EP2173229A1 - Dish washer provided with a drying system - Google Patents
Dish washer provided with a drying systemInfo
- Publication number
- EP2173229A1 EP2173229A1 EP08779428A EP08779428A EP2173229A1 EP 2173229 A1 EP2173229 A1 EP 2173229A1 EP 08779428 A EP08779428 A EP 08779428A EP 08779428 A EP08779428 A EP 08779428A EP 2173229 A1 EP2173229 A1 EP 2173229A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inlet
- duct
- air
- evacuation
- fan
- 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
Links
- 238000001035 drying Methods 0.000 title claims abstract description 27
- 238000005406 washing Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
-
- 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
- A47L15/4287—Temperature measuring or regulating 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
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
- A47L15/0034—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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/11—Air heaters
-
- 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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/12—Air blowers
Definitions
- the present invention relates to a dishwasher provided with a drying system according to the preamble to claim 1.
- the object of the present invention is to provide a dishwasher having a drying system which gives a more effective drying and hence a shorter program time.
- fig. 1 is a schematically shown perspective view of a dishwasher provided with a drying system according to the invention
- fig. 2 is a schematically shown side view of a dishwasher provided with the drying system according to the invention
- fig. 3 is a schematically shown front view of a dishwasher provided with the drying system according to the invention.
- fig. 4 is a perspective view of an inlet unit belonging to the drying system according to the invention.
- fig. 5 and 6 show different partial views of the inlet unit.
- a dishwasher provided with a drying system according to the invention.
- the dishwasher is constructed with a container 1 which can be opened to the front by lowering of a door 2, which normally, i.e. in the closed state, covers a container opening 3 intended for loading of the wash items 5.
- the door is usually pivotably connected to the container by means of hinges in the vicinity of the lower portion of the door.
- the container 1 encloses a washing chamber 4 in which the wash items 5 are placed in pull-out baskets 6, 7 for cleaning according to a chosen program for, essentially, washing, rinsing and drying.
- the baskets are two in number, a lower basket 6 and an upper basket 7, but can vary in number and function, for instance there can be just one or, alternatively, three or more on two or more levels, supplemented by one or more special baskets, such as cutlery baskets.
- the washing can be realized in a conventional manner by spraying with hot, detergent-containing water and rinsing with hot water.
- a sprinkling system is present, having rotary sprinkler arms, usually one at the top beneath the upper basket and one at the bottom beneath the lower basket, possibly supplemented by fixed sprinkler arms for selected zones.
- the container 1 forms the main part of a dishwasher housing standing on two pairs of legs 8, 9, a front pair and a rear pair.
- the container is box- shaped and has two mutually opposing parallel side walls 10, 11, a rear wall 12, a top part 13 and a bottom part 14. As a result of the legs, a space 15 is formed beneath the bottom part, in which various machine elements, such as strainer, pumps, hoses, etc., are housed.
- a detachable base plate 16 screens off the machine space to the front.
- the drying system according to the invention is made up of an air inlet unit 17, for the forced, controlled air injection of heated external air into the washing chamber 4, and an interacting air evacuation unit 18, for the evacuation of air from the washing chamber to the environment.
- the air inlet unit 17 extends from the machine space 15 on the underside 19 of the bottom part 14 toward a lower edge 20, rounds this and extends a little way up along the outside 21 of one of the side walls.
- the structure of the inlet unit can best be seen from fig. 4, 5 and 6 and, in the example, is a rigid, coherent unit made of, for example, hard plastic and forms with its enclosing walls essentially an inlet duct 22 having an outer inlet end 23, forming an inlet opening for air from the environment, and an inner inlet end 24, forming an opening for the injection of air into the washing chamber 4.
- the inlet unit incorporates an inlet fan 25, which is integrated with the inlet duct 22, i.e. the interior of the fan housing 26, in the example, is in direct open communication with the inlet duct. It might be said that the fan sits in the inlet duct or the outer end thereof.
- the fan housing 26 is fixedly mounted on the underside 19 of the bottom part 14.
- the fan in the example, being of the radial fan type, having a blade wheel 27 or an impeller, driven by an electric motor 28, and upwardly and downwardly directed inlet openings 29, 30 for the admission of air from the environment, i.e. the machine space 15 which is filled with air from the environment outside the dishwasher.
- the fan 25 is mounted at some distance from the underside 19 of the bottom part 14, so that even the topmost of the outer inlet openings can suck in air.
- the interior of the fan housing 26 forms a duct portion 31 of the inlet duct 22 which has a substantially flat or horizontal extent, i.e. with a substantially horizontal flow direction for the inlet flow.
- the inlet unit 17 also incorporates a heating element 32, which is fitted in the inlet duct 22 and, in the example, is constructed as a flow-through electrical resistance battery for controlled heating of the through-flowing inlet air.
