KR20040106728A - Shaft for hermetic rotary compressor - Google Patents

Shaft for hermetic rotary compressor Download PDF

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Publication number
KR20040106728A
KR20040106728A KR1020030037550A KR20030037550A KR20040106728A KR 20040106728 A KR20040106728 A KR 20040106728A KR 1020030037550 A KR1020030037550 A KR 1020030037550A KR 20030037550 A KR20030037550 A KR 20030037550A KR 20040106728 A KR20040106728 A KR 20040106728A
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KR
South Korea
Prior art keywords
center
thrust
oil
rotary compressor
bearing member
Prior art date
Application number
KR1020030037550A
Other languages
Korean (ko)
Inventor
조한종
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020030037550A priority Critical patent/KR20040106728A/en
Publication of KR20040106728A publication Critical patent/KR20040106728A/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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • 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
    • 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
    • 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
    • F04C29/025—Lubrication; Lubricant separation using a lubricant pump
    • 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
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE: A rotation shaft of a hermetic rotary compressor is provided to prevent the metal friction caused by the unbalance of oil supply for reducing forcible wear and noise generation, thereby improving the performance of the compressor. CONSTITUTION: A rotation shaft of a hermetic rotary compressor includes a body part(25) having an upper part coupled with a rotator of a motor and an axial hole of an upper bearing element and a lower part coupled with an axial hole of a lower bearing element. A thrust part(28) is formed eccentrically with respect to the center(C1) of the body part and has a bottom surface contacting a top surface of the lower bearing element for relative motion. An eccentric part(29) has a center(C3) eccentrically formed with respect to the center(C2) of the thrust part with a diameter larger than the thrust, and coupled with a roller on a periphery. An oil receiving part(73) is formed in the shape of a groove to the bottom surface of the thrust part to be upwardly indented for receiving oil. An oil supply path(26) is formed in the axial center of the body part.

Description

밀폐형 회전식 압축기의 회전축{SHAFT FOR HERMETIC ROTARY COMPRESSOR}SHAFT FOR HERMETIC ROTARY COMPRESSOR}

본 발명은, 밀폐형 회전식 압축기의 회전축에 관한 것으로서, 보다 상세하게는, 스러스트면의 마찰을 저감하여 마찰에 기인한 강제 마모 및 소음 발생을 억제할 수 있도록 한 밀폐형 회전식 압축기의 회전축에 관한 것이다.The present invention relates to a rotating shaft of a hermetic rotary compressor, and more particularly, to a rotating shaft of a hermetic rotary compressor which can reduce the friction of the thrust surface to suppress forced wear and noise caused by the friction.

도 1은 종래의 밀폐형 회전식 압축기의 단면도이고, 도 2는 도 1의 회전축의 확대도이며, 도 3은 도 2의 축선방향에 따른 측면도이다. 이들 도면에 도시된 바와 같이, 밀폐형 회전식 압축기는, 내부에 밀폐공간을 형성하는 케이싱(11)과, 케이싱(11)의 내부에 배치되어 냉매를 압축하는 압축부(31)와, 압축부(31)에 구동력을 제공하는 전동모터부(21)를 구비하고 있다.1 is a cross-sectional view of a conventional hermetic rotary compressor, FIG. 2 is an enlarged view of the rotating shaft of FIG. 1, and FIG. 3 is a side view of the rotary shaft of FIG. As shown in these figures, the hermetic rotary compressor includes a casing 11 for forming a closed space therein, a compression part 31 disposed inside the casing 11 to compress the refrigerant, and a compression part 31. ) Is provided with an electric motor unit 21 for providing a driving force.

케이싱(11)의 일측에는 냉매를 흡입할 수 있도록 흡입관(13)이 설치되어 있으며, 흡입관(13)에는 압축부(31)에 기체상태의 냉매를 제공할 수 있도록 어큐뮬레이터(17)가 결합되어 있다. 케이싱(11)의 상부영역에는 압축된 냉매가 토출될 수 있도록 토출관(15)이 상향 돌출되게 결합되어 있다.A suction pipe 13 is installed at one side of the casing 11 to suck refrigerant, and the accumulator 17 is coupled to the suction pipe 13 so as to provide a gaseous refrigerant to the compression unit 31. . In the upper region of the casing 11, the discharge pipe 15 is coupled to protrude upward to discharge the compressed refrigerant.

