KR20000046828A - Structure for preventing introduction of liquid refrigerant of hermetic rotary type compressor - Google Patents

Structure for preventing introduction of liquid refrigerant of hermetic rotary type compressor Download PDF

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Publication number
KR20000046828A
KR20000046828A KR1019980063555A KR19980063555A KR20000046828A KR 20000046828 A KR20000046828 A KR 20000046828A KR 1019980063555 A KR1019980063555 A KR 1019980063555A KR 19980063555 A KR19980063555 A KR 19980063555A KR 20000046828 A KR20000046828 A KR 20000046828A
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KR
South Korea
Prior art keywords
accumulator
liquid refrigerant
hermetic rotary
sealed container
introduction
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KR1019980063555A
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Korean (ko)
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KR100311386B1 (en
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정채석
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구자홍
엘지전자 주식회사
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Priority to KR1019980063555A priority Critical patent/KR100311386B1/en
Publication of KR20000046828A publication Critical patent/KR20000046828A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/806—Pipes for fluids; Fittings therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE: A structure for preventing introduction of liquid refrigerant of a hermetic rotary type compressor is provided to omit an element for preventing introduction of liquid refrigerant to be mounted on an accumulator by preventing direct introduction of the liquid refrigerant by a structure that the accumulator and a sealing container are mounted at a different height and connected with a sealing container, thereby reducing manufacturing cost and improving productivity by reducing assembling time. CONSTITUTION: In a structure for preventing introduction of liquid refrigerant of a hermetic rotary type compressor, a refrigerant introduction tube(4) is mounted between a suction hole(2) inside a sealing container(1) and a top part of an accumulator(3) mounted at a side of the sealing container communicating the suction hole with the accumulator, the sealing container and the accumulator are mounted with a difference of height(H) for preventing direct introduction of liquid refrigerant from the accumulator to the sealing container, and a connecting tube(5) of a condenser connected to the accumulator is positioned on a top part in the accumulator penetrating a lower part of the accumulator.

Description

밀폐형 회전식 압축기의 액냉매 유입 방지구조Liquid refrigerant inflow prevention structure of hermetic rotary compressor

본 발명은 밀폐형 회전식 압축기의 액냉매 유입 방지구조에 관한 것으로서, 더욱 상세하게는 밀폐형 회전식 압축기의 초기 기동시 어큐뮬레이터로부터 밀폐 용기로 액체 냉매가 유입되는 현상을 단순한 구조로서 방지할 수 있도록 한 것이다.The present invention relates to a liquid refrigerant inflow preventing structure of the hermetic rotary compressor, and more particularly, to prevent the liquid refrigerant from flowing from the accumulator into the hermetic container during the initial startup of the hermetic rotary compressor as a simple structure.

일반적으로, 종래의 밀폐형 회전식 압축기는 도 1에 도시한 바와 같이, 소정의 내부 체적을 갖는 밀폐 용기(1)의 내부에 고정자(7)와 회전자(8) 등으로 구성되는 전동 기구부가 설치되어 있으며, 상기 회전자(8)의 내경에 압입되며 하부에 편심부(9)가 형성된 회전축(10)과, 상기 회전축(10)의 편심부(9)가 삽입되는 원통형의 압축 공간(P)이 형성되어 상기 편심부(9)를 감싸며 회전축(10)에 삽입되는 메인 베어링(11) 및 서브 베어링(12)과 함께 볼트(13)에 의해 결합되는 실린더(14)와, 상기 회전축(10)의 편심부(9)에 삽입됨과 더불어 실린더(14)의 압축 공간(P) 내주면을 접하면서 자전 및 공전하는 롤링 피스톤(15)과, 상기 실린더(14)의 일측에 직선운동가능하게 삽입되어 롤링 피스톤(15)의 외주면과 슬라이딩 접촉되면서 실린더(14)의 압축 공간(P)을 흡입실과 압축실로 분리하는 베인(도시는 생략함)을 포함하여 구성되는 압축 기구부가 설치된다.In general, the conventional hermetic rotary compressor, as shown in Figure 1, is provided with an electric mechanism composed of a stator (7), a rotor (8), etc. inside the sealed container 1 having a predetermined internal volume. The rotary shaft 10 is press-fitted into the inner diameter of the rotor 8 and the eccentric portion 9 is formed at the bottom, and the cylindrical compression space P into which the eccentric portion 9 of the rotary shaft 10 is inserted is A cylinder 14 coupled to the eccentric portion 9 by the bolt 13 together with the main bearing 11 and the sub bearing 12 inserted into the rotary shaft 10, and the rotary shaft 10 of the rotary shaft 10. The rolling piston 15 is inserted into the eccentric portion 9 and rotates and rotates while contacting the inner circumferential surface of the compression space P of the cylinder 14, and is inserted into one side of the cylinder 14 so as to be capable of linear movement. The compression space P of the cylinder 14 is divided into the suction chamber and the compression chamber while being in sliding contact with the outer peripheral surface of the 15. The compression mechanism part comprised including the vane (illustration omitted) is provided.

