EP3213666A1 - Lave-vaisselle - Google Patents

Lave-vaisselle Download PDF

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Publication number
EP3213666A1
EP3213666A1 EP17156182.2A EP17156182A EP3213666A1 EP 3213666 A1 EP3213666 A1 EP 3213666A1 EP 17156182 A EP17156182 A EP 17156182A EP 3213666 A1 EP3213666 A1 EP 3213666A1
Authority
EP
European Patent Office
Prior art keywords
air
dishwasher according
cooling channel
dishwasher
section
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
EP17156182.2A
Other languages
German (de)
English (en)
Other versions
EP3213666B1 (fr
Inventor
Benjamin STANKE
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3213666A1 publication Critical patent/EP3213666A1/fr
Application granted granted Critical
Publication of EP3213666B1 publication Critical patent/EP3213666B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/48—Drying arrangements
    • A47L15/483—Drying arrangements by using condensers
    • 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
    • A47L15/488—Connections of the tub with the ambient air, e.g. air intake or venting arrangements
    • 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
    • A47L15/4209—Insulation arrangements, e.g. for sound damping or heat insulation
    • 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
    • A47L15/4246—Details of the tub

Definitions

  • the invention relates to a dishwasher, in particular a program-controlled domestic dishwasher, with a washing compartment providing a washing compartment for receiving items to be cleaned and a condensation dryer for externally loading a side wall of the washing compartment with outside air.
  • Dishwashers in general and program-controlled household dishwashers in particular are well known from the prior art per se, which is why there is no need for a separate documentary proof. It is therefore only exemplary on the DE 10 2013 101 861 A1 referenced, which relates to a generic dishwasher.
  • Dishwashers of the type in question have a washing container, which provides a washing compartment.
  • This washing compartment is accessible on the user side via a charging opening which can be closed in a fluid-tight manner by means of a pivotally mounted flushing door.
  • the washing container serves to receive items to be cleaned, which in the case of a program-controlled household dishwasher, for example, can be crockery, cutlery pieces and / or the like.
  • the dishwasher For loading of items to be cleaned with rinse liquor, the dishwasher has a scavenging chamber side formed spray.
  • This spraying device generally provides rotatably mounted spray arms, with typically two or three such spray arms being provided.
  • a loading of the items to be cleaned with rinse liquor by means of rotating spray arms.
  • a circulating pump is provided, to which the spray arms are fluidically connected.
  • dishwashers For drying items to be washed after completion of a proper cleaning, dishwashers previously known from the prior art typically have a condensation dryer. This serves the outside admission of a Spül matterserwand with outside air, resulting in a cooling of the Spül matterserwand with the result that moist air located inside the Spül mattersers can condense on the inside cooled from the outside Spül variouserwand. The moist air in the rinsing container is thus deprived of moisture, which leads to the drying of the dishes which are still hot at the end of an intended washing program.
  • the condensation dryer and the heat pump device may have a common fan, as with the DE 10 2013 101 861 A1 is described.
  • Dishwashers of the type described above have proven themselves in everyday practice. However, there is a constant drive to provide for improvements, especially with regard to energy consumption. It is therefore an object of the invention to further develop a dishwasher of the type mentioned in that a reduced energy consumption is possible in the intended use case. Furthermore, an improved handling of the dishwasher by the user is desired.
  • a dishwasher of the aforementioned type is proposed with the invention is characterized in that the condensation dryer is formed fan-free and has an air supply duct, the air input side, providing a diffuser-shaped widening of the flow cross-section.
  • the condensation dryer of the dishwasher according to the invention is fan-free. It is therefore completely dispensed with the use of an electrically operated fan. This helps to save energy in the intended use case, because it requires no electrical energy for the operation of the condensation dryer according to the invention for lack of fan.
  • the condensation dryer has an air supply duct.
  • This air supply channel provides On the input side, a diffuser-shaped extension of the flow cross-section ready.
  • the free convection of the inflowing into the air duct outer air is promoted, creating an air flow due to the so-called chimney effect without the need for a blower.
  • the inventively provided diffuser-shaped extension of the flow cross-section ensures in the case of operation that there is no or only slight pressure losses during the intake of outside air.
  • outside air drawn in by free convection flows outside the washing compartment wall, which leads to cooling of the washing compartment wall with simultaneous heating of the air flowing past it.
  • the heated air continues to increase, as a result, it comes to the formation of a negative pressure on the air inlet side.
  • Outside air is thereby sucked, due to the inventive design without significant pressure loss.
  • the so-sucked outside air is also heated, this cycle is maintained until it has come to cool the Spül matterserwand on outside air temperature.
  • Another advantage of the embodiment according to the invention is that the manufacturing costs and assembly costs are reduced due to the blower, which is not included in the prior art.
  • the embodiment of the invention provides a cost reduction. It is also advantageous that in the normal operation of the dishwasher, a noise reduction is achieved, which is due to the fact that eliminates the flow noise caused by a fan. It can be done so a quieter operation of the dishwasher, which requires improved handling for the user. Last but not least, the failure of the blower and the susceptibility of the Dishwasher reduced, which also contributes to a user-side simplification in handling.
