EP2680666B1 - Sèche-cheveux - Google Patents
Sèche-cheveux Download PDFInfo
- Publication number
- EP2680666B1 EP2680666B1 EP13172373.6A EP13172373A EP2680666B1 EP 2680666 B1 EP2680666 B1 EP 2680666B1 EP 13172373 A EP13172373 A EP 13172373A EP 2680666 B1 EP2680666 B1 EP 2680666B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- hairdryer
- conductive coating
- heating
- heating device
- 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.)
- Not-in-force
Links
- 238000010438 heat treatment Methods 0.000 claims description 39
- 239000000758 substrate Substances 0.000 claims description 22
- 239000000919 ceramic Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000012799 electrically-conductive coating Substances 0.000 claims description 10
- SKRWFPLZQAAQSU-UHFFFAOYSA-N stibanylidynetin;hydrate Chemical compound O.[Sn].[Sb] SKRWFPLZQAAQSU-UHFFFAOYSA-N 0.000 claims description 10
- 239000002041 carbon nanotube Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 239000013543 active substance Substances 0.000 claims description 7
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 230000008021 deposition Effects 0.000 claims 1
- 238000000151 deposition Methods 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 239000006260 foam Substances 0.000 description 9
- 238000003860 storage Methods 0.000 description 4
- 239000003575 carbonaceous material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
- A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
-
- 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
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- 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
- H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
-
- 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
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
-
- 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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
-
- 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
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/013—Heaters using resistive films or coatings
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/022—Heaters specially adapted for heating gaseous material
-
- 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
- H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
- H05B2214/04—Heating means manufactured by using nanotechnology
Definitions
- the present invention relates to a hair dryer with a heating device according to the preamble of claim 1.
- a generic hairdryer includes a heater having wound and current-carrying metal heating wires.
- the heating wires can be wound either with the same or variable radius, so that not only the air near the housing wall, but also in the middle of the air flow can be heated directly.
- the heating wires are usually wound on Mikanithalteritch and then form according to the available wings square or hexagonal structures.
- the DE 10004177 A1 discloses an electric heating element, in particular for a radiant heater of an electric range, which consists of semiconducting ceramic, and a method for its preparation.
- the DE 10320659 A1 discloses a heating device, in particular for a circulating air heating of a cooking appliance, with a, arranged in the air flow of a blower for heating the air conveyed by this arranged electric heating element having an electrically heatable, heat-conducting and gas-permeable ceramic material, which is characterized in that the heating element at least in Sub-segments is arranged annularly around a radial outlet region of the blower.
- the CA 2 500 588 A1 discloses a heater, eg for a hair dryer, with a block of plastic foam having an electrically conductive coating.
- the EP 1 528 837 A1 relates to an electrically heatable structure of an electrically conductive plastic.
- the present invention addresses the problem of providing an improved in terms of weight, space and the quality of air embodiment of hair dryer of the generic type, which is characterized in particular by an alternative heating device.
- the present invention is based on the general idea, a heater of a generic hair dryer, completely new and thus form alternative to hitherto known heating devices with heating wires.
- the heating device according to the invention has an electrically non-conductive substrate as the carrier material and an electrically conductive coating arranged thereon, which heats up in the current-carrying state.
- an electrical insulator instead of a current flowing through the metal heating wire, an electrical insulator (substrate) is used, which is coated with an electrically conductive coating.
- an electrical insulator substrate
- the resistance values in particular the sheet resistance values, are of importance in order to determine the area and / or geometry needed for the required resistance of the heating device.
- the resistance can also be set via the layer thickness of the electrically conductive coating, after which, in any case, the power density, that is to say the power which may be introduced into the system per unit area, must be taken into account.
- the electrically insulated material are exemplified glass, glass fibers and ceramics. Of course, high-temperature-resistant plastics or silicones can also be used.
- an electrically conductive coating are exemplified carbonaceous materials (eg with carbon nanotubes and / or graphite and / or carbon black) indium tin oxide (ITO) and antimony tin oxide (ATO) or metal-containing coatings (eg steamings)) called.
- ITO indium tin oxide
- ATO antimony tin oxide
- metal-containing coatings eg steamings
- the heating device according to the invention is used in a hair dryer if the substrate has a comparatively high porosity and therefore a large surface area via which the heat transfer can take place.
- the air flow to be heated is thus preferably passed through the substrate.
- fibers eg glass fibers, eg coated with ATO
- porous foams eg ceramic or glass, eg coated with carbonaceous materials or ATO
- nonwovens eg glass, eg coated with ATO
- tubes eg glass or ceramic, eg coated with ATO or carbonaceous material.
- the heating device according to the invention also offers the possibility to build lighter hair dryer.
