EP2109345B1 - Elément produisant de la chaleur et dispositif de chauffage comprenant un élément produisant de la chaleur - Google Patents

Elément produisant de la chaleur et dispositif de chauffage comprenant un élément produisant de la chaleur Download PDF

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Publication number
EP2109345B1
EP2109345B1 EP08010213A EP08010213A EP2109345B1 EP 2109345 B1 EP2109345 B1 EP 2109345B1 EP 08010213 A EP08010213 A EP 08010213A EP 08010213 A EP08010213 A EP 08010213A EP 2109345 B1 EP2109345 B1 EP 2109345B1
Authority
EP
European Patent Office
Prior art keywords
heat
generating element
element according
housing
plastic sheets
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
EP08010213A
Other languages
German (de)
English (en)
Other versions
EP2109345A1 (fr
Inventor
Franz Bohlender
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.)
Eberspaecher Catem GmbH and Co KG
Original Assignee
Eberspaecher 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 Eberspaecher Catem GmbH and Co KG filed Critical Eberspaecher Catem GmbH and Co KG
Priority to US12/409,637 priority Critical patent/US8395087B2/en
Priority to CN2009101344119A priority patent/CN101557659B/zh
Priority to JP2009096224A priority patent/JP5134579B2/ja
Publication of EP2109345A1 publication Critical patent/EP2109345A1/fr
Application granted granted Critical
Publication of EP2109345B1 publication Critical patent/EP2109345B1/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
    • 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
    • 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
    • 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
    • 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 series PTC elements which are energized via parallel to each other, flat against 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 for example 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 other conductor track through a metal strip, which is supported with the interposition of an electrical insulating layer on the circumferentially shot metallic profile.
  • the heat-emitting elements are formed by lamellae arranged in several parallel layers, which extend at right angles to the metal profile which is closed at the circumference.
  • the EP 1 467 599 known generic Heater provided a plurality of circumferentially closed metal profiles formed in the manner described above, 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 provide lower heat output at elevated temperature, so local overheating can interfere with the self-regulating properties of the PTC elements.
  • WO 99/18756 From the WO 99/18756 is an immersion heater with PTC heating elements known, which are arranged between electrical conductor tracks, which are each covered with insulating layers for the isolation of the electrical conductor tracks relative to the metallic housing of the immersion heater.
  • the housing sealingly encloses the PTC heating elements.
  • a plate made of an insulating ceramic is provided between the housing and the heat-generating element.
  • the present invention is intended to specify a heat-generating element of a heating device and a corresponding heating device, which offer increased safety.
  • the present invention aims to increase the safety with regard to a possible electrical flashover.
  • the present invention is also intended to mean a heating device having a plurality of heat-generating elements comprising at least one PTC element and electrical traces adjacent to opposite side surfaces of the PTC element and a plurality of heat-emitting elements disposed in parallel layers and applied to opposite sides of the heat-generating element , which can be safely and effectively operated with high currents.
  • a very good dielectric strength for example, of 4 kV and more can be achieved if a multilayer film is provided directly on the conductor, possibly with the interposition of a ceramic layer.
  • This multilayer film is preferably glued directly to the ceramic layer or the conductor track by lamination.
  • the use of a multilayer film can be achieved with basically the same layer thickness compared to a single-layer film, a better mechanical protection, since the interconnected films better mechanical stresses can absorb without cracking and failure, as a single-layer film. Accordingly, to improve the heat transfer with the same or even better mechanical strength, the layer thickness of the insulating layer can be reduced.
  • the insulating layer may be formed solely by the multi-layered film, which is preferably provided on the outside of the heat-generating element, so that a heat-emitting element, such as a lamella, abuts directly against the film.
  • a heat-emitting element such as a lamella
  • one or more ceramic layers can be provided as part of the insulating layer between the film and the conductor track.
  • the insulating layer should preferably rest directly on the electrical conductor tracks, so that the heat transfer from the heat-generating elements to the heat-emitting elements is impaired only to a small extent.
  • the insulating layer should have the best possible thermal conductivity.
