Abstract: An electric heater with insulating carrying parts and heating conductors carried by the carrying parts and with at least one tap for tapping a voltage reduced compared with the voltage at the heating conductor. The carrying parts have slots through which pass feet of a tap and through which the tap is fixed to with a carrying part, the length of the slots being greater than a width of the feet of the tap.

Abstract: An electrical heating element with a heat conductor in the form of meander-shaped windings, in which the individual windings are held in openings separated by solid parts in at least one insulating plate. For stabilization, especially with long, narrow designs of such a heating element, a retaining rail is provided, which extends over the entire width of insulaitng plates and essentially over their length and has tabs bent over along the side edges of insulating plates to grip the plates on both sides.

Abstract: In a method for the production of toaster heating elements firstly connecting strips made of electrically conductive material are arranged in the region of edge recesses at opposite edges at the rear side of a support plate, opposite to the heating side. Then a plurality of heating conductor wires are provided substantially parallel to one another and in such a way that they cross the connecting strips in the region of the edge recesses at the heating side and thereby are electrically connected to said strips. Furtheron the wires are cut off. In an apparatus for performing the method there is provided a processing station comprising a supporting surface for the support plate of the heating elements. The processing station further comprises housing grooves one for each connecting strips. Said grooves are situated at opposite side edge regions of the supporting surface. Further a delivery station associated with the processing station is provided.

Abstract: A form of electrical heating device, which is particularly applicable to hair driers but may also be useful in fan heaters or other electrical heaters for gaseous or other fluid media, comprises an insulating support plate around which a resistance heating wire is helically coiled with neighbouring turns of the coil offset to achieve improved heat exchange to the medium flowing over it and while allowing the device to be produced inexpensively and in a simple and trouble-free manner. The centers of the respective groups of turns which are similarly offset may lie on parallel lines or lines which converge along the length of the device. There may be two such groups or more, four for example. The turns are located in suitably dimensioned slots in the edges of the support plate; the wire may be bent into meander or sinuous form, in which case it can be made to grip the support plate in the region of the slots.

Abstract: An electric heating device for heating the interior of a cabinet containing electrical apparatus, such as a switch or distribution apparatus, to prevent sweating or condensation therein, includes at least one PTC electrical resistance heating and temperature self-regulating heating element situated in the interior of an elongated body made of thermally conductive material that is thermally connected to a radiator. The radiator is formed by a pair of flat base plates extending laterally from opposite sides of the body and radiator fins extending only from the base plates and only from one flat side thereof. The body is a massive hollow element having a wall thickness greater than that of the base plates and fins and a height greater than the thickness of the base plates. The body, base plates and fins are formed as a one piece extrusion. A permanent magnet may be used to secure the body to the interior surface of a steel cabinet.

Abstract: An electrical heating element for fluid media, more particularly for hot air appliances, comprising a support member of insulating material and at least two heating conductors which are made of resistance wire and which surround the support member, the heating conductors being wound as helical coils and supported on supporting edges of the support member, the coils being wound with radial spacing from one another. The heating conductors may comprise an outer coil consisting of a resistance wire of high specific power consumption and an inner coil consisting of a resistance wire of low specific power consumption. The support member may comprise a tubular body with ribs projecting radially at the periphery, said ribs forming the supporting edges. The outer ribs may be U-shaped extending from end to end of the tubular body and forming passages through which the turns of the inner coil pass. The ribs preferably comprise mica strips; various mounting means for such strips are described.

Abstract: An electrical resistance water heating device, particularly intended for use in coffee or other beverage preparation machines, includes a solid metal heating plate having planar upper and lower surfaces. A fluid throughflow duct is formed between the upper and lower surfaces and includes at least two elongated, spaced, side-by-side branches having corresponding ends interconnected by a connecting conduit to form a continuous fluid flow path from a water inlet to a water outlet. An elongated slot is formed between each pair of side-by-side branches and at least one plate-shaped planar PTC heating element is accomodated within each elongated slot with each of the opposing surfaces thereof directed toward a respective one of the pair of side-by-side branches between which the duct is formed. The spaces between the heating element and walls of the slot are filled with a hardenable electrically insulative filling of good heat conductivity.

