EP0293997A1 - Elektrische Widerstände, aufgebaut aus gewelltem Widerstandsdraht, für Axialströmungsgebläse - Google Patents

Elektrische Widerstände, aufgebaut aus gewelltem Widerstandsdraht, für Axialströmungsgebläse Download PDF

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Publication number
EP0293997A1
EP0293997A1 EP88201100A EP88201100A EP0293997A1 EP 0293997 A1 EP0293997 A1 EP 0293997A1 EP 88201100 A EP88201100 A EP 88201100A EP 88201100 A EP88201100 A EP 88201100A EP 0293997 A1 EP0293997 A1 EP 0293997A1
Authority
EP
European Patent Office
Prior art keywords
electrical resistance
fact
resistance wire
undulated
blades
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.)
Withdrawn
Application number
EP88201100A
Other languages
English (en)
French (fr)
Inventor
Franco Losini
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.)
GAMMA SpA
Original Assignee
GAMMA SpA
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 GAMMA SpA filed Critical GAMMA SpA
Publication of EP0293997A1 publication Critical patent/EP0293997A1/de
Withdrawn legal-status Critical Current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 resistance for axial flow fanheaters, using undulated resistance wire, which constitutes a considerable technical advance compared to the types which currently exist.
  • the first system consists of the formation of a spiral of resistance wire of the length desired, the winding of the said spiral being wound manually on continuous mica supports, arranged radially and attached to another support of iron or plastic.
  • a resistance tape or wire is bent into an undulation (with a depth of 3 - 4 cm) and this is rivetted onto the external circumference of a continuous mica ring which is, in turn, attached to another support of iron or plastic.
  • the problems previously referred to are in fact brilliantly solved by the electrical resistance of this invention, characterised by the fact that the undulated resistance wire is uniformly distributed to form a polygonal layout, being attached to step-shaped mica blades and arranged radially in a star-shaped conformation on a metal support in such a way as to produce uniform airflows and temperatures under the various conditions of use.
  • the heating element comprises a metal support 1 which forms an overall polygon shape, with grooved support section 2 extending radially from the apexes into which are slotted the continuous mica blades 3 which have a special stepped configuration 4 and which are fixed in position with a punching system which creates protruberances 5 which lock into corresponding hollows 6.
  • the heating part of the element is constructed from undulating resistance wire 7, with a depth of undulation which can vary according to requirements, and this resistance wire is wound onto the continuous mica blades 3 arranged on the steps 4, so that the electrical resistance has the overall configuration of a stepped pyramid with a polygonal base, thus producing an excellent implementation of uniform distribution 8 of the resistance wire 7 over the whole surface of the element over which the air flows with the objective of ensuring that the airflows are not at different temperatures.
  • the heating element comprises, as is commonly the case, two or more resistances which can function simultaneously in parallel or singly
  • these resistances R1, R2 are wound in alternate turns, thus creating an alternation between one winding and the next of the two resistance elements which dissipate the heat, always with the objective of obtaining the maximum possible airflows and uniform temperatures under the various working conditions.

Landscapes

  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Resistance Heating (AREA)
EP88201100A 1987-06-04 1988-06-01 Elektrische Widerstände, aufgebaut aus gewelltem Widerstandsdraht, für Axialströmungsgebläse Withdrawn EP0293997A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2079187 1987-06-04
IT20791/87A IT1204682B (it) 1987-06-04 1987-06-04 Resistenza elettrica per termoventilatore a flusso assiale,eseguita con filo resistivo sagomato ad onda

Publications (1)

Publication Number Publication Date
EP0293997A1 true EP0293997A1 (de) 1988-12-07

Family

ID=11172116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88201100A Withdrawn EP0293997A1 (de) 1987-06-04 1988-06-01 Elektrische Widerstände, aufgebaut aus gewelltem Widerstandsdraht, für Axialströmungsgebläse

Country Status (2)

