CN1325166A - 带有提供给电动机保护器装置的温度反馈的密封压缩机 - Google Patents

带有提供给电动机保护器装置的温度反馈的密封压缩机 Download PDF

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CN1325166A
CN1325166A CN01119775A CN01119775A CN1325166A CN 1325166 A CN1325166 A CN 1325166A CN 01119775 A CN01119775 A CN 01119775A CN 01119775 A CN01119775 A CN 01119775A CN 1325166 A CN1325166 A CN 1325166A
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compressor
heater
motor
temperature
actuating coil
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CN1172413C (zh
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约翰·R·威廉斯
卡洛斯·萨穆迪奥
孙自立
贾森·休奇罗思
格雷格·哈恩
托马斯·巴里特
詹姆斯·W·布什
乔·T·希尔
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SCOZHOU TECHNOLOGIES Inc
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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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/19—Temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
    • H02H5/048—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch additionally responsive to excess current due to heating of the switch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/907—Temperature compensation of semiconductor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Protection Of Generators And Motors (AREA)
  • Rotary Pumps (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Induction Machinery (AREA)

Abstract

一种改进的电动机保护开关包括与一电动机保护电路里的加热器并联安装的一并联反馈零件。并联反馈零件检测压缩机零件的温度。如果该温度升高,通过加热器的电流增加。由此使电动机保护器开关打开。这样,反馈零件以比现有技术更快的速度提供来自压缩机泵装置的反馈给电动机保护电路。