Abstract: In an electrical resistance heating element (1) comprising a heating conductor support (3) of insulating material and a heating conductor (4) of resistance wire wound in meander or sinuously coiled manner with loop ends or bights (6) and loop legs or runs (8), the loops of the heating conductor (4) being arranged substantially in a single plane, and the inner loop ends (6) which are directed towards the heating conductor support (3) being situated in the edge region of the heating conductor support (3), it is proposed according to the invention to construct the heating conductor support (3) as a flat plate, the flat plate to be situated substantially in the same plane as the loops of the heating conductor (4). It is also proposed that the outer loop ends or bights (5) remote from the heating conductor support (3) are to be self-supporting and not secured.

Abstract: A combined water heating and vessel support plate for supporting the vessel of a beverage preparation device includes a heating slab having a water flow-through duct constituted by longitudinal apertures in a plurality of prismatic (preferably rectangular) heating-plate segments which are clamped together side-by-side with PTC ceramic electrical resistance heating elements interposed between them. The duct is completed by connecting the apertures externally by tubes or by duct-incorporating end caps on the heating plate to form a continuous flow path from an inlet to an outlet. Various clamping arrangements, preferably with some resilience, are described, as are the use of inter-segment filling materials and electrically insulating materials with good heat-conducting properties, also the selection and positioning of the heating elements to achieve a desired heating effect. The top surfaces of the segments are coplanar and form a flat vessel support surface for heating a vessel placed thereon.

Abstract: A heating element for a hair dryer, fan heater or other hot air appliance has heating-conductor support means comprising a length of tube in the interior of which an electronic control arrangement is placed. Where the said arrangement comprises a plate or circuit board this is arranged parallel to the longitudinal axis of the tube. A temperature sensor of the control arrangement is connected directly to the circuit board and projects out of the interior of the tube into the outflowing air flow, preferably from a prolongation of the circuit board which extends beyond the end of the tube. The heating conductor consist of two conductors designed for low power and high power consumption respectively.

Abstract: A heating element (for a hair dryer, fan heater or other electrical appliance) in which the turns of resistance heating wire are held in place, in edge recesses of support plate means, by a strip of heat-resistant cement applied to the supporting edges and over the turns of the wire. The cement is non-wetting with respect to the heating wire.

Abstract: A heating element for electrical appliances which include a meander-form winding of resistance heating wire, two or more supporting plates arranged parallel to an incident flow direction of air produced by the blower and having openings in which turns of the winding are located. Metallic spacer elements are provided for connecting the supporting plates with a voltage tap being provided on at least one of the turns of the winding. At least one of the spacer elements is provided with a prolongation which projects beyond one of the supporting plates and is deformable to constitute a sleeve engaging about a turn of the winding.

Abstract: A fan-heater appliance, e.g., hair drier, has a tapping arrangement for providing a variable supply to a fan motor to regulate the speed thereof. The tapping arrangement comprises a current collector which is slidable over a row of heads of tubular rivets which are attached to the coil tips of a linearly coiled resistance heating wire arranged transversely of the air flow path through the appliance. The current collector is operated by a crank arrangement including a knurled disc operator.

Abstract: A vaporizing and warming device for beverage-preparing machines, such as household coffee machines and the like of the type which include a hot plate for keeping the prepared beverage warm, a vaporizer tube carrying water for preparing the beverage and a heating element for transferring the heat required for the respective vaporization and warming processes. The heating element is thermally conductively connected with the vaporizer tube and is arranged together with the vaporizer tube at one side, preferably the underside of a horizontally extending hot plate. The heating element is arranged laterally offset with respect to the vaporizer tube and with its apex at a perpendicular distance from the hot plate which is smaller than the height of the vaporizer tube perpdendicularly to the hot plate, whereby conductive heat transfer from the heating element to the hot plate is avoided while still providing heat to the vaporizer tube, which vaporizer tube is in contact with the hot plate.