Abstract: A device is disclosed with an internal conductor, which is arranged within the tube interior of a tubular metal sheath and is electrically insulated from this sheath with a compacted, electrically insulating material, in which the compacted electrically insulating material is a compacted magnesium oxide granulate made from magnesium oxide grains of different sizes with edges and projections, and that sections, especially edges and projections of magnesium oxide grains are pressed, under local deformation of the internal conductor and/or the tubular metal sheath, into the internal conductor or into the tubular metal sheath. A method for manufacturing such a device is also disclosed.

Abstract: An electrical heating element for an electrical heating device is provided, wherein the electrical heating element is made from a coiled resistive wire with flat ribbon geometry and one or two connector assemblies, wherein the resistive wire with flat ribbon geometry is coiled into coils with an inner diameter, an outer diameter, and a distance between adjacent coils such that the flat side of the resistive wire with flat ribbon geometry runs parallel to the coil axis, and wherein the connector assemblies have at least one connection element that is in surface-area contact with a section of the resistive wire with flat ribbon geometry. In addition, an electrical heating device with such an electrical heating element and a method for manufacturing such an electrical heating device are also provided.

Abstract: An electrical tubular heating element is disclosed with a tubular metal sheath, in whose interior at least one electrical heating element, which is constructed as a resistive wire, arranged electrically insulated from the tubular metal sheath at least in sections, in which the electrical heating element has a base body, which consists of one or more sections of the electrical heating element each with essentially constant cross section, and two end sections and that at least one end section of at least one of the electrical heating elements is subjected to a shape-changing process, so that the cross section of the end section is reduced at least in sub-areas of the end section in comparison to the cross section in each section of the base body. A method for manufacturing such an electrical tubular heating element is also disclosed.

Abstract: A method for manufacturing an electrical heating element is provided, especially for electrical heating devices and load resistors. The method includes the steps of defining at least one heating conductor, providing a heating element blank with geometric dimensions that are selected such that the defined at least one heating conductor can be arranged in a sub-volume of a space taken up by material of the heating element blank, and machining the heating element blank, so that the defined at least one heating conductor is generated by removing material from the heating element blank.

Abstract: A feedthrough is disclosed for feeding a connection for an electrical heating device through a metal wall for supplying the electrical heating device with current, wherein the connection is part of the feedthrough and is formed by a connection conductor, which is electrically isolated by an electrically insulating material from an outer sheath of the feedthrough that is made from a metal at least in some sections, wherein the connection has at least one exposed connection conductor section, in which the outer sheath has multiple outer sheath sections electrically insulated from each other in the longitudinal direction of the connection conductor. An electrical heating device with such a feedthrough, a system with such a feedthrough and a method for manufacturing such a feedthrough are also disclosed.

Abstract: An internal structure for an electrical heating device includes an electrical heating element. The internal structure includes a connection section for holding an end section of the electrical heating element or a connecting wire, with which one of the two end sections is connected. A turnaround section is positioned opposite the connection section. A spacer runs between the connection section and the turnaround section and is topped by the turnaround section in a radial direction relative to the profile of the spacer. The turnaround section has, for a turned-around electrical heating element or for a turned-around connecting wire in the area topping the spacer, a connecting bar by means of which the electrical heating element or the connecting wire is guided and thus turned around, with this connecting wire being connected to an end section.

Abstract: Heating cartridge with a tubular metal sheathing, whose interior houses an electrical heating element that is wound on a winding form and is electrically insulated from the tubular metal sheathing by embedding in an electrically non-conductive insulating material, and at least one temperature sensor with supply lines, wherein at least one supply line, preferably both supply lines, of at least one temperature sensor runs between the winding form and the tubular metal sheathing and is electrically insulated from the winding form and the heating element wound thereon and also from the tubular metal sheathing.

Abstract: A method for manufacturing an electrical heating device includes the steps of providing a coil form with a longitudinal axis, winding an electrical heating element on the coil form along the longitudinal axis and inserting one end section of the electrical heating element and a connecting wire into the opening passing through the coil form, inserting the coil form with an electrical heating element wound on it into an opening passing through the coil form parallel to the longitudinal axis into the interior of a tubular metal jacket, filling the tubular metal jacket with an electrically insulating, heat-conductive powder and compacting the tubular metal jacket with coil form inserted therein and filled with the electrically insulating, heat-conductive powder, wherein, by means of the compaction, the coil form is deformed to change the ratio between the length of the main axis and the length of the secondary axis.

