KR100300194B1 - Hermetic reciprocating compressor - Google Patents

Hermetic reciprocating compressor Download PDF

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Publication number
KR100300194B1
KR100300194B1 KR1019980007268A KR19980007268A KR100300194B1 KR 100300194 B1 KR100300194 B1 KR 100300194B1 KR 1019980007268 A KR1019980007268 A KR 1019980007268A KR 19980007268 A KR19980007268 A KR 19980007268A KR 100300194 B1 KR100300194 B1 KR 100300194B1
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KR
South Korea
Prior art keywords
piston
oil
cylinder
reciprocating compressor
casing
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KR1019980007268A
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Korean (ko)
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KR19990073969A (en
Inventor
조중창
Original Assignee
이충전
삼성광주전자 주식회사
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Priority to KR1019980007268A priority Critical patent/KR100300194B1/en
Publication of KR19990073969A publication Critical patent/KR19990073969A/en
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Publication of KR100300194B1 publication Critical patent/KR100300194B1/en

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Classifications

    • 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
    • F04B39/02—Lubrication
    • F04B39/0284—Constructional details, e.g. reservoirs in the casing
    • F04B39/0292—Lubrication of pistons or cylinders
    • 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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/0276—Lubrication characterised by the compressor type the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Abstract

PURPOSE: A hermetic reciprocating compressor is provided to lubricate between the outer periphery of a piston and an inner wall of a cylinder by guiding oil from an oil passage to the outer periphery of the piston and the inner wall of the cylinder with forming an oil guide part in a piston pin. CONSTITUTION: A hermetic reciprocating compressor comprises a casing; a stator(9) and a rotor(11) installed in the casing; a rotating shaft(13) inserted to the rotor with an eccentric part(15); a cylinder(23) installed in the casing to form refrigerant compression space; a piston(21) reciprocating in the cylinder; a connecting rod(19) inserted between the eccentric part and the piston with forming an oil passage along a shaft core; and a piston pin(27) combining the piston with the connecting rod. An oil guide part is formed in the piston pin, and connected to the oil passage to guide oil from the oil passage to the outer periphery of the piston and the inner wall of the piston. Lubrication is improved between the piston and the cylinder.

Description

밀폐형 왕복동식 압축기Hermetic reciprocating compressor

본 발명은, 밀폐형 왕복동식 압축기에 관한 것으로서, 보다 상세하게는, 피스톤의 외주면과 실린더의 내벽면 사이에 윤활성능을 향상시킬 수 있도록 한 밀폐형 왕복동식 압축기에 관한 것이다.The present invention relates to a hermetic reciprocating compressor, and more particularly, to a hermetic reciprocating compressor which can improve the lubricating performance between the outer peripheral surface of the piston and the inner wall surface of the cylinder.

냉장고등에 일반적으로 널리 사용되는 밀폐형 왕복동식 압축기는, 냉매흡입구와 냉매토출구가 형성되어 있는 케이싱내에 냉매를 압축하는 압축부와, 압축부에 구동력을 전달하는 구동모터와, 케이싱저부영역에는 오일을 수용할 수 있도록 오일수용부가 형성되어 있다.BACKGROUND ART Hermetic reciprocating compressors which are widely used in refrigerators and the like include a compression unit for compressing a refrigerant in a casing in which a refrigerant inlet port and a refrigerant outlet are formed, a drive motor for transmitting a driving force to the compression unit, and oil in the casing bottom region. The oil receiving part is formed so that it can

구동모터는 케이싱내에 설치되는 고정자와, 고정자내에 회전가능하도록 삽입된 회전자를 갖는다. 회전자에는 회전자의 축심에 압입되어 일체로 회전하는 회전축이 설치되어 있다.The drive motor has a stator installed in the casing and a rotor inserted rotatably in the stator. The rotor is provided with a rotating shaft which is pressed into the shaft center of the rotor and rotates integrally.

