EP1768457B1 - Element chauffant d'un dispositif de chauffage - Google Patents

Element chauffant d'un dispositif de chauffage Download PDF

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Publication number
EP1768457B1
EP1768457B1 EP05020752A EP05020752A EP1768457B1 EP 1768457 B1 EP1768457 B1 EP 1768457B1 EP 05020752 A EP05020752 A EP 05020752A EP 05020752 A EP05020752 A EP 05020752A EP 1768457 B1 EP1768457 B1 EP 1768457B1
Authority
EP
European Patent Office
Prior art keywords
heat
frame
generating element
positioning frame
insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP05020752A
Other languages
German (de)
English (en)
Other versions
EP1768457A1 (fr
Inventor
Franz Bohlender
Michael Zeyen
Kurt Walz
Michael Niederer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Catem GmbH and Co KG
Original Assignee
Catem GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Catem GmbH and Co KG filed Critical Catem GmbH and Co KG
Priority to EP05020752A priority Critical patent/EP1768457B1/fr
Priority to DE502005004134T priority patent/DE502005004134D1/de
Priority to ES05020752T priority patent/ES2303167T3/es
Priority to EP06017063A priority patent/EP1768459B1/fr
Priority to ES06017063T priority patent/ES2303712T3/es
Priority to DE502006000793T priority patent/DE502006000793D1/de
Priority to JP2006257828A priority patent/JP4170355B2/ja
Priority to JP2006257826A priority patent/JP4385044B2/ja
Priority to US11/534,387 priority patent/US7667166B2/en
Priority to US11/534,470 priority patent/US7777161B2/en
Priority to KR1020060092970A priority patent/KR100837333B1/ko
Priority to CN2006101397786A priority patent/CN1937860B/zh
Priority to KR1020060093006A priority patent/KR100850476B1/ko
Publication of EP1768457A1 publication Critical patent/EP1768457A1/fr
Application granted granted Critical
Publication of EP1768457B1 publication Critical patent/EP1768457B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • F24H3/0447—Forms of the electrode terminals, e.g. tongues or clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0464—Two-piece frames, e.g. two-shell frames, also including frames as a central body with two covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0476—Means for putting the electric heaters in the frame under strain, e.g. with springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/081—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using electric energy supply
    • F24H3/082—The tubes being an electrical isolator containing the heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the present invention relates to a heat-generating element of a heater for air heating, comprising at least one PTC element and voltage applied to opposite side surfaces of the PTC element electrical conductor tracks.
  • a heat-generating element is, for example, from the date of the present applicant. EP 1 061 776 known.
  • the heat-generating element is used in particular in a heater for a motor vehicle and comprises a plurality of successively arranged in a row PTC elements which are energized via parallel to each other, flat applied to opposite sides of the PTC elements electrical conductor tracks.
  • the conductor tracks are usually formed by parallel metal strips.
  • the heat-generating elements thus formed are used in a heating device for air heating in a motor vehicle, which comprises a plurality of layers of heat-generating elements, abut on the opposite sides of heat-emitting elements. These heat-emitting elements are applied via a holding device in relatively good heat-transfer contact to the heat-generating elements.
  • a holding device of the heating device is formed by a frame in which a plurality of mutually parallel layers of heat-generating and heat-emitting elements are spring-loaded.
  • the heat generating element is formed by a plurality of in a row in a plane successively arranged PTC elements, which are also referred to as ceramic elements or PTC thermistors, which are energized on opposite side surfaces by voltage applied to these tracks.
  • PTC elements which are also referred to as ceramic elements or PTC thermistors, which are energized on opposite side surfaces by voltage applied to these tracks.
  • One of the tracks is formed by a circumferentially closed profile.
  • the heat-emitting elements are characterized by in formed a plurality of parallel layers slats extending at right angles to the circumferentially closed metal profile.
  • a plurality of circumferentially closed metal profiles formed in the manner described above are provided, which are arranged parallel to each other. The lamellae partially extend between the circumferentially closed profiles and partially protrude beyond them.
  • the electrical traces must be in good electrical contact with the PTC elements. Otherwise, there is the problem of an increased contact resistance, which may result in particular in the use of heat-generating elements in Zuheizem for motor vehicles because of the high currents that a local overheating occurs. By this thermal event, the heat-generating element can be damaged.
  • the PTC elements are self-regulating resistance heaters that emit less heat at elevated temperature, so local overheating can interfere with the self-regulating properties of the PTC elements.
  • vapors or gases can develop at high temperatures in the region of an auxiliary heater, which can lead to an immediate endangerment of persons located in the passenger compartment.
  • the PTC elements are usually arranged in a position frame, which can be used as a flat component in the substantially in the plane of the PTC elements.
  • the position frame is used for positionally accurate positioning of the PTC elements during assembly of the heat-generating element, possibly also the support of the PTC elements in permanent operation.
  • the position frame is made of plastic and as an injection molded part and thus has certain insulating properties.
  • a heat-generating element is known in which the PTC element is provided with interposition of interconnects of different polarity between aluminum oxide layers, which are supported on the edge of an injection-molded frame, are passed through the electrical connection elements, which secured by molding with the plastic frame are. Also in this prior art, there is the problem of leakage currents between the connection elements of different polarity over the surface of the plastic frame.
  • the previously known from this prior art heat-generating element is not suitable for operation at relatively high operating voltages.
  • a heat-generating element of a heater for air heating, and a corresponding heater to be provided which provide increased security.
  • the present invention aims to increase the safety with regard to a possible electrical flashover.
