KR19990019706A - Compressor suction valve breakage prevention structure - Google Patents

Compressor suction valve breakage prevention structure Download PDF

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Publication number
KR19990019706A
KR19990019706A KR1019970043116A KR19970043116A KR19990019706A KR 19990019706 A KR19990019706 A KR 19990019706A KR 1019970043116 A KR1019970043116 A KR 1019970043116A KR 19970043116 A KR19970043116 A KR 19970043116A KR 19990019706 A KR19990019706 A KR 19990019706A
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KR
South Korea
Prior art keywords
piston
intake valve
valve
compressor
prevention structure
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KR1019970043116A
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Korean (ko)
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KR100226416B1 (en
Inventor
홍명중
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윤종용
삼성전자 주식회사
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Priority to KR1019970043116A priority Critical patent/KR100226416B1/en
Publication of KR19990019706A publication Critical patent/KR19990019706A/en
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Publication of KR100226416B1 publication Critical patent/KR100226416B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

본 발명은 피스톤형 압축기에서 피스톤과 흡입 밸브의 접촉에 따른 파손을 방지할수 있는 압축기의 흡입 밸브 파손 방지 구조에 관한 것으로서, 피스톤과 흡입 밸브의 접촉에 따른 흡입 밸브의 파손을 방지할 수 있는 압축기의 흡입 밸브 파손 방지구조를 제공함에 있다.The present invention relates to an intake valve breakage prevention structure of a compressor that can prevent damage caused by contact between a piston and an intake valve in a piston type compressor, and a compressor capable of preventing damage to an intake valve caused by a contact between a piston and an intake valve. The inlet valve breakage prevention structure is provided.

상기한 목적을 실현하기 위하여 본 발명은 흡입 밸브(61)와 피스톤(57)의 사이에 위치됨과 아울러 피스톤(57)과 흡입 밸브(61) 접촉 시 탄성 접촉되어 충격을 완충하도록 구성된 완충 수단을 설치하여 구성함을 특징으로 한다.In order to realize the above object, the present invention is provided between the intake valve 61 and the piston 57, and is provided with a cushioning means configured to cushion the impact by elastic contact when the piston 57 and the intake valve 61 are in contact It is characterized by the configuration.

Description

압축기의 흡입 밸브 파손 방지 구조Compressor suction valve breakage prevention structure

본 발명은 파손 방지 구조에 관한 것으로서, 보다 상세하게는 피스톤형 압축기에서 피스톤과 흡입 밸브의 접촉에 따른 파손을 방지할 수 있는 압축기의 흡입 밸브 파손 방지 구조에 관한 것이다.The present invention relates to a breakage preventing structure, and more particularly, to a suction valve breakage preventing structure of a compressor capable of preventing breakage due to contact of a piston and a suction valve in a piston type compressor.

일반적으로, 압축기는 유체를 가압하여 유체의 압력, 온도 등을 소정 목적에 적합하도록 변경시키는 장치인 바, 이는 동작 형태에 따라 로터리형, 피스톤형, 스크롤형등으로 구분된다.In general, a compressor is a device that pressurizes a fluid to change the pressure, temperature, and the like of the fluid to suit a predetermined purpose. The compressor is classified into a rotary type, a piston type, and a scroll type according to an operation type.

상기한 피스톤형 압축기는 도 3에 도시된 바와 같이 하우징(50)과, 상기한 하우징(50) 내부에 고정 설치된 스테이터(51)와, 상기한 스테이터(51)에 삽입되고 회전되는 로우터(52)와, 상기한 로우터(52)에 압입됨과 아울러 일단에 편심축(53)이 형성된 크랭크 측(54)과, 상기한 편심축(53)이 일단에 삽입됨과 아울러 실린더 블록(55)의 보어(56)에서 슬라이딩 운동하는 피스톤(57)이 타단에 삽입되는 컨넥팅 로드(58)와, 상기한 실린더 블록(55)과 밸브 어셈블리(59)를 개재한 상태로 결합된 실린더 헤드(60)로 구성되어 있다.As shown in FIG. 3, the piston-type compressor includes a housing 50, a stator 51 fixedly installed in the housing 50, and a rotor 52 inserted into and rotated in the stator 51. The crank side 54 is press-fitted into the rotor 52 and an eccentric shaft 53 is formed at one end thereof, and the eccentric shaft 53 is inserted at one end thereof and the bore 56 of the cylinder block 55 is inserted therein. It consists of a connecting rod 58 is inserted into the other end of the piston (57) sliding in the) and the cylinder head (60) coupled via the cylinder block 55 and the valve assembly (59) have.