전동모터부(21)는, 케이싱(11)의 내부 상부영역에 고정배치되는 고정자(22)와, 고정자(22)에 대해 회전가능하게 배치되는 회전자(23)와, 회전자(23)의 축심에 일체로 결합되어 하향 연장되며 하부에 편심부(29)가 형성되어 있는 회전축(24)을 구비하고 있다.The electric motor part 21 includes a stator 22 fixedly disposed in the upper upper region of the casing 11, a rotor 23 rotatably disposed with respect to the stator 22, and a rotor 23. The rotary shaft 24 is integrally coupled to the shaft center and extended downward, and the eccentric portion 29 is formed at the lower portion thereof.

압축부(31)는, 내부에 흡입된 냉매가 압축될 수 있도록 내경면(36)이 형성된 실린더(35)와, 실린더(35)의 상하측에 각각 결합되어 회전축(24)을 지지하는 상부베어링부재(41) 및 하부베어링부재(51)와, 회전축(24)의 편심부(29)에 결합되어 실린더(35)의 내경면(36)을 따라 회전하면서 냉매를 압축하는 롤러(33)를 구비하고있다.The compression unit 31 is coupled to the upper and lower sides of the cylinder 35 and the cylinder 35, the inner diameter surface 36 is formed so that the refrigerant sucked therein, the upper bearing for supporting the rotating shaft 24 And a roller 33 coupled to the member 41 and the lower bearing member 51 and the eccentric portion 29 of the rotating shaft 24 to compress the refrigerant while rotating along the inner diameter surface 36 of the cylinder 35. Doing.

한편, 회전축(24)은, 전동모터부(21)의 회전력을 압축부(31)에 전달할 수 있도록 회전자(23)와 상부베어링부재(41) 및 하부베어링부재(51)의 각 축공(42,52)에 각각 결합되는 바디(25)와, 바디(25)의 중심(C1)에 대해 편심(C2)되고 저부면이 하부베어링부재(51)에 슬라이딩 가능하게 접촉되는 스러스트부(28)와, 롤러(33)가 실린더(35)의 내경면을 따라 선회할 수 있도록 스러스트부(28)의 중심(C2)에 대해 편심(C3)되고 스러스트부(28)보다 확장된 반경을 가지도록 형성되어 둘레에 롤러(33)가 결합되는 편심부(29)를 구비하고 있다.On the other hand, the rotary shaft 24, each shaft hole 42 of the rotor 23, the upper bearing member 41 and the lower bearing member 51 to transmit the rotational force of the electric motor portion 21 to the compression unit 31. A thrust portion 28 coupled to the body 25 and a thrust portion 28 eccentrically with respect to the center C1 of the body 25 and having a bottom surface slidably contacting the lower bearing member 51; The roller 33 is eccentric with respect to the center C2 of the thrust portion 28 so as to pivot along the inner diameter surface of the cylinder 35 and is formed to have an extended radius than the thrust portion 28 The eccentric part 29 to which the roller 33 is engaged is provided in the circumference.

바디(25)의 축심에는 케이싱(11)의 저부의 오일(18)이 상향 급송될 수 있도록 오일공급로(26)가 형성되어 있으며, 바디(25)의 하단에는 오일(18)을 펌핑할 수 있도록 오일펌프(30)가 결합되어 있다. 스러스트부(28)의 상하측에는 오일(18)이 유출될 수 있도록 오일공(27a,27b)이 각각 형성되어 있다.An oil supply path 26 is formed in the shaft center of the body 25 so that the oil 18 at the bottom of the casing 11 can be fed upward, and the oil 18 can be pumped at the lower end of the body 25. The oil pump 30 is combined so that. Oil holes 27a and 27b are formed on the upper and lower sides of the thrust portion 28 so that the oil 18 can flow out.

그런데, 이러한 종래의 밀폐형 회전식 압축기의 회전축(24)에 있어서는, 스러스트부(28)의 저부면은 하부베어링부재(51)의 상면과 마찰접촉하도록 되어 있어, 장시간 운전시 또는 과도한 운전시 오일(18)의 레벨 변동에 기인한 오일(18)의 공급 불균형으로 강제 마모가 발생되기 쉬울 뿐만 아니라, 그럴 경우 전동모터부(21)의 부하로 작용하게 되어 압축기의 성능을 저하시키게 된다고 하는 문제점이 있다.By the way, in the rotary shaft 24 of the conventional hermetic rotary compressor, the bottom surface of the thrust portion 28 is in frictional contact with the upper surface of the lower bearing member 51, so that the oil 18 during long time operation or excessive operation Forced abrasion is apt to occur due to the supply imbalance of the oil 18 due to the level variation of the power supply, and in this case, the load acts as a load of the electric motor part 21, thereby degrading the performance of the compressor.

