KR20020023506A - Structure for reducing load of rotary compressor - Google Patents

Structure for reducing load of rotary compressor Download PDF

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Publication number
KR20020023506A
KR20020023506A KR1020000055809A KR20000055809A KR20020023506A KR 20020023506 A KR20020023506 A KR 20020023506A KR 1020000055809 A KR1020000055809 A KR 1020000055809A KR 20000055809 A KR20000055809 A KR 20000055809A KR 20020023506 A KR20020023506 A KR 20020023506A
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KR
South Korea
Prior art keywords
bearing
rolling piston
contact
sub
rotary compressor
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KR1020000055809A
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Korean (ko)
Inventor
정인수
Original Assignee
구자홍
엘지전자주식회사
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Priority to KR1020000055809A priority Critical patent/KR20020023506A/en
Publication of KR20020023506A publication Critical patent/KR20020023506A/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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer 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
    • F04C2240/00—Components
    • F04C2240/70—Use of multiplicity of similar components; Modular construction

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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: A load reduction structure for rotary compressor is provided to reduce mechanical friction loss and load by reducing contact area among rolling piston, main bearing and sub bearing, while reducing power consumption. CONSTITUTION: A load reduction structure comprises a rolling piston(51) installed to line contact the inner periphery of a compression chamber of a cylinder, and which operates by a rotating shaft; and a main bearing(53) and a sub bearing(55) installed onto and beneath the cylinder so as to support the rotating shaft. Grooves(57a,57b,57c,57d) are formed at least one surface from among the contact surfaces of the main bearing, rolling piston and sub bearing, so as to reduce the contact surface of the main bearing, rolling piston and sub bearing.

Description

로터리 압축기의 부하 저감 구조{STRUCTURE FOR REDUCING LOAD OF ROTARY COMPRESSOR}STRUCTURE FOR REDUCING LOAD OF ROTARY COMPRESSOR}

본 발명은 로터리 압축기에 관한 것으로서, 특히 기계적인 마찰손실 및 부하를 저감시키기 위하여 냉매가스의 압축을 위해 서로 접촉되는 습동부품들인 메인베어링, 롤링피스톤, 서브베어링 사이의 접촉면적을 감소시키는 로터리 압축기의 부하 저감 구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary compressor, and more particularly to a rotary compressor which reduces the contact area between main bearings, rolling pistons, and sub bearings, which are sliding parts in contact with each other for compressing refrigerant gas in order to reduce mechanical friction loss and load. It relates to a load reduction structure.

도 1은 종래 기술에 따른 로터리 압축기의 종단면도이고, 도 2는 종래의 메인베어링 및 서브베어링이 도시된 사시도이고, 도 3은 종래의 롤링피스톤이 도시된 사시도이다.1 is a longitudinal sectional view of a rotary compressor according to the prior art, FIG. 2 is a perspective view showing a conventional main bearing and a sub bearing, and FIG. 3 is a perspective view showing a conventional rolling piston.

상기한 도 1 내지 도 3을 참조하면, 종래의 로터리 압축기는 크게 소정의 내부체적을 갖는 케이스(1)와, 상기 케이스(1) 내부에 설치되어 구동력을 발생시키는 전동기구부와, 상기 전동기구부의 구동력을 전달받아 냉매가스를 압축하는 압축기구부로 구성된다.1 to 3, a conventional rotary compressor includes a case 1 having a large internal volume, an electric mechanism unit installed inside the case 1 to generate a driving force, and the electric mechanism unit. Compressor section for compressing the refrigerant gas receives the driving force.

여기서, 상기 전동기구부는 케이스(1) 내에 고정 결합되는 고정자(2)와, 상기 고정자(2)의 내부에 삽입되어 회전하는 회전자(3)를 포함하여 구성된다.In this case, the power mechanism comprises a stator (2) fixedly coupled in the case (1), and a rotor (3) inserted into the stator (2) to rotate.

