KR20030050301A - Lubricating system for connecting rod of compressor - Google Patents
Lubricating system for connecting rod of compressor Download PDFInfo
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- KR20030050301A KR20030050301A KR1020010080712A KR20010080712A KR20030050301A KR 20030050301 A KR20030050301 A KR 20030050301A KR 1020010080712 A KR1020010080712 A KR 1020010080712A KR 20010080712 A KR20010080712 A KR 20010080712A KR 20030050301 A KR20030050301 A KR 20030050301A
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- South Korea
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- connecting rod
- oil
- small diameter
- piston pin
- compressor
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Classifications
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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
- F04B39/0094—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 crankshaft
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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
- F04B39/0005—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
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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
- F04B39/0238—Hermetic compressors with oil distribution channels
- F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
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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
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
- F04B39/0292—Lubrication of pistons or cylinders
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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
- F04B39/14—Provisions for readily assembling or disassembling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
개시된 본 발명에 의한 압축기의 커넥팅로드 윤활구조는, 커넥팅로드의 내부에 길이방향으로 관통 형성되어 커넥팅로드의 소경부와 피스톤핀 사이의 마찰습동면으로 윤활유를 공급하는 오일유로를 구비하는 압축기의 커넥팅로드 윤활구조에 있어서, 상기 소경부의 내주면과 상기 피스톤핀의 외주면 중 적어도 어느 한 면에 윤활유가 잔류할 수 있는 다수의 미세홈으로 이루어지는 오일뱅크가 형성된 것을 특징으로 한다. 이에 의하면, 오일뱅크에 잔류하는 윤활유에 의해, 윤활유가 공급되지 않는 압축기의 운전 초기에도 커넥팅로드 소경부와 피스톤핀 사이의 마찰습동면에서의 마모를 감소시킬 수 있는 효과가 있다.Connecting rod lubrication structure of the compressor according to the present invention, the connecting rod is formed in the longitudinal direction of the connecting rod having a oil passage for supplying lubricating oil to the friction sliding surface between the small diameter portion of the connecting rod and the piston pin In the rod lubrication structure, characterized in that the oil bank is formed of a plurality of fine grooves in which lubricating oil can remain on at least one of the inner peripheral surface of the small diameter portion and the outer peripheral surface of the piston pin. According to this, the lubricating oil remaining in the oil bank can reduce the wear on the friction sliding surface between the connecting rod small diameter portion and the piston pin even at the beginning of operation of the compressor to which the lubricating oil is not supplied.
Description
본 발명은 밀폐형 왕복동식 압축기에 관한 것이며, 보다 상세하게는 압축기의 커넥팅로드 소경부와 피스톤핀 사이의 마찰습동면에서의 마모를 줄이기 위한 압축기의 커넥팅로드 윤활구조에 관한 것이다.The present invention relates to a hermetic reciprocating compressor, and more particularly, to a connecting rod lubrication structure of a compressor for reducing wear at the friction sliding surface between the connecting rod small diameter portion and the piston pin of the compressor.
