Refrigeration – Processes – Defrosting or frost inhibiting
Patent
1991-11-21
1992-11-03
Cohan, Alan
Refrigeration
Processes
Defrosting or frost inhibiting
62199, 62278, F25B 1300
Patent
active
051598175
ABSTRACT:
A method for controlling a refrigerant path apparatus including a pressurized gas refrigerant path for a flow of a pressurized gas refrigerant which has not been substantially cooled to be liquefied, a pressurized liquid refrigerant path for a flow of a pressurized liquid refrigerant which is generated from the pressurized gas refrigerant by being cooled to be liquefied, a first heat exchanger means which is fluidly connected to the pressurized gas refrigerant path to supply the pressurized gas refrigerant into the first heat exchanger so that a heat exchange is carried out between the pressurized gas refrigerant in the first heat exchanger and the outside of the first heat exchanger, comprises the steps of allowing a flow of the refrigerant from the pressurized gas refrigerant path to the pressurized liquid refrigerant path when a supply of the pressurized gas refrigerant from the pressurized gas refrigerant path into the first heat exchanger means is prevented, and preventing the flow of the refrigerant from the pressurized gas refrigerant path to the pressurized liquid refrigerant path when the supply of the pressurized gas refrigerant form the pressurized gas refrigerant path into the first heat exchanger means is allowed.
REFERENCES:
patent: 4122686 (1978-10-01), Lindahl
patent: 4854130 (1989-08-01), Naruse
patent: 4949551 (1990-08-01), Gregory
patent: 5107684 (1992-04-01), Nakayama et al.
Hojo Toshiyuki
Nakayama Susumu
Oguni Kensaku
Tokusa Kenji
Cohan Alan
Hitachi , Ltd.
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