WO2009116791A2 - 스크롤 압축기 - Google Patents
스크롤 압축기 Download PDFInfo
- Publication number
- WO2009116791A2 WO2009116791A2 PCT/KR2009/001346 KR2009001346W WO2009116791A2 WO 2009116791 A2 WO2009116791 A2 WO 2009116791A2 KR 2009001346 W KR2009001346 W KR 2009001346W WO 2009116791 A2 WO2009116791 A2 WO 2009116791A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- discharge
- scroll
- fixed
- compression chamber
- fixed scroll
- Prior art date
Links
Images
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/065—Noise dampening volumes, e.g. muffler chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- 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
-
- 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
- F04C29/068—Silencing the silencing means being arranged inside the pump housing
-
- 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
-
- 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
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
- F04C2250/102—Geometry of the inlet or outlet of the outlet
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
Definitions
- the present invention relates to a scroll compressor for compressing a refrigerant at a high pressure in a compression chamber between a fixed scroll and a swing scroll, and more particularly, to a scroll compressor capable of reducing pulsation noise when discharging a high pressure refrigerant.
- a compressor is a device that compresses a gas by a rotor wheel or a rotor rotation or a reciprocating motion of a piston, and is divided into a reciprocating compressor, a rotary compressor, and a vane compressor according to the compression method.
- scroll compressor is a kind of rotary compressor
- fixed scroll and swing scroll are installed on the upper and lower sides inside the sealed container
- the fixed scroll is fixed to the sealed container
- the swing scroll is installed to be eccentrically rotatable with respect to the fixed scroll by the drive unit.
- the fixed scroll and the swing scroll form a compression chamber in which the involute wraps formed therein are engaged with each other to compress the refrigerant
- the space between the sealed container and the swing scroll maintains a low pressure state as the refrigerant sucked into the compression chamber is filled.
- the space between the sealed container and the fixed scroll maintains a high pressure state as the refrigerant compressed in the compression chamber is filled.
- FIG. 1 is a diagram illustrating an example of a fixed scroll of a scroll compressor according to the prior art.
- an inlet-shaped wrap 1a is formed to form a compression chamber P in the lower part of the disc, and a discharge port 1b is formed in a straight line in a portion blocked at the center of the disc. Is provided. Therefore, when the swing scroll (not shown) is eccentrically rotated with respect to the fixed scroll 1, the refrigerant is sucked into the compression chamber P between the fixed scroll 1 and the swing scroll, and then compressed to compress the fixed scroll 1. It exits through the discharge port 1b.
- the present invention has been made to solve the above problems of the prior art, and an object thereof is to provide a scroll compressor in which pulsation noise is reduced while a high temperature / high pressure refrigerant passes through a discharge port of a fixed scroll.
- Scroll compressor for solving the above problems is a sealed container in which the refrigerant flows in / out;
- a driving unit installed inside the sealed container to rotate the rotating shaft;
- a rotating scroll fixed to the rotating shaft and rotating together with the rotating shaft;
- the compression chamber is fixed to the sealed container and engaged with the swinging scroll to form a compression chamber, and the refrigerant is compressed by interacting with the swinging scroll, and the discharge direction of the discharge space side discharge port facing the discharge space in the compression chamber is discharged from the compression chamber side discharge port.
- a fixed scroll formed to deviate from the direction.
- the discharge port of the fixed scroll is characterized in that formed in at least two or more staircase shape.
- the discharge port of the fixed scroll is a discharge inlet portion to which the high pressure refrigerant flows, a discharge outlet portion which is eccentric with the discharge inlet portion and the high pressure refrigerant flows out, and a discharge connection portion communicating the discharge inlet portion and the discharge outlet portion.
- the discharge inlet portion and the discharge outlet portion is formed vertically in the eccentric state, characterized in that the discharge connection portion is formed horizontally.
