EP1701649A1 - Geschirrspülmaschine mit trocknungseinrichtung - Google Patents
Geschirrspülmaschine mit trocknungseinrichtungInfo
- Publication number
- EP1701649A1 EP1701649A1 EP04804786A EP04804786A EP1701649A1 EP 1701649 A1 EP1701649 A1 EP 1701649A1 EP 04804786 A EP04804786 A EP 04804786A EP 04804786 A EP04804786 A EP 04804786A EP 1701649 A1 EP1701649 A1 EP 1701649A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drying
- air
- dishwasher
- drying device
- washing 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.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 113
- 238000005406 washing Methods 0.000 claims description 73
- 239000007921 spray Substances 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000009833 condensation Methods 0.000 claims description 18
- 230000005494 condensation Effects 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002244 precipitate Substances 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
- A47L15/483—Drying arrangements by using condensers
Definitions
- the invention relates to a dishwasher with a drying device for drying dishes.
- one or more rinsing operations are usually carried out in the course of the rinsing operation, using rinsing liquid, in order to clean the items to be washed in the dishwasher.
- the rinsing liquid is heated by means of electrical heaters before or during a rinsing process.
- a rinsing phase followed by a drying process to dry the items to be washed.
- Various methods are known for drying items to be washed in a dishwasher.
- the items to be washed can be dried, for example, by their own heat after the rinsing process, by heating the rinsing liquid for rinsing and thus drying the hot rinsed items by themselves due to the inherent heat of the items to be washed during the drying process.
- the rinse aid is z. B. heated to a certain temperature in a continuous-flow heater and applied to the items to be washed by the spray devices provided in the dishwasher. Due to the relatively high temperature of the rinse aid liquid, which is usually from 65 ° C. to 70 ° C., a sufficiently large amount of heat is transferred to the wash ware so that the water adhering to the wash ware evaporates due to the heat stored in the wash ware.
- a disadvantage of the above-described methods for heating or drying dishes in the dishwashers according to the prior art is that the heating of the washing liquid is associated with a high energy requirement and the thermal energy required for each heating phase by means of electrical heating elements must be generated.
- the known methods have the disadvantage that the heating of the rinse aid and the drying processes themselves are associated with a high energy requirement and the thermal energy required is lost after the drying process.
- the object of the present invention is therefore to provide a drying device with which it is possible, from an economical and hygienic point of view, to quickly dry the damp wash ware located in the washing compartment.
- the dishwasher according to the invention comprises at least one washing container for receiving items to be cleaned, at least one spray device for applying washing liquid to the items to be cleaned in the interior of the washing container and a drying device for drying the items to be washed, an air stream for drying the items to be washed from the drying device is introduced into the rinsing container via the spray device.
- An advantage of introducing the air flow for drying the wash ware from the drying device via the spray device into the wash container is that the spray devices are generally arranged in the immediate vicinity of the wash ware and thus the air flow emerging from the spray device for drying the wash ware comes into direct contact with the items to be washed. Furthermore, the drying device according to the invention achieves a more uniform distribution of the warm air within the washing container than was possible with previously known drying devices. Both the uniform distribution of warm air and the direct contact of the air flow with the items to be washed lead to a higher drying performance and / or to a lower energy expenditure when carrying out the drying process.
- the drying device only 200301904
- the drying device is expediently arranged inside the dishwasher and circulates the air in the washing container, preferably with the aid of a blower.
- this embodiment of the dishwasher according to the invention there is a closed air circuit, which achieves the advantage that no moisture-laden air is released into the ambient atmosphere. In this way, harmful influences on the furniture, such as Mold formation is avoided and the wash ware does not come into contact with outside air during the drying process, so that a high hygienic standard can be guaranteed.
- the drying device is equipped with at least one heating device, such as e.g. a hot air blower, with the help of which the air circulated in the washing container is heated.
- a heating device heats the air flowing past it, preferably immediately before it is introduced into the spray device. This allows the air to be warmed before re-entering the rinse tank to give the air a higher moisture absorption capacity, which speeds up the drying process.
- the air After the air has taken up the moisture from the items to be washed, it is conveyed back into the drying device via the fan through the suction opening.
