EP2637546B1 - Lave-vaisselle comprenant un dispositif de séchage - Google Patents

Lave-vaisselle comprenant un dispositif de séchage Download PDF

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Publication number
EP2637546B1
EP2637546B1 EP11778643.4A EP11778643A EP2637546B1 EP 2637546 B1 EP2637546 B1 EP 2637546B1 EP 11778643 A EP11778643 A EP 11778643A EP 2637546 B1 EP2637546 B1 EP 2637546B1
Authority
EP
European Patent Office
Prior art keywords
chamber
heater
dishwasher
tub
desiccant material
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
EP11778643.4A
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German (de)
English (en)
Other versions
EP2637546A1 (fr
Inventor
Yusuf Koc
Murat Kantas
Levent Akdag
Orhan Celik
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
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Publication of EP2637546A1 publication Critical patent/EP2637546A1/fr
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Publication of EP2637546B1 publication Critical patent/EP2637546B1/fr
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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
    • A47L15/481—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 drying process to be performed effectively.
  • drying elements comprising reversible type moisture adsorbent materials are used.
  • Adsorbent materials can adsorb moisture upto the saturation point and at that moment emits heat to its surroundings.
  • zeolite is used as moisture adsorbent in dishwashers. Humid air received from the tub by means of the fan is sent to the zeolite-comprising chamber and after heating up and leaving its moisture, it is again directed into the tub.
  • Humid air received from the tub by means of the fan is sent to the zeolite-comprising chamber 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 realization of the hot rinsing step.
  • zeolite that fills its moisture adsorption capacity 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.
  • zeolite regeneration is realized at very high temperatures, a heater outside the chamber cannot provide an effective regeneration.
  • the heater is disposed inside the chamber, since zeolite particles directly contacting the heater are subject to high amount of heat, they burn and lose their desiccation feature after some time. In this case, the dishwasher cannot perform an effective drying in the course of time and the user thinks that the machine is broken down. And this causes customer dissatisfaction and increase in maintenance and repair rate.
  • a dishwasher comprising a zeolite chamber positioned around a pipe-type water heater.
  • waste heat occurring around the heater is used during the water heating process for zeolite regeneration.
  • a dishwasher comprising a chamber having desiccant material therein between the outer cabinet and the tub.
  • at least one heater is disposed between the desiccant materials arranged as plates so as to make thermal contact with the particles.
  • a dishwasher according to the preamble of claim 1 is disclosed.
  • 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.
  • the dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises an air channel that is disposed outside the tub and that provides the creation of a closed air cycle between the tub outlet and the tub inlet, a dehumidifying unit that is disposed on the air channel, having a chamber, more than one desiccant material placed into the chamber and a heater immersed into the desiccant material and at least partially extending into the chamber, and a vibration generator providing the desiccant material to be stirred by vibrating the heater.
  • the vibration generator provides the heater to vibrate and thus the desiccant material particles to shift by being activated a little before the regeneration temperature.
  • the desiccant material particles contacting the heater are prevented from losing their desiccation feature and almost all of the desiccant material particles are provided to be regenerated by providing a homogeneous heat distribution in the chamber.
  • At least one hole is present on the dehumidifying unit, disposed on the chamber and providing a portion of the heater to be taken out of the chamber by being passed therethrough.
  • the heater is preferably U-shaped, with resistance and have circular cross-section. The ends of the heater are taken out of the chamber through the holes. The area of the hole is larger than the cross sectional area of the heater. When the leg of the heater is passed through the hole, a gap remains between the heater and the hole.
