EP3446046B1 - Kessel - Google Patents

Kessel Download PDF

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Publication number
EP3446046B1
EP3446046B1 EP17720708.1A EP17720708A EP3446046B1 EP 3446046 B1 EP3446046 B1 EP 3446046B1 EP 17720708 A EP17720708 A EP 17720708A EP 3446046 B1 EP3446046 B1 EP 3446046B1
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EP
European Patent Office
Prior art keywords
boiler
container
discharge pipe
cavity
collection cap
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.)
Active
Application number
EP17720708.1A
Other languages
English (en)
French (fr)
Other versions
EP3446046A1 (de
Inventor
Giuseppe De' Longhi
Antonio Lorenzon
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.)
De Longhi Appliances SRL
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De Longhi Appliances SRL
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Publication date
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Publication of EP3446046A1 publication Critical patent/EP3446046A1/de
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Publication of EP3446046B1 publication Critical patent/EP3446046B1/de
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Classifications

    • 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
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • D06F75/12—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water supplied to the iron from an external source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0072—Special adaptations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0092—Devices for preventing or removing corrosion, slime or scale

Definitions

  • the present invention concerns a boiler to generate steam and/or to heat water, usable in domestic appliances and professional machines such as, for example, ironing or cleaning apparatuses, coffee machines, steamers for cooking food, steam ovens and suchlike.
  • Boilers used to selectively generate steam and/or to heat water in domestic appliances and professional machines normally comprise a metal container, hermetically closed, provided with at least an entrance aperture to introduce water inside it, and with an exit aperture, to discharge the water from the container.
  • the boiler also comprises an aperture for the steam to exit.
  • a heating element is normally associated with the metal container, generally an electric resistance or plate, selectively activated to generate the desired quantity of steam and/or to take the water to the desired temperature.
  • Boilers normally also comprise one or more detection devices to detect the temperature and/or pressure inside the metal container, so as to monitor them, both to verify that they reach the desired value and also to prevent them from exceeding determinate threshold values which can damage the metal container and the boiler itself.
  • limescale deposits in correspondence with the heating element, or on the wall that cooperates with the heating element, it reduces its heating effect.
  • the incorrect transmission of heat by the heating element to the water inside the container can therefore entail a waste of energy, requiring higher consumption to heat the water correctly.
  • the devices to detect the temperature and/or pressure are generally installed outside the metal container, the detection is influenced by the presence of limescale deposited inside, in correspondence with the external portion where they are positioned.
  • the minerals that the incrustations of limescale consist of are heat insulating, and therefore they can delay or distort the detection of the temperature and/or pressure inside the metal container.
  • limescale remains in suspension, it could come out of the container through the possible steam exit, occluding the hydraulic circuit through which the steam exits, and/or the devices that regulate it.
  • Document US 5,345,704 describes an iron comprising a compartment for containing the steam, integrated in the iron, connected to a decalcification aperture.
  • the decalcification aperture is provided with a removable collector disposed inside the iron.
  • the limescale is collected inside the removable collector when the iron is positioned on its heel rest, that is, in a vertical position.
  • One purpose of the present invention is to provide a boiler to generate steam and/or to heat water that allows to limit the formation of limescale inside the metal container.
  • Another purpose is to provide a boiler that allows to remove, simply and quickly, the limescale that has formed inside the metal container.
  • Another purpose is to provide a boiler to generate steam and/or to heat water that is simple and economical but at the same time is reliable and long-lasting.
  • Another purpose is to provide a boiler that allows to prevent waste of energy for heating the water inside it.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a boiler to generate steam and/or to heat water comprises a container able to contain water, provided with a feed aperture to introduce water inside it, and a discharge aperture to remove water and possible limescale from the container.
  • the boiler also comprises a steam exit aperture, associated with emission devices to regulate the exit of the steam.
  • a discharge pipe is associated with the metal container, connected and disposed protruding toward the outside with respect to a lateral wall of the metal container in correspondence with the discharge aperture, to facilitate the exit of the water.
  • the discharge pipe is disposed in the lower half of the lateral wall of the metal container and it is at least slightly inclined downward, to facilitate the discharge operations of the water.
  • a collection cap is associated with the discharge pipe during use, configured to collect the limescale present in the water inside the metal container.