- the condensation section flows through, the air is removed from the moisture, when it passes the heating device, the air is heated and then returned to the washing container via the spray device, which closes the air circuit.
- the warm air in the rinse tank naturally rises from the bottom up, thereby absorbing moisture from the wash items.
- B deflected to the outer walls of the container ceiling and then sinks back into the lower region of the washing container.
- the air flow for drying the wash ware is therefore initiated by the drying device via a spray arm in the lower region of the wash container.
- the air flow is not only introduced into the washing compartment in the lower area, but also in the immediate vicinity of the larger pieces of crockery, which are usually stored in the lower crockery basket of the dishwasher.
- the spray arms are often rotatably mounted and provided with outlet nozzles for the washing liquid, each of which is oriented in a specific direction, so that the washing liquid emerging through the outlet nozzles accelerates the spray arm in a specific direction of rotation.
- the airflow can with the help 200301904
- drying air emerging from a spray arm in the lower region of the washing compartment rises essentially in the middle of the washing compartment and then falls down again on the sides of the washing compartment.
- This circulation of the drying air in the washing container is used in another preferred embodiment of the dishwasher according to the invention in that at least one wall of the washing container acts as a condensation surface on which moisture contained in the air condenses. This allows the liquid on the wash items to evaporate more quickly during the drying process and be carried away by the relatively dry air flow. This speeds up the drying process.
- the condensation of the air humidity on the inner wall of the washing container can be further supported if at least one wall of the washing container is in heat-conducting contact with an outer wall of the dishwasher.
- the wall of the washing compartment which is in heat-conducting contact with an outer wall of the dishwasher, has a lower temperature than the air in the washing compartment, is 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. This ensures good heat dissipation from the wall of the washing compartment to an outer wall of the dishwasher and the surroundings.
- a wall of the washing compartment which acts as a condensation surface
- it can also be in heat-conducting contact with a heat exchanger of the dishwasher.
- the heat exchanger absorbs the resulting condensation heat via the heat-conducting connection between the heat exchanger and the wall of the rinsing tank, which acts as a condensation surface, and keeps the wall of the rinsing tank cool, the water in the heat exchanger slowly heating up.
- this embodiment of the present invention also reduces the temperature fluctuations in the washing liquid, for example due to the supply of fresh water, thus reducing the risk of hairline cracks in ceramic dishes or earthenware vessels, for example.
- 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 suction opening and the Blow-out opening and a blower for conveying the air from the suction opening through the transport path to the blow-out opening, wherein a wall of the transport path acts at least partially as a condensation surface on which moisture contained in the air condenses.
- the drying device expediently has a discharge line through which at least the water deposited in the transport route is discharged.
- the water deposited in the transport path of the drying device can be conducted, for example, into the pump bowl of the dishwasher or can be conveyed out of the dishwasher via the drain pump.
- the condensation effect of the drying device is further increased if the suction opening of the drying device opens into the upper region of the washing container and the outlet opening of the drying device into the lower region of the washing container. Since the warm, moist air is in the upper region of the washing compartment, the arrangement of the suction opening in the upper region of the washing compartment ensures that the air is conveyed from the upper region of the washing compartment into the drying device, where the highest air humidity is present. Due to the arrangement of the blow-out opening in the lower region of the washing compartment, the circulation movement of the air described above is favored by the washing compartment and the drying device.
- the fan, the heating device and / or the heat exchanger are advantageously connected to the program control of the dishwasher in such a way that 200301904
- the operation of the blower, the heating device and / or the heat exchanger is regulated according to the washing program carried out.
- the air flow for drying the wash ware is introduced into the wash tank from the drying device via spray devices such as spray pipes in the lower region of the wash tank.
- Figure 1 is a schematic sectional view through a dishwasher in a first preferred embodiment according to the present invention
- Figure 2 is a sectional view through a drying device for a dishwasher in a second preferred embodiment according to the present invention.
- the embodiment of a dishwasher G according to the invention shown in FIG. 1 comprises a washing container 1 for holding items to be cleaned, which is surrounded by the housing 3 of the dishwasher G.
- a washing container 1 for holding 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 washware is subjected to washing liquid during the washing operation.
