EP1457743B1 - Electric heater,esp. for a vehicle - Google Patents
Electric heater,esp. for a vehicle Download PDFInfo
- Publication number
- EP1457743B1 EP1457743B1 EP20030290621 EP03290621A EP1457743B1 EP 1457743 B1 EP1457743 B1 EP 1457743B1 EP 20030290621 EP20030290621 EP 20030290621 EP 03290621 A EP03290621 A EP 03290621A EP 1457743 B1 EP1457743 B1 EP 1457743B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- elements
- heating
- stud
- contact plates
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 34
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 210000002105 tongue Anatomy 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 229910001369 Brass Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012799 electrically-conductive coating Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
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
-
- 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
- F24H3/0435—Structures comprising heat spreading elements in the form of fins
-
- 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
- F24H3/0447—Forms of the electrode terminals, e.g. tongues or clips
-
- 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
- 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
-
- 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
Definitions
- the invention relates to an electric heater, in particular for a motor vehicle according to the preamble of claim 1, known by the DE-A 197 32 010 ,
- Electric heaters as they pass through DE-A 197 32 010 have become known, especially for motor vehicles with consumption optimized engines are determined in which due to the high thermal efficiency is not enough heating power available. Therefore, the heating systems are additionally equipped with an electric heater, a so-called auxiliary heater.
- This heater consists of a heating block with a plurality of mutually parallel electrical heating elements, between which corrugated fins are arranged to improve the heat transfer to the air.
- the heating elements consist of two contact plates, between which PTC elements are arranged. One of the contact plates each has an electrical connection element, for. B. in the form of an angled end portion of the sheet, via which the contact plate is connected to a pole of an electrical supply.
- the EP 0 616 486A1 discloses an electric heater with contact plates, corrugated fins and PTC elements.
- the DE 101 38 204 A1 discloses a contact layer on a base body.
- the EP 0 443 291 A2 discloses an electrical connector pair with tin coating.
- the contact plate consists of only one part and is therefore easier to manufacture and assemble. As a result, the heating element and thus the entire heater is easier and cheaper. In addition, due to the highly electrically conductive coating results in a low contact resistance of the contact connection and thus a small voltage drop between the voltage source and the contact plate.
- the heating device according to the invention is to be understood in particular a heating block with electrical heating elements with PTC elements, wherein the PTC elements made of ceramic or plastic can exist with PTC effect.
- the heating block or the electric heater may also have other, ie, similar assemblies, which also consist of contact plates and intermediate elements and heat exchange elements, for. B. are composed in the form of corrugated ribs. Such assemblies have z. B. no heating elements, but so-called standardized functional elements according to the earlier German application with the file number 102 08 152 on.
- a coating with high electrical conductivity can preferably be achieved by tinning the contact tongue or else by coating with copper or silver.
- the contact tongue is designed in its shape and dimensions as a standardized tab, so that they can be part of a flat connector together with a standard receptacle, for example, according to DIN 46 247. This is on the one hand a standard design of the contact terminal, but on the other hand created a cheaper and lighter version for a connector.
- Fig. 1 shows an electric heater 1, which is used as additional heating for installation in a heating or air conditioning system of a motor vehicle, not shown.
- This heating device 1 has a mounting frame 2, which consists of a heating block 3, consisting of heating elements 4, corrugated fins 5 and so-called standardizing functional elements 6.
- a heating block 3 consisting of heating elements 4, corrugated fins 5 and so-called standardizing functional elements 6.
- the heating block 3 consists not only of the known heating elements 4, but also of additional functional elements 6, which are similarly constructed.
- the mounting frame 2 has a mounting flange 7 and a connector housing 8 in its upper region.
- the heating device 1 can be used in an air flow channel, not shown, a heating system and fastened there by means of the mounting flange 7 and sealed.
- the power supply of the heating elements 4 via a connector, not shown, which is inserted into the connector housing 8.
- Fig. 2 shows a detail X from Fig. 1
- the heating element 4 consists of two differently polarized contact plates 9, 10, between which a PTC element 11 is located in electrically and thermally conductive connection.
- Per heating element 4 a plurality of PTC elements 11 are distributed over the length thereof and held in a known manner between the contact plates 9, 10.
- the outer sides of the contact plates 9, 10 are in heat-conducting and electrical connection with the corrugated fins 5, which serve to increase the heat exchange surface and thus form heat exchange elements.
- the PTC element 11 is usually made of a ceramic material, but it is also possible to use a plastic with PTC effect for heating purposes instead of the ceramic element.
- Fig. 3 shows a section along the line III-III through the PTC element 11, the contact plates 9, 10 and the corrugated fins 5 in Fig. 2 ,
- the air flow direction is indicated by an arrow L; a flow in the opposite direction according to a dashed arrow L 'is also possible.
- the heat generated by energizing the PTC element 11 is - as known from the prior art - passed through the contact plates 9, 10 in the corrugated fins 5 and delivered through this to the overflowing air, which is thereby heated and used to heat the passenger compartment ,
- Fig. 4 shows one of the two contact sheets 9, 10, which is shown here as a complete item 12.