Abstract: A heat-conducting body (110, 210, 310, 410, 510, 610, 710, 810), for a nozzle heater (100, 200, 300, 400, 500, 600, 700, 800) has a groove with a bottom (913, 943) or a plurality of grooves with a bottom (913, 943) each. The one groove or the plurality of grooves has/have a first section (111, 211, 311, 411, 511, 611, 711, 811, 911) and a second section (512, 712, 912). The first section and the second section cross or intersect each other at least at one point. A depth of the first section (111, 211, 311, 411, 511, 611, 711, 811, 911) differs from a depth of the second section (512, 712, 912) at least at the points at which the first section (111, 211, 311, 411, 511, 611, 711, 811, 911) and the second section (512, 712, 912) cross each other.

Abstract: An electrical heating device (1) includes a housing (2, 102) having a fluid inlet (3) for the intake of a fluid to be heated into the housing (2, 102) and having a fluid outlet (4) for the discharge of the fluid from the housing (2, 102). A flow channel (5) for the fluid is formed between the fluid inlet (3) and fluid outlet (4), and at least one heating instrument (6, 105, 205) extends into the flow channel (5) in the housing (2, 102). This heating instrument has a sleeve (7, 207) that surrounds an interior of the heating instrument (6, 105, 205) in a fluid-tight way. At least one heating element (8, 208) is arranged in the sleeve (7, 207), and at least one sensor element (9, 109, 209) is arranged in the sleeve (7, 207) for monitoring the temperature of the at least one heating element (8, 208).

Abstract: An electrically heatable catalytic converter (100, 200, 300, 400) for treating a gas stream, especially of the exhaust gas stream of an internal combustion engine, the electrically heatable catalytic converter (100, 200, 300, 400) has a tubular housing (101, 201, 301, 401), an interior space enclosed by the tubular housing (101, 201, 301, 401), and a porous structure, which is arranged in the interior space of the tubular housing (101, 201, 301, 401) and can be heated by an electric heater, in which the electric heater is a mineral-insulated heater (103, 203, 303, 403) with a heat conductor (104, 204, 304, 404), with at least one front-side connection opening (109, 209, 210, 309, 409) and with at least one outer metal jacket (108, 208, 308, 408), the mineral-insulated heater (103, 203, 303, 403) has at least one section (103, 203a, 203b, 303a), which is passed through a housing wall.

Abstract: A gas duct (100) has a duct wall (110) enclosing an interior space (120), a heated porous metal structure (113) arranged in the interior space (120) for passing through gases and an electric heater (102). The electric heater (102) is a mineral-insulated heater including a heat conductor (104), one or more front-side connection openings and an outer metal jacket (108). The electric heater (102) has a section (102a), which is passed through the duct wall (110), so that all front-side connection openings (116) are arranged outside the interior space (120) of the gas duct (100) and the outer metal jacket (108) is welded or soldered to the duct wall (110) in the section. The heat conductor (104) is completely embedded in a ceramic insulation (106) at least in the sections of the electric heater (102) that are arranged in the interior space (120) of the gas duct (100).

Abstract: A method connects an electrical device (10), which has a tubular metal sheath (13) with protruding electrical conductors and contact sections (11, 12) connecting to contact sections (21, 22) of electrical conductors (23, 24) of a connection cable (20) by an insulating element (40, 140) that has receptacles (41, 42, 43, 44, 141, 142, 143, 144). The respective contact sections (11, 21, 12, 22) overlap one another or are adjacent to one another in the contact area (45, 48, 145, 148), and establish an electrical connection (51, 52) between the respective contact sections (11, 21, 12, 22). The electrical connection (51, 52) is established through an opening (46, 47, 49, 50, 146, 147, 149, 150), which forms an additional access to the contact area (45, 48, 145, 148). An electrical device (10) is provided with receptacles with the opening, which forms an additional access to the contact area.

Abstract: An electrical cartridge type heater (100) includes an outer metallic jacket (110) an electrical heating element (120, 121) arranged in an interior space (140) of the outer metallic jacket (110) and a device for monitoring the temperature (130), which is galvanically separated from the electrical heating element (120, 121) and is arranged in the interior space (140) of the outer metallic jacket (110). The device for monitoring the temperature (130) includes a wire or a tube, in addition to the electrical heating element (120, 121), made of a material that changes resistance with temperature change with a value of the temperature coefficient of the electrical resistance greater than 800 ppm/K, and especially preferably greater than 4,000 ppm/K between 20° C. and 105° C. The wire or the tube is directly embedded into an electrically non-conducting filler filling a remaining interior space (140) of the outer metallic jacket (110).

