EP2637474B1 - Elément chauffant - Google Patents

Elément chauffant Download PDF

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Publication number
EP2637474B1
EP2637474B1 EP12001601.9A EP12001601A EP2637474B1 EP 2637474 B1 EP2637474 B1 EP 2637474B1 EP 12001601 A EP12001601 A EP 12001601A EP 2637474 B1 EP2637474 B1 EP 2637474B1
Authority
EP
European Patent Office
Prior art keywords
housing
heat generating
contact
generating element
wedge
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.)
Active
Application number
EP12001601.9A
Other languages
German (de)
English (en)
Other versions
EP2637474A1 (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 EP12001601.9A priority Critical patent/EP2637474B1/fr
Priority to US13/773,872 priority patent/US9839072B2/en
Priority to CN201310075320.9A priority patent/CN103313444B/zh
Publication of EP2637474A1 publication Critical patent/EP2637474A1/fr
Application granted granted Critical
Publication of EP2637474B1 publication Critical patent/EP2637474B1/fr
Priority to US15/802,892 priority patent/US10993287B2/en
Active 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • H05B2203/016—Heaters using particular connecting means
    • 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 having at least one PTC element, on both sides thereof contact plates, a housing, which forms at least one opening for receiving the at least one PTC element and has a connection side, are exposed at the contact plates associated contact tongues.
  • the heat generating element according to the invention has a wedge element with a broader and a narrower end surface, which are connected to one another via first and second wedge surfaces, wherein the first wedge surface extends parallel to one of the contact plates and the second wedge surface is exposed on the outside of the housing.
  • Such a heat-generating element is from the EP 1 921 896 A1 known.
  • the housing is formed by two housing elements which can be connected to each other and are each formed as a plastic injection molded parts.
  • the contact sheet and on the outside respectively provided thereon insulating layers are thereby encapsulated with the housing element each forming plastic material to form a unit of contact sheet, insulating layer and housing element.
  • Such heat-generating elements are used in particular for heating liquids, especially in a motor vehicle.
  • a typical multiple heat generating elements receiving electrical heater has one or more parallel to each other extending pockets.
  • the pockets separate a circulation chamber for the fluid to be heated from a connection side, in which usually the electrical contacts are exposed and connected. Since the chambers are formed of a metallic and therefore electrically conductive material, a good electrical insulation between the heat-generating element inserted into the pocket and the walls bounding the pocket inside is of great importance for the reliability of the electrical heating device.
  • the generic heat generating elements are usually first inserted into the bag. Thereafter, the wedge member is displaced relative to the inner wall of the pocket and an outer surface of the heat generating element to key the heat generating element in the pocket.
  • the wedge element lies with its first wedge surface parallel to one of the contact plates, usually with an intermediate layer an insulating layer, and with its second wedge surface usually parallel to a slightly tapered inner surface of the pocket. Accordingly, there is a planar contact between the heat generating element and the bag through the intermediary of the wedge element.
  • the other contact plate usually also with the interposition of an insulating layer, on the inner surface of the bag, on the other side with the interposition of the wedge element.
  • this arrangement is essential, since due to the self-regulating properties of the PTC elements for a good, symmetrical as possible and thus mutual heat dissipation is to ensure. Otherwise, the PTC element becomes too hot and the self-regulating properties of the PTC element prevent further absorption of electrical energy for heat generation.
  • the contact sheet must be completely surrounded by an insulating layer, which insulating layer must also cover edge regions of the contact sheet to safely prevent exposure of electrically conductive surfaces on the outside of the heat generating element.
  • the encapsulation of the contact sheet, which is known from the prior art, together with the insulating layer can lead to defects, in particular to the insulating layer, due to the thermal entry during injection molding and / or the injection pressures prevailing in the process. Even microscopic cracks justify the risk of a high rejection, since these are not recognized correctly in the production, so that faulty heat-generating elements are installed in the electric heater and make them unusable altogether.
  • the US 4,223,208 A1 discloses a housing which forms a pocket, in which a PTC element is held with contact plates resting thereon and insulation layers lying on the outside of these contact plates. On the outside of the insulating layers soft films are provided.
  • This layer structure abuts on one side on the pocket of the housing.
