EP2464779B1 - Vorrichtung zum mischen eines mediums oder zum erzeugen von schaum - Google Patents

Vorrichtung zum mischen eines mediums oder zum erzeugen von schaum Download PDF

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Publication number
EP2464779B1
EP2464779B1 EP10737071.0A EP10737071A EP2464779B1 EP 2464779 B1 EP2464779 B1 EP 2464779B1 EP 10737071 A EP10737071 A EP 10737071A EP 2464779 B1 EP2464779 B1 EP 2464779B1
Authority
EP
European Patent Office
Prior art keywords
medium
suction
venturi pump
water
venturi
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
EP10737071.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2464779A1 (de
Inventor
Hans Eglmeier
Andreas Hanau
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL10737071T priority Critical patent/PL2464779T3/pl
Publication of EP2464779A1 publication Critical patent/EP2464779A1/de
Application granted granted Critical
Publication of EP2464779B1 publication Critical patent/EP2464779B1/de
Active 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/088—Liquid supply arrangements

Definitions

  • the invention relates to a device for mixing at least one medium with water or for producing foam in a water-conducting household appliance, which comprises two series-connected venturi pumps.
  • the household appliance is a washing machine or a dishwasher.
  • a venturi or jet pump is a pump in which the pumping action is generated by a fluid jet (“propulsion jet”) that sucks, accelerates and compresses / conveys another medium (“suction medium”). Since this pump type is very simple and has no moving parts, it is particularly robust and low maintenance and versatile.
  • the publication US 3,635,601 discloses a device which comprises two mirror-image arranged Venturi pumps in the valve body and can be used for example in dishwashers.
  • the valve body includes a fail-safe, elastic diaphragm valve.
  • the fail-safe elastic diaphragm valve is centrally located between the two venturi pumps and is operable in conjunction with them. With this device it is possible to optionally provide either one or two additives in a cleaning system.
  • a washing machine in which a venturi pump is used to supply a liquid medium from a separate container to the treatment tank.
  • the publication KR 2003 0012925 A discloses a diffusion system in which two special venturi tubes, a primary self-priming diffusion pump and a multi-stage diffusion pump are connected in series using water as the propellant and mixing ozone gas through the venturi tubes to produce ozone water.
  • the publication US 5,435,157 relates to a chemical dispenser for use in at least two scrubber machines to dispense a plurality of chemical agents in the process of scrubbing soiled laundry, wherein at least two chemical agents are compatible.
  • WO 2006/056273 A1 discloses a device for dispensing laundry treatment agent with a plurality of Venturi pumps, wherein the Venturi pumps are arranged in parallel.
  • the publication JP 59183819 discloses an apparatus for dissolving a material in a liquid or gas comprising a venturi pump, wherein the propellant medium and the suction medium of this venturi pump are optionally liquid and / or gaseous.
  • the object underlying the present invention was to provide an improved device for generating foam in a water-conducting domestic appliance.
  • the present invention provides a device for mixing at least one medium with water or for generating foam in a water-conducting household appliance, in particular a washing machine or a dishwasher, which device comprises a first and a second series-connected Venturi pump, wherein the first venturi pump is connected to the water supply of the machine.
  • the first drive medium for the first venturi pump is the water flow from the water supply of the device.
  • the device according to the invention it is possible to mix at least one medium with water and / or to generate foam in a water-conducting household appliance.
  • the venturi pump is a pump in which the pumping action is generated by a fluid jet (driving medium), which sucks, accelerates and compresses / promotes another medium (suction medium) by pulse exchange.
  • a fluid jet driving medium
  • the driving medium emerges from the motive nozzle with the highest possible speed.
  • the propulsion jet hits the suction medium located here. After leaving the nozzle, the propulsion jet initially behaves like a free jet. Internal friction and turbulence create a shear stress in the boundary layer between the fast propellant and the material slower suction medium. This voltage causes a pulse transmission, ie the suction medium is accelerated and entrained.
  • the mixing happens according to the principle of momentum conservation. Due to the expansion of the propulsion jet and the suction of the suction medium, the jet is slowed down, ie dynamic pressure is converted into static pressure. Since the suction medium is accelerated in the mixing chamber, according to Bernoulli also for the suction medium, a pressure drop, ie a suction, the nach DIt further suction from the suction. Often a diffuser is connected downstream for a further increase in pressure. The higher the relative density of the propellant in relation to the suction medium, the stronger the pumping action.
  • the device according to the invention is particularly suitable for systems with automatic detergent dosing, since after switching on the water supply, both the surfactant and the gas supply takes place automatically.
  • the invention also relates to a water-conducting household appliance, which has the device according to the invention.
  • An advantage of the device according to the invention is that only one water valve is necessary as an active component; the energy for foaming is taken from the (mechanical) energy content of the flowing water.
  • the foam generator is insensitive to dirt and wear, shows only low noise emissions and is significantly less expensive than conventional systems with air pumps and outflows.
  • the arrangement of the Venturi pumps can also be used to admix surfactant without foaming, for admixing with enriched air enriched air (such as ozone) or for admixing two media. In particular, foams enriched with special gases can also be produced.