또한, 상기 베인에 의해 압축실을 이루는 실린더(14)의 일측에는 압축된 냉매 가스를 토출시키는 토출 포트가 형성되고, 상기 메인 베어링(11)의 일측에는 상기 토출 포트와 연통되는 토출공이 형성되며, 상기 메인 베어링의 상부에는 작동시 발생하는 토출 맥동음을 저감시키기 위한 흡입 머플러(16)가 결합된다.In addition, a discharge port for discharging the compressed refrigerant gas is formed at one side of the cylinder 14 constituting the compression chamber by the vane, and a discharge hole communicating with the discharge port is formed at one side of the main bearing 11. The upper portion of the main bearing is coupled to the suction muffler 16 for reducing the discharge pulsation noise generated during operation.

또한, 상기 실린더(14)의 흡입실에는 냉매 가스가 실린더(14)의 내부로 유입되는 흡입구(2)가 형성되고, 상기 흡입구(2)는 밀폐 용기(1)의 측부에 설치되는 어큐뮬레이터(3a) 및 냉매 유입관(4a)에 의해 연결된다.In addition, an intake port 2 through which refrigerant gas flows into the cylinder 14 is formed in the intake chamber of the cylinder 14, and the intake port 2 is an accumulator 3a installed at the side of the sealed container 1. ) And a refrigerant inlet pipe 4a.

그리고, 상기 토출 포트의 측부에 위치하도록 실린더(14)의 일측에는 소정의 두께와 면적을 갖도록 형성된 베인이 삽입되고, 상기 베인은 스프링에 의해 탄성적으로 지지되어 베인의 일측 단부가 롤링 피스톤(15)에 접촉되며, 상기 밀폐 용기(1)내의 바닥면에는 슬라이딩이 일어나는 부품에 공급되는 오일이 채워져 있으며, 상기 밀폐 용기(1)의 상부에는 밀폐 용기(1) 내부에서 압축된 냉매 가스가 외부로 토출되는 토출관(17)이 설치되어 구성된다.In addition, a vane formed to have a predetermined thickness and an area is inserted into one side of the cylinder 14 to be positioned at the side of the discharge port, and the vane is elastically supported by a spring so that one end of the vane is a rolling piston 15. ), The bottom surface of the sealed container (1) is filled with oil supplied to the sliding element, the upper portion of the sealed container (1) the refrigerant gas compressed in the sealed container (1) to the outside The discharge pipe 17 discharged is provided and comprised.

따라서, 밀폐형 회전식 압축기가 인가되는 전류에 의해 회전자(8)가 회전하면서 회전축(10)을 회전시키게 되면, 회전축(10)의 회전에 의해 회전축(10)의 편심부(9)에 결합되어 있는 롤링 피스톤(15)이 베인과 접촉된 상태에서 실린더(14)의 압축 공간(P)에서 편심 회전하게 되고, 상기 롤링 피스톤(14)의 편심 회전에 의해 실린더(14)에 형성된 압축 공간(P)의 체적 변화로 저온 및 저압의 냉매 가스가 어큐뮬레이터(3a)에 연통 설치된 냉매 유입관(4a)과 흡입구(2)를 통해 실린더(14)의 내부로 흡입되어 고온 및 고압의 상태로 압축된다.Therefore, when the rotor 8 rotates while the rotor 8 rotates by the current to which the hermetic rotary compressor is applied, it is coupled to the eccentric portion 9 of the rotation shaft 10 by the rotation of the rotation shaft 10. The rolling piston 15 is eccentrically rotated in the compression space P of the cylinder 14 in contact with the vanes, and the compression space P formed in the cylinder 14 by the eccentric rotation of the rolling piston 14. Due to the volume change of the refrigerant gas of low temperature and low pressure is sucked into the cylinder 14 through the refrigerant inlet pipe 4a and the suction port 2, which are in communication with the accumulator 3a, and are compressed to a state of high temperature and high pressure.

