EP0135704B1 - Widerstandsheizelement - Google Patents

Widerstandsheizelement Download PDF

Info

Publication number
EP0135704B1
EP0135704B1 EP84108800A EP84108800A EP0135704B1 EP 0135704 B1 EP0135704 B1 EP 0135704B1 EP 84108800 A EP84108800 A EP 84108800A EP 84108800 A EP84108800 A EP 84108800A EP 0135704 B1 EP0135704 B1 EP 0135704B1
Authority
EP
European Patent Office
Prior art keywords
heating element
resistance heating
element according
strip
bend
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
Application number
EP84108800A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0135704A1 (de
Inventor
Manfred Brandstäter
Alfred Dipl.-Ing. Könnemann
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.)
Grote and Hartmann GmbH and Co KG
Original Assignee
Grote and Hartmann GmbH and Co KG
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.)
Filing date
Publication date
Application filed by Grote and Hartmann GmbH and Co KG filed Critical Grote and Hartmann GmbH and Co KG
Publication of EP0135704A1 publication Critical patent/EP0135704A1/de
Application granted granted Critical
Publication of EP0135704B1 publication Critical patent/EP0135704B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting

Definitions

  • the invention relates to a resistance heating element with a heating conductor consisting of a one-piece sheet metal stamping strip and running in a meandering manner in a longitudinal plane, the sheet metal stamping strip being slidably held in the holder in the region of meandering arches.
  • Such a resistance heating element is suitable for. B. for an intake air line between the carburetor and the engine block of an internal combustion engine, wherein the resistance heating element is flushed with a fluid to heat it.
  • Such a resistance heating element is known from DE-C-650 676.
  • the meandering heating conductor is made from a rectangular sheet metal strip, in which the latter is cut alternately from the two long sides. The resulting parallel strips are then bent out of the sheet plane in opposite directions, but the arc regions connecting the strips remain in the original sheet plane and are slidably supported in the grooves of a holder.
  • a resistance heating element which has a meandering heating conductor element consisting of a one-piece stamped sheet metal part.
  • This heating conductor is essentially made up of a corrugation - as a flat, rectangular element.
  • DE-A 1-2 703 293 describes a heating register with a housing in which a flat strip made of metallic resistance material is accommodated.
  • the flat strip has incisions which are made alternately from the opposite longitudinal edges in the opposite direction.
  • the metal strip is then pulled apart like an accordion.
  • the strip is bent in a ring.
  • the invention is therefore based on the object, starting from the prior art described at the outset, to provide a resistance heating element which, while being easy to manufacture, offers the fluid a very large surface area to be flushed per unit space.
  • the heating conductor also runs in a meandering manner in a transverse plane perpendicular to the longitudinal plane in such a way that at least two meandering segments connected to one another are arranged one behind the other.
  • the invention preferably relates to a small-sized resistance heating element.
  • the element shown in FIGS. 2 and 3 has a width of 20 mm, a height of 40 mm and a length of 50 mm.
  • the large length in turn causes large changes in length in the event of temperature changes which have to be absorbed without the fixed mounting of the metal element suffering as a result.
  • the resistance heating element 1 essentially consists of two bearing plates 2 and 3, which are arranged at a vertical distance from one another and preferably consist of plastic. For the sake of simplicity, reference will now be made to the upper bearing plate 2 and the lower bearing plate 3 with reference to FIGS. 2 to 5.
  • the one-piece resistance metal element is arranged between the bearing plates.
  • the resistance metal element essentially consists of a one-piece sheet metal stamping strip 4 which forms meandering stamped segments arranged one behind the other, the segments arranged one behind the other also being curved in a meandering manner.
  • a particularly advantageous spatial shape of the sheet metal stamping strip 4 for the purposes of the invention results from a circuit board 5, which is shown in plan view in FIG. 1.