- the contact plate 12 is formed as a metal strip and made of an aluminum alloy or brass, as well as the corrugated fins 5 (see. Fig. 1 to 3 ).
- the contact plate 12 has a length I and a width b - in this area, not shown here PTC elements 11 (or functionally similar elements) are arranged.
- the left in the drawing, the end of the contact plate 12 has a contact tongue 13, which has a width a, which is smaller than the width b of the contact plate 12.
- Contact plate 12 and contact tongue 13 are integrally stamped from a metal sheet.
- the contact tongue 13 has a circular opening 14 in approximately central position.
- Fig. 4a shows a detail Y according to Fig. 4 That is, essentially the contact tongue 13 with a circular opening 14.
- the contact tongue 13 is coated with a coating 15, which is represented by a cross-hatching.
- This coating 15 is arranged at least on the front and back of the contact tongue 13 and is preferably made of tin.
- a tin layer can be produced, for example, by immersing the contact tongue 13 in a tin bath.
- Tin is a good electrical conductor and thus improves the electrical conductivity of the contact plate 12 made of an aluminum alloy or of brass.
- the shape of the contact tongue 13 corresponds to that of a standardized flat plug which is plugged into a standardized plug-in sleeve according to DIN 46 247.
- the tinning of the contact tongues 13 could also be effected by a coating with copper or silver, whereby an even lower contact resistance and thus an even lower voltage drop between the voltage source and the contact plate 12 could be achieved.
- the circular Opening 14 corresponds to a so-called, not shown here Rastarmze the likewise not shown receptacle according to DIN 46 247. Through the circular opening 14 and the locking lug in the Stekkerhülse a locking connection between the contact tongue 13 and the plug-in sleeve, not shown.
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)
Description
Die Erfindung betrifft eine elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug nach dem Oberbegriff des Patentanspruches 1, bekannt durch die
Elektrische Heizeinrichtungen, wie sie durch die
Die
Es ist Aufgabe der vorliegenden Erfindung, bei einer Heizeinrichtung der eingangs genannten Art die elektrischen Kontaktanschlüsse zu verbessern, insbesondere hinsichtlich ihrer Kosten, ihres Gewichts und ihres fertigungstechnischen Aufwandes zu reduzieren.It is an object of the present invention, in a heating device of the type mentioned to improve the electrical contact connections, in particular to reduce their costs, their weight and their manufacturing effort.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Das Kontaktblech besteht nur noch aus einem Teil und ist damit einfacher herstellbar und montierbar. Dadurch wird das Heizelement und damit auch die gesamte Heizeinrichtung leichter und billiger. Darüber hinaus ergibt sich aufgrund der elektrisch gut leitenden Beschichtung ein geringer Übergangswiderstand der Kontaktverbindung und damit ein geringer Spannungsabfall zwischen der Spannungsquelle und dem Kontaktblech. Unter der erfindungsgemäßen Heizeinrichtung ist insbesondere ein Heizblock mit elektrischen Heizelementen mit PTC-Elementen zu verstehen, wobei die PTC-Elemente aus Keramik oder Kunststoff mit PTC-Effekt bestehen können. Darüber hinaus kann der Heizblock bzw. die elektrische Heizeinrichtung auch andere, d. h. ähnliche Baugruppen aufweisen, die ebenfalls aus Kontaktblechen und Zwischenelementen sowie Wärmetauschelementen, z. B. in Form von Wellrippen zusammengesetzt sind. Solche Baugruppen weisen z. B. keine Heizelemente, sondern so genannte standardisierte Funktionselemente gemäß der älteren deutschen Anmeldung mit dem Aktenzeichen
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Eine Beschichtung mit hoher elektrischer Leitfähigkeit kann bevorzugt durch eine Verzinnung der Kontaktzunge oder auch durch eine Beschichtung mit Kupfer oder Silber erzielt werden. Vorteilhafterweise ist die Kontaktzunge in ihrer Form und ihren Abmessungen wie ein genormter Flachstecker ausgebildet, sodass sie zusammen mit einer genormten Steckhülse, beispielsweise nach DIN 46 247, Teil einer Flachsteckerverbindung sein kann. Damit ist einerseits eine normgerechte Gestaltung des Kontaktanschlusses, jedoch andererseits eine verbilligte und leichtere Ausführung für eine Steckverbindung geschaffen.Advantageous embodiments of the invention will become apparent from the dependent claims. A coating with high electrical conductivity can preferably be achieved by tinning the contact tongue or else by coating with copper or silver. Advantageously, the contact tongue is designed in its shape and dimensions as a standardized tab, so that they can be part of a flat connector together with a standard receptacle, for example, according to DIN 46 247. This is on the one hand a standard design of the contact terminal, but on the other hand created a cheaper and lighter version for a connector.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschreiben. Es zeigen
- Fig. 1
- eine elektrsiche Heizeinrichtung in Form eines Heizblockes,
- Fig. 2
- eine Einzelheit X aus
Fig. 1 , - Fig. 3
- einen Schnitt entlang der Linie III-III in
Fig. 2 , - Fig. 4
- ein Kontaktblech eines Heizelementes des Heizblockes und
- Fig. 4a
- eine Einzelheit Y aus
Fig. 4 .
