EP3863373A1 - Dispositif de chauffage électrique et son procédé de fabrication - Google Patents

Dispositif de chauffage électrique et son procédé de fabrication Download PDF

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Publication number
EP3863373A1
EP3863373A1 EP21155256.7A EP21155256A EP3863373A1 EP 3863373 A1 EP3863373 A1 EP 3863373A1 EP 21155256 A EP21155256 A EP 21155256A EP 3863373 A1 EP3863373 A1 EP 3863373A1
Authority
EP
European Patent Office
Prior art keywords
heater housing
receiving pocket
ptc element
heating device
ptc
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.)
Granted
Application number
EP21155256.7A
Other languages
German (de)
English (en)
Other versions
EP3863373B1 (fr
Inventor
Daniil Salahub
Patrick Kachelhoffer
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
Publication of EP3863373A1 publication Critical patent/EP3863373A1/fr
Application granted granted Critical
Publication of EP3863373B1 publication Critical patent/EP3863373B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • F24H9/1827—Positive temperature coefficient [PTC] resistor
    • 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
    • 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
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0018—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0464—Two-piece frames, e.g. two-shell frames, also including frames as a central body with two covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0476—Means for putting the electric heaters in the frame under strain, e.g. with springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • H05B3/02—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
    • 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
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • 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
    • H05B3/32—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulators on a metallic frame
    • 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
    • F24H2250/00—Electrical heat generating means
    • F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC
    • 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
    • H05B2203/021—Heaters specially adapted for heating liquids
    • 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
    • H05B3/04—Waterproof or air-tight seals for heaters

