EP3728962B1 - Dispositif de chauffage électrique avec station d'accueil des électrodes - Google Patents

Dispositif de chauffage électrique avec station d'accueil des électrodes Download PDF

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Publication number
EP3728962B1
EP3728962B1 EP18839826.7A EP18839826A EP3728962B1 EP 3728962 B1 EP3728962 B1 EP 3728962B1 EP 18839826 A EP18839826 A EP 18839826A EP 3728962 B1 EP3728962 B1 EP 3728962B1
Authority
EP
European Patent Office
Prior art keywords
docking station
heating device
electrodes
heating
electrode
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
EP18839826.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3728962A1 (fr
Inventor
Yann COUAPEL
Erwan Gogmos
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques 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.)
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Publication date
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Publication of EP3728962A1 publication Critical patent/EP3728962A1/fr
Application granted granted Critical
Publication of EP3728962B1 publication Critical patent/EP3728962B1/fr
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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
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply 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
    • 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
    • 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
    • F24H2250/00—Electrical heat generating means
    • F24H2250/10—Electrodes
    • 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 for an air conditioning unit, comprising a docking station for the heating electrodes.
  • the invention also relates to an air conditioning unit comprising such a heating device.
  • the invention relates to a method of mechanical and electrical connection of the electrodes of the heating device.
  • the invention will find its applications, in particular, in the field of motor vehicles.
  • Electric heating devices intended to be integrated into vehicle air conditioning units are known. These are either additional radiators, combined with heating radiators traversed by a heat transfer fluid, in vehicles with internal combustion engines, or main radiators, in electric or hybrid vehicles.
  • Such heating devices comprise a heating body accommodating heating units provided with heating elements supplied with electric current by electrodes. For electrical safety reasons, it may be necessary to isolate the heating elements and their supply electrodes from the outside.
  • the heating units comprise tubes inside which the heating elements and their electrodes are located, the inner surface of the tubes being provided with an electrically insulating layer in order to insulate the heating elements and their electrodes.
  • These heating devices comprise a distribution unit capable of controlling the current flowing in the heating units via in particular an electronic card.
  • switches are welded to control the current flowing in the electrodes.
  • Each switch is electrically connected on the one hand to the electronic card, and on the other hand to an electrode.
  • the document EP 3 228 950 describes a heating device for an air conditioning unit comprising a heating body supplied with current via a distribution unit, the heating body comprising electrodes and the distribution unit comprising a docking station having a plurality of housings accommodating these electrodes .
  • the object of the present invention is to overcome the various drawbacks stated above, by means of a heating device allowing an electrical and mechanical connection between the heating body and the distribution unit which is simple to implement and which ensures correct positioning of all parts at the time of connection, as well as for the entire life of the heating device and this with a limitation of the relative movements between the parts in order to avoid vibration problems and to improve the reliability of the heating device.
  • This device is mainly characterized in that the switches are fixed on the other hand on an electronic current supply card belonging to the distribution unit, the docking station comprising a lower face facing the electronic circuit board and an upper face facing the tubes.
  • the main idea of this invention consists in providing a docking station, which mediates between the parts belonging to the heating body and the parts belonging to the distribution unit, and which must be connected to each other.
  • this docking station makes it possible to position the electrodes correctly, with a view to their connection.
  • the docking station makes it possible to correctly position mechanical and electrical connection means, which will be described later.
  • the docking station thus constitutes a stable base, which serves as a reference for the positioning of the various parts.
