EP3444397B1 - Appareil à repasser et procédé de commande d'une unité de chauffage d'un appareil à repasser - Google Patents

Appareil à repasser et procédé de commande d'une unité de chauffage d'un appareil à repasser Download PDF

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Publication number
EP3444397B1
EP3444397B1 EP18187687.1A EP18187687A EP3444397B1 EP 3444397 B1 EP3444397 B1 EP 3444397B1 EP 18187687 A EP18187687 A EP 18187687A EP 3444397 B1 EP3444397 B1 EP 3444397B1
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EP
European Patent Office
Prior art keywords
steam
ironing device
storage container
generating unit
pressure
Prior art date
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Application number
EP18187687.1A
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German (de)
English (en)
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EP3444397A1 (fr
Inventor
Matthias Reich
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.)
Miele und Cie KG
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Miele und Cie KG
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Publication of EP3444397A1 publication Critical patent/EP3444397A1/fr
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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
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
    • 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 invention relates to an ironing device and a method for controlling a heating unit of an ironing device.
  • Such a generic steam generator is in the WO 2011/080026 A2 disclosed.
  • the present invention has for its object to provide an improved ironing device and an improved method for controlling a heating unit of an ironing device.
  • the invention offers the advantage that by combining a steam generator unit with a storage container, for example in the form of a structure in which an inner boiler is arranged in an outer boiler, steam can be made available for immediate ironing after a short heating-up time, while the positive ones Features of a boiler such as high amounts of steam and steam stability with a slight delay are available.
  • the heating remains active during short breaks to change or change the textiles to be ironed, in order to produce additional quantities of steam, which are then buffered and ready for long bursts of steam.
  • only a few additional parts are required for this. Above all, there is no need for additional heating.
  • An ironing device can be understood to mean, for example, a steam iron or a steam ironing station.
  • the steam generating unit can be a water heater or a boiler.
  • a storage tank can be understood as a boiler.
  • the volume of the steam generating unit and the storage container can differ from one another.
  • a coupling valve can be understood to mean, for example, a pressure relief valve which enables the steam to flow in only one direction of flow.
  • An operating pressure can be understood to mean a pressure at which the ironing device can be operated.
  • the shuttle valve can, for example, be a simple mechanical valve with a sliding body for sealing either the first inlet or the second inlet in the sense of a non-exclusive OR link. The shuttle valve can be designed to release either the first input or the second input or both inputs at the same time, depending on a pressure applied to the two inputs.
  • the arrangement of a boiler for steam generation in a boiler enables rapid steam readiness with a high storage volume.
  • the steam generating unit can be arranged at least in sections within the storage container. As a result, the steam in the storage container can be heated by means of the steam generation unit without additional heating.
  • the steam generating unit can have a smaller volume than the storage container. As a result, the time required for the vaporization of the liquid by the steam generation unit can be kept short.
  • the steam generating unit can be designed as a continuous-flow heater, as a further storage container or as a combination of both.
  • the steam can be generated in different ways depending on the requirements.
  • the ironing device can have a control valve downstream of the shuttle valve for changing the steam volume flow.
  • the control valve can be, for example, a shut-off valve. This enables the steam volume flow to be adjusted in a controlled manner to a steam requirement.
  • the coupling valve can advantageously be designed as a spring-loaded check valve. As a result, the coupling valve can be provided particularly inexpensively.
  • the ironing device can also have a heating unit for heating the steam generating unit and a control unit.
  • the control device can be designed to control the heating unit as a function of an internal pressure of the storage container.
  • a control device can be understood to mean an electrical device that processes sensor signals and outputs control and / or data signals as a function thereof.
  • the control device can have an interface that can be designed in terms of hardware and / or software.
  • the interfaces can be part of a so-called system ASIC, for example, which contains a wide variety of functions of the control device.
  • the interfaces are separate, integrated circuits or at least partially consist of discrete components.
  • the interfaces can be software modules which are present, for example, on a microcontroller in addition to other software modules. A robust control of the heating unit can be ensured by this embodiment.
  • the control unit can be designed to switch off the heating unit when the internal pressure of the storage container reaches the operating pressure. This enables efficient and safe operation of the ironing device.
  • the approach presented here creates a method for controlling a heating unit of an ironing device according to one of the above embodiments, the method comprising at least the following step: Outputting a drive signal for driving the heating unit using a pressure signal representing an internal pressure of the storage container.
  • This method can be implemented, for example, in software or hardware or in a mixed form of software and hardware, for example in a control unit.
  • FIG. 1 shows a schematic illustration of a section of an ironing device 100 according to an exemplary embodiment.