  • the present invention proposes a heat-generating element having the features of claim 1.
  • the at least one PTC element is supported in a highly insulating manner in the position frame.
  • a highly insulating support of the at least one PTC element in the context of the invention is provided by an insulation, the higher has electrical breakdown strength, as the usually applied to the PTC element, formed from an electrically nonspecific plastic material position frame.
  • the aim is a high electrical breakdown strength of the material forming the position frame and / or a sufficient insulation of the at least one PTC element with respect to the position frame.
  • the highly insulating support of the at least one PTC element in the position frame is carried out in particular with the aim of high tracking resistance.
  • the PTC element should be secured against leakage current by highly insulating support in the position frame with a CTI value of at least 400, preferably 600. If the position frame is made of a plastic, this should be temperature resistant. Conceivable is a production of the position frame made of polyamide. In view of a compact design of the heat-generating element and with regard to possible operating voltages of about 500 V, a CTI value of at least 600 should be achieved.
  • the highly insulating support of the PTC element can be done in various ways, which are explained in detail below:
  • the position frame itself from a highly insulating material, such as an electrically non-conductive ceramic or a high-quality plastic, such as polyurethane, silicone or a be formed highly insulating elastomer.
  • the dielectric strength of the material forming the position frame immediately adjacent to the PTC element should be at least 2 kV / mm.
  • the electrically highly effective insulating support of the PTC elements takes place in that an insulating gap is provided between the PTC element and the frame opening surrounding the surrounding material of the positioning frame.
  • the insulating gap may be an air gap that is kept between the PTC element (s) and the frame opening material.
  • care must be taken to ensure that the PTC element is sufficiently spaced from the position frame with a sufficient distance preventing an electrical flashover on the position frame.
  • This positioning can be done in particular by an insulating layer, which keeps the one or more PTC element (s) in a predetermined position, for example, by the or the PTC element (s) indirectly or directly connected to the insulating layer, in particular glued are.
  • the insulating layer is also secured against position relative to the position frame.
  • the bonding of the aforementioned elements is preferable from the viewpoint of easier manufacture and also from the viewpoint of sealing the current-carrying parts from the environment that can be realized by an adhesive layer
  • the PTC element or elements FOG. e
  • the insulating properties of this insulating layer are preferably chosen so that the insulating layer in the transverse direction of the layer structure ensures a dielectric strength of at least 2000 V.
  • one or more spacing means are provided in the insulating gap, which ensure that the necessary to prevent electrical flashover insulating gap is securely maintained. It goes without saying that this spacing means has a better electrical insulation effect than the position frame.
  • the spacer means may consist of a more electrically insulating material such as a ceramic.
  • the position frame is formed by an insulating strip, which lines the edge surrounding the frame opening circumferentially.
  • the insulating strip is preferably held in a form-fitting manner, in particular in the form of a jacket which surrounds the front side and the jacket of this adjacent, opposite upper and lower sides.
  • This sheath forms a receiving groove into which the inner edge region of the position frame in the region of the frame opening receives in the manner of a spring in it.
  • the spacer means may be slid on this inner edge region in the manner of a tongue and groove connection.
  • the spacing means is injection-molded as a second component in the plastic injection molding manufacturing of the position frame together with the spacer means at the edge region.
  • the PTC elements are ceramic elements that are manufactured as sintered parts, and therefore inevitably subject to certain variations in their dimensions. Accordingly, it is common to provide the conductor tracks which are formed on the opposite side surfaces of the PTC elements and which are regularly formed in the form of contact plates, with a width greater than the PTC elements. In a cross-sectional view of an elongated heat-generating element, the electrical traces sometimes overhang the PTC elements.
  • the electrical conductors can be substantially parallel to extend the top and bottom of the position frame and in view of avoiding electrical flashover in this area is proposed according to a further preferred embodiment of the present invention that continues there, between the electrical traces and the material of the position frame, the insulating gap. While the insulating gap according to the main aspect of the present invention lies in the bearing plane of the PTC elements and extends substantially perpendicular to the extension of the position frame, the insulating gap continued according to the preferred embodiment is parallel to the plane defined by the position frame. Also in the preferred embodiment of the insulating gap can be realized as an air gap.
  • the configuration presented above in which the spacing means is connected to the position frame as a tongue-and-groove joint, is preferably selected with regard to the insulating properties of the spacing means such that the insulating spacing means extends beyond the outer edge of the electrical conductor tracks .
  • the spacer may be provided in this case as an insulating pad member.
  • the padding may be provided for supporting the PTC element on the inner edge of the frame opening and / or for supporting the electrical conductor tracks or, where appropriate, the insulating layers which cover these on the outside and which adjoin them.
  • the insulating spacer means is formed of a hard ceramic material and for cushioning the local soft support of the PTC elements and / or the electrical conductor tracks and / or insulating insulating elements between these said components and the positioning frame are provided.
  • the insulating spacer means has cushioning properties and thus the spacer means and the cushion member are formed by the same component.
  • the PTC element and the electrical conductor tracks are surrounded in their entirety by an electrically non-conductive encapsulation comprising the abovementioned insulating layer.
  • the insulating encapsulation is formed on the top and bottom by the insulating layer.
  • the opposite inner sides of the insulating layer are, for example, by elastically high-quality insulating materials, such as silicone or polyurethane adhesive one or more parts connected to each other.
  • These bonding adhesives can be between the insulating layers are introduced and in this case connect the layer structure consisting of outer insulating layers, adjacent thereto electrical conductor tracks and interposed PTC element to form a unit in which the cured adhesive adhesive forms the position frame.
