Hoerbiger Kompressortechnik Holding Gmbh

Hoerbiger Kompressortechnik Services Gmbh

Gunther Machu

Bernhard Spiegl

Peter Steinrück

Markus Testori

Uwe Fuxa

Michael Miks

To reduce the clearance volume for a crank-side concentric suction and pressure valve, it is proposed to arrange a sealingaxially abutting on the suction and pressure valve, wherein the sealingconsists of a number of pressure packingswhich are arranged axially one behind the other.

Automatic concentric crank-side compressor valve

For stepless capacity control of a reciprocating piston compressor, an unloader () arranged on a suction valve () keeps open said suction valve () over a thereby controllable portion of the working cycle of the compressor by means of an unloading piston () biased by gas pressure via a control valve (). The gas pressure biasing the unloading piston () is always above the gas pressure required to overcome the maximum possible reverse flow force, whereby a controllable partial discharge of the unloading cylinder () is performed in each phase of the working cycle up to the closing of the suction valve () by means of the control valve (), which is designed to switch rapidly. The theoretical discharge time of the entire discharging volume for the partial discharge is preferably maximal nearly equal or even less than twice the duration of the working cycle.

Method of stepless capacity control of a reciprocating piston compressor and piston compressor with such control

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Vienna, Austria

Gunther Machu