따라서, 본 발명의 목적은, 스러스트면의 마찰을 저감하여 마찰에 기인한 강제 마모 및 소음 발생을 억제할 수 있는 밀폐형 회전식 압축기의 회전축을 제공하는 것이다.Accordingly, it is an object of the present invention to provide a rotating shaft of a hermetic rotary compressor which can reduce friction of the thrust surface to suppress forced wear and noise caused by friction.

도 1은 종래의 밀폐형 회전식 압축기의 단면도,1 is a cross-sectional view of a conventional hermetic rotary compressor,

도 2는 도 1의 회전축의 확대도,2 is an enlarged view of the rotating shaft of FIG. 1;

도 3은 도 2의 축선방향에 따른 측면도,3 is a side view along the axial direction of FIG. 2;

도 4는 본 발명의 일 실시예에 따른 밀폐형 회전식 압축기의 회전축의 축선방향을 따른 측면도,Figure 4 is a side view along the axial direction of the axis of rotation of the hermetic rotary compressor according to an embodiment of the present invention,

도 5는 도 4의 Ⅴ-Ⅴ선에 따른 확대단면도,5 is an enlarged cross-sectional view taken along the line VV of FIG. 4;

도 6은 본 발명의 다른 실시예에 따른 밀폐형 회전식 압축기의 축선방향을 따른 측면도이다.6 is a side view along the axial direction of the hermetic rotary compressor according to another embodiment of the present invention.

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

25 : 바디 26 : 오일공급로25: body 26: oil supply passage

27a,27b : 오일공 28 : 스러스트부27a, 27b: oil ball 28: thrust part

29 : 편심부 30 : 오일펌프29: eccentric portion 30: oil pump

63 : 오일수용부63: oil holding part

상기 목적은, 본 발명에 따라, 고정자 및 회전자를 구비한 전동모터와, 상하측이 개방된 실린더와, 상기 실린더의 상측 및 하측을 각각 차단하도록 결합되고 중앙에 축공이 각각 형성되어 있는 상부베어링부재 및 하부베어링부재와, 상기 실린더의 내경면을 따라 선회하면서 냉매를 압축하는 롤러를 구비한 밀폐형 회전식 압축기에 있어서, 상부영역은 상기 전동모터의 회전자 및 상부베어링부재의 축공이 결합되고 하부영역은 상기 하부베어링부재의 축공이 결합되는 바디와; 상기 바디의 중심에 대해 편심되게 형성되고 저부면이 상기 하부베어링부재의 상면에 상대운동가능하게 접촉되는 스러스트부와; 상기 스러스트부에 대해 편심되고 상기 스러스트부에 비해 확장된 반경을 가지도록 형성되며 둘레에 상기 롤러가 결합되는 편심부와; 상기 스러스트부에 비해 확장된 반경을 가지도록 형성되고 둘레에 상기 롤러가 결합되는 편심부와; 상기 스러스트부의 저부면에 상향 함몰되게 형성되어 오일을 수용하는 오일수용부를 포함하는 것을 특징으로 하는 밀폐형 회전식 압축기의 회전축에 의해 달성된다.The object is, according to the present invention, an electric motor having a stator and a rotor, an upper and lower sides of an open cylinder, and an upper bearing coupled to block an upper side and a lower side of the cylinder, respectively, and having an axial hole in the center, respectively. In a hermetic rotary compressor having a member and a lower bearing member and a roller for compressing a refrigerant while pivoting along the inner diameter surface of the cylinder, the upper region is coupled with the shaft hole of the rotor and the upper bearing member of the electric motor. The body is coupled to the shaft hole of the lower bearing member; A thrust portion which is formed eccentrically with respect to the center of the body and whose bottom surface is in relative movement with the upper surface of the lower bearing member; An eccentric portion which is eccentric with respect to the thrust portion and has an extended radius as compared with the thrust portion, and wherein the roller is coupled around the thrust portion; An eccentric portion formed to have an extended radius relative to the thrust portion and having the roller coupled around the thrust portion; It is achieved by the rotary shaft of the hermetic rotary compressor characterized in that it is formed to be recessed upward on the bottom surface of the thrust portion to contain oil.

