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EP1961363A2 - Lave vaisselle industriel - Google Patents

Lave vaisselle industriel Download PDF

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Publication number
EP1961363A2
EP1961363A2 EP07121349A EP07121349A EP1961363A2 EP 1961363 A2 EP1961363 A2 EP 1961363A2 EP 07121349 A EP07121349 A EP 07121349A EP 07121349 A EP07121349 A EP 07121349A EP 1961363 A2 EP1961363 A2 EP 1961363A2
Authority
EP
European Patent Office
Prior art keywords
channel
treatment chamber
opening
drying
dishwasher
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
EP07121349A
Other languages
German (de)
English (en)
Other versions
EP1961363B1 (fr
EP1961363A3 (fr
Inventor
Heinrich Gonska
Dietrich Berner
Matthias Kaufmann
Peter Stolla
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.)
Premark FEG LLC
Original Assignee
Premark FEG LLC
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 Premark FEG LLC filed Critical Premark FEG LLC
Publication of EP1961363A2 publication Critical patent/EP1961363A2/fr
Publication of EP1961363A3 publication Critical patent/EP1961363A3/fr
Application granted granted Critical
Publication of EP1961363B1 publication Critical patent/EP1961363B1/fr
Ceased 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
    • A47L15/488—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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0013—Drying phases, including dripping-off phases
    • 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
    • A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • 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 commercial dishwasher, in the form of a program machine according to the preamble of claim 1.
  • a dishwasher of this kind is from the DE 10 2005 023 428 A1 known. Further dishwashers are known from the following documents: US 3,807,420 ; US 4,179,821 ; EP 0 978 250 A2 . EP 0 711 528 A1 . EP 0 378 836 A1 and DE 40 29 958 A1 ,
  • Front door machines and basket pass machines contain only a single treatment chamber for treating the items to be washed.
  • the front door machines can be under-counter goods washer or top-counter goods washer.
  • the cleaning of items to be washed is usually carried out by at least one cleaning process, during which the wash ware is sprayed with a wash liquid, and at least one subsequent rinse, during which the ware is sprayed with final rinse liquid.
  • the rinse liquid can be fresh water or a mixture of fresh water and rinse aid.
  • Commercial dishwashers designed for batch charging are also referred to as batch dish washers or batch-ware washers.
  • Wash ware may in particular be dishes, glasses, cutlery, dishes, pots, trays, boxes, etc.
  • Fresh air drying systems for commercial front door or under counter dishwashers operate with a high air flow rate in the range of 25 to 60 m 3 per hour to dry the dishes in a very short time.
  • the high air volume flows are due to the shortness of the drying process in the commercial sector.
  • the active drying time of a commercial dishwasher is many times shorter.
  • the program runtime drying in commercial use is between 1.5 and 5 min.
  • the condensation water present in the drying channel is blown out through an outlet opening.
  • the water droplets located or hanging in the drying channel are entrained by the high air velocities and conveyed out of the outlet opening of the dishwasher or blown out. Furthermore, due to the air flow, a water film forming at the bottom of the drying channel is partly discharged through the outlet opening. This leads to the fact that individual drops are thrown out of the dishwasher in the environment and on the other hand that dripping water drains from the channel outlet on the front side of the machine.
  • the total amount of water thus discharged which varies depending on the mode of operation or cycle sequence, can be up to about 10 ml during a single drying phase.
  • the object of the invention is to provide a possibility by which water discharge from a commercial dishwasher can be reduced.
  • the invention enables a reduction of the water outlet, in particular during the drying process (drying phase) during the program sequence of the dishwasher.
  • FIGS. 1 and 3 show a longitudinal section through a commercial dishwasher 2, which has a treatment chamber 4 for receiving items 6 and a door 8 for closing a loading and unloading 10.
