EP1833352B1 - Geschirrspülmaschine und verfahren zum betreiben derselben - Google Patents

Geschirrspülmaschine und verfahren zum betreiben derselben Download PDF

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Publication number
EP1833352B1
EP1833352B1 EP05803407.5A EP05803407A EP1833352B1 EP 1833352 B1 EP1833352 B1 EP 1833352B1 EP 05803407 A EP05803407 A EP 05803407A EP 1833352 B1 EP1833352 B1 EP 1833352B1
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EP
European Patent Office
Prior art keywords
drying
sensor
air
values
sorption
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.)
Active
Application number
EP05803407.5A
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German (de)
English (en)
French (fr)
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EP1833352A1 (de
Inventor
Helmut Jerg
Kai Paintner
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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.)
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Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL05803407T priority Critical patent/PL1833352T3/pl
Publication of EP1833352A1 publication Critical patent/EP1833352A1/de
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Publication of EP1833352B1 publication Critical patent/EP1833352B1/de
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    • 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
    • A47L15/48—Drying arrangements
    • A47L15/481—Drying arrangements by using water absorbent materials, e.g. Zeolith

Definitions

  • the invention relates to a dishwasher with a rinsing container and devices for rinsing dishes by means of rinsing liquor and with a Sorptionstrockenvorraum which is air conductively connected to the rinse and having a sorbent column with reversibly dehydratable material, wherein the sorbent column is used to dry the dishes.
  • Such a dishwasher is from the EP 0 358 279 A1 known.
  • the invention further relates to a method for operating a dishwasher with at least one partial program step "drying", wherein in this part program step from a washing container of the dishwasher and / or ambient air is passed through a sorption column with reversibly dehydratable material in the washing and air during passage through the Sorption column is deprived of moisture.
  • Conventional dishwashing machines are known to have a rinsing process whose program sequence generally consists of at least one partial program step "pre-rinsing", one sub-program step “cleaning”, at least one subprogram step “intermediate rinsing", one subprogram step “rinsing” and one subprogram step “drying”.
  • pre-rinsing partial program step
  • cleaning at least one subprogram step "intermediate rinsing”
  • a further disadvantage is that damage to the surrounding kitchen furniture can not be ruled out by discharging the water vapor produced during the regeneration of the reversibly dehydratable material to the outside.
  • the regeneration is associated with an additional energy requirement, which is incurred in addition to the energy required during the sub-program steps.
  • the Applicant discloses a dishwasher with a rinsing container and devices for rinsing crockery by means of rinsing, which has a sorptionskolonne air-conductively connected, reversibly dehydratable material containing the rinsing, wherein the sorbent on the one hand for drying the dishes and on the other hand for the desorption of the sorption used thermal energy Heating the rinsing liquor and / or the dishes located in the washing container is at least partially used.
  • a dishwashing machine is known in which the atmosphere in the dishwasher container is heated by means of a heater for drying the items to be washed and thereby the items to be washed are heated in the dishwasher container so that the items to be washed emit moisture. This moisture then condenses on a condensation surface, with the condensation running to the dishwasher sump.
  • a moisture sensor measures the condensation of moisture on a condensation surface of the rinsing chamber.
  • the WO 98/33427 A1 discloses a dishwasher with an exhaust air drying device.
  • a temperature sensor measures a temperature drop in the rinse tank , which is based on the fact that cold fresh air flows into the rinse tank.
  • the object of the present invention is to provide a dishwasher and method for operating the same, with which it is possible to efficiently clean and dry the items in the washing container located in the washing and the associated energy consumption as low as possible hold.
  • the dishwashing machine has a rinsing container and devices for rinsing dishes by means of rinsing liquor and a sorption drying device, which is air-conduction-connected to the rinsing container and has a sorption column with reversibly dehydratable material, wherein the sorption column is used for drying the dishes, wherein a sensor means depending on the course of the washing program, wherein the sensor means is preferably arranged in the Sorptionstrockenvorraum.
  • the sensor means may also be arranged outside the sorption drying device, for. B. in the washing container at the inlet.
  • the invention proposes to arrange a sensor means in the dishwasher, more precisely in the sorption drying apparatus, in order to adapt a respective partial program step to the situation.
  • a significant energy saving is possible. This is especially the case when the dishwasher is operated, for example, with only a small load.
