KR20000046857A - Apparatus for preventing thermal deformation of hermetic rotary type compressor - Google Patents
Apparatus for preventing thermal deformation of hermetic rotary type compressor Download PDFInfo
- Publication number
- KR20000046857A KR20000046857A KR1019980063584A KR19980063584A KR20000046857A KR 20000046857 A KR20000046857 A KR 20000046857A KR 1019980063584 A KR1019980063584 A KR 1019980063584A KR 19980063584 A KR19980063584 A KR 19980063584A KR 20000046857 A KR20000046857 A KR 20000046857A
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- South Korea
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- cylinder
- hermetic rotary
- welding
- contact area
- thermal deformation
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Classifications
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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
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- 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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/127—Mounting of a cylinder block in a casing
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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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
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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
- 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
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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
- F04C2240/00—Components
- F04C2240/50—Bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
본 발명은 밀폐형 회전식 압축기의 열변형 방지장치에 관한 것이다.The present invention relates to a heat deformation preventing device of a hermetic rotary compressor.
일반적으로 밀폐형 회전식 압축기는 도 1에 도시된 바와같이 소정의 내부체적을 갖는 밀폐용기(1)가 구비되어 있고, 이 밀폐용기(1)의 내부에는 고정자(2)와 회전자(3) 등으로 구성되는 전동기구부가 설치되어 있다. 또한 상기 회전자(3)의 내경에 압입되며 하부에 편심부(4A)가 형성된 크랭크축(4)과, 상기 크랭크축(4)의 편심부(4A)를 감싸며 상부베어링(5) 및 하부베어링(6)과 함께 볼트(7)에 의해 결합되어 있는 실린더(8)와, 상기 크랭크축(4)의 편심부(4A)에 삽입되어 실린더(8)의 내경을 접하면서 자전 및 공전하는 롤링피스톤(9)과, 상기 롤링피스톤(9)의 외주면과 슬라이딩접촉되면서 실린더(8) 내부를 고압부와 저압부로 분리하며 직선운동을 하는 베인(도시없음) 등으로 구성되는 압축기구부가 설치되어 있다. 그리고 상기 상부베어링(5)의 일측에 상기 압축된 냉매가스를 토출시킬 수 있도록 한 토출포트가 형성되어 있고, 상기 토출포트에는 상기 압축된 냉매가스가 일정압 이상이 되면, 상기 토출포트을 오픈시키는 토출밸브가 설치되어 있다. 이와함께 상기 상부베어링(5)의 상부에는 토출가스의 토출 소음을 저감시키는 소음기(Muffler)(13)가 복개되는 식으로 결합되어 있으며, 상기 실린더(8)의 저압부에는 냉매가스가 실린더(8) 내부로 유입되는 흡입구(8A)가 형성되어 있고, 상기 흡입구(8A)는 밀폐용기(1)의 측부에 설치되는 어큐뮬레이터(11) 및 냉매유입관(12)에 의해 연결되어 있다. 그리고 상기 밀폐용기(1)의 상부에는 토출관(13)이 설치되어 토출포트를 통해 토출된 압축냉매가스를 압축기의 외부로 토출시키도록 구성되어 있다. 한편, 상기 베인은 도 2c에 도시된 바와 같이 실린더(8)의 내경과 통하도록 형성된 베인슬롯(9A)에 스프링(도시되지 않음)으로 탄력 지지된다. 이와같이 구성된 상기 밀폐형 회전식 압축기는 먼저, 전류공급에 의한 회전자(3)의 회전에 의해서 상기 회전자(3)에 삽입된 크랭크축(4)을 회전시키게 되면, 상기 크랭크축(4)의 회전에 의해서 롤링피스톤(9)이 실린더(8) 내부를 베인과 접촉된 상태에서 회전하게 되고, 상기 크랭크축(4)과 롤링피스톤(9)의 회전에 의해 어큐뮬레이터(11)로 유입된 저온 저압의 냉매가스가 냉매유입관(12)과 흡입구(8A)를 통해 상기 실린더(8) 내부로 흡입되어 고온 고압의 상태로 압축된다. 상기 실린더(8)에서 압축된 냉매가스는 일정압으로 토출밸브를 개방시키면서 토출포트를 통해 토출된다. 그리고 상기 토출포트를 통해 토출된 압축냉매가스는 소음기(10)를 거쳐 밀폐용기(1)의 상부에 설치된 토출관(13)을 통해 압축기 외부로 토출되도록 하고 있다.In general, the hermetic rotary compressor is provided with a hermetically sealed container 1 having a predetermined internal volume as shown in FIG. 1, and inside the hermetically sealed container 1 includes a stator 2, a rotor 3, and the like. The electric mechanism part comprised is provided. In addition, the upper bearing 5 and the lower bearing are wrapped around the crank shaft 4 and the eccentric portion 4A of the crank shaft 4, which are press-fitted into the inner diameter of