EP1447042A1 - Lave-vaisselle avec dispositif de séchage - Google Patents

Lave-vaisselle avec dispositif de séchage Download PDF

Info

Publication number
EP1447042A1
EP1447042A1 EP03002650A EP03002650A EP1447042A1 EP 1447042 A1 EP1447042 A1 EP 1447042A1 EP 03002650 A EP03002650 A EP 03002650A EP 03002650 A EP03002650 A EP 03002650A EP 1447042 A1 EP1447042 A1 EP 1447042A1
Authority
EP
European Patent Office
Prior art keywords
fan
stage
air
chamber
humid air
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
EP03002650A
Other languages
German (de)
English (en)
Other versions
EP1447042B1 (fr
Inventor
Bernhard Mohrbacher
Peter Hagenmüller
Andreas Marettek
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
Priority to EP20030002650 priority Critical patent/EP1447042B1/fr
Priority to DE2003613428 priority patent/DE60313428T2/de
Priority to ES03002650T priority patent/ES2284990T3/es
Publication of EP1447042A1 publication Critical patent/EP1447042A1/fr
Application granted granted Critical
Publication of EP1447042B1 publication Critical patent/EP1447042B1/fr
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
    • A47L15/483—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

Definitions

  • the present invention relates to a dishwasher with a device for drying dishes with air-cooled condenser. More particularly the present invention relates to a dishwasher having a wash chamber with openings by which humid air is drawn out by a fan and cooled before being returned to the chamber.
  • a dishwasher of this kind is disclosed by EP-A-1142528 in which the humid air drawn out from the wash chamber is cooled by means of a water container before being returned through a flap valve.
  • Such known system works with a water-cooled condenser in circulated-air operation and it achieves insufficient drying results for an initial temperature of under about 63 °C.
  • such known systems are less suitable for hot water connection, and they are more complex and expensive.
  • drying systems are distinguished by the fact that they either operate in exhaust-air operation only, using a condenser with a regular wall thickness typically of more than 1 mm, or that the humid air completely exits to the surroundings, with or without fresh air being added (with or with out mixing control with humid air).
  • a condenser with a regular wall thickness typically of more than 1 mm
  • the humid air completely exits to the surroundings, with or without fresh air being added (with or with out mixing control with humid air).
  • these systems are either not suitable for elevated installation in the fitted kitchen (column mounted) or for a full door or their drying performance is not optimal, i.e. they do not achieve an "A" rating for the drying performance in a drying interval of under 40 min or they need additional heating energy.
  • an object of the present invention is to ensure drying under any installation conditions, at low initial temperature (rinsing temperature at the end below about 59 °C), and high drying performance in a simple manner and securely, quickly, and at low cost.
  • the fan comprises two stages, a first stage for drawing out the humid air and for returning it to the wash chamber, and a second stage for drawing fresh air and for using it for cooling the humid air drawn out from the wash chamber.
  • an air-cooled plastic condenser is used.
  • air containing water vapour is removed from the washing area by a suction device through one or more openings in the top area of the wash chamber, it is passed through a condenser outside the washing area and returned to the washing chamber over an adapter piece, while at the same time the condenser, which is specifically designed for this purpose, is cooled by fresh air.
  • the two-stage fan works as follows. The humid air is blown through a humid-air channel and the cooling air (fresh air) is blown through a fresh-air channel.
  • the two channels are in heat-exchange relationship in the condenser (heat exchanger) in a counter-current process. In this process, a predetermined amount of humid air is preferably mixed with the cooling air without exceeding the relative humidity of the surrounding air.
  • a dishwasher 10 comprises a washing chamber 10a containing an upper and a lower basket B1 and B2.
  • the washing chamber 10a presents an upper opening 12 (two in the version shown in figures 2 and 3) connected to a plastic condenser 14 and, through a fan adapter 16, to the inlet of a first stage 18a of a two stages fan 18.
  • the air is sucked by the first stage 18a and then fed by such first stage again to the wash chamber 10a, through the adapter 16 and through an opening 20 placed on the sidewall of the wash chamber.
  • the second stage of the fan 18, indicated as 18b presents a suction opening 22 though which fresh air is blown in the adapter 16 and then on the outside surface of the plastic condenser 14.
  • the drying system basically consists of four parts: a top box 24, the condenser 14, the adapter piece 16 (fan adapter), and the two-stages fan 18.
  • the top box 24 has the task of collecting the humid air which was sucked out of the inside of the washing chamber 10a through one or more openings 12 and leading it to the condenser 14.
  • the top box 24 is attached to the wash chamber 10a with ring nuts 24a.
  • the material of the condenser is a plastic material that usually has insulating properties. However, since the wall thickness is preferably below 1 mm, the heat transmission coefficient is close to that of metals.
  • the plastic condenser 14 is preferably designed as an extrusion profile with an outer wall thickness of about 0.5 mm. The 0.5 mm thick walls are used as a heat transmission surface.