또한, 상기 압축기구부는 상기 회전자(3)의 내경에 압입되고 하부에 편심부(4a)가 형성된 회전축(4)과, 내부에 가스가 흡입되고 압축되는 압축실(P)이 구비되어 케이스(1)의 내부에 설치됨과 아울러 그 압축실(P')에 상기 회전축(4)의 편심부(4a)가 삽입되는 실린더(5)와, 상기 회전축(4)에 삽입됨과 아울러 실린더(5)의 상, 하부에 볼트의 체결에 의해 각각 결합되어 회전축(4)을 지지하는 메인베어링(7) 및 서브베어링(8)과, 상기 실린더(5)의 압축실(P) 내주면에 선접촉되도록 회전축의 편심부(4a)에 삽입되어 회전축(4)의 회전에 따라 자전 및 공전하는 롤링피스톤(9)과, 상기 실린더(5)의 일측에 직선운동 가능하도록 삽입되어 그 단부가 상기 롤링피스톤(9)의 외주면과 슬라이딩 접촉되면서 상기 압축실(P')을 흡입부와 압축부로 구획하는 베인(미도시)을 포함하여 구성된다.In addition, the compression mechanism is provided with a rotary shaft 4, which is pressed into the inner diameter of the rotor 3, the eccentric portion 4a is formed at the bottom, and a compression chamber P in which gas is sucked and compressed therein. 1) and a cylinder 5 into which the eccentric portion 4a of the rotating shaft 4 is inserted into the compression chamber P ', and inserted into the rotating shaft 4, The main shaft 7 and the sub bearing 8 which are coupled to each other by fastening the bolts to the upper and lower portions and support the rotating shaft 4 and the inner circumferential surfaces of the compression chamber P of the cylinder 5 are in line contact with each other. A rolling piston 9 inserted into the eccentric portion 4a and rotating and rotating according to the rotation of the rotary shaft 4, and inserted into one side of the cylinder 5 so as to be linearly movable, and an end of the rolling piston 9 Sliding contact with the outer peripheral surface of the compression chamber (P ') including a vane (not shown) for partitioning the suction and compression unit It is.

또한, 상기 실린더(5)의 일측에는 압축된 냉매가스를 토출시키는 토출포트(5a)가 형성되고, 상기 메인베어링(7)의 일측에는 상기 토출포트(5a)와 연통되도록 토출공(7a)이 형성되며, 상기 케이스(1)의 상측에는 압축된 가스가 외부로 토출되는 토출관(10)이 결합되어 있다.In addition, a discharge port 5a for discharging the compressed refrigerant gas is formed at one side of the cylinder 5, and a discharge hole 7a is formed at one side of the main bearing 7 so as to communicate with the discharge port 5a. Is formed, the upper side of the case 1 is coupled to the discharge tube 10 for discharging the compressed gas to the outside.

또한, 상기 메인베어링(7)의 상면에는 냉매가스가 일정압 이상이 되면 상기 토출공(7a)을 오픈시키는 토출밸브(13) 및 이 토출밸브(13)의 열림 상태를 한정, 지지하는 리테이너(14)가 함께 결합되어 있다.In addition, an upper surface of the main bearing 7 has a discharge valve 13 for opening the discharge hole 7a when the refrigerant gas is above a predetermined pressure, and a retainer for limiting and supporting an open state of the discharge valve 13. 14) are joined together.

또한, 상기 메인베어링(7)의 상부에는 냉매가스의 토출 소음을 저감시키기 위한 머플러(Muffler)(16)가 복개되어 결합되어 있다.In addition, the upper portion of the main bearing 7 is coupled to the muffler (16) to reduce the discharge noise of the refrigerant gas is coupled.

또한, 상기 실린더(5)의 일측에는 냉매가스가 압축공간(P)으로 유입되는 흡입구(5b)가 형성되고, 상기 흡입구(5b)에는 케이스(1)의 측부에 설치되는 어큐뮬레이터(20)와 연결되는 흡입관(12)이 결합되며, 상기 케이스(1)의 저면에는 슬라이딩이 일어나는 부품에 공급되는 오일이 채워져 있다.In addition, an inlet 5b is formed at one side of the cylinder 5 to introduce refrigerant gas into the compression space P, and the inlet 5b is connected to an accumulator 20 installed at the side of the case 1. The suction pipe 12 is coupled, and the bottom surface of the case 1 is filled with oil supplied to the sliding element.

