WO2008136796A1 - Appareil d'entraînement de compresseur à moteur - Google Patents

Appareil d'entraînement de compresseur à moteur Download PDF

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Publication number
WO2008136796A1
WO2008136796A1 PCT/US2007/011003 US2007011003W WO2008136796A1 WO 2008136796 A1 WO2008136796 A1 WO 2008136796A1 US 2007011003 W US2007011003 W US 2007011003W WO 2008136796 A1 WO2008136796 A1 WO 2008136796A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
compressor
set forth
compressors
drive
Prior art date
Application number
PCT/US2007/011003
Other languages
English (en)
Inventor
Alexander Lifson
Michael F. Taras
Original Assignee
Carrier Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carrier Corporation filed Critical Carrier Corporation
Priority to US12/598,637 priority Critical patent/US20100139298A1/en
Priority to PCT/US2007/011003 priority patent/WO2008136796A1/fr
Priority to CN200780052864A priority patent/CN101688528A/zh
Publication of WO2008136796A1 publication Critical patent/WO2008136796A1/fr

Links

Classifications

    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
    • 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
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/06—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers

Definitions

  • This invention relates generally to refrigerant systems and, more particularly, to a method and apparatus for driving multiple compressors connected to a single motor.
  • compressor drive arrangements for refrigerant systems.
  • One design configuration encompasses a compressor unit and an electric motor in a single hermetically sealed housing, and is referred to as a hermetic or semi-hermetic compressor arrangement.
  • Another design configuration consists of separated compressor and motor, where the motor is exposed to the ambient environment. This arrangement is referred to as an open-drive arrangement. In the latter configuration, the motor and compressor are connected by a shaft protruding through the compressor housing.
  • Some sealing arrangement needs to be made to prevent refrigerant leakage to ambient environment or ambient air from entering into a refrigerant system.
  • HVAC&R heating, ventilation, air conditioning and refrigeration
  • the multiple compressors may be applied to a single refrigeration circuit or multiple refrigeration circuits, as well as connected serially or in tandem.
  • drive motors associated with these compressors, i.e. one motor for each individual compressor.
  • Each of the motors involves manufacturing cost, attendant costs associated with the motor itself, the necessary maintenance related thereto, and the associated space, weight and the installation cost. Therefore, there is a need to reduce a number of the driving motors, in comparison to a number of the refrigerant system compressors to be driven by these motors.
  • a single motor is associated and mechanically connected to multiple compression elements (or compressors), where at least one compression element is an open-drive compressor.
  • compression elements or compressors
  • these compression elements and the motor share the same housing.
  • the motor shaft in this case, protrudes from the housing and the other compression elements are connected to that end of the shaft in the open-drive fashion.
  • a hybrid arrangement is provided where some compression elements are a part of an open- drive compressor configuration and the other compression elements shares a common housing with the motor.
  • the motor is located outside the compressor housing and is open to direct communication with the ambient environment.
  • the drive motor has a drive shaft extending from both ends thereof, with each end being associated and mechanically connected to one or more compression elements.
  • the drive connection between the drive motor and one or more of the open-drive compressors may be disengaged by the use of a clutch or the like.
  • the multiple compression elements may be fluidly connected to separate circuits of a refrigerant system.
  • the compressors may be connected in a parallel or so-called tandem, arrangement within a single circuit of a refrigerant system.
  • the multiple compressors may be connected in a series flow arrangement within a single circuit of a refrigerant system.
  • FIG. 1 is a schematic illustration of the present invention as incorporated into multiple compressors with independent circuits.
  • FIG. 2 is another embodiment thereof.
  • FIG. 2A is another embodiment thereof.
  • FIG. 2B is still another embodiment thereof.
  • FIG. 3 is yet another embodiment thereof.
  • FIG. 4 is a schematic illustration of the present invention as incorporated into multiple compressors operating in parallel flow relationship within the same circuit of a refrigerant system.
  • FIG. 5 is a schematic illustration of the present invention as incorporated into multiple compressors operating in serial flow relationship within the same circuit of a refrigerant system.
  • the invention is shown generally in Fig. 1 at 10 as applied to a pair of open-drive compressors 11 and 12, with the compressors 11 and 12 being fluidly connected in separate refrigerant circuits. That is, the open-drive compressor 11 is fluidly connected in serial flow relationship into a refrigerant circuit which includes a condenser 13, an expansion device 14 and an evaporator 16. Similarly, the open- drive compressor 12 is fluidly connected in serial flow relationship with a condenser 17, an expansion device 18 and an evaporator 19. It should be understood that the basic refrigerant circuits shown in Fig. 1 may include various options and enhancement features. All these refrigerant circuit arrangements can take advantage of and equally benefit from the invention.
  • the open-drive compressors 11 and 12 are both driven by a common motor 21 preferably having a common drive shaft that extends from both ends of the motor by shaft ends 22 and 23. Shaft end 22 is thus extended to drive the open-drive compressor 11 by way of a mechanical coupling 24, and open-drive compressor 12 is connected to shaft end 23 by a mechanical coupling 26.
