EP3096095B1 - Dispositif de chauffage électrique - Google Patents

Dispositif de chauffage électrique Download PDF

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Publication number
EP3096095B1
EP3096095B1 EP15168131.9A EP15168131A EP3096095B1 EP 3096095 B1 EP3096095 B1 EP 3096095B1 EP 15168131 A EP15168131 A EP 15168131A EP 3096095 B1 EP3096095 B1 EP 3096095B1
Authority
EP
European Patent Office
Prior art keywords
heating device
circuit board
electric heating
housing
channel
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
EP15168131.9A
Other languages
German (de)
English (en)
Other versions
EP3096095A1 (fr
Inventor
Jean-Philippe Gries
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Priority to EP15168131.9A priority Critical patent/EP3096095B1/fr
Publication of EP3096095A1 publication Critical patent/EP3096095A1/fr
Application granted granted Critical
Publication of EP3096095B1 publication Critical patent/EP3096095B1/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
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters
    • F24H9/0057—Guiding means
    • F24H9/0063—Guiding means in air channels
    • 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
    • H05B3/40—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 invention relates to a heating device according to the preamble of claim 1. Moreover, the invention relates to a heating or air conditioning with such a heater.
  • the waste heat of the motor vehicle engine is usually used for the heating of the vehicle interior of a motor vehicle. This waste heat arises after the vehicle engine is turned on. In a sufficient amount for the desired heat output, however, the waste heat can usually be provided only after a certain warm-up time. In addition, in modern, low-consumption motor vehicle engines, a comparatively small amount of waste heat is created. In motor vehicles with an electric motor as a drive motor, this heat source completely falls away or is considerably reduced, because the electric motor hardly generates waste heat in comparison to an internal combustion engine. It is therefore customary, especially in cold weather conditions, to use electric heaters or additional electric heaters.
  • the EP 1 253 808 A2 discloses an automotive electric heater having a plurality of heaters stacked in a block.
  • the individual heating elements are held together by a rectangular frame.
  • a control unit for electronic control of the heating power is integrated, so that the heating elements and the control unit form a common structural unit.
  • window-like openings are embedded, so that an air flow in the air flow direction of an air flow in an air channel can flow through these openings in order to cool the control unit.
  • An embodiment of the invention relates to an electrical heating device, in particular for a motor vehicle, with at least one heating element, and with a housing, with a first housing side, wherein the at least one heating element is arranged in a first plane and the first housing side in a first plane in the Essentially vertically intersecting second Level and adjacent to the at least one heating element is arranged, further comprising at least one substantially parallel to the first plane arranged printed circuit board having a first printed circuit board side and a second printed circuit board side opposite the first printed circuit board side, wherein the second printed circuit board side has a partial section.
  • the first housing side has at least one window-like opening, wherein the housing has a housing bottom arranged substantially parallel to the first plane, at least one opening is formed on the housing underside and the partial section is arranged in the region of the at least one opening, so that the partial section substantially is free.
  • a further embodiment of the electric heating device provides that the at least one window-like opening and / or the at least one opening is or are formed as a recess open on one side.
  • the electric heater can be arranged in a heating and / or air conditioning such that the sucked by a fan of the heating and / or air conditioning air flow flows through the window-like openings up to the exposed portion.
  • the circuit board is cooled in an advantageous manner by the air flow without a significant additional material, energy or manufacturing costs incurred for the cooling.
  • a further embodiment of the electric heating device provides that a substantially channel-like depression is formed in the region of the housing underside. Through the channel-like depression, part of the air flow sucked in by the fan of the heating and / or air conditioning system can be diverted and is available for cooling the printed circuit board.
  • An additional embodiment of the electrical heating device has a channel-like depression which runs essentially parallel to the first housing side.
  • the channel-like depression and the at least one window-like opening are fluidly connected to one another.
  • An additional embodiment of the electric heater provides that the channel-like recess is formed as a substantially unilaterally open continuous channel.
  • the at least one opening is arranged substantially in the region of the channel-like depression.
  • a further embodiment of the electric heating device provides that at least one electronic control element is arranged in the region of the first printed circuit board side.
  • At least one connection for a power supply and / or at least one connection for a drive logic is arranged.
  • the power of the electric heating device can be controlled, for example, via the on-board computer of a motor vehicle.
  • a further embodiment of the electric heater provides that the at least one heating element with the housing and / or the circuit board is formed releasably or permanently connected. This allows easy mounting of the electric heater.
  • the at least one heating element has at least one positive-temperature-coefficient element.
  • a further exemplary embodiment of the electric heating device provides that the at least one heating element has at least one heat-dissipating surface, with a number of heat-conducting fins which increase the at least one heat-dissipating surface.
  • An advantageous embodiment of the heating and / or air conditioning with an air duct provides that in the air duct one according to the above said description designed electric heater can be arranged.
  • the at least one electrical heating element and the at least one printed circuit board and / or the housing protrude into the air duct.
