EP2850241B1 - Wasserführendes haushaltsgerät mit einer nebelerzeugungseinrichtung - Google Patents

Wasserführendes haushaltsgerät mit einer nebelerzeugungseinrichtung Download PDF

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Publication number
EP2850241B1
EP2850241B1 EP13722735.1A EP13722735A EP2850241B1 EP 2850241 B1 EP2850241 B1 EP 2850241B1 EP 13722735 A EP13722735 A EP 13722735A EP 2850241 B1 EP2850241 B1 EP 2850241B1
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EP
European Patent Office
Prior art keywords
downward direction
liquid container
section
domestic appliance
mist
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
EP13722735.1A
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German (de)
English (en)
French (fr)
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EP2850241A1 (de
Inventor
Hans Eglmeier
Hartmut Schaub
Ingo Schulze
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
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BSH Hausgeraete GmbH
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    • 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
    • D06F19/00—Washing machines using vibrations for washing purposes

Definitions

  • the invention relates to a water-conducting household appliance, in particular a laundry treatment appliance for treating laundry. Specifically, the invention relates to the field of laundry treating appliances used for washing and / or drying laundry, such as washing machines, tumble dryers and laundry dryers.
  • the DE 10 2010 038 619 A1 is a household appliance with an ozone generator known.
  • the known household appliance has a treatment area and a steam generator, wherein a steam generated by the steam generator can be guided into the treatment area.
  • An ozone generated by the ozone generator can be conducted with the steam in the treatment area.
  • the ozone generator can be configured for example by a UV lamp, in particular UVC lamp, or generate the ozone by a silent discharge from the air. As a result, a germ-reducing treatment is possible, wherein even at a steam temperature of less than 60 ° C, a germ-reducing effect.
  • the known household appliance has a fog generator and an ozone generator.
  • an ozone-containing mist can be generated by means of the ozone generator and the mist generator.
  • the ozone-containing mist is then led into the treatment area.
  • ozone-enriched water can be generated.
  • the fog generator can then be generated from the ozone-enriched water, the ozone-containing mist.
  • the fog generator can be configured as an ultrasonic nebulizer.
  • A1 known household appliance has the disadvantage that an interior of the fog generator, which serves to receive water, takes up a certain amount of space. Especially with water-bearing household appliances, such as a washing machine or a tumble dryer, the available space within the housing is already tight. This complicates the realization of an effective treatment with ozone-containing mist. Although conceivable as small as possible sizing the fog generator, but also reduces the amount of fog generated per unit time, which extends, among other things, the duration of treatment. In addition, there is a potential tilting of the household appliance, which can be done for example during a transport, the problem that the existing water in the interior of the fog generator expires.
  • An object of the invention is to provide a water-conducting household appliance with an improved structure. Specifically, it is an object of the invention to provide a water-conducting household appliance, in which a water-saving and size optimized design for a generation of fog, in particular ozone-containing fog is possible.
  • a water-conducting domestic appliance which serves in particular as a laundry treatment device, wherein a mist generator is provided, the mist generator having a liquid container and an ultrasound generator, wherein the ultrasound generator is used for nebulizing an aqueous liquid can be filled in the liquid container and wherein the liquid container viewed in an operating position, starting from a predetermined filling level up to which the aqueous liquid is regularly at least approximately fillable during operation, is configured in a downward direction with an inner cross section which is at least predominantly reduced and which is oriented perpendicular to the downward direction.
  • mist is understood as meaning an aerosol which is a mixture of solid and / or liquid suspended particles and a gas.
  • a device which can produce such an aerosol is designated as a mist generating device.
  • the mist consists of air and water and / or liquid detergents.