도 1은 일반적인 왕복동식 압축기를 나타낸 단면도로서, 도 1에 도시된 바와 같이, 일반적인 왕복동식 압축기는 전동기구부의 회전운동을 크랭크기구를 이용하여 압축기구부의 왕복직선운동으로 변환시켜 냉매를 압축하도록 구성된다. 따라서, 구성부품간의 마찰습동부가 존재하게 된다. 이러한 압축기의 마찰습동부는 도 1에 도시된 바와 같이, 크랭크기구를 구성하는 크랭크축(1)의 편심부(2)와 커넥팅로드(3)의 대경부(4) 사이, 크랭크축(1)과 베어링(5) 사이, 커넥팅로드(3)의 소경부(6)와 피스톤핀(7) 사이, 그리고, 실린더블록(8)의 보어 내면과 피스톤(9) 사이 등이 있다. 압축기의 운전시 상기한 마찰습동부에서는 부재간의 마찰에 의한 고열이 발생함과 아울러 심한 마모가 발생하므로, 이 부분에 대한 윤활이 필요하며, 특히, 커넥팅로드(3)의 소경부(6)와 피스톤핀(7) 사이의 마찰습동면은 피스톤(9)의 압축력에 의한 부하가 크게 작용하는 부분으로 윤활유 공급을 위한 특별한 구조가 채용된다. 도 1에서 미설명 부호 10은 밀폐용기, 11 및 12는 전동기구부를 구성하는 회전자 및 고정자이다.1 is a cross-sectional view showing a general reciprocating compressor, as shown in Figure 1, a general reciprocating compressor is configured to compress the refrigerant by converting the rotational movement of the electric mechanism to the reciprocating linear motion of the compression mechanism unit using a crank mechanism. do. Thus, friction sliding portions between the components exist. As shown in FIG. 1, the friction sliding part of the compressor includes the crank shaft 1 between the eccentric portion 2 of the crank shaft 1 constituting the crank mechanism and the large diameter portion 4 of the connecting rod 3. And between the bearing 5, between the small diameter portion 6 of the connecting rod 3 and the piston pin 7, and between the bore inner surface of the cylinder block 8 and the piston 9. Since the friction sliding part generates high heat due to friction between the members and severe abrasion during operation of the compressor, lubrication of this part is necessary, and in particular, the small diameter part 6 of the connecting rod 3 and The friction sliding surface between the piston pins 7 is a portion in which a load by the compressive force of the piston 9 acts greatly, and a special structure for lubricating oil supply is adopted. In FIG. 1, reference numeral 10 denotes a hermetically sealed container, and 11 and 12 denote rotors and stators constituting the electric mechanism part.
도 2는 도 1에 나타낸 압축기의 커넥팅로드 윤활구조 및 이 윤활구조에 의한 윤활작용을 설명하기 위한 발췌 단면도이다.FIG. 2 is an excerpt sectional view for explaining the connecting rod lubrication structure of the compressor shown in FIG.
도 2에 도시된 바와 같이, 종래 커넥팅로드의 윤활구조는 오일픽업튜브(20)로 흡입된 윤활유가 소경부(6)로 이동하는 오일유로(24)와, 피스톤핀(7)의 외주면 둘레로 상기 오일유로(24)와 연통되도록 형성된 오일홈(26)을 구비한다.As shown in FIG. 2, the lubrication structure of the conventional connecting rod has an oil passage 24 through which the lubricating oil sucked into the oil pick-up tube 20 moves to the small diameter part 6, and around the outer circumferential surface of the piston pin 7. An oil groove 26 formed to communicate with the oil passage 24 is provided.
상기 오일픽업튜브(20)는 크랭크축(1)의 편심부(2)에 연결되며, 이 오일픽업튜브(20)의 회전에 의한 원심력으로 밀폐용기(10; 도 1참조)의 저부에 저장된 윤활유가 흡입되어 커넥팅로드의 소경부(6)로 공급된다. 상기 편심부(2)에는 상기 오일픽업튜브(10)와 연통하는 메인오일유로(21)가 편심부(2)의 축방향으로 관통 형성된다.The oil pick-up tube 20 is connected to the eccentric portion 2 of the crankshaft 1, and the lubricating oil stored at the bottom of the sealed container 10 (see FIG. 1) by centrifugal force by the rotation of the oil pick-up tube 20. Is sucked and supplied to the small diameter part 6 of the connecting rod. The eccentric portion 2 is formed with a main oil passage 21 communicating with the oil pick-up tube 10 in the axial direction of the eccentric portion 2.
상기 오일유로(24)는 상기 커넥팅로드(3)의 내부에 상기 편심부(2)의 오일그루브(22)와 연통하도록 형성되며, 이 오일유로(24)를 통해 커넥팅로드(3)의 소경부(6)에 윤활유가 공급된다.The oil passage 24 is formed to communicate with the oil groove 22 of the eccentric portion 2 in the connecting rod 3, and the small diameter portion of the connecting rod 3 through the oil passage 24. Lubricating oil is supplied to (6).