상기와 같이 구성된 종래 기술에 따른 로터리 압축기의 작동은 다음과 같다.Operation of the rotary compressor according to the prior art configured as described above is as follows.

먼저, 전동기구부의 회전자(3)에 전류가 인가되면 상기 회전자(3)가 회전하면서 회전축(4)을 회전시키게 되고, 상기 회전축(4)이 회전되면 회전축(4)의 편심부(4a)에 결합된 롤링피스톤(9)이 베인과 접촉된 상태에서 실린더(5)의 압축실(P)에서 편심 회전하게 된다.First, when a current is applied to the rotor 3 of the electric mechanism part, the rotor 3 rotates to rotate the rotating shaft 4, and when the rotating shaft 4 is rotated, the eccentric portion 4a of the rotating shaft 4 is rotated. In the state in which the rolling piston 9 coupled to the vane is in contact with the vanes, the rolling piston 9 rotates eccentrically in the compression chamber P of the cylinder 5.

상기 롤링피스톤(9)이 편심 회전하게 되면 압축실(P)의 체적이 변화되면서 저온저압의 냉매가스가 흡입관(12)과 흡입구(5b)를 통해 상기 압축실(P')로 흡입되어 고온고압의 상태로 압축된다.When the rolling piston 9 is eccentrically rotated, the volume of the compression chamber P is changed, and the refrigerant gas of low temperature and low pressure is sucked into the compression chamber P 'through the suction pipe 12 and the suction port 5b, thereby causing high temperature and high pressure. Is compressed to a state of.

상기 실린더(5)에서 압축된 냉매가스가 일정압 이상이 되면 메인베어링(7)의 토출공(7a)을 막고 있던 토출밸브(13)가 열리면서 상기한 고온고압의 냉매가스가 토출포트(5a) 및 토출공(7a)을 통해 케이스(1) 내부로 토출된다.When the refrigerant gas compressed in the cylinder 5 is equal to or greater than a predetermined pressure, the discharge valve 13 which is blocking the discharge hole 7a of the main bearing 7 is opened, and the refrigerant gas of the high temperature and high pressure is discharged to the discharge port 5a. And discharge into the case 1 through the discharge hole 7a.

이때, 상기 토출밸브(13)의 열림 정도는 리테이너(14)에 의하여 한정되고, 상기한 냉매가스는 토출 소음이 감소되도록 상기 케이스(1)의 내부로 토출되기 전에 머플러(16)를 거치게 된다.In this case, the opening degree of the discharge valve 13 is limited by the retainer 14, and the refrigerant gas passes through the muffler 16 before being discharged into the case 1 to reduce the discharge noise.

상기 케이스(1)의 내부로 토출된 냉매가스는 고정자(2)와 회전자(3) 사이, 그리고 상기 고정자(2)와 케이스(1) 사이에 각각 형성된 틈을 통하여 상기 케이스(1)의 상측으로 이동된다.The refrigerant gas discharged into the case (1) is the upper side of the case (1) through a gap formed between the stator (2) and the rotor (3), and between the stator (2) and the case (1), respectively Is moved to.

상기와 같이 케이스(1)의 상측으로 이동된 냉매가스는 토출관(10)을 통해 케이스(1)의 외부로 토출된다.As described above, the refrigerant gas moved to the upper side of the case 1 is discharged to the outside of the case 1 through the discharge tube 10.

상기한 바와 같은 로터리 압축기에서는 기계적 마찰손실과 냉매가스의 누설 등을 방지하기 위해 상기 메인베어링(7), 서브베어링(8), 롤링피스톤(9)의 각 접촉면이 약 1.0Rz이하의 조도를 갖도록 상당히 매끄럽게 연삭되어 있다.In the rotary compressor as described above, the contact surfaces of the main bearing 7, the sub bearing 8, and the rolling piston 9 have roughness of about 1.0 Rz or less to prevent mechanical friction loss and leakage of refrigerant gas. Grinded quite smoothly.