- the control system can, on the one hand, be a thermostat control and, on the other hand, a chosen connection by manual activation, or coupled to a chosen program.
- the heating element 32 is electrically driven of the PTC element type (PTC - Positive Temperature Control) having a resistance which increases with increasing temperature and thus gives a built-in automatic power regulation in dependence on, inter alia, the chosen flow velocity, which can therefore be varied.
- PTC element type PTC - Positive Temperature Control
- an overheating protection in the form of a cutout at a certain maximum temperature is also included.
- the heating element 32 is situated such that it connects to the fan housing 26 and is situated close to the end of the flat duct portion 31 , which, after the heating element, passes into a curved duct portion 33 extending around the outside of the rounded edge portion 20 of the container.
- the curved duct portion passes into an upright or substantially vertical duct portion 34, which extends a little way upward on the outside of one of the side walls 10 and which therefore creates a substantially vertical flow direction of the inlet flow.
- the upright duct portion 34 of the inlet unit 17 passes at the top into a duct portion 35, which is curved by an angle of about 180 degrees and is situated on the outside 21 of the side wall 10, see fig. 1 , 2 and 4, and which turns downward in the flow direction of the inlet air, see flow arrow 49.
- the closing end of the curved duct portion 35 has an arc-shaped bottom edge 50, which extends along the lower edge 51 of a circular cutout 36 in the side wall 10 of the container.
- the inlet duct 22 is led through the side wall into the washing chamber 4 of the container 1 , a liquid seal against the escape of dishwasher liquid being arranged around the cutout.
- the inlet duct 22 has over the greater part of its extent a very flat construction of relatively large width, viewed horizontally along the plane of the side wall 10, and low duct height for accommodation within the modular dimension of the machine.
- the inlet duct 22 has incrementally increased height and extends into the container 1 with its inner inlet end 24.
- the cutout 36 has an area which markedly exceeds the cross-sectional area of the inlet duct 22, with a transverse dimension which substantially corresponds to the width of the inlet duct before the lead-through and, in the case of a circular cutout, a corresponding height.
- the inlet end 24 is configured as a nozzle 37 or mouthpiece, which directs the inlet flow of the air in a chosen direction in the container, see flow arrows 52, 53 in fig. 2.
- the nozzle 37 as can be seen from fig. 4, is configured in the example as an incrementally widened portion of the inlet duct with its opening 24 directed downward and in a slot shape, slightly conically widened in the downward direction.
- a condensation barrier for condensed air is formed, so that condensation can run downward and out through drainage holes 54, situated in the bottom 55 of the inlet unit 17, after the heating element 32, thereby affording protection against moisture from within the interior of the machine.
- the inlet unit 17 is complete with electric connectors 56, 57 for, on the one hand, an electrical voltage feed to the PTC element and, on the other hand, an electrical voltage feed to the inlet fan 25.
- the electric connector 56 for the PTC element 32 sits, in the example, directly on the element and extends through holes 58 in a widened portion 59 in the duct wall, which forms a holder for the heating element.
- the electrical connector 57 for the inlet fan 25 is fitted to the fan housing 26.
- the air evacuation unit 18 is shown schematically in fig. 1 , 2 and 3 and essentially consists of an evacuation duct 38 and an evacuation fan 39 in the duct for driving the air from the interior of the container 1 , i.e. the washing chamber, to the environment.
- the evacuation duct At its inner end, the evacuation duct has an inner opening 40, which is situated relatively high up in the washing chamber and at a relatively large distance from the inner end 24 of the inlet duct 22.
- the evacuation duct has an inlet opening, which is lowly situated.
- the evacuation unit 18 is advantageously arranged in a known manner in the door 2 of the dishwasher, with the inner opening 40 placed high up in the door on the inside of the inner wall 42 of the door.
- the evacuation duct 38 extends downward in the interspace 43 between the inner wall and the outer wall 44 of the door and emerges in the bottom of the door with an outlet opening 45 at its outer end 41, an opening in the lower edge 46 of the door ensuring the discharge of the air.
- the evacuation fan 39 is expediently situated in the top of the duct 38 and can also be designed to suck air from the interspace in the door in order to mix drier air in with the evacuation air from the dishwasher and thus reduce the moisture content in the outlet air.
- the evacuation fan too, is controlled, for example program- controlled or sensor-controlled.
- the inlet fan 25, as well as the evacuation fan 39 has relatively high capacity, for example 20-25 m/min, and that the heating element 32 has relatively high power, for example 400 W.
- the air inlet 24 is advantageously directed downward, i.e. not upward toward the inner evacuation opening, so the air flow makes detours within the washing chamber, more specifically is directed down toward or beneath the lower basket containing wash items, sweeps round this and flows onward and upward through the upper basket and sweeps round the wash items thereof.