  • the aim is a thermal conductivity of more than 4 W / (m K).
  • an insulating layer with an electrical insulation of more than 6 kV / mm has been found.
  • the insulating layer should preferably have an electrical breakdown strength of at least 2000 V, preferably at least 3000 V, in the transverse direction of the layer structure.
  • the insulating layers are fixedly connected to the housing, which is an insulating housing.
  • the insulating layers are on the outside of the electrical conductors and cover them. These in turn receive between them the at least one PTC element which is surrounded by the insulating housing. Accordingly, there is a structure in which the top and bottom of the heat-generating element is covered by the insulating layer, while the intermediate extending end face of the heat-generating element is occupied by the insulating housing. Accordingly, the at least one PTC element is captured and encapsulated by the housing and the insulating layers firmly bonded to the housing from the environment.
  • the housing can form a plurality of receiving openings for receiving individual or multiple PTC heating elements.
  • the wall of a receptacle formed by the housing may be contoured for a plurality of PTC heating elements to space individual PTC elements from each other or to form pitches.
  • an elongated housing receptacle for the arrangement of a plurality of PTC elements in a row can be formed behind one another, wherein the receptacle for individual PTC elements is divided by inwardly projecting webs.
  • the insulating layer can be bonded directly to the electrical conductor.
  • the plastic film is preferably laminated to the ceramic plate, if such is provided.
  • the film preferably has on one side a wax layer of between 10 to 15 .mu.m, in particular under the operating conditions of the heat-generating element, ie at higher temperatures of about 80 ° C, and melts when pressing the insulating layer against the conductor and allows efficient heat transfer.
  • the heat-generating element may be formed by a plurality of successively arranged PTC elements, these two-sided conductive tracks, as well as the interconnects each outside surrounding insulating layers. All components of this layer structure can be connected to one another, in particular adhesively bonded.
  • the electrically conductive insulating layer should in this case preferably project beyond the electrical conductor track, so that the electrically conductive and energized components of the heat-generating element are located at a distance behind the outer, insulated edges of the heat-generating element.
  • the electrical conductor can project beyond the insulating layer to form an electrical contacting point.
  • a known position frame which forms a frame opening for receiving the at least one PTC element and as an insulating housing in the sense of the present Invention can be considered.
  • This known per se positioning frame is, for example, in the aforementioned EP 0 350 528 described and is usually made of a non-conductive material, in particular a plastic material.
  • the position frame is usually formed as an elongate member, which leaves out a frame openings in the plane of the PTC elements or the heat-generating element for one or more PTC elements. In this frame opening or the PTC elements are positioned.
  • Such a position frame can essentially form the insulating housing and be firmly connected to the top and bottom sides of the insulating layers.
  • the insulating layers can be glued or welded to the position frame.
  • the plastic material of the insulating housing may be reshaped to connect the insulating layers to the housing. Any kind of A compound capable of providing a strong and preferably tight connection between the insulating layer and the housing material is suitable for the realization of the invention.
  • plastic films are connected to each other including a Fasergewirkes.
  • the plastic films can for example be laminated on both sides of the Fasergewirke.
  • the fiber knitted fabric can, for example, consist only of fiber strands which are provided substantially parallel to one another and which do not overlap or hardly overlap.
  • a fiber fabric is used, which can better withstand multiaxial stress states within the composite of the at least two plastic films with the fiber fabric arranged therebetween. It is recommended to use fibers whose electrical conductivity is low.
  • thermal stress of the fibers of the knitted fabric is proposed according to a preferred development to use a fabric of glass fibers.
  • the fibers of the knitted fabric are furthermore preferably silicone-soaked, so that a substantially air-free inclusion of the fiber knitted fabric results between the plastic films.
  • a complete wetting of all fiber strands of the knitted fabric moreover, there is also a firm and therefore good bond between the opposing foil layers.
  • each of the multilayer films comprises at least two plastic films glued together.
