Heat pump

Details Heat pump Heat pump

2008-04-01

2008-04-01

Norman, Marc (Department: 3744)

Refrigeration

Processes

Compressing, condensing and evaporating

C062S160000, C062S196100, C062S222000, C062S401000, C062S498000

Reexamination Certificate

active

07350366

ABSTRACT:
The present invention provides a heat pump including: a compressor; a radiator; a first throttling device having a variable opening; an expander; a second throttling device having a variable opening; an evaporator; piping that connects the compressor, the radiator, the first throttling device, the expander, the second throttling device, and the evaporator so that refrigerant circulates thorough the elements in that order; and a control device for controlling the opening of the first throttling device and the opening of the second throttling device. This heat pump is capable of independently controlling the pressure of the refrigerant flowing into the expander (intermediate pressure) and pressure in a high-pressure side of a refrigeration cycle, and also is capable of size reduction, or in some cases elimination, of a receiver for the refrigerant.

REFERENCES:
patent: 6923016 (2005-08-01), Funakoshi et al.
patent: 2007/0068178 (2007-03-01), Honma et al.
patent: 2001-66006 (2001-03-01), None
patent: 2003-74999 (2003-03-01), None
patent: 2003-121018 (2003-04-01), None

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