KR20000046855A - Oil supply structure of crank shaft of hermetic rotation compressor - Google Patents

Oil supply structure of crank shaft of hermetic rotation compressor Download PDF

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Publication number
KR20000046855A
KR20000046855A KR1019980063582A KR19980063582A KR20000046855A KR 20000046855 A KR20000046855 A KR 20000046855A KR 1019980063582 A KR1019980063582 A KR 1019980063582A KR 19980063582 A KR19980063582 A KR 19980063582A KR 20000046855 A KR20000046855 A KR 20000046855A
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KR
South Korea
Prior art keywords
oil
crankshaft
crank shaft
propeller
oil supply
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Application number
KR1019980063582A
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Korean (ko)
Inventor
고영철
Original Assignee
구자홍
엘지전자 주식회사
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Priority to KR1019980063582A priority Critical patent/KR20000046855A/en
Publication of KR20000046855A publication Critical patent/KR20000046855A/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
    • 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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner 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
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/023—Lubricant distribution through a hollow driving shaft
    • 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
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft

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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: An oil supply structure of a crank shaft of a hermetic rotation compressor is provided to improve the oil supply efficiency by forming a spiral groove on an inner surface of a crank shaft. CONSTITUTION: An oil supply structure of a crank shaft of a hermetic rotation compressor includes a propeller(41) mounted at a lower part inside a crank shaft(40) having an eccentric part and inserted in a rotator of the compressor, and an oil pickup(42) mounted at a lower part of the propeller for supply freezing oil of a lower part in the oil pickup to a driving part of the compressor via the propeller, wherein a spiral groove(43) is formed on an inner surface of the crank shaft mounted with the propeller so that the freezing oil in the oil pickup is forcibly and smoothly supplied along the groove when the crank shaft is operating and the oil supply speed is improved by the rotation of the spiral groove.

Description

밀폐형 회전식 압축기의 크랭크샤프트 급유구조Crankshaft refueling structure of hermetic rotary compressor

본 발명은 밀폐형 회전식 압축기의 크랭크샤프트 급유구조에 관한 것이다.The present invention relates to a crankshaft oil supply structure of a hermetic rotary compressor.

일반적으로 밀폐형 회전식 압축기는 도 1에 도시된 바와 같이 밀폐용기(1) 내부에 고정자(2)와 회전자(3) 등으로 구성되는 전동기구부와, 상기 회전자(3)의 내경에 압입되며 하부에 편심부(4A)가 형성된 크랭크샤프트(4)과, 상기 크랭크샤프트(4)의 편심부(4A)를 감싸며 상부베어링(5) 및 하부베어링(6)과 함께 볼트(7)에 의해 결합된 실린더(8)와, 상기 크랭크샤프트(5)의 편심부(4A)에 삽입되어 실린더(8)의 내경을 접하면서 자전 및 공정하는 롤러(9)과, 상기 롤러(9)의 외주면과 접하면서 실린더(8) 내부를 고압부와 저압부로 분리하며 실린더 구폭 상에서 직선운동을 하는 베인 등이 구비된 압축기구부로 구성되어 있다. 또한 상기 상부베어링(5)의 일측부에는 압축된 냉매가스를 토출시킬 수 있도록 토출포트(도시되지 않음)가 형성되어 있고, 상기 토출포트에는 압축 냉매가스의 압력에 따라 토출포트를 개폐시키는 토출밸브(도시되지 않음)가 설치되어 있다. 그리고 상기 상부베어링(5)의 상부측에는 토출가스의 토출 소음을 저감시키는 소음기(Muffler)(10)가 복개되는 식으로 결합되어 있다. 또한 실린더(8)의 저압부에는 흡입구(8A)가 형성되어 상기 흡입구(8A)를 통해서 냉매가스가 실린더(8) 내부로 유입될 수 있도록 구성되어 있고, 상기 흡입구(8A)는 밀폐용기(1)의 측부에 설치된 어큐뮬레이터(11) 및 냉매유입관(12)과 통하도록 연결되어 있다. 여기서 미설명 부호 13은, 상기 밀폐용기(1) 내부에서 압축된 냉매가스가 외부로 토출되는 토출관이다.In general, the hermetic rotary compressor includes an electric mechanism part including a stator 2 and a rotor 3 inside the hermetically sealed container 1, and an inner diameter of the rotor 3. A crankshaft 4 having an eccentric portion 4A formed therein, and an eccentric portion 4A of the crankshaft 4 surrounding the upper and lower bearings 6 and joined by a bolt 7 together with the upper bearing 5 and the lower bearing 6. The roller 8 is inserted into the cylinder 8 and the eccentric portion 4A of the crankshaft 5 to rotate and process while contacting the inner diameter of the cylinder 8, while contacting the outer peripheral surface of the roller 9 The inside of the cylinder 8 is divided into a high pressure part and a low pressure part, and is comprised by the compressor mechanism part provided with the vane etc. which make linear movement on a cylinder width. In addition, a discharge port (not shown) is formed at one side of the upper bearing 5 to discharge the compressed refrigerant gas, and the discharge port has a discharge valve for opening and closing the discharge port according to the pressure of the compressed refrigerant gas. (Not shown) is installed. In addition, the upper side of the upper bearing 5 is coupled in such a way that a muffler 10 for reducing the discharge noise of the discharge gas is covered. In addition, a suction port 8A is formed at the low pressure portion of the cylinder 8 so that refrigerant gas can be introduced into the cylinder 8 through the suction port 8A, and the suction port 8A is a sealed container 1. It is connected to the accumulator 11 and the refrigerant inlet pipe 12 provided on the side of the). Here, reference numeral 13 denotes a discharge tube through which the refrigerant gas compressed in the sealed container 1 is discharged to the outside.