  • the board consists of a one-piece sheet metal strip, for example a width of 2 mm and a thickness of 0.3 mm.
  • the spatial shape of the board is u. a. optimized with regard to the punched sheet metal waste.
  • the three-dimensional shape of the circuit board 5 is mirror-symmetrical to the longitudinal axis 10 and has at least one contact segment 6 and one loop segment 7.
  • the segments 6 and 7 are with Exception of an arc 7a formed mirror-symmetrically to a transverse axis 12. Between the segments 6 and 7 there can alternately be further extension segments 11 and 11 a, the segments 11 having the same shape in terms of space as the segment and the segments 11, with the exception of the arch 7 a, being the same as the segment 7.
  • Fig. 1 only a transverse axis 12 is drawn in, so as not to disturb the clarity. Nevertheless, the segments 11, 11a or 6 and 7 are mirror images of a transverse axis 12.
  • the contact segment 6 or an extension segment 11a consists of two current paths 6a and 6b punched out in a meandering pattern, which are arranged at a distance from one another in each case in a plane, the paths 6a and 6b having the same spatial shape in mirror symmetry with respect to the axis 10.
  • Each path 6a, 6b has a strip 8 extending next to the axis 10 and parallel to it in the direction of the loop segment 7, which opens into an arc 8a directed away from the axis 10, to which a returning strip runs parallel to the strip 8 8b, which in turn opens into a second bend 8c directed away from the axis 10, from which a strip 8d running parallel to the axis 10 leads to the loop segment 7 or to an extension segment 11.
  • the arches 8a and 8c are preferably designed as 180 ° arcs (semicircular arches), so that when viewed from above, an ideal punched out meandering shape results.
  • meandering current paths can be integrally connected to the side.
  • flatter arches 8a and / or 8c can be selected so that the strips 8 and 8b and / or 8b and 8c run divergingly.
  • the current path 6a has the same spatial shape as the current path 6b, which is why the same reference numerals have been used.
  • the loop segment 7 or an extension segment 11 also consists of two meandering current paths 13f and 13g, which are spaced apart in one plane next to the axis 10, the paths 13f and 13g having the same spatial shape symmetrically to the axis 10.
  • Each path 13f, 13g has a strip 13e which is coaxial with the strip 8d, i. H. the strip 8d merges in one piece in the region of an axis 12 into the strip 13e.
  • At the end of the strip 13e there is an arc 13a directed towards the longitudinal axis 10, which ends in a strip 13b running parallel to the strip 13e.
  • the strip 13b merges at the end opposite the curve 13a into a curve 13c directed towards the longitudinal axis 10, which is followed by a straight strip 13d running parallel to the strips 13e and 13b.
  • the path 13g merges into the path 13f, so that there is an integral, meandering punched-out electrical conductor from a stamped sheet metal strip, which is composed of the successive paths 6b, 13g, 13f and 6a, which are connected to each other with the bow 7a. If a power source is placed on the contact strips 8, the sheet metal strip can heat up as a resistance element.
  • arches 13a and 13c of the paths 13g and 13f are shown as 180 ° arcs, so that when viewed from above, an ideal punched out meandering shape also results.
  • meandering current paths can be integrally connected to the side.
  • flatter arches 13a and / or 13c can be selected so that the strips 13d and 13b as well as 13b and 13e run divergingly.
  • the contact strip 8 of the path 6b is preferably shorter than the contact strip of the path 6a.
  • Fig. 1 an expedient shape can be seen, in which the contact strip marked with the reference number 9 of the path 6a longer and in the top view in a Z-shape bent into the plane of the contact strip 8 of the path 6b such that the end of the contact strip 9 coaxial with Contact strip 8 of path 6b comes to rest.
  • extension segments 11, 11 correspond, as already mentioned, in terms of space to the segments 6 or 7. Accordingly, the same reference numerals are drawn in FIG. 1.
  • the segments are each bent over a transverse axis 12 or in the transverse axis region, such that an arc 14 leading downwards is followed by an upward arc 15, so that viewed in the direction of flow (FIG. 2), a resistance metal element bent in a meandering shape 4 results.
