EP0245757B1 - Heizkörper - Google Patents

Heizkörper Download PDF

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Publication number
EP0245757B1
EP0245757B1 EP87106519A EP87106519A EP0245757B1 EP 0245757 B1 EP0245757 B1 EP 0245757B1 EP 87106519 A EP87106519 A EP 87106519A EP 87106519 A EP87106519 A EP 87106519A EP 0245757 B1 EP0245757 B1 EP 0245757B1
Authority
EP
European Patent Office
Prior art keywords
heating unit
legs
slot opening
heating
voltage taps
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
Application number
EP87106519A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0245757A1 (de
Inventor
Günther Seidel
Heinz Guhr
Robert Jung
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 EP0245757A1 publication Critical patent/EP0245757A1/de
Application granted granted Critical
Publication of EP0245757B1 publication Critical patent/EP0245757B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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 a radiator for a device, in particular personal needs, according to the preamble of the main claim.
  • a radiator for a device, in particular personal needs, according to the preamble of the main claim.
  • This radiator is already known from DE-A1 27 27 940.
  • This heater has a conductor strip attached to the plates of the support body. Two essentially inelastic legs of the conductor strip form a slot of essentially constant width. This slot in the conductor strip is aligned with a slot in the plate.
  • the heating coil is located in the slots and is electrically connected to the conductor strip via a rivet. The electrical connection between the heating coil and the conductor strip is therefore produced using an additional fastening element in a further operation after the winding process has ended.
  • the manufacture of such a radiator is therefore comparatively expensive and time-consuming and requires complicated tools.
  • GB-A 20 84 840 discloses a heater for an electric toaster, in which the heating coil is guided in grooves in the carrier plate and in which openings are provided in the carrier plate to even out the heat distribution. Voltage taps are not provided for this heater.
  • AT-B 162 348 shows a sectional radiator in which the heating coil is mounted in grooves for the greater part of its length with a view to the highest possible load capacity of the radiator.
  • the heating element is constructed in such a way that the ceramic heating conductor supports are arranged between ceramic rolling elements which are lined up on a flexible, heat-resistant core and which can roll against one another if the core is curved, and their shape is adapted with only little play, the rolling elements being designed in this way that, in conjunction with the heating conductor supports, they result in a torsion-proof arrangement of all parts with the greatest possible intervention.
  • This publication too deals only with the definition of the heating coil on the support body, but not with a special design of voltage taps.
  • the invention is based on the object of simplifying and arranging a voltage tap of a radiator with the features of the preamble of the main claim.
  • a radiator with the features of the main claim. Because the slot opening tapers towards the interior of the radiator and the two legs are designed to be resilient for the clamping reception of the heating coil, on the one hand an easily accessible voltage tap is obtained, in which, on the other hand, the electrical connection to the heating coil can be made without additional work steps or additional fastening material. Since the voltage taps are connected to the plates, the heating coil can thread into the tapering slot openings of the voltage taps during the winding process and is held in a clamped manner by the resilient legs without further measures.
  • the slot opening of the voltage tap lies in approximately the plane in which the V-shaped openings provided individually on the outer end edges of the support body for receiving the heating coil are also arranged.
  • the voltage taps or their legs are designed to be resilient so that they lie firmly against the surface of the heating coil.
  • the resilient design of the legs is obtained in an advantageous manner in that the slot opening widens again somewhat from its narrowest point, so that the legs are somewhat narrower in the area of the enlargement than the rest of the part.
  • a good clamping effect is also obtained by connecting an elongated slot to the V-shaped slot opening, which slot is formed from the opposite, mutually parallel edges of the legs. By bending the legs apart, the heating coils can be inserted into this elongated slot, so that good contact can be made between the legs and the coils.
  • the voltage taps are made from flat webs, for example from sheet metal strips, the surfaces of the individual legs being aligned in a V-shape with respect to one another, so that the rigidity of the legs can be improved in a simple manner. This prevents the legs from rotating out of their plane when the heating coil is inserted into the slot opening, and thereby insufficient contact between the legs and the heating coil.
