Abstract: A shaped thermal insulation body comprises molded and/or sintered thermal insulation material and contains fumed silica, inorganic fillers, opacifiers and fibers. The BET surface of the thermal insulation material is below 100 m2/g, e.g. between 10 and 100 m2/g, so that the shaped thermal insulation body absorbs less water. In the case of radiant heaters, the shaped thermal insulation body can be used as a base for heating resistors.

Abstract: A heat insulating molded body made of inorganic material and inorganic reinforcement fibers is disclosed, as well as a process for producing the same and its use. The molded body is characterized by the following composition: (a) 30-70 wt. % blown vermiculite; (b) 15-40 wt. % inorganic binder; (c) 0-20 wt. % infrared opacifier; (d) 15-50 wt. % microporous material; (e) 0.5-8 wt. % reinforcement fibers which contain maximum 2 wt. % B2O3 and at most 2% alkalimetal oxide, based on the weight of the reinforcing fibers.

Abstract: A radiant cooking unit comprises a heat insulating material forming a heating element carrier to which electrical heating elements are secured. It is surrounded by a ring-shaped bordering element of a heat insulating material relatively rigid in design. Both moldings are molded together by a ram. In another aspect the outer ring is divided into several ring sectors. A hoop of flat material clasps this ring-shaped bordering element on all sides, the latter being configured as a single-turn induction coil for a pot sensing system and simultaneously clamping the unit together.

Abstract: A heating unit (1) for a cooking point has an outer heater (3) and an inner heater (4) located concentrically for separately heating an associated surface area (13, 14) of the overall heating surface (2). The two heaters (3, 4) can be differently regulated such that supplied power is periodically switched over and distributed in very short, but variable time intervals in a continuously alternating manner to the two heaters (3, 4). Switching over takes place in the passage of the alternating current characteristic through the zero line. Thus, without influencing a clicking rate, there can be a random power distribution on at least two surface areas (13, 14) of the same heating surface (2) and a high efficiency with a relatively simple control (10).

Abstract: An apparatus (1) for compensating the maladjustment of a power control means (2) by changes to the ambient temperature operates at least on a partial path against the flat spring (31) of a correcting device (30), after which at least part of the ambient temperature sensor (20) of the apparatus (1) is fixed against further deflection by a stop (34), so that the actual values of the power setting correspond to the set desired values substantially independently of the ambient temperature. For the correction spring (31) or for the stop (34) it is not necessary to provide a separate component, if use is made for the same of the already present twisting preventer (28) or a carrier (18).

Abstract: The rim of an electric radiant heater is formed by a multilayer body (13). It can have the cross-sectional shape of a U, whose interior is filled with a good insulating material. In the interior (23) is placed a sensor coil (23) for a pot detection system, where it is well shielded against heat and mechanical influences.

Abstract: For an electric hotplate is provided an assembly arrangement using a bearing ring, which forms a continuous, one-piece, smooth-surface top extending from the outermost circumferential area of the hotplate body located close to the cooking surface to its outer circumference or to the mounting plate and has a relatively shallow collecting depression for liquid which has flowed over between an inner and an outer ring profile. With the hotplate or bearing ring can be associated at least one shield and at least one locking and/or centering device for position fixing purposes, so that there is a simple and positionally accurate assembly. The bearing ring can also be stop-limited towards the bottom against deformation.

Abstract: An electric hotplate has leads projecting from the underside and whose ends form connecting pins and provided with plugging pieces in the form of flat plugging tongues, connected by plugging connections to matching plugs of apparatus lines. On the plugging pieces is mounted an insulator which, like the plugging pieces, forms a preassembled unit and can be transferred from a stacking position into a connection position. The matching plug can be formed by a socket with stops acting in and counter to the plugging direction and whereof one is constructed so that it automatically snaps in.

Abstract: In an electric switching device (1), particularly constructed as a temperature regulator, the resilient switching arm (14) controlled by a hydraulic expansion cell (12) for operating a snap switch (5) is fixed by means of positively engaging snap connections (32) to plate-like support parts (20) of a sheet metal support body (3) of a body (2), the support parts (20) on either side of the switching arm (14) being at right angles to joint axis (25) of arm (14) as lateral bends to a base plate (30) of support body (3) and receive between them an end portion of an insulator (4) carrying the switch (5). This leads to an extremely favourable taking up of forces, so that the support body (3) can be made from extremely thin sheet metal as a relatively elastic component. It also leads to a very simple assembly of the switching arm (14).

Abstract: For an electric hotplate (2) is provided an assembly arrangement (1) using a bearing ring (10), which forms a continuous, one-piece, smooth-surface top extending from the outermost circumferential area of the hotplate body (23) located close to the cooking surface (24) to its outer circumference or to the mounting plate (3) and has a relatively shallow collecting depression (13) for liquid which has flowed over between an inner and an outer ring profile (11, 12). With the hotplate or bearing ring can be associated at least one shield and at least one locking and/or centering device for position fixing purposes, so that there is a simple and positionally accurate assembly. The bearing ring (10) can also be stop-limited towards the bottom against deformation.

Abstract: An electric hotplate has a hot plate body and plugging pieces for connection to connecting members of supply lines. A stacking aid is provided for receiving a plurality of hotplates in a multilayer stack, the stacking aid having pallet plates providing receptacles for receiving the plugging pieces of each single hotplate laterally outside of each single hotplate.