도 5는 종래의 밀폐형 왕복동식 압축기의 부분확대종단면도이다. 이 도면에 도시된 바와 같이, 회전축(113)의 하부영역에는 편심부(115)가 형성되어 있으며, 편심부(115)의 하단부에는 일측영역이 오일에 침지되어 있는 오일픽업튜브(117)가 마련되어 있다. 오일픽업튜브(117)는 회전축(113)과 일체로 회전함에 따라 오일을 급상시켜 운동하는 부품들에게 공급한다. 회전축(113)의 회전운동을 지지하기 위해서 회전축(113)의 외주영역에는 저어널베어링(137)이 설치되어 있다. 이들 회전축(113)과 저어널베어링(137) 사이에 윤활을 위해서 회전축(113)의 외주면에는 오일그루브(114)가 형성되어 있다.5 is a partially enlarged longitudinal sectional view of a conventional hermetic reciprocating compressor. As shown in the figure, an eccentric portion 115 is formed in the lower region of the rotation shaft 113, the oil pick-up tube 117 is provided at the lower end of the eccentric portion 115, one side region is immersed in oil. have. The oil pick-up tube 117 rotates integrally with the rotating shaft 113 and supplies oil to the moving parts. In order to support the rotational movement of the rotating shaft 113, the journal bearing 137 is provided in the outer peripheral area of the rotating shaft 113. An oil groove 114 is formed on the outer circumferential surface of the rotary shaft 113 for lubrication between the rotary shaft 113 and the journal bearing 137.

압축부(103)는 회전축(113)의 회전운동을 왕복운동으로 전환하는 커넥팅로드(119)와, 커넥팅로드(119)와 연결되어 왕복운동을 하는 피스톤(121)과, 피스톤(121)을 수용하여 냉매를 압축하는 공간을 형성하는 실린더(123)와, 실린더(123)의 일측단부면에 설치된 실린더헤드(125)가 설치되어 있다.The compression unit 103 accommodates the connecting rod 119 for converting the rotational movement of the rotary shaft 113 into reciprocating motion, the piston 121 connected to the connecting rod 119 for reciprocating motion, and the piston 121. The cylinder 123 is formed to form a space for compressing the refrigerant, and the cylinder head 125 provided on one end surface of the cylinder 123 is provided.

커넥팅로드(119)는 대경부(미도시)와 소경부(미도시)를 가지며, 대경부는 편심부(115)를 둘러싸도록 결합되며, 소경부는 피스톤(121)의 내코어(122)에 삽입되어 피스톤핀(127)에 의해 조립된다. 피스톤핀(127)은 멈춤핀(133)에 의해 피스톤(121)에 고정유지된다.The connecting rod 119 has a large diameter portion (not shown) and a small diameter portion (not shown), the large diameter portion is coupled to surround the eccentric portion 115, and the small diameter portion is inserted into the inner core 122 of the piston 121. It is assembled by the piston pin 127. The piston pin 127 is fixed to the piston 121 by the stop pin 133.

이러한 구성에 의하여, 압축기가 구동을 하게 되면, 회전축(113)의 회전에 의해 편심부(115)도 회전을 하게 되며 이때, 편심부(115)의 하단부에 설치된 오일픽업튜브(117) 또한 회전하게 되어 오일을 급상시킨다. 이렇게 급상된 오일중 일부는 회전축(113)의 외주면을 따라 형성된 오일그루브(114)를 통하여 상향이동하여 회전축(113)과 저어널베어링(137)과의 접촉부위에 윤활을 시켜주게 되며, 일부 오일은 편심부(115)에 마련된 오일공(139)을 통해 커넥팅로드(119)에 형성된 오일유로(141)를 따라 이동하게 된다. 이렇게 오일유로(141)를 따라 피스톤핀(127)까지 이동한 오일중 일부는 피스톤핀(127)과 커넥팅로드(119)와의 접촉부위에 공급되어 윤활기능을 수행하며, 나머지 일부는 피스톤핀(127)의 외주면에 함몰형성된 오일홈(131)을 따라 이동하여 커넥팅로드(119)의 단부까지 형성된 오일유로(141)를 통해 피스톤(121)의 내코어(122)로 이동한다.By such a configuration, when the compressor is driven, the eccentric portion 115 is also rotated by the rotation of the rotary shaft 113. At this time, the oil pickup tube 117 installed at the lower end of the eccentric portion 115 is also rotated. To sharpen the oil. Some of the oil so rapidly moved upward through the oil groove 114 formed along the outer circumferential surface of the rotary shaft 113 to lubricate the contact portion between the rotary shaft 113 and the journal bearing 137, and some oil The oil hole 139 provided in the eccentric portion 115 moves along the oil passage 141 formed in the connecting rod 119. Some of the oil moved to the piston pin 127 along the oil passage 141 is supplied to the contact portion between the piston pin 127 and the connecting rod 119 to perform a lubrication function, and the other part of the piston pin 127 Moving along the oil groove 131 recessed on the outer peripheral surface of the through the oil passage 141 formed to the end of the connecting rod 119 to the inner core 122 of the piston 121.

