KR20010026315A - Rotary compressor - Google Patents

Rotary compressor Download PDF

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Publication number
KR20010026315A
KR20010026315A KR1019990037574A KR19990037574A KR20010026315A KR 20010026315 A KR20010026315 A KR 20010026315A KR 1019990037574 A KR1019990037574 A KR 1019990037574A KR 19990037574 A KR19990037574 A KR 19990037574A KR 20010026315 A KR20010026315 A KR 20010026315A
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KR
South Korea
Prior art keywords
cylinder
rotary compressor
rolling piston
rotor
slot
Prior art date
Application number
KR1019990037574A
Other languages
Korean (ko)
Inventor
정인수
Original Assignee
구자홍
엘지전자 주식회사
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Publication date
Application filed by 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019990037574A priority Critical patent/KR20010026315A/en
Publication of KR20010026315A publication Critical patent/KR20010026315A/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
    • F04C18/30—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
    • 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
    • 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
    • F04C29/0035—Equalization of pressure pulses
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/40—Electric motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

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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 hermetic rotary compressor is provided to achieve an improved operation performance of the compressor by preventing wear at the inner periphery of the cylinder and lock between the cylinder and the rolling piston. CONSTITUTION: A hermetic rotary compressor comprises a closed container(21) forming an outer case; a stator(22) fixed at the inner periphery of the closed container; a rotor(23) having an upper balance weight(23a) and a lower balance weight(23b); a rotational axis(24) having a concentric portion(24b) compressively fitted to the inner periphery of the rotor and an eccentric portion(24a) formed at the lower portion of the rotational axis; a cylinder(27) surrounding the eccentric portion of the rotational axis and which is coupled to an upper bearing(25) and a lower bearing(26) via a bolt(27a); a rolling piston(28) fitted to the eccentric portion of the rotational axis and which rotates contacting the inner periphery of the cylinder; and a vane(30) slidably contacting the outer periphery of the rolling piston so as to divide the interior of the cylinder into a high pressure section(H) and a lower pressure section(L). The cylinder has an upper slot(27c) and a lower slot which are shaped as a circular arc with a predetermined depth and width and formed at the inner periphery of the upper surface and the lower surface of the cylinder.

Description

밀폐형 회전식 압축기{ROTARY COMPRESSOR}Hermetic rotary compressor {ROTARY COMPRESSOR}

본 발명은 밀폐형 회전식 압축기에 관한 것으로서, 보다 상세하게는 밀폐형 회전식 압축기의 실린더에서 발생되는 마모 및 로킹 현상을 방지하여 압축기의 운전성능을 향상시키도록 한 밀폐형 회전식 압축기에 관한 것이다.The present invention relates to a hermetic rotary compressor, and more particularly, to a hermetic rotary compressor to prevent wear and locking occurring in a cylinder of the hermetic rotary compressor to improve the operating performance of the compressor.

일반적인 밀폐형 회전식 압축기는 도 1에 도시된 바와 같이, 소정의 내부체적을 갖고 압축기의 외부케이스를 이루는 밀폐용기(1)와, 상기 밀폐용기(1)의 내부에서 그 내주부에 연하여 고정되는 고정자(2)와 그 내측에서 상부 밸런스웨이트(3a)와 하부 밸런스웨이트(3b)가 설치되는 회전자(3) 등으로 이루어지는 전동기구부가 구성되며, 상기 회전자(3)의 내경에 압입되는 환봉 형상의 동심부(4a)와 그 하부에 일측으로 편심되어 있는 편심부(4a)가 형성된 회전축(4)과, 상기 회전축(4)의 편심부(4a)를 감싸며 상부베어링(5) 및 하부베어링(6)과 함께 볼트(7a)에 의해 결합되는 실린더(7)와, 상기 회전축(4)의 편심부(4a)에 삽입되어 실린더(7)의 내경을 접하면서 자전 및 공전하는 롤링피스톤(8)과, 상기 롤링피스톤(8)의 외주면과 슬라이딩 접촉되면서 실린더(7)내부를 고압부와 저압부로 분리하며 직선운동하는 베인(10) 등으로 이루어지는 압축기구부로 구성된다.As shown in FIG. 1, a general hermetic rotary compressor has a predetermined inner volume and a stator fixed to an inner circumference of the hermetically sealed container 1 and an inner case of the compressor. (2) and an electric mechanism portion made of a rotor 3 or the like in which an upper balance weight 3a and a lower balance weight 3b are installed, and a round bar shape press-fitted into the inner diameter of the rotor 3. The upper shaft 5 and the lower bearing circumferentially surrounding the eccentric portion 4a of the rotary shaft 4 and the eccentric portion 4a formed on the concentric portion 4a and the lower portion thereof. 6 and a rolling piston 8 inserted into the eccentric portion 4a of the rotating shaft 4 and rotating and revolving while contacting the inner diameter of the cylinder 7 together with the cylinder 7 coupled by the bolt 7a. And a high pressure inside the cylinder 7 while in sliding contact with the outer circumferential surface of the rolling piston 8. Compressor section consisting of a vane (10), etc., which are separated into a portion and a low pressure portion and linearly moving.

