KR100304573B1 - Structure for preventing oil discharge in rotary compressor - Google Patents

Structure for preventing oil discharge in rotary compressor Download PDF

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Publication number
KR100304573B1
KR100304573B1 KR1019980048427A KR19980048427A KR100304573B1 KR 100304573 B1 KR100304573 B1 KR 100304573B1 KR 1019980048427 A KR1019980048427 A KR 1019980048427A KR 19980048427 A KR19980048427 A KR 19980048427A KR 100304573 B1 KR100304573 B1 KR 100304573B1
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KR
South Korea
Prior art keywords
oil
rotary compressor
hermetic rotary
refrigerant gas
prevention structure
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KR1019980048427A
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Korean (ko)
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KR20000032086A (en
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김봉현
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구자홍
엘지전자주식회사
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Priority to KR1019980048427A priority Critical patent/KR100304573B1/en
Publication of KR20000032086A publication Critical patent/KR20000032086A/en
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Publication of KR100304573B1 publication Critical patent/KR100304573B1/en

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    • 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
    • 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
    • F04C29/026—Lubricant separation
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding
    • 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
    • F04C2240/50—Bearings
    • 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
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts
    • 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
    • F04C2240/80—Other components
    • F04C2240/806—Pipes for fluids; Fittings therefor

Abstract

본 발명은 밀폐형 회전식 압축기의 유토출 방지구조에 관한 것으로, 종래에는 구동력을 발생시키는 전동기구부를 구성하는 회전자가 회전시 회전자의 원심력에 의해 압축기구부에서 토출된 냉매가스의 회전 유동이 발생하게 되어 밀폐용기의 저면에 채워진 오일과 혼입되어 유 포밍현상이 발생하게 되고, 상기 유 포밍현상으로 인하여 토출관으로 토출되는 냉매가스에 오일이 혼합되어 토출됨으로써 유 토출량이 증가되어 압축기의 성능을 저하시키게 되는 문제점이 있었는 바, 본 발명은 냉매가스를 압축하는 압축기구부의 상측에 전동기구부를 구성하는 회전자의 회전 반대 방향으로 오일회수통로가 형성된 유분리판을 설치하여 회전자의 회전시 발생되는 원심력에 의해 밀폐용기의 저면에 채워진 오일이 흡상되는 것을 차단하여 오일이 냉매가스와 섞여 토출되는 것을 방지할 뿐만 아니라 오일의 귀환을 원활하게 함으로써 오일 부족을 방지하고 또한 압축 성능을 향상시킬 수 있도록 한 것이다.The present invention relates to an oil discharge prevention structure of a hermetic rotary compressor, and in the related art, a rotational flow of refrigerant gas discharged from the compressor mechanism is generated by the centrifugal force of the rotor when the rotor constituting the electric mechanism generating the driving force rotates. The oil is mixed with the oil filled on the bottom of the airtight container, resulting in oil forming, and the oil is mixed with the refrigerant gas discharged into the discharge pipe due to the oil forming to increase the oil discharge amount, thereby degrading the performance of the compressor. There is a problem, the present invention is installed on the centrifugal force generated during the rotation of the rotor by installing an oil separation plate formed with an oil return passage in the direction opposite to the rotation of the rotor constituting the electric mechanism unit on the upper side of the compressor mechanism for compressing the refrigerant gas By preventing the oil filled in the bottom of the sealed container from being sucked up, the oil is refrigerant gas By having not only be prevented from being mixed in smoothly discharging the return of the oil to prevent oil starvation and also to one so as to improve the compression performance.