이와 동시에, 압축된 고온 및 고압의 냉매 가스는 실린더(14)의 토출 포트와 메인 베어링(11)의 토출공 및 흡입 머플러(16)의 토출공을 통해 실린더(14)의 외부로 토출되어 고정자(7)와 회전자(8) 사이를 통해서 밀폐 용기(1)내의 상부로 이동하여 토출관(17)을 통해 밀폐 용기(1)의 외부로 토출시키는 사이클을 반복하게 된다.At the same time, the compressed high-temperature and high-pressure refrigerant gas is discharged to the outside of the cylinder 14 through the discharge port of the cylinder 14, the discharge hole of the main bearing 11 and the discharge hole of the suction muffler 16 to stator ( Between the 7) and the rotor 8, the cycle of moving to the upper part in the sealed container 1 and discharging to the outside of the sealed container 1 through the discharge tube 17 is repeated.

그러나, 이와 같은 종래 밀폐형 회전식 압축기의 밀폐 용기(1) 측부에 설치된 어큐뮬레이터(3a) 내의 상부에는 어큐뮬레이터(3a)로부터 냉매 유입관(4a)과 흡입구(2)를 통해 밀폐 용기(1)의 내부로 액체 냉매가 유입되는 현상을 방지하기 위해 액냉매 유입 방지부재(6)가 설치되어 보통의 경우에는 제기능을 발휘하여 상기 냉매 유입관(4a)과 흡입구(2)를 통해 밀폐 용기(1)의 내부로 액체 냉매가 유입되는 것을 차단시킬 수 있지만, 압축기의 초기 기동시 대량으로 액체 냉매가 어큐뮬레이터(3a)로 유입되는 경우에는 상기 액냉매 유입 방지부재(6)를 타고 냉매 유입관(4a)과 흡입구(2)를 통해 밀폐 용기(1)의 내부로 유입되므로 인해 압축기의 이상 사고성 불량이 발생하게 되고, 상기 어큐뮬레이터(3a)의 내부에 액냉매 방지부재(6)를 설치해야 하므로 인해 조립 시간이 많이 소요되어 생산성이 떨어지게 되며, 제작 단가가 상승하게 되는 등의 많은 문제점이 있었다.However, in the upper part of the accumulator 3a installed on the side of the sealed container 1 of such a conventional hermetic rotary compressor, from the accumulator 3a to the inside of the sealed container 1 through the refrigerant inlet pipe 4a and the suction port 2. In order to prevent the liquid refrigerant from flowing in, a liquid refrigerant inflow preventing member 6 is provided to perform a normal function, and thus, the refrigerant inlet tube 4a and the suction port 2 of the sealed container 1 Although it is possible to block the liquid refrigerant from flowing into the inside, when a large amount of liquid refrigerant flows into the accumulator 3a during the initial startup of the compressor, the refrigerant flows through the liquid refrigerant inflow preventing member 6 and the refrigerant inlet pipe 4a. Due to the inlet (2) flows into the sealed container (1) due to the abnormal accident failure of the compressor occurs, because the liquid refrigerant prevention member (6) must be installed inside the accumulator (3a) due to the assembly time Are consuming and fall in productivity, there are many problems such as the production costs are increased.

따라서, 본 발명은 상기한 제반 문제점을 해결하기 위한 것으로서, 밀폐형 회전식 압축기의 초기 기동시 어큐뮬레이터로부터 밀폐 용기로 액체 냉매가 유입되는 현상을 단순한 구조로서 방지할 수 있도록 하여 압축기의 이상 사고성 불량 발생을 감소시킬 수 있는 밀폐형 회전식 압축기의 액냉매 유입 방지구조를 제공하는 데 그 목적이 있다.Accordingly, the present invention is to solve the above problems, it is possible to prevent the occurrence of abnormal accident failure of the compressor by a simple structure to prevent the phenomenon that the liquid refrigerant flows from the accumulator to the sealed container during the initial startup of the hermetic rotary compressor. It is an object of the present invention to provide a liquid refrigerant inflow preventing structure of a hermetic rotary compressor.

도 1은 종래의 밀폐형 회전식 압축기를 나타낸 종단면도1 is a longitudinal sectional view showing a conventional hermetic rotary compressor.

