Patent application number | Description | Published |
20090020619 | Electrical Auxiliary Heater - An auxiliary heater for a motor vehicle has a layer structure comprising a heat generating element with at least one PTC heating element and printed conductors contacting the PTC heating element on both sides for powering the PTC heating element and at least one heat dissipating element, connected for thermal conduction with the heat generating element. A housing accommodates the layer structure as well as contact lugs for the connection of the auxiliary heater to a power source. For providing the best possible and simplist connection to a power source via a plug element, and with regard to the economical manufacture of the auxiliary heater, the contact lugs are formed by stamped sheet metal pieces which are electrically connected to selected printed conductors. | 01-22-2009 |
20090026189 | Electrical Heating Device - An electrical heating device includes a flat heating block, which is held in a housing forming oppositely situated frame openings and which comprises parallel layers of heat dissipating and heat generating elements. The heat generating elements on the face side have fitting elements projecting beyond the heating block, and fitting element receptacles assigned to these fitting elements are formed on the housing. The fitting elements and the assigned fitting element receptacles of different heat generating elements are formed such that the heat generating elements cannot be inserted at just any random place in the housing. | 01-29-2009 |
20090026191 | Method of Manufacturing an Electric Heating Device and Electric Heating Devices - The present invention relates to a method of manufacturing an electric heating device, comprising a housing in which a heating block is held with the pretensioning force of at least one spring element located approximately at the same level as the heating block in its post assembly position and which defines opposite housing apertures between which the heating block is exposed, wherein the heating block is introduced into a housing part and the heating block is enclosed in the housing by another housing part. The spring element is brought into its assembled position and pretensioned when the housing is being closed to enclose the heating block. The present invention further relates to an electric heating device which can be employed in the method according to the invention and which can be relatively easily manufactured by injection molding. | 01-29-2009 |
20090026194 | Method of Manufacturing an Electric Heating Device and Electric Heating Devices - An electric heater, comprises a heating block held in a housing and including parallel layers of heat-emitting and heat generating elements. A grid arrangement covers the respective frame apertures in the housing and reinforces the housing. First struts of the grid arrangement, extending at right angles with respect to the layers, are assigned to the housing, and second struts extending parallel with respect to the layers are defined by the heating block. Moreover, a heat generating element of an electric heater, comprises a position frame made of an insulating material and defining receptacles arranged side by side each for at least one PTC heating element. The receptacles are arranged between conductor paths against which the PTC heating elements are placed in an electrically conductive manner. | 01-29-2009 |
20100044360 | HEAT GENERATING ELEMENT AND ELECTRIC AUXILIARY HEATER FOR A MOTOR VEHICLE WITH HEAT GENERATING ELEMENT - A heat generating element for heating air in an electric auxiliary heater of a motor vehicle includes at least one PTC heating element and an insulating housing surrounding the PTC heating element as well as electric strip conductors lying against the PTC heating element at opposite sides. The housing is embodied in two parts with a housing shell element and a shell counter element which are lying against each other with the interposition of a sealing strip and sealingly surround the at least one PTC heating element. The present invention further relates to an electric auxiliary heater for a motor vehicle with a layer composition held in a frame, comprising the at least one heat generating element. | 02-25-2010 |
20100243638 | ELECTRIC HEATING DEVICE FOR A MOTOR VEHICLE - An electric heating device for a motor vehicle includes at least one PTC heating element with contact metal sheets extending substantially parallel to one another and accommodating between them at least one PTC element, and a printed circuit board. The printed circuit board has formed therein at least one opening through which a contact tongue projects. The contact tongue serves to establish an electric connection between the PTC heating element and the printed circuit board. For providing an electric heating device having a compact structural design, a punched-out connection piece connected to a conductor path of the printed circuit board in an electrically conductive manner. The connection piece defines a fixing portion which rests on the printed circuit board, and also defines and at least one spring tongue projecting into the opening. | 09-30-2010 |
20110068090 | ELECTRICAL HEATING DEVICE - An electrical heating device, which includes a housing, in which at least one heat generating element with at least one PTC element and electrical strip conductors abutting oppositely situated lateral faces of the PTC element and a plurality of heat dissipating elements arranged in parallel layers are accommodated, which are held abutted on oppositely situated sides of the heat generating element. An electrical heating device according to the invention and which fulfils the practical requirements, in particular with high voltage operation in an improved manner has at least one heat dissipating element which is situated, with the intermediate positioning of an electrically insulating layer, on the assigned heat generating element and can be electrically connected to a ground potential. | 03-24-2011 |