그리고 상기 밀폐용기(1)의 하면에는 슬라이딩되는 부분에 공급되는 오일이 채워져 있고, 상기 베인(10)에 의해 형성되는 고압부는 실린더(7)의 일측에서 압축된 냉매가스를 토출할 수 있는 토출구(7a)가 형성되며, 상기 실린더(7)의 저압부는 상기 밀폐용기(1)의 측부에 설치되는 어큐뮬레이터(9)로부터 냉매가스가 유입되는 흡입구(7b)가 형성된다.And the lower surface of the sealed container (1) is filled with the oil supplied to the sliding portion, the high pressure portion formed by the vanes (10) discharge port for discharging the refrigerant gas compressed from one side of the cylinder ( 7a) is formed, and the low pressure portion of the cylinder 7 is formed with a suction port 7b through which the refrigerant gas flows from the accumulator 9 installed at the side of the sealed container 1.

상기와 같은 구성을 갖는 종래 밀폐형 회전식 압축기의 작동관계를 설명하면 다음과 같다.Referring to the operation of the conventional hermetic rotary compressor having the configuration as described above are as follows.

상기 밀폐형 회전식 압축기는 고정자(2)에 전원이 인가되어 회전자(3)가 회전되면, 회전자(3)와 함께 고정된 회전축(4)이 회전되어 회전축(4)의 편심부(4a)에 결합된 롤링피스톤(8)이 실린더(7) 내부를 베인(10)과 접촉된 상태에서 편심 회전하게 되고, 상기 회전축(4)과 롤링피스톤(8)의 회전에 의해 어큐뮬레이터(9)로 유입된 저온저압의 냉매가스가 실린더(7) 내부로 흡입되어 고온고압의 상태로 압축되며, 상기 압축된 냉매가스는 일정압 이상시 실린더(7)의 외부로 토출되어 고정자(2)와 회전자(3)의 사이 및 고정자(2)와 밀폐용기(1) 사이의 틈새를 통하여 밀폐용기(1)의 상부에서 외부로 토출된다.In the hermetic rotary compressor, when power is applied to the stator 2 and the rotor 3 rotates, the rotary shaft 4 fixed together with the rotor 3 rotates to the eccentric portion 4a of the rotary shaft 4. The combined rolling piston 8 is eccentrically rotated in contact with the vane 10 inside the cylinder 7, and is introduced into the accumulator 9 by the rotation of the rotating shaft 4 and the rolling piston 8. The refrigerant gas of low temperature and low pressure is sucked into the cylinder 7 and compressed to a state of high temperature and high pressure. The compressed refrigerant gas is discharged to the outside of the cylinder 7 when a certain pressure or more is exceeded, so that the stator 2 and the rotor 3 ) Is discharged from the upper portion of the sealed container 1 to the outside through the gap between the stator 2 and the sealed container (1).

