Refrigeration – Reversible – i.e. – heat pump
Reexamination Certificate
2007-11-13
2007-11-13
Ali, Mohammad M. (Department: 3744)
Refrigeration
Reversible, i.e., heat pump
C062S434000
Reexamination Certificate
active
10514110
ABSTRACT:
In order to provide a thermo-siphon chiller refrigerator for use in cold districts which performs natural refrigerant-circulation refrigerating cycle and also can perform a forced refrigerant-circulation refrigerating cycle when outside air temperature is high by using an indoor heat exchanger, an outdoor heat exchanger, and a compressor, and combining them with refrigerant piping, the thermo-siphon chiller refrigerator for use in cold districts of the invention has a compressor (10) additionally installed to a natural refrigerant-circulation refrigerating system comprising an outdoor heat exchanger (12), an indoor heat exchanger (11) located at a position lower than that of the outer heat exchanger (12), and an expansion valve (18). When the refrigerating capacity of the natural refrigerant-circulation refrigerating system is not sufficient, the additional compressor (10) is operated to perform a forced refrigerant-circulation cycle i.e. a vapor compression refrigerating cycle.
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Koyatsu Masataka
Machida Akito
Tamura Yoshihisa
Crowell & Moring LLP
Mayekawa Mfg. Co., Ltd.
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