  • the vibration generator that is required to contact the heater interacts with the portion of the heater outside the chamber. Thus, a wider area is created for the placement of the vibration generator and also operating conditions are improved in terms of temperature.
  • At least one sealing element that prevents the desiccant material from getting out of the chamber by covering the gap between the hole and the heater is placed in the dehumidifying unit.
  • the sealing element allows the heater to make vibrational motion by means of its flexible structure.
  • the vibration generator comprises a piezoelectric actuator that provides the heater to vibrate by being mounted to the portion thereof remaining outside the chamber.
  • the vibration generator comprises a crankshaft-piston rod mechanism that provides the heater to vibrate by transferring its movement to the portion of the heater remaining outside the chamber.
  • the vibration generator comprises an unbalanced load mechanism that provides the heater to vibrate by being mounted to the portion thereof remaining outside the chamber.
  • the dishwasher comprises at least one temperature sensor disposed in the chamber and a control unit that actuates the vibration generator and/or changes the vibration frequency thereof according to the data received from the temperature sensor.
  • an empty space is left over the chamber.
  • the desiccant material particles are provided to shift more easily while the heater vibrates.
  • more particles shift in the chamber and a more homogeneous regeneration is realized.
  • the vibration generator is disposed in the chamber.
  • the desiccant material particles are prevented from burning and losing their desiccation feature during the regeneration of the desiccant material.
  • drying efficiency of the dishwasher is prevented from decreasing in long term.
  • a homogeneous heat distribution is provided in the chamber, almost all of the desiccant material particles are provided to be regenerated.
  • total dehumidification capacity in the next drying step increases and hence a more efficient drying is provided.
  • the dishwasher (1) comprises a tub (2) wherein the washing process is performed, a tub inlet (3) that provides air entrance into the tub (2), a tub outlet (4) providing the air in the tub (2) to be discharged, an air channel (5) located outside the tub (2), providing a closed air cycle between the tub outlet (4) and the tub inlet (3), a fan (6) disposed on the air channel (5) and providing the air in the tub (2) to be sucked and a dehumidifying unit (7) disposed on the air channel (5), providing the air passing therethrough to be dried ( Figure 1 ).
  • the dehumidifying unit (7) comprises a desiccant material (8) desiccating the air passing therethrough, a chamber (10) wherein the desiccant material (8) is disposed, at least one heater (9) used during the regeneration of the desiccant material (8), at least partially extending into the chamber (10) and embedded into the desiccant material (8), an inlet port (11) providing the air coming from the air channel (5) to enter the chamber (10) and an outlet port (12) providing the air in the chamber (10) to pass into the air channel (5) again ( Figure 2 ).
  • the desiccant material (8) saturated with moisture in the drying step is regenerated in the next washing step by being heated by means of the heater (9) and regains its desiccant feature.
  • the dishwasher (1) of the present invention comprises a vibration generator (13) providing the desiccant material (8) wherein the heater (9) is embedded to be stirred by vibrating the heater (9).
  • the vibration generator (13) is activated during the regeneration process.
  • the heater (9) is vibrated by means of the vibration generator (13) and the desiccant material (8) particles in the chamber (10) shift by the effect of the vibrations.
  • the desiccant material (8) particles far from the heater (9) come closer and those that are near move away. Consequently, the desiccant material (8) particles close to the heater (9) are prevented from losing their desiccation feature by being continuously subjected to high temperatures and almost all of the desiccant material (8) particles in the chamber (10) are provided to be regenerated by those that are far coming closer. Thus, total dehumidification capacity and hence drying performance are preserved.