Description

밀폐형 회전식 압축기의 유토출 방지구조{STRUCTURE FOR PREVENTING OIL DISCHARGE IN ROTARY COMPRESSOR}Oil leakage prevention structure of hermetic rotary compressor {STRUCTURE FOR PREVENTING OIL DISCHARGE IN ROTARY COMPRESSOR}

본 발명은 밀폐형 회전식 압축기의 유토출 방지구조에 관한 것으로, 특히 압축기구부에서 토출되는 냉매가스의 유동에 의한 유 포밍현상을 방지하여 유토출을 최소화할 수 있도록 한 밀폐형 회전식 압축기의 유토출 방지구조에 관한 것이다.The present invention relates to an oil discharge preventing structure of a hermetic rotary compressor, and more particularly, to an oil discharge preventing structure of a hermetic rotary compressor which can minimize oil discharge by preventing a phenomenon of forming caused by the flow of refrigerant gas discharged from the compression mechanism. It is about.

일반적으로 밀폐형 회전식 압축기는, 도 1a, 1b에 도시한 바와 같이, 소정의 내부체적을 갖는 밀폐용기(1)가 있고, 상기 밀폐용기(1)의 내부에는 고정자(2)와 회전자(3) 등으로 구성되는 전동기구부가 설치되어 있으며, 상기 회전자(3)의 내경에 압입되며 하부에 편심부(4a)가 형성된 회전축(4)과 상기 회전축의 편심부(4a)가 삽입되는 원통형의 압축 공간을 구비하여 형성되어 상기 편심부(4a)를 감싸며 상기 회전축(4)에 삽입되는 상부베어링(5) 및 하부베어링(6)과 함께 볼트(7)에 의해 결합되는 실린더(8)와 상기 회전축(4)의 편심부(4a)에 삽입됨과 더불어 실린더(8) 압축 공간(P)의 내주면을 접하면서 자전 및 공전하는 롤링피스톤(9)과 상기 실린더(8)의 일측에 직선운동가능하게 삽입되어 상기 롤링피스톤(9)의 외주면과 슬라이딩 접촉되면서 실린더(8) 압축 공간을 흡입실(a)과 압축실(b)로 분리하는 베인(10)을 포함하여 구성되는 압축기구부가 설치되어 있다.In general, the hermetic rotary compressor includes a hermetically sealed container 1 having a predetermined internal volume as shown in FIGS. 1A and 1B, and a stator 2 and a rotor 3 inside the hermetically sealed container 1. And a transmission mechanism composed of a back and the like, which is pressurized into the inner diameter of the rotor 3 and has a cylindrical compression in which a rotary shaft 4 having an eccentric portion 4a formed therein and an eccentric portion 4a of the rotary shaft inserted therein. The rotating shaft and the cylinder 8 and the rotating shaft which is formed with a space and is coupled by a bolt (7) together with the upper and lower bearings 5 and 6 inserted into the rotary shaft 4 and enclosed the eccentric portion (4a) The rolling piston 9 which is inserted into the eccentric portion 4a of (4) and rotates and revolves while contacting the inner circumferential surface of the compression space P of the cylinder 8 and is inserted into one side of the cylinder 8 in a linear motion. Sliding contact with the outer circumferential surface of the rolling piston (9) A vane (10) for separating a room entrance (a) and the compression chamber, (b) adding the compression mechanism is provided that comprises.

그리고 상기 베인(10)에 의해 압축실을 이루는 실린더(8)의 일측에 압축된 냉매가스를 토출시키는 토출포트(8a)가 형성되고, 상기 상부베어링(5)의 일측에 상기 토출포트(8a)와 연통되게 토출공(5a)이 형성되어 있다.A discharge port 8a for discharging the compressed refrigerant gas is formed at one side of the cylinder 8 constituting the compression chamber by the vane 10, and the discharge port 8a is provided at one side of the upper bearing 5. The discharge hole 5a is formed in communication with.

상기 실린더(8)의 흡입실에는 냉매가스가 실린더(8)내부로 유입되는 흡입구(8b)가 형성되고, 상기 흡입구(8b)는 밀폐용기(1)의 측부에 설치되는 어큐뮬레이터(11) 및 냉매유입관(12)에 의해 연결되어 있다.An intake port 8b through which the refrigerant gas flows into the cylinder 8 is formed in the suction chamber of the cylinder 8, and the intake port 8b is an accumulator 11 and a refrigerant installed at the side of the sealed container 1. It is connected by the inlet pipe 12.