그런데, 이러한 종래의 밀폐형 왕복동식 압축기에 있어서는, 피스톤의 외주면과 실린더의 내벽면사이에 윤활을 위한 오일의 공급량이 적어 피스톤이 실린더내에서 왕복운동할 때, 이상소음이 발생할 수 있으며 압축성능을 저해할 수도 있는 문제점이 있다.However, in such a conventional hermetic reciprocating compressor, the amount of oil supplied for lubrication is small between the outer circumferential surface of the piston and the inner wall surface of the cylinder, and when the piston reciprocates in the cylinder, abnormal noise may occur and the compression performance is impaired. There is a problem that can be done.

따라서, 본 발명의 목적은, 피스톤의 외주면과 실린더 내벽면사이에 윤활성능을 향상시킨 밀폐형 왕복동식 압축기를 제공하는 것이다.Accordingly, it is an object of the present invention to provide a hermetic reciprocating compressor having improved lubricating performance between the outer circumferential surface of a piston and the inner wall surface of a cylinder.

도 1은 본 발명에 따른 밀폐형 왕복동식 압축기의 종단면도,1 is a longitudinal sectional view of a hermetic reciprocating compressor according to the present invention;

도 2는 도 1의 부분 확대종단면도,2 is a partially enlarged longitudinal sectional view of FIG. 1;

도 3은 도 2의 I-I선에 따른 부분단면도.3 is a partial cross-sectional view taken along line II of FIG. 2.

도 4는 도 3의 피스톤핀의 확대사시도,Figure 4 is an enlarged perspective view of the piston pin of Figure 3,

도 5는 종래의 밀폐형 왕복동식 압축기의 부분확대종단면도이다.5 is a partially enlarged longitudinal sectional view of a conventional hermetic reciprocating compressor.

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

9 : 고정자 11 : 회전자9: stator 11: rotor

13 : 회전축 15 : 편심부13: rotating shaft 15: eccentric portion

17 : 오일픽업튜브 19 : 커넥팅로드17: oil pick-up tube 19: connecting rod

21 : 피스톤 23 : 실린더21: piston 23: cylinder

27 : 피스톤핀 29 : 절취면27: piston pin 29: cutting surface

31 : 오일홈 39 : 오일공31: oil groove 39: oil ball

41 : 오일유로41: oil euro

상기 목적은, 본 발명에 따라, 케이싱과, 상기 케이싱내에 설치되는 고정자 및 회전자와, 상기 회전자에 삽입되며 편심부가 형성된 회전축과, 상기 케이싱내에 설치되어 냉매를 압축하는 공간을 형성하는 실린더와, 상기 실린더에 수용되어 왕복운동하는 피스톤과, 상기 편심부와 상기 피스톤사이에 개재되며 축심을 따라 오일유로가 형성되어 있는 커넥팅로드와, 상기 피스톤을 상기 커넥팅로드에 결합시키는 피스톤핀을 갖는 밀폐형 왕복동식 압축기에 있어서, 상기 피스톤핀에는 상기 오일유로와 연통되며 상기 피스톤의 외주면과 상기 실린더의 내벽면 사이에 오일을 공급하는 오일안내부가 형성되어 있는 것을 특징으로 하는 밀폐형 왕복동식 압축기에 의해 달성된다.According to the present invention, there is provided a casing, a stator and a rotor installed in the casing, a rotating shaft inserted into the rotor and having an eccentric portion, and a cylinder installed in the casing to form a space for compressing a refrigerant; And a hermetic reciprocating piston including a piston accommodated in the cylinder and reciprocating, a connecting rod interposed between the eccentric portion and the piston and having an oil flow path formed along an axial center, and a piston pin coupling the piston to the connecting rod. In the same type compressor, the piston pin is achieved by a hermetic reciprocating compressor, which is in communication with the oil passage and is provided with an oil guide portion for supplying oil between the outer peripheral surface of the piston and the inner wall surface of the cylinder.

