EP2146616A1 - Temperaturerfassung bei zeolithtrocknung - Google Patents
Temperaturerfassung bei zeolithtrocknungInfo
- Publication number
- EP2146616A1 EP2146616A1 EP08735783A EP08735783A EP2146616A1 EP 2146616 A1 EP2146616 A1 EP 2146616A1 EP 08735783 A EP08735783 A EP 08735783A EP 08735783 A EP08735783 A EP 08735783A EP 2146616 A1 EP2146616 A1 EP 2146616A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drying
- temperature
- air
- temperature sensor
- 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
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
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/18—Air temperature
-
- 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
- A47L2501/26—Indication or alarm to the controlling device or to the user
-
- 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
- A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions
Definitions
- the invention relates to a dishwasher with a rinsing container and a drying device, which comprises a sorption column with a reversibly dehydratable desiccant, with an air circuit through the rinsing container and the drying device and with a temperature detection of the circulating air.
- the invention also relates to a drying method for dishwashers with a drying device and an air circuit between it and the washing container, in which a temperature profile of the circulating air is detected and drying is terminated when a predefined value is reached.
- Dishwashers with a drying device can have a reversibly dehydratable drying agent as a water-absorbing material. They adopt a characteristic of the zeolite which emits heat when absorbed by water as a result of the uptake reaction. The more water the zeolite absorbs, the higher its temperature increases. This circumstance can be used to detect the moisture content in the air circulation of the dishwasher and thus the degree of dryness of the dishes.
- a control of the drying process which is based on the detection of the temperature and thus indirectly on the humidity is much more accurate than a time control, since it is based on the actual drying conditions in the dishwasher. These can vary greatly, for example, due to a different or dense loading of the dishwasher.
- a sequence control of this type is described, for example, in DE 10 2005 004 097 A1. Furthermore, it is known from DE 10 2005 004 097 A1 to detect the temperature as close as possible to the heat source, ie downstream of the sorption column or in the water-absorbing material itself. However, the high temperatures prevailing there necessitate more expensive temperature sensors designed for this purpose.
- a temperature sensor which is arranged in the flow direction of air circulating in the air circulation before the drying device and behind the washing.
- the invention turns away from the known from the above prior art detection of the temperature in the zeolite or downstream of the sorption column, but detects them before. It makes use of the fact that there is a closed air circulation in the dishwasher, which is not subject to significant temperature loss.
- different temperature sensors can be used for the temperature level prevailing upstream of the sorption column.
- Embodiment of the invention a temperature sensor in the air circuit for
- Temperature detection of circulating air can be used.
- Temperature sensor may be a particularly inexpensive standard component, e.g. a PTC or an NTC resistor with a non-linear characteristic, whose mounting and integration in the controller is not difficult.
- any other suitable temperature sensor may be used, such as e.g. linear temperature-dependent resistors or Peltier elements.
- Dishwashing machines with zeolite drying generally have a fan for maintaining the flow of air from the washing container into the sorption column and back. You can also have an additional heating, if z. B. the heat output from the sorption should not be sufficient.
- NTC resistor arranged downstream of the fan and optionally upstream of a heater
- an additional NTC resistor can also be arranged in the washing compartment to directly detect the local temperature.
- an NTC resistor is also not a significant cost factor, so that its use does not make the production of the dishwasher appreciably more expensive.
- At least one temperature sensor can cooperate with a control device for fault location, and preferably the temperature sensor cooperate with a control device for drying control. If, for example, the fan fails, there is a significant increase in temperature due to the lack of cooling air flow on the NTC resistor. Conversely, the NTC resistor can detect a drop in temperature if, for example, the heater stops working. The corresponding signal of the NTC resistor can then be processed in a control device as an error signal.
- an NTC resistor can serve both for controlling the drying and for detecting errors.
- the NTC resistor can be arranged both in the washing compartment and before or after the fan and, if appropriate, in front of a heater, but in any case upstream of the sorption column. Due to the multiple function of the same NTC resistor, an assembly and cost saving can be achieved.
- the stated object is achieved according to the invention in the above-mentioned drying process also in that the temperature of circulating air in the air circuit is detected before the drying device and behind the washing.
- the temperature of circulating air in the air circuit is detected before the drying device and behind the washing.
- discrete sections of the temperature profile are assigned different degrees of drying. They can be used to define an optional premature end of the drying process become. As a result, different drying results can be achieved and the user can be offered additional options.