  • the heating coil can be inserted into the slot openings of the voltage taps in a simple manner, it is advantageous that the opposite edges of the legs, which form the V-shaped slot opening, run on a radius of curvature, that is to say taper inward in an arc, and that the outside edges Ends of the legs are also rounded.
  • the radiator 2 denotes a radiator of a hair dryer, to which a fan motor, not shown in the drawing, is assigned.
  • the radiator 2 consists of two mutually perpendicular plates 4 and 6, which form a support body 8 for receiving a heating coil 12.
  • the plates 4 and 6 can be provided with longitudinal slots in the center, so that the plates can be easily inserted into one another.
  • the plates 4, 6 have numerous, closely arranged V-shaped recesses 10 on their outer end edges, all of which are together form a saw-like profile.
  • the cutouts 10 serve to receive the heating coil 12, which, as can be seen in FIG. 2, has a zigzag shape, so that the outer arches 14 of the heating coil 12 can be hung in the cutouts 10 of the supporting body 8.
  • the heating element 2 consists of a catchy heating coil 12.
  • a connection 20 is provided, which is connected via an electrical line 22 and a switch to a plug, not shown in the drawing, so that the radiator 2 is supplied with current when the switch is in the appropriate position can be.
  • the start and end connections 20 of the heater i.e. the connections 20 are made relatively large, so that no damage to the heating coil or to the connection occurs at the contact point of the connection with the heating coil 12 due to the high currents to be transmitted.
  • the ends of the connections 20 are provided with two small webs 41 which run in a U-shape with respect to one another and between which a small part of the heating coil 12 is accommodated. Squeezing the webs 41 together creates a flawless, large-area connection between the connection 20 and the heating coil 12, so that the contact point does not heat up too much due to the current density present and is thereby damaged.
  • voltage taps 30 are provided for the transmission of lower electrical powers.
  • the voltage taps 30 serve, for example, to supply power to a fan motor that is designed for a power consumption that is significantly lower than the power consumption of the radiator 2.
  • the power consumption of the fan motor can be, for example, between approximately 10 and approximately 100 watts.
  • the contacting surfaces of the heating coil 12 and the voltage tap 30 can be smaller at a maximum permissible current density than the contacting areas between the connections 20 or the end taps and the heating coil 12.
  • the voltage taps are each via an electrical line 24 with the fan motor connectable.
  • the voltage taps 30 for the fan motor are fixedly arranged on the surface of the plate 4 and are provided at the end with conically tapering slot openings 32, which are each formed from two opposing webs or legs 35 arranged in one plane.
  • the opposite edges 34 of the legs 35 have a curvature, taper inward in an arc shape, so that the heating coil 12 can be inserted into the slot opening 32 in a simple manner.
  • the radius of curvature is made substantially smaller in the region of the outer end of the leg 35, so that the leg receives a blunted tip 36.
  • the edges 34 are followed by two parallel edges 38, the spacing of which is considerably smaller than the spacing of the edges 34.
  • An extension 40 is connected to the two parallel edges 38 behind the narrowest point 39 of the slot opening, which is formed by an arc 42 or an inner edge is limited.
  • the width of the leg 35 is smaller than in the area of the edge 38. This results in a resilient arrangement of the two legs 35 so that they can be bent slightly apart when the heating coil 12 is inserted. After inserting the heating coil 12 into the slot opening 32, the edges 38 press against the surface of the heating coil 12, so that a perfect or sufficient contact between the surface of the heating coil 12 and the edges 38 and 34 of the leg 35 by pressing and / or cutting will be produced.
  • a bending or unscrewing of the two legs 35 from their plane is prevented by the fact that the two surfaces 44 are arranged in a V-shape with respect to one another and thereby form an obtuse angle ⁇ which is somewhat less than 180 °.
  • This measure increases the rigidity of the two legs 35 in a simple manner and prevents the two legs from tipping away when the heating coil 12 is inserted into the slot opening 32.
  • the stiffness of the legs can also be achieved by a different shape, for example by an undulating course of the legs.
  • the costs can be considerably reduced, since the heating element 12 can be wound onto the plates 4 and at the same time onto the voltage taps 30 in one operation.
  • the end tap or connection 20 and also the voltage tap 30 can be produced from a thin sheet in a simple manner, for example by stamping.
  • the slot opening 32 can also be formed at the same time by the punching process. It is also possible to align the two surfaces 44 at an angle to one another during the punching process.