  • the dishwasher is characterized by a closure flap formed on the air inlet side of the air supply duct.
  • the closure flap serves to selectively close or open the flow cross-section of the air supply channel.
  • the air supply channel is closed on the air inlet side, that is to say an intrusion of outside air into the air supply channel is not possible.
  • An entry of outside air into the air supply duct is only permitted when the shutter is open, that is to say when the shutter is in such a position that the flow cross-section of the air supply duct is at least partially released.
  • the design of a closure flap has the advantage of optionally taking the condensation dryer into use, that is to actively switch it. This makes it possible to prevent an air flow along the Spül micerwand then when cooling of the same is not desirable, for example, during a rinsing process taking place. An undesirable cooling during a rinsing process taking place can thus be prevented with the advantage of a avoided energy loss.
  • An activation that is to say start-up of the condensation dryer, takes place only when the closure flap is opened at a point in time at which drying is to be carried out in terms of process technology, for example after passing through a final-rinse operation. It is therefore preferred according to a further feature of the invention that the position of the flap is programmatically adjustable.
  • the position of the flap is thus adjusted depending on the washing program carried out by the dishwasher. In this case, during all rinsing phases in which drying is not desired, the closure flap in its closed position, so that the condensation dryer is deactivated. Only then, when a process-technical drying is desired, the condensation dryer is activated by transferring the shutter from the closed position to the open position.
  • the air supply duct on the air outlet side has a slot-shaped opening extending in the longitudinal direction of the air supply duct.
  • This opening is slit-shaped, so that in an advantageous manner a two-dimensional loading of the associated Spül userwand done, which causes an optimized cooling of the Spül micerwand.
  • the extension of the slot-shaped opening is preferably optimized so that, with the lowest possible pressure loss of the outside air supplied via the air supply duct, the widest possible coverage of the rinsing vessel wall to be cooled takes place.
  • the flow cross-section of the air duct tapers in the longitudinal direction, starting from the air inlet-side extension.
  • the flow space of the air duct thus has on the input side a diffuser-shaped extension, followed by a taper in the longitudinal direction.
  • the formation of the taper affords the advantage that over the longitudinal extent of the slot-shaped dispensing opening substantially equal pressure conditions are applied, so that a uniform loading of the outlet-side opening and thus the associated Spül interchangeerwand done with outside air.
  • the condensation dryer has a cooling channel which is fluidly connected to the air duct on the air outlet side.
  • the cooling channel extends along a side wall of the washing container and the top wall of the washing container.
  • outside air is sucked in, which flows in via the air supply duct and due to the structural design of the air supply duct is conveyed to the cooling duct without significant pressure loss.
  • the side wall of the washing container is cooled.
  • the chimney effect is used, as a result, heated outside air rises in the cooling channel, flows out on the output side and as a result, a negative pressure is created in the air supply channel, so that more outside air is added.
  • the cooling channel opens according to a further feature of the invention, machine front side in an outlet opening.
  • the outside air passed through the cooling channel is discharged via this outlet opening. From there it enters the dishwasher surrounding atmosphere.
  • the cooling channel provides a flow cross-section of constant size in the flow direction. This configuration ensures in an advantageous manner that no significant pressure losses occur in the outside air which is passed through the cooling channel.
  • the cooling channel is connected substantially airtight to the air supply passage.
  • the cooling channel is formed substantially fluid-tight to the ambient atmosphere. According to this feature, not only a substantially fluid-tight connection of the air supply channel to the cooling channel, but also a substantially fluid-tight configuration of the cooling channel takes place. Also by this measure a uniform and basically pressure-loss-free flow through the cooling channel is favored with outside air.
  • the cooling channel is formed as an introduced into an insulation of the washing container embossing.
  • the rinsing container is typically formed insulated for thermal protection reasons. Typically, an insulation is used for this purpose, which is attached to the outside of the washing.
  • this already provided insulation of the washing container is equipped with an embossment, whereby the cooling channel according to the invention is formed.
  • the insulating material provides a sufficient fluid-tight design of the cooling channel.
  • the cooling channel is limited by the outer housing or a cover plate of the dishwasher.
  • a condensation dryer is proposed as a whole, which allows a fan-free design due to the above-described constructive features, so that in the intended use, a reduced energy consumption in an advantageous manner the result.
  • FIG. 1 can be seen in a purely schematic representation of a dishwasher in the design of a program-controlled household dishwasher.
  • the dishwasher 1 has, in a manner known per se, a housing 2 which terminates on the upper side by means of a cover plate 3.
  • the housing 2 accommodates a washing container 5, which in turn provides a washing compartment 6.
  • the washing compartment 6 serves to receive items to be cleaned.