  • the insulating layer covers the current-carrying parts on both sides and sealingly connects to the edges of the position frame.
  • an electrically non-conductive encapsulation in the circumferential direction of the heat-generating element is formed.
  • the energized parts i. the electrical conductors and the interposed PTC elements, in the middle.
  • This layer structure is bounded on top and bottom by the insulating layer. This in turn bears with its outer edges each sealingly on the position of the plastic frame formed.
  • moisture or contamination which is entrained by the heat-generating element inflowing air, can reach the live parts.
  • only the current-carrying parts, especially the contact sheets, can project beyond the insulating layer on one or both end sides of the heat-generating element.
  • the electrical conductor tracks are regularly added to the holding device of the heater and by the structural elements of this holding device, the current-carrying parts can be sealed against the incoming air.
  • the electrically non-conductive encapsulation is preferably created by the fact that the sections of the insulating layer which project beyond the electrical trace are sealed with the interposition of a sealing element in relation to the position frame.
  • the sealing element is preferably formed of an insulating material, for example an elastic plastic.
  • the sealing element is formed by a plastic adhesive connecting the position frame and the insulating layer, so that not only a circumferential encapsulation of the current-carrying parts is effected, but also the current-carrying parts together with the insulating layers attached thereto together with the position frame to a structural Unit are connected.
  • the position frame can be made of an electrically high-quality insulating material and that completely dispenses with the use of a conventional thermoplastic material.
  • the positioning frame may be formed by a uniform silicone component. It is also possible to form the positioning frame by injecting a highly insulating, preferably adhesive sealing compound between the adjacent to the opposite side surfaces of the PTC elements layers. In such a case, the PTC elements can be positioned with respect to the remaining layers of the layer structure for assembly purposes and finally fixed in position by injecting the highly insulating mass.
  • the position frame is not used in such a case as a positioning aid during assembly, but only to ensure a predetermined position of the PTC elements or the permanent operation of the heat-emitting element.
  • the position frame is formed as an injection-molded component from a high-quality electrical insulation material and used as a positioning aid during assembly, by introducing an adhesive between the opposing and adjacent to the PTC element layers these together with the PTC elements and the silicone frame to a structural unit to be glued. Even in such a case can be dispensed with a conventional Spitzg cordteil from a conventional thermoplastic for forming the position frame.
  • the electrical conductor track is preferably formed by a contact plate, which projects beyond the at least one PTC element. At least one electrical contacting point in the form of a plug element is formed by the contact plate on the side projecting beyond the at least one PTC element, through which the electrical connection of the heat-generating element to a power supply can take place. Accordingly, the contact plate preferably projects beyond the PTC element at least on the end face of the heat-generating element. However, it is also possible to design the contact plate such that it projects beyond the PTC element in the width direction.
  • the current-carrying contact sheets are used in particular to hold the PTC elements within the frame opening formed by the positioning frame. Accordingly, a portion of the support frame extends between the opposing projecting ends of the contact sheets. In other words, the holding frame is also provided between the opposing contact sheets, so that the current-carrying parts of the heat-generating element are held within certain limits in the position frame in the height direction. Compliance with the Isolierspaltes between the contact plates and the material of the position frame can be effected, for example, by an insulating spacer means which is provided in the insulating gap between the PTC element projecting edge of the contact plate and the material of the position frame.
  • this spacing means extends in the transverse direction of the positioning frame to the outer end of the contact sheet.
  • the insulating spacer means is preferably formed by a plastic material which has a higher electrical breakdown strength than the material of the positional frame (e.g., silicone, polyurethane).
  • Case designs are conceivable in which the PTC element or elements are held loosely in the frame opening between the two contact plates. This case design is to be taken in particular if, for reasons of good electrical contact between the PTC elements and the contact plate is dispensed with an adhesive bond between the two parts.
  • the insulating spacer means to surround this frame opening circumferentially Edge is formed extending. Accordingly, the insulating spacer means is located in the plane receiving the PTC elements and immediately adjacent to an end face of the PTC element opposite the position frame.
  • the sealing element extends at least in the longitudinal direction of the position frame.
  • a Dichtstoffbegrenzungsrand which preferably extends continuously in the longitudinal direction of the positioning frame and is formed by the position frame.
  • This sealant-limiting edge extends in the height direction of the positioning frame, that is, in a direction which is aligned both perpendicular to the transverse direction of the positioning frame and perpendicular to the longitudinal direction of the positioning frame.
  • the Dichtstoffbegrenzungsrand should preferably extend over the entire longitudinal extent of the position frame, ie the sealing element on the opposite longitudinal sides of the position frame summarize.
  • the insulating layer extending in the height direction preferably has a boundary edge, which extends in the height direction in any case up to the level in which the insulating layer is located. Between opposite boundary edges, the respective insulating layers are accordingly provided. In this case, the frontal end of the insulating layer is arranged at a distance from the Isolier Anlagenbegrenzungsr skilledn with a view to the highest possible security against electrical breakdown.
  • the insulating layer is not actually an electrically conductive component, it can certainly be tolerated with regard to a rational production that the insulating layer directly contacts the boundary edge on one side.
  • the boundary edges are mainly used for the exact positioning of the insulating layer in the width direction of the position frame.
  • the positioning frame preferably also extends in the height direction, i. in a direction transverse to the bearing plane of the PTC element extending boundary webs. These boundary webs project beyond the boundary edges and serve to position a heat-emitting element adjacent to the heat-generating element. This lies with the interposition of the insulating layer on the electrical conductor.