  • the invention also relates to an air conditioning unit comprising a heating device as described above.
  • the invention relates to an electric heating device 1 .
  • a heating device 1 that is to say intended to be powered by a direct current (DC) or alternating current (AC) having an electrical voltage greater than 60 V, in particular between 60 and 1000 V, more particularly between 180 and 600 V, and/or making it possible to release a heating power on the air or an electrical power consumed greater than 2 kW, in particular between 2 kW and 10 kW.
  • DC direct current
  • AC alternating current
  • Said heating device 1 comprises a heating body 2 supplied with electric current to heat a flow of air passing through said heating body 2.
  • Said heating body 2 here has a substantially parallelepipedic configuration, extending at the surface. It is intended to be positioned transversely to the air flow to be heated. More specifically, said air flow is intended to be oriented perpendicular to said heating body 2, that is to say perpendicular to the plane of the figure 1 .
  • the heating body 2 is formed by a succession of aligned metal tubes 4. Inside each tube 4 are heating elements 8 through which said current flows.
  • the heating elements 8 are, for example, PTC effect resistors (for positive temperature coefficient). These heating elements 8 are particularly visible in figure 13 .
  • Electrodes 9 are located on either side of heating elements 8 for supplying them with electric current. More particularly, each heating element 8 is surrounded by a positive electrode 9 and a negative electrode 9.
  • layers 12 of electrically insulating and thermally conductive materials are located between each electrode 9 and an inner wall of the tube 4.
  • Each set - tube 4 / heating elements 8 / electrodes 9 - forms what is called a heating unit.
  • Said heating units are selectively supplied with current.
  • each heating unit is supplied with current independently of the others and can therefore be traversed by a different current, in particular by its intensity, from the current traversing the other heating units.
  • the value of the current in play here is in particular the value of the average current or the effective current.
  • the heating body 2 may comprise heat sinks 13, for example fins, in thermal contact relationship with the tubes 4.
  • the heat sinks 13 are positioned, in particular, between said tubes 4. For the sake of clarity, only certain heat sinks 13 extending from the end tubes 4 have been shown, so as not to overload the figure 1 .
  • Said heating body 2 comprises a frame 5, in particular made of plastic material, accommodating said heating units and serving to hold said tubes 4.
  • the tubes 4 are also held in position by means of intermediate plates 22.
  • the heating device 1 further comprises a distribution unit 3 capable of controlling the current flowing in said heating body 2.
  • Said distribution unit 3 is advantageously configured to control the current supplying the heating body 2, in particular the various heating units, in particular using controlled switches 15, making it possible to respectively control a flow of current in each of the heating units. heated.
  • These switches 15 are mounted on a T-shaped electronic card 11.
  • a docking station 6 is provided and located just above the upper face of the electronic card 11. This docking station 6 is particularly visible in picture 3 where the electronic card 11 is not shown for greater clarity.
  • This docking station 6 is thus arranged at the level of the junction between, on the one hand the heating body 2 with its heating units, and on the other hand the distribution unit 3 with its electronic card 11.
  • the docking station 6 consists of an intermediate base facilitating the electrical and mechanical connection of the heating body 2 to the distribution unit 3.
  • this station 6 accommodates on one side the electrodes 9 protruding from the tubes 4, and on the other side the switches 15 able to be soldered to the electronic card 11.
  • the docking station 6 comprises a lower face facing the electronic card 11, and an upper face facing the tubes 4.
  • the docking station 6 consists of a bar , or a strip, extending over the entire length of the heating body 2, following the alignment of the electrodes 9 at the outlet of the tube 4.
  • this space is sized so as to be able to allow other components to be soldered to the electronic card 11, under the docking station 6.
  • each housing 17 accommodating the electrodes 9 and in which there are mechanical and electrical connection means of the electrodes 9 to the distribution unit 3, corresponding to the switches 15. Indeed, inside each housing 17 there is a central hole in which is inserted a switch 15.
  • This switch 15 is more particularly shown in figures 8 to 11 .
