EP2364402A1 - Piezoelektrische pumpe für ein elektrisches haushaltsgerät - Google Patents

Piezoelektrische pumpe für ein elektrisches haushaltsgerät

Info

Publication number
EP2364402A1
EP2364402A1 EP09774720A EP09774720A EP2364402A1 EP 2364402 A1 EP2364402 A1 EP 2364402A1 EP 09774720 A EP09774720 A EP 09774720A EP 09774720 A EP09774720 A EP 09774720A EP 2364402 A1 EP2364402 A1 EP 2364402A1
Authority
EP
European Patent Office
Prior art keywords
piezoelectric pump
movable wall
elastic clip
pump
piezoelectric
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
EP09774720A
Other languages
English (en)
French (fr)
Other versions
EP2364402B1 (de
Inventor
Andrea Lukas
Björn SCHEVE
Matthias Hahn
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
Publication of EP2364402A1 publication Critical patent/EP2364402A1/de
Application granted granted Critical
Publication of EP2364402B1 publication Critical patent/EP2364402B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F04B43/043—Micropumps
    • F04B43/046—Micropumps with piezoelectric drive
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/003—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by piezoelectric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09—Pumps having electric drive
    • F04B43/095—Piezoelectric drive

Definitions

  • the elastic clip is supported on the second and third elements.
  • the invention also relates to an iron having means for supplying water to a spray nozzle or a vaporization chamber, characterized in that the supply means comprise a piezoelectric pump as previously described.
  • FIG. 1 is a schematic sectional view of an iron equipped with a pump according to a first embodiment of the invention
  • FIG. 2 is a sectional view of the piezoelectric pump of the apparatus of FIG. 1;
  • FIGS. 3 and 4 are exploded perspective views of the piezoelectric pump of FIG. 2, seen from above and from below;
  • Figure 5 is a perspective view of the pump of Figure 2 assembled
  • FIG. 6 is a sectional view of a pump according to a second embodiment of the invention
  • FIG. 7 is an exploded perspective view of the pump of FIG. 6;
  • FIG. 8 and 9 are perspective views of the pump of Figure 6 assembled.
  • FIG. 1 schematically represents an iron 100 comprising a heating soleplate 104 comprising a vaporization chamber 103 supplied with water by a piezoelectric pump 101 connected to a reservoir 102.
  • the piezoelectric pump 101 shown in isolation in FIGS. 2 to 4, comprises a first housing element constituted by a support 1 made of a glass fiber reinforced plastic material, such as a polyarylamide loaded with 30% glass fibers.
  • the support 1 has a circular central zone 1A defining, with a movable wall 4 disposed opposite, a pumping chamber 5, the movable wall advantageously being constituted by a brass membrane 4 having an outer face facing towards the outside. outside of the pumping chamber 5, on which is fixed a piezoelectric actuator 41 made of ceramic.
  • the support 1 is sandwiched between a second and a third housing element, made of the same material as that used for the support 1, these second and third housing elements being respectively constituted by a cover 2 comprising terminals 23, 24 for the power supply of the piezoelectric actuator 41 and a base 3 for the circulation of the fluid in the pumping chamber 5.
  • the terminals 23 and 24 are respectively in contact with a spring 23A coming into contact with the membrane 4 and a spring 24A coming into contact with the piezoelectric actuator 41, and are powered by an alternating electrical voltage causing a periodic deformation of the piezoelectric actuator 41 in the direction of the increase and then the reduction of the volume of the pumping chamber 5.
  • the lower face of the membrane 4 is covered with an insulating film 4A consisting of three layers of material polyester adhered to one another by means of an adhesive, according to the solution described in the patent application FR 08 03520.
  • the inlet and outlet orifices 12 and 12 are advantageously interconnected by a groove 13, of a depth of the order of 1 mm, extending on the upper face of the support 1 and defining a dead volume in the chamber pumping 5.
  • the positioning of the cover 2 with respect to the support 1 is carried out by means of three positioning pins 15B projecting from the upper end of the centering sleeve 15 of the support 1, these three pins 15B coming from engage in cavities 20A adapted from the underside of the cover 2, one of the pins 15B having a greater width to allow the engagement of the cover 2 on the support 1 in a single orientation.
  • the positioning of the base 3 on the support 1 is in turn realized by means of bosses 30 carried by the upper face of the base 3 and coming into fit cavities 10 present on the lower face of the support 1, one of the bosses 10 having a larger size to allow the engagement of the base 3 on the support 1 in a single orientation.
  • the clip 9 has the general shape of a U whose ends curved inwardly form hooks 91 that hook under the base 3, the clip 9 having a central portion 90 exerting pressure on an entire area 2A central of the cover 2, generating a force in the axis of the circular rib 21 bearing on the periphery of the membrane 4.
  • the cover 2 and the base 3 comprise guide ribs 25, 35 on their periphery, these guide ribs 25, 35 delimiting a track in which is engaged the spring clip 9 to ensure a correct positioning of the clip 9.
  • the central zone 2A of the lid has a reinforced rigidity so that the pressure exerted by the staple 9 does not cause the bending of the lid 2 but is integrally transmitted, through the circular rib 21, to the periphery of the membrane 4.
