EP2266823B1 - Dispositif de chauffage électrique - Google Patents

Dispositif de chauffage électrique Download PDF

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Publication number
EP2266823B1
EP2266823B1 EP09008078A EP09008078A EP2266823B1 EP 2266823 B1 EP2266823 B1 EP 2266823B1 EP 09008078 A EP09008078 A EP 09008078A EP 09008078 A EP09008078 A EP 09008078A EP 2266823 B1 EP2266823 B1 EP 2266823B1
Authority
EP
European Patent Office
Prior art keywords
housing
heating device
electric heating
elements
spring
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.)
Not-in-force
Application number
EP09008078A
Other languages
German (de)
English (en)
Other versions
EP2266823A1 (fr
Inventor
Franz Bohlender
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 AT09008078T priority Critical patent/ATE520555T1/de
Priority to ES09008078T priority patent/ES2367580T3/es
Priority to EP09008078A priority patent/EP2266823B1/fr
Priority to KR1020100058264A priority patent/KR101317847B1/ko
Publication of EP2266823A1 publication Critical patent/EP2266823A1/fr
Application granted granted Critical
Publication of EP2266823B1 publication Critical patent/EP2266823B1/fr
Not-in-force 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0236—Industrial applications 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
    • 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
    • F24H3/0452—Frame constructions
    • 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
    • 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
    • H05B3/40—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
    • 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 an electric heater having an open case in which a plurality of PTC elements and adjoining radiator elements are biased against each other.
  • Such electric heaters are well known as PTC heaters for motor vehicles and, for example, in the applicant EP 1 564 503 B1 described.
  • the PTC heating elements have self-regulating properties. Their electrical resistance increases with higher temperature, which brings with the use of PTC heating elements for heating air in a motor vehicle with the advantage that the electric heater can not overheat.
  • the heat generated by the PTC heating elements must be dissipated effectively.
  • a PTC element i. a ceramic stone is regularly arranged between two contact plates. This arrangement forms a PTC heating element.
  • the contact plates can in turn already be part of the radiator element.
  • the radiator elements are formed from metallic material with good heat conduction and conduct the heat initially introduced into the radiator elements via heat conduction to the air flowing in the radiator elements.
  • EP 1 621 378 a cohesive connection by means of adhesive or solder between the PTC element and the adjacent contact plate and the corrugated rib called radiator elements.
  • the electric heater in a space within the housing of a climate module in a vehicle relatively space-building, to cover the entire area interspersed by the air.
  • the area can sometimes be greater than that required for the heating power with effective use of the heating block forming elements.
  • the heating block must be designed to be relatively space-consuming, resulting in not inconsiderable additional costs.
  • the number of PTC elements within the heating block can be adapted to the desired heating power. Nevertheless, the entire air passage area within the housing must be filled with PTC heating elements and adjoining radiator elements.
  • the present invention has for its object to provide an improved electric heater.
  • the present invention seeks to provide a simple and inexpensive to manufacture solution as a development of a generic electric heater, in which the PTC heating elements bear with the adjoining radiator elements under bias against each other.
  • the present invention provides an electric heater having an open case in which at least one PTC heating element and radiator element are biased, the housing having an upper housing part and a lower housing part having openings for passing a radiator element Release media.
  • the lower housing part has at least one projecting from its bottom support member.
  • the upper housing part has a counter-element protruding from its lid surface to the support element. The support member and the counter element act together when closing the housing with a spring element made of plastic, which is clamped between the support member and the counter element and thus stores generated elastic deformation components.
  • the embodiment of the invention provides the ability to record a recording, in particular a receptacle for a single heating element comprising a PTC heating element, each with a laterally adjacent thereto radiator element in a Gefach a housing for itself and under bias, said bias by a spring element Plastic is effected.
  • a spring element made of plastic as for the stress of heat generating and heat-emitting layers of an electric heater of the generic type was considered unsuitable, investigations by the Applicant have shown that such spring elements in particular with good tolerance vote between a receptacle for the heat-generating and the heat-emitting elements within the housing and the dimensions of these heat-generating and heat-emitting elements, the necessary tension can also be effected by a plastic spring element.
  • the spring tension is preferably effected only when closing the housing.
  • a deformation of the spring element in which elastic deformation parts are generated in this. Due to the elasticity of the spring element these deformation components are stored, so that the spring element is suitable to track any self-amounts and thermally induced changes in dimensions.
  • the individual layers of radiator element and PTC heating element are therefore reliable and permanently under spring preload against each other.
  • the spring element is formed by a longitudinally extending plastic tendon which is deformed by provided in its longitudinal direction in an alternating manner supporting and counter-elements for storing elastic deformation components.
  • the support and counter elements are preferably provided so that adjacent to a support element in the longitudinal direction of the plastic chord initially follows a counter element.
  • the support element and the counter element can partially overlap in the longitudinal direction.