the rotor 3 and have an eccentric portion 4A formed therein. The rolling piston which is inserted into the cylinder 8 coupled to the cylinder 8 together with the bolt 6 and the eccentric portion 4A of the crankshaft 4 while rotating and rotating while contacting the inner diameter of the cylinder 8. (9) and a compression mechanism including a vane (not shown) for linear movement while separating the inside of the cylinder 8 into a high pressure portion and a low pressure portion while being in sliding contact with the outer circumferential surface of the rolling piston 9. A discharge port for discharging the compressed refrigerant gas is formed at one side of the upper bearing 5, and the discharge port is configured to open the discharge port when the compressed refrigerant gas is above a predetermined pressure. The valve is installed. At the same time, the upper part of the upper bearing 5 is coupled with a muffler 13 to reduce the discharge noise of the discharge gas, and the refrigerant gas is connected to the low pressure part of the cylinder 8. The suction port 8A which flows into the inside) is formed, and the said suction port 8A is connected by the accumulator 11 and the refrigerant inlet pipe 12 which are provided in the side of the airtight container 1. A discharge tube 13 is installed above the sealed container 1 to discharge the compressed refrigerant gas discharged through the discharge port to the outside of the compressor. On the other hand, the vane is elastically supported by a spring (not shown) in the vane slot 9A formed to communicate with the inner diameter of the cylinder 8, as shown in Figure 2c. The hermetic rotary compressor configured as described above first rotates the crankshaft 4 inserted into the rotor 3 by the rotation of the rotor 3 by the current supply. The rolling piston 9 rotates in the state in which the inside of the cylinder 8 is in contact with the vanes, and the low temperature low pressure refrigerant introduced into the accumulator 11 by the rotation of the crank shaft 4 and the rolling piston 9. Gas is sucked into the cylinder (8) through the refrigerant inlet pipe (12) and the suction port (8A) and compressed to a state of high temperature and high pressure. The refrigerant gas compressed in the cylinder 8 is discharged through the discharge port while opening the discharge valve at a constant pressure. In addition, the compressed refrigerant gas discharged through the discharge port is discharged to the outside of the compressor through the discharge pipe 13 installed in the upper portion of the sealed container 1 through the silencer 10.
그러나 이러한 종래의 밀폐형 회전식 압축기는 실린더가 외측 전면에 걸쳐서 밀폐용기의 내측면에 직접 3접점으로 용접되기 때문에 그 열로 실린더의 변형이 생겨 누설로 인한 기기의 성능 저하는 물론 소음이 발생되는 문제점이 있었다. 따라서 본 발명의 목적은 실린더를 밀폐용기에 용접으로 고정시킬 때 발생하는 열로 인한 상기 실린더의 변형을 방지하는데 있다.However, this conventional hermetic rotary compressor has a problem that the cylinder is deformed due to the heat and the noise of the device is degraded as well as noise is generated because the cylinder is directly welded to the inner surface of the sealed container over the entire outer surface. . Accordingly, an object of the present invention is to prevent deformation of the cylinder due to heat generated when the cylinder is fixed by welding to the sealed container.
도 1은 일반적인 밀폐형 회전식 압축기의 내부 구성을 보인 단면도.1 is a cross-sectional view showing the internal configuration of a general hermetic rotary compressor.
도 2a,도 2b는 종래의 실린더 구조를 보인 것으로,Figure 2a, 2b shows a conventional cylinder structure,
도 2a는 평면도.2A is a plan view.
