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EP2809196A2 - Dispositif et procédé de production d'un flux d'air chaud - Google Patents

Dispositif et procédé de production d'un flux d'air chaud

Info

Publication number
EP2809196A2
EP2809196A2 EP13702920.3A EP13702920A EP2809196A2 EP 2809196 A2 EP2809196 A2 EP 2809196A2 EP 13702920 A EP13702920 A EP 13702920A EP 2809196 A2 EP2809196 A2 EP 2809196A2
Authority
EP
European Patent Office
Prior art keywords
heat
accumulator
flow
heat flow
drive unit
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Withdrawn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
EP13702920.3A
Other languages
German (de)
English (en)
Inventor
André THESS
Stefan Moldenhauer
Tilman STARK
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.)
Exonda Salon Tools GmbH
Original Assignee
Exonda Salon Tools 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 Exonda Salon Tools GmbH filed Critical Exonda Salon Tools GmbH
Publication of EP2809196A2 publication Critical patent/EP2809196A2/fr
Withdrawn legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0423—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between hand-held air guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0416—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters
    • F24H9/0073—Arrangement or mounting of means for forcing the circulation of air
    • F24H9/0078—Arrangement or mounting of means for forcing the circulation of air for storage heaters
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2240/00—Fluid heaters having electrical generators
    • F24H2240/08—Fluid heaters having electrical generators with peltier elements

Definitions

  • the present invention relates to a cordless, portable device and a method for generating a hot air flow, wherein with an integrated electrically rechargeable heat storage both the heating and the blower function is realized.
  • Hot air blower Devices for generating a hot air stream (hereinafter also referred to as a hot air blower) today find a variety of applications: In the craft for removing old paint layers, for shrinking shrink tubing or accelerating chemical curing processes. Even in private use have hot air blower in the form of hair dryers, which are operated on the power grid, obtained a particularly large spread.
  • cordless hot air blowers with built-in energy storage are more suitable due to their independence from a power source for a variety of applications such as hairdressing.
  • the present invention has a particularly advantageous structure for this purpose. From the state of the art are already beyond the usual mains-powered, little flexible usable hot air blowers without their own energy storage different network independent Devices known.
  • an electrical accumulator is installed as an energy store, as described for example in document CA 2 614 584.
  • Another disadvantage of the accumulator is its low cycle stability. By this is meant that the capacity of an accumulator for energy storage is exhausted after a few hundred charge and discharge cycles and it must be replaced by a new accumulator.
  • Other disadvantages are added by the two energy storage systems in the system: In addition to the additional weight due to the two built-in memory and the higher costs, there is an increased vulnerability in systems with two energy storage. In addition, these systems can hardly benefit from the advantage of the shorter charging time of the faster rechargeable heat accumulator over the accumulator, since always both Energyspeieher must be charged. These disadvantages are partially overcome by the use of a combustion-based heat source.
  • thermoelectric generator which generates electrical energy for driving the blower.
  • the waste heat of the thermoelectric generator is used to heat the air flow.
  • Figure 1 - a first embodiment of
  • Figure 4 is a detail view of a passive
  • Heat flow control Figure 5 - a detailed view of an active
  • Heat engine converted into mechanical energy to drive the blower The waste heat of the heat engine is used to heat the air flow.
  • the temperature drop of the heat accumulator is counteracted by a heat flow control.
  • a heat storage (2), a drive unit (5) and a fan (7) are housed in a handy housing (10).
  • the heat storage (2) can be designed as a sensitive heat storage or as a latent heat storage and consists of a material or material combinations with high heat storage capacity such as solid metal, graphite, ceramic, melting salt or melting metal.
  • the drive unit (5) consists of a thermoelectric generator (5a) and an electric motor (5b).
  • a thermoelectric generator converts a part of the thermal energy supplied to it into electrical energy and is therefore very suitable, and because of its small size and insensitivity, as a heat engine in the device according to the invention.
  • the recovered electrical energy is inventively for used the drive of the electric motor (5b), which in turn sets the fan wheel (7) in motion.
  • the drive unit (5) as any heat engine, e.g. as a Stirling engine or pulse tube motor (6) (see Figure 2), wherein a pulse tube motor [1] a heat engine is understood, which is formed by application of the pulse tube used in the cryogenic principle [2].
  • a heat engine used as a drive unit (5) is characterized in that it comprises a first, warm heat exchanger (4) as a heat source and a second, cold heat exchanger (8) as a heat sink and converts a part of the thermal energy supplied to it at a high temperature level into mechanical energy , which is used to drive the fan wheel (7).
  • the device according to the invention further comprises means for regulating the heat flow Wi (3) emerging from the heat accumulator (2) as well as switches (9).
  • the heat accumulator (2) in the associated charging station (1) is charged by means of an induction or resistance heater.
  • the charging current can be very high (16 A fuse of the socket) to ensure a short charging time.
  • the heat accumulator (2) supplies to the first, warm heat exchanger (4) via the means for regulating the heat flow Wi (3) leaving the heat accumulator (2) a regulated heat flow i.
  • the regulation of the heat flow Wi is necessary in order to compensate for the decreasing temperature associated with the cooling heat accumulator (2), which otherwise quickly becomes one decreasing output of the heat engine would result.
  • the heat engine converts depending on the embodiment, a part of the regulated supplied
  • a hot airflow L 2 is available for the application.
  • Heat engine may be low, since the required for heating the air flow Li low temperature heat flow W 2 of the heat engine is much greater than the mechanical power Mi required to drive the fan wheel (7).
  • the regulation of the heat flow Wi can be solved passively in one embodiment of the invention.
  • warm heat exchanger (4) is a temperature-dependent thermal resistance, the value of which increases with increasing storage temperature. This is realized, for example, by a layer of heat-conducting material with heat conductivity inversely proportional to the temperature, for example Al 2 O 3 .
  • Another variant is to provide the thermal resistance with a temperature-dependent heat transfer surface whose value decreases with increasing temperature.
  • FIG 4 there is an advantageous embodiment of the heat flow control in a coaxial arrangement of a cylinder (11) in a hollow cylinder (12).
  • the cylinder (11) is connected to the heat engine and the surrounding hollow cylinder (12) with the heat storage (2) connected.
  • the materials of both cylinders are chosen so that the gap between the cylinders increases with increasing temperature.
  • the over the gap, and thus between heat storage (2) and heat engine, transmitted heat flow i is thus temperature independent.
  • a simultaneous application of the said possibilities of heat flow control can lead to further advantages.
  • the height of the cylinder required for regulation can be reduced by a layer with temperature-dependent heat conduction coefficient applied to the inside of the hollow cylinder (12).
  • an active regulation of the heat flow Wi is conceivable.
  • an electrically operated adjusting mechanism (13) is used, which can be operated, for example, with a part of the electrical power of the thermoelectric generator.
  • a heat transfer element (14) By extending or retracting a heat transfer element (14), the heat transfer surface and thus the heat flow i between the heat storage (2) and the drive unit (5) is controlled.
  • the regulation takes place as a function of the measurement signal provided by a temperature sensor (15).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Solid-Fuel Combustion (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un dispositif et un procédé de production d'un flux d'air chaud. L'invention vise à proposer un dispositif sans fil portable et un procédé de production d'un flux d'air chaud, qui associent les avantages de rapidité de charge et de haut niveau de performance des systèmes basés sur la combustion aux avantages de plus grande sécurité et de bonne maniabilité du chargement électrique. A cet effet, la soufflerie d'air chaud selon l'invention comprend un accumulateur de chaleur électriquement rechargeable à volonté comme unique source d'énergie. Une partie de l'énergie thermique accumulée est convertie au moyen d'un moteur thermique en énergie mécanique servant à entraîner la soufflerie. La chaleur résiduelle du moteur thermique est utilisée pour chauffer le flux d'air. La baisse de température de l'accumulateur de chaleur est compensée par une régulation du flux de chaleur.
EP13702920.3A 2012-02-03 2013-02-01 Dispositif et procédé de production d'un flux d'air chaud Withdrawn EP2809196A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012002440.1A DE102012002440B4 (de) 2012-02-03 2012-02-03 Vorrichtung und Verfahren zur Erzeugung eines heißen Luftstroms
PCT/EP2013/000321 WO2013113513A2 (fr) 2012-02-03 2013-02-01 Dispositif et procédé de production d'un flux d'air chaud