  • the extension direction of the individual layers of a heating stack or a heating block is considered, ie the longitudinal extent, for example, the PTC heating elements with its elongated metal bands.
  • each case three of the said elements are combined to form a group in order to bend the spring element at a predetermined point through alternating support points.
  • the arrangement is carried out with the goal of producing the spring tension primarily in that length section in which a PTC element to be clamped by the spring tension is located inside the housing.
  • the plastic tendon is formed by a plastic tape inserted into the housing.
  • the plastic band can have different cross-sectional shapes.
  • the plastic band can be an elongated flat band.
  • the design of the plastic strip in the form of a cord with circular or any other arbitrary cross-section is conceivable.
  • the plastic band can extend over the entire length of the housing. As well, the band can be divided into segments and extend only over a partial length of the housing.
  • a flexible plastic element is for example a thermoplastic elastomer or silicone in question.
  • the plastic band should have a high elasticity. With regard to heat resistance, rubbers are also conceivable as soft-elastic plastics for forming the plastic strip. However, the plastic band does not have to be formed exclusively from corresponding soft elastic plastics. It may also contain a core, for example of a fiber. The addition of fillers is conceivable.
  • the plastic tendon is integrally molded onto the housing lower part and / or the upper housing part. It has been shown that a corresponding plastic tendon can already be created with the plastics usually used to form plastic housings. Accordingly, the housing can be made entirely of a uniform material by means of injection molding. It is also conceivable, however, the injection of a plastic tendon by molding with another component. Thus, a plastic tendon made of a plastic with high elasticity can be inserted as an insert in an injection mold, which is used to form the lower housing part and / or the upper housing part. After that, one piece on the housing part molded plastic chord not necessarily be formed material identical to the housing part.
  • Good clamping of the PTC heating element with adjoining radiator elements is created, for example, by providing the plastic tendon approximately at the middle height of the receiving space in the closed housing.
  • the receiving space is thereby between the opposite inner surfaces of the lower housing part and the upper housing part, i. limited between the housing bottom and the top surface of the housing top.
  • the cover surface is the inner surface of the upper housing part.
  • the plastic tendon is not only preferably provided approximately at mid-height of the housing space, but preferably limited to this area substantially.
  • the plastic tendon therefore preferably extends only over a central region of the height of the housing space, preferably at a height corresponding to 7 to 15% of the height of the receiving space. In this way, caused by the plastic tendon spring preload can be effectively used to clamp the PTC heating element with adjoining radiator elements.
  • the upper housing part or the lower housing part has an abutment element formed integrally thereon.
  • This contact element caused by the spring element bias in the layered structure consisting of at least one PTC element and at least one radiator element is introduced.
  • the contact element accordingly conveys the spring force to the layered structure.
  • the contact element is pivotally mounted relative to that housing part on which it is integrally formed.
  • the pivot axis extends parallel to the longitudinal direction of the housing, i. the longitudinal extent of the PTC heating element.
  • the pivot axis is close to or in the plane of the bottom of the housing base or the cover surface of the housing upper part.
  • the abutment elements preferably protrude freely from the corresponding surface sections of the upper housing part or lower housing part, so that their pivotability about the said pivot axis is not obstructed by connection to side walls of the upper housing part or lower housing part.
  • the contact element on the side facing away from the spring element has an inclined sliding surface.
  • This sliding surface simplifies the installation of PTC heating element and radiator element in the housing.
  • the sliding surface ends, for example, approximately at mid-height of the housing space for transmitting the spring force in a plant projection.
  • This investment projection is usually on one of the radiator elements.
  • the contact element is biased when introducing the PTC heating element and the adjoining radiator elements in the housing in limits in the direction of the support element.
  • the particular located between the support element and the contact elements spring element urges the contact element, for example in the central region against the adjacent radiator element, whereby this is biased against the PTC heating element and this in turn against the other radiator element under bias.
  • the sliding surface facing away from the rear side of the contact elements extending substantially at right angles to the ground extending orientation and pointing to the contact elements inclined surface of the support element in the direction of the contact elements inclined to train.
  • a funnel-shaped tapered receptacle for the plastic strip is formed together with the back of the contact elements.
  • the plastic tape approaches when inserted into the housing by sliding on the inclined surface of the back of the or the contact elements and is thereby inevitably brought into the correct position to transmit the spring force preferably approximately centrally against the radiator element.
  • This end position of the plastic tape is safely taken in a preferred embodiment of the present invention, in which the inclined surface merges into a support for the plastic strip, said support extending substantially parallel to the bottom.
  • the support serves as a contact surface for the plastic tape and positioned selbiges in the height direction in the housing space.
  • This edition prevents the rest, that displaced by compression in the insertion direction of the counter element elastically deforming plastic spring in the direction of the lower housing part and thus escapes the applied tension.
