Abstract:
A gas burner has a perforated, hollow body around and defining a combustion chamber. Gaseous fuel is fed to one side of the body, combustion occurs on the other side and the perforations provide a spatial connection between the fuel feed side and the combustion side. The new burner reduces exhaust gas emissions and offers a wide range of performance in the amount of heat energy provided, in the permissible range of gas pressure and in the range of fuels and fuel/air mixtures that can be used with it.
Abstract:
A transport shield is provided for brittle glass and glass ceramic panels susceptible to scratching and fracturing to be integrated into a cooker, in particular as cooking surfaces. The transport shield remains permanently joined to the panel during installation, assembly and operation and is formed to act as a protector during mounting, a positioning aid, a separator, an elongation compensating medium and/or a sealing member and/or an inspection window in profiled panels.
Abstract:
The invention is directed to a cooktop unit for mounting in a frame structure or in a cutout of a work surface. The cooktop unit includes a plate made of glass ceramic and this plate defines the cooking surface. The cooktop unit also includes a metal frame permanently-elastically connected by a silicone adhesive to the lower side in the peripheral region of the plate. A leg of the holding frame connected to the cooktop plate extends flush from the edge of the plate inwardly and parallel to the plate and then bends downwardly at right angles to the plate. The adhesive effects the force-tight connection or bond between the plate and the holding frame. The adhesive defines a peripheral silicone flange at the lateral edges of the plate and at the lateral edge of the leg cemented to the plate. This silicone flange terminates flush with the surface of the plate and projects beyond the lower edge of the leg connected to the plate to form a sealing lip.
Abstract:
Temperature sensors or temperature sensor arrangements made from glass ceramic and bonding film resistors, suitable especially for control and limitation of output in glass ceramic cooking areas, are distinguished in that thin- and/or thick-film resistors are baked on supports of glass ceramic, for example, in the area of the cooking zone of a glass ceramic cooking surface, and one or more glass ceramic resistances are delimited and bonded there, and the film resistors form parallel and/or iterative circuits with the glass ceramic resistances. By suitable selection of the dimensions as well as the surface resistances and temperature coefficients of the bonding film resistors and the type of sensor circuit (parallel and/or iterative circuit), the temperature resistance characteristic of a sensor circuit can be varied within wide limits, e.g., the temperature area of use of a glass ceramic sensor can be considerably expanded toward low temperatures. The geometric shape of a sensor arrangement can be matched to the specified temperature distribution of a surface to be monitored, for example, a glass ceramic cooking surface in the area of the cooking zones, so that practically all areas of the heated surface essential for the temperature control and limitation are detected.
Abstract:
Gas-heated, glass-ceramic cooking stove incorporating at least one improved gas heated radiation burner subassembly. Each such burner subassembly comprises an infrared radiation burner, a glass, a housing about a burner chamber, a burner plate, a nozzle and mixer pipe, an exhaust gas ring, a waste gas conduit, an igniter, and safety and regulating means. A glass ceramic cover plate is integrally associated with each burner subassembly and serves directly as a cooking surface.
Abstract:
Glass ceramic and the process for producing a dark red glass ceramic comprising the production of basic glass by melting at about 1620.degree. C a mixture of approximate percentages of sand 53.30%, hydrated alumina 27.15%, zirconium silicate 1.90%, titanium oxide 2.02%, lithium carbonate 7.49%, sodium carbonate 0.87%, potash 0.62%, dolomite 0.39%, barium carbonate 1.04%, barium nitrate 2.16%, zinc oxide 1.09%, manganese dioxide 0.56%, ferric oxide 0.21%, cobalt oxide 0.36%, nickel oxide 0.05% and antimony oxide 0.73%. After cooling to about 1480.degree. C, the glass is formed into articles, and the articles further cooled to at least 700.degree. C. The articles are then heat treated to 800.degree. C at about .ltoreq.10.degree. C/min., devitrifying the glass from 800.degree. C to 900.degree. C, at, for example, 0.5.degree. C/min and cooling the article from 890.degree. C to room temperature at, for example, 7.degree. C/min.
Abstract:
The method produces a reshaped glass-ceramic article by forced reshaping of a flat green glass part during a ceramicizing process with temporarily lowered viscosity due to crystallization heat. To perform the forced reshaping economically the forced reshaping takes place in a continuous oven for ceramicizing and in an oven section in which the viscosity of the green glass part is temporarily lowered as a result of crystallization heat. An apparatus for performing the process is provided in the continuous oven including different active reshaping devices and/or a hollow mold. The method produces glass-ceramic articles with undamaged surfaces corresponding to surfaces produced during the making of the green glass part (smooth or structured, e.g. knobbed).
Abstract:
For obtaining firmly adhering decorative layers of ceramic colors applied to glass or glass ceramic substrates, prior to stoving, optically inactive inorganic substances, e.g., mica, which are chemically inert with respect to the base enamel and the pigments are added to the base enamel together with the pigments in fine-particle form, e.g., 20-40 &mgr;m, in a quantity of 1-20 wt. %.
Abstract:
Shaped articles made of brittle material having a low coefficient of thermal expansion, for example designed as glass or glass-ceramic plates, are typically encapsulated with a holding frame made of plastic, which is produced by directly encapsulating the edges of the shaped article with plastic by injection moulding. In order to avoid stress concentrations in the shaped article, which inevitably form as a consequence of the differences in thermal expansion and the material-dependent shrinkage behaviour, according to the invention shrinkage-absorbing elements are embedded between the holding frame and the shaped article, which elements additionally ensure a permanently elastic bearing of the shaped articles when used in practice and provide sufficient sealing during use.
Abstract:
An arrangement displays information and operating states on an apparatus such as a cooking apparatus having a plate made of glass and/or glass ceramic and defining a lower surface and a transparent upper surface area where the information is viewed by an operator. The arrangement includes an attachment member; an adhesive for fixedly mounting the attachment member to the lower surface; a display device for generating a light display of the information and operating states below the plate to permit an operator to view the information and operating states through the plate by looking at the upper surface thereof; and, a connecting device for connecting the display device to the attachment member.