여기서, 상기 오일수용부는 상기 스러스트부의 저부면으로부터 상향 함몰되고 상기 저부면의 판면방향을 따라 연장된 그루브 형상인 것이 바람직하다.Here, the oil receiving portion is preferably a groove shape recessed upward from the bottom surface of the thrust portion and extending along the plate surface direction of the bottom surface.

상기 오일수용부는 상기 바디의 중심에 대한 상기 스러스트부의 편심방향에 직각되게 형성된 것이 효과적이다.It is effective that the oil receiving portion is formed perpendicular to the eccentric direction of the thrust portion with respect to the center of the body.

상기 오일수용부는 상기 바디의 중심에 대해 편심된 원형 고리 형상으로 구성하는 것이 바람직하다.The oil receiving portion is preferably configured in a circular ring shape eccentric with respect to the center of the body.

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

도 4는 본 발명의 일 실시예에 따른 밀폐형 회전식 압축기의 회전축의 축선방향을 따른 측면도이고, 도 5는 도 4의 Ⅴ-Ⅴ선에 따른 확대단면도이다. 전술 및 도시한 구성과 동일 및 동일 상당부분에 대해서는 도면 설명의 편의상 동일 한 참조부호를 부여하여 설명하기로 한다. 이들 도면에 도시된 바와 같이, 본 밀폐형 회전식 압축기의 회전축(61)은, 회전자(23) 및 상부베어링부재(41)의 축공(42) 및 하부베어링부재(51)의 축공(52)에 각각 결합되는 바디(25)와, 하부베어링부재(51)의 상면에 접촉되는 스러스트부(28)와, 스러스트부(28)에 비해 확장된 반경을 가지도록 형성되어 둘레에 롤러(33)가 결합되는 편심부(29)와, 스러스트부(28)의 저부면에 상향 함몰되게 형성되어 내부에 오일(18)이 수용되도록 하는 오일수용부(63)를 포함하여 구성되어 있다.Figure 4 is a side view along the axial direction of the rotary shaft of the hermetic rotary compressor according to an embodiment of the present invention, Figure 5 is an enlarged cross-sectional view along the line V-V of FIG. The same and equivalent parts as those described above and shown in the drawings will be described with the same reference numerals for convenience of description. As shown in these figures, the rotary shaft 61 of the hermetic rotary compressor is provided in the shaft hole 42 of the rotor 23 and the upper bearing member 41 and the shaft hole 52 of the lower bearing member 51, respectively. The roller 25 is coupled around the body 25, the thrust portion 28 contacting the upper surface of the lower bearing member 51, and an extended radius than the thrust portion 28. The eccentric portion 29 and the oil receiving portion 63 is formed to be recessed upward on the bottom surface of the thrust portion 28 to accommodate the oil 18 therein.

바디(25)의 축심에는 오일(18)이 상향 급송될 수 있도록 오일공급로(26)가 형성되어 있으며, 바디(25)의 하단에는 오일(18)을 펌핑할 수 있도록 오일펌프(30)가 결합되어 있다.An oil supply path 26 is formed at the center of the body 25 so that the oil 18 can be upwardly fed, and an oil pump 30 is formed at the bottom of the body 25 to pump the oil 18. Are combined.

바디(25)의 하부영역에는 상부베어링부재(41) 및 하부베어링부재(51)의 저부면 및 상부면에 대응되는 높이를 가지고 바디(25)의 중심(C1)에 대해 편심된 중심(C2)를 가지는 스러스트부(28)가 형성되어 있으며, 스러스트부(28)에는 스러스트부(28)의 중심(C2)에 대해 이격된 중심(C3)을 가지며 스러스트부(28)의 반경에 비해 확장된 반경을 가지는 편심부(29)가 형성되어 있다. 스러스트부(28)의 상측및 하측에는 오일공급로(26)를 따라 유동된 오일(18)이 유출될 수 있도록 한 쌍의 오일공(27a,27b)이 각각 형성되어 있다.In the lower region of the body 25, the center C2 eccentric with respect to the center C1 of the body 25 having a height corresponding to the bottom and top surfaces of the upper bearing member 41 and the lower bearing member 51. The thrust portion 28 is formed, and the thrust portion 28 has a center C3 spaced apart from the center C2 of the thrust portion 28 and has an enlarged radius compared to the radius of the thrust portion 28. The eccentric part 29 which has a is formed. On the upper side and the lower side of the thrust part 28, a pair of oil holes 27a and 27b are formed so that the oil 18 which flowed along the oil supply path 26 can flow out.

