Abstract: A turbo machine system having an intake structure for air inflow and a cooling structure for a driving motor, and including a driving unit having a rotor and a stator, a compression unit having an impeller that rotates in conjunction with the rotor, guide piping that guides driving unit cooling fluid that flows into the driving unit and is discharged to the outside through the inside of the driving unit and into the compression unit, and external fluid inflow piping that is provided on one side of the guide piping and is provided to communicate with the guide piping, the external fluid inflow piping guiding the external fluid by the differential pressure between the end of the external fluid inflow piping and the inside of the guide piping so as to flow into the guide piping.

Abstract: A plant for storing energy by means of compressed air, in which: a storage volume accommodates air at elevated pressure pH; for energy storage, ambient air is compressed and introduced into the storage volume; for removal from storage, compressed air is extracted from the storage volume and discharged into the environment, performing work; at least one low-pressure turbomachine for alternate compression and expansion respectively compresses ambient air to a medium pressure pM and expands said ambient air from said pressure; at least one high-pressure machine for alternate compression and expansion respectively compresses air from the medium pressure pM to the store pressure pH and expands said air from the latter pressure; and said low-pressure turbomachine and high-pressure machine are connected in series in terms of flow and are mechanically coupled to in each case one, or to one common, electric machine that operates selectively as a motor and generator.

Abstract: The present invention relates to a turbo machine system that provides improved overall compression efficiency and has an intake structure for air inflow and a cooling structure for a driving motor. The turbo machine system includes: a driving unit that has a rotor and a stator; a compression unit that has an impeller which rotates in conjunction with the rotor; guide piping that guides the cooling fluid of the driving unit, which flows into the driving unit and is discharged to the outside through the inside of the driving unit and into the compression unit; and external fluid inflow piping that is provided on one side of the guide piping and is provided to communicate with the guide piping, wherein the external fluid inflow piping guides the external fluid by means of the differential pressure between the end of the external fluid inflow piping and the inside of the guide piping so as to flow into the guide piping.

Abstract: The invention relates to a device for producing compressed air or other pressurized gases, having at least one high pressure compressor (12) and one low pressure compressor (11), and, in particular, a downstream gas store (reservoir 13). According to the invention, the high pressure compressor is a turbomachine with adjustable guide vanes and is flowed through alternately in one direction as a compressor or in the other direction as an expansion machine.

Abstract: A plant for storing energy by means of compressed air, in which: a storage volume accommodates air at elevated pressure pH; for energy storage, ambient air is compressed and introduced into the storage volume; for removal from storage, compressed air is extracted from the storage volume and discharged into the environment, performing work; at least one low-pressure turbomachine for alternate compression and expansion respectively compresses ambient air to a medium pressure pM and expands said ambient air from said pressure; at least one high-pressure machine for alternate compression and expansion respectively compresses air from the medium pressure pM to the store pressure pH and expands said air from the latter pressure; and said low-pressure turbomachine and high-pressure machine are connected in series in terms of flow and are mechanically coupled to in each case one, or to one common, electric machine that operates selectively as a motor and generator.

Abstract: Compressors with two cylinders in a horizontally opposed arrangement are known. The compressor according to the invention has a vertically aligned crankshaft. The electric drive motor is arranged underneath the cylinders and provided with a radial fan. The cooling air flows upwards along the drive motor and along the cylinders.

Abstract: The present invention relates to a drive assembly having an endless rotating drive element which runs over a driving gear of a motor and a driven gear of a machine and a tensioning device for the drive element. The motor is arranged on a support which is supported in a positionally variable manner on a frame that carries the machine, and which is pretensioned vertically downwards by both the weight (G) of the motor and a pretensioning force (F) of a pretensioning unit which acts substantially in parallel with the weight (G) of the motor.

Abstract: A parallel-and-external-axis rotary piston compressor includes a housing provided with an inlet and a discharge port and at least two rotors as the main and gate rotors. These are edged with screw-likely extended tooth spaces and are arranged to interengage and with their axes parallel. The tooth profiles of the main rotor are designed to be substantially convex and outside of the pitch circle and the tooth flanks of the gate rotor are designed to be substantially concave and within the pitch circle. In order to guarantee a simple and low-cost manufacture, a robust design and small clearances both for the main and the gate rotors, with a low wear during operation, both flanks of the main rotor teeth are surfaces conforming to the envelope of a helical plane inclined with respect to the axis of the helix and which follow a constant curve course continuously from the tooth root to the tooth crest.