상기한 밸브 어셈블리는(59)는 유체의 흡입 및 배출을 제어하게 되는 바, 이는 도 4에 도시된 바와 같이 실린더 블록(55)과 밀착됨과 아울러 흡입 밸브(61)가 형성된흡입 플레이트(62)와, 상기한 흡입 플레이트(62)에 밀착됨과 아울러 흡입공, 배출공(63,64)이 형성되어 있는 밸브 플레이트(65)와, 상기한 밸브 플레이트(65)에 순차적으로 결합된 배출 밸브(66), 스토퍼(67), 키퍼 플레이트(68)와, 상기한 밸브 플레이트(65)의 상면에 결합되는 실린더 헤드(60)로 구성되어 있다.The valve assembly 59 controls the suction and discharge of the fluid, which is in close contact with the cylinder block 55 as shown in FIG. 4 and the suction plate 62 having the suction valve 61. In addition, the valve plate 65 in close contact with the suction plate 62 and the suction and discharge holes 63 and 64 are formed, and the discharge valve 66 sequentially coupled to the valve plate 65. And a stopper 67, a keeper plate 68, and a cylinder head 60 engaged with the upper surface of the valve plate 65.

물론, 상기한 흡입공(63)은 흡입 플레이트(62)에 형성된 흡입 밸브(61)에 의해 간헐 제한되고, 배출공(64)은 상기한 배출 밸브(66)에 의해 간헐 제한된다.Of course, the suction hole 63 is intermittently limited by the suction valve 61 formed in the suction plate 62, and the discharge hole 64 is intermittently limited by the discharge valve 66 described above.

상기한 압축기의 동작을 설명하면 상기한 스테이터(51)와 로우터(52)의 자계에 의해 로우터(52)가 회전되면 여기에 고정된 크랭크 축(54)이 회전하게 된다.Referring to the operation of the compressor described above, when the rotor 52 is rotated by the magnetic fields of the stator 51 and the rotor 52, the crank shaft 54 fixed thereto is rotated.

크랭크 축(54)이 회전하게 되면 컨넥팅 로드(58) 및 피스톤(57)이 왕복 운동하게되는 바, 상기한 피스톤(57)의 왕복 운동에 의해 밸브 플레이트(60)의 흡입공(63)으로 유체가 흡입된다.When the crankshaft 54 rotates, the connecting rod 58 and the piston 57 reciprocate, and the suction hole 63 of the valve plate 60 is caused by the reciprocating movement of the piston 57. Fluid is aspirated.

즉, 도 5에 도시된 바와 같이 흡입공(63)으로 유입된 유체는 피스톤(57)이 하사점에 위치될 때의 부압에 의해 흡입 밸브(61)가 개방되는 순간 실린더 보어(56)로 유입되고, 다시 피스톤(57)이 상사점으로 이동하게 되면 흡입 밸브(61)가 닫히게 됨과아울러 배출 밸브(66)가 개방되면서 실린더 헤드(60)로 배출된다.That is, as shown in FIG. 5, the fluid introduced into the suction hole 63 flows into the cylinder bore 56 at the moment when the suction valve 61 is opened by the negative pressure when the piston 57 is located at the bottom dead center. When the piston 57 moves to the top dead center again, the intake valve 61 is closed, and the discharge valve 66 is opened while being discharged to the cylinder head 60.

즉, 상기한 피스톤(57)이 상사점과 하사점을 왕복 운동할 때의 부압에 의해 흡입밸브(61)가 개폐되면서 유체를 흡입하게 되는 것이다.That is, the intake valve 61 is opened and closed by the negative pressure when the piston 57 reciprocates between the top dead center and the bottom dead center to inhale the fluid.

그러나, 상기한 바와 같이 피스톤의 부압에 의해 흡입 밸브를 개폐시킬 때 상기한 피스톤과 흡입 밸브가 접촉하게 되고, 상기한 접촉에 의해 판상인 흡입 밸브가 마모됨과 아울러 마모 진행 시 파손되는 문제점이 있다.However, as described above, when the intake valve is opened and closed by the negative pressure of the piston, the piston and the intake valve come into contact with each other, and the plate-shaped intake valve is worn by the above contact, and there is a problem in that the wear progresses.