  • the collection cap is disposed, during use, protruding and completely outside with respect to the container and has inside it a cavity suitable to house and retain the limescale.
  • limescale retaining elements can be provided inside the cavity such as pads, metal meshes or suchlike.
  • Embodiments described here with reference to figs. 1-2 concern a boiler 10 to generate steam and/or for heating water, usable in domestic appliances and professional machines such as, for example, ironing or cleaning apparatuses, coffee machines, steamers for cooking food, steam ovens and suchlike.
  • the boiler 10 comprises a metal container 12 able to contain the water to be transformed into steam, hermetically closed and provided with a feed aperture 14 to introduce the water inside it.
  • the container 12 comprises a first shell 12a and a second shell 12b, coupled and hermetically sealed with each other along the respective peripheral edges, so as to resist the pressure generated inside the container 12.
  • the container 12 is also provided with a discharge aperture 22 to discharge the water and/or possible limescale present in the container 12.
  • the discharge aperture 22 is disposed in cooperation with the bottom of the container 12, or in proximity to it, so as to facilitate the operations to discharge the water and to empty the container 12.
  • the container 12 can also be provided with a steam exit aperture connected to devices to emit and regulate the steam 16.
  • the boiler 10 also comprises a heating element 18 associated with the container 12, selectively activated to heat the water inside it.
  • the heating element 18 can be an electric resistance or plate, positioned outside the container 12, in contact with the bottom or inside it, in direct contact with the water to be heated.
  • the boiler 10 can also comprise one or more detection devices 20 configured to detect the temperature and/or pressure inside the container 12, disposed on an external surface 24 of the container 12.
  • a discharge pipe 26 is also provided, connected to the discharge aperture 22 and disposed protruding toward the outside with respect to a lateral wall 13 of the container 12.
  • the discharge pipe 26 is provided in the lower part of the lateral wall 13, and is inclined downward, with the container 12 located in a horizontal position, to promote the discharge of the water from the container 12.
  • the discharge pipe 26 is connected to the container 12 by screwing, providing a mating thread, suitable for reciprocal coupling, on the respective contact surfaces of the discharge aperture 22 and the discharge pipe 26.
  • the discharge pipe 26 is connected to the container 12 by welding, so as to make the two parts solid with each other.
  • the boiler comprises a collection cap 30, associated during use with the discharge pipe 26 and configured to close the discharge pipe 26 and collect the limescale from the water present inside the container 12.
  • the collection cap 30 is constantly wet by the water inside the container 12, which promotes the accumulation inside it of limescale.
  • the collection cap 30 and the discharge pipe 26 are provided with respective threaded portions 34, 28 to allow a reciprocal coupling that can be released by screwing.
  • the collection cap 30, during use, is disposed completely protruding and external with respect to the container 12, and inside it has a cavity 38, suitable to house and retain the limescale.
  • the cavity 38 is cylindrical in shape, or has a polygonal section, defined by one or more lateral walls 38a and a bottom wall 38b.
  • the cavity 38 extends continuously with the discharge aperture 22 and the discharge pipe 26, and can receive the liquid present in the container 12.
  • the cavity 38 has an internal volume suitable to contain at least 5 ml of fluid.
  • the cavity 38 has an internal volume suitable to contain at least 7 ml of fluid.
  • the cavity 38 has an internal volume suitable to contain at least 10 ml of fluid. In this way, the maintenance operations on the boiler 10, in particular those to remove the limescale, can be performed less frequently, while still guaranteeing that the boiler 10 functions efficiently.
  • the collection cap 30 comprises a collection body 32, in which the cavity 38 is made.
  • the collection body 32 comprises the threaded portion 34, mating with the threaded portion 28 provided on the external surface of the discharge pipe 26.
  • the collection body 32 can be made of metal material, or heat-resistant plastic material, that is, which does not tend to deform at the temperatures that can be reached by the container 12 or by the water and/or steam inside it.
  • the collection cap 30 also comprises a grip 36, solid with the collection body 32 and conformed to facilitate gripping by the user to screw/unscrew the collection cap 30 with respect to the discharge pipe 26.
  • the grip 36 can have, on an external surface, protrusions and/or protuberances that function as friction elements and thus facilitate gripping by a user.
  • the collection cap 30 can be removed simply and quickly by a user to discharge the water from the container 12, simply by unscrewing it from the discharge pipe 26. Its configuration also allows to display the level of limescale present therein, and to eliminate it easily, emptying the cavity 38.
  • the container 12 and/or the discharge pipe 26 can be conformed so that the collection cap 30 has a downward inclination.
  • a sealing element 42 is provided, configured to guarantee the hydraulic seal between them, preventing possible leakages of water to the outside.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Textile Engineering (AREA)
  • Cookers (AREA)

