KR19980013884A - Lubrication structure of sealed reciprocating compressor - Google Patents

Lubrication structure of sealed reciprocating compressor Download PDF

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Publication number
KR19980013884A
KR19980013884A KR1019960032580A KR19960032580A KR19980013884A KR 19980013884 A KR19980013884 A KR 19980013884A KR 1019960032580 A KR1019960032580 A KR 1019960032580A KR 19960032580 A KR19960032580 A KR 19960032580A KR 19980013884 A KR19980013884 A KR 19980013884A
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KR
South Korea
Prior art keywords
oil
piston
oil pump
cylinder
reciprocating compressor
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Application number
KR1019960032580A
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Korean (ko)
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KR100195944B1 (en
Inventor
오원식
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구자홍
엘지전자 주식회사
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Priority to KR1019960032580A priority Critical patent/KR100195944B1/en
Priority to CN97115076A priority patent/CN1100207C/en
Priority to JP9210605A priority patent/JPH1082366A/en
Priority to US08/905,944 priority patent/US5941346A/en
Publication of KR19980013884A publication Critical patent/KR19980013884A/en
Application granted granted Critical
Publication of KR100195944B1 publication Critical patent/KR100195944B1/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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0261—Hermetic compressors with an auxiliary oil pump
    • 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
    • F04B39/023—Hermetic compressors
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • 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
    • F04B39/023—Hermetic compressors
    • F04B39/0269—Hermetic compressors with device for spraying lubricant or with mist lubrication
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

밀폐용기내 압축기구부와 상기 압축기구부를 구동하는 전동기구부가 설치되고, 상기 양기구부를 크랭크축으로 연결하고, 상기 축의 상부에 일체로 편심부가 형성된 밀폐형 왕복동식 압축기에 있어서, 상기 크랭크축의 편심부의 회전운동에 의해 작동하는 오일펌프를 구비하여 상기 밀폐용기의 하부쉘의 오일을 펌핑하여 소정의 윤활부에 오일을 공급하는 밀폐형 왕복동식 압축기의 급유구조There is provided a hermetically sealed reciprocating compressor provided with a compression mechanism in a hermetic container and a transmission mechanism for driving the compression mechanism, wherein the both mechanisms are connected by a crankshaft and integrally formed with an eccentric portion on the shaft, An oil lubrication system for an airtight reciprocating compressor, comprising an oil pump operated by a motion, for supplying oil to a predetermined lubrication part by pumping oil from a lower shell of the hermetically sealed container

Description

밀폐형 왕복동식 압축기의 급유구조Lubrication structure of sealed reciprocating compressor

제1도는 종래의 밀폐형 왕복동식 압축기의 전체 구성도FIG. 1 is an overall configuration diagram of a conventional closed reciprocating compressor

제2도는 본 발명에 따른 밀폐형 왕복동식 압축기의 전체 구성도FIG. 2 is an overall schematic view of a closed reciprocating compressor according to the present invention; FIG.

제3도는 본 발명에 따른 밀폐형 왕복동식 압축기의 다른 실시예의 전체 구성도3 is an overall schematic view of another embodiment of the hermetic reciprocating compressor according to the present invention

제4도는 본 발명에 따른 밀폐형 왕복동식 압축기의 급유구조의 구성도FIG. 4 is a structural view of a lubricating structure of a closed reciprocating compressor according to the present invention;

* 도면의 주요 부분의 부호의 설명Description of Reference Numerals in Major Parts of the Drawings

2 : 실린더3 : 피스톤2: cylinder 3: piston

5 : 프레임6 : 크랭크축5: Frame 6: Crankshaft

6a : 편심부21 : 스프링6a: eccentric portion 21: spring

23 : 피스톤24 : 실린더23: Piston 24: Cylinder

25 : 밸브28 : 흡입파이프25: valve 28: suction pipe

29 : 토출파이프29: Discharge pipe

본 발명은 밀폐형 왕복동식 압축기의 급유구조에 관한 것으로, 특히 크랭크축의 편심부에 의해 구동되는 오일펌프를 설치하여 윤활부에 오일을 충분히 공급할 수 있도록 한 밀폐형 왕복동식 압축기의 급유구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating structure of a reciprocating compressor of a hermetic type, and more particularly, to an oil lubrication structure of a reciprocating compressor of a hermetic type which is capable of supplying oil to a lubricating portion by providing an oil pump driven by an eccentric portion of a crankshaft.