  • the mechanical couplings 24 and 26 may be a simple female collar that receives the two male shafts at its ends. It may also be a more sophisticated connection device such as a gear or flexible coupling, a gear box, a friction drive or the like.
  • Each of the mechanical couplings 24 and 26 may include an engaging-disengaging apparatus 27 and 28, such as a clutch or the like, to allow an operator or system controls to selectively engage or disengage one or more of the drive connections.
  • each of the compressors 11 and 12 may encompass multiple units within a compressor system. All these configurations are also within the scope of the invention.
  • one of the compressors and the motor can be enclosed within a common housing.
  • the combination of the compressor element and the motor within the common housing closely resembles a common hermetic or semi-hermitic compressor; with the exception that one end of the motor shaft protrudes from the housing to be connected to the open-drive compressor.
  • the gap needs to be sealed off. This gap is normally sealed off by known means such as, for example, a face shaft seal.
  • This alternative arrangement is exhibited in Fig. 1, where the compressor 11 and the motor 26 are shown as being enclosed within a common housing 15, as shown by the dashed line.
  • FIG. 2 An alternative embodiment is shown in Fig. 2 wherein a drive motor
  • the pulley 29 has a single shaft end 31, and a pair of pulleys 32 and 33 is rigidly attached so as to be rotated by the shaft end 31.
  • the pulley 32 is mechanically connected by a belt 34 to a pulley 36 which drives an open-drive compressor 37.
  • the pulley 33 is mechanically connected by a belt 38 to a pulley 39 for driving the open-drive compressor 41.
  • FIG. 2A In another alternative embodiment shown in Fig. 2A, two compression elements 81 and 82 are attached to the same end of the shaft in a serial arrangement via a mechanical coupling 83.
  • FIG. 2B illustrates yet another embodiment, where one of the compression elements, such as the compression element 81, and the motor 89 can be positioned within the same housing 84.
  • the mechanical coupling 83 may be positioned between two compression elements 81 and 82.
  • a belt drive arrangement can also be applied to a double ended motor
  • the motor 42 has shaft ends 43 and 44 with associated pulleys 46 and 47.
  • the pulley 46 is mechanically connected by a belt 48 to a pulley 49 which drives an open-drive compressor 51.
  • the pulley 47 is mechanically connected by a belt 52 to a pulley 53 which drives an open-drive compressor 54. Either of the two compressors can be selectively engaged or disengaged by being connected or disconnected from the belt drive.
  • the motors are of the double ended type, there is an advantage provided by the loads being on the opposite ends of the shaft and thereby acting to balance each other and resulting in less wear on the bearings of the motor.
  • Fig. 1 and Fig. 3 embodiments are more balanced and preferred from the reliability perspective
  • the Fig. 2, Fig. 2A and Fig. 2B configurations may be employed in cases where there are dimensional constraints or space limitations.
  • the single motor, common drive arrangement in addition to being applicable for use with multiple compressors and separate refrigeration circuits, is also applicable to the use of multiple compressors within a single refrigerant circuit as shown in Figs. 4 and 5.
  • the two open-drive compressors 56 and 57 are driven by a common drive motor 58 and are fluidly connected in a parallel flow relationship wherein they discharge refrigerant to a common discharge line 59 leading to a condenser 61, expansion device 62, and evaporator 63, connected in series, with the refrigerant vapor returning to a common suction line 64 for the two compressors 56 and 57.
  • the compressors 56 and 57 may be selectively engaged and disengaged, depending on the thermal load requirements within the conditioned space.
  • one of the compressors 56 and 57 may be of an open-drive type and another may be enclosed in the same housing with the driving motor 58. This is shown schematically in Fig.4 by the dashed line 71 that encompasses the compressor 56 and the motor 58 within the same housing.
  • 50 the two open-drive compressors 56 and
  • the open-drive compressor 57 discharges refrigerant into the suction side of the open-drive compressor 56 with the refrigerant then passing to the condenser 61, expansion device 62 and evaporator 63, after which it flows into the suction side of the open-drive compressor 57.
  • economizer to enhance performance (efficiency and capacity) of the refrigerant system is known in the art.
  • various design configurations of the economizer circuit are within the scope and can equally benefit from of the invention.
  • each compressor 56 or 57 may be selectively engaged and disengaged on demand, while a refrigerant bypass line may be provided to bypass refrigerant around the disengaged compressor (not shown).
  • the liquid injection feature may be employed to inject a portion of liquid refrigerant between the compression stages 56 and 57 to reduce the discharge temperature of the refrigerant.
  • one of the compressors 56 and 57 in Fig.5 can share a common housing with the motor 58.
  • the dashed line 73 encompasses the compressor 57 and the motor 58 within the same housing.
  • the lower stage compressor 57 should share the same housing with the motor 58, since the refrigerant suction vapor may simultaneously cool the motor.
  • a compressor can be selected from a variety of compressor types, including reciprocating, screw, scroll, centrifugal or axial compressor type.
  • Each compressor or compression element type can be represented by multiple compressors or compression elements.
  • a compression element can consist of several centrifugal compressor stages.
  • This invention can be applied to different refrigerant system types, including residential or commercial cooling and heating applications. It can also be used for providing cooling and refrigeration in supermarkets, truck-trailer and container applications.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