  • the support may be enclosed between adjacent counter-elements. But there are also embodiments conceivable in which the edition and cover the counter element in the longitudinal direction of the housing partially or completely.
  • an elastic deformation components on the PTC element transmitting contact surface is provided.
  • This contact surface is formed regularly by the contact element.
  • the contact surface is movable to transmit the elastic deformation components in the direction of action of the tension.
  • the abutment surface is preferably effective only over a small height of the entire receiving space, i. is only on a small height section, for example, the radiator element.
  • the contact surface can be provided in the height direction at any position within the receiving space.
  • the contact surface should, however, be provided at the same height as the associated PTC element.
  • the contact surface does not necessarily have the deformation components directly on the PTC element. transfer.
  • the contact surface and / or the PTC element off-center in the height direction of the housing and close to the air inlet side of the electric heating device.
  • the air inlet side is the side through which the air to be heated enters the open housing.
  • the PTC element is located directly below a cover of the housing upper part or the housing lower part which forms the opening provided for this purpose.
  • the development can also be realized according to the invention and in a conventional electric heater in which the layer structure or the heating element is held under bias of a metallic spring. It is also conceivable eccentric arrangement of the PTC element in a position frame which is completely or partially covered by the opposing metal strips.
  • the development can be guided by the idea that the PTC element accommodated in the housing has a lower height than the radiator element assigned to the PTC element, the latter determining the height of the receiving space within the housing.
  • the corresponding arrangement of the PTC element off-center is achieved in particular by the fact that at least one PTC element associated retaining rib is formed on the housing lower part or the housing top, which extends at least partially in the longitudinal direction of the housing and through which the PTC element near the air inlet surface is provided.
  • the said retaining rib preferably has not only the function of arranging the PTC element in the height direction off-center within the receiving space. Rather, the retaining rib also serves to stiffen the housing part and penetrates this preferably continuously in the longitudinal direction.
  • the spring element preferably has, together with the counter element, a U-shaped configuration open to the bottom of the housing lower part.
  • the spring element preferably has, in addition to the two protruding in the direction of the bottom of the lower housing part legs a connecting web, which is provided with the housing closed between the middle height of the housing space and the lid surface. This web serves as a spring bar and preferably has a curved in the direction of the housing cover design, so that the web to produce a spring preload can be deformed upwardly bulging.
  • a substantially parallel to the counter element extending spring leg is firmly connected to the housing cover.
  • the parallel extension between counter-element and spring leg is obtained in particular with an unloaded spring element, i. before assembling the housing.
  • the spring leg preferably extends in the above-mentioned embodiment approximately at right angles to the housing cover.
  • the counter-element of the above-described contact element which is integrally and pivotally connected to the housing part and which preferably forms a contact surface for transmitting the elastic deformation components on the PTC element. It is assumed that the counter element when closing the housing and applying the contact surface, for example, to the radiator element in any case slightly deformed. However, the predominant deformation and its elastic storage is absorbed and stored by the spring leg and / or the spring leg connected to the counter element web.
  • the support element forms a ramp-shaped biasing surface, against which the spring element slides when closing the housing to produce elastic deformation components.
  • the electrical heating device is further developed in that the housing forms a plurality of compartments, in each compartment each heating rods formed from a PTC heating element with both sides adjacent thereto radiator elements and their elements are held under bias against each other.
  • the PTC heating element comprises, in a manner known per se, at least one PTC element, which is preferably accommodated, preferably clamped, between two electrically conductive sheet metal strips. Respectively on the outside of the PTC Thompsonelemtes the radiator elements abut it. The radiator elements are exposed in the air flow of the air to be heated, which flows through openings of the open housing.
  • a compartment of the housing is in each case dimensioned such that only one heating element, i. a unit of PTC heating elements with adjoining radiator elements can be accommodated in the compartment.
  • the heating elements are each held in separate compartments.
  • the heating element forming elements are each held under bias against each other fitting in the Gefach.
  • This solution has the advantage that a spring biasing the elements in a Gefach must compensate only a small tolerance.
  • This offers the possibility to assign a relatively simple, inexpensive to manufacture spring assembly each Gefach to put the elements held in the Gefach elements under bias against each other.
  • the spring elements formed of plastic are usually distributed in the interior of the housing and are each associated with the individual compartments.
  • a spring element can only clamp the elements of a heating element in a single Gefach against each other. But it can also be provided spring elements made of plastic, which hold the elements of the heating elements in two adjacent compartments against each other under bias.
  • the elements of the heating element under bias voltage setting spring element is provided.
  • the heating stages of the electric heating device are in each case for themselves recorded heating elements in the individual compartments.
  • each individual heating element accommodated in a separate compartment forms a respective heating stage.
  • all PTC heating elements and the adjacent thereto radiator elements of the electric heater are each combined to form heating elements and provided in separate compartments.