  • a wedge element is inserted into the pocket, which clamps the layer structure and is located between an inner wall of the pocket and the outer surface of the soft film.
  • the soft films should thereby thermal expansions due to the operation of the electric heater after the US 4,223,208 A1 compensate. Also, they should cause increased friction, so that the wedge element is not pushed out of the pocket.
  • the present invention seeks to provide a heat generating element which completely or partially avoids the problems described above.
  • the generic heat generating element is further developed in that the sliding plate is immovably connected to the housing.
  • the sliding plate can be positively, positively or cohesively connected to the housing.
  • this is preferably positively connected to the housing.
  • the wedge element moves when tightening the heat generating element in the bag.
  • At this narrower end is preferably provided on the sliding plate one, preferably a plurality of securing tabs, which cooperate with one, preferably a plurality of correspondingly provided for this purpose fuse openings of the housing and are accommodated in these.
  • the sliding plate is connected at its two opposite end portions with the housing.
  • the opposite end portions are formed by those ends of the sliding plate, which are assigned on the one hand, the narrower end surface and on the other hand, the wider end surface of the wedge element and regularly extend substantially parallel to these end surfaces.
  • the corresponding end regions are accordingly usually in the direction of movement of the wedge element before or behind.
  • the sliding plate is preferably connected at its the wider end face of the wedge element associated end by a latching connection form-fitting manner with the housing.
  • This latching connection preferably comprises at least a formed by the sliding plate resilient latching web which cooperates with a housing side provided counter surface.
  • the latching web is usually formed by punching and bending of the sheet metal forming the sheet metal material and preferably projects beyond an end face of the wedge element associated and this area supporting sliding surface of the sliding plate.
  • the latching web is usually located in the width direction centered on the sliding plate and preferably cooperates with a centrally arranged on the housing and integrally formed thereon latching projection. In this way, a simple connection of the sliding plate.
  • the sliding plate can first be introduced via the securing tab in the associated securing opening of the housing and pre-fixed there. A pivoting about the pivot point formed thereby brings the locking bar behind the locking projection, so that the sliding plate is latched at the opposite end portions of the housing with the housing. Both compounds are preferably form-fitting.
  • the sliding plate further preferably has retaining arms, which hold the wedge element displaceable.
  • a structural unit is created, so that the heat-generating element can be used together with the wedge element held displaceably in the pocket.
  • the heat-generating element is first introduced into the pocket and then the wedge element is introduced from above between the heat-generating element and an inner surface of the pocket (see. EP 1 921 896 A1 )
  • the heat-generating element as a unit and thus easily positioned and mounted in the bag. This embodiment may be essential to the invention.
  • a sliding plate which is connected at opposite end portions with the housing, so that the sliding plate on the one hand holds the wedge element and on the other hand securely fixed to the housing, preferably by means of positive engagement with this is connected.
  • the support arms are typically spring arms which project from opposite edges of the slide plate, project beyond the sliding surface for the wedge member and are biased inwardly toward the wedge member, such that these resilient support arms typically engage the wedge member at side surfaces connecting the opposed wedge surfaces and in the region fix the wider end face of the wedge element.
  • the sliding plate for this fixation of the wedge element on the support arms only on one end side, ie the narrower end face of the wedge element associated side with the housing to lock and to fix the wedge member by a cross-housing part so that the wedge element of the sliding surface takes off.
  • the support of the sliding plate by a detent web which is associated with the wider end face of the wedge member and cooperates with the housing, since in such an embodiment, the housing on the connection side less expensive and in particular slimmer can be formed, which is the cycle time for injection molding shortened the housing and also simplifies the mold cavity geometry for molding the housing side of the injection mold.
  • At least one of the contact sheets has a bent-over insertion tab, which is received in an insertion opening formed by the housing.
  • the arched insertion tab extends substantially transversely to a contact surface formed by the contact plate and usually towers over this contact surface, i. goes inward toward the interior of the housing and extends in the thickness direction of the PTC element.