그러나, 종래의 밀폐형 회전식 압축기는 상기 실린더(7)의 내경부와 롤링피스톤(8)의 외경부의 틈새가 약 10 내지 20 μm로서 매우 작으므로 접촉부에 유막이 형성될 공간이 부족하여 고체마찰 내지는 경계마찰의 상태가 유지되어 접촉부에 마모가 심하게 발생되며, 변형 등과 같은 비정상 상태가 발생될 경우에는 실린더(7)와 롤링피스톤(8)이 로킹(Locking)되어 회전되지 못하는 문제점이 있었다.However, in the conventional hermetic rotary compressor, the clearance between the inner diameter of the cylinder 7 and the outer diameter of the rolling piston 8 is about 10 to 20 μm, which is very small. The friction state is maintained, the wear is badly generated in the contact portion, when an abnormal state such as deformation occurs, there was a problem that the cylinder (7) and the rolling piston (8) is locked (rotated) and can not be rotated.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 실린더의 내경부에서 발생되는 마모 및 로킹현상을 방지하여 압축기의 운전성능을 향상시킬 수 있는 밀폐형 회전식 압축기를 제공하는 데 있다.The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a sealed rotary compressor that can improve the operating performance of the compressor by preventing wear and locking phenomenon occurring in the inner diameter of the cylinder. To provide.

도 1은 일반적인 밀폐형 회전식 압축기의 종단면도.1 is a longitudinal sectional view of a typical hermetic rotary compressor.

도 2는 종래 밀폐형 회전식 압축기에서 실린더의 평면도.Figure 2 is a plan view of a cylinder in a conventional hermetic rotary compressor.

도 3a는 본 발명의 제1실시례에 따른 밀폐형 회전식 압축기에서 실린더의 평면도.Figure 3a is a plan view of a cylinder in the hermetic rotary compressor according to the first embodiment of the present invention.

도 3b는 본 발명의 제1실시례에 따른 밀폐형 회전식 압축기에서 압축기구부의 단면도.Figure 3b is a cross-sectional view of the compression mechanism in the hermetic rotary compressor according to the first embodiment of the present invention.

도 4a는 본 발명의 제2실시례에 따른 밀폐형 회전식 압축기에서 실린더의 평면도.Figure 4a is a plan view of a cylinder in the hermetic rotary compressor according to the second embodiment of the present invention.

도 4b는 본 발명의 제2실시례에 따른 밀폐형 회전식 압축기에서 압축기구부의 단면도.Figure 4b is a cross-sectional view of the compression mechanism in the hermetic rotary compressor according to the second embodiment of the present invention.

〈 도면의 주요부분에 대한 부호설명〉<Code Description of Major Parts of Drawings>

21 : 밀폐용기 24 : 회전축21: sealed container 24: rotating shaft

24a: 편심부 24b: 동심부24a: eccentric 24b: concentric

25 : 상부베어링 26 : 하부베어링25: upper bearing 26: lower bearing

27 : 실린더 27a: 토출구27: cylinder 27a: discharge port

27b: 흡입구 27c: 상부슬롯트27b: inlet 27c: upper slot

27d: 하부슬롯트 28 : 롤링피스톤27d: lower slot 28: rolling piston

상기 목적을 달성하기 위하여, 본 발명인 밀폐형 회전식 압축기는 외부케이스를 이루는 밀폐용기와, 상기 밀폐용기의 내주부에 연하여 고정되는 고정자와, 그 내측에서 상부 밸런스웨이트와 하부 밸런스웨이트가 설치되어 회전하는 회전자와, 상기 회전자의 내경에 압입되는 환봉 형상의 동심부와 그 하부에 일측으로 편심되어 있는 원형 단면의 편심부가 형성된 회전축과, 상기 회전축의 편심부를 감싸며 상부베어링 및 하부베어링과 함께 볼트에 의해 결합되는 실린더와, 상기 회전축의 편심부에 삽입되어 실린더의 내경을 접하면서 자전 및 공전하는 롤링피스톤과, 상기 롤링피스톤의 외주면과 슬라이딩 접촉되면서 실린더 내부를 고압부와 저압부로 분리하며 직선운동하는 베인을 포함하여 구성되는 밀폐형 회전식 압축기에 있어서, 상기 실린더의 상면 및 하면에는 내주부 외측에서 소정의 깊이를 갖고 일정한 폭으로 원호 방향의 슬롯트가 형성된 것을 특징으로 한다.In order to achieve the above object, the present invention is a hermetic rotary compressor, a hermetically sealed container forming an outer case, a stator fixed to an inner circumferential part of the hermetically sealed container, and an upper balance weight and a lower balance weight installed inside the rotating container. A rotor, a rotating shaft having an annular rod-shaped concentric portion press-fitted to the inner diameter of the rotor, and a eccentric portion having a circular cross section eccentrically to one side thereof, and surrounding the eccentric portion of the rotating shaft with bolts together with upper and lower bearings. And a rolling piston inserted into an eccentric portion of the rotating shaft to rotate and rotate while contacting the inner diameter of the rotating shaft, and a vane for linearly moving the cylinder inside into a high pressure portion and a low pressure portion while slidingly contacting the outer circumferential surface of the rolling piston. In the sealed rotary compressor comprising a, of the cylinder The upper and lower surfaces are characterized in that slots are formed in a circular arc direction with a predetermined depth on the outer side of the inner circumference.

