EP0862893B1 - Geschirrspülmaschine - Google Patents

Geschirrspülmaschine Download PDF

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Publication number
EP0862893B1
EP0862893B1 EP98100574A EP98100574A EP0862893B1 EP 0862893 B1 EP0862893 B1 EP 0862893B1 EP 98100574 A EP98100574 A EP 98100574A EP 98100574 A EP98100574 A EP 98100574A EP 0862893 B1 EP0862893 B1 EP 0862893B1
Authority
EP
European Patent Office
Prior art keywords
valve disc
fan
dish
washing machine
extraction
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.)
Expired - Lifetime
Application number
EP98100574A
Other languages
English (en)
French (fr)
Other versions
EP0862893A2 (de
EP0862893A3 (de
Inventor
Harry Rapke
Josef Buser
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP0862893A2 publication Critical patent/EP0862893A2/de
Publication of EP0862893A3 publication Critical patent/EP0862893A3/de
Application granted granted Critical
Publication of EP0862893B1 publication Critical patent/EP0862893B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L15/48—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
    • A47L15/48—Drying arrangements
    • A47L15/486—Blower arrangements

Definitions

  • the invention relates to a dish-washing machine according to the preamble of independent claim 1.
  • a dish-washing machine of this kind is known from DE 296 01 313 U1.
  • a simple blocking device ensures that the extraction line is only opened when the fan is switched on, and is closed again automatically when the fan is switched off, and is thus controlled without intervention in the control programme.
  • the hot vapour-saturated air sucked out of the washing area is only mixed in the fan, located in the engine area, and the exit channel with a stream of dry air. The consequence of this is that the hot vapour-saturated air condenses in the extraction line to the fan. This condensate must then be caught by means of a condensate trough from which it can then evaporate between the washing cycles.
  • the object of the invention is, on a dish-washing machine of the type mentioned initially, to prevent the formation of condensation in the extraction line to the fan.
  • the relative air humidity is considerably reduced before it enters the extraction line and thus the formation of condensation in the extraction line is prevented.
  • the air which is taken in via the additional suction aperture of the blocking device ohe roof of the washing area is warm and dry, which has a positive effect on the reduction of the air humidity in the mixed air which is led to the extraction line. Extraction can be carried out with a simple one or two-stage fan. A condensation trough is no longer necessary.
  • the extraction line begins in a housing pan which surrounds the extraction opening with a connection piece and forms a valve seat for the valve disc serving as a valve body, n that the additional suction aperture is arranged above the valve disc on the side of the housing pan facing the extraction line.
  • valve disc has an annular web which is approximately triangular in cross-section on the lower side facing the valve seat, and this web closes with its conical lower side the valve seat of the housing pan.
  • valve disc The adjusting movement of the valve disc is made operationally reliable by the valve disc being provided, on its lower side facing the valve seat, with guide webs which guide the valve disc so as to be untiltable when a connection piece of the housing pan is adjusted, and by the valve disc being provided on the upper side away from the valve seat with spacer elements to limit the adjusting movement.
  • the mixing ratio is determined by the proportion of the secondary air stream being established by the cross-section of the additional suction aperture.
  • the fan prefferably configured either one or two-stage, there being no suction aperture for secondary air on the one-stage fan, and on the second-stage fan the diameter of this suction aperture can be reduced; then, in addition to the use of an inexpensive fan, it is also possible to reduce the amount of noise during the extraction process.
  • a stream of air is formed in the washing area or chamber 40 of the dish-washing machine, which air involves a blocking device 10 arranged in the roof region of the washing area 40 and an extraction conduit or line 16 leading to the fan 30, as well as the fan 30.
  • the fan 30 is switched on, hot vapour-saturated air FL is sucked out of the washing area 40 via a suction channel 20, whilst, when the fan 30 is switched off, the blocking device 10 automatically closes the extraction line, as is also shown with the aid of Figs. 2 and 3.
  • an electrical control of the blocking device 10 can be dispensed with.
  • warm dry air TL is sucked in via an additional suction channel 24 of the blocking device 10, air which has gathered in the roof region outside the washing area 40.
  • the two streams of air FL and TL are mixed with one another before they go into the extraction line 16 in the blocking device 10, with the result that the air humidity is considerably reduced. No condensation can any longer form in the extraction line 16, and thus, in the region of the fan 30, no condensation trough is necessary either.
  • the fan 30 can be configured either one-stage or two-stage, it not being necessary to mix in any secondary air NL with a one-stage fan 30. On a two-stage fan 30, the suction cross-section for the secondary air NL can be chosen to be small, which leads to a reduction in noise during the extraction process.
  • the extraction line 16 begins in a housing pan 11 which is arranged in the roof region of the washing area 40 and is open towards the washing area 40 with a connection piece 18, and forms an inlet aperture 15, through which hot, vapour-saturated air is extracted from the washing chamber.
  • a valve seat 19 is formed on which a valve disc 13 sits tightly as a valve body, when the fan 30 is switched off, on the basis of its own weight.
  • the valve disc 13 carries an essentially triangular annular web 23 on its lower side facing the valve seat 19.
  • FIG. 2 shows the closed position of the blocking device 10, guide webs 12 arranged on the lower side of the valve disc 13 being introduced into the connection piece 13.
  • spacer elements 17 are provided which limit the lifting stroke of the valve disc 13, as Fig. 3 shows. This ensures that, when the valve disc 13 is raised as the fan 30 is switched on, the valve disc 13 is guided without tilting and does not jam.
  • the guide webs 12 project partially into the connection piece 18 of the housing pan 11, with the result that the valve disc 13 can also not be pulled into the extraction line 16.
  • the housing pan 11 On the side away from the extraction line 16, the housing pan 11 has an additional suction aperture 24 for warm dry air TL from the region below the roof of the washing area 40.
  • the extraction aperture 15 is opened and connects with the additional suction aperture 24.
  • the extraction aperture 15 is covered towards the washing area 40 by means of a splash-guard disc 21 which forms a suction channel 20 on the side of the housing pan 11 with the additional suction aperture 24, with the result that, immediately in the entrance region, the air streams TL and FL are mixed with one another and reach the extraction line 16 already mixed.
  • connection piece 18 of the housing pan 11 is fixed on to the washing container 41 by means of a nut 22, a sealing ring 14 taking care of the sealing.
  • the splash-guard disc 21 can be screwed on to the nut 22. This splash-guard disc 21 prevents water jets, occurring during the cleaning and clear rinsing cycles, from lifting the valve disc 13 from the valve seat 19, and thus the extraction line 16 from being released when this is not desired.
  • the blocking device 10 works without electrical control.
  • the valve disc 13 is only controlled by the suction air stream generated by the fan 30.
  • the washing process runs without loss of heat and with very little energy, humidity, smell and noise.
  • the mixed air which reaches the extraction line 16 only has a little humidity and can no longer condense. A condensation collecting trough in the region of the fan 30 is no longer necessary.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (7)

