Fan drive systems

Details Fan drive systems Fan drive systems

1975-10-01

1976-11-23

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Having distinct cooling or lubricating structure

60484, 60494, 60DIG5, F15B 1120

Patent

active

039928837

ABSTRACT:
A fan drive system comprises a constant pressure ring main circuit from a motor driven pump to, for example, three variable capacity motors driving three fans. The motors are connected in parallel with each other and in series circuit with the pump and each has a piston and cylinder device supplied with pressure from the ring main. A variable restrictor controlled by a temperature probe sets the pressure acting on each piston and cylinder device so that each fan is speed controlled in accordance with temperature.

REFERENCES:
patent: 2769394 (1956-11-01), Lauck
patent: 3348624 (1967-10-01), Just et al.
patent: 3874173 (1975-04-01), Wilkins

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