상기 토출포트(8a)의 측부에 위치하도록 실린더(8)의 일측에 소정의 폭을 갖도록 형성된 베인 슬롯(Vane slot)에 소정의 두께와 면적을 갖도록 형성된 상기 베인(10)이 삽입되고, 상기 베인(10)은 스프링(13)에 의해 탄성적으로 지지되어 베인(10)의 일측단부가 롤링피스톤(9)에 접촉된다.The vane 10 formed to have a predetermined thickness and area is inserted into a vane slot formed to have a predetermined width at one side of the cylinder 8 so as to be located at the side of the discharge port 8a, and the vane is inserted. 10 is elastically supported by the spring 13 so that one side end of the vane 10 contacts the rolling piston 9.

상기 밀폐용기(1)의 저면에는 슬라이딩이 일어나는 부품에 공급되는 오일이 채워져 있고, 상기 밀폐용기(1)의 상부에는 밀폐용기(1) 내부에서 압축된 냉매가스가 외부로 토출되는 토출관(14)이 설치되어 있다.The bottom surface of the sealed container (1) is filled with oil supplied to the sliding element, the upper portion of the sealed container (1) discharge pipe 14 for discharging the refrigerant gas compressed in the closed container (1) to the outside ) Is installed.

미설명 부호 15는 상부베어링의 상면에 결합되어 토출공을 개폐시키는 토출밸브이며, 미설명 부호 16은 토출밸브의 움직임을 한정,지지하는 리테이너이고, 미설명 부호 17은 소음기이며, 상기 소음기는 상부베어링이나 하부베어링에 결합되어 토출소음을 저감시키게 된다.Reference numeral 15 is a discharge valve coupled to the upper surface of the upper bearing to open and close the discharge hole, reference numeral 16 is a retainer for limiting and supporting the movement of the discharge valve, reference numeral 17 is a silencer, and the silencer is It is coupled to the bearing or the lower bearing to reduce the discharge noise.

상기한 바와 같은 압축기는 인가되는 전류에 의해 회전자(3)가 회전하면서 회전축(4)을 회전시키게 되면, 회전축(4)의 회전에 의해 회전축의 편심부(4a)에 결합되어 있는 롤링피스톤(9)이 베인(10)과 접촉된 상태에서 실린더(8) 압축 공간에서 편심 회전하게 되고, 상기 롤링피스톤(9)의 편심 회전에 의한 실린더의 압축 공간(P) 체적변화로 저온저압의 냉매가스가 냉매유입관(12)과 흡입구(8b)를 통해 실린더(8)내부로 흡입되어 고온고압의 상태로 압축되며 그 압축된 고온고압의 냉매가스는 토출포트(8a) 및 토출공(5a)을 통해 실린더(8) 외부로 토출된다. 상기 실린더(8)외부로 토출된 고온 고압 상태의 냉매가스는 압축기구부의 상측에 위치한 전동기구부의 회전자(3)와 고정자(2)사이 및 밀폐용기(1)와 고정자(2)사이를 통해 상측으로 유동하여 밀폐용기(1)의 상부에 설치된 토출관(14)을 통해 밀폐용기(1)외부로 토출된다.As described above, when the rotor 3 rotates while the rotor 3 rotates by an applied current, the compressor is connected to the eccentric portion 4a of the rotation shaft by the rotation of the rotation shaft 4 ( 9) is eccentrically rotated in the compression space of the cylinder (8) in contact with the vane 10, the refrigerant gas of low temperature low pressure due to the volume change of the compression space (P) of the cylinder by the eccentric rotation of the rolling piston (9) Is sucked into the cylinder (8) through the refrigerant inlet pipe (12) and the suction port (8b) and compressed to a state of high temperature and high pressure, the compressed high-temperature high-pressure refrigerant gas is discharged to the discharge port (8a) and the discharge hole (5a) Through the cylinder 8 is discharged. The refrigerant gas in the high temperature and high pressure state discharged to the outside of the cylinder (8) is passed between the rotor (3) and the stator (2) of the electric mechanism located on the upper side of the compressor mechanism, and between the sealed container (1) and the stator (2). It flows upward and is discharged to the outside of the sealed container 1 through the discharge pipe 14 installed in the upper part of the sealed container 1.

