Control system for controlling the internal volume in a rotary compressor

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United States of America Patent

PATENT NO 4877380
SERIAL NO

07162954

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Adjustable valve bodies are used on the outlet side for controlling the internal volume of a rotary compressor. External control means, often of an extremely complicated nature, have been used to control the internal volume in the rotary compressor. By allowing the different pressure levels of the rotary compressor directly influence a control section (1), the position of the valve body (3) can be controlled by an operating section (2). In the control section a spring pressure and a medium pressure (9) from the compressor are balanced by a plunger (6) against a pressure from the high-pressure side (19) of the compressor. The position of the plunger (6) then determines control of the internal volume via the setting of the valve body (3) connected to the operating device (2).

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Patent Owner(s)

Patent OwnerAddress
STAL REFRIGERATION ABS-601 87 NORRKÖPING

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Glanvall, Rune Norrkoping, SE 3 38

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