  1. Geschirrspülmaschine mit einer Waschkammer (40), die an das Geschirr angepasst ist und in der ein Ansaugkanal (16) angeordnet ist, über den ein heißdampfgesättigter Luftstrom (FL) mittels eines Ventilators (30) aus der Waschkammer angesaugt wird, wobei eine Sperrvorrichtung (10) vorgesehen ist, die am Eingang des Ansaugkanals im Dachbereich der Waschkammer angeordnet und mit einer Eingangsöffnung (15) sowie einer als Sperrelement wirkenden Ventilscheibe (13) versehen ist, und wobei die Ventilscheibe (13) bei eingeschaltetem Ventilator (30) die Eingangsöffnung (15) freigibt und bei ausgeschaltetem Ventilator (30) in die Anfangsposition aufgrund ihres Eigengewichts zurückkehrt und die Eingangsöffnung (15) schließt,
    dadurch gekennzeichnet, dass die Sperrvorrichtung (10) mit einem zusätzlichen Ansaugkanal (24) versehen ist, der bei eingeschaltetem Ventilator (30) und bei abgehobener, die Eingangsöffnung (15) nicht sperrender Ventilscheibe (13) mit der Eingangsöffnung (15) in Verbindung steht, wobei ein am Dach der Waschkammer (40) vorhandener, warmer, trockener Luftstrom in den zusätzlichen Ansaugkanal (24) eingesogen und dem aus der Waschkammer (40) angesaugten, heißdampfgesättigten Luftstrom (FL) zugefügt wird und wobei die beiden Luftströme (FL, TL) vor dem Eintritt in den Ansaugkanal (16) gemischt werden.
  2. nach Anspruch 1,
    dadurch gekennzeichnet, dass der Ansaugkanal (16) in einer Gehäusemulde (11) beginnt, die die Eingangsöffnung (15) umgibt und die ein Verbindungsstück (18) aufweist, das einen Ventilsitz (19) für die als Ventilkörper dienende Ventilscheibe (13) bildet, und dass der zusätzliche Ansaugkanal (24) über der Ventilscheibe (13) angeordnet ist.
  3. Geschirrspülmaschine nach Anspruch 2,
    dadurch gekennzeichnet, dass die den heißdampfgesättigten Luftstrom durchlassende Eingangsöffnung (15) in Ansaugrichtung am Vorderende der Ventilscheibe (13) mittels einer Spritzschutzscheibe (21) abgedeckt ist, die zusammen mit dem Verbindungsstück (18) der Gehäusemulde (11) auf der Seite mit der zusätzlichen Ansaugöffnung (24) einen Ansaugkanal (20) für den heißdampfgesättigten Luftstrom (FL) bildet.
  4. Geschirrspülmaschine nach einem der Ansprüche 2 und 3,
    dadurch gekennzeichnet, dass die Ventilscheibe (13) auf ihrer dem Ventilsitz (19) zugewandten Unterseite einen Ringsteg (23) aufweist, der im Querschnitt annähernd dreieckförmig ist und mit seiner konischen Unterseite den Ventilsitz (19) der Gehäusemulde (11) schließt.
  5. Geschirrspülmaschine nach einem der Ansprüche 2 bis 4,
    dadurch gekennzeichnet, dass die Ventilscheibe (13) auf ihrer dem Ventilsitz (19) zugewandten Unterseite Führungsstege (12) aufweist, die die Ventilscheibe (13) derart führen, dass sie nicht schräggestellt werden kann, wenn das Verbindungsstück (18) der Gehäusemulde (11) eingestellt wird, und dass die Ventilscheibe (13) auf ihrer dem Ventilsitz (19) abgewandten Oberseite mit Abstandselementen (17) zur Begrenzung der Einstellbewegung versehen ist.
  6. Geschirrspülmaschine nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass die Größe des warmen, trockenen Luftstroms (TL) durch den Querschnitt des zusätzlichen Ansaugkanals (24) festgelegt ist.
  7. Geschirrspülmaschine nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, dass der Ventilator (30) einstufig oder zweistufig ausgebildet ist, wobei bei der einstufigen Ausbildung keine Ansaugöffnung für die Sekundärluft (NL) vorhanden ist und bei der zweistufigen Ausbildung eine kleine Öffnung vorgesehen ist, durch die die Sekundärluft (NL) in den zweistufigen Ventilator (30) eingesogen werden kann.
EP98100574A 1997-02-06 1998-01-15 Geschirrspülmaschine Expired - Lifetime EP0862893B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19704430 1997-02-06
DE19704430A DE19704430A1 (de) 1997-02-06 1997-02-06 Geschirrspülmaschine

