Rolling piston compressor with defined dimension ratios for the

Details Rolling piston compressor with defined dimension ratios for the Rolling piston compressor with defined dimension ratios for the

1991-06-19

1993-07-13

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

With relatively movable partition member

418 94, 418 96, 418150, F04C 18356, F04C 2902

Patent

active

052267970

ABSTRACT:
The invention refers to a hermetic compressor with rotary rolling piston, of the type of high internal pressure inside the shell (1) and small displacement volume, and with its cylindrical chamber, internal to the cylinder block (4), being internally divided by the rolling piston (50,500) and by a sliding vane (9), into suction and discharge chambers with internal pressure being considerably lower than the internal pressure of the shell during most of the rolling piston (50,500) operating cycles. An axial gap for the passage of lubricant oil is provided between the annular faces of the rolling piston (50,500) and the axial end walls (10a, 20a) of the cylindrical chamber. The rolling piston (50,500) presents an external diameter/internal diameter relation of about 1.63 up to 2.22, in order to increase the radial path of the lubricant oil through said axial gaps.

REFERENCES:
patent: 2669384 (1954-02-01), Dills
patent: 4265605 (1981-05-01), Ito
patent: 4624630 (1986-11-01), Hirahara et al.
patent: 4626180 (1986-12-01), Tagawa et al.
patent: 4676726 (1987-06-01), Kawaguchi et al.

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