EP1847786B1 - Appareil de chauffage - Google Patents

Appareil de chauffage Download PDF

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Publication number
EP1847786B1
EP1847786B1 EP07106364A EP07106364A EP1847786B1 EP 1847786 B1 EP1847786 B1 EP 1847786B1 EP 07106364 A EP07106364 A EP 07106364A EP 07106364 A EP07106364 A EP 07106364A EP 1847786 B1 EP1847786 B1 EP 1847786B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
heating
frame
exchanger body
heating element
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
EP07106364A
Other languages
German (de)
English (en)
Other versions
EP1847786A1 (fr
Inventor
Hartmut Eisenhauer
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.)
Stego Holding GmbH
Original Assignee
Stego Holding 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 Stego Holding GmbH filed Critical Stego Holding GmbH
Priority to PL07106364T priority Critical patent/PL1847786T3/pl
Publication of EP1847786A1 publication Critical patent/EP1847786A1/fr
Application granted granted Critical
Publication of EP1847786B1 publication Critical patent/EP1847786B1/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
    • F24H3/002—Air 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
    • 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 heating device according to the preamble of claim 1.
  • Known heaters have a heat exchanger body and arranged in a receiving cavity of the heat exchanger body resistance heating elements, wherein surfaces of the receiving cavity are pressed against surfaces of the resistance heating elements in order to ensure a good heat transfer.
  • These heaters are widely used, e.g. In control cabinets, to keep the electronics contained therein at low outside temperatures to operating temperature. They are manufactured with different heat outputs in high quantities. The price accepted in the market is relatively low. Different heat outputs but mean an adapted number of resistive elements, so that for each required heat output and a customized heat exchanger body must be provided.
  • a heater of the type mentioned is, for example EP 1 574 803 A known.
  • WO 03/005770 A discloses an electric surface heater which has a low surface temperature.
  • Document DE 20 2005 020765 U1 discloses a heating device according to the preamble of claim 1 and is considered to be the closest prior art.
  • the invention is based on the object to produce heaters of the type mentioned for different thermal outputs with simplified production and low cost.
  • a heating device comprising at least one heating element, in particular at least one PTC element, with power supply means and insulating means, a heat exchanger body having a first surface for delivering heat to an environment and a receiving cavity for receiving the heating element, wherein the heating element is arranged in heat-conducting connection to the heat exchanger body in the receiving cavity, achieved in that the heating element is arranged in a frame as a separately manageable component and the frame together with the heating element in the receiving cavity for mounting the heater can be inserted.
  • An essential point of the invention thus lies in the fact that a single heat exchanger body can be used for required different heat outputs, since a corresponding number of heating elements can be introduced into a predetermined frame before assembly depending on the power requirement, whereby effort and storage can be reduced.
  • a symmetrical arrangement ensures a uniform pressure.
  • an essential point of the invention is that during assembly, the heating element or a group of heating elements is much easier to mount in the heat exchanger body, since the frame facilitates handling.
  • the frame has separating means, in particular spacers or windows, which are designed such that a plurality of heating elements can be fixed in the frame separately from one another, preferably equidistantly.
  • separating means in particular spacers or windows, which are designed such that a plurality of heating elements can be fixed in the frame separately from one another, preferably equidistantly.
  • the power supply means comprise plate-shaped electrodes, which are fixable to the frame, including the heating element or the heating elements. These ensure good heat transfer and also good electrical contact and are easy to handle during production. Furthermore, the frame again proves to be of great advantage, because again only a single part, namely the frame together with the electrodes fixed thereto must be inserted into the heat exchanger body.
  • the frame preferably has angle pieces and latching hooks for fixing the electrodes.
  • the frame comprises first guide means and the heat exchanger body second guide means formed cooperatively so that the frame is insertable with the heating element or the heating elements in a defined position in the receiving cavity.
  • first guide means and the heat exchanger body second guide means formed cooperatively so that the frame is insertable with the heating element or the heating elements in a defined position in the receiving cavity.
