EP2637548A1 - Geschirrspülmaschine mit einer entfeuchtungseinheit - Google Patents

Geschirrspülmaschine mit einer entfeuchtungseinheit

Info

Publication number
EP2637548A1
EP2637548A1 EP11781506.8A EP11781506A EP2637548A1 EP 2637548 A1 EP2637548 A1 EP 2637548A1 EP 11781506 A EP11781506 A EP 11781506A EP 2637548 A1 EP2637548 A1 EP 2637548A1
Authority
EP
European Patent Office
Prior art keywords
receptacle
tub
air
dishwasher
inner receptacle
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
Application number
EP11781506.8A
Other languages
English (en)
French (fr)
Other versions
EP2637548B1 (de
Inventor
Yusuf Koc
Murat Kantas
Levent Akdag
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.)
Arcelik AS
Original Assignee
Arcelik AS
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
Application filed by Arcelik AS filed Critical Arcelik AS
Priority to PL11781506T priority Critical patent/PL2637548T3/pl
Publication of EP2637548A1 publication Critical patent/EP2637548A1/de
Application granted granted Critical
Publication of EP2637548B1 publication Critical patent/EP2637548B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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

Definitions

  • the present invention relates to a dishwasher comprising a dehumidifying unit that provides the dehumidification process to be performed effectively.
  • the drying step of dishwasher washing programs it is aimed to remove the water remaining on the dishes and also to prevent the moisture in the tub from leaving stains on the dishes getting cold by condensing.
  • the last rinsing step is performed with hot water in order to remove the water remaining on the dishes in an easier way in the drying step. And this means a greater amount of energy to be consumed during heating the water.
  • humid air in the tub is delivered to the exterior environment by means of a fan.
  • an additional air channel that delivers the humid air received from the tub to tub again by condensing it thereon is disposed near this line.
  • moisture in the tub cannot be completely discharged and causes stains on the dishes by condensing.
  • dehumidifying units comprising reversible type moisture adsorbent materials are used.
  • Adsorbent materials can adsorb moisture up to the saturation point and at that moment emits heat to its surroundings.
  • zeolite is used as moisture adsorbent in dishwashers. The humid air received from the tub by means of the fan is sent to the zeolite-comprising receptacle and after heating up and leaving its moisture, it is again directed into the tub.
  • an effective drying process is realized by vaporizing the water on the dishes without requiring the hot rinsing step.
  • Zeolite that fills its moisture adsorption capacity during that time is regenerated at the next washing step by being heated up to high temperatures by means of a heater placed therein or thereabout and can be used again.
  • the aim of the present invention is the realization of a dishwasher comprising a dehumidifying unit having desiccant material that can be regenerated homogeneously and the particles of which are not damaged during its regeneration.
  • an air channel located outside the tub extending between the tub inlet and the tub outlet and a dehumidifying unit located on the air channel are provided.
  • the dehumidifying unit comprises an inner receptacle, at least one inlet port providing the air delivered from the tub by means of the fan to be received into the inner receptacle, a heater wrapped around the inner receptacle, an outer receptacle surrounding the inner receptacle such that a gap remains therebetween, an outlet port providing the air received into the inner receptacle through the inlet port to be transferred to the outer receptacle, at least one desiccant material placed between the outer receptacle and the inner receptacle and a connection pipe disposed on the outer receptacle, providing the air passing from the inner receptacle to the outer receptacle to be returned to the tub.
  • the inner receptacle starts from one end of the outer receptacle and extends almost up to the other end thereof.
  • the inner receptacle is in form of a pipe with two ends open. One end of the pipe is used as the inlet port, and the other end as outlet port. The air coming from the air channel enters into the inner receptacle from the inlet port at one end of the pipe and passes to the outer receptacle through the outlet port at the other end thereof.
  • the inner receptacle appears like the extension of the air channel, since the cross-sectional diameter of the air channel is equal to the cross-sectional diameter of the pipe-shaped inner receptacle.
  • the outer receptacle surface that the air leaving the inner receptacle hits is curved and concave so as to convert the flow direction of the air opposite to the incident flow direction.
  • the air entering into the inner receptacle through the inlet port passes to the outer receptacle through the outlet port and changes direction by hitting the outer receptacle wall.
