Portable heater

摘要

A heater is provided with a heater core having a source of thermal energy in a heat exchange relationship with a heat exchanger. A fan moves air through the heater core from an air inlet to an air outlet. The heater core is thermally insulated by an air jacket from an exterior case.

主权项

1. A heater, comprising:
an exterior case comprising an air inlet and an air outlet; a heater core within the exterior case and being in communication with the air inlet and the air outlet; a fan communicating with the air inlet and the air outlet for moving air through the heater core; said heater core comprising a source of thermal energy and a heat exchanger, the heat exchanger comprising an inner duct and an outer duct, the inner duct being disposed adjacent and surrounding the source of thermal energy and the outer duct surrounding the inner duct to define an intermediate chamber between the inner and outer ducts; said inner and outer ducts of said heat exchanger each oriented along a longitudinal axis extending between walls of said exterior case wherein said air inlet and air outlet are disposed, and wherein the heat exchanger is removably coupled to the heater to permit removal of the heat exchanger as a modular unit that comprises all of the outer duct, inner duct, intermediate chamber and the source of thermal energy.