  • the dishwasher 2 is designed for batchwise loading and unloading of the items to be washed 6 in a treatment area 12 in the treatment chamber 4.
  • An air inlet 14 into the treatment chamber 4 is below the door 8 arranged at a location lower than the treatment area 12.
  • an air outlet 16 is arranged from the treatment chamber 4 at a location higher than the treatment area 12.
  • the dishwasher 2 has a main fan 18 for generating an airflow 20 along an airway 21, the airway 21 extending from the air inlet 14 through the treatment chamber 4 to the air outlet 16.
  • the air flow 20 in the treatment chamber 4 is passed through the treatment area 12 for drying the wash item 6.
  • a deflector apparatus 22 having at least one deflector 23 is arranged and adapted to act on the airflow 20 entering the treatment chamber 4 through the air inlet 14 and cause evenly distributed entry of the air flow into the treatment area 12 from below.
  • the treatment chamber 4 has, for example, a volume between 60 l and 280 l.
  • the term "items to be washed" 6 comprises in particular dishes, glasses, cutlery, pots, containers, boxes, trays, etc.
  • the treatment area 12 is an area in the treatment chamber 4 in which the items to be washed 6 are positioned for cleaning.
  • the items to be washed 6 is preferably arranged in a basket 24.
  • the treatment chamber 4 may include one or more basket receptacles, for example, as shown, a single basket receptacle 26, on each of which a basket 24 is positionable or positioned. Alternatively, for example, two stacked basket receptacles may be arranged.
  • a multiplicity of spray nozzles 28 are arranged in the treatment chamber 4 for spraying liquid 38, for example washing liquid or final rinse liquid, onto the items to be washed 6. Separate spray nozzles 28 may be provided for spraying washing liquid and final rinse liquid, respectively.
  • the spray nozzles 28 may in particular be formed as shown on rotatable spray tubes, on fixed spray tubes or in a treatment chamber wall.
  • the loading and unloading opening 10 is arranged on the front side 50 of the treatment chamber 4.
  • a treatment chamber floor 32 has a passage opening 34 in a tank 36 or in a reservoir, which is provided for the reception of liquid 38.
  • the passage opening 34 in the treatment chamber floor 32 is preferably covered by a tank screen 40.
  • the dishwasher 2 is preferably provided for at least partially reusing the liquid 38 in the tank 36 for a further washing program, ie for a new batch of items to be washed 6.
  • the operating temperature of the liquid 38 in the tank 36 is preferably between 55 ° C to 65 ° C and is maintained at the operating temperature by a suitable temperature control device.
  • a tempering device for rinsing liquid may be provided (not shown), for example outside the treatment chamber 4, which preferably keeps the final rinse liquid at a temperature between 63 ° C. and 85 ° C.
  • the air inlet 14 is according to the in the FIGS. 1 and 3 illustrated embodiments between guide elements 42, 44 formed, which are connected to a machine housing 46 or formed by this.
  • an upper guide element 42 and a lower guide element 44 form at least one gap or slot.
  • the lower guide element 44 is preferably inclined downwards towards the treatment chamber 4.
  • the upper guide element 42 is preferably inclined away from the treatment chamber 4.
  • the air inlet 14 is preferably designed to generate an airflow 20 which covers the entire width of the treatment area 12.
  • An air inlet path 48 extends from a front side 50 of the dishwasher 2 through the lower door gap 52 to the air inlet 14.
  • the air inlet path 48 may extend from an opening in a housing part or from an opening in the door 8 to the air inlet 14.
  • the air inlet 48 is preferably formed labyrinth-shaped (see. FIGS. 1 and 3 ), to avoid that rinsing liquid 38 during a spraying operation of Spray nozzles 28 exits through the air inlet 48 from the dishwasher 2.
  • a particulate filter for example a dust filter.
  • the deflector device 22, which is arranged in the air path 21 of the air flow 20, may be formed in one piece.
  • the deflector device 22 may be designed in several parts, with at least two deflectors 23.
  • the at least two deflectors 23 may be arranged at a distance from each other.
