CN101397994B - 具有从高压侧向低压侧的泄油阀的涡旋压缩机 - Google Patents

具有从高压侧向低压侧的泄油阀的涡旋压缩机 Download PDF

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CN101397994B
CN101397994B CN200810210914.5A CN200810210914A CN101397994B CN 101397994 B CN101397994 B CN 101397994B CN 200810210914 A CN200810210914 A CN 200810210914A CN 101397994 B CN101397994 B CN 101397994B
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pressure chamber
revolution
scroll
scroll element
drain valve
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CN101397994A (zh
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H·乌帕德亚
G·W·哈恩
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Danfoss Scroll Technologies LLC
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Scroll Technologies LLC
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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
    • 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
    • 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
    • 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
    • F04C28/28—Safety arrangements; Monitoring
    • 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
    • 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
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/19—Temperature
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/20—Flow

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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

一种涡旋压缩机，其具有选择性地将排出压力腔与吸入压力腔连通的泄油阀。所述泄油阀控制热油流动经过一通路并到达电动马达的安全切断开关。

Description

具有从高压侧向低压侧的泄油阀的涡旋压缩机
技术领域
本发明涉及一种涡旋压缩机，其中温度响应阀控制油从高压腔向吸入腔泄放，从而热油可以可选择地被输送到压缩机马达的马达保护开关。
背景技术
涡旋压缩机被广泛地应用到制冷压缩机的应用当中。在涡旋压缩机中，一对涡旋构件中的每一个均具有一底部和从其底部延伸出来的大致螺旋型涡旋齿。所述涡旋齿相互配合以确定压缩机腔。通过电动马达驱动轴，两涡旋构件中的一个相对于另一个公转。由于两者之间的公转，因而使得压缩腔的尺寸减小并将截留的制冷剂压缩。
在一种已知的涡旋压缩机中，马达与涡旋构件被接收在密封壳体中。一些结构将所述密封壳体的内部分为高压侧和吸入压力侧。制冷剂被传送至吸入压力侧，并被允许流过电动马达以对电动马达进行冷却。历史上是通过单独的隔离板将壳体内部分隔为两个腔。而在更近的一段时期内，利用非公转涡旋构件在两侧之间提供分隔。
在具有隔离板的涡旋压缩机中，利用了这样一种技术，即使用温度响应阀来选择性地控制油在用于电动马达的温度敏感安全开关上的流动。如果涡旋压缩机变得过热，则所述开关将会打开，热油将被允许下落至所述安全开关，并且马达将会停止。这可以在出现不希望的情况时，例如出现制冷剂供给损失时，防止压缩机的损坏。
现有技术中的油阀并未延伸跨过所述隔离板，并且因此只有返回油从吸入压力侧的一个部分到另一个部分。因而特别是当只有较少的制冷剂供给时，如在供给损失的情况下，与制冷剂一同行进到排出压力腔中的油很难返回到压缩机储油箱。
发明内容
在本发明公开的实施例中，泄油阀设置于非公转涡旋构件的底部。且所述非公转涡旋构件提供了两个腔之间的分隔。因此，所述泄油阀将高压腔与吸入压力腔连通。因而当所述阀打开时，油从排出压力腔返回。此外，所述阀优选地位于非公转涡旋构件底部的径向外部的“较低”区域。
附图说明
附图1为示意性示出本发明的涡旋压缩机的横截面视图。
附图2为本发明的泄油阀的放大视图。
附图3为本发明的泄油阀的另一个视图。
具体实施方式
附图1示出了一个涡旋压缩机20，其具有驱动轴24的电动机22。已知的，所述轴24包括供油管路25，其将油向上供给至具有涡旋齿28的公转涡旋构件26和具有涡旋齿32的非公转涡旋构件30。已知的，所述涡旋齿28和32确定了压缩腔33。制冷剂被截留在所述压缩腔内，并且其被朝向排出口40压缩，经过止回阀42至排出管45，该排出管45将制冷剂与下游的制冷系统连通。所述腔44处于高压，而位于非公转涡旋构件30的相反侧的腔46处于吸入压力。制冷剂从下游的制冷系统返回至吸入管47。这些吸入的制冷剂流过马达22以冷却马达。
在这个附图中示意性地示出安全系统50具有泄油阀52。如附图2所示，腔60接收有阀壳62，该阀壳62具有用于接收阀提动头68的开口64。通路66将热油向下连通至安全开关54。当阀提动头68被打开时，热油将行进至所述开关54，并且所述开关将停止马达22的操作。这可以防止在过热条件时的马达操作。
如附图2所示，所述阀提动头68具有阀杆70，其被引导用于在阀壳62中进行往复运动。腔72接收有双金属盘74，当非公转涡旋构件30施加在所述双金属盘74上的温度超过一特定点时，该双金属盘74将在附图2中所示的位置与附图3中所示的位置之间跳动(pop)。因此，如果条件变得过热时，所述双金属盘74突然弹向(snap)附图3中示出的位置，并且所述阀提动头68被压向上，形成通路80，从而允许热油运动至通路66，并向下返回到压缩机20的储油箱内。当条件不利时，如在供给损失的情况下，油可以以这种方式返回到压缩机储油箱内。此外，油还可以用于在这种条件下关闭压缩机。
如附图1、2和3所示，系统50和阀52可形成在非公转涡旋构件30的径向外部部分100中，该径向外部部分100在竖向上低于更靠近中心的部分102。因此，油趋向于收集在阀52和通路50的位置上。
虽然公开了这个发明的一个实施例，但是对本领域普通技术人员来说应当可以意识到可以在本发明的范围内进行某些改进。出于这个原因，应当研究下面的权利要求以确定本发明的真正范围和内容。