- the temperature profiles of different drying processes all have a characteristic course. He deviates only in small bandwidths from those of others. According to a further advantageous embodiment of the method according to the invention, deviations in the temperature profile can be evaluated for error control. Thus, if significant deviations from the characteristic temperature profile occur, malfunctions of, for example, the fan can be assumed. They can be processed by a control of the dishwasher to an error message.
- the temperature profiles of the other cleaning processes can also be detected and monitored according to the same principle.
- a drop in temperature during rinsing may, for example, indicate a failure of an additional heater with which the air and with it the rinsing liquor can be additionally heated.
- An increase during rinsing can also be due to the failure of the fan.
- the evaluation of the detected temperature data is used both for controlling the drying and for detecting errors.
- the cost of both the device and the control of the dishwasher can be reduced to save costs.
- the temperature profile detected for the control of the drying process can also be used for fault location, so that a separate temperature detection can be saved as a function check for the fan or the heater.
- FIG. 1 shows a schematic structure of a dishwasher with a temperature sensor in the air circuit
- Figure 2 another structure with an alternative arrangement of
- FIG. 1 and 2 show in principle the relevant for the invention aggregates of a dishwasher. Accordingly, it comprises a rinsing container 1, under which a fan 3, an additional heater 5 and a drying device 7 are arranged with a sorption column 19, wherein in the sorption column 19, a reversible dehydratable desiccant 21 is present. They are successively traversed by air, which transports a connecting them air duct 9 in an air circuit (shown by arrows). The air line 9 branches off at an intake opening 1 1 from the washing compartment 1 and first flows into the fan 3. Its section upstream of the fan 3 is designated A.
- the section B of the air duct 9 extends downstream of the fan 3 and upstream of the auxiliary heater 5. Downstream of the auxiliary heater 5 and upstream of the sorption column extends its section C and downstream of the sorption column up to an injection opening 13 in the washing container 1 extends the section D of the air line 9th
- a temperature sensor according to the prior art has hitherto been arranged either in the sorption column 7 itself or downstream, ie between the sorption column 7 and the injection opening 13 in the section D of the air line 9. Due to the high temperatures occurring in the absorption of water in the absorption column 7 also had the temperature sensor should be designed accordingly.
- FIG. 3 An exemplary temperature profile, which records such a temperature sensor there, is shown in Figure 3 as a curve U. It runs in a coordinate system with the time t as the abscissa and the temperature T as the ordinate. At the beginning of the drying at time a, it first rises sharply until, after a relatively short time, it reaches a vertex at time b and initially strives towards a characteristic temperature ⁇ 'with a large and, later, a lesser gradient. At this temperature, the items to be washed can be assumed to be completely dry. Upon reaching the temperature ⁇ 'at time c, the drying process is therefore terminated.
- an NTC resistor 15 is now arranged as a temperature sensor in the section A of the air line 9 immediately behind the suction port 1 1.
- the temperature of the air measured there is already much cooler than when entering the washing container 1, because on the one hand gives energy to the items to be washed and on the other hand has absorbed moisture from the washing compartment during the drying process.
- this shows the curve V which tends to the lower characteristic temperature ⁇ .
- a simple NTC resistor can be used which does not represent a significant cost factor as a standard component.
- the NTC resistor 15 is also located in a mechanically protected area, so that it can not be accidentally damaged by improper operation, for example when loading the dishwasher. At the same time, however, it detects very well the mean temperatures prevailing in the washing container 1, since the entire air content of the washing container 1 is passed through the suction opening 11 and thus past it.
- FIG. 3 An exemplary temperature profile of the NTC resistor 15 is shown in FIG. 3 as curve V. It has, in principle, the same characteristic curve as the curve U determined according to the prior art. It is only parallel to the prior art in the direction of the ordinate shifted, which reveals the lower temperature level at the location of the NTC resistor 15.
- FIG. 2 differs from the dishwasher according to FIG. 1 only in that now an NTC resistor 17 in section B, ie downstream of the fan
- NTC resistor 17 as well as the NTC resistor 15 according to Figure 1 upstream of the two heat sources of the air circuit, namely the auxiliary heater 5 and the
- Sorption column 7 is determined, the temperature profile measured by him in principle the same curve T of Figure 3.
- the arrangement of the NTC resistor 17 in the section is determined, the temperature profile measured by him in principle the same curve T of Figure 3.