Definitions

  • the present invention relates to an electrical heating device having a housing with a partition wall which divides a connection chamber from a heating chamber for emitting heat. At least one receiving pocket protruding as a heating rib into the heating chamber protrudes from the partition. A PTC heating device is provided in this pocket. Furthermore, a pressure element is accommodated in the pocket, which keeps the heat extraction surfaces of the PTC element against opposite inner surfaces of the accommodation pocket.
  • the PTC heating device has at least one PTC element and conductors that are electrically conductive.
  • the conductor tracks are connected to the PTC element in an electrically conductive manner. This connection can be a form-fitting and / or force-fitting and / or material connection.
  • the EP 2 337 425 A1 a solution in which a conductor track resting on a main side surface of the PTC element is provided as a sheet metal piece with contact projections bent out of the plane of the sheet metal piece.
  • the contact projections only serve to improve electrical contacting of the PTC element.
  • the receiving pocket tapers towards its lower closed end. Accordingly, the introduction opening, which opens to the connection chamber, is wider than the lower closed end of the receiving pocket.
  • the PTC elements and the contact plates resting on them on both sides are usually clamped in the receiving pocket with a wedge-shaped pressure element with an interposition of at least one insulating layer between the conductor tracks and opposing inner surfaces of the receiving pocket.
  • This wedge element ensures that the layers of the layer structure are clamped against one another in the receiving pocket.
  • These layers are at least the PTC elements and are at right angles to the direction of force action of the wedge element extending conductor tracks, usually contact plates, and at least one insulating layer.
  • the PTC heating device comprises a pocket-shaped heater housing which has opposite side sections which are connected to one another via a bottom section and which contains the PTC element and the conductor tracks records.
  • the pocket-shaped heater housing accordingly forms a receptacle for at least the PTC heating element.
  • the pocket-shaped heater housing is wedge-shaped in cross section in order to enable uniform heat-conducting contact of the heater housing designed as a pressure element on the inner surfaces of a receiving pocket which tapers towards its lower end facing away from the connection chamber.
  • Pressing in a wedge as a pressure element can lead to voltage peaks, which can break the ceramic PTC element or a ceramic insulating layer within the receiving pocket.
  • the wedge element used as a pressure element in the prior art may not be thick enough in the specific application so that it basically sits ineffectively on the lower end of the receiving pocket. If, on the other hand, the free space remaining before the introduction of the wedge element is too small, this results in the height direction of the receiving pocket, ie between the lower end and the Inlet opening only insufficient coverage of the heat extraction surface of the PTC element. As a result, the PTC element heats up too much and prevents further consumption of power current. The efficiency of the PTC element is therefore poor.
  • the present invention seeks to at least partially remedy the aforementioned problems.
  • the receiving pocket protrudes into the heating chamber as a heating rib in a manner known per se.
  • the receiving pocket is usually formed in one piece on the partition.
  • the receiving pocket is usually made of a material that conducts heat well, usually metal.
  • the receiving pocket by itself or in conjunction with the partition can be produced by deep drawing or casting of a metal.
  • the receiving pocket is preferably made of aluminum and is formed in one piece on the partition wall by forming, in particular by deep drawing.
  • the receiving pocket - like the receiving pocket known from the prior art - preferably has a wedge-shaped cross-sectional shape which extends towards the bottom of the receiving pocket, i.e. H. the end of the heating rib protruding into the heating chamber is tapered.
  • the current can be introduced directly through the heater housing, which in this case forms the conductor track.
  • two conductor tracks which are assigned different polarity, are received as separate components in the heater housing and are each electrically isolated from the heater housing via an insulating layer.
  • the insulating layers provided parallel to the opposite main side surfaces of the PTC element can be formed from a single film wrapped around the PTC element on the underside.
  • the PTC element can be received in a positioning frame made of an electrically insulating material, which positions the PTC element (s) and spaced them apart, so that the positioning of the positioning frame in the heater housing results in a predetermined alignment and arrangement of the PTC element (s) is reached in the receiving pocket.
  • This position frame can be covered on the outside with the insulating layers or surrounded by a single insulating layer.
  • the heater housing is usually first equipped with the elements received therein, ie the PTC element of the at least one conductor track and the insulating layer that may be provided. Then the heater housing is placed in the receiving pocket. Then the plastic deformation takes place.
  • the heating rib can be plastically deformed by using a deformation tool directly interacts with the heating rib.
  • a deformation tool can also act against the heater housing in order to bring about the plastic deformation according to the invention from the inside of the receiving pocket.
  • an intimate, plastically deformed bond is achieved between the heater housing and the inner surface of the receiving pocket.
  • the PTC element is arranged firmly, in particular vibration-proof and with good heat conduction in the heat path between the PTC element and the side surface of the heating rib.
  • the main side surfaces are usually those surfaces which have the greatest extent in the length or width direction of the PTC element.
  • the end face surfaces connect these main side faces.
  • the PTC element is usually cuboid and has a much greater extent in the length or width direction than in the height or thickness direction.
  • the thickness direction is usually at least 5 times smaller than one of the dimensions in the length and / or width direction.
  • the main side surface is spanned by the two extensions in length and width.
  • the heater housing is materially connected to the receiving pocket, particularly as a result of the plastic deformation, particularly preferably cold-welded.
  • the plastic deformation of the heater housing and / or receiving pocket has to take place in such a way that a material connection, in particular formed by welding, results between the heater housing and the receiving pocket.
  • the following consideration relates in particular to a cross-sectional view through the PTC element, which intersects the upper and lower end faces and extends parallel to the edge-side end faces of the PTC element.
  • at least one surface of the heater housing resting against the receiving pocket is convex.
  • This shape of the heater housing can relate to the state before the deformation.
  • a convex configuration also results in a deformed configuration in which the heater housing rests with a convex surface against the inner surface of the receiving pocket.
  • the inner pocket can have been deformed in a concave outward direction, corresponding to the convex configuration of the heater housing.
  • At least one fixing lip is formed on the heater housing by an undercut.
  • This fixing lip is at least partially plastically deformed by the heater housing being pressed into the receiving pocket and placed against the inside of the receiving pocket.
  • This development can be derived from the consideration that a kind of barb or the like is formed by a slightly deforming fixing lip, which at least after the plastic deformation in an improved manner anchoring the heater housing in the Can effect receiving pocket.
  • the fixing lip can be provided at any point in the height direction, ie the direction in which the heater housing is inserted into the receiving pocket. With a view to the best possible heat extraction between the main side surfaces and the heating rib, however, it is preferable to provide the corresponding fixing lip close to the bottom of the receiving pocket.
  • the present invention proposes providing the heater housing with two legs and a heater housing base connected to them.
