Abstract: A condensation heat exchanger including at least one helically-coiled tube, inside which a fluid to be heated can circulate, a deflector, and a shell mounted inside which the tube, the shell having a gas-discharge sleeve having a bottom and a facade for feeding and/or producing a hot gas, inside the shell. The shell comprises a tubular metallic shroud closed at its two ends by a facade and a bottom, wherein the bottom is made of composite plastic, the rear edge of the shroud has a plurality of fastening tongues, the bottom has, at its periphery, a plurality of fastening slots arranged along at least part of its circumference, each fastening slot bordered longitudinally by a first longitudinal rib projecting outwardly, and wherein each fastening tongue is inserted into a fastening slot and folded twice around the first rib.

Abstract: The present invention relates to a heat exchanger (1?), comprising: —a gas-tight casing (2), —at least one tube (4) made from a good thermally conducting material and inside which a fluid to be heated can circulate, this tube (4) being helically wound so as to form a helical winding (40) having a longitudinal axis (X-X?) which is arranged inside said casing (2), —means for conveying and/or for producing hot gases inside said casing (2), such as a burner (3), so as to define a combustion chamber (26) therein, this helical winding (40) being arranged so as to form a gap (45) between two adjacent turns, said at least one tube (4) having a front face (41) and a rear face (42) which are opposing, a bottom side (43) oriented towards the longitudinal axis (X-X?) and a top side (44) oriented towards the casing (2), said front face (41) and said rear face (42) of the tube (4) being planar or substantially planar and being located on either side of the gap (45).

Abstract: A flame-proof and explosion-proof surface combustion gas includes a burner body pierced with a series of orifices, each of which is extended by a rim, wherein the orifices are arranged in several rows of aligned orifices; and a gas distributor that includes a distributor body equipped with a plurality of longitudinal gas-distribution branches, each branch being pierced with a line of orifices bordered by a rim. The distributor body is positioned inside the burner body such that each orifice of the distributor body is coaxial with an orifice of the burner body, wherein when the burner body is coupled to an air supply source and the distributor body is coupled to a gas supply source, the air and the gas mix only at the rims of the burner body.

Abstract: The heat exchanger has a helically bound bundle (2) of tubes fixedly mounted inside a casing fitted with a pipe for evacuating gases generated by a burner (6). The casing (1) is made of a heat-resistant plastic material.

Abstract: The present invention relates to a heat exchanger (1?), comprising: —a gas-tight casing (2), —at least one tube (4) made from a good thermally conducting material and inside which a fluid to be heated can circulate, this tube (4) being helically wound so as to form a helical winding (40) having a longitudinal axis (X-X?) which is arranged inside said casing (2), —means for conveying and/or for producing hot gases inside said casing (2), such as a burner (3), so as to define a combustion chamber (26) therein, this helical winding (40) being arranged so as to form a gap (45) between two adjacent turns, said at least one tube (4) having a front face (41) and a rear face (42) which are opposing, a bottom side (43) oriented towards the longitudinal axis (X-X?) and a top side (44) oriented towards the casing (2), said front face (41) and said rear face (42) of the tube (4) being planar or substantially planar and being located on either side of the gap (45).

Abstract: A condensation heat exchanger including at least one helically-coiled tube, inside which a fluid to be heated can circulate, a deflector, and a shell mounted inside which the tube, the shell having a gas-discharge sleeve having a bottom and a facade for feeding and/or producing a hot gas, inside the shell. The shell comprises a tubular metallic shroud closed at its two ends by a facade and a bottom, wherein the bottom is made of composite plastic, the rear edge of the shroud has a plurality of fastening tongues, the bottom has, at its periphery, a plurality of fastening slots arranged along at least part of its circumference, each fastening slot bordered longitudinally by a first longitudinal rib projecting outwardly, and wherein each fastening tongue is inserted into a fastening slot and folded twice around the first rib.

Abstract: The invention relates to a condensation heat exchanger which comprises: —at least two concentric bundles (5, 5?) of tubes made from a material that is a good thermal conductor, inside which tubes a heat-transfer fluid is intended to circulate, each bundle of tubes (5, 5?) comprising a series of tubes (50, 50?) in the form of an arc of a circle, the tubes of each bundle (5, 5?) being arranged in parallel planes with a gap (53, 53?) between two adjacent tubes (50, 50?), —a single collector (6) made of a material that is a good conductor of heat and to which the two ends (51, 51?, 52, 52?) of each tube (50, 50?) of the various bundles (5, 5?) are connected, this collector (6) being equipped with inlet (61) and outlet (62) couplings. This exchanger is notable in that the collector (6) comprises several partitions delimiting various channels, which allow the fluid that is to be warmed up to be made to circulate in the various successive bundles from the outermost bundle to the innermost bundle.

Abstract: A deflector for a condensation heat exchanger and to an exchanger provided with such a deflector. The deflector includes two front and rear cups with inner surfaces at the bottom designed in relief so as to have at least one circulation groove. The two cups are assembled on either side of a central partition so that each groove forms, with the partition, a channel in which a heat-transfer fluid is intended to circulate. The channels of the front and rear cups are connected via an opening bored into the central partition, so that the heat transfer fluid can circulate from an inlet coupling to an outlet coupling of the deflector, through the channels by flowing on either side of the central partition.

Abstract: The invention relates to a deflector for a condensation heat exchanger and to an exchanger provided with such a deflector. Said deflector (2) is characterised in that it includes two front (3) and rear (4) cups of which the inner surface (311, 411) of the bottom is designed in relief so as to have at least one circulation groove (34, 44), the two cups being assembled on either side of a central partition (5) so that each groove forms, with said partition, a channel in which a heat-transfer fluid is intended to circulate, the channels of the front and rear cups being connected via an opening (50) bored into said central partition (5), so that said heat-transfer fluid can circulate from an inlet coupling (40) to an outlet coupling (30) of the deflector, through said channels by flowing on either side of said central partition.

Abstract: The invention concerns a surface-combustion gas burner comprising a combustion grate consisting of a metal sheet pierced with a series of slots. This burner is remarkable in that said metal sheet comprises a series of deflectors made in one piece with said metal sheet and protruding on the outer face of same, each deflector extending longitudinally and laterally above the entire surface of a slot, and in that each deflector comprises a guide portion for guiding the gas flow and a junction portion joining to the metal sheet, said guide portion being spaced from the metal sheet in such a way as to provide therewith at least one lateral gas ejection port, said deflectors being disposed in pairs in such a way that the lateral gas ejection ports of same face each other.

Abstract: The invention concerns a surface-combustion gas burner comprising a combustion grate consisting of a metal sheet pierced with a series of slots. This burner is remarkable in that said metal sheet comprises a series of deflectors made in one piece with said metal sheet and protruding on the outer face of same, each deflector extending longitudinally and laterally above the entire surface of a slot, and in that each deflector comprises a guide portion for guiding the gas flow and a junction portion joining to the metal sheet, said guide portion being spaced from the metal sheet in such a way as to provide therewith at least one lateral gas ejection port, said deflectors being disposed in pairs in such a way that the lateral gas ejection ports of same face each other.