Eberspacher Catem Gmbh & Co. Kg

Ebersp&#xe4;cher Catem Gmbh & Co. Kg

Patrick Kachelhoffer

Kurt Walz

Michael Niederer

Franz Bohlender

Andreas Schwarzer

Ahmad Asafi

Daniela Weber

Daniil Salahub

Sascha Barner

Christof Lausser

Markus Stollhof

An electric heating device includes a housing which forms a receiving pocket in which at least one PTC heating assembly with at least one PTC element received in a positioning frame and strip conductors electrically conductively connected to the PTC element for energizing the PTC element with different polarity is received. In order to compensate for manufacturing tolerances without significantly impairing the heat dissipation from the PTC element, at least one profile part is connected opposite main side surfaces of the PTC element in a heat-conducting manner. Outer main side surfaces of the profile parts opposite the PTC element are connected to an inner surface of the receiving pocket in a heat-conducting manner in each case. The profile parts are connected to the positioning frame.

Electric heating device and method for manufacturing the same

A PTC heating assembly has a plurality of PTC elements and electric strip conductors between which the PTC elements are provided and which are electrically conductively connected to the PTC elements The PTC heating assembly also includes a frame which forms at least one receptacle for the PTC elements and which is provided between the strip conductors. For adjusting the heating power of the PTC heating assembly, at least two strip conductors on at least one side of the PTC elements are electrically conductively connected to PTC elements which deviate from one another.

PTC heating assembly

An electric heating device includes a housing which forms a heating element receptacle and at least one fluid channel. A PTC heating assembly with a press-fit profile is inserted into the heating element receptacle. The press-fit profile forms a PTC receptacle in which at least one PTC element, strip conductors abutting thereon in an electrically conductive manner and, if appropriate, an insulation supporting the strip conductors in an insulated manner against the PTC receptacle, are provided. The housing is formed from an extruded profile and is held under a pretension in the heating element receptacle by deformation projections located between the housing and the press-fit profile. The deformation projections are formed by the housing and/or the press-fit profile.

Electric heating device

An electric heating device comprises a housing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one heating rib protrudes in the direction toward the heating chamber and forms a receiving pocket. A PTC heating device is received in the receiving pocket and includes at least one PTC element and conductor tracks which are electrically connected in the connection chamber for energizing the PTC element with different polarities and which are connected to PTC element r in an electrically conductive manner. A profile member is provided between the PTC heating device and an inner side of the receiving pocket and is connected to the receiving pocket by way of a tongue and groove connection which extends in the direction of insertion of the receiving pocket.

An electric heating device includes an electric control device with a control housing that is in structural unity with a housing of a power section. The power section has a frame forming a heating chamber. At least one PTC heating device with at least one PTC element and conductor elements is provided in the heating chamber. The control housing forms a chamber which is separated from the frame by a partition wall. A heat sink projects from the partition wall into the power section. The electric control device has a printed circuit board and at least one power switch which generates a power loss and which is connected in a heat-conducting manner to a surface of a heat sink. An electrically insulating layer and a spring element, which holds the power switch applied under pretension against the surface of the heat sink, are provided between the power switch and the heat sink.

A heating cell includes a frame made of electrically insulating material. A PTC element, which is received in a frame opening of the frame. Insulating layers accommodate the PTC element between themselves, are connected to the frame, and at least partially cover a respective main side surface of the PTC element exposed in the frame opening and a frame surface defining the frame opening. Abutment projections project beyond the frame surface and at least partially enclose a circumferentially encircling edge of the insulating layer between themselves.

Heating cell and PTC heating device comprising such

An electric heating device, in particular for a motor vehicle, includes a housing which has an inlet and outlet opening for a medium to be heated and which encloses a layered structure. The layered stricture comprises at least one PTC element which is electrically conductively connected to conducting elements leading to connections of different polarity, and heat-emitting elements that are conductively connected on both sides to the PTC element. In order to provide improved heat dissipation, the heat-emitting elements include a panel element that is provided with perforations and that is made of a heat-conducting material.

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.

A heat-generating element for an electric heating device includes a heating element casing which comprises a casing element formed from a ceramic material and a casing mating element formed from a ceramic material. The two casing elements bear against each other in a sealing manner and enclose, in a sealing manner between each other, a PTC element and conductor tracks. The conductor tracks bear, in an electrically conductive manner, against the PTC element and are assigned different polarities for energizing the PTC element. The heating element casing carries contact strips connected in an electrically conductive manner to the associated conductor tracks. At least one of the conductor tracks is formed by an electrically conductive element which is provided with through holes and which, in a height direction of the conductor track, comprises discrete points of support that bear against the PTC element and one of casing element and casing mating element. The present invention further relates to an electric heating device with at least one heater casing with a heat-generating element of the type described here that is arranged in a circulation chamber with a heating element casing joining at least one PTC element and contact strips energizing the PTC element as a structural unit. The heat generating element has the contact strips electrically connected to the PTC element projecting over itself. A partition wall separates the circulation chamber from a connection chamber of the heater casing. The contact strips of the PTC heating element protrude through the partition wall and are exposed and electrically connected.

Heat-generating element and electric heating device containing such

A PTC heating element comprises at least one PTC element and two conductor paths which are assigned to different polarities and which are electrically conductively connected to the PTC element and are provided with connection elements for the electrical connection of the PTC element. The PTC heating element has improved heat discharge due to the provision of an electromagnetic shielding which is formed from a fluid-permeable metal structure and which surrounds the PTC element and the conductor paths.

PTC heating element and electrical heating device with such a PTC heating element

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 protrudes into the heating chamber as a heating rib. A PTC heating device with at least one PTC element and conductor tracks for energizing the PTC element with different polarities, which are electrically conductively connected to the latter and which are electrically connected in the connection chamber, are received in the housing. The PTC element and at least one of the conductor tracks are received in a heater casing. The heater casing is pressed into the receiving pocket subject to plastic deformation of the heater casing and/or the receiving pocket.

Electric heating device and method for its production

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.

Electrical load resistance

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 accommodated in the housing with the conductor 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.

Electric heating device and method for its manufacture

A PTC heating element is provided that includes including a PTC heating element strip conductors via which the PTC element is powered and at least one of which is insulated on an outer surface with an electrical insulation layer. In order to provide improved insulation while maintaining adequate heat transfer from the PTC element to the heat-emitting surface through the electrical insulation layer, the electrical insulation layer comprises a film and an electrically insulating mass of good thermal conductivity applied to the film. Also provided is an electric heating device for an automotive vehicle that is provided with at least one PTC heating element of such a type.

PTC heating element and electric heating device for an automotive vehicle comprising such a PTC heating element

A PTC heating element includes at least one PTC element provided between strip conductors. To reduce the air gap and creep distance between the two strip conductors an insulating mass seals at least one of the strip conductors and/or the PTC element over the whole circumference. In the electric heating device according to the invention, such a PTC heating element lies in an electrically conducting manner against heat-emitting surfaces of the heating device. According to the method of the invention for producing an electric heating device, the strip conductors are glued to the PTC element for producing a PTC heating cell. The PTC heating cell is then sealed between two electrical insulation layers by an insulating mass which is applied circumferentially around at least one of the strip conductors and/or the PTC element.

Growing community of inventors

Seebach, France

Patrick Kachelhoffer