EP0920830A1 - Verfahren zur Geschirrtrocknung in einer elekrischen Haushaltsmaschine - Google Patents
Verfahren zur Geschirrtrocknung in einer elekrischen Haushaltsmaschine Download PDFInfo
- Publication number
- EP0920830A1 EP0920830A1 EP98122092A EP98122092A EP0920830A1 EP 0920830 A1 EP0920830 A1 EP 0920830A1 EP 98122092 A EP98122092 A EP 98122092A EP 98122092 A EP98122092 A EP 98122092A EP 0920830 A1 EP0920830 A1 EP 0920830A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air flow
- air
- fresh air
- moist
- fan wheel
- 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
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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
- A47L15/486—Blower 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
- A47L15/488—Connections of the tub with the ambient air, e.g. air intake or venting arrangements
Definitions
- the invention relates to a method for drying dishes in an electric Household machine, in particular a dishwasher, according to the preamble of claim 1.
- EP 0 521 815 B1 describes a dishwasher with one through one Door lockable wash cabinet and with a wash cabinet with the ambient air connecting vent opening disclosed.
- the mixing chamber is a variable mixed air ratio between the supplied Fresh air and the moist air extracted from the wash cabinet in the sense of a reduction of the fresh air portion and an increase in the moist air portion during the duration of the dish drying with a constant mixed air volume flow rate adjustable.
- the object of the invention is to provide a method of the type mentioned in the introduction, in which with little space and only little design effort optimal dish drying is achieved. This is of particular value for a short program sequence for drying dishes with an optimal one Steam extraction from the wash cabinet of the household machine.
- the fan wheel on the one side only axially Moist air, while at around 180 ° the fresh air in turn axially Fan wheel is fed. Because of this separation of air flows up to immediately before entering the fan wheel, it also remains in the fan wheel during separation between moist air and fresh air. Both air flows are from the fan wheel radially ejected and only unite in the mixed air outlet duct.
- the funds for recruitment the amount of air flow in the humid air and in the fresh air and also the drive the impeller by a single, common drive motor become. This means that the fan wheel, the moist air panel and the fresh air panel driven or controlled by a single drive motor. This means that on the control side only one consumer over the entire Drying time is to be controlled. This will control and Wiring effort significantly reduced.
- the panels can be reset to their initial position that it depends on the position of the door of the dishwasher. Alternatively can also reset the panels in the starting position from the drive motor being controlled. This means that the provision is independent in such a case on the position of the appliance door, namely vertically or horizontally. An example of this would be that when the drive motor is switched on, the drive is coupled to the aperture. On the other hand, when the drive motor is switched off also the drive is disengaged from the panel, which means a return to the starting position means.
- a targeted separation the moist air flow and the fresh air flow through a heat exchanger or a heat exchanger plate is brought about.
- This will remove moisture from the air on the rinsing tank to the fan wheel on one side of the heat exchanger plate, e.g. can be a glass plate or a metal plate that is damp Air passed and on the other side of this heat exchanger plate which from the Fresh air drawn in from the surroundings.
- Part of the water vapor in the Moist air condenses on the steam side of the heat exchanger plate, so that Condensate can be returned to the rinsing tank.
- a program-controlled dishwasher 1 is shown in sections in a very greatly simplified representation in FIG.
- This dishwasher 1 as an electrical household machine has a washing compartment 2 or washing container and an appliance door 3 that can be closed the washing compartment 2 during the program section Drying ", the washing compartment 2, which is closed by the appliance door 3, is connected in terms of flow technology to the ambient air through the outlet opening 4 in the appliance door 3.
- a fan wheel or a blower 5 can be rotated about the axis 6 in the appliance door 3 installed, which is driven by a drive motor 7.
- the fan wheel 5 On the suction side the fan wheel 5 opens a channel 8 for the moist air from the wash cabinet, the is aligned axially to the suction side of the fan wheel 5 and in the radially inner Area of the fan wheel 5 is located.
- the channel 8 opens axially immediately before Intake side of the fan wheel 5.
- the intake side is located radially on the inside Area of the fan wheel 5, from where the air sucked in when the Fan wheel 5 is conveyed radially outwards by the guide elements.
- a second channel 9 for the fresh air also opens on the intake side of the Fan wheel 5 and in a radially inner area, the channel 8 by about 180 ° is arranged opposite.
