Patent ID: 7316546
Filing Date: 2008-01-08
Classification: F04C

Abstract:
1. Volumetric compressor, comprising a compressor element, injected by lubricating liquid, with a compression chamber, to which an inlet conduit, which can be closed off by means of an inlet valve, and a pressure conduit, in which a pressure vessel is installed, are connected, whereby the inlet valve comprises a valve element cooperating with a valve seat, said element being connected to a piston which can be displaced in a hollow space in a cylinder-forming housing, and a springy element which pushes this valve element towards the valve seat, whereas a control conduit puts the interior of the pressure vessel into connection with a cylinder chamber which is formed between the operative side of the piston and the housing, wherein the valve element is bypassed by a bypass with therein a return valve allowing only a flow towards the compression chamber, and the cylinder chamber is connected to the inlet conduit by means of a connection conduit, with therein a load valve which can be controlled by means of a control device, wherein a minimum cross-section of this connection conduit, with open load valve, is larger than a minimum cross-section of the control conduit.