CN102022323A - 用于涡旋式压缩机的回油阀 - Google Patents
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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
- F04C18/02—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
- F04C18/0215—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 where only one member is moving
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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
- F04C18/02—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
- F04C18/0253—Details concerning the base
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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
- 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
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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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
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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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/021—Control systems for the circulation of the lubricant
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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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
本发明公开了一种用于涡旋式压缩机的回油阀。用于选择性地允许从排放稳压室到吸入稳压室回油的阀,其包括通过滑阀选择性地开放或阻断的通道。滑阀在一个面上经受来自排放止回阀上游的排放压力位置的压力,而在相对的面上经受来自排放稳压室的排放压力。当压缩机运转时,两个压力应该相对均等。经受来自止回阀上游的室的压力的面比经受来自排放稳压室的压力的面大。因此,当压缩机运转时,滑阀偏移到允许从排放稳压室到吸入稳压室回油的第一位置。但是,一旦压缩机停机时,排放阀上游的室中的压力就下降。滑阀将被驱动到第二位置,在第二位置用于回油的连通被阻断。
Description
技术领域
本申请涉及涡旋式压缩机的改进,其中当压缩机运转时阀被控制以便打开回油通道,从而油能够从排放稳压室(discharge plenum)返回到吸入稳压室(suction plenum)。
背景技术
涡旋式压缩机被广泛地应用在制冷压缩应用中。在涡旋式压缩机中,第一涡旋部件(scroll member)和第二涡旋部件的每一个都包括底部以及从底部延伸出的通常螺旋形的包裹件(wrap)。两个包裹件相互配合以便限定加压室。两个涡旋部件中的一个相对于另一个产生旋转,并且包裹件之间的加压室在尺寸方面被减小。被封闭的制冷剂被压缩。
特别关注的是,在非常高速的运转时,对高速油流(high oil flow)以及系统的损失的控制。变速涡旋式压缩机能够从非常低的速度运行到非常高的速度。在低端的涡旋(low side scroll)中,正位移油泵要求低速,以便辅助典型的离心轴油泵。当涡旋接着以非常高的速度运转时,过量的油将经过压缩单元。希望在压缩机内分离油并将其返回到在低端的油泵。
发明内容
在本发明披露的实施例中,回油阀选择性地打开和关闭油从排放稳压室回到吸入稳压室的返回路径。回油阀的一个面经受(see)止回阀上游的室中的排放压力,而回油阀的另一个面经受止回阀下游的排放压力。当压缩机运转时,两个压力相对均等。回油阀的第一面比第二面大,以便只要压缩机运转,回油阀就偏移到允许排放稳压室和吸入稳压室连通的位置。但是当压缩机停止时,止回阀通常关闭。在已知的涡旋式压缩机中,两个涡旋部件从相接触移动开,并且止回阀上游的压力迅速地移向吸入压力。现在,回油阀的第一面上的压力低于排放稳压室中的较高的压力。然后回油阀偏移到第二位置,并阻断了排放稳压室和吸入稳压室之间的连通。这时,油不再返回到吸入稳压室。并且,排放稳压室中的压力将不通过返回通道回漏。
在一个实施例中,回油阀用机器加工成在非旋转涡旋部件内形成的腔中。第二实施例中,阀套设置于非旋转涡旋部件中的腔中并容纳回油阀。第二实施例略容易实现,因为阀套不需要精确的机械加工。
本发明的这些和其他特点能够从下列说明和附图中最好的理解,下面是附图的简要说明。
附图说明
图1示出现有技术的涡旋式压缩机。
图2示出本发明的第一实施例。
图3示出本发明的第二实施例。
具体实施方式
图1示出现有技术的涡旋式压缩机20。如已知的,电动机22驱动转轴24转动。引起旋转涡旋部件26相对于非旋转涡旋部件30旋转。如已知的,旋转涡旋部件26具有包裹件28,而非旋转涡旋部件30具有包裹件32。包裹件28和32相互配合以便限定加压室33。油路25形成在转轴24内并将油向上输送经过管道进入加压室33内。来自加压室33的被压缩的制冷剂移动进入排放室40,并经过排出阀42进入排放稳压室44。同样如已知的,吸入口45将制冷剂引导入吸入稳压室46。在本实施例中,非旋转涡旋部件30的底部提供了密封以便隔开稳压室44和46。本申请扩展至隔板提供这种分隔的压缩机。
当制冷剂移动经过止回阀42时,可能夹带油。这部分油可以被分离在排放稳压室44内。如上所述,已经存在将被分离的油返回的需要。