한편, 스러스트부(28)의 저부면에는 하부베어링부재(51)의 상면과 스러스트부(28)의 저부면이 서로 금속 마찰되는 것을 방지할 수 있도록 오일(18)을 보유할 수 있게 저부면으로 부터 상향 함몰된 오일수용부(63)가 형성되어 있다. 오일수용부(63)는 바디(25)의 중심(C1)에 대해 스러스트부(28)의 중심(C2)이 편심되는 방향에 직각으로 연장된 직선 그루브 형태로 형성되어 있다.On the other hand, the bottom surface of the thrust portion 28 to the bottom surface to hold the oil 18 to prevent the upper surface of the lower bearing member 51 and the bottom surface of the thrust portion 28 from metal friction with each other. From the oil receiving portion 63 recessed upward is formed. The oil receiving portion 63 is formed in the form of a straight groove extending at right angles to the direction in which the center C2 of the thrust portion 28 is eccentric with respect to the center C1 of the body 25.

이러한 구성에 의하여, 전동모터부(21)에 전원이 인가되면 회전자(23) 및 회전축(61)은 일체로 회전되고, 이에 의해 케이싱(11)의 저부에 수용된 오일(18)은 오일펌프(30)에 의해 펌핑되어 오일공급로(26)를 따라 상향 유동하게 된다. 오일공급로(26)를 따라 유동되는 오일(18)중 일부는 오일공(27a,27b)을 통해 스러스트부(28)의 상면 및 저부면 측으로 각각 유출된다. 하측의 오일공(27b)을 통해 유출된 오일(18)중 일부는 스러스트부(28)의 저부면에 형성된 오일수용부(63)의 내부에 잔류하게 되어 스러스트부(28)의 저부면과 하부베어링부재(51)의 상면이 상호 금속마찰되는 것을 방지하여 금속마찰에 기인한 강제 마모 및 소음 발생을 억제하게 된다.By this configuration, when power is applied to the electric motor unit 21, the rotor 23 and the rotating shaft 61 is integrally rotated, whereby the oil 18 accommodated in the bottom of the casing 11 is an oil pump ( It is pumped by 30 to flow upward along the oil feed passage 26. Some of the oil 18 flowing along the oil supply path 26 flows out through the oil holes 27a and 27b to the top and bottom surfaces of the thrust portion 28, respectively. Some of the oil 18 leaked out through the lower oil hole 27b remains in the oil receiving portion 63 formed on the bottom surface of the thrust portion 28, so that the bottom surface and the bottom of the thrust portion 28 are lower. The upper surface of the bearing member 51 is prevented from mutually metal friction to suppress the occurrence of forced wear and noise caused by the metal friction.

도 6은 본 발명의 다른 실시예에 따른 밀폐형 회전식 압축기의 축선방향을 따른 측면도이다. 도시된 바와 같이, 본 밀폐형 회전식 압축기의 회전축(71)은, 회전자(23)와 상부베어링부재(41) 및 하부베어링부재(51)의 각 축공(42,52)에 삽입결합되는 바디(25)와, 바디(25)의 중심(C1)에 대해 이격된 중심(C2)을 가지고 저부면이 하부베어링부재(51)의 상면에 슬라이딩 접촉되는 스러스트부(28)와, 스러스트부(28)의 중심(C2)에 대해 이격된 중심(C3)을 가짐과 아울러 확장된 반경을 가지도록 형성되며 둘레에 롤러(33)가 결합되는 편심부(29)와, 스러스트부(28)의 저부면에 오일(18)이 수용될 수 있도록 상향 함몰되게 형성되는 오일수용부(73)를 포함하여 구성되어 있다.6 is a side view along the axial direction of the hermetic rotary compressor according to another embodiment of the present invention. As shown, the rotary shaft 71 of the hermetic rotary compressor, the body 25 is inserted into the shaft holes 42 and 52 of the rotor 23, the upper bearing member 41 and the lower bearing member 51. ), A thrust portion 28 having a center C2 spaced apart from the center C1 of the body 25, the bottom surface of which is in sliding contact with the upper surface of the lower bearing member 51, and the thrust portion 28 of the thrust portion 28. Oil is formed on the bottom surface of the thrust portion 28 and the eccentric portion 29 having a center C3 spaced from the center C2 and having an extended radius and having a roller 33 coupled therebetween. It is configured to include an oil receiving portion 73 is formed to be recessed upward so that 18 is accommodated.

