EP2516938B1 - Dispositif de chauffage electrique et procede d'assemblage correspondant - Google Patents

Dispositif de chauffage electrique et procede d'assemblage correspondant Download PDF

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Publication number
EP2516938B1
EP2516938B1 EP10805230.9A EP10805230A EP2516938B1 EP 2516938 B1 EP2516938 B1 EP 2516938B1 EP 10805230 A EP10805230 A EP 10805230A EP 2516938 B1 EP2516938 B1 EP 2516938B1
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EP
European Patent Office
Prior art keywords
heating device
terminals
frame
clipping
teeth
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
EP10805230.9A
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German (de)
English (en)
French (fr)
Other versions
EP2516938A1 (fr
Inventor
Stéphane De Souza
Philippe Legros
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
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Publication of EP2516938A1 publication Critical patent/EP2516938A1/fr
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Publication of EP2516938B1 publication Critical patent/EP2516938B1/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
    • 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

Definitions

  • the invention relates to an electric heating device intended to be traversed by a flow of air to be heated.
  • the invention also relates to a method of assembling such a heating device.
  • Such an electric heating device otherwise called additional electric radiator, is generally mounted in an air circulation duct to be heated downstream of a heat exchanger to heat the air intended for heating the passenger compartment of a vehicle. and defogging and defrosting by heat exchange between a flow of air passing through the heat exchanger and a liquid, usually the engine coolant.
  • the electric heating device comprises heating modules arranged to be exposed directly to the air passing through the heating device to achieve an almost immediate heat build-up when reheating by the heat exchanger is insufficient.
  • the operation of the electric heater is temporarily controlled until the heat exchanger alone can provide adequate air heating.
  • the control of the heater is provided by a power supply circuit mounted for example on a printed circuit board in a control box on the heater.
  • This power supply circuit is connected to a power source and is further connected to the electrical terminals of the heating modules.
  • the electrical terminals of the heating modules are connected to corresponding electrical terminals connected to the power supply circuit.
  • the movement to connect the corresponding electrical terminals is not limited and it has been found that the electrical terminals connected to the supply circuit can be put in strain as well as the supply circuit , causing mechanical stress of the printed circuit, which should be avoided.
  • the document EP 2 056 036 A1 shows the preamble of claim 1.
  • the invention therefore aims to overcome this drawback of the prior art.
  • the positioning means therefore make it possible to limit the assembly movement of the electric heating modules to the control box when the heating modules are correctly positioned, thus avoiding stressing the electrical terminals of the control box.
  • the figure 1 shows a part of a heater and / or air conditioning 1 of a motor vehicle, comprising a housing 3 defining a channel 5 for the passage of the flow of air to be heated.
  • the channel 5 brings the air to the heating and defogging / defrosting vents 7,9 to be selectively distributed in the passenger compartment according to the mixer and distribution flaps positions 11.
  • the air flow in the channel 5 is produced by a fan 13, or blower, receiving outside air or circulating air from the passenger compartment.
  • the heating of the air when necessary, is provided by a possible fluid heat exchanger 15, using the engine coolant as heat transfer fluid and by an electric heater 17, otherwise called electric heater.
  • the exchanger 15 and the electric heater 17 are arranged in the channel 5, the first being located upstream of the second. In the absence of exchanger 15, the heating of the air is provided by the single electric heating device 17.
  • such an electric heating device 17 comprises a heating block 19 having a frame 21 of substantially parallelepipedal general shape, receiving electric heating modules 23 arranged to be traversed by the flow of air to be heated.
  • Such an electric heater 17 can reach high temperatures in operation, for example of the order of 150 ° C, the frame 21 is made of a material, for example plastic, capable of withstanding these high temperatures reached in operation.
  • These heating modules 23 are arranged parallel to each other and extend over the entire length of the frame 21 by being received in receiving housings 25 made in the frame 21, these housings 25 being delimited in the illustrated example by means of longitudinal walls 27 of the frame 21.