  • the housing has an insertion opening in which the insertion tab is received. The tuck is usually held with little play, preferably without play in the insertion. Due to the interaction of insertion tab and insertion opening, the contact plate is held in a direction parallel to its contact surface for the at least one PTC element substantially immovably on the housing.
  • the contact plate is, however, connected by inserting the tuck into the insertion only after the manufacture of the housing with this. Accordingly, the housing of the heat-generating element can be made much easier. In particular, it may be formed in one piece, so that the housing is first produced as a simple, uniform injection molded part and later fitted with the layers forming the layer structure.
  • At least one latching projection protrudes from a surface of the push-in tab which is oriented substantially perpendicular to a contact surface for the PTC element, which is formed by the associated contact plate Housing is locked.
  • the latching projection should preferably be formed with regard to low insertion forces as punctiform latching cam and with the housing be locked.
  • a plurality of latching projections can be provided side by side on the surface aligned at right angles to the contact surface for the PTC element.
  • the corresponding latching projection is preferably formed by punching machining of the contact sheet.
  • a locking shoulder which is formed by the housing and which is formed thin-walled in view of the desired low Einbring concept for joining the housing and contact plate, while - as usual with latching connections - in the assembled state, the locking projection surmounted and thus the Hold the contact sheet on the housing in a form-fitting manner.
  • the contact plate can be prepared as a simple stamped and bent part and then joined to the housing in a simple manner.
  • the contact plate preferably has a contact projection between the contact tongue and the contact surface for the at least one PTC element.
  • the housing has a plant shoulder associated with the investment projection.
  • the housing and the contact plate are dimensioned such that the push-in tab can be inserted into the insertion opening when the contact shoulder bears against the contact shoulder by pivoting about the contact shoulder.
  • the investment projection and the housing side associated 6.3ter serve as an assembly aid.
  • the abutment shoulder is located in the region of a receptacle formed by the housing for the contact tongue, preferably a contact lug formed by the contact plate.
  • the contact tongue does not necessarily have to be integrally formed on the contact plate.
  • the contact plate is preferably surmounted on its side facing the tab from a stamped by punching contact lug, which can form the end of the contact tongue or is connected to this.
  • the housing-side receptacle and the contact lug form a guide, which causes, as part of the insertion movement of the contact lug in the recording of the investment projection is necessarily applied against the abutment shoulder.
  • This abutment of the investment projection against the abutment shoulder marks the end of the insertion movement for a fitter. Thereafter, the installer only has to pivot the contact plate around the pivot point thus formed in order to securely insert the insertion tab into the insertion opening.
  • the walls of the housing-side recording thereby also form a positioning aid, on the basis of which the tuck opposite the insertion in the frame the pivoting movement of the contact plate is prepositioned too coarse on the housing.
  • the housing preferably has a passage opening, which is usually part of the above-described receptacle for the contact lug.
  • the passage surrounds circumferentially the contact lug and simplifies the installation of the same.
  • the aforementioned passage opening is preferably formed by an obliquely oriented passage.
  • the passage channel extends obliquely to the direction of extension of the contact plates, which are usually provided parallel to one another and clamp the PTC elements between them.
  • the lead-through channel is oriented obliquely so that the contact lug can be inserted through the lead-through channel at angles relative to its end position employed contact plate parallel to the passage channel limiting walls.
  • the passageway is accordingly from the interior, i. the opening of the housing outwardly inclined towards the center (in the thickness direction) of the housing.
  • the housing is preferably a one-piece housing.
  • This one-piece housing has only a single housing body, wherein the housing is formed in one piece and realized only as a unitary in itself rigid and dimensionally stable component.
  • the FIG. 1 shows a housing marked with reference numeral 2 of an embodiment when connecting this housing 2 with a first contact plate 4.
  • the housing 2 forms an opening 6, the inner peripheral surface of which is integrally formed on the housing 2 formed spacers 8, which have a substantially pyramidal shape , wherein the surfaces of the spacer elements 8, which extend between a formed by the housing 2 flat edge 10 of the opening 6 and the tip of the spacer 8, are concavely shaped.
