EP1701649B1 - Lave-vaisselle a dispositif de sechage - Google Patents

Lave-vaisselle a dispositif de sechage Download PDF

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Publication number
EP1701649B1
EP1701649B1 EP04804786.4A EP04804786A EP1701649B1 EP 1701649 B1 EP1701649 B1 EP 1701649B1 EP 04804786 A EP04804786 A EP 04804786A EP 1701649 B1 EP1701649 B1 EP 1701649B1
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EP
European Patent Office
Prior art keywords
air
drying
dishwasher
drying device
wash container
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.)
Not-in-force
Application number
EP04804786.4A
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German (de)
English (en)
Other versions
EP1701649A1 (fr
Inventor
Andreas Appel
Rüdiger EIERMANN
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.)
Filing date
Publication date
Priority claimed from DE102004019331A external-priority patent/DE102004019331A1/de
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1701649A1 publication Critical patent/EP1701649A1/fr
Application granted granted Critical
Publication of EP1701649B1 publication Critical patent/EP1701649B1/fr
Not-in-force 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
    • A47L15/483—Drying arrangements by using condensers

Definitions

  • the invention relates to a dishwasher with a drying device for drying items to be washed.
  • one or more rinsing operations using rinsing liquid are usually carried out in the course of the rinsing operation in order to clean the items to be washed located in the dishwasher.
  • the rinsing liquid is heated before or during a rinsing process by means of electric heaters. After the last rinsing process usually takes place a rinse phase, followed by a drying process followed to dry the items to be washed.
  • a rinse phase followed by a drying process followed to dry the items to be washed.
  • the items to be washed can be dried, for example by self-heating, after the rinsing process, by heating the rinsing liquid for rinsing and thus drying the rinsing product which has been rinsed with clear heat by the self-heating of the items so constructed during the drying process.
  • the rinse liquid z. B. heated in a water heater to a certain temperature and applied over the existing in the dishwasher sprayers on the items to be washed. Due to the relatively high temperature of the final rinse liquid of usually from 65 ° C to 70 ° C is achieved that a sufficiently large amount of heat is transferred to the items to be washed, so that the water adhering to the items evaporated by the heat stored in the items to be washed.
  • a disadvantage of the above-described methods for heating or drying of items to be washed in the dishwashing machines according to the prior art is that the heating of the washing liquid is associated with a high energy requirement and the required heat energy for each heating phase must be regenerated by means of electrical heating elements .
  • the known methods have the disadvantage that the heating of the final rinse liquid and the drying processes themselves are associated with a high energy requirement and the required heat energy is lost after the drying process.
  • the object of the present invention is to provide a drying device with which it is possible, from an economic and hygienic point of view, to quickly dry the moist items to be washed located in the washing container.
  • the dishwashing machine comprises at least one rinsing container for receiving items to be cleaned, at least one spraying device for applying the rinsing liquid to be cleaned in the interior of the rinsing container and a drying device for drying the items to be washed, wherein an air stream for drying the items to be washed is removed from the drying item. device is introduced via the sprayer in the washing.
  • An advantage of the introduction of the air flow for drying the items to be washed by the drying device via the spraying device into the washing container is that the spraying devices are generally arranged in the immediate vicinity of the items to be washed and thereby the air flow exiting the spray device for drying the items to be washed as directly as possible comes into contact with the items to be washed. Furthermore, a more uniform distribution of the hot air within the washing container is achieved by the drying device according to the invention than was possible with previously known drying devices. Both the uniform distribution of hot air and the direct contact of the air flow with the items to be washed lead to a higher drying performance and thus to a lower energy consumption when carrying out the drying process.
  • the drying device In the dishwasher according to the invention, only the air in the washing container is circulated by the drying device.
  • the drying device according to the invention is arranged inside the dishwasher and circulates the air in the washing, preferably by means of a blower.
  • the dishwasher according to the invention there is a closed air circuit, whereby the advantage is achieved that no moisture-laden air is released to the ambient atmosphere. In this way deleterious effects on the furniture, e.g. Mold formation is avoided and the items to be washed do not come into contact with outside air during the drying process, so that a high hygienic standard can be guaranteed.