상기 피스톤핀(7)에 형성된 오일홈(26)은 상기 오일유로(24)와 연통되며, 상기 오일유로(24)를 통해 공급된 윤활유가 상기 소경부(6)와 상기 피스톤핀(7) 사이의 마찰습동면에 골고루 공급된다.The oil groove 26 formed in the piston pin 7 communicates with the oil channel 24, and the lubricating oil supplied through the oil channel 24 is between the small diameter part 6 and the piston pin 7. It is evenly supplied to the friction sliding surface of
상기와 같은 종래의 커넥팅로드 소경부의 윤활구조에 의하면, 압축기가 구동하여 오일픽업튜브(20)가 회전하면 밀폐용기(10)의 저부에 저장된 윤활유가 메인오일유로(21)를 따라 유동하는데, 여기서 윤활유의 일부가 크랭크축(1)의 편심부(2)에 형성된 오일그루브(22)와 이 오일그루브(22)와 연통된 커넥팅로드(3)의 오일유로(24)를 통해 커넥팅로드(3)의 소경부(6)로 공급된다. 소경부(6)로 공급된 윤활유는 피스톤핀(7)에 형성된 오일홈(26)을 따라 유동하면서 소경부(6)와 피스톤핀(7) 사이의 마찰습동면을 윤활한다.According to the conventional lubrication structure of the connecting rod small diameter, when the compressor is driven and the oil pick-up tube 20 rotates, the lubricating oil stored at the bottom of the sealed container 10 flows along the main oil flow path 21. Here, a part of the lubricating oil is connected via the oil groove 22 formed in the eccentric portion 2 of the crankshaft 1 and the oil passage 24 of the connecting rod 3 in communication with the oil groove 22. It is supplied to the small diameter part 6 of). The lubricating oil supplied to the small diameter part 6 lubricates the friction sliding surface between the small diameter part 6 and the piston pin 7 while flowing along the oil groove 26 formed in the piston pin 7.
그러나, 상기한 바와 같은 종래 밀폐형 왕복동식 압축기의 윤활구조에 있어서, 압축기가 정지되면, 오일픽업튜브(20)에 의해 흡입되는 윤활유는 마찰습동부로의 유동을 멈추고, 커넥팅로드(3) 소경부(6)로 공급된 윤활유는 윤활유 공급의 역방향으로 유동하여 밀폐용기(10)의 저부로 유입되어 커넥팅로드(3)와 피스톤핀(7) 사이의 마찰습동면에는 윤활유가 부족하게 된다.However, in the lubrication structure of the conventional hermetic reciprocating compressor as described above, when the compressor is stopped, the lubricating oil sucked by the oil pick-up tube 20 stops the flow to the friction sliding part, and the connecting rod 3 small diameter part The lubricating oil supplied to (6) flows in the reverse direction of the lubricating oil supply and flows into the bottom of the hermetic container 10 so that the lubricating oil is insufficient in the friction sliding surface between the connecting rod 3 and the piston pin 7.
한편, 압축기가 재운전되어 크랭크축(1)이 회전하면, 커넥팅로드(3) 소경부(6)와 피스톤핀(7) 사이에 윤활유가 재차 공급되기 전까지 커넥팅로드(3) 소경부(6)와 피스톤핀(7)은 무유급 상태로 습동하기 때문에 마찰에 의한 심한 마모가 발생된다.On the other hand, when the compressor is restarted and the crankshaft (1) rotates, the connecting rod (3) small diameter part (6) until the lubricant is supplied again between the connecting rod (3) small diameter part (6) and the piston pin (7). And the piston pin (7) because it slides in a non-paid state is a severe wear caused by friction.
본 발명은 상기와 같은 문제를 감안하여 안출한 것으로, 압축기의 초기 운전시에 커넥팅로드 소경부와 피스톤핀 사이의 습동면에서 발생되는 마모를 줄이기 위해 커넥팅로드의 소경부와 피스톤핀 사이에 윤활유가 잔류할 수 있도록, 그 구조가 개선된 압축기의 커넥팅로드 윤활구조를 제공하는데 그 목적이 있다.The present invention has been made in view of the above problems, in order to reduce the wear occurring in the sliding surface between the connecting rod small diameter portion and the piston pin during the initial operation of the compressor between the small diameter portion of the connecting rod and the piston pin It is an object of the present invention to provide a connecting rod lubrication structure of a compressor whose structure is improved so that it can remain.