  • These spacers 8 are used to create PTC elements, the FIG. 2 marked with reference numeral 12.
  • the spacers 8 hold the PTC elements 12 upstanding to the rim 10 and accordingly increase the leakage current path.
  • the housing 2 is formed in the side view substantially wedge-shaped with a front, narrow end 14 and a wider end, which forms a connection side 16 of the housing 2.
  • the opening 6 is bounded by edge surfaces 18, which are provided on both sides of the opening 6 and extend parallel to each other.
  • edge surfaces 18 surrounding the opening 6 are surrounded in the longitudinal direction of the housing 2 and at the front end 14 by a slightly widened outer edge 20, which projects beyond the edge surfaces 18 on both sides and is wedge-shaped in the longitudinal direction of the housing 2, ie at the front end 14
  • the housing 2 further forms a circumferential and widened collar 22, which projects beyond the contour of the outer edge 20 on the connection side 16 outside and forms a support surface 24, via which in a pocket an electric heater built-in housing 2 is supported on the upper side to a heater housing of the electric heater, as is made EP 1 921 896 A1 is known.
  • FIG. 1 Front marked with reference numeral 26 insertion opening serves to attach the in FIG. 1
  • this has an insertion tab 30, which projects beyond a front edge surface 32 of the contact sheet 4 and is formed by punching and bending.
  • the tuck 30 has accordingly a smaller width than the contact plate 4 in the region of the front edge surface 32, which the tuck 30 forward - from the perspective of FIG. 1 - Slightly surmounted and slightly behind.
  • the Einstecklasche 30 is opposite to a formed by the contact plate 4 bearing surface 34 for the PTC elements 12 by 90 ° and projects beyond this contact surface 34 inwards.
  • the insertion tab 30 has an outwardly directed, at right angles to the contact surface 34 extending locking surface 36 which is surmounted by two locking projections 38.
  • the latching projections 38 are formed by punching on the contact sheet 4 forming sheet material and project beyond the locking surface 36 as a convex-shaped locking cams.
  • the insertion opening 26 merges via a convexly curved mouth section 40 into the opening 6, which serves to abut a curved transition region 42 between the abutment surface 34 and the insertion tab 30.
  • the mouth portion 40 is lower than the edge surface 18, so that in the installed state, the contact plate 4 is arranged flush with the edge surface 18.
  • a rear edge surface 44 of the contact plate 4 is surmounted by a contact lug 46, which is like the Einsteckfahne by free punching with respect to the associated edge surface 44 significantly smaller width is provided and projects beyond this.
  • the contact lug 46 forms at its free end a contact tongue 48, via which the electrical connection to the contact plate 4 takes place and which projects beyond the housing 2 on the connection side 16. Between this contact tongue 48 and the contact surface 34 of the contact plate 4, this forms a contact projection 50, which is given by free cutting a step in the contact lug 46.
  • the edge surface 18 is pierced by a receptacle 52, the base of which extends parallel to the edge surface 18 and forms a contact surface for the contact lug 46.
  • the receptacle 52 laterally delimiting edge 10 of the housing 2 forms a contact shoulder 54, which is assigned to the abutment projection 50 in such a way that, when the contact tongue 48 is inserted, it abuts into a passage opening 56 recessed on the housing 2, whereby the insertion movement comes to an end.
  • the abutment projection 50 abuts against the abutment shoulder 54 in the manner of a swivel joint.
  • the insertion tab 30 is forcibly pivoted into the insertion opening 26 and fastened therein by co-operation of the locking projections 38 with a housing-side shaped locking projection 58 (see Figure 6) positively.
  • the passage opening 56 is formed by an obliquely oriented passage 60.
  • This oblique passage channel 60 is formed by a flattening 62 directed towards the center - in the width direction - which projects away from the edge surface 18, and a flattening 64 extending in parallel thereto and provided on a wall defining the passage opening 56 inside of the collar 22 is formed. It can be provided to form the passageway 60 also only the flattening 64 and be dispensed with the inclined surface 62.
  • the oblique passageway 60 extends outwardly from the edge surface 18 toward the connection side 16 toward the widthwise center.
  • the insertion of the contact lug 46 is facilitated by the passage opening 56 at obliquely aligned to the edge surface 18 contact plate 4.
  • the the opening 56 delimiting walls also lead to alignment of the contact plate 4 with its longitudinal edges 66 parallel to the associated edges 20 of the housing 2, so that the contact plate 4 is already aligned after insertion of the contact lug 46 in the passage opening 56 so that the tuck 30 is aligned with the insertion opening 26.
  • the housing 2 is rotated in the context of assembly, so that the in FIG. 1 page shown above comes down.
  • This position is in FIG. 2 clarified.