  • the outer receptacle has an oval cross-section.
  • the air entering into the inner receptacle through the inlet port reverses its direction as opposite to its incident direction by hitting the curved wall after passing to the outer receptacle through the outlet port and passes to the air channel through the connection pipe.
  • the heater is in wire form, helically wrapped around the outer surface of the inner receptacle.
  • the inlet port and the connection pipe are disposed almost at the same side of the dehumidifying unit.
  • the air entering through the inlet port returns to the tub by exiting from the connection pipe that is at the same side with the inlet port.
  • an air-permeable sieve that prevents the desiccant material from entering into the inner receptacle from the outer receptacle and that completely closes the outlet port is disposed in the dehumidifying unit.
  • the dehumidifying unit comprises an additional heater disposed in the space between the outer receptacle and the inner receptacle. Preferably, all the surfaces of the additional heater contact the desiccant material. This heater is activated during the regeneration process and increases the temperature of the desiccant material.
  • the present invention since a homogeneous heat distribution is provided in the dehumidifying unit, almost all of the desiccant material particles are provided to be regenerated. Thus, total dehumidification capacity in the next drying step increases and hence a more efficient drying is provided. Moreover, the regeneration process time is reduced by means of the additional heater used. Furthermore, the desiccant material particles are prevented from burning and losing their desiccation feature during the regeneration of the desiccant material and in long term, the dehumidifying efficiency of the dishwasher is prevented from decreasing.
  • Figure 1 – is the schematic view of the dishwasher of the present invention.
  • Figure 2 – is the schematic view of the dehumidifying unit.
  • Figure 3 – is the schematic view of the dehumidifying unit in an embodiment of the present invention.
  • the dishwasher (1) comprises an outer cabinet (2), a tub (3) wherein the washing process is performed, disposed into the outer cabinet (2) such that a gap remains therebetween, a tub inlet (4) providing the air to enter into the tub (3), a tub outlet (5) providing the air in the tub (3) to be discharged, an air channel (6) extending outside the tub (3), between the tub inlet (4) and the tub outlet (5), a fan (7) disposed on the air channel (6) and providing the air in the tub (3) to be sucked and a dehumidifying unit (8) disposed on the air channel (6), desiccating the air passing therethrough (Figure 1).
  • the dehumidifying unit (8) comprises an inner receptacle (9) connected to the air channel (6), at least one inlet port (10) providing the air delivered from the tub (3) by means of the fan (7) to be received into the inner receptacle (9), a heater (11) wrapped around the inner receptacle (9), an outer receptacle (12) surrounding the inner receptacle (9) such that a gap remains therebetween, an outlet port (13) providing the air received into the inner receptacle (9) through the inlet port (10) to pass to the outer receptacle (12) after traversing the inner receptacle (9), a desiccant material (14) disposed in the volume between the outer receptacle (12) and the inner receptacle (9) and a connection pipe (15) disposed on the outer receptacle (12), providing the air passing from the inner receptacle (9) to the outer receptacle (12) to be sent back to the tub (3) ( Figure 2, Figure 3).
  • the humid air received from the inside of the tub (3) is directed to the dehumidifying unit (8) by means of the fan (7).
  • the humid air After moving through the air channel (6) for a while, the humid air is received into the inner receptacle (9) by passing through the inlet port (10).
  • the air propelled by the fan (7) reaches the outlet port (13).
  • the air Just after passing to the outer receptacle (12) from the inner receptacle (9) by means of the outlet port (13), the air changes direction by hitting the outer receptacle (12) side wall and continues its movement in the outer receptacle (12) in the direction opposite to its incident direction.
  • the air dehumidified and heated during its movement in the outer receptacle (12) containing the desiccant material (14) therein leaves the dehumidifying unit (8) by exiting from the connection pipe (15) and returns to the tub (3) through the tub inlet (4) ( Figure 2).
  • the desiccant material (14) retaining the moisture of the air passing thereover during the drying step and thus saturated with moisture is required to be regenerated by being heated in order to be used again.
  • the regeneration process is realized between the cold washing and the hot washing steps of the next washing program.
  • the heater (11) is activated.
