Refrigerant compressor having variable restriction pressure puls

Details Refrigerant compressor having variable restriction pressure puls Refrigerant compressor having variable restriction pressure puls

1991-02-08

1992-05-12

Bertsch, Richard A.

Pumps

Three or more cylinders arranged in parallel, radial, or...

417222R, 417312, 181403, F04B 2100, F01N 710

Patent

active

051121980

ABSTRACT:
A variable displacement refrigerant compressor includes a plurality of axially reciprocating pistons connected to a non-rotary wobble plate. A drive shaft supplies a rotational input to axially reciprocate the pistons within their respective cylinders. Gaseous refrigerant is admitted to each cylinder through a suction valve and discharged from each cylinder through a discharge valve. Each discharge valve opens to a common discharge cavity, wherein one fluid outlet provides egress for all refrigerant discharged from each of the cylinders. A variable restriction attenuator is disposed in the discharge cavity. The attenuator includes a first orifice having a movable valve member biased into sealing engagement therewith. The attenuator also includes at least one second orifice through which discharge fluid bypasses the movable valve member and first orifice and flows directly to the fluid outlet. The movable valve member may be either a spherical ball, poppet or flapper type valve.

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