  • the ironing device 100 comprises a steam generation unit 102, which can be filled with water via a water inlet 104.
  • a heating unit 106 which is thermally coupled to the steam generation unit 102, is designed to heat the steam generation unit 102 and to cause the water therein to evaporate.
  • the ironing device 100 has a storage container 108 for storing steam generated by the steam generation unit 102.
  • the storage tank 108 is designed as an outer boiler with a significantly larger volume than the steam generation unit 102.
  • the steam generating unit 102 is designed as an inner boiler and is arranged entirely within the storage tank 108.
  • the steam generating unit 102 has a coupling opening 110 opening into the storage container 108, which can be closed via a coupling valve 112, for example a spring-loaded pressure relief valve.
  • the coupling valve 112 is designed to open the coupling opening 110 when an internal pressure of the steam generating unit 102 reaches an operating pressure of the ironing device 100.
  • the operating pressure represents a maximum allowable pressure.
  • An example is in Figure 1 the heating unit 106 is also arranged in the storage container 108, so that the storage unit 108 can also be heated by means of the heating unit 106.
  • the storage container 108 is connected via a first steam line 114 to a first inlet 116 of a shuttle valve 118, which functions as a pressure switch.
  • a second inlet 120 of the shuttle valve 118 is connected to the steam generating unit 102 via a second steam line 121.
  • the shuttle valve 118 has an outlet 122, also called a steam outlet, via which the steam is conducted, for example, to an iron soleplate of the ironing device 100.
  • a sliding body 124 which is displaceable between the two inlets 116, 120 and which is designed to release the first inlet 116 when a pressure present at the second inlet 120 is less than a pressure present at the first inlet 116, or that to release the second input 120 when the pressure present at the first input 116 is lower than the pressure at the second inlet 120, or to release both inlets 116, 120 if the pressure at the first inlet 116 and the pressure at the second inlet 120 are equal.
  • control valve 126 also called a steam valve, which is designed to regulate a steam volume flow emerging from the shuttle valve 118.
  • the shuttle valve 118 is arranged, for example, outside of the storage container 108 and outside of the steam generation unit 102.
  • the heating unit 106 is connected to a control unit 128, which is designed to switch the heating unit 106 on or off depending on an internal pressure of the storage container 108 by outputting a corresponding control signal 130.
  • the control unit 128 receives a pressure signal 132 from a corresponding measuring device of the ironing device 100, which pressure signal represents an internal pressure of the storage container 108 measured by the measuring device.
  • control unit 128 is designed to switch off the heating unit 106 when the evaluation of the pressure signal 132 shows that the internal pressure of the storage container 108 has reached the operating pressure.
  • the ironing device 100 is realized with a boiler-in-boiler structure in which a small amount is first evaporated in the inner, smaller boiler 102 in order to keep the heating-up times short.
  • the inner boiler 102 can also be designed as a water heater. If the steam is not demanded or not demanded in the amount produced, steam is initially generated further via the inner boiler 102 until the maximum pressure is reached. Instead of switching off the heating unit 106, as in conventional devices, the steam generation unit 102 is heated further, the steam reaching the outer boiler 108 via the coupling valve 112. The storage for the amount of steam can thus be increased while the first smaller amounts are already available to the user through the inner boiler 102. Due to the boiler-in-boiler structure, the waste heat from the inner boiler 102 can also be used to reheat the volume of the outer boiler 108 and to keep it at operating temperature without the need for further heating.
  • Figure 2 shows a diagram showing a respective internal pressure curve of the steam generating unit and the storage container when ironing with the ironing device Figure 1 .
  • An example of a state profile with two boilers in the ironing device is shown.
  • a first curve 200 represents the course of the internal pressure of the steam generating unit, here the inner boiler, and a second curve 202 the course of the internal pressure of the storage tank, here the outer boiler.
  • the internal pressure is plotted as boiler pressure P on a y-axis.
  • a horizontal line represents the operating pressure of the ironing device.
  • a time period A the cold ironing device is switched on, so that the ironing device heats up. Since initially only the inner boiler with a small volume is heated, the pressure rises quickly. The curve 200 is correspondingly steep here. At the end of period A, the operating pressure in the inner boiler has been reached and the ironing device is ready for use. The ironing device is therefore ready for operation much faster than if the volume of both boilers had already been heated.
  • Ironing does not start immediately in a period of time B, so that the available heating output is used further, since steam now escapes from the inner to the outer boiler through the pressure relief valve. Due to the large volume of the outer boiler, the pressure rises only slowly, while the nominal operating pressure is maintained in the inner boiler.
  • a time period D the ironing is interrupted.
  • the pressure in the inner boiler is increased again via the heating unit and quickly brought up to the nominal pressure.
  • Figure 3 shows a flow diagram of a method 300 according to an embodiment.
  • the method 300 for controlling a heating unit of an ironing device can, for example, be carried out by a control device, as described above on the basis of Figures 1 and 2nd is described.
  • the pressure signal is initially received in an optional step 310.
  • the control signal for controlling the heating unit is generated and output using the pressure signal.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)