  • the electric heater is formed solely of heating rods, which are each taken up in a separate Gefach.
  • adjacent compartments are closed with housing cover sections which are attached to a lower housing part and release between them formed by the lower housing part spacer which connecting neighboring compartments. Thereafter, only the lower housing part forms the spacer element.
  • the spacing element itself is preferably not connected to a housing cover section. Rather, the spacer element is completely or partially exposed between the housing cover sections. In a sectional view through the housing thus result in two-part sealed sections where compartments are closed with housing cover sections, and one-piece sections where a spacer is provided between adjacent compartments.
  • Housing cover sections in this preferred embodiment may each be separately formed housing cover segments, which are assigned only to a Gefach to close this.
  • housing cover sections may also be provided on a uniformly shaped housing cover which forms bridges in the area of the spacer elements only via thin webs, preferably webs provided at the edge, which connect adjacent, preferably all housing cover sections with one another.
  • the spacer elements can be designed to be arbitrarily wide in the transverse direction, ie transversely to the longitudinal extent of the individual heating elements, in order to create the largest possible electric heating device at low production costs.
  • the spacers are preferably formed as relatively thin webs that connect adjacent compartments together. Thin webs are in particular realized in an embodiment in which the webs occupy only a thickness of 3% to 15% of the total thickness of the housing. Preferably, the webs are located approximately at mid-height of the housing.
  • the air passage openings have a flow resistance which corresponds approximately to the flow resistance of the heating elements.
  • the flow path allowed through the air passage openings should not oppose the air flow with significantly lower resistance than heating rods provided adjacent thereto. Otherwise, it would be feared that the majority of the air will flow through the spacers without being effectively heated.
  • FIG. 1 shows a top perspective view of a marked with reference numeral 2 housing comprising a housing lower part 4 and a housing upper part 6, which are interconnected.
  • the housing 2 has two parallel extending covers, of which only the cover 8 formed by the upper housing part 6 can be seen. Within the cover 8 a plurality of openings 10 are recessed, which allow passage of air through the housing 2.
  • Each of the openings 10 is centrally penetrated by a longitudinal web 12 which extends parallel to below the opening located radiator elements 14 and a heat generating PTC heating element 16 covers, which in the sectional view according to FIG. 2 can be seen and a plurality in the longitudinal direction of the longitudinal web 12 successively arranged PTC elements 18 and on both sides adjacent thereto sheet metal strips 20 comprises.
  • the opposite metal strips 20 to a PTC heating element 16 are energized with different polarity. Selected metal strips can be extended in a conventional manner laterally over the housing 2 to form contact tongues (see. EP 1 564 503 ).
  • the PTC elements 16 with double-sided adjoining radiator elements 14 each form a heating rod 24.
  • the lower housing part 4 forms a Gefach 26 for each heating element 24.
  • a heating element 24 is arranged in each Gefach 26 and held under bias of a spring described in more detail below, so that the individual layers of the heating element 24, ie the radiator elements 14, the PTC elements 18 and the sheet metal strips 20 provided therebetween under bias abut against each other, so that the heat generated by the PTC element 18 is transmitted with good heat conduction to the radiator element 14 and a safe current input can be made at least from the metal strips 20 to the PTC elements 18.
  • all metal strips 20 are led out to the formation of plug contacts the front side of the compartments 26.
  • spacers 30 are formed by the lower housing part. These spacers 30 bridge over a web 31 a distance between the compartments 26 and are relative to the outer surface of the housing 2 formed by the cover 2 inwardly offset (see. FIG. 2 ).
  • the upper housing part 6 provided in the manner of a housing cover is broken through.
  • the housing upper part 6 has only peripherally provided, connected housing cover sections 32, each covering a Gefach 26, connecting transverse webs 34.
  • the spacer elements 30 are released by the housing cover portions 32, so that the housing 2 is formed between the individual compartments 26 is substantially single-layered, that is, only the spacer elements 30 includes.
  • the transverse webs 34 are formed narrow relative to the length of the housing 2 and preferably leave more than 90% of the total length of the housing 2 between the individual compartments 26 free.
  • the webs 31 of the spacer elements 30 have a plurality of longitudinally of the housing 2 successively arranged air passage openings 36 whose flow resistance of the housing 2 passing air flow is adjusted approximately to the flow resistance of the individual radiator elements 14, so that on the air outlet side of the housing 2 by Mixing of the partial flows through the openings 10 on the one hand and through the air passage openings 36 on the other hand in the temperature uniform total flow of exiting air results.
  • FIG. 1a shows an alternative embodiment, which substantially the above with reference to FIG. 1 corresponds described.
  • the same components are identified by the same reference numerals.
  • the main difference of in FIG. 1 A shown embodiment with respect to in FIG. 1 shown is that instead of a single housing cover 6 with a plurality of unit cover connected to a housing cover sections 32, this in the embodiment in FIG. 1 a are provided as separate housing cover segments 38.