도 1은 일반적인 밀폐형 왕복동식 압축기의 구조를 나타낸 단면도,1 is a cross-sectional view showing the structure of a general hermetic reciprocating compressor;
도 2는 도 1에 나타낸 압축기의 커넥팅로드 윤활구조 및 이 윤활구조에 의한 윤활작용을 설명하기 위한 발췌 단면도,FIG. 2 is a cross-sectional view illustrating the connecting rod lubrication structure of the compressor shown in FIG. 1 and the lubrication action by the lubrication structure.
도 3은 본 발명에 의한 커넥팅로드의 윤활구조 및 이 윤활구조에 의한 윤활작용을 설명하기 위한 발췌 단면도, 그리고,3 is a cross-sectional view for explaining the lubrication structure of the connecting rod and the lubrication action by the lubrication structure according to the present invention, and
도 4는 도 3의 커넥팅로드를 도시한 단면도이다.4 is a cross-sectional view illustrating the connecting rod of FIG. 3.
< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>
1;크랭크축2;편심부1; crankshaft 2; eccentric portion
3;커넥팅로드6;소경부3; connecting rod 6; small diameter part
7;피스톤핀20;오일픽업튜브7; piston pin 20; oil pick up tube
22;오일그루브24;오일유로22; oil groove 24; oil euro
26;오일홈28;오일뱅크26; oil groove 28; oil bank
28a;미세홈28a; fine groove
상기 목적을 달성하기 위한 본 발명에 의한 압축기의 커넥팅로드 윤활구조는, 커넥팅로드의 내부에 길이방향으로 관통 형성되어 커넥팅로드의 소경부와 피스톤핀 사이의 마찰습동면으로 윤활유를 공급하는 오일유로를 구비하는 압축기의 커넥팅로드 윤활구조에 있어서, 상기 소경부의 내주면과 상기 피스톤핀의 외주면 중 적어도 어느 한 면에 윤활유가 잔류할 수 있는 다수의 미세홈으로 이루어지는 오일뱅크가 형성된 것을 특징으로 한다. 이에 의하면, 상기 오일뱅크에 저장된 윤활유에 의해 커넥팅로드와 피스톤핀 사이의 마찰습동면이 원활하게 윤활될 수 있다.The connecting rod lubrication structure of the compressor according to the present invention for achieving the above object is formed through the longitudinal direction of the inside of the connecting rod is an oil flow path for supplying lubricating oil to the friction sliding surface between the small diameter portion of the connecting rod and the piston pin In the connecting rod lubrication structure of the compressor provided, characterized in that the oil bank is formed of a plurality of fine grooves in which lubricating oil can remain on at least one of the inner peripheral surface of the small diameter portion and the outer peripheral surface of the piston pin. According to this, the friction sliding surface between the connecting rod and the piston pin can be smoothly lubricated by the lubricating oil stored in the oil bank.
또한, 상기 오일뱅크의 미세홈은 상기 커넥팅로드의 소경부와 피스톤핀 사이의 마찰습동면의 전반에 걸쳐 골고루 형성된 것이 바람직하다.In addition, the micro groove of the oil bank is preferably formed evenly over the entire friction sliding surface between the small diameter portion of the connecting rod and the piston pin.
이하, 본 발명의 바람직한 실시예를 첨부도면에 의거하여 설명한다.Best Mode for Carrying Out the Invention Preferred embodiments of the present invention will now be described based on the accompanying drawings.
첨부한 도 3은 본 발명에 의한 커넥팅로드를 나타낸 단면도이다. 참고로 본 실시예를 설명함에 있어서, 종래와 그 구성 및 작용이 동일한 부분에 대해서는 동일한 참조부호를 부여하여 인용한다.3 is a cross-sectional view showing a connecting rod according to the present invention. For reference, in describing the present embodiment, the same reference numerals refer to the same parts as those in the related art.