종래의 밀폐형 전동압축기는 제1도에 도시된 바와 같이, 밀폐용기의 상부쉘(1)에 압축기구부(2,3)을, 하부쉘(9)에 상기 압축기구부를 구동하는 전동기구부(7,8)를 설치하고, 상기 2 기구부를 크랭크축(6)으로 연결하고, 상기 크랭크축의 축방향으로 오일상승유로를 형성하여 축의 회전에 동반하는 원심펌프의 작용에 의해 밀폐케이스내부에 모여진 윤활유를 베어링부 또는 압축기구부에 공급하고 있다.1, the conventional closed type motor-driven compressor includes compression mechanisms 2 and 3 in the upper shell 1 of the hermetically sealed container and transmission mechanisms 7 and 8 in the lower shell 9 for driving the compression mechanism, 8), the two mechanical parts are connected by a crankshaft (6), an oil rising passage is formed in the axial direction of the crankshaft, and lubricating oil accumulated in the closed casing by the action of a centrifugal pump, Or a compression mechanism.

상기 전동기구부는 프레임(5)에 볼트로 체결되어 전원이 인가되면 자력을 발생하는 고정자(8)와, 상기 프레임(5)의 중앙에 삽입되어 회전하는 크랭크축(6)과, 상기 고정자(8)의 자력에 의해 회전하는 회전자(4)로 구성된다.The transmission mechanism includes a stator 8 that is bolted to the frame 5 and generates magnetic force when power is applied thereto, a crankshaft 6 that is inserted and rotated in the center of the frame 5, And a rotor 4 rotated by the magnetic force of the rotor 4.

상기 압축기구부는 상기 축(6)의 상부에 편심되어 일체로 형성된 편심부(6a)와, 상기 편심부(6a)의 외주에 축(6)의 회전운동을 왕복운동으로 바꾸어 주는 슬라이더(13)와, 상기 슬라이더(14)가 삽입된 상태로 설치되어 실린더(2)내에서 왕복운동하는 피스톤(3)과, 상기 피스톤(3)이 왕복운동을 할 수 있도록 프레임(5)상에 볼트로 체결되어 있는 실린더(7)와, 흡입되는 냉매가스의 누설을 방지하는 헤드(12)와, 실린더(7)를 덮고 있는 헤드카바(4)로 구성된다.The compression mechanism includes an eccentric portion 6a formed integrally with the upper portion of the shaft 6 and integrally formed with the upper portion of the shaft 6. A slider 13 is disposed on the outer circumference of the eccentric portion 6a to convert the rotary motion of the shaft 6 into a reciprocating motion. A piston 3 installed in the state where the slider 14 is inserted and reciprocating in the cylinder 2 and a piston 3 fastened with a bolt on the frame 5 so that the piston 3 reciprocates A head 12 for preventing leakage of the refrigerant gas to be sucked, and a head cover 4 covering the cylinder 7. The cylinder 7 is provided with a cylinder 7,

전원이 인가되면 고정자(8)와 회전자(7)사이에 유도전류가 발생하여 회전자(7)가 회전하게 되고, 회전자(7)의 회전에 따라 회전자(7)에 압입된 크랭크축(6)이 회전하며 축(6) 상부에 형성된 편심부(6a)의 외주에 형성되어 있는 슬라이더(14)는 축(6)의 회전운동을 왕복운동으로 바꿔 주어 피스톤(3)은 실린더(2)내를 왕복운동한다.An induced current is generated between the stator 8 and the rotor 7 to turn the rotor 7. When the rotor 7 is rotated, The slider 14 formed on the outer periphery of the eccentric portion 6a formed on the upper portion of the shaft 6 as the piston 6 rotates converts the rotational motion of the shaft 6 into the reciprocating motion, ).