이와같이 구성된 상기 밀폐형 회전식 압축기는 먼저, 전류공급에 의해서 회전자(3)가 회전하게 되고, 상기 회전자(3)와 함께 크랭크샤프트(4)이 회전한다. 상기 크랭크샤프트(4)이 회전함에 따라 롤러(9)는 베인과 접촉된 상태로 실린더(8) 내부에서 회전하게 되고, 어큐뮬레이터(11)를 통해 유입된 저온 저압의 냉매가스는 냉매유입관(12) 및 실린더(8)의 흡입구(8A)를 거쳐 실린더(8) 내부로 흡입되어 고온 고압의 상태로 압축된다. 이렇게 압축된 냉매가스가 일정압 이상이 되면 토출밸브는 그 압력에 의해서 토출포트를 개방시키게 되고, 이 개방된 토출포트를 통해서 압축된 냉매가스가 토출된다. 그리고 상기 토출포트를 통해 토출된 압축냉매가스는 소음기(10)를 거쳐 밀폐용기(1)의 상부에 설치된 토출관(13)측으로 유입되고, 상기 토출관(13)을 통해서 압축기 외부로 토출된다. 한편, 상기 크랭크샤프트(4)의 하단부에는 프로펠러(14) 및 오일픽업(15)이 설치되어 운전중 상기 오일픽업(15) 하부측의 냉동유를 오일픽업(15) 상부측 프로펠러(14)를 통해서 냉동유를 구동부품에 공급하도록 되어 있다.In the hermetic rotary compressor configured as described above, the rotor 3 is rotated by the current supply, and the crankshaft 4 is rotated together with the rotor 3. As the crankshaft 4 rotates, the roller 9 rotates inside the cylinder 8 in contact with the vane, and the low temperature low pressure refrigerant gas introduced through the accumulator 11 is a refrigerant inlet pipe 12. And through the suction port 8A of the cylinder 8, are sucked into the cylinder 8 and compressed to a state of high temperature and high pressure. When the compressed refrigerant gas is above a predetermined pressure, the discharge valve opens the discharge port by the pressure, and the compressed refrigerant gas is discharged through the opened discharge port. Then, the compressed refrigerant gas discharged through the discharge port flows into the discharge tube 13 side installed in the upper portion of the sealed container 1 through the silencer 10 and is discharged to the outside of the compressor through the discharge tube 13. On the other hand, a propeller 14 and an oil pick-up 15 are installed at the lower end of the crankshaft 4 so that the refrigeration oil on the lower side of the oil pick-up 15 is lowered during operation. The refrigeration oil is supplied to the drive parts through the

그러나 이러한 종래의 밀폐형 회전식 압축기의 크랭크샤프트 급유구조는 프로펠러가 설치된 크랭크샤프트의 내벽면이 평면으로 형성되어 있어, 운전중 상기 크랭크샤프트의 내벽면을 타고 이송하는 냉동유의 급유속도 및 급유효율이 떨어짐으로써 압축실 내에서 습동하는 기구부의 급유부족으로 인한 압축기의 성능 및 신뢰성이 저하를 초래하는 문제점이 있었다. 따라서 본 발명의 목적은 운전중 크랭크샤프트에 의한 급유속도 및 효율을 보다 향상시키는데 있다.However, the crankshaft refueling structure of the conventional hermetic rotary compressor has a flat inner wall of the crankshaft in which the propeller is installed, so that the refueling speed and refueling efficiency of the refrigerated oil transported on the inner wall of the crankshaft during operation are reduced. There is a problem in that the performance and reliability of the compressor are deteriorated due to the lack of oil supply to the mechanism that slides in the compression chamber. Therefore, an object of the present invention is to further improve the fueling speed and efficiency by the crankshaft during operation.

