Patent Number: 6,296,480

Title: Circulating oil heater

Abstract: A fluid heater has concentrically disposed radiantly heated and convectionally heated sections. The radiantly heated section includes a helically coiled tube defining a cylindrical chamber in which a flame produced by a burner primarily radiantly heats the coiled tube. The helically coiled tube has an outer perimeter about which a plurality of finned tubes are concentrically disposed and are heated by convection transfer of thermal energy. The oil heater embodying the present invention provides a compact oil heater that has greatly increased heating efficiency, reduced heat loss through the shell of the heater, and reduced internal stresses.

Inventors: Anderson; Kent L. (Vernal, UT), Ensminger; Jeffrey D. (Vernal, UT)

Assignee: Advanced Fabrication Technology, LLC.

International Classification: F24H 1/43 (20060101); F24H 8/00 (20060101); F24H 1/44 (20060101); F24H 1/22 (20060101); F24H 004/02 ()

Expiration Date: 10/02/2018