EP2618712A2 - Geschirrspülmaschine, insbesondere haushaltsgeschirrspülmaschine - Google Patents
Geschirrspülmaschine, insbesondere haushaltsgeschirrspülmaschineInfo
- Publication number
- EP2618712A2 EP2618712A2 EP11757289.1A EP11757289A EP2618712A2 EP 2618712 A2 EP2618712 A2 EP 2618712A2 EP 11757289 A EP11757289 A EP 11757289A EP 2618712 A2 EP2618712 A2 EP 2618712A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- sterilization
- washing compartment
- dishwasher according
- 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
Links
- 230000001954 sterilising effect Effects 0.000 claims abstract description 61
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 59
- 238000001035 drying Methods 0.000 claims abstract description 36
- 238000004851 dishwashing Methods 0.000 claims abstract description 8
- 238000012376 hot air sterilization Methods 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 230000008929 regeneration Effects 0.000 claims description 14
- 238000011069 regeneration method Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 239000002274 desiccant Substances 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000003570 air Substances 0.000 description 56
- 238000001179 sorption measurement Methods 0.000 description 18
- 239000007788 liquid Substances 0.000 description 9
- 238000003795 desorption Methods 0.000 description 6
- 229910021536 Zeolite Inorganic materials 0.000 description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000010457 zeolite Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002123 temporal effect Effects 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
- A47L15/481—Drying arrangements by using water absorbent materials, e.g. Zeolith
-
- 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
- A47L15/0036—Steam or sterilizing 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
- A47L15/42—Details
- A47L15/4236—Arrangements to sterilize or disinfect dishes or washing liquids
-
- 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
- A47L2301/00—Manual input in controlling methods of washing or rinsing machines for crockery or tableware, i.e. information entered by a user
- A47L2301/04—Operation mode, e.g. delicate washing, economy washing, reduced time, sterilizing, water softener regenerating, odor eliminating or service
-
- 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
- A47L2501/34—Change machine operation from normal operational mode into special mode, e.g. service mode, resin regeneration mode, sterilizing mode, steam mode, odour eliminating mode or special cleaning mode to clean the hydraulic circuit
Definitions
- the invention relates to a dishwasher, in particular household dishwasher dishwasher, according to the preamble of claim 1 and a method for operating such a dishwasher according to claim 14.
- the sterilization or sterilization of rinsing liquid or items to be washed by chemical methods, such as a chlorine or ozone treatment done.
- the sterilization / sterilization can be carried out without additional substances by UV irradiation of the items to be washed or the rinsing liquid within the rinsing space.
- WO 2007/021137 / A1 discloses a dishwasher in which UV radiation elements are provided, inter alia, in the rinsing container or in the sump, in order to irradiate the rinsed rinsing liquid and / or the items to be washed.
- the arrangement of the UV radiation elements requires extensive structural adjustments of the washing and the sump. In the event of a technical defect of a UV radiation element, dismantling from the washing container or pump sump is also complicated in terms of assembly technology. In addition, the UV rays are effective only in very small water penetration depth and only with a sufficiently long irradiation time, whereby the efficiency in the sterilization is impaired overall.
- the object of the invention is to provide a dishwashing machine in which effective sterilization or sterilization of the dishes can be achieved by simple means.
- the dishwasher has a sterilization unit with which hot and dry air is introduced into the washing compartment for sterilizing the items to be washed arranged in the washing compartment.
- the sterilization / sterilization is not carried out by UV irradiation, but rather by a hot air sterilization in which acts by air supply from the outside the items to be washed with hot and dry air for a sufficiently long treatment time on the dishes.
- the cell death of bacteria / viruses by the dry air is based on the denaturation of proteins. This is mainly an oxidative process.
- the sterilization process is temporally superimposed on a rinse cycle or at least a partial rinse cycle of a selected dishwasher program.
- the sterilization process thus takes place parallel to the rinse cycle, so that the total operating time for cleaning the items to be cleaned does not increase overall.
- the hot air sterilization is preferably carried out during a partial program step of the rinse cycle, in particular during a partial program step without liquid feed.
- the rinse final drying step for this purpose, in particular, the, the rinse final drying step.
- the introduced for sterilization in the wash hot air in particular a humidity of less than 20% and a temperature in the range between 60 ° C and 80 ° C, in particular between 70 ° C and 80 ° C, has.
- the sterilization process may preferably take place during the entire duration of the drying step.
- the sterilization unit can preferably have a hot-air blower which is arranged outside the dishwasher's washing compartment and fluidly connected to the dishwasher's washing compartment via an air inlet.
- a hot-air blower With the hot air blower enough dry air, possibly ambient air, are sucked in and heated by means of a heating element.
- the thus generated dry and hot air can then especially at Implementation of the drying step of the respective wash cycle are introduced into the wash compartment.
- the introduction of the dry hot air results in an air mixture in the washing compartment, which in comparison to a resulting during a conventional condensation drying air substantially reduced humidity and a greatly increased air temperature, whereby the sterilization process is supported.
- an air outlet line opens into the washing compartment.
- the dry and hot air can be introduced, while at the same time the humid air can be guided out of the washing room.
