Heat exchange – With valve or movable deflector for heat exchange fluid flow – With by-pass of heat exchanger or heat exchanger section
Patent
1981-12-01
1984-03-20
Cline, William R.
Heat exchange
With valve or movable deflector for heat exchange fluid flow
With by-pass of heat exchanger or heat exchanger section
165 16, 165 42, 165 43, 236 49, 364148, 364424, B60H 100, B60H 300
Patent
active
044373910
ABSTRACT:
In an air conditioning system for an automobile the indoor-outdoor air change-over door is controlled by a noxious gas sensor in the outdoor air. The output signal of the gas sensor is compared by a microcomputer to a reference signal which is determined by the minimum value of the output signal of the gas sensor produced from the time when the gas sensor is energized to the time when it is deenergized. The microcomputer outputs a signal causing an actuator to move the change-over door from the outdoor air introduction mode to the indoor air recirculation mode when the difference between the output signal of the gas sensor and the reference level exceeds a predetermined amount.
REFERENCES:
patent: 4164172 (1979-08-01), Anderten et al.
patent: 4259722 (1981-03-01), Iwata et al.
patent: 4289195 (1981-09-01), Bellot et al.
patent: 4352321 (1982-10-01), Fukui et al.
Eguchi Osamu
Fukui Tomonori
Cline William R.
Ford John K.
Nippondenso Co. Ltd.
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