그러나, 상기한 종래의 로터리 압축기는 냉매가스의 압축을 위한 롤링피스톤(9)의 구동시 상기 롤링피스톤(9)의 끝단면 전체가 상기 메인베어링(7) 및 서브베어링(8)과 접촉하게 되기 때문에 상기한 각 부품들간의 접촉으로 인한 기계적 마찰손실 및 부하 증가, 각 부품들의 마모가 불가피하여 압축기의 성능 및 신뢰성이 저하되는 문제점이 있었다.However, in the conventional rotary compressor, the entire end surface of the rolling piston 9 comes into contact with the main bearing 7 and the sub bearing 8 when the rolling piston 9 is driven to compress the refrigerant gas. Therefore, mechanical friction loss and load increase due to the contact between the respective parts, wear of each part is inevitable, there is a problem that the performance and reliability of the compressor is lowered.

상기한 바와 같은 문제점을 감안하여 안출한 본 발명의 목적은, 냉매가스의 압축을 위해 서로 접촉되는 습동부품들인 메인베어링, 롤링피스톤, 서브베어링 사이의 접촉면적을 감소시킴으로써 기계적인 마찰손실 및 부하가 저감되고 각 습동부품들의 마모가 억제되어 압축기의 성능 및 신뢰성이 향상되도록 하는 로터리 압축기의 부하 저감 구조를 제공함에 있다.The object of the present invention devised in view of the above problems is to reduce the mechanical friction loss and load by reducing the contact area between the main bearings, the rolling piston, and the sub-bearings, which are sliding parts in contact with each other for the compression of the refrigerant gas. It is to provide a load reduction structure of the rotary compressor to reduce and to suppress the wear of the sliding parts to improve the performance and reliability of the compressor.

도 1은 종래 기술에 따른 로터리 압축기의 종단면도,1 is a longitudinal sectional view of a rotary compressor according to the prior art,

도 2는 종래의 메인베어링 및 서브베어링이 도시된 사시도,2 is a perspective view showing a conventional main bearing and a sub-bearing,

도 3은 종래의 롤링피스톤이 도시된 사시도,3 is a perspective view of a conventional rolling piston,

도 4는 본 발명에 따른 로터리 압축기의 부하 저감 구조가 도시된 분해사시도,4 is an exploded perspective view showing a load reduction structure of a rotary compressor according to the present invention;

도 5는 본 발명의 메인베어링 및 서브베어링이 롤링피스톤과 접촉되는 접촉면이 도시된 평면도,5 is a plan view showing a contact surface of the main bearing and the sub-bearing of the present invention in contact with the rolling piston,

도 6은 본 발명의 롤링피스톤이 메인베어링 및 서브베어링과 접촉되는 접촉면이 도시된 평면도이다.6 is a plan view showing a contact surface of the rolling piston of the present invention in contact with the main bearing and the sub-bearing.