  • the deflector device 22 is arranged at a distance from the air inlet 14.
  • the deflector device 22 may be arranged on the treatment chamber bottom 32.
  • the deflector device 22 or at least one deflector 23 thereof may be arranged on the tank screen 40.
  • the deflector device 22 may alternatively be arranged adjacent to the air inlet 14, for example on a treatment chamber wall.
  • the air outlet 16 is arranged in an upper rear region 56 of the treatment chamber 4. As a result, the air path 21 and thus also the air flow 20 through the entire treatment area 12 of the treatment chamber 4, whereby a good drying result is achieved. Alternatively, the air outlet 16 may be located elsewhere above the washware area 12.
  • a drying channel 58 extends from the air outlet 16 to a machine outlet in the form of a discharge opening 60, which is preferably arranged on the machine front 50, such as in the FIGS. 1 to 4 shown.
  • the drying channel 58 preferably extends above the treatment chamber 4 and below a dishwasher blanket.
  • An outlet cover 62, which in the area of Outlet opening 60 is arranged ensures the desired flow conditions at the exhaust opening 60th
  • the drying channel 58 has in its channel bottom 61 a transversely to the channel bottom 61 extending gutter 63.
  • the drainage channel 63 has a drain opening 64.
  • the channel bottom 61 rises from the air outlet 16 to the gutter 63 towards.
  • the drainage opening 64 of the drainage channel 63 is shielded on its underside by a shielding against splash water from the treatment chamber 4.
  • the shielding device consists in the described embodiments of a tubular drainage channel 65, which (see also in particular Fig. 4 ) an adjacent to the drain opening 64 downwardly directed drain section 65-1, an adjoining transverse to the drain section 65-1 extending, ie thus an approximately horizontally extending intermediate section 65-2 and an adjoining turn downwardly directed end portion 64-3 comprising an approximately downward opening.
  • the shielding device or the drainage channel 65 can (see. Fig. 1 ) to the front of the dishwasher 2 or to the back (see. Fig. 3 ) be aligned. A lateral orientation is also conceivable.
  • the gutter 63 is located closer to the exhaust port 60 than to the air outlet 16.
  • the drainage channel 63 is arranged in the half of the drying channel 58 facing the blow-off opening 60, preferably in the range from approximately 60% to 95% of the drying channel length. Further preferred is a range of 75% to 85% of the length thereof.
  • a leakage barrier 66 In the lower part of the exhaust opening 60 (see Fig. 4 ) is formed by a projection which extends from the channel bottom 61 of the exhaust opening 60 upwards, a leakage barrier 66. This prevents rinsing liquid or condensate, which reaches the outlet barrier 66, from leaking onto a floor or onto the door 8. Upstream of the outlet barrier 66 is in the region thereof or in front of the same a second drain opening 67 in the bottom of the drying channel 58th educated. Liquid which is prevented from leaving the dishwasher 2 by the outlet barrier 66 can drain through the second drainage opening 67.
  • the discharge port 68 terminates behind the upper end of the door 8 of the dishwasher 2 via a door seal 68-2, which serves as a sealing element between the door 8 and the housing of the dishwasher 2.
  • the channel bottom 61 drops at least in a partial region to the discharge opening 60.
  • a bottom portion 61-2 of the channel bottom 61 downstream of the gutter 63 falls directly thereafter from the same downstream.
  • Another sloping channel bottom portion 61-3 is disposed upstream of the spill stop 66 and terminates at the spill stop 66th
  • the drying channel 58 has a channel body 69. This forms a first drying channel section 70, which extends from the air outlet 16 to near the front edge of the dishwasher 2.
  • the first drying channel section 70 is adjoined by a second drying channel section 71, which opens into the outlet opening 60.
  • the channel body 69 and the main fan 18 are connected to a fastening element, for. B. in the form of a bayonet nut 72, fixed to the ceiling 4-2 of the treatment chamber 4.
  • a condensate outlet 73 from the drying channel 58 into the treatment chamber 4 is provided at a lowest point of the drying channel 58.