  • the condenser 14 After the water vapour is removed from the air (the condenser 14 is provided with means for discharging the condensed water in the wash chamber 10a, not shown in the drawings), the dried air is led to the fan adapter 16, and from there to the first stage 18a of the two-stage fan wheel 18, after which it is blown back into the wash chamber 10a (see arrows H in figure 5). Inside the wash chamber, the warm dishes saturate the air with humidity again before it runs through the cycle again.
  • the fan 18 (figure 4) comprises a two-stage centrifugal fan wheel 19, the first stage of which is completely inside the fan adapter 16, a separator panel 21, which separates the two stages 18a and 18b from each other, a fan casing 23 for covering the second stage 18b and an electric motor 25 for the drive.
  • the fan wheel 19 comprises a circular plate 19a that, together with the separator panel 21, separates the two stages 18a and 18b of the fan 18. On both sides of the circular plate 19a there are a plurality of shaped fins 19a and 19b respectively.
  • the fan adapter 16 comprises a plastic component 16a which defines an housing 28 for the first stage 18a of the fan wheel 19, having an opening 28a for sucking humid air.
  • the plastic component 16a is also provided with an external shaped side walls 30 and internal partitions 32 which, together with a lid 34, defines the channels either for the flow of humid air toward the first stage 18a of the fan 18 or from the second stage 18b towards the outside surface of the condenser 14. Even if in the example shown in the drawings the fresh air is blown from the fan adapter 16 on the condenser 14, without being guided on it, it is possible to provide a prolonged portion of the adapter 16 or an accessory thereof in order to have a guided fresh air channel along the outside surface of the condenser 14.
  • the humid air from inside the chamber 10a is continuously turned over by the first fan stage 18a, and the humidity is removed.
  • This air recycling creates a light air current inside the chamber, which dries off the last drops on the crockery. Such gentle drying process reduces the stain formation due to quickly drying drops.
  • the second fan stage 18b sucks in fresh air in the base area and the motor compartment, blows it across the condenser 14, and cools it down from the outside on both sides. Then the warmed up cooling air exits into the kitchen through the top area between the working surface and the control panel over the entire width of the dishwasher, creating a barely noticeable and pleasantly warm air current.
  • a defined gap which is created by the opening diameter D for the fan wheel (figure 4) and the outer diameter of the fan wheel 19 itself, ensures that a predetermined part of the pre-condensed humid air can be diverted from inside the chamber to the cooling air channel before it is led back to the inside of the chamber (as indicated by dotted arrows L in figure 6).
  • the amount of the diverted part of warm air is determined by the design of the separator panel 21 in the area of the gap and by the consequently created flow pattern.
  • the diverted air volume is replaced by fresh air, which flows through the regenerating dosage system and the door gaps.
  • the gap is designed as a labyrinth seal, preventing an air exchange.
  • the diversion of a portion of exhaust air can be achieved by a bypass 35 provided in the fan adapter 16.
  • the exhaust air fraction can be adjusted at design level between 0% and approx. 40%, offering high flexibility for different installations of the dishwasher. It is also possible, in the embodiment shown in figure 7, to have an adjustment of the bypass ratio before installing the dishwasher and depending on the working conditions of the appliances (this adjustment can be carried out by the technician installing the appliance or by the customer). In case of high initial temperature (approx. 63 °C) and sufficiency long drying period (approx. 40 min.) drying can even be performed effectively in exclusive circulating-air operation (without any exhaust air).
  • the solution according to the invention may be used for integrated dishwashers with full door without the need for the customer to make an opening in the continuous kitchen base or the door decor.
  • the cooling current exits into the surroundings between the working surface and the control panel across the entire width, creating a pleasantly warm and barely noticeable airflow. Consequently, installation at a higher level than the floor (fully built-in) in the fitted kitchen becomes possible.
  • the dishwasher may be connected either to cold or hot water; there is no condensation on floor or furniture; drying does not require additional energy; the emission of detergent and rinse aid to the surroundings (kitchen) is reduced to a minimum; the initial temperature for drying may be below 59 °C, with related energy saving.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP20030002650 2003-02-11 2003-02-11 Lave-vaisselle avec dispositif de séchage Expired - Lifetime EP1447042B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20030002650 EP1447042B1 (fr) 2003-02-11 2003-02-11 Lave-vaisselle avec dispositif de séchage
DE2003613428 DE60313428T2 (de) 2003-02-11 2003-02-11 Geschirrspülmaschine mit Trocknungsvorrichtung
ES03002650T ES2284990T3 (es) 2003-02-11 2003-02-11 Lavavajillas con sistema de secado.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030002650 EP1447042B1 (fr) 2003-02-11 2003-02-11 Lave-vaisselle avec dispositif de séchage