도 3에 도시된 바와 같이, 본 발명에 의한 커넥팅로드의 윤활구조는, 오일픽업튜브(20)로 흡입된 윤활유가 소경부(6)로 이동하는 오일유로(24)와, 피스톤핀(7)의 외주면 둘레로 상기 오일유로(24)와 연통되도록 형성된 오일홈(26) 및 상기 소경부(6)와 피스톤핀(7)의 마찰습동면에 형성된 오일뱅크(28)를 구비한다.As shown in FIG. 3, the lubricating structure of the connecting rod according to the present invention includes an oil passage 24 through which the lubricating oil sucked into the oil pick-up tube 20 moves to the small diameter portion 6, and the piston pin 7. An oil groove (26) formed in communication with the oil passage (24) around the outer circumferential surface of the oil bank (28) formed on the friction sliding surface of the small diameter portion (6) and the piston pin (7).
상기 오일픽업튜브(20)는 크랭크축(1)의 편심부(2)에 연결되어 있으며, 이 오일픽업튜브(20)의 회전에 의한 원심력으로 밀폐용기(10)의 저부에 저장된 윤활유가 흡입되어 커넥팅로드의 소경부(6)로 공급된다. 상기 편심부(2)에는 상기 오일픽업튜브(10)와 연통하는 메인오일유로(21)가 편심부(2)의 축방향으로 관통 형성된다.The oil pick-up tube 20 is connected to the eccentric portion 2 of the crankshaft 1, the lubricant stored in the bottom of the sealed container 10 by the centrifugal force by the rotation of the oil pick-up tube 20 is sucked in It is supplied to the small diameter part 6 of a connecting rod. The eccentric portion 2 is formed with a main oil passage 21 communicating with the oil pick-up tube 10 in the axial direction of the eccentric portion 2.
상기 오일유로(24)는 상기 커넥팅로드(3)의 내부에 상기 편심부(2)의 오일그루브(22)과 연통하도록 형성되며, 이 오일유로(24)를 통해 커넥팅로드(3)의 소경부(6)에 윤활유가 공급된다.The oil passage 24 is formed to communicate with the oil groove 22 of the eccentric portion 2 in the connecting rod 3, and the small diameter portion of the connecting rod 3 through the oil passage 24. Lubricating oil is supplied to (6).
상기 피스톤핀(7)에 형성된 오일홈(26)은 상기 오일유로(24)와 연통하며, 상기 오일유로(24)를 통해 공급된 윤활유는 이 오일유로(24)를 따라 유동하여 상기 소경부(6)와 상기 피스톤핀(7) 사이의 마찰습동면으로 공급된다.The oil groove 26 formed in the piston pin 7 communicates with the oil passage 24, and the lubricating oil supplied through the oil passage 24 flows along the oil passage 24 so that the small diameter portion ( 6) is supplied to the friction sliding surface between the piston pin (7).
상기 오일뱅크(28)는 상기 커넥팅로드(3) 소경부(6)와 상기 피스톤핀(7)의 외주면에 형성된다. 이 오일뱅크(28)는 공급된 윤활유가 잔류할 수 있도록 상기 커넥팅로드(3) 소경부(6)의 내주면 또는, 피스톤핀(7)의 외주면에 오목형상으로 형성된 다수의 미세홈(28a)으로 이루어진다. 도 4에 도시된 바와 같이, 상기 오일뱅크(28)는 다수의 미세홈(28a)들이 상호 일정한 간격을 이루며 복수의 열로 배열됨으로써 형성되며, 이러한 미세홈(28a)의 배열은 꼭 이에 한정되는 것은 아니며, 소경부(6)와 피스톤핀(7) 사이의 마찰습동면에서 어느 한 부분으로 치우침 없이 다양한 배열이나 형상으로 형성될 수 있을 것이다.The oil bank 28 is formed on the outer circumferential surface of the connecting rod 3 small diameter portion 6 and the piston pin (7). The oil bank 28 includes a plurality of fine grooves 28a formed in a concave shape on the inner circumferential surface of the small diameter portion 6 of the connecting rod 3 or the outer circumferential surface of the piston pin 7 so that the supplied lubricant oil can remain. Is done. As shown in FIG. 4, the oil bank 28 is formed by arranging a plurality of microgrooves 28a in a plurality of rows at regular intervals, and the arrangement of the microgrooves 28a is not limited thereto. Or, it may be formed in a variety of arrangements or shapes without bias to any part in the friction sliding surface between the small diameter portion 6 and the piston pin (7).