  • the boundary edges and the boundary webs of the positioning of the insulating layer or the heat-emitting elements in the transverse direction of the positron frame will serve, also with regard to the most accurate positioning of the various components of the heat-generating element in the production thereof according to a further preferred embodiment proposed on the positioning frame at least one transverse to the bearing plane of the PTC element, ie extending in the vertical direction Fixiersteg to provide which serves to fix the insulating layer in the longitudinal direction of the position frame. Due to the Isolier Anlagennningsr selected and the Fixiersteges the insulating layer is fixed during assembly relative to the position frame. The insulating layer is then reliably arranged within predetermined limits in the transverse or longitudinal direction.
  • the position frame further comprises in the height direction, i. transverse to the bearing plane of the PTC element extending pin.
  • Each of the pins is precisely in engagement in a recess which is recessed in the contact plate.
  • a thickening is formed above the contact plate, through which the contact plate is secured to the position frame.
  • the contact plate is accurately positioned by the positive connection of pin and recess. The thickening secures the contact plate with respect to the position frame form-fitting.
  • the insulating layer is preferably adhered to the unit so formed, wherein the adhesive connection is preferably between the position frame and the insulating layer.
  • a preassembled structural unit comprising the positional frame, the at least one PTC element and the contact sheets and the insulating layers can be formed.
  • the contact plate forms on one of its end faces a plug connection which is formed by sheet metal processing as a one-part element on the contact plate and has been reshaped such that it extends transversely to the plane of the sheet.
  • This connector is located at the mentioned development in a slot which is recessed on the positioning frame and opens outwards to an end face of the position frame.
  • the plug connection is formed by sheet metal processing of the contact plate in any case at its end face.
  • the male terminal preferably extends parallel to the remainder of the contact sheet, but is bent over in a plane spaced outwardly from the plane containing the contact sheet. This preferred embodiment is particularly suitable for such situations in which the two contact plates on the same end side form electrical connection elements that should be widely spaced from each other with regard to the most secure insulation and space requirements of plug receptacles for the connections.
  • the position frame is formed of an electrically highly insulating material and this is a plastic, for example silicone or polyurethane
  • one of the electrical conductor elements which are preferably formed in the form of a sheet, inserted into the required for injection molding production of the positioning frame injection mold and by encapsulation connected to the plastic material of the position frame.
  • the mold cavity is designed in such a way that, during injection molding of the positioning frame, one or more frame openings are recessed into which the PTC element (s) can be inserted.
  • About form-fitting positioning parts eg pin connection
  • This is preferably glued to the subunit of the heat-generating element produced by encapsulation or welded.
  • the essential components of the heat-generating element are produced.
  • the electrical conductor tracks can be exposed on the front side of the heat-generating element.
  • an insulating layer is then preferably applied, in particular adhesively bonded, to the outside insulation of the electrical conductor tracks.
  • this preassembled structural unit produced in this way is held under pretension in a frame, then the incompressible elements of each layer, ie the insulating layers, the electrical baffles and the PTC elements lie flat against each other, whereas the soft plastic material forming the position frame (eg electrically high-quality Silicone) evades, but nevertheless the current-carrying parts of the heat-generating element circumferentially seals.
  • the position frame eg electrically high-quality Silicone
  • the further developments described above preferably have a separate sealing element.
  • the sealing element can just as well be formed integrally with the position frame.
  • This realization inevitably arises when the insulating layer is in any case connected on one side by encapsulation with the position frame.
  • a sealing member may be formed in an encapsulation of the insulating layer on one side of the position frame on the opposite side by means of injection molding, against which the insulating layer rests on the other side of the position frame. It can also integrally formed on opposite sides of the position frame sealing elements by injection molding with the position frame and the insulating layers are applied to this.
  • the sealing member will not develop the adhesive force sufficiently connecting the insulating layer to the position frame.
  • the insulating layer can thus be glued or otherwise connected to the position frame. It is intended in particular to clipping the insulating layer on the position frame, either by clip elements, which are arranged on the position frame, or by means of detent means for the insulating layer, which are preferably integrally formed on the position frame and in particular at least at the longitudinal edges of the position frame continuously or over the entire length of the position frame in discrete sections are formed distributed.
  • Such a locking means may additionally be formed as a lateral fixing and mounting aid for voltage applied to the insulating heat-emitting element.
  • the locking means may be formed as a separate component relative to the position frame.
  • the present invention further provides a heater under protection, which makes use of the heat generating element according to the invention and accordingly can be operated at high voltages.
  • the heater has a plurality of heat-emitting elements arranged in parallel layers, which abut opposite sides of a heat-generating element.
  • the heat-generating and heat-emitting elements are held in a frame which is substantially planar and whose width substantially corresponds to the width of the heat-emitting and / or heat-generating elements.
  • Via the frame spring voltages are generated and / or introduced into the layer structure.
  • the spring may be integrated in a frame spar, such as the EP 0 350 528 can be seen.
  • the spring preload can also be applied by elastic connections of frame members extending at right angles.
  • a plurality of heat-generating elements are provided in the layer structure, on whose upper and lower sides in each case a heat-emitting element is applied.
  • the heating device according to the invention is further developed by the development discussed above with reference to the heat-generating element.
  • Fig. 1 is a side perspective view of the essential parts of an embodiment of a heat generating element in an exploded view.
  • the heat generating element has a molded plastic injection frame 2, whose central longitudinal axis forms a plane of symmetry of the heat-generating element. This is formed essentially mirror-symmetrical and has on each side of the positioning frame 2 initially provided contact plates 4, which receive between them in the position frame 2 recorded PTC elements 6.
