Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1980-10-03
1982-10-19
Richter, Sheldon J.
Heat exchange
Movable heating or cooling surface
Rotary drum
62164, 165 27, 165 33, 165 43, 165103, F28F 2702
Patent
active
043545475
ABSTRACT:
A discharge air temperature control device which is provided in an air conditioning system for automotive vehicles, the device comprising a lever assembly for adjusting the angular position of an air-mix damper, a driving circuit for driving the compressor of the air conditioning system, and a switching device for opening or closing the driving circuit in response to an air flow temperature signal supplied from a temperature sensor, characterized in that means is provided which is responsive to a change in the angular position of the lever assembly to vary a reference temperature value with reference to which the switching device opens or closes the driving circuit. The frequency of actuation of the compressor can thus be reduced to thereby save energy to be consumed by the air conditioning system. Further provided is means for selectively changing the above-mentioned reference temperature value into two levels which vary at different rates of variation relative to a change in the angular position of the lever assembly. Provision of this reference temperature changing means permits interruption of the operation of the compressor driving circuit when dehumidifying operation is not required, thus further saving energy to be consumed by the air conditioning system.
REFERENCES:
patent: 3263739 (1980-10-01), Gaskill et al.
patent: 3433295 (1969-03-01), Avery
patent: 3490518 (1970-01-01), Herbon
patent: 3650318 (1972-03-01), Avery
patent: 4227569 (1980-10-01), Wattin
patent: 4316251 (1982-02-01), Saito et al.
patent: 4323111 (1982-04-01), Iijima
patent: 4325426 (1982-04-01), Otsuka
Diesel Kiki Co. Ltd.
Richter Sheldon J.
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