  • the term "aqueous liquid” refers to water based and possibly also consist exclusively of water.
  • the aqueous liquid can in this case not only based on a fresh water, but also on a cached water, in particular a rinse water.
  • the aqueous liquid is first enriched with ozone and then atomized.
  • This operating position is usually functionally relevant.
  • the gravity is usually utilized to guide water to appropriate points of the water-conducting household appliance.
  • a tub can be provided, wherein a Abpumpstrang is connected to a lower outlet of the tub. In the operating position, the tub can then be emptied via the pumping line.
  • the downward direction is preferably determined such that in the operating position it is at least substantially parallel to the direction of gravitational acceleration.
  • the liquid container starting from the predetermined filling level in the downward direction, is designed with a monotonically decreasing internal cross section.
  • the inner cross section is reduced in the downward direction, wherein the inner cross section sections may remain constant.
  • the liquid container, starting from the predetermined filling level in the downward direction is configured with a strictly monotonically decreasing internal cross section.
  • the inner cross-section always decreases, with no portions are provided in which the inner cross-section remains constant in the downward direction.
  • the inner cross section can be reduced to the size which is required for the ultrasonic element.
  • the liquid container is designed, starting from the predetermined filling level in the downward direction, with at least one chronic section, in which the inner cross-section decreases in a strictly monotonous manner in the downward direction.
  • an ultrasonic element is arranged at the bottom of the liquid container, then in this embodiment, an advantageous propagation of the ultrasonic waves introduced into the water can take place up to the surface of the aqueous liquid. This results in an effective atomization of the aqueous liquid.
  • the liquid container is designed, starting from the predetermined filling level in the downward direction, with at least one convex portion in which the inner cross-section decreases strictly monotonically in the downward direction.
  • the steepness of the inner wall in the convex portion thus increases in the downward direction.
  • the inner cross-section viewed in the downward direction initially comparatively strong and then less and less.
  • a trumpet-shaped configuration can be realized.
  • a club-shaped intensity distribution of an ultrasonic generator attached to the bottom of the liquid container a further enlargement of the surface can be achieved with a given receiving volume of the liquid container, at which an effective atomization takes place.
  • the liquid container is designed, starting from the predetermined filling level in the downward direction, with at least one concave portion in which the inner cross-section decreases in a strictly monotonous manner in the downward direction.
  • a concave configuration can be illustrated by a concave mirror.
  • the liquid container starting from the predetermined filling level in the downward direction, is configured with at least one section which is designed in accordance with a part of a surface of a rotational ellipsoid and in which the inner cross section decreases in a strictly monotonous manner in the downward direction.
  • This embodiment results in a concave section.
  • the mode of action of a concave mirror with respect to the ultrasonic waves of an ultrasound element can be used, in order to achieve, for example, an atomization on an ellipsoidal surface of the aqueous liquid.
  • the ultrasound generator prefferably has at least one ultrasound element, for an excitation surface of the ultrasound element to be arranged at least approximately at the predetermined filling level in the liquid container, and for the excitation surface of the ultrasound element to point at least substantially in the downward direction.
  • a targeted tilting relative to the downward direction may optionally be made to adapt to the design of the liquid container.
  • a partition wall which is arranged at the predetermined filling level in the liquid container, and in that the dividing wall has an ultrasonic element region in which the ultrasonic element is arranged horizontally from a mist region in which the aqueous liquid is at least essentially nebulizable, separates.
  • the fog arising in the mist region can be generated in a concentrated manner over the water surface.
  • the ultrasonic generator has exactly one ultrasonic element.