  • a substantially identical to the contact plate 4 formed further contact plate 68 in the above with reference on FIG. 1 described manner aligned with the housing 2 and locked with this.
  • the contact plate 68 is formed substantially identical to the contact plate 4 with the difference that to the individual PTC elements 12 each formed by punching and bending spring tongues 70 to improve the electrical contact a flat contact surface 72 of the contact plate 68 are formed outstanding.
  • a U-shaped recessed groove 74 is provided between the locking surface 18 and the outer edge 20.
  • This groove 74 surrounds the U-shaped in contact with the above-described manner mounted contact plate 4 and 68 and serves to receive a sealant 76 which is introduced into the groove 74.
  • This sealant 76 may have adhesive properties and is used for sealing and optionally also fixing a marked with reference numeral 78 insulating layer on the outside of the contact plate 4 and 68.
  • This insulating layer 78 has present a two-layer structure with a silicone film and a glass fiber mat connected thereto. Such an insulating layer 78 exhibits a high electrical breakdown strength and can be produced with an exact thickness as a substantially incompressible insulating layer 78.
  • the contact plates 4 and 68 are insulated from the environment.
  • a marked with reference numeral 80 sliding plate placed on the in FIG. 2 upper side above a marked with reference numeral 80 sliding plate placed.
  • This sliding plate 80 has at its front end 14 of the housing 2 associated end two locking tabs 82, each of which is in each case substantially identical to the insertion tabs 30 are formed with the difference that each of the locking tabs 82 is surmounted only by a locking projection 38.
  • Corresponding to the two side by side provided in the width direction locking tabs 82 are on the housing 2 backup openings 84 recessed.
  • the sliding plate 80 is introduced in the manner previously described with reference to the contact plate 4 with its locking tabs 82 in the associated securing holes 84 and positively connected to the housing 2.
  • FIG. 80 is introduced in the manner previously described with reference to the contact plate 4 with its locking tabs 82 in the associated securing holes 84 and positively connected to the housing 2.
  • the securing holes 84 are slightly conically widened upward, so that the sliding plate 80 is pivotable about the hinge formed between the locking hole 84 and locking tab 82 in limits. After the insertion of the securing tabs 82 in the securing holes 84 takes the sliding plate 80 in FIG. 3 shown position. Thereafter, the sliding plate 80 is applied over the entire surface against the housing 2.
  • the sliding plate 80 has at its the connection side 16 facing front end 86 a latching web 88 which is formed by punching and bending of the sliding plate 80 ausformenden sheet material and formed by the sliding plate 80 sliding surface 90 and is hook-shaped, so that the latching web 88 a is formed substantially perpendicular to the sliding surface 90 extending first portion 92 and in turn at right angles thereto and parallel to the sliding surface 90 inwardly extending second portion 94 is formed.
  • To increase the flexural rigidity of the locking web 88 of this is formed by a bending formed by bending, extending in the longitudinal direction of the housing 2 bead 96, which is bent outwards.
  • the second section 94 has a funnel-shaped outwardly widening free end.
  • cheeks 98 By punching and bending are in the upper third of the sliding plate 80, i. that area, which is assigned to the connection side 16, formed cheeks 98, which limit the sliding surface 90 edge, but in the mounted state not higher above the edge surfaces 18 protrude than the wedge-shaped outer edges 20 at the level of the corresponding cheeks 98.
  • the cheeks 98 go connection side in spring arms 100 over, which are cut free relative to the flat surface 90 and inwardly arc.
  • the collar 22 is on in the FIGS. 2 to 4 shown side provided with two large apertures 102, between which a support web 104 is integrally formed on the housing 2, which forms an inwardly projecting latching projection 106 at its free end.
  • the latching projection 106 lies within an envelope surface around the collar 22.
  • the wedge member 108 has a broader end surface labeled 110, which is associated with the terminal side 16, and a narrower end surface, indicated at 112, associated with the forward end 14.
  • the wedge element 108 has a width such that the wedge element 108 is frictionally held between the spring arms 100.
  • the wedge member 108 is further overlapped by the second portion 94 of the locking bar 88 and accordingly held positively between this portion 94 and the sliding surface 90. In this starting position lies an in FIG.
  • FIG. 5 illustrates, the front free end of the second portion 94 of the locking ridge 88 is still within the support surface 24, so that the positioning of the heat generating element 120 to the heater housing is not affected by the support of the wedge member 108.
  • the insertion of the wedge element is carried out by inserting two tool projections through the opening 102.
  • the wedge element 108 has at its widened end 110 a trough, so that the corresponding tools are well positioned on the wedge element 108.