한편, 하부쉘(9)의 하부에 저장된 오일(10)은 급유 프로펠러(11)의 회전력에 의해 크랭크축(6)의 급유홈을 따라 상승하여 피스톤(3)과 실린더(2)에 분사되며 여분의 오일은 상부쉘(1)에 분사된다.The oil 10 stored in the lower portion of the lower shell 9 rises along the oil supply groove of the crankshaft 6 by the rotational force of the oil supply propeller 11 and is injected into the piston 3 and the cylinder 2, Is injected into the upper shell (1).

이러한 종래의 밀폐형 왕복동식 압축기의 급유구조에서는 급유 프로펠러(11)의 회전력에 의하여 크랭크축(6)의 오일홈을 따라 상승하여 크랭크축(6)의 끝단에서 분사되어 떨어지는 오일량에 의해서만 윤활이 이루어지기 때문에, 피스톤(3)과 실린더(2)의 오일공급이 불충분하다는 문제점과, 또한 가변속 압축기의 경우처럼 저속으로 운전되는 경우에는 회전력이 약하게 때문에 하부쉘(9)의 하면에 고여 있는 오일을 크랭크축의 오일홈으로 펌핑할 수 없기 때문에 베어링부를 비롯한 그 이후 모든 윤활부위에 오일을 공급할 수 없다는 문제점이 있었다.In the conventional lubricating structure of the reciprocating compressor of the closed type, the lubricating oil is lubricated only by the amount of oil that rises along the oil groove of the crankshaft 6 due to the rotational force of the oil supply propeller 11 and is sprayed from the end of the crankshaft 6 The oil supplied to the piston 3 and the cylinder 2 is inadequate and when the oil is operated at a low speed as in the case of the variable speed compressor, There is a problem in that oil can not be supplied to the bearing portion and all subsequent lubricating portions since the oil can not be pumped to the oil groove of the shaft.

본 발명은 이러한 종래기술의 문제점을 해결하기 위한 것으로, 크랭크축의 편심부에 의해 구동되는 오일펌프를 설치하여 윤활부에 오일을 충분히 공급할 수 있는 밀폐형왕복 동식 압축기의 급유구조의 제공을 목적으로 한다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a lubrication structure of a closed reciprocating compressor capable of sufficiently supplying oil to a lubricating portion by providing an oil pump driven by an eccentric portion of a crankshaft.

상기 목적을 달성하기 위하여, 본 발명의 밀폐형 왕복동식 압축기의 급유구조는, 밀폐용기 내 압축기구부와 상기 압축기구부를 구동하는 전동기구부가 설치되고, 상기 양 기구부를 크랭크축으로 연결하고, 상기 축의 상부에 일체로 편심부가 형성된 밀폐형 왕복동식 압축기에 있어서, 상기 크랭크축의 편심부의 회전운동에 의해 작동하는 오일펌프를 구비하여 상기 밀폐용기의 하부쉘의 오일을 펌핑하여 소정의 윤활부에 오일을 공급하는 것을 특징으로 한다.In order to achieve the above-mentioned object, a refueling structure of a closed reciprocating compressor according to the present invention is characterized in that a compression mechanism in an airtight container and a transmission mechanism for driving the compression mechanism are provided, the both mechanisms are connected by a crank shaft, Wherein the oil pump is operated by rotational movement of the eccentric portion of the crankshaft to pump the oil in the lower shell of the hermetically sealed container to supply oil to the predetermined lubrication portion .

이하, 첨부 도면에 의거하여 본 발명의 밀폐형 왕복동식 압축기의 급유구조를 상세히 설명한다.Hereinafter, a refueling structure of the closed reciprocating compressor of the present invention will be described in detail with reference to the accompanying drawings.