- the discharge inlet and the discharge outlet includes a bottleneck section in which a predetermined area is in communication with each other, the discharge connection is characterized in that it can be omitted.
- the cross-sectional area D2 of the discharge outlet portion is characterized in that it is formed wider than the cross-sectional area D1 of the discharge inlet portion.
- the flow direction length L2 of the discharge outlet portion is characterized in that it is formed longer than the flow direction length L1 of the discharge inlet portion.
- the cross-sectional area (D3) of the bottleneck section is characterized in that formed 0.5 to 0.8 times larger than the cross-sectional area (D2) of the discharge outlet.
- the flow direction length L2 of the discharge outlet portion is characterized by being formed 1.2 times or more longer than the length L1 of the flow direction of the discharge inlet portion.
- the scroll compressor according to the present invention configured as described above can effectively reduce noise even without a muffler because the pulsation noise is reduced while the high temperature / high pressure refrigerant passes through the discharge port of the fixed scroll as the discharge port of the fixed scroll is formed in a step shape.
- the muffler installation can be omitted, simplifying the production process and reducing costs.
- FIG. 1 is a view showing an example of a fixed scroll of the scroll compressor according to the prior art.
- FIG. 2 shows an example of a scroll compressor according to the invention.
- FIG 3 is a view showing an example of a fixed scroll discharge port of the scroll compressor according to the present invention.
- Figure 4 is a graph showing the pulsation noise for each position in the discharge port of the conventional fixed scroll and the discharge port of the fixed scroll of the present invention.
- FIG. 2 is a diagram illustrating an example of a scroll compressor according to the present invention.
- An example of the scroll compressor according to the present invention is a sealed container 10 through which refrigerant flows in and out as shown in FIG. 2, a drive unit 20 installed inside the sealed container 10 to provide rotational force, and a drive unit 20.
- a fixed scroll 40 rotatably installed by the rotating scroll 30, a fixed scroll 40 fixed to the inside of the sealed container 10 and engaged with the rotating scroll 30 to form a compressed space P in which the refrigerant is compressed;
- a control unit (not shown) for controlling the operation of the driving unit 20 is configured.
- the airtight container 10 includes a cylindrical main shell 11, upper and lower shells 12 and 13 coupled to upper and lower ends of the main shell 11, respectively, to form a sealed space, and the main shell 11.
- Suction pipe 14 is installed on one side and the refrigerant flows in
- the discharge pipe 15 is installed on one side of the upper shell 12 and fixed to the upper and lower inside the main shell 11, outflow And is installed between the main frame 16 and the subframe 17 on which the driving unit 20, the pivoting scroll 30, and the fixed scroll 40 are mounted, and the main shell 11 and the upper shell 12 to fix the fixed scroll.
- It consists of the upper diaphragm 18 which forms the discharge space which collects before the high pressure refrigerant
- the driving unit 20 is a stator 21, a rotor 22 installed inside the stator 21 and rotating with the stator 21 by mutual electromagnetic forces, and a rotating shaft 23 engaged with the center of the rotor 22 to rotate. It is a kind of motor. At this time, the upper end of the rotating shaft 23 is rotatably installed through the main frame 16 so as to be eccentrically fixed to the turning scroll 30, the lower end of the rotating shaft 23 is fitted into the sub-frame 17 and rotatable. Is installed.
- Swivel scroll 30 is provided with a wrap projecting in a spiral shape on the upper surface, the rotary shaft 23 is press-fit fixed to the bottom eccentric position of the revolving scroll 30 at the same time the bottom surface of the revolving scroll 30 is the main frame (16) is mounted to be mounted on.
- the fixed scroll 40 is provided with a wrap 41 protruding in a spiral shape on the bottom surface similarly to the turning scroll 30, and has a discharge port 42 communicating with the compression space P at the center of the upper surface.
