어서,The method according to claim 2, 상기 저압통(22)의 바닥에는 저압통(22)의 내부에 유입된 오일이 유출하도록 오일 통과홀(22b)이 형성되어 있는 것을 특징으로 하는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기.An expansion valve and an internal heat exchanger integrated gas-liquid separator of a cooling device, characterized in that an oil passage hole (22b) is formed at the bottom of the low pressure cylinder (22) so that oil introduced into the low pressure cylinder (22) flows out. 내부가 빈 중공의 탱크(20)를 구비하고, It is provided with the hollow tank 20 which is hollow inside, 상기 탱크(20)의 내측 상부에는 저압냉매가 유입하도록 저압측 냉매유입관(24)이 상기 탱크(20)에서 내측으로 돌출하여 연결되며,The low pressure side refrigerant inlet pipe 24 protrudes inwardly from the tank 20 so that the low pressure refrigerant flows into the inner upper portion of the tank 20. 상기 탱크(20) 내부에 유입된 저압냉매에서 분리된 기상냉매가 배출되도록 저압측 냉매유출관(26)이 그 유출부(26c)가 상기 저압측 냉매유입관(24)에 인접하여 설치되며, The low pressure side refrigerant outflow pipe 26 is installed adjacent to the low pressure side refrigerant inflow pipe 24 so that the gaseous refrigerant separated from the low pressure refrigerant introduced into the tank 20 is discharged. 상기 저압냉매와 열교환되도록, 상기 탱크(20) 내부로 들어오는 고압냉매 유입부(28a)와, 상기 저압측 냉매유출관(26)의 유출부(26c)와 상기 저압측 냉매유입관(24)을 사이에 두고 감기는 열교환부(28b)와, 열교환된 냉매가 탱크(20) 외부로 나가는 고압냉매 유출부(28c)를 가진 고압코일관(28)을 구비하고,In order to exchange heat with the low pressure refrigerant, the high pressure refrigerant inlet portion 28a entering the tank 20, the outlet portion 26c of the low pressure side refrigerant outlet pipe 26, and the low pressure side refrigerant inlet pipe 24 are connected to each other. And a high pressure coil pipe 28 having a heat exchange part 28b wound therebetween and a high pressure refrigerant outlet 28c through which the heat exchanged refrigerant exits the tank 20, 상기 고압코일관(28)의 출구포트(28d)에 연결된 배관 파이프에는 팽창밸브(30)가 결합되어 있는 것을 특징으로 하는 냉방장치의 팽창밸브와 내부열교환기 일체형 기액분리기.Expansion valve 30 and the internal heat exchanger integrated gas-liquid separator of the cooling device, characterized in that the expansion pipe 30 is coupled to the pipe pipe connected to the outlet port (28d) of the high-pressure coil pipe (28).
KR1020060078187A 2006-08-18 2006-08-18 Accumulator combined with internal heat exchanger and expansion valve of air conditioner KR100784612B1 (en)

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