Control system for controlling the internal volume in a rotary c

Details Control system for controlling the internal volume in a rotary c Control system for controlling the internal volume in a rotary c

1988-03-02

1989-10-31

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

418201, F04B 4902, F04C 1816

Patent

active

048773808

ABSTRACT:
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).

REFERENCES:
patent: 4222716 (1980-09-01), Shaw
patent: 4342199 (1982-08-01), Shaw et al.
patent: 4747755 (1988-05-01), Ohtsuki et al.

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