Cushman, Darby & Cushman
Cooling control system and expansion valve therefor
 A cooling control system comprises a cooling apparatus having a refrigerant compressor, a vapor condenser, an expansion valve, an evaporator and a blower, a first temperature detection device for detecting a room temperature, a second temperature detection device for detecting a temperature of the refrigerant which is introduced into the evaporator, a detection device for detecting a temperature difference between a temperature of the refrigerant discharged from the evaporator and the temperature of the refrigerant introduced into the evaporator, and a control device for controlling operations of the compressor as well as the blower and for controlling an opening of the expansion valve in response to the detected inflowing refrigerant temperature, the detected temperature difference and the detected room temperature. 
Pacific Industrial Co. Ltd.
Y F F F G F F F F F F F F F F F F
Y02B F25B F25B F16K G05D F25B F24F F24F F25B F16K F16K F25B F25B F16K F16K F25B F16K
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Hideo Yoichi Seimi
Yamada Okubo Yoshikawa