US 5,311,930 A · Heat reclamation device

Abstract

A device for reclaiming waste heat from cooking appliances. The device includes a baffle through which exhaust from the cooking appliance flows, an inlet for receiving exhaust from the cooking appliance, and an outlet for venting exhaust to the atmosphere outside the building or vehicle in which the cooking appliance is located. The baffle extracts heat from the exhaust as the exhaust flows therethrough. The baffle is in thermal communication with a heat sink that directs the extracted heat to the building or vehicle spaces to be heated. The heat reclamation device has a generally thin profile so that the device may be installed above and behind the work surface of the cooking appliance so as to consume a minimal amount of space while not interfering with the normal use of the appliance. The heat reclamation device has means to vent the exhaust directly to the atmosphere, bypassing the baffle.

Claims14

Dependent claims

A heat reclamation device for reclaiming waste heat from the exhaust outlet of an appliance to warm ambient air, comprising:

(a) enclosed baffle means, having a top, a bottom, a back wall, a device exhaust inlet disposed at the bottom for connection to an exhaust outlet of said appliance, and a device exhaust outlet disposed at the top, for guiding exhaust gas from said exhaust outlet of said appliance to said device exhaust outlet;
(b) guidance means, disposed within said baffle means and extending laterally with respect to said back wall, for guiding said exhaust gas over a circuitous path within said baffle means so as to increase the surface area within said baffle means in contact with said exhaust gas;
and
(c) fin means, disposed on said back wall outside said baffle means, extending laterally from said back wall and being in thermal communication with said exhaust gas within said baffle means, for transferring heat from said exhaust gas within said baffle means to said fin means and transferring said heat from said fin means to the surrounding air.

1 more element

Dependencies are inferred from the claim text.

Heat reclamation device

Life of this patent

Heat reclamation device

Life of this patent

Abstract

Claims14