한편, 상기 미세홈(28a)은 그 크기가 크면 소경부(6)와 피스톤핀(7) 사이의 접촉면적이 감소되어 이 부위에서 작동하중에 의한 마모를 초래할 수 있기 때문에, 레이저를 응용한 마킹 공법으로 작고 미세하게 형성하는 것이 바람직하다.On the other hand, since the microgroove 28a has a large size, the contact area between the small diameter portion 6 and the piston pin 7 is reduced, which may cause wear due to the working load at this portion. It is preferable to form small and fine by a method.
상기와 같은 본 발명에 의한 커넥팅로드 소경부의 윤활구조에 의하면, 압축기가 구동하여 오일픽업튜브(20)가 회전하면 밀폐용기(10)의 저부에 저장되어 있는 윤활유가 메인오일유로(21)를 따라 유동하게 되는데, 여기서 윤활유의 일부가 크랭크축(1)의 편심부(2)에 형성된 오일그루브(22)와 이 오일그루브(22)와 연통되어 있는 커넥팅로드(3)의 오일유로(24)를 통해 커넥팅로드(3) 소경부(6)로 공급된다. 소경부(6)로 공급된 윤활유는 피스톤핀(7)에 형성된 오일홈(26)을 따라 유동하면서소경부(6)와 피스톤핀(7) 사이로 공급된다. 이때, 오일뱅크(28)에 윤활유가 채워진다.According to the lubrication structure of the connecting rod small diameter portion according to the present invention as described above, when the compressor is driven and the oil pick-up tube 20 rotates, the lubricating oil stored at the bottom of the sealed container 10 is transferred to the main oil flow path 21. A portion of the lubricating oil is flowed along the oil groove 22 formed in the eccentric portion 2 of the crankshaft 1 and the oil flow passage 24 of the connecting rod 3 in communication with the oil groove 22. Through the connecting rod 3 is supplied to the small diameter portion (6). The lubricating oil supplied to the small diameter part 6 is supplied between the small diameter part 6 and the piston pin 7 while flowing along the oil groove 26 formed in the piston pin 7. At this time, the oil bank 28 is filled with lubricating oil.
한편, 운전중이던 압축기가 정지하면, 윤활유가 공급되지 않아 커넥팅로드(3) 소경부(6)와 피스톤핀(7) 사이의 마찰습동면에 공급된 윤활유는 하부로 유동하여 밀폐용기(10)의 저면으로 유입된다. 그러나, 오일뱅크(28)에 윤활유가 저장되어 있기 때문에 압축기가 재운전되어 윤활유가 재공급되기까지의 무급유시에도 오일뱅크(28)의 잔류 윤활유가 소경부(6)와 피스톤핀(7) 사이의 마찰습동면을 윤활하여 이 부위에서의 마모를 방지하게 된다.On the other hand, when the compressor in operation stops, lubricating oil is not supplied, so that the lubricating oil supplied to the friction sliding surface between the small diameter portion 6 and the piston pin 7 of the connecting rod 3 flows downward to the bottom of the sealed container 10. It flows to the bottom. However, since lubricating oil is stored in the oil bank 28, the residual lubricating oil of the oil bank 28 is kept between the small diameter portion 6 and the piston pin 7 even when the compressor is restarted and no oil is supplied until the lubricating oil is resupplied. The friction sliding surface of the lubrication surface is lubricated to prevent wear at this area.