그러나 상기한 바와 같은 압축기에서, 전동기구부를 구성하는 회전자(3)가 회전시 회전자(3)의 원심력에 의해 압축기구부에서 토출된 냉매가스의 회전 유동이 발생하게 되어 밀폐용기(1)의 저면에 채워진 오일과 혼입되어 유 포밍현상이 발생하게 되고, 상기 유 포밍현상으로 인하여 토출관으로 토출되는 냉매가스에 오일이 혼합되어 토출됨으로써 유 토출량이 증가되어 압축기의 성능을 저하시키게 되는 문제점이 있었다.However, in the compressor as described above, when the rotor 3 constituting the electric mechanism part rotates, the rotational flow of the refrigerant gas discharged from the compression mechanism part is generated by the centrifugal force of the rotor 3, so that the closed container 1 There is a problem in that the oil is mixed with the oil filled on the bottom surface, and the oil forming phenomenon occurs. As a result of the oil forming, the oil is mixed and discharged into the refrigerant gas discharged into the discharge tube, thereby decreasing the performance of the compressor. .

상기한 바와 같은 문제점을 감안하여 안출한 본 발명의 목적은 압축기구부에서 토출되는 냉매가스의 유동에 의한 유 포밍현상을 방지하여 유토출을 최소화할 수 있도록 한 밀폐형 회전식 압축기의 유토출 방지구조를 제공함에 있다.An object of the present invention devised in view of the above problems is to provide an oil discharge prevention structure of a hermetic rotary compressor to minimize oil discharge by preventing the oil forming phenomenon caused by the flow of refrigerant gas discharged from the compressor mechanism. Is in.

도 1a는 일반적인 밀폐형 회전식 압축기의 일예를 도시한 정단면도,Figure 1a is a front sectional view showing an example of a general hermetic rotary compressor,

도 1b는 상기 밀폐형 회전식 압축기의 평단면도,1b is a plan sectional view of the hermetic rotary compressor;

도 2a는 본 발명의 밀폐형 회전식 압축기 유토출 방지구조가 구비된 밀폐형 회전식 압축기의 정단면도,Figure 2a is a front sectional view of the hermetic rotary compressor with a hermetic rotary compressor oil discharge prevention structure of the present invention,

도 2b는 상기 2a는 평단면도,Figure 2b is a cross-sectional view 2a,

도 3는 본 발명의 밀폐형 회전식 압축기 유토출 방지구조를 구성하는 유분리판의 평면도,Figure 3 is a plan view of the oil separation plate constituting the hermetic rotary compressor oil discharge prevention structure of the present invention,

도 4는 상기 3도의 부분 단면도.4 is a partial cross-sectional view of FIG. 3.

(도면의 주요부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)

