Refrigeration system subcooling flow control valve

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5177973
SERIAL NO

07671364

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

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.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
RANCO INCORPORATED OF DELAWAREWILMINGTON, DE41

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cholkeri, Pandu R Worthington, TX 4 82
Smith, Owen S Powell, OH 2 6

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SANYO ELECTRIC CO., LTD. (1)
* 4745767 System for controlling flow rate of refrigerant 85 1987
 
CARRIER CORPORATION (1)
* 4429552 Refrigerant expansion device 14 1982
 
EMERSON ELECTRIC CO. (2)
* 4459819 Pulse controlled expansion valve and method 44 1982
* 4893782 Metallic seat for fluid valve 7 1988
 
SANDEN CORPORATION (14)
* 4485635 Control device for a compressor in a refrigerating system 22 1982
* 4498311 Control device for a variable displacement compressor in an air conditioning system 11 1983
* 4539821 Capacity control device for controlling a variable displacement compressor in an air conditioning system 18 1984
* 4633674 Refrigeration circuit 12 1985
* 4637220 Refrigeration system for both vehicle air conditioner and refrigerator 22 1985
* 4753083 Device for controlling the capacity of a variable capacity compressor 30 1987
* 4773472 Control device for a refrigerating apparatus of a vending machine 6 1987
* 4779425 Refrigerating apparatus 25 1987
* 4780059 Slant plate type compressor with variable capacity mechanism with improved cooling characteristics 38 1987
* 4778348 Slant plate type compressor with variable displacement mechanism 26 1987
* 4780060 Slant plate type compressor with variable displacement mechanism 47 1987
* 4747753 Slant plate type compressor with variable displacement mechanism 32 1987
* 4840038 Control device for use in a refrigeration circuit 10 1987
* 4788828 Control device for use in a refrigeration circuit 12 1988
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
TGK CO., LTD. (1)
* 2008/0053,125 EXPANSION DEVICE 2 2007
 
NORTEK GLOBAL HVAC LLC (2)
* 7784296 System and method for controlling an air conditioner or heat pump 5 2007
* 2008/0216,500 SYSTEM AND METHOD FOR CONTROLLING AN AIR CONDITIONER OR HEAT PUMP 5 2007
 
Earthlinked Technologies, Inc. (1)
7987681 Refrigerant fluid flow control device and method 1 2006
 
FUJIKOKI CORPORATION (1)
* 5996900 Thermostatic subcooling control valve 5 1998
* Cited By Examiner