따라서, 본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로서, 피스톤과 흡입 밸브의 접촉에 따른 흡입 밸브의 파손을 방지할 수 있는 압축기의 흡입 밸브 파손 방지 구조를 제공함에 있다.Accordingly, an object of the present invention is to provide a suction valve breakage prevention structure of a compressor which can prevent breakage of the suction valve due to contact between the piston and the suction valve.

상기한 목적을 실현하기 위하여 본 발명은 흡입 밸브와 피스톤의 사이에 위치됨과 아울러 피스톤과 흡입 밸브 접촉 시 탄성 접촉되어 충격을 완충하도록 구성된 완충수단을 설치하여 구성함을 특징으로 한다.In order to realize the above object, the present invention is characterized in that it is installed between the intake valve and the piston, and also provided with a shock absorbing means configured to cushion the shock when the piston and the intake valve contact.

도 1은 본 발명에 따른 압축기의 흡입 밸브 파손 방지 구조를 도시한 단면도,1 is a cross-sectional view showing the intake valve breakage prevention structure of the compressor according to the present invention;

도 2는 도 1에서 피스톤과 완충 수단을 도시한 분해 사시도,2 is an exploded perspective view of the piston and the shock absorbing means in FIG.

도 3은 일반적인 피스톤형 압축기를 도시한 단면도,3 is a cross-sectional view showing a typical piston compressor,

도 4는 도 3에서 밸브 어셈블리와 실린더 헤드 그리고 실린더 블록 결합 상태를 도시한 분해 사시도,4 is an exploded perspective view illustrating a valve assembly, a cylinder head, and a cylinder block coupled state in FIG. 3;

도 5는 도 4에서 피스톤과 흡입 밸브의 접촉 상태를 도시한 단면도.5 is a cross-sectional view showing a contact state between the piston and the suction valve in FIG.

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

1 : 안착홈 2 : 스프링1: Seating groove 2: Spring

3 : 테이프부 4 : 고정 부재3: tape portion 4: fixing member

57 : 피스톤 61 : 흡입 밸브57: piston 61: intake valve

도 1은 본 발명에 따른 압축기의 흡입 밸브 파손 방지 구조를 도시한 피스톤과 밸브 플레이트의 단면도로서, 흡입 밸브(61)와 접촉되는 피스톤(57) 선단에 위치됨과 아울러 흡입 밸브(61)에 탄성 접촉되어 충격을 완충하도록 완충 수단이 설치되어 있다.1 is a cross-sectional view of the piston and the valve plate showing the intake valve breakage prevention structure of the compressor according to the present invention, which is positioned at the tip of the piston 57 in contact with the intake valve 61 and elastically contacts the intake valve 61. The shock absorber is provided to cushion the shock.

즉, 상기한 완충 수단이 피스톤(57)과 흡입 밸브(61)의 직접 충돌을 방지함과 아울러 흡입 밸브(61)에 탄성을 인가함으로서 흡입 밸브(61)의 파손 및 마모를 방지하게 되는 것이다.That is, the above-mentioned shock absorbing means prevents direct collision between the piston 57 and the intake valve 61, and also applies elasticity to the intake valve 61, thereby preventing damage and wear of the intake valve 61.

상기한 완충 수단은 피스톤(57)의 선단에 일정 깊이로 형성된 안착홈(1)과, 상기한 안착홈(1)에 삽입됨과 아울러 피스톤(57)의 선단에서 일정 높이 돌출되는 스프링(2)과, 상기한 스프링(2)을 안착홈(1)에 고정시키는 고정 수단으로 구성되어 있다. 상기한 고정 수단은 안착홈(1)에 삽입되면서 스프링(2) 저면을 고정함과 아울러 상면에 안착홈(1)과의 이격 거리가 멀어지도록 테이퍼부(3)가 형성되고 피스톤(57)의 상면으로 돌출되지 않도록 높이가 형성된 원통형의 고정 부재(4)로 구성되어 있다. 즉, 상기한 안착홈(1)에 스프링(2)을 끼운 상태에서 상기한 고정 부재(4)를 삽입시키게 되면 상기한 고정 부재(4)와 안착홈(1)에 사이에 스프링(2) 저면에 압입 고정되고, 상면은 테이퍼부(3)에 의해 고정되지 않게 됨으로써 스프링(2)의 상면만 탄성 운동하게 되는 것이다.The shock absorbing means includes a seating groove 1 formed at a predetermined depth at the tip of the piston 57, a spring 2 inserted into the seating groove 1 and protruding a predetermined height from the tip of the piston 57. It is composed of a fixing means for fixing the spring (2) to the seating groove (1). The fixing means is fixed to the bottom surface of the spring (2) while being inserted into the seating groove (1) and the tapered portion (3) is formed so that the distance from the seating groove (1) on the upper surface is formed and the piston 57 It is comprised by the cylindrical fixing member 4 in which the height was formed so that it might not protrude on the upper surface. That is, when the fixing member 4 is inserted in the state in which the spring 2 is inserted into the mounting groove 1, the bottom surface of the spring 2 is disposed between the fixing member 4 and the mounting groove 1. The upper surface is not fixed by the tapered portion 3 so that only the upper surface of the spring 2 is elastically moved.

