Chaffoteaux Et Maury

Joseph Le Mer

Bernard Martel

Jean-Luc Derrien

The connection strip is for use with a dual-purpose hot water and central heating boiler. The strip comprises four modules made of molded hard plastic and assembled side-by-side by being mutually juxtaposed with tie bars passing through them, the modules being respectively associated with outgoing heating water, outgoing domestic hot water, incoming cold water, and returned heating water, each module including the corresponding stopcocks and ducts together with lengths of a short-circuit duct enabling the modules to co-operate to form a short-circuit on the heating circuit, suitable for feeding water to said heating circuits and for enabling leak tests to be performed when the boiler is not present.

Dual-purpose central heating boilers

To connect two pipes together, a female end-piece (1) is fitted thereon comprising an annular seal housed in an annular cup (2) and a pin (6) guided in transverse slides (9) and, respectively, a male end-piece ending in a collar and adapted to crush the seal axially. The pin comprises two arms (8) whose end sections (8.sub.2) allow the collar to pass axially and whose base sections (8.sub.1) on the contrary serve for clamping the collar axially against the seal, these base sections ending in ramps (R) facilitating the beginning of cooperation between the arms and collar. Hooks (12) limit the outgoing travel of the pin.

Pipe couplings

A double pipe is disclosed for mixed boilers comprising rectilinear segments in which the two duct sections are juxtaposed laterally. Each section (A,B) is defined, on its side the furthest away from the other section, by a plate (1,7) whose two longitudinal borders (2,3,8,9) are curved and are welded against the longitudinal borders of an intermediate partition (4) and this intermediate partition has stamped bosses (5) whose tops (6) are in contact with said plates and are fixed thereto.

Double pipes for mixed boilers, to the methods of manufacturing such

A device is divulged for controlling and regulating the gas supply to the burner of a boiler or similar, which device comprises a piloted regulator (R) with a leak valve (8) for the gas flow. The burner is also fed with pressurized air and opening of the leak valve is slaved to the flow of this pressurized air so that the ratio between the two air and gas flows permanently has a value providing excellent combustion of the air-gas mixture in the burner.

Devices for controlling and regulating the gas supply to the burner of a

The invention concerns a single or double circuit hot water production applicance comprising, for the water, one or two nests of parallel vertical coaxial tubes (1) connecting together two rings (2,3) which are also coaxial and, for the combustive air admitted, an external jacket (7) with double wall and, finally, for the combustion gases, an annular intermediate sleeve (9) and a central discharge chimney (10, 11). The burner (14) fed with pressurized fuel gas (at 16) is disposed annularly between the upper ring (3) and the top of the chimney (11) and it is adapted so as to generate downwardly oriented flames. An inclined bottom (29) collects the condensates.

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St Thegonnec, France

Joseph Le Mer