- High-temperature-resistant plastics or silicones can also work in this sense.
- the use of coated substrates requires significantly less installation space, in particular for heat transfer, than conventional heating wire heating systems. This should also apply to wound glass fiber heaters, provided that the resistance per length of this system is higher than that of the conventional heating wire, so with less wire length of the same resistance and thus the same heating power can be generated. It must always be ensured that the heating device generates the resulting power densities per area and if necessary, it can withstand long-term per volume.
- the required support plates can usually be made smaller, for example, shorter because fewer windings are required. This in turn gives new scope and new space reserves or opens the possibility to build the hair dryer itself smaller.
- the substrate and / or the conductive coating has catalytically active substances.
- catalytically active substances may be, for example, inorganic porous materials, such as, for example, zeolites or perlites, which, if appropriate, may additionally effect a fat storage or, in general, an odorant storage.
- Such an air-cleaning effect is also of great advantage in the case of catalytically active substances in hair dryers or hot-air styling brushes, since at the same time the quality of the air is improved when the hair is dried.
- Such a heater with catalytically active substances could therefore also be used in hot air blowers for heating rooms.
- a preparation of the heating device according to the invention can be carried out, for example, as follows: Starting in the present case of a carbon nanotubes (CNT) enriched ceramic slip, which is adjusted by the CNT content so that it after a final temperature step, a solid ceramic body, in particular the type of coating, with defined electrical resistance.
- the electrical resistance must be in a range that is an electrical Heating the material allows (eg at an operating voltage of 230 V a total resistance of less than 1 kOhm).
- a heatable foam body is now produced, in which initially an open-cell, organic foam is coated by means of a dipping process with the ceramic slip mixed with CNTs. Subsequently, both are fired together, whereby the organics burns and an open-cell, ceramic foam remains in the form of the original organic foam.
- This foam body can now be used as a heater thanks to its resistance reduced by the CNT.
- a conductive open-cell ceramic foam as follows: An existing ceramic foam of commercial oxide or silicate ceramic (ie not electrically conductive) is coated with an additional conductive layer of CNTs.
- a suitable electrical contacting must still take place, for example by partial metallization.
- this heater is introduced into the recirculating air stream, it can be heated by the application of electrical voltage until glowing and thus heats the air flowing through it. Due to the very large available contact surface between the heater and the overflowing air and the prevailing turbulent flow there is a particularly good heat transfer.
- there is the possibility of coating the contact surface with catalytically active materials because of the high prevailing temperatures allow a catalytic cleaning of the air directly to the heater.
- the advantages of the heating device according to the invention are, in particular, the comparatively high heating rate, the higher heating temperatures compared with the metal, high efficiency, the possibility of circulating air catalysis and the general absence of nickel and chromium.
- a hair dryer 4 has a heating device 2 according to the invention.
- the heating device 2 according to the invention has an electrically nonconductive substrate 5 as a carrier material and an electrically conductive coating 6 arranged thereon, which heats up in the current-carrying state.
- the substrate 5 may comprise, for example, glass, glass fibers, plastic, here in particular silicon or ceramic, wherein the substrate 5 may generally be made of silicon dioxide (Si 2 O), aluminum oxide (Al 2 O 3) or silicon nitride (Si 3 N 4).
- the electrically conductive coating 6 may be carbonaceous, in particular graphitic, sooty, or carbon nanotubes, or metal-containing. Also conceivable is a formation of indium tin oxide (ITO) or antimony tin oxide (ATO).
- ITO indium tin oxide
- ATO antimony tin oxide
- the substrate 5 has a porous, in particular foam-like and air-permeable structure and may have a porosity of 70 to 95%. In this case, the substrate 5 is permeable to air and also has a comparatively large inner surface, which leads to a good heat transfer. Due to the high inner surface, caused by the large porosity, also a turbulent flow when flowing through the heater 2 and thus also a good heat transfer is achieved.
- the coating 6 can be applied to the substrate 5, for example by means of vapor deposition, printing or spraying.
- the substrate 5 and / or the conductive coating 6 additionally comprise catalytically inorganic porous material constituents, such as zeolites or perlites, or other catalytically active substances, which in particular have a catalytic effect and, for example, odor emission or else odor storage, in particular one Fat storage, effect.
- the heat of combustion generated by these catalytically active substances could additionally serve to heat the air flowing through (energy labeling) or compensate for heat losses.
- the flow through the heating device 2 with the air to be heated for example, by means of a fan 8 (see. Fig. 1.2 ) respectively.
