US Patent No: 5,177,973

Number of patents in Portfolio can not be more than 2000

Refrigeration system subcooling flow control valve

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Importance

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Abstract

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A flow control valve is disclosed in a household refrigeration appliance having a vapor compression refrigeration system comprising a cyclically operated compressor, a condenser, an evaporator and an expansion device between the condenser and the evaporator. The refrigerant flow control valve is disposed between the condenser and the evaporator and comprises a housing defining a refrigerant flow chamber for receiving liquified refrigerant from the condenser outlet, valve seat structure defining a refrigerant flow port for communicating refrigerant from the condenser to the evaporator, and a flow controlling valve assembly coacting with the valve seat structure to control the refrigerant flow from the refrigerant flow chamber to the expansion device. The flow control valve controls system refrigerant flow in response to subcooling, blocks refrigerant flow from the condenser when the compressor is cycled off and enables circulation of hot gaseous refrigerant under extreme high temperature ambient conditions.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
RANCO INCORPORATED OF DELAWAREWILMINGTON, DE268

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cholkeri, Pandu R Worthington, OH 4 56
Smith, Owen S Powell, OH 2 6

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SANDEN CORPORATION (14)
4,485,635 Control device for a compressor in a refrigerating system 21 1982
4,498,311 Control device for a variable displacement compressor in an air conditioning system 10 1983
4,539,821 Capacity control device for controlling a variable displacement compressor in an air conditioning system 18 1984
4,633,674 Refrigeration circuit 9 1985
4,637,220 Refrigeration system for both vehicle air conditioner and refrigerator 22 1985
4,753,083 Device for controlling the capacity of a variable capacity compressor 30 1987
4,773,472 Control device for a refrigerating apparatus of a vending machine 5 1987
4,779,425 Refrigerating apparatus 23 1987
4,780,059 Slant plate type compressor with variable capacity mechanism with improved cooling characteristics 38 1987
4,778,348 Slant plate type compressor with variable displacement mechanism 26 1987
4,780,060 Slant plate type compressor with variable displacement mechanism 47 1987
4,747,753 Slant plate type compressor with variable displacement mechanism 32 1987
4,840,038 Control device for use in a refrigeration circuit 10 1987
4,788,828 Control device for use in a refrigeration circuit 12 1988
 
EMERSON ELECTRIC CO. (2)
4,459,819 Pulse controlled expansion valve and method 42 1982
4,893,782 Metallic seat for fluid valve 5 1988
 
CARRIER CORPORATION (1)
4,429,552 Refrigerant expansion device 11 1982
 
EATON CORPORATION (1)
4,335,742 Evaporator pressure regulator 7 1977
 
Fuji Koki Manufacturing Oc., Ltd. (1)
4,254,634 Control valve to be employed for refrigerator and air conditioner 6 1977
 
RANCO INCORPORATED OF DELAWARE (1)
4,267,702 Refrigeration system with refrigerant flow controlling valve 24 1979
 
SANYO ELECTRIC CO., LTD. (1)
4,745,767 System for controlling flow rate of refrigerant 52 1987

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
EARTHLINKED TECHNOLOGIES, INC. (1)
7,987,681 Refrigerant fluid flow control device and method 1 2006
 
FUJIKOKI CORPORATION (1)
5,996,900 Thermostatic subcooling control valve 5 1998
 
NORDYNE LLC (1)
7,784,296 System and method for controlling an air conditioner or heat pump 1 2007