An electrical load resistance includes a housing having at least one U-shaped receiving pocket, in which at least one PTC heating element is accommodated. The PTC heating element includes at least one PTC element and at least one contact plate electrically conductively connected to the PTC element for energizing the PTC element. The contact plate has a terminal lug for plug contacting the PTC element, and the PTC heating element abuts at least on opposite main side surfaces of the receiving pocket in a heat-conducting manner and projects beyond the terminal lug of the receiving pocket. The housing of the electrical load resistance is closed, and thus has no inlet or outlet openings for a medium to be heated. Also provided is a device with an electrical load resistance for reducing the starting time of an internal combustion engine, a method for reducing the starting time of an internal combustion engine, and a use of a PTC heating device as an electrical load resistance for reducing the starting time of an internal combustion engine.

A heater element for vehicle compartment heating in a vehicle, including a pillar-shaped honeycomb structure portion having: an outer peripheral side wall; and partition walls disposed inside the outer peripheral side wall, the partition walls defining a plurality of cells which form flow paths from a first end face to a second end face;
wherein the partition walls have PTC characteristics; an average thickness of the partition walls is 0.13 mm or less; and an open frontal area on the first and second end faces is 0.81 or more.

A PTC thermistor module for a temperature control device may include at least one PTC thermistor element. The PTC thermistor element may include an upper side and an underside facing away from the upper side. The upper side and on the underside may be respectively applied in a heat-exchanging manner with a heat-conducting plate. An edge side, connecting the upper side and the underside with one another in an edge-side manner, of at least one of the PTC thermistor elements, may be applied to a heat-conducting element, which has a thermal conductivity of at least 5 W/mK. A temperature control device may include at least one such PTC thermistor module.

Electric heating device and method for its manufacture An electric heating device a housing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one PTC heating element with a heating element casing protrudes in the direction toward the heating chamber. At least one PTC element and conductor tracks, electrically connected in the connection chamber for energizing the PTC element with different polarities and connected to the PTC element in an electrically conductive manner, are supported in the heating element casing an insulated manner. For improved support of the PTC heating element, a holding element, engaging around the heating element casing, is connected to the partition wall on its side facing the heating chamber and is connected to the heating element casing. Also disclosed is a method for the manufacture of such an electric heating device.

The present disclosure describes a PTC heating device for, e.g., an air-conditioning system of a motor vehicle. The PTC heating device includes first and second PTC thermistors each having a first and second electrical contacting surface that lie opposite one another. The PTC thermistors are arranged sandwiched between a first and a second electrical insulation. A first electrical line path is arranged between the first PTC thermistors and the first electrical insulation. The first electrical line path is electrically connected to the first contacting surface of the first PTC thermistors. A second electrical line path is arranged between the second PTC thermistors and the first electrical insulation. The second electrical line path is electrically isolated from the first line path and electrically connected to the first contacting surface of the second electric PTC thermistors.

An electric heating device includes a housing having a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one receiving pocket, protruding into the heating chamber as a heating rib tapering towards its lower, closed end protrudes. A PTC heating element includes at least one PTC element and conductor tracks for energizing the PTC element with different polarities. The conductor tracks are electrically conductively connected to the PTC element and are electrically connected in the connection chamber. A pressure element is received which holds heat extraction surfaces of the PTC element abutted against oppositely disposed inner surfaces of the receiving pocket. The pressure element includes a sheet metal strip which, by punching and bending, forms spring segments protruding from the plane of the sheet metal strip. The spring elements are provided in a planar manner distributed over a heat extraction surface of the PTC element provided adjoining the respective pressure element.

An electric heating includes a housing having a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one receiving pocket, protruding into the heating chamber as a heating rib, preferably tapering towards its lower and closed end, protrudes. A PTC heating element, including at least one PTC element and conductor tracks for energizing the PTC element with different polarities, is accomodated in the housing with the coductor tracks being electrically conductively connected to the PTC heating element and being are electrically connected in the connection chamber. A pressure element is received in the housing and holds heat extraction surfaces of the PTC element abutted against oppositely disposed inner surfaces of the receiving pocket. To reduce mechanical stress on the PTC element or an insulating layer and, while at the same time retaining the PTC heating element in the receiving pocket, at least one web acts in a positive-fit and/or force-fit manner on the pressure element.

The invention relates to a method for producing a corrugated fin element for a heating register or for another heating device, through which corrugated fin element a flow can pass, to a corrugated fin element produced according to such a method, and to a heating register designed with such corrugated fin elements, wherein the corrugated fin elements are produced by unfolding.

A heat exchanger has a fluid flow passage having an inlet and an outlet, and with a first plate and a second plate in opposed facing relation to one another. The fluid flow passage is defined by a space between the inner surfaces of the first and second plates. An electrical heating element is outside the fluid flow passage and adjacent to the outer surface of the first plate, such that heat produced by the electrical heating element is transferred through the first plate to the fluid in the fluid flow passage during use of the heat exchanger. In an embodiment, the first plate has an opening to receive a heater plate component including a first plate portion having an inner surface bonded to a turbulence-enhancing insert and an outer surface bonded to the electrical heating element.

A method for the production of a heat-generating element includes placing in which at least two electrical conductor elements, provided with through holes, onto a film provided with an adhesive mass, pressing the conductor elements against the films such that the mass is forced into the through holes. At least one PTC element is subsequently placed onto one of the conductor elements, and then the other of the conductor elements, together with the film adhering thereto, is placed opposite to the one of the conductor elements onto the PTC element. The invention further relates to a heat-generating element with a PTC element and electrical conductor elements connected thereto in an electrically conductive manner for energizing the PTC element with a different polarity and an electrical insulation that is provided on the outer side thereof with a film and an adhesive mass applied thereto. At least one of the conductor elements is provided with through holes and the mass is at least in part contained in the plane of the conductor element.