GB1429050A - Variable capacity multiple compressor refrigeration system - Google Patents

Variable capacity multiple compressor refrigeration system

Info

Publication number
GB1429050A
GB1429050A GB3007073A GB3007073A GB1429050A GB 1429050 A GB1429050 A GB 1429050A GB 3007073 A GB3007073 A GB 3007073A GB 3007073 A GB3007073 A GB 3007073A GB 1429050 A GB1429050 A GB 1429050A
Authority
GB
United Kingdom
Prior art keywords
compressor
port
running
unloaded
cylinders
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB3007073A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1429050A publication Critical patent/GB1429050A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • 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
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to 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
    • F25B31/00—Compressor 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
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • F25B2400/0751—Details of compressors or related parts with parallel compressors the compressors having different capacities
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

1429050 Compressors WESTINGHOUSE ELECTRIC CORP 25 June 1973 [17 July 1972] 30070/73 Heading F1N [Also in Division F4] A variable capacity refrigerant compressor system, comprises first and second refrigerant compressors 10, 20 of the hermetic shell type, the first compressor 10 being intended to run continuously and the second to be cycled on and off. The system also includes suction inlets 11, 21 for each compressor, the inlet 21 extending from within the compressor 1, discharge outlet ports 12, 13 and 22 connected in parallel to a main outlet port 30, and a by-pass line 33 having a solenoid valve 34. A check valve 31 is interposed between line 30 and port 22 to prevent the high gas pressure in the line 30, when only compressor 10 is running, from feeding back to the port 22. The first compressor is preferably a multiplecylinder compressor having unloading means for controllably unloading some of the cylinders, and is adapted to be always running either fully loaded or part-unloaded. The discharge port 12 is connected to the cylinders that cannot be unloaded, and the discharge port 13 is connected to the cylinders that can be unloaded. Valve 34 is controlled to be closed when compressor 20 is running thus preventing high pressure gas in the port 22 from by-passing back into the suction inlet 21; and to be opened when compressor 20 is not running so that any leakage past the check valve 31 will be returned to the port 21 without building up a pressure in port 22. A capacity control logic switch is provided to control the operation of the system.
GB3007073A 1972-07-17 1973-06-25 Variable capacity multiple compressor refrigeration system Expired GB1429050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27270472A 1972-07-17 1972-07-17

Publications (1)

Publication Number Publication Date
GB1429050A true GB1429050A (en) 1976-03-24

Family

ID=23040923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3007073A Expired GB1429050A (en) 1972-07-17 1973-06-25 Variable capacity multiple compressor refrigeration system

Country Status (10)

Country Link
US (2) US3775995A (en)
JP (1) JPS5420020B2 (en)
AU (1) AU475453B2 (en)
BE (1) BE802373A (en)
CA (1) CA990518A (en)
DE (1) DE2336369A1 (en)
ES (1) ES416944A1 (en)
FR (1) FR2193184B1 (en)
GB (1) GB1429050A (en)
IT (1) IT997377B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214572A (en) * 1988-01-29 1989-09-06 Toshiba Kk Compressing apparatus with variable capacity range and capacity control

