EP0038414A1 - Elément chauffant électrique en fil métallique - Google Patents

Elément chauffant électrique en fil métallique Download PDF

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Publication number
EP0038414A1
EP0038414A1 EP81101595A EP81101595A EP0038414A1 EP 0038414 A1 EP0038414 A1 EP 0038414A1 EP 81101595 A EP81101595 A EP 81101595A EP 81101595 A EP81101595 A EP 81101595A EP 0038414 A1 EP0038414 A1 EP 0038414A1
Authority
EP
European Patent Office
Prior art keywords
heating conductor
heating
heating element
edges
element according
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
EP81101595A
Other languages
German (de)
English (en)
Other versions
EP0038414B1 (fr
Inventor
Gottfried Voigt
Gerhard Hickel
Klaus Peter Lange
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Publication of EP0038414A1 publication Critical patent/EP0038414A1/fr
Application granted granted Critical
Publication of EP0038414B1 publication Critical patent/EP0038414B1/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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base

Definitions

  • the invention relates to an electrical wire heating element for air heating with a heating conductor winding receiving the heating conductor winding, which consists of cross-shaped or star-shaped carrier plates made of insulating material, the heating conductor being meandering, zigzag-shaped or in the manner of a wave band.
  • Radiators with a heating conductor carrier which is formed from cross-shaped or star-shaped carrier plates, the individual carrier plates having an approximately rectangular shape (DAS 1 540 731) have the disadvantage that the heating conductors wrapped around the heating conductor carrier are all arranged one behind the other, the the next heating conductor winding following the front heating conductor winding is covered by the front heating conductor and the air conveyed by the blower flowing along the carrier plates only flows sufficiently around the front heating conductor winding, but does not sufficiently flush the next following heating conductor winding so that this heating conductor winding tends to overheat.
  • DAS 1 540 731 Radiators with a heating conductor carrier, which is formed from cross-shaped or star-shaped carrier plates, the individual carrier plates having an approximately rectangular shape
  • the resistance heating element from strips of a flat metal grid (DOS 25 33 934, Fig. 9), the grid strips being concentric to the wall of the circular flow channel or stretched spirally.
  • DOS 25 33 934, Fig. 9 flat metal grid
  • Such a heating. Element has the disadvantage that it has an extraordinarily large diameter with the smallest overall length and is therefore particularly unsuitable for hand hair dryers.
  • the individual windings of the heating conductor arranged one behind the other in the air flow be of different sizes (US Pat. No. 1,077,635, FIG. 12) and arranged so that they are held by two plate-shaped parallel heating conductor carriers, the heating conductor carrier plates having rows of holes, through which the heating conductors are led through.
  • This arrangement has the disadvantage that it is difficult to manufacture and is only suitable for non-coiled, i.e. smooth drawn heating conductor is suitable.
  • the present invention has for its object to provide a wire heating element of the type described, which is thermally highly resilient, which has a substantially cylindrical, elongated shape, which is easy to manufacture and which is free from the disadvantages of the known wire heating elements.
  • the plate-shaped heating conductor carriers which are firmly connected to one another in mutually intersecting planes are arranged in such a way that one heating conductor carrier is alternately arranged facing the blower unit with its narrow edge and the plate-shaped heating conductor carrier arranged in the next crossing plane is arranged with its longer edge facing the blower unit.
  • the carrier plates of the heating conductor carrier are advantageously designed as uneven-legged trapezoids, one of the legs of the square carrier plates being arranged at right angles to the two mutually parallel edges.
  • At least four trapezoidal carrier plates are arranged in intersecting planes, one leg of each carrier plate being arranged in parallel with one leg of the next carrier plate.
  • the radially outer one is preferably in each case Legs curved, for example circular arc shaped.
  • the blower-side edges of the carrier plates arranged in a star shape in different crossing planes are of different lengths.
  • all trapezoidal support plates have the same dimensions, but one support plate with its narrow edge is arranged facing the blower, while the adjacent support plate is provided with its longer edge facing the blower.
  • the heating conductor carrier is wrapped with a corrugated or meandering heating conductor, the number of corrugations or zigzag-shaped bends of the respective heating conductor section provided between the radially outer legs of two heating circuit boards in each case being the same.
  • the number of two between the radially outer legs of two neighboring ones Heating circuit boards provided corrugations of the heating conductor designed differently.
  • the edges of the individual carrier plates facing the blower are viewed in the axial direction (in the direction of flow), offset by a small amount from one another.
  • the electrical wire heating element according to Figure 1 consists of star-shaped plate-shaped heating conductor carriers, all four plates 1 to 4 being trapezoidal and of the same size. All plates are joined together to form the heating conductor carrier in such a way that their shorter edges 5 to 8 form one end of the wire heating element and their longer edges 9 to 12 form the other end of the wire heating element.
  • the four plates 1 to 4 are made of insulating material and glued or welded together at 13.
  • the heating conductor 14 is wound around the heating conductor carrier, the heating conductor 14 having approximately the shape of the section of a heating winding shown in FIG. is curled.
  • the heating conductor support plates are arranged in the wire heating element according to FIG. 1 in such a way that their short edges together form one end and their long edges form the other end of the wire heating element
  • the arrangement of the plates 15 to 18 is made in the embodiment according to FIG. that the plate pair 16, 18 turn their longer edges 19, 20 towards the air flow L, while the plates 15, 17 turn their short edges 21, 22 towards the air flow L.
  • Such an embodiment has the advantage that the heating conductor 23 wound on the plates 15 to 18 has a favorable flow of air around it, ie the individual sections lie not in the slipstream of the heating conductor section in front of it.
  • the embodiment according to FIG. 3 differs from that according to FIG. 2 in that the individual plates 25 to 28 are not adhesively bonded or riveted to one another as in 24, but rather are evenly distributed on the circumferential surface 29 of a tube piece 30.
  • the distance e between the edge 24 and the heating wire support 89 of the outer edge 33 of the carrier plate 17 is different in a heating conductor carrier configuration, as shown in FIG than the distance e 'between the heating wire support 90 of the opposite carrier plate and the fastening edge 24.
  • FIGS. 4 and 5 show a wire radiator in which the plate pairs 38, 39 and 40, 41 are of different designs. While the plates 40, 51 have a clear trapezoidal shape, the plates 38 and 39 are more rectangular, ie the front edges 42, 43 correspond approximately to the rear edges 44, 45. This embodiment is particularly suitable for a nozzle or for an air duct 46, one end of which has "47 circular cross-section and the other end 48 is oval.
  • edges 49, 50 and 51, .52 can be slightly curved, i.e. that the plate pairs 38, 39 and 40, 41 are rectangles or trapezoids, the radially outer legs 60, 61 are arcuate.
  • FIG. 6 shows a section of a heating wire shaped like a corrugated strip, in which the corrugated strip 31 on the section A (FIG. 3) has six turns on the one hand, while seven turns are provided in the wire piece 31 ′ behind it.
  • a corrugated tape allows the maximum possible use of the air flow, since the wire corrugations are not in the slipstream from each other; nevertheless, the sections are shaped such that both the section 53 and the section 31 'located at the front can be suspended on the radially outer edges 56, 57 of the plate-shaped heating conductor supports without the sections 31 having to be elongated or compressed.

