Refrigeration – Automatic control – Diverse – cascade or compound refrigeration-producing system
Reexamination Certificate
2005-09-20
2005-09-20
Tanner, Harry B. (Department: 3744)
Refrigeration
Automatic control
Diverse, cascade or compound refrigeration-producing system
C062S229000, C062S323100
Reexamination Certificate
active
06945061
ABSTRACT:
A control unit for variable displacement compressors is used for two independent air conditioning cycles, wherein two compressors1, 11driven by a common external drive source8include electromagnetic displacement control valves6, 16, respectively. By controlling these control valves by ECU7, the displacement of the compressor is variable. When the air temperature is higher than a predetermined temperature T0, both of the compressors are subjected to the variable displacement operation even though one of them is unnecessary for the air conditioning operation. On the contrary, if the outer air temperature is lower than the predetermined temperature, only one compressor, needed for the air conditioning operation, is subjected to the variable displacement operation, while the other compressor is subjected to the minimum displacement operation.
REFERENCES:
patent: 2242588 (1941-05-01), McGrath
patent: 2296741 (1942-09-01), Sanders, Jr.
patent: A-2000-220577 (2000-08-01), None
Denso Corporation
Posz Law Group , PLC
Tanner Harry B.
LandOfFree
Control unit for variable displacement compressors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control unit for variable displacement compressors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control unit for variable displacement compressors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3418034