David C Heath

US Patent:

6662866, Dec 16, 2003

Filed:

May 22, 2001

Appl. No.:

09/806843

Inventors:

David A. Heath - Winter Springs FL

Assignee:

Encon International, Inc. - Lake Mary FL

International Classification:

F23N 520

US Classification:

165267, 236 46 R

Abstract:

An energy conservation moderating system has a DPDT switch ( ) in switching communication intermediate a micro controller ( ) and a temperature-difference generator ( ). The micro controller is in switching control of the temperature-difference generator programmably through the DPDT switch in option to switching control of the temperature-difference generator by a conventional thermostat ( ). The micro controller is preferably a Z 8 micro controller having a memory into which an application-specific program in the microcontroller is loaded for programmably plural-cycle short-time on-and-off switching for savings run times intermediate temperature-band on-call extremes and temperature-band mediums of a temperature-band fluctuation selectively. A timing controller ( ) of on-and-off switching by the micro controller overrides switching control by the conventional thermostat with short-time cycling of on-and-off switching and returns switching control to the conventional thermostat automatically by delay of timing of on-switching to proximate on-switching timing by the conventional thermostat. This is a failsafe control circuitry ( ) in event of failure of or intentional overriding of the energy conservation moderating system.