Method of making a condensing heat exchanger by direct extrusion coating of a film
AssigneeCarrier Corporation
InventorJames William Otter
Life of this patent
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Abstract
A thermoplastic polymer film is directly extruded onto the heated surface of a metal condensing heat exchanger. Any thermoplastic polymer capable of being adhered to the metal surface of the condensing heat exchanger can be utilized. Preferably, the thermoplastic polymer is a polyester, a polyolefin with an added maleate or tackifier to ensure adhesion, polyetherimide, polyethersulfone, polysufone or polyimide. The thermoplastic film must be resistant to the conditions of the condensing heat exchanger, such as the high temperature flue vent gases and the acidic condensate formed from condensation.
Claims14
A method for making a heat transfer component comprising the steps of:
- applying a melted polymer to a surface of said heat transfer component to form a film;
- applying pressure to said film to adhere said film to said surface of said heat transfer component;
- and
- utilizing said heat transfer component to exchange heat between a first fluid and a second fluid.
Dependencies are inferred from the claim text.