CPC F04C 2/102 (2013.01) [F04C 15/0046 (2013.01); F04C 15/0096 (2013.01); F04C 29/04 (2013.01); F04C 29/047 (2013.01)] | 4 Claims |
1. A gerotor pump comprising:
a housing;
a flange which closes the housing to define a compartment;
an inner rotor;
an outer rotor in driving engagement with the inner rotor, the inner rotor and the outer rotor being positioned within the compartment;
an electric drive positioned within the compartment and including an electric rotor fixed for rotation with the outer rotor, the outer rotor being arranged on a shaft that is supported for rotation within the compartment, a first end of the outer rotor being positioned against the flange, the gerotor pump including a suction region and a pressure region, wherein medium within the pressure region is at a higher pressure than medium within the suction region and the compartment;
a gap between the flange and the inner and outer rotors allowing medium in the pressure region to enter the compartment; and
a cavity in the shaft in fluid communication with the suction region and in fluid communication with the compartment.
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3. A gerotor pump comprising:
a housing;
a flange which closes the housing to define a compartment;
an inner rotor;
an outer rotor in driving engagement with the inner rotor, the inner rotor and the outer rotor being positioned within the compartment;
an electric drive positioned within the compartment and including an electric rotor fixed for rotation with the outer rotor, the outer rotor being arranged on a shaft that is supported for rotation within the compartment, a first end of the outer rotor being positioned against the flange, the gerotor pump including a suction region and a pressure region, wherein medium within the pressure region is at a higher pressure than medium within the suction region and the compartment;
a gap between the flange and the inner and outer rotors allowing medium in the pressure region to enter the compartment; and
a cavity in the shaft in fluid communication with the compartment and in fluid communication with an eccentric bearing of the gerotor pump.
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