Fluid sprayer having active cooling
AssigneeGraco Minnesota Inc.
InventorsSteven D. Becker, Adam K. Collins, Todd B. Hillukka, Jeffrey L. Schwieger
Life of this patent
Estimating the term…
Abstract
A fluid sprayer active cooling system is configured to actively cool heat generating components of a spray system. The cooling system includes a fan assembly that is actively controlled between activating and deactivated states to control flow of cooling fluid through a cooling circuit. The fan assembly is operated independently from the motor that powers pumping by a pump of the spray system.
Claims31
A fluid sprayer, the fluid sprayer comprising:
- a pump that outputs fluid under pressure;
- a spray gun that sprays fluid output from the pump;
- an electric motor having a rotor that rotates about a first axis;
- a drive that receives rotational motion output by the electric motor to operate the pump;
- a frame that supports the pump and the electric motor;
- and
- a fan assembly that generates a flow of cooling fluid that cools the motor, the fan assembly having a blade structure that rotates on a second axis, the second axis non-coaxial with the first axis.
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13-17. (canceled)
20-23. (canceled)
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34-64. (canceled)
A fluid sprayer, the fluid sprayer comprising:
- a pump that outputs fluid under pressure;
- a spray gun that sprays fluid output from the pump;
- an electric motor having a rotor that rotates about a first axis;
- a drive that receives rotational motion output by the electric motor to operate the pump;
- a frame that supports the pump and the electric motor;
- a fan assembly that generates a flow of cooling fluid that cools the motor, the fan assembly having a blade structure that rotates on a second axis;
- and
- a cooling circuit having a chamber within which the electric motor is at least partially disposed, a cooling inlet configured to provide cooling fluid from the fan assembly to the chamber, and a cooling outlet configured to output heated cooling fluid from the chamber.
66-78. (canceled)
A fluid sprayer, the fluid sprayer comprising:
- a pump that outputs fluid under pressure;
- a spray gun that sprays fluid output from the pump;
- an electric motor having a rotor that rotates about a first axis;
- a drive that receives rotational motion output by the electric motor to operate the pump;
- a frame that supports the pump and the electric motor;
- a chamber within which the electric motor is at least partially disposed;
- a fan assembly that generates a flow of cooling fluid that cools the motor and that is configured to blow the flow of cooling fluid into the chamber, the fan assembly having a blade structure that rotates on a second axis;
- and
- a heatsink forming at least one wall of the chamber, the heatsink exposed to the flow of cooling fluid generated by the fan assembly.
80-137. (canceled)
Dependencies are inferred from the claim text.