  • the heating modules 23 are for example interposed between perforated zones of the frame 21.
  • the frame 21 has flexible tongues 31 for exerting a friction force on the heating module 23 during the insertion of the heating module 23 into the housing 25, for example from the left on the figure 2 .
  • the tabs 31 form a non-zero angle with respect to the insertion direction of the heating modules 23 in the housings 25.
  • some of the longitudinal walls 27 delimiting the housings 25 for the heating modules 23, have at least one projection 33, extending towards the inside of the housing 25, so as to ensure the guiding of the module heating 23 when inserted into the housing 25 and its retention in the housing 25 once inserted.
  • the frame 21 may also have guide ribs 35, for example in an "X" shape to allow the guidance of the heating modules 23 during their insertion into the housing 25 and also their maintenance once inserted.
  • a heating module 23 may comprise resistive elements of positive temperature coefficient (PTC) type. These elements are protected against overheating or overcurrent.
  • PTC positive temperature coefficient
  • a heating module 23 comprises two electrodes 39 which extend longitudinally, each enclosing a heat sink 41 formed for example of a pleated or corrugated metal strip and bearing against the resistive elements or PTC stones 43.
  • a heat sink 41 is not represented in its entirety on the figure 3 .
  • the heat sink 41 extends over the entire length in the electrode 39.
  • the electrodes sandwich the resistive elements while the heat sinks formed by the metal ribbon are placed against the free outer faces of said electrodes.
  • the heating module 23 consists of two heat sinks which enclose two electrodes between which are placed CTP stones or resistive elements.
  • the two electrodes 39 of a heating module 23 are traversed, by means of two first electrical terminals 45, by different electrical potentials, for example a first potential available in the vehicle, such as the battery voltage, and a second potential, such as mass.
  • a first potential available in the vehicle such as the battery voltage
  • a second potential such as mass
  • the control of the electric heater 17 is therefore provided by a power supply circuit (not shown) of the heating modules 23 mounted on one side of the frame 21 in a control box 47 otherwise called "driver".
  • the power supply circuit is mounted for example on a printed circuit board.
  • This power supply circuit is connected to a power supply source via two metal conductors 49 and 49 ', also called "bus bars", of which a first 49 can be put to the first potential, and the second 49 'to the second potential.
  • the power supply circuit can receive information on the power to be delivered through a connector 50.
  • the power supply circuit comprises transistors (not shown) to allow or not the passage of current in the heating modules 23.
  • second electrical terminals 51 connected to the electrical supply circuit conduct the electric current to the corresponding first electrical terminals 45 of the heating modules 23 when the transistor concerned allows the passage of current.
  • the electric heating device 17 comprises three heating modules 23
  • six second electrical terminals 51 are provided for supplying power to the first six corresponding terminals 45 of the heating modules 23.
  • the housing 47 further comprises positioning means 53 of the heating modules which are more visible on the Figures 4a to 4c .
  • positioning means 53 comprise in the illustrated example positioning stops 55 to limit the assembly movement, here a translation, and define the appropriate operating position of the terminals 45 and 51 relative to each other.
  • the stops 55 extend towards the second terminals 51.
  • a first stop 55 is above a terminal 51 and a second stop 55 is below the other terminal 51 for better recovery forces.
  • the means of positioning 53 may also comprise guide members 57 for centering the frame 21 relative to the housing 47.
  • These guide members 57 cooperate with complementary guide sleeves 59 provided on the frame 21. More specifically, the guide members 57 are inserted into the complementary sleeves 59 when the frame 21 and the casing 47 are assembled.
  • These guide members 47 provide a lateral centering of the frame 21 ( figure 5 ) and a centering in the thickness ( figure 6 ).
  • the guide members 47 have slightly smaller dimensions than the complementary sleeves 49 to allow the insertion of the guide members 47 in the sleeves 49 complementary.
  • the positioning means 53 thus allow both a guiding and centering function of the frame 21 before attaching it to the casing 47 as well as a function of correctly positioning the electrical terminals 45 and 51 relative to one another .