- the humidity of the adjusting air in the dishwasher air mixture is further reduced and correspondingly improves the sterilization effect.
- the dry and hot air can be introduced through a supply line into the washing compartment, while at the same time the still moist washing chamber air is discharged from the washing compartment through an outlet line.
- the sterilization unit forms a closed air circuit together with the supply line, the washing compartment and the outlet line.
- humid air is first led out of the flushing chamber via the outlet line into the sterilization unit.
- the sterilization unit can have a drying device which extracts moisture from the rinsing room air.
- the drying device can be a sorption column with a reversibly dehydratable material which extracts water for carrying out the sterilization of the moist dishwashing air and stores it in an absorption process in the sorption material of the sorption column.
- the water stored in the desiccant can be released again in a desaturation occurring in an advantageous manner as a separate sterilization process at a desorption in which the stored amount of water is released as water vapor under heating of the desiccant and recycled via the supply line into the washing compartment.
- the dry and hot air must be generated with additional expenditure of energy.
- the dishwasher evaluates based on predetermined criteria, whether the rinse carried out in an energy-saving first mode without sterilization or in an energy-consuming second mode with the sterilization of the dishes shall be.
- the control device is associated with a user-operable switch, upon actuation of which the control device switches over between the first and the second operating mode. As a result, the sterilization takes place only on express user-side request.
- the drying device of the sterilization unit can expediently be a sorption column with reversibly dehydratable material.
- the material may expediently be designed so that a sufficiently large heat of absorption is generated during the absorption, which can at least partially serve to heat the now dried air which has been led into the flushing space.
- the already mentioned heating element can be switched on to heat the dried air sufficiently.
- the heating element in terms of process technology, it is particularly preferred here for the heating element to be able to be used both during the sterilization process and in a double function during the regeneration process already mentioned.
- the heating element can be connected in a connecting line between the washing compartment and the drying device.
- the air flowing into the drying device can be heated by the heating element. The hot air thus produced subsequently heats the reversibly hydrogenatable desiccant, whereby the desorption is started.
- the control device in particular the control and / or regulating device, can be the heating element, possibly advantageously in a controller and / or in a closed-loop control system adjust or influence so that the given hot air temperature results. It is preferred in this case if the heating element during sterilization with a, compared to the regeneration process reduced power and / or is controlled clocked.
- FIG. 1 shows, in a block diagram, a dishwasher for carrying out the hot-air sterilization according to the invention.
- FIG. 2 shows a temperature-time diagram for illustrating a rinse cycle which takes place in an energy-saving first operating mode without sterilization, and a rinse cycle which takes place in an energy-intensive second operating mode with the sterilization of the ware according to the invention.
- a dishwasher with a washing compartment 1 is roughly schematically shown, in which not shown, to be cleaned dishes in dish racks 3, 5 can be arranged.
- two spraying arms 7, 9 provided in different spraying levels, in particular rotatably mounted, are arranged by way of example, via which the washware to be cleaned is supplied with washing liquid.
- a pump pot 1 1 is provided with a circulating pump 13, which is connected via feed lines 14, 15 fluidly connected to the spray arms 7, 9.
- the sump 1 1 is also connected via connecting pieces with a coupled to the water supply network fresh water supply line 16 and a drain line 17 in conjunction, in which a drain pump 18 is arranged to pump the liquid from the washing compartment 1.
- the rinsing container 1 has in its upper region an outlet opening 19, which is connected via a connecting line 21 with a sorption column 22 of a sterilization unit 20, whose operation is described later.
- a connecting line 21 to the sorption column 22 an air blower 23 and a heating element 24 is connected.
- the sorption column 22 contains as a drying agent a reversibly dehydratable material, such as. For example, zeolite, with which the wet dishwashing air is dried in a later described drying step T of the rinse.
- a high-humidity laden air stream is directed by means of the air blower 23 from the washing compartment through the sorption column 22.
- the zeolite provided in the sorption column 22 absorbs the moisture of the air and returns the thus dried air back into the washing compartment.
- the amount of water m stored in the zeolite during the drying step T can be released again in a regeneration process, that is to say in the case of desorption, by heating the desiccant of the sorption column 22.
- a stream of air heated by the heating element 24 to very high temperatures is passed through the sorption column 22. With the hot air flow, the water stored in the zeolite is released as hot water vapor and returned via the air inlet 27 back into the washing compartment 1.
- the sterilization unit 20 performs the hot air sterilization at the same time as the drying step T of the rinse cycle.
- moist rinsing room air is first conducted by means of the blower 23 via the connecting line 21 into the sorption column 22.
- the zeolite contained therein removes moisture from the wash compartment air, thereby releasing heat of absorption.
- the air stream emerging from the sorption column 22 is heated, whereby not only comparatively dry air, but also hot air is returned to the rinsing container 1 again.
- the sorption column 22 is designed in such a way that the dried and hot air returned to the washing compartment has a relative humidity of less than 20% and a temperature between 60 ° C. and 80 ° C.
- the heat of absorption released during drying I may not be sufficient to achieve the required sterilization temperature in the range between 60 ° C and 80 ° C.
