Kaeser Kompressoren Se

Gerald Weih

Andreas Foerster

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 rotor pair for a compressor block of a screw machine, wherein the rotor pair comprises a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis, wherein the number of teeth of the main rotor is 3 and the number of teeth of the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rkis an addendum circle radius drawn around the outer circumference of the secondary rotor and rfis a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance of the first axis from the second axis and the addendum circle radius rkis at least 1.636, and at most 1.8, preferably at most 1.733.

Rotor pair for a compression block of a screw machine

A rotor pair for a compressor block of a screw machine includes a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis. The number of teeth of the main rotor is 3 and the number of teeth of the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5 rk1 is an addendum circle radius drawn around the outer circumference of the secondary rotor and rf1 is a dedendum circle radius starting at the profile base of the secondary rotor. The ratio of the axis distance of the first axis from the second axis and the addendum circle radius rk1 is at least 1.636.

The invention relates to a rotor pair for a compressor block of a screw machine, wherein a rotor pair comprises a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis, wherein the number of teeth of the main rotor is 3 and the number of teeth of the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rk1 is an addendum circle radius drawn around the outer circumference of the secondary rotor and rf1 is a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance of the first axis from the second axis and the addendum circle radius rk1 is at least 1.636, and at most 1.8, preferably at most 1.733.

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Rodental, Germany

Gerald Weih