  • the drying device is provided with at least one heating device, e.g. a hot air blower equipped with the aid of which the air circulated in the washing container is heated. It is particularly advantageous if the heating device heats the air passing by, preferably immediately before it is introduced into the spray device. This allows the air to be heated prior to re-entry into the purge vessel to provide the air with a greater capacity to absorb moisture, which accelerates the drying process. After the air has absorbed the moisture from the items to be washed, it is conveyed via the blower through the suction port back into the drying device. When flowing through the condensation section of the air is removed from the moisture, when passing the heater, the air is heated and introduced via the sprayer back into the washing, whereby the air circuit is closed.
  • a heating device e.g. a hot air blower equipped with the aid of which the air circulated in the washing container is heated.
  • the warm air rises naturally in the washing from bottom to top, it absorbs moisture from the dishes, z. B. deflected to the container ceiling to the outer walls and then sinks back into the lower portion of the washing.
  • the air flow for drying the washware from the drying device is therefore via a spray arm in the lower Area of the washing introduced.
  • the air flow is introduced not only in the lower area in the washing, but also in close proximity to the larger pieces of crockery, which usually store in the lower basket of the dishwasher.
  • the spray arms are often rotatably mounted and provided with outlet nozzles for the rinsing liquid, which are each aligned in a certain direction, so that the exiting through the outlet nozzle rinsing fluid accelerates the spray arm in a particular direction of rotation.
  • the air flow can be passed through the spray arm with the aid of the blower at such a flow rate that the accelerating effect of the spray nozzles arranged at an angle also causes the spray arm to rotate due to the exit of the drying air, which results in a particularly good distribution of the drying air in the washing container Has.
  • the drying air emerging from a spray arm in the lower region of the washing container rises substantially in the middle of the washing container and then falls down again on the sides of the washing container.
  • This circulation of the drying air in the washing container is utilized in the dishwasher according to the invention, in that at least one wall of the washing container acts as a condensation surface, at which moisture contained in the air is precipitated.
  • the liquid can evaporate more quickly on the items to be washed during the drying process and be transported away by the relatively dry air flow. The drying process is thereby accelerated.
  • the condensation of the humidity on the inner wall of the washing can still be supported if at least one wall of the washing is in heat-conductive contact with an outer wall of the dishwasher.
  • the effect is exploited that the standing in the heat-conductive contact with an outer wall of the dishwasher wall of the washing container has a lower temperature than the air in the washing, thereby constantly cooled and thus acts as a condensation surface.
  • the outer walls of the dishwasher generally consist of a metal housing, the housing of the dishwasher is particularly well suited as a cooling surface. In this way, a good heat dissipation from the wall of the washing container to an outer wall of the dishwasher and the environment is ensured.
  • a wall of the washing container acting as a condensation surface it can also be in heat-conducting contact with a heat exchanger of the dishwasher.
  • a heat exchanger of the dishwasher By filling the heat exchanger during the drying process with cool fresh water from the house water line this has a cooling potential.
  • the heat exchanger absorbs the resulting heat of condensation and keeps the wall of the washing container cool, with the water in the heat exchanger slowly heated. This preheated water can then be used for a subsequent rinsing process.
  • the drying device comprises at least one suction opening for sucking the air from the washing container into the drying device, a blow-out opening for discharging the air from the drying device into the spraying device, a transport path between the on -saugö réelle and the blow-out opening and a fan for conveying the air from the suction port through the transport path to the exhaust opening, wherein a wall of the transport path acts at least partially as a condensation surface on which precipitates moisture contained in the air.
  • the drying device expediently has a discharge, through which at least the water precipitated in the transport path is discharged.
  • the precipitated in the transport path of the drying device water can be passed, for example, in the sump of the dishwasher or transported through the drain pump from the dishwasher.
  • the condensation effect of the drying device is increased even further when the suction opening of the drying device opens into the upper region of the rinsing container and the blow-out opening of the drying device opens into the lower region of the rinsing container. Since the moist, warm air is in the upper region of the rinsing container, the arrangement of the suction opening in the upper region of the rinsing container ensures that the air is conveyed from the upper region of the rinsing container into the drying device, where the highest humidity is present. Due to the arrangement of the exhaust opening in the lower region of the washing container, the above-described circulation movement of the air through the washing container and the drying device is favored.