  • the condensate outlet 73 may open into the air outlet 16 of the treatment chamber 4 or through recesses 74 in the channel body 69 and to these corresponding recesses 75 in the fastener, which in the illustrated preferred embodiment, as already mentioned, the bayonet nut 72 opens into the treatment chamber 4.
  • the main fan 18 is disposed in a region between the air outlet 16 and the exhaust port 60 for sucking air from the treatment chamber 4.
  • the main fan 18 is disposed at the air outlet 16.
  • the main fan may be arranged to blow air into the treatment chamber 4.
  • a volute of the main fan 18 is inclined toward the condensate outlet 73, so that liquid in the main fan 18 drains toward the condensate outlet 73.
  • the spiral housing of the main ventilator 18 may also be arranged horizontally.
  • a closure element 76 is preferably arranged, as in the FIGS. 1 and 3 shown, for closing the drying channel 58 with the main fan 18.
  • the closure member 76 may be a controllable closure member which is controlled by a controller (not shown).
  • the closure element 76 is formed as shown by a flap which is automatically opened by the air flow 20 generated by the main fan 18 and automatically closed when the main fan 18 is turned off.
  • the flap is stored for this purpose at its upper end, so that the flap is automatically closed when the main fan 18 is turned off by gravity.
  • an additional fan 77 for supplying ambient air 78 to the air stream 20 in the flow direction of the air stream 20 after the main fan 18 and after the air outlet 16.
  • the auxiliary fan 77 is arranged to convey ambient air through an ambient air channel 80 into the drying channel 58.
  • a fan inlet 79 of the Additional fan 77 is disposed in the illustrated embodiment on the top of the additional fan 77, but may be arranged at any other location, according to the type of blower used.
  • An orifice portion 82 in which the ambient air channel 80 opens into the drying channel 58, acts as a mixing chamber for mixing the transported through the ambient air duct 80 ambient air 78 and the air flow 20 from the treatment chamber 4.
  • the ambient air is atmospheric outside air, which in a Area between a treatment chamber ceiling and the dishwasher ceiling is sucked.
  • flow guide 84 may be provided to improve mixing of the two air streams.
  • flow guide 86 may be provided to reduce turbulence in the resulting air stream 88.
  • air flow 20 By conveying ambient air in the effluent from the treatment chamber 4 air flow 20 is a condensation effect outside the dishwasher 2, which by the moist air flowing out caused by the spray chamber 4, reduced.
  • a closure element 90 may be arranged to close the ambient air duct 80 when the auxiliary fan 77 is switched off.
  • the closure element 90 of the ambient air duct 80 may in particular be formed by a closure element, as described above with respect to the drying duct 58.
  • the course of the condensate outlet 73 becomes clear. This consists of a channel which extends (radially) to the main fan 18 and then opens into a recess in the bayonet nut 72.
  • the main ventilator 18 in the illustrated embodiment is configured to generate an airflow 20 at a rate that is 6 to 12 times the treatment chamber volume per minute. While the air is sucked from the treatment chamber in the axial direction, it is blown out in the radial direction.
  • a splash guard 102 is arranged in front of the air outlet 16 in order to prevent or reduce the passage of liquid out of the treatment chamber 4 through the air outlet 16.
  • the splash guard 102 may be equipped with a grease filter.
  • the splash guard 102 is arranged in the illustrated embodiment with respect to the condensate drain 73 so that condensate draining through the condensate drain 73 drips onto the splash guard 102 and is directed by this to an edge region 104 of the treatment chamber 4 and thus past the Spülgut Scheme 12.
  • the splash guard is optional and according to the embodiment Fig. 3 not shown.
  • a program control device 200 is provided, which in Fig. 2 is indicated schematically.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP07121349A 2007-02-22 2007-11-22 Lave vaisselle industriel Ceased EP1961363B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007008827A DE102007008827A1 (de) 2007-02-22 2007-02-22 Gewerbliche Geschirrspülmaschine