- the water on the surface of the wash items is hereupon vaporized by a constant supply of warm air.
- the air current with the higher moisture content is then evacuated through the evacuation unit due to the local underpressure which is created in the evacuation duct of the evacuation fan 39 on the suction side thereof, i.e. in front of this latter.
- the drying phase in the washing program is normally a concluding part which is automatically started once the rinsing is completed.
- the drying phase can either be pure air exchange with air of ambient temperature, with the inlet fan and evacuation fan 25, 39 in operation for a predetermined time, or with the heating element switched on for all or part of the time for the injection of warm or hot air.
- the control can in both cases be realized in interaction with sensors, such as thermostats and/or moisture sensors.
- the fans can be controlled either with an on/off control or with a speed control.
- the system can advantageously be used to heat up plates, serving dishes, etc., which can be rapidly heated by the circulation of heated air.
- the control is in this case most easily realized with a special heating program.
- the inlet unit can be directed rearward and can emerge in the rear wall.
- a plurality of inlet units and outlet units can be present, for example an inlet unit which emerges in each of the side walls or in combination with a unit in the rear wall. It is here important to control the air currents so that they interact in the washing chamber.
- the inlet fan it is also conceivable for the inlet fan to be placed behind the dishwasher, but what is consistent is that the inlet fan is expediently positioned and that the inner opening of the inlet is expediently positioned for the air flow, irrespective of the placement of the fan.
- the drying system can be combined with conventional drying using radiant heat and convection heat from heating elements in the bottom of the washing chamber.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0701646A SE531447C2 (en) | 2007-07-09 | 2007-07-09 | Dishwasher equipped with a drying system |
PCT/SE2008/050851 WO2009008828A1 (en) | 2007-07-09 | 2008-07-08 | Dish washer provided with a drying system |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2173229A1 true EP2173229A1 (en) | 2010-04-14 |
EP2173229A4 EP2173229A4 (en) | 2010-08-04 |
EP2173229B1 EP2173229B1 (en) | 2014-05-07 |
Family
ID=40228845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08779428.5A Not-in-force EP2173229B1 (en) | 2007-07-09 | 2008-07-08 | Dish washer provided with a drying system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2173229B1 (en) |
DK (1) | DK2173229T3 (en) |
SE (1) | SE531447C2 (en) |
WO (1) | WO2009008828A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019242240A1 (en) * | 2018-06-21 | 2019-12-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Drying apparatus for dishwasher and dishwasher having same |
US20200100644A1 (en) * | 2018-09-28 | 2020-04-02 | Haier Us Appliance Solutions, Inc. | Dishwasher appliance with a drying system |
WO2020074176A1 (en) * | 2018-10-08 | 2020-04-16 | Arcelik Anonim Sirketi | A dishwasher comprising a heater |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20110089733A (en) * | 2010-02-01 | 2011-08-09 | 삼성전자주식회사 | Dish washer |
ITTO20101045A1 (en) | 2010-12-23 | 2012-06-24 | Indesit Co Spa | METHOD FOR DETECTION OF A RINSE AID IN A RINSING LIQUID OF A HOUSEHOLD WASHING MACHINE, IN PARTICULAR A DISHWASHER AND ITS WASHING MACHINE. |
EP3000377B1 (en) | 2011-09-20 | 2017-08-02 | Whirlpool EMEA S.p.A | Dishwashing machine with drying system |
ITTO20110838A1 (en) * | 2011-09-20 | 2013-03-21 | Indesit Co Spa | DISHWASHER MACHINE WITH DRYING SYSTEM |
DE102011088754A1 (en) * | 2011-12-15 | 2013-06-20 | Premark Feg L.L.C. | Commercial dishwasher with fresh air drying system and method for operating such a dishwasher |
KR20130070276A (en) * | 2011-12-19 | 2013-06-27 | 엘지전자 주식회사 | Cotrol method for dish washer |
EP2636357B1 (en) * | 2012-03-06 | 2020-06-17 | Miele & Cie. KG | Dishwasher, in particular household dishwasher |
WO2015107474A1 (en) * | 2014-01-17 | 2015-07-23 | Indesit Company S.P.A. | Household dishwashing machine |
CN105078396B (en) * | 2014-05-07 | 2017-12-29 | 美的集团股份有限公司 | Dish-washing machine |