Publications (3)

Publication Number Publication Date
EP0862893A2 EP0862893A2 (de) 1998-09-09
EP0862893A3 EP0862893A3 (de) 1998-10-21
EP0862893B1 true EP0862893B1 (de) 2002-10-23

Family

ID=7819438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98100574A Expired - Lifetime EP0862893B1 (de) 1997-02-06 1998-01-15 Geschirrspülmaschine

Country Status (3)

Country Link
EP (1) EP0862893B1 (de)
DE (2) DE19704430A1 (de)
ES (1) ES2185066T3 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106514A1 (de) * 2001-02-13 2002-08-29 Miele & Cie Trocknungsgebläse für eine Geschirrspülmaschine
US7887643B2 (en) 2005-04-18 2011-02-15 Illinois Tool Works, Inc. Dishwasher with counter-convection air flow
KR101356513B1 (ko) * 2007-08-31 2014-01-29 엘지전자 주식회사 식기세척기
EP2583615B1 (de) * 2011-10-19 2013-12-11 Miele & Cie. KG Geschirrspülautomat
WO2013106624A1 (en) * 2012-01-13 2013-07-18 Illinois Tool Works Inc. Washing appliance with improved air handling system
EP3020319B1 (de) * 2014-11-13 2023-02-22 Whirlpool EMEA S.p.A. Haushaltsgeschirrspülmaschine
EP3318286A1 (de) * 2016-11-04 2018-05-09 MELAG Medizintechnik oHG Reinigungs- und desinfektionsgerät sowie verfahren zum desinfizieren eines von einem fluid durchströmbaren bereichs eines solchen geräts
TR201708566A2 (tr) * 2017-06-09 2018-12-21 Arcelik As Kurutma performansi i̇yi̇leşti̇ri̇len bi̇r bulaşik maki̇nasi
KR102527575B1 (ko) * 2018-02-08 2023-04-28 엘지전자 주식회사 식기세척기
TR201819228A2 (tr) * 2018-12-12 2020-06-22 Arcelik As Fan cebi̇ i̇çeren bi̇r bulaşik maki̇nasi
CN114305282B (zh) 2020-09-30 2025-12-12 博西华电器（江苏）有限公司 家用洗碗机
DE102020212345A1 (de) 2020-09-30 2022-03-31 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine mit zumindest einem Luftauslass

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195419A (en) * 1978-09-06 1980-04-01 The Maytag Company Air inlet for a dishwashing apparatus
DE3842997C2 (de) * 1988-12-21 1994-09-01 Licentia Gmbh Geschirrspülmaschine
DE9106098U1 (de) * 1991-05-17 1991-09-12 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Senkwerkzeug
ATE118326T1 (de) * 1991-07-02 1995-03-15 Miele & Cie Geschirrspülmaschine mit einer den spülraum mit der umgebungsluft verbindenden entlüftungsöffnung oder dergl.
DE29601313U1 (de) * 1996-01-26 1996-06-13 Bauknecht Hausgeräte GmbH, 70565 Stuttgart Geschirrspülmaschine

Also Published As

Publication number Publication date
ES2185066T3 (es) 2003-04-16
EP0862893A2 (de) 1998-09-09
DE69808820D1 (de) 2002-11-28
EP0862893A3 (de) 1998-10-21
DE19704430A1 (de) 1998-08-13
DE69808820T2 (de) 2003-07-24

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