EP0135704A1 - Elément de chauffage électrique - Google Patents

Elément de chauffage électrique Download PDF

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Publication number
EP0135704A1
EP0135704A1 EP84108800A EP84108800A EP0135704A1 EP 0135704 A1 EP0135704 A1 EP 0135704A1 EP 84108800 A EP84108800 A EP 84108800A EP 84108800 A EP84108800 A EP 84108800A EP 0135704 A1 EP0135704 A1 EP 0135704A1
Authority
EP
European Patent Office
Prior art keywords
heating element
resistance heating
element according
strip
segments
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
Application number
EP84108800A
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German (de)
English (en)
Other versions
EP0135704B1 (fr
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/fr
Application granted granted Critical
Publication of EP0135704B1 publication Critical patent/EP0135704B1/fr
Expired legal-status Critical Current

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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 [2D] plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor being self-supporting

Definitions

  • the invention relates to a resistance heating element for e.g. an intake air line between the carburetor and engine of an internal combustion engine, which is flushed with a fluid.
  • the popular resistance heating elements consist of a heating coil made of a resistance metal wire, which has a round cross section.
  • a resistance heating element has recently been proposed, which in each case has a plurality of narrow fastening rods arranged next to one another in an upper and a lower level, a meandering resistance metal wire being guided between the levels, in such a way that the wire runs in a meandering manner in the longitudinal extent of the fastening rods from the upper to the lower level, the wire at the end of a bar being transferred to the adjacent bar, from there running in a meandering shape to the other end of the adjacent bar and in turn being guided to the next adjacent bar.
  • the result is not just a meandering wire guidance between the levels, but also a meandering transition from one fastening rod to neighboring fastening rods.
  • the fastening of the resistance wire to the fastening rods is guaranteed with special means. These consist of a loop that encompasses the wire in the straight area near a meandering arch; a pin is attached to the sling, which is fixed in a fastening rod. To be able to absorb the variations in length occurring during temperature changes so that they do not cause destruction of the resistive heating element, is provided in this proposed resistance that each next-loop loose such wraps around the resistance wire, the wire gle in the loop iten..kann '.
  • a disadvantage of this known resistance heating element is that a considerable effort has to be made to absorb the changes in length.
  • the known type of fastening is not such that the fluid flows or vibrations have no influence on the wire arrangement. Movements or vibrations can be forced on the wire arches, which can lead to destruction.
  • the object of the invention is to provide a resistance heating element that is easy to manufacture, that offers a very large surface area that can be flushed around the fluid per unit space, and that can be attached very easily in bearing elements, heat-related changes in length being able to be absorbed without the storage being adversely affected .
  • the invention preferably relates to a small-sized resistor 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, the following is used with reference to FIGS. 2 to 5 of the upper bearing plate 2 and of the lower bearing plate 3.
  • the one-piece resistance metal element 4 is arranged between the bearing plates.
  • the resistance metal element 4 consists of a one-piece sheet metal stamping strip, which preferably forms meandering stamped segments arranged one behind the other. It is advantageous if the segments arranged one behind the other are also curved in a meandering shape.
  • a particularly advantageous spatial shape of the resistance metal element 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 among others 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 on loop segment 7. With the exception of an arc 7a, the segments 6 and 7 are mirror-symmetrical to a transverse axis 12. Between the segments 6 and 7 there can alternately be further extension segments 11 and 11a, the segments 11a having the same shape as the segment 6 and the segments 11, with the exception of the arch 7a, the segment 7. In 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 meandering current paths 6a and 6b which are spaced apart in one plane next to the axis 10, the paths 6a and 6b having the same spatial shape symmetrically 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 path runs parallel to the strip 8
  • Stripe 8b connects, which in turn opens into a second arc 8c directed away from axis 10, from which a strip 8d running parallel to axis 10 leads to 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. It is within the scope of the invention to connect further, in particular identically formed, meandering current paths integrally to the side. It is also within the scope of the invention to choose flatter arches 8a and / or 8c so that the strips 8 and 8b and / or 8b and 8c run divergingly.
  • the loop 6a has the same spatial shape as the loop 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, ie the strip 8d runs in one piece in the region of an axis 12 in strips 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 arch 13a into an arch 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 stamped-out electrical conductor made of 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 like the arches 8a and 8c of the paths 6a and 6b, are shown as 180 ° arcs, so that when viewed from above, an ideal punched out meandering shape also results. In this case, too, it is within the scope of the invention to connect further, in particular identically designed, meandering current paths to the side in one piece. It is also within the scope of the invention to choose flatter arches 13a and / or 13c so that the strips 13d and 13b and 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 form can be seen, in which the contact strip of the path 6a marked with the reference number 9 is longer and in the top view Z-shaped in such a way 10 that the plane of the contact strip 8 of the path 6b is bent such that the end of the contact strip 9 coaxial with the contact strip 8 of path 6b comes to rest.
  • extension segments 11, 11a correspond 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 around a transverse axis 12 or in the transverse axis region, such that an arc 14 leading downwards is followed by an arc 15 leading upwards, so that viewed in the flow direction (FIG. 2) a meandering curve Resistance element 4 results.
  • the arches 14 and 15 do not have to be round, but can also be angular, as shown, 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 arches 14 and 15 create a sufficient distance or space 17 between adjacent segments 6 and 7 or 11 and 11a or 6 and 11 and 11a and 7.
  • the space 17 advantageously allows the strips 8b, 8d and 8 after the arc regions 8c and 8a or the strips 13e, 13d and 13b after the arc 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 stream, the adjacent strips being arranged behind one another diagonally offset in the flow direction. In this respect, an optimal heat absorption is brought about by the fluid.
  • the meandering punched and perpendicular to the punched out meandering shape curved resistance Metal element 4 is inserted with pins 25 in the bearing plates 2 and 3, the bearing plate: 2 and 3 being held 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 through their corresponding latching arms 31, which are spaced apart by an irregular recess 30, in the bearing plate 3 and snap with their latching lugs 22 behind an edge of the respective opening 21, the depth of the recess 30 is 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 arranged vertically one above the other, which are penetrated by the contact ends 8 and 9 bent outwards, ie towards the web 20, so that easily accessible connections for a power source are created.
  • bearing pins 25 in the area of the arches 14 and 15 are preferably connected in the web 16 to one side edge, which are bent at right angles upwards and downwards, a slot 26 in the Grip plate 2, 3 in a form-fitting manner, preferably with a press fit, and are bent in the free end region approximately in the manner of a rivet, so that they cannot easily slide out of slot 26.
  • the journals 25 are shaped so that they sit immovably in the slot 26.
  • the bearing journals have a step 27 on each of the two longitudinal edges, the steps 27 sit 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 region of the steps 27, so that only the area of a pin 25 protruding beyond the steps 27 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 can expand unhindered towards the bottoms of the bearing plates 2, 3 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 which project upwards or downwards and are aligned in the material plane of the paths are connected in said arched areas, reach 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. So far, it has not been possible to form a resistance element from strip-shaped sheet metal stampings, even though there were models made of round wire.
  • the Creation of the particular spatial shape described makes it possible to form a resistance heating element that 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 by an S- or Z-shaped separating cut without loss of material.

