Disclosed are a ceramic electric heating element having a two-layer structure, and an electric soldering iron. The electric heating element having a two-layer ceramic structure comprises an inner conducting layer and an outer insulating layer; the insulating layer wraps the conducting layer, and the conducting layer is exposed outside the insulating layer at the head and tail of the electric heating element. In addition, the ceramic electric heating element having a two-layer structure is used to the electric soldering iron. The present invention allows the miniaturization in the manufacture of ceramic electric heating bodies, with low production cost and low difficulty in respect of the process.

Hot surface igniter assemblies used in cooktops are shown and described. The hot surface igniters include a silicon nitride ceramic body with an embedded, resistive, heat-generating circuit. The igniters are less than 0.04 inches thick, and when energized, they reach surface temperatures in excess of 2000° F. in under 4 seconds to ignite combustible gas such as propane, butane, or natural gas. Examples of cook top burner systems are also provided which allow the igniter to remain on after ignition at a power level that is lower than during ignition but high enough to ignite the cooking gas should a flame out occur. Examples are also provided of burners that ignite on a low flow setting (e.g., simmer) as opposed the high flow settings that are common in cook top industry.

Hot surface igniter assemblies used in cooktops are shown and described. The hot surface igniters include a silicon nitride ceramic body with an embedded, resistive, heat-generating circuit. The igniters are less than 0.04 inches thick, and when energized, they reach surface temperatures in excess of 2000° F. in under 4 seconds to ignite cooking gas such as propane, butane, or natural gas. Examples of cook top burner systems are also provided which allow the igniter to remain on after ignition at a power level that is lower than during ignition but high enough to ignite the cooking gas should a flame out occur. Examples are also provided of burners that ignite on a low flow setting (e.g., simmer) as opposed the high flow settings that are common in cook top industry.

Various embodiments disclose a glow plug for a solid oxide fuel cell system. The glow plug includes a housing having a first end portion and a second end portion. The glow plug includes a heating element longitudinally disposed in the housing, extending from the second end portion of the housing towards the first end portion and extending outwardly from the housing for igniting fuel. Further, the glow plug includes a pair of coiled wires electrically connected to the heating element. Further, the glow plug includes a potting compound disposed within the second end portion of the housing for securing electrical coupling of the pair of coiled wires with the heating element. Furthermore, the glow plug includes a sealing element configured to form an air-tight connection between the housing and the heating element. The sealing element is positioned on top of the potting compound.

Various embodiments disclose a glow plug for a solid oxide fuel cell system. The glow plug includes a housing having a first end portion and a second end portion. The glow plug includes a heating element longitudinally disposed in the housing, extending from the second end portion of the housing towards the first end portion and extending outwardly from the housing for igniting fuel. Further, the glow plug includes a pair of coiled wires electrically connected to the heating element. Further, the glow plug includes a potting compound disposed within the second end portion of the housing for securing electrical coupling of the pair of coiled wires with the heating element. Furthermore, the glow plug includes a sealing element configured to form an air-tight connection between the housing and the heating element. The sealing element is positioned on top of the potting compound.

A heater includes a base, a heat element embedded in the base, a cylindrical body including a first end and a second end being open, and a metal fixture including a first hole receiving the cylindrical body. The cylindrical body includes a first cylinder including the first end and a second cylinder including the second end and continuous with the first cylinder. The second cylinder has a smaller outer diameter than the first cylinder. The cylindrical body includes a ridge located on an outer circumferential surface of the second cylinder and extending in an axial direction of the second cylinder. The cylindrical body receives the base with an end of the base placed and fixed through the first end being open. An inner circumferential surface of the first hole surrounds the second cylinder. The metal fixture is in contact with the at least one ridge.

A heater includes a ceramic body of bar shape; and a heat-generating resistor disposed in an inside of the ceramic body, when viewed in a transverse section, the heat-generating resistor including at least one step portion provided in an outer periphery part of the heat-generating resistor, the at least one step portion having such a shape that semicircular portions bisected in a diametrical direction of the heat-generating resistor deviate from each other along the diametrical direction.

A pressure-sensor-integrated glow plug which can increase reliability of a bonding portion between a ceramic heater and a metal-made outer sleeve while being manufactured with relatively simple manufacturing steps and, at the same time, can maintain airtightness over a long period, and a method of manufacturing such a pressure-sensor-integrated glow plug.

A high-voltage ceramic electric heating element, comprising a body (9), the body (9) being hollow and having an open trailing portion, and a notch (7) being provided on the body (9) in the axial direction and extending through from left to right; a temperature control region (8) is provided at a position on an outer resistance layer (2) of the body (9), and the cross sectional area of the temperature control region (8) is smaller than the cross sectional area of the body (9). Using the high-voltage ceramic electric heating element can improve the ignition reliability and the service life.

Provided is a glow plug assembly having dual terminals formed to enable a fast response and reliable control thereof by preventing noise generation caused by grounding, and the assembly including: a housing; a heating tube; a cap; first and second terminals of which lower parts enter inside the heating tube; and a heating coil of which opposite ends are engaged with the first and the second terminals, and a winding part is placed close to the heating tube, wherein the first terminal is shorter than the second terminal in length and is engaged with the heating coil, and the second terminal extends downward to be longer than the first terminal in length, and has a bent part that leads the second terminal to a center of the wound heating coil to secure an insulation space relative to the heating coil, and is engaged with the heating coil.