Selon l'invention, de multiples compresseurs sont reliés à un arbre commun d'un moteur d'entraînement. On peut envisager de désaccoupler de façon sélective un ou plusieurs compresseurs de sa liaison d'entraînement. Les multiples compresseurs sont, de préférence, fixés aux extrémités opposées d'un arbre de moteur commun s'étendant depuis les deux extrémités du moteur. De multiples compresseurs peuvent être agencés pour fonctionner en relation d'écoulement parallèle ou en relation d'écoulement en série dans un seul circuit de fluide réfrigérant. Les compresseurs peuvent également être installés sur des circuits de fluide réfrigérant distincts. Dans une relation d'écoulement en série, une fonction d'injection de vapeur ou de liquide peut être prévue. Tous les compresseurs peuvent être d'un agencement à entraînement ouvert, où l'un des compresseurs peut partager un boîtier commun avec le moteur.
PCT/US2007/011003 2007-05-07 2007-05-07 Appareil d'entraînement de compresseur à moteur WO2008136796A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/598,637 US20100139298A1 (en) 2007-05-07 2007-05-07 Motor-compressor drive apparatus
PCT/US2007/011003 WO2008136796A1 (fr) 2007-05-07 2007-05-07 Appareil d'entraînement de compresseur à moteur
CN200780052864A CN101688528A (zh) 2007-05-07 2007-05-07 电动机-压缩机驱动装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/011003 WO2008136796A1 (fr) 2007-05-07 2007-05-07 Appareil d'entraînement de compresseur à moteur

Publications (1)

Publication Number Publication Date
WO2008136796A1 true WO2008136796A1 (fr) 2008-11-13