Abstract: An electric cooking appliance has a sheet steel, glass, ceramic or glass ceramic carrier plate (15), to whose underside are applied for electrical heating purposes thick film resistors (16). It can be constructed as a large-area plate with several cooking points, or as an individual hotplate, which is received in a mounting rim (26). Temperature limitation and regulation sensors (22) are applied in the form of film resistance sensors to the underside of the carrier plate.

Abstract: For the transportation-storage and assembly stacking of electric hotplates (2), a stacking air has pallet plates (10) to be arranged in superimposed manner in stacking layers and which can be directly stacked in one another for storage and which are in the form of deep drawn plastic plate parts with grid-distributed flat shells (19), which in each case projecting beyond the open side with the cooking surface (4) receive in centering manner the lower part of an electric hotplate (2) and are supported with respect to the cooking surfaces of the adjacent stacking layer by means of a slide preventing means (31), but are otherwise contact-free. Thus, on a support pallet and protected by a packing sleeve it is possible to stack a very large number of hotplates (2) in a stable manner, with the same orientation and therefore having good assembly access.

Abstract: In an electric hotplate (1), the hotplate body (4) has a throughbore (28) located in its central axis (10) and traversing a central stud (7) and the top surface and in which can be arranged in countersunk manner the head (26) of a fastening bolt (25) projecting over the underside of central stud (7). On the underside of the hotplate (1) is provided for the electrical connection thereof a connecting piece (16) of an electrical snap closure coupling (20), so that hotplate (1) in simple manner and with limited tool expenditure permits a rapid assembly from the top of a mounting plate (2) and, if necessary, can also be rapidly replaced.

Abstract: In a cooker plate (1) connection of the particular electric hotplate (3) a window opening (19) is provided as an assembly opening in a holding part (5) substantially completely covering the same on the underside, through which can be passed a connecting piece (21) for the electrically conducting connection to the connecting members (15) of hotplate (3). This window opening (19) can be substantially completely closed with a closure (20), the latter being constructed in one piece with a ceramic insulator (22) of connecting piece (21) or can be formed by a separate component made from sheet metal or the like. This leads to a very reliable and effective closure of the cooker plate (1), also on the underside thereof.

Abstract: In an electric heating unit (1), at least one heating circuit of a heating resistor (2) is arranged as a coated or printed conductor track and is consequently arranged by means of an adhesive joint (16) on a support (3) made from a high temperature-resistant synthetic paper. The unit is fixed, on its bare side remote from the heating resistor and by means of a whole-surface adhesive joint (13), directly to the associated reception side (11) of the body (10) to be heated. The adhesive joint (13) is appropriately formed by an adhesive layer (14) of silicone resin adhesive or the like, or a self-adhesive layer with a thickness of a few tenths of a millimeter and which permanently in stress-compensating manner has roughly the same thermal stability as the support (3). At least one heating circuit can be switched by means of a mechanical temperature switch with high switching hysteresis.

Abstract: In a temperature limiter (1) with a rod-like temperature sensor (6), the outer tube is formed by a continuously tensile-stressed insulating tube (7) extending into a base (2). An inner rod (8), optionally articulated two or more times in the longitudinal direction, is constructed as a continuously pressure-loaded rod, characterized by temperature-dependent length expansion. The temperature limiter (1), e.g., for a glass ceramic unit, may have a circuit breaker (5) closer to the temperature sensor, and a more-remote signal switch (4). In that case, for operating the remote signal switch, a flat bar-like transfer member (9) traverses both switches through openings (54). The transfer member is coupled at the associated end and in adjustable manner with an operating member (30) for the signal switch (4), receiving the adjustment member (34). The parts are constantly held together in clearance-free manner by the tension of a restoring spring (40).

Abstract: For the in particular fully automated electrical connection of electric hotplates (2) to connecting lines (15) a connecting piece with an insulator (18) is provided, which is provided outside two remote end faces (25, 26) with pin-like connecting parts (20, 21) at right angles to its main longitudinal direction, in such a way that they are located in crossing manner to the incoming connecting parts (16, 17) to be connected thereto and are reliably connected thereto at the junctions (22, 23) by spot welding. On the end faces (25, 26) are also provided centering recesses (32) or guiding and orienting faces (35, 36) for the incoming connecting parts (16, 17), so that a self-orienting effect is obtained on assembly.

Abstract: In an electric hotplate (1b), the connecting portions (19b) for the connection of appliance lines (34) provided on the underside thereof can be transferred about articulations, namely bendable or pivotable joints or hinges, e.g. in the form of springs (71) into a transportation and fitting position, in which they are completely countersunk in the underside of the hotplate and also do not project over the outer circumference thereof. The connecting portions (19b) can be transferred from this transportation and fitting position into a connecting position projecting both above the outer circumference and above the underside of hotplate (1b), in which they can be connected in a simple manner with a connecting piece (31) of the appliance lines (34). This ensures both an equiaxial automated stacking of the hotplates and an automated fitting of the hotplate in a hob or the like in simple manner.

Abstract: An electrical component (11) comprises a support (12) largely made from unalloyed steel sheet (13) with an aluminum coating (14). This serves as the anchoring coating for a glass, fused or fired insulating layer (15) applied to the conductor (16). The component is suitable as a self-supporting, heat-emitting room heating resistance element, as well as an electronic support and slide-in element.