| 摘要 |
The invention relates to an electrically driven pump for gases or gas mixtures having a pump housing and a motor housing, wherein a radial pump having a pump impeller is formed in the pump housing, wherein the pump impeller is connected to a drive shaft which extends through a wall of the pump housing into the motor housing, where the drive shaft is connected to a rotor of an electric motor, wherein at least one air gap is formed between the drive shaft and the wall of the pump housing, wherein a pump inlet, which is arranged in the central region of the pump impeller, is formed in the pump housing, and wherein a pressure side is formed in the pump housing, which pressure side is arranged in the outer radial region of the pump impeller. In order to provide a cost-effective, electrically driven pump for gases or gas mixtures which operates error-free over a long period of use, an opening through the pump housing is formed in the region of the pressure side, which opening connects the interior of the pump housing to the interior of the motor housing, such that the pressure prevailing on the pressure side can propagate into the interior of the motor housing. |