이하, 본 발명의 바람직한 실시례를 첨부도면에 의거하여 설명토록 한다.Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings.

도 3a는 본 발명의 제1실시례에 따른 밀폐형 회전식 압축기에서 실린더의 평면도이고, 도 3b는 압축기구부의 단면도로서, 도시된 바와 같이, 제1실시례에 따른 밀폐형 회전식 압축기는 외부케이스를 이루는 밀폐용기(21)와, 상기 밀폐용기(21)의 내주부에 연하여 고정되는 고정자(22)와, 그 내측에서 상부 밸런스웨이트(23a)와 하부 밸런스웨이트(23b)가 설치되어 회전하는 회전자(23)와, 상기 회전자(23)의 내경에 압입되는 환봉 형상의 동심부(24a)와 그 하부에 일측으로 편심되어 있는 원형 단면의 편심부(24a)가 형성된 회전축(24)과, 상기 회전축(24)의 편심부(24a)를 감싸며 상부베어링(25) 및 하부베어링(26)과 함께 볼트(27a)에 의해 결합되는 실린더(27)와, 상기 회전축(24)의 편심부(24a)에 삽입되어 실린더(27)의 내경을 접하면서 자전 및 공전하는 롤링피스톤(28)과, 상기 롤링피스톤(28)의 외주면과 슬라이딩 접촉되면서 실린더(27)내부를 고압부(H)와 저압부(L)로 분리하며 직선운동하는 베인(30)을 포함하여 구성되며, 상기 실린더(27) 상면 및 하면의 내주부 외측에는 소정의 깊이를 갖고 일정한 폭으로 원호 방향의 상부슬롯트(27c) 및 하부슬롯트(27d)가 형성된다.Figure 3a is a plan view of a cylinder in the hermetic rotary compressor according to the first embodiment of the present invention, Figure 3b is a cross-sectional view of the compression mechanism, as shown, the hermetic rotary compressor according to the first embodiment is sealed to form an outer case The rotor 21, the stator 22 which is connected to and fixed to the inner circumference of the hermetic container 21, and the rotor which is installed inside and rotates with the upper balance weight 23a and the lower balance weight 23b. 23, a rotating shaft 24 formed with an annular rod-shaped concentric portion 24a press-fitted to the inner diameter of the rotor 23 and an eccentric portion 24a of a circular cross section eccentrically to one side thereof, and the rotating shaft The cylinder 27 which is enclosed by the eccentric portion 24a of the 24 and is coupled by the bolt 27a together with the upper bearing 25 and the lower bearing 26, and the eccentric portion 24a of the rotating shaft 24. A rolling piston 28 that is inserted and rotates and rotates while contacting the inner diameter of the cylinder 27, and And a vane 30 which linearly moves and separates the inside of the cylinder 27 into the high pressure part H and the low pressure part L while slidingly contacting with the outer circumferential surface of the rolling piston 28, and the upper surface of the cylinder 27 and The upper slot 27c and the lower slot 27d in the arc direction are formed on the outer side of the inner periphery of the lower surface in a predetermined width and have a predetermined width.

그리고, 도 4a는 본 발명의 제2실시례에 따른 밀폐형 회전식 압축기에서 실린더의 평면도이고, 도 4b는 압축기구부의 단면도로서, 도시된 바와 같이, 제2실시례에 따른 밀폐형 회전식 압축기는 상기 실린더(27) 상면의 내주부에서 상기 베인(30)인에 의해 형성되는 고압부(H)의 외측에만 상부슬롯트(27c)가 형성되며, 하부슬롯트(27d)는 형성되지 않는다.4A is a plan view of a cylinder in the hermetic rotary compressor according to the second embodiment of the present invention, and FIG. 4B is a cross-sectional view of the compression mechanism. As shown, the hermetic rotary compressor according to the second embodiment is the cylinder ( 27) The upper slot 27c is formed only on the outer side of the high pressure part H formed by the vanes 30 at the inner circumferential portion of the upper surface, and the lower slot 27d is not formed.