- the fixed scroll 40 is raised above the pivoting scroll 30 so that the wrap 41 of the 40 is engaged with the wrap 31 of the pivoting scroll 30, and then the circumferential portion of the fixed scroll 40 is the main frame ( 16) are bolted to.
- the muffler device 50 is located above the fixed scroll 40 and is provided on the flow path of the refrigerant discharge port 42.
- the muffler device 50 may be manufactured integrally with the fixed scroll 40, and may be coupled by screw 51 coupling. By this muffler device 40, it is possible to further reduce the overall noise of the compressor.
- the discharge space 60 communicates with the discharge port and refers to a space where the refrigerant compressed in the compression space P is discharged through the discharge port 42. That is, the compressed high pressure refrigerant is temporarily stored in the discharge space 60 before flowing out of the compressor through the discharge pipe 15.
- FIG 3 is a view showing an example of a fixed scroll discharge port of the scroll compressor according to the present invention.
- the fixed scroll 40 is fixed to an airtight container and engages with the swinging scroll 30 to form a compression chamber, and compresses the refrigerant by interacting with the swinging scroll 30.
- the discharge port 42 communicating with the compression space P and the discharge space 60 is formed in the fixed scroll 40 and discharges from the discharge port 42 on the discharge space 60 side toward the discharge space 60 in the compression chamber. The direction is formed to deviate from the discharge direction of the compression chamber side discharge port 42.
- discharge port 42 of the fixed scroll 40 will be described in detail with reference to FIG. 3, because it is formed in a stepped step shape and acts as a kind of muffler, while a high-pressure refrigerant passes through the discharge port 42. Reduce.
- the discharge port 42 communicates with the compression space P to communicate with the discharge space so as to be eccentric with the discharge inlet part 42a and the discharge inlet part 42a.
- the discharge outlet 42b and the discharge inlet 42a and the discharge connection 42c for communicating the discharge outlet 42b are configured to include the discharge inlet 42a and the discharge outlet 42b. It is formed vertically in the eccentric state, and the discharge connection part 42c is formed horizontally.
- the discharge connection 42c is Although present in a horizontal shape, if the eccentric distance of the discharge inlet / outlet 42a, 42b is smaller than the sum of the radii of the discharge inlet / outlet 42a, 42b (D1 / 2 + D2 / 2), then Even if the connection part 42c is not formed in a horizontal shape, a certain area of the discharge inlet / outlet parts 42a and 42b exists as a bottleneck section communicating with each other.
- the discharge inlet / outlet 42a, 42b of the vertical shape is formed to be exposed to the upper and lower surfaces of the fixed scroll 40 can be easily formed by a milling operation such as an end mill, etc. Since the discharge connection portion 42c having a horizontal shape is difficult to manufacture as it is formed inside the fixed scroll 40, the discharge connection portion 42c is formed as a bottleneck section where the discharge inlet / outlet portions 42a and 42b are combined. It is preferable.
- the discharge outlet 42b serves as a damper for reducing the pulsation of the refrigerant. Is formed larger than the cross-sectional area D1 of the discharge inlet 42a, while the length L2 of the discharge outlet 42b is longer than the length L1 of the discharge inlet 42a. Preferably, the length L2 of the discharge outlet portion 42b is 1.2 times longer than the length L1 of the discharge inlet portion 42a, so that the noise reduction effect can be enhanced.
- the discharge connection portion 42c is formed in a bottleneck section (hereinafter referred to as 42c)
- the narrower the cross-sectional area D3 of the bottleneck section 42c the greater the flow path resistance of the flow, and the cross-sectional area D3 of the bottleneck section 42c.
- the wider the area the lower the noise reduction effect of the pulsation. Therefore, the cross-sectional area D3 of the bottleneck section 42c is smaller than the cross-sectional area D1 of the discharge inlet 42a or the cross-sectional area D2 of the discharge outlet 42b.
- the cross-sectional area D3 of the bottleneck section 42c is 0.5 to 0.8 times larger than the cross-sectional area D2 of the discharge outlet 42b to increase the noise reduction effect. Can be.