  • the guide members 57 are arranged parallel to the second terminals 51 and the stops 55 are formed by protuberances on the guide members 57 which extend towards the second terminals 51.
  • the guide members 57 respectively have a substantially parallelepipedal shape with a window 61 in which extends longitudinally a guide pin 63.
  • each guide pin 63 ends at its free end by a clipping tooth 65 better visible on the figure 7 .
  • This clipping tooth 65 is configured to cooperate with a clipping counter-tooth 67 provided in the sleeve 59 complementary to the guide member 57.
  • These teeth 65 and counter-teeth 67 allow attachment clipping of the frame 21 and the housing 47.
  • the teeth 65 have a height h greater than or equal to the height h ' of the counter-teeth 67.
  • the teeth 65 With the teeth 65 being carried by the guide fingers 63, the latter present a sufficient length so that during the insertion of the guide members 57 in the complementary sleeves 59, the teeth 65 remain unrestrained over a predefined guiding distance d , until they come into abutment against the counter-teeth 67 ( figure 7 ) and then overlap them to lead in the example shown on the figure 8 in a window 69 of the complementary sleeves 59.
  • the positioning means 53 thus still provide a third function of fixing the frame 21 and the housing 47.
  • control unit 47 is formed of two half-housings fixed together, for example by clipping.
  • each positioning means 53 is formed of two half-portions made respectively in one piece with an associated half-casing of the casing 47.
  • the two half-portions of a positioning means 53 are fixed between it, for example by clipping using a clipping means as noted on the figures 5 , 7 and 8 .
  • This clipping means may be a clipping tab 71 carried by a half portion of the positioning means 53 which engages in an associated orifice provided on the other half-portion of the positioning means 53.
  • the heating device 17 may comprise a heel 73 on the side of the frame 21 opposite the side carrying the control box 47, and formed in one piece with the frame 21, for example by molding.
  • This heel 73 forms a lateral closure of the housings 25 of the heating modules 23 in the frame 21.
  • the heel 73 may include openings 75 to be traversed by the flow of air to be heated to balance the pressure losses, and avoid temperature differences at the output of the electric heater 17.
  • This heel 73 may also have a hollow tubular shape which makes it possible to place the heel 73 on an associated assembly support (not shown) for the assembly of the heating device 17.
  • an assembly support may comprise a rotary base (not shown) which engages in the hollow heel 73 so as to be able to rotate the frame 21 to place the first terminals 45 on the second terminals 51 and to avoid a bad overlap of the terminals 45 and 51 or else a frontal shock during assembly.
  • the assembly of the heating device 17 is carried out as follows.
  • a first step ( figure 4a ) the first electrical terminals 45 of the heating modules 23 are placed on the electrical terminals 51 of the housing 47 and the heating modules 23 are positioned in a predefined operating position with respect to the housing 47 more precisely with respect to the second electrical terminals 51 by placing the heating modules 23 bearing against the stops 55 of the positioning means 53 provided on the housing 47.
  • the heating modules 23 pushes in a translational movement the heating modules 23 towards the housing 47 or conversely pushes the housing 47 in a translational movement towards the heating modules 23.
  • the movement of translation is implemented by the support stops 55 on the edge 100 of the heating module 23.
  • the frame 21 and the housing 47 are fixed, for example by clipping.
  • the guide members 57 are inserted into the complementary guide sleeves 59 in order to center the frame 21 over a distance d ( figure 7 ) until the clipping teeth 65 cooperate with the clipping counter-teeth 67 ( figure 8 ).
  • This assembly method may comprise a preliminary step in which the housing 47, for example previously assembled, is positioned on an assembly support and in which the heel 73 is placed on a rotary base enabling the frame 21 to be rotated. in the direction of the housing 47 so that the first terminals 45 are placed above the second terminals 51 in the figures illustrated.
  • the assembly method may further comprise a step in which the heating modules 23 are inserted into the housings 25 of the frame 21, the modules heaters 23 being guided by the protrusions 33 or the guide ribs 35.
  • the positioning means 53 carried by the housing 47 make it easier to assemble the heating device 17, more specifically the assembly of the frame 21 with the housing 47 and the connection of the corresponding electrical terminals 45 and 51, guaranteeing a good positioning of these terminals.