  • the heater housing forms an essentially U-shaped or V-shaped receiving space for the PTC element and the at least one conductor track, the inner walls of which can be aligned parallel to one another.
  • Said fixing lip is provided on at least one, preferably on two legs, the at least one fixing lip being provided in the area of the heater housing base.
  • the bottom is that area which lies in front of the PTC element in the direction in which the heater housing is inserted into the receiving pocket.
  • the heater housing has, at a rear end in the press-in direction, a contact surface which is adapted to be used for attaching a pressing tool.
  • This contact surface can be formed by an essentially flat surface extending transversely to the press-in direction.
  • the contact surface can also be formed by a trough-shaped depression.
  • the contact surface is designed to be adapted to the attachment of a pressing tool.
  • This pressing tool usually acts from the connection chamber on the heater housing in order to press the heater housing in the receiving pocket, in particular to plastically deform it and thus cold-weld it in the receiving pocket. This usually takes place when the heater housing is inserted into the receiving pocket.
  • the heater housing can have at least one inwardly directed locking projection.
  • This locking projection usually lies flat in the finished product in the direction of the PTC element, for example against the insulating layer.
  • the locking projection can act in the manner of a barb, which prevents the PTC element from being inadvertently detached from the heater housing, which may be open at the top.
  • this locking projection may basically be integrated into a flat contact surface that extends parallel to a main side surface of the PTC element and, for example, forms a contact surface for the insulating layer.
  • the heater housing in which the heater housing is initially equipped with the aforementioned components and then inserted into the receiving pocket, the heater housing is gripped by an insertion tool for insertion.
  • opposing legs of the heater housing are usually gripped by the insertion tool and pivoted towards one another.
  • the heater housing is placed against the PTC element by the insertion tool with elastic and / or plastic deformation before it is inserted into the receiving pocket.
  • the installation can take place directly against the PTC element or with the interposition of an insulating layer or the contact plate.
  • the previously mentioned, inwardly directed locking projection of the heater housing is plastically deformed with this methodical procedure, so that a flat opposing surface is formed for the PTC element on both main sides of the heater housing on which the PTC element is directly or indirectly below Intermediate layer of the contact plate and / or the insulating layer is applied.
  • the Figure 1 shows a housing 100 of an electrical heating device, which comprises a base element 102, a housing base 104 and a housing cover 106.
  • the housing base 104 forms a partition 108 which extends parallel to the housing base 102 and which separates a circulation or heating chamber 110 from a connection chamber 112.
  • at least the housing base 104 is made in one piece from aluminum.
  • Heating ribs 114 protrude from the partition wall 108 in the direction of the heating chamber 110. These heating ribs are conically tapered towards their fine end at an angle of approximately 2.5 ° and form a receiving pocket 116 with inner surfaces 118 lying opposite one another.
  • the interior of the heating rib 114 and the connection chamber 112 are fluidically separated from the heating chamber 110.
  • the receiving pockets 116 are each equipped with PTC heating devices 2.
  • PTC heating devices 2 can be inserted one behind the other in the longitudinal direction of the heating ribs 114 in the individual receiving pockets 116.
  • the PTC element 12 is located in a circumferentially enclosed receptacle of a position frame 16 made of insulating material, of which in Figure 1 only the upper and lower frame bars 18, 20 can be seen.
  • the PTC element 12 usually projects beyond the frame spars 18, 16 in the thickness direction, ie a thickness direction of the receiving pocket 116, so that the electrically conductive contact of the contact plates 10 on the PTC element 12 is not impaired by the positioning frame 16.
  • the above-described elements of the PTC heating device 2 are accommodated in the heater housing 4, which in the present case is formed from aluminum and produced by extrusion and cut to length.
  • the width of this heater housing 4 corresponds in the present case approximately the width of the PTC element 12.
  • the width direction extends transversely to the plane of representation Figure 2 .
  • the further dimension of the PTC element 12 to be recognized here in addition to the thickness is the length. This extension roughly corresponds to the direction in which the PTC heating device 2 is inserted into the receiving pocket 116.
  • the in Figure 2 The right leg 6 of the heater housing 4 is thickened compared to the left leg and has a contact surface 26 which extends essentially transversely to the insertion direction and which is flat and continuous over the width of the heater housing 4. Above this contact surface 26, the right leg 6, like the left leg 6, is also designed as an essentially thin and flat plate.
  • the sectional view shows fixing lips 28 protruding from the base in the width direction, which protruded further in the transverse direction before the heater housing 4 was inserted into the receiving pocket 116 and were reshaped parallel to the inner surfaces 118 when the heater was inserted into the receiving pocket 16.
  • These fixing lips 28 can act like barbs.
  • the heater housing 4 in the receiving pocket 116 is plastically deformed by the application of a force to the contact surface 26. With this plastic deformation, the heating rib 114 can also be permanently deformed. In any case, the plastic deformation results in a cold welding. For this purpose, it is possible to press against the contact surface 26 with a pressing force of between 1400 and 3000 Newtons.
  • the aluminum material of the heater housing 4 flows through this and is materially connected to the inner surfaces 118 of the receiving pocket 116.
  • the components of the PTC heating device that are accommodated within the heater housing 4, namely the PTC element 12 previously inserted into the receptacle of the positioning frame 16, the contact plates 10 resting thereon and the insulating layer 22 as a unit between the legs 6 of the heater housing 4 introduced before this is introduced into the receiving pocket 116 and pressed therein.
  • the legs 6 are slightly convex. They have a radius of between 500 and 1000 mm.
  • the fixing lips 28 are dispensed with in this exemplary embodiment.
  • an electrically non-conductive plastic web 30 is provided between a bottom of the heating rib 114 and the PTC element 12.
  • the contact surfaces 26 are formed on both sides of the PTC element 12 on the two legs 6.
  • the PTC element 12 can be arranged in the center of the receiving pocket 116 so that the same heat discharge conditions prevail on both main side surfaces of the PTC element 12.
  • the main side surface is that surface which extends in the longitudinal direction and in the width direction of the PTC element 12.
  • the Figure 7 shows a view of the entire width of the receiving pocket 116 and the PTC heating device 12. On the face of the PTC heating device, a certain gap remains to the front boundary of the receiving pocket 116. After the PTC heating device 2 has been inserted into the receiving pocket 116, the remaining space within the Receiving pocket 116 can be filled with a highly thermally conductive, usually electrically insulating compound.
  • FIG. 7 illustrates an inwardly directed locking projection 32.
  • This locking projection 32 is usually flat in the finished product in the direction of the PTC element 12, specifically against the insulating layer 22.
  • the locking projection 32 can act in the manner of a barb, which prevents the PTC element 12 from being accidentally released from the heater housing 4.
  • this locking projection 32 is basically integrated into a flat contact surface which extends parallel to a main side surface of the PTC element 12 and in the present case forms a contact surface for the insulating layer 22.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
EP21155256.7A 2020-02-10 2021-02-04 Dispositif de chauffage électrique et son procédé de fabrication Active EP3863373B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020201571.6A DE102020201571A1 (de) 2020-02-10 2020-02-10 Elektrische Heizvorrichtung und Verfahren zu deren Herstellung

