EP2373843B1 - Appareil de repassage comportant une pompe piezoelectrique - Google Patents

Appareil de repassage comportant une pompe piezoelectrique Download PDF

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Publication number
EP2373843B1
EP2373843B1 EP09774721A EP09774721A EP2373843B1 EP 2373843 B1 EP2373843 B1 EP 2373843B1 EP 09774721 A EP09774721 A EP 09774721A EP 09774721 A EP09774721 A EP 09774721A EP 2373843 B1 EP2373843 B1 EP 2373843B1
Authority
EP
European Patent Office
Prior art keywords
pump
pumping chamber
outlet
inlet
ironing appliance
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.)
Not-in-force
Application number
EP09774721A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2373843A1 (fr
Inventor
Andrea Lukas
Björn SCHEVE
Matthias Hahn
Franck Mandica
Dominique Gelus
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.)
Rowenta Werke GmbH
Original Assignee
Rowenta Werke 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 Rowenta Werke GmbH filed Critical Rowenta Werke GmbH
Priority to PL09774721T priority Critical patent/PL2373843T3/pl
Publication of EP2373843A1 publication Critical patent/EP2373843A1/fr
Application granted granted Critical
Publication of EP2373843B1 publication Critical patent/EP2373843B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to an ironing apparatus comprising a pump comprising a pumping chamber provided with an inlet orifice and an outlet orifice, the pumping chamber comprising a movable wall moving under the action of a piezoelectric actuator for moving the diaphragm to draw fluid through the inlet and then push it back through the outlet.
  • an iron comprising a piezoelectric pump supplying a vaporization chamber with water from a tank.
  • the piezoelectric pump is arranged vertically and comprises a pumping chamber comprising an inlet orifice and an outlet orifice arranged vertically one above the other, the outlet orifice being disposed below the inlet port.
  • such a piezoelectric pump has the disadvantage of not allowing rapid and easy evacuation of air bubbles introduced into the pumping chamber, for example during a vacuum operation of the pump in the absence of water in the tank.
  • the air bubbles tend to get stuck in the upper part of the pumping chamber and can not be evacuated.
  • a piezoelectric pump has the disadvantage of having a movable wall having only a very small clearance so that the performance of the pump is greatly degraded when bubbles are in the pumping chamber.
  • an object of the present invention is to overcome these disadvantages by providing an ironing apparatus in which the piezoelectric pump is arranged so as to promote the evacuation of any air bubbles present in the pumping chamber and thus obtain good performance of the pump, even after no-load operation.
  • the subject of the invention is an ironing apparatus comprising a pump comprising a pumping chamber provided with an inlet orifice and an outlet orifice, the pumping chamber comprising a movable wall comprising an external face. in contact with a piezoelectric actuator intended to move the movable wall by modifying the volume of the pumping chamber under the action of the piezoelectric actuator, characterized in that the pump is arranged in the ironing apparatus so that the outlet port of the pumping chamber is at a higher level than the inlet port in a normal operating position of the apparatus.
  • normal operating position of the device is meant a position of the device corresponding to a usual and preferred use of the device.
  • the normal operating position corresponds to the position in which the iron rests on its sole.
  • the pump comprises a support comprising the inlet and outlet orifices of the pumping chamber and the movable wall of the pumping chamber is oriented vertically.
  • the inlet orifice and the outlet orifice pass through the support, the latter having an inner face to the pumping chamber comprising a groove extending between the inlet orifice. and the outlet port.
  • the pumping chamber has a circular shape, the inlet opening opening near the center of the pumping chamber and the outlet orifice being disposed near the periphery of the pumping chamber. pumping chamber.
  • the pump comprises a film sandwiched between the support and a base, the latter comprising an intake duct and a discharge duct respectively in communication with the inlet orifice and the outlet orifice of the pumping chamber, the film comprising valves facing the inlet and outlet ports.
  • the film is made of silicone material, the valves being made by performing a cut in the form of a circular arc in the film.
  • the arcuate cutting extends over an angle of less than 180 °.
  • the apparatus is an iron comprising a reservoir and a vaporization chamber fed with water from the reservoir by means of the pump.
  • the pump is connected to a water accumulation tower disposed downstream of the pump.
  • a drip plug is interposed between the water accumulation tower and the vaporization chamber.
  • the pump is disposed vertically at the rear of the iron, outside the tank.
  • the pump is disposed at the bottom of the tank.
  • the figure 1 represents an iron with an ironing soleplate 1 surmounted by a body provided with a handle 2, the body enclosing a reservoir 3 of water and a piezoelectric pump 100 fed by the reservoir 3 whose operation is controlled by means of a control trigger, not visible in the figures, arranged under the handle 2.
  • the sole 1 of the iron is in thermal contact with a heating body 10 which integrates, in a manner known per se, a vaporization chamber 11 for the production of steam, the vaporization chamber 11 being closed by a cover 12 and being connected to a steam distribution circuit comprising steam outlet holes formed in the sole 1.