상기와 같은 구성을 갖는 본 발명에 따른 밀폐형 회전식 압축기에 대한 작용을 살펴보면 다음과 같다.Looking at the action on the hermetic rotary compressor according to the present invention having the configuration as described above are as follows.

상기 고정자(22)에 전원이 인가되어 회전자(23)가 회전되면, 회전자(23)와 함께 고정된 회전축(24)이 회전되어 회전축(24)의 편심부(24a)에 결합된 롤링피스톤(28)이 실린더(27) 내부를 베인(30)과 접촉된 상태에서 편심 회전하게 되고, 상기 회전축(24)과 롤링피스톤(28)의 회전에 의해 어큐뮬레이터(29)로 유입된 저온저압의 냉매가스가 실린더(27) 내부로 흡입되어 고온고압의 상태로 압축되며, 상기 압축된 냉매가스는 일정압 이상시 실린더(27)의 외부로 토출되어 고정자(22)와 회전자(23)의 사이 및 고정자(22)와 밀폐용기(21) 사이의 틈새를 통하여 밀폐용기(21)의 상부에서 외부로 토출된다.When power is applied to the stator 22 and the rotor 23 is rotated, the rotating piston 24 which is fixed together with the rotor 23 is rotated to be coupled to the eccentric portion 24a of the rotating shaft 24. The low-temperature low-pressure refrigerant introduced into the accumulator 29 by the rotation of the rotating shaft 24 and the rolling piston 28 is made of the eccentric rotation of the cylinder 27 in contact with the vane 30. The gas is sucked into the cylinder 27 and compressed to a state of high temperature and high pressure. The compressed refrigerant gas is discharged to the outside of the cylinder 27 at a predetermined pressure or more, between the stator 22 and the rotor 23, and It is discharged from the upper portion of the sealed container 21 to the outside through the gap between the stator 22 and the sealed container 21.

그런데, 상기 실린더(27)에는 소정의 깊이를 갖고 일정한 폭으로 원호 방향의 슬롯트(27c,27d)가 형성되는 바, 도 3a 및 도 3b에 도시된 바와 같이, 상기 실린더(27)의 상하부의 양면에서 내주부의 전체를 둘러싸면서 상부슬롯트(27c)와 하부슬롯트(27d)가 형성되거나, 도 4a 및 도 4b에 도시된 바와 같이, 상기 실린더(27)의 상면에서 내주부의 고압부(H)만을 둘러싸면서 상부슬롯트(27c)만 형성됨으로써, 롤링피스톤(28)의 외경부가 상기 실린더(27)의 내경부에 틈새가 거의 없이 접촉되어도 실린더(27)의 내경부는 슬롯트(27c,27d)의 폭 만큼 탄성적으로 변형되며 유막을 형성하므로 유체마찰에 의한 윤활상태가 유지되어 접촉부의 마모를 감소시키고, 마찰에 의한 발열 및 변형 등을 감소시켜 로킹 등과 같은 비정상 운전을 사전에 방지시킨다.By the way, the cylinder 27 has a predetermined depth and is formed with slots 27c and 27d in the arc direction in a predetermined width, as shown in FIGS. 3A and 3B, upper and lower portions of the cylinder 27. The upper slot 27c and the lower slot 27d are formed while enclosing the entire inner circumferential part on both sides, or as shown in FIGS. 4A and 4B, the high pressure part of the inner circumferential part of the inner circumference of the cylinder 27 is formed. Since only the upper slot 27c is formed while surrounding only H), even if the outer diameter portion of the rolling piston 28 is in contact with the inner diameter portion of the cylinder 27 with little gap, the inner diameter portion of the cylinder 27 is a slot 27c. , 27d) elastically deformed to form an oil film, so that the lubrication state is maintained by fluid friction to reduce contact wear and to reduce heat generation and deformation due to friction to prevent abnormal operation such as locking. Let's do it.

