EP0841428B1 - Überhitzungsanzeiger für Elektro-Haushaltsgerät - Google Patents

Überhitzungsanzeiger für Elektro-Haushaltsgerät Download PDF

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Publication number
EP0841428B1
EP0841428B1 EP19970420202 EP97420202A EP0841428B1 EP 0841428 B1 EP0841428 B1 EP 0841428B1 EP 19970420202 EP19970420202 EP 19970420202 EP 97420202 A EP97420202 A EP 97420202A EP 0841428 B1 EP0841428 B1 EP 0841428B1
Authority
EP
European Patent Office
Prior art keywords
indicator
self
thermostat
holding system
electrical
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
EP19970420202
Other languages
English (en)
French (fr)
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EP0841428A1 (de
Inventor
Serge Cubizolles
Thierry Gailhard
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.)
SEB SA
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SEB SA
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Publication date
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Publication of EP0841428A1 publication Critical patent/EP0841428A1/de
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Publication of EP0841428B1 publication Critical patent/EP0841428B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/26—Temperature control or indicating arrangements

Definitions

  • the present invention relates to the general technical field of household electrical heating appliances, and more particularly to devices with different distinct heating powers depending on their usage.
  • the invention applies for example to irons, cooking appliances or wax epilators.
  • the present invention relates more particularly to an apparatus provided a means indicating overheating following an order or a setting route of said device, see for example EP-A-0 677 860. It is thus already known to use two thermostats adjusted to different temperatures and associated with a wired logic allowing indicate according to the state of said thermostats if the appliance is at a temperature too low or too high. Such a system presents a major drawback insofar as the use of two thermostats leads at a significant additional cost.
  • the object of the present invention is to remedy the drawbacks mentioned above and to make a simplified overheating indicator for devices household appliances, reliably and inexpensively, in component costs and Manufacturing.
  • Another object of the present invention aims to considerably reduce the complexity of the various elements or constituent parts of the device allowing to realize an overheating indicator.
  • Another object of the present invention is to provide an apparatus, having an overheating indicator to prevent misuse of said device.
  • a state indication device for household appliances comprising at minus one heating element whose electrical supply is controlled by a thermostat, a device for selecting a set temperature and control means to indicate that the temperature has exceeded selected setpoint, characterized in that the control means have an electrical or electronic circuit connected in parallel to the thermostat, said circuit comprising on the one hand a self-maintained system controlling a visual or audible indicator, and on the other hand a means for initiate said self-maintained system upon actuation of the selection, the assembly being deactivated by closing the thermostat.
  • Figure 1 thus shows the mains power supply with the branches L, N respectively representing the phase and the neutral of the sector.
  • Figure 1 also shows a heating element 1 in series with a thermostat 2, the assembly being connected to the mains.
  • Thermostat 2 and produced in a known manner and in particular with a switch 2a allowing open or close the heating element supply circuit 1 by temperature function, either of the heating element or of hot parts of the device on which it is mounted.
  • Thermostat 2 has a structure known per se, which allows, using a setpoint selection device, to control adequately heating element 1 and thus obtaining a temperature optimal operation of the device.
  • the latter also includes in accordance with the invention of the control means for indicating a exceeding the selected setpoint temperature.
  • these means include an electronic circuit 8 connected in parallel to the thermostat 2. This circuit is connected as shown for example the Figure 1, on a connection point 7a located between the heating element 1 and the thermostat 2.
  • the electronic circuit 8 consists in particular of a system self-maintained 4 connected in series with a visual or audible indicator 3.
  • the self-maintained system 4 is for example made up of a thyristor 4a, which is fitted in series with the indicator 3.
  • the device according to the invention also includes means for initiate thyristor 4a following actuations of the selection.
  • the thyristor 4a and the indicator 3 are connected to the point 7a connection through rectifying and filtering elements 6. These thus allow the use of electrical or electronic components adapted to the voltage from these rectifying and filtering means 6.
  • the electronic circuit 8 is therefore supplied electrically through the elements rectification and filtering 6.
