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Heat Accumulators

Off-peak-electric-heat-storage-and-discharge-device

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Off peak electric heat storage and discharge device

Details

Inventors: Lentz, Ervin Carl;
Assignee:
Primary Examiner: Jeffery; John A.
Assistant Examiner:
Attorney, Agent or Firm: Kamrath; Alan Oppenheimer, Wolff & Donnelly LLP

An off-peak electric heat storage and discharge device includes variably sized thermal media material contained in a rock box. A calrod-type heating element is located in and in direct thermal contact with the thermal media material. Air flow can move from a fan upwardly through a duct, through slots formed in the duct into the rock box, and through the thermal media material. Air flow can also move from the fan through a bypass duct. Heated air and cold air can be mixed in proper proportions by a rotatable damper movable between a position closing off all cold, bypass air and a position closing off all heated air. The damper falling to shut off the flow of heated air in the event of an actuator failure. All electric controls and the fan are contained in a vertical control chamber designed to convectively convey heat during static conditions. The thermostat for the device is located at the lowest point possible in the vertical control chamber and below a point which could be affected by convective air flow.

DETAILED DESCRIPTION The invention relates to an off peak electric heat storage device of a size and capacity suitable for plugging into a conventional wall outlet in a residence or other structure.
Said device is a preassembled unit, with a self contained adjustable thermostat, that requires no field assembly or installation work other than plugging it into a wall outlet.
It has a short chain to hold it to the wall.
The heating element is permanently embedded in and in direct contact with the thermal (heat storage) media, and the whole contained in a preassembled heavy gauge steel box, which may be made from low cost temperature resistant materials, such as Aluminized steel, or other medium temperature range materials.
Said box is surrounded with suitable supporting insulation and contained in a painted or vinyl clad galvanized steel outer cover.
A discharge fan, adjustable thermostat, other controls, and utility operated radio switch are contained within a vertical chamber located on the right side of the device.
A thermostatically controlled fail safe damper regulates outlet air temperature to a preset level.

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