An electric heater includes a substrate and an inner plane heating element formed on one surface of the substrate. The inner plane heating element includes an inner pattern portion connecting a start point with an end point. The inner pattern portion includes a first track, a second track located outside the first track and spaced part from the first track, a first bridge connecting the first track with one end of the second track, a third track located outside the second track and spaced apart from the second track, and a second bridge connecting the other end of the second track with the third track. A first gap G1 between the first and second tracks is shorter than a second gap G2 between the second and third tracks along a virtual line crossing the first, second and third tracks and closer to the first bridge than the second bridge.

An electric heater includes a substrate and an inner plane heating element formed on one surface of the substrate. The inner plane heating element includes an inner pattern portion connecting a start point with an end point. The inner pattern portion includes a first track, a second track located outside the first track and spaced part from the first track, a first bridge connecting the first track with one end of the second track, a third track located outside the second track and spaced apart from the second track, and a second bridge connecting the other end of the second track with the third track. A first gap G1 between the first and second tracks is shorter than a second gap G2 between the second and third tracks along a virtual line crossing the first, second and third tracks and closer to the first bridge than the second bridge.

An infrared emitter includes a first refractory layer of a first refractory material, a coiled wire disposed over the first refractory material, and a second refractory layer of a second refractory material, and a portion of the second refractory layer is disposed within a void of the coiled wire.

An appliance includes a spring clip for attaching a radiant burner unit to a cooktop includes a body extending in a lateral direction. A retention tab projects from the body and extends in the lateral direction adjacent the body. A retention arm projects from the body and defines a first spring loop and a lever. The spring loop biases the lever toward the retention tab. The spring clip further includes a snap tab having a support arm projecting from the body in a vertical direction and a tab resiliently flexible toward and away from the support arm.

A cooking appliance with a cooktop includes a glass-ceramic substrate with a top surface for receiving cookware thereon for heating. The surface includes a coating formed by applying a sol-gel coating to the surface after the surface is roughened to increase the surface roughness of the top surface and improve adhesion of the coating thereon. The sol-gel coating forms a matte finish on the cooktop while having anti-stick properties for cleanability.

A cooking appliance with a cooktop includes a glass-ceramic substrate with a top surface for receiving cookware thereon for heating. The surface includes a coating formed by applying a sol-gel coating to the surface after the surface is roughened to increase the surface roughness of the top surface and improve adhesion of the coating thereon. The sol-gel coating forms a matte finish on the cooktop while having anti-stick properties for cleanability.

A cooktop appliance or heating coil assembly may include a heating element, a shroud cover, a thermostat, and a spring bracket. The shroud cover may be disposed within the heating element. The shroud cover may include a top wall defining an upper surface and a lower surface. The thermostat may extend vertically between a distal end and an interior end below the distal end. The distal end may be disposed against the shroud cover at the lower surface. The thermostat may be connected in series between the first and second coil sections of the spiral wound sheathed heating element. The spring bracket may be disposed against the shroud cover at the lower surface and bias the shroud cover upward.

An induction heating type cooktop includes a case, a cover plate that is coupled to an upper end of the case and that includes an upper plate configured to seat an object on an upper surface of the upper plate, a working coil disposed in the case and configured to heat the object, a thin film attached on the upper plate, and a thermal insulating member disposed vertically between a lower surface of the upper plate and the working coil.

An electric heater includes a substrate; and a plane heating element disposed on one surface of the substrate, in which the plane heating element includes a pattern portion including a start point and an end point; and an electrode portion connected to the start point and the end point of the pattern portion, and a thickness of the electrode portion is thicker than a thickness of the pattern portion.

An electric heater includes a substrate; and a plane heating element disposed on one surface of the substrate, in which the plane heating element includes a pattern portion including a start point and an end point; and an electrode portion connected to the start point and the end point of the pattern portion, and a thickness of the electrode portion is thicker than a thickness of the pattern portion.