Abstract: An electric domestic oven includes an air exhaust channel above the exit from a catalytic reactor. A depression baffle is located in the air exhaust channel to provide a suction orifice in the area of the catalyser unit to draw cooling and cleaning gases from the cooking compartment. The depression baffle has a curved upstream portion and a ramp-shaped downstream portion. A deflector may be placed above the baffle in the channel.

Abstract: A thermal sensor, in particular for a chemical reactor comprises an enamelled cylindrical shell having at its inner end a thin base and an inner sleeve welded to the base of the shell. A temperature measuring head comprising at least one thermal sensing element in a compression resistant insulating mass of low thermal inertia in a casing is pressed against the base of the shell by a compression spring acting between the temperature measuring head and a connector coupled to the inner sleeve of the shell by a bayonet point. Lead wires from the temperature measuring head extend out through a tubular stem having at its inner end a socket connected with the connector by a second bayonet joint. A guide sleeve has an inner end surrounding the inner sleeve of the shell and a reduced diameter outer end receiving the tubular stem. The bayonet joints provide for easy removal and replacement of the temperature measuring head.

Abstract: The oven includes a muffle 1 in which are mounted at least one upper heating element 11b, 11b, at least one lower heating element 14, an air circulating fan 4 provided in the rear wall 3 of the muffle 1, a heating element 6 placed in the current of air produced by the fan 4, a device 8 for ducting the air in such manner that the air blown by the fan is directed in roughly horizontal streams in the chamber defined by the muffle 1, and an electric switching device. The latter selectively connects the heating elements and the fan to a power supply. This switching device has a given position in which it is capable of connecting the heating element 6 associated with the fan in series with the upper heating element or elements 11a, 11b while connecting the fan 4 and the lower heating element 14 to the supply.

Abstract: In this process comprising fluidizing the enamel powder in a fluidization vessel by blowing air in the bottom of the latter, steam is also introduced in the vessel in the course of the fluidization. The relative humidity is adjusted in the vessel to a value between about 15 and 45% in respect of a temperature in the vessel of between about 20.degree. and 30.degree. C. A steam boiler (12) is connected to the fluidization vessel (1) for this purpose.

Abstract: Centrifugal filter press with axial feed moves the material outwardly to at least one annular peripheral filter, via a plurality of oppositely opening conical surfaces. The net axial thrust in one direction is thus reduced, at the same time that the filter can be positioned desirably far from the bearings and the liquid outlet can have a venturi effect that educts what could otherwise be harmful fumes from the vicinity of the bearings.