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

Definitions

• the invention relates to a dishwasher with a rinsing container and devices for rinsing crockery by means of rinsing liquor.
• a dishwasher is known to have a rinsing process whose profile generally consists of at least one partial program step "pre-rinsing", one "cleaning”, at least one partial program step “intermediate rinsing ", a sub-program step” rinse "and a Generalpro” drying "consists.
• the heating of the rinsing liquid is usually carried out by means of electrical heaters in the dishwasher and / or by supplying hot water from the house installation.
• the items to be washed can be dried by self-heat drying if the rinsing liquid is heated in the partial program step "rinsing" and thus the hot, rinsed items are automatically dried by the material-dependent heat content of the items to be rinsed during the partial drying Due to the relatively high temperature of the rinsing liquid in the subprogram step "rinsing" of usually from 55 ° C to 75 ° C., the rinsing liquid is heated to a specific temperature by means of a separate heating in the subprogram step "rinsing" ° C ensures that a sufficiently large amount of heat is transferred to the items to be washed, so that the residual water adhering to the items to be washed evaporates due to the heat stored in the items to be washed.
• a separate heat source eg a hot air blower
• a drawback with the prior art heating systems described above is that the heating of the rinsing liquid is associated with a relatively high energy requirement and the required heat energy must be regenerated for each heating phase by means of the electrical heating elements.
• the known heating systems have the disadvantage that the heating of the rinsing liquid in the program step "rinsing" and the operations in sectionpro'Trocknen "are themselves associated with high energy requirements and the required heat energy is lost after the drying process, because they escape into the environment.
• Dishwashers are known in the art where the moist air is discharged to the outside. This is disadvantageous because the surrounding kitchen furniture is damaged and the process requires a possibly unhygienic air intake into the dishwasher from the outside.
• dishwashers are known in which, before discharging the moist air is passed through condensation surfaces on which the moisture condenses. This condensation water is directed either into the rinsing container or into special collection containers.
• DE 30 21 746 A1 discloses a method for operating a dishwasher, in which a heat exchanger connected to the washing container during a partial program step "drying" is fed with cold fresh water Since the temperature difference between the moist air and the filled fresh water is relatively low and the amount of fresh water is constantly heated, there is the disadvantage that the condensation of the moist air takes a long time and the condensation power is steadily lower and the duration of the partial program step "drying" is long, with moderate drying result.
• the object of the present invention is therefore to provide a dishwasher, with which it is possible to effectively and efficiently dry the items located in the washing container from an economic point of view and thus to keep the energy expenditure as low as possible despite very good drying performance the dishwasher according to the invention with the features of claim 1 solved.
• Advantageous developments of the present invention are characterized in the subclaims.
• the dishwasher according to the invention with a rinsing container and devices for rinsing dishes by means of rinsing liquor has a container with a vaporizable and / or sublimable medium and a sorber with reversibly dehydratable material, wherein between container and Sorber a gas exchange is possible and the sorber is used on the one hand indirectly for drying the dishes and on the other hand, the heat energy used for desorption of the sorber for heating the rinsing in the rinse tank and / or the dishes is at least partially used.
• the container and the sorber are preferably closably connected to each other with a valve via an exchange line for gas exchange.
• valve can advantageously be selectively interrupted the connection between the container and sorber to control the recording of the medium through the sorber.
• a fan air through an outlet from the Rinsing container in lines and back into the washing container through an inlet conductive.
• the sorber in the flow direction of the air to the lines first the container and then the sorber is arranged to allow a heat exchange between the flowing air in the lines and the medium in the container and the reversibly dehydratable material in the sorber.
• an electric heating element is arranged for the desorption of the reversibly dehydratable material in the sorber.
• the electrical heating element advantageously enables the targeted desorption of the reversibly dehydratable material contained in the sorber by heating.
• the medium for.
• the medium for.
• the medium vapor via the exchange line to the sorber and the medium vapor from the reversible dehydratable material in the sorber on ehmbar, whereby the sorber can be heated with reversible dehydratable material.
• the container is advantageously cooled and the sorber is heated so that on the one hand air can be cooled by cooling and on the other hand air can be heated, so that the moisture absorption capacity of the air increases.
• the sorber can be heated when the electric heating element is desorbed and with the valve open, the medium bound in the sorber vaporizable, the medium vapor released in the sorber via the exchange line to the container and the condensable medium vapor in the container, whereby the container with medium due to the evaporation heat can be heated.
• the medium absorbed in the sorber can thus advantageously be returned to the container in the sense of a closed circuit.
• the air on the container can be cooled and thereby the moisture contained in the air is at least partially condensable and the sorber the air is heated to increase the moisture absorption capacity of the air.
• the air circulated in the circulation of the washing container is thus advantageously dehumidified on the one hand and on the other hand heated, so that dry and warm air can be introduced into the washing container for drying the dishes.
• rinsing liquid to be heated eg. As "cleaning” or “pre-rinsing”, air from the washing through the lines and back into the washing container conductive, the air is preferably heated on the container and can be heated at the sorber. This makes it possible in a particularly advantageous manner to use the warning used for desorption. meenergy for heating the rinse liquor and / or the dishes.
• the resulting water on the container in the line by condensation from the air flowing through the line water in the washing or in a separate container can be conducted.
• the resulting condensation can be easily derived.