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)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
EP10805230.9A 2009-12-23 2010-12-22 Dispositif de chauffage electrique et procede d'assemblage correspondant Active EP2516938B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0906302A FR2954468B1 (fr) 2009-12-23 2009-12-23 Dispositif de chauffage electrique et procede d'assemblage correspondant
PCT/EP2010/070454 WO2011076824A1 (fr) 2009-12-23 2010-12-22 Dispositif de chauffage electrique et procede d'assemblage correspondant

Publications (2)

Publication Number Publication Date
EP2516938A1 EP2516938A1 (fr) 2012-10-31
EP2516938B1 true EP2516938B1 (fr) 2017-04-05

Family

ID=42557507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10805230.9A Active EP2516938B1 (fr) 2009-12-23 2010-12-22 Dispositif de chauffage electrique et procede d'assemblage correspondant

Country Status (5)

Country Link
EP (1) EP2516938B1 (ja)
JP (1) JP5746211B2 (ja)
CN (1) CN102770720B (ja)
FR (1) FR2954468B1 (ja)
WO (1) WO2011076824A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3032386B1 (fr) * 2015-02-10 2018-05-25 Valeo Systemes Thermiques Boitier d'un dispositif de chauffage electrique
FR3032588B1 (fr) * 2015-02-10 2017-02-17 Valeo Systemes Thermiques Dispositif de chauffage electrique et element de verrouillage associe
FR3057816B1 (fr) * 2016-10-21 2019-12-13 Valeo Systemes Thermiques Dispositif de chauffage additionnel electrique
DE102018200433A1 (de) * 2018-01-11 2019-07-11 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
FR3079713A1 (fr) * 2018-03-29 2019-10-04 Valeo Systemes Thermiques Dispositif de chauffage electrique et installation de chauffage, ventilation et/ou climatisation comportant un tel dispositif de chauffage electrique
CN111619303A (zh) * 2019-02-28 2020-09-04 法雷奥汽车空调湖北有限公司 具有壳体组件的加热装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2722561B1 (fr) * 1994-07-12 1996-09-20 Aerospatiale Dispositif de generation d'un courant d'air chaud
DE50011929D1 (de) * 2000-05-23 2006-01-26 Catem Gmbh & Co Kg Elektrische Heizvorrichtung, insbesondere für den Einsatz in Kraftfahrzeugen
FR2838599B1 (fr) * 2002-04-11 2004-08-06 Valeo Climatisation Dispositif de chauffage electrique, notamment pour appareil de chauffage et ou climatisation de vehicule
ATE295281T1 (de) * 2003-02-28 2005-05-15 Catem Gmbh & Co Kg Elektrische heizvorrichtung mit heizzonen
FR2855933B1 (fr) * 2003-06-06 2006-06-09 Valeo Climatisation Dispositif de chauffage electrique, notamment pour un vehicule automobile
KR100445722B1 (ko) * 2003-11-18 2004-08-26 우리산업 주식회사 히트 로드 조립체 및 이를 포함하는 차량용 프리히터
FR2897744B1 (fr) * 2006-02-17 2008-05-09 Valeo Systemes Thermiques Chassis porteur d'elements chauffants pour un radiateur electrique d'une installation de ventilation, de chauffage et/ou de climatisation.
FR2922817B1 (fr) * 2007-10-31 2012-12-21 Valeo Systemes Thermiques Dispositif de chauffage electrique d'un flux d'air circulant a l'interieur d'une installation de ventilation, de chauffage et/ou de climatisation d'un vehicule automobile

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
FR2954468A1 (fr) 2011-06-24
JP2013515940A (ja) 2013-05-09
JP5746211B2 (ja) 2015-07-08
EP2516938A1 (fr) 2012-10-31
CN102770720A (zh) 2012-11-07
WO2011076824A1 (fr) 2011-06-30
CN102770720B (zh) 2015-12-02
FR2954468B1 (fr) 2012-06-08

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