Dual zone air-conditioning system for motor vehicles with improv

Details Dual zone air-conditioning system for motor vehicles with improv Dual zone air-conditioning system for motor vehicles with improv

1994-09-30

1998-03-10

Ford, John K.

Heat exchange

With timer, programmer, time delay, or condition responsive...

Having heating and cooling capability

165 42, 165 43, 236 493, 236 1B, 454 75, F25B 2900, B60H 100

Patent

active

057250529

ABSTRACT:
An air-conditioning apparatus for allowing the temperatures of a first air-conditioning zone and a second air-conditioning zone to quickly approach the respective set temperatures by properly controlling the air flow rate and the ratio of fresh/recirculated air, even when the set temperatures differ from one another. The device includes a controller that determines whether the system is in a transitional period or in a steady state based on the deviation of the compartment temperature detected by the compartment temperature sensor from the first and second set temperatures for the first and second zones. If a determination is made that the system is in a transitional period, the controller acts to determine the flow rates of air being supplied to respective blowers as well as making the determination concerning the guidance ratio of the fresh to recirculated air.

REFERENCES:
patent: 4406397 (1983-09-01), Kamata et al.
patent: 4460036 (1984-07-01), Yoshimi et al.
patent: 4482009 (1984-11-01), Nishimura et al.
patent: 4533080 (1985-08-01), Clark et al.
patent: 4537245 (1985-08-01), Nishimura et al.
patent: 4919195 (1990-04-01), Tanino
patent: 5074463 (1991-12-01), Suzuki et al.
patent: 5209397 (1993-05-01), Arold et al.

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