  • This is a conventional switch 15, with a first face 19 for electrical connection to the electronic card 11, provided with two pins 7 capable of being soldered to the card 11, and with a second face 18 for electrical connection to the electrode 9, fitted with a female end acting as a quick coupling.
  • this female fitting comprises a plurality of blades 20 hoses capable of exerting pressure on the electrode 9 which penetrates therein. In this case, there are four flexible blades 20 on either side of the electrode 9 which comes to rest on it.
  • each flexible blade 20 has a zigzag shape, making it possible to have several support points 21 on the electrode 9. In particular, each zigzag point 21 comes to bear on the electrode 9.
  • guide studs 14 extend on either side of the central orifice in the direction of the tubes 4. The purpose of these studs 14 is to guide the electrode 9 to 'at its insertion in the switch 15.
  • each housing 17 the faces 14a of the pads located opposite each other are bevelled in the direction of the central orifice so as to form guide ramps for the electrode 9 towards the central orifice where is the switch 15. These studs 14 thus draw a V inside which the electrode 9 is inserted. This guiding of the electrodes 9 makes it possible to improve the assembly between the heating body 2 and the distribution unit 3.
  • the faces 14b of the studs 14 located face-to-face between two successive housings 17 are oriented perpendicular to the docking station 6.
  • the docking station 6 comprises as many housings 17 as there are electrodes 9 present in the heating body 2, each housing 17 receiving an electrode 9.
  • the electrodes 9 each have a free end protruding from the tubes 4. Each free end has a male end piece 10 capable of entering the female end piece of the switch 15.
  • This male end piece 10 can be formed in one piece with the electrode 9, or may consist of a separate part mounted on the electrode 9, as is the case in the example visible in figures 13 and 14 .
  • the male end 10 corresponds to a lug whose first end 10a is mounted and riveted on the electrode 9 for example and whose second end 10b enters the female end of the switch 15.
  • the male ends 10 of the two electrodes 9 extend in the axial direction of the tube 4 but with a transverse offset.
  • the male ends 10 are thus located in staggered rows.
  • the docking station 6 has two staggered housings 17 according to the arrangement of the male ends 10 of the two electrodes 9 corresponding, one positive and the other negative.
  • the switches 15 inserted in these housings 17 are placed at a distance from each other, because it is important to respect an isolation distance between the switches 15 belonging to the positive current line and the switches 15 belonging to the negative current line.
  • the docking station 6 has two rows 6a, 6b of housings 17, the housings 17 of a row 6a being offset with respect to the housings 17 of the other row 6b.
  • One of the rows of housings 17 is located on a positive current line to which the positive electrodes 9 are connected and the other row is located on a negative current line to which the negative electrodes 9 are connected.
  • the docking station 6 is perforated between the adjacent housings 17, via windows 16. This allows the use of a minimum of material and the obtaining of a light bar.
  • the docking station 6 is designed in an electrically insulating material of the plastic type. Such a material also provides good resistance to temperature, non-flammability and humidity.
  • the docking station 6 is obtained by molding or by plastic injection.
  • connection between the heating body 2 and the distribution unit 3 takes place as follows.
  • the docking station 6 is positioned on the electronic card 11, so that its rib 23 comes to rest on the upper surface of the card 11.
  • the switches 15 are introduced into the housings 17 provided for this purpose, and more precisely into the holes of the housings 17.
  • the pins 7 of the switches 15 are then introduced into the small holes provided for this purpose in the electronic card 11.
  • the switches 15 then find themselves in a stable position in the housings 17 of the docking station 6, and it is possible to solder the pins 7 to the electronic card 11.
  • the last step then consists of inserting the male ends 10 of the electrodes 9 into the switches 15 of the docking station 6.
  • This last step can be carried out in a single gesture, via a rectilinear translation of the heating body 2 with respect to the docking station 6, since a switch 15 is provided opposite each male end 10.
  • the invention also relates to an air conditioning unit comprising a heating device 1 as described above.
  • Said air conditioning unit comprises an air flow circulation body inside which said heating device 1 is located.