  • On the outside of the contact sheets 4 is a two-layer insulating layer 8, comprising an outer insulating film 10 and an inner, directly adjacent to the contact plate 4 ceramic plate 12.
  • the ceramic plate 12 is a relatively thin alumina plate, which has a very good dielectric strength of about 28 kV / mm and a good thermal conductivity of more than 24 W / (m K) provides.
  • the plastic film 10 is presently formed by a Polymidfolie having a good thermal conductivity of about 0.45 W / (m K) and a dielectric strength of 4 kV / mm.
  • plastic film 10 and the ceramic plate 12 Between the plastic film 10 and the ceramic plate 12 is a few microns thick wax layer whose melting point is tuned with respect to the operating temperature of the heat-generating element, in such a way that the wax melts at operating temperature and between the plastic film and the ceramic plate 12, the abut each other under compressive stress, so distributed that a compensating film is created, which promotes good heat transfer between the two parts 10, 12 of the insulating layer 8.
  • the combination of plastic film 10 and ceramic plate 12 leads to an insulating part 8, which has good electrical properties and thermal conduction properties and in particular against breakdown voltages of up to 2000 V, but which also shows the necessary strength at the same time.
  • any voltage spikes which can be generated in particular when applied by pressure against the heat-generating element heat-emitting elements, degraded and homogenized.
  • the arranged between the two parts 10, 12 of the insulating wax, optionally also an additional there provided and both parts 10, 12 interconnecting adhesive favors this degradation of voltage spikes. Accordingly, even at higher compressive stresses, which hold a layer structure of heat-generating and heat-emitting elements under bias, not the risk that breaks the relatively brittle ceramic layer.
  • the insulating layer 8 is preferably glued to the outside of the contact plate 4. This is located approximately in the middle of the insulating layer 8 and is smaller in width as the insulating layer 8 is formed. However, the respective contact plate 4 projects beyond the insulating layer 8 at the end faces. The contact plate 4 is at this the insulating layer 8 superior ends initially significantly reduced in width. To the in Fig. 1 Right end, the contact plate 4 has a free-cutting with respect to the width of the contact plate 4 tapered mounting web 14, in which a recess 16 is recessed. At the opposite, in relation to Fig. 1 left end, a corresponding tapered fastening web 18 is also provided with a recess 16. From the lateral edge of this fastening web 18, a web 20 bent out of the plane of the contact sheet 4 goes off, forming the base of a plug connection 22 projecting from the front side of the positioning frame 2.
  • the web 20 is engaged in a recess 24 recessed on the positioning frame 2, which opens towards the end face of the positioning frame 2.
  • the positioning frame 2 also has at its front end portions on pins 26 which extend in the vertical direction of the heat generating element, ie, at right angles depart from the surface of the position frame 2. During assembly, these pins 26 are inserted into the recesses 16. Thereafter, the pin 26 is melted to form a melt thickening and secured the contact plate 4 in this manner with respect to the positioning frame 2.
  • the positioning frame 2 in addition to the pin 26 further positioning aids for positionally accurate arrangement of the contact plate 4 on the positioning frame 2.
  • the positioning frame 2 forms on the one hand at the front ends of the contact plate 4 end fixing webs 28, which extend slightly over the top of the contact plate 4 and whose distance from one another corresponds approximately to the length of the contact plate 4.
  • the contact plate 4 is positioned in the longitudinal direction.
  • boundary edges 30 In the transverse direction of the positioning frame 2 to the other over almost the entire longitudinal extent of the contact plate 4 extending boundary edges 30, which also extend beyond the top of the contact plate 4 and whose distance from each other is a little larger than the width of the contact plate 4.
  • This boundary edge 30 is surmounted on both sides by boundary webs 32 with inner latching projections, by means of which a heat-emitting element to be arranged on the heat-generating element can be fixed for assembly purposes.
  • Fig. 3 results in - opposite surfaces of the PTC elements 6 on the inner surfaces of the contact plates 4 and are fixed in a frame opening 34 of the positioning frame 2.
  • Fig. 1 results, there are six PTC elements 6 within a frame opening 34.
  • the packing of the PTC elements is spaced from the material of the positioning frame 2 by an insulating gap 36.
  • This insulating gap 36 also extends in a direction parallel to the bearing plane between the inside of the contact plate 4 and a tapered inner edge 38 of the position frame surrounding the frame opening 34 circumferentially.
  • the current-carrying parts of the heat-generating element ie, the two contact plates 4 and the PTC elements 6 are spaced from the material of the positioning frame 2.
  • This distance is in the embodiment shown the Fig. 1 to 4 secured by an insulating spacer 40 which circumferentially surrounds the front end of the inner edge 38.
  • the insulating spacer means 40 is formed in the embodiment shown by a silicone strip which receives the front portion of the inner edge 38 in and surrounding it circumferentially.
  • the spacing means should only prevent the live parts coming into direct contact with the plastic material of the positioning frame 2.
  • the insulating properties of the spacer means 40 are chosen so that this has a better insulation effect than the plastic material of the positioning frame 2 anyway.
  • the width of the spacing means 40 in the width direction is selected such that it in any case reaches as far as the wide-side end of the contact sheet 4.
  • the spacer means 40 covers the upwardly and downwardly exposed sides of the inner edge 30 and a peripheral edge formed by the inner edge 38, the frame opening 34 peripherally surrounding edge 42.