如图2所示,在本发明的第一实施例49中排出孔50延伸到止回阀室40。因此,止回阀42上游的制冷剂抵靠滑阀60的面72。面72是放大部分62的一部分。来自排放稳压室44的压力经过排出孔65被引导到面69,面69位于滑阀60的较小的部分68上。
在图2所示的位置,压缩机正运转。因此来自排出孔50的压力将很高,并且约等于来自排出孔65的压力。由于较大的面72,滑阀被向左偏移。油能够从通道52经过空间66返回到通道54并回到吸入稳压室46。
但是,当停机时,止回阀42将迅速地关闭。涡旋部件将分开,并且止回阀42上游的压力将下降。室44内的压力将保持很高。一旦排出孔50内的压力下降,来自排出孔65的压力将迅速超过排出孔50内的压力。这时,滑阀60将被驱动到右侧。当滑阀被驱动到右侧时,经过通道52到达通道54的回流被阻断。
图3示出另一个实施例169,其中阀套170插入非旋转涡旋部件的腔内。排出孔50仍然保留并通向(see)放大的面100。来自排放稳压室44的排出孔172通向(see)较小的面102。此外,当压缩机运转时,放大的面100引起滑阀71被驱动到左侧的位置(如图所示),并且油能从排出孔52返回到排出孔74。但是,当停机时,滑阀71将被迅速驱动到右侧,阻断这个液流。
因此本发明提供了相对简单并且可靠的方法,当压缩机运转时使油回流,而当压缩机停机时阻断油的回流。
虽然本发明的优选实施例已经公开,但是本领域的技术人员应该意识到会在本发明的范围内进行一些修改。出于该原因,将会研究下述权利要求以便确定本发明的实质范围和内容。
Claims (8)
1.一种涡旋式压缩机,其包括:
第一涡旋部件,其具有底部和从其底部延伸的通常螺旋形的包裹件;
第二涡旋部件,其具有底部和从其底部延伸的通常螺旋形的包裹件,所述第一涡旋部件和所述第二涡旋部件的各所述包裹件相互配合以便限定加压室,所述第二涡旋部件被驱动成相对于所述第一涡旋部件旋转,并且所述第一涡旋部件具有通向止回阀室的排放口,止回阀室具有被设置成选择性地关闭所述排放口的止回阀;
所述第一涡旋部件和所述第二涡旋部件被装在密封壳体内,并且分隔部件限定与排放室分开的吸入室,所述止回阀将液流从所述排放口导通进入所述排放室;以及
油的返回路径将来自所述排放室的通道经过阀腔连通至通向所述吸入室的通道,滑阀在所述阀腔内可移动,所述滑阀具有在第一面上施加所述止回阀室中的压力的排出孔,以及在第二面上施加所述排放室的压力的排出孔,所述第一面具有比所述第二面大的表面积,以便当所述压缩机运转时,所述滑阀偏移到允许在来自排放室的所述通道和通向吸入室的所述通道之间连通的位置,而当压缩机停机时,所述滑阀偏移以便终止来自所述排放室的所述通道和通向吸入室的所述通道之间的连通。
2.如权利要求1中所述的涡旋式压缩机,其中,所述滑阀在其各相对的端部上具有所述第一面和所述第二面。
3.如权利要求1中所述的涡旋式压缩机,其中,所述阀腔通过在所述第一涡旋部件的主体内进行机加工而限定。
4.如权利要求1中所述的涡旋式压缩机,其中,阀套设置在所述第一涡旋部件内以便限定所述阀腔。
5.一种操作涡旋式压缩机的方法,其包括以下步骤:
(a)设置具有底部和从其底部延伸的通常螺旋形的包裹件的第一涡旋部件;
(b)设置具有底部和从其底部延伸的通常螺旋形的包裹件的第二涡旋部件,所述第一涡旋部件和所述第二涡旋部件的各所述包裹件相互配合以便限定加压室,所述第二涡旋部件被驱动成相对于所述第一涡旋部件旋转,并且所述第一涡旋部件具有通向止回阀室的排放口,止回阀室具有被设置成选择性地关闭所述排放口的止回阀;
(c)将所述第一涡旋部件和所述第二涡旋部件设置在密封壳体内,并且设置限定与排放室分开的吸入室的分隔部件,所述止回阀将液流从所述排放口导通进入所述排放室;以及
(d)设置从所述排放室经过阀腔进入通向所述吸入稳压室的通道的通道,滑阀在所述阀腔内可移动,通过排出孔在所述滑阀的第一面施加所述排放阀室中的压力,以及通过排出孔在第二面上施加所述排放室中的压力,所述第一面具有比所述第二面大的表面积,以便当所述压缩机运转时,所述滑阀偏移到允许在来自排放室的所述通道和通向吸入室的所述通道之间连通的位置,而当压缩机停机时,所述滑阀偏移以便终止来自所述排放室的所述通道和通向吸入室的所述通道之间的连通。
6.如权利要求5中所述的方法,其中,所述滑阀在其各相对的端部上具有第一面和第二面。
7.如权利要求5中所述的方法,其中,所述阀腔通过在所述第一涡旋部件的主体内进行机加工而限定。
8.如权利要求5中所述的方法,其中,阀套设置在所述第一涡旋部件内以便限定所述阀腔。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US12/563,198 | 2009-09-21 | ||
US12/563,198 US8337183B2 (en) | 2009-09-21 | 2009-09-21 | Oil return valve for a scroll compressor |
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CN102022323A true CN102022323A (zh) | 2011-04-20 |
CN102022323B CN102022323B (zh) | 2015-07-22 |
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US (1) | US8337183B2 (zh) |
CN (1) | CN102022323B (zh) |
DE (1) | DE102010045559A1 (zh) |
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CN105840520A (zh) * | 2016-05-24 | 2016-08-10 | 广东美的暖通设备有限公司 | 供油调节装置、压缩机、涡旋压缩机及空调系统 |
CN110762013A (zh) * | 2019-10-14 | 2020-02-07 | 珠海格力节能环保制冷技术研究中心有限公司 | 一种回油控制结构、压缩机、空调器和控制方法 |
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US9689386B2 (en) | 2012-07-31 | 2017-06-27 | Bitzer Kuehlmaschinenbau Gmbh | Method of active oil management for multiple scroll compressors |