  • the ultrasound generator can also have a plurality of ultrasound elements.
  • an ultrasound element is arranged at the predetermined filling level and that a further ultrasound element is arranged at the bottom of the liquid container, wherein the bottom of the liquid container is then formed at least substantially by an excitation surface of the further ultrasound element.
  • Fig. 1 shows a water-conducting household appliance 1 in a partial, schematic representation according to a first embodiment.
  • the household appliance 1 can in particular be designed as a laundry treatment appliance for treating laundry, which can serve, inter alia, for washing and / or drying laundry.
  • the household appliance 1 can be configured as a washing machine, washer-dryer or tumble dryer.
  • the household appliance 1 of the invention is suitable in a corresponding modification, however, for other applications.
  • the water-conducting domestic appliance 1 has a mist generator 2 and a treatment gas generator 3.
  • the treatment gas generator 3 is designed in this embodiment as an ozone generator 3.
  • the water-bearing Domestic appliance 1 a treatment area 4, which is provided within a treatment container 5.
  • the treatment tank 5 is designed in this embodiment as a tub 5.
  • the household appliance 1 has a fresh water connection 6, which is connected before commissioning, for example, with a water pipe of a domestic installation. Fresh water can thus be conducted into the domestic appliance 1 via the fresh water connection 6.
  • a check valve 7 and a check valve 8 are provided, which are controlled for example by a controller, not shown, according to a program flow.
  • the household appliance 1 Before the household appliance 1 is put into operation, it is set up so that it is in an operating position.
  • the operating position is in this case set with respect to a direction 16 of the gravitational acceleration or gravitational acceleration direction 16. This ensures inter alia the free-flowing water transport within the household appliance 1.
  • the fresh water soaked into the dispensing dish 11 is thereby conveyed via the downwardly directed inlet connection 12 into the treatment area 4.
  • the hot water thus flows when pumping through the pump 14 at least substantially completely into the pumping line 13 from.
  • the mist generation device 2 has a liquid container 20.
  • the liquid container 20 has an axis 21, with respect to which the liquid container 20 is designed rotationally symmetrical.
  • a certain downward direction 22 is selected for the household appliance 1.
  • a possible downward direction 22 is characterized by the fact that it points downwards and in that, for example, freely flowing water can be transported by gravity.
  • the downward direction 22 is at least substantially in the direction 16 of gravitational acceleration.
  • the downward direction 22 may point in the direction 16 of the gravitational acceleration or may be oriented parallel to the direction 16 of the gravitational acceleration.
  • the downward direction 22 is usually oriented perpendicular to a housing top side, not shown.
  • the liquid container 20 is arranged so that in the operating position, the downward direction 22 is located on the axis 21 of the liquid container 20 or that the downward direction 22 is parallel to the axis 21.
  • aqueous liquid 25 may simply be fresh water.
  • suitable substances can also be added to the supplied fresh water.
  • fragrances may be dissolved in the aqueous liquid 25.
  • the aqueous liquid 25 can also be produced by adding ozone.
  • the aqueous liquid 25 is filled up to a predetermined filling level 26.
  • fresh water can be refilled by a suitable controller so that the aqueous liquid 25 is always stored at least approximately up to the filling level 26 in the liquid container 20.
  • the liquid container 20 has a conical section 27.
  • the conical portion 27 tapers in the downward direction 22.
  • An inner cross-section 28 of the interior 24 of the liquid container 20 is reduced in the operating position from going from the predetermined filling level 26 in the downward direction 22 to a bottom 29 of the liquid container 20, since the conical portion 27 extends from the filling level 26 to the bottom 29.
  • the inner cross section 28 is reduced from the filling level 26 to the bottom 29 strictly monotonous.
  • the liquid container 20 is configured in the downward direction 22 with a decreasing inner cross-section 28 oriented perpendicular to the downward direction 22, starting from the predetermined filling level 26 to which the aqueous liquid 25 is regularly filled during operation .