Description

带有提供给电动机保护器装置的温度反馈的密封压缩机
本申请涉及一种密封压缩机用的电动机保护器电路，其中，将来自泵装置的的温度反馈提供给电动机保护器电路。
压缩机在许多现代制冷用途中得到使用。压缩机压缩制冷剂，然后将其输送给一制冷剂环路，以便进行制冷。压缩机通常与电动机和压缩机泵装置一起安装在一密封壳体里。电动机上通常设置一保护器电路，它在检测到特别高的温度时打开，以便停止电动机的运转。这样，在过度高温情况下，电动机停止工作。电动机里存在特别高的温度说明该系统里有毛病，而且，这不仅给电动机提供保护，而且给压缩机和制冷系统的其它区域提供保护。
一种已知类型的保护器电路可用于由单相电源驱动的电动机。在这种类型的电动机里，电动机定子的线圈通常包括运转和启动线圈。这两个线圈由电流驱动，而在两个线圈之间的电相位偏移使与一轴连接的一转子转动。接着，它驱动压缩机泵装置。与这种类型的电动机相关的保护器电路包括一单独共用线，它通过一有选择地打开的热敏开关，然后，它分路进入一与启动线圈加热器连接的线路，该加热器也给启动线圈提供一回路。共用线还分路进入一至运转线圈的回路。当开关打开时，电动机停止工作。
启动线圈加热器位于热敏开关附近，这样，如果启动线圈加热器温度升高，它打开在运转线圈上的开关。
上述保护器电路使电动机停止工作应该是在运转线圈经受非常高的温度时，或应该是在启动线圈经受非常高的温度或电流时。有时候，在运转线圈分路上也设置一小的加热器，它在非常高的运转线圈温度情况下提供额外的保护。
然而，在压缩机泵装置里可能存在着问题，即不能快速检测电动机。这种情况可能允许电动机不合需要地继续工作一段时间，直至电动机保护器电路工作以关闭电动机。因此，存在着给电动机保护器电路提供更高的灵敏度或反馈的需要。
在本发明一个公开的实施例里，提供一在压缩机别处的反馈零件处于升高的温度时能使启动线圈加热器的温度升高的系统。这样，电动机保护器开关电路打开，使电动机停止工作。在本发明的一较佳实施例里，反馈零件是一以与启动线圈加热器并联的方式安装的开关或正温度系数电阻器。该开关或正温度系数电阻器被安装成与在压缩机里的、被检测的零件接触。
在一个较佳实施例里，反馈零件与一螺旋压缩机的一部分接触。如果螺旋压缩机的这部分经受不合需要的高温，正温度系数电阻器增加其电阻。此外，如果温度超过预定的最大值，开关打开。在任何一种情况下，与启动线圈加热器并联的反馈线将迫使更多的电流通过启动线圈加热器。当正温度系数电阻器增加其电阻时，更多的电流流动经过启动线圈加热器。如果反馈开关打开，额外的电流流动经过启动线圈加热器。在任何一种情况下，启动线圈加热器升高其温度，并使在共用线上的主开关打开。
在另一实施例里，可设置一辅助加热器，以便提供反馈。
本发明的这些和其它特征可从下面的说明和附图中得到更好的了解。
图1是与本发明结合的螺旋压缩机的示意图；
图2是本发明的线路图；
图3显示了另一实施例；
图4显示了另一实施例；
图5显示了又一实施例；
图6显示了最后一个实施例。
图1显示了一螺旋压缩机20，它包括一轨道涡卷21，一非轨道涡卷35，一电动机定子24，一电动机转子26，以及一电动机保护器开关28。如图所示，电源通过电动机保护器开关28输送电流，以便驱动电动机26和24。在本发明里，与保护器开关28结合安装一泵盒保护器电路或反馈零件34，如图所示，电路34较佳的是与非轨道涡卷35接触。
如图2所示，运转线圈36和启动线圈42各自通电，以便驱动转子26。运转线圈36和启动线圈42上的、与电源反向的端部连在一起，并与共用中性线38接通。共用中性线38还包含一双金属开关40，它有选择地打开，以便在达到预定的温度时，切断通过共用中性线38的电流，从而切断运转线圈36和启动线圈42的电流。运转线圈36还与一低电阻运转线圈加热器41连接，而低电阻运转线圈加热器41位于双金属开关40附近。启动线圈42还与一高电阻启动线圈加热器44连接，而高电阻启动线圈加热器44也位于双金属开关40附近。较佳的是，双金属开关40、运转线圈加热器41及启动线圈加热器44作为电动机保护器开关28安装在一密封装置里。这里使用的术语“低”和“高”电阻是相对的术语，因为两个加热器的绝对电阻必然很低，以防止不必要的电损耗或产生过度的热量。
连接线46和回线48如图所示连接在电路上。这些线以与启动线圈加热器44和双金属开关40并联的方式与反馈零件34连接。如图所示，反馈零件34是一双金属开关32(类似于双金属开关40)和一中等电阻辅助加热器33。当辅助加热器33或构件34的温度上升超过选定值时，双金属开关32打开。构件34较佳的是与非轨道涡卷35接触，从而将清楚地反映非轨道涡卷35的温度。此外，图3显示了一正温度系数电阻器32′、或叫做PTC电阻器，当其温度随高电流或反馈零件34的温度而上升时，其电阻增加，从而可用来代替双金属开关32和辅助加热器33。
在电动机正常工作时，双金属开关40和32接通，而电流可流动经过运转线圈36和启动线圈42。此外，由于辅助加热器33或PTC电阻器32′比启动线圈加热器44的电阻小，因此大部分启动线圈电流流动经过反馈零件34，而相对少的电流流动经过启动线圈加热器44。如果在超载情况下、一个不合需要的高电流流动经过主线圈，运转线圈加热器41将增加其温度，从而使双金属开关40打开，切断提供给主线圈36的电流，并使电动机停止运转。提供给启动线圈42的电流可以不中断，但当电动机停止运转时经过启动线圈42的电流是很小的，因此，在这种情况下，加热速率是低的，不会出现特别的危险。
如果不合需要的高电流流动经过启动线圈42(在某些情况下可能发生)，辅助加热器33增加其温度，从而使双金属开关32打开。此外，高电流将使PTC电阻器32′增加其电阻，阻止电流流动，与双金属开关32相同。这使所有的启动线圈电流被引导通过启动线圈加热器44，从而增加其温度，使双金属开关40打开，阻止电流通过主线圈36和启动线圈42，使电动机停止运转。如果反馈零件34的温度上升到足够高程度，双金属开关32将打开或PTC电阻器32′将增加其电阻，即使启动线圈电流保持在较低程度上。这使所有的启动线圈电流被引导通过启动线圈加热器44，从而增加其温度，使双金属开关40打开，阻止电流通过主线圈36和启动线圈42，使电动机停止运转。
图4中的实施例60显示了一用于三相电源的电动机保护器电路68。而上述的实施例均涉及单相电源。在实施例60里，电源62、64和66的三个相均提供给保护器电路68。如图所示，双金属开关70通常实现在电源62、64和66之间的接触，然而，开关70由加热器71加热，但当温度超过一预定限度时打开。
在该实施例里，分接头72和74与一温度传感器装置76连接，它可以是上面所述的。该系统通常以类似于上述实施例所述的方式工作。
图5显示了另一个实施例78，其中，运转线圈80、共用线圈82和启动线圈84均与一保护器开关94连接，该保护器开关可如已知的那种。分接头86和88供电给一开关90，该开关包括如上面所述的传感器。然而，开关90包括适当的电路，这样，如果达到预定的温度，电流上升通过一位于保护器开关94附近的单独的加热器92。单独的加热器加热在保护器开关94里的零件，并当来自开关90的热量超过预定的限度时使电动机停止运转。在某种意义上，该实施例可以说具有一“加热器”，对本申请的权利要求来说，它实际上包括两个加热器，一个在保护器电路94里，一个是辅助加热器92。
图6显示了又一个实施例100，其中，电动机保护开关102包括一主加热器104和一个辅助加热器106。辅助加热器106与一开关108连接，如图5中所述的实施例。辅助加热器106位于开关110附近，主加热器104也是如此。基本上，该实施例非常类似于图5中的实施例，然而，，至少为了包装的目的辅助加热器位于电动机保护器电路里。
实质上，本发明将一保护器开关以与主加热器或辅助加热器并联的方式组装在一已知的电动机保护器开关里，其中，如果被监控的压缩机零件温度升高，提供来自压缩机零件的反馈，以便提高加热器的温度。这样，与现有技术中的情况相比，本发明将更快地将来自泵装置的反馈提供给电动机保护器开关。
已经介绍了本发明的较佳实施例；然而，本技术领域的技术人员将知道，在本发明的范围内可以作出许多改变。因此，下面的权利要求书将被用来限定本发明的真实范围和内容。