- the heating element 24 may additionally be activated to obtain the required sterilization temperature.
- a control device 25, in particular control and / or monitoring device, which preferably serves to adjust the Generalprog ram steps of a selected dishwashing program, the heater 24 in the sterilization process with compared to the regeneration process reduced power and / or timed control, as compared to the desorption substantially less heat generation by the heating element 24 is required.
- FIG. 2 illustrates a temporal program sequence with the individual partial program steps of a rinse cycle, namely pre-rinsing V, cleaning R, intermediate rinsing Z, rinsing K and drying T 1.
- the rinse cycle shown in solid line in FIG. 2 is performed in an energy-saving first mode I without sterilization.
- FIG. 2 shows the rinse cycle carried out in a second energy-intensive operating mode II, which is identical to the first operating mode I, with the exception of the drying step T shown in dashed line.
- the regeneration process takes place in the sorption column 22 in the time interval Et R.
- the regeneration process Et R starts according to FIG. 2 at the beginning of the cleaning step R at the time t 0 .
- the amount of water stored in the drying agent m is returned as water vapor in the washing compartment 1. This amount of water was withdrawn in the drying step T of the previous rinse during an absorption process Et A A to be dried, laden with moisture Spülraum-air.
- the heating of the rinsing liquid takes place with the aid of a water heater 28 shown in FIG. 1 and with the aid of the steam released during the regeneration process.
- the temperature of the rinsing liquid is heated to an order of about 60 ° C.
- the control device 25 is in signal communication with a changeover switch 26 which is manually operable by the user. Upon actuation of the switch 26, the user can switch from the first, energy-saving mode I described above with reference to FIG. 2 to a second operating mode II described below in which the hot-air sterilization takes place in the drying step T.
- the moisture-laden cooling space-air conveyed from the washing compartment into the sorption column 22 is additionally heated by the heating element 24.
- the heating power introduced in this case is dimensioned so that it is far below an activation temperature for activating a desorption in the sorption column 22.
- the pre-heated by means of the heating element 24, laden with moisture rinsing room air is dehydrated in the sorption column 22, namely with further heating of the air flow due to the heat of absorption arising.
- a dried air flow is returned via the air inlet 27 into the washing compartment, the temperature of which is substantially increased in comparison to the drying step T of the first operating mode I.
- the drying step T Spülraumtemperatur is increased so that an effective hot air sterilization of the dishes can be adjusted.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL11757289T PL2618712T3 (pl) | 2010-09-22 | 2011-09-13 | Zmywarka do naczyń, w szczególności zmywarka do naczyń gospodarstwa domowego |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010041215A DE102010041215A1 (de) | 2010-09-22 | 2010-09-22 | Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine |
| PCT/EP2011/065829 WO2012038301A2 (de) | 2010-09-22 | 2011-09-13 | Geschirrspülmaschine, insbesondere haushaltsgeschirrspülmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2618712A2 true EP2618712A2 (de) | 2013-07-31 |
| EP2618712B1 EP2618712B1 (de) | 2019-09-11 |
Family
ID=44651773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11757289.1A Active EP2618712B1 (de) | 2010-09-22 | 2011-09-13 | Geschirrspülmaschine, insbesondere haushaltsgeschirrspülmaschine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2618712B1 (de) |
| DE (1) | DE102010041215A1 (de) |
| PL (1) | PL2618712T3 (de) |
| WO (1) | WO2012038301A2 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104433990B (zh) * | 2014-12-09 | 2017-04-19 | 苏州弗乐卡电器科技发展有限公司 | 一种多功能洗碗柜 |
| CN115104984A (zh) * | 2021-03-22 | 2022-09-27 | 青岛海尔洗碗机有限公司 | 用洗碗机清洗油烟机网状部件的方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3632820A1 (de) * | 1986-09-26 | 1988-04-07 | Hans Baltes | Verfahren zum trocknen und sterilisieren von gut im geschlossenen kreislaufsystem |
| JP3862549B2 (ja) * | 2001-11-08 | 2006-12-27 | シャープ株式会社 | 乾燥洗濯機 |
| JP2007533940A (ja) * | 2003-07-30 | 2007-11-22 | ベーエスハー ボッシュ ウント ジーメンス ハウスゲレーテ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 少なくとも1つの部分プログラム段階「乾燥」を有する装置を運転する方法 |
| WO2007021137A1 (en) | 2005-08-19 | 2007-02-22 | Lg Electronics Inc. | Dish washer with uv sterilization device therein |
-
2010
- 2010-09-22 DE DE102010041215A patent/DE102010041215A1/de not_active Withdrawn
-
2011
- 2011-09-13 WO PCT/EP2011/065829 patent/WO2012038301A2/de not_active Ceased
- 2011-09-13 PL PL11757289T patent/PL2618712T3/pl unknown
- 2011-09-13 EP EP11757289.1A patent/EP2618712B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012038301A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010041215A1 (de) | 2012-03-22 |
| EP2618712B1 (de) | 2019-09-11 |
| WO2012038301A3 (de) | 2012-07-19 |
| WO2012038301A2 (de) | 2012-03-29 |
| PL2618712T3 (pl) | 2020-03-31 |
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