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

51 : 롤링피스톤 53 : 메인메어링51: rolling piston 53: main bearing

55 : 서브베어링 57a, 57b, 57c, 57d : 홈55: sub-bearings 57a, 57b, 57c, 57d: groove

상기한 바와 같은 본 발명의 목적을 달성하기 위하여, 실린더의 압축실 내주면에 선접촉되도록 설치되어 회전축에 의해 작동되는 롤링피스톤과, 상기 실린더의 상측과 하측에 각각 설치되어 상기 회전축을 지지하는 메인베어링 및 서브베어링을 포함하는 로터리 압축기에 있어서, 상기 메인베어링, 롤러, 서브베어링이 각각 서로 접촉되는 접촉면 중 적어도 어느 한 면에는 상기 메인베어링, 롤러, 서브베어링 사이의 접촉면적을 감소시키기 위한 홈이 형성되는 것을 특징으로 하는 로터리 압축기의 부하 저감 구조가 제공된다.In order to achieve the object of the present invention as described above, a rolling piston installed in line contact with the inner circumferential surface of the compression chamber of the cylinder and operated by a rotating shaft, and a main bearing installed on the upper and lower sides of the cylinder to support the rotating shaft, respectively. And a sub bearing, wherein a groove for reducing a contact area between the main bearing, the roller, and the sub bearing is formed on at least one of the contact surfaces where the main bearing, the roller, and the sub bearing are in contact with each other. A load reduction structure of a rotary compressor is provided.

이하, 본 발명의 실시 예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 4는 본 발명에 따른 로터리 압축기의 부하 저감 구조가 도시된 분해사시도이고, 도 5는 본 발명의 메인베어링 및 서브베어링이 롤링피스톤과 접촉되는 접촉면이 도시된 평면도이고, 도 6은 본 발명의 롤링피스톤이 메인베어링 및 서브베어링과 접촉되는 접촉면이 도시된 평면도이다.Figure 4 is an exploded perspective view showing a load reduction structure of the rotary compressor according to the present invention, Figure 5 is a plan view showing a contact surface in contact with the rolling piston of the main bearing and the sub-bearing of the present invention, Figure 6 is a view of the present invention It is a top view which shows the contact surface which a rolling piston contacts a main bearing and a sub bearing.

상기한 도 4 내지 도 6을 참조하면, 본 발명에 따른 로터리 압축기의 부하 저감 구조는 실린더의 압축실 내주면에 선접촉되도록 설치되어 회전축에 의해 작동되는 롤링피스톤(51)과, 상기 실린더의 상측과 하측에 각각 설치되어 상기 회전축을 지지하는 메인베어링(53) 및 서브베어링(55)을 포함하는 것으로서, 상기 메인베어링(53), 롤링피스톤(51), 서브베어링(55)이 각각 서로 접촉되는 접촉면 중 적어도 어느 한 면에는 상기 메인베어링(53), 롤링피스톤(51), 서브베어링(55) 사이의 접촉면적을 감소시키기 위한 홈(57a)(57b)(57c)(57d)이 형성된다.4 to 6, the load reduction structure of the rotary compressor according to the present invention is installed to be in linear contact with the inner circumferential surface of the compression chamber of the cylinder is operated by a rotating shaft and the upper side of the cylinder and The main bearing 53 and the sub-bearing 55, which are respectively installed on the lower side to support the rotating shaft, the contact surface which the main bearing 53, the rolling piston 51, the sub-bearing 55 are in contact with each other Grooves 57a, 57b, 57c and 57d for reducing the contact area between the main bearing 53, the rolling piston 51 and the subbearing 55 are formed on at least one of the surfaces.

즉, 본 발명에 따른 로터리 압축기의 부하 저감 구조에 의하면, 롤링피스톤(51)과 접촉되는 메인베어링(53)의 접촉면에만 홈(57a)이 형성될 수도 있고, 상기 롤링피스톤(51)과 접촉되는 서브베어링(55)의 접촉면에만 홈(57b)이 형성될 수도 있다.That is, according to the load reduction structure of the rotary compressor according to the present invention, the groove 57a may be formed only at the contact surface of the main bearing 53 in contact with the rolling piston 51, and the rolling piston 51 is in contact with the rolling piston 51. The groove 57b may be formed only at the contact surface of the sub bearing 55.

또한, 상기 메인베어링(53)과 서브베어링(55)에 각각 접촉되는 롤링피스톤(51)의 양끝단면에만 각각 홈(57c)(57d)이 형성될 수도 있다.In addition, grooves 57c and 57d may be formed only at both end surfaces of the rolling piston 51 which are in contact with the main bearing 53 and the sub bearing 55, respectively.