도 2는 본 발명에 따른 밀폐형 회전식 압축기를 나타낸 종단면도Figure 2 is a longitudinal cross-sectional view showing a hermetic rotary compressor according to the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1; 밀폐 용기 2; 흡입구One; Closed container 2; Inlet

3; 어큐뮬레이터 4; 냉매 유입관3; Accumulator 4; Refrigerant inlet pipe

5; 응축기 연결관 H; 높이차5; Condenser connector H; Height difference

상기한 목적을 달성하기 위해 본 발명은 밀폐 용기 내부의 흡입구와 상기 밀폐 용기의 측부에 설치된 어큐뮬레이터 상단의 사이에 어큐뮬레이터 내부의 액체 냉매가 밀폐 용기로 직접 유입되는 것을 방지하기 위해 높이차를 갖도록 냉매 유입관이 연통되어 설치되고, 상기 어큐뮬레이터에 연통되는 응축기 연결관은 어큐뮬레이터의 하단부를 관통하여 어큐뮬레이터 내의 상부에 위치하도록 설치된 것을 특징으로 하는 밀폐형 회전식 압축기의 액냉매 유입 방지구조가 제공되므로써 달성된다.In order to achieve the above object, the present invention provides a refrigerant inflow to have a height difference between the suction port inside the sealed container and the upper end of the accumulator installed on the side of the sealed container to prevent the liquid refrigerant inside the accumulator from directly flowing into the sealed container. The condenser connecting pipe communicating with the accumulator is installed in communication with the accumulator, and is provided by providing a liquid refrigerant inflow preventing structure of the hermetic rotary compressor, which is installed to penetrate the lower end of the accumulator.

이하, 상기한 목적을 달성하기 위한 본 발명의 바람직한 실시예를 첨부 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

도 2는 본 발명에 따른 밀폐형 회전식 압축기를 나타낸 종단면도로서, 종래의 기술과 동일한 부분에 대해서는 동일 부호를 부여하여 본 발명을 설명한다.Figure 2 is a longitudinal sectional view showing a hermetic rotary compressor according to the present invention, the same parts as in the prior art will be given the same reference numerals to explain the present invention.

본 발명은 밀폐형 회전식 압축기에 설치되는 밀폐 용기(1) 내부의 흡입구(2)와 상기 밀폐 용기(1)의 측부에 설치된 어큐뮬레이터(3) 상단의 사이에 어큐뮬레이터(3) 내부의 액체 냉매가 밀폐 용기(1)로 직접 유입되는 것을 방지하기 위해 높이차(H)를 갖도록 냉매 유입관(4)이 연통되어 설치되고, 상기 어큐뮬레이터(3)에 연통되는 응축기 연결관(5)은 상기 어큐뮬레이터(3)의 하단부를 관통하여 어큐뮬레이터(3) 내의 상부에 위치하도록 설치되어 구성된다.According to the present invention, a liquid refrigerant in the accumulator 3 is sealed between the inlet port 2 inside the sealed container 1 installed in the sealed rotary compressor and the upper end of the accumulator 3 installed on the side of the sealed container 1. The refrigerant inlet pipe 4 is installed in communication with the height in order to prevent the direct inflow into (1) (H), the condenser connecting pipe (5) communicating with the accumulator (3) is the accumulator (3) It is installed and configured to penetrate the lower end of the upper part in the accumulator (3).