  • the washing compartment 6 For loading the washing compartment 6 with items to be cleaned has the washing compartment 5 via a charging opening 7. This is by means of a Spülraumt 8 fluid-tight manner, the Spülraumt 8 is rotatably mounted about a horizontally extending pivot axis.
  • the dishes to be cleaned are treated with rinsing liquor, for which purpose the dishwasher 1 has a spraying device not shown in detail in the figures.
  • the dishwasher 1 further has a condensation dryer 26. In the intended use case, this ensures that outside air 10 is sucked in via the air inlet 14.
  • the aspirated outside air 10 is initially passed outside the side wall 15 and then outside the ceiling wall 16 of the washing container 5 as the air flow 11.
  • the air flow 11 passes after passing through the side wall 15 in a gap 4 below the cover plate 3, from where it is discharged as exhaust air 12 to the surrounding the dishwasher 1 atmosphere again.
  • rinsing takes place at the end of a cleaning program.
  • the rinsing liquor and thus also the rinse container 5 recorded items to be warmed up to, for example, 55 degrees Celsius.
  • the surface tension of the wash liquor is reduced.
  • the rinsing solution is pumped out.
  • the heat generated by the items to be washed evaporates the still remaining film of water.
  • the Spülraumluft consequently saturates gradually with water vapor. If the Spülraumluft is saturated, no more water from the dishes and baskets dry.
  • the Spülakuerwand 15 of the washing container 5 is cooled in the manner already described above.
  • the temperature of the Spülraumwand 15 drops as a result, which leads to a drop below the dew point of the moist Spülraum poverty.
  • the water vapor in the saturated Spülraum poverty can condense on the Spülraumwand 15.
  • the Spülraum poverty is no longer saturated and can thus absorb moisture again.
  • the above-described air duct is provided by the condensation dryer 26 provided according to the invention, which is designed according to the invention without blower.
  • the condensation dryer 26 has an air supply channel 17. This is preferably a plastic component which serves for air supply.
  • the air supply channel 17 has on the input side via a connection 18, with which the air supply channel is connected to the air inlet 14 formed in the base region 13 of the dishwasher 1.
  • the air supply channel 17 provides the air inlet side a diffuser-shaped extension 19 of the flow cross section ready. Because of this extension 19 it is ensured that inflowing outside air 10 is slowed down in its inflow velocity, so that pressure losses in the sucked-in outside air are largely prevented.
  • a channel section 25 connects to the diffuser-shaped extension 19, the flow cross-section of which is tapered starting from the air inlet-side extension 19 in the longitudinal direction 24. With reference to the drawing plane FIG. 3 this channel section 25 carries on the upper side a slot-shaped opening 20 which extends in the longitudinal direction 24 and via which, in the event of operation, the aspirated outlet air 10 is delivered as air flow 11.
  • At the air supply passage 17 fluidly connects a cooling channel 21.
  • the cooling channel 21 extends on the outside via a side wall 15 and the top wall 16 of the Spül organizations 5.
  • the cooling channel 21 is introduced as an embossing in a washing container 5 covering insulation 22 or the insulation 22 is shaped so that between washing 5 and insulation 22 of the cooling channel 21 is formed.
  • the insulation 22 is closed by the housing 2 or the cover plate 3.
  • the insulation 22 in particular has a shape or embossing, through which the further top-side profile of the cooling channel 21 is formed between the washing container 5 and the insulation 22.
  • the cooling channel 21 opens on the output side into an outlet opening 23 which is arranged, in particular, on the front side between the cover plate 3 and the rinsing container 5, and via which the airflow 11 passed through the cooling channel 21 is discharged as exhaust air 12.
  • the operation of the condensation dryer 26 is the following: About the air duct 17 outside air 10 is sucked and transferred into the cooling channel 21. This happens due to the structural design of the air duct 17 basically free of pressure loss. On the warm side wall 15 of the washing compartment 5, the air flow 11 is heated, which leads to a cooling of the side wall 15. The heated air flow 11 increases due to thermal reasons (chimney effect) in the cooling channel 21, whereby a negative pressure on the air inlet side, resulting in a steady sucking in of outside air 10. The heated and ascended in the cooling channel 21 air flow 11 is discharged as heated exhaust air 12 via the outlet opening 23.
  • the air guide is designed such that a connection to the room air only takes place on the air inlet side of the air supply duct 17 and on the air discharge side of the cooling duct 21 via the outlet opening 23.
  • the air heated by the waste heat from the washing compartment 4 rises and flows above the washing compartment 5 via the outlet opening 23. Due to the resulting negative pressure, cooler room air is sucked in, which heats up again, creating a chimney effect.
  • FIGS. 8 and 9 show an alternative and preferred embodiment of the air supply duct 17.
  • a shutter 27 is provided on the air inlet side of the air supply duct 17.
  • the closure flap is rotatably disposed within the nozzle 18.
  • An adjustment of the closure flap 27 takes place via an actuating drive 28 formed on the outside of the air feed channel 17.
  • the actuating drive 28 preferably has an electric motor (not further illustrated in the figures) which is connected to the process control of the dishwasher 1. This allows program-dependent control of the closure flap 27 by the dishwasher-side control device.
  • FIG. 8 shows the flap 27 in the open position. In this position, the flow cross-section of the air supply channel 17 is released. In contrast to this shows FIG. 9 the closure flap 27 in the closed position, in which position the flow cross-section of the air feed channel 17 is closed.
  • the closure flap 17 can be carried out by means of the condensation dryer 26 a proper drying.
  • the condensation dryer 26 is therefore akitiviert in the open position of the flap 27.