US10595706B2 (en) | 2014-07-23 | 2020-03-24 | Whirlpool Corporation | Dishwasher with air system |
EP3020319B1 (en) | 2014-11-13 | 2023-02-22 | Whirlpool EMEA S.p.A. | Household dish-washing machine |
KR101792513B1 (en) | 2015-06-11 | 2017-11-02 | 엘지전자 주식회사 | Heating cycle drying module of dishwasher using Fan module and PTC Heater |
CN107348928B (en) * | 2017-06-23 | 2019-09-20 | 珠海格力电器股份有限公司 | Exhaust system reaches dish washer including it |
CN107997721A (en) * | 2017-12-29 | 2018-05-08 | 珠海格力电器股份有限公司 | Induced air system and dish washer |
CN107981821A (en) * | 2017-12-29 | 2018-05-04 | 珠海格力电器股份有限公司 | Induced air system and dish washer |
CN108618732B (en) * | 2018-06-21 | 2023-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Air outlet assembly and dish washer |
CN108670156B (en) * | 2018-06-21 | 2023-07-28 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine |
CN108852242A (en) * | 2018-06-21 | 2018-11-23 | 佛山市顺德区美的洗涤电器制造有限公司 | Drying device for dish-washing machine and the dish-washing machine with it |
CN108567394B (en) * | 2018-06-21 | 2024-06-14 | 佛山市顺德区美的洗涤电器制造有限公司 | Exhaust assembly for dish washing machine and dish washing machine |
CN108618733B (en) * | 2018-06-21 | 2023-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Air outlet assembly and dish washer |
CN109567701B (en) * | 2018-12-07 | 2021-04-02 | 东莞优乐家智能家电有限公司 | Method for quickly washing dishes by dish washing machine and dish washing machine |
KR20210138422A (en) * | 2020-05-12 | 2021-11-19 | 엘지전자 주식회사 | Dishwasher |
CN116940273A (en) * | 2021-04-16 | 2023-10-24 | 三星电子株式会社 | Tableware cleaning machine |
CN113017525B (en) * | 2021-04-22 | 2022-02-11 | 珠海格力电器股份有限公司 | Dish washing machine |
KR20230020232A (en) * | 2021-08-03 | 2023-02-10 | 엘지전자 주식회사 | Dish washer |
EP4205623A1 (en) * | 2021-12-31 | 2023-07-05 | LG Electronics Inc. | Dishwasher |
US12053135B2 (en) * | 2022-03-08 | 2024-08-06 | Haier Us Appliance Solutions, Inc. | Dishwashing appliance vent conduit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2491319A1 (en) * | 1980-10-08 | 1982-04-09 | Bosch Siemens Hausgeraete | Dishwashing machine with ventilation and drying system - uses external air drawn through filter and heated before drying dishes, and labyrinth condenser on air outlet |
EP1447042A1 (en) * | 2003-02-11 | 2004-08-18 | Whirlpool Corporation | Dishwasher with drying system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2674249A (en) * | 1951-05-21 | 1954-04-06 | Gen Electric | Air flow controller for dishwashing and drying machines |
JPH0819502A (en) * | 1994-07-06 | 1996-01-23 | Matsushita Electric Ind Co Ltd | Dish washing machine |
DE602005026916D1 (en) * | 2005-05-10 | 2011-04-28 | Electrolux Home Prod Corp | dishwasher |
-
2007
- 2007-07-09 SE SE0701646A patent/SE531447C2/en not_active IP Right Cessation
-
2008
- 2008-07-08 WO PCT/SE2008/050851 patent/WO2009008828A1/en active Application Filing
- 2008-07-08 EP EP08779428.5A patent/EP2173229B1/en not_active Not-in-force
- 2008-07-08 DK DK08779428.5T patent/DK2173229T3/en active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2491319A1 (en) * | 1980-10-08 | 1982-04-09 | Bosch Siemens Hausgeraete | Dishwashing machine with ventilation and drying system - uses external air drawn through filter and heated before drying dishes, and labyrinth condenser on air outlet |
EP1447042A1 (en) * | 2003-02-11 | 2004-08-18 | Whirlpool Corporation | Dishwasher with drying system |
Non-Patent Citations (1)
Title |
---|
See also references of WO2009008828A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019242240A1 (en) * | 2018-06-21 | 2019-12-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Drying apparatus for dishwasher and dishwasher having same |
US20200100644A1 (en) * | 2018-09-28 | 2020-04-02 | Haier Us Appliance Solutions, Inc. | Dishwasher appliance with a drying system |
WO2020074176A1 (en) * | 2018-10-08 | 2020-04-16 | Arcelik Anonim Sirketi | A dishwasher comprising a heater |
Also Published As
Publication number | Publication date |
---|---|
SE0701646L (en) | 2009-01-10 |
SE531447C2 (en) | 2009-04-07 |
DK2173229T3 (en) | 2014-08-11 |
WO2009008828A1 (en) | 2009-01-15 |
EP2173229A4 (en) | 2010-08-04 |
EP2173229B1 (en) | 2014-05-07 |
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