또한, 상기와 같이 롤링피스톤(51), 메인베어링(53), 서브베어링(55) 중 하나의 부품에 선택적으로 홈(57a)(57b)(57c)(57d)을 형성시키는 대신, 상기 메인베어링(53), 서브베어링(55), 롤링피스톤(51)의 각 접촉면에 모두 홈(57a)(57b)(57c)(57d)을 형성하여 상기한 각 습동부품들 사이의 접촉면적을 최소화시킬 수도 있다.In addition, instead of forming grooves 57a, 57b, 57c, and 57d on one of the rolling piston 51, the main bearing 53, and the sub-bearing 55 as described above, the main bearing The grooves 57a, 57b, 57c, and 57d may be formed on each of the contact surfaces of the 53, the sub bearing 55, and the rolling piston 51 to minimize the contact area between the sliding parts. have.

여기서, 상기 각 홈(57a)(57b)(57c)(57d)은 접촉면 전체에 걸쳐 링 형태로 형성된다.Here, each of the grooves 57a, 57b, 57c, 57d is formed in a ring shape over the entire contact surface.

또한, 도면에 도시되어 있지 않은 다른 실시 예에 따르면, 상기 각 홈(57a)(57b)(57c)(57d)은 접촉면에 부분적으로 분포된 형태로 형성될 수도 있다.In addition, according to another embodiment not shown in the drawings, each of the grooves 57a, 57b, 57c, 57d may be formed to be partially distributed on the contact surface.

마지막으로, 상기 각 홈(57a)(57b)(57c)(57d)은 그 폭과 깊이가 각각 2.5㎜이하가 되도록 형성되며, 이중에서도 0.5∼2.0㎜이내의 범위에서 형성하는 것이 바람직하다.Finally, each of the grooves 57a, 57b, 57c and 57d is formed so that its width and depth are 2.5 mm or less, respectively, preferably in the range of 0.5 to 2.0 mm.

상기와 같이 구성된 본 발명에 따른 로터리 압축기의 부하 저감 구조에서는, 냉매가스의 압축을 위한 롤링피스톤(51)의 구동시 상기 롤링피스톤(51)과 접촉되는 메인베어링(53)과 서브베어링(55)은 물론 상기 롤링피스톤(51)에도 각각 서로 접촉되는 접촉면에 홈(57a)(57b)(57c)(57d)이 형성되어 상기 홈(57a)(57b)(57c)(57d)들의 면적만큼 그 접촉면적이 감소되게 된다.In the load reduction structure of the rotary compressor according to the present invention configured as described above, the main bearing 53 and the sub-bearing 55 in contact with the rolling piston 51 when the rolling piston 51 for compressing the refrigerant gas is driven. Of course, grooves 57a, 57b, 57c, and 57d are formed on the contact surfaces that are in contact with each other in the rolling piston 51, respectively, so that the grooves 57a, 57b, 57c, and 57d are in contact with each other. The area will be reduced.

상기에서, 미설명된 참조부호 R은 메인베어링(53) 및 서브베어링(55)과 접촉되는 롤링피스톤(51)의 궤적을 나타낸다.In the above, unexplained reference numeral R denotes the trajectory of the rolling piston 51 in contact with the main bearing 53 and the sub bearing 55.

이상에서 설명한 바와 같이 본 발명에 따른 로터리 압축기의 부하 저감 구조는, 냉매가스의 압축을 위해 서로 접촉되는 습동부품들인 롤링피스톤(51), 메인베어링(53), 서브베어링(55) 사이의 각 접촉면 중 적어도 어느 한 면에는 그 접촉면적을 감소시키기 위한 홈(57a)(57b)(57c)(57d)이 형성되게 되므로 상기 롤링피스톤(51), 메인베어링(53), 서브베어링(55) 사이의 접촉면적이 감소되어 기계적인 마찰손실 및 부하가 저감되고 상기 각 습동부품들의 마모가 억제되며, 이에 따라 압축기의 성능 및 신뢰성이 향상되는 이점이 있다.As described above, the load reduction structure of the rotary compressor according to the present invention includes the contact surfaces between the rolling pistons 51, the main bearings 53, and the sub-bearings 55, which are sliding parts contacted with each other for the compression of the refrigerant gas. Grooves 57a, 57b, 57c, and 57d are formed on at least one of the surfaces to reduce the contact area, so that the rolling piston 51, the main bearing 53, and the sub-bearing 55 are formed. As the contact area is reduced, mechanical friction loss and load are reduced, and wear of the sliding parts is suppressed, thereby improving the performance and reliability of the compressor.