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)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Details Of Fluid Heaters (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP18839826.7A 2017-12-19 2018-12-13 Dispositif de chauffage électrique avec station d'accueil des électrodes Active EP3728962B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1762533A FR3075554B1 (fr) 2017-12-19 2017-12-19 Dispositif de chauffage electrique avec station d'accueil des electrodes
PCT/FR2018/053250 WO2019122616A1 (fr) 2017-12-19 2018-12-13 Dispositif de chauffage electrique avec station d'accueil des electrodes

Publications (2)

Publication Number Publication Date
EP3728962A1 EP3728962A1 (fr) 2020-10-28
EP3728962B1 true EP3728962B1 (fr) 2023-08-16

Family

ID=61258453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18839826.7A Active EP3728962B1 (fr) 2017-12-19 2018-12-13 Dispositif de chauffage électrique avec station d'accueil des électrodes

Country Status (6)

Country Link
US (1) US20200309410A1 (zh)
EP (1) EP3728962B1 (zh)
JP (1) JP6999815B2 (zh)
CN (1) CN111742183B (zh)
FR (1) FR3075554B1 (zh)
WO (1) WO2019122616A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3716729A1 (en) 2019-03-26 2020-09-30 Mahle International GmbH Connector system and heater system
CN112584562A (zh) * 2019-09-30 2021-03-30 法雷奥汽车空调湖北有限公司 加热装置
CN110631259A (zh) * 2019-10-23 2019-12-31 沈阳汇智源电力工程技术服务有限公司 一种电极式热水锅炉

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Publication number Priority date Publication date Assignee Title
US20A (en) * 1836-08-31 Saddle-spbitirg
JP3820780B2 (ja) 1998-12-11 2006-09-13 株式会社デンソー 車両の暖房用熱交換器
US6729388B2 (en) * 2000-01-28 2004-05-04 Behr Gmbh & Co. Charge air cooler, especially for motor vehicles
JP3972813B2 (ja) * 2002-12-24 2007-09-05 セイコーエプソン株式会社 半導体装置の製造方法
JP3982471B2 (ja) 2003-09-10 2007-09-26 株式会社デンソー 電気式ヒータ
CN100402941C (zh) * 2004-03-22 2008-07-16 汉拏空调株式会社 电加热器
JP2007298241A (ja) 2006-05-01 2007-11-15 Calsonic Kansei Corp 電気ヒータ装置
DE502006008687D1 (de) * 2006-06-28 2011-02-17 Eberspaecher Catem Gmbh & Co Elektrische Heizvorrichtung
DE502007005351D1 (de) * 2007-07-20 2010-11-25 Eberspaecher Catem Gmbh & Co K Elektrische Heizvorrichtung insbesondere für Kraftfahrzeuge
JP2011152907A (ja) * 2010-01-28 2011-08-11 Mitsubishi Heavy Ind Ltd 電気式加熱装置及び車両用空気調和装置
EP2440005B1 (de) * 2010-10-08 2015-12-23 Eberspächer catem GmbH & Co. KG Elektrische Heizvorrichtung und Verfahren zur Herstellung
EP2440004B1 (de) * 2010-10-08 2015-02-25 Eberspächer catem GmbH & Co. KG Elektrische Heizvorrichtung
US9054456B2 (en) * 2012-11-29 2015-06-09 Tyco Electronics Corporation Power connector assembly having an alignment body
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JP2014225348A (ja) * 2013-05-15 2014-12-04 三菱重工オートモーティブサーマルシステムズ株式会社 熱媒体加熱装置およびその製造方法並びにそれを用いた車両用空調装置
FR3032388B1 (fr) * 2015-02-10 2018-07-27 Valeo Systemes Thermiques Dispositif de chauffage electrique
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FR3057817B1 (fr) * 2016-10-21 2019-12-13 Valeo Systemes Thermiques Dispositif de chauffage additionnel electrique
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Also Published As

Publication number Publication date
FR3075554B1 (fr) 2022-05-20
JP2021507197A (ja) 2021-02-22
CN111742183B (zh) 2022-05-17
JP6999815B2 (ja) 2022-02-10
US20200309410A1 (en) 2020-10-01
WO2019122616A1 (fr) 2019-06-27
FR3075554A1 (fr) 2019-06-21
CN111742183A (zh) 2020-10-02
EP3728962A1 (fr) 2020-10-28

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