- the NTC resistor 17 can also be used to check the function of the fan 3, since it detects the temperature immediately downstream of the fan and upstream of the two heat sources, the auxiliary heater 5 or the sorption column 7. During operation of the fan, therefore, the cooled air flows from the washing container 1 past the NTC resistor 17 and reaches the additional heater 5 or the sorption column 7, in which it is reheated. Conversely, if the fan 3 fails, the air circulation in the air line 9 and through the washing container 1 also comes to a standstill. Nevertheless, the sorption column 7 continues to emit heat.
- FIG. 3 shows an example of this as a curve W. This deviation from the characteristic curve of the curve V is detected by the control device and processed into a fault message for the area of the air circuit.
- A, B, C, D sections of the air duct 9
Landscapes
- Washing And Drying Of Tableware (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Processing Of Solid Wastes (AREA)
- Detergent Compositions (AREA)
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL08735783T PL2146616T3 (pl) | 2007-04-12 | 2008-04-03 | Rejestrowanie temperatury przy suszeniu zeolitem |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007017284A DE102007017284B3 (de) | 2007-04-12 | 2007-04-12 | Temperaturerfassung bei Zeolithtrocknung |
| PCT/EP2008/054041 WO2008125517A1 (de) | 2007-04-12 | 2008-04-03 | Temperaturerfassung bei zeolithtrocknung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2146616A1 true EP2146616A1 (de) | 2010-01-27 |
| EP2146616B1 EP2146616B1 (de) | 2010-09-15 |
Family
ID=39563333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08735783A Active EP2146616B1 (de) | 2007-04-12 | 2008-04-03 | Temperaturerfassung bei zeolithtrocknung |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US8353991B2 (de) |
| EP (1) | EP2146616B1 (de) |
| CN (1) | CN101657139B (de) |
| AT (1) | ATE481029T1 (de) |
| DE (2) | DE102007017284B3 (de) |
| ES (1) | ES2350285T3 (de) |
| PL (1) | PL2146616T3 (de) |
| WO (1) | WO2008125517A1 (de) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ590109A (en) * | 2008-07-28 | 2012-12-21 | Bsh Bosch Siemens Hausgeraete | Dishwasher machine comprising a sorption drying device in a pot shaped container with a sealed cover lid |
| US8858727B2 (en) * | 2008-07-28 | 2014-10-14 | Bsh Bosch Und Siemens Hausgeraete Gmbh | Dishwasher machine comprising a sorption drying device |
| RU2500334C2 (ru) * | 2008-08-27 | 2013-12-10 | Бсх Бош Унд Сименс Хаусгерете Гмбх | Способ работы посудомоечной машины |
| DE102008039885A1 (de) * | 2008-08-27 | 2010-04-08 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine mit Sorptionstrockenvorrichtung |
| DE102008043576A1 (de) * | 2008-11-07 | 2010-05-12 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Betreiben einer Geschirrspülmaschine |
| KR101736435B1 (ko) | 2010-06-23 | 2017-05-16 | 삼성전자주식회사 | 건조덕트를 구비하는 가전제품 |
| DE102010043467B4 (de) | 2010-11-05 | 2019-04-25 | BSH Hausgeräte GmbH | Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine |
| DE102011000042A1 (de) * | 2011-01-05 | 2012-07-05 | Miele & Cie. Kg | Verfahren zum Durchführen eines Spülprogramms |
| DE102011003955A1 (de) * | 2011-02-10 | 2012-08-16 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine sowie Verfahren zum Betreiben derselben |
| DE102011087322A1 (de) * | 2011-11-29 | 2013-05-29 | Premark Feg L.L.C. | Programmautomat mit Trocknungssystem sowie Verfahren zum Betreiben eines solchen Programmautomaten |
| CN103256806B (zh) | 2012-02-20 | 2015-09-02 | 艾默生电气公司 | 用于干燥材料的装置和方法 |
| US9895044B2 (en) | 2012-08-28 | 2018-02-20 | Whirlpool Corporation | Dishwasher with controlled dry cycle |