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  • Washing And Drying Of Tableware (AREA)
EP17156182.2A 2016-03-04 2017-02-15 Lave-vaisselle Active EP3213666B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016103921.7A DE102016103921A1 (de) 2016-03-04 2016-03-04 Geschirrspülmaschine

Publications (2)

Publication Number Publication Date
EP3213666A1 true EP3213666A1 (fr) 2017-09-06
EP3213666B1 EP3213666B1 (fr) 2019-11-13

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ID=58046550

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Application Number Title Priority Date Filing Date
EP17156182.2A Active EP3213666B1 (fr) 2016-03-04 2017-02-15 Lave-vaisselle

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EP (1) EP3213666B1 (fr)
DE (1) DE102016103921A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10863882B2 (en) 2018-08-13 2020-12-15 Electrolux Home Products, Inc. Appliance drying duct

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230046683A1 (en) * 2021-08-11 2023-02-16 Whirlpool Corporation Air barrier for door condensation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050866A (en) * 1960-06-13 1962-08-28 Gen Electric Dishwasher with drying means
DE3515592A1 (de) * 1985-04-30 1986-11-06 Bosch-Siemens Hausgeräte GmbH, 8000 München Geschirrspuelmaschine mit kondensflaeche zum niederschlagen des im spuelraum auftretenden dampfes
EP1825800A2 (fr) * 2006-02-22 2007-08-29 V-Zug AG Lave-vaisselle ayant un moyen pour retirer l'humidité de la cuve
DE102010002086A1 (de) * 2010-02-18 2011-08-18 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Trockner mit Adsorbereinheit sowie Verfahren zu seinem Betrieb
DE102013101861A1 (de) 2013-02-26 2014-08-28 Miele & Cie. Kg Geschirrspülautomat, insbesondere Haushaltsgeschirrspülmaschine
WO2014174784A1 (fr) * 2013-04-23 2014-10-30 パナソニックＩｐマネジメント株式会社 Appareil de lavage et de séchage de vaisselle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012223776A1 (de) * 2012-12-19 2014-06-26 BSH Bosch und Siemens Hausgeräte GmbH Sorptionsvorrichtung für ein Haushaltsgerät sowie entsprechendes Haushaltsgerät

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050866A (en) * 1960-06-13 1962-08-28 Gen Electric Dishwasher with drying means
DE3515592A1 (de) * 1985-04-30 1986-11-06 Bosch-Siemens Hausgeräte GmbH, 8000 München Geschirrspuelmaschine mit kondensflaeche zum niederschlagen des im spuelraum auftretenden dampfes
EP1825800A2 (fr) * 2006-02-22 2007-08-29 V-Zug AG Lave-vaisselle ayant un moyen pour retirer l'humidité de la cuve
DE102010002086A1 (de) * 2010-02-18 2011-08-18 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Trockner mit Adsorbereinheit sowie Verfahren zu seinem Betrieb
DE102013101861A1 (de) 2013-02-26 2014-08-28 Miele & Cie. Kg Geschirrspülautomat, insbesondere Haushaltsgeschirrspülmaschine
WO2014174784A1 (fr) * 2013-04-23 2014-10-30 パナソニックＩｐマネジメント株式会社 Appareil de lavage et de séchage de vaisselle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10863882B2 (en) 2018-08-13 2020-12-15 Electrolux Home Products, Inc. Appliance drying duct

Also Published As

Publication number Publication date
EP3213666B1 (fr) 2019-11-13
DE102016103921A1 (de) 2017-09-07

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