Ejector cycle

Details Ejector cycle Ejector cycle

2011-01-18

2011-01-18

Nalven, Emily (Department: 3784)

Refrigeration

Refrigeration producer

Compressor-condenser-evaporator circuit

C062S116000, C062S197000, C062S509000

Reexamination Certificate

active

07870758

ABSTRACT:
In an ejector cycle with an ejector including a nozzle for decompressing refrigerant, a control unit controls an air blowing amount of an evaporator fan so that a flow speed of refrigerant flowing in an evaporator becomes in a predetermined flow speed range. Therefore, it can prevent a large amount of lubrication oil from staying in the evaporator, and thereby the lubrication oil can sufficiently returns to a compressor. For example, the control unit includes a determining means for determining the predetermined flow speed range based on at least one of an atmosphere temperature of a condenser, a temperature of air supplied to the evaporator and a flow amount of refrigerant discharged from the compressor.

REFERENCES:
patent: 5444987 (1995-08-01), Alsenz
patent: 6477857 (2002-11-01), Takeuchi et al.
patent: 6705094 (2004-03-01), Alsenz
patent: 6729157 (2004-05-01), Oshitani et al.
patent: 2003/0213264 (2003-11-01), Ogata et al.
patent: 6-11197 (1994-01-01), None
Jones et. al., “Engineering Thermodynamics”, Prentice Hall, Englewood Cliffs, New Jersey, pp. 90-101, 1996.

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