Refrigeration – Automatic control – Preventing – removing or handling atmospheric condensate
Reexamination Certificate
2006-02-07
2010-11-23
Jules, Frantz F (Department: 3744)
Refrigeration
Automatic control
Preventing, removing or handling atmospheric condensate
C062S151000, C062S155000, C062S234000, C165S231000, C165S232000, C165S233000
Reexamination Certificate
active
07836711
ABSTRACT:
Based on a result of detection taken by the high-low pressure difference detection means (93, 97) for detecting a difference between a high and a low pressure of a refrigeration cycle, an estimate of whether there is leakage of refrigerant in an expansion valve (52) is made. Based on the result detected by the high-low pressure difference detection means (93, 97), a control means (81) sets a reference temperature (T3) to a value corresponding to the degree of refrigerant leakage in the expansion valve (52).
REFERENCES:
patent: 5870899 (1999-02-01), Choi
patent: 6244057 (2001-06-01), Yoshida et al.
patent: 3-186135 (1991-08-01), None
patent: 04-177070 (1992-06-01), None
patent: 4-177070 (1992-06-01), None
patent: 10-26429 (1998-01-01), None
Kasahara Shin-ichi
Kojima Makoto
Birch & Stewart Kolasch & Birch, LLP
Comings Daniel C
Daikin Industries Ltd.
Jules Frantz F
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