EP2161515B1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP2161515B1
EP2161515B1 EP08290839.3A EP08290839A EP2161515B1 EP 2161515 B1 EP2161515 B1 EP 2161515B1 EP 08290839 A EP08290839 A EP 08290839A EP 2161515 B1 EP2161515 B1 EP 2161515B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
ptc element
opening
adhesive
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.)
Ceased
Application number
EP08290839.3A
Other languages
German (de)
English (en)
Other versions
EP2161515A1 (fr
Inventor
Stéphane Weingaertner
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
Mahle 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 Mahle Behr France Rouffach SAS filed Critical Mahle Behr France Rouffach SAS
Priority to EP08290839.3A priority Critical patent/EP2161515B1/fr
Publication of EP2161515A1 publication Critical patent/EP2161515A1/fr
Application granted granted Critical
Publication of EP2161515B1 publication Critical patent/EP2161515B1/fr
Ceased 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
    • 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
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the invention relates to a heat exchanger according to the preamble of claim 1.
  • auxiliary heaters used for motor vehicles in the prior art are distinguished. In a first type of electric reheater, the electrical power is conducted directly into the coolant. These are the so-called coolant-side heaters. In the second type of electric auxiliary heater, the electric power is released into the air. These are the so-called air-side heaters.
  • a plurality of PTC elements which are accommodated or pressed into a metal sheet are generally used in an electric heater.
  • a sealing profile in which the PTC elements are held. This solution
  • to fix the PTC elements in the sheet metal frame requires an additional component - the sealing profile.
  • a heat exchanger in particular an electric heater for a motor vehicle, is provided with at least one heating element, which has a frame and at least one PTC element.
  • the at least one PTC element is provided with at least one opening.
  • the opening allows an adhesive, which is applied between the frame and the at least one PTC element, to run into and fill it. After curing of the adhesive, a kind of pin is formed in the opening, which provides additional secure and permanent fixation of the PTC element on or in the frame.
  • slipping of the at least one PTC element on or in the frame is prevented in a very simple manner and without the need to use additional elements or parts.
  • the at least one PTC element is fixed to the frame with an adhesive.
  • the Adhesive applied on the entire surface of the frame on which the at least one PTC element is arranged and / or on the entire surface of the PTC element which is to be connected to the frame.
  • the adhesive which must have a viscosity suitable for this purpose, distributed in the opening provided in the PTC element to form a kind of fixing pin after curing.
  • the adhesive is also pressed into the opening as the frame is pressed together.
  • the frame is a metal frame, in particular a sheet metal frame.
  • it can also be used a plastic frame.
  • the adhesive is selected according to the materials to be joined.
  • the adhesive is a two-component adhesive.
  • the adhesive fills out the at least one opening of the at least one PTC element.
  • the at least one opening is an opening passing through the PTC element, in particular a passage opening.
  • the at least one opening ends in the PTC element.
  • the adhesive is a good thermal conductivity adhesive.
  • the at least one opening has a shape that is round, oval, square, rectangular or triangular.
  • the at least one opening is conical or cylindrical.
  • the frame is formed in two parts.
  • the frame has a first sheet and a second sheet, which are arranged parallel to each other.
  • the adhesive after the adhesive has hardened in the at least one opening, it forms a pin which fixes the at least one PTC element to the frame in addition to the adhesive layer formed between the PTC element and the frame.
  • a multiplicity of rib elements and a multiplicity of heating elements are provided in the heat exchanger.
  • Fig.1 shows a front view of the items of a heating element 1 according to the prior art.
  • the heating element 1 consists of a first sheet 2 and a second sheet 3, which run parallel and together form a frame. Between the first sheet 2 and the second sheet 3, the PTC elements 4, here 7 pieces, arranged, which are secured by a sealing profile 5 against slipping.
  • the sealing profile 5 is made as an endless profile, which consists of silicone, which is cut to the length of the heating element 1, and are punched in the apertures 6, in which the PTC elements 4 are positioned and kept at a distance.
  • Fig. 2A shows a plan view of a PTC element 4 according to one embodiment.
  • the PTC element 4 is glued in the embodiment with the first sheet 2 and the second sheet 3, which are not shown here.
  • adhesive a two-component adhesive is used, which is applied to the entire surface of the PTC element 4 and / or on the entire surface of the sheet on which the PTC element 4 is arranged.
  • the PTC elements 4 are then placed at their respective positions on the sheet and the first sheet 2 and the second sheet 3 are then pressed together to form a frame of the heating element 1.
  • the adhesive is pressed into the opening 7.
  • the adhesive fills the opening 7 completely and forms after curing a pin which fixes the PTC element 4 in addition to the first sheet 2 and / or second sheet 3.
  • only a single opening 7 is provided, which is formed as a square opening.
  • Fig. 2B is a sectional view through the PTC element 4 of Fig. 2A , wherein it can be seen that the opening 7 is a through-hole through the PTC element 4 therethrough.
  • the PTC element 4 further has an upper surface 8 and a lower surface 9, to which adhesive is applied respectively.
  • Fig. 3A shows a plan view of a PTC element 4 according to another embodiment.
  • a single opening 7 is provided, which has a round shape.
  • the opening 7 is formed in this embodiment as a cylindrical passage opening.
  • Fig. 4A is a plan view of a PTC element 4 according to another embodiment.
  • three square openings 7 are provided, the are distributed uniformly over the upper surface 8.
  • the three openings 7 are not formed as through-holes, but terminate in the PTC element 4.
  • Fig. 5A is a plan view of a PTC element 4 according to yet another embodiment, wherein two circular openings 7, which are arranged distributed uniformly over the upper surface 8, are provided.
  • Fig. 5B showing a sectional view through the PTC element 4 of FIG Fig. 5A is, it can be seen that also here the openings 7 are not formed as through holes, but in the PTC element 4 ends.