여기서, 상기 오일안내부는 상기 피스톤핀의 외주면에 축심과 평행하도록 절취형성되어 있는 것을 특징으로 하는 밀폐형 왕복동식 압축기.Here, the oil guide portion is a hermetic reciprocating compressor, characterized in that formed on the outer peripheral surface of the piston pin to be cut parallel to the axis.

이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 밀폐형 왕복동식 압축기의 종단면도이고, 도 2는 도 1의 압축부의 확대종단면도이며, 도 3은 도 2의 I-I선에 따른 부분단면도이고, 도 4는 도 3의 피스톤핀의 확대사시도이다. 이들 도면에 도시된 바와 같이, 본 발명에 따른 밀폐형 왕복동식 압축기는, 종래의 압축기와 마찬가지로, 냉매흡입구와 냉매토출구가 형성되어 있는 케이싱(1)내에 냉매를 압축하는 압축부(3)와, 압축부(3)에 구동력을 전달하는 구동모터(5)와, 케이싱(1)의 저부영역에 마련되어 케이싱(1)내에서 운동하는 부품들의 윤활을 위해 오일이 수용되어 있는 오일수용부(7)를 갖는다.1 is a longitudinal sectional view of a hermetic reciprocating compressor according to the present invention, FIG. 2 is an enlarged longitudinal sectional view of the compression unit of FIG. 1, FIG. 3 is a partial sectional view along line II of FIG. 2, and FIG. 4 is a piston of FIG. 3. An enlarged perspective view of a pin. As shown in these drawings, the hermetic reciprocating compressor according to the present invention, like the conventional compressor, has a compression section 3 for compressing the refrigerant in the casing 1 in which the refrigerant suction port and the refrigerant discharge port are formed. A drive motor 5 for transmitting a driving force to the part 3 and an oil receiving part 7 provided in the bottom region of the casing 1 and containing oil for lubricating parts moving in the casing 1; Have

구동모터(5)는 케이싱(1)내에 설치되는 고정자(9)와, 고정자(9)내에 회전가능하도록 삽입된 회전자(11)를 갖는다. 회전자(11)에는 회전자(11)의 축심에 압입되어 일체로 회전하는 회전축(13)이 설치되어 있다. 회전축(13)의 외측면에는 오일그루브(14)가 형성되어 있으며, 하부영역에는 편심부(15)가 형성되어 있다. 이 편심부(15)의 하단부에는 오일수용부(7)로부터 오일을 운동하는 부품으로 공급하는 오일픽업튜브(17)가 소정경사되게 설치되어 있다.The drive motor 5 has a stator 9 installed in the casing 1 and a rotor 11 rotatably inserted in the stator 9. The rotor 11 is provided with a rotating shaft 13 that is pressed into the shaft center of the rotor 11 and rotates integrally. An oil groove 14 is formed on an outer surface of the rotation shaft 13, and an eccentric portion 15 is formed in a lower region. At the lower end of the eccentric portion 15, an oil pick-up tube 17 for supplying oil from the oil receiving portion 7 to the moving parts is provided at a predetermined slope.