  • the arches 14 and 15 do not have to be round, but can also be angular, as shown in FIG. 2, and have a straight web 16. This shape is expedient for fastening the resistance metal element 4 in the bearing plates 2 and 3. It is important that the arches 14 and 15 create a sufficient distance or space 17 between adjacent segments 6 and 7 or 11 and 11 a or 6 and 11 and 11a and 7.
  • the intermediate space 17 advantageously allows the strips 8b, 8d and 8 after the arch regions 8c and 8a or the strips 13e, 13d and 13b after the arch regions 13a and 13c to be spread apart, as can be seen in FIG. 2, so that between the strips 8d and 8b and 8b and 8 or 13e and 13d and 13b and 13d a gap 18 is formed. This spreading leads to the fact that a large number of strips can be flowed against directly by the fluid flow, where in which the adjacent strips are laterally offset one behind the other in the flow direction. In this respect, an optimal heat absorption is brought about by the fluid.
  • the sheet metal stamping strip 4 which is punched out in a meandering shape and bent perpendicularly to the punched out meandering shape, is inserted with pins 25 in the bearing plates 2 and 3, the bearing plates 2 and 3 being kept at a distance by a web 19, 20.
  • the webs 19, 20 are preferably formed in one piece on the bearing plate 2, each engage with a corresponding opening 21 in the bearing plate 3 with their latching arms 31 spaced apart by a U-shaped recess 30 (FIG. 5) and snap behind with their latching lugs 22 an edge of the respective opening 21, the depth of the recess 30 being dimensioned such that the bottom of the U-shaped recess 30 sits on the bottom of the bearing plate 3, which results in the spacing.
  • the web 20 has recesses 23, 24 which are arranged vertically one above the other and which extend from the outward, ie. H. contact ends 8 and 9 bent towards the web 20 are penetrated (FIG. 2), so that easily accessible connections for a power source are created.
  • bearing pins 25 in the area of the arches 14 and 15, preferably in the web 16 are each connected to a side edge which is bent at right and upward angles, a slot 26 (FIG 3, 5) reach through in the bearing plate 2, 3 in a form-fitting manner, preferably with a press fit, and are bent over in the free end region approximately in the manner of a rivet, so that they cannot easily slide out of the slot 26.
  • the journals 25 are shaped so that they sit immovably in the slot 26.
  • the journals each have a step 25a on the two longitudinal edges, which step on the bottom of the bearing plate 2 or 3, since the slot 26 is made narrower than the width of a bearing journal 25 in the area of the steps 25a , so that only the area of a pin 25 protruding beyond the steps 25a passes through the slot 26.
  • This type of fastening should expediently create a distance between the arches 14 and 15 and 13a, 13c and 8a, 8c from the bottom of an adjacent bearing plate 2, 3, so that the segments 6, 7 and 11, 11a face the bottom of the bearing plates 2 , 3 can expand unhindered in the event of thermal expansion of the segments.
  • the fastening pins 25 are located in the bending areas 14, 15, in which the changes in length during temperature changes are practically negligible. Rather, the temperature-related changes in length are effective in the curved areas 13a, 13c and 8a, 8c, in that the segments can approach the bearing plates in these areas.
  • sliding pegs 27 (FIG. 3) protruding upwards or downwards in the material plane of the paths are connected in the arch regions mentioned, pass through the correspondingly corresponding slots 28 in the bottom of the plates 2, 3 and can slide freely in these slots 28 in the event of thermal expansion or shrinkage of the segments.
  • the bearing plates 2, 3 have frame-like webs 29 pointing outwards.
  • the new resistance heating element ensures a much larger surface in a small space compared to the proposal described, so that better heat emission can also be achieved.
  • the creation of the special spatial shape described makes it possible to form a resistance heating element which provides a meandering shape both in the direction of flow and perpendicular to it.
  • circuit board It is particularly advantageous for the manufacture of the circuit board to provide a connecting web between the arches 13a and 8a or 8a and 13c, which is produced to form a sliding pin 27 by an S-shaped or Z-shaped separating cut without loss of material.