이상에서 설명한 바와 같은 본 발명에 의하면, 커넥팅로드 소경부와 피스톤핀 사이의 마찰습동부에 오일뱅크를 형성하여 윤활유가 잔류할 수 있도록 하기 때문에, 압축기가 정지 후 재운전되는 초기의 무급유 상태에서도 이 부위에서의 마모를 줄일 수 있는 효과가 있다.According to the present invention as described above, since the oil bank is formed in the friction sliding portion between the connecting rod small diameter portion and the piston pin so that the lubricant can remain, even in the initial non-lubrication state when the compressor is stopped and restarted. There is an effect to reduce wear at the site.
또한, 본 발명에 의하면, 오일뱅크가 작고 미세한 미세홈으로 이루어지기 때문에, 커넥팅로드 소경부와 피스톤핀의 접촉면적이 크게 감소되지 않아 면압의 증가를 억제하기 때문에 운동 하중에 의한 마모를 감소시킬 수 있는 효과가 있다.In addition, according to the present invention, since the oil bank is made of small and fine grooves, the contact area between the connecting rod small diameter portion and the piston pin is not greatly reduced, thereby suppressing an increase in surface pressure, thereby reducing wear due to the exercise load. It has an effect.
이상, 본 발명을 본 발명의 원리를 예시하기 위한 바람직한 실시예에 대하여 도시하고 설명하였으나, 본 발명은 그와 같이 도시되고 설명된 그대로의 구성 및 작용으로 한정되는 것이 아니다. 오히려, 첨부된 특허청구범위의 사상 및 범주를 일탈함이 없이 본 발명에 대한 다수의 변경 및 수정이 가능함을 당업자들은 잘 이해할 수 있을 것이다. 따라서, 그러한 모든 적절한 변경 및 수정과 균등물들도 본 발명의 범위에 속하는 것으로 간주되어야 할 것이다.While the invention has been shown and described with respect to preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010080712A KR100736070B1 (en) | 2001-12-18 | 2001-12-18 | Connecting rod lubrication structure of compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020010080712A KR100736070B1 (en) | 2001-12-18 | 2001-12-18 | Connecting rod lubrication structure of compressor |
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| KR20030050301A true KR20030050301A (en) | 2003-06-25 |
| KR100736070B1 KR100736070B1 (en) | 2007-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8613137B2 (en) | 2004-11-16 | 2013-12-24 | Mahle International Gmbh | Connecting rod lubrication recess |
| CN115971965A (en) * | 2022-12-30 | 2023-04-18 | 淮阴工学院 | A lubricating device for machine tool processing fixtures |
| KR102807476B1 (en) * | 2024-12-02 | 2025-05-15 | 주식회사코핸즈 | Air compressor with multi-type connecting rod with excellent flatness and precision of bigend |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920004188Y1 (en) * | 1990-05-29 | 1992-06-22 | 삼성전자 주식회사 | Connecting rod double bearing device |
| KR0182539B1 (en) * | 1995-11-06 | 1999-05-01 | 김광호 | Piston device of reciprocating compressor |
| KR100301469B1 (en) * | 1998-02-26 | 2002-02-28 | 구자홍 | Structure for supplying oil of hermetic motor compressor |
| KR20030090296A (en) * | 2002-05-22 | 2003-11-28 | 삼성광주전자 주식회사 | Lubricating system for reciprocating compressor |
| US6745742B2 (en) * | 2002-10-07 | 2004-06-08 | Siegfried Meyer | Connecting rod structure |
| KR20190000910U (en) * | 2019-04-04 | 2019-04-16 | 주식회사 알씨엔이 | parallel link type robot |
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2001
- 2001-12-18 KR KR1020010080712A patent/KR100736070B1/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8613137B2 (en) | 2004-11-16 | 2013-12-24 | Mahle International Gmbh | Connecting rod lubrication recess |
| CN115971965A (en) * | 2022-12-30 | 2023-04-18 | 淮阴工学院 | A lubricating device for machine tool processing fixtures |
| CN115971965B (en) * | 2022-12-30 | 2023-12-19 | 淮阴工学院 | Lubricating device for machine tool machining fixture |
| KR102807476B1 (en) * | 2024-12-02 | 2025-05-15 | 주식회사코핸즈 | Air compressor with multi-type connecting rod with excellent flatness and precision of bigend |
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| KR100736070B1 (en) | 2007-07-06 |
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