Landscapes

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

Claims (11)

  1. Echangeur de chaleur, en particulier dispositif de chauffage auxiliaire électrique pour un véhicule automobile, comprenant au moins un élément chauffant qui présente un cadre et au moins un élément (4) à coefficient de température positif - CTP -, où l'élément CTP (4) au moins au nombre de un est doté au moins d'une ouverture (7), où l'élément CTP (4) au moins au nombre de un est fixé sur le cadre, en utilisant une colle, et la colle remplit l'ouverture (7) au moins au nombre de un de l'élément CTP (4) au moins au nombre de un, caractérisé en ce que la colle, après son durcissement dans l'ouverture (7) au moins au nombre de un, forme une cheville qui fixe en plus, sur le cadre, l'élément CTP (4) au moins au nombre de un.
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que le cadre est un cadre en métal, en particulier un cadre en tôle.
  3. Echangeur de chaleur selon la revendication 1 ou 2, caractérisé en ce que la colle est une colle à deux composants.
  4. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications 1 à 3, caractérisé en ce que l'ouverture (7) au moins au nombre de un est une ouverture traversant en totalité l'élément CTP (4).
  5. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications 1 à 4, caractérisé en ce que l'ouverture (7) au moins au nombre de un se termine dans l'élément CTP (4).
  6. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications 1 à 5, caractérisé en ce que le cadre présente une première tôle (2) et une deuxième tôle (3) qui sont disposées en étant parallèles l'une à l'autre.
  7. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications 1 à 6, caractérisé en ce que la colle est une colle bonne conductrice de la chaleur.
  8. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications 1 à 7, caractérisé en ce que l'ouverture (7) au moins au nombre de un présente une forme qui est ronde, ovale, carrée, rectangulaire ou triangulaire.
  9. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications 1 à 8, caractérisé en ce qu'il est prévu une multiplicité d'ouvertures (7) dans l'élément CTP (4) au moins au nombre de un.
  10. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications 1 à 9, caractérisé en ce que l'ouverture (7) au moins au nombre de un est configurée de façon cylindrique ou conique.
  11. Echangeur de chaleur selon les revendications 1 à 10, caractérisé en ce qu'il est prévu, dans l'échangeur de chaleur, une multiplicité d'éléments à ailettes et une multiplicité d'éléments chauffants.
EP08290839.3A 2008-09-05 2008-09-05 Échangeur de chaleur Ceased EP2161515B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08290839.3A EP2161515B1 (fr) 2008-09-05 2008-09-05 Échangeur de chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08290839.3A EP2161515B1 (fr) 2008-09-05 2008-09-05 Échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP2161515A1 EP2161515A1 (fr) 2010-03-10
EP2161515B1 true EP2161515B1 (fr) 2016-11-09

Family

ID=40337209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08290839.3A Ceased EP2161515B1 (fr) 2008-09-05 2008-09-05 Échangeur de chaleur

Country Status (1)

Country Link
EP (1) EP2161515B1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826829B1 (fr) * 2001-06-27 2004-04-02 Valeo Climatisation Echangeur de chaleur a barreaux chauffants contenant des elements resistifs
EP1912028B1 (fr) * 2006-10-11 2016-03-30 Mahle Behr France Rouffach S.A.S Moyens de chauffage électrique, notamment pour des automobiles
EP1926346B1 (fr) * 2006-11-23 2018-02-21 Mahle Behr France Rouffach S.A.S Dispositif de chauffage électrique, en particulier de véhicules
EP1926347B1 (fr) * 2006-11-23 2017-07-05 Mahle Behr France Rouffach S.A.S Dispositif de chauffage électrique, en particulier pour un véhicule automobile
EP1933598B1 (fr) * 2006-12-11 2013-11-13 Behr GmbH & Co. KG Chauffage ou chauffage supplémentaire électrique, en particulier pour un système de chauffage ou climatisation d'un véhicule

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP2161515A1 (fr) 2010-03-10

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