  • the blower, the heater and / or the heat exchanger with the program control of the dishwasher is connected so that, accordingly, the running program, the operation of the fan, the heating device and / or the heat exchanger is regulated.
  • the air stream for drying the items to be washed is introduced from the drying device via spraying devices, such as spray straw, into the washing compartment in the lower region of the washing container.
  • a dishwasher G comprises a washing container 1 for receiving items to be cleaned, which is surrounded by the housing 3 of the dishwasher G.
  • a washing container 1 for receiving items to be cleaned, which is surrounded by the housing 3 of the dishwasher G.
  • an upper spray arm 5 and a lower spray arm 4 are rotatably arranged, via which the items to be washed aufschlagt during flushing with rinsing liquid.
  • the air in the washing container is circulated via a drying device (not shown), wherein the air is sucked out of the washing container by means of a blower, heated in the drying device and returned to the washing container as drying air via the spraying device 4, 5 1 is initiated.
  • the drying air is introduced only via the lower spray arm 4 from the drying device in the washing compartment 1.
  • the drying air emerging from the lower spray arm 4 in the lower region of the washing container 1 rises substantially in the middle of the washing container 1, takes up moisture from the items to be washed and then sinks down again on the sides of the washing container 1.
  • an essentially symmetrical circulation of the drying air in the washing compartment 1 takes place with respect to the axis A which is shown in dash-dotted lines in FIG.
  • This circulation of the drying air is used to increase the drying performance by at least one wall 2 of the washing container 1 acts as a condensation surface, at which the moisture contained in the drying air precipitates.
  • the existing in the washing container 1 humidity is reduced and accelerates the drying process during the drying process.
  • the wall 2 of the washing container 1 is in heat-conducting contact with an outer wall 3 of the dishwasher G, which is preferably made of metal.
  • the wall 2 of the Washing container 1 is constantly cooled by the outer wall 3 of the dishwasher G, thereby has a lower temperature than the air in the washing container 1 and can thus act as a condensation surface.
  • this may also be in heat-conducting contact with a heat exchanger (not shown) of the dishwasher G, wherein the heat exchanger is preferably filled with cool water during the drying process.
  • the heat exchanger is housed in the side wall of the dishwasher G, so that a heat-conducting contact between the wall 2 of the washing container 1 and the heat exchanger is easy to produce.
  • this By filling the heat exchanger during the drying process with cool fresh water from the domestic water pipe, this then has a cooling potential, which it emits via the heat-conductive connection between the heat exchanger and acting as a condensation surface wall 2 of the washing container 1, wherein the water in the heat exchanger is slowly heated ,
  • FIG. 2 shows a sectional view through a drying device for a dishwasher in a second preferred embodiment according to the present invention.
  • the drying device comprises a suction opening 10 for sucking air from the washing container 1 into the drying device and blow-out opening 9 for blowing out the drying air into the spraying device 4, 5 and thus into the washing container 1.
  • a blower 7 is provided for conveying the air from the suction port through a transport path 11 to the exhaust port 9. In its flow path through the transport path 11, the air passes through an electric heater 8, whereby the air is heated and thus obtains a higher capacity for absorbing moisture.
  • a wall of the transport section 11 acts at least partially as Kondensati onsthesis, reflected in the moisture contained in the air.
  • the drying device further has a discharge line 12 through which the water deposited in the transport section 11 is discharged.
  • Both the fan 7 and the heating device 8 are connected to the program control (not shown) of the dishwasher G so that the operation of the fan and the heating device is controlled in accordance with the running program.
  • the blower 2 connected to a control unit (not shown) is activated and sucks in moist air through the suction opening 10 the washing compartment 1 at.
  • the moisture can be at least partially reflected and derived via the discharge line 12 from the drying device.
  • the heater 7 the air is heated and thus is able to absorb a larger amount of moisture.
  • the outlet opening 9 the now heated and dehumidified drying air via the spray device 4, 5, preferably via the lower spray arm 4, again introduced into the washing compartment 1 and can circulate there to dry the wet items in the manner described above.
  • the targeted circulation of the air through the washing container 1 via the spraying device 4, 5 and the removal of the humidity is achieved in the dishwasher G according to the present invention, both a homogeneous heat distribution within the drying air and a uniform flow through the washing container 1 , which has a higher efficiency and thus better energy utilization for the operation of the dishwasher G result.