Landscapes

  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Resistance Heating (AREA)

Claims (16)

  1. Elément de production de chaleur (120), comprenant au moins un élément PTC (12) (à coefficient de température positif), des tôles de contact (4, 68), qui y sont en appui de surface sur deux côtés, un boitier (2), qui forme au moins une ouverture (6) destinée à accueillir ledit au moins un élément PTC (12) et possède un côté de raccordement (16) au niveau duquel se trouvent des fiches de contact (48) associées aux tôles de contact (4, 68) et en position dégagée, l'élément de production de chaleur comprenant en outre un élément en coin (108) avec une surface d'extrémité plus large et une surface d'extrémité plus étroite (110; 112), qui sont reliées par l'intermédiaire d'une première et d'une deuxième surfaces de coin (114, 116), la première surface de coin (114) s'étendant parallèlement à l'une des tôles de contact (68) et s'appuyant contre celle-ci avec interposition d'une tôle de glissement (80), et la deuxième surface de coin (116) étant dégagée sur le côté extérieur du boitier (2),
    caractérisé
    en ce que la tôle de glissement (80) est reliée de manière non coulissante au boitier (2).
  2. Elément de production de chaleur (120) selon la revendication 1, caractérisé en ce que la tôle de glissement (80) est reliée par complémentarité de formes au boitier (2).
  3. Elément de production de chaleur (120) selon la revendication 1 ou la revendication 2, caractérisé en ce que la tôle de glissement (80) comporte une patte d'arrêt de sécurité (82), qui est reçue dans une ouverture d'arrêt de sécurité (84) formée par le boitier (2).
  4. Elément de production de chaleur (120) selon la revendication 3, caractérisé en ce que l'ouverture d'arrêt de sécurité (84) est associée à la surface d'extrémité la plus étroite (112) de l'élément en coin (108).
  5. Elément de production de chaleur (120) selon l'une des revendications précédentes, caractérisé en ce que la tôle de glissement (80) est reliée au boitier (2), au niveau des zones d'extrémité opposées (14, 16).
  6. Elément de production de chaleur (120) selon la revendication 1 ou la revendication 2, caractérisé en ce que la tôle de glissement (80) est reliée par complémentarité de formes, au niveau de son extrémité associée à la surface d'extrémité la plus large (110) de l'élément en coin (108), au boitier (2), à l'aide d'une liaison par encliquetage (88, 106) possédant au moins une languette d'encliquetage élastique (88) formée par la tôle de glissement (80).
  7. Elément de production de chaleur (120) selon la revendication 6, caractérisé en ce que la languette d'encliquetage (88) dépasse d'une extrémité frontale (86) d'une surface de glissement (90) associée à l'élément en coin (108) et supportant celui-ci à plat.
  8. Elément de production de chaleur (120) selon la revendication 6 ou la revendication 7, caractérisé en ce que la languette d'encliquetage (88) interagit avec une protubérance d'encliquetage (106) agencée de manière centrale sur le boitier (2) et formée d'un seul tenant avec ce dernier.
  9. Elément de production de chaleur (120) selon la revendication 8, caractérisé en ce que la languette d'encliquetage (88) surmonte l'élément en coin (108) dans une position initiale.
  10. Elément de production de chaleur (120) selon l'une des revendications précédentes, caractérisé en ce que la tôle de glissement (80) comporte des bras de maintien (100), qui maintiennent l'élément en coin (108) de manière à ce qu'il puisse coulisser.
  11. Elément de production de chaleur (120) selon la revendication 10, caractérisé en ce que l'un au moins des bras de maintien est réalisé sous forme de bras élastique (100).
  12. Elément de production de chaleur (120) selon l'une des revendications précédentes, caractérisé en ce que l'une au moins des tôles de contact (4, 68) comporte une patte enfichable (30) coudée, qui est reçue dans une ouverture d'emmanchement (26, 28) formée par le boitier (2).
  13. Elément de production de chaleur (120) selon la revendication 12, caractérisé en ce que d'une surface (36) de la patte enfichable (30), qui est orientée sensiblement de manière perpendiculaire à une surface d'appui (34) pour l'élément PTC (12), fait saillie au moins une protubérance d'encliquetage (38), qui est encliquetée avec le boitier (2).
  14. Elément de production de chaleur (120) selon l'une des revendications précédentes, caractérisé en ce que la tôle de contact (4) présente entre la fiche de contact (48) et la surface d'appui (34), une protubérance d'appui (50), en ce que le boitier (2) présente un épaulement d'appui (54) associé à la protubérance d'appui (50), et en ce que le boitier (2) et la tôle de contact (4) sont dimensionnés de manière telle, que la patte enfichable (30) peut, lorsque la protubérance d'appui (50) s'appuie contre l'épaulement d'appui (54), être insérée dans l'ouverture d'emmanchement (26), par pivotement autour de l'épaulement d'appui (54).
  15. Elément de production de chaleur (120) caractérisé en ce que l'autre tôle de contact (68) est également configurée selon l'une des revendications 12 à 14.
  16. Elément de production de chaleur (120) selon l'une des revendications 12 à 15, caractérisé en ce que le boitier (2) possède une ouverture de passage (56), qui est formée par un canal de traversée (60) d'orientation oblique, et est destinée à une extrémité munie de la fiche de contact (48), d'une patte de contact (46) formée par découpage sur la tôle de contact (4, 68) .
EP12001601.9A 2012-03-08 2012-03-08 Elément chauffant Active EP2637474B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12001601.9A EP2637474B1 (fr) 2012-03-08 2012-03-08 Elément chauffant
US13/773,872 US9839072B2 (en) 2012-03-08 2013-02-22 Heat generating element with connection structure
CN201310075320.9A CN103313444B (zh) 2012-03-08 2013-03-08 发热元件
US15/802,892 US10993287B2 (en) 2012-03-08 2017-11-03 Heat generating element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12001601.9A EP2637474B1 (fr) 2012-03-08 2012-03-08 Elément chauffant