Landscapes

  • Resistance Heating (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
EP81101595A 1980-04-18 1981-03-06 Elément chauffant électrique en fil métallique Expired EP0038414B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803014935 DE3014935A1 (de) 1980-04-18 1980-04-18 Elektrisches drahtheizelement
DE3014935 1980-04-18

Publications (2)

Publication Number Publication Date
EP0038414A1 true EP0038414A1 (fr) 1981-10-28
EP0038414B1 EP0038414B1 (fr) 1985-01-16

Family

ID=6100379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101595A Expired EP0038414B1 (fr) 1980-04-18 1981-03-06 Elément chauffant électrique en fil métallique

Country Status (5)

Country Link
EP (1) EP0038414B1 (fr)
DE (2) DE3014935A1 (fr)
ES (1) ES266004Y (fr)
HK (1) HK64889A (fr)
IE (1) IE51043B1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104344A1 (fr) * 1982-08-31 1984-04-04 Braun Aktiengesellschaft Elément chauffant électrique en fil métallique et son procédé de fabrication
EP0293997A1 (fr) * 1987-06-04 1988-12-07 GAMMA S.p.A. Résistances électriques construites à partir de fil résistant ondulé pour ventilateurs à flux axial
EP0338604A1 (fr) * 1988-04-20 1989-10-25 GAMMA S.p.A. Résistance électrique conique haute performance pour sèche cheveux et appareillages similaires
EP1884962A1 (fr) * 2006-08-04 2008-02-06 Gamma S.P.A. Résistance électrique pour un dispositif de chauffage
IT201900006645A1 (it) * 2019-05-08 2020-11-08 Gamma Spa Dispositivo di riscaldamento, dispositivo di ventilazione ed asciugacapelli
WO2020225646A1 (fr) * 2019-05-03 2020-11-12 Gamma S.P.A. Générateur d'écoulement d'air chaud, de préférence sèche-cheveux, sèche-mains, appareil de chauffage électrique, ou décapant de peinture

