Turbomachine
AssigneeContinental Automotive GmbH
InventorsKlaus-Werner Bender, Peter Köppler
Life of this patent
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Abstract
A turbomachine includes a housing and an electric motor in the housing. The electric motor has a shaft, a stator, and a rotor on the shaft. At least one impeller is arranged in a pump housing and driven by the shaft, the impeller having at least one ring of rotor blades delimiting a ring of blade chambers. A side channel is arranged in the pump housing opposite the ring of blade chambers and extends from the pump inlet as far as the pump outlet. A ramp is arranged at an end of the side channel in a radially inner half of the side channel. The ramp starts from a channel bottom, rises in a flow direction as far as the height of the pump housing wall, and merges with its radially outer half into the pump outlet.
Claims2
A turbomachine comprising:
- a motor housing (1);
- an electric motor (2) arranged in the motor housing (1), the electric motor comprising:
- a shaft (5),
- a stator (3), and
- a rotor (4) arranged on the shaft (5);
- a pump housing (7) having a pump bottom (8), a pump cover (9), and a pump housing wall (16), the pump cover (9) having a pump inlet (13) and a pump outlet (14), at least a portion of the pump housing wall (16) forming a pump stripper (20) extending between the pump outlet (14) and the pump inlet (13);
- at least one impeller (6) arranged in the pump housing (7) and driven by the shaft (5), the at least one impeller (6) having at least one ring of rotor blades (11) that delimit a ring of blade chambers;
- a side channel (12) arranged in the pump housing (7), the side channel (12) being arranged opposite the ring of blade chambers, the side channel (12) extending from the pump inlet (13) as far as the pump outlet (14);
- and
- a ramp (15) arranged at an end of the side channel (12) in a radially inner half (18) of the side channel (12), said ramp (15) starting from a channel bottom (17), rising, with a ramp surface having a convex curvature in a direction of the impeller (6), in a flow direction as far as a height of the pump housing wall (16), the ramp surface merging, along its entire width, into the stripper (20), so as to effect a flow deflection such that only flow over a radially outer half (19) of the side channel (12) merges into the pump outlet (14) and such that all of the flow that does not flow into the pump outlet (14) is deflected by the ramp (15) so as to rise as far as the height of the pump housing wall (16),
- wherein the ramp (15) is arranged with respect to the flow direction such that the ramp (15) and an opening of the side channel (12) into the pump outlet (14) overlap.
Dependencies are inferred from the claim text.