도 2b는 측단면도.2B is a side cross-sectional view.
도 3은 본 발명이 적용된 밀폐형 회전식 압축기의 내부 구성을 보인 단면도.Figure 3 is a cross-sectional view showing the internal configuration of the hermetic rotary compressor to which the present invention is applied.
도 4a,도 4b는 본 발명의 일 실시예에 의한 실린더 구조를 보인 것으로,4A and 4B show a cylinder structure according to an embodiment of the present invention.
도 4a는 평면도.4A is a plan view.
도 4b는 측단면도.4B is a side cross-sectional view.
도 5a,도 5b는 본 발명의 다른 실시예에 의한 실린더 구조를 보인 것으로,5a and 5b show a cylinder structure according to another embodiment of the present invention,
도 5a는 평면도.5A is a plan view.
도 5b는 측단면도.5B is a side cross-sectional view.
**도면의주요부분에대한부호의설명**** description of the symbols for the main parts of the drawings **
111:밀폐용기 112:고정자111: airtight container 112: stator
113:회전자 114:크랭크축113: rotor 114: crankshaft
114A:편심부 115:상부베어링114A: Eccentric 115: Upper bearing
116:하부베어링 117:볼트116: lower bearing 117: bolt
118:실린더 118A:흡입구118: cylinder 118A: inlet
119:롤링피스톤 120:소음기119: rolling piston 120: silencer
121:어큐뮬레이터 122:냉매유입관121: accumulator 122: refrigerant inlet pipe
123:토출관 124:덧살123: discharge pipe 124: surrender
125:치차부 125A:요홈부125: gear 125A: groove
125B:돌출부125B: protrusion
이러한 본 발명의 목적을 달성하기 위하여 밀폐용기 내부의 회전자에 압입되어 함께 회전하는 크랭크축의 편심부를 감싸며, 상부베어링 및 하부베어링과 함께 볼트에 의해서 결합된 실린더를 밀폐용기에 용접으로 고정함에 있어서, 상기 밀폐용기의 내측면에 접촉하여 용접되는 실린더의 외측면에 그 용접 접촉면적을 줄이기 위한 수단으로서, 실린더의 외측면 중간부에 덧살을 돌출되게 일체로 형성하거나 상기 실린더의 외측면을 치차형태로 형성하여서 된 것을 특징으로 한 밀폐형 회전식 압축기의 열변형 방지장치가 제공된다.In order to achieve the object of the present invention wrapped in the eccentric portion of the crank shaft is pressed into the rotor inside the sealed container and rotates together, in fixing the cylinder coupled by the bolt with the upper bearing and the lower bearing by welding to the sealed container, Means for reducing the welding contact area on the outer surface of the cylinder to be welded in contact with the inner surface of the sealed container, integrally formed by protruding the beetle in the middle of the outer surface of the cylinder or in the form of a gear Provided is a heat deformation preventing device for a hermetic rotary compressor, which is formed.