또한, 본 발명은 롤링피스톤(51), 메인베어링(53), 서브베어링(55)의 접촉면에 각각 형성된 홈(57a)(57b)(57c)(57d)들에 유막이 형성되게 되므로 상기한 유막으로 인해 각 습동부품들 사이의 마찰이 감소될 뿐만 아니라 소요동력이 감소되는 이점이 있다.In the present invention, the oil film is formed in the grooves 57a, 57b, 57c, and 57d formed on the contact surfaces of the rolling piston 51, the main bearing 53, and the sub-bearing 55, respectively. As a result, not only the friction between the sliding parts is reduced, but also the required power is reduced.

Claims (4)

실린더의 압축실 내주면에 선접촉되도록 설치되어 회전축에 의해 작동되는 롤링피스톤과, 상기 실린더의 상측과 하측에 각각 설치되어 상기 회전축을 지지하는 메인베어링 및 서브베어링을 포함하는 로터리 압축기에 있어서,In a rotary compressor including a rolling piston installed in line contact with the inner peripheral surface of the compression chamber of the cylinder and operated by a rotating shaft, and installed on the upper and lower sides of the cylinder to support the rotating shaft. 상기 메인베어링, 롤링피스톤, 서브베어링이 각각 서로 접촉되는 접촉면 중 적어도 어느 한 면에는 상기 메인베어링, 롤링피스톤, 서브베어링 사이의 접촉면적을 감소시키기 위한 홈이 형성되는 것을 특징으로 하는 로터리 압축기의 부하 저감 구조.The load of the rotary compressor, characterized in that the groove for reducing the contact area between the main bearing, the rolling piston, the sub-bearing is formed on at least one of the contact surface that the main bearing, the rolling piston, the sub-bearing each contact each other Abatement structure. 제 1항에 있어서, 상기 홈은 접촉면에 부분적으로 분포된 형태로 형성되는 것을 특징으로 하는 로터리 압축기의 부하 저감 구조.The load reduction structure of a rotary compressor according to claim 1, wherein the groove is formed to be partially distributed on the contact surface. 제 1항에 있어서, 상기 홈은 접촉면 전체에 걸쳐 링 형태로 형성되는 것을 특징으로 하는 로터리 압축기의 부하 저감 구조.The load reduction structure of claim 1, wherein the groove is formed in a ring shape over the entire contact surface. 제 1항에 있어서, 상기 홈은 그 폭과 깊이가 각각 2.5㎜이하가 되도록 형성되는 것을 특징으로 하는 로터리 압축기의 부하 저감 구조.The load reduction structure of a rotary compressor according to claim 1, wherein the groove is formed so that its width and depth are 2.5 mm or less, respectively.
KR1020000055809A 2000-09-22 2000-09-22 Structure for reducing load of rotary compressor KR20020023506A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100468469B1 (en) * 2002-06-21 2005-01-27 삼성전자주식회사 Ratary compprersor
KR102003985B1 (en) * 2018-07-03 2019-07-25 한국원자력연구원 Fluid transfer device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100468469B1 (en) * 2002-06-21 2005-01-27 삼성전자주식회사 Ratary compprersor
KR102003985B1 (en) * 2018-07-03 2019-07-25 한국원자력연구원 Fluid transfer device
WO2020009474A1 (en) * 2018-07-03 2020-01-09 한국원자력연구원 Fluid transfer apparatus
US11867179B2 (en) 2018-07-03 2024-01-09 Korea Atomic Energy Research Institute Fluid transfer apparatus with a plurality of rotor housings arranged at different angularity with the neighboring rotor housings

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