- the channels 8 and 9 are performed separately both open immediately before entering fan wheel 5.
- the air flow amounts of the sucked-in moist air are 11 and fresh air 12 changeable by special facilities.
- These facilities consist of panels 14 and 15, both of which are also like fan wheel 5 can be controlled or driven by the common drive motor 7.
- Gear elements between the drive motor 7 and the units can for example V-belts 16 or other suitable and known transmission elements, such as gears, friction gear or others used become.
- the control panel is inserted into the through opening by suitable control elements of the channel 9 moved for the fresh air.
- the aperture 15 through control elements in the through opening of the channel 8 for the Moist air moves.
- the aperture 14 is formed, for example, as a slide is, the aperture 15 in the channel 8 for the moist air, for example from a an axis movable flap. This flap 15 is controlled against the Force of an inserted compression spring.
- the aperture 14 for the fresh air 12 and the aperture 15 for the moist air 11 are continuously via the drive motor 7 and intermediate control means driven, which allows better adaptation to a continuous Drying process in the wash cabinet is achieved.
- the aperture 15 in the duct for the moist air is expediently only slight be open while at the same time the aperture 14 in the channel 9 for the fresh air 12 is completely or almost completely open. Because especially in the early stages of drying dishes the moisture content in the moist air from the wash cabinet is very high, is achieved by this different aperture that the Process air highly enriched with moisture through the fresh air to a moisture level is lowered, in which there is no steam and no vapors at the ventilation opening 4 of the dishwasher 1 can be seen. Because of the special Control is a change in the humidity / fresh air ratio with a variable or constant mixed air volume flow possible, the moist air flow and / or the fresh air flow in parallel or in series are continuously changeable.
- the special control also allows the mixed air volume flow to change a constant moist air / fresh air ratio. And finally the control is set up in such a way that a change in the Mixed air volume flow is conceivable if the humidity / fresh air ratio the sucked in wet air 11 and fresh air 12 changed.
- the volume flow of the moist air and also the volume flow of the fresh air can according to the controls used over time Drying process become larger or smaller. That point of view is Particularly important when the energy supply is cycled via the heating.
- control of the diaphragms 14 and 15 is designed such that at the end of a drying process, depending on the choice of the operator, the screens 14 and 15 remain open or closed. All control processes for the Apertures 14 and 15 are made via the single drive motor.
- the Resetting the diaphragms 14 and 15 in the starting position can depend on the Installation conditions of the appliance door 3 (vertical / horizontal) automatically or also done by the drive motor.
- Another improvement in the drying process and in particular an improvement in the exit of Mixed air from the dishwasher 1 is shown schematically in FIGS. 3 and 4 shown.
- the channel 9 for the fresh air in front of the fan wheel 5 and the channel 13 for the mixed air after the fan wheel 5 on at least one section are arranged side by side.
- a heat exchanger 18 e.g. in shape a metal or glass plate.
- This heat exchanger 18 causes Steam condenses from the mixed air in duct 13, which passes through as condensate a channel 19 or hose is pumped out or withdrawn.
- the fresh air warms up as it passes by the heat exchanger, causing it a greater absorption capacity for the moisture of the sucked-in moist air receives.
- FIG 4 is shown schematically that a heat exchanger 20 as a metal plate or as a glass plate between the channel 8 for the moist air 11 and the channel can be used for the fresh air 12. In this case, it will take place before entry condensation of the moist air and the fresh air into the fan wheel 5, whereby the moisture content of the moist air in the fan wheel 5 and after Fan wheel 5 is significantly reduced. In this case too, the condensed water formed through a channel or through a special hose Dishwasher 2 supplied to the dishwasher 1.
- FIGS. 3 and 4 can such heat exchangers in the mixed air duct as well as in the moist air duct for example be used as metal bars or grids, on which the hot Steam precipitates and condenses.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
- Der Mischluft-Volumenstrom wird bei gleichbleibendem oder auch bei veränderbarem Feuchtluft-/Frischluftverhältnis verändert.
- Das Feuchtluft-/Frischluftverhältnis wird bei gleichbleibendem Mischluft-Volumenstrom verändert, wobei der Feuchtluftstrom- und/oder der Frischluftstrom verändert werden können. Eine solche Veränderung ist zeitlich parallel und auch seriell möglich.