- Fig. 1
- an electric heating device in the form of a heating block,
- Fig. 2
- a detail X out
Fig. 1 . - Fig. 3
- a section along the line III-III in
Fig. 2 . - Fig. 4
- a contact plate of a heating element of the heating block and
- Fig. 4a
- a detail Y out
Fig. 4 ,
Der Einbaurahmen 2 weist in seinem oberen Bereich einen Befestigungsflansch 7 und ein Steckergehäuse 8 auf. Die Heizeinrichtung 1 kann in einen nicht dargestellten Luftströmungskanal einer Heizungsanlage eingesetzt und dort mittels des Befestigungsflansches 7 befestigt und abgedichtet werden. Die Stromversorgung der Heizelemente 4 erfolgt über einen nicht dargestellten Stecker, der in das Steckergehäuse 8 eingesetzt wird.The
- 11
- HeizreinrichtungHeizreinrichtung
- 22
- Einbaurahmenmounting frame
- 33
- Heizblockheating block
- 44
- Heizelementheating element
- 55
- Wellrippecorrugated fin
- 66
- standardisiertes Funktionselementstandardized functional element
- 77
- Befestigungsflanschmounting flange
- 88th
- Steckergehäuseplug housing
- 99
- Kontaktblech, teilweiseContact sheet, partial
- 1010
- Kontaktblech, teilweiseContact sheet, partial
- 1111
- PTC-ElementPTC element
- 1212
- Kontaktblech, ganzContact sheet, whole
- 1313
- Kontaktzungecontact tongue
- 1414
- kreisförmige Öffnungcircular opening
- 1515
- Beschichtung (Verzinnung)Coating (tinning)
Claims (2)
- An electric heater (1), especially for a motor vehicle, comprising units that are assembled into a heating block (3) as heating elements, each of the units comprising contact plates (9, 10), intermediate elements, in particular PCT elements (11), and heat exchanger elements (5), in particular corrugated fins (5), and at least one contact plate comprising an electric contact terminal, a heating element being composed of two contact plates having different polarity and several PTC elements disposed between the two contact plates in electrically and thermally conductive connection, and the outer sides of the contact plates being in thermally conductive and electrical connection with the corrugated fins, and the contact terminal being designed as a stud (13) and integral with the contact plate (12), characterized in that the contact plates (9, 10, 12) are produced from an aluminum alloy, and the stud (13) is covered by a layer (15) made of tin (Sn) on the front and back sides, the stud (13) being designed in the manner of a flat-pin plug and being part of a flat-ping plug connection together with a receptacle.
- The heater according to claim 1, characterized in that the stud is provided with a circular opening (14) approximately in the central position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20030290621 EP1457743B1 (en) | 2003-03-12 | 2003-03-12 | Electric heater,esp. for a vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20030290621 EP1457743B1 (en) | 2003-03-12 | 2003-03-12 | Electric heater,esp. for a vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1457743A1 EP1457743A1 (en) | 2004-09-15 |
EP1457743B1 true EP1457743B1 (en) | 2013-12-25 |
Family
ID=32749012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030290621 Expired - Lifetime EP1457743B1 (en) | 2003-03-12 | 2003-03-12 | Electric heater,esp. for a vehicle |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1457743B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103388891B (en) * | 2012-05-11 | 2016-08-31 | 珠海格力电器股份有限公司 | Electric heater unit and air-conditioner |
EP3124889B1 (en) * | 2015-07-31 | 2020-08-26 | MAHLE International GmbH | Electric heating device and heating or air conditioning facility with such an electrical heating device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5471034A (en) * | 1993-03-17 | 1995-11-28 | Texas Instruments Incorporated | Heater apparatus and process for heating a fluid stream with PTC heating elements electrically connected in series |
US5596335A (en) * | 1994-12-27 | 1997-01-21 | Ppg Industries, Inc. | Electrical connector |
DE19732010A1 (en) | 1997-07-25 | 1999-01-28 | Behr Gmbh & Co | Electric heating device, in particular for a motor vehicle |
DE10138204B4 (en) * | 2001-08-03 | 2004-04-22 | Ami Doduco Gmbh | Electric contact |
DE10139953A1 (en) * | 2001-08-21 | 2003-03-27 | Stolberger Metallwerke Gmbh | Material for a metal band |
DE10208152A1 (en) | 2002-02-26 | 2003-09-04 | Behr France Sarl | Apparatus for exchanging heat |
-
2003
- 2003-03-12 EP EP20030290621 patent/EP1457743B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1457743A1 (en) | 2004-09-15 |
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