도 1은 일반적인 밀폐형 회전식 압축기의 내부 구성을 보인 단면도.1 is a cross-sectional view showing the internal configuration of a general hermetic rotary compressor.

도 2는 종래의 밀폐형 회전식 압축기의 크랭크샤프트 급유구조를 보인 단면도.2 is a cross-sectional view showing a crankshaft oil supply structure of a conventional hermetic rotary compressor.

도 3은 본 발명에 의한 밀폐형 회전식 압축기의 크랭크샤프트 급유구조를 보인 단면도.3 is a cross-sectional view showing a crankshaft oil supply structure of the hermetic rotary compressor according to the present invention.

**도면의주요부분에대한부호의설명**** description of the symbols for the main parts of the drawings **

1:밀폐용기 2:고정자1: airtight container 2: stator

3:회전자 4:크랭크샤프트3: rotor 4: crankshaft

4A:편심부 5:상부베어링4A: Eccentric 5: Upper bearing

6:하부베어링 7:볼트6: Lower bearing 7: Bolt

8:실린더 8A:흡입구8: Cylinder 8A: Inlet

9:롤러 10:소음기9: roller 10: silencer

11:어큐뮬레이터 12:냉매유입관11: Accumulator 12: refrigerant inlet pipe

13:토출관 40:크랭크샤프트13: discharge pipe 40: crankshaft

41:프로펠러 42:오일픽업41: Propeller 42: Oil Pickup

43:스파이럴홈43: spiral home

이러한 본 발명의 목적을 달성하기 위하여 회전자에 압입된 크랭크샤프트의 하단부에 프로펠러 및 오일픽업을 설치하여 운전중 상기 오일픽업 하부측 냉동유를 상기 프로펠러를 통해 구동부품에 공급하도록 구성됨에 있어서, 상기 프로펠러 측의 크랭크샤프트 내측면에 냉동유가 타고 이송되는 스파이럴홈을 형성한 것을 특징으로 한 밀폐형 회전식 압축기의 크랭크샤프트 급유구조가 제공된다.In order to achieve the object of the present invention is configured to supply a propeller and oil pick-up to the lower end of the crankshaft press-fitted to the rotor to supply the driving oil through the propeller to the oil pick-up lower side during operation, the The crankshaft refueling structure of the hermetic rotary compressor is provided on the inner side of the crankshaft on the propeller side, forming a spiral groove through which the freezing oil is carried.

이하 첨부된 도면을 참조로 하여 본 발명의 구성을 실시예에 따라 상세히 설명한다.Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 일반적인 밀폐형 회전식 압축기의 내부 구성을 보인 단면도이고, 도 3은 본 발명에 의한 밀폐형 회전식 압축기의 크랭크샤프트 급유구조를 보인 단면도로서, 이 밀폐형 회전식 압축기는 통상에서와 같이 밀폐용기 내부에 고정자와 회전자 등으로 구성되는 전동기구부가 설치되고, 상기 회전자에는 편심부를 갖는 크랭크샤프트가 압입 설치된다. 그리고 상기 크랭크샤프트의 편심부를 감싸는 식으로 상부베어링 및 하부베어링 사이에 실린더가 볼트로 체결되어 압축실을 형성하고, 크랭크샤프트의 편심부에는 롤러가 삽입되는 식으로 설치되어 회전자에 의한 구동력으로 실린더의 내경에 접하면서 회전하여 흡입구를 통해 실린더 내부의 압축실로 유입된 냉매를 압축하는 식으로 압축기구부를 구성한다. 또한 도 3에 도시된 바와 같이 상기 크랭크샤프트의 하부 내측에는 프로펠러(41)가 설치되고, 상기 프로펠러(41)의 하단부에는 오일픽업(42)이 설치되어 운전중 상기 오일픽업(42)의 하부측 냉동유를 프로펠러(41)를 통해서 구동부품에 공급하도록 구성된다. 이러한 밀폐형 회전식 압축기에 있어, 본 발명은 상기 프로펠러(41)가 위치한 크랭크샤프트(40)의 내측면에 스파이럴홈(Spiral groove)(43)을 형성한 것이다. 상기 스파이럴홈(43)은 크랭크샤프트(40)의 내측면을 따라 나선형으로 홈을 형성한 구조로서, 운전중 크랭크샤프트(40)가 회전하게 되면 오일픽업(42) 및 프로펠러(41)를 통해 냉동유가 나선형의 홈을 따라 강제 이송하게 되는 것이다. 이에 따라 냉동유는 회전중인 크랭크샤프트(40)의 내측면에 형성된 스파이럴홈(43)의 자체 회전력으로 급유속도가 가중될 뿐만 아니라 급유가 보다 원활하게 이루어짐으로써 급유효율을 높일 수 있게 된다.Figure 1 is a cross-sectional view showing the internal configuration of a conventional hermetic rotary compressor, Figure 3 is a cross-sectional view showing a crankshaft refueling structure of the hermetic rotary compressor according to the present invention, the hermetic rotary compressor is a stator inside the hermetic container as usual. An electric mechanism part composed of a rotor or the like is provided, and the crankshaft having an eccentric part is press-fitted to the rotor. The cylinder is bolted between the upper bearing and the lower bearing to form a compression chamber by surrounding the eccentric portion of the crankshaft, and a roller is inserted into the eccentric portion of the crankshaft so that the cylinder is driven by a driving force by the rotor. Compressor is configured by compressing the refrigerant introduced into the compression chamber inside the cylinder through the inlet to rotate while contacting the inner diameter of. Also, as shown in FIG. 3, a propeller 41 is installed at the lower inner side of the crankshaft, and an oil pick-up 42 is installed at the lower end of the propeller 41 to operate the lower side of the oil pick-up 42 during operation. It is configured to supply the refrigeration oil to the drive component through the propeller (41). In the hermetic rotary compressor, the present invention forms a spiral groove 43 on the inner surface of the crankshaft 40 in which the propeller 41 is located. The spiral groove 43 is a structure in which a groove is formed spirally along the inner surface of the crankshaft 40. When the crankshaft 40 rotates during operation, the spiral groove 43 is frozen through the oil pick-up 42 and the propeller 41. Oil is forced to move along the spiral groove. Accordingly, the refrigeration oil is not only a fuel supply speed is increased by its own rotational force of the spiral groove 43 formed on the inner surface of the crankshaft 40 being rotated, but the oil supply is made more smoothly, thereby increasing the oil supply efficiency.