Landscapes

  • Resistance Heating (AREA)
  • Cleaning And Drying Hair (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Stoves And Ranges (AREA)
EP87106519A 1986-05-15 1987-05-06 Heizkörper Expired - Lifetime EP0245757B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3616405 1986-05-15
DE19863616405 DE3616405A1 (de) 1986-05-15 1986-05-15 Heizkoerper

Publications (2)

Publication Number Publication Date
EP0245757A1 EP0245757A1 (de) 1987-11-19
EP0245757B1 true EP0245757B1 (de) 1991-10-16

Family

ID=6300910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106519A Expired - Lifetime EP0245757B1 (de) 1986-05-15 1987-05-06 Heizkörper

Country Status (5)

Country Link
EP (1) EP0245757B1 (enrdf_load_stackoverflow)
DE (2) DE3616405A1 (enrdf_load_stackoverflow)
ES (1) ES2025087B3 (enrdf_load_stackoverflow)
HK (1) HK92892A (enrdf_load_stackoverflow)
SG (1) SG91192G (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8701993U1 (de) * 1987-02-10 1987-04-16 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Heizkörper mit Abgriffteil
DE19634751A1 (de) * 1996-08-28 1998-03-05 Braun Ag Elektrisches Drahtheizelement
ITMI20112079A1 (it) * 2011-11-16 2013-05-17 Franco Losini Resistore per asciugacapelli e metodo per realizzare tale resistore

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2727940A1 (de) * 1976-06-21 1977-12-29 Sperry Rand Corp Elektrischer heissluftspender, insbesondere zur haarpflege

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1686059A (en) * 1925-04-24 1928-10-02 Westinghouse Electric & Mfg Co Electric heating unit
AT162348B (de) * 1946-08-16 1949-02-25 Rudolf Ing Fridrich Elektro-Gliederheizkörper
DE2458046A1 (de) * 1974-12-07 1976-06-10 Eichenauer Fa Fritz Heizkoerper fuer elektrische geraete mit einem geblaese
DE2644093A1 (de) * 1976-09-30 1978-04-06 Eichenauer Fa Fritz Heizkoerper mit zumindest einer isolierstoffplatte und einer um diese fortlaufend gewundenen wendel
DE2722213C2 (de) * 1977-05-17 1992-04-30 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrischer Heizkörper
DE2837316A1 (de) * 1978-08-26 1980-03-13 Braun Ag Haartrockner und verfahren zum herstellen eines heizkoerpers fuer diesen haartrockner
DE2940468C2 (de) * 1979-10-05 1984-05-17 Otto 8000 München Hübner Elektrischer Heizkörper für elektrische Haushaltsgeräte, insbesondere für Haartrockner
DE3003240A1 (de) * 1980-01-30 1981-08-06 Fa. Friedrich Würth, 7000 Stuttgart Heizkoerper fuer elektrische haushaltsgeraete, wie haartrockner, heizluefter o.dgl.
DE3033325C2 (de) * 1980-09-04 1982-04-22 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Elektrischer Brotröster

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2727940A1 (de) * 1976-06-21 1977-12-29 Sperry Rand Corp Elektrischer heissluftspender, insbesondere zur haarpflege

Also Published As

Publication number Publication date
DE8706465U1 (de) 1987-10-08
SG91192G (en) 1993-01-29
ES2025087B3 (es) 1992-03-16
DE3616405C2 (enrdf_load_stackoverflow) 1989-07-13
DE3616405A1 (de) 1987-11-19
EP0245757A1 (de) 1987-11-19
HK92892A (en) 1992-11-27

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