System for controlling flow rate of refrigerant

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4745767
SERIAL NO

07024365

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A system for controlling the flow rate of a refrigerant for refrigeration cycles which comprises an electronic expansion valve disposed at the inlet of an evaporator and a controller for controlling the opening-closing movement of the valve. The controller comprises a calculating unit for comparing the degree of superheat of the refrigerant measured at the evaporator with a preset degree of superheat and feeding a valve opening adjusting signal to the valve according to the value obtained by the comparison, and a valve full-closing signal generator for comparing the measured temperature of the space to be cooled with a preset temperature and feeding a valve full-closing signal to the valve based on the value obtained from the comparison of temperatures, in preference to the opening adjusting signal.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SANYO ELECTRIC CO., LTD.OSAKA3046

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoshi, Katsuhiko Ohta, JP 5 151
Ohya, Satoshi Ohizumi, JP 21 196

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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ELSAG INTERNATIONAL B.V., A CORP. OF THE NETHERLANDS (1)
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
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