  • the heating body 10 is surmounted by a heat shield 4 comprising a central portion 40 defining the bottom of the tank 3 and a peripheral portion constituting a protective skirt 41 extending under the bottom of the tank 3 by marrying the contour of the sole 1 so as to laterally border the heating body 10.
  • the central portion 40 of the heat shield 4 is bordered by a groove 42 in which is engaged a wall, not visible in the figures, defining the upper part of the tank 3, this wall being carried by an upper box element 5
  • a groove 42 in which is engaged a wall, not visible in the figures, defining the upper part of the tank 3, this wall being carried by an upper box element 5
  • Such an assembly of a two-part reservoir is, for example, described more specifically in the patent application. FR 2,770,856 filed by the plaintiff.
  • the upper case member 5 comprises the handle 2 for gripping the iron and supports a cord guide device 6 for orienting the power cord of the iron.
  • the box element 5 also comprises a hatch 7 for access to a filling orifice of the tank 3, a button 8 of setting a thermostat associated with the heating body 10 and buttons 51, 52 respectively allowing the actuation of manual pumps for the emission of a water spray from a nozzle 53 disposed on the front face of the iron or the momentary sending of a volume of water into the vaporization chamber 11 for the creation of a surplus of steam.
  • the heat shield 4 comprises a rear portion supporting the piezoelectric pump 100, the latter being disposed outside the tank 3, substantially at the height of the bottom of the tank, and comprising an intake duct 131 and a discharge pipe 132 respectively connected to a first sleeve 91 and a second sleeve 92 for connecting a rubber gland 9 through a rear wall of the reservoir 3.
  • the first connecting sleeve 91 is connected to a tube 13 extending close to the bottom of the tank, this tube 13 enclosing a filter making it possible to prevent limestone particles from being sucked through
  • the second sleeve 92 is connected to a duct 14 extending along the tank 3 and having an end 14A opening vertically in the front part of the heat shield 4, at the bottom of the tank.
  • a bowl 15 carried by the upper end of a water accumulation tower 16, the bowl 15 being open at its upper end so as to form a weir for the return of an overflow of water to the tank 3.
  • the water accumulation tower 16 extends vertically to a height such that the bottom of the bowl 15 is approximately 4 cm above the level of the bottom of the tank 3, the bowl 15 having an orifice 15A in communication with a feeding circuit of a drip-shaped plug 17 disposed in the front part of the iron and opening classically above the vaporization chamber 11.
  • the water sent by the pump 100 to the bowl 15 can then flow by gravity through the orifice 15A in the accumulation tower 16 of water so as to feed the plug drop-in drop 17 for the production of steam.
  • the use of such an accumulation tower water 16 has the advantage of allowing to obtain a constant water column height upstream of the drip tray 17 for the production of a high steam flow, of the order of 40 to 50 g / min, whatever the level of filling of the tank 3.
  • the flow rate of the piezoelectric pump 100 is intended to be greater than the flow rate required for the steam production of 50 g / min so that the production of steam is not limited by the flow rate of the pump 100, the excess water sent by the pump 100 to the accumulation tower 16 flowing into the reservoir through the upper opening of the bowl 15.
  • the average flow rate of the bioelectric pump illustrated in FIGS. of the order of 100 ml / min.
  • the opening of the drip plug 17 is controlled automatically, by a mechanical control system not shown in the figures, as a function of the temperature of the thermostat of the heating body 10, so that the quantity of steam produced by the iron is automatically adjusted according to the temperature, or the type of textile, selected by the user by means of the button 8.
  • the Figures 4 to 6 illustrate in detail the piezoelectric pump fitted to the iron of Figures 1 to 3 .
  • the piezoelectric pump 100 comprises a pumping chamber 110 defined by a support 101 and a movable wall 111 disposed opposite, the support 101 having a circular central zone lined with a groove 112 receiving a gasket. sealing 113 on which rests the movable wall 111.
  • the movable wall is advantageously constituted by a brass membrane 111 having an outer face, facing outwardly of the pumping chamber 110, on which is fixed a piezoelectric actuator 111A ceramic .
  • Maintaining the membrane 111 against the seal 113 is made by means of a cover 102 attached to the support 101, the cover 102 having a circular rib 120 projecting against the face external of the membrane 111, opposite the seal 113.
  • the support 101 also receives a base 103 opposite the cover 102, this base 103 supporting the intake ducts 131 and discharge 132 of the pump.
  • the support 101, the cover 102 and the base 103 are made of a plastic material reinforced with glass fibers, such as a polyarylamide loaded with 30% glass fibers and are kept under stress against each other. the other by means of an elastic clip 104 having the shape of a metal strip with spring effect engaging between guide ribs 123, 134 formed respectively at the periphery of the cover 102 and the base 103.