본 회전축(71)의 오일수용부(73)는, 스러스트부(28)의 저부면으로 부터 상향 함몰됨과 동시에 원형 고리 형상을 이루도록 둘레방향을 따라 연장된 그루브 형태로 형성되어 있으며, 오일수용부(73)의 중심(C4)은 스러스트부(28)의 중심(C2)에 대해 편심되어 있다.The oil receiving portion 73 of the rotary shaft 71 is formed in a groove shape extending along the circumferential direction so as to be recessed upward from the bottom surface of the thrust portion 28 and to form a circular ring shape, and an oil receiving portion ( The center C4 of 73 is eccentric with respect to the center C2 of the thrust portion 28.

도 4 및 도 5와 관련하여 전술한 실시예에서는, 바디의 중심에 대해 스러스트부의 중심이 편심되는 방향에 대해 직각되게 배치되도록 오일수용부를 구성하고, 도 6과 관련하여 전술한 실시예에서는 스러스트부의 중심에 대해 편심된 원형 고리 형상의 오일수용부를 구성한 경우를 예를 들어 설명하고 있지만, 스러스트부의 저부면에 상향 함몰되고 저부면에 서로 소정 거리 이격되게 배치된 복수의 오일수용홈의 형태로 구성할 수도 있다. 또한, 오일수용부를 스러스트부의 저부면에 바디의 중심에 대해 편심되는 방향과 나란하게 연장되도록 구성할 수도 있으며, 오일수용부를 복수로 구성할 수도 있다.In the embodiment described above with reference to FIGS. 4 and 5, the oil receiving portion is configured to be disposed perpendicular to the direction in which the center of the thrust portion is eccentric with respect to the center of the body, and in the embodiment described with reference to FIG. 6, the thrust portion Although the case of configuring a circular annular oil receiving portion eccentric with respect to the center has been described as an example, it may be configured in the form of a plurality of oil receiving grooves which are recessed upward on the bottom surface of the thrust portion and spaced apart from each other by a predetermined distance from the bottom surface. It may be. In addition, the oil receiving portion may be configured to extend in parallel with the direction eccentric to the center of the body on the bottom surface of the thrust portion, it may be configured a plurality of oil receiving portion.

이상 설명한 바와 같이, 본 발명에 따르면, 회전자와 상부베어링부재 및 하부베어링부재의 각 축공에 수용결합되는 바디와, 바디의 중심에 대해 편심되고 저부면이 하부베어링부재와 슬라이딩 접촉되는 스러스트부와, 스러스트부에 대해 편심되도록 형성되고 둘레에 롤러가 결합되는 편심부와, 스러스트부의 저부면에 상향 함몰되게 형성되어 내부에 오일을 수용하는 오일수용부를 마련함으로써, 오일 공급의 불균형에 기인한 금속 마찰을 방지하여 강제 마모 및 소음 발생을 억제할 수 있고 압축기의 성능을 향상시킬 수 있는 밀폐형 회전식 압축기의 회전축이 제공된다.As described above, according to the present invention, a body accommodated in each shaft hole of the rotor, the upper bearing member and the lower bearing member, and a thrust portion which is eccentric with respect to the center of the body and whose bottom surface is in sliding contact with the lower bearing member; By providing an eccentric portion formed to be eccentric with respect to the thrust portion and having a roller coupled therebetween, and an oil receiving portion formed to be recessed upward at the bottom surface of the thrust portion to receive oil therein, thereby causing metal friction due to an imbalance in oil supply. It is possible to prevent the occurrence of forced wear and noise by preventing the rotation of the rotary compressor of the hermetic rotary compressor that can improve the performance of the compressor.

