Valved discharge mechanism in a refrigerant compressor

Details Valved discharge mechanism in a refrigerant compressor Valved discharge mechanism in a refrigerant compressor

1993-09-21

1995-01-10

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418270, 137856, F04C 2900, F16K 1516

Patent

active

053801768

ABSTRACT:
A refrigerant compressor includes a compressor housing defining a chamber in which successive strokes of intake, compression, and discharge of a refrigerant gas are repeatedly performed. The chamber is divided into a compression chamber and a discharge chamber by a valve plate. A discharge hole links the compression chamber to the discharge chamber. The valve plate includes an end surface which faces the discharge chamber. A discharge valve regulates a flow of the refrigerant gas from the compression chamber to the discharge chamber. A valve retainer limits the bending movement of the discharge valve in the direction in which the refrigerant gas exits the discharge hole. The valve retainer is secured to an axial end surface of the valve plate together with the discharge valve by a fixing bolt. The discharge valve bends as it opens and closes the discharge hole. The valve plate includes an annular groove formed at the end surface thereof. The annular groove surrounds the discharge hole and is entirely overlaid by the discharge valve. Also, an air gap may be formed between the discharge valve and the valve plate. Thereby, noise due to resonant vibration caused by the discharge valve can be effectively reduced or eliminated.

REFERENCES:
patent: 2647683 (1953-08-01), Schweller
patent: 4011029 (1977-03-01), Shimizu
patent: 4444219 (1984-04-01), Hollenstein
patent: 4642037 (1987-02-01), Fritchman
patent: 4978285 (1990-12-01), Da Costa
patent: 5203686 (1993-04-01), Scheldorf et al.

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