  • Both a partial program step with rinsing liquid to be heated (rinsing liquor) and the partial program step "drying" can be carried out with the same cleaning or drying effect in a shorter time, resulting in an energy saving due to the time saved compared to a time program control.
  • the implementation of the shorter times of the partial program steps takes place on the basis of the assessment of the state of the reversibly dehydratable material in order to influence the course of the washing program, for example to start the next partial program step or to terminate the partial program step "drying".
  • the wash program comprises at least one partial program step "drying", wherein the sensor means the state of the reversibly dehydratable material at least during the partial program step "drying" is detected and the one or more sensor values generated by the sensor means connected to the sensor means control and Evaluation device can be fed, which is adapted or designed to evaluate the sensor value or the sensor values and to influence the Spülprogrammablauf. Since the partial program step "Drying" is usually at the end of each wash program, influencing the program sequence consists in terminating the wash program.
  • the sensor means is designed as a temperature sensor.
  • the temperature sensor is preferably arranged in the sorption drying device such that it can detect the temperature value prevailing in the sorption column or that prevailing at an outlet of the sorption column. This procedure is based on the finding that the outlet temperature of the air conducted through the sorption drying device during drying follows a characteristic temperature profile. For example, if the dishwasher is only partially loaded, less water will adhere to the items to be washed, which must be dried. As soon as the items to be washed and the rinsing container are dry, this manifests itself in a drop in the temperature of the air conducted through the sorption drying apparatus.
  • Influencing the wash program sequence i. a termination of the drying process
  • a value supplied by the sensor means in the control and evaluation device by a comparison with a threshold value.
  • the control and evaluation device is set up or designed to compare the sensor values supplied by the sensor means with a threshold value.
  • control and evaluation device detects the time profile of the values supplied by the sensor means, and detects the slope of the profile of the sensor values or a turning point in the slope of the course as a criterion for influencing the Spülprogrammablaufs.
  • control and evaluation device is set up or designed to detect the time profile of the sensor values supplied by the sensor means, and to detect the slope of the profile of the sensor values or a turning point in the slope of the profile as a criterion for influencing the wash program sequence ,
  • An influence of the rinsing program sequence can be realized according to a further embodiment of the invention by forming the sensor means as a humidity sensor.
  • the moisture sensor is preferably arranged in the sorption drying device such that it can detect the moisture prevailing at an outlet of the sorption column in the air stream.
  • the evaluation in the control and evaluation means can take place on the basis of a comparison of the value supplied by the sensor means in the control and evaluation device with a threshold value.
  • the control and evaluation device can detect the time profile of the values supplied by the sensor means and detect the slope of the profile of the sensor values or a point of inflection in the slope of the profile as a criterion for influencing the Spülprogrammablaufs.
  • the measured temperature values are compared with a threshold value in order to initiate termination of the partial program step "drying" when the threshold value is exceeded or not reached.
  • the time profile of the measured temperature values is recorded and the slope of the course of the temperature values or a turning point in the slope of the course of the temperature values is used as criterion for the termination of the partial program step "drying".
  • the air humidity of the air passed through the sorption column is measured in or after the sorption column in order to initiate the end of the partial program step "drying" depending on the measured moisture value or the measured moisture values. In a corresponding manner, this can be initiated by a threshold value comparison or by monitoring the time profile of the moisture values.
  • FIG. 1 shows a schematic representation of a dishwasher 1 according to the invention with a washing container 2, are arranged in the baskets 3, 4 for the classification of not Pictured items to be washed.
  • the dishwasher 1 has a liquid-conducting connected to the washing container 2, reversibly dehydratable material 11, for. B. zeolite, containing sorption column 10, wherein the sorbent column 10, as will be explained in more detail below, on the one hand used for drying and on the other hand for heating conducted air, in particular as in the DE 103 53 774 and / or the DE 103 53 775 described.
  • the content of these applications will be included in this application as far as appropriate.
  • the rinsing container 2 has an outlet 5 arranged in the described embodiment in its upper region with a line 6 to the sorption column 10 and an inlet 8 arranged in its lower region in the described embodiment with a line 7 from the sorption column 10.
  • a fan 9 is arranged, which supplies the sorption column 10 air from the washing container 2.
  • an electrical heating element 12 is arranged in the sorption column 10 in one embodiment shown.