  • the frame has third guide means, which are designed such that the insulating means covering the power supply means, in particular an insulating foil, e.g. made of polyimide, can be fixed to the frame in a specific position.
  • the insulating means covering the power supply means in particular an insulating foil, e.g. made of polyimide, can be fixed to the frame in a specific position.
  • the third guide means allow an exact alignment of the insulating means prior to introduction into the receiving cavity. Covering the power supply means with an insulating film is particularly advantageous because this process can be done easily and quickly, especially if the insulating film is in one piece and is wrapped around the power supply devices.
  • the heat exchanger body is formed so plastically deformable that the receiving cavity for fixed connection of the heat exchanger body with the heating element or the heating elements is eingbar.
  • a plastic deformation is to be made by pressing and bending, wherein the connection is permanently maintained when the elements provided for the deformation overstretched or be biased so that a sufficient spring action is maintained even when a warming of the heat exchanger body.
  • the heater according to the invention comprises a heat exchanger body having a predetermined wall thickness, which has a second surface for transferring heat from the heating element or heating elements to the heat exchanger body, in which the second surface opposite to a pressing element for pressing the heating elements is provided on the second surface and at the pressure element is in particular integrally connected to the heat exchanger body on one and the other outer side of the heat exchanger body via a respective plastically deformable connecting portion, the wall thickness between the second surface and the pressure element to one and the other outside of the heat exchanger body decreases, thereby preventing that the surfaces on which the heating elements or the rest, are bent, which improves the heat transfer permanently.
  • the heating device has a heat exchanger body 200 with a heating unit, which in particular has PTC elements, in a receiving cavity 20 of the heat exchanger body 200, 26.
  • the receiving cavity 20 is closed at both ends with a respective plastic molded part 11, wherein the leads 12, 13 for current supply devices are led out through the one at one end.
  • the heating unit 100 after Fig. 2 comprises a plurality of heating elements 1, but at least one PTC element, which are arranged in a frame 2, in particular made of plastic, and between plate-shaped electrodes 3, in particular made of aluminum. Via terminal lugs 4.5 of the plate-shaped electrodes 3, the heating elements 1 are supplied with power.
  • the frame 2 has, like the Fig. 3 can be removed in detail, a rectangular or square base surface and has on two opposite sides in each case a first guide device 6, which is formed on the frame in the form of strips. As part of 2 are provided over the length of the frame 2 extending separating means 7, esp. Spacers or windows, with which a heating element or a plurality of heating elements 1 are separated from each other, preferably equidistantly, in the frame 2 can be fixed. In the areas between the molded strips 6 and the separating means 7 are on the one hand on each side and the edge of the frame 2 angle pieces 8 in the form of rectangular elevations and on the other on each side between the rectangular elevations two spaced detent hooks 9 are provided. With the latching hooks 9, the plate-shaped electrodes 3 are held, the angle pieces 8 fix them in a predetermined position.
  • the Fig. 2 shows the assembled heating unit 100 with the inserted into the latching hooks 9 and fixed by the angle pieces 8 in position electrodes 3 with the terminal lugs 4,5 and the heating elements used between the electrodes 3 1.
  • the electrodes 3 with insulating means 10 Before inserting the heating unit 1 in the receiving cavity 20 the electrodes 3 with insulating means 10 (see Fig. 6 ).
  • the inner sides of the strips 6 form the third guide means 14 for positioning and fixing the insulation means 10 in or on the frame 2. For assembly, therefore, a pre-assembly can take place here.
  • the heat exchanger body 200 has ribs 21 that form a first surface 22 that serves to exchange heat between the heat exchanger body 200 and the ambient air or other fluid medium.
  • a second surface 25 is arranged, which faces a pressure surface 27.
  • This pressure surface 27 is formed by a pressure element 26, which is identical to the heat exchanger body 200 is formed in the present embodiment, so that these two parts -at least mentally, can also be reversed; the heating unit thus sits between two identical heat exchanger bodies 200, 26, so that optimum heat dissipation is ensured.
  • the heating unit 100 which is surrounded on both sides by the insulating device 10, is located between the second surface 25 and the contact surface 27 after insertion into the receiving cavity 20.
  • the second surface 25 and the pressure surface 27 are identically shaped and designed such that they fully fit on surfaces of the heating unit 100, so that the strips or first guide means 6 of the frame 2 project beyond the second surface 25 and the pressure surface 27.