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8809561U1 (de) * 1988-07-27 1988-12-08 Braun Ag, 6000 Frankfurt Elektroheizkörper
DE20217309U1 (de) 2002-11-09 2003-01-30 Eichenauer Heizelemente Gmbh Heizkörper für gasförmige Medien
CN109480447B (zh) * 2019-01-04 2024-04-02 深圳市奋达科技股份有限公司 一种风筒发热架及风筒发热架的装配方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1467667A (en) * 1921-04-18 1923-09-11 Florence King Allen Electric heater
US1490088A (en) * 1921-07-14 1924-04-15 Airdry Corp Air heater
GB713712A (en) * 1952-07-03 1954-08-18 Gen Electric Improvements in or relating to electric heating elements and apparatus incorporatingsuch elements
DE2038819A1 (de) * 1969-08-05 1971-04-08 Belling & Co Ltd Elektrische Klima- und Beleuchtungsvorrichtung
DE2727940A1 (de) * 1976-06-21 1977-12-29 Sperry Rand Corp Elektrischer heissluftspender, insbesondere zur haarpflege
DE2830533A1 (de) * 1978-07-12 1980-01-31 Eichenauer Fa Fritz Elektrischer heizkoerper fuer fluide medien
FR2431234A1 (fr) * 1978-07-12 1980-02-08 Eichenauer Fritz Element chauffant electrique pour milieux fluides

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1467667A (en) * 1921-04-18 1923-09-11 Florence King Allen Electric heater
US1490088A (en) * 1921-07-14 1924-04-15 Airdry Corp Air heater
GB713712A (en) * 1952-07-03 1954-08-18 Gen Electric Improvements in or relating to electric heating elements and apparatus incorporatingsuch elements
DE2038819A1 (de) * 1969-08-05 1971-04-08 Belling & Co Ltd Elektrische Klima- und Beleuchtungsvorrichtung
FR2056541A5 (fr) * 1969-08-05 1971-05-14 Belling Et Cy Ltd
DE2727940A1 (de) * 1976-06-21 1977-12-29 Sperry Rand Corp Elektrischer heissluftspender, insbesondere zur haarpflege
DE2830533A1 (de) * 1978-07-12 1980-01-31 Eichenauer Fa Fritz Elektrischer heizkoerper fuer fluide medien
FR2431234A1 (fr) * 1978-07-12 1980-02-08 Eichenauer Fritz Element chauffant electrique pour milieux fluides

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104344A1 (fr) * 1982-08-31 1984-04-04 Braun Aktiengesellschaft Elément chauffant électrique en fil métallique et son procédé de fabrication
EP0293997A1 (fr) * 1987-06-04 1988-12-07 GAMMA S.p.A. Résistances électriques construites à partir de fil résistant ondulé pour ventilateurs à flux axial
EP0338604A1 (fr) * 1988-04-20 1989-10-25 GAMMA S.p.A. Résistance électrique conique haute performance pour sèche cheveux et appareillages similaires
EP1884962A1 (fr) * 2006-08-04 2008-02-06 Gamma S.P.A. Résistance électrique pour un dispositif de chauffage
WO2020225646A1 (fr) * 2019-05-03 2020-11-12 Gamma S.P.A. Générateur d'écoulement d'air chaud, de préférence sèche-cheveux, sèche-mains, appareil de chauffage électrique, ou décapant de peinture
IT201900006645A1 (it) * 2019-05-08 2020-11-08 Gamma Spa Dispositivo di riscaldamento, dispositivo di ventilazione ed asciugacapelli
WO2020225652A1 (fr) * 2019-05-08 2020-11-12 Gamma S.P.A. Dispositif de chauffage, dispositif de ventilateur et sèche-cheveux

Also Published As

Publication number Publication date
HK64889A (en) 1989-08-18
IE810890L (en) 1981-10-18
DE3014935A1 (de) 1981-10-22
ES266004U (es) 1983-02-16
IE51043B1 (en) 1986-09-17
DE3168230D1 (en) 1985-02-28
ES266004Y (es) 1983-08-01
EP0038414B1 (fr) 1985-01-16

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