  • the housing cover segments 38 extend in the present case over the entire length of the housing 2 and are fitted in recesses 40, which are recessed at formed by the lower housing part 4 cross bars 42.
  • the respective spacer elements 30 extend in the longitudinal direction of the housing 2 as far as the transverse member 42.
  • FIGS. 2 and 3 illustrate a spring means 44, which is formed in the present case only the outer heating element 24 associated. More similar or identically designed spring means may be provided adjacent to further heating elements 24 and / or between two heating elements such that the spring biasing means 44 caused by the elastic biasing force, the layers of adjacent heating elements 24 against each other under bias.
  • the spring device 44 has integrally formed on the lower housing part 4 supporting elements 46 which are chamfered end with an inclined surface 48.
  • a plurality of support members 46 is formed by the lower housing part 4.
  • the lower housing part 4 also forms fixing elements 50 whose active surfaces are parallel to the active surfaces of the support elements 46, ie which extend at right angles to a bottom 52 of the lower housing part.
  • the fixing elements 50 are arranged offset relative to the support elements 46.
  • the fixing elements 50 are located approximately in the middle between adjacent support elements 46.
  • a spring band 54 forming a plastic chord in the sense of the present invention is introduced into the lower housing part 4, which extends substantially over the entire length of the housing 2 , It will the spring band 54 is slightly biased between the fixing member 50 and adjacent support members 46 and thus held in the lower housing part 4.
  • spacer ribs 56 are formed on the housing lower part 4, which space the PTC elements 18 of a PTC heating element 16 in the longitudinal direction of the housing 2 from one another.
  • the spacer ribs 56 extend in the present case over the entire height of the lower housing part 6 and thus also form a contact surface for the upper housing part 4.
  • the fixing elements 50 are arranged in the longitudinal direction of the housing 2 approximately at the height of the spacer ribs 56. In any case, at the height of the PTC elements 18 there are no fixing elements 50. The in FIG.
  • the contact elements 58 protrude from the bottom 52 of the lower housing part 4. However, they are not connected end to the housing lower part 4, but cut free via a slot 62, for example, with respect to the cross member 42 or a bearing element 64 which protrudes from the housing bottom at right angles and forms an abutment for the fixing element 50. Due to this configuration, the abutment elements 58 can be pivoted about their feet about an axis which extends parallel to the longitudinal direction of the housing 2.
  • the PTC elements 8 are deposited on a retaining rib 66, which likewise protrudes from the bottom 52 of the lower housing part 4 and is provided between the transverse member 42 and the adjacent spacer rib 56 or between adjacent spacer ribs 56. With this retaining rib 66, the PTC elements 18 are also accommodated in the housing 2 at a predetermined distance from the bottom 52 within the receiving space 60.
  • the substantially lid-shaped housing upper part 8 has at its the receiving space 60 facing housing cover surface 67 a plurality of approximately at right angles from the housing cover portion 32 projecting, in the cross-sectional view FIG. 2 formed on both sides of a spherical shape, which forms the counter-element to the support elements 46 displacer 68.
  • These displacers 68 are integrally formed on the upper housing part 4 formed and - relative to the longitudinal direction of the housing 2 - provided between adjacent support members 46.
  • a plurality of spring means 44 are provided in the longitudinal direction of the housing 2, which are each separated by fixing elements 50 with associated bearing elements 64.
  • Each of the spring devices 44 shown has over the longitudinal extension of the contact element 58 extending and limited thereto displacement 58, which form a counter element to the contact element and associated, alternately provided for this purpose support members 46.
  • the spring band 54 usually runs in one piece over the entire length of the housing 2 ,
  • the spring preload generated in this case is forwarded via the contact element 58 to the elements of the heating element 24. Due to the spherical configuration of the displacement element 60 and the contact element 58, the spring force is focused on the central region of the receiving space (in the vertical direction), i. on the area in which the PTC heating elements 16 are located.
  • a sufficient electrical contact between the metal strips 20 and the PTC elements 18 of a heating element 24 is effected as well as a sufficient thermal contact between the PTC elements 18 via the metal strips 20 to the radiator elements 14th
  • the spring band 54 may be a plastic band.
  • a spring device 44 which merely has to bias the elements of a heating element 24 in a single compartment 26, which is adapted precisely to the dimensions of the heating element 24, the spring force exerted by a plastic spring element is sufficient. to achieve a good electrical and thermal contact between the PTC elements 18 and the other elements of the heating element 26.
  • FIGS. 4 to 6 illustrate an alternative embodiment of a spring means, which is designated for this embodiment by reference numeral 70.
  • the spring device 70 has similar to the support member 56 of the previously discussed embodiment, a support member 72 which protrudes from the bottom 52 of the housing base 4 and cooperates with a projecting from the housing cover portion 32 displacement element 74 as a counter element to a formed by a silicone cord 76 spring element between alternating support points elastic bias.