Claims (11)

  1. Lave-vaisselle comprenant au moins une cuve de lavage (1) destinée à loger des produits à nettoyer, au moins un dispositif d'arrosage (4, 5) destiné à alimenter les produits à nettoyer en liquide de lavage dans l'espace intérieur de la cuve de lavage (1) et comprenant un dispositif de séchage (7, 8, 9, 10, 11) destiné à sécher les produits à nettoyer, un courant d'air destiné à sécher les produits à nettoyer étant introduit dans la cuve de lavage (1) par le dispositif de séchage (7, 8, 9, 10, 11) par l'intermédiaire du dispositif d'arrosage (4, 5), le dispositif de séchage (7, 8, 9, 10, 11) étant disposé à l'intérieur du lave-vaisselle et mettant en circulation uniquement l'air se trouvant dans la cuve de lavage (1), de préférence à l'aide d'un ventilateur (7), et au moins une paroi (2) de la cuve de lavage (1) agissant comme surface de condensation sur laquelle se dépose l'humidité contenue dans l'air.
  2. Lave-vaisselle selon la revendication 1, le dispositif de séchage (7, 8, 9, 10, 11) présentant au moins un dispositif de chauffage (8) destiné à échauffer l'air.
  3. Lave-vaisselle selon la revendication 2, le dispositif de chauffage (7) échauffant l'air qui passe devant lui de préférence directement avant l'introduction dans le dispositif d'arrosage (4, 5).
  4. Lave-vaisselle selon l'une quelconque des revendications précédentes, le courant d'air destiné à sécher les produits à nettoyer étant introduit dans la cuve de lavage (1) dans la partie inférieure de la cuve de lavage par le dispositif de séchage (7, 8, 9, 10, 11) par l'intermédiaire d'un bras d'arrosage (5).
  5. Lave-vaisselle selon l'une quelconque des revendications précédentes, au moins une paroi (2) de la cuve de lavage (1) étant en contact conducteur de chaleur avec une paroi extérieure (3) du lave-vaisselle (G).
  6. Lave-vaisselle selon l'une quelconque des revendications précédentes, au moins une paroi de la cuve de lavage (1) étant en contact conducteur de chaleur avec un échangeur de chaleur du lave-vaisselle (G) et l'échangeur de chaleur pouvant être rempli avec de l'eau froide de préférence pendant l'opération de séchage.
  7. Lave-vaisselle selon l'une quelconque des revendications précédentes, le dispositif de séchage (7, 8, 9, 10, 11) comprenant au moins un orifice d'aspiration (10) pour aspirer l'air provenant de la cuve de lavage (1) en l'amenant dans le dispositif de séchage (7, 8, 9, 10, 11), un orifice de soufflage (9) destiné à conduire l'air du dispositif de séchage (7, 8, 9, 10, 11) dans le dispositif d'arrosage (4, 5), une trajectoire de transport (11) entre l'orifice d'aspiration (10) et l'orifice de soufflage (9), et un ventilateur (7) destiné à transporter l'air de l'orifice d'aspiration (10) vers l'orifice de soufflage (9) au moyen de la trajectoire de transport (11), une paroi de la trajectoire de transport (11) agissant au moins en partie comme une surface de condensation sur laquelle se dépose l'humidité contenue dans l'air.
  8. Lave-vaisselle selon la revendication 7, l'orifice d'aspiration du dispositif de séchage (7, 8, 9, 10, 11) étant disposé dans la partie supérieure de la cuve de lavage (1) et l'orifice de soufflage (9) du dispositif de séchage (7, 8, 9, 10, 11) étant disposé dans la partie inférieure de la cuve de lavage (1).
  9. Lave-vaisselle selon l'une quelconque des revendications 7 ou 8, le dispositif de séchage (7, 8, 9, 10, 11) présentant une déviation (12) au moyen de laquelle au moins l'eau déposée dans la trajectoire de transport (11) est évacuée.
  10. Lave-vaisselle selon l'une quelconque des revendications 6 à 9, le ventilateur (12), le dispositif de chauffage (8) et/ou l'échangeur de chaleur étant asservis par une commande de programme du lave-vaisselle (G).
  11. Lave-vaisselle selon la revendication 4, le courant d'air destiné à sécher les produits à laver étant introduit dans la cuve de lavage (1) du dispositif de séchage (7, 8, 9, 10, 11) dans la partie inférieure de la cuve de lavage par l'intermédiaire de dispositifs d'arrosage, tels que des tubes d'arrosage.
EP04804786.4A 2003-12-22 2004-12-13 Lave-vaisselle a dispositif de sechage Not-in-force EP1701649B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10360562 2003-12-22
DE102004019331A DE102004019331A1 (de) 2003-12-22 2004-04-21 Geschirrspülmaschine mit Trocknungseinrichtung
PCT/EP2004/053423 WO2005060821A1 (fr) 2003-12-22 2004-12-13 Lave-vaisselle a dispositif de sechage