  • the spacer means 40 can then also as the inner, the frame opening 34 circumferentially surrounding edge enclosing insulating jacket considered be, both a direct contact between the PTC element 6 and the thermoplastic material of the positioning frame 2 as well as a direct contact of the contact plates 4 at prevents the positioning frame 2 and ensures to be observed for electrical insulation minimum distance between said parts.
  • the insulating layer has a transverse direction ( Fig. 3 ) on both sides over the contact plate 4 extending edge portion 4. Between this edge portion 4 and the inner edge 38 of the position frame 2 there is a sealing element 46, which is sealingly applied both against the position frame 2 and against the insulating layer 8.
  • the encapsulation then has the insulating layers 8 lying opposite one another and the arrangement of two sealing elements 46 extending substantially at right angles thereto with the material of the positional frame 2 provided therebetween.
  • the encapsulation is chosen so that no moisture or contamination from the outside can reach the live parts.
  • the sealing element 46 is formed by a plastic adhesive which fixes the insulating layer 8 with respect to the positioning frame 2 and thus encloses all parts of the heat-generating element provided within the insulating layers 8.
  • a plastic adhesive which fixes the insulating layer 8 with respect to the positioning frame 2 and thus encloses all parts of the heat-generating element provided within the insulating layers 8.
  • Elastomers for example silicone or polyurethane, have proven to be suitable for forming the sealing element 46 in the form of an adhesive.
  • the sealing member 46 extends in the longitudinal direction of the positioning frame and is provided between the outer edge of the frame opening 34 and the boundary edge 30.
  • the sealing element bears against the inner edge 38, which is reduced in thickness.
  • a sealant limiting edge 48 is provided on the outside, which is formed by the positioning frame 2. With a view to the best possible sealing, the sealing element 46 can rest against this edge, which extends transversely to the receiving plane extends for the PTC elements.
  • FIGS. 5 and 6 an alternative embodiment of the heat generating element according to the invention is shown. Identical components are identified by the same reference numerals with respect to the previously discussed embodiments.
  • the contact plate 4 each has a width approximately corresponding to the width of the PTC element.
  • the contact plate 4 In each of the frame openings 34, only one PTC element 6 is arranged. In the longitudinal direction of the position frame 2, a plurality of PTC elements 6 are arranged one behind the other.
  • the boundary edge 30 serves only the lateral abutment of the sealing element 46.
  • the insulating layer 8 also extends with height distance to the upper edge of the boundary edge 30, so that any deviations in the widthwise alignment of the insulating layer 8 with respect to the position frame 2 can be compensated without affecting the performance of the heat generating element.
  • the current-carrying parts are circumferentially encapsulated. In a direction transverse to the bearing plane of the PTC elements 6, this encapsulation is formed by the two sealing elements 46 and the spacing means 40 arranged therebetween.
  • the outer surface of the heat-generating element is completely flat and is formed solely by the outer surface of the insulating layer 8. Only in the region of the front ends, these upper layer 8 are superior elements which engage in corresponding recesses 16 of the contact plates 4 in the form of the pins 26 which, as already described above with reference to the first embodiment.
  • the top is surmounted by fixing webs 28, which in this embodiment, in particular the positioning of the serve heat-emitting slats in the longitudinal direction.
  • the positioning frame 2 extends in the longitudinal direction to beyond the outwardly deflected region of the contact plate 4 and thus provides reliable insulation and spacing of the two current-carrying components.
  • FIGS. 7 and 8 show an alternative embodiment of a heat generating element according to the invention with a positioning frame 2, on which the present lower contact plate 4u is arranged by encapsulation.
  • the contact plate 4u can have recesses or openings at its edge, through which the highly insulating plastic mass forming the position frame can flow during injection molding and thus can connect the contact plate 4 to the position frame 2.
  • the lower contact plate 4u is at its ends to the center of the position frame out, so that the contact plate 4u is securely surrounded by the frame 2 forming the material.
  • the positioning frame 2 is made of an electrically high-quality, temperature-resistant (200 ° C) silicone. The embodiment then has a CTI value that ensures safe operation at voltages of about 500V.
  • the position frame is maintained already described construction in which between the material of the positioning frame 2 and the insulating layer 8, a sealing adhesive edge 46 is provided, which is presently formed of an elastomeric adhesive. With the interposition of this adhesive strip 46, the mutual insulating layers 8 abut against the positioning frame 2.
  • both the electrical conductor 4u and the adjoining insulating 8u are placed in an injection molding and overmoulded by the highly insulating plastic material of the position frame 2 ( Fig. 9 ).
  • the PTC elements 6 are inserted into the frame openings 34.
  • an electrical conductor 4 is now applied to the PTC element (s) 6.
  • the directly applied to this electrical conductor track 4 insulating layer 8 is connected to the position frame 2.
  • the modification described here with respect to the positioning of the contact sheet (s) 4 and the formation of the contact elements at the or the front end (s) of the position frame 2 the embodiments described above.
  • Fig. 10 a further modified embodiment is shown. Also in this embodiment, the same components with respect to the previously discussed embodiments are provided with the same reference numerals.
  • the sealing elements 46 are integrally formed on opposite side surfaces of the positioning frame 2 on the formed as an injection molding position frame 2.
  • the position frame 2 is injection molded from silicone.
  • the PTC elements 6 are inserted in this frame 2.
  • the insulating layers 8 are placed on both sides of the sealing element 46.
  • the recorded within the position frame 2 components, contact plate 4 and PTC elements 6 are clamped between the insulating layers 8. These in turn are biased against each other via separate locking elements 62.
  • the latching elements 62 may be formed, for example, by C-shaped plastic clips which bias both the insulating layers 8 against each other with the interposition of the position frame 2 and the relatively soft and labile position frame.
