Environmental control system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5271238
SERIAL NO

07908779

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An environmental control system disclosed includes a refrigeration loop including a two stage centrifugal compressor having an inlet and an outlet, a condenser having an inlet connected with the compressor outlet and an outlet, and an evaporator having an inlet connected with said condenser outlet and an outlet connected with the compressor inlet, a motor for rotating the compressor, control means responsive to evaporator load for establishing the rate of rotating said compressor, a controllable expansion valve in communication with the refrigeration loop, an expansion valve control to control the setting of the expansion valve, a bypass valve in communication with the refrigeration loop and also in communication with one stage of the compressor, wherein the bypass valve is selectively openable to allow circulated refrigerant to be variably communicated to the stage in communication therewith, and wherein the setting of the expansion valve is also a function of bypass valve operation.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
UUSI, LLCREED CITY, MI95

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hartel, Edward O Orange, CT 11 189
Hurley, John F Easton, CT 17 240
Powell, James W Hartland, MI 9 318
Voss, Mark G Brighton, MI 58 686

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
* 4667480 Method and apparatus for controlling an electrically driven automotive air conditioner 115 1986
 
Other [Check patent profile for assignment information] (2)
* 4679404 Temperature responsive compressor pressure control apparatus and method 33 1986
* 4789057 Tamper resistant containers 3 1988
 
Margaux, Inc. (1)
* 4765150 Continuously variable capacity refrigeration system 61 1987
 
Tokyo Shibaura Denki Kabushiki Kaisha (1)
* 4407139 Method for controlling an air conditioning system 36 1981
 
VISTEON GLOBAL TECHNOLOGIES, INC. (1)
* 4858676 Airconditioning system for a vehicle 60 1988
 
Nippondenso Co., Ltd. (2)
* 4582124 Automotive air conditioning system with automatic control of refrigerator compressor capacity and heater air mixing damper 24 1985
* 4646535 Temperature and pressure monitored refrigeration system 33 1985
 
VILTER MANUFACTURING CORPORATION (1)
* 4571951 Electronic control for expansion valve in refrigeration system 37 1984
 
NISSAN MOTOR CO., LTD. (1)
* 4914924 Vehicle air conditioning system based on fuzzy inference 51 1988
 
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho (1)
* 4821527 Cooling device equipped with a variable displacement type compressor 7 1987
 
HITACHI, LTD. (5)
* 4566289 Refrigerator control system 35 1984
* 4603556 Control method and apparatus for an air conditioner using a heat pump 26 1985
* 4662185 System of controlling refrigerator temperature 45 1986
* 4870833 Car air conditioning apparatus and controlling method therefor 18 1987
* 4877081 Air-conditioning apparatus for automobiles 9 1989
 
SANYO ELECTRIC CO., LTD. (1)
* 4745767 System for controlling flow rate of refrigerant 81 1987
 
HONDA GIKEN KOGYO KABUSHIKI KAISHA (1)
* 4930320 Cooling fan controlling apparatus for vehicle with air conditioner 9 1989
 
CARRIER CORPORATION (8)
* 4362030 Refrigeration circuit 10 1981
* 4514991 Variable speed drive motor system with inverter control 30 1983
* 4527399 High-low superheat protection for a refrigeration system compressor 66 1984
* 4535607 Method and control system for limiting the load placed on a refrigeration system upon a recycle start 40 1984
* 4538422 Method and control system for limiting compressor capacity in a refrigeration system upon a recycle start 44 1984
* 4616483 Diffuser wall control 22 1985
* 4734628 Electrically commutated, variable speed compressor control system 37 1986
* 4938029 Unloading system for two-stage compressors 14 1989
 
JORGENSEN, OVE, LOVENSKJOLDSGADE 9, 6400 SONDERBORG, DENMARK (1)
* 4689968 Actuator means for the control of a refrigeration system expansion valve 11 1986
 
THERMO KING CORPORATION (1)
* 4819441 Temperature controller for a transport refrigeration system 21 1987
 
York International Corporation (1)
* 4546618 Capacity control systems for inverter-driven centrifugal compressor based water chillers 25 1984
 
CHEMICAL BANK, AS COLLATERAL AGENT (3)
* 4689967 Control and method for modulating the capacity of a temperature conditioning system 48 1985
* 4715190 Control and method for modulating the capacity of a temperature conditioning system 43 1987
* 4856286 Refrigeration compressor driven by a DC motor 95 1988
 
KABUSHIKI KAISHA TOSHIBA (2)
* 4722196 Device for controlling refrigeration cycle capacity 12 1986
* 4738118 Air conditioner 15 1987
 
EATON CORPORATION (1)
* 4794762 Refrigerant flow control system 19 1987
 
SANDEN CORPORATION (1)
* 4753083 Device for controlling the capacity of a variable capacity compressor 30 1987
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2006/0059,931 Binary control compressor system 0 2004
 
BEHR GMBH & CO. KG (1)
* 2006/0278,385 Air conditioning system and method for regulating the heating capacity thereof 0 2004
 
XDX GLOBAL LLC (1)
* 7225627 Vapor compression system and method for controlling conditions in ambient surroundings 3 2004
 
CARRIER CORPORATION (1)
* 6321549 Electronic expansion valve control system 25 2000
 
JOHNSON CONTROLS-HITACHI AIR CONDITIONING TECHNOLOGY (HONG KONG) LIMITED (1)
* 8191377 Heat source apparatus and method of starting the apparatus 0 2009
 
KABUSHIKI KAISHA TOSHIBA (1)
* 5436547 Inverter and air conditioner controlled by normal and defrost energization patterns 24 1993
 
DANFOSS A/S (2)
* 6854285 Controller and a method for controlling an expansion valve of a refrigeration system 14 2003
* 2004/0068,999 Controller and a method for controlling an expansion valve of a refrigeration system 7 2003
 
DAIKIN INDUSTRIES, LTD. (2)
* 9303908 Air conditioner 0 2006
* 2009/0151,374 AIR CONDITIONER 13 2006
 
PARKER HIROSS S.P.A. (1)
* 6467292 Control system for compressed gas refrigeration dryers 4 2001
 
LG ELECTRONICS INC. (2)
* 8806888 Air-conditioner with multi-stage compressor and phase separator 0 2007
* 2009/0218,077 Air-Conditioning System And Controlling Method Thereof 0 2007
* Cited By Examiner