Publications (3)

Publication Number Publication Date
EP1961363A2 true EP1961363A2 (fr) 2008-08-27
EP1961363A3 EP1961363A3 (fr) 2009-10-07
EP1961363B1 EP1961363B1 (fr) 2011-10-05

Family

ID=39308022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07121349A Ceased EP1961363B1 (fr) 2007-02-22 2007-11-22 Lave vaisselle industriel

Country Status (7)

Country Link
US (1) US20080202566A1 (fr)
EP (1) EP1961363B1 (fr)
JP (1) JP2008200496A (fr)
CN (1) CN101248975B (fr)
BR (1) BRPI0800011A (fr)
CA (1) CA2616973C (fr)
DE (1) DE102007008827A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013090155A1 (fr) * 2011-12-15 2013-06-20 Premark Feg L.L.C. Lave-vaisselle commercial avec un système de séchage à l'air frais, et méthode d'utilisation d'un lave-vaisselle de ce type
WO2013106624A1 (fr) * 2012-01-13 2013-07-18 Illinois Tool Works Inc. Appareil de lavage doté d'un système de traitement de l'air amélioré

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101704612B1 (ko) * 2009-11-30 2017-02-08 삼성전자주식회사 식기세척기 및 그 제어방법
KR102191960B1 (ko) * 2016-03-28 2020-12-17 삼성전자주식회사 식기 세척기
JP6911612B2 (ja) * 2017-07-25 2021-07-28 三菱電機株式会社 食器洗浄装置
CN108618732B (zh) * 2018-06-21 2023-06-30 佛山市顺德区美的洗涤电器制造有限公司 出风组件和洗碗机
CN108618733B (zh) * 2018-06-21 2023-06-30 佛山市顺德区美的洗涤电器制造有限公司 出风组件和洗碗机
US20200100644A1 (en) * 2018-09-28 2020-04-02 Haier Us Appliance Solutions, Inc. Dishwasher appliance with a drying system
CN109199298B (zh) * 2018-10-22 2024-01-23 东莞理工学院 一种除湿干燥装置及洗碗机
CN109602363A (zh) * 2018-12-24 2019-04-12 熊文君 一种基于批量清洗的餐盘清洗装置
US12077033B2 (en) * 2021-05-11 2024-09-03 Denso International America, Inc. Air circulation system for a vehicle
WO2023128964A1 (fr) * 2021-12-28 2023-07-06 Arcelik Anonim Sirketi Lave-vaisselle à efficacité de séchage améliorée
KR20250090084A (ko) * 2023-12-12 2025-06-19 엘지전자 주식회사 컵세척기

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807420A (en) 1972-05-15 1974-04-30 Westinghouse Electric Corp Dishwasher drying system
DE2503088C2 (de) * 1975-01-25 1982-06-24 Euro Hausgeräte GmbH, 6680 Neunkirchen Belüfter für Geschirrspülmaschinen
US4179821A (en) 1977-11-21 1979-12-25 General Electric Company Dishwasher vent arrangement
US4247158A (en) * 1979-07-02 1981-01-27 The Maytag Company Dishwasher airflow drying system
DE3901170A1 (de) 1989-01-17 1990-07-19 Licentia Gmbh Geschirrspuelmaschine mit entlueftungsoeffnung
DE4029958C2 (de) 1990-05-25 2000-02-10 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einer Entlüftungsöffnung
DE4133417A1 (de) * 1991-10-09 1993-04-15 Bauknecht Hausgeraete Geschirrspuelmaschine
DE9421812U1 (de) 1994-10-25 1997-01-23 Bauknecht Hausgeräte GmbH, 70565 Stuttgart Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
IT1303213B1 (it) 1998-08-06 2000-11-02 Bitron Spa Dispositivo per l'asciugatura delle stoviglie al termine del processodi lavaggio di una lavastoviglie
DE102005023428A1 (de) 2005-05-20 2006-11-23 Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware), Wilmington Gewerbliche Geschirrspülmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013090155A1 (fr) * 2011-12-15 2013-06-20 Premark Feg L.L.C. Lave-vaisselle commercial avec un système de séchage à l'air frais, et méthode d'utilisation d'un lave-vaisselle de ce type
WO2013106624A1 (fr) * 2012-01-13 2013-07-18 Illinois Tool Works Inc. Appareil de lavage doté d'un système de traitement de l'air amélioré
US10024561B2 (en) 2012-01-13 2018-07-17 Illinois Tool Works Inc. Washing appliance with improved air handling system

Also Published As

Publication number Publication date
JP2008200496A (ja) 2008-09-04
CN101248975A (zh) 2008-08-27
EP1961363B1 (fr) 2011-10-05
US20080202566A1 (en) 2008-08-28
CA2616973C (fr) 2011-04-26
BRPI0800011A (pt) 2008-10-07
EP1961363A3 (fr) 2009-10-07
CA2616973A1 (fr) 2008-08-22
DE102007008827A1 (de) 2008-08-28
CN101248975B (zh) 2011-02-16

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