  • the cover 102 comprises supply terminals 121, 122 which are electrically connected to the membrane 111 and to the piezoelectric actuator 111A, and which are fed, in a manner known per se, by an alternating electrical voltage causing a periodic deformation of the piezoelectric actuator 111A and the flexible membrane 111 in the direction of the increase and then the reduction of the volume of the pumping chamber 110.
  • a piezoelectric actuator supply circuit is for example described in the patent application. FR 08 01706 .
  • the lower face of the membrane 111 is covered with an insulating film 111B constituted by three films in polyester held together by means of an adhesive, as more specifically described in the patent application FR 08 03520 .
  • the intake ducts 131 and delivery ducts 132 open respectively facing an inlet orifice 114 and an outlet orifice 115 passing through the support 101, the pump 100 being arranged vertically in the so that the outlet port 115 of the pumping chamber 110 is placed above the level of the inlet port 114 when the iron is in a current operating position, i.e. to say lies on its sole 1.
  • the inlet orifice 114 is disposed substantially in the center of the pumping chamber 110 so as to be opposite the maximum deflection zone of the diaphragm 111, where the depression is the largest.
  • the outlet orifice 115 is in turn preferably disposed near the periphery of the pumping chamber 110, the pump 100 being placed vertically in the iron so that the outlet orifice 115 is substantially at the top of the pumping chamber 110 when the iron rests flat on its sole 1.
  • the dead volume of the pumping chamber 110 is reduced essentially to a groove 116, with a depth of about 1 mm, extending between the inlet and outlet openings 114 on the face of the support 101 opposite the cover 102, this groove 116 for channeling the air bubbles towards the outlet orifice.
  • the correct positioning of the cover 102 and the base 103 on the support 101 is provided by means of three centering tabs 117 carried by the support 101, these centering tabs 117 cooperating with the periphery of the cover 102 and with notches 103B at the periphery of the base 103.
  • a silicone film 105 is interposed between the support 101 and the base 103 to make valves 151, 152 facing the inlet orifice 114 and the outlet orifice 115, the positioning of the film 105 on the base 103 being provided by means of notches 150 formed at the periphery of the film, these notches 150 engaging around bosses 130 carried by the base 103.
  • the valve 152 facing the outlet orifice 115 is formed by means of a cutout 152A in the form of a circular arc forming a flexible cover facing a recess 133 formed in the circular base 103 , the valve 152 opening in the recess 133 when water is compressed in the pumping chamber 110 and closing when the piezoelectric actuator 111 A deforms in the direction of increasing the volume of the pumping chamber 110.
  • Such a construction combined with the presence of the accumulation tower water 16 downstream of the pump 100 has the advantage of allowing very simply the creation of a non-return valve, the presence of water in the conduit 14 creating a pressure downstream of the valve 152 generating a restoring force , depending on the height of the water column, tending to keep the valve 152 closed.
  • Such a characteristic is particularly interesting because it allows, when the pump 100 is stopped, to prevent the water downstream of the valve 152 from flowing by gravity through the pump 100 and the tank 3.
  • the valve 151 facing the inlet orifice 114 is also made by means of a cut 151A in the form of a circular arc forming a flexible cover facing a circular recess 118 formed in the support 101, the valve 151 is closing when the water in the pumping chamber 110 is compressed by the membrane 111 and opening when the piezoelectric actuator 111A deforms in the direction of increasing the volume of the pumping chamber 110.
  • the vertical position of the pump 100 in the iron, with the outlet orifice 115 disposed above the inlet orifice 114, has the advantage of allowing the formation of a column of water downstream of the valve 152. thus creating a pressure generating a restoring force tending to keep the valve 152 closed. Such a feature allows without using a return spring, to keep closed the valve 152 when the pump 100 is stopped.
  • the cutouts 151 A, 152A in the form of a circular arc extend angularly less than 180 ° and are oriented in the same direction so that a large strip of material extends between the cutouts 151A. , 152A.
  • Such a characteristic makes it possible to obtain a good stability of the film 105 at the edges of the cuts 151A, 152A by reducing in particular the risk of deformation of the valves 151, 152 in the direction of opening during the compression of the film 105 between the support 101 and the base 103.
  • the iron thus produced has the advantage of having a powerful piezoelectric pump capable of eliminating any air bubbles that can penetrate into the pumping chamber, the air bubbles naturally tend to be driven upwards. direction of the outlet orifice by the water coming from the reservoir. We thus obtain an iron allowing produce a large amount of steam for high ironing efficiency and having stable performance over time.
  • the shape of the pumping chamber or the assembly means of the pump elements can be modified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Irons (AREA)
EP09774721A 2008-12-11 2009-11-30 Appareil de repassage comportant une pompe piezoelectrique Not-in-force EP2373843B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09774721T PL2373843T3 (pl) 2008-12-11 2009-11-30 Urządzenie do prasowania zawierające piezoelektryczną pompę