Publications (1)

Publication Number Publication Date
EP2809196A2 true EP2809196A2 (fr) 2014-12-10

Family

ID=47678696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13702920.3A Withdrawn EP2809196A2 (fr) 2012-02-03 2013-02-01 Dispositif et procédé de production d'un flux d'air chaud

Country Status (3)

Country Link
EP (1) EP2809196A2 (fr)
DE (1) DE102012002440B4 (fr)
WO (1) WO2013113513A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743098B (zh) * 2014-01-15 2016-04-13 朱建新 高效固体电蓄热锅炉
DE102014004602A1 (de) 2014-03-27 2015-10-01 Technische Universität Ilmenau Vorrichtung und Verfahren zur Aufbereitung eines Luftstroms
CA2987273A1 (fr) * 2015-06-12 2016-12-15 University Of Maryland, College Park Unites et systemes de confort, procedes et dispositifs pour leur utilisation
DE102015111199B4 (de) * 2015-07-10 2022-08-18 Technische Universität Dresden Wärmestrom-Schaltanordnung
KR20200128997A (ko) * 2019-05-07 2020-11-17 엘지전자 주식회사 공기 청정기
DE102019126217A1 (de) * 2019-09-27 2021-04-01 Steinel Gmbh Heißluftgebläse und Heizmittel für ein Heißluftgebläse
CN112539556B (zh) * 2020-12-01 2022-04-01 中国航发沈阳发动机研究所 一种克级微小气流高温升加热器及具有其的加热结构

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
DE3103843A1 (de) * 1981-02-05 1982-09-02 Berthold 5820 Gevelsberg Baldering "handgeraet zum haartrocknen"
DE3429319A1 (de) * 1984-08-09 1986-02-27 Gimelli & Co. AG, Zollikofen Von hand zu fuehrendes warmluftgeraet
DE3518426A1 (de) * 1985-05-22 1986-11-27 Braun Ag, 6000 Frankfurt Warmluftgeblaese fuer netzunabhaengig betreibbare tragbare haarpflegegeraete
US4903416A (en) * 1987-10-15 1990-02-27 Levin Mark R Handheld cordless hair dryer
FR2662919B1 (fr) * 1990-06-12 1993-07-16 Cableco Sa Seche-cheveux electrique autonome.
BE1011253A6 (fr) * 1997-07-04 1999-06-01 Faco Sa Dispositif du type seche-cheveux ou similaire.
CA2614584A1 (fr) * 2000-09-15 2002-03-21 Louis Perez Seche-cheveux portatif
JP2004081693A (ja) * 2002-08-28 2004-03-18 Re-Tec:Kk ガス燃焼式の携帯ドライヤー及びこの携帯ドライヤーにおけるマイナスイオン発生方法
JP4333127B2 (ja) * 2002-11-26 2009-09-16 パナソニック電工株式会社 ヘアードライヤ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013113513A2 *

Also Published As

Publication number Publication date
WO2013113513A2 (fr) 2013-08-08
DE102012002440A1 (de) 2013-08-08
WO2013113513A3 (fr) 2013-11-21
DE102012002440B4 (de) 2014-06-26

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