Claims (9)

  1. Appareil de repassage (100) présentant les caractéristiques suivantes :
    une unité de production de vapeur (102) pouvant être remplie d'un liquide pour produire de la vapeur par vaporisation du liquide ;
    un réservoir de stockage (108) destiné à stocker la vapeur produite par l'unité de production de vapeur (102) ;
    caractérisé par
    une soupape de couplage (112) conçue pour coupler fluidiquement l'unité de production de vapeur (102) au réservoir de stockage (108) lorsque la pression interne de l'unité de production de vapeur (102) atteint une pression de fonctionnement ; et
    une soupape à deux voies (118) présentant une première entrée (116) couplée au réservoir de stockage (108), une seconde entrée (120) couplée à l'unité de production de vapeur (102), et une sortie (122) destinée à fournir un débit volumique de vapeur en réponse à une pression appliquée à la première entrée (116) et/ou à la seconde entrée (120).
  2. Appareil de repassage (100) selon la revendication 1, dans lequel l'unité de production de vapeur (102) est disposée au moins par sections à l'intérieur du réservoir de stockage (108) .
  3. Appareil de repassage (100) selon l'une des revendications précédentes, dans lequel l'unité de production de vapeur (102) est d'un volume inférieur à celui du réservoir de stockage (108).
  4. Appareil de repassage (100) selon l'une des revendications précédentes, dans lequel l'unité de production de vapeur (102) est réalisée sous la forme d'un chauffe-eau instantané et/ou d'un autre réservoir de stockage.
  5. Appareil de repassage (100) selon l'une des revendications précédentes, comportant une soupape de commande (126) disposée en aval de la soupape à deux voies (118) pour modifier le débit volumique de vapeur.
  6. Appareil à repasser (100) selon l'une des revendications précédentes, dans lequel la soupape de couplage (112) est réalisée sous la forme d'un clapet anti-retour sollicité par un ressort.
  7. Appareil de repassage (100) selon l'une des revendications précédentes, comprenant une unité de chauffage (106) destinée à chauffer l'unité de production de vapeur (102) et une unité de commande (128) conçue pour commander l'unité de chauffage (106) en réponse à une pression interne du réservoir de stockage (108).
  8. Appareil de repassage (100) selon la revendication 7, dans lequel l'unité de commande (128) est conçue pour désactiver l'unité de chauffage (106) lorsque la pression interne du réservoir de stockage (108) atteint la pression de fonctionnement.
  9. Procédé (300) de commande d'une unité de chauffage (106) d'un appareil de repassage (100) selon la revendication 7 ou 8, le procédé (300) comprenant au moins l'étape suivante :
    émission (320) d'un signal de commande (130) destiné à commander l'unité de chauffage (106) à l'aide d'un signal de pression (132) représentant une pression interne du réservoir de stockage (108).
EP18187687.1A 2017-08-16 2018-08-07 Appareil à repasser et procédé de commande d'une unité de chauffage d'un appareil à repasser Active EP3444397B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017118670.0A DE102017118670A1 (de) 2017-08-16 2017-08-16 Bügelgerät und Verfahren zum Ansteuern einer Heizeinheit eines Bügelgeräts

Publications (2)

Publication Number Publication Date
EP3444397A1 EP3444397A1 (fr) 2019-02-20
EP3444397B1 true EP3444397B1 (fr) 2020-06-03

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EP18187687.1A Active EP3444397B1 (fr) 2017-08-16 2018-08-07 Appareil à repasser et procédé de commande d'une unité de chauffage d'un appareil à repasser

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EP (1) EP3444397B1 (fr)
DE (1) DE102017118670A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020131329A1 (de) 2020-11-26 2022-06-02 Miele & Cie. Kg Dampfbügelvorrichtung und Verfahren zu deren Betrieb

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2912429B1 (fr) * 2007-02-12 2009-03-06 Rowenta Werke Gmbh Appareil de repassage a vapeur comportant un reservoir d'eau en communication directe avec une chambre d'ebullition
EP2516721A2 (fr) * 2009-12-22 2012-10-31 BSH Bosch und Siemens Hausgeräte GmbH Centrale vapeur comportant un moyen de réglage de température

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DE102017118670A1 (de) 2019-02-21
EP3444397A1 (fr) 2019-02-20

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