EP0517703A1 - Appareil de soins capillaires a gaz possedant au moins deux vaporisateurs. - Google Patents

Appareil de soins capillaires a gaz possedant au moins deux vaporisateurs.

Info

Publication number
EP0517703A1
EP0517703A1 EP91901283A EP91901283A EP0517703A1 EP 0517703 A1 EP0517703 A1 EP 0517703A1 EP 91901283 A EP91901283 A EP 91901283A EP 91901283 A EP91901283 A EP 91901283A EP 0517703 A1 EP0517703 A1 EP 0517703A1
Authority
EP
European Patent Office
Prior art keywords
phase
gas
heating
intermediate container
evaporator
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
EP91901283A
Other languages
German (de)
English (en)
Other versions
EP0517703B1 (fr
Inventor
Jiri Dr Sobota
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 EP0517703A1 publication Critical patent/EP0517703A1/fr
Application granted granted Critical
Publication of EP0517703B1 publication Critical patent/EP0517703B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel

Definitions

  • the invention is based on a device for personal use with a container for holding liquefied gas, the gas supply being determined by connecting at least two throttles in series.
  • the object of the invention is to reduce the heating-up time of the devices mentioned at the outset and to avoid overheating of the device using simple structural means without temperature control. This object is achieved by a device with the features of claim 1.
  • the burner is supplied with fuel in the desired manner without the need for regulating or control means and the temperature profile in the starting phase is controlled without a temperature controller in such a way that the burner has reached its operating temperature after a very short time.
  • the gas supply is no longer determined essentially by the first throttle for high gas throughput, but rather by connecting the at least two or more throttles in series.
  • the volume of the intermediate container is determined by the duration of the heating phase, the flow rate of the gas being determined by the permeability of the two throttles.
  • the permeability of the second throttle is equal to or higher than that of the first throttle.
  • Such a device can be used in particular, but not exclusively, in devices which are operated with catalytic combustion or with an open gas flame and in which a constant temperature or a constant heating output is desired.
  • the two throttles are designed as evaporators, the first evaporator being connected to the outlet opening of the first container and the second evaporator being connected to the outlet opening of the intermediate container.
  • the intermediate container is dimensioned in such a way that, before use of the device, approximately the amount of liquefied gas that accumulates to give off the required heat output during the heating phase accumulates in it.
  • the second evaporator is provided between the intermediate container and a nozzle to which the heater is connected.
  • liquid gas can accumulate in the intermediate container until the pressure level in both containers is approximately the same. After opening the closure device, a large amount of gas can be used to burn the heater from the intermediate container in a relatively short time drain, with additional fuel flowing from the first container due to the pressure difference between the containers. As soon as the steady state has been reached and the heating has reached its operating temperature, a gas flow is established which corresponds to the flow resistance of the series connection of the two evaporators.
  • the dimensioning of the permeability of the evaporators and the volume of the intermediate container is determined by the duration of the heating phase and the required heat output.
  • Fig. 1 is a schematic representation of the container for the
  • Fig. 2 shows a temperature profile over the heating-up time of a gas-operated heater
  • Fig. 3 shows the fuel consumption of the gas-operated burner in the heating-up phase of the heater and after reaching the
  • 1 denotes a container of a device for personal use, not shown in the drawing for the sake of simplicity, which can be, for example, a gas curling iron with a gas-operated burner for a heater.
  • the container 1 serves to hold liquid gas, which is fed via a first evaporator 2 in a line 4 to an intermediate container 3 with a smaller capacity.
  • An outlet opening 9 of the intermediate container 3 can be closed via a closure device or a valve 7. If the device is not in use, the outlet opening 9 is closed by means of the valve 7. closed.
  • the gas collected in liquid or gaseous form in the intermediate container 3 cannot flow out to a downstream burner, which is used to operate a heater, not shown.
  • a burner is already described in detail in US-A 4354482, the disclosure content of which is part of this application by express reference.
  • a line 10, in which a second evaporator 5 is provided connects to the outlet opening 9 of the intermediate container 3, the flow rate of which is preferably approximately equal to or greater than the flow rate of the first evaporator 2.
  • a nozzle is located behind the evaporator 5 6, via which a burner can be supplied with fuel in gaseous form, which in turn operates a heater. It is also readily possible to arrange the valve 7 downstream of the evaporator 5 without leaving the scope of the invention.
  • heating In order to achieve a short heating-up time, heating must initially be carried out with a higher output. This is advantageously achieved by providing the burner with more fuel in a short time unit in the heating phase than is necessary after the operating temperature has been reached.
  • the fuel consumption of a burner with regulated fuel supply results in the heating phase from the course of curve D in phase I according to FIG. 3.
  • the heating output is designed to meet the requirement that a surface to be heated remain steady, the temperature rises according to a transition function according to the following formula:
  • V is a gain factor
  • T corresponds to the time constant
  • t represents the time coordinate
  • the heating power is designed for the heating-up phase.
  • the heating power must be reduced by means of a temperature controller or a control, since otherwise the temperature would rise above the permissible level (see curve C in FIG. 2). Operation with constant heating power is shown by curve A.
  • the intermediate container 3 is provided behind the first evaporator 2 with an additional storage volume, which accumulates fuel in front of the valve 7 until it is opened. If the valve 7 is opened during start-up, then the second evaporator 5 essentially determines the flow rate of the fuel from the nozzle 6 (see phase I in FIG. 3). The second evaporator 5 determines the flow rate until the intermediate container 3 no longer contains liquid gas (see phase II). In phase II, the pressure in the intermediate container 3 gradually drops, as a result of which the amount of fuel emerging from the nozzle 6 is reduced. In phase III the flow rate then arises which corresponds to the series connection of the flow resistances of the two evaporators 2, 5.
  • phase III the temperature and the amount of fuel flowing out of the nozzle 6 remain essentially constant.
  • a faster reaching of the target temperature can be achieved without the need for complex and thus expensive temperature control or additional temperature control.
  • the choice of the materials to be used for the evaporators and containers is known from the prior art, for example for gas lighters. The person skilled in the art is thus able to make an appropriate selection.
  • Several evaporators with corresponding intermediate containers can also be connected in series in order to ensure a more precise adaptation to the special requirements. This does not leave the scope of the invention.

