Device for improving combustion in a fireplace
AssigneeInstitut Polytechnique De Grenoble
InventorsJean-Francois Boujut, Thierry Henocque, David Lepiney
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Abstract
The invention relates to a device approximately defining an L shape and comprising at least two first nested pipes in the foot of the L (32), and at least one second pipe (36) provided with at least one opening (38), in the leg of the L, the first pipes being arranged in such a way as to define a duct between one end (34) of a first central pipe and said at least one opening (38) by means of passages defined at the ends of the first pipes.
Claims16
A device capable of being inserted into the hearth of a fireplace, comprising:
- a first approximately horizontal portion playing the role of firedogs comprising at least two first nested pipes, and
- a second portion comprising at least one approximately vertical second pipe connected to the outermost of the first pipes and provided with at least one opening capable of emerging in operation into an upper portion of the hearth,
- the first pipes and the second pipe being arranged to define an air duct snaking between an end of a first central pipe and said at least one opening via passages defined at the ends of the first pipes,
- wherein the first pipes define a plurality of duct stages, said duct stages having a cross-section which increases along with their distance to the center of the first pipes.
An assembly of at least two devices capable of being inserted into the hearth of a fireplace, each of the at least two devices comprising:
- a first approximately horizontal portion playing the role of firedogs comprising at least two first nested pipes, and a second portion comprising at least one approximately vertical second pipe connected to the outermost of the first pipes and provided with at least one opening capable of emerging in operation into an upper portion of the hearth, wherein the first pipes and the second pipe are arranged to define an air duct snaking between and end of a first central pipe and said at least one opening via passages defined at the ends of the first pipes so that each said device defines independent ones of the air ducts, said devices being held in position by means of an armature comprising four lateral walls, wherein the first pipes define a plurality of duct stages, said duct stages having a cross-section which increases along with their distance to the center of the first pipes.
Dependencies are inferred from the claim text.