Landscapes

  • Resistance Heating (AREA)
EP84108800A 1983-08-03 1984-07-25 Widerstandsheizelement Expired EP0135704B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3328078 1983-08-03
DE19833328078 DE3328078A1 (de) 1983-08-03 1983-08-03 Widerstandsheizelement

Publications (2)

Publication Number Publication Date
EP0135704A1 EP0135704A1 (de) 1985-04-03
EP0135704B1 true EP0135704B1 (de) 1988-11-09

Family

ID=6205705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108800A Expired EP0135704B1 (de) 1983-08-03 1984-07-25 Widerstandsheizelement

Country Status (4)

Country Link
US (1) US4553126A (ja)
EP (1) EP0135704B1 (ja)
JP (1) JPS6059690A (ja)
DE (2) DE3328078A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605611A1 (de) * 1986-02-21 1987-08-27 Braun Ag Verfahren zum herstellen eines heizkoerpers
EP0355210A1 (en) * 1988-08-26 1990-02-28 Koninklijke Philips Electronics N.V. Heating element
US5281944A (en) * 1991-04-25 1994-01-25 Mosebach Manufacturing Company Slide-in resistor grid
DE4121075A1 (de) * 1991-06-26 1993-01-14 Pierburg Gmbh Heizelementanordnung in einem luftansaugkanalsystem einer brennkraftmaschine
US5304978A (en) * 1992-08-10 1994-04-19 Mosebach Manufacturing Company Resistor grid assembly having "U" bend resistor elements
GB2323479A (en) * 1997-03-19 1998-09-23 Eaton Ltd Mounting resistor elements
DE29706870U1 (de) * 1997-04-16 1997-06-05 Behr Gmbh & Co, 70469 Stuttgart Elektrische Heizeinrichtung, insbesondere für ein Kraftfahrzeug
DE10048424A1 (de) * 2000-09-29 2002-04-18 Bsh Bosch Siemens Hausgeraete Heizelement und Verfahren zur Herstellung eines Heizelements
DE20108585U1 (de) * 2001-05-21 2002-10-02 Rubitherm Gmbh Elektrische Fußbodenheizung und Temperatursicherungsleiter
FR3015351B1 (fr) * 2013-12-23 2016-02-05 Michelin & Cie Enveloppe de pneumatique comprenant une carcasse, une bande de roulement et une couche de chauffage
WO2018197504A1 (en) * 2017-04-25 2018-11-01 Yazaki Europe Limited Power resistor
DE102020111987B4 (de) * 2020-05-04 2024-06-27 Kraftanlagen Energies & Services Se Heizeinrichtung

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1233183A (en) * 1916-06-05 1917-07-10 Gen Electric Electrical heating unit and method of making the same.
US2162030A (en) * 1930-04-21 1939-06-13 Capstan Glass Co Heating device for glass lehrs and the like
US1923644A (en) * 1932-01-11 1933-08-22 Pittsburgh Res Corp Electric heating furnace
DE650676C (de) * 1934-08-31 1937-09-29 Bbc Brown Boveri & Cie Bandheizkoerper fuer elektrische Widerstandsoefen
US2736786A (en) * 1953-11-12 1956-02-28 Bois Robert E Du Resistor structure
US2812410A (en) * 1955-05-16 1957-11-05 Robert E Dubois Resistor structure
US2858402A (en) * 1956-04-27 1958-10-28 Euclid Electric & Mfg Company Forced ventilated resistor stack
GB1132965A (en) * 1964-12-01 1968-11-06 Eisler Paul Improvements in the manufacture of patterns of slits in a web
US3673387A (en) * 1971-02-22 1972-06-27 Emerson Electric Co Electric heaters
AT354579B (de) * 1971-11-03 1979-01-10 Lueder Holger Dr Einrichtung zur elektrischen grossflaechen- heizung und verfahren zu ihrer herstellung
IN139058B (ja) * 1974-06-21 1976-05-01 Mosebach Mfg Co
US4051452A (en) * 1975-08-18 1977-09-27 Cutler-Hammer, Inc. Annular resistor
DE2625087A1 (de) * 1976-06-04 1977-12-15 Fritz Ing Grad Kraehmer Verschliesseinrichtung fuer kuenstliche darmausgaenge
CH613329A5 (en) * 1977-01-05 1979-09-14 Petz Elektro Waerme Techn Resistance heating element for a heating device
US4100526A (en) * 1977-02-24 1978-07-11 Mosebach Manufacturing Company Grid resistor
US4146868A (en) * 1978-02-28 1979-03-27 Mosebach Manufacturing Company Resistance unit structure
FR2471721A1 (fr) * 1979-12-11 1981-06-19 Seb Sa Element resistant chauffant decoupe pour radiateur electrique domestique, procede de fabrication et radiateur s'y rapportant
US4316172A (en) * 1980-06-25 1982-02-16 Eaton Corporation Resistor such as for dynamic braking of electric motors
US4477715A (en) * 1982-07-19 1984-10-16 Technar Incorporated PTC thermistor controlled electric diesel fuel heater