  • recesses 28 are provided, in which the strips or first guide means 6 of the frame 2 of the heating unit 100 find place.
  • the recesses 28 are provided in the receiving cavity 20 projecting further ribs 29 as a second guide means 29 which cooperate with the first guide means 6 of the frame 2 such that the heating unit 100 can be inserted into a defined position in the receiving cavity 20.
  • the further ribs 29 each have an area of their frame which results between the latching hooks 9 and the angle pieces 8 and the strips 6.
  • the wall thickness in the region between the second surface 25 and the further rib 29 is smaller than the wall thickness in the region of the second surface 25 and the wall thickness in the region between the further rib 29 and the outside of the heat exchanger body 200 again smaller as the wall thickness in the region between the second surface 25 and the further rib 29, so that the wall thickness of the heat exchanger body 200 decreases from the second surface 25.
  • the heat exchanger body 200 and the identically shaped pressure element 26 are connected to one another via connecting sections 30, 30 '.
  • the heat exchanger body 200, the connecting portions 30,30 'and the pressure element 26 are integrally formed in the embodiment. This is easiest to ensure by production of the heat exchanger body 200,26 extruded part, in particular made of aluminum. The production can be done in "meterware", so that only the heating units to be mounted correspondingly long pieces must be sawn off, which further facilitates the assembly and further reduces the price.
  • the connecting portions 30, 30 ' have a V-shaped cross section, so that buckling bending at forces perpendicular to the surface of the heating unit 100 is easy to accomplish.
  • the connecting sections 30, 30 'each comprise a buckling element 31, which is connected to the heat exchanger body 200 or the pressure element 26 via thinned material points which act like hinges 32, 33.
  • buckling elements only a relatively small force must be used to ensure plastic deformation in order to ensure plastic deformation.
  • it can be ensured in this way that the material deforms in exactly the place that is desired by the designer.
  • connecting portion 30 acting as the bending element 34 and the hinges 32, 33 are relatively stiff connecting portions 35, 36.
  • the heat exchanger body 200 which is described for a better understanding of the invention and relates to the prior art, and Fig. 5 differs in its configuration of that according to the first embodiment in that no further ribs 29 are provided in the recesses 28. Otherwise, the reference numerals in the Fig. 5 to the same and the same parts as in the first embodiment. A decreasing wall thickness in the region between the second surface 25 and the outside of the heat exchanger body 200 may also be advantageous in this embodiment.
  • the latching hooks 9 and the angle pieces 8 are arranged on the edge of the frame 2, in which the electrodes and the insulating means or only the electrodes are fixed and fixed.
  • the reference numerals in the Fig. 6 to the same and the same parts as in the first embodiment.
  • the bending elements 31 bend, as schematized in the 8 and 9 is shown.
  • the heat exchanger body 200 and the pressure element 26 in particular in a configuration with decreasing wall thickness no bending moment is exerted, so that their deformation is prevented by additional, non-reinforcing the contact forces.
  • the surfaces on which the heating unit 100 rests are thus not bent, which permanently improves the heat transfer.
  • pressing tools 40-43 which are moved perpendicular to the surface of the heating unit 100
  • pressing tools 44, 45 which engage directly in the connecting portions 30, 30 'and the buckling elements 31 and are moved towards each other parallel to the surfaces of the heating unit 100.
  • the bending angle ⁇ (see Fig. 4 , respectively. Fig. 5 ) of the buckling elements 31 also is reduced, so that the second surface 25 and the pressing surface 27 are pressed onto the surfaces of the heating unit 10.
  • the heating device thus produced with a heat exchanger body 200,26 and a heating unit 100 respectively according to the first embodiment in the receiving cavity 20, the heating unit 100, the electrodes 3 are covered with an insulating device 10, in particular with an insulating film, and the receiving cavity 20 at on both ends closing plastic moldings 11.
  • an insulating device 10 in particular with an insulating film
  • the receiving cavity 20 at on both ends closing plastic moldings 11.
  • a plastic molded part connected to the terminal lugs 4.5 lines 12,13 are led to the outside.
  • the plastic molded parts 11, which close the receiving cavity 20, can thus simultaneously serve to keep the heating unit 100 in the adjusted position before the deformation process or during the deformation.
  • Each of the described heating units 100 may be introduced into one or the other of the described heat exchanger bodies 200, 26.