  • a sensor 13 is furthermore arranged in the flow direction at the outlet of the sorption column 10, which may be formed as a temperature or humidity sensor. Alternatively, it is also possible to arrange the sensor inside the sorption column 10.
  • a dishwasher is known to have a rinsing process whose program sequence generally consists of at least one partial program step "pre-rinsing", one sub-program step “cleaning”, at least one sub-program step “intermediate rinsing", one sub-program step “rinsing” and one sub-program step “drying”.
  • the blower 9 is turned on.
  • the airway is indicated by the arrows A, B and C.
  • the air introduced by the blower 9 via the line 6 into the sorption column 10 is deprived of all moisture by the reversibly dehydratable material 11.
  • the air is heated by the liberated in the sorption column condensation heat of moisture or water vapor, which advantageously increases the moisture absorption capacity of the air.
  • the now heated, eg up to 40 - 70 ° C, and very dry air now passes via the line 7 back into the washing container 2.
  • the introduced in this, heated air is completely dry and has a high heat-up capacity due to the higher temperatures Moisture on. It rises in the washing container 2 upwards and absorbs the residual moisture on the items to be washed. It is now, as already described above, fed back to the sorption column 10.
  • air from the washing container 2 during a partial program step to be heated or possibly already heated rinsing liquid, preferably during the part program step "cleaning" and / or "pre-wash", in the described embodiment by the sorption column 10th and returned to the washing container 2 again.
  • the fan 9 is turned on.
  • the airway is indicated by the arrows A, B and C.
  • the heater 12 is turned on to make the desorption of the reversibly dehydratable material 11.
  • reversibly dehydratable material 11 is heated to very high temperatures for desorption.
  • the stored liquid emerges as hot water vapor.
  • the blower 9 By the passage of air by means of the blower 9 through the lines 6, 7 accordingly the air path of the arrows A, B and C, the steam is passed into the washing tank 2 and also the air heated in the washing.
  • the introduction of the hot steam and the heated air into the washing compartment 2 during the "cleaning" part program step into the washing compartment is largely sufficient to adequately heat the washing liquor and / or the dishes.
  • a further heating largely eliminated, and the energy used for desorption can be almost completely used for heating the wash liquor and / or the dishes except for the low energy required to overcome the binding forces between water and reversibly dehydratable material. This ensures not only energy savings but also efficient cleaning of the items to be washed.
  • the energy consumption during the "drying" part program step is essentially caused by the operation of the blower for passing the air out of the washing container 2 through the sorption column 10 and back into the washing container.
  • the outlet temperature of the air from the sorption column follows a characteristic temperature profile which in FIG. 2 is shown. Due to the initially very humid, passed through the sorbent 10, air produced during dehumidifying a very high heat of condensation, which heats up the reversibly dehydratable material and thus the air passed through this to temperatures up to about 160 ° C.
  • the air passed through the sorbent column 10 becomes more and more dry, so that the heat of condensation formed in the reversibly dehydratable material decreases, and the air passed through the sorbent column has a lower temperature.
  • a certain temperature can be assigned to a certain degree of dryness.
  • a temperature of about 57 ° C corresponds to a degree of drying of about 98%.
  • This characteristic temperature which can be used as a threshold value for comparison with the temperature values determined by the temperature sensor, depends in practice on how the sorption column is formed. Possible influencing factors here are the flow resistance of the sorption column, which depends essentially on the diameter of the zeolite spheres and the geometric dimensions of the sorption column.
  • FIG. 2 the temperature curves of the air emerging from the sorption column are shown once for the case of a normal load (case 1) and once for the case of a small load (case 2). It can be clearly seen that in the case of a low loading of the dishwasher, the temperature drops more after reaching its peak value, so that the threshold (broken line at about 57 ° C) is reached at an earlier time. As a result, this means that the drying process is completed faster in a lightly loaded dishwasher than in a normally loaded dishwasher.
  • the gradient of the course of the measured temperature can also be used as a criterion for terminating the partial program step "drying". Furthermore, it is possible to detect a characteristic inflection point in the course of the temperature.
  • the measured moisture is used instead of the temperature to influence the rinsing program sequence.
  • the procedure corresponds in principle to the one just described.
  • a further shortening of the drying time results when in the partial program step preceding the partial program step "drying", usually rinsing, a heating of the treatment liquid or of the product to be rinsed has taken place.
  • the temperature profile in the partial program step "drying” then follows a higher slope, whereby the drying process can be further accelerated.