압축부(3)는 회전축(13)의 편심부(15)와 결합되어 회전축(13)의 회전운동을 왕복운동으로 전환하는 커넥팅로드(19)와, 커넥팅로드(19)와 결합되어 왕복운동을 하는 피스톤(21)과, 왕복운동하는 피스톤(21)을 수용하여 냉매를 압축하는 공간을 형성하는 실린더(23)와, 실린더(23)의 일측단부에 설치되어 실린더(23)로 공급되는 냉매와 토출되는 냉매를 단속하는 도시하지 않은 밸브가 마련된 실린더헤드(25)를 갖는다.The compression unit 3 is coupled to the eccentric portion 15 of the rotary shaft 13, the connecting rod 19 for converting the rotational movement of the rotary shaft 13 to the reciprocating motion, and the connecting rod 19 is coupled to the reciprocating motion A cylinder (21) for accommodating the piston (21), a piston (21) for reciprocating motion, and a space for compressing the refrigerant, and a refrigerant provided at one end of the cylinder (23) and supplied to the cylinder (23); It has the cylinder head 25 provided with the valve which is not shown which interrupts | releases the refrigerant | coolant discharged.

커넥팅로드(19)는 도시하지 않은 대경부와 소경부를 가지며, 대경부는 편심부(15)를 둘러싸도록 결합되며, 소경부는 피스톤(21)의 내코어(22)에 삽입된다.The connecting rod 19 has a large diameter portion and a small diameter portion (not shown), the large diameter portion is coupled to surround the eccentric portion 15, and the small diameter portion is inserted into the inner core 22 of the piston 21.

한편, 커넥팅로드(19)와 피스톤(21)은 피스톤핀(27)에 의해서 결합된다. 피스톤핀(27)에는 축심에서 피스톤핀(27)의 외주면을 향해 소정 이격되어 축심과 평행한 절취면(29)이 형성되어 있으며, 피스톤핀(27)의 중앙영역에는 외주면을 따라 함몰된 오일홈(31)이 형성되어 있다. 또한, 피스톤핀(27)이 커넥팅로드(19)와 피스톤(21)과 결합된 상태로 고정유지되도록 멈춤핀(33)이 삽입되는 멈춤키수용공(35)이 형성되어 있다.On the other hand, the connecting rod 19 and the piston 21 is coupled by a piston pin (27). The piston pin 27 is provided with a cutting surface 29 parallel to the shaft core and spaced apart from the shaft core toward the outer circumferential surface of the piston pin 27, and an oil groove recessed along the outer circumferential surface in the central region of the piston pin 27. (31) is formed. In addition, a stop key receiving hole 35 into which the stop pin 33 is inserted is formed so that the piston pin 27 is fixedly coupled to the connecting rod 19 and the piston 21.

이상과 같은 구성에 의하여, 압축기가 구동을 하게 되면, 회전축(13)과 회전축(13)에 형성된 편심부(15)가 회전을 하게 되며 이때, 편심부(15)의 하단부에 설치된 오일픽업튜브(17)가 회전을 하며 오일을 급상시킨다. 이렇게 상향급송된 오일중 일부는 회전축(13)의 오일그루브(14)를 통하여 이동하여 회전축(13)과 저어널베어링(37)과의 마찰부위에 공급되어 윤활기능을 수행한다. 또한 일부 오일은 편심부(15)의 내부에 마련된 오일공(39)을 통해 커넥팅로드(19)의 내부에 형성된 오일유로(41)를 따라 피스톤핀(27)까지 이동한다. 피스톤핀(27)까지 이동한 오일중 일부는 피스톤핀(27)의 오일홈(31)에 의해 피스톤핀(27)과 커넥팅로드(19)와의 마찰부위에 오일을 공급하여 윤활을 하게 되며, 일부는 피스톤핀(27)의 절취면(29)을 통해 피스톤(21)의 외주면과 실린더(23)의 내벽면 사이에 오일을 공급된다.By the above-described configuration, when the compressor is driven, the eccentric portion 15 formed on the rotary shaft 13 and the rotary shaft 13 rotates, and at this time, the oil pick-up tube installed at the lower end of the eccentric portion 15 ( 17) rotates and fills the oil. Some of the upwardly conveyed oil moves through the oil groove 14 of the rotating shaft 13 and is supplied to the friction portion between the rotating shaft 13 and the journal bearing 37 to perform a lubrication function. In addition, some oil is moved to the piston pin 27 along the oil passage 41 formed in the connecting rod 19 through the oil hole 39 provided in the eccentric portion 15. Some of the oil moved to the piston pin 27 is lubricated by supplying oil to the friction part between the piston pin 27 and the connecting rod 19 by the oil groove 31 of the piston pin 27. The oil is supplied between the outer circumferential surface of the piston 21 and the inner wall surface of the cylinder 23 through the cutting surface 29 of the piston pin 27.