Publications (2)

Publication Number Publication Date
EP1701649A1 EP1701649A1 (fr) 2006-09-20
EP1701649B1 true EP1701649B1 (fr) 2015-03-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04804786.4A Not-in-force EP1701649B1 (fr) 2003-12-22 2004-12-13 Lave-vaisselle a dispositif de sechage

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EP (1) EP1701649B1 (fr)
WO (1) WO2005060821A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1392563B1 (it) 2008-12-22 2012-03-09 Indesit Co Spa Metodo per l'asciugatura di stoviglie in una macchina lavastoviglie e macchina che utilizza tale metodo
EP2233057A1 (fr) * 2009-03-23 2010-09-29 Bonferraro S.p.A. Machine à laver avec un système de séchage perfectionné et cycle opératoire correspondant
DE102015013364B4 (de) * 2015-10-16 2023-05-25 Torsten Weigle Vortrocknungseinrichtung für einen Geschirrspüler, Geschirrspüler mit der Vortrocknungseinrichtung, Verfahren zum Vortrocknen von Geschirr

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8026939U1 (de) * 1980-10-08 1982-02-04 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Geschirrspuelmaschine
DE3346522A1 (de) * 1983-12-22 1985-07-04 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Geschirrspuelmaschine fuer den haushalt
JP3744049B2 (ja) 1996-03-15 2006-02-08 松下電器産業株式会社 食器洗い乾燥機
ATE255844T1 (de) 1999-05-26 2003-12-15 Miele & Cie Programmgesteuerte geschirrspülmaschine mit einer einrichtung zum trocknen von geschirr

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Publication number Publication date
EP1701649A1 (fr) 2006-09-20
WO2005060821A1 (fr) 2005-07-07

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