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The infinite switch itself was described in a 1975 patent of George F. Esker Jr. and Otto J. Cousins of the Harper Wyman Company. This switch would reset itself as the bi-metallic strip cooled, provided a cycle of calibrated opening and closing. It also provided an indicator light that remained on as long as the knob was not in the closed position.
In natural gas furnaces, water heaters, and room heating systems, a safety cut-off switch is normally included so that the gas supply to the pilot and heating system is shut off by an electrically operated valve if the pilot light goes out. This cut-off switch usually detects the pilot light in one of several ways: A flame rectification device. [2]
The heat source is almost always beneath the cooking surface and for gas-fired applications this is referred to as an under-fired broiler. Most commonly the charbroiler is a series of long evenly spaced metal ribs over a large combustion chamber filled with an array of burners that may have a deflector, briquettes or radiant between the burner ...
A piezo igniter element from a typical lighter. Piezo ignition is a type of ignition that is used in portable camping stoves, gas grills and some lighters. [1] Piezo ignition uses the principle of piezoelectricity, which is the electric charge that accumulates in some materials in response to mechanical deformation.
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The coil changes the linear movement of the metal expansion into a circular movement thanks to the helicoidal shape it draws. One end of the coil is fixed to the housing of the device as a fix point and the other drives an indicating needle inside a circular indicator. A bimetallic strip is also used in a recording thermometer.
Glow plugs are used to help overcome this issue by introducing additional heat energy into the combustion chambers. [1] A glowplug resembles a short metal pencil. The heating element is fitted into its tip. Glowplug filaments must be made of certain materials, such as platinum and iridium, that resist oxidation and withstand high temperature ...
Grilling is usually done outdoors on charcoal grills or gas grills; a recent trend is the concept of infrared grilling. [15] Grilling may also be performed using stove-top " grill pans " which have raised metal ridges for the food to sit on, or using an indoor electric grill .
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