이와 같이, 피스톤핀에 커넥팅로드내에 형성된 오일유로와 연통되며, 오일유로로부터의 오일을 피스톤의 외주면과 상기 실린더의 내벽면 사이로 안내하는 오일안내부를 마련함으로써, 피스톤의 외주면과 실린더 내벽면 사이에 윤활성능을 향상시킬 수 있다.In this way, the piston pin communicates with the oil flow path formed in the connecting rod, and provides an oil guide portion for guiding oil from the oil flow path between the outer circumferential surface of the piston and the inner wall surface of the cylinder, thereby lubricating between the outer circumferential surface of the piston and the cylinder inner wall surface. It can improve performance.

이상에서 설명한 바와 같이, 본 발명에 따르면, 피스톤의 외주면과 실린더의 내벽면 사이에 윤활성능을 향상시킨 밀폐형 왕복동식 압축기가 제공된다.As described above, according to the present invention, there is provided a hermetic reciprocating compressor having improved lubricating performance between the outer peripheral surface of the piston and the inner wall surface of the cylinder.

Claims (2)

케이싱과, 상기 케이싱내에 설치되는 고정자 및 회전자와, 상기 회전자에 삽입되며 편심부가 형성된 회전축과, 상기 케이싱내에 설치되어 냉매를 압축하는 공간을 형성하는 실린더와, 상기 실린더내에 수용되어 왕복운동하는 피스톤과, 상기 편심부와 상기 피스톤사이에 개재되며 축심을 따라 오일유로가 형성되어 있는 커넥팅로드와, 상기 피스톤을 상기 커넥팅로드에 결합시키는 피스톤핀을 갖는 밀폐형 왕복동식 압축기에 있어서,A casing, a stator and a rotor installed in the casing, a rotation shaft inserted into the rotor and having an eccentric portion, a cylinder installed in the casing to form a space for compressing a refrigerant, and received and reciprocated in the cylinder. In a hermetic reciprocating compressor having a piston, a connecting rod interposed between the eccentric portion and the piston and having an oil flow path formed along an axis, and a piston pin for coupling the piston to the connecting rod. 상기 피스톤핀에는 상기 오일유로와 연통되며 상기 오일유로로부터의 오일을 상기 피스톤의 외주면과 상기 실린더의 내벽면 사이로 안내하는 오일안내부가 형성되어 있는 것을 특징으로 하는 밀폐형 왕복동식 압축기.The piston pin is hermetic reciprocating compressor, characterized in that the oil passage is in communication with the oil passage and guides the oil from the oil passage between the outer peripheral surface of the piston and the inner wall surface of the cylinder. 제 1항에 있어서,The method of claim 1, 상기 오일안내부는 상기 피스톤핀의 외주면에 축심과 평행하도록 절취형성되어 있는 것을 특징으로 하는 밀폐형 왕복동식 압축기.The oil guide part is a hermetic reciprocating compressor, characterized in that formed on the outer peripheral surface of the piston pin parallel to the axis.
KR1019980007268A 1998-03-05 1998-03-05 Hermetic reciprocating compressor KR100300194B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100871129B1 (en) * 2002-10-31 2008-12-03 엘지전자 주식회사 Oil supplying structure of connectingrod in hermetic compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100871129B1 (en) * 2002-10-31 2008-12-03 엘지전자 주식회사 Oil supplying structure of connectingrod in hermetic compressor

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