  • the cover 2 has a concave lower face in the central zone 2A delimited by the circular rib 21, the cover 2 having a thickness of about 1.4 mm at its center and a thickness of about 2 mm near the circular rib 21.
  • a pump provided with such a fastening clip also has the advantage of being quickly assembled or disassembled, in particular for its maintenance.
  • FIGS. 6 to 9 illustrate a piezoelectric pump 200 according to a second particular embodiment of the invention in which the electrical insulation of the pump, and in particular the insulation of the hydraulic part with respect to the part subjected to an electrical potential. , has been improved.
  • the pump 200 comprises a support 201 made of glass fiber-filled plastic material having a circular central zone defining, with a brass circular membrane 204 attached to it, a pumping chamber 205.
  • the support 201 is sandwiched between a cover 202, having terminals 223, 224 for the power supply of a piezoelectric actuator 241 fixed on the membrane 204, and a base 203 for the circulation of the fluid in the pumping chamber 205 .
  • the hydraulic connection of the pump 201 is carried out by means of an intake duct 231 and a discharge duct 232 carried by the base 203, these inlet ducts 231 and discharge pipes 232 opening respectively opposite an inlet orifice 211 and an outlet orifice 212 passing through the support 201.
  • the pumping chamber 205 is delimited laterally by an annular seal 206, similar to the seal 6 described for the first embodiment.
  • the seal 206 is disposed in a circular groove 214 formed on the upper face of the support 201, at the edge of the pumping chamber 205, and on which the periphery of the membrane 204 rests, the latter having a slightly larger diameter. to the diameter of the seal 206.
  • the cover 202 extends radially beyond the rib 221 by a wall 220 having successively a second rib 226 and a peripheral skirt 222 extending coaxially towards the support 201.
  • the second rib 226 and the peripheral skirt 222 each comprise a annular lower end on which is glued the peripheral edge of the insulating film 204A so that water can not come into contact with the upper part of the membrane 204 in the event of a leak at the seal 206.
  • the support 201 comprises three centering lugs 215, arranged at 120 ° from each other, projecting radially outwards, these centering lugs 215 having a bent end between which the periphery of the cover 202 to ensure the centering of the cover 202 on the support 201.
  • One of the centering tabs 215 advantageously has a larger width and engages in a groove 222A formed at the periphery of the cover 202 to allow engagement of the cover 202 on the support 201 in a single orientation.
  • the angular positioning of the base 203 on the support 201 is advantageously achieved by inserting the centering tabs 215 into suitable notches 234 present on the peripheral edge of the base 203.
  • the film 208 has a cutout 282 in the form of a circular arc forming a valve facing the outlet orifice 212 which opens when water is compressed in the pumping chamber 205 and closes when the actuator piezoelectric 241 deforms in the direction of increasing the volume of the pumping chamber 205.
  • the film 208 also comprises a cut 281 in the form of a circular arc facing the inlet orifice 211 of the support 201 forming a valve that closes when the water in the pumping chamber is compressed by the membrane 204 and opens when the piezoelectric actuator 241 deforms in the direction of increasing the volume of the pumping chamber 205.
  • the cutouts 281 and 282 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 cuts 281 and 282. , 282.
  • Such a characteristic makes it possible to obtain a good stability of the film at the edges of the cuts 281, 282 by reducing in particular the risk of deformation of the valve during the compression of the film between the support 201 and the base 203.
  • the support 201, the cover 202 and the base 203 are held against each other, under stress, by means of an elastic clip 209 having the form of a spring-acting metal strip engaging between guide ribs 225, 235 formed respectively at the periphery of the cover 202 and the base 203.
  • the clip 209 has the general shape of a U whose ends curved inwardly form hooks 291 that hooks under the base 203, the clip 209 having a central portion 290 exerting axial pressure on a whole. central zone 202A of the cover 202.
  • the pump 201 thus produced has the advantage, just like the pump shown in the first embodiment, of having a membrane 204 whose periphery is subjected to a pressure that is substantially constant over time, the elastic clip 209 holding the cover 202 constantly. under pressure against the support 201.
  • the pump according to such an embodiment has the advantage of having an electrical insulation according to the VDE standard in force in Germany.
  • the invention is not limited to the embodiment described and illustrated which has been given by way of example. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.
  • the elastic clip may have a different shape including for example four branches distributed at 90 ° from each other.
  • the electrical insulation of the piezoelectric can be achieved by means of an isolation transformer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Reciprocating Pumps (AREA)
EP09774720.8A 2008-12-10 2009-11-30 Piezoelektrische pumpe für ein elektrisches haushaltsgerät Not-in-force EP2364402B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0806930A FR2939482B1 (fr) 2008-12-10 2008-12-10 Pompe piezoelectrique pour appareil electromenager
PCT/IB2009/007607 WO2010067157A1 (fr) 2008-12-10 2009-11-30 Pompe piezoelectrique pour appareil electromenager

