Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Reexamination Certificate
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.
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Jones et. al., “Engineering Thermodynamics”, Prentice Hall, Englewood Cliffs, New Jersey, pp. 90-101, 1996.
Ikemoto Tooru
Matsunaga Hisatsugu
Nishijima Haruyuki
Takeuchi Hirotsugu
Denso Corporation
Harness Dickey & Pierce PLC
Nalven Emily
Rahim Azim
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