20110068097 | ELECTRICAL HEATING DEVICE AND METHOD FOR THE PRODUCTION THEREOF - An electrical heating device includes an open housing in which a layer structure is held under tension. The layer structure includes at least one radiator element and at least one heat emitting element with at least one PTC heating element. The layer structure further includes at least one spring element holding the layer structure in the housing under tension. The spring element is provided adjacent to a spring counter element. Spring tongues, formed on the spring element, interact with matching receptacles on the spring counter element. Displacement of the spring element in a direction essentially parallel to the planes of the layer structure stresses the layer structure within the housing. A method of assembling an electrical heating device is also disclosed. | 03-24-2011 |
20110068099 | ELECTRICAL HEATING DEVICE - An electrical heating device, includes a housing in which at least one heat generating element with at least one PTC element and electrical strip conductors abutting oppositely situated lateral faces of the PTC element and a plurality of heat dissipating elements arranged in parallel layers are accommodated. The heat dissipating elements are held abutted on oppositely situated sides of the heat generating element, with the intermediate positioning of an electrical insulation. In order to be capable of improved high voltage operation, at least one conducting element electrically connects together a plurality of heat dissipating elements. | 03-24-2011 |
20120085742 | ELECTRICAL HEATING DEVICE - An electrical heating device includes a housing, which encloses a circulation chamber through which a medium can flow and into which heating ribs extend essentially parallel to one another. Each of the ribs has a U-shaped recess which opens into a uniform connecting chamber, which is separated from the circulation chamber by a partition wall provided in the region of the open ends of the U-shaped recesses, and which accommodates at least one PTC heating element that abuts oppositely situated inner sides of the U-shaped recess in heat-conducting contact. The heating ribs protrude inwards alternately from the oppositely situated inner sides of the housing. A flow passage of a meander-type flow channel is formed in the housing between the free ends of the heating ribs and the adjacent inner wall of the housing. The flow passage is closed off by a covering element on the side oppositely situated to the partition wall. | 04-12-2012 |
20120085743 | Electrical Heating Device - An electrical heating device comprises a housing which encloses a circulation chamber through which a medium can flow, and into which heating ribs protrude. Each of the heating ribs has a U-shaped recess which open into a uniform connecting chamber, which is separated from the circulation chamber by a partition wall provided in the region of the open ends of the U-shaped recesses, and which accommodates at least one PTC heating element that abuts oppositely situated inner sides of the U-shaped recess in heat-conducting contact. A housing cover bears a pump and forms a pump channel. The pump channel opens into an inlet opening of the pump, which is formed by a pump housing. | 04-12-2012 |
20120087642 | Electrical Heating Device and Method for the Production Thereof - An electrical heating device includes a housing which encloses a circulation chamber through which a medium can flow and in which heating ribs protrude. The heating ribs are in thermally conducting contact with at least one PTC heating element. A control device is provided in a constructional unit with at least one assembled conductor board. The constructional unit is accommodated in a control housing that comprises a control housing cover and a control housing frame. The control housing frame circumferentially surrounds the assembled conductor board and is formed from a metallic material. During the installation of the control housing on the housing, a control element, producing a power loss, is held by the assembled conductor board and is placed in abutment with a cooling element formed on the housing. | 04-12-2012 |
20120248091 | ELECTRICAL HEATING DEVICE WITH A PLATE ELEMENT COMPRISING CONDUCTIVE PATHS AND METHOD FOR THE MANUFACTURE OF A PLATE ELEMENT OF THIS NATURE - An electrical heating includes a plurality of electrical heating elements which are held by a housing and which abut heat conducting surfaces over which a medium to be heated flows. The electrical heating elements comprise contact lugs, arranged essentially at the same height, that are connected through a plate element. The plate element includes conductive paths and contact lug receptacles for the contact lugs. The plate element may include a carrier plate of non-conducting material and a stamped out metal plate that are joined together to form one unit. A method of manufacturing a plate element includes manufacturing the carrier plate by injection moulding and subjecting a metal plate to stamping operations to form area elements which are joined together by connecting ridges and in which the contact lug receptacles are located. The carrier plate and the metal plate are then joined, and the connecting ridges are then parted. | 10-04-2012 |