Publications (2)

Publication Number Publication Date
EP2364402A1 true EP2364402A1 (de) 2011-09-14
EP2364402B1 EP2364402B1 (de) 2017-11-29

Family

ID=40497686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09774720.8A Not-in-force EP2364402B1 (de) 2008-12-10 2009-11-30 Piezoelektrische pumpe für ein elektrisches haushaltsgerät

Country Status (7)

Country Link
US (1) US8522462B2 (de)
EP (1) EP2364402B1 (de)
CN (1) CN102224342B (de)
ES (1) ES2654045T3 (de)
FR (1) FR2939482B1 (de)
PT (1) PT2364402T (de)
WO (1) WO2010067157A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038872A1 (de) * 2010-08-04 2012-02-09 Gardner Denver Thomas Gmbh Pumpe
CN102961806B (zh) * 2012-12-10 2014-05-21 同济大学 医用反馈式柱状压电自动微量注射器
JP2016200014A (ja) * 2015-04-07 2016-12-01 住友ゴム工業株式会社 ダイアフラムポンプ
DE102016115016A1 (de) * 2016-08-12 2018-02-15 Plan Optik Ag Mikropumpe und Verfahren zur Herstellung einer Mikropumpe
TWI618858B (zh) * 2017-02-24 2018-03-21 研能科技股份有限公司 流體輸送裝置
CN109899327B (zh) * 2017-12-07 2021-09-21 昆山纬绩资通有限公司 气流产生装置
TWI817615B (zh) * 2022-07-18 2023-10-01 研能科技股份有限公司 流體泵浦模組

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US2504493A (en) * 1945-05-21 1950-04-18 Milton L Brownshield Piezoelectric cell
US4420706A (en) * 1979-01-15 1983-12-13 Molex Incorporated Connector assembly for a piezoelectric transducer
US4545561A (en) * 1982-07-30 1985-10-08 Mcdonnell Douglas Corporation Piezoelectric valve operator
US4648807A (en) * 1985-05-14 1987-03-10 The Garrett Corporation Compact piezoelectric fluidic air supply pump
FR2583584B1 (fr) * 1985-06-14 1987-09-18 Ecole Nale Sup Meca Microtechn Dispositif de support d'un resonateur piezoelectrique a l'interieur d'un boitier
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
GB2253013B (en) * 1991-01-25 1994-03-09 Bespak Plc Pump apparatus for biomedical use
US5787614A (en) * 1993-03-30 1998-08-04 Rowenta-Werke Gmbh Electric steam iron with aerosol sprayer
US6785989B2 (en) * 2000-03-31 2004-09-07 The Procter & Gamble Company Methods and apparatus for removal of wrinkles from fabrics
US6589229B1 (en) 2000-07-31 2003-07-08 Becton, Dickinson And Company Wearable, self-contained drug infusion device
US6450419B1 (en) * 2000-10-27 2002-09-17 S.C. Johnson & Son, Inc. Self contained liquid atomizer assembly
US6843430B2 (en) * 2002-05-24 2005-01-18 S. C. Johnson & Son, Inc. Low leakage liquid atomization device
US7608984B2 (en) * 2006-05-15 2009-10-27 Adaptivenergy, Llc Motion amplification using piezoelectric element
US8807169B2 (en) * 2009-02-12 2014-08-19 Picolife Technologies, Llc Flow control system for a micropump

Non-Patent Citations (1)

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Title
See references of WO2010067157A1 *

Also Published As

Publication number Publication date
EP2364402B1 (de) 2017-11-29
WO2010067157A1 (fr) 2010-06-17
FR2939482A1 (fr) 2010-06-11
US20110296722A1 (en) 2011-12-08
ES2654045T3 (es) 2018-02-12
CN102224342A (zh) 2011-10-19
US8522462B2 (en) 2013-09-03
PT2364402T (pt) 2018-01-09
CN102224342B (zh) 2015-04-22
FR2939482B1 (fr) 2011-01-14

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