Claims (7)

  1. Kessel zur Erzeugung von Dampf und/oder zum Erhitzen von Wasser, umfassend einen Metallbehälter (12), der hermetisch verschlossen und mit mindestens einer Zuführöffnung (14) zum Einführen von Wasser in sein Inneres versehen ist, wobei der Kessel ein Heizelement (18) umfasst, das mit dem Behälter (12) verbunden ist, wobei der Behälter (12) einen ersten Mantel (12a) und einen zweiten Mantel (12b) umfasst, die entlang der jeweiligen Umfangskanten miteinander verbunden und hermetisch abgedichtet sind, wobei der Kessel eine Wasserauslassöffnung (22) und eine mit der Wasserauslassöffnung (22) verbundene Auslassleitung (26) umfasst, wobei die Auslassöffnung (22) in Übereinstimmung mit dem Boden des Behälters (12) oder in der Nähe dazu angeordnet ist, wobei die Auslassleitung (26) im unteren Teil einer Seitenwand (13) des Behälters (12) angeordnet ist, bei Vorliegen des Behälters (12) in einer horizontalen Position nach unten geneigt ist und in Bezug auf die Seitenwand (13) zur Außenseite hin vorsteht, wobei der Kessel außerdem eine Auffangkappe (30) umfasst, die während des Gebrauchs mit der Auslassleitung (26) verbunden ist, wobei die Auffangkappe (30) während des Gebrauchs vollständig außerhalb des Behälters (12) angeordnet ist und von diesem vorsteht, wobei die Auffangkappe (30) innen mit einem Hohlraum (38) versehen ist, der so konfiguriert ist, dass er die Kalkablagerungen in seinem Inneren aufnimmt und zurückhält.
  2. Kessel gemäß Anspruch 1, dadurch gekennzeichnet, dass sich der Hohlraum (38) kontinuierlich mit der Auslassöffnung (22) und der Auslassleitung (26) erstreckt.
  3. Kessel gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hohlraum (38) ein Innenvolumen aufweist, das geeignet ist, mindestens 7 ml Flüssigkeit aufzunehmen.
  4. Kessel gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hohlraum (38) ein Innenvolumen aufweist, das geeignet ist, mindestens 10 ml Flüssigkeit aufzunehmen.
  5. Kessel gemäß irgendeinem vorhergehenden Anspruch, dadurch gekennzeichnet, dass im Inneren des Hohlraums (38) Kalkablagerungen zurückhaltende Element (40), wie zum Beispiel Pads, Metallgitter oder dergleichen, vorliegen, die die Funktion haben, die Ansammlung von Kalkablagerungen innerhalb der Auffangkappe (30) zu katalysieren und/oder zu verbessern.
  6. Kessel gemäß irgendeinem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Behälter (12) und/oder die Auslassleitung (26) so angepasst sind, dass die Auffangkappe (30) nach unten geneigt ist.
  7. Kessel gemäß irgendeinem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Auffangkappe (30) und die Auslassleitung (26) mit jeweiligen Gewindeabschnitten (28, 34) versehen sind, um eine wechselseitige freigebbare Verbindung durch Verschrauben zu ermöglichen.
EP17720708.1A 2016-04-21 2017-04-19 Kessel Active EP3446046B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A002801A ITUA20162801A1 (it) 2016-04-21 2016-04-21 Caldaia
PCT/EP2017/059310 WO2017182534A1 (en) 2016-04-21 2017-04-19 Boiler