  • the support element 72 has an inclined surface 78, through which a funnel-shaped taper for receiving the silicone cord 76 results, which is open at the top and extends between the support element 72 and contact elements 80 at right angles to the bottom 52.
  • the abutment elements 80 are formed in cross-section as the contact elements 58 and have in addition to the right angles to the bottom 52 extending rear side in the central region a spherical configuration through which a tapered sliding surface 84 and approximately at mid-height of the receiving space 60, a contact projection 86 is formed which cooperates with a neighboring radiator element 14.
  • a support element 72 is provided between adjacent and mutually associated contact elements 80.
  • the integrally formed on the housing cover portion 32 displacement elements 74 are in the longitudinal direction at the level of the abutment members 80.
  • a subsequent to the sliding surface 84 and extending substantially parallel to the bottom 52 support 88 which is formed by the support member 72 is so in the height direction spaced relative to the bottom 52, that resting on the support 88 silicone cord 76 is located approximately at the height of the abutment protrusion 86 of the contact element 80.
  • FIGS. 4 to 6 shown embodiment of a spring device 70 braces only one heating element 24, has been dispensed with the representation, but which may correspond to the heating element 24 according to the previously discussed embodiment.
  • the arrangement of the PTC element 18 is such that it is located at mid-height of the receiving space 60.
  • the heating element 24 is first introduced into the Gefach. Furthermore, the silicone cord 76 is placed on the support 88, so that the longitudinally extending silicone cord 76 between the rear sides 82 of the abutment elements and the sliding surface 74 of the support member 72 is located.
  • the displacement elements 74 act on the rear side 82 of the abutment elements 80 against the silicone cord 76. This is thereby elastically deformed between the alternating support points in the height direction of the receiving space 60.
  • the width of the support member 72 may vary depending on the elasticity of the silicone cord.
  • the abutment elements 80 of the support element 72 may also overlap in the longitudinal direction or even be formed continuously in the region of the spring device 44.
  • FIGS. 6 and 7 show an alternative embodiment with a plastic spring means, which is designated by reference numeral 90 and characterized by two downwardly U-shaped legs, of which a reference element 92 marked counter element is provided with an inclined surface 74 which can slide on a radiator element 14 and transferred to a ubenvorsprung 96.
  • the limb of the exemplary embodiment facing away from the radiator element 14 is to be designated as a spring element 98, since it stores the predominant part of the elastic deformation component integrally formed on the housing cover section 32 by injection molding.
  • the two legs 92, 98 are connected to one another via a web 100.
  • This in FIG. 7 shown upper housing part 4 is manufactured as a one-piece component by means of plastic injection molding. Similar to the investment elements 80 of the in the FIGS.
  • the longitudinal sectional view according to FIG. 8 shows on the side of the lower housing part 4, a spring element 98 associated with the supporting element 106, which forms a sliding surface 108.
  • a plurality of spring devices 90 and associated support elements 106 are provided on the side of the upper housing part 4. Again, the corresponding spring devices are preferably in the longitudinal direction at the height of the PTC elements 18th
  • the elements forming the heating element 24 are inserted into the lower housing part 4.
  • the recorded in the Gefach 24 heating rod 24 is set by closing the housing 2 by applying the upper housing part 6 under tension.
  • the spring element 98 slides past the sliding surface 108. It will from the sliding surface 108 in the region of its foot, that is bent around a bending axis extending in the longitudinal direction of the housing 2. This bend is transmitted via the web 100, which is also resiliently biased.
  • a certain elastic bias also results in the counter-element 92, which is urged against the radiator element 14 as the insertion movement progresses due to the deformation of the spring element 98. In response to this contact force results in a certain elastic deformation of the counter element 92nd
  • spring means 70, 90 are preferably associated with each individual Gefach 26 and thus a single heating rod 24 to put the components contained therein under bias.
  • snap-in connections are provided in the region of the respective spring device, through which the lower housing part is connected to the upper housing part, so that the upper housing part 6 does not lift from the lower housing part 4.
  • the elastic tension of the spring device 70, 90 is secured.
  • latching connections not only in the edge region of the housing 4, but also in the transverse direction in the middle thereof, preferably formed immediately adjacent to a Gefach 26.
  • intermediate walls may be provided between the spacer element 30 and the Gefach, so that a formed for example on the upper housing part 6 locking lug between the partition and the adjacent boundary wall of the Gefaches 26 can enter and lock with a formed on the intermediate wall window opening.
  • a corresponding embodiment is in the FIGS. 9 and 10 clarified.
  • There said partition of the Gefaches 26 is designated by reference numeral 110.
  • An intermediate wall is identified by reference numeral 112.
  • the latching opening within this intermediate wall 112 is designated by reference numeral 114.