1 ; 밀폐용기 5 ; 상부베어링One ; Airtight containers 5; Upper bearing

20 ; 유분리판 21 ; 오일회수통로20; Oil separator 21; Oil recovery passage

21a ; 관통구멍 21b ; 가이드부21a; Through-hole 21b; Guide part

23 ; 체결나사23; Tightening Screw

상기한 바와 같은 본 발명의 목적을 달성하기 위하여 저면에 오일이 채워진 밀폐용기와, 상기 밀폐용기의 상측에 설치되어 구동력을 발생시키는 전동기구부와, 상기 밀폐용기의 하측에 설치되며 상기 전동기구부의 구동력을 전달받아 냉매가스를 흡입하여 압축하는 압축기구부를 포함하여 구성된 밀폐형 회전식 압축기에 있어서;상기 압축기구부의 상측에 전동기구부를 구성하는 회전자의 회전방향과 반대방향으로 복수개의 오일회수통로가 형성되어 밀폐용기 저면의 오일 흡상을 억제함과 아울러 오일 귀환을 원활하게 이루어지도록 하는 유분리판이 설치됨을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조가 제공된다.In order to achieve the object of the present invention as described above, a sealed container filled with oil on a bottom surface thereof, an electric mechanism part installed on an upper side of the sealed container to generate a driving force, and a driving force installed on the lower side of the sealed container, In the hermetic rotary compressor comprising a compression mechanism for receiving and compressing the refrigerant gas received in the receiving; A plurality of oil recovery passage is formed in the opposite direction to the rotation direction of the rotor constituting the electric mechanism on the upper side of the compression mechanism The oil discharge prevention structure of the hermetic rotary compressor is provided, wherein an oil separation plate is installed to suppress oil suction on the bottom surface of the hermetic container and facilitate oil return.

상기 유분리판은 일정 두께와 폭을 갖는 환형으로 형성되며 그 내부에 오일회통로가 복수개 형성되어 이루어짐을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조가 제공된다.The oil separation plate is formed in an annular shape having a predetermined thickness and width, and the oil discharge prevention structure of the hermetic rotary compressor is provided, wherein a plurality of oil passages are formed therein.

상기 오일회수통로는 일정 크기를 갖는 관통구멍과, 상기 관통구멍에 상응하는 면적이 함몰 절곡 연장되어 형성되는 가이드부로 이루어짐을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조가 제공된다.The oil return passage is provided with a through-hole having a predetermined size, and the oil discharge preventing structure of the hermetic rotary compressor, characterized in that the guide portion is formed by extending the area corresponding to the through-hole recessed.

상기 유분리판은 압축기구부의 상부베어링에 삽입됨과 아울러 실린더의 상면에 설치됨을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조가 제공된다.The oil separation plate is inserted into the upper bearing of the compression mechanism portion, and is provided with an oil discharge preventing structure of the hermetic rotary compressor, which is installed on the upper surface of the cylinder.

이하, 본 발명의 밀폐형 회전식 압축기의 유토출 방지구조를 첨부도면에 도시한 실시예에 따라 설명하면 다음과 같다.Hereinafter, the oil discharge prevention structure of the hermetic rotary compressor of the present invention will be described according to the embodiment shown in the accompanying drawings.

본 발명의 밀폐형 회전식 압축기의 유토출 방지구조는, 도 2a, 2b에 도시한 바와 같이, 저면에 오일이 채워진 밀폐용기(1)와, 상기 밀폐용기(1)의 상측에 설치되어 구동력을 발생시키는 전동기구부와, 상기 밀폐용기(1)의 하측에 설치되며 상기 전동기구부의 구동력을 전달받아 냉매가스를 흡입하여 압축하는 압축기구부를 포함하여 구성된 밀폐형 회전식 압축기에서, 상기 압축기구부의 상측에 전동기구부를 구성하는 회전자(3)의 회전방향과 반대방향으로 복수개의 오일회수통로(21)가 형성되어 밀폐용기(1) 저면의 오일 흡상을 억제함과 아울러 오일 귀환을 원활하게 이루어지도록 하는 유분리판(20)이 설치되어 이루어진다.The oil discharge preventing structure of the hermetic rotary compressor of the present invention, as shown in Figures 2a, 2b, is installed on the bottom of the sealed container (1) filled with oil and the upper side of the sealed container (1) to generate a driving force In the hermetic rotary compressor comprising an electric mechanism unit and a compression mechanism installed on the lower side of the hermetic container (1) and receiving a driving force of the electric mechanism unit to suck and compress the refrigerant gas, the electric mechanism unit on the upper side of the compressor mechanism. A plurality of oil recovery passages 21 are formed in a direction opposite to the rotational direction of the rotor 3 to constitute an oil separation plate to suppress oil suction on the bottom surface of the sealed container 1 and to smoothly return oil. 20 is installed and made.