제2도 내지 제4도는 본 발명의 밀폐형 왕복동식 압축기의 급유구조를 나타낸 것으로, 크랭크샤프트(6)의 상부에 연결되어 있는 편심부(6a)에 오일을 펌핑하기 위한 오일펌핑피스톤(23)이 연결되고 오일펌프피스톤(23)은 오일펌프실린더(24)의 내부에서 왕복운동한다. 오일펌프실린더(24)의 상부에는 오일흡입밸브(25), 오일흡입밸브시트(26)와 오일흡입헤드카바(27)가 장착된다. 오일흡입헤드카바(27)에는 하부쉘(9)의 하부에 저장된 오일(10)에 일단이 연통된 오일흡입파이프(28)의 타단이 연결된다.2 to 4 illustrate an oil supply structure of a closed reciprocating compressor according to the present invention. An oil pumping piston 23 for pumping oil to an eccentric portion 6a connected to an upper portion of a crankshaft 6 And the oil pump piston 23 reciprocates inside the oil pump cylinder 24. An oil suction valve 25, an oil suction valve seat 26 and an oil suction head cover 27 are mounted on the upper portion of the oil pump cylinder 24. The other end of the oil suction pipe 28, one end of which is connected to the oil 10 stored in the lower portion of the lower shell 9, is connected to the oil suction head cover 27.

오일토출파이프(29)는 일단이 오일펌프실린더(24)의 벽면에 연통되고, 타단은 집중적으로 급유가 필요한 부위에 예를들면, 피스톤(3)에 연결되거나(제2도의 경우), 베어링부(15)에 연결되어(제3도의 경우), 오일을 공급하도록 한다.The oil discharge pipe 29 is connected to the piston 3 at a position where one end is communicated with the wall surface of the oil pump cylinder 24 and the other end is intensively lubricated, (In the case of FIG. 3) to supply the oil.

오일펌프실린더(24)내에는 상기 오일펌프피스톤(23)에 하향력을 가하는 압축스프링(21)이 설치되어 편심부(6a)의 운동에 의해 오일펌프피스톤(23)이 하사점으로 이동할 수 있게 한다.A compression spring 21 for applying a downward force to the oil pump piston 23 is provided in the oil pump cylinder 24 so that the oil pump piston 23 can be moved to the bottom dead point by the movement of the eccentric portion 6a do.

이하, 본 발명의 밀폐형 왕복동식 압축기의 급유구조의 작용을 설명한다.The operation of the lubricating structure of the closed reciprocating compressor of the present invention will be described below.

먼저, 크랭크축(6)의 편심부(6a)가 회전운동을 하면 편심부에 얹혀있는 오일펌프피스톤(23)은 하향운동하면서 하사점으로 이동할 때 오일흡입밸브(25)가 개방되고 하부쉘에 저장된 오일(10)이 압력차에 의해 오일흡입파이프(28)를 통해 오일펌프실린더(24) 내부로 유입된다. 편심부의 계속되는 회전운동에 의해 오일펌프피스톤(23)이 상사점으로 이동하면 오일펌프실린더(24)내로 유입된 오일은 오일토출파이프(29)를 통해 피스톤이나 베어링부에 집중 급유된다.First, when the eccentric portion 6a of the crankshaft 6 rotates, the oil pump piston 23 resting on the eccentric portion moves downward while moving to the bottom dead center, the oil suction valve 25 is opened, The stored oil 10 flows into the oil pump cylinder 24 through the oil suction pipe 28 by a pressure difference. When the oil pump piston 23 moves to the top dead center due to the continuous rotation of the eccentric portion, the oil introduced into the oil pump cylinder 24 is concentratedly supplied to the piston or the bearing portion through the oil discharge pipe 29.

이상, 설명한 바와 같이, 본 발명에 따르면, 크랭크축의 편심부에 의해 구동되는 오일펌프를 설치하여 하부쉘의 하면에 저장된 오일을 윤활부에 충분히 공급할 수 있는 효과가 있다.As described above, according to the present invention, the oil pump driven by the eccentric portion of the crankshaft is provided, and the oil stored in the lower surface of the lower shell can be sufficiently supplied to the lubricating portion.