  • a with the housing 2 closed in this locking opening 114 einfedernder locking web is in FIG. 10 denoted by reference numeral 116.

Landscapes

  • 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)
  • Baking, Grill, Roasting (AREA)
  • Electric Stoves And Ranges (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Claims (16)

  1. Dispositif de chauffage électrique, en particulier comme chauffage d'appoint pour des véhicules automobiles, avec un boîtier ouvert (2) dans lequel au moins un élément chauffant PTC (16) et des éléments de radiateur (14) sont maintenus sous précontrainte, dans lequel le boîtier (2) comporte une partie supérieure de boîtier (6) et une partie inférieure du boîtier (4) qui laissent des ouvertures (10) libres pour le passage d'un moyen permettant d'irradier les éléments de radiateur, caractérisé
    en ce que la partie inférieure du boîtier (4) comporte au moins un élément de support (46 ; 72 ; 106) dépassant de son fond et en ce que la partie supérieure de boîtier (6) comporte un contre-élément (68 ; 74 ; 92) dépassant de sa surface de couvercle (67) sur l'élément de support (46; 72 ; 106), moyennant quoi l'élément de support (46 ; 72 ; 106) et le contre-élément (68 ; 74 ; 92) interagissent lors de la fermeture du boîtier (2) avec un élément de ressort (54 ; 76 ; 98) en matière synthétique qui est mis sous contrainte entre l'élément de support (46 ; 72 ; 106) et le contre-élément (68 ; 74 ; 92) et retient ainsi une partie de la déformation élastique ainsi obtenu.
  2. Dispositif de chauffage électrique selon la revendication 1, caractérisé en ce que l'élément de ressort (54 ; 76 ; 98) est constitué d'une corde en matière synthétique s'étendant selon la direction longitudinale du boîtier (2), qui est formée par des éléments de support et des contre-éléments pourvus de manière alternée selon sa direction longitudinale (46, 72, 106 ; 68, 74, 92) pour la rétention d'éléments de déformation élastiques.
  3. Dispositif de chauffage électrique selon la revendication 1 ou 2, caractérisé en ce que la corde en matière synthétique est constituée par une bande en matière synthétique (54 ; 76) agencée dans le boîtier.
  4. Dispositif de chauffage électrique selon la revendication 3, caractérisé en ce que la bande en matière synthétique (54 ; 76) est constituée de matière synthétique élastique souple.
  5. Dispositif de chauffage électrique selon l'une des revendications 1, 2 ou 4, caractérisé en ce que la corde en matière synthétique est produite par extrusion et intégrée dans la partie inférieure du boîtier (4) ou dans la partie supérieure de boîtier (6).
  6. Dispositif de chauffage électrique selon l'une des revendications précédentes, caractérisé par un élément de butée (58 ; 80 ; 92) dépassant de la partie inférieure du boîtier (4) ou de la partie supérieure de boîtier (6), grâce auquel la précontrainte est appliquée et qui peut pivoter par rapport à l'élément de boîtier (4, 6) autour d'un axe parallèle à l'élément chauffant PTC (16) et est intégré à l'élément de boîtier (4, 6).
  7. Dispositif de chauffage électrique selon la revendication 5, caractérisé en ce que l'élément de butée (58 ; 80 ; 92) est constitué sur le côté opposé à l'élément de ressort (54 ; 76) d'une surface de glissement inclinée (84).
  8. Dispositif de chauffage électrique selon la revendication 7, caractérisé en ce que le côté arrière opposé à la surface de glissement (84) de l'élément de butée (80) s'étend de manière essentiellement perpendiculaire au fond (52) et en ce qu'une surface oblique (78) de l'élément de support (72) inclinée par rapport à l'élément de butée (80) est inclinée en direction de l'élément de butée (80).
  9. Dispositif de chauffage électrique selon la revendication 8, caractérisé en ce que la surface oblique (78) se poursuit par un support (88) pour la bande en matière synthétique (54 ; 76) qui s'étend de manière essentiellement parallèle au fond (52).
  10. Dispositif de chauffage électrique selon l'une des revendications précédentes, caractérisé en ce qu'une surface de contact (86, 96) transférant une partie des déformations élastiques sur l'élément PTC (18) et/ou l'élément PTC (18) sont pourvus de manière excentrique dans le sens de la hauteur du boîtier.
  11. Dispositif de chauffage électrique selon la revendication 10, caractérisé en ce que la partie inférieure du boîtier (4) ou la partie supérieure de boîtier (6) comporte une nervure de retenue (56) correspondant à au moins un élément PTC (18), ladite nervure s'étendant toujours progressivement en direction longitudinale du boîtier (2) et grâce à laquelle l'élément PTC est agencé à proximité d'un côté d'admission d'air du boîtier (2).