Publications (2)

Publication Number Publication Date
EP3863373A1 true EP3863373A1 (fr) 2021-08-11
EP3863373B1 EP3863373B1 (fr) 2024-06-19

Family

ID=74553685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21155256.7A Active EP3863373B1 (fr) 2020-02-10 2021-02-04 Dispositif de chauffage électrique et son procédé de fabrication

Country Status (4)

Country Link
US (1) US11619422B2 (fr)
EP (1) EP3863373B1 (fr)
CN (1) CN113260097B (fr)
DE (1) DE102020201571A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019211567A1 (de) * 2019-08-01 2021-02-04 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
DE102019217234A1 (de) * 2019-11-07 2021-05-12 Eberspächer Catem Gmbh & Co. Kg PTC-Heizeinrichtung und elektrische Heizvorrichtung mit einer solchen PTC- Heizeinrichtung und Verfahren zur Herstellung einer elektrischen Heizvorrichtung
DE102020203390A1 (de) * 2020-03-17 2021-09-23 Eberspächer catem Hermsdorf GmbH & Co. KG Elektrische heizeinrichtung und verfahren zu deren herstellung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1872986A1 (fr) 2006-06-28 2008-01-02 Catem GmbH & Co. KG Chauffage électrique
EP2337425A1 (fr) 2009-12-17 2011-06-22 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique et élément produisant de la chaleur d'un dispositif de chauffage électrique
EP2637474A1 (fr) 2012-03-08 2013-09-11 Eberspächer catem GmbH & Co. KG Elément chauffant
EP3101365A1 (fr) * 2015-06-02 2016-12-07 Eberspächer catem GmbH & Co. KG Procédé de fabrication d'un dispositif de chauffage électrique
CN109028554A (zh) 2018-08-01 2018-12-18 深圳市赛尔盈电子有限公司 一种ptc加热器
FR3078018A1 (fr) * 2018-02-19 2019-08-23 Valeo Systemes Thermiques Cadre d'un dispositif de chauffage electrique comprenant un moyen de deformation plastique
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EP3863373B1 (fr) 2024-06-19
CN113260097B (zh) 2024-05-03
US11619422B2 (en) 2023-04-04
US20210247105A1 (en) 2021-08-12
DE102020201571A1 (de) 2021-08-12
CN113260097A (zh) 2021-08-13

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