EP0374616B1 - Geschirrspülmaschine - Google Patents

Geschirrspülmaschine Download PDF

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Publication number
EP0374616B1
EP0374616B1 EP89122636A EP89122636A EP0374616B1 EP 0374616 B1 EP0374616 B1 EP 0374616B1 EP 89122636 A EP89122636 A EP 89122636A EP 89122636 A EP89122636 A EP 89122636A EP 0374616 B1 EP0374616 B1 EP 0374616B1
Authority
EP
European Patent Office
Prior art keywords
working container
fan
air channel
control
dishwasher according
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
EP89122636A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0374616A1 (de
Inventor
Heinz Käfferlein
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0374616A1 publication Critical patent/EP0374616A1/de
Application granted granted Critical
Publication of EP0374616B1 publication Critical patent/EP0374616B1/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

Definitions

  • the invention relates to a dishwasher according to the preamble of claim 1.
  • a known dishwasher of this type there is an outside air duct and a ventilation duct in a door closing the working container, both ducts being assigned a fan wheel of a common blower motor.
  • the outside air duct ends on both sides in the free atmosphere, while the secondary air duct is connected to the interior of the working container via a ventilation opening and opens into the outside air duct after the fan.
  • the mouth of the ventilation channel can be closed by means of a controlled closure flap, and is open if the fan is to be switched on for the dishes cleaned in the working container during the drying cycle to be carried out after the rinsing cycles have ended.
  • the fan wheels of the fan then convey air through both channels, with the moisture-laden exhaust air extracted from the working container mixing with the fresh air from the fresh air channel. This prevents condensation from forming in the channels and concentrated steam from escaping into the installation area of the dishwasher.
  • a specially equipped fan with two fan wheels is required, which also requires a specially adapted fan housing.
  • a door that closes a work container has a vertical outside air duct that opens out freely at its lower and upper ends. In the area of its upper end, a vent opening, which communicates with the working container, opens into this outside air duct.
  • a freely movable flap valve is assigned to the ventilation opening, which opens automatically if there is overpressure in the working container.
  • a fan sits under the bottom wall of the working container, which sucks in fresh air from the machine base and blows it directly into the working container via an exhaust duct with an integrated heating element.
  • all the air conveyed by the fan flows through the working container and the ventilation opening into the outside air duct during the drying cycle, in which a free portion of fresh air from the outside air duct mixes with the moist air emerging from the working container.
  • the mixing ratio between moist exhaust air from the working container and the outside air duct must be such that at the beginning of the drying cycle the very high moisture content of the flushing container exhaust air does not lead to any condensation of the water vapor contained therein at the blow-out point.
  • the amount of air conveyed by the fan must be limited so that there are no unpleasant air drafts for an operator at the outlet end for the mixed air.
  • the invention has for its object to take measures in a dishwasher according to the preamble of claim 1, by which an effective removal of steam and moisture from the working container is possible with little effort.
  • the blow-out air is pressed both into the outside air duct and into the secondary air duct opening into the working container using a simple fan.
  • the fresh air thus blown into the working container can then sweep past the damp, warmed up dishes and absorb moisture, which then enters the outside air duct through the ventilation opening arranged in the upper region of the working container and mixes there with the conveyed fresh air.
  • the distribution of the air flow conveyed by the fan can be set rigidly per se.
  • the fan is followed by a flow divider chamber with an outlet for the outside air duct and an outlet for the secondary air duct, in which a control flap is provided for changing the amount of air flowing out through the ducts.
  • the control flap is controlled so that a smaller amount of fresh air flows into the working container than in the advanced drying process.
  • the control flap can be controlled depending on the moisture content of the air after the opening of the ventilation opening. However, it can also be based on experience can be controlled depending on the time.
  • a control is assigned to the control flap, which can be designed as an electric motor, as a magnet or as an expansion regulator with electrically controllable heating.
  • a heating element can also be arranged in the secondary air duct, which can also be switched depending on the humidity or time-dependent by the program switch controlling the machine program.
  • the ventilation opening is provided with a controllable closure flap to prevent the outflow of moist air outside of the drying cycle.
  • a housing 2 of a household dishwasher surrounds a working container 3, in which spray arms which are rotatably mounted in horizontal planes are arranged below dish racks 4 which do not hold the dishes to be cleaned and which hold dishes.
  • the spray arms are supplied with flushing liquid via lines 5, which are sucked off by a circulation pump 6 from a drain pan 8 let into the bottom 7 of the working container 3 and conveyed individually or together into the lines to the spray arms 4 via a reversing device, not shown.
  • Within the device housing 2 there is a fan 9 in the area below the base 7, the air intake opening 10 of which opens freely in the device housing 2. The fan thus draws in air during operation, which is preheated by the circulation pump and other heat-generating components.
  • a flow divider chamber 12 adjoins the outlet port 11 of the vent door 9, from which a secondary air duct 13 and a fresh air duct 14 branch off.
  • the secondary air duct 13 opens into the work area 3 in the lower area, preferably below the lower spray arm but above the maximum liquid level that occurs, while the fresh air duct 14 leads upwards outside the work area 3, where one in the upper area, in particular above the upper spray arm 4 in the work area 3 provided ventilation opening 15 opens into the fresh air duct 14.
  • the fresh air duct 14 is designed in the region of the vent opening 15 as a mixing chamber 16, from which an exhaust air duct 17 is preferably guided to the front in the region of the door associated with the working container 3 and opens out there freely via an outlet opening.
  • the vent opening 15 is assigned a closure flap 18 which can be actuated by a drive device, in particular an electromagnet 19.
  • a control flap 20 is additionally arranged in the flow dividing chamber 12, with which the flow path to one of the channels 13, 14 can be narrowed alternately. In this case, the control flap 20 is connected to a control 21, via which the control flap can be controlled in a functionally appropriate manner.
  • the dishes present in the working container 3 are dried in a subsequent drying cycle.
  • the otherwise closed closure flap 16 is brought into the open position via the control magnet 19 and the fan 9 is simultaneously started up.
  • fresh air is conveyed via the secondary air duct 13 into the working container 3 and the outside air duct 14.
  • the fresh air conveyed into the working container 3 presses a corresponding amount of moisture-laden exhaust air from the working container 3 via the ventilation opening 15 into the mixing chamber 16, where it mixes with the fresh air conveyed directly into the outside air duct 14 by the fan 9.
  • the Fresh air then no longer has moisture saturation, so that condensation does not take place in the exhaust air duct 17.
  • the moisture that is carried along is also discharged to the outside in such a small amount per unit volume that no recognizable steam vapors emerge from the dishwasher.
  • the control valve 20 can be placed in the flow divider chamber 12 in front of the secondary air duct 13 via the controller 21 so that a relatively small amount of fresh air into the working container at the beginning of the drying cycle 3 flows. With increasing decrease in the moisture content of the exhaust air, the control flap 20 can then be opened further, so that the fresh air portion guided through the working container 3 increases and at the end of the drying cycle the entire fresh air flow conveyed by the fan 9 is guided through the working container 3.
  • the fresh air which has already been preheated in the machine base can also be additionally heated by a heating element 22 arranged in the secondary air duct 13.
  • closure flap 18 instead of the control flap 20 in such a way that the flow cross-section of the ventilation opening 15 that is released by it can be changed as a function of time or moisture. This also makes it possible to change the proportion of fresh air conveyed by the fan 9 into the working container 3 in accordance with the prevailing operating conditions.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP89122636A 1988-12-21 1989-12-08 Geschirrspülmaschine Expired - Lifetime EP0374616B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842997 1988-12-21
DE3842997A DE3842997C2 (de) 1988-12-21 1988-12-21 Geschirrspülmaschine

