Turbomachine, in particular for a fuel cell system, fuel cell system, method for operating a turbomachine, and method for operating a fuel cell system
AssigneeRobert Bosch GmbH
InventorsAndreas Wengert, Tobias Reinhard Ott
Life of this patent
Estimating the term…
Abstract
Turbomachine (10), in particular for a fuel cell system (1). The turbomachine (10) comprises a compressor (11), a drive device (20) and a shaft (14). The compressor (11) has a rotor (15) arranged on the shaft (14), a compressor inlet (11a) and a compressor outlet (11b). A working fluid can be delivered from the compressor inlet (11a) to the compressor outlet (11b). A drive cooling path (92) for cooling the drive device (20) branches off at the compressor outlet (11b). Also proposed is a fuel cell system (1) with a turbomachine (10) according to the invention, a method for operating the turbomachine (10) and a method for operating the fuel cell system (1).
Claims28
A turbomachine (10), comprising a compressor (11), a drive device (20), and a shaft (14), wherein the compressor (11) has an impeller (15) arranged on the shaft (14), a compressor inlet (11a), and a compressor outlet (11b), wherein the compressor (11) is configured to deliver a working fluid from the compressor inlet (11a) to the compressor outlet (11b), characterized in that a drive cooling path (92) branches off at the compressor outlet (11b) in order to cool the drive device (20),
- wherein a cooling valve (95) is arranged in the drive cooling path (92),
- wherein a regulation unit (100) is provided which controls the degree of opening of the cooling valve (95) in order to adjust an actual value of the temperature of the medium in the drive cooling path (92) to a target value of the temperature, and
- wherein the regulation unit (100) controls the degree of opening of the cooling valve (95) depending on the target value of the temperature of the medium in the drive cooling path (92) and depending on a desired bypass mass flow.
Dependencies are inferred from the claim text.