Patent ID: 6837689

Claim:
A pump for delivering a fluid comprising a housing which comprises an interior chamber which accommodates a rotatable delivery device for displacing a fluid from an intake region to a delivery region, a feed channel formed in the housing and which communicates with a jet chamber which in turn communicates via at least one suction channel to at least two suction chambers which communicate with the intake region of the pump, and an injector device for injecting a pressurized fluid via a jet nozzle into the at least one jet chamber so as to entrain the fluid which flows into the jet chamber from the feed channel, said jet chamber including an impact area which is impacted by the injected fluid, with the impact area comprising a transverse wall which is oriented so as to initially deflect all of the injected fluid and the entrained fluid in one direction along the at least one suction channel and then to the at least two suction chambers, and wherein the impact area and/or the one suction channel includes means for influencing the flow of the fluid so as to achieve essentially the same volume flow into the two suction chambers.