Publications (2)

Publication Number Publication Date
EP0374616A1 EP0374616A1 (de) 1990-06-27
EP0374616B1 true EP0374616B1 (de) 1994-01-26

Family

ID=6369706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122636A Expired - Lifetime EP0374616B1 (de) 1988-12-21 1989-12-08 Geschirrspülmaschine

Country Status (3)

Country Link
EP (1) EP0374616B1 (tr)
DE (2) DE3842997C2 (tr)
TR (1) TR25336A (tr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8875721B2 (en) 2011-12-15 2014-11-04 Whirlpool Corporation Dishwasher with closed loop condenser

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029958C2 (de) * 1990-05-25 2000-02-10 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einer Entlüftungsöffnung
DE59201390D1 (de) * 1991-07-02 1995-03-23 Miele & Cie Geschirrspülmaschine mit einer den Spülraum mit der Umgebungsluft verbindenden Entlüftungsöffnung oder dergl.
DE4443849A1 (de) * 1994-10-25 1996-05-02 Bauknecht Hausgeraete Verfahren und Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
DE9421812U1 (de) * 1994-10-25 1997-01-23 Bauknecht Hausgeräte GmbH, 70565 Stuttgart Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
DE19704430A1 (de) * 1997-02-06 1998-08-13 Whirlpool Co Geschirrspülmaschine
PL1721559T3 (pl) * 2005-05-10 2011-08-31 Electrolux Home Products Corp Nv Zmywarka
TW200916042A (en) 2007-10-11 2009-04-16 Panasonic Corp Dish washing/drying machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US20120318296A1 (en) 2011-06-20 2012-12-20 Whirlpool Corporation Ultra micron filter for a dishwasher
WO2013097975A1 (en) * 2011-12-29 2013-07-04 Arcelik Anonim Sirketi A washer comprising a dehumidifying unit
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9451862B2 (en) * 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US10595706B2 (en) 2014-07-23 2020-03-24 Whirlpool Corporation Dishwasher with air system
EP4059409B1 (en) * 2021-03-19 2023-11-08 Arçelik Anonim Sirketi A dishwasher providing heat recovery

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130737A (en) * 1962-10-09 1964-04-28 Gen Electric Automatic dishwashing appliance
US3397708A (en) * 1966-02-01 1968-08-20 Gen Motors Corp Forced air drying system for a dishwasher
US3876469A (en) * 1973-05-23 1975-04-08 Gen Electric Dish-washer vent system
US4188732A (en) * 1978-09-06 1980-02-19 The Maytag Company Dishwasher airflow drying system
DE3418304A1 (de) * 1984-05-17 1985-11-21 Miele & Cie GmbH & Co, 4830 Gütersloh Geschirrspuelmaschine
DE3609788A1 (de) * 1986-03-22 1987-09-24 Miele & Cie Geschirrspuelmaschine
US4709488A (en) * 1986-08-06 1987-12-01 Whirlpool Corporation Venturi air vent for dishwasher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8875721B2 (en) 2011-12-15 2014-11-04 Whirlpool Corporation Dishwasher with closed loop condenser
DE102012025591B4 (de) 2011-12-15 2024-05-08 Whirlpool Corporation (A Delaware Corporation) Verfahren zum Betreiben eines Geschirrspülers mit geschlossenem Kondenserkreis

Also Published As

Publication number Publication date
TR25336A (tr) 1993-01-06
DE3842997C2 (de) 1994-09-01
DE58906828D1 (de) 1994-03-10
DE3842997A1 (de) 1990-07-05
EP0374616A1 (de) 1990-06-27

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