Cooling for an electrically operated displacement pump
AssigneeGraco Minnesota Inc.
InventorsBradley H. Hines, Pual W. Scheieri, Brian W. Koehn, Jacob D. Higgins, Benjamin J. Paar, David L. Fehr
Life of this patent
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Abstract
An electrically operated displacement pump includes an electric motor having a stator and a rotor. The rotor is connected to the fluid displacer to power pumping by the fluid displacer. A cooling circuit extends at least partially about an exterior of a motor housing that houses the electric motor. A fan assembly blows cooling air through the cooling circuit.
Claims30
A displacement pump for pumping a fluid, the displacement pump comprising:
- an electric motor including a stator and a rotor;
- a fluid displacer configured to pump fluid and connected to the rotor to be driven by the rotor;
- a cooling circuit including a flowpath about an exterior of a motor housing that houses the electric motor;
- and
- a fan assembly configured to blow air through the cooling circuit.
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A displacement pump for pumping a fluid, the displacement pump comprising:
- an electric motor at least partially disposed in a motor housing and including a stator and a rotor;
- a first fluid displacer connected to the rotor such that a rotational output from the rotor provides a driving input to the first fluid displacer;
- and
- a cooling circuit extending about an exterior of the motor housing that houses the electric motor.
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A displacement pump for pumping a fluid, the displacement pump comprising:
- an electric motor at least partially disposed in a motor housing and including a stator and a rotor;
- a controller operatively connected to the electric motor, the controller disposed in a control housing extending from the motor housing;
- a first fluid displacer connected to the rotor such that a rotational output from the rotor provides a driving input to the first fluid displacer to cause pumping by the first fluid displacer;
- and
- a cooling circuit having a flowpath extending between the motor housing and the control housing.
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Dependencies are inferred from the claim text.