Extraction cleaner with heat transfer

摘要

An extraction cleaner for cleaning a floor surface includes a liquid distribution system and a liquid recovery system. The liquid recovery system includes a motor, and a motor cooling air pathway provides cooling air to the motor and removes heated cooling air from the motor. A duct system delivers heated motor cooling air to a supply tank of the extraction cleaner to heat liquid contained therein, and also drains liquid from the supply tank away from the motor.

主权项

1. An extraction cleaner for cleaning a floor surface, comprising:
a supply tank configured to store a supply of cleaning liquid; a liquid distribution system configured to apply the cleaning liquid to the floor surface; a liquid recovery system configured to recover applied liquid and dirt from the floor surface, the liquid recovery system comprising:
a recovery tank configured to store recovered cleaning liquid and dirt;a suction nozzle in fluid communication with the recovery tank; anda motor generating working air flow; a motor-cooling air pathway providing cooling air to the motor and removing heated cooling air from the motor; and a duct system fluidly downstream of the motor and comprising:
a heat transfer duct fluidly coupled to the motor-cooling air pathway and delivering heated motor cooling air from the motor to the supply tank to heat the cleaning liquid stored therein; anda drain outlet fluidly coupled to the heat transfer duct, wherein the drain outlet drains cleaning liquid that enters the heat transfer duct away from the motor.