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  • Washing And Drying Of Tableware (AREA)
EP05803407.5A 2004-12-09 2005-10-18 Geschirrspülmaschine und verfahren zum betreiben derselben Active EP1833352B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05803407T PL1833352T3 (pl) 2004-12-09 2005-10-18 Zmywarka do naczyń i sposób jej eksploatacji

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004059423 2004-12-09
DE102005004097A DE102005004097A1 (de) 2004-12-09 2005-01-28 Geschirrspülmaschine und Verfahren zum Betreiben derselben
PCT/EP2005/055325 WO2006061280A1 (de) 2004-12-09 2005-10-18 Geschirrspülmaschine und verfahren zum betreiben derselben

Publications (2)

Publication Number Publication Date
EP1833352A1 EP1833352A1 (de) 2007-09-19
EP1833352B1 true EP1833352B1 (de) 2014-10-08

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US (1) US8961706B2 (pl)
EP (1) EP1833352B1 (pl)
JP (1) JP2008522685A (pl)
KR (1) KR20070085899A (pl)
AU (1) AU2005313466B2 (pl)
BR (1) BRPI0518878A2 (pl)
DE (1) DE102005004097A1 (pl)
ES (1) ES2517841T3 (pl)
PL (1) PL1833352T3 (pl)
RU (1) RU2373830C2 (pl)
WO (1) WO2006061280A1 (pl)

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DE102008039888B4 (de) * 2008-08-27 2013-11-28 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit Sorptionstrockenvorrichtung
US9055859B2 (en) * 2008-07-28 2015-06-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Method for operation of a dishwasher
PL2323531T3 (pl) * 2008-07-28 2015-03-31 Bsh Hausgeraete Gmbh Zmywarka do naczyń z systemem suszenia sorpcyjnego
DE102008039896A1 (de) * 2008-08-27 2010-03-04 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit Sorptionstrockenvorrichtung
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DE102012203321B4 (de) * 2012-03-02 2016-06-16 BSH Hausgeräte GmbH Haushaltsgerät mit einer Luftheizung
DE102012203320B4 (de) * 2012-03-02 2016-06-16 BSH Hausgeräte GmbH Haushaltsgerät mit einer durch eine Elektrode abgesicherten Luftheizung
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Publication number Publication date
WO2006061280A1 (de) 2006-06-15
AU2005313466B2 (en) 2011-03-31
US20080149142A1 (en) 2008-06-26
JP2008522685A (ja) 2008-07-03
RU2007120224A (ru) 2009-01-20
US8961706B2 (en) 2015-02-24
ES2517841T3 (es) 2014-11-04
PL1833352T3 (pl) 2015-03-31
EP1833352A1 (de) 2007-09-19
BRPI0518878A2 (pt) 2008-12-16
RU2373830C2 (ru) 2009-11-27
DE102005004097A1 (de) 2006-06-14
KR20070085899A (ko) 2007-08-27
AU2005313466A1 (en) 2006-06-15

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