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)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (7)

  1. Appareil de chauffage, comprenant
    au moins un élément chauffant (1), en particulier au moins un élément chauffant PTC, avec des dispositifs d'alimentation en courant (3) et des dispositifs d'isolation (10), un corps d'échange thermique (200) avec une première surface (22) dégageant la chaleur vers un environnement et avec une cavité de réception (20) recevant l'élément chauffant (1),
    ledit élément chauffant (1) étant logé dans la cavité de réception (20) en liaison thermoconductrice avec le corps d'échange thermique (200),
    ledit élément chauffant (1) étant agencé dans un cadre (2) formant un élément manipulable séparément et le cadre (2) pouvant être inséré, y compris avec l'élément chauffant (1), dans la cavité de réception (20) pour le montage de l'appareil de chauffage, et le corps d'échange thermique (200) comportant une deuxième surface (25) transmettant la chaleur depuis l'élément chauffant ou les éléments chauffants (1) vers le corps d'échange thermique (200),
    la deuxième surface (25) est prévue en face d'un élément de pression (26) destiné à presser les éléments chauffants (1) contre la deuxième surface (25), et ledit élément de pression (26) étant relié, en particulier d'un seul tenant, au corps d'échange thermique (200) sur l'un et l'autre côté extérieur respectivement par l'intermédiaire d'une partie d'assemblage (30, 30') plastiquement déformable,
    caractérisé en ce que
    l'épaisseur de paroi entre la deuxième surface (25) et l'élément de pression (26) diminue en allant vers l'un et l'autre côté extérieur du corps d'échange thermique (200).
  2. Appareil de chauffage selon la revendication 1, caractérisé en ce que le cadre (2) comporte des dispositifs de séparation (7), en particulier des écarteurs ou des fenêtres, qui sont réalisés de telle sorte que plusieurs éléments chauffants (1) peuvent être fixés dans le cadre (2) séparément les uns des autres, de préférence à équidistance.
  3. Appareil de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que les dispositifs d'alimentation en courant (3) comprennent des électrodes en forme de plaques, pouvant être fixées sur le cadre (2) conjointement avec l'élément chauffant ou les éléments chauffants (1) inséré(s).
  4. Appareil de chauffage selon l'une quelconque des revendications précédentes, en particulier selon la revendication 3, caractérisé en ce que le cadre (2) comporte des cornières (8) et des crochets (9) pour la fixation des électrodes (3).
  5. Appareil de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que le cadre (2) comporte des premiers dispositifs de guidage (6) et le corps d'échange thermique (200) comporte des deuxièmes dispositifs de guidage (29), lesquels sont réalisés de manière à coopérer entre eux de telle sorte que le cadre (2) peut être inséré conjointement avec l'élément chauffant ou les éléments chauffants (1) dans une position définie à l'intérieur de la cavité de réception (20).
  6. Appareil de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que le cadre (2) comporte des troisièmes dispositifs de guidage (14) configurés de telle sorte que les dispositifs d'isolation (10), en particulier un film isolant, en polyimide par exemple, recouvrant les dispositifs d'alimentation en courant (3), peuvent être fixés sur le cadre (2) dans une position prédéterminée.
  7. Appareil de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps d'échange thermique (200) est plastiquement déformable de telle sorte que la cavité de réception (20) peut se réduire en vue d'un assemblage fixe du corps d'échange thermique (200) avec l'élément chauffant ou les éléments chauffants (1).
EP07106364A 2006-04-19 2007-04-18 Appareil de chauffage Active EP1847786B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07106364T PL1847786T3 (pl) 2006-04-19 2007-04-18 Urządzenie grzewcze

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006018150A DE102006018150B4 (de) 2006-04-19 2006-04-19 Heizeinrichtung

Publications (2)

Publication Number Publication Date
EP1847786A1 EP1847786A1 (fr) 2007-10-24
EP1847786B1 true EP1847786B1 (fr) 2012-01-11