이상에서 설명한 바와 같이, 본 발명에 의한 밀폐형 회전식 압축기는 상기 실린더의 윤활성능을 향상시키기 위하여 실린더 내주부의 외측에 소정의 폭과 깊이를 갖는 슬롯트를 형성함으로써, 롤링피스톤의 외경부가 상기 실린더의 내경부에 틈새가 거의 없이 접촉되어도 실린더의 내경부는 슬롯트의 폭 만큼 탄성적으로 변형되며 유막을 형성하므로 유체마찰에 의한 윤활상태가 유지되어 접촉부의 마모를 감소시키고, 마찰에 의한 발열 및 변형 등을 감소시켜 로킹 등과 같은 비정상 운전을 사전에 방지하여 압축기의 운전성능을 향상시킬 수 있는 효과가 있다.As described above, the hermetic rotary compressor according to the present invention forms a slot having a predetermined width and depth outside the inner circumference of the cylinder in order to improve the lubricating performance of the cylinder. The inner diameter of the cylinder is elastically deformed by the width of the slot and forms an oil film even when there is almost no gap in the inner diameter. Therefore, the lubrication state is maintained by fluid friction to reduce wear of the contact portion, and heat generation and deformation due to friction. It is possible to improve the operation performance of the compressor by preventing the abnormal operation such as locking in advance by reducing the back.

Claims (3)

외부케이스를 이루는 밀폐용기와, 상기 밀폐용기의 내주부에 연하여 고정되는 고정자와, 그 내측에서 상부 밸런스웨이트와 하부 밸런스웨이트가 설치되어 회전하는 회전자와, 상기 회전자의 내경에 압입되는 환봉 형상의 동심부와 그 하부에 일측으로 편심되어 있는 원형 단면의 편심부가 형성된 회전축과, 상기 회전축의 편심부를 감싸며 상부베어링 및 하부베어링과 함께 볼트에 의해 결합되는 실린더와, 상기 회전축의 편심부에 삽입되어 실린더의 내경을 접하면서 자전 및 공전하는 롤링피스톤과, 상기 롤링피스톤의 외주면과 슬라이딩 접촉되면서 실린더 내부를 고압부와 저압부로 분리하며 직선운동하는 베인을 포함하여 구성되는 밀폐형 회전식 압축기에 있어서, 상기 실린더 상면 및 하면의 내주부 외측에는 소정의 깊이를 갖고 일정한 폭으로 원호 방향의 슬롯트가 형성된 것을 특징으로 하는 밀폐형 회전식 압축기.An airtight container forming an outer case, a stator fixed to the inner circumference of the airtight container, a rotor rotating with an upper balance weight and a lower balance weight installed therein, and a round rod press-fitted into the inner diameter of the rotor. A rotating shaft having a concentric portion of a shape and an eccentric portion having a circular cross section eccentric to one side thereof, a cylinder surrounding the eccentric portion of the rotating shaft and coupled by a bolt together with an upper bearing and a lower bearing, and inserted into an eccentric portion of the rotating shaft. In the closed rotary compressor comprising a rolling piston which rotates and rotates while contacting the inner diameter of the cylinder, and a vane which linearly moves while separating the inside of the cylinder into a high pressure portion and a low pressure portion while sliding contact with an outer circumferential surface of the rolling piston. Outside the inner circumference of the upper and lower surfaces have a predetermined depth and have a constant width Sealed rotary compressor, characterized in that the arc slot formed. 제 1항에 있어서, 상기 슬롯트는 상기 실린더의 단면상에 형성된 것을 특징으로 하는 밀폐형 회전식 압축기.The hermetic rotary compressor according to claim 1, wherein the slot is formed on a cross section of the cylinder. 제 1항 또는 제 2항에 있어서, 상기 슬롯트는 상기 실린더 내주부에서 상기 베인에 의해 형성되는 고압부의 외측에 형성된 것을 특징으로 하는 밀폐형 회전식 압축기.The hermetic rotary compressor according to claim 1 or 2, wherein the slot is formed outside the high pressure portion formed by the vanes at the inner circumference of the cylinder.
KR1019990037574A 1999-09-04 1999-09-04 Rotary compressor KR20010026315A (en)

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