| CN105246390A (zh) * | 2013-05-17 | 2016-01-13 | 浦瑞玛柯Feg有限责任公司 | 批量洗碗机及操作批量洗碗机的方法 |
| US9854957B2 (en) * | 2016-01-20 | 2018-01-02 | Haier Us Appliance Solutions, Inc. | Methods for operating dishwasher appliances having energy recovery features |
| CN108103748A (zh) * | 2017-12-19 | 2018-06-01 | 石卫祥 | 一种热循环式衣服加工用烘干设备及烘干方法 |
| CN108195149A (zh) * | 2017-12-30 | 2018-06-22 | 郑州默尔电子信息技术有限公司 | 一种风力均匀加热的节能烘箱 |
| CN109078892A (zh) * | 2018-07-27 | 2018-12-25 | 黄广生 | 一种矿产开采用具有烘干功能的矿石清洗设备 |
| DE102020202940A1 (de) | 2020-03-06 | 2021-09-09 | BSH Hausgeräte GmbH | Geschirrspülmaschine mit zumindest einem Trocknungssystem |
| WO2022124738A1 (ko) * | 2020-12-11 | 2022-06-16 | 엘지전자 주식회사 | 식기세척기 및 그의 제어방법 |
| CN116940273A (zh) * | 2021-04-16 | 2023-10-24 | 三星电子株式会社 | 餐具清洗机 |
| EP4449971A1 (de) * | 2023-04-17 | 2024-10-23 | LG Electronics Inc. | Geschirrspülmaschine mit sorptionstrockenvorrichtung |
| US12407044B1 (en) | 2024-07-12 | 2025-09-02 | Hillary Horvat | Zeolite battery heater |
| US20260053329A1 (en) * | 2024-08-26 | 2026-02-26 | Midea Group Co., Ltd. | Induction heated fan for dishwasher |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1117586B (it) * | 1979-01-23 | 1986-02-17 | Indesit | Dispositivo di regolazione della temperatura per apparecchi elettro domestici |
| TR199700082A2 (xx) * | 1997-02-03 | 1998-08-21 | Ar�El�K A.�. | S�cakl�k�l�er ile nem kontrol� yap�lan bula��k makinas�. |
| US6675639B1 (en) * | 2000-10-25 | 2004-01-13 | Caterpillar Inc | Apparatus and method to detect cylinder faults of internal combustion engines via exhaust temperature monitoring |
| US6694990B2 (en) * | 2001-10-15 | 2004-02-24 | General Electric Company | Dishwasher variable dry cycle apparatus |
| DE10210842A1 (de) * | 2002-03-12 | 2003-09-25 | Electrolux Home Prod Corp | Vorrichtung und Verfahren zur Erfassung des Trockengrades in einem Haushaltsgerät |
| JP2004154565A (ja) * | 2002-11-01 | 2004-06-03 | Samsung Electronics Co Ltd | 温風発生器を備えた食器洗い機 |
| DE10356787A1 (de) | 2003-12-04 | 2005-07-07 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine |
| KR20050059677A (ko) * | 2003-12-15 | 2005-06-21 | 삼성전자주식회사 | 식기세척기 및 그 제어방법 |
| JP2006020754A (ja) * | 2004-07-07 | 2006-01-26 | Matsushita Electric Ind Co Ltd | 洗濯乾燥機 |
| DE102005004097A1 (de) | 2004-12-09 | 2006-06-14 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine und Verfahren zum Betreiben derselben |
-
2007
- 2007-04-12 DE DE102007017284A patent/DE102007017284B3/de not_active Expired - Fee Related
-
2008
- 2008-04-03 DE DE502008001337T patent/DE502008001337D1/de active Active
- 2008-04-03 EP EP08735783A patent/EP2146616B1/de active Active
- 2008-04-03 ES ES08735783T patent/ES2350285T3/es active Active
- 2008-04-03 CN CN2008800117361A patent/CN101657139B/zh active Active
- 2008-04-03 PL PL08735783T patent/PL2146616T3/pl unknown
- 2008-04-03 AT AT08735783T patent/ATE481029T1/de active
- 2008-04-03 WO PCT/EP2008/054041 patent/WO2008125517A1/de not_active Ceased
- 2008-04-03 US US12/531,506 patent/US8353991B2/en active Active
-
2012
- 2012-10-23 US US13/657,893 patent/US8691026B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008125517A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502008001337D1 (de) | 2010-10-28 |
| US8691026B2 (en) | 2014-04-08 |
| US20100101613A1 (en) | 2010-04-29 |
| PL2146616T3 (pl) | 2011-03-31 |
| US20130042499A1 (en) | 2013-02-21 |
| ATE481029T1 (de) | 2010-10-15 |
| EP2146616B1 (de) | 2010-09-15 |
| US8353991B2 (en) | 2013-01-15 |
| CN101657139B (zh) | 2012-07-04 |
| CN101657139A (zh) | 2010-02-24 |
| ES2350285T3 (es) | 2011-01-20 |
| WO2008125517A1 (de) | 2008-10-23 |
| DE102007017284B3 (de) | 2008-11-13 |
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