US10634137B2 (en) | 2012-07-31 | 2020-04-28 | Bitzer Kuehlmaschinenbau Gmbh | Suction header arrangement for oil management in multiple-compressor systems |
US10495089B2 (en) | 2012-07-31 | 2019-12-03 | Bitzer Kuehlmashinenbau GmbH | Oil equalization configuration for multiple compressor systems containing three or more compressors |
US9022759B2 (en) * | 2012-08-31 | 2015-05-05 | Emerson Climate Technologies, Inc. | Capacity modulated scroll compressor |
US9051934B2 (en) | 2013-02-28 | 2015-06-09 | Bitzer Kuehlmaschinenbau Gmbh | Apparatus and method for oil equalization in multiple-compressor systems |
US9506460B2 (en) * | 2014-02-10 | 2016-11-29 | Haier Us Appliance Solutions, Inc. | Linear compressor |
US9429150B2 (en) * | 2014-02-10 | 2016-08-30 | Haier US Appliances Solutions, Inc. | Linear compressor |
US9518572B2 (en) * | 2014-02-10 | 2016-12-13 | Haier Us Appliance Solutions, Inc. | Linear compressor |
FR3031550B1 (fr) * | 2015-01-13 | 2017-02-10 | Danfoss Commercial Compressors | Compresseur a spirales ayant un dispositif de refoulement d'huile |
US9939179B2 (en) | 2015-12-08 | 2018-04-10 | Bitzer Kuehlmaschinenbau Gmbh | Cascading oil distribution system |
US10760831B2 (en) | 2016-01-22 | 2020-09-01 | Bitzer Kuehlmaschinenbau Gmbh | Oil distribution in multiple-compressor systems utilizing variable speed |
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- 2009-09-21 US US12/563,198 patent/US8337183B2/en not_active Expired - Fee Related
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- 2010-09-16 DE DE102010045559A patent/DE102010045559A1/de not_active Withdrawn
- 2010-09-17 CN CN201010288086.4A patent/CN102022323B/zh not_active Expired - Fee Related
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JPS63150490A (ja) * | 1986-12-16 | 1988-06-23 | Matsushita Electric Ind Co Ltd | スクロ−ル気体圧縮機 |
CN1292850A (zh) * | 1998-03-05 | 2001-04-25 | 开利公司 | 带有压力比一压力差溢流阀的涡旋压缩机 |
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JP2001280269A (ja) * | 2000-03-31 | 2001-10-10 | Fujitsu General Ltd | スクロール型圧縮機 |
US20090081062A1 (en) * | 2007-09-26 | 2009-03-26 | Harshal Upadhye | Scroll compressor with high side to low side oil bleed valve |
Cited By (3)
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CN105840520A (zh) * | 2016-05-24 | 2016-08-10 | 广东美的暖通设备有限公司 | 供油调节装置、压缩机、涡旋压缩机及空调系统 |
CN110762013A (zh) * | 2019-10-14 | 2020-02-07 | 珠海格力节能环保制冷技术研究中心有限公司 | 一种回油控制结构、压缩机、空调器和控制方法 |
CN110762013B (zh) * | 2019-10-14 | 2022-04-01 | 珠海格力节能环保制冷技术研究中心有限公司 | 一种回油控制结构、压缩机、空调器和控制方法 |
Also Published As
Publication number | Publication date |
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US20110070114A1 (en) | 2011-03-24 |
DE102010045559A1 (de) | 2011-04-07 |
CN102022323B (zh) | 2015-07-22 |
US8337183B2 (en) | 2012-12-25 |
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