  • the means for starting the thyristor 4a comprises a switch control 5 mechanically connected by any means to the selection member 16 and making a fugitive microswitch whose closure is synchronized with a displacement of said selection member 16.
  • Figure 4 shows an example of embodiment and arrangement of such fugitive microswitch relative to the selection device 16.
  • the latter includes thus a linear cursor 18, one end 18a of which makes a rack cooperating with an adjustment wheel 2b of the thermostat 2.
  • the adjustment wheel 2b advantageously has a serration engaging on the end 18a.
  • a such an assembly makes it possible to transform a linear movement of the cursor 18 into rotary movement.
  • the selection member 16 also consists of a support piece 16a for driving the cursor 18. Support piece 16 has a relative movement with respect to the cursor 18, and this against the force return spring 17. The latter allows to release the support piece 16a of the control switch 5 when the user no longer exerts pressure on said support piece 16a.
  • the control switch 5 is indeed integral of the cursor 18 and the support piece 16a has a configuration allowing it actuate said control switch 5. So when the user moves the cursor 18, it exerts a force in the direction F, on the support piece 16a, which actuates the control switch 5. When the user releases the selection member 16, the spring 17 makes it possible to release the switch control 5 of the pressure exerted by the support piece 16a. The closure of the control switch 5 takes place only when the cursor 18 is moved according to direction F. Such an assembly consequently achieves a contact or a Fugitive microswitch.
  • the control switch 5 is connected to a branch of the circuit 8 using of wires 5a, 5b connected respectively to the thyristor 4a in order to initiate this last, as well as on a connection point 7b located between the indicator 3 and the rectifying and filtering elements 6.
  • the control switch 5 preferably performs a very short or instant but sufficient closure however to prime thyristor 4a.
  • the microswitch produced by the control switch 5 is advantageously mounted on means elastic or springs not shown in the figures, and driven by the displacement of the selection member 16, said springs being able to fill possibly the function of the spring 17.
  • connection point 7b can be connected directly by a simple short circuit on the connection point 7a, in eliminating the rectifying and filtering means 6. It suffices in this case to use components for electronic circuit 8 adapted to the voltage supplied by the sector.
  • the circuit 8 in this case comprises a self-maintained system constituted a relay 13, which is produced with a coil 13a driving two relay switches 14 and 15.
  • the indicator 3 is connected to the point of connection 7b and on neutral N through the first relay switch 14.
  • the coil 13a is connected on the one hand to neutral N and on the other hand to the point 7b, via the second relay switch 15.
  • the switch control 5 is connected in parallel to the second relay switch 15.
  • the relay 13 only comprises the first relay switch 14 connected between the coil 13a and the indicator 3, said coil 13a being connected to the neutral N and said indicator 3 being connected to connection point 7b.
  • Rectifying and filtering elements 6, known per se, are arranged between the connection points 7a and 7b so as to supply direct current to the indicator 3 and to the coil 13a.
  • the control switch 5 is connected in parallel with the indicator 3 and the first relay switch 14. With a judicious choice of the characteristics of the relay 13 and of the indicator 3, the rectifying and filtering elements 6 can be eliminated and replaced by a short circuit.
  • the means for starting the thyristor 4a includes the control switch 5 capable of connecting phase L to said audit thyristor 4a, via an interface 10 to limit the current of the priming signal.
  • the control switch 5 is connected in parallel with a branch of circuit comprising a resistor 11 and a capacitor 12.
  • the device according to the invention therefore comprises means capable of return indicator 3 to its initial operating status consecutively power supply failure.
  • the initial state corresponds to the state of indicator 3 just before the power supply breaks. A use an appliance that is too hot can thus be avoided.
  • This operating state corresponds to overheating compared to the conservation temperature.
  • the actuation of the selection member 16 a caused the ignition of thyristor 4a, and consequently the operation of indicator 3, by at least instantaneous closing of the command 5 or microswitch.
  • switch 2a closes the heating element supply circuit 1 and short-circuits same time the electronic circuit 8.
  • the closing of the switch 2a indicator 3 also stops or goes out. evolution thus makes it possible to indicate to the user that the device is in a operating condition with an optimal temperature and not higher than the setpoint selected. The extinction of indicator 3 therefore attests that the device is ready to use.
  • the device according to the present invention has an advantage unsuspected insofar as it eliminates the use of a on the one hand from systems with non-standard thermostats and on the other hand from a expensive processing electronics.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Temperature (AREA)