• FIG. 1 shows a schematic cross section through a dishwasher according to the invention.
• the dishwasher 1 has a closed air circuit, which leads through the lines 6, 7 and 9 and the washing compartment 2 with crockery baskets 3, 4.
• the washing compartment 2 In the washing compartment 2 is located in dish racks 3, 4, the dishes. The dishes in the baskets 3, 4 is not shown.
• In the upper region of the washing container 2 is an outlet 5 from the washing container 2, in which the air flows into the conduit 6, see arrow A.
• the line 7 is arranged with the blower 13, which promotes the air in the line 7 in the flow direction according to arrow B.
• a container 12 which is filled with water 16 or ice.
• a heat exchange between the air in the conduit 6 and the water 16 or ice in the container 12 is possible.
• the conduit 9 is arranged by the ' sorber 10, in which reversibly dehydratable material 11, z. As zeolite, is located.
• the sorber 10 there is an electric heating element 17, which heats the reversibly dehydratable material 11 for desorption if necessary.
• the sorber 10 and the container 12 are connected to each other via an exchange line 15, wherein in the exchange line 15, a valve 14 is arranged to interrupt the connection between the container 12 and the sorber 10 can.
• a dishwasher is known to have a rinsing process on the pro form generally consisting of at least one partial program step "pre-rinsing", one part “cleaning”, at least one subprogram step “intermediate rinsing", one subprogram step “rinsing” and one partial drying.
• a subprogram step “drying” With the help of the blower 13 air from the washing container 2 via the inlet 5 through the lines 6, 7 and 9 and back through the inlet 8 into the washing 2.
• drying is in the washing 2 wet, to be dried Dishes with moist air.
• the valve 14 in the exchange line 15 is preferably opened.
• the reversibly dehydrogenatable material 11 contained in the sorber 10 has a relatively large capacity for moisture.
• the reversibly dehydratable material 11 takes in a large amount of water contained in the container 12 in a short time 16 on and remaining in the container 12 remainder of water is strongly cooled by evaporative cold, z. B. until it freezes.
• the water 16 or ice in the container 12 evaporates or sublimates and the water vapor passes through the exchange line 15 to the sorber 10. In the sorber 10, the water vapor is absorbed by the reversibly dehydratable material 11.
• the reversibly dehydratable material 11 and therefore the sorber 10 are heated. Cooling of the container 12 produces a very large temperature difference between the moist air and the condensation surface which arises on the inside of the line 6.
• the guided from the washing tank 2 moist air condenses.
• the resulting free condensation water must be dissipated, z. B. in the washing compartment 2 or in a separate reservoir (not shown).
• the air cooled and dehumidified on the container 12 is passed on to the sorber 10 via the line 7.
• the sorber 10 has a greatly elevated temperature, for. B. 90 °, due to the condensation occurring on.
• the valve 14 is preferably opened during the "drying" partial program step, so that the cooling of the container 12, the heating of the sorber 10 and the circulation of air through the lines 6, 7 and 9 take place simultaneously the circulation of the air, the valve 14 are opened, so that already at the beginning of the circulation of air for drying the container 12 is cooled accordingly and the sorber 10 is heated and thus the full drying performance is available from the beginning during the recirculation of the air to be at least partially closed, because no additional cooling or heating is required due to the heat and cold storage capacity of the container 12 and the sorber 10.
• the valve 14 normally remains closed because unnecessary heating or cooling of the container 12 o the Sorbers 10
• the reversibly dehydratable material 11 in the sorber 10 must be heated to very high temperatures for desorption, which is accomplished with the electric heating element 17.
• the stored liquid emerges as hot steam, which passes via the exchange line 15 with the valve 14 open to the container 12, which acts as a condenser, because the hot water vapor condenses in the container 12. Due to the heat of condensation of the container 12 and the water 16 is heated.
• the sorber 10 is heated by the electric heating element to high temperatures, eg. B. 150 ° - 200 °, heated.
• the heat energy used for desorption is at least partially heated to heat the rinsing liquor and / or the dishes in a partial program step with rinsing liquor to be heated or already warmed rinsing liquor, for.
• cleaning or "pre-wash” used.
• the blower 13 is preferably turned on during the desorption of the sorber 10 and the air circulated from the washing container 2 through the lines 6, 7 and 9 according to the arrows A, B and C. In this case, the air heats up on the container 12 and in particular on the sorber 10.
• the fan 13 is turned on only when.
• the air is bypassed via a bypass line (not shown) around the container 12 until the temperature in the container 12 is higher than in the washing container. 2
• the heating of the air in the container 12 and in particular in the sorber 10 is largely sufficient to adequately heat the rinsing liquor and / or the dishes.
• a further heating can largely be dispensed with and the energy used for desorption can almost completely be used for heating the rinsing liquor and / or the dishes except for the low energy required to overcome the binding forces between water and reversibly dehydratable material. This can largely be dispensed with another heater.
• the energy savings and efficient cleaning of the dishes guaranteed.
• this also ware with low heat content, eg. Plastic parts are effectively dried because no heating is required in the partial program step preceding the partial program step "drying."
• the rapid drying also allows greatly reduced germ growth or even complete suppression of germ growth, which is beneficial to sanitary conditions
• the present invention provides a dishwasher with which it is possible, from an economic point of view, to efficiently clean and dry the items to be washed in the washing container and to minimize the energy expenditure associated therewith.

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34638355

Family Applications (1)

Country Status (7)

Families Citing this family (29)

Family Cites Families (8)

• 2003
  • 2003-12-04 DE DE10356785A patent/DE10356785A1/de not_active Ceased
• 2004
  • 2004-12-02 WO PCT/EP2004/053239 patent/WO2005053503A1/fr active Application Filing
  • 2004-12-02 EP EP04804659A patent/EP1696783B1/fr active Active
  • 2004-12-02 ES ES04804659T patent/ES2370493T3/es active Active
  • 2004-12-02 PL PL04804659T patent/PL1696783T3/pl unknown
  • 2004-12-02 AT AT04804659T patent/ATE526861T1/de active
  • 2004-12-02 US US10/581,652 patent/US20070157954A1/en not_active Abandoned

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events