Landscapes

  • Resistance Heating (AREA)
EP84108800A 1983-08-03 1984-07-25 Elément de chauffage électrique Expired EP0135704B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6205705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108800A Expired EP0135704B1 (fr) 1983-08-03 1984-07-25 Elément de chauffage électrique

Country Status (4)

Country Link
US (1) US4553126A (fr)
EP (1) EP0135704B1 (fr)
JP (1) JPS6059690A (fr)
DE (2) DE8322435U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021224109A1 (fr) * 2020-05-04 2021-11-11 Kraftanlagen München Gmbh Dispositif de chauffage, système de chauffage, dispositif de stockage d'énergie thermique et système de stockage d'énergie thermique

Families Citing this family (11)

* 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 (fr) * 1988-08-26 1990-02-28 Koninklijke Philips Electronics N.V. Elément chauffant
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, 20457 Hamburg 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
JP7041171B2 (ja) * 2017-04-25 2022-03-23 ヤザキ・ヨーロッパ・リミテッド 電力抵抗器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE2703293A1 (de) * 1977-01-05 1978-07-06 Petz Elektro Waerme Techn Elektrisches heizregister
AT354579B (de) * 1971-11-03 1979-01-10 Lueder Holger Dr Einrichtung zur elektrischen grossflaechen- heizung und verfahren zu ihrer herstellung
EP0101560A2 (fr) * 1982-07-19 1984-02-29 Technar Incorporated Réchauffeur de carburant commandé par thermistance

Family Cites Families (14)

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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
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
IN139058B (fr) * 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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
AT354579B (de) * 1971-11-03 1979-01-10 Lueder Holger Dr Einrichtung zur elektrischen grossflaechen- heizung und verfahren zu ihrer herstellung
DE2703293A1 (de) * 1977-01-05 1978-07-06 Petz Elektro Waerme Techn Elektrisches heizregister
EP0101560A2 (fr) * 1982-07-19 1984-02-29 Technar Incorporated Réchauffeur de carburant commandé par thermistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021224109A1 (fr) * 2020-05-04 2021-11-11 Kraftanlagen München Gmbh Dispositif de chauffage, système de chauffage, dispositif de stockage d'énergie thermique et système de stockage d'énergie thermique
JP2023529789A (ja) * 2020-05-04 2023-07-12 クラフタンラーゲン ミュンヘン ゲーエムベーハー 加熱装置、加熱システム、蓄熱装置及び蓄熱システム

Also Published As

Publication number Publication date
US4553126A (en) 1985-11-12
DE3328078A1 (de) 1985-02-21
DE3328078C2 (fr) 1989-02-16
JPS6059690A (ja) 1985-04-06
EP0135704B1 (fr) 1988-11-09
DE8322435U1 (de) 1985-05-30

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