  • the latching elements 62 are distributed in any case at predetermined intervals over the entire longitudinal extension of the positioning frame 2.
  • the cooperating with the insulating layer 8 locking projections of the locking elements 62 may be associated with locking recesses or locking lugs, which are mounted on the side of the insulating layer. Also, the locking projections may be connected by gluing with the insulating layer 8.
  • Conceivable is any configuration that prevents the practical use of the heat-generating element on the one hand slipping the locking elements 62 of the surface of the insulating layer 8 and on the other hand, a possible flat contact the heat-emitting elements on the outside of the insulating layer 8 is not hindered.
  • a heating device in the form of a circumferentially closed frame 52, which is formed by two frame shells 54.
  • a plurality of mutually parallel layers of identically formed heat-generating elements for example Fig. 1 to 4 .
  • the frame 52 includes a spring, not shown, by which the layer structure is held under pretension in the frame 52.
  • all the heat-emitting elements 56 are disposed immediately adjacent to a heat-generating element.
  • heat-emitting elements 56 are formed by meandering bent aluminum sheet metal strips.
  • the heat-generating elements are located between these individual heat-emitting elements 56 and behind the longitudinal struts 58 of the Lucasein- or outlet opening of the frame 52 passing through the grid.
  • One of these longitudinal struts 58 is removed in the middle of the frame 52 for the sake of illustration, so that there is a heat generating element 60 can be seen.
  • the frame 52 is preferably made of plastic, whereby the electrical insulation can be further improved.
  • An additional protection especially against unauthorized touching of the live parts of Heating device is additionally provided by the grid, which is also formed of plastic and formed integrally with the frame shells 54.
  • a plug connection depart from the power supply and / or control lines through which the heater can be connected in terms of control and Strom machinesshunt in a vehicle.
  • a housing is indicated, which in addition to the plug connection may also have control or regulating elements.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Thermistors And Varistors (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Claims (21)

  1. Elément chauffant d'un dispositif de chauffage destiné au réchauffement de l'air, comprenant au moins un élément PTC (6) (à coefficient de température positif) et un cadre de positionnement (2), lequel forme au moins une ouverture de cadre (34) pour le logement du ou des éléments PTC (6),
    caractérisé
    en ce qu'une fente d'isolation (36) est prévue entre l'élément PTC (6) et le matériau du cadre de positionnement (2) entourant l'ouverture de cadre (34) sur sa périphérie, de telle sorte que l'élément PTC (6) est supporté avec un degré d'isolation élevé dans le cadre de positionnement (2), et
    en ce qu'au moins une piste conductrice est disposée à intervalle du cadre de positionnement (2) et est recouverte par une couche isolante (8) couvrant l'ouverture de cadre (34), laquelle est appliquée contre le cadre de positionnement (2) avec un élément d'étanchéité (46) intercalé.
  2. Elément chauffant selon la revendication 1, caractérisé en ce qu'un moyen d'espacement isolant (40) est prévu dans la fente d'isolation (36).
  3. Elément chauffant selon la revendication 1 ou 2, caractérisé en ce que le moyen d'espacement (40) et/ou le cadre de positionnement (2) sont composés d'un matériau de haute qualité d'isolation électrique.
  4. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que le bord entourant l'ouverture de cadre (34) sur sa périphérie supporte une bande isolante (40).
  5. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que le matériau isolant de haute qualité est du silicone.
  6. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que la bande isolante est prévue sous la forme d'un cadre d'isolation (40) clos garnissant l'ouverture de cadre (34) sur sa périphérie.
  7. Elément chauffant selon l'une des revendications 2 à 6, caractérisé en ce que le cadre de positionnement (2) forme une languette (54) s'engageant dans une rainure de réception (52) ménagée sur le moyen d'espacement (40).
  8. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que des pistes conductrices électriques (4) sont appliquées contre des surfaces latérales opposées de l'élément PTC (6) et en ce que la fente d'isolation (36) se poursuit entre les pistes conductrices électriques (4) et le matériau du cadre de positionnement (2).
  9. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que l'élément PTC (6) est raccordé à la piste conductrice électrique (4) et disposé relativement au cadre de positionnement (2) par fixation isolante de la piste conductrice électrique (4), de telle sorte qu'une fente d'air soit obtenue entre l'élément PTC (6) et le matériau du cadre de positionnement (2) entourant l'ouverture de cadre (34) sur sa périphérie.
  10. Elément chauffant selon la revendication 9, caractérisé en ce que la fente d'air est entourée d'un élément de rembourrage isolant (40).
  11. Elément chauffant selon la revendication 9 ou 10, caractérisé en ce que la piste conductrice électrique (4) est appliquée contre le cadre de positionnement (2) avec un élément de joint (46) intercalé.
  12. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que l'élément de joint (46) est formé par une colle synthétique raccordant la couche isolante (8) au cadre de positionnement (2).
  13. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que l'élément de joint (46) est réalisé d'un seul tenant avec le cadre de positionnement (2), comme pièce moulée par injection.
  14. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que l'élément de joint (46) est prévu pour s'étendre au moins dans le sens longitudinal du cadre de positionnement (2).
  15. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que l'élément de joint (46) est adjacent à un bord de moyen d'étanchéité (48) formé par le cadre de positionnement (2) et s'étendant au moins dans le sens longitudinal du cadre de positionnement (2).
  16. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que le cadre de positionnement (2) forme des bords de positionnement (30) s'étendant perpendiculairement au plan d'appui de l'élément PTC (6) et limitant latéralement un logement de la couche isolante (8) et/ou de la piste conductrice électrique (4).