이하 첨부된 도면을 참조로 하여 본 발명의 구성을 실시예에 따라 상세히 설명한다.Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 발명이 적용된 밀폐형 회전식 압축기의 내부 구성을 보인 단면도이고, 도 4a,도 4b는 본 발명의 일 실시예에 의한 실린더 구조를 보인 것으로서, 이 밀폐형 회전식 압축기는 통상에서와 같이 소정의 내부체적을 갖는 밀폐용기(111)가 구비되어 있고, 이 밀폐용기(111)의 내부에는 고정자(112)와 회전자(113) 등으로 구성되는 전동기구부가 설치되어 있으며, 상기 회전자(113)의 내경에 압입되며 하부에 편심부(114A)가 형성된 크랭크축(114)과, 상기 크랭크축(114)의 편심부(114A)를 감싸며 상부베어링(115) 및 하부베어링(116)과 함께 볼트(117)에 의해 결합되어 있는 실린더(118)와, 상기 크랭크축(114)의 편심부(114A)에 삽입되어 실린더(118)의 내경을 접하면서 자전 및 공전하는 롤링피스톤(119)과, 상기 롤링피스톤(119)의 외주면과 슬라이딩접촉되면서 실린더(118) 내부를 고압부와 저압부로 분리하며 직선운동을 하는 베인(도시없음) 등으로 구성되는 압축기구부가 설치되어 있다. 그리고 상기 상부베어링(115)의 일측에 상기 압축된 냉매가스를 토출시킬 수 있도록 한 토출포트가 형성되어 있고, 상기 토출포트에는 상기 압축된 냉매가스가 일정압 이상이 되면, 상기 토출포트을 오픈시키는 토출밸브가 설치되어 있다. 이와함께 상기 상부베어링(115)의 상부에는 토출가스의 토출 소음을 저감시키는 소음기(Muffler)(120)가 복개되어 결합되어 있다. 또한 상기 실린더(118)의 저압부에는 냉매가스가 실린더(118) 내부로 유입되는 흡입구(118A)가 형성되어 있고, 상기 흡입구(118A)는 밀폐용기(111)의 측부에 설치되는 어큐뮬레이터(121) 및 냉매유입관(122)에 의해 연결되어 있다. 그리고 상기 밀폐용기(111)의 상부에는 토출관(123)이 설치되어 토출포트를 통해 토출된 압축냉매가스를 압축기의 외부로 토출시키도록 구성되어 있다.Figure 3 is a cross-sectional view showing the internal configuration of the hermetic rotary compressor to which the present invention is applied, Figures 4a, 4b is a cylinder structure according to an embodiment of the present invention, this hermetic rotary compressor is a predetermined interior as usual An airtight container 111 having a volume is provided, and an electric mechanism part including a stator 112, a rotor 113, and the like is provided inside the airtight container 111, The bolt 117 together with the upper bearing 115 and the lower bearing 116 is wrapped around the crank shaft 114 and the eccentric portion 114A having the eccentric portion 114A formed at the lower portion and pressed into the inner diameter. A rolling piston 119 inserted into the eccentric portion 114A of the crankshaft 114 and rotating and revolving while contacting the inner diameter of the cylinder 118, and the rolling piston In the cylinder 118 while sliding contact with the outer peripheral surface of the (119) A compression mechanism portion is constituted by a vane (not shown) for the separation and linear motion of the high pressure portion and the low pressure is provided. A discharge port for discharging the compressed refrigerant gas is formed at one side of the upper bearing 115, and the discharge port is configured to open the discharge port when the compressed refrigerant gas is above a predetermined pressure. The valve is installed. Along with this, an upper portion of the upper bearing 115 is coupled with a muffler 120 to reduce the discharge noise of the discharge gas. In addition, the inlet 118A through which the refrigerant gas flows into the cylinder 118 is formed in the low pressure part of the cylinder 118, and the inlet 118A is installed in the side of the sealed container 111. And a refrigerant inlet pipe 122. A discharge tube 123 is installed above the sealed container 111 and configured to discharge the compressed refrigerant gas discharged through the discharge port to the outside of the compressor.
이러한 밀폐형 회전식 압축기에 있어, 본 발명은 도 4a 및 도 4b에 도시된 바와 같이 밀폐용기(111)의 내측면과 접촉하여 용접되는 면적을 줄이기 위한 수단으로서, 실린더(118)의 외측면에 덧살(124)이 일체로 형성된다. 상기 덧살(124)은 실린더(118)의 외측면 상.하 높이보다 대략 1/3 정도 작은 높이의 두께로 형성되고, 실린더(118)의 외측면 중간부에 외향으로 돌출되는 식으로 일체로 형성된다. 결국, 상기 덧살(124)을 제외한 이의 상.하부측 실린더(118)의 살을 제거한 형태로 형성된다. 그리고 그 제거된 만큼의 공간부가 형성되어 용접면적은 작아지고 공기와의 접촉면적은 커지게 되는 것이다. 이에 따라 용접에 의한 열 발생량이 줄어들게 될 뿐만 아니라 덧살(124)을 통해 전도되는 열은 상기 덧살(124)의 상.하부측 공간부에 의한 저온공기와 접촉으로 냉각됨으로써 용접에 의한 열변형을 방지할 수 있게 되는 것이다.In the hermetic rotary compressor, the present invention is a means for reducing the area welded in contact with the inner surface of the hermetic container 111, as shown in Figure 4a and 4b, the brushing on the outer surface of the cylinder (118) ( 124 is integrally formed. The gush 124 is formed to a thickness of about 1/3 smaller than the upper and lower heights of the outer surface of the cylinder 118, integrally formed by protruding outward to the middle portion of the outer surface of the cylinder 118. do. As a result, the upper and lower cylinders 118 except for the tooth 124 is formed in a form in which the flesh is removed. Then, as much space as the removed portion is formed, the welding area becomes small and the contact area with air becomes large. Accordingly, not only the amount of heat generated by welding is reduced, but the heat conducted through the biting 124 is cooled by contact with the low-temperature air by the upper and lower spaces of the biting 124 to prevent thermal deformation by welding. You can do it.
