Patent ID: 8561254

Claim:
A fluid extraction system, comprising: a fluid extractor having an inlet positioned to receive pressurized cleaning fluid, and an outlet positioned to deliver extracted waste fluid; a fluid supply tank coupled to the extractor to provide the cleaning fluid; a waste fluid tank coupled to the extractor to receive the extracted waste fluid; a blower having an air intake and an air outlet through which blower air passes, the blower being operatively coupled to the extractor outlet to draw the extracted waste fluid from the extractor; and a heat exchanger positioned at least partially within the fluid supply tank, the heat exchanger having a first flow path coupled to the fluid supply tank to receive cleaning fluid, the heat exchanger further having a second flow path coupled to the blower air outlet to receive blower air, the first and second flow paths being in thermal communication with each other, the heat exchanger being in thermal communication with an interior region of the fluid supply tank.