Also Published As

Publication number Publication date
DE8322435U1 (de) 1985-05-30
DE3328078C2 (ja) 1989-02-16
JPS6059690A (ja) 1985-04-06
EP0135704A1 (de) 1985-04-03
US4553126A (en) 1985-11-12
DE3328078A1 (de) 1985-02-21

Similar Documents

Publication Publication Date Title
DE69434153T2 (de) Elektrischer Verbinder für elektronische Speicherkarte
EP1061776B1 (de) Heizvorrichtung zur Lufterwärmung
EP0459144B1 (de) Schneid-Klemm-Kontakt
EP0135704B1 (de) Widerstandsheizelement
EP2330865B1 (de) Elektrische Heizvorrichtung
EP1432287A1 (de) Elektrische Heizvorrichtung mit Gehäuse
WO2018041774A2 (de) Leiteranschlussklemme
DE1765978B1 (de) Schaltungsblock zum elektrischen verbinden mittels steck verbindungen von elektrischen schaltungselementen
EP0086316B1 (de) Steckkontaktvorrichtung zur Herstellung einer elektrischen Verbindung zwischen zwei Schienen
EP0226952B1 (de) Kontaktfeder
DE10212511B4 (de) Querverbinder für Reihenklemmen
EP1575076B1 (de) Sicherungsträger für Flachsicherungen
DE102017112548B4 (de) Elektrische kontakteinrichtung und metallische aufnahme für eine elektrische kontakteinrichtung
DE4413880C1 (de) Pontentialverteiler, insbesondere für Sicherungsdosen von Kraftfahrzeugen
DE2524287A1 (de) Elektrischer schalter
WO2002027740A1 (de) Bewegbarer kontaktträger für einen niederspannungs-leistungsschalter mit einem abstandhalter für die kontakthebel
AT390695B (de) T-foermiger elektrischer verbinder
EP1191385A2 (de) Flüssigkristall-Anzeige
DE102004053577B4 (de) Strombrücke
CH684721A5 (de) Modulare Stromschienenvorrichtung.
DE19851956C2 (de) Schneid-Klemmkontakt
AT378628B (de) Schraubenlose verbindungsklemme
DE2916213A1 (de) Verbindungskontakt fuer fernmeldeanlagen
DE4207091C1 (en) Electrical multi-contact connector plug unit - has pressed metal contacts held in insulated housed by interlock elements providing accurate positioning
DE60125633T2 (de) Steckverbinderelement und damit versehener Steckverbinder

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19850225

ITCL It: translation for ep claims filed

Representative=s name: ING. A. GIAMBROCONO & C. S.R.L.

EL Fr: translation of claims filed
TCNL Nl: translation of patent claims filed
17Q First examination report despatched

Effective date: 19870126

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH FR GB IT LI NL SE

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C. S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19900607

Year of fee payment: 7

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19910731

Ref country code: CH

Effective date: 19910731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920727

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920728

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920731

Year of fee payment: 9

Ref country code: FR

Payment date: 19920731

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84108800.8

Effective date: 19940210