Abstract: An air and/or aerosol heater (10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150), especially for an e-cigarette, includes a tube (11, 21, 31, 34, 35, 41, 51, 61, 71, 81, 91, 101, 111, 121, 131, 141, 151), in which air and/or aerosol can be heated, and includes a resistor element (12, 22, 32, 42, 52, 62, 72, 82, 92, 102, 112, 122, 132, 142, 152) arranged on the outer surface of the tube (11, 21, 31, 34, 35, 41, 51, 61, 71, 81, 91, 101, 111, 121, 131, 141, 151) or on the inner surface of the tube (11, 21, 31, 34, 35, 41, 51, 61, 71, 81, 91, 101, 111, 121, 131, 141, 151). The resistor element (12, 22, 32, 42, 52, 62, 72, 82, 92, 102, 112, 132, 142, 152) is fixed on the tube (11, 21, 31, 34, 35, 41, 51, 61, 71, 81, 91, 101, 111, 121, 131, 141, 151).

Abstract: An electrical heating cartridge with an outer tubular metal casing and a control element arranged inside the outer tubular metal casing. An electrical heating element is arranged at least in sections inside the outer tubular metal casing, wherein the electrical heating element is shaped such that it describes a space curve that defines an interior space. The electrical heating element is electrically insulated from the outer tubular metal casing. The control element is arranged at least in sections embedded in an electrically insulating, heat-conducting material parallel to the direction of extent of the interior space defined by the space curve described by the electrical heating element.

Abstract: A method for producing an electrical heating device with the steps of preparing a sleeve from a first material that has a first strength; arranging an electrical heating element in the sleeve; arranging of a filler material in the sleeve, so that parts of the electrical heating element carrying current are electrically isolated from the sleeve and the position of the electrical heating element in the sleeve is fixed, and at least section-wise compression of the sleeve, of the electrical heating element is arranged in sections of the sleeve that are compressed, and of the filler material arranged in sections of the sleeve that are compressed, wherein, before the completion of the at least section-wise compression of the sleeve, in sections to be compressed, a tubular section is arranged that is made from a second material that has a second strength higher than the first strength.

Abstract: A device (100, 200, 1100, 2100) converts electricity into heat. A first flat winding support (110, 130, 210a, 210b, 230a, 230b, 310a, 310b, 330a, 330b, 510, 610, 630, 710, 1110, 1130, 2110, 2130) including electrically insulating material, has a first electric heating element (140, 150, 240a, 240b, 250a, 250b, 340a, 340b, 350a, 350b, 540, 640, 650, 740, 750) wound thereon. The first flat winding support with wound first electric heating element is inserted into a housing (190, 290, 1190, 2190) electrically insulated against the housing. A second flat winding support, including electrically insulating material, has a second electric heating element (140, 150, 240a, 240b, 250a, 250b, 340a, 340b, 350a, 350b, 540, 640, 650, 740, 750), which is galvanically separated from the first electric heating element, wound thereon. The second flat winding support with wound second electric heating element is inserted into the housing electrically insulated against the housing.

Abstract: A gas duct (100) has a duct wall (110) enclosing an interior space (120), a heated porous metal structure (113) arranged in the interior space (120) for passing through gases and an electric heater (102). The electric heater (102) is a mineral-insulated heater including a heat conductor (104), one or more front-side connection openings and an outer metal jacket (108). The electric heater (102) has a section (102a), which is passed through the duct wall (110), so that all front-side connection openings (116) are arranged outside the interior space (120) of the gas duct (100) and the outer metal jacket (108) is welded or soldered to the duct wall (110) in the section. The heat conductor (104) is completely embedded in a ceramic insulation (106) at least in the sections of the electric heater (102) that are arranged in the interior space (120) of the gas duct (100).

Abstract: A gas duct (100) has a duct wall (110) enclosing an interior space (120), a heated porous metal structure (113) arranged in the interior space (120) for passing through gases and an electric heater (102). The electric heater (102) is a mineral-insulated heater including a heat conductor (104), one or more front-side connection openings and an outer metal jacket (108). The electric heater (102) has a section (102a), which is passed through the duct wall (110), so that all front-side connection openings (116) are arranged outside the interior space (120) of the gas duct (100) and the outer metal jacket (108) is welded or soldered to the duct wall (110) in the section. The heat conductor (104) is completely embedded in a ceramic insulation (106) at least in the sections of the electric heater (102) that are arranged in the interior space (120) of the gas duct (100).