  • An additional embodiment of the heating and / or air conditioning system provides that the partial section is arranged in the air channel or the channel-like depression is designed to be fluid-connected to the air channel.
  • a heating and / or air conditioning is created, which also produces a very good heating performance in motor vehicles with modern, consumption-optimized and only slightly waste heat producing engines as well as in motor vehicles with electric motors.
  • sensitive components to be cooled are arranged in a heating and / or air conditioning electrical heating device in energy, material and space-saving manner cooled.
  • FIGS. 1 to 4 each show a schematic view of an embodiment of an electric heater. 1
  • the electric heater 1 may be arranged in a not shown heating and / or air conditioning of a motor vehicle.
  • the electric heating device 1 has a housing 3 and at least one control device with a printed circuit board 10.
  • the at least one printed circuit board 10 may have a rigid structure or a flexible structure.
  • the at least one printed circuit board 10 may be a single-layer printed circuit board 10, a two-layer printed circuit board 10 or a multilayer printed circuit board 10.
  • the printed circuit board 10 has a first printed circuit board side 11 and a second printed circuit board side 12 lying opposite the first printed circuit board side 11.
  • connection 18 for the electrical power supply of the electric heating device 1 is arranged in the region of the first printed circuit board side 11.
  • the electric heater 1 can be connected to an unillustrated electrical system of the motor vehicle.
  • connection 19 for an electronic connection of the electric heating device 1 is arranged with a control logic, not shown.
  • the electric heating device 1 can be activated, for example, via an on-board computer arranged in the motor vehicle.
  • the exemplary embodiment of an electrical heating device 1 in the region of the first printed circuit board side 11 has three electronic control elements 15.
  • the electric heater 1 has one, two, four, five, six, or a plurality of such controls 15.
  • the at least one control element 15 may, in alternative embodiments, also be arranged outside the region of the first printed circuit board side 11 or both in the region of the first printed circuit board side 11 and outside the region of the first printed circuit board side 11.
  • the at least one control element 15 may, for example, be a power transistor, in particular a metal-oxide-semiconductor field-effect transistor.
  • the electric heating device 1 has at least one heating element 2.
  • the electric heating device 1 may have different numbers of heating elements 2.
  • the electric heating device 1 has a plurality of heating elements 2.
  • the heating elements for example, to a Heating block stacked or layered present and optionally be enclosed by a frame made of metal or plastic.
  • the structure of the heating elements 2 and / or the structure of the heating block can also vary in different embodiments.
  • the at least one heating element 2 has a positive-temperature-coefficient element 16, also referred to as a PTC element, and contact plates and heat-conducting ribs 17 arranged adjacent to the PTC element 16.
  • the at least one heating element 2 may have other forms of resistance heating elements than a PTC element.
  • the at least one heating element 2 is arranged in a first plane 5.
  • the at least one heating element 2 has a first heating element end 26 and a second heating element end 27 opposite the first heating element end 26.
  • the at least one heating element 2 is connected to the first printed circuit board 10 via a plug 23 and a contact surface 24 in the region of a first housing side 4.
  • the at least one heating element 2 is otherwise connected to the printed circuit board 10.
  • FIG. 3 By way of example, five plugs 23 arranged in the region of the first housing side 4 are shown. In various embodiments, the number of connectors 23 may also vary.
  • the first housing side 4 is arranged in a second plane 6, which vertically intersects the first plane 5, and adjacent to the at least one heating element 2.
  • the size and number of the window-like openings 7 arranged in the region of the first housing side 4 may vary.
  • the at least one heating element 2, the first housing side 4 and the at least one in the region of the first housing side 4 formed window-like opening 7 are advantageously arranged in a heating and / or air conditioning so that the at least one heating element 2, the first side of the housing 4 and at least one window-like opening 7 protrude into an air duct 20 of the heating and / or air conditioning and / or are arranged in an air flow to be heated.
  • air of the air flow can flow into the at least one window-like opening 7.
  • the housing 3 also has a housing bottom 8.
  • the housing bottom 8 is arranged offset parallel to the first plane 5 and with respect to the printed circuit board 10 against an air flow direction 22 in the air flow direction downstream.
  • the housing bottom 8 has an opening 9. In the region of the opening 9 or adjacent to the opening 9, a partial section 13 of the second printed circuit board side 12 is arranged. By means of the opening 9, the portion 13 of the second printed circuit board side 12 is exposed. The air flowing through there can thus directly cool the printed circuit board 10, because the air can flow past the second printed circuit board side 12 directly.
  • FIG. 1 For example, a partial airflow 25 is shown.
  • the partial air flow 25 flows through the at least one window-like opening 7.
  • the partial air flow 25 flows along the housing bottom 8, the opening 9 and the partial section 13.
  • FIG. 1 an air duct wall 21 is shown schematically.
  • the housing 3 protrudes into the air duct 20 with approximately one half of its extent.
  • the housing 3 projects with a part of its extension into the air duct 20 which is larger or smaller than half its circumference.
  • a channel-like recess 14 is formed in the area of the housing bottom 8.
  • the channel-like depression 14 may be designed, for example, such that the opening 9 and the partial section 13 are arranged in the region of the channel-like depression 14.
  • the channel-like recess 14 is formed in the region of the housing bottom 8 as a kind of continuous channel, wherein the partial air flow 25, the channel-like recess 14 flows through.