- Figur 1
- schematische Darstellung der Luftstromführungen
- Figur 2
- eine perspektivische Darstellung des Lüfterrades mit Gehäuse und Luftstromführung
- Figur 3
- eine schematische Darstellung der Luftstromführungen mit Wärmetauscher
- Figur 4
- eine schematische Darstellung der Luftstromführungen mit Wärmetauschereinrichtung anderer Bauart.
Claims (11)
- Verfahren zur Geschirrtrocknung in einer elektrischen Haushaltsmaschine, insbesondere Geschirrspülmaschine, bei dem Feuchtluft aus einem Spülraum der Haushaltsmaschine abgesaugt und unter Mischung mit angesaugter Frischluft mittels eines Gebläses oder Lüfterrades an die Umgebungsluft abgegeben wird, wobei die Volumina der Frischluft- und der Feuchtluftströme entsprechend einem wählbaren Mischungsverhältnis einstellbar sind,
dadurch gekennzeichnet,daß die Feuchtluft (8) und die Frischluft (9) in getrennten Strömen dem Lüfterrad (5) axial direkt zugeführt und im Lüfterrad (5) im wesentlichen getrennt voneinander transportiert und getrennt radial ausgestoßen werden, und daß eine Mischung der beiden Luftströme in einem dem Lüfterrad (5) nachgeschalteten gemeinsamen Mischluftaustrittskanal (13) erfolgt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet,daß die Mittel (14,15) für die Einstellungen der Volumina im Feuchtluftsrom und im Frischluftstrom und der Antrieb des Lüfterrades (5) durch einen gemeinsamen Antriebsmotor (7) beaufschlagt werden. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,daß die Mittel (14,15) für die Einstellungen der Volumina im Feucht- und im Frischluftstrom kontinuierlich angetrieben werden. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,daß der Mischluftvolumenstrom, der Feuchtluftstrom und der Frischluftstrom über die Trocknungszeit variabel gestaltet werden. - Verfahren nach einem der vorgenannten Ansprüche,
dadurch gekennzeichnet,daß die Mittel für die Einstellungen der Volumina der Frischluft und der Feuchtluft derart angesteuert werden, daß zumindest eines der Mittel (14,15) am Ende des Trocknungsvorganges geöffnet oder geschlossen sein kann. - Verfahren nach einem der vorgenannten Ansprüche,
dadurch gekennzeichnet,daß der Feuchtluftstrom vor Eintritt in das Lüfterrad oder Gebläse (5) einem Wärmetauscher zugeführt wird. - Verfahren nach einem der vorgenannten Ansprüche,
dadurch gekennzeichnet,daß der Kanal (8) für den Feuchtluftstrom und der Kanal (9) für den Frischluftstrom durch eine Wärmetauscherplatte (18) voneinander räumlich getrennt werden, wobei das sich im Kanal für den Feuchtluftstrom bildende Kondensat in den Spülraum (2) der Haushaltsmaschine zurückgeführt wird. - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,daß der sich nach dem Lüfterrad oder Gebläse (5) bildende Mischluftstrom einem Wärmetauscher zugeführt wird. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet,daß der Kanal für den Mischluftstrom von dem Kanal für den Frischluftstrom durch eine Wärmetauscherplatte räumlich getrennt wird, wobei das sich im Mischluftstrom bildende Kondensat aufgefangen und in den Spülraum der Haushaltsmaschine zurückgeführt wird. - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,daß der Feuchtluftstrom und/oder der Frischluftstrom im zeitlichen Verlauf im Volumen veränderlich ist. - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,daß die Mittel (14,15) für die Volumeneinstellungen im Feuchte- und/oder im Frischluftstrom durch Getriebeelemente zwangsgesteuert werden, die von einem Antriebsmotor (7) beaufschlagt werden.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19753535 | 1997-12-03 | ||
DE19753535 | 1997-12-03 | ||
DE19805227A DE19805227A1 (de) | 1997-12-03 | 1998-02-10 | Verfahren zur Geschirrtrocknung in einer elektrischen Haushaltsmaschine |
DE19805227 | 1998-02-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0920830A1 true EP0920830A1 (de) | 1999-06-09 |