상기 유분리판(20)은 압축기구부의 상부베어링(5)에 삽입됨과 아울러 실린더(8)의 상면에 설치됨이 바람직하다.The oil separation plate 20 is preferably inserted into the upper bearing 5 of the compression mechanism part and installed on the upper surface of the cylinder 8.

상기 유분리판(20)은, 도 3에 도시한 바와 같이, 일정 두께와 폭을 갖는 환형의 몸체(22) 내부에 오일회통로(21)가 복수개 형성되어 이루어진다. 그리고 상기 몸체 (22)내부에 유분리판(20)을 실린더(8)에 체결하는 체결나사(30)가 삽입되는 나사공(23)이 복수개 형성되며, 그 일측에 결합시 실린더(8)에 결합되는 베인(10)과 연통되는 연통홈(24)이 형성된다.As shown in FIG. 3, the oil separation plate 20 includes a plurality of oil passages 21 formed in the annular body 22 having a predetermined thickness and width. In addition, a plurality of screw holes 23 are inserted into the body 22 into which the fastening screw 30 for fastening the oil separator plate 20 to the cylinder 8 is formed. A communication groove 24 communicating with the vane 10 to be coupled is formed.

상기 유분리판(20)의 다른 결합 방법으로 유분리판(20)을 밀폐용기(1)에 용접하거나 열박음하여 유분리판(20)을 결합할 수 있다.The oil separation plate 20 may be coupled to the oil separation plate 20 by welding or shrinking the oil separation plate 20 to the sealed container 1 by another coupling method of the oil separation plate 20.

상기 오일회수통로(21)는, 도 4에 도시한 바와 같이, 일정 크기를 갖는 관통구멍(21a)과, 상기 관통구멍(21a)에 상응하는 면적이 함몰 절곡 연장되어 형성되는 가이드부(21b)로 이루어진다. 상기 오일회수통로(21)는 몸체(22)에 소정의 직경을 갖는 원형 궤적 일부를 절단하고 그 절단된 부분을 하부로 절곡하여 그 절곡된 부분을 가이드부(21b)로 하여 가공하게 된다.As shown in FIG. 4, the oil return passage 21 includes a through hole 21a having a predetermined size and a guide part 21b formed by extending and bending a recessed area corresponding to the through hole 21a. Is made of. The oil return passage 21 cuts a portion of the circular trajectory having a predetermined diameter in the body 22, and bends the cut portion downward to process the bent portion as the guide portion 21b.

상기 오일회수통로(21)는 유분리판(20)의 몸체(22)에 관통구멍(21a)을 형성하고 별도의 가이드부(21b)를 제작하여 관통구멍(21a)의 하측에 연장되도록 부착할 수 있다.The oil return passage 21 forms a through hole 21a in the body 22 of the oil separation plate 20 and makes a separate guide part 21b to be attached to extend below the through hole 21a. Can be.

이하, 본 발명의 밀폐형 회전식 압축기 유토출 방지구조의 작용효과를 설명하면 다음과 같다.Hereinafter, the operational effects of the hermetic rotary compressor oil discharge prevention structure of the present invention will be described.