Claims (5)

밀폐용기내 압축기구부와 상기 압축기구부를 구동하는 전동기구부가 설치되고, 상기 양 기구부를 크랭크축으로 연결하고, 상기 축의 상부에 일체로 편심부가 형성된 밀폐형 왕복동식 압축기에 있어서,In a closed reciprocating compressor in which a compression mechanism in an airtight container and a transmission mechanism for driving the compression mechanism are provided, the both mechanical parts are connected by a crank shaft, and an eccentric part is integrally formed on the shaft, 상기 크랭크축의 편심부의 회전운동에 의해 작동하는 오일펌프를 구비하여 상기 밀폐용기의 하부쉘의 오일을 펌핑하여 소정의 윤활부에 오일을 공급하는 것을 특징으로 하는 밀폐형 왕복동식 압축기의 급유구조And an oil pump that operates by rotational movement of the eccentric portion of the crankshaft to pump the oil in the lower shell of the hermetically sealed container to supply oil to the predetermined lubricating portion. 제1항에 있어서,The method according to claim 1, 상기 오일펌프는, 상기 편심부의 회전운동에 연동하여 왕복운동하는 피스톤과, 그 내부에서 상기 피스톤이 왕복운동하는 실린더와, 피스톤의 왕복운동에 의해 발생된 압력차에 의해 하부쉘의 저장오일을 실린더내로 유도하는 흡입파이프와, 피스톤의 왕복운동에 의해 발생된 압력차에 의해 상기 흡입파이프의 유로를 개폐하는 밸브와, 피스톤의 왕복운동에 의해 발생된 압력차에 의해 실린더 내로 유입된 오일을 소정의 윤활부로 공급하는 토출파이프를 구비한 것을 특징으로 하는 밀폐형 왕복동식 압축기의 급유구조The oil pump includes a piston reciprocating in conjunction with a rotational motion of the eccentric portion, a cylinder reciprocating the piston in the piston, and a pressure difference generated by a reciprocating motion of the piston, A valve that opens and closes the flow path of the suction pipe by a pressure difference generated by the reciprocating motion of the piston, and a valve that opens and closes the oil introduced into the cylinder by a pressure difference generated by the reciprocating motion of the piston, And a discharge pipe for supplying the lubricating oil to the lubricating portion. 상기 토출파이프의 토출단이 피스톤측으로 연장된 것을 특징으로 하는 밀폐형 왕복동식 압축기의 급유구조And the discharge end of the discharge pipe extends toward the piston. 제2항에 있어서,3. The method of claim 2, 상기 토출파이프의 토출단이 베어링측으로 연장된 것을 특징으로 하는 밀폐형 왕복동식 압축기의 급유구조And the discharge end of the discharge pipe extends toward the bearing. 제2항에 있어서,3. The method of claim 2, 상기 오일펌프실린더 내에는 상기 오일펌프피스톤에 하사점으로 향하는 탄성력을 가하는 탄성수단이 설치된 것을 특징으로 하는 밀폐형 왕복동식 압축기의 급유구조And an elastic means for applying an elastic force to the bottom dead center of the oil pump piston is provided in the oil pump cylinder.
KR1019960032580A 1996-08-05 1996-08-05 Oil feeding structure df closed type reciprocating compressor KR100195944B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019960032580A KR100195944B1 (en) 1996-08-05 1996-08-05 Oil feeding structure df closed type reciprocating compressor
CN97115076A CN1100207C (en) 1996-08-05 1997-08-04 Lubricant structure of closed-type transmission compressor
JP9210605A JPH1082366A (en) 1996-08-05 1997-08-05 Oil supply structure of hermetic motor driven compressor
US08/905,944 US5941346A (en) 1996-08-05 1997-08-05 Lubricant structure of closed-type transmission compressor

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR100469454B1 (en) * 2001-12-26 2005-02-02 엘지전자 주식회사 Apparatus for supplying oil of opposed type receprocating compressor

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Publication number Priority date Publication date Assignee Title
KR101973677B1 (en) * 2017-09-28 2019-08-26 엘지전자 주식회사 A Lubricant Oil Provider and a Compressor Using the Same
KR102001335B1 (en) * 2018-01-19 2019-07-17 엘지전자 주식회사 A Lubricant Oil Provider and a Compressor Using the Same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100469454B1 (en) * 2001-12-26 2005-02-02 엘지전자 주식회사 Apparatus for supplying oil of opposed type receprocating compressor

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