  • the first driving medium of the first venturi pump is the water flow from the water supply of the device. Furthermore, in the first venturi pump, a first suction medium can be sucked from a storage container into the first blowing medium, so that a suction medium-blowing medium mixture is formed.
  • This suction medium-driving medium mixture from the first Venturi pump serves as a driving medium for the second Venturi pump, wherein in the second Venturi pump, a second suction medium is sucked.
  • the first suction medium is liquid and the second suction medium is gaseous or the first suction medium is gaseous and the second suction medium is liquid.
  • the first suction medium is liquid and the second suction medium is gaseous.
  • the first suction medium is a surfactant and the second suction medium air, ozone or enriched with additives (such as ozone) air.
  • the respective suction media can be sucked either from corresponding storage containers or from corresponding gas supply lines.
  • the first and / or the second venturi pump preferably have a diffuser in the mixing chamber.
  • the device according to the invention is connected via the water supply line to the household appliance.
  • the first suction medium preferably a surfactant
  • the first suction medium is then sucked from a storage container in the first venturi pump and mixed to form a water / medium mixture.
  • This water-medium mixture is now the driving medium for the second Venturi pump. By this driving medium, the gas is sucked in the second Venturi pump.
  • the feed line of the respective Saugmedlums and / or the supply line of the respective drive medium are expediently equipped with a throttle device.
  • This throttle device is preferably adjustable or adjustable, so that there is a defined limitation of the respective propellant or each of the suction medium.
  • any mixing ratio between the two suction media and the respective blowing media is possible.
  • the Drosseivoriques may for example be a valve, a nozzle, a cock, a slide or the like, which can be operated preferably via the control of the machine.
  • a preferred embodiment of the present device has electrical valves (as throttle devices) both in the water supply line and in the supply lines of the two suction media.
  • the amount of the respective suction medium can then be selected via these electrical valves and, for example, via a pulse control also mix as you like.
  • the device according to the invention can also be part of a pumping system.
  • the device according to the invention preferably has an outlet line from the second Venturi pump, which is connected either to the tub of the inner drum or directly to the sleeve flushing of the inner drum.
  • FIG. 1 shows an embodiment of the device.
  • Two series-connected Venturi 3 and 4 are connected via an electric valve 2 to the water inlet 1 and the water supply to the washing machine. If the user selects the wash cycle "foam wash", then the throttle device 2 opens, preferably an electric valve, and the water flow is directed into the first venturi pump 3.
  • the first venturi pump 3 surfactant is sucked out of a reservoir 7 via a first suction line 8 by the water flow, so that a water-surfactant mixture is formed.
  • This water-surfactant mixture serves as the second Venturi pump 4 as a propellant (second propellant).
  • the second Venturi pump 4 includes a diffuser in the mixing chamber. From the second Venturi pump occurs via an outlet line 5 foam, which can be brought either into the tub of the washing machine or directly on the sleeve flushing in the inner drum 6.
  • the air supply for the second venturi pump may, for example, also be ambient air, which is sucked in via an opening 12 directly into the second suction line 10.
  • throttle devices are present on the two suction lines.
  • the first suction line 8 has a throttle device 9 and the second suction line 10 has a further throttle device 11. This makes it possible to adjust both the surfactant and the air supply variable.
  • FIG. 2 shows a further embodiment of the device.
  • a throttle device 13 is mounted between the two series-connected venturi pumps 3 and 4.
  • the resulting water-medium mixture preferably a water-surfactant mixture to be foamed in a further step or not. If no foaming is desired, the water-medium mixture can be brought into the tub of the inner drum without further intermediate steps. However, if the water-medium mixture is foamed as in FIG. 1 already described air or gas sucked in via the second Venturi pump.
  • the suction line 8 is equipped with a throttle device 9, so that a defined limitation of Tensidzustroms is possible.
  • FIG. 3 shows a further embodiment of the device.
  • Two series-connected venturi pumps 3 and 4 are connected to the water inlet 1 and the water supply of the washing machine. If the user selects the appropriate wash cycle, the water flow is directed into the first venturi pump 3.
  • the first Venturi 3 is sucked by the water flow, a first medium from a reservoir 7 via a first suction line 8, so that a water-medium mixture is formed.
  • This water-medium mixture serves the second Venturi pump 4 as a driving medium (second driving medium).
  • second driving medium Through the water-medium mixture stream, a second medium is sucked from a further reservoir 14 via a second suction line 10 into the second Venturi pump 4 and mixed with the propellant.
  • the second venturi pump 4 may include a diffuser in the mixing chamber.
  • the mixture exits via an outlet line 5, which mixture can be brought into the washing tub of the washing machine or directly into the internal drum 6 via the sleeve flushing.
  • Either medium I is liquid and medium II is gaseous or medium I is gaseous and medium II is liquid.
  • throttle devices on the water supply 1 and the two suction lines 8, 10 are present.
  • the first suction line 8 has a throttle device 9 and the second suction line 10 has a further throttle device 11. This makes it possible to variably adjust both the supply of the medium I and of medium II.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP10737071.0A 2009-08-12 2010-07-30 Vorrichtung zum mischen eines mediums oder zum erzeugen von schaum Active EP2464779B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10737071T PL2464779T3 (pl) 2009-08-12 2010-07-30 Urządzenie do mieszania środka lub do wytwarzania piany