EP0920830B1 EP0920830B1 (de) | 2002-09-04 |
Family
ID=26042114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980122092 Expired - Lifetime EP0920830B1 (de) | 1997-12-03 | 1998-11-21 | Verfahren zur Geschirrtrocknung in einer elekrischen Haushaltsmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0920830B1 (de) |
ES (1) | ES2183274T3 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1127532A2 (de) * | 2000-02-25 | 2001-08-29 | Bonferraro S.p.A. | Geschirrspülmaschine mit einstellbarem Trocknungsgang |
WO2002074154A1 (en) * | 2001-03-20 | 2002-09-26 | Eltek S.P.A. | Ventilation system for household appliances, in particular for washing machines |
WO2008134141A1 (en) * | 2007-04-25 | 2008-11-06 | Illinois Tool Works Inc. | Humidity reducing exhaust duct for dishwasher |
EP2117413A1 (de) * | 2007-08-31 | 2009-11-18 | Lg Electronics Inc. | Geschirrspülmaschine |
WO2013106624A1 (en) * | 2012-01-13 | 2013-07-18 | Illinois Tool Works Inc. | Washing appliance with improved air handling system |
US20160022115A1 (en) * | 2014-07-23 | 2016-01-28 | Whirlpool Corporation | Dishwasher with air system |
EP3020319A1 (de) * | 2014-11-13 | 2016-05-18 | Indesit Company S.p.A. | Haushaltsgeschirrspülmaschine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4657036A (en) * | 1983-12-12 | 1987-04-14 | Design & Manufacturing Corporation | Combination water inlet, vent stack, blower and blower housing assembly for an automatic dishwasher |
DE4404113A1 (de) * | 1993-02-09 | 1994-08-11 | Bitron A Spa | Vorrichtung für die gesteuerte Evakuierung von Dampf aus der Waschkammer einer Geschirrspülmaschine |
-
1998
- 1998-11-21 EP EP19980122092 patent/EP0920830B1/de not_active Expired - Lifetime
- 1998-11-21 ES ES98122092T patent/ES2183274T3/es not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4657036A (en) * | 1983-12-12 | 1987-04-14 | Design & Manufacturing Corporation | Combination water inlet, vent stack, blower and blower housing assembly for an automatic dishwasher |
DE4404113A1 (de) * | 1993-02-09 | 1994-08-11 | Bitron A Spa | Vorrichtung für die gesteuerte Evakuierung von Dampf aus der Waschkammer einer Geschirrspülmaschine |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1127532A3 (de) * | 2000-02-25 | 2002-06-19 | Bonferraro S.p.A. | Geschirrspülmaschine mit einstellbarem Trocknungsgang |
EP1127532A2 (de) * | 2000-02-25 | 2001-08-29 | Bonferraro S.p.A. | Geschirrspülmaschine mit einstellbarem Trocknungsgang |
WO2002074154A1 (en) * | 2001-03-20 | 2002-09-26 | Eltek S.P.A. | Ventilation system for household appliances, in particular for washing machines |
US7909939B2 (en) | 2007-04-25 | 2011-03-22 | Illinois Tool Works, Inc. | Humidity reducing exhaust duct for dishwasher |
WO2008134141A1 (en) * | 2007-04-25 | 2008-11-06 | Illinois Tool Works Inc. | Humidity reducing exhaust duct for dishwasher |
EP2117413A4 (de) * | 2007-08-31 | 2012-06-20 | Lg Electronics Inc | Geschirrspülmaschine |
EP2117413A1 (de) * | 2007-08-31 | 2009-11-18 | Lg Electronics Inc. | Geschirrspülmaschine |
US8291922B2 (en) | 2007-08-31 | 2012-10-23 | Lg Electronics Inc. | Dish washing machine |
WO2013106624A1 (en) * | 2012-01-13 | 2013-07-18 | Illinois Tool Works Inc. | Washing appliance with improved air handling system |
US10024561B2 (en) | 2012-01-13 | 2018-07-17 | Illinois Tool Works Inc. | Washing appliance with improved air handling system |
US20160022115A1 (en) * | 2014-07-23 | 2016-01-28 | Whirlpool Corporation | Dishwasher with air system |
US10595706B2 (en) * | 2014-07-23 | 2020-03-24 | Whirlpool Corporation | Dishwasher with air system |
EP3020319A1 (de) * | 2014-11-13 | 2016-05-18 | Indesit Company S.p.A. | Haushaltsgeschirrspülmaschine |
Also Published As
Publication number | Publication date |
---|---|
ES2183274T3 (es) | 2003-03-16 |
EP0920830B1 (de) | 2002-09-04 |
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