  • the heater (11) provides the desiccant material (14) located therearound to be regenerated by transferring heat to it by conduction.
  • air is received from the tub (3) by activating the fan (7) and directed to the outer receptacle (12) by being passed through the inner receptacle (9).
  • the air, the temperature of which increases by passing through the inner receptacle (9) heated by the heater (11) is directed to the outer receptacle (12) by leaving the inner receptacle (9).
  • the desiccant material (14) particles, that do not contact the heater (11), complete their regeneration by transferring heat from this air by means of convection.
  • heat emitted from the heater (11) reaches almost all of the desiccant material (14) particles and hence regeneration is provided to be completed homogeneously. Consequently, the heater (11) is operated for a shorter period of time and energy saving is provided.
  • the desiccant material (14) particles contacting the heater (11) are subjected to heat for a shorter period of time, desiccant material (14) particles are prevented from structure degeneration by overheating and becoming non desiccant.
  • the inner receptacle (9), in the outer receptacle (12), starts from one end of the outer receptacle (12) and extends almost up to the other end thereof. In this embodiment almost the entire inner receptacle (9) is in the outer receptacle (12).
  • the inner receptacle (9) is in form of a pipe with two ends open.
  • one end of the pipe is used as the inlet port (10), and the other end as the outlet port (13).
  • the air coming from the air channel (6) enters into the inner receptacle (9) through the inlet port (10) at one end of the pipe-shaped inner receptacle (9) and passes to the outer receptacle (12) through the outlet port (13) at the other end thereof.
  • the outer receptacle (12) surface that the air leaving the inner receptacle (9) hits is curved and concave so as to convert the flow direction of the air opposite to the incident flow direction.
  • the air entering into the inner receptacle (9) through the inlet port (10) passes to the outer receptacle (12) through the outlet port (13) and changes direction by hitting the outer receptacle (12) wall.
  • the curved wall of the outer receptacle (12) By means of the curved wall of the outer receptacle (12), the hitting-and-returning movement of the air molecules is more easily realized.
  • the process air is provided to be efficiently dehumidified.
  • the cross-section of the outer receptacle (12) is in oval form.
  • the air entering into the inner receptacle (9) through the inlet port (10) reverses its direction as opposite to its incident direction by hitting the curved wall and passes to the air channel (6) through the connection pipe (15).
  • the heater (11) is in wire form, helically wrapped around the outer surface of the inner receptacle (9). In this embodiment, since the heater (11) extends along the inner receptacle (9), it effectively heats the interior of the inner receptacle (9) and provides the temperature of the air passing therethrough to reach higher values.
  • the inlet port (10) and the connection pipe (15) are disposed almost at the same side of the dehumidifying unit (8).
  • the air entering through the inlet port (10) after traversing the dehumidifying unit (8) twice in opposite directions through the interior and the exterior of the inner receptacle (9), exits from the connection pipe (15) that is at the same side as the inlet port (10) and enters into the tub (3).
  • the dehumidifying unit (8) comprises an air-permeable sieve (16) that prevents the desiccant material (14) from entering into the inner receptacle (9) from the outer receptacle (12) and that closes the outlet port (13).
  • the desiccant materials (14) disposed in the outer receptacle (12) are prevented from going into the inner receptacle (9) or the air channel (6). Consequently, total dehumidification capacity is prevented from decreasing by maintaining the amount of desiccant material (14).
  • the dehumidifying unit (8) comprises an additional heater (17) disposed in the volume between the outer receptacle (12) and the inner receptacle (9).
  • the additional heater (17) provides the regeneration process to be realized more quickly and homogeneously by being activated during regeneration ( Figure 3).
  • the desiccant material (14) has reversible feature.
  • zeolite is used as the desiccant material (14).
  • the dehumidifying unit (8) since a homogeneous heat distribution is provided in the dehumidifying unit (8), almost all of the desiccant material (14) particles are provided to be regenerated. Thus, total dehumidification capacity in the next drying step increases and hence a more efficient drying is provided. Furthermore, the desiccant material (14) particles are prevented from burning and losing their desiccation feature during the regeneration of the desiccant material (14) and thus, in long term, the dehumidifying efficiency of the dishwasher (1) is prevented from decreasing.

