Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Patent
1987-02-26
1987-10-27
Freeh, W. L.
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
417270, F04B 4906
Patent
active
047026774
ABSTRACT:
A variable displacement wobble plate type compressor with a variable angle non-rotary wobble plate, having a suction chamber for a refrigerant before compression, a discharge chamber for a compressed refrigerant, suction and compression discharge cylinder bores, pistons reciprocated by the wobble plate within the cylinder bores for compressing the refrigerant, a crankcase with a crank chamber to receive therein a drive and a wobble plate mechanism mounted about a drive shaft connectable to a rotary drive source, i.e., a vehicle engine, connected to the pistons to cause reciprocating motion of the pistons and capable of changing the wobble angle thereof, a first communication passageway providing a fluid communication between the crankcase chamber and the discharge chamber, a first control valve for closing and opening the first passageway in response to a change in a suction pressure of the refrigerant, a second communication passageway for permitting evacuation of a blowby gas from the crankcase chamber to the suction chamber, and a second control valve changing an extent of opening of the second communication passageway in response to an increase in a fluid pressure within the crankcase chamber.
REFERENCES:
patent: 4533299 (1985-08-01), Swain
patent: 4533905 (1985-11-01), Swain
patent: 4606705 (1986-08-01), Parekh
patent: 4621983 (1986-11-01), Thomas
Kayukawa Hiroaki
Ohta Masaki
Suzuki Shin'ichi
Takenaka Kenji
Freeh W. L.
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
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