  • short sections may also be provided, in which the inner cross section 28 does not change in the downward direction 22 or in which the inner cross section 28 even widened somewhat, as is the case for example with ribs or at connecting points, in particular welds ,
  • the design of the liquid container 20 with the conical portion 27 is thus an embodiment of a liquid container, which is viewed in the operating position, starting from the predetermined Einhelli 26 in the downward direction 22 is designed with a strictly monotone decreasing inner cross-section. If, in addition, one or more sections with the same internal cross-section are provided, then the liquid container is designed with a monotone, but not strictly monotonically decreasing internal cross-section.
  • the bottom 29 of the liquid container 20 is formed in this embodiment by an excitation surface 30 of an ultrasonic element 31 of an ultrasound generator 32.
  • the aqueous liquid 25 is atomized on its surface 33 into fine droplets, so that a mist 34 forms over the surface 33.
  • the ultrasonic element 31 may comprise, for example, a piezoelectric vibrating element.
  • the interior 24 in this case has over the surface 33 still a remaining volume in which the mist 34 can be buffered.
  • the treatment gas generator 3 comprises a blower, which guides the generated treatment gas via a pneumatic line 35 into the volume above the surface 33 of the interior 24. Via a further pneumatic line 36 then mixed with the treatment gas mist 34 is guided into the treatment vessel 5.
  • a blower which guides the generated treatment gas via a pneumatic line 35 into the volume above the surface 33 of the interior 24. Via a further pneumatic line 36 then mixed with the treatment gas mist 34 is guided into the treatment vessel 5.
  • a blower which guides the generated treatment gas via a pneumatic line 35 into the volume above the surface 33 of the interior 24.
  • Via further pneumatic line 36 then mixed with the treatment gas mist 34 is guided into the treatment vessel 5.
  • the conical design of the section 27 results in an advantageous propagation of the ultrasonic waves generated by the ultrasonic element 31 to the surface 33 of the liquid 25.
  • a club-shaped intensity distribution of the ultrasonic waves advantageously spread upward, wherein the ultrasound expands accordingly. This can be done by the choice of a piezoelectric crystal or the like and a sound frequency suitable for this purpose adaptation to the particular application, in particular the size of the liquid container 20.
  • the large surface 33 in comparison to the excitation surface 30 can serve as a calming zone.
  • the size of the liquid container 20 can be optimized, since the volume of the inner space 24 is optimized in terms of its design and thus can be made relatively small, without the functionality is impaired.
  • Fig. 2 shows a mist generator 2 of the in Fig. 1 illustrated water-conducting household appliance 1 according to a second embodiment in a schematic sectional view.
  • the liquid container 20 has a convex portion 37.
  • the convex portion 37 extends from the filling level 26 to the bottom 29 of the liquid container 20.
  • the convex portion 37 is configured such that the inner cross section 28 strictly from the filling level 26 to the bottom 29 monotonically reduced.
  • the convex portion 37 is also configured rotationally symmetrical with respect to the axis 21.
  • the profile in the interior 24 bauchförmig curved flanks at the convex portion 37.
  • Fig. 3 shows a mist generator 2 of the in Fig. 1 illustrated household appliance 1 according to a third embodiment in a schematic sectional view.
  • the liquid container 20 viewed in the operating position, starting from the predetermined filling level 26 in the downward direction 22 with a concave portion 38 configured in which the inner cross section 28 of the inner space 24 in the downward direction 22 strictly monotonically reduced.
  • the concave portion 38 forms in this embodiment, a concave 29 designed bottom.
  • the concave portion 38 is configured as part 38 of a surface of an ellipsoid of revolution. As it is based on the FIGS. 4 and 5 is described, the liquid container 20 is not configured rotationally symmetrical with respect to the axis 21 in this case.
  • the mist generation device 2 has an ultrasonic element 40 arranged in the region of the filling level 26.
  • an excitation surface 41 of the ultrasound element 40 is approximately at the predetermined filling level 26.
  • the excitation surface 41 lies under the surface 33 of the aqueous liquid 25 in order to enable effective generation of ultrasonic waves in the liquid 25.