  12. Dispositif de chauffage électrique selon l'une des revendications précédentes, caractérisé en ce que l'élément de ressort (98) constitue avec le contre-élément (92) un agencement en forme de U ouvert vers le fond (52) de la partie inférieure du boîtier (4).
  13. Dispositif de chauffage électrique selon la revendication 12, caractérisé en ce qu'un flasque (100) de l'élément de ressort reliant deux pattes (92, 98) dépassant en direction du fond (52) de la partie inférieure du boîtier (4) est pourvu entre la hauteur moyenne du logement de boîtier et une surface de couvercle lorsque le boîtier est fermé (2).
  14. Dispositif de chauffage électrique selon la revendication 13, caractérisé en ce qu'une patte de ressort (98) pourvue de manière essentiellement parallèle sur le contre-élément (92) est connectée par adhésion ou fusion de matière au couvercle du boîtier (32).
  15. Dispositif de chauffage électrique selon l'une des revendications 12 à 14, caractérisé en ce que l'élément de butée est constitué par le contre-élément (92).
  16. Dispositif de chauffage électrique selon l'une des revendications 12 à 15, caractérisé en ce que l'élément de support (106) comporte une surface de précontrainte en forme de rampe contre laquelle l'élément de ressort (98) glisse lors de la fermeture du boîtier (2).
EP09008078A 2009-06-19 2009-06-19 Dispositif de chauffage électrique Not-in-force EP2266823B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT09008078T ATE520555T1 (de) 2009-06-19 2009-06-19 Elektrische heizvorrichtung
ES09008078T ES2367580T3 (es) 2009-06-19 2009-06-19 Dispositivo calefactor eléctrico.
EP09008078A EP2266823B1 (fr) 2009-06-19 2009-06-19 Dispositif de chauffage électrique
KR1020100058264A KR101317847B1 (ko) 2009-06-19 2010-06-18 전기 가열 장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09008078A EP2266823B1 (fr) 2009-06-19 2009-06-19 Dispositif de chauffage électrique

Publications (2)

Publication Number Publication Date
EP2266823A1 EP2266823A1 (fr) 2010-12-29
EP2266823B1 true EP2266823B1 (fr) 2011-08-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09008078A Not-in-force EP2266823B1 (fr) 2009-06-19 2009-06-19 Dispositif de chauffage électrique

Country Status (4)

Country Link
EP (1) EP2266823B1 (fr)
KR (1) KR101317847B1 (fr)
AT (1) ATE520555T1 (fr)
ES (1) ES2367580T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103009963B (zh) * 2013-01-05 2015-04-01 东风汽车公司 一种具有防盗功能的汽车加热器的安装装置及其安装方法
FR3062898B1 (fr) * 2017-02-14 2021-06-18 Valeo Systemes Thermiques Dispositif de chauffage electrique comprenant un dispositif de limitation du debattement des elements chauffants
FR3078147B1 (fr) * 2018-02-19 2021-10-29 Valeo Systemes Thermiques Cadre d'un dispositif de chauffage electrique comprenant au moins un dispositif de maintien d'elements chauffants
KR101973581B1 (ko) * 2018-12-06 2019-09-02 덕일산업 주식회사 밀착부재를 이용해 내부부품을 밀착시키는 히터
KR101998811B1 (ko) * 2018-12-06 2019-10-01 덕일산업 주식회사 내부부품을 밀착시키는 히터

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5256857A (en) * 1990-08-22 1993-10-26 Texas Instruments Incorporated Finned PTC air heater assembly for heating an automotive passenger compartment
JP2891109B2 (ja) * 1994-07-08 1999-05-17 株式会社デンソー 加熱装置
DE10118600C2 (de) * 2001-04-12 2003-05-28 Webasto Thermosysteme Gmbh Elektrische Heizeinrichtung
DE10143852B4 (de) * 2001-09-06 2008-04-17 Webasto Ag Heizkörper
ES2295713T3 (es) * 2004-02-10 2008-04-16 CATEM GMBH & CO. KG Dispositivo calefactor electrico de poca altura.
ATE399664T1 (de) 2004-07-28 2008-07-15 Behr France Rouffach Sas Heizungsanordnung mit einem heizelement, insbesondere für ein kraftfahrzeug
DE102005026238A1 (de) 2005-06-07 2006-12-14 Catem Gmbh & Co. Kg Elektrische Heizeinrichtung
EP2025541B1 (fr) * 2007-07-18 2013-01-02 Eberspächer catem GmbH & Co. KG Elément d'un dispositif de chauffage produisant de la chaleur électrique

Also Published As

Publication number Publication date
KR20100136945A (ko) 2010-12-29
ATE520555T1 (de) 2011-09-15
EP2266823A1 (fr) 2010-12-29
KR101317847B1 (ko) 2013-10-15
ES2367580T3 (es) 2011-11-04

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