상기와 같이 구성된 본 발명은 도 2에 도시한 바와 같이, 밀폐형 회전식 압축기에 설치되는 밀폐 용기(1) 내부의 흡입구(2)와 상기 밀폐 용기(1)의 측부에 설치된 어큐뮬레이터(3) 상단의 사이에 높이차(H)를 갖도록 냉매 유입관(4)이 연통되어 설치되고, 상기 어큐뮬레이터(3)에 연통되는 응축기 연결관(5)은 상기 어큐뮬레이터(3)의 하단부를 관통하여 어큐뮬레이터(3) 내부의 상부에 위치하도록 설치되어 있으므로 압축기의 초기 압축 과정중 또는 운전중에 상기 어큐뮬레이터(3) 내부의 액체 냉매가 냉매 유입관(4)과 흡입구(2)를 거쳐서 밀폐 용기(1)의 내부로 유일하려고 할 때 상기 밀폐 용기(1)의 하부와 어큐뮬레이터(3)의 상단 사이에 높이차(H)를 갖도록 냉매 유입관(4)이 연통 설치되어 있으므로 인해 상기 어큐뮬레이터(3)로부터 액체 냉매가 밀폐 용기(1)의 내부로 직접 유입되는 현상을 효율적으로 방지할 수 있게 된다.The present invention configured as described above, as shown in Figure 2, between the intake port (2) inside the sealed container (1) installed in the hermetic rotary compressor and the upper end of the accumulator (3) installed on the side of the sealed container (1) The refrigerant inlet pipe (4) is installed in communication with the height difference (H) in the condenser connecting pipe (5) communicated with the accumulator (3) passes through the lower end of the accumulator (3) inside the accumulator (3) Since the liquid refrigerant inside the accumulator 3 during the initial compression process or during the operation of the compressor is unique to the inside of the sealed container 1 through the refrigerant inlet pipe 4 and the inlet port 2, When the refrigerant inlet pipe (4) is communicated so as to have a height difference (H) between the lower portion of the sealed container (1) and the upper end of the accumulator (3), the liquid refrigerant from the accumulator (3) 1) of It is possible to effectively prevent the phenomenon flowing directly into the interior.

또한, 도 1과 같은 종래의 기술에서와 같이 상기 어큐뮬레이터(3a) 내의 상부에 액냉매 유입 방지부재(6)를 설치하지 않아도 되므로 인해 사용 부품이 감소됨에 따른 제작 단가를 절감시킬 수 있으며, 조립 시간의 단축에 의한 생산성을 증대시킬 수 있게 된다.In addition, since it is not necessary to install the liquid refrigerant inflow preventing member 6 in the upper portion of the accumulator 3a, as in the conventional art as shown in FIG. 1, the manufacturing cost can be reduced as the use parts are reduced, and the assembly time can be reduced. By shortening the productivity can be increased.

이상에서 상술한 바와 같이, 본 발명은 밀폐형 회전식 압축기의 초기 기동시 어큐뮬레이터로부터 밀폐 용기로 액체 냉매가 유입되는 현상을 단순한 구조로서 방지할 수 있으므로써 압축기의 이상 사고성 불량 발생을 감소시킬 수 있어서 압축기의 동작 성능 및 신뢰성을 향상시킬 수 있으며, 사용 부품의 감소에 따른 제작 단가의 절감 및 조립 시간의 단축에 의한 생산성을 증대시킬 수 있는 등의 많은 장점이 구비된 매우 유용한 발명이다.As described above, the present invention can prevent the occurrence of abnormal accidental failure of the compressor by preventing the flow of liquid refrigerant from the accumulator into the sealed container during the initial start-up of the hermetic rotary compressor as a simple structure. It is possible to improve the operation performance and reliability of the invention, it is a very useful invention with many advantages, such as to reduce the production cost according to the reduction of the use parts and to increase the productivity by shortening the assembly time.

이상에서는 본 발명의 바람직한 실시예를 도시하고 또한 설명하였으나, 본 발명은 상기한 실시예에 한정되지 않고, 이하 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술 분야에서 통상의 지식을 가진자라면 누구든지 다양한 변경 실시가 가능할 것이다.Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention may be commonly used in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone with knowledge will be able to make various changes.

Claims (1)

밀폐 용기 내부의 흡입구와 상기 밀폐 용기의 측부에 설치된 어큐뮬레이터 상단의 사이에 어큐뮬레이터 내부의 액체 냉매가 밀폐 용기로 직접 유입되는 것을 방지하기 위해 높이차를 갖도록 냉매 유입관이 연통되어 설치되고, 상기 어큐뮬레이터에 연통되는 응축기 연결관은 어큐뮬레이터의 하단부를 관통하여 어큐뮬레이터 내의 상부에 위치하도록 설치된 것을 특징으로 하는 밀폐형 회전식 압축기의 액냉매 유입 방지구조.A refrigerant inlet pipe is connected to the accumulator so as to have a height difference between the suction port inside the sealed container and the upper end of the accumulator installed on the side of the sealed container so as to prevent the liquid refrigerant inside the accumulator from flowing directly into the sealed container. The condenser connecting tube communicates with the liquid refrigerant inflow preventing structure of the hermetic rotary compressor, which is installed to penetrate the lower end of the accumulator.
KR1019980063555A 1998-12-31 1998-12-31 Liquid refrigerant inflow prevention structure of hermetic rotary compressor KR100311386B1 (en)

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