- the air in the rinsing container is circulated via a drying device (not shown), the air being sucked out of the rinsing container by means of a blower, warmed in the drying device and reintroduced into the rinsing container 1 as drying air via the spray device 4, 5.
- the drying air is introduced from the drying device into the washing container 1 only via the lower spray arm 4.
- the drying air emerging from the lower spray arm 4 in the lower region of the washing compartment 1 essentially rises in the middle of the washing compartment 1, thereby absorbing moisture from the items to be washed and then sinking down again on the sides of the washing compartment 1.
- This circulation of the drying air is used to increase the drying performance, in that at least one wall 2 of the rinsing container 1 acts as a condensation surface on which the moisture contained in the drying air condenses. This will during the drying process 200301904
- Rinsing container 1 reduces existing air humidity and speeds up the drying process.
- the wall 2 of the washing compartment 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 compartment 1 is constantly cooled by the outer wall 3 of the dishwasher G, and therefore has a lower temperature than the air in the washing compartment 1 and can thus act as a condensation surface.
- it can also be in heat-conducting contact with a heat exchanger (not shown) in the dishwasher G, the heat exchanger preferably being filled with cool water during the drying process.
- the heat exchanger is usually accommodated in the side wall of the dishwasher G, so that heat-conducting contact between the wall 2 of the washing compartment 1 and the heat exchanger is easy to produce.
- the heat exchanger By filling the heat exchanger during the drying process with cool fresh water from the domestic water line, it then has a cooling potential, which it releases via the heat-conducting connection between the heat exchanger and the wall 2 of the washing container 1, which acts as a condensation surface, the water in the heat exchanger slowly heating up ,
- FIG. 2 shows a sectional illustration 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 a blowing 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 between the suction opening 10 and the blowing opening 9 to convey the air from the suction opening through a transport path 11 to the blow-out opening 9. On its flow path through the transport path 11, the air passes through an electrical heating device 8, whereby the air is heated and thus receives a higher capacity for absorbing moisture.
- a wall of the transport path 11 acts at least partially as a condensation surface on which moisture contained in the air condenses.
- the drying device also has a drain 12 through which the water deposited in the transport path 11 is drained. This will dry 200301904
- Both the blower 7 and the heating device 8 are connected to the program control (not shown) of the dishwasher G in such a way that the operation of the blower and the heating device is regulated in accordance with the washing program carried out.
- the blower 7 connected to a control unit (not shown) is activated and sucks in moist air from the washing compartment 1 through the suction opening 10.
- the moisture can at least partially precipitate and be discharged from the drying device via the discharge line 12.
- the air is heated by the heating device 7 and is therefore 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, is reintroduced into the washing compartment 1 and can circulate there for drying the damp items in the manner described above.
- both a homogeneous heat distribution within the drying air and a uniform flow through the washing container 1 are achieved in the dishwasher G according to the present invention , which results in higher efficiency and thus better energy utilization for the operation of the dishwasher G.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
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 (de) | 2003-12-22 | 2004-12-13 | Geschirrspülmaschine mit trocknungseinrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1701649A1 true EP1701649A1 (de) | 2006-09-20 |
| EP1701649B1 EP1701649B1 (de) | 2015-03-04 |
Family
ID=34712333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04804786.4A Expired - Lifetime EP1701649B1 (de) | 2003-12-22 | 2004-12-13 | Geschirrspülmaschine mit trocknungseinrichtung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1701649B1 (de) |
| WO (1) | WO2005060821A1 (de) |
Families Citing this family (3)
| 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 (de) * | 2009-03-23 | 2010-09-29 | Bonferraro S.p.A. | Waschmaschine mit einem verbesserten Trocknungssystem und entsprechendes Waschprogramm |
| 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)
| 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 |
| DE10022088A1 (de) | 1999-05-26 | 2001-01-04 | Miele & Cie | Programmgesteuerte Geschirrspülmaschine mit einer Einrichtung zum Trocknen von Geschirr |
-
2004
- 2004-12-13 EP EP04804786.4A patent/EP1701649B1/de not_active Expired - Lifetime
- 2004-12-13 WO PCT/EP2004/053423 patent/WO2005060821A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005060821A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1701649B1 (de) | 2015-03-04 |
| WO2005060821A1 (de) | 2005-07-07 |
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