Refrigeration – Automatic control – Refrigeration producer
Patent
1995-10-06
1997-03-11
Wayner, William E.
Refrigeration
Automatic control
Refrigeration producer
62225, F25B 4100, F25B 4104
Patent
active
056090366
ABSTRACT:
An evaporator for cooling apparatus according to the present invention includes a cooled flow passages in a heat exchanging portion and a bypass flow passage bypassing the heat exchanging portion between a receiver for reducing the pressure (pressure P1) of liquefied refrigerant condensed by a condenser and an evaporator, which communicates in parallel with each other. A valve element is disposed in the bypass flow passage, and opens the bypass passage when the pressure P1 is equal to or less than a predetermined pressure where a refrigerant temperature within the cooled flow passage is more than a refrigerant temperature within a cooling flow passage when the refrigerant is introduced into the heat exchanging portion and where a refrigerant dryness is less than a predetermined value when the refrigerant is not introduced into the heat exchanging portion and pressure thereof is reduced directly to the refrigerant pressure within the evaporating portion. Thereby, the reverse heat exchange is prevented and a good heat exchange efficiency can be achieved for all the range of P1.
Hasegawa Etuo
Kakehashi Nobuharu
Nagasawa Toshiya
Nippondenso Co. Ltd.
Wayner William E.
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