Abstract: A pressure washer is provided in which the low-pressure water supplied to the unit is routed through thermally conductive channels in the housing to absorb heat generated by the motor and electronics before being pressurized for cleaning. The channels are arranged in a serpentine configuration around the motor, with optional cavities in the end caps to increase heat transfer surface area and improve cooling efficiency. Heat from the motor is transferred to the housing and into the water, while heat from the electronics is conducted to the second end cap and into the same water flow. The heated water is then delivered to the pump, where it is pressurized for discharge through the outlet. This design enables efficient cooling of the motor and electronics using the pressurized water, eliminating the need for a separate cooling system.

Abstract: A pressure washer is provided in which the low-pressure water supplied to the unit is routed through thermally conductive channels in the housing to absorb heat generated by the motor and electronics before being pressurized for cleaning. The channels are arranged in a serpentine configuration around the motor, with optional cavities in the end caps to increase heat transfer surface area and improve cooling efficiency. Heat from the motor is transferred to the housing and into the water, while heat from the electronics is conducted to the second end cap and into the same water flow. The heated water is then delivered to the pump, where it is pressurized for discharge through the outlet. This design enables efficient cooling of the motor and electronics using the pressurized water, eliminating the need for a separate cooling system.

Abstract: A rod assembly and a support device includes a first rod member, a second rod member, and a threaded connector, where the first rod member is provided with a mounting groove; the second rod member is provided with a mounting seat detachably connected to the mounting groove; and the threaded connector is connected to the mounting seat in a threaded manner, and rotatable relative to the mounting seat, allowing the threaded connector to be clamped to the first rod member and the mounting seat, and to push the mounting seat such that an outer surface of the mounting seat is abutted against a wall of the mounting groove. The threaded connector of the rod assembly increases a friction force and restricts the second rod member from rotating relative to the first rod member when the second rod member is disturbed by an external force.