먼저, 인가되는 전류에 의해 전동기구부를 구성하는 회전자(3)가 회전하게 되면 그 회전력이 회전축(4)을 통해 압축기구부에 전달되고, 상기 압축기구부는 전동기구부의 회전력을 전달받아 냉매가스를 흡입하여 압축하고 토출시키게 되며 그 토출된 냉매가스는 전동기구부의 고정자(2)와 회전자(3)사이 및 고정자(2)와 밀폐용기(1)사이를 통해 밀폐용기(1)의 상측으로 유동하여 밀폐용기(1)의 상측에 설치된 토출관(14)을 통해 밀폐용기(1)외부로 토출된다. 상기 과정에서, 회전자(3)의 회전에 의한 원심력에 의해 밀폐용기(1)내로 토출된 냉매가스의 회전 유동이 발생하게 되며 그 회전 유동에 의해 밀폐용기(1) 저면에 채워진 오일이 흡상하게 되면 압축기구부의 상측에 설치된 유분리판(20)에 의해 차단되어 오일이 냉매가스와 혼합되는 것이 방지된다. 상기 유분리판(20)에 형성된 오일회수통로(21)는 회전자(3)의 회전방향과 반대방향으로 형성되어 회전자(3)의 회전에 의한 원심력에 의해 흡상되는 것이 차단되며 이로 인하여 유 포밍현상의 발생이 방지된다.First, when the rotor 3 constituting the electric mechanism is rotated by the applied current, the rotational force is transmitted to the compressor mechanism through the rotating shaft 4, and the compressor mechanism is supplied with the rotational force of the electric mechanism to receive the refrigerant gas. It is sucked, compressed and discharged, and the discharged refrigerant gas flows upward of the sealed container 1 between the stator 2 and the rotor 3 and between the stator 2 and the sealed container 1 of the electric mechanism part. The discharge vessel 14 is discharged to the outside of the sealed container 1 through the discharge tube 14 provided above the sealed container 1. In the above process, the rotational flow of the refrigerant gas discharged into the sealed container 1 is generated by the centrifugal force by the rotation of the rotor 3, and the oil filled in the bottom surface of the sealed container 1 is sucked up by the rotating flow. If it is blocked by the oil separation plate 20 installed on the upper side of the compression mechanism to prevent the oil is mixed with the refrigerant gas. The oil recovery passage 21 formed in the oil separation plate 20 is formed in a direction opposite to the rotation direction of the rotor 3 to be blocked by the centrifugal force caused by the rotation of the rotor 3, thereby Forming phenomenon is prevented.

또한, 압축기구부에서 밀폐용기(1)내로 토출된 냉매가스에 섞인 오일은 회전자(3)의 원심력에 의해 밀폐용기(1)의 내주면에 부착 응결되며 그 오일은 밀폐용기(1)의 내주면을 타고 하측으로 흘러 유분리판(20)의 오일회수통로(21)를 통해 밀폐용기(1) 저면으로 귀환된다.In addition, the oil mixed with the refrigerant gas discharged from the compression mechanism into the sealed container 1 adheres to and condenses on the inner circumferential surface of the sealed container 1 by the centrifugal force of the rotor 3, and the oil forms the inner circumferential surface of the sealed container 1. It flows to the lower side and is returned to the bottom surface of the sealed container 1 through the oil return passage 21 of the oil separation plate 20.

본 발명은 압축기구부의 상측에 설치된 유분리판(20)에 의해 밀폐용기(1)내부로 토출된 냉매가스에 오일이 섞이는 것을 억제하게 됨으로써 밀폐용기(1)외부로 토출되는 냉매가스에 오일이 섞여 토출되는 것을 최소화하고 더불어 오일회수가 원활하게이루어질 수 있게 된다.According to the present invention, oil is prevented from being mixed into the refrigerant gas discharged into the sealed container 1 by the oil separation plate 20 installed on the upper side of the compression mechanism. It minimizes the discharge of the mixture and the oil recovery can be made smoothly.