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5032550A (en) * 1973-07-25 1975-03-29
US3885938A (en) * 1974-01-18 1975-05-27 Westinghouse Electric Corp Refrigeration system with capacity control
AT335671B (en) * 1974-12-20 1977-03-25 Interliz Anstalt CONTROL DEVICE FOR A HEAT PUMP
US4191027A (en) * 1976-07-29 1980-03-04 Kabushiki Kaisah Maekawa Seisakusho Apparatus for cooling brine
US4105374A (en) * 1977-03-28 1978-08-08 Copeland Corporation Integrated multi-unit refrigeration motor-compressor assembly
US4205537A (en) * 1978-12-11 1980-06-03 General Electric Company Multiple hermetic-motor compressor in common shell
US4951475A (en) * 1979-07-31 1990-08-28 Altech Controls Corp. Method and apparatus for controlling capacity of a multiple-stage cooling system
US4306420A (en) * 1979-10-25 1981-12-22 Carrier Corporation Series compressor refrigeration circuit with liquid quench and compressor by-pass
US4384462A (en) * 1980-11-20 1983-05-24 Friedrich Air Conditioning & Refrigeration Co. Multiple compressor refrigeration system and controller thereof
JPS57131883A (en) * 1981-02-06 1982-08-14 Mitsubishi Electric Corp Parallel compression type refrigerator
US4418548A (en) * 1982-03-29 1983-12-06 Trane Cac, Inc. Variable capacity multiple compressor refrigeration system
AU561404B2 (en) * 1983-03-08 1987-05-07 Sanden Corporation Variable capacity compressor
US4787211A (en) * 1984-07-30 1988-11-29 Copeland Corporation Refrigeration system
FR2617581B1 (en) * 1987-06-30 1989-09-29 Henriot Jean Luc REFRIGERATION SYSTEM FOR AN APPARATUS FOR FREEZING AND PRESERVING FOOD PRODUCTS
US5927088A (en) * 1996-02-27 1999-07-27 Shaw; David N. Boosted air source heat pump
US5839886A (en) * 1996-05-10 1998-11-24 Shaw; David N. Series connected primary and booster compressors
US5967761A (en) * 1997-07-15 1999-10-19 Ingersoll-Rand Company Method for modulation lag compressor in multiple compressor system
US6206652B1 (en) 1998-08-25 2001-03-27 Copeland Corporation Compressor capacity modulation
US6276148B1 (en) 2000-02-16 2001-08-21 David N. Shaw Boosted air source heat pump
JP4520608B2 (en) * 2000-09-20 2010-08-11 株式会社日立プラントテクノロジー Screw compressor
US6769265B1 (en) 2003-03-12 2004-08-03 Maytag Corporation Variable speed refrigeration system
US7490480B2 (en) * 2003-03-14 2009-02-17 Maytag Corporation Variable speed refrigeration system
US6931871B2 (en) * 2003-08-27 2005-08-23 Shaw Engineering Associates, Llc Boosted air source heat pump
KR101116208B1 (en) * 2004-05-17 2012-03-06 삼성전자주식회사 Control apparatus and method for compressor
US20060073026A1 (en) * 2004-10-06 2006-04-06 Shaw David N Oil balance system and method for compressors connected in series
US7320720B2 (en) * 2005-10-17 2008-01-22 Kirk Ticknor Interlocking filtration device
US20070187086A1 (en) * 2006-02-14 2007-08-16 Anatoly Nikolayevich Ivanov Device for cutting slot-shaped seats in wells by hydro-sandblasting method
US20080173034A1 (en) * 2007-01-19 2008-07-24 Hallowell International, Llc Heat pump apparatus and method
US8157538B2 (en) * 2007-07-23 2012-04-17 Emerson Climate Technologies, Inc. Capacity modulation system for compressor and method
US8192171B2 (en) * 2009-01-15 2012-06-05 Ingersoll-Rand Company Compressor system
WO2010088271A2 (en) 2009-01-27 2010-08-05 Emerson Climate Technologies, Inc. Unloader system and method for a compressor
US8011201B2 (en) * 2009-09-30 2011-09-06 Thermo Fisher Scientific (Asheville) Llc Refrigeration system mounted within a deck
US8011191B2 (en) 2009-09-30 2011-09-06 Thermo Fisher Scientific (Asheville) Llc Refrigeration system having a variable speed compressor
US10378533B2 (en) 2011-12-06 2019-08-13 Bitzer Us, Inc. Control for compressor unloading system
US8925346B2 (en) 2012-02-07 2015-01-06 Thermo Fisher Scientific (Asheville) Llc High performance freezer having cylindrical cabinet
US10024591B2 (en) * 2014-05-15 2018-07-17 Lennox Industries Inc. Sensor failure error handling
US10978968B2 (en) 2017-04-06 2021-04-13 Carrier Corporation Method for reducing the maximum inrush current of a compressor system comprising multiple asynchronous electrical motors and a compressor system for implementing this method
CN113669965A (en) * 2020-04-30 2021-11-19 特灵空调系统(中国)有限公司 System and method for OCR control in parallel compressors

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126713A (en) * 1964-03-31 Apparatus and method for preventing refrigerant condensing
US2253623A (en) * 1937-05-18 1941-08-26 Westinghouse Electric & Mfg Co Refrigerating apparatus
GB705999A (en) * 1951-11-02 1954-03-24 Gen Electric Improvements in and relating to compressors for refrigerators
US2865610A (en) * 1955-11-22 1958-12-23 Honeywell Regulator Co Control apparatus
US3022642A (en) * 1960-10-07 1962-02-27 Vilter Manufacturing Corp Refrigeration compressor control system
US3495418A (en) * 1968-04-18 1970-02-17 Garrett Corp Refrigeration system with compressor unloading means
US3503223A (en) * 1968-07-29 1970-03-31 Lennox Ind Inc Refrigeration system having tandem compressor arrangement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214572A (en) * 1988-01-29 1989-09-06 Toshiba Kk Compressing apparatus with variable capacity range and capacity control
US5013217A (en) * 1988-01-29 1991-05-07 Kabushiki Kaisha Toshiba Compressing apparatus with extended variable capacity range and capacity control method thereof
GB2214572B (en) * 1988-01-29 1992-06-24 Toshiba Kk Compressing apparatus with variable capacity range and capacity control method thereof

Also Published As

Publication number Publication date
AU475453B2 (en) 1976-08-26
US3775995A (en) 1973-12-04
JPS4958444A (en) 1974-06-06
CA990518A (en) 1976-06-08
ES416944A1 (en) 1976-03-16
FR2193184A1 (en) 1974-02-15
JPS5420020B2 (en) 1979-07-19
DE2336369A1 (en) 1974-02-07
FR2193184B1 (en) 1977-02-18
IT997377B (en) 1975-12-30
AU5703873A (en) 1974-12-19
BE802373A (en) 1974-01-16
USRE29621E (en) 1978-05-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee