EP2629585B1 - Heating device, in particular for heating the passenger compartment of an automobile, and relative method of assembly of said device - Google Patents

Heating device, in particular for heating the passenger compartment of an automobile, and relative method of assembly of said device Download PDF

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Publication number
EP2629585B1
EP2629585B1 EP13425027.3A EP13425027A EP2629585B1 EP 2629585 B1 EP2629585 B1 EP 2629585B1 EP 13425027 A EP13425027 A EP 13425027A EP 2629585 B1 EP2629585 B1 EP 2629585B1
Authority
EP
European Patent Office
Prior art keywords
longitudinal
electrode
longitudinal electrode
heating device
compression means
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
EP13425027.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2629585A1 (en
Inventor
Fabrizio Promutico
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.)
Bitron SpA
Original Assignee
Bitron SpA
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Publication date
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Publication of EP2629585A1 publication Critical patent/EP2629585A1/en
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Publication of EP2629585B1 publication Critical patent/EP2629585B1/en
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Classifications

    • 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
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • 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
    • H05B2203/022—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 present invention relates to a heating device, in particular for heating the passenger compartment of an automobile, and relative method of assembly of said device.
  • the invention concerns a heating device, or heater, for the passenger compartment of an automobile, studied and realized in particular to allow a high operation efficiency and an optimized construction.
  • the heater is usually operated automatically from the car upon the occurrence of certain events, such as:
  • the heater cannot be turned on or off by the driver.
  • Heating devices described above have manufacturing problems for an industrial production, as they have complications in the arrangement of the electrode-PTC pill assembly.
  • object of the present invention providing a heating device that allows an effective assembly and a high efficiency of operation.
  • a heating device connectable to a power supply, comprising a support frame; one or more radiating elements, fixed to said support frame, each radiating element comprising a containment tube capable to operate as an electrode and connectable with said power supply, a longitudinal housing, arranged within said containment tube, a longitudinal electrode, connectable with said power supply and arranged within said longitudinal housing, so as to be isolated from said containment tube, means for generating heat inserted within said containment tube and arranged between, and in contact with, said longitudinal electrode and said containment tube, so that, by applying an electric current between said containment tube and said longitudinal electrode, said heat generating means generate heat, and compression means, adapted to ensure the electrical contact between said longitudinal electrode and said heat generating means and to ensure the electrical and thermal contact between said containment tube and said heat generating means; and one or more dissipation fins capable to dissipate the heat generated by said radiating elements, characterized in that said compression means are housed within said longitudinal housing, interposed between said longitudinal
  • said dissipation fins could be arranged parallel to each other and each one of them are provided with one or more holes, in number corresponding to the number of said radiating elements, said radiating elements being inserted in said holes, and said dissipation fins being fixed to the lateral surface of said radiating elements.
  • said compression means could comprise a longitudinal metal plate and said springs are arranged in series and formed by notch on said longitudinal metal plate.
  • said support frame could comprise an upper support, provided with an electric connector for connecting with an electric power supply, a lateral containment structure of said one or more dissipation fins, said longitudinal electrodes and said containment tubes being electrically connected with said electrical connector.
  • said longitudinal electrodes could be connected with a first polarity of said power supply, preferably a positive polarity, and said containment tubes could be connected with a second polarity of said power supply, opposite to said first polarity, preferably the negative polarity.
  • said means for generating heat comprise one or more PTC (Positive Temperature Coefficient) elements.
  • said step (C) could comprise the step of mechanically expanding said containment tube, so that said dissipation fins adhere and fixe to the containment tube.
  • said step (D) could comprise the substeps of: arranging said compression means in said longitudinal housing; arranging said longitudinal electrode of said compression means; applying on said longitudinal electrode a perpendicular pressure and a longitudinal movement along a preset first direction so as to compress said compression means and arranging the longitudinal electrode below said reliefs of said longitudinal housing, so as to compress and/or preload said compression means; arranging said heat generating means in contact with said longitudinal electrode; inserting said longitudinal housing within said housing tube; and applying on said longitudinal electrode a longitudinal movement along a second direction, opposite to said first direction, so as to release longitudinal electrode from said reliefs of said longitudinal housing, raising said longitudinal electrode, pressing said PTC elements on said containment tube.
  • a heating device 1 according to the present invention can be observed.
  • Said heating device 1 comprises a support frame 2, one or more radiating elements or bars 3 or even radiating bars, installed on said support frame 2, and a plurality of dissipation fins 4 in thermal contact with said radiating bars 3, as it will be better described below.
  • Said support frame 2 comprises a support base 21, provided with holes 21' (which are visible in the following figure 14 ) and an upper support 22.
  • Said upper support 22 also includes an electrical connector 23, connectable to a plug of the automobile, in which said heating device 1 is installed.
  • Said radiating bars 3 which are four in this embodiment, see figure 4 , that is not part of the invention, are adapted to generate the heat, which is radiated from the dissipation fins 4.
  • Said radiating bars 3 have each one end 3', possibly removably fixable to said support base 21, and one end 3", possibly removably fixable to said upper support 22.
  • Said radiating bars 3 also comprise a containment tube 31, hollow inside and made of a material capable of conducting heat and electric current, so that said containment tube 31 can also act as electrical terminal, and a longitudinal housing 32, arranged within said containment tube 31 and provided with two lateral guides 32' and 32", whose function will be better explained below.
  • Said radiating bars 3 comprise inside a longitudinal electrode 33, having a terminal 33', which protrudes from said containment tube 31, at the end 3" of said radiating bars 3.
  • Said longitudinal electrode 33 is arranged so as not to get into contact with said containment tube 31, and it is connected with said connector 23.
  • said bars 3 comprise a plurality of PTC (Positive Temperature Coefficient) radiating elements 34, which are pills made of ceramic, arranged in series with respect to one another, and a plurality of compression means or springs 35.
  • PTC Positive Temperature Coefficient
  • two springs 35 for each PTC element 34 are provided for illustrative and not limitative purpose.
  • Said springs 35 are made of electrically conductive material and are placed in appropriate seats of said longitudinal housing 32 (not shown in the present invention) and arranged below said longitudinal electrode 33.
  • Each spring 35 is provided with a pair of lateral tabs respectively 35' and 35", whose function will be better described below.
  • Said PTC elements 34 are also arranged in a respective seat obtained on said longitudinal housing 32.
  • Each of said radiating bars 3 also includes a pair of rods 36' and 36", respectively insertable in said two lateral guides 32' and 32", adapted to interact with said lateral tabs 35' and 35".
  • Said dissipation fins 4 are made of metal, i.e. of conductive material, and are arranged parallel to each other. Each of said dissipation fins 4 has one or more holes 41, corresponding to the number of bars 3 of said radiating heating device 1.
  • the radiating tubes 31, which, as mentioned, also operate as electrical terminals, are connected with the negative polarity power supply of the automobile, while terminals 33' of each longitudinal electrode 33 of the radiating bars 3, which, as said, is isolated from the containment tube 31 due to the longitudinal housing 32, in which it is placed, are connected with the power supply positive polarity.
  • the electric current passes through said longitudinal electrodes 33 of said radiating bars 3, through the springs 35, which, as mentioned above, are made of electrically conductive material and preferably shape memory, such as steel, copper or the like, and through said PTC elements 34.
  • Each one of said PTC elements 34 operate as electrical resistance to the passage of the electrical current, so as to generate heat which is transmitted to said radiating tubes 31, and from the latter to said dissipation fins 4, which dissipate it.
  • the electrical circuit is closed with said PTC elements 34 in contact with the radiating tubes 31, which as mentioned, are connected with the power supply negative polarity of said automobile.
  • Heat produced by said PTC elements 34 is dissipated, as mentioned above, by dissipation fins 4 and is conveyed inside the passenger compartment of the automobile, possibly by means of one fan, so that the airflow passes through said dissipation fins 4, heating up.
  • a first assembly step (see figures 3 and 6 ) consists of inserting the radiating tubes 31 in the base support 21, through said holes 21'.
  • radiating fins 4 are sheared so as to be stacked and guided by radiating tubes 31.
  • Each single fin 4 is inserted so that the radiating tubes 31 pass through the holes 41.
  • the containment tube 31 is mechanically expanded (see arrows in figure 7 ), by means of an ogive or similar means, so as to adhere the dissipation fins 4 to containment tube 31. In this way, interference between the containment tube 31 and the dissipation fins 4 is obtained, which ensures the mechanical connection.
  • a predetermined pressure (see arrow A of figure 9a ) is, then, applied on PTC elements 34 and longitudinal housing 32, springs 35, longitudinal terminal 32, and PTC elements 34 assembly is compressed, thus compressing springs 35, up to completely release the two lateral guides 32' and 32", obtained on the longitudinal housing 32, as shown in figures 9b and 10b .
  • two rods 36' and 36" are inserted respectively into the lateral guides 32' and 32".
  • Said rods 36' and 36" interact, respectively, with the lateral tabs 35' and 35" of each spring 35, so as to prevent said springs 35 to return to their free position, i.e. not compressed, until the longitudinal housings 32, in which the springs 35, longitudinal terminal 32 and PTC elements 34 assembly is contained, is not inserted inside the containment tube 31, as shown in figure 14 .
  • Figures 17-25 show the structure, the operation and the assembly steps of an embodiment of the heating device 1 a according to the present invention.
  • heating device 1a comprises a support frame 2, provided with the upper support 22 and a lateral containment structure 24, a plurality of dissipation fins 4, and one or more radiating elements 3, in thermal contact with said dissipation fins 4.
  • Said radiating bars 3 comprise a containment tube 31 hollow inside and made of a material capable of conducting heat and electric current, so that said housing tube 31 can also act as electrical terminal, a longitudinal housing 32, open at the top and provided with lateral reliefs 32a, possibly arranged opposite, which function will be better defined in the following.
  • Said radiating bars 3 comprise inside a longitudinal electrode 33a, having a terminal 33a', which emerges from said longitudinal housing 32.
  • Said longitudinal electrode 33a comprises laterally a plurality of grooves 33a", corresponding to said reliefs 32a, which function will be better defined in the following.
  • compression means 35a are interposed, housed within said longitudinal housing 32 and provided with a plurality of springs.
  • said springs are arranged in series and obtained by carving on a longitudinal metal plate.
  • a plurality of PTC elements 34 is arranged above said longitudinal electrode 33a.
  • the assembly of the radiant element 3a, before its insertion through the dissipation fins 4, is as follows.
  • said compression means 35a are located in said housing 32.
  • said longitudinal electrode 33a is placed in said housing 32, overlapped to said compression means 35a, by passing the lateral reliefs 32a through said grooves 33a".
  • Said PTC elements 34 are then placed above said longitudinal electrode 33a.

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  • Resistance Heating (AREA)
EP13425027.3A 2012-02-20 2013-02-15 Heating device, in particular for heating the passenger compartment of an automobile, and relative method of assembly of said device Active EP2629585B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000056A ITRM20120056A1 (it) 2012-02-20 2012-02-20 DISPOSITIVO DI RISCALDAMENTO, IN PARTICOLARE PER IL RISCALDAMENTO DELLÂeuro¿ABITACOLO DI UNÂeuro¿AUTOMOBILE, ELEMENTO RADIANTE E RELATIVO METODO DI MONTAGGIO DI DETTO DISPOSITIVO.

Publications (2)

Publication Number Publication Date
EP2629585A1 EP2629585A1 (en) 2013-08-21
EP2629585B1 true EP2629585B1 (en) 2017-07-12

Family

ID=46001357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13425027.3A Active EP2629585B1 (en) 2012-02-20 2013-02-15 Heating device, in particular for heating the passenger compartment of an automobile, and relative method of assembly of said device

Country Status (2)

Country Link
EP (1) EP2629585B1 (it)
IT (1) ITRM20120056A1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104582020B (zh) * 2013-10-22 2017-05-31 比亚迪股份有限公司 Ptc加热组件及汽车除霜器
JP6568738B2 (ja) * 2015-07-22 2019-08-28 株式会社日本クライメイトシステムズ 電気式ヒータ
FR3098370A1 (fr) * 2019-07-02 2021-01-08 Valeo Systemes Thermiques Structure chauffante pour véhicule automobile

Family Cites Families (6)

* 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
DE10143852B4 (de) * 2001-09-06 2008-04-17 Webasto Ag Heizkörper
GB0325574D0 (en) 2003-11-03 2003-12-03 Delphi Tech Inc Electrical heater
DE102007032896A1 (de) 2006-08-22 2008-03-13 Modine Korea Llc., Asan Stabanordnung mit PTC-Vorrichtungen und diese enthaltender Vorwärmer
EP2151639B1 (de) * 2008-08-07 2019-01-09 MAHLE Behr GmbH & Co. KG Wärmeübertrager
KR101114583B1 (ko) * 2008-12-05 2012-03-05 현대자동차주식회사 피티씨 로드 조립체

Non-Patent Citations (1)

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

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Publication number Publication date
ITRM20120056A1 (it) 2013-08-21
EP2629585A1 (en) 2013-08-21

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