  • a very effective proposal for good heat transfer through the insulating layer to the outside and for reliable and sufficient insulation has been found to be an insulating layer comprising two multi-layered films bonded together, each of the multi-layered films having two plastic films bonded together. which are glued together directly or with the interposition of a Fasergewirkes.
  • each individual plastic foil should be between 0.05 and 0.09 mm, preferably between 0.06 and 0.08 mm.
  • Suitable materials for forming the plastic film are polyimide, polyamide, silicone or Teflon (PTFE).
  • the layers glued together may be formed identical to the material or formed of different plastic materials. With regard to a good mechanical strength of the interconnected plastic films, these are preferably connected bubble-free, for example by lamination. Suitable for bonding the two plastic films is in particular a silicone-containing adhesive.
  • a housing for circumferential insulation of the PTC heating element with adjacent conductor tracks according to another preferred embodiment of the present invention, it is proposed to connect the insulating layer in each case by means of encapsulation with a housing.
  • This housing can consist of two housing shells, which are interconnected. Housing shells have proven to be particularly suitable which comprise two housing elements which abut one another with the interposition of a compressible element, the sealing effect of which improves when pressure is applied to the heat-generating element from outside. It is particularly thought of incorporation of the heat-generating elements in a frame of an electric heater in which the at least one heat-generating element and externally applied thereto heat-emitting elements are held under bias of a spring and placed against each other, wherein the spring is supported on the inside of the frame ,
  • the plastic material forming the housing encloses at least one edge region of the conductor track, which is usually formed from a sheet-metal strip, so that a relatively rigid housing is provided which is fixed with respect to its contour.
  • the housing is preferably formed of a thermoplastic elastomer, or of silicone.
  • the heat-emitting elements lie with the interposition of at least two interconnected plastic films comprehensive insulating layer on the opposite sides of the heat-generating element: then lie the two Plastic films on the outside of the heat-generating element and form the contact surface for a heat-emitting element, which is formed for example of a meandering bent aluminum or copper strip.
  • FIG. 1 shows a cross-sectional view of a first Ausdusbegsbeiette a heat-generating element 1, which comprises two elongated U-shaped housing elements 2.3, which are each made of plastic injection molded parts.
  • the housing shell elements 2, 3 each have on opposite transverse sides a metal strip 10 and an insulating layer applied thereto 7.
  • the edges of the respective metal strips 10 are wrapped by the housing elements 2, 3 substantially forming plastic material.
  • the two metal strips 10 are connected by molding with the respective plastic material of the housing elements 2, 3.
  • an insulating film 9 is applied, provided by the present on the outside of the heat-generating element 1 Insulating layer 7 is formed exclusively and will be described in more detail below.
  • a sealing strip 4 which circumferentially seals the interior formed by the two housing elements 2, 3 and accommodating a PTC heating element 5 to the outside.
  • the sealing effect of the sealing strip increases with an externally acting on the housing 2, 3 compressive force.
  • the thickness of the sealing strip 4 is chosen so that conceivable thickness-wise manufacturing tolerances of at least one PTC element 5 can be compensated by compression of the sealing strip 4 without abutting the two housing elements.
  • PCT heating elements are subject to certain dimensional variations due to production. If the elastic properties and the dimension of the sealing strip 4 is selected adapted, such thickness tolerances can be compensated by compression of the sealing strip, so that in the conceivable thickness-wise deviations is basically given a circumferential seal the PTC heating element receiving interior.
  • the compression of the sealing strip made of a compressible plastic which is supported on opposite end faces of the two housing elements 2, 3 leads to a certain mobility of the two housing elements 2, 3 transversely to a plane which extends parallel to the lower or upper metal strip 6, 7. With increasing pressure from the outside on the heat-generating element 1, the sealing effect increases by the compressible plastic.
  • the conductor tracks at the front end of the housing elements 2.3 project beyond this, there to possibly overtop the outside of the heat-generating elements surrounding and holding under bias in a layer structure frame and form there electrical frame connections.
  • FIG. 2 a cross-sectional view of a second embodiment is shown. Same components are opposite to in FIG. 1 shown embodiment with the same reference numerals.
  • FIG. 2 shows an alternative embodiment of a heat generating element 1 in cross-sectional view with a housing consisting of a housing shell element 2, and a shell counter-element 3, which are cup-shaped.
