EP3391799A1 - Lave-vaisselle - Google Patents

Lave-vaisselle Download PDF

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Publication number
EP3391799A1
EP3391799A1 EP17166848.6A EP17166848A EP3391799A1 EP 3391799 A1 EP3391799 A1 EP 3391799A1 EP 17166848 A EP17166848 A EP 17166848A EP 3391799 A1 EP3391799 A1 EP 3391799A1
Authority
EP
European Patent Office
Prior art keywords
surface treatment
dishes
phase
tub
dishwasher
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.)
Withdrawn
Application number
EP17166848.6A
Other languages
German (de)
English (en)
Inventor
Christian Roth
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.)
V-Zug AG
Original Assignee
V-Zug AG
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 V-Zug AG filed Critical V-Zug AG
Priority to EP17166848.6A priority Critical patent/EP3391799A1/fr
Publication of EP3391799A1 publication Critical patent/EP3391799A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4236—Arrangements to sterilize or disinfect dishes or washing liquids
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/001—Drain phases, including initial, intermediate or partial draining phases
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0013—Drying phases, including dripping-off phases
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0015—Washing processes, i.e. machine working principles characterised by phases or operational steps other treatment phases, e.g. steam or sterilizing phase
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0034—Drying phases, including dripping-off phases
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4276—Arrangements to detect or remove bad smells or odours
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/48—Drying arrangements
    • A47L15/485—Drying arrangements by using alternative heat sources, e.g. microwave or infrared
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/10—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/17—Sonic or ultrasonic waves

