Browse Prior Art Database

Efficient Area Heater

IP.com Disclosure Number: IPCOM000116133D
Original Publication Date: 1995-Aug-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Derdall, BC: AUTHOR [+2]

Abstract

Thin, silicone rubber heaters (3) are bonded to an aluminum plate (4). The aluminum plate has channels (6,9) on the bottom side forming air passages between the rubber and aluminum. An outer case (1) made of laminate that encloses the back of the heater supports a thin stainless steel sheet (2) between the heaters and the back cover. Air is forced into the outer chamber which is used as a manifold where it is dispersed evenly as it passes through holes (7) in the steel. Some preheating of the air occurs as it cools the outer casing. The holes in the steel plate are strategically placed to direct the incoming air over what would be the hottest area to help even the temperature over the whole area. The stainless sheet also reflects radiant heat back to the heaters.

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Efficient Area Heater

      Thin, silicone rubber heaters (3) are bonded to an aluminum
plate (4).  The aluminum plate has channels (6,9) on the bottom side
forming air passages between the rubber and aluminum.  An outer case
(1) made of laminate that encloses the back of the heater supports a
thin stainless steel sheet (2) between the heaters and the back
cover.  Air is forced into the outer chamber which is used as a
manifold where it is dispersed evenly as it passes through holes (7)
in the steel.  Some preheating of the air occurs as it cools the
outer casing.  The holes in the steel plate are strategically placed
to direct the incoming air over what would be the hottest area to
help even the temperature over the whole area.  The stainless sheet
also reflects radiant heat back to the heaters.  The air picks up
additional heat from the backside of the rubber heaters then enters
the ducts via the space (8) between the rubber heaters, into the air
channels (9) in the aluminum plate.  Small slots (6) crossing through
the large ducts and the grid of through holes (5) provide the air
feed to holes.  The small ducts are proportioned such that they
create a back pressure in the chamber.  This ensures even
distribution of air throughout the entire surface of the aluminum
plate.  The air moving through the plate acts as a transfer media to
heat the assembly placed on the surface of the heater unit.  The
matrix of holes in the plate can also be used for fixturing. ...