Space heating appliances
AssigneeAmbi-Rad Limited
InventorRobert N. Eaves
Life of this patent
Estimating the term…
Abstract
A space heating appliance includes a radiant duct which, when heated, emits radiant heat for heating an area adjacent the duct. An insulated cowling shrouds the side of the duct away from the area to be heated in spaced relation to the duct. The cowling has a heat-emissive surface which when heated emits radiant heat toward the space to be heated. Between the duct and cowling in closely spaced proximity to the duct is an insulated heat shield which traps and redirects heat back to the duct in order to maintain the duct at a higher temperature and concentrate the emission of heat in the direction of the area to be heated.
Claims13
A radiant tube space heating appliance, comprising:
- a radiant duct capable of emitting radiant heat in response to being heated by hot gases directed through said duct for heating an area adjacent said duct;
- at least one shield member fabricated of thermally insulating material supported in closely spaced relation to said duct adjacent a side thereof opposite the area to be heated, said shield member partially surrounding said duct but extending no further than about half of the circumference of the duct for insulating the space between said shield member and said duct against heat loss and redirecting any heat emitted into said space back toward said tube;
- and
- a heat projection cowling member supported in spaced relation to each of said duct and said shield member, said cowling extending beyond said shield member and terminating at an end open to the area to be heated and lying in a plane generally common with a peripheral part of the duct furthest from said shield member such that said cowling substantially encloses said shield member and said duct, said cowling having an inner wall formed of rigid sheet material and an outer backing layer formed of thermally insulating material.
A radiant tube heating appliance, comprising:
- a radiant heat-emitting duct for heating an area adjacent said duct;
- a radiant heat-emissive cowling supported in spaced relation to said duct opposite the area to be heated, said cowling having a dark-colored, highly radiant heat-emissive surface open to the space to be heated and responsive to being heated by the heat of said duct to emit radiant heat back toward the area to be heated, said cowling having a thermally insulating layer backing said heat-emissive surface to limit the transfer of heat through said cowling;
- and
- at least one insulating heat shield supported between said a duct and said cowling in spaced relation to said heat-emissive surface and in closely-spaced proximity to said duct to insulate a zone between said duct and said heat shield against heat loss and redirect heat entering said zone back toward said duct to limit heat loss of said duct in the direction away from the area to be heated.
Dependencies are inferred from the claim text.