Automotive air conditioner compressor

Details Automotive air conditioner compressor Automotive air conditioner compressor

1976-11-03

1978-06-13

Freeh, William L.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417505, 62230, 62323, F04R 4900, F25B 2700

Patent

active

040946177

ABSTRACT:
A magnet is fixed to a rotor shaft and a ferromagnetic cup which is magnetically coupled to the magnet is urged opposite to the direction of rotation of the rotor shaft by a spring. An occluder plate is fixed to the cup and is movable into alignment with a fluid inlet to block the same. As the speed of the automobile and thereby the compressor rotor shaft speed increase the magnetic fields resulting from eddy currents induced by the magnet in the cup increase and the degree of magnetic coupling thereby increases so that the cup is rotated further against the force of the spring causing the occluder plate to block the inlet to a greater extent so that the compressor output and thereby the cooling effect of the air conditioner are maintained at a substantially constant value.

REFERENCES:
patent: 1475757 (1963-11-01), Dyson
patent: 1884702 (1932-10-01), Hubacker
patent: 2302847 (1942-11-01), Ferguson
patent: 2318893 (1943-05-01), Smith
patent: 2961147 (1960-11-01), Osterkamp
patent: 3671148 (1972-06-01), Reeve
patent: 3941517 (1976-03-01), Miyahara
patent: 4013384 (1977-03-01), Oikawa

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