Claims (4)

고정자 및 회전자를 구비한 전동모터와, 상하측이 개방된 실린더와, 상기 실린더의 상측 및 하측을 각각 차단하도록 결합되고 중앙에 축공이 각각 형성되어 있는 상부베어링부재 및 하부베어링부재와, 상기 실린더의 내경면을 따라 선회하면서 냉매를 압축하는 롤러를 구비한 밀폐형 회전식 압축기에 있어서,An electric motor having a stator and a rotor, a cylinder having upper and lower sides open, an upper bearing member and a lower bearing member coupled to block the upper and lower sides of the cylinder, respectively, and having shaft holes formed in the center thereof, and the cylinder A hermetic rotary compressor comprising a roller for compressing a refrigerant while turning along an inner diameter surface thereof 상부영역은 상기 전동모터의 회전자 및 상부베어링부재의 축공이 결합되고 하부영역은 상기 하부베어링부재의 축공이 결합되는 바디와;The upper region is the body and the shaft hole of the rotor and the upper bearing member of the electric motor is coupled and the lower region is a body coupled to the shaft hole of the lower bearing member; 상기 바디의 중심에 대해 편심되게 형성되고 저부면이 상기 하부베어링부재의 상면에 상대운동가능하게 접촉되는 스러스트부와;A thrust portion which is formed eccentrically with respect to the center of the body and whose bottom surface is in relative movement with the upper surface of the lower bearing member; 상기 스러스트부에 대해 편심되고 상기 스러스트부에 비해 확장된 반경을 가지도록 형성되며 둘레에 상기 롤러가 결합되는 편심부와;An eccentric portion which is eccentric with respect to the thrust portion and has an extended radius as compared with the thrust portion, and wherein the roller is coupled around the thrust portion; 상기 스러스트부의 저부면에 상향 함몰되게 형성되어 오일을 수용하는 오일수용부를 포함하는 것을 특징으로 하는 밀폐형 회전식 압축기의 회전축.Rotating shaft of the hermetic rotary compressor, characterized in that it comprises an oil receiving portion is formed to be recessed upward on the bottom surface of the thrust portion for accommodating oil. 제1항에 있어서,The method of claim 1, 상기 오일수용부는 상기 스러스트부의 저부면으로부터 상향 함몰되고 상기 저부면의 판면방향을 따라 연장된 그루브 형상인 것을 특징으로 하는 밀폐형 회전식 압축기의 회전축.The oil receiving portion is a rotary shaft of the hermetic rotary compressor, characterized in that the groove shape which is recessed upward from the bottom surface of the thrust portion and extends along the plate surface direction of the bottom surface. 제2항에 있어서,The method of claim 2, 상기 오일수용부는 상기 바디의 중심에 대한 상기 스러스트부의 편심방향에 직각되게 형성된 것을 특징으로 하는 밀폐형 회전식 압축기의 회전축.And the oil receiving part is formed perpendicular to the eccentric direction of the thrust part with respect to the center of the body. 제2항에 있어서,The method of claim 2, 상기 오일수용부는 상기 바디의 중심에 대해 편심된 원형 고리 형상인 것을 특징으로 하는 밀폐형 회전식 압축기의 회전축.The oil receiving part is a rotating shaft of the hermetic rotary compressor, characterized in that the circular ring shape eccentric with respect to the center of the body.
KR1020030037550A 2003-06-11 2003-06-11 Shaft for hermetic rotary compressor KR20040106728A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912910A (en) * 2014-03-11 2015-09-16 珠海凌达压缩机有限公司 Crankshaft and compressor

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JPS61126394A (en) * 1984-11-22 1986-06-13 Mitsubishi Electric Corp Rotary compressor
JPH04191494A (en) * 1990-11-22 1992-07-09 Matsushita Refrig Co Ltd Closed type rotary compressor
JPH04265488A (en) * 1991-02-20 1992-09-21 Matsushita Electric Ind Co Ltd Rotary type enclosed compressor
JPH10281085A (en) * 1997-04-03 1998-10-20 Zexel Corp Scroll compressor
KR20020000611A (en) * 2000-06-26 2002-01-05 구자홍 Lubrication structure for rotary compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61126394A (en) * 1984-11-22 1986-06-13 Mitsubishi Electric Corp Rotary compressor
JPH04191494A (en) * 1990-11-22 1992-07-09 Matsushita Refrig Co Ltd Closed type rotary compressor
JPH04265488A (en) * 1991-02-20 1992-09-21 Matsushita Electric Ind Co Ltd Rotary type enclosed compressor
JPH10281085A (en) * 1997-04-03 1998-10-20 Zexel Corp Scroll compressor
KR20020000611A (en) * 2000-06-26 2002-01-05 구자홍 Lubrication structure for rotary compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912910A (en) * 2014-03-11 2015-09-16 珠海凌达压缩机有限公司 Crankshaft and compressor
CN104912910B (en) * 2014-03-11 2018-12-04 珠海格力电器股份有限公司 Crankshaft and compressor

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