  • the dehumidifying unit (7) comprises at least one hole (14) disposed on the chamber (10) and providing a portion of the heater (9) to be taken out of the chamber (10) by being passed therethrough.
  • the ends of the heater (9) in form of a curved pipe, containing resistance wire are taken out of the chamber (10) through the hole (14).
  • the area of the hole (14) is larger than the cross sectional area of the heater (9).
  • the heater (9) has preferably circular cross-section. Thus, the heater (9) that vibrates when the vibration generator (13) is activated is provided to more easily move inside the hole (14).
  • the dehumidifying unit (7) comprises at least one sealing element (15) that prevents the desiccant material (8) from getting out of the chamber (10) by covering the gap between the hole (14) and the heater (9).
  • the sealing element (15) is preferably in ring form.
  • the sealing element (15) prevents the desiccant material (8) particles displacing inside the chamber (10) from leaving the chamber (10).
  • the sealing element (15) by means of its flexible structure, prevents the movement of the heater (9) from being limited during the vibrational motion ( Figure 3 ).
  • the vibration generator (13) comprises a piezoelectric actuator (18) that provides the heater (9) to vibrate by being mounted to the portion thereof remaining outside the chamber (10).
  • the piezoelectric actuator (18) provides the heater (9) whereon it is mounted to vibrate ( Figure 4 ).
  • the vibration generator (13) comprises a crankshaft-piston rod mechanism (19) that provides the heater (9) to vibrate by transferring its movement to the portion of the heater (9) remaining outside the chamber (10).
  • a motor making circular motion transfers its motion to the disc located just thereabove by means of a shaft.
  • the piston rod By means of the piston rod, one end of which is connected to the disc and the other end to the heater (9), the circular motion of the motor is converted to planar motion and the heater (9) is provided to vibrate ( Figure 5 ).
  • the vibration generator (13) comprises an unbalanced load mechanism (20) that provides the heater (9) to vibrate by being mounted to the portion thereof remaining outside the chamber (10) ( Figure 6 ).
  • the dishwasher (1) comprises at least one temperature sensor (16) disposed in the chamber (10) and a control unit (17) that actuates the vibration generator (13) and/or changes the vibration frequency thereof according to the data received from the temperature sensor (16).
  • the temperature sensor (16) is preferably disposed in the vicinity of the heater (9).
  • the control unit (17) provides the desiccant material (8) particles to shift by activating the vibration generator (13) when the desiccant material (8) particles near the heater (9) reach the regeneration temperature and prevents the desiccant material (8) contacting the heater (9) from burning.
  • the vibration generator (13) is provided to operate only when needed instead of the whole regeneration process and energy consumption is reduced.
  • the control unit (17) furthermore, regulates the vibration frequency by changing the power fed to the vibration generator (13) according to the temperature information received from the temperature sensor (16).
  • a portion of the chamber (10) is left empty in order to facilitate the movement of the desiccant material (8) particles.
  • the desiccant material (8) particles can shift more easily and a more homogeneous regeneration process is realized.
  • the vibration generator (13) is disposed in the chamber (10).
  • the desiccant material (8) has reversible feature.
  • zeolite is used as the desiccant material (8).
  • the desiccant material (8) particles are prevented from burning and losing their desiccation feature during the regeneration of the desiccant material (8).
  • drying efficiency of the dishwasher (1) is prevented from decreasing in long term.
  • a homogeneous heat distribution is provided in the chamber (10)
  • almost all of the desiccant material (8) particles are provided to be regenerated.
  • total dehumidification capacity in the next drying step increases and hence a more efficient drying is provided.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Drying Of Solid Materials (AREA)

