2114results about "Stoves/ranges tops" patented technology

An indoor or outdoor downdraft ventilator moves via an electronic controller through preferably a touch keypad. This provides precise control and an efficient way of removal of gases / fumes off a cook top. The electronically controlled telescoping downdraft creates a nearly infinite and selectable range of heights above a cook top from which to properly collect and draw in, filter, re-circulate, or expel exhaust. The downdraft incorporates a lighting system to illuminate the work surface and sensors to detect temperature, filter change requirements, speed, stop points, power, resistance, voltage, and program med operations.

A contact heat-transferring electric hotplate (11) is provided, which is made from nonoxidic ceramic, particularly silicon nitride. Its very thin hotplate body (14) in the form of a disk is installed in self-supporting manner in a hob plate, e.g. by bonding, and has an extremely flat surface or which is adapted to the cooking vessel shape, which creates such a small gap with respect to said vessel that a coupling is possible even with higher power densities with only a temperature difference of a few degrees. The heating means (17) is also in contact with or directly connected to the underside of the hotplate body (14).

The present invention relates to grill assemblies for generating heat from various sources. In particular, the present invention relates to grill assemblies including various control members to detect unintended heating and terminating such. The present invention also relates to various methods of detecting the unintended heating by the heating elements and stopping such operations. The present invention also relates to various processes for providing various control members and grill assemblies including such control members. Such control members may be incorporated into grill assemblies for generating heat from various sources, e.g., burning gas, flowing electricity, irradiating electromagnetic waves thereby, and so on. In addition, the control members of this invention may be implemented into various stationary and / or portable grills and ovens for cooking food, various fireplaces or burners for heating interior, and the like.

The translucent or opaque colored glass-ceramic article provides a cooking surface and has an adjustable light transmission in a visible range under 15%, as measured for a 4 mm sample thickness; a flaw-free upper surface with an impact resistance of greater than 18 cm breaking height, as tested with a 200 g steel ball in a falling ball test; a temperature difference resistance of greater than 500° C.; a high crystallinity with keatite mixed crystals as principal crystal phase in an interior of the glass-ceramic article and with a residual glass phase fraction of less than 8% by weight; a glassy upper surface layer of from 0.5 to 2.5 μm thick, which is substantially free of high quartz mixed crystals and which inhibits chemical reactions, and a content of enriched ingredients in the residual glass phase in the interior of the glass-ceramic and in the glassy surface layer of ΣNa2O+K2O+CaO+SrO+BaO+F+refining agents of from 0.2 to 1.6% by weight.

The present invention relates to an oxygenated fuel composition suitable for use in compression ignition internal combustion engines, equipped with inlet air heater and catalytic alcohol dehydration equipment suitable for chemical equilibrium conversion of methanol and higher alcohol to their associated ether plus water.

A pizza oven that has an air curtain or air wash along the bottom of the cooking stones that reduces heat transfer from the burners to the stones during idle modes to thereby prevent over heating and burning of pizza bottoms during an ensuing cooking mode. The heating stones are situated on a plurality of bosses that extend from a base plate disposed between the burner flame and the stones. The air curtain extends along a gap between the bottom surface of the stones and the upper surface of the base plate.

A grill having a platen with a plurality of heating zones. Each heating zone has a heating unit. Thermal transfer between adjacent heat zones is limited by air gaps and insulation. The heater unit of each zone has a heater that is disposed to attain substantially uniform temperature of the platen for that zone before a temperature sensor senses a set temperature during either pre-heat or recovery modes.

The gas manifold assembly (1) is adapted to a cooking appliance for supplying the burners (21) thereof, and is equipped with various taps (C1-C4) of the rotary type, installed on a elongated tubular-shaped manifold conduit (2), which is disposed parallel to the front wall (FP) of the appliance and supported on it. The taps (C1-C4) have a respective installation seat (7) with a built-in gas intake connected to the elongated conduit (2), and mounting is carried out by means of a one-piece mounting device (12), which in turn has an integral means (12b) for supporting and fastening the manifold assembly (1) to the front wall (FP), for which purpose the aligned tap drive shafts (16) stand proud of the front wall (FP) and the tap outlet conduits (8) face and adjoin their respective burner (21).