  • Both housing elements 2, 3 are produced as injection-molded plastic parts, by means of which both an insulating film 9 and a metal sheet 10 which directly adjoins the inner side and contacts the PTC heating element 5 are attached by means of extrusion coating.
  • the multilayer film 9 is provided as part of the insulating layer. This insulating film 9 is applied by laminating directly on the metal strip 10.
  • the plate-shaped element thus formed is connected by encapsulation with the plastic material forming the housing elements, which is preferably silicone.
  • the heat-generating element 1 is relatively thin, so that heat generated by the PTC heating element can pass through a conduit to a radiator element 11 almost unhindered.
  • the radiator elements 11 are additionally taken laterally in the embodiment shown by the plastic material of the two housing elements 2.3 and held in position.
  • the edges of the housing elements 2, 3 produced by encapsulation project beyond the aluminum oxide layer 8 on the outside, as a result of which the radiator elements 11 lying directly against the aluminum oxide layer 8 do not extend transversely to the one in FIG FIG. 2 shown layer structure can be moved.
  • FIG. 1 also has that in FIG. 2 shown embodiment for manufacturing simplification two identically designed housing elements 2, 3.
  • Each one of the end faces formed by the edges of the respective housing elements 2 and 3 has a groove 20; the other end face is surmounted by a spring 21.
  • the spring 21 of one of the housing elements 2, 3 is engaged in the complementarily formed groove 20 of the other housing element 3, 2, so that the interior of the housing 2, 3 is sealed.
  • care should be taken that the width of the groove 20 is only slightly larger than the thickness of the spring 21.
  • the depth of the groove 20 and the length of the spring 21 are selected so that when taken in the housing PTC elements 5, these lie flat against the sheet metal strip 10 and that the housing elements 2.3 in shrinkage and / or Setzbeträgen or due to Manufacturing tolerances in particular on the part of the PTC elements 5 can be at least slightly moved towards each other and in the expected manufacturing tolerances or thermal expansion groove 20 and spring 21 with sufficient overlap to seal the housing are engaged.
  • the FIG. 3 shows a side perspective view of exploded layers of the insulating sheet 9, which is provided on the outside of the previously described heat generating element.
  • the insulating film 9 has six layers and consists of two each two-ply plastic films 30, 32, 34, 36, which are each formed identically, have a thickness of 0.07 mm and made of silicone.
  • Each of the plastic films 30 to 36 has a dielectric strength of more than 1.05 kV.
  • the outer plastic film 30 is glued to the adjacent plastic film 32 with the interposition of a glass fiber fabric 38.
  • the glass fiber fabric 38 consists of substantially perpendicular to each other arranged glass fiber strands, which are interwoven with each other.
  • the fiberglass strands are saturated with silicone.
  • the space between the plastic films 30 and 32 is filled with silicone as a whole.
  • a two-ply glass fiber reinforced film 40 is formed.
  • An underlying structure has an underlying two-ply glass fiber reinforced film 42.
  • the two-ply glass fiber reinforced films 40, 42 are each connected by themselves with an adhesive layer, whereby a six-ply insulating film 9 comprising two glass fiber fabric 38 and four plastic films 30, 32, 34 and 36 is formed ,
  • the adhesive layer provided between the multilayer films 40, 42 consists of silicone adhesive.
  • the insulating layer is not on the in FIG. 3 shown embodiment limited.
  • the glass fiber fabric 38 may be provided and other plastic films. At least two films should be bonded together, which has a composite film with a dielectric strength of 2.0 kV and more. Preferably, three of these composite films are used as the insulating layer. This results in a six-layer insulating layer, in which each individual insulating plastic film has a dielectric strength of at least 1.0 kV.
  • the aim is to provide a heat-generating element for use in a heater for the automotive industry, in which the heat-generating element is each secured with a dielectric strength of 300 volts.
  • This protection takes place on the upper and lower sides of the heat-generating element, which usually abut radiator elements, exclusively through the insulating layer 9.
  • the regularly perpendicular extending sides of the heat-generating element 1 is a corresponding protection by the plastic material of the housing 2, 3 provided.
  • 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 or 2 .
  • 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 60.
  • the in the Fig. 4 shown heat-emitting elements 56 are formed by meandering bent aluminum sheet metal strips -also identical to the radiator elements 11 according to Fig. 1 or 2.
  • 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 contact with the live parts of the heater 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)
  • Air-Conditioning For Vehicles (AREA)
  • Resistance Heating (AREA)