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ID=39943784

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/011003 WO2008136796A1 (fr) 2007-05-07 2007-05-07 Appareil d'entraînement de compresseur à moteur

Country Status (3)

Country Link
US (1) US20100139298A1 (fr)
CN (1) CN101688528A (fr)
WO (1) WO2008136796A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011127875A3 (fr) * 2010-04-14 2012-05-18 DT- VÝHYBKÁRNA A STROJĺRNA A.S. Équipement hydraulique d'un dispositif de verrouillage muni de cylindres hydrauliques raccordés en parallèle, pour le réglage de lames d'aiguille d'un branchement de chemin de fer

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US9080645B2 (en) 2010-07-16 2015-07-14 Patton's Medical, Llc Compressed air device for allowing the expeditious adjustment of drive belts
US9178405B2 (en) 2011-05-13 2015-11-03 Carrier Corporation Magnetic drive coupling apparatus
DE102012003446A1 (de) * 2012-02-21 2013-08-22 Linde Aktiengesellschaft Verdichten eines kryogenen Mediums
CN102536733A (zh) * 2012-03-12 2012-07-04 贵州赤天化股份有限公司 大型天然气化肥装置的蒸汽驱动结构
EP2947401A1 (fr) * 2014-05-23 2015-11-25 Vlaamse Instelling voor Technologisch Onderzoek (VITO) Moteur thermique à plusieurs étages
CN104819607B (zh) * 2015-05-12 2017-04-12 广东美的暖通设备有限公司 制冷系统、冷媒控制方法、装置和空调器
CN107905974B (zh) * 2017-12-18 2023-07-25 珠海格力电器股份有限公司 动力装置及空调系统
US11585608B2 (en) 2018-02-05 2023-02-21 Emerson Climate Technologies, Inc. Climate-control system having thermal storage tank
US11149971B2 (en) 2018-02-23 2021-10-19 Emerson Climate Technologies, Inc. Climate-control system with thermal storage device
US11346583B2 (en) * 2018-06-27 2022-05-31 Emerson Climate Technologies, Inc. Climate-control system having vapor-injection compressors
FI20217163A1 (en) * 2021-10-29 2023-04-30 Nocosys Oy HEAT PUMP ARRANGEMENT

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US6050780A (en) * 1995-10-25 2000-04-18 Ishikawajima-Harima Heavy Industries Co., Ltd. Method for driving a high speed compressor
US6579078B2 (en) * 2001-04-23 2003-06-17 Elliott Turbomachinery Co., Inc. Multi-stage centrifugal compressor driven by integral high speed motor

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AT398811B (de) * 1987-02-05 1995-02-27 Hoerbiger Ventilwerke Ag Verdichteraggregat mit einem schraubenverdichter
US5467613A (en) * 1994-04-05 1995-11-21 Carrier Corporation Two phase flow turbine
US6742350B2 (en) * 2001-11-03 2004-06-01 Nippon Soken, Inc. Hybrid compressor device
CA2373905A1 (fr) * 2002-02-28 2003-08-28 Ronald David Conry Compresseur centrifuge double
US7178352B2 (en) * 2004-04-08 2007-02-20 Carrier Corporation Compressor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6050780A (en) * 1995-10-25 2000-04-18 Ishikawajima-Harima Heavy Industries Co., Ltd. Method for driving a high speed compressor
US6579078B2 (en) * 2001-04-23 2003-06-17 Elliott Turbomachinery Co., Inc. Multi-stage centrifugal compressor driven by integral high speed motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011127875A3 (fr) * 2010-04-14 2012-05-18 DT- VÝHYBKÁRNA A STROJĺRNA A.S. Équipement hydraulique d'un dispositif de verrouillage muni de cylindres hydrauliques raccordés en parallèle, pour le réglage de lames d'aiguille d'un branchement de chemin de fer

Also Published As

Publication number Publication date
CN101688528A (zh) 2010-03-31
US20100139298A1 (en) 2010-06-10

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