한편, 도 5a 및 도 5b는 본 발명의 다른 실시예를 보인 평면도 및 측단면도이다. 이는 밀폐용기(111)의 내측면과 접촉하여 용접되는 면적을 줄이기 위한 수단으로서, 실린더(118)의 외측면을 치차 형태로 형성한 것이다. 상기 치차부(125)는 통상에서와 같이 들어가고 나오는 요철 형태로서, 요홈부(125A)를 제외한 돌출부(125B)만 밀폐용기(111)의 내측면에 접촉하여 용접됨으로써 상기 요홈부(125A) 만큼의 용접 접촉면적을 줄일 수 있을 뿐만 아니라 상기 돌출부(125B)를 통해서 전도되는 열을 요홈부(125A)에 의한 저온공기와의 접촉으로 냉각시키게 되어 용접에 의한 실린더의 열변형을 방지할 수 있게 되는 것이다.5A and 5B are a plan view and a side cross-sectional view showing another embodiment of the present invention. This is a means for reducing the area welded in contact with the inner surface of the sealed container 111, the outer surface of the cylinder 118 is formed in the form of a gear. The gear portion 125 is a concave-convex shape that enters and exits as usual, and only the protrusion portion 125B except the groove portion 125A contacts and contacts the inner surface of the hermetically sealed container 111 as much as the groove portion 125A. In addition to reducing the welding contact area, the heat conducted through the protrusion 125B is cooled by contact with the low temperature air by the recess 125A, thereby preventing thermal deformation of the cylinder by welding. .
이같이 본 발명은 밀폐용기와의 용접 접촉면적을 줄이고 그 줄인 만큼의 공간부에 존재하는 저온공기로 전도되는 열을 냉각시키도록 함으로써 기존의 용접에 의한 열로 실린더가 변형되는 것을 방지할 수 있을 뿐만 아니라 이로인해 누설로 인한 소음제거는 물론 기기의 성능을 보다 향상시킬 수 있는 효과를 갖게 된다.As described above, the present invention reduces the welding contact area with the sealed container and cools the heat conducted by the low temperature air present in the space as much as the reduced amount, thereby preventing the cylinder from being deformed by the conventional welding heat. This not only eliminates noise caused by leakage, but also improves the performance of the device.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980063584A KR100311389B1 (en) | 1998-12-31 | 1998-12-31 | Heat deformation preventing device of hermetic rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980063584A KR100311389B1 (en) | 1998-12-31 | 1998-12-31 | Heat deformation preventing device of hermetic rotary compressor |
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| Publication Number | Publication Date |
|---|---|
| KR20000046857A true KR20000046857A (en) | 2000-07-25 |
| KR100311389B1 KR100311389B1 (en) | 2001-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019980063584A KR100311389B1 (en) | 1998-12-31 | 1998-12-31 | Heat deformation preventing device of hermetic rotary compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120278A (en) * | 2017-06-30 | 2017-09-01 | 广东美芝制冷设备有限公司 | Rotary compressor and the air conditioner with it |
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1998
- 1998-12-31 KR KR1019980063584A patent/KR100311389B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120278A (en) * | 2017-06-30 | 2017-09-01 | 广东美芝制冷设备有限公司 | Rotary compressor and the air conditioner with it |
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| Publication number | Publication date |
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| KR100311389B1 (en) | 2001-12-17 |
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