Claims (15)

  1. Un élément produisant de la chaleur (1), en particulier pour le chauffage de l'air dans un chauffage auxiliaire électrique d'un véhicule, comprenant au moins un élément de chauffage PTC (5) et un boitier (2, 3) isolant entourant l'élément de chauffage PCT (5) ainsi que des pistes conductrices électriques (10) dont des surfaces intérieures sont positionnées à des cotés opposés de l'élément de chauffage PCT (5),
    caractérisé en ce que
    les surfaces extérieures des pistes conductrices électriques (10) sont recouvertes chacune par une couche isolante (7), qui comprend au moins deux feuilles en matière plastique reliées entre elles (30, 32 ; 34, 36) et en ce que
    les couches isolantes (7) sont reliées de façon fixe avec le boitier (2, 3).
  2. L'élément produisant de la chaleur selon la revendication 1, caractérisé en ce que les feuilles en matière plastique (30, 32 ; 34, 36) sont reliées entre elles et inclurent un maillage de fibre (38).
  3. L'élément produisant de la chaleur selon la revendication 2, caractérisé en ce que les feuilles en matière plastique (30, 32 ; 34, 36) sont reliées entre elles et inclurent un tissage de fibre de verre (38).
  4. L'élément produisant de la chaleur selon la revendication 3, caractérisé en ce que les feuilles en matière plastique (30, 32 ; 34, 36) sont reliées entre elles et inclurent un maillage de fibre imprégné de silicone(38).
  5. L'élément produisant de la chaleur selon l'une des revendications 2 à 4, caractérisé en ce que la couche isolante (7) comprend des feuilles (40) comprenant à chaque fois au moins deux feuilles en matière plastique (30, 32 ; 34, 36) reliés entre elles, les feuilles étant collées entre elles.
  6. L'élément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que les feuilles en matières plastique (30, 32 ; 34, 36) ont une rigidité diélectrique d'au moins 2,00kV.
  7. L'élément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que les au moins deux feuilles en matière plastique (30, 32 ; 34, 36) reliés entre elles sont positionées directement contre les pistes conductrices électriques (10) et que les au moins deux feuilles en matière plastique (30, 32 ; 34, 36) reliés entre elles sont prévues sur le coté extérieur de l'élément produisant de la chaleur (1).
  8. L'élément produisant de la chaleur selon une des revendications précédentes, caractérisé en ce que la couche isolante (7) est relié à l'aide d'un enrobage avec le boitier (2, 3) isolant entourant l'élément de chauffage PCT (5).
  9. L'élément produisant de la chaleur selon la revendication 8, caractérisé en ce que la couche isolante (7) est relié avec le boitier (2, 3) γ compris des bords de la bande conductrice (10).
  10. L'élément produisant de la chaleur selon la revendication 8 ou 9, caractérisé en ce que le boitier (2, 3) est en silicone.
  11. L'élément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que la matière de la feuille en matière plastique (30,32 ; 34,36) est choisie parmi un groupe comprenant : polymère, polyamide, silicone.
  12. L'élément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que la feuille en matière plastique (30,32 ; 34,36) a une épaisseur comprise entre 0,05 mm et 0,09 mm, de préférence entre 0,06 mm et 0,08 mm.
  13. L'élément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que les feuilles en matière plastique (30,32 ; 34,36) reliées entre elles sont reliées entre elles via une colle contenant du silicone.
  14. Dispositif de chauffage avec plusieurs éléments produisant de la chaleur (60) comprenant au moins un élément PCT (6) et des pistes conductrices électriques (4) positionnées sur des cotés opposées de l'élément PCT (6) et des éléments (56) distribuant de la chaleur disposés en couches parallèles, les éléments étant positionnées sur des cotés opposés de l'élément produisant de la chaleur (60),
    caractérisé en ce que les éléments distribuant de la chaleur (56) sont positionnées sur des cotés opposés de l'élément produisant de la chaleur (56) par interposition d'une couche isolante (7) comprenant au moins deux feuilles en matière plastique (30, 32 ; 34,36) reliées entre elles.
  15. Dispositif de chauffage pour chauffer l'air caractérisé par au moins un élément produisant de la chaleur selon une des revendications 1 à 13.
EP08010213A 2008-04-11 2008-06-04 Elément produisant de la chaleur et dispositif de chauffage comprenant un élément produisant de la chaleur Expired - Fee Related EP2109345B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/409,637 US8395087B2 (en) 2008-04-11 2009-03-24 Heat-generating element and heating device comprising the same
CN2009101344119A CN101557659B (zh) 2008-04-11 2009-04-09 发热元件及包括该发热元件的加热装置
JP2009096224A JP5134579B2 (ja) 2008-04-11 2009-04-10 発熱体及び発熱体を備えた暖房装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008018617 2008-04-11