Landscapes

  • Feeding And Controlling Fuel (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cosmetics (AREA)

Abstract

Appareil à gaz à usage personnel équipé d'un récipient (1) recevant un gaz liquéfié amené, à un dispositif de chauffage, en phase gazeuse au moyen d'au moins deux vaporisateurs (2, 5) en intercalant un récipient intermédiaire (3). De cette façon, une quantité élevée de combustible est mise à disposition du brûleur pendant la phase de mise en température en un temps très court par rapport à la phase stationnaire et, de ce fait, la phase de mise en température est réduite.
EP91901283A 1990-02-27 1990-12-19 Appareil de soins capillaires a gaz possedant au moins deux vaporisateurs Expired - Lifetime EP0517703B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4006135A DE4006135A1 (de) 1990-02-27 1990-02-27 Gasbetriebenes haarpflegegeraet mit wenigstens zwei verdampfern
DE4006135 1990-02-27
PCT/EP1990/002241 WO1991012746A1 (fr) 1990-02-27 1990-12-19 Appareil de soins capillaires a gaz possedant au moins deux vaporisateurs

Publications (2)

Publication Number Publication Date
EP0517703A1 true EP0517703A1 (fr) 1992-12-16
EP0517703B1 EP0517703B1 (fr) 1994-10-19

Family

ID=6401056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901283A Expired - Lifetime EP0517703B1 (fr) 1990-02-27 1990-12-19 Appareil de soins capillaires a gaz possedant au moins deux vaporisateurs

Country Status (4)

Country Link
EP (1) EP0517703B1 (fr)
AT (1) ATE112942T1 (fr)
DE (2) DE4006135A1 (fr)
WO (1) WO1991012746A1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327752A (en) * 1979-12-05 1982-05-04 Braun, Aktiengesellschaft Rotary ignition system for a catalytically heated curling device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9112746A1 *

Also Published As

Publication number Publication date
WO1991012746A1 (fr) 1991-09-05
DE4006135A1 (de) 1991-09-05
ATE112942T1 (de) 1994-11-15
EP0517703B1 (fr) 1994-10-19
DE59007529D1 (de) 1994-11-24
DE4006135C2 (fr) 1991-12-12

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