Kaeser Kompressoren Se

Kaeser Kompressoren Gmbh

Andreas Foerster

Gerald Weih

Michael Feisthauer

Norbert Fischer

Florian Wagner

Andreas Fredenhagen

Kristian Dering

Klaus-Ulrich Kobelt

Stefan Rexhaüser

Stefan Rexhaeuser

The invention relates to a screw compressor comprising a compressor housing () having two rotor screws () mounted axially parallel therein, which mesh with each other in a compression space (), can be driven by a drive and are synchronized with each other in their rotational movement, wherein the rotor screws () each have a single-part or multi-part base body () with two end faces () and a profiled surface () extending therebetween, and shaft ends () projecting beyond the end faces (), wherein at least the profiled surface () is formed in multiple layers, comprising a first, inner layer () and a second, outer layer (), wherein the first, inner layer () and the second, outer layer () both comprise or are formed from a thermoplastic synthetic material, wherein particles () or pores () supporting a running-in process are embedded in the second, outer layer () and the thermoplastic synthetic material defines a matrix for receiving the particles () or for forming the pores ().

Screw compressor with multi-layered coating of the rotor screws

The invention relates to a method for the analysis of the compressed-air supply security of a compressed-air system which comprises one or more compressed-air generators (C, C) and supplies one or more compressed-air consumers via a compressed-air network (), characterized in that a time course of the maximum delivery volumetric flow rate MDVF(t) is recorded, estimated or calculated, that a time course of the consumption volumetric flow rate CVF(t) is recorded, estimated or calculated, and that for the analysis of the compressed-air supply security the time course of the maximum delivery volumetric flow rate MDVF(t) and the time course of the consumption volumetric flow rate CVF(t) are automatically offset against each other over an analysis period.

Method for analyzing the compressed-air supply security of a compressed-air system

A gas inlet valve () for a compressor (), comprising: a housing (); a valve device () arranged between a gas inlet portion () and a gas outlet portion (), a valve body () resting against a valve seat () in a sealing manner when the valve device () is in a closed operating state, and the valve body () being lifted from the valve seat () when the valve device () is in an open operating state; a piston device () which comprises a first piston portion () and a second piston portion () which is different from the first piston portion (), the first piston portion () being displaceably guided in a first cylinder portion () of the housing () and the second piston portion () being displaceably guided in a second cylinder portion () of the housing () which is different from the first cylinder portion (); and a piston rod () which is displaceably mounted in the housing () and mechanically couples the valve body () of the valve device () to the piston rod (), a fluid line () putting a first cylinder chamber () of the first cylinder portion () in operative fluid communication with the gas outlet portion (), it being possible to apply a control pressure to a second cylinder chamber () of the second cylinder portion () in order to lift the valve body () from the valve seat (). A rotary compressor comprising a gas inlet valve () of this type and a method for operating a compressor (), in particular a rotary compressor, comprising a gas inlet valve () of this type.

Gas inlet valve for a compressor, compressor comprising a gas inlet valve of this type and method for operating a compressor comprising a gas inlet valve of this type

A refrigerant dryer, in particular a compressed air refrigerant dryer, is provided for drying a gaseous fluid while cooling the gaseous fluid using a refrigerant. The dryer includes a pressure fluid-refrigerant agent-heat exchanger () in which a cooling of the gaseous fluid takes place directly or indirectly by a refrigerant conveyed in a primary loop (), one or more refrigerant compressor/compressors () for operating the primary loop, and a cold accumulator () with an accumulator-side heat exchanger () which couples an accumulator discharge fluid to a cold accumulator medium (). The pressure fluid-refrigerant agent-heat exchanger () and the cold accumulator () are fluidically connected or can be brought into fluidic connection via a discharge loop () for an accumulator discharge fluid. The cold accumulator () is arranged, relative to gravity, above the pressure fluid-refrigerant agent-heat exchanger (), in such a manner that the heated accumulator discharge fluid is conveyed through the discharge loop () for cooling in the cold accumulator (), is cooled there, and subsequently re-conveyed to the pressure fluid-refrigerant agent-heat exchanger ().

Refrigerant dryer

A compressed air filter and a filter element which is for separating foreign bodies from a compressed air stream and which has an element lower portion, an element upper portion which has a neck portion which forms a first flow channel and a collar portion which is constructed so as to extend at least partially around the neck portion and which is connected to the neck portion so as to form a second flow channel, and a filter medium which is sealingly connected to the element lower portion and the element upper portion in order to form a gas flow path between the first flow channel and the second flow channel through the filter medium, the collar portion having an abutment face, which is provided at least partially at the outer periphery and which tapers in the direction of the element lower portion, in order to receive an associated sealing ring in such a manner that a force which acts substantially axially on the sealing ring from the direction of the element lower portion brings about radial expansion of the sealing ring along the abutment face.

Filter element and compressed air filter for separating foreign matter from a compressed air stream

An air-cooled electric motor is provided, which may be used in a compressor assembly, including a motor unit with a motor housing out of which a drive shaft extends, such that the drive shaft drives a ventilator, the ventilator includes at least two radially and/or axially separated ventilator sections to propel a first airstream as well as at least one other, second airstream that is separate from the first airstream, such that the airstreams are conducted separately on both the inflow side of the ventilator and the outflow side of the ventilator.

Growing community of inventors

Doerfles-Esbach, Germany

Andreas Foerster