Claims (10)

1．一种密封压缩机，包括：
一安装在一压缩机壳体里的压缩机泵装置；
一驱动所述压缩机泵装置的电动机，所述电动机包括一定子和一转子，所述定子上设置一电动机保护电路，所述电动机保护电路包括一断路开关，当达到预定的温度时它有选择地打开，所述电动机保护电路还包括一加热器，所述加热器的作用是，当流过所述加热器的电流升高到一足够高的程度时，使断路开关打开；以及
一与所述加热器并联安装的反馈电路，它提供来自所述压缩机里的另一零件的反馈，以便在所述另一零件温度升高时增加通过所述加热器的电流。
2．如权利要求1所述的压缩机，其特征在于，所述压缩机泵装置是一螺旋压缩机装置，所述零件是一非轨道涡卷。
3．如权利要求1或2所述的压缩机，其特征在于，所述反馈电路包括一安装在所述压缩机泵装置的一部分上的一传感器。
4．如权利要求3所述的压缩机，其特征在于，所述传感器是一正温度系数电阻器，它在所述零件的温度升高时增加其电阻。
5．如权利要求3所述的压缩机，其特征在于，所述传感器是一开关，它在所述零件达到一预定温度时打开。
6．如权利要求1或2所述的压缩机，其特征在于，所述定子包括运转线圈和启动线圈，而所述加热器是启动线圈加热器。
7．如权利要求1或2所述的压缩机，其特征在于，所述加热器包括一主加热器和一辅助加热器，所述反馈电路给所述辅助加热器提供反馈。
8．如权利要求7所述的压缩机，其特征在于，所述辅助加热器位于所述断路开关附近。
9．如权利要求1或2所述的压缩机，其特征在于，所述电动机由单相电源驱动。
10．如权利要求1或2所述的压缩机，其特征在于，所述电动机由三相电源驱动。
CNB011197757A 2000-05-22 2001-05-22 带有提供给电动机保护器装置的温度反馈的密封压缩机 Expired - Fee Related CN1172413C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/576,571 2000-05-22
US09/576,571 US6364619B1 (en) 2000-05-22 2000-05-22 Sealed compressor with temperature feedback to motor protector unit

Publications (2)

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CN1325166A true CN1325166A (zh) 2001-12-05
CN1172413C CN1172413C (zh) 2004-10-20

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US (2) US6364619B1 (zh)
EP (1) EP1158641B1 (zh)
JP (1) JP3721312B2 (zh)
KR (1) KR100430872B1 (zh)
CN (1) CN1172413C (zh)
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MY (1) MY117707A (zh)

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JP3721312B2 (ja) 2005-11-30
JP2002027664A (ja) 2002-01-25
CN1172413C (zh) 2004-10-20
BR0102070A (pt) 2002-01-02
EP1158641A3 (en) 2004-06-16
EP1158641A2 (en) 2001-11-28
EP1158641B1 (en) 2011-08-03
US6623244B2 (en) 2003-09-23
US20020076333A1 (en) 2002-06-20
KR20010107593A (ko) 2001-12-07
US6364619B1 (en) 2002-04-02
EP1158641A8 (en) 2002-02-27
MY117707A (en) 2004-07-31
KR100430872B1 (ko) 2004-05-10

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