Piston compressor

Kolbenmkompressor

Abstract

In its piston 5, the piston compressor has a cavity 23 which can be connected by way of a non-return valve 27 to the compression chamber 19 and is connected to the outside of the piston jacket between the first and the second piston ring 6, 7 by radial holes 28 through the said piston jacket. On the inside, the cylinder 3 has axial grooves 31 which begin at its upper end and which communicate with the radial holes 28 only in the top dead centre position of the piston 5. By means of this device, a large pressure reduction in the compression chamber 19 is obtained in the top dead centre position by pressure equalisation taking place from the compression chamber 19 to the cavity 23, thereby avoiding a negative driving torque after passing through the top dead centre position of the piston 5. <IMAGE>

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Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    DE-3211598-A1November 03, 1983Daimler Benz AgHubkolben-luftpresser
    DE-3514119-A1October 23, 1986Kloeckner Humboldt Deutz AgMethod for operating a compressor having at least two cylinders, and device for implementing the method
    US-2158351-AMay 16, 1939Outboard Marine & Mfg CoValved piston
    US-2596004-AMay 06, 1952Phillips Petroleum CoClearance pocket type compressor piston

NO-Patent Citations (1)

    Title
    DE-Buch: Bouche/Wintterlin, Kolbenverdichter, Springer-Verlag, 1960, S. 129

Cited By (12)

    Publication numberPublication dateAssigneeTitle
    DE-102012010731-A1December 05, 2013Wabco GmbhÖlgeschmierter Kolbenverdichter
    DE-19639555-C1November 20, 1997Knf Neuberger GmbhHubkolbenmaschine
    DE-19743444-A1April 08, 1999Man Nutzfahrzeuge AgVorrichtung zur Vermeidung von Rückexpansion bei Kolbenverdichtern
    DE-19743444-C2December 16, 1999Man Nutzfahrzeuge AgVorrichtung zur Vermeidung von Rückexpansion bei Kolbenverdichtern
    DE-4018055-A1December 12, 1991Man Nutzfahrzeuge AgVerfahren zur verminderung von getriebegeraeuschen bei kolbenverdichtern, sowie vorrichtung zur durchfuehrung dieses verfahrens
    EP-0907022-A2April 07, 1999Man Nutzfahrzeuge AgDispositif pour éviter des retours de détente gênants dans un compresseur à piston
    EP-0907022-A3June 20, 2001Man Nutzfahrzeuge AgDispositif pour éviter des retours de détente gênants dans un compresseur à piston
    GB-2403997-AJanuary 19, 2005Westport Res IncReciprocable piston with a fluid scavenging system and method of scavenging a fluid
    GB-2403997-BMay 04, 2005Westport Res IncReciprocable piston with a fluid scavenging system and method of scavenging a fluid
    US-5895208-AApril 20, 1999Knf Neuberger GmbhReciprocating piston machine with capillary passages on valves for pressure relief
    US-7117783-B2October 10, 2006Westport Power Inc.Reciprocable piston with a fluid scavenging system and method of scavenging a fluid
    WO-03083300-A1October 09, 2003Westport Research Inc.Reciprocable piston with a fluid scavenging system and method of scavenging a fluid