An electric heater includes a substrate (an insulating material capable of forming a conductor pattern on a surface of an insulating substrate), a first plane heating element formed on one surface of the substrate, and a second plane heating element formed on one surface of the substrate to be located outside the first plane heating element. The first plane heating element includes a first pattern portion connecting a start point with an end point located in a first zone, a pair of first electrodes located outside the first zone, and a pair of first connectors connecting the first pattern portion with the first electrodes. The second plane heating element includes a second pattern portion located in a second zone surrounding the first zone and connecting a start point with an end point, and at least some of the first connectors are located in the second zone.

An electric heater includes a substrate (an insulating material capable of forming a conductor pattern on a surface of an insulating substrate), a first plane heating element formed on one surface of the substrate, and a second plane heating element formed on one surface of the substrate to be located outside the first plane heating element. The first plane heating element includes a first pattern portion connecting a start point with an end point located in a first zone, a pair of first electrodes located outside the first zone, and a pair of first connectors connecting the first pattern portion with the first electrodes. The second plane heating element includes a second pattern portion located in a second zone surrounding the first zone and connecting a start point with an end point, and at least some of the first connectors are located in the second zone.

The present disclosure relates to food preparation apparatus with an electrical heating device comprising at least two electrical PTC thermistors for heating a food in a food preparation room, wherein the electrical PTC thermistors are electrically connected in parallel. The parallel-connected PTC thermistors are electrically connected to one another by one or more electrical bridges.

The present disclosure relates to food preparation apparatus with an electrical heating device comprising at least two electrical PTC thermistors for heating a food in a food preparation room, wherein the electrical PTC thermistors are electrically connected in parallel. The parallel-connected PTC thermistors are electrically connected to one another by one or more electrical bridges.

A wafer placement table includes: a ceramic member having a wafer placement surface; a mesh electrode buried in the ceramic member; a conductive connection member in contact with the mesh electrode and exposed to outside from a surface of the ceramic member on the opposite side of the wafer placement surface; and an external current-carrying member joined to a surface of the connection member exposed to outside. The mesh electrode has a mesh opening in a region that faces the connection member, and the mesh opening is filled with a sintered conductor being a sintered body of a mixture containing a conductive powder and a ceramic raw material.

A temperature-regulated apparatus for food and drink preparation and storage, particularly for refrigeration and sous vide cooking. The apparatus is preferably a consumer electronic device comprising a compartment, base, reservoir, tube network, heating and cooling element, and an air pump system. The apparatus is controlled electronically and wirelessly in connection with a hardware and software system.

A temperature-regulated apparatus for food and drink preparation and storage, particularly for refrigeration and sous vide cooking. The apparatus is preferably a consumer electronic device comprising a compartment, base, reservoir, tube network, heating and cooling element, and an air pump system. The apparatus is controlled electronically and wirelessly in connection with a hardware and software system.

An embodiment of a substrate placing part relates to a substrate placing part that is arranged in a substrate processing apparatus. The substrate placing part is divided into a plurality of inner sections that have an inner heating wire and an outer heating wire; and an outer section that is arranged in an edge thereof, that surrounds the inner sections, and that includes the outer heating wire, wherein the inner heating wire is disposed in the same inner section and has a first gap in at least a partial section thereof, the respective inner heating wires disposed in the different inner sections are disposed to have a second gap in a part in which the inner heating wires are parallel to one another, the inner heating wire and the outer heating wire are disposed to have a third gap in a part in which the inner heating wire and the outer heating wire are parallel to one another, and the first gap may be smaller than the second gap.

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.