상기한 바와 같은 본 발명의 작용 효과를 설명하면 압축기의 동작에 따라 크랭크 축(54)이 회전되면서 이와 컨넥팅 로드(58)로 연결된 피스톤(57)을 보어(56) 내부에서 왕복 운동시키게 된다.Referring to the operation and effect of the present invention as described above, the crank shaft 54 is rotated according to the operation of the compressor to reciprocate the inside of the bore 56, the piston 57 connected to the connecting rod 58.

피스톤(57)이 왕복 운동하게 되면 유체가 흡입되고, 상기한 피스톤(57)의 왕복 운동에 의해 흡입 밸브(61)가 개폐 동작하게 된다.When the piston 57 reciprocates, fluid is sucked in, and the suction valve 61 is opened and closed by the reciprocating motion of the piston 57.

즉, 피스톤(57)이 상사점에서 하사점으로 이동하게 되면 상기한 흡입 밸브(61)가 부압에 의해 개방되는 바, 상기한 개방 시 압축된 유체가 배출 밸브(66)를 통과함과 아울러 흡입 밸브(61)가 열리면서 새로운 유체가 흡입된다.That is, when the piston 57 is moved from the top dead center to the bottom dead center, the intake valve 61 is opened by the negative pressure, so that the compressed fluid passes through the discharge valve 66 and is sucked at the time of opening. The valve 61 is opened and fresh fluid is sucked in.

새로운 유체가 흡입된 후 피스톤(57)이 하사점에서 상사점으로 이동하게 되면 흡입밸브(61)가 닫히면서 유체가 압축된다.When the piston 57 moves from the bottom dead center to the top dead center after the new fluid is sucked in, the suction valve 61 is closed and the fluid is compressed.

이때, 상기한 피스톤(57)의 선단과 흡입 밸브(61) 사이에서는 충돌이 발생되는 바, 상기한 충돌 시 흡입 밸브(61)의 종단은 피스톤(57)의 선단으로 돌출되어 있는 스프링(2)과 충돌하게 된다.At this time, a collision occurs between the front end of the piston 57 and the intake valve 61, the end of the intake valve 61 during the collision is a spring (2) protruding to the front end of the piston (57) Will collide with

스프링(2)과 흡입 밸브(61)가 충돌하게 되면 상기한 스프링(2)이 압축되면서 충돌에 따른 충격을 완충시키게 된다.When the spring 2 and the intake valve 61 collides, the spring 2 is compressed to cushion the impact caused by the collision.

즉, 상기한 스프링(2)의 상면은 피스톤(57)의 상면으로 일정 거리 돌출된 상태에서 탄성 운동 가능하기 때문에 상기한 흡입 밸브(61)가 충돌할 때 압축되면서 충격을 흡수하게 되는 것이다.That is, the upper surface of the spring (2) is elastically movable in a state of protruding a predetermined distance to the upper surface of the piston (57) is to absorb the shock while being compressed when the intake valve 61 collides.

흡입 밸브(61)가 스프링(2)과 충돌하게 되면 상기한 피스톤(57)의 왕복 운동 시 흡입 밸브(61)와의 사이에서 발생되는 충격이 대폭 감소하게 되고, 상기한 흡입 밸브(61)의 마모 및 이로 인한 파손이 방지되는 것이다.When the intake valve 61 collides with the spring 2, the impact generated between the intake valve 61 during the reciprocation of the piston 57 is greatly reduced, the wear of the intake valve 61 And damage caused by this.