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)

Claims (15)

  1. Dispositif de chauffage électrique (1), en particulier pour un véhicule automobile, comprenant au moins un élément chauffant (2) et comprenant un boîtier (3) comportant un premier côté de boîtier (4), où l'élément chauffant (2) au moins au nombre de un est disposé dans un premier plan (5), et le premier côté (4) du boîtier est disposé dans un second plan (6) coupant pratiquement verticalement le premier plan (5) et disposé en étant contigu à l'élément chauffant (2) au moins au nombre de un, ledit dispositif de chauffage électrique comprenant en outre au moins une plaque à circuits imprimés (10) disposée pratiquement de façon parallèle au premier plan (5), ladite plaque comportant un premier côté de plaque à circuits imprimés (11) et un second côté de plaque à circuits imprimés (12) faisant face au premier côté (11) de la plaque à circuits imprimés, où le second côté (12) de la plaque à circuits imprimés présente une section partielle (13), caractérisé en ce que le premier côté (4) du boîtier présente au moins une ouverture (7) en forme de fenêtre, où le boîtier (3) présente une partie inférieure de boîtier (8) disposée pratiquement de façon parallèle au premier plan (5), où au moins une ouverture (9) est configurée au niveau de la partie inférieure (8) du boîtier, et la section partielle (13) est disposée dans la zone de l'ouverture (9) au moins au nombre de un, de sorte que la section partielle (13) est disposée en étant pratiquement dégagée.
  2. Dispositif de chauffage électrique (1) selon la revendication 1, caractérisé en ce que l'ouverture (7) au moins au nombre de un, en forme de fenêtre, et / ou l'ouverture (9) au moins au nombre de un est ou sont configurée (s) comme un évidement ouvert sur un côté.
  3. Dispositif de chauffage électrique (1) selon la revendication 1 ou 2, caractérisé en ce qu'une partie en creux (14), pratiquement en forme de conduit, est configurée dans la zone de la partie inférieure (8) du boîtier.
  4. Dispositif de chauffage électrique (1) selon la revendication 3, caractérisé en ce que la partie en creux (14), en forme de conduit, s'étend pratiquement de façon parallèle au premier côté (4) du boîtier.
  5. Dispositif de chauffage électrique (1) selon la revendication 3 ou 4, caractérisé en ce que la partie en creux (14), en forme de conduit, et l'ouverture (7) au moins au nombre de un, en forme de fenêtre, sont reliées en communiquant fluidiquement l'une avec l'autre.
  6. Dispositif de chauffage électrique (1) selon la revendication 3, 4 ou 5, caractérisé en ce que la partie en creux (14), en forme de conduit, est configurée pratiquement comme une rigole continue ouverte sur un côté.
  7. Dispositif de chauffage électrique (1) selon la revendication 3, 4, 5 ou 6, caractérisé en ce que l'ouverture (9) au moins au nombre de un est disposée pratiquement dans la zone de la partie en creux (14) en forme de conduit.
  8. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un élément de commande électronique (15) est disposé dans la zone du premier côté (11) de la plaque à circuits imprimés.
  9. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un raccordement pour une alimentation en courant électrique (18) est disposé dans la zone du premier côté (11) de la plaque à circuits imprimés et / ou au moins un raccordement est disposé pour une logique de commande (19).