Landscapes

  • Drying Of Gases (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP20110781506 2010-11-12 2011-11-04 Geschirrspülmaschine mit einer entfeuchtungseinheit Active EP2637548B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11781506T PL2637548T3 (pl) 2010-11-12 2011-11-04 Zmywarka do naczyń zawierająca jednostkę usuwającą wilgoć

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201009483 2010-11-12
PCT/EP2011/069455 WO2012062663A1 (en) 2010-11-12 2011-11-04 A dishwasher comprising a dehumidifying unit

Publications (2)

Publication Number Publication Date
EP2637548A1 true EP2637548A1 (de) 2013-09-18
EP2637548B1 EP2637548B1 (de) 2015-04-29

Family

ID=44925532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110781506 Active EP2637548B1 (de) 2010-11-12 2011-11-04 Geschirrspülmaschine mit einer entfeuchtungseinheit

Country Status (5)

Country Link
EP (1) EP2637548B1 (de)
CN (1) CN103200855B (de)
PL (1) PL2637548T3 (de)
WO (1) WO2012062663A1 (de)
ZA (1) ZA201303405B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102034096B1 (ko) * 2013-09-02 2019-10-18 삼성전자주식회사 식기세척기
US9167951B2 (en) 2014-01-31 2015-10-27 General Electric Company Dishwasher appliance having energy recovery features
WO2016127373A1 (zh) * 2015-02-12 2016-08-18 佛山市顺德区美的洗涤电器制造有限公司 洗碗机
EP3376932B1 (de) * 2015-11-16 2019-08-14 Electrolux Appliances Aktiebolag Geschirrspülmaschine und verfahren zur entfernung einer waschflüssigkeit von einem korb einer geschirrspülmaschine
US9854957B2 (en) 2016-01-20 2018-01-02 Haier Us Appliance Solutions, Inc. Methods for operating dishwasher appliances having energy recovery features

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830664A1 (de) * 1988-09-09 1990-03-22 Bauknecht Hausgeraete Einrichtung zum trocknen von geschirr in einer haushalt-geschirrspuelmaschine
JP2006020753A (ja) * 2004-07-07 2006-01-26 Matsushita Electric Ind Co Ltd 食器洗い乾燥機
CN200951070Y (zh) * 2004-12-09 2007-09-26 Bsh博施及西门子家用器具有限公司 洗碗机
DE102005004096A1 (de) 2004-12-09 2006-06-14 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer Sorptionstrockenvorrichtung
FR2879431B1 (fr) 2004-12-21 2008-12-05 Brandt Ind Sas Lave-vaisselle et procede de mise en oeuvre du sechage de la vaisselle dans ce lave-vaisselle
DE102007052083A1 (de) * 2007-10-31 2009-05-07 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit Adsorptionstrocknungsgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012062663A1 *

Also Published As

Publication number Publication date
ZA201303405B (en) 2014-01-29
PL2637548T3 (pl) 2015-10-30
CN103200855A (zh) 2013-07-10
WO2012062663A1 (en) 2012-05-18
EP2637548B1 (de) 2015-04-29
CN103200855B (zh) 2015-07-29

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