EP1457743B1 - Réchauffeur électrique, spécialement pour une voiture - Google Patents

Réchauffeur électrique, spécialement pour une voiture Download PDF

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Publication number
EP1457743B1
EP1457743B1 EP20030290621 EP03290621A EP1457743B1 EP 1457743 B1 EP1457743 B1 EP 1457743B1 EP 20030290621 EP20030290621 EP 20030290621 EP 03290621 A EP03290621 A EP 03290621A EP 1457743 B1 EP1457743 B1 EP 1457743B1
Authority
EP
European Patent Office
Prior art keywords
contact
elements
heating
stud
contact plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20030290621
Other languages
German (de)
English (en)
Other versions
EP1457743A1 (fr
Inventor
Michel Brun
Yannik Laumonnerie
Grégory Lucas
Pascal Miss
Mathieu Mougey
Christophe Schmittheisler
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 Behr France Rouffach SAS
Original Assignee
Behr France Rouffach SAS
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 Behr France Rouffach SAS filed Critical Behr France Rouffach SAS
Priority to EP20030290621 priority Critical patent/EP1457743B1/fr
Publication of EP1457743A1 publication Critical patent/EP1457743A1/fr
Application granted granted Critical
Publication of EP1457743B1 publication Critical patent/EP1457743B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • F24H3/0447—Forms of the electrode terminals, e.g. tongues or clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • 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

Definitions

  • the invention relates to an electric heater, in particular for a motor vehicle according to the preamble of claim 1, known by the DE-A 197 32 010 ,
  • Electric heaters as they pass through DE-A 197 32 010 have become known, especially for motor vehicles with consumption optimized engines are determined in which due to the high thermal efficiency is not enough heating power available. Therefore, the heating systems are additionally equipped with an electric heater, a so-called auxiliary heater.
  • This heater consists of a heating block with a plurality of mutually parallel electrical heating elements, between which corrugated fins are arranged to improve the heat transfer to the air.
  • the heating elements consist of two contact plates, between which PTC elements are arranged. One of the contact plates each has an electrical connection element, for. B. in the form of an angled end portion of the sheet, via which the contact plate is connected to a pole of an electrical supply.
  • the EP 0 616 486A1 discloses an electric heater with contact plates, corrugated fins and PTC elements.
  • the DE 101 38 204 A1 discloses a contact layer on a base body.
  • the EP 0 443 291 A2 discloses an electrical connector pair with tin coating.
  • the contact plate consists of only one part and is therefore easier to manufacture and assemble. As a result, the heating element and thus the entire heater is easier and cheaper. In addition, due to the highly electrically conductive coating results in a low contact resistance of the contact connection and thus a small voltage drop between the voltage source and the contact plate.
  • the heating device according to the invention is to be understood in particular a heating block with electrical heating elements with PTC elements, wherein the PTC elements made of ceramic or plastic can exist with PTC effect.
  • the heating block or the electric heater may also have other, ie, similar assemblies, which also consist of contact plates and intermediate elements and heat exchange elements, for. B. are composed in the form of corrugated ribs. Such assemblies have z. B. no heating elements, but so-called standardized functional elements according to the earlier German application with the file number 102 08 152 on.
  • a coating with high electrical conductivity can preferably be achieved by tinning the contact tongue or else by coating with copper or silver.
  • the contact tongue is designed in its shape and dimensions as a standardized tab, so that they can be part of a flat connector together with a standard receptacle, for example, according to DIN 46 247. This is on the one hand a standard design of the contact terminal, but on the other hand created a cheaper and lighter version for a connector.
  • Fig. 1 shows an electric heater 1, which is used as additional heating for installation in a heating or air conditioning system of a motor vehicle, not shown.
  • This heating device 1 has a mounting frame 2, which consists of a heating block 3, consisting of heating elements 4, corrugated fins 5 and so-called standardizing functional elements 6.
  • a heating block 3 consisting of heating elements 4, corrugated fins 5 and so-called standardizing functional elements 6.
  • the heating block 3 consists not only of the known heating elements 4, but also of additional functional elements 6, which are similarly constructed.
  • the mounting frame 2 has a mounting flange 7 and a connector housing 8 in its upper region.
  • the heating device 1 can be used in an air flow channel, not shown, a heating system and fastened there by means of the mounting flange 7 and sealed.
  • the power supply of the heating elements 4 via a connector, not shown, which is inserted into the connector housing 8.
  • Fig. 2 shows a detail X from Fig. 1
  • the heating element 4 consists of two differently polarized contact plates 9, 10, between which a PTC element 11 is located in electrically and thermally conductive connection.
  • Per heating element 4 a plurality of PTC elements 11 are distributed over the length thereof and held in a known manner between the contact plates 9, 10.
  • the outer sides of the contact plates 9, 10 are in heat-conducting and electrical connection with the corrugated fins 5, which serve to increase the heat exchange surface and thus form heat exchange elements.
  • the PTC element 11 is usually made of a ceramic material, but it is also possible to use a plastic with PTC effect for heating purposes instead of the ceramic element.
  • Fig. 3 shows a section along the line III-III through the PTC element 11, the contact plates 9, 10 and the corrugated fins 5 in Fig. 2 ,
  • the air flow direction is indicated by an arrow L; a flow in the opposite direction according to a dashed arrow L 'is also possible.
  • the heat generated by energizing the PTC element 11 is - as known from the prior art - passed through the contact plates 9, 10 in the corrugated fins 5 and delivered through this to the overflowing air, which is thereby heated and used to heat the passenger compartment ,
  • Fig. 4 shows one of the two contact sheets 9, 10, which is shown here as a complete item 12.
  • the contact plate 12 is formed as a metal strip and made of an aluminum alloy or brass, as well as the corrugated fins 5 (see. Fig. 1 to 3 ).
  • the contact plate 12 has a length I and a width b - in this area, not shown here PTC elements 11 (or functionally similar elements) are arranged.
  • the left in the drawing, the end of the contact plate 12 has a contact tongue 13, which has a width a, which is smaller than the width b of the contact plate 12.
  • Contact plate 12 and contact tongue 13 are integrally stamped from a metal sheet.
  • the contact tongue 13 has a circular opening 14 in approximately central position.
  • Fig. 4a shows a detail Y according to Fig. 4 That is, essentially the contact tongue 13 with a circular opening 14.
  • the contact tongue 13 is coated with a coating 15, which is represented by a cross-hatching.
  • This coating 15 is arranged at least on the front and back of the contact tongue 13 and is preferably made of tin.
  • a tin layer can be produced, for example, by immersing the contact tongue 13 in a tin bath.
  • Tin is a good electrical conductor and thus improves the electrical conductivity of the contact plate 12 made of an aluminum alloy or of brass.
  • the shape of the contact tongue 13 corresponds to that of a standardized flat plug which is plugged into a standardized plug-in sleeve according to DIN 46 247.
  • the tinning of the contact tongues 13 could also be effected by a coating with copper or silver, whereby an even lower contact resistance and thus an even lower voltage drop between the voltage source and the contact plate 12 could be achieved.
  • the circular Opening 14 corresponds to a so-called, not shown here Rastarmze the likewise not shown receptacle according to DIN 46 247. Through the circular opening 14 and the locking lug in the Stekkerhülse a locking connection between the contact tongue 13 and the plug-in sleeve, not shown.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Resistance Heating (AREA)