Claims (9)

  1. Zustandsanzeigevorrichtung für Elektro-Haushaltsgeräte mit mindestens einem Heizelement (1), dessen elektrische Versorgung durch einen Thermostat (2) angesteuert wird, einem Organ (16) zum Auswählen einer Solltemperatur und Überwachungsmitteln zum Anzeigen einer Überschreitung der ausgewählten Solltemperatur, dadurch gekennzeichnet, daß die Überwachungsmittel einen elektrischen oder elektronischen Schaltkreis (8) aufweisen, der mit dem Thermostat (2) parallelgeschaltet ist, wobei der Schaltkreis (8) einerseits ein selbsthaltendes System (4), das eine optische oder akustische Anzeige (3) steuert, und andererseits ein Mittel umfaßt, um das selbsthaltende System (4) auszulösen, sobald das Auswahlorgan betätigt wird, wobei die Baugruppe durch das Schließen des Thermostats (2) deaktiviert wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der elektrische oder elektronische Schaltkreis (8) durch Gleichrichtungs- und Filterelemente (6) versorgt ist.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das selbsthaltende System (4) aus einem Thyristor (4a) besteht, der mit der Anzeige (3) in Reihe geschaltet ist.
  4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das selbsthaltende System (4) aus einem Relais (13) besteht, das mit einer Spule (13a) ausgeführt ist, die mindestens einen Relaisunterbrecher (14, 15) ansteuert.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Mittel zum Auslösen des selbsthaltenden Systems (4) einen Schalter (5) umfaßt, der mit dem Auswahlorgan (16) mechanisch verbunden ist und einen Mikroschließer bildet, dessen Schließung mit einer Verschiebung des Auswahlorgans synchronisiert ist.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Schaltkreis (8) Mittel aufweist, die in der Lage sind, nach einer Unterbrechung der Stromversorgung die Anzeige (3) wieder in deren ursprünglichen Betriebszustand zu versetzen.
  7. Bügeleisen mit einer Vorrichtung nach einem der Ansprüche 1 bis 5.
  8. Kochgerät mit einer Vorrichtung nach einem der Ansprüche 1 bis 5.
  9. Gerät zum Enthaaren mit Hilfe von Wachs, mit einer Vorrichtung nach einem der Ansprüche 1 bis 5.
EP19970420202 1996-11-08 1997-10-31 Überhitzungsanzeiger für Elektro-Haushaltsgerät Expired - Lifetime EP0841428B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9613995 1996-11-08
FR9613995A FR2755762B1 (fr) 1996-11-08 1996-11-08 Indicateur de surchauffe pour appareil electromenager

Publications (2)

Publication Number Publication Date
EP0841428A1 EP0841428A1 (de) 1998-05-13
EP0841428B1 true EP0841428B1 (de) 2001-11-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970420202 Expired - Lifetime EP0841428B1 (de) 1996-11-08 1997-10-31 Überhitzungsanzeiger für Elektro-Haushaltsgerät

Country Status (4)

Country Link
EP (1) EP0841428B1 (de)
DE (1) DE69708579T2 (de)
ES (1) ES2166517T3 (de)
FR (1) FR2755762B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0404396D0 (en) * 2004-02-27 2004-03-31 Deo Beauty Products Ltd Improved wax heater
CN116759991B (zh) * 2023-08-21 2023-10-27 交口县光煜光伏发电有限责任公司 光伏汇流箱报警及跳闸保护功能装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0677860B1 (de) * 1994-04-12 2001-12-12 Moulinex S.A. Thermostat zur Steuerung der Schaltungsanordnung zur Stromversorgung des Heizelementes eines gerätes

Also Published As

Publication number Publication date
DE69708579T2 (de) 2002-07-04
ES2166517T3 (es) 2002-04-16
FR2755762A1 (fr) 1998-05-15
DE69708579D1 (de) 2002-01-10
FR2755762B1 (fr) 1998-12-24
EP0841428A1 (de) 1998-05-13

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