  10. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément chauffant (2) au moins au nombre de un est configuré en pouvant être assemblé, de façon détachable ou indétachable, avec le boîtier (3) et / ou avec la plaque à circuits imprimés (10).
  11. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément chauffant (2) au moins au nombre de un présente au moins un élément (16) à coefficient de température positif.
  12. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément chauffant (2) au moins au nombre de un présente au moins une surface dissipant de la chaleur, ladite surface comprenant un nombre d'ailettes (17) conductrices de la chaleur, ailettes qui agrandissent la surface au moins au nombre de un dissipant de la chaleur.
  13. Système de chauffage et / ou de climatisation comprenant un conduit d'air (20), caractérisé en ce qu'un dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes est disposé dans le conduit d'air (20).
  14. Système de chauffage et / ou de climatisation selon la revendication 13, caractérisé en ce que l'élément chauffant (2) au moins au nombre de un et la plaque à circuits imprimés (10) au moins au nombre de un et / ou le boîtier (3) pénètrent dans le conduit d'air (20).
  15. Système de chauffage et / ou de climatisation selon la revendication 13 ou 14, caractérisé en ce que la section partielle (13) est disposée dans le conduit d'air, ou bien la partie en creux (14), en forme de conduit, est configurée en communiquant fluidiquement avec le conduit d'air.
EP15168131.9A 2015-05-19 2015-05-19 Dispositif de chauffage électrique Active EP3096095B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15168131.9A EP3096095B1 (fr) 2015-05-19 2015-05-19 Dispositif de chauffage électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15168131.9A EP3096095B1 (fr) 2015-05-19 2015-05-19 Dispositif de chauffage électrique

Publications (2)

Publication Number Publication Date
EP3096095A1 EP3096095A1 (fr) 2016-11-23
EP3096095B1 true EP3096095B1 (fr) 2018-04-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15168131.9A Active EP3096095B1 (fr) 2015-05-19 2015-05-19 Dispositif de chauffage électrique

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3064818B1 (fr) * 2017-03-31 2019-12-20 Valeo Systemes Thermiques Capot pour boiter de dispositif de chauffage pour vehicule automobile
FR3079451A1 (fr) * 2018-03-29 2019-10-04 Valeo Systemes Thermiques Dispositif de chauffage electrique et installation de chauffage et/ou ventilation et/ou climatisation correspondante

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19925757C5 (de) * 1999-06-05 2011-02-10 Behr France Rouffach S.A.S. Heizeinrichtung, insbesondere für ein Kraftfahrzeug
EP1253807A3 (fr) 2000-05-23 2003-02-05 Catem GmbH & Co.KG Dispositif de chauffage électrique, utilisé en particulier dans les véhicules
DE202005002115U1 (de) * 2005-02-09 2006-06-14 Catem Gmbh & Co. Kg Elektrische Heizvorrichtung, insbesondere für den Einsatz in Kraftfahrzeugen
FR2922817B1 (fr) * 2007-10-31 2012-12-21 Valeo Systemes Thermiques Dispositif de chauffage electrique d'un flux d'air circulant a l'interieur d'une installation de ventilation, de chauffage et/ou de climatisation d'un vehicule automobile
EP2863143B1 (fr) * 2013-10-21 2019-02-20 Mahle Behr France Rouffach S.A.S Dispositif de chauffage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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