US Patent No: 5,209,076

Number of patents in Portfolio can not be more than 2000

Control system for preventing compressor damage in a refrigeration system

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Importance

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Abstract

A microprocessor based device which monitors the operation of a compressor in a refrigeration system and automatically shuts the compressor down if a monitored condition is abnormal. Sensors in the refrigeration system sense conditions such as refrigerant pressure and temperature, superheat, oil pressure and motor current draw. If a sensed condition is outside of a safety range and remains there for a time out period, an alarm condition is indicated and the device generates a alarm signal and shuts down the compressor. A detachable display module includes a keypad for carrying out field programming and a LCD screen for displaying the refrigerant conditions and programming prompts and commands. A rest button permits resetting twice before a service call is required.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
IZON, INC.PARAGOULD, AR1

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hobbs, Michael L Kansas City, MO 2 84
Kauffman, Gary O Olathe, KS 1 64

Cited Art

Patent Info (Count) # Cites Year
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
4,545,212 Super-heat detector for refrigerating apparatus 16 1984
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY (1)
4,718,250 Compact heat exchanger for refrigeration systems 6 1986
 
ZEXEL CORPORATION (1)
4,677,830 Air conditioning system for automotive vehicles 43 1985
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (3)
4,563,878 Super-heat monitoring and control device for air conditioning refrigeration systems 23 1984
4,788,826 Method and apparatus for preventing floodback in cooling apparatus 5 1987
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
EMERSON CLIMATE TECHNOLOGIES, INC. (17)
7,647,783 Compressor diagnostic system 1 2004
7,260,948 Compressor diagnostic system 14 2004
7,412,839 Remote data acquisition system and method 12 2004
7,174,728 Remote data acquisition system and method 19 2004
7,290,989 Compressor protection and diagnostic system 4 2004
7,412,842 Compressor diagnostic and protection system 19 2005
7,905,098 Compressor diagnostic and protection system and method 2 2005
7,878,006 Compressor diagnostic and protection system and method 1 2005
7,484,376 Compressor diagnostic and protection system and method 5 2005
7,458,223 Compressor configuration system and method 6 2005
7,162,883 Compressor diagnostic method 14 2005
7,648,342 Compressor protection and diagnostic system 1 2006
7,491,034 Compressor protection and diagnostic system 7 2006
8,393,169 Refrigeration monitoring system and method 0 2008
8,160,827 Compressor sensor module 1 2008
7,980,085 Compressor diagnostic system 0 2010
8,335,657 Compressor sensor module 0 2011
 
EMERSON RETAIL SERVICES, INC. (9)
7,490,477 System and method for monitoring a condenser of a refrigeration system 8 2004
7,644,591 System for remote refrigeration monitoring and diagnostics 7 2004
7,752,854 Monitoring a condenser in a refrigeration system 1 2005
7,752,853 Monitoring refrigerant in a refrigeration system 1 2005
7,665,315 Proofing a refrigeration system operating state 4 2005
7,596,959 Monitoring compressor performance in a refrigeration system 5 2005
7,594,407 Monitoring refrigerant in a refrigeration system 6 2005
7,845,179 System and method for monitoring a compressor of a refrigeration system 1 2008
8,065,886 Refrigeration system energy monitoring and diagnostics 2 2010
 
HUSSMANN CORPORATION (6)
7,047,753 Refrigeration system and method of operating the same 9 2003
6,999,996 Communication network and method of communicating data on the same 17 2003
6,973,794 Refrigeration system and method of operating the same 14 2003
7,000,422 Refrigeration system and method of configuring the same 11 2003
7,270,278 Distributed intelligence control for commercial refrigeration 9 2003
7,617,691 Refrigeration system and method of operating the same 5 2007
 
CARRIER CORPORATION (4)
6,176,095 Pretrip device for testing of a refrigeration system compressor 10 1999
6,539,734 Method and apparatus for detecting flooded start in compressor 3 2001
6,799,951 Compressor degradation detection system 6 2002
8,109,102 Adjustment of compressor operating limits 0 2007
 
COMPUTER PROCESS CONTROLS, INC. (3)
7,290,398 Refrigeration control system 13 2004
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7,885,959 Enterprise controller display method 1 2006
 
PARKER INTANGIBLES LLC (2)
5,522,231 Apparatus and method for mass flow control of a working fluid 8 1995
6,460,354 Method and apparatus for detecting low refrigerant charge 8 2001
 
BEHR CLIMATE SYSTEMS, INC. (1)
6,330,802 Refrigerant loss detection 19 2000
 
BEHR GMBH & CO. KG (1)
6,073,457 Method for operating an air conditioner in a motor vehicle, and an air conditioner having a refrigerant circuit 13 1998
 
BITZER US, INC. (1)
6,017,192 System and method for controlling screw compressors 23 1997
 
CONCEPT TECHNOLOGY, INC. (1)
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CONDOR-WERKE GEBR. FREDE GMBH & CO. KG (1)
5,552,646 Compact control and monitoring switch 2 1994
 
COOPER INSTRUMENT CORPORATION (1)
5,666,815 Method and apparatus for calculating super heat in an air conditioning system 11 1994
 
DIGI-COOL INDUSTRIES LTD. (1)
5,311,745 Pressure measurement system for refrigeration system 8 1993
 
EMERSON CLIMATE TECHNOLOGIES RETAIL SOLUTIONS, INC. (1)
8,316,658 Refrigeration system energy monitoring and diagnostics 0 2011
 
FIELD DIAGNOSTIC SERVICES, INC. (1)
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FIELD DIAGNOSTICS SERVICES, INC. (1)
6,658,373 Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment 40 2001
 
FILED DIAGNOSTICS SERVICES INC (1)
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INDEX SENSORS AND CONTROLS, INC. (1)
5,761,918 Integrated controller for commercial vehicle air conditioning system 10 1995
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
6,073,455 Refrigerant leakage warning device for apparatus having refrigeration cycle using flammable refrigerant 3 1999
 
NUOVO PIGNONE HOLDING S.P.A. (1)
7,785,078 Method and system for monitoring a reciprocating compressor 0 2003
 
PARKER-HANNIFIN CORPORATION (1)
6,715,304 Universal refrigerant controller 5 2002
 
SANYO ELECTRIC CO., LTD. (1)
6,158,230 Controller for air conditioner 21 1999
 
STARGATE INTERNATIONAL, INC. (1)
7,234,313 HVAC monitor and superheat calculator system 1 2004
 
TEXAS INSTRUMENTS INCORPORATED (1)
5,691,940 Method and apparatus for programmable current limits 2 1996
 
THE PRODUCT GROUP, LLC (1)
7,975,498 Intelligent controller for refrigerating and air conditioning systems 0 2006
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (4)
6,148,625 Frost and freeze-up prevention control system for improving cooling system efficiency in vending machines 1 1999
6,257,005 Air conditioner pressure status meter and warning device 2 2000
6,397,607 Preemptive frost and freeze-up prevention control system and method 2 2000
7,082,380 Refrigeration monitor 5 2003