Abstract: An electric heating device, in particular for a motor vehicle, includes a housing that is at least partially electrically conductive with a circumferential groove provided on its front side, and a cover formed from sheet metal, which closes the housing and engages with a circumferential edge in the groove, which contains a sealing agent. To increase the sealing of the housing while reliably shielding the electrical components housed therein, the circumferential edge has a first leg engaging in the groove and a second leg bent away from it extending therefrom, which is in electrically conductive contact with one of the boundary walls of the groove. In the method for producing the electrical heating device, the circumferential edge is inserted in the groove and a sealing agent then is introduced into the groove, which hardens in the groove.

Abstract: An electric heating device has an at least partially electrically conductive housing and a cover that is formed from sheet metal and that closes the housing. A circumferential groove is provided on an end face of the housing. An adhesive is introduced into the groove, and the cover has a circumferential edge which engages in the groove in such a way that the circumferential edge of the cover is immersed circumferentially in the adhesive. The sealing and fastening of the cover relative to the housing is improved by the fact that circumferential the edge is in contact with a surface that laterally limits the groove and that is arranged at a distance from the opposite surface of the groove.

Abstract: An electrical heating device comprises an electrical heating assembly and a control device adapted to control the electrical heating assembly and a housing base part that is adapted to accommodate the control device. The housing part is connected to a housing cover to form a housing sealed from the environment. The control device and the electrical heating assembly are accommodated in the housing to create a compact design and the best possible EMC protection.

Abstract: An electrical heating device comprises two heating chambers between which an electrical heating assembly is formed. Via a distributor a flow of a medium to be heated entering the electrical heating device in the inflow direction is divided into a first partial flow and a second partial flow. The first partial flow flows through the first heating chamber, while the second partial flow flows through the second heating chamber. For this purpose, the distributor has a distributing body, which may be configured as a conical bod that is rotationally symmetrical about an axis of symmetry. The axis of symmetry may be parallel to an inlet axis. Alternatively, the distributing body can also be configured as an overflow edge.

Abstract: An electrical heating device for heating a liquid medium includes a first heating chamber, a second heating chamber, and an electrical heating assembly which is provided between the first heating chamber and the second heating chamber and which is coupled to the first heating chamber and the second heating chamber in a heat-conducting manner. In order to provide an electrical heating device which can be easily adapted to different heating powers and/or operating voltages, the first heating chamber has a first channel section, and the second heating chamber has a second channel section. The first channel section and/or the second channel section form a flow connection between the two heating chambers which passes through the plane containing the electrical heating assembly and the length of which can be varied in a direction transverse to the plane containing the electrical heating assembly.

Abstract: An electric heating device includes a casing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat to a medium to be heated. At least one heating rib projects from the partition wall in the direction toward the heating chamber and supports, in an insulated manner, at least one PTC element and conductor tracks for energizing the PTC element with different polarities. A control device with a populated control circuit board is provided in the casing. At least one connector casing is provided in the casing and has electrically conductive plugging elements that are electrically connected to the control circuit board. An electric heating device, which is used exclusively for the electrical connection of the plugging elements, is electrically connected to the control circuit board by way of at least one electrical connector.

Abstract: A PTC heating device has a frame surrounding an accommodation space, at least one PTC element accommodated in the accommodation space, and conductor elements, which are connected to the PTC element in an electrically conductive manner and enclose the PTC element between them. Each of the conductor elements is surrounded by a frame segment. The frame segments are welded together to enclose the PTC element in the accommodation space. In the method according to the invention, injection molded plastic frame segments having interacting connection segments are connected to conductor elements. At least one PTC element is then introduced between the frame segments. The frame segments are approached to each other until the connection segments abut against each other. The connection segments are then melted. As a result of this melting, the frame segments are approached further to each other until the conductor elements abut against the PTC element.

Abstract: A PTC heating device has a frame surrounding an accommodation space, at least one PTC element accommodated in the accommodation space, and conductor elements, which are connected to the PTC element in an electrically conductive manner and enclose the PTC element between them. Each of the conductor elements is surrounded by a frame segment. The frame segments are welded together to enclose the PTC element in the accommodation space. In the method according to the invention, injection molded plastic frame segments having interacting connection segments are connected to conductor elements. At least one PTC element is then introduced between the frame segments. The frame segments are approached to each other until the connection segments abut against each other. The connection segments are then melted. As a result of this melting, the frame segments are approached further to each other until the conductor elements abut against the PTC element.

Abstract: An electrical heating device for a motor vehicle includes an at least partially electrically conductive housing having an end face in which a circumferential groove is provided. A lid, formed from sheet metal, seals the housing. An adhesive is introduced into the groove The lid has a circumferential edge which engages in the groove such that the edge of the lid is immersed circumferentially in the adhesive. The inside dimension of the groove is smaller than the wall thickness of the lid.

Abstract: A PTC heating device includes a frame and a heating cell accommodated in the frame. The heating cell includes at least one PTC element made of a ceramic material and contact elements to be assigned different polarity. The PTC element has contact surfaces formed by a metallization. The contact elements are each electrically contacted with one of the contact surfaces. An insulating cured compound is arranged between the outer circumference of the heating cell and the inner circumference of the frame and fixes the heating cell in the frame. An edge, formed by the ceramic material of the PTC element, between the compound and the contact surface. Also disclosed is method of forming PTC heating device according in which the PTC element is fixed to the frame by the electrically insulating compound after the compound is cured.

Abstract: A control device for an electric heating device has a control housing which surrounds a printed circuit board and which accommodates a power switch. The power switch makes contact with the printed circuit board via a contact pin. An alignment element is penetrated by the contact pin is attached to the printed circuit board, and is formed with at least one passage for the contact pin. The passage is aligned with a plug-in slot of the printed circuit board and has a widened opening on its side opposite the printed circuit board. The widened opening tapers in the direction of the passage via a ramp surface. In the manufacturing method, the power switch is approached to the plug-in slot of the printed circuit board and the alignment element. As part of this approach, the contact pin is aligned with the plug-in slot by sliding on the ramp surface.

Abstract: A control device and electric heating device having such a control device are disclosed. The control device has a control housing which surrounds a printed circuit board, which has a partition wall provided with a cooling element, and which accommodates at least one power switch that makes contact with the printed circuit board and that is applied in a heat-conducting manner against the cooling element via a hold-down device. The power switch and the hold-down device are realized in a pre-assembled module connected to the cooling element.