The cook top includes a colorless transparent glass ceramic plate, which is provided with an opaque coating extending over its underside, except that in at least one window area a window coating is provided on the underside of the glass ceramic plate area instead of the opaque coating. In order to optimize colored displays arranged under the at least one window area and to facilitate the use of capacitive touch sensors, the window coating is a burned-in noble metal preparation with an electrical surface resistance of 1 MΩ / □ and in the at least one window area the glass ceramic plate coated with the window coating has a transmission in a range from 1.0 to 21.0% and a light scattering in a range of from 0.0 to 1.0% for visible light with wavelengths of from 400 nm to 750 nm.

The cooking unit has a glass-ceramic panel (1) providing a cooking surface, which is made of transparent colorless glass-ceramic bulk material or a glass panel made of pre-stressed transparent colorless glass material. Radiant heating elements (3) are provided under the glass or glass-ceramic panel, which heat respective cooking zones. The glass or glass-ceramic panel has a full surface decorative coating (7) on its upper side, which makes dirt and usage marks less conspicuous, and an IR permeable coating (6) having a solid or plain color, preferably bisque-like, on its underside. The IR permeable coating having the solid or plain color prevents an observer from viewing the internal components of the cooking unit that are under the cooking panel from above it.

The invention relates to a transparent protective layer, in particular a scratchproof layer for glass and glass-ceramic, which is able to withstand high temperatures, has a smooth and dense surface, an attractive surface design and is preferably used for coating cooking plates. A protective layer according to the invention comprises at least one crystalline metal oxide layer which has at least one interlayer formed from an amorphous, thermally stable mixed oxide, the interlayer being arranged being sublayers of the metal oxide layer. A further protective layer according to the invention comprises at least one amorphous, thermally stable mixed oxide layer which has at least one interlayer formed from a crystalline metal oxide, the interlayer being arranged between the sublayers of the amorphous mixed oxide layer. The amorphous mixed oxide layer has at least two metallic components. The crystalline metal oxide layers preferably consist of yttrium-stabilized zirconium oxide, and the amorphous mixed oxide layers preferably consist of titanium / aluminum oxide.

The invention discloses an air thermalization gas burner, which comprises a burner base, a furnace ring and a burning head. The burner base is provided with an air supply port and a plurality of air nozzles as well as an air supply channel communicated with the air nozzles at external side; the air supply channel is positioned with a blower air inlet; the furnace ring, a popper and a burner base form a firebox; wherein, the furnace ring is a hollow interlayer, which is provided with a plurality of back-wind ports on the internal layer interning wall near to the port; an internal cavum of the furnace ring is communicated with the air supply channel; the blower preaches the air form the air inlet, the air supply channel and the air nozzles into the firebox and the air can burn with the gas entered from the air supply port in the firebox to heat the popper; the high temperature air can pass through the back-wind ports and then return to the firebox for burning after passing through the internal cavum of the furnace ring, the air supply channel and the air nozzles; the heat of the high temperature air can be recovered and utilized as well as sufficiently burned, thereby reducing the usage of gas and restraining the generation of gas harmful to human's health as well as deducing the pollution for environment.

An appliance, such as a cooking range, a clothes dryer, a clothes washer, an oven or the like, includes a console along a rear edge of the appliance which can pivot between an upright in-use position and a lower shipping, repair and / or servicing position. The console is preferably of a two-part construction including a front housing body having an integrally injection molded encapsulation or frame peripherally retaining a touch sensor control panel which can be readily accessed when the console is in its lower repair position.

Decorative paints are typically burned in at relatively high temperatures, preferably in connection with the thermal ceramicizing process. In order to provide a glass ceramic panel having a cooking surface with a pleasing deep black, very smooth decoration by a burned-in decorative paint, the glass ceramic panel is formed from a melt that is black and the decorative paint on the black glass ceramic panel contains a colorless glass flux and from 0 to 10 percent by weight of at least one black pigment. The decorative paint can consist of the colorless melted-on glass flux. The glass flux preferably has a composition in percent by weight of Li2O, 0-5; Na2O, 0-5; K2O, <2; ΣLi2O+Na2O+K2O, 1-10; MgO, 0-3; CaO, 0-4; SrO, 0-4; BaO, 0-4; ZnO, 0-4; B2O3, 15-27; Al2O3, 10-20; SiO2, 43-58; TiO2, 0-3; ZrO2, Sb2O3, 0-2; F, 0-3.