20130000108 | ELECTRICAL HEATING DEVICE AND METHOD FOR THE PRODUCTION THEREOF - A method of assembling an electrical heating device is provided. The electrical heating device includes a housing which encloses a circulation chamber through which a medium can flow and in which heating ribs protrude. The heating ribs are in thermally conducting contact with at least one PTC heating element. A control device is provided in a constructional unit with at least one assembled conductor board. The constructional unit is accommodated in a control housing that comprises a control housing cover and a control housing frame. The control housing frame circumferentially surrounds the assembled conductor board and is formed from a metallic material. The method includes installing the control housing on the housing such that a control element, producing a power loss, is held by the assembled conductor board and is placed in abutment with a cooling element formed on the housing. | 01-03-2013 |
20130161307 | HEAT GENERATING ELEMENT - A heat generating element for an electrical heating device of a motor vehicle includes a positional frame which forms a receptacle in which a PTC element is accommodated, and two contact plates abutting on oppositely situated sides of the PTC element. A heat generating element has a sheet metal cover that is connected to the positional frame. Also provided are a frame, which has oppositely situated side openings for the passage of a medium to be heated, and a layer structure, which is arranged in the frame and which comprises layers of corrugated-rib and heat generating elements, such that the heat generating element has at least one PTC element arranged between two parallel contact plates. The electrical heating device is protected against EMC via sheet metal covers that are arranged on both sides of the heat generating element and between the corrugated-rib elements and the contact plates. | 06-27-2013 |
20130161308 | ELECTRICAL HEATING DEVICE, PARTICULARLY FOR A MOTOR VEHICLE - An electrical heating device for a motor vehicle includes a frame that has openings formed on oppositely situated sides for the passage of a medium to be heated, a layer structure, arranged in the frame, and a connecting housing. The layer structure comprises layers of corrugated-rib elements and heat generating elements, and each heat generating element has at least one PTC element arranged between parallel contact plates. At least one power dissipation generating power switch is provided in the connecting housing. A heat sink lies exposed on the outside of the connecting housing. Improved and adequate cooling of the electrical heating device having the power switch is created as a result of the insertion of the heat sink into the connecting housing in a sealing manner. | 06-27-2013 |
20130161316 | HEAT GENERATING ELEMENT - A heat generating element for an electrical heating device of a motor vehicle has a positional frame, which forms a receptacle in which at least one PTC element is accommodated, and additionally has contact plates abutting on two oppositely situated sides of the PTC element. With a view to providing well-insulated support of the PTC element, several supporting points are arranged in circumferential direction of the receptacle. | 06-27-2013 |
20130163969 | ELECTRICAL HEATING DEVICE AND SUITABLE FRAME - An electrical heating device includes a frame and a layer structure arranged in the frame and comprising layers of corrugated ribs and PTC-based heat generating elements. The electrical heating device includes at least two corrugated-rib elements. The frame has two frame elements forming openings and at least one frame intermediate element arranged between them. A frame, formed solely by the frame elements, forms an accommodation space extending in the passage direction of the medium to be heated, which is appropriately formed for the accommodation of a layer structure with a level of corrugated ribs and heat generating elements. A frame, formed by the frame elements and the frame intermediate element, forms an accommodation space extending in the passage direction of the medium to be heated, which is formed for the accommodation of a layer structure with several levels of corrugated ribs and heat generating elements. | 06-27-2013 |
20130233845 | HEAT GENERATING ELEMENT - A heat generating element includes at least one PTC element, contact sheets flatly lying against the PTC element on either side, a housing which forms at least one opening for receiving the at least one PTC element and which has a terminal side at which contact tongues allocated to the contact sheets are exposed. The device also has a wedge element with a broader and a narrower end face which are connected to each other via first and second wedge surfaces, the first wedge surface extending in parallel to one of the contact sheets and lying against it with a slide plate being inserted, and the second wedge surface being exposed at the outer side of the housing. A heat generating element less susceptible to damages during assembly has a slide plate connected to the housing. | 09-12-2013 |
20140096388 | ELECTRICAL HEATING DEVICE WITH A PLATE ELEMENT COMPRISING CONDUCTIVE PATHS AND METHOD FOR THE MANUFACTURE OF A PLATE ELEMENT OF THIS NATURE - An electrical heating includes a plurality of electrical heating elements which are held by a housing and which abut heat conducting surfaces over which a medium to be heated flows. The electrical heating elements comprise contact lugs, arranged essentially at the same height, that are connected through a plate element. The plate element includes conductive paths and contact lug receptacles for the contact lugs. The plate element may include a carrier plate of non-conducting material and a stamped out metal plate that are joined together to form one unit. A method of manufacturing a plate element of this nature includes manufacturing the carrier plate by injection moulding and subjecting a metal plate to stamping operations to form area elements which are joined together by connecting ridges and in which the contact lug receptacles are located. The carrier plate and the metal plate are then joined, and the connecting ridges are then parted. | 04-10-2014 |