Claims (4)

1.一种涡旋压缩机，包括：
密封壳体：
接收于所述密封壳体中的电动马达，所述电动马达驱动轴，所述轴引起公转涡旋构件公转，所述公转涡旋构件具有与非公转涡旋构件的螺旋型涡旋齿相互配合的螺旋型涡旋齿，所述非公转涡旋构件以密封的方式接收于所述壳体中，并且在所述非公转涡旋构件的一侧限定吸入压力腔，在相反侧限定排出压力腔，所述公转涡旋构件和所述马达接收在所述吸入压力腔中，在所述公转涡旋构件的涡旋齿和所述非公转涡旋构件的涡旋齿之间限定压缩腔，在所述压缩腔中被压缩的制冷剂经过排出口然后进入所述排出压力腔，止回阀将排出口与所述排出压力腔分隔；以及
泄油阀，其用于选择性地打开通过所述非公转涡旋构件的通路并将所述排出压力腔与所述吸入压力腔连通，所述泄油阀包括当温度超过预定极限时在打开和关闭位置之间移动的部件，并且当所述泄油阀被打开时，所述通路允许热油向下移动至用于所述电动马达的安全开关以停止所述电动马达的操作，
其中所述泄油阀位于径向外部部分，该径向外部部分处于排出压力腔的竖向较低的水平位置。
2.根据权利要求1所述的涡旋压缩机，其中所述阀腔包括双金属构件，当达到预定极限时，所述双金属构件在致动和未致动位置之间弹跳，并且当被致动时，所述双金属构件迫使所述泄油阀到达打开位置。
3.根据权利要求2所述的涡旋压缩机，其中所述双金属构件位于所述吸入压力腔中。
4.根据权利要求1所述的涡旋压缩机，其中所述泄油阀位于所述非公转涡旋构件中。
CN200810210914.5A 2007-09-26 2008-08-12 具有从高压侧向低压侧的泄油阀的涡旋压缩机 Expired - Fee Related CN101397994B (zh)

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US11/861,329 2007-09-26
US11/861,329 US7547195B2 (en) 2007-09-26 2007-09-26 Scroll compressor with high side to low side oil bleed valve

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US8337183B2 (en) * 2009-09-21 2012-12-25 Danfoss Scroll Technologies, Llc Oil return valve for a scroll compressor
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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
US9051934B2 (en) 2013-02-28 2015-06-09 Bitzer Kuehlmaschinenbau Gmbh Apparatus and method for oil equalization in multiple-compressor systems
US9939179B2 (en) 2015-12-08 2018-04-10 Bitzer Kuehlmaschinenbau Gmbh Cascading oil distribution system
JP6582949B2 (ja) * 2015-12-09 2019-10-02 株式会社デンソー 圧縮機
US10760831B2 (en) 2016-01-22 2020-09-01 Bitzer Kuehlmaschinenbau Gmbh Oil distribution in multiple-compressor systems utilizing variable speed
JP2021032156A (ja) * 2019-08-23 2021-03-01 パナソニックＩｐマネジメント株式会社 圧縮機

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KR920002931A (ko) 1990-07-31 1992-02-28 강진구 밀폐형 스크로울 압축기의 급유조절장치
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GB0815252D0 (en) 2008-09-24
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