A composite cooking apparatus having a body, a heating unit, an induction heating unit, and an insulating plate. The heating unit is positioned in the body to generate heat used to heat food. The induction heating unit is positioned adjacent to the heating unit to generate a magnetic field to cook the food by induction heating. The insulating plate is positioned between the heating unit and the induction heating unit to prevent heat generated from the heating unit from being transmitted to the induction heating unit. Further, the insulating plate is provided with at least one heat reflecting layer to reflect the heat generated from the heating unit.

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.

A protective layer having at least one hard-material layer is provided. The hard-material layer is formed from one or more of the following materials metal oxide, metal nitride, metal carbide, metal oxynitride, metal carbonitride, and metal oxycarbonitride. The hard-material layer has laterally closely cohesive, crystalline columns which grow perpendicular to the surface of the body. In some embodiments, the crystalline columns have a lateral dimension which is on average less than 1 μm, preferably less than 200 nm, and which predominantly has crystal orientations which, in the case of columnar growth, have little tendency to widen out, the surface roughness of the hard-material layer having an Ra value of less than 50 nm, preferably less than 20 nm.

A built-in heating cooker which features both good cooling performance and effective countermeasures against spilled liquids by preventing ingress of water into the cooker body with a simple ventilation structure. This built-in cooker comprises a top plate where a pot and the like are placed, a support for supporting the top plate from underneath, a top frame covering the edge of the top plate and a frame constituting the cooker body. The support has a cooker-supporting face for supporting the cooker, and this is positioned outside of the top plate-supporting face. A first opening is provided on at least one side wall provided between the top plate-supporting face and the cooker-supporting face. A second opening is provided on a frame in a position corresponding to the first opening.

A control valve assembly includes an inlet for receiving a gas flow and an outlet for providing the gas flow to a gas burner. The assembly also includes a positive-shutoff valve for interrupting the gas flow from the inlet. A micro electromechanical system (MEMS) valve is coupled in series to the positive-shutoff value between the inlet and the outlet for regulating the gas flow from the inlet to the outlet.

A cooking appliance includes a frame having a bottom wall for supporting heating elements and a peripheral side portion that extends from and about an outer periphery of the bottom wall so as to define a chassis upon which is arranged a cooktop. The peripheral side portion includes a plurality of openings that lead into the chassis. A control box is mounted in the chassis for housing control elements and associated electronics. The control box includes a plurality of side walls, with at least one of the side walls being provided with a vent which opens into the chassis. A fan is mounted within the chassis wherein, when the fan is activated, a cooling airflow is developed, with a first portion being drawn directly into the chassis, while a second portion first enters the control box housing before being directed into the chassis. A cover can be disposed beneath the chassis to guide and disperse the airflow.

In one aspect the invention discloses a gas cooktop which is relatively easy to clean and which is not visually complex. The gas cooktop surface is provided with a trivet having two operating conditions. In a first condition the trivet is retracted and is substantially flush with the cooktop surface. In a second condition the trivet is extended Lo support a cooking vessel above a gas burner. In another aspect the invention discloses an improved gas burner with a high turn-down ratio. The improved burner includes first and second gas flow passages, a flame front locator, in one of the passages and a burner head. Fuel gas is injected into an end of one of said passages and is ignited to establish a flame at the flame front locator. Secondary combustion air is provided through the other of the passages which on a high setting enables secondary combustion and on a low setting may mix with the hot gases and cool them resulting in a lower temperature at the cooking vessel.

A heat distributing tray for use in a barbecue grill includes a corrugated unitary body of heat conducting material having alternating solid and grated walls which define channels. More specifically, the body includes first and second side portions defined by both solid walls which extend at gradually decreasing angles with respect to a common horizontal plane and varying length grated walls interconnecting the solid walls. In use, the tray is placed over one or more heating elements in a barbecue housing, with radiant and convective heat from the heating element being optimally distributed throughout the entire interior portion of the barbecue grill due to the relative structure and configuration of the solid walls in relation to the grated walls.

Disclosed are articles that are provided with a haptically-perceptible surface. The articles include a coated glass or glass ceramic substrate which is provided with a layer with haptic properties so that the layer has a haptically perceptible texture. The layer includes texturing inorganic and / or polysiloxane-based particles which are fixed on the substrate by a layer-forming material. The particles cause protrusions on the layer and so produce the haptically perceptible texture.