Publications (2)

Publication Number Publication Date
EP2109345A1 EP2109345A1 (fr) 2009-10-14
EP2109345B1 true EP2109345B1 (fr) 2010-07-28

Family

ID=40854994

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EP08010213A Expired - Fee Related EP2109345B1 (fr) 2008-04-11 2008-06-04 Elément produisant de la chaleur et dispositif de chauffage comprenant un élément produisant de la chaleur

Country Status (6)

Country Link
US (1) US8395087B2 (fr)
EP (1) EP2109345B1 (fr)
JP (1) JP5134579B2 (fr)
CN (1) CN101557659B (fr)
DE (1) DE502008001033D1 (fr)
ES (1) ES2345574T3 (fr)

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ATE554631T1 (de) 2009-12-17 2012-05-15 Eberspaecher Catem Gmbh & Co Elektrische heizvorrichtung und wärmeerzeugendes element einer elektrischen heizvorrichtung
DE102010004034A1 (de) * 2010-01-05 2011-07-07 Valeo Klimasysteme GmbH, 96476 Elektrische Heizvorrichtung für Fahrzeuge mit Hochspannungs-Bordnetz
JP5535740B2 (ja) * 2010-04-14 2014-07-02 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
EP2393336B1 (fr) 2010-06-04 2017-05-17 Mahle Behr France Rouffach S.A.S Caloporteur
CN101945505A (zh) * 2010-08-31 2011-01-12 上海吉龙经济发展有限公司 一种双重水路密封的ptc加热器
US20140124500A1 (en) * 2012-11-05 2014-05-08 Betacera Inc. Insulated heater
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EP3101998A1 (fr) 2015-06-02 2016-12-07 Eberspächer catem GmbH & Co. KG Élément de chauffage ptc et dispositif de chauffage électrique comprenant un tel élément de chauffage ptc et procédé de fabrication d'un dispositif de chauffage électrique

Also Published As

Publication number Publication date
DE502008001033D1 (de) 2010-09-09
CN101557659B (zh) 2011-11-23
JP2009259823A (ja) 2009-11-05
JP5134579B2 (ja) 2013-01-30
US8395087B2 (en) 2013-03-12
ES2345574T3 (es) 2010-09-27
US20090255914A1 (en) 2009-10-15
CN101557659A (zh) 2009-10-14
EP2109345A1 (fr) 2009-10-14

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