Refrigeration – With means preventing or handling atmospheric condensate... – Means utilizing heat developed by refrigeration producer
Reexamination Certificate
2005-08-23
2005-08-23
Jones, Melvin (Department: 3744)
Refrigeration
With means preventing or handling atmospheric condensate...
Means utilizing heat developed by refrigeration producer
C062S081000, C062S324100
Reexamination Certificate
active
06931880
ABSTRACT:
A method of defrosting of a heat exchanger (evaporator) in a vapor compression system including, downstream of a heat exchanger (evaporator) (3) to be defrosted, at least a compressor (1), a second heat exchanger (condenser/heat rejecter) (2), and an expansion device (6) connected by conduits in an operable manner to form an integral closed circuit. The heat exchanger (3) to be defrosted is subjected to essentially the same pressure as the compressor's (1) discharge pressure. Thus, the heat exchanger (3) is defrosted as the high-pressure discharge gas from the compressor (1) flows through to the heat exchanger, giving off heat to the heat exchanger (3). In the circuit, in connection with the expansion device (6) a first bypass loop23with a first valve (16′), is provided. A pressure reducing device (6′) is provided in a second bypass loop in conjunction with a second valve (16′″) disposed downstream of the heat exchanger (3) being defrosted, whereby the first valve (16′) is open and the second valve (16′″) is closed when defrosting takes place.
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Aflekt Kåre
Brendeng Einar
Hafner Armin
Nekså Petter
Pettersen Jostein
Jones Melvin
Sinvent AS
Wenderoth, Lind & Ponack. L.L.P.
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