이상에서 설명한 바와 같이, 본 발명에 의한 밀폐형 회전식 압축기의 유토출 방지구조는 냉매가스를 압축하는 압축기구부의 상측에 전동기구부를 구성하는 회전자의 회전 반대 방향으로 오일회수통로가 형성된 유분리판이 설치되어 회전자의 회전시 발생되는 원심력에 의해 밀폐용기의 저면에 채워진 오일이 흡상되는 것을 차단하여 오일이 냉매가스와 섞여 토출되는 것을 방지하게 될 뿐만 아니라 오일의 귀환을 원활하게 하게 됨으로써 오일 부족을 방지하게 되며 또한 압축 성능을 향상시킬 수 있는 효과가 있다.As described above, the oil discharge prevention structure of the hermetic rotary compressor according to the present invention is provided with an oil separation plate in which an oil recovery passage is formed in a direction opposite to the rotation of the rotor constituting the electric mechanism on the upper side of the compression mechanism for compressing the refrigerant gas. It prevents oil from being mixed with refrigerant gas by discharging oil filled on the bottom of the sealed container by the centrifugal force generated when the rotor rotates, and also prevents oil shortage by smoothly returning oil. In addition, there is an effect that can improve the compression performance.

Claims (5)

저면에 오일이 채워진 밀폐용기와, 상기 밀폐용기의 상측에 설치되어 구동력을 발생시키는 전동기구부와, 상기 밀폐용기의 하측에 설치되며 상기 전동기구부의 구동력을 전달받아 냉매가스를 흡입하여 압축하는 압축기구부를 포함하여 구성된 밀폐형 회전식 압축기에 있어서; 상기 압축기구부의 상측에 전동기구부를 구성하는 회전자의 회전방향과 반대방향으로 복수개의 오일회수통로가 형성되어 밀폐용기 저면의 오일 흡상을 억제함과 아울러 오일 귀환을 원활하게 이루어지도록 하는 유분리판이 설치됨을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조.An airtight container filled with oil on a bottom surface, an electric mechanism part installed on the upper side of the airtight container and generating a driving force, and a compressor mechanism part installed on the lower side of the airtight container and receiving and compressing refrigerant gas by receiving a driving force of the electric mechanism part. In the hermetic rotary compressor comprising a; A plurality of oil return passages are formed on the upper side of the compression mechanism in the direction opposite to the rotational direction of the rotor constituting the electric mechanism part to suppress oil suction on the bottom of the sealed container and to smoothly return the oil. Oil discharge prevention structure of the hermetic rotary compressor, characterized in that the installation. 상기 유분리판은 일정 두께와 폭을 갖는 환형으로 형성되며 그 내부에 오일회수통로가 복수개 형성되어 이루어짐을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조.The oil separation plate is formed in an annular shape having a predetermined thickness and width, the oil discharge prevention structure of the hermetic rotary compressor, characterized in that a plurality of oil recovery passages are formed therein. 제2항에 있어서, 상기 오일회수통로는 일정 크기를 갖는 관통구멍과, 상기 관통구멍에 상응하는 면적이 함몰 절곡 연장되어 형성되는 가이드부로 이루어짐을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조.The oil discharge prevention structure of a hermetic rotary compressor according to claim 2, wherein the oil return passage comprises a through hole having a predetermined size, and a guide portion formed by bending and extending an area corresponding to the through hole. 제1항에 있어서, 상기 유분리판은 압축기구부의 상부베어링에 삽입됨과 아울러 실린더의 상면에 체결나사에 의해 체결되어 설치됨을 특징으로 하는 밀폐형 회전식압축기의 유토출 방지구조.The oil discharge prevention structure of a hermetic rotary compressor according to claim 1, wherein the oil separation plate is inserted into the upper bearing of the compression mechanism and fastened to the upper surface of the cylinder by a fastening screw. 제1항에 있어서, 상기 유분리판은 압축기구부의 상측에 위치하도록 밀폐용기에 용접에 의해 결합됨을 특징으로 하는 밀폐형 회전식 압축기의 유토출 방지구조.The oil discharge prevention structure of a hermetic rotary compressor according to claim 1, wherein the oil separation plate is coupled to the sealed container by welding so as to be positioned above the compression mechanism.
KR1019980048427A 1998-11-12 1998-11-12 Structure for preventing oil discharge in rotary compressor KR100304573B1 (en)

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