- Figure 4 is a graph showing the pulsation noise for each position in the discharge port of the conventional fixed scroll and the discharge port of the fixed scroll of the present invention.
- the discharge port of the conventional fixed scroll is formed in a straight shape, while the discharge port of the fixed scroll of the present invention is formed stepped in a step shape, with reference to Figure 4 the conventional discharge flow path inlet and the discharge flow path inlet of the present invention.
- the pulsation noise of the coolant is generated equally large, but the pulsation noise of the coolant is reduced in the conventional discharge channel outlet and the discharge channel outlet of the present invention.
- the discharge flow path of the present invention is configured to generate a pressure change as well as a flow resistance larger than that of the conventional discharge flow path, the noise in the discharge flow path outlet of the present invention is significantly reduced than the noise in the conventional discharge flow path outlet. Able to know.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims (9)
- 냉매가 유/출입되는 밀폐 용기;밀폐 용기 내측에 설치되어 회전축을 회전시키는 구동부;회전축에 고정되어 회전축과 같이 회전되는 선회 스크롤; 그리고,밀폐 용기에 고정되는 동시에 선회 스크롤과 맞물려 압축실을 형성하고, 선회 스크롤과 상호 작용에 의해 냉매를 압축시키되, 압축실에서 토출공간을 향하는 토출공간측 토출구의 토출방향이 압축실측 토출구의 토출방향과 어긋나게 형성된 고정 스크롤을 포함하는 것을 특징으로 하는 스크롤 압축기.
- 제1항에 있어서,고정 스크롤의 토출구는 적어도 두 개 이상의 계단 형상으로 형성된 것을 특징으로 하는 스트롤 압축기.
- 제1항 또는 제2항에 있어서,고정 스크롤의 토출구는 고압의 냉매가 유입되는 토출 입구부와, 토출 입구부와 편심되어 고압의 냉매가 유출되는 토출 출구부와, 토출 입구부와 토출 출구부를 연통시키는 토출 연결부를 포함하는 것을 특징으로 하는 스크롤 압축기.
- 제3항에 있어서,토출 입구부와 토출 출구부는 편심된 상태에서 수직하게 형성되고, 토출 연결부는 수평하게 형성된 것을 특징으로 하는 스크롤 압축기.
- 제3항 또는 제4항에 있어서,토출 입구부와 토출 출구부는 일정 면적이 서로 연통되는 병목 구간을 포함하고,토출 연결부는 생략될 수 있는 것을 특징으로 하는 스크롤 압축기.
- 제3항 내지 제5항 중 어느 한 항에 있어서,토출 출구부의 단면적(D2)은 토출 입구부의 단면적(D1)보다 더 넓게 형성된 것을 특징으로 하는 스크롤 압축기.
- 제3항 내지 제6항 중 어느 한 항에 있어서,토출 출구부의 유동 방향 길이(L2)는 토출 입구부의 유동 방향 길이(L1)보다 더 길게 형성된 것을 특징으로 하는 스크롤 압축기.
- 제5항 내지 제7항 중 어느 한 항에 있어서,병목 구간의 단면적(D3)은 토출 출구부의 단면적(D2)에 비해 0.5 내지 0.8 배 크기로 형성된 것을 특징으로 하는 스크롤 압축기.
