Kaeser Kompressoren Se

Dirk Simross

Andreas Fredenhagen

The invention relates to a dry-compressing or oil-free compressor for generating a compressed gas and a method for oil separation for a dry-compressing compressor (). The compressor has a compressor housing (), a compression chamber () and at least one oil chamber (), in which an oil-lubricated bearing () of the rotor bearing () is accommodated, as well as a shaft seal arrangement (), which is arranged between the oil-lubricated bearing () and the compression chamber (). The shaft seal arrangement () has an outer seal () facing the oil-lubricated bearing () and an inner seal () facing the compression chamber (), wherein at least one sealing gas chamber () for receiving sealing gas is formed between the outer seal () and the inner seal (). The oil chamber () has at least one gas inlet for a sealing gas flow from the sealing gas chamber () and a gas outlet () for connection to an oil separator (). The oil chamber () provides an oil chamber pressure pthat exceeds the ambient pressure pof the compressor housing () by an oil separation pressure difference Δp.

Dry-compression compressor and method for oil separation for a dry-compression compressor

A compressor system for compressing gases in a multistage compression includes a next-to-last compressor in a flow direction and a last compressor which are connected in series, one or more intercoolers between the next-to-last compressor and the last compressor, and an adsorption dryer connected downstream of the last compressor and designed as a rotation dryer having a rotating adsorption chamber. An inside of the adsorption chamber includes a regeneration sector and a drying sector. The regeneration sector is connected to the last compressor such that the compressed gas stream output from the last compressor is guided in a full stream principle through the regeneration sector. A bypass line which bypasses the intercoolers is situated between next-to-last compressor and last compressor, and includes a setting element to set the gas stream guided via the bypass line and therefore the regeneration entry temperature of the compressed gas in the regeneration sector appropriately.

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Höchheim, Germany

Dirk Simross