Family

ID=38325239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07106364A Active EP1847786B1 (fr) 2006-04-19 2007-04-18 Appareil de chauffage

Country Status (6)

Country Link
EP (1) EP1847786B1 (fr)
AT (1) ATE541162T1 (fr)
DE (1) DE102006018150B4 (fr)
DK (1) DK1847786T3 (fr)
ES (1) ES2376900T3 (fr)
PL (1) PL1847786T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3378279B1 (fr) * 2015-11-20 2022-04-13 DBK David + Baader GmbH Riadateur pour chauffage electrique et chauffage electrique

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DE102008056083B4 (de) * 2008-07-21 2021-08-12 Borgwarner Ludwigsburg Gmbh Verfahren zum Herstellen einer Heizvorrichtung und Heizvorrichtung
DE112011105179A5 (de) * 2011-04-23 2014-01-16 Al Bernstein Energiesparheizkörper mit elektrischer Engergieträgerzellen sowie Verfahren zu dessen Herstellung
DE102011077922A1 (de) * 2011-06-21 2012-12-27 Behr Gmbh & Co. Kg Wärmeübertrager
DE102011054752B4 (de) * 2011-10-24 2014-09-04 Stego-Holding Gmbh Kühl- und Haltekörper für Heizelemente, Heizgerät und Verfahren zur Herstellung eines Kühl- und Haltekörpers
DE102011054750B4 (de) 2011-10-24 2014-08-21 Stego-Holding Gmbh Kühl- und Haltekörper für Heizelemente, Heizgerät und Verfahren zur Herstellung eines Kühl- und Haltekörpers
DE102015208156A1 (de) * 2015-05-04 2016-11-10 Robert Bosch Gmbh Heizvorrichtung
FR3073035B1 (fr) 2017-10-30 2020-07-24 Valeo Systemes Thermiques Tube pour dispositif de chauffage pour vehicule automobile dont une paroi laterale forme un relief
DE102021111665B4 (de) * 2021-05-05 2022-12-01 Stego-Holding Gmbh Haltevorrichtung, Heizgerät und Verfahren
USD1006966S1 (en) 2021-05-05 2023-12-05 Stego-Holding Gmbh Convector heater
DE102021112603A1 (de) 2021-05-14 2022-11-17 Stego-Holding Gmbh Heizeinrichtung und Verfahren zur Herstellung einer Heizeinrichtung

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DE3042420A1 (de) * 1980-11-11 1982-06-24 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrischer heizkoerper mit ein oder mehreren flachen, quaderfoermigen heizelementen
JP2532502Y2 (ja) * 1991-02-20 1997-04-16 株式会社村田製作所 発熱ユニット
AU2002321979A1 (en) * 2001-07-02 2003-01-21 Erdinc Soy Electrical convective panel heater
DE20121115U1 (de) * 2001-12-21 2003-04-24 Eichenauer Gmbh & Co Kg F Elektrische Heizeinrichtung zum Beheizen einer korrosiven Flüssigkeit in einem Kfz
DE10360159A1 (de) * 2003-12-20 2005-07-21 Eichenauer Heizelemente Gmbh & Co. Kg Profilrohr und Verfahren zum Verspannen von Funktionselementen in einem solchen
ES2338575T3 (es) * 2004-02-27 2010-05-10 Biurtu, S.A. Radiador electrico modular.
DE202005020765U1 (de) * 2005-08-10 2006-07-06 Stego-Holding Gmbh Vorrichtung zum Übertragen von Wärme von einem Heizelement auf Umgebungsluft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3378279B1 (fr) * 2015-11-20 2022-04-13 DBK David + Baader GmbH Riadateur pour chauffage electrique et chauffage electrique

Also Published As

Publication number Publication date
DE102006018150A1 (de) 2007-11-08
ATE541162T1 (de) 2012-01-15
ES2376900T3 (es) 2012-03-20
DE102006018150B4 (de) 2008-01-24
EP1847786A1 (fr) 2007-10-24
PL1847786T3 (pl) 2012-06-29
DK1847786T3 (da) 2012-04-23

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