EP2516938A1 - Dispositif de chauffage electrique et procede d'assemblage correspondant - Google Patents
Dispositif de chauffage electrique et procede d'assemblage correspondantInfo
- Publication number
- EP2516938A1 EP2516938A1 EP10805230A EP10805230A EP2516938A1 EP 2516938 A1 EP2516938 A1 EP 2516938A1 EP 10805230 A EP10805230 A EP 10805230A EP 10805230 A EP10805230 A EP 10805230A EP 2516938 A1 EP2516938 A1 EP 2516938A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminals
- heating
- heating device
- clipping
- frame
- 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.)
- Granted
Links
- 238000005485 electric heating Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 98
- 230000000295 complement effect Effects 0.000 claims description 12
- 238000003303 reheating Methods 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 210000002105 tongue Anatomy 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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 subject of the invention is an electric heating device for heating an air flow therethrough, said heating device comprising:
- control unit for said heating modules comprising second electrical terminals connected on the one hand to said first terminals and configured to be connected on the other hand to a power supply source for electrically powering said first terminals,
- control box further comprises means for positioning said heating modules relative to said housing to delimit an adequate operating position before connecting said first and second terminals during assembly of said heater.
- 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.
- Said heater may further comprise one or more of the following features, taken separately or in combination:
- the positioning means are made in one piece with said housing,
- the positioning means comprise positioning stops against which said heating modules are supported, via an edge of the heating module, to define the appropriate positioning of said first terminals with respect to said second terminals,
- said heating device comprises a frame for holding said heating modules and the positioning means comprise guide members configured to fit into complementary guide sleeves provided on the frame,
- the guide members are arranged parallel to said second terminals and in the positioning stops are formed by protuberances on the guide members extending towards said second terminals,
- the guide members respectively have a substantially parallelepipedal general shape with a window in which a guide finger extends longitudinally
- the positioning means comprise clipping teeth configured to cooperate with counter-clipping teeth provided on the frame,
- the clipping teeth are carried by the free ends of the guide fingers
- the clipping teeth respectively have a height greater than or equal to the height of the clipping teeth.
- the invention also relates to a method of assembling a heating device as defined above, characterized in that it comprises the following steps:
- the first electrical terminals of said heating modules are placed on the second electrical terminals of the control box,
- said heating modules are positioned relative to said housing so that said heating modules bear against the positioning stops, and
- Said assembly method may further comprise one or more of the following characteristics, taken separately or in combination:
- the said heating modules are translated in the direction of the said housing until the said heating modules bear against the abutments
- a translation is carried out of said housing in the direction of said heating modules until said stops come to bear against said heating modules; the heating modules are translated into reception housings configured in the frame by bearing abutments on the edge of the housing; heating module,
- said assembly method comprises a step in which the guide members are inserted into the complementary guide sleeves over a predefined guide distance during which the clipping teeth ending the guide fingers remain free, and the clipping teeth are placed against the counter-teeth of clipping to secure the frame and said housing by clipping,
- said assembly method comprises a preliminary step in which the frame is rotated to place said first terminals on said second terminals.
- FIG. 1 is a schematic partial view of a heating apparatus for a motor vehicle
- FIG. 2 illustrates an electric heating device of the heating apparatus of FIG. 1,
- FIG. 3 represents an exemplary embodiment of a heating module of the heating device
- FIG. 4a shows the heating device of FIG. 2 before assembly of the frame and the control box of said heating device
- FIG. 4b is a partial perspective view of FIG. 4a
- FIG. 4c is another partial perspective view of FIG. 4a
- FIG. 5 represents a partial view of the assembled heating device of FIG. 2,
- FIG. 6 is a partial side view of FIG. 4a
- FIG. 7 is a partial view in longitudinal section of the heating device of FIG. 2 before fixing the frame and the housing of said heating device, and
- FIG. 8 is a partial longitudinal sectional view of the heating device of Figure 2 after fixing the frame and the housing of said heater.
- 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 air flow 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 generally parallelepiped shaped frame 21, receiving electric heating modules 23 arranged so as 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 frictional force on the heating module 23 during the insertion of the heating module 23 into the housing 25, for example from the left in FIG. 2.
- the tongues 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 shown in full in Figure 3.
- the heat sink 41 extends the full 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 set 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 more clearly visible in FIGS. 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.
- 57 respectively have a substantially parallelepiped shape with a window 61 in which extends longitudinally a guide pin 63.
- each guide pin 63 terminates at its free end by a clipping tooth 65 better visible in FIG. 7.
- This clipping tooth 65 is configured to cooperate with a clipping counter-tooth 67 provided in FIG. the sleeve 59 complementary to the guide member 57.
- These teeth 65 and counter-teeth 67 allow clipping attachment of the frame 21 and the housing 47.
- the teeth 65 have a height h greater than or equal to the height 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 into 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 (FIG. ) and then overlap to lead in the example shown in Figure 8, in a window 69 of the sleeves 59 complementary.
- 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-parts made respectively in one piece with an associated half-housing of the housing 47.
- the two half-parts of a positioning means 53 are fixed between it, for example by clipping using a clipping means as seen in 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 (FIG. 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 relative to the second electrical terminals 51 by placing the heating modules 23 in abutment 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 (FIG. 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)
Abstract
Description
Claims
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 true EP2516938A1 (fr) | 2012-10-31 |
EP2516938B1 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 (fr) |
JP (1) | JP5746211B2 (fr) |
CN (1) | CN102770720B (fr) |
FR (1) | FR2954468B1 (fr) |
WO (1) | WO2011076824A1 (fr) |
Families Citing this family (5)
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 |
Family Cites Families (8)
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 |
EP1253807A3 (fr) * | 2000-05-23 | 2003-02-05 | Catem GmbH & Co.KG | Dispositif de chauffage électrique, utilisé en particulier dans les véhicules |
FR2838599B1 (fr) * | 2002-04-11 | 2004-08-06 | Valeo Climatisation | Dispositif de chauffage electrique, notamment pour appareil de chauffage et ou climatisation de vehicule |
ES2242114T3 (es) * | 2003-02-28 | 2005-11-01 | CATEM GMBH & CO.KG | Dispositivo de calefaccion electrico con zonas de calefaccion. |
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 |
-
2009
- 2009-12-23 FR FR0906302A patent/FR2954468B1/fr not_active Expired - Fee Related
-
2010
- 2010-12-22 EP EP10805230.9A patent/EP2516938B1/fr active Active
- 2010-12-22 CN CN201080064677.1A patent/CN102770720B/zh active Active
- 2010-12-22 JP JP2012545312A patent/JP5746211B2/ja active Active
- 2010-12-22 WO PCT/EP2010/070454 patent/WO2011076824A1/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011076824A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2013515940A (ja) | 2013-05-09 |
EP2516938B1 (fr) | 2017-04-05 |
CN102770720A (zh) | 2012-11-07 |
CN102770720B (zh) | 2015-12-02 |
WO2011076824A1 (fr) | 2011-06-30 |
FR2954468A1 (fr) | 2011-06-24 |
FR2954468B1 (fr) | 2012-06-08 |
JP5746211B2 (ja) | 2015-07-08 |
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