Publications (2)

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EP2637474A1 EP2637474A1 (fr) 2013-09-11
EP2637474B1 true EP2637474B1 (fr) 2016-08-17

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EP (1) EP2637474B1 (fr)
CN (1) CN103313444B (fr)

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DE102017123549A1 (de) * 2017-10-10 2019-04-11 Eichenauer Heizelemente Gmbh & Co. Kg Tankheizung
DE102017223782A1 (de) * 2017-12-22 2019-06-27 Eberspächer Catem Gmbh & Co. Kg Wärmeerzeugendes Element einer elektrischen Heizvorrichtung
DE102018127862A1 (de) * 2018-11-08 2020-05-14 Eichenauer Heizelemente Gmbh & Co. Kg Durchlauferhitzer
DE102019211567A1 (de) 2019-08-01 2021-02-04 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
US11105532B2 (en) * 2019-08-01 2021-08-31 Eberspächer Catem Gmbh & Co. Kg Electric heating device and method for its manufacture
DE102019211569B4 (de) * 2019-08-01 2022-05-05 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung und Verfahren zu deren Herstellung
DE102019211565A1 (de) * 2019-08-01 2021-02-04 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung und Verfahren zu deren Herstellung
CN110454969B (zh) * 2019-08-02 2023-05-30 乔路铭科技股份有限公司 一种ptc电加热器
DE102019216481A1 (de) * 2019-10-25 2021-04-29 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
DE102020201571A1 (de) 2020-02-10 2021-08-12 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung und Verfahren zu deren Herstellung
DE102020113402A1 (de) * 2020-05-18 2021-11-18 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
DE102020117366A1 (de) 2020-07-01 2022-01-05 Eberspächer Catem Gmbh & Co. Kg Elektrische Steuervorrichtung, insbesondere für eine elektrische Heizvorrichtung
DE102021104680A1 (de) 2021-02-26 2022-09-01 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
DE102021106299A1 (de) 2021-03-16 2022-09-22 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
DE102021110624A1 (de) 2021-04-26 2022-10-27 Eberspächer Catem Gmbh & Co. Kg Elektrische heizvorrichtung und verfahren zu deren herstellung
DE102023101295A1 (de) 2023-01-19 2024-07-25 Eberspächer Catem Gmbh & Co. Kg PTC-Heizvorrichtung und Verfahren zu deren Herstellung

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DE2816076A1 (de) * 1978-04-13 1979-10-25 Siemens Ag Heizer mit ferroelektrischem keramik-heizelement
DE3065380D1 (en) * 1979-09-28 1983-11-24 Siemens Ag Heating arrangement using a p.t.c. resistance heating element
JPH07230874A (ja) * 1994-02-15 1995-08-29 Murata Mfg Co Ltd 熱溶融樹脂吐出装置
EP1931176B1 (fr) * 2006-10-25 2011-10-05 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique et son procédé de fabrication
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EP2017103B1 (fr) * 2007-07-18 2016-05-04 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique
ES2382138T3 (es) * 2007-07-18 2012-06-05 Eberspächer Catem Gmbh & Co. Kg Dispositivo de calefacción eléctrico

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EP2637474A1 (fr) 2013-09-11
CN103313444A (zh) 2013-09-18
CN103313444B (zh) 2015-08-26

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