Publications (2)

Publication Number Publication Date
EP1447042A1 true EP1447042A1 (fr) 2004-08-18
EP1447042B1 EP1447042B1 (fr) 2007-04-25

Family

ID=32668945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030002650 Expired - Lifetime EP1447042B1 (fr) 2003-02-11 2003-02-11 Lave-vaisselle avec dispositif de séchage

Country Status (3)

Country Link
EP (1) EP1447042B1 (fr)
DE (1) DE60313428T2 (fr)
ES (1) ES2284990T3 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080706A1 (fr) * 2004-10-12 2006-08-03 Lg Electronics, Inc. Appareil de condensation d'un lave-vaisselle
WO2008098745A2 (fr) * 2007-02-13 2008-08-21 Meiko Maschinenbau Gmbh & Co. Kg Lave-vaisselle à chargement frontal à récupération de chaleur
EP1961361A1 (fr) 2007-02-20 2008-08-27 Electrolux Home Products Corporation N.V. Système de séchage pour lave-vaisselle
WO2008134141A1 (fr) * 2007-04-25 2008-11-06 Illinois Tool Works Inc. Conduit d'evacuation reducteur d'humidite pour lave-vaisselle
EP2173229A1 (fr) * 2007-07-09 2010-04-14 Asko Cylinda Ab Lave-vaisselle muni d'un système de séchage
WO2013042036A1 (fr) * 2011-09-20 2013-03-28 Indesit Company S.P.A. Lave-vaisselle comprenant un système de séchage
ITTO20110943A1 (it) * 2011-10-19 2013-04-20 Indesit Co Spa Macchina lavastoviglie
EP2777471A3 (fr) * 2013-02-26 2015-01-07 Miele & Cie. KG Lave-vaisselle, notamment lave-vaisselle ménager
CN106551666A (zh) * 2015-09-28 2017-04-05 青岛海尔洗碗机有限公司 一种洗碗机用冷凝装置及安装有该冷凝装置的洗碗机
US9943211B2 (en) 2016-04-06 2018-04-17 Whirlpool Corporation Dishwasher with condensing drying system
US10136793B2 (en) 2014-07-23 2018-11-27 Whirlpool Corporation Dishwasher
WO2019086254A1 (fr) 2017-10-31 2019-05-09 Arcelik Anonim Sirketi Lave-vaisselle
CN110072426A (zh) * 2016-12-06 2019-07-30 Jp产业股份公司 用于干燥餐具等的机器、以及用所述机器干燥餐具等的方法
EP3524127A1 (fr) * 2018-02-09 2019-08-14 LG Electronics Inc. Lave-vaisselle
ES2756875A1 (es) * 2018-10-25 2020-04-27 Bsh Electrodomesticos Espana Sa Evitación de la condensación del vapor de agua en la pared exterior de una máquina lavavajillas doméstica.