이같이 본 발명은 크랭크샤프트의 내측면을 따라 나선형으로 홈을 형성하여 냉동유를 강제 이송시킬 수 있도록 함으로써 보다 신속한 급유가 이루어질 뿐만 아니라 급유가 원활하게 이루어져 급유효율을 높일 수 있고, 이로인해 구동부품의 충분한 급유가 이루어져 압축기의 성능 및 신뢰성을 보다 향상시킬 수 있는 효과를 갖게 된다.As described above, the present invention forms a groove along the inner surface of the crankshaft in a spiral to force the refrigeration oil to be forcibly transported, thereby not only providing quicker oil supply but also smoother oil supply, thereby improving oil supply efficiency, and thus, Sufficient lubrication is provided to have an effect of further improving the performance and reliability of the compressor.

Claims (1)

회전자에 압입된 크랭크샤프트의 하단부에 프로펠러 및 오일픽업을 설치하여 운전중 상기 오일픽업 하부측 냉동유를 상기 프로펠러를 통해 구동부품에 공급하도록 구성됨에 있어서, 상기 프로펠러 측의 크랭크샤프트 내측면을 따라 스파이럴홈을 형성한 것을 특징으로 한 밀폐형 회전식 압축기의 크랭크샤프트 급유구조.A propeller and an oil pick-up are installed at a lower end of the crankshaft press-fitted to the rotor to supply the refrigeration oil on the lower side of the oil pick-up to a driving part through the propeller during operation, along the inner side of the crankshaft on the propeller side. The crankshaft oil supply structure of the hermetic rotary compressor characterized by forming a spiral groove.
KR1019980063582A 1998-12-31 1998-12-31 Oil supply structure of crank shaft of hermetic rotation compressor KR20000046855A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100453903B1 (en) * 2002-06-05 2004-10-20 (주)티에프에스 Manufacturig method of oil pick up frame for compressor
EP3159539A1 (en) 2015-10-21 2017-04-26 Whirlpool S.A. Constructive arrangement introduced in a reciprocating compressor including a lubricant oil pump
CN109441825A (en) * 2018-12-12 2019-03-08 珠海格力节能环保制冷技术研究中心有限公司 Crankshaft and rotor-type compressor
KR20230157133A (en) * 2022-05-09 2023-11-16 엘지전자 주식회사 Scroll Compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100453903B1 (en) * 2002-06-05 2004-10-20 (주)티에프에스 Manufacturig method of oil pick up frame for compressor
EP3159539A1 (en) 2015-10-21 2017-04-26 Whirlpool S.A. Constructive arrangement introduced in a reciprocating compressor including a lubricant oil pump
CN109441825A (en) * 2018-12-12 2019-03-08 珠海格力节能环保制冷技术研究中心有限公司 Crankshaft and rotor-type compressor
KR20230157133A (en) * 2022-05-09 2023-11-16 엘지전자 주식회사 Scroll Compressor

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