Publications (2)

Publication Number Publication Date
EP3446046A1 EP3446046A1 (de) 2019-02-27
EP3446046B1 true EP3446046B1 (de) 2021-06-02

Family

ID=56740333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17720708.1A Active EP3446046B1 (de) 2016-04-21 2017-04-19 Kessel

Country Status (5)

Country Link
EP (1) EP3446046B1 (de)
CN (1) CN109312955B (de)
ES (1) ES2885098T3 (de)
IT (1) ITUA20162801A1 (de)
WO (1) WO2017182534A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3072103B1 (fr) * 2017-10-05 2019-09-20 Seb S.A. Appareil electromenager comprenant une base comportant une chambre d’ebullition alimentee par gravite

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Publication number Priority date Publication date Assignee Title
DE3729800A1 (de) * 1987-09-05 1989-03-16 Krups Stiftung Elektrisch betriebenes dampfbuegeleisen
CN1047638C (zh) * 1992-05-15 1999-12-22 莫利奈克斯公司 蒸气电熨斗
FR2691176B1 (fr) * 1992-05-15 1995-09-08 Moulinex Sa Fer a repasser electrique a vapeur.
DE4440244A1 (de) * 1994-11-11 1996-05-15 Braun Ag Dampfbügeleisen
DE59902221D1 (de) * 1998-09-22 2002-09-05 Axair Ag Pfaeffikon Dampferzeuger mit mindestens teilweise doppelwandigem verdampfungsgefäss
DE10109251C1 (de) * 2001-02-26 2002-08-08 Rational Ag Dampferzeuger, insbesondere für ein Gargerät
FR2904683B1 (fr) * 2006-08-03 2008-10-24 Seb Sa Appreil electromenager comportant une cuve dans laquelle de l'eau est portee a ebullition et des moyens pour evacuer le tartre
FR2906543B1 (fr) * 2006-10-02 2008-11-07 Seb Sa Fer a repasser comportant un dispositif guide cordon perfectionne.
WO2012011026A2 (en) * 2010-07-22 2012-01-26 Koninklijke Philips Electronics N.V. Prevention or reduction of scaling on a heater element of a water heater
ES2391679B1 (es) * 2010-11-12 2013-11-22 Bsh Electrodomésticos España, S.A. Aparato doméstico, en especial, plancha a vapor.
CN105408687B (zh) * 2013-07-25 2018-04-27 皇家飞利浦有限公司 用于生成蒸汽的装置
FR3010420B1 (fr) * 2013-09-10 2015-09-25 Seb Sa Appareil electromenager de repassage comportant un filtre destine a retenir des particules de tartre transportees par la vapeur
FR3022920B1 (fr) * 2014-06-27 2016-07-01 Seb Sa Appareil electromenager de repassage comportant une cuve pour la generation de vapeur sous pression munie d'un orifice de vidange

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN109312955B (zh) 2021-08-10
WO2017182534A1 (en) 2017-10-26
ES2885098T3 (es) 2021-12-13
CN109312955A (zh) 2019-02-05
ITUA20162801A1 (it) 2017-10-21
EP3446046A1 (de) 2019-02-27

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