Definitions

  • the invention relates to a dishwasher, in particular a household dishwasher, and a method according to the preamble of the independent claims.
  • the dishwasher includes a tub for holding dishes, a dishwashing rinse, a surface treatment device for influencing the surface characteristics of the dishes during a surface treatment phase, and a controller having a cleaning program.
  • a standard dishwashing program normally consists of a pre-rinse phase, a main rinse phase, a final rinse phase, and a drying phase.
  • the Drying phase lasts relatively long compared to the other phases. Furthermore, there is a problem in that the dishes, especially dishes made of plastic materials, even after the drying phase is still partially wet and the user, if he wants to empty the dishwasher shortly after the completion of dishwashing, the dishes must still partially dry.
  • the dishwasher comprises a tub for accommodating crockery, a dishwashing rinsing device, a surface treating device for influencing the surface characteristics of the crockery during a surface treatment phase, and a controller having a cleaning program.
  • the cleaning program has the surface treatment phase and a post-rinse phase which follows directly or indirectly after the surface treatment phase, in particular a final-rinse phase.
  • the surface of the dish is the area of the dish-environment interface in which the geometric and electronic structure is substantially different from that of the bulk solid.
  • the surface treatment relates to the surface of the dishes as solids themselves, i. For example, it does not affect the removal of surface dirt.
  • a final rinse phase is a rinse phase during which rinse aid is added to the process water.
  • plastic parts dry relatively badly in the dishwasher.
  • plastic parts have a comparatively low heat capacity and thus can not release sufficient heat energy absorbed during the preceding process steps to the evaporation process on their surface during the drying phase.
  • almost all plastics have a relatively low surface energy, so that forms a high contact angle with water and the water from the last rinse runs bad, because form on the surface of the dishes drops.
  • the surface treatment device is arranged in the interior of the tub, in particular on a wall of the tub.
  • a wall in particular side walls, front wall, rear wall, top and bottom of the tub are to be regarded.
  • the cleaning program may have a Clear Hughesphase directly or indirectly before the surface treatment phase.
  • the initial rinse phase can be, for example, a pre-rinse phase and / or a main rinse phase.
  • the hydrophilicity of a surface of the dishes can be increased.
  • the hydrophilicity can be measured by the contact angle that a drop of water forms on the surface of the dishes.
  • the surface is hydrophilic, i. the hydrophilicity is increased and it forms water droplets with smaller contact angles to the surface and thus a larger interface to the dishes or even a thin film of water instead of the more spherical segment-shaped water droplets.
  • a hydrophilic surface also causes water to run better on slightly sloped surfaces. Overall, this speeds up the drying process.
  • droplets form and the surface is called hydrophobic. As a result, the evaporation process on the surface of the dishes and the runoff of the water on slightly inclined surfaces deteriorates.
  • control and the surface treatment device are designed such that the surface treatment takes place during the surface treatment phase without water supply to the tub.
  • the surface treatment device is designed such that air-oxygen is decomposed into radicals and / or ionized, and / or wherein the surface treatment device comprises at least one UV radiation source, in particular with a wavelength of less than 200 nanometers and / or at least one plasma jet and / or at least one dielectrically impeded barrier discharge through which flows and / or at least one dielectrically impeded surface discharge through which flows and / or pointed electrodes for igniting a corona discharge.
  • the surface treatment device comprises at least one UV radiation source, in particular with a wavelength of less than 200 nanometers and / or at least one plasma jet and / or at least one dielectrically impeded barrier discharge through which flows and / or at least one dielectrically impeded surface discharge through which flows and / or pointed electrodes for igniting a corona discharge.
  • the surface treatment devices may comprise one or more ionization and / or radicalization devices of the same or different kind, which are independently movable.
  • the resulting particles can be used to run targeted chemical reactions on the surface of solid substrates.
  • the resulting radicals and ions can either undergo further compounds in the gas phase or form compounds on a solid surface with the substrate material.
  • polar groups are formed on the surface with endings such as -O, -OH or -COOH.
  • the ionization or decomposition of the air-oxygen into radicals can be achieved in several ways.
  • UV radiation sources which irradiate the dishes can be arranged in the tub at one or more points.
  • UV radiation sources are provided with a wavelength below 200 nm, since it also oxygen atoms O 2 split into two oxygen radicals O *, and bonds in polymers can be broken.
  • the UV radiation sources are to be arranged in the tub so that the shading is reduced as much as possible.
  • the diffusion of oxygen radicals and ozone into shaded areas can also activate areas that are not directly irradiated via surface reactions of the oxygen radicals and the ozone to a certain extent.
  • projecting plasma jets can be arranged in the tub, which introduce radicals and ions into the tub.
  • the process gas used is preferably air.
  • the flow rate is to be chosen so high that a sufficiently large number of radicals and charge carriers reaches the substrate and there achieves the desired.
  • the opening of the plasma jet can optionally be protected against ingress of water via a closure / valve / flap.
  • obstructed barrier discharges projecting into the tub can be arranged, which introduce radicals and ions into the tub.
  • the process gas used is preferably air.
  • the flow rate is to be chosen so high that a sufficiently large number of radicals and charge carriers reaches the substrate and there achieves the desiredecknhydrophil ist.
  • the opening of the respective DBD can be protected in the direction of the tub either via a closure and / or a valve and / or a flap against the ingress of water.
  • dielectrically impeded surface discharges can be arranged at one or more locations.
  • the discharge between the earthed and the supplied with a changing voltage electrodes is ignited.
  • the intervening dielectric prevents the formation of a thermal discharge.
  • the resulting radicals and ions in the discharge then diffuse to load the dishwasher and lead there to the desired relievenhydrophil ist.
  • pointed electrodes can be placed at one or more points in the tub, at which a corona discharge is ignited can be.
  • a corona discharge is ignited
  • the tub wall can be used.
  • directly fitted crockery and cutlery baskets can also be used as pointed electrodes. The UV radiation produced by the discharge and the ions and the radicals then lead to the desired surface activation on the adjacent surfaces.
  • the controller is configured such that the cleaning program has a drying phase directly or indirectly after the final rinsing phase.
  • the dishwasher may have a heating device, wherein the control is configured such that in the final rinse phase process water by means of the heater to a temperature of at least 50 ° C, in particular of at least 65 ° C, in particular of at least 80 ° C, can be heated.
  • the dishes Due to the high temperature in the Nach Stau Pattersonphase the dishes can absorb heat energy, which is released during the evaporation process or for drying the dishes again.
  • the cleaning program immediately before the surface treatment phase to a dripping phase in particular wherein the dripping phase has a duration of a maximum of 3 minutes, in particular of a maximum of 1.5 minutes.
  • the surface treatment device can be arranged on a wall of the tub, in particular movable along the wall of the tub and / or movable away from the wall. If, for example, the surface treatment device comprises a plurality of ionization and / or radicalization devices, these can be moved independently of one another.
  • the mobility has the advantage that as many surfaces of the dishes can be treated by the surface treatment device and thus shading can be avoided.
  • the controller additionally comprises an odor control program consisting of an odor treatment phase during which the dishes are treated solely by means of the surface treatment device.
  • the surface treatment device as described above, for example, designed as an ion or radical source, so that the formation of odors before the actual cleaning program can be reduced.
  • the resulting ions and radicals decompose the typically long-chain organic molecules that cause the unpleasant odor.
  • the surface treatment is carried out before rinsing the dishes, so that the water remaining on the dishes when rinsing is better dried.
  • the surface treatment and the rinsing can be carried out immediately after each other. But it is also possible that between these two Steps one or more other treatment phases are provided.
  • the hydrophilicity of a surface of the dishes may be enhanced, and / or the surface treatment may take place without supplying water to the tub.
  • the surface treatment by means of at least one UV radiation source, in particular with a wavelength of less than 200 nanometers, and / or by means of at least one flowed through dielectrically impeded barrier discharge, and / or by means of at least one dielectrically impeded surface discharge, and / or by means of pointed electrodes to ignite a corona discharge.
  • the dishes can be rinsed by means of process water having a temperature of at least 50 ° C., in particular of at least 65 ° C., in particular of at least 80 ° C.
  • the surface treatment device can be moved along a wall of the tub and / or away from the wall.
  • FIG. 1 a schematic representation of some components of a dishwasher.
  • the household dishwasher in Fig. 1 has in a known manner a tub 1 for receiving dishes 2.
  • different spraying means are arranged, such as a lower spray 3a and a middle spraying means 3b in the form of spray arms and an upper spraying means 4 to spray the dishes 2 with process water.
  • a circulation pump 5 serves to convey the process water via a circulation line from a bottom region 6 of the tub 1 to the spraying means 3a, 3b and 4.
  • a heater 7 is provided to heat the process water to a desired temperature.
  • the device has a drain pump 8, with which no longer required process water can be pumped out of the bottom portion 6 of the tub 1, and a fresh water supply 11 to supply the household dishwasher fresh water.
  • the various actuators of the device are controlled by a controller 9 of the device.
  • An input means 10 is connected to the controller 9, via which the user can issue commands to the device and view its status.
  • the controller 9 has several programs through which processes can be controlled, for example, a main cleaning program, a water-saving, a dishwashing or an intensive cleaning program.
  • UV lamps 12 are arranged on the inner walls of the tub, which serve as a surface treatment device. With these, the surfaces of the dishes 2 can be treated.
  • the UV lamps are movably mounted on the walls so that movement 13 along the wall or away from the wall into the interior of the tub is possible.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP17166848.6A 2017-04-18 2017-04-18 Lave-vaisselle Withdrawn EP3391799A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17166848.6A EP3391799A1 (fr) 2017-04-18 2017-04-18 Lave-vaisselle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17166848.6A EP3391799A1 (fr) 2017-04-18 2017-04-18 Lave-vaisselle