물론, 상기한 피스톤(57)의 왕복 운동 시 관성에 의해 스프링(2)이 안착홈(1)에서 이탈되려고 하지만 상기한 스프링(2)은 저면이 안착홈(1)과 고정 부재(4)에 의해 고정되어 있기 때문에 안정적인 동작을 하게 된다.Of course, when the reciprocating motion of the piston 57, the spring (2) is to be released from the seating groove (1) due to inertia, but the bottom surface of the spring (2) to the seating groove 1 and the fixing member (4) Because it is fixed by this, stable operation is achieved.

여기서, 상기한 고정 부재(4)는 피스톤(57)의 상면으로 돌출되지 않게 됨으로써 흡입 밸브(61)와 충돌하지 않게 된다.Here, the fixing member 4 does not protrude to the upper surface of the piston 57 so that it does not collide with the intake valve 61.

이상과 같이 본 발명은 피스톤에 완충 수단을 설치함으로써 피스톤의 왕복 운동에 따른 흡입 밸브의 마모 및 파손을 방지하여 압축기의 수명을 증대시킬 수 있는 잇점이 있는 것이다.As described above, the present invention has an advantage of increasing the service life of the compressor by preventing abrasion and breakage of the suction valve due to the reciprocating motion of the piston by providing a cushioning means to the piston.

Claims (3)

흡입 밸브와 피스톤의 사이에 위치됨과 아울러 피스톤과 흡입 밸브 접촉 시 탄성 접촉되어 충격을 완충하도록 구성된 완충 수단을 설치하여 구성함을 특징으로 하는 압축기의 흡입 밸브 파손 방지 구조.And a cushioning means positioned between the intake valve and the piston and elastically contacted when the piston and the intake valve are contacted to cushion the shock. 제 1항에 있어서, 상기한 완충 수단은 피스톤의 선단에 일정 깊이로 형성된 안착홈과, 상기한 안착홈에 삽임됨과 아울러 피스톤의 선단에서 일정 높이 돌출되는 스프링과, 상기한 스프링을 안착홈에 고정시키는 고정 수단으로 구성함을 특징으로 하는 압축기의 홉입 밸브 파손 방지 구조.According to claim 1, wherein the buffer means is a seating groove formed in a predetermined depth at the front end of the piston, the spring is inserted into the seating groove and protrudes a predetermined height from the front end of the piston, and the spring fixed to the seating groove Compression valve breakage prevention structure of the compressor, characterized in that consisting of a fixing means to. 제 2항에 있어서, 상기한 고정 수단은 안착홈에 삽입되면서 스프링 저면을 고정함과 아울러 상면에 안착홈과의 이격 거리가 멀어지도록 테이퍼부가 형성되고 피스톤의 상면으로 돌출되지 않도록 높이가 형성된 원통형의 고정 부재로 구성함을 특징으로하는 압축기의 흡입 밸브 파손 방지 구조.According to claim 2, wherein the fixing means is inserted into the seating groove while fixing the bottom surface of the spring and the tapered portion is formed so that the separation distance from the seating groove on the upper surface of the cylindrical formed with a height so as not to project to the upper surface of the piston Intake valve breakage prevention structure of the compressor, characterized by consisting of a fixing member.
KR1019970043116A 1997-08-29 1997-08-29 Suction valve failure prevention mechanism KR100226416B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010096179A (en) * 2000-04-17 2001-11-07 이충전 Noise Decrease Device of Exhaust Valve in a Sealed Type Compressor
KR100455193B1 (en) * 2002-05-06 2004-11-06 엘지전자 주식회사 Device for reducing noise of reciprocating compressor
KR100621029B1 (en) * 2005-06-30 2006-09-08 엘지전자 주식회사 Device for protecting remove of buffer spring in reciprocating compressor
KR100690906B1 (en) * 2005-06-30 2007-03-09 엘지전자 주식회사 Device for protecting remove of buffer spring in reciprocating compressor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100966941B1 (en) * 2002-12-13 2010-06-30 엘지전자 주식회사 chip prevention apparatus for cap

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010096179A (en) * 2000-04-17 2001-11-07 이충전 Noise Decrease Device of Exhaust Valve in a Sealed Type Compressor
KR100455193B1 (en) * 2002-05-06 2004-11-06 엘지전자 주식회사 Device for reducing noise of reciprocating compressor
KR100621029B1 (en) * 2005-06-30 2006-09-08 엘지전자 주식회사 Device for protecting remove of buffer spring in reciprocating compressor
KR100690906B1 (en) * 2005-06-30 2007-03-09 엘지전자 주식회사 Device for protecting remove of buffer spring in reciprocating compressor

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