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0806960A FR2939809B1 (fr) 2008-12-11 2008-12-11 Appareil de repassage comportant une pompe piezoelectrique
PCT/IB2009/007608 WO2010067158A1 (fr) 2008-12-11 2009-11-30 Appareil de repassage comportant une pompe piezoelectrique

Publications (2)

Publication Number Publication Date
EP2373843A1 EP2373843A1 (fr) 2011-10-12
EP2373843B1 true EP2373843B1 (fr) 2013-01-16

Family

ID=40887103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09774721A Not-in-force EP2373843B1 (fr) 2008-12-11 2009-11-30 Appareil de repassage comportant une pompe piezoelectrique

Country Status (8)

Country Link
US (1) US8484869B2 (es)
EP (1) EP2373843B1 (es)
CN (1) CN102224290B (es)
ES (1) ES2400043T3 (es)
FR (1) FR2939809B1 (es)
PL (1) PL2373843T3 (es)
PT (1) PT2373843E (es)
WO (1) WO2010067158A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI618858B (zh) * 2017-02-24 2018-03-21 研能科技股份有限公司 流體輸送裝置
CN110106684B (zh) * 2019-05-23 2021-11-05 卓力电器集团有限公司 一种电熨斗智能控制系统
JP7460346B2 (ja) 2019-10-01 2024-04-02 東芝ホームテクノ株式会社 スチーマー
FR3128962A1 (fr) * 2021-11-09 2023-05-12 Seb S.A. Centrale vapeur sans fil permettant d’obtenir des débits de vapeur suffisant pour réaliser un repassage rapide

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB516559A (en) * 1939-02-10 1940-01-04 Agatino Tricomi Improvements in electric steam iron
US2770896A (en) * 1954-07-19 1956-11-20 Gen Mills Inc Spray flatiron
JPS62142597A (ja) * 1985-12-17 1987-06-25 松下電器産業株式会社 スチ−ムアイロン
DE4304238A1 (de) * 1993-02-12 1994-08-18 Braun Ag Elektrisch angetriebene Pumpe zur Wasserförderung in Haushaltsgeräten
JPH09510904A (ja) * 1995-01-23 1997-11-04 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ スチーム発生を制御する生地温度センサを有するスチームアイロン
CN1165549A (zh) * 1995-09-20 1997-11-19 菲利浦电子有限公司 泵以及该泵的制造方法
DE19749573B4 (de) 1997-11-10 2005-07-28 Rowenta Werke Gmbh Dampfbügeleisen
CN2558681Y (zh) * 2002-04-11 2003-07-02 优柏国际公司 使锅炉快速产生蒸汽的熨烫装置
AU2003281583A1 (en) * 2002-07-24 2004-02-09 Koninklijke Philips Electronics N.V. Iron with fabric contact detector
US6896193B2 (en) * 2002-11-26 2005-05-24 S.C. Johnson & Son, Inc. Atomizer with improved wire type atomizing element support and method of making same
CN100591836C (zh) * 2004-03-29 2010-02-24 皇家飞利浦电子股份有限公司 具有用于在蒸汽流中获得涡流的涡流生成元件的蒸汽熨烫设备
JP2008175097A (ja) * 2007-01-17 2008-07-31 Alps Electric Co Ltd 圧電ポンプ
JP4976157B2 (ja) * 2007-02-16 2012-07-18 アルプス電気株式会社 圧電ポンプ及び圧電振動子
FR2932822B1 (fr) * 2008-06-24 2010-08-20 Seb Sa Appareil electromenager comportant une pompe piezoelectrique

Also Published As

Publication number Publication date
PL2373843T3 (pl) 2013-06-28
EP2373843A1 (fr) 2011-10-12
CN102224290B (zh) 2013-01-09
US20110296723A1 (en) 2011-12-08
US8484869B2 (en) 2013-07-16
CN102224290A (zh) 2011-10-19
PT2373843E (pt) 2013-03-04
FR2939809B1 (fr) 2011-01-14
FR2939809A1 (fr) 2010-06-18
WO2010067158A1 (fr) 2010-06-17
ES2400043T3 (es) 2013-04-05

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