Publications (1)

Publication Number Publication Date
EP3391799A1 true EP3391799A1 (fr) 2018-10-24

Family

ID=58549073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17166848.6A Withdrawn EP3391799A1 (fr) 2017-04-18 2017-04-18 Lave-vaisselle

Country Status (1)

Country Link
EP (1) EP3391799A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1550396A2 (fr) * 2003-12-26 2005-07-06 Lg Electronics Inc. Lave-vaisselle comportant des éléments ayant une couche à plasma
DE102010027795A1 (de) * 2010-04-15 2011-10-20 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit Plasmagenerator und Verfahren zu seinem Betrieb
WO2012046208A2 (fr) * 2010-10-07 2012-04-12 Indesit Company S.P.A. Machine lave-vaisselle à cycles de lavage et procédé d'hygiénisation de celle-ci
DE102011003782A1 (de) * 2011-02-08 2012-08-09 Meiko Maschinenbau Gmbh & Co. Kg Reinigungsvorrichtung zur Reinigung von Reinigungsgut
DE102012207565A1 (de) * 2012-05-07 2013-11-07 Premark Feg L.L.C. Verfahren zum Betreiben einer als Programmautomat ausgebildeten Spülmaschine sowie entsprechende Spülmaschine
KR20150032037A (ko) * 2013-09-17 2015-03-25 서울바이오시스 주식회사 고도산화수를 이용하는 식기 세척기 및 이의 구동 방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1550396A2 (fr) * 2003-12-26 2005-07-06 Lg Electronics Inc. Lave-vaisselle comportant des éléments ayant une couche à plasma
DE102010027795A1 (de) * 2010-04-15 2011-10-20 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit Plasmagenerator und Verfahren zu seinem Betrieb
WO2012046208A2 (fr) * 2010-10-07 2012-04-12 Indesit Company S.P.A. Machine lave-vaisselle à cycles de lavage et procédé d'hygiénisation de celle-ci
DE102011003782A1 (de) * 2011-02-08 2012-08-09 Meiko Maschinenbau Gmbh & Co. Kg Reinigungsvorrichtung zur Reinigung von Reinigungsgut
DE102012207565A1 (de) * 2012-05-07 2013-11-07 Premark Feg L.L.C. Verfahren zum Betreiben einer als Programmautomat ausgebildeten Spülmaschine sowie entsprechende Spülmaschine
KR20150032037A (ko) * 2013-09-17 2015-03-25 서울바이오시스 주식회사 고도산화수를 이용하는 식기 세척기 및 이의 구동 방법

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