  • the excitation surface 41 points in the downward direction 22.
  • a partition wall 42 is provided, which is arranged on the filling level 26 in the liquid container 20.
  • the partition wall 42 separates in the region of the surface 33 of the liquid 25 an ultrasonic element region 43, in which the ultrasonic element 40 is arranged horizontally from a mist area 44, in which by misting the aqueous liquid 25 of the mist 34 is generated.
  • the bottom 29 is configured by the configuration of the concave portion 38 such that the sound waves emanating from the excitation surface 41 of the ultrasound element 40 are directed into the mist region 44 and concentrated there. This fact is in the Fig. 3 schematically illustrated by the arrows.
  • the embodiment of the liquid container 20 deviating from a rotational symmetry about the axis 21 in particular supports the separation into the ultrasonic element region 43 and the mist region 44.
  • a level 45 of the excitation surface 30 is approximately at the Ein Schollclude 26.
  • the level 45 is so far below the Ein Stahl 26, that in a possible hysteresis of the scheme for filling the liquid container 20, the excitation surface 30 is always below the surface 33. That is, a lower level of hysteresis is set around fill level 26 above level 45.
  • Fig. 4 shows the in Fig. 3 shown mist generator 2 in a schematic representation of the designated IV viewing direction.
  • the liquid container 20 is shown here open.
  • the elliptical configuration of the inner cross section 28 is determined by a main axis 46 and a minor axis 47.
  • the lengths of the main axis 46 and the minor axis 47 from the filling level 26 in the downward direction 22 decrease strictly monotonously.
  • Fig. 5 shows the in Fig. 4 illustrated mist generator 2 in a schematic sectional view along the designated V section line.
  • the ultrasonic element 40 is arranged in the ultrasonic element region 43.
  • the level 45 of the excitation surface 41 of the ultrasonic element 40 is slightly below the Ein Schollclude 26.
  • a level 48, to which the partition wall 42 extends in the downward direction 22, is still below the level 45 of the ultrasonic element 40. This is a reliable separation between the ultrasonic element region 43 and the mist region 44 ensured by the partition wall 42.
  • the lines 35, 36 both preferably open into the mist region 44 above the surface 33 of the aqueous liquid 25 of the interior 24.
  • non-rotationally symmetrical embodiments of the liquid container 20 can also be based on a rectangular, in particular square, inner cross section 28.
  • a pyramidal or truncated pyramidal configuration can be achieved.
  • a suitable curvature of one or more walls may additionally be provided. The inclination or curvature can vary between the individual walls. In particular, only a single wall can be provided with a curvature.
  • the operating principle of a concave mirror, in particular a parabolic mirror, which directs the sound waves from an ultrasonic element 40 in the ultrasonic element region 43 into a mist region 44 can also be configured in a different way than through a section of an ellipsoid of revolution.
  • the ultrasound element 40 is preferably arranged in a focal point, so that the generated sound waves concentrate in the other focal point of the ellipsoid of revolution.
  • the running time for all paths is the same.
  • Such a way folded way for the sound waves can reduce the necessary volume of the interior 24 again.
  • the bottom 29 of the liquid container 20 can be suitably selected in terms of its properties, in particular a choice of material and a surface finish, to the requirements for sound reflection and low absorption of the ultrasonic waves.
  • a check valve 50 or the like there is the advantage that the discharge time is short.
  • the emptying can take place via a line 51, in which the check valve 50 is arranged and which opens into the pumping line 13.
  • Due to the small volume of the interior 24 also results in a minimized leakage at not emptied liquid container 20 when the household appliance is tilted, for example, for transport.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Special Spraying Apparatus (AREA)
EP13722735.1A 2012-05-14 2013-05-08 Wasserführendes haushaltsgerät mit einer nebelerzeugungseinrichtung Active EP2850241B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012207978A DE102012207978A1 (de) 2012-05-14 2012-05-14 Wasserführendes Haushaltsgerät mit einer Nebelerzeugungseinrichtung
PCT/EP2013/059577 WO2013171109A1 (de) 2012-05-14 2013-05-08 Wasserführendes haushaltsgerät mit einer nebelerzeugungseinrichtung

