Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Patent
1994-07-07
1998-07-07
Ford, John K.
Heat exchange
With timer, programmer, time delay, or condition responsive...
Having heating and cooling capability
165243, 165263, 165 42, 165 43, 165291, 165254, 62229, 62180, F25B 2900
Patent
active
057754152
ABSTRACT:
An air conditioning system for an automobile having an evaporator, in a refrigerating circuit, and a heater core which is located downstream from the evaporator in a duct having an inlet for introduction of air and an outlet for discharging the air into a cabin, and an air mix damper for controlling the ratio of the amount of air into the heater core and the amount of air by-passing the heater core. The degree of the opening of the air mix damper is controlled in accordance with the cooling capacity at the evaporator sensed by an after-evaporator temperature sensor so that a target value of the temperature of the air discharged into the cabin is obtained. A correction of the degree of opening of the air mix damper is done by estimating an actual temperature at the after-evaporator sensor during a transient state of the system between the ON and OFF conditions of a compressor, so that a desired setting of the air conditioning state is maintained.
The target air temperature is not corrected if it is determined that the system is in a heating mode.
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Honda Yuji
Ito Yuji
Kawai Takayoshi
Kawashima Masafumi
Samukawa Katsuhiko
Ford John K.
Nippondenso Co. Ltd.
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