Families Citing this family (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
US9510728B2 (en) 2014-11-20 2016-12-06 Whilrpool Corporation Reduced vapor dry systems and methods for dishwashers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076306A (en) * 1988-11-16 1991-12-31 Sanyo Electric Co., Ltd. Dish washer with dryer
US5337500A (en) * 1992-02-05 1994-08-16 Kabushiki Kaisha Toshiba Utensil drying apparatus
DE19946456A1 (de) * 1999-09-28 2001-04-05 Bsh Bosch Siemens Hausgeraete Haushalt-Geschirrspülmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076306A (en) * 1988-11-16 1991-12-31 Sanyo Electric Co., Ltd. Dish washer with dryer
US5337500A (en) * 1992-02-05 1994-08-16 Kabushiki Kaisha Toshiba Utensil drying apparatus
DE19946456A1 (de) * 1999-09-28 2001-04-05 Bsh Bosch Siemens Hausgeraete Haushalt-Geschirrspülmaschine

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080706A1 (fr) * 2004-10-12 2006-08-03 Lg Electronics, Inc. Appareil de condensation d'un lave-vaisselle
WO2008098745A2 (fr) * 2007-02-13 2008-08-21 Meiko Maschinenbau Gmbh & Co. Kg Lave-vaisselle à chargement frontal à récupération de chaleur
WO2008098745A3 (fr) * 2007-02-13 2009-01-22 Meiko Maschinenbau Gmbh & Co Lave-vaisselle à chargement frontal à récupération de chaleur
EP1961361A1 (fr) 2007-02-20 2008-08-27 Electrolux Home Products Corporation N.V. Système de séchage pour lave-vaisselle
WO2008134141A1 (fr) * 2007-04-25 2008-11-06 Illinois Tool Works Inc. Conduit d'evacuation reducteur d'humidite pour lave-vaisselle
US7909939B2 (en) 2007-04-25 2011-03-22 Illinois Tool Works, Inc. Humidity reducing exhaust duct for dishwasher
EP2173229A1 (fr) * 2007-07-09 2010-04-14 Asko Cylinda Ab Lave-vaisselle muni d'un système de séchage
EP2173229A4 (fr) * 2007-07-09 2010-08-04 Asko Cylinda Ab Lave-vaisselle muni d'un système de séchage
WO2013042036A1 (fr) * 2011-09-20 2013-03-28 Indesit Company S.P.A. Lave-vaisselle comprenant un système de séchage
ITTO20110943A1 (it) * 2011-10-19 2013-04-20 Indesit Co Spa Macchina lavastoviglie
EP2583613A1 (fr) * 2011-10-19 2013-04-24 Indesit Company S.p.A. Lave-vaisselle
US9468355B2 (en) 2013-02-26 2016-10-18 Miele & Cie. Kg Automatic dishwasher
EP2777471A3 (fr) * 2013-02-26 2015-01-07 Miele & Cie. KG Lave-vaisselle, notamment lave-vaisselle ménager
US10595706B2 (en) 2014-07-23 2020-03-24 Whirlpool Corporation Dishwasher with air system
US10136793B2 (en) 2014-07-23 2018-11-27 Whirlpool Corporation Dishwasher
US11259684B2 (en) 2014-07-23 2022-03-01 Whirlpool Corporation Dishwasher
CN106551666B (zh) * 2015-09-28 2020-01-21 青岛海尔洗碗机有限公司 一种洗碗机用冷凝装置及安装有该冷凝装置的洗碗机
CN106551666A (zh) * 2015-09-28 2017-04-05 青岛海尔洗碗机有限公司 一种洗碗机用冷凝装置及安装有该冷凝装置的洗碗机
US9943211B2 (en) 2016-04-06 2018-04-17 Whirlpool Corporation Dishwasher with condensing drying system
US10512388B2 (en) 2016-04-06 2019-12-24 Whirlpool Corporation Dishwasher with condensing drying system
CN110072426A (zh) * 2016-12-06 2019-07-30 Jp产业股份公司 用于干燥餐具等的机器、以及用所述机器干燥餐具等的方法
WO2019086254A1 (fr) 2017-10-31 2019-05-09 Arcelik Anonim Sirketi Lave-vaisselle
EP3524127A1 (fr) * 2018-02-09 2019-08-14 LG Electronics Inc. Lave-vaisselle
US11278180B2 (en) 2018-02-09 2022-03-22 Lg Electronics Inc. Dishwasher
ES2756875A1 (es) * 2018-10-25 2020-04-27 Bsh Electrodomesticos Espana Sa Evitación de la condensación del vapor de agua en la pared exterior de una máquina lavavajillas doméstica.

Also Published As

Publication number Publication date
EP1447042B1 (fr) 2007-04-25
DE60313428T2 (de) 2008-01-10
ES2284990T3 (es) 2007-11-16
DE60313428D1 (de) 2007-06-06

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