Country Link
EP (1) EP0293997A1 (de)
IT (1) IT1204682B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338604A1 (de) * 1988-04-20 1989-10-25 GAMMA S.p.A. Konischer elektrischer Hochleistungswiderstand für Haartrockner und dergleichen
US5414794A (en) * 1993-10-26 1995-05-09 Shao; Steve Quickly-mountable securing structure for electric heating element in a heater fan
US5619612A (en) * 1994-01-18 1997-04-08 Appliance Development Corp. Electric air heater with cage-shaped heating element comprised of resistance alloy strips and inclined guide vanes
US6035097A (en) * 1996-08-26 2000-03-07 Braun Gmbh Electrical heating unit with two concentrically disposed heating elements
EP1884962A1 (de) * 2006-08-04 2008-02-06 Gamma S.P.A. Elektrischer Widerstand für ein Heizgerät
CN102551309A (zh) * 2012-01-16 2012-07-11 宁波泰利电器有限公司 一种电吹风用的加热装置
CN109140770A (zh) * 2018-08-30 2019-01-04 中山市康舒美电器有限公司 一种发热装置和暖风机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1540731A1 (de) * 1965-07-02 1969-12-11 Eichenauer Fa Fritz Elektrisches Drahtheiz-Element
DE2407588A1 (de) * 1974-02-16 1975-08-28 Eichenauer Fa Fritz Heizkoerper fuer luefter
DE2849258A1 (de) * 1978-11-14 1980-05-29 Eichenauer Fa Fritz Elektrischer heizkoerper fuer fluide medien
FR2441986A1 (fr) * 1978-11-14 1980-06-13 Eichenauer Fritz Corps de chauffe electrique pour fluides
EP0038414A1 (de) * 1980-04-18 1981-10-28 Braun Aktiengesellschaft Elektrisches Drahtheizelement
GB2174900A (en) * 1985-04-30 1986-11-19 Bristol Myers Co Hair dryer heater
EP0219916A1 (de) * 1985-10-21 1987-04-29 North American Philips Corporation Heizelement für Gebläsetrockner, Farbentferner und dergleichen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1540731A1 (de) * 1965-07-02 1969-12-11 Eichenauer Fa Fritz Elektrisches Drahtheiz-Element
DE2407588A1 (de) * 1974-02-16 1975-08-28 Eichenauer Fa Fritz Heizkoerper fuer luefter
DE2849258A1 (de) * 1978-11-14 1980-05-29 Eichenauer Fa Fritz Elektrischer heizkoerper fuer fluide medien
FR2441986A1 (fr) * 1978-11-14 1980-06-13 Eichenauer Fritz Corps de chauffe electrique pour fluides
EP0038414A1 (de) * 1980-04-18 1981-10-28 Braun Aktiengesellschaft Elektrisches Drahtheizelement
GB2174900A (en) * 1985-04-30 1986-11-19 Bristol Myers Co Hair dryer heater
EP0219916A1 (de) * 1985-10-21 1987-04-29 North American Philips Corporation Heizelement für Gebläsetrockner, Farbentferner und dergleichen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338604A1 (de) * 1988-04-20 1989-10-25 GAMMA S.p.A. Konischer elektrischer Hochleistungswiderstand für Haartrockner und dergleichen
US5414794A (en) * 1993-10-26 1995-05-09 Shao; Steve Quickly-mountable securing structure for electric heating element in a heater fan
US5619612A (en) * 1994-01-18 1997-04-08 Appliance Development Corp. Electric air heater with cage-shaped heating element comprised of resistance alloy strips and inclined guide vanes
US6035097A (en) * 1996-08-26 2000-03-07 Braun Gmbh Electrical heating unit with two concentrically disposed heating elements
EP1884962A1 (de) * 2006-08-04 2008-02-06 Gamma S.P.A. Elektrischer Widerstand für ein Heizgerät
CN102551309A (zh) * 2012-01-16 2012-07-11 宁波泰利电器有限公司 一种电吹风用的加热装置
WO2013107061A1 (zh) * 2012-01-16 2013-07-25 宁波泰利电器有限公司 一种电吹风用的加热装置
US20140326713A1 (en) * 2012-01-16 2014-11-06 Ningbo Taili Electric Co., Ltd. Heating device for an electric hair dryer
CN109140770A (zh) * 2018-08-30 2019-01-04 中山市康舒美电器有限公司 一种发热装置和暖风机

Also Published As

Publication number Publication date
IT1204682B (it) 1989-03-10
IT8720791A0 (it) 1987-06-04

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

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Effective date: 19890608