- 제7항 또는 제8항에 있어서,토출 출구부의 유동 방향 길이(L2)는 토출 입구부의 유동 방향의 길이(L1)의 1.2 배 이상 더 길게 형성된 것을 특징으로 하는 스크롤 압축기.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801056660A CN101946090B (zh) | 2008-03-20 | 2009-03-17 | 涡旋压缩机 |
US12/867,575 US8573955B2 (en) | 2008-03-20 | 2009-03-17 | Scroll compressor with noise reducing discharge opening |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2008-0026012 | 2008-03-20 | ||
KR1020080026012A KR20090100689A (ko) | 2008-03-20 | 2008-03-20 | 스크롤 압축기 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009116791A2 true WO2009116791A2 (ko) | 2009-09-24 |
WO2009116791A3 WO2009116791A3 (ko) | 2009-12-30 |
Family
ID=41091390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2009/001346 WO2009116791A2 (ko) | 2008-03-20 | 2009-03-17 | 스크롤 압축기 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8573955B2 (ko) |
KR (1) | KR20090100689A (ko) |
CN (1) | CN101946090B (ko) |
WO (1) | WO2009116791A2 (ko) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6170320B2 (ja) * | 2013-03-29 | 2017-07-26 | アネスト岩田株式会社 | 固定スクロール体及びスクロール式流体機械 |
CN107725370B (zh) * | 2017-09-28 | 2024-04-05 | 埼玉铝合金精密锻造(丹阳)有限公司 | 一种静涡旋盘及其生产工艺 |
KR102229985B1 (ko) * | 2019-03-08 | 2021-03-19 | 엘지전자 주식회사 | 소음저감구조를 구비한 스크롤 압축기 |
KR102232270B1 (ko) * | 2019-07-31 | 2021-03-24 | 엘지전자 주식회사 | 전동식 압축기 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5494422A (en) * | 1993-09-03 | 1996-02-27 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll type compressor having a discharge valve retainer with a back pressure port |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2882902B2 (ja) * | 1991-04-25 | 1999-04-19 | 三菱重工業株式会社 | スクロール型圧縮機 |
US5249941A (en) * | 1991-06-13 | 1993-10-05 | Daikin Industries, Ltd. | Scroll type fluid machine having intermittent oil feed to working chamber |
JP3129365B2 (ja) | 1993-08-30 | 2001-01-29 | 三菱重工業株式会社 | スクロ−ル型流体機械 |
JP3137507B2 (ja) * | 1993-08-30 | 2001-02-26 | 三菱重工業株式会社 | スクロ−ル型流体機械 |
JP3536136B2 (ja) * | 1994-09-19 | 2004-06-07 | 松下電器産業株式会社 | スクロール式圧縮機 |
JPH08319963A (ja) * | 1995-03-22 | 1996-12-03 | Mitsubishi Electric Corp | スクロール圧縮機 |
US5897306A (en) * | 1997-04-17 | 1999-04-27 | Copeland Corporation | Partition and pilot ring for scroll machine |
JP2000352386A (ja) * | 1999-06-08 | 2000-12-19 | Mitsubishi Heavy Ind Ltd | スクロール圧縮機 |
JP2000352389A (ja) * | 1999-06-08 | 2000-12-19 | Mitsubishi Heavy Ind Ltd | スクロール圧縮機 |
US7905715B2 (en) * | 2003-06-17 | 2011-03-15 | Panasonic Corporation | Scroll compressor having a fixed scroll part and an orbiting scroll part |
-
2008
- 2008-03-20 KR KR1020080026012A patent/KR20090100689A/ko not_active Application Discontinuation
-
2009
- 2009-03-17 CN CN2009801056660A patent/CN101946090B/zh not_active Expired - Fee Related
- 2009-03-17 US US12/867,575 patent/US8573955B2/en active Active
- 2009-03-17 WO PCT/KR2009/001346 patent/WO2009116791A2/ko active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5494422A (en) * | 1993-09-03 | 1996-02-27 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll type compressor having a discharge valve retainer with a back pressure port |
Also Published As
Publication number | Publication date |
---|---|
CN101946090A (zh) | 2011-01-12 |
US8573955B2 (en) | 2013-11-05 |
US20110033327A1 (en) | 2011-02-10 |
CN101946090B (zh) | 2013-08-21 |
WO2009116791A3 (ko) | 2009-12-30 |
KR20090100689A (ko) | 2009-09-24 |
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