Publications (2)

Publication Number Publication Date
EP2850241A1 EP2850241A1 (de) 2015-03-25
EP2850241B1 true EP2850241B1 (de) 2016-07-13

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EP13722735.1A Active EP2850241B1 (de) 2012-05-14 2013-05-08 Wasserführendes haushaltsgerät mit einer nebelerzeugungseinrichtung

Country Status (6)

Country Link
EP (1) EP2850241B1 (pl)
CN (1) CN104302826B (pl)
DE (1) DE102012207978A1 (pl)
PL (1) PL2850241T3 (pl)
RU (1) RU2605383C2 (pl)
WO (1) WO2013171109A1 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4006225A1 (de) 2020-11-27 2022-06-01 BSH Hausgeräte GmbH Haushaltsgerät zum behandeln von behandlungsgut, umfassend einen wassertank
EP4006226A1 (de) 2020-11-27 2022-06-01 BSH Hausgeräte GmbH Haushaltsgerät zum behandeln von behandlungsgut, umfassend einen nebelerzeuger

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DE102014214341B3 (de) * 2014-07-23 2015-09-10 BSH Hausgeräte GmbH Haushaltsgerät mit Tropfenerzeuger
DE102014214347B3 (de) * 2014-07-23 2015-09-10 BSH Hausgeräte GmbH Haushaltsgerät
DE102014224722B3 (de) * 2014-12-03 2016-06-09 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Programmauswahleinrichtung
CN109306604A (zh) * 2017-07-27 2019-02-05 青岛海尔洗衣机有限公司 水雾形成方法、家用电器用水雾形成装置及家用电器
CN110528224B (zh) * 2018-05-24 2022-09-27 青岛海尔洗涤电器有限公司 一种衣物处理装置及其控制方法
CN111411474A (zh) * 2018-12-19 2020-07-14 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的控制方法及衣物处理设备
DE102019207236A1 (de) * 2019-05-17 2020-11-19 E.G.O. Elektro-Gerätebau GmbH Verfahren und Vorrichtung zur Bestimmung einer Oberflächenspannung einer Flüssigkeit und wasserführendes Haushaltsgerät
DE102019212838A1 (de) * 2019-08-27 2021-03-04 BSH Hausgeräte GmbH Anordnung zum Steuern einer Austrittsrichtung eines Fluids
RU196560U1 (ru) * 2019-11-15 2020-03-04 федеральное государственное автономное образовательное учреждение высшего образования Первый Московский государственный медицинский университет имени И.М. Сеченова Министерства здравоохранения Российской Федерации (Сеченовский университет) (ФГАОУ ВО Первый МГМУ им. И.М. Сеченова Минздрава России (Се Устройство для удаления зубных отложений с озонированием контактной среды
DE102021213574A1 (de) 2021-12-01 2023-06-01 BSH Hausgeräte GmbH Verdampfungsvorrichtung für ein Wäschepflegegerät, Wäsche-pflegegerät und Verfahren zum Verdampfen einer Flüssigkeit in einem Wäschepflegegerät

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DE10260156A1 (de) * 2002-12-20 2004-07-01 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrockner und Verwendung eines Ultraschallzerstäubers
EP1611831B1 (en) * 2004-06-04 2009-05-13 Panasonic Corporation Mist generating device, and dishwasher and washing machine using same
CN1990941B (zh) * 2005-12-31 2010-08-25 海尔集团公司 一种具有高位提升定向喷雾系统的洗衣机
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DE102010038619A1 (de) 2010-07-29 2012-02-02 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einem Ozongenerator
DE102010038620A1 (de) 2010-07-29 2012-02-02 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einem Ozongenerator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4006225A1 (de) 2020-11-27 2022-06-01 BSH Hausgeräte GmbH Haushaltsgerät zum behandeln von behandlungsgut, umfassend einen wassertank
EP4006226A1 (de) 2020-11-27 2022-06-01 BSH Hausgeräte GmbH Haushaltsgerät zum behandeln von behandlungsgut, umfassend einen nebelerzeuger
DE102020214962A1 (de) 2020-11-27 2022-06-02 BSH Hausgeräte GmbH Haushaltsgerät zum behandeln von behandlungsgut, umfassend einen nebelerzeuger
DE102020214963A1 (de) 2020-11-27 2022-06-02 BSH Hausgeräte GmbH Haushaltsgerät zum behandeln von behandlungsgut, umfassend einen wassertank

Also Published As

Publication number Publication date
CN104302826B (zh) 2017-02-15
RU2014146258A (ru) 2016-07-10
PL2850241T3 (pl) 2016-12-30
WO2013171109A1 (de) 2013-11-21
DE102012207978A1 (de) 2013-11-14
RU2605383C2 (ru) 2016-12-20
EP2850241A1 (de) 2015-03-25
CN104302826A (zh) 2015-01-21

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