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028478A DE102009028478B3 (de) 2009-08-12 2009-08-12 Vorrichtung zum Erzeugen von Schaum
PCT/EP2010/061091 WO2011018357A1 (de) 2009-08-12 2010-07-30 Vorrichtung zum mischen eines mediums oder zum erzeugen von schaum

Publications (2)

Publication Number Publication Date
EP2464779A1 EP2464779A1 (de) 2012-06-20
EP2464779B1 true EP2464779B1 (de) 2014-04-16

Family

ID=42982138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10737071.0A Active EP2464779B1 (de) 2009-08-12 2010-07-30 Vorrichtung zum mischen eines mediums oder zum erzeugen von schaum

Country Status (5)

Country Link
EP (1) EP2464779B1 (pl)
CN (1) CN102471984B (pl)
DE (1) DE102009028478B3 (pl)
PL (1) PL2464779T3 (pl)
WO (1) WO2011018357A1 (pl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011014893A1 (de) * 2011-03-23 2012-09-27 i-clean Technologies GmbH Vorrichtung zur Mehrfachdosierung von Reinigern
CN107034629B (zh) * 2014-09-11 2019-01-18 中山市雅西环保科技有限公司 一种流量阀
CN107143656B (zh) * 2014-09-11 2019-07-09 长乐市丽智产品设计有限公司 一种用在流量控制装置上的流量阀
CN105463785B (zh) * 2014-09-11 2018-04-17 中山市雅西环保科技有限公司 一种分体式流量阀
CN105463786B (zh) * 2014-09-12 2018-05-11 长乐市丽智产品设计有限公司 一种自复位流量控制装置
CN112779732A (zh) * 2019-11-04 2021-05-11 合肥海尔洗衣机有限公司 一种洗衣机
CN112376224A (zh) * 2020-04-02 2021-02-19 无锡小天鹅电器有限公司 投放组件、投放装置、洗衣机及洗剂投放方法
CN112376222A (zh) * 2020-04-02 2021-02-19 无锡小天鹅电器有限公司 用于投放洗剂的投放组件、投放装置及洗衣机
CN112376220A (zh) * 2020-04-02 2021-02-19 无锡小天鹅电器有限公司 投放组件、投放装置、洗衣机及洗剂投放方法
CN112376225A (zh) * 2020-06-29 2021-02-19 无锡小天鹅电器有限公司 投放组件、投放装置及洗衣机
MX2023001106A (es) * 2020-07-28 2023-05-15 Schlumberger Technology Bv Sistema y metodología para mezclar materiales en un pozo.
US12305328B2 (en) * 2020-08-07 2025-05-20 Kemin Industries, Inc. Methods of treating textiles with foam and related processes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635601A (en) * 1970-08-10 1972-01-18 Economics Lab Fail-safe multiple product aspirator
JPS59183819A (ja) * 1983-04-01 1984-10-19 Mitsuo Sohgoh Kenkyusho Kk 液体または及び気体の中に他物を分散させる方法と該方法を利用した風呂洗浄機及び燃焼方法
US5435157A (en) * 1994-01-27 1995-07-25 Sunburst Chemicals, Inc. Laundry chemical dispenser
KR20030012925A (ko) * 2003-01-20 2003-02-12 이병주 다단계 미세기포 산기와 용해장치의 상호 배치 및 연관 시스템
US7481081B2 (en) * 2004-11-23 2009-01-27 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Automatic stand-alone dispensing device for laundry care composition
CN201058937Y (zh) * 2007-07-16 2008-05-14 南京乐金熊猫电器有限公司 洗衣机洗涤剂投放装置
DE102008054821B3 (de) * 2008-12-17 2010-03-18 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät mit Venturipumpe am Wasserzufuhrstrang

Also Published As

Publication number Publication date
PL2464779T3 (pl) 2014-09-30
CN102471984B (zh) 2014-03-26
EP2464779A1 (de) 2012-06-20
DE102009028478B3 (de) 2011-04-28
CN102471984A (zh) 2012-05-23
WO2011018357A1 (de) 2011-02-17

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