- a fan 8 see. Fig. 1.2
- an effective heating of the air to be heated can be achieved and achieve a generally completely different heating concept in previously known hair dryers 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Resistance Heating (AREA)
Claims (7)
- Sèche-cheveux (4) doté d'un dispositif de chauffage (2), le dispositif de chauffage (2) comprenant un substrat (5) électriquement non conducteur en tant que matériau de support ainsi qu'un revêtement (6) électriquement conducteur disposé dessus qui s'échauffe lorsqu'il est parcouru par le courant, caractérisé en ce que le substrat (5) et/ou le revêtement conducteur (6) comprend des substances catalytiquement actives.
- Sèche-cheveux (4) selon la revendication 1, caractérisé en ce que- le substrat (5) comprend du verre, des fibres de verre, de la matière plastique, en particulier de la silicone, ou de la céramique, et/ou- le substrat (5) est constitué de dioxyde de silicium (Si2O), d'oxyde d'aluminium (Al2O3) ou de nitrure de silicium (Si3N4).
- Sèche-cheveux (4) selon la revendication 1 ou 2, caractérisé en ce que le revêtement (6) électriquement conducteur contient du carbone, en particulier du graphite, de la suie, des nanotubes de carbone, de l'oxyde d'indium et d'étain (ITO), de l'oxyde d'antimoine et d'étain (ATO), ou il contient du métal.
- Sèche-cheveux (4) selon la revendication 1, 2 ou 3, caractérisé en ce que le substrat (5) possède une structure poreuse, en particulier de type mousse, perméable à l'air.
- Sèche-cheveux (4) selon la revendication 1, 2, 3 ou 4, caractérisé en ce que le revêtement (6) est déposé sur le substrat par vaporisation, impression ou pulvérisation.
- Sèche-cheveux (4) selon l'une des revendications précédentes, caractérisé en ce que le substrat (5) et/ou le revêtement conducteur (6) comprend des composants de matériau catalytiques inorganiques poreux, comme des zéolithes ou des perlites.
- Sèche-cheveux (4) selon l'une des revendications précédentes, caractérisé en ce que le substrat (5) a une porosité de 70-95 %.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012211173.5A DE102012211173A1 (de) | 2012-06-28 | 2012-06-28 | Haushaltsgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2680666A1 EP2680666A1 (fr) | 2014-01-01 |
EP2680666B1 true EP2680666B1 (fr) | 2017-12-06 |
Family
ID=48628341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13172373.6A Not-in-force EP2680666B1 (fr) | 2012-06-28 | 2013-06-18 | Sèche-cheveux |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2680666B1 (fr) |
DE (1) | DE102012211173A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210289907A1 (en) * | 2019-05-08 | 2021-09-23 | Foundation Of Soongsil University-Industry Cooperation | Cordless hair dryer |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6091482B2 (ja) * | 2014-12-10 | 2017-03-08 | 三發電器製造廠有限公司 | ヘアアイロン |
DE102017121041A1 (de) * | 2017-05-24 | 2018-11-29 | Webasto SE | Heizgerät und Verfahren zur Herstellung desselben |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3965047A (en) * | 1971-07-20 | 1976-06-22 | Ernest K. Cleland | Electrical resistant fluid-permeable heat generating member and method of producing the same |
US5963709A (en) * | 1997-05-13 | 1999-10-05 | Micropyretics Heaters International, Inc. | Hot air blower having two porous materials and gap therebetween |
DE10004177A1 (de) * | 2000-02-01 | 2001-08-02 | Ego Elektro Geraetebau Gmbh | Elektrisches Heizelement |
DE10320659B4 (de) * | 2003-05-08 | 2013-11-21 | BSH Bosch und Siemens Hausgeräte GmbH | Heizvorrichtung |
DE502004005690D1 (de) * | 2003-10-31 | 2008-01-24 | Behr Gmbh & Co Kg | Elektrisch beheizbare Kunststoffmatrix |
CA2500588A1 (fr) * | 2005-03-21 | 2006-09-21 | Yonggang Y.Z. Zhang | Element chauffant en mousse |
-
2012
- 2012-06-28 DE DE102012211173.5A patent/DE102012211173A1/de not_active Withdrawn
-
2013
- 2013-06-18 EP EP13172373.6A patent/EP2680666B1/fr not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210289907A1 (en) * | 2019-05-08 | 2021-09-23 | Foundation Of Soongsil University-Industry Cooperation | Cordless hair dryer |
US11641918B2 (en) * | 2019-05-08 | 2023-05-09 | Foundation Of Soongsil University-Industry Cooperation | Cordless hair dryer |
Also Published As
Publication number | Publication date |
---|---|
EP2680666A1 (fr) | 2014-01-01 |
DE102012211173A1 (de) | 2014-01-16 |
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