Claims (2)

  1. Dispositif de chauffage électrique (1), en particulier pour un véhicule automobile, comprenant des ensembles, tels que des éléments chauffants, associés pour former un bloc chauffant (3), où les ensembles présentent à chaque fois des tôles de contact (9, 10), des éléments intermédiaires, en particulier des éléments (11) à coefficient de température positif (CTP) et des éléments d'échangeurs de chaleur (5), en particulier des ailettes ondulées (5), et au moins une tôle de contact présente une borne de contact électrique, où un élément chauffant se compose de deux tôles polarisées de façon différente, et plusieurs éléments CTP sont disposés, entre les deux tôles de contact, en étant en liaison électriquement et thermiquement conductrice, et les côtés extérieurs des tôles de contact sont en liaison thermoconductrice et électrique avec des ailettes ondulées, et la borne de contact est configurée comme une languette (13), en formant une seule et même pièce avec la tôle de contact (12), caractérisé en ce que les tôles de contact (9, 10, 12) sont fabriquées dans un alliage d'aluminium, et en ce que la languette (13) est recouverte, sur la face avant et sur la face arrière, d'une couche (15) d'étain (Sn), où la languette (13) est configurée à la façon d'un connecteur plat et fait partie, avec un alvéole, d'une connexion enfichable plate.
  2. Dispositif de chauffage selon la revendication 1, caractérisé en ce que la languette est dotée d'une ouverture (14), de forme circulaire, située à peu près au milieu.
EP20030290621 2003-03-12 2003-03-12 Réchauffeur électrique, spécialement pour une voiture Expired - Lifetime EP1457743B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030290621 EP1457743B1 (fr) 2003-03-12 2003-03-12 Réchauffeur électrique, spécialement pour une voiture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030290621 EP1457743B1 (fr) 2003-03-12 2003-03-12 Réchauffeur électrique, spécialement pour une voiture

Publications (2)

Publication Number Publication Date
EP1457743A1 EP1457743A1 (fr) 2004-09-15
EP1457743B1 true EP1457743B1 (fr) 2013-12-25

Family

ID=32749012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030290621 Expired - Lifetime EP1457743B1 (fr) 2003-03-12 2003-03-12 Réchauffeur électrique, spécialement pour une voiture

Country Status (1)

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EP (1) EP1457743B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103388891B (zh) * 2012-05-11 2016-08-31 珠海格力电器股份有限公司 电加热装置及空调器
EP3124889B1 (fr) * 2015-07-31 2020-08-26 MAHLE International GmbH Dispositif de chauffage électrique et installation de chauffage ou climatiseur doté(e) d'un tel dispositif de chauffage électrique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471034A (en) * 1993-03-17 1995-11-28 Texas Instruments Incorporated Heater apparatus and process for heating a fluid stream with PTC heating elements electrically connected in series
US5596335A (en) * 1994-12-27 1997-01-21 Ppg Industries, Inc. Electrical connector
DE19732010A1 (de) 1997-07-25 1999-01-28 Behr Gmbh & Co Elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug
DE10138204B4 (de) * 2001-08-03 2004-04-22 Ami Doduco Gmbh Elektrischer Kontakt
DE10139953A1 (de) * 2001-08-21 2003-03-27 Stolberger Metallwerke Gmbh Werkstoff für ein Metallband
DE10208152A1 (de) 2002-02-26 2003-09-04 Behr France Sarl Vorrichtung zum Austausch von Wärme

Also Published As

Publication number Publication date
EP1457743A1 (fr) 2004-09-15

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