  17. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que des tourillons (26) sont formés sur le cadre de positionnement (2), s'étendant perpendiculairement au plan d'appui de l'élément PTC (6), et qui sont engagés dans des évidements (16) formés sur les pistes conductrices électriques (4) et forment une surépaisseur obtenue par fusion, au moyen de laquelle les pistes conductrices électriques (4) sont fixées contre le cadre de positionnement (2).
  18. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que le cadre de positionnement (2) est composé d'un matériau isolant en tant que pièce en matière synthétique moulée par injection, et en ce que le moyen d'espacement (40) et/ou l'élément de rembourrage (40) sont réalisés par moulage par extrusion d'un composant synthétique hautement isolant contre le cadre de positionnement (2).
  19. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que, sur un côté du cadre de positionnement (2), au moins une piste conductrice électrique (4) est raccordée au cadre de positionnement (2) par moulage par extrusion du matériau hautement isolant formant le cadre de positionnement (2).
  20. Elément chauffant selon l'une des revendications précédentes, caractérisé en ce que la couche isolante (8) adjacente à la première piste conductrice électrique (4) est raccordée au cadre de positionnement (2) par moulage par extrusion.
  21. Dispositif de chauffage destiné à chauffer plusieurs éléments chauffants (60), comprenant au moins un élément PTC (6) et des pistes conductrices électriques (4) appliquées contre des surfaces latérales opposées de l'élément PTC (6), ainsi que plusieurs éléments transmetteurs de chaleur (56) disposés en couches parallèles, lesquels sont maintenus appliqués contre des côtés opposés de l'élément chauffant (60), sous précontrainte de ressort dans un cadre, caractérisé par un élément chauffant selon l'une des revendications 1 à 20.
EP05020752A 2005-09-23 2005-09-23 Element chauffant d'un dispositif de chauffage Expired - Fee Related EP1768457B1 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP05020752A EP1768457B1 (fr) 2005-09-23 2005-09-23 Element chauffant d'un dispositif de chauffage
DE502005004134T DE502005004134D1 (de) 2005-09-23 2005-09-23 Wärmeerzeugendes Element einer Heizvorrichtung
ES05020752T ES2303167T3 (es) 2005-09-23 2005-09-23 Elemento generador de calor de un dispositivo calefactor.
ES06017063T ES2303712T3 (es) 2005-09-23 2006-08-16 Elemento generador de calor para un dispositivo de calefaccion.
DE502006000793T DE502006000793D1 (de) 2005-09-23 2006-08-16 Wärmeerzeugendes Element einer Heizvorrichtung
EP06017063A EP1768459B1 (fr) 2005-09-23 2006-08-16 Elément chauffant d'un dispositif de chauffage
JP2006257828A JP4170355B2 (ja) 2005-09-23 2006-09-22 加熱装置の熱発生要素
JP2006257826A JP4385044B2 (ja) 2005-09-23 2006-09-22 加熱装置の熱発生要素
US11/534,387 US7667166B2 (en) 2005-09-23 2006-09-22 Heat-generating element of a heating device
US11/534,470 US7777161B2 (en) 2005-09-23 2006-09-22 Heat-generating element of a heating device
KR1020060092970A KR100837333B1 (ko) 2005-09-23 2006-09-25 난방 장치의 열 생성 부재
CN2006101397786A CN1937860B (zh) 2005-09-23 2006-09-25 加热装置的发热部件
KR1020060093006A KR100850476B1 (ko) 2005-09-23 2006-09-25 난방 장치의 열 생성 부재

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05020752A EP1768457B1 (fr) 2005-09-23 2005-09-23 Element chauffant d'un dispositif de chauffage

Publications (2)

Publication Number Publication Date
EP1768457A1 EP1768457A1 (fr) 2007-03-28
EP1768457B1 true EP1768457B1 (fr) 2008-05-14

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Application Number Title Priority Date Filing Date
EP05020752A Expired - Fee Related EP1768457B1 (fr) 2005-09-23 2005-09-23 Element chauffant d'un dispositif de chauffage

Country Status (7)

Country Link
US (1) US7667166B2 (fr)
EP (1) EP1768457B1 (fr)
JP (1) JP4385044B2 (fr)
KR (1) KR100837333B1 (fr)
CN (1) CN1937860B (fr)
DE (1) DE502005004134D1 (fr)
ES (1) ES2303167T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2393336A1 (fr) 2010-06-04 2011-12-07 Behr France Rouffach S.A.R.L. Caloporteur
DE102018220333A1 (de) 2018-11-27 2020-05-28 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4981386B2 (ja) * 2006-08-30 2012-07-18 三菱重工業株式会社 熱媒体加熱装置およびそれを用いた車両用空調装置
EP1916873B1 (fr) 2006-10-25 2009-04-29 Catem GmbH & Co.KG Elément générateur de la chaleur pour un dispositif chauffant électrique et son procédé de fabrication
EP2017545B1 (fr) * 2007-07-18 2012-04-25 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique
DE502007005351D1 (de) * 2007-07-20 2010-11-25 Eberspaecher Catem Gmbh & Co K Elektrische Heizvorrichtung insbesondere für Kraftfahrzeuge
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EP1768457A1 (fr) 2007-03-28
JP4385044B2 (ja) 2009-12-16
US20070068913A1 (en) 2007-03-29
DE502005004134D1 (de) 2008-06-26
KR100837333B1 (ko) 2008-06-12
CN1937860A (zh) 2007-03-28

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