Claims (9)

  1. Un lave-vaisselle (1) comprenant une cuve (2) dans laquelle le processus de lavage est effectué, une entrée de cuve (3) qui fournit une entrée d'air dans la cuve (2), une sortie de la cuve (4) permettant à l'air dans la cuve (2) de décharger (2), un canal d'air situé à l'extérieur de la cuve (2), permettant un cycle d'air fermé entre la sortie de la cuve (4) et l'entrée de la cuve (3), un ventilateur (6)disposé sur le canal d'air (5) et permettant à l'air dans la cuve d'être aspire et une unité de déshumidification (7) disposée sur le canal d'air (5), ayant un matériau dessicant (8) desséchant l'air traversant, une chambre (10) dans laquelle le matériau dessicant (8) est disposé, au moins un dispositif de chauffage (9) utilisé pendant la régénération du matériau dessicant (8), s'étendant au moins partiellement dans la chambre (10) et incorporé dans le matériau dessicant (8), un port d'entrée (11) fournissant l'air provenant du canal d'air (5) pour pénétrer dans la chambre (10) et un port de sortie (12) fournissant l'air dans la chambre (10) pour passer dans le canal d'air (5) encore, caractérisé par un générateur de vibration (13) fournissant le matériau dessicant (8) à agiter en faisant vibrer le réchauffeur (9).
  2. Un lave-vaisselle (1) selon la revendication 1, caractérisé en ce que l'unité de déshumidification (7) comprend au moins un trou (14) disposé sur la chambre (10) et permettant à une partie du dispositif de chauffage (9) de sortir de la chambre (10) en étant passé à travers celui-ci.
  3. Un lave-vaisselle (1) selon la revendication 2, caractérisé par le trou (14), dont la surface est supérieure à la surface en coupe transversale du dispositif de chauffage (9).
  4. Un lave-vaisselle (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de déshumidification (7) comprend au moins un élément d'étanchéité (15) qui empêche le matériau dessicant (8) de sortir de la chambre (10) en recouvrant l'espace entre le trou (14) et le dispositif de chauffage(9).
  5. Un lave-vaisselle (1) selon l'une quelconque des revendications précédentes, caractérisé par le générateur de vibration (13) comprenant un actionneur piézo électrique (18) qui permet au dispositive de chauffage (9) de vibrer en étant monté sur sa partie restant à l'extérieur de la chambre (10).
  6. Un lave-vaisselle (1) selon l'une quelconque des revendications 1 à 4, caractérisé par le générateur de vibration (13) comprenant un mécanisme de vilebrequin-piston (19) qui permet au dispositif de chauffage (9) de faire vibrer en transférant son mouvement vers la partie du dispositif de chauffage (9) restant à l'extérieur de la chambre (10).
  7. Un lave-vaisselle (1) selon l'une quelconque des revendications 1 à 4, caractérisé par le générateur de vibration (13) comprenant un mécanisme de charge déséquilibré (20) qui permet au dispositif de chauffage (9) de vibrer en étant monté sur sa partie restant à l'extérieur de la chambre (10).
  8. Un lave-vaisselle (1) selon l'une quelconque des revendications précédentes, caractérisé par au moins un capteur de température (16) disposé dans la chambre (10) et une unité de commande (17) qui actionne le générateur de vibration (13) et/ou change la fréquence de vibration selon les données reçues du capteur de température (16).
  9. Un lave-vaisselle (1) selon l'une quelconque des revendications précédentes, caractérisé par la chambre (10), don tune partie est laissée vide afin de faciliter le déplacement des particules de matériau dessicant (8).
EP11778643.4A 2010-11-12 2011-11-04 Lave-vaisselle comprenant un dispositif de séchage Active EP2637546B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201009479 2010-11-12
PCT/EP2011/069458 WO2012062666A1 (fr) 2010-11-12 2011-11-04 Lave-vaisselle comprenant une unité de déshumidification

Publications (2)

Publication Number Publication Date
EP2637546A1 EP2637546A1 (fr) 2013-09-18
EP2637546B1 true EP2637546B1 (fr) 2017-07-19

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EP11778643.4A Active EP2637546B1 (fr) 2010-11-12 2011-11-04 Lave-vaisselle comprenant un dispositif de séchage

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WO (1) WO2012062666A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2654547A2 (fr) * 2010-12-24 2013-10-30 Arçelik Anonim Sirketi Lave-vaisselle comprenant une unité de déshumidification
KR102188109B1 (ko) * 2014-05-30 2020-12-07 삼성전자주식회사 식기세척기
CN104939784A (zh) * 2015-07-21 2015-09-30 佛山市顺德区美的洗涤电器制造有限公司 一种洗碗机及其干燥辅助方法和装置

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
DE102005004096A1 (de) 2004-12-09 2006-06-14 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer Sorptionstrockenvorrichtung
DE102005004091A1 (de) * 2004-12-09 2006-06-22 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit Ozonspeicher
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
FR2879429B1 (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
WO2010012713A1 (fr) * 2008-07-28 2010-02-04 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle comprenant un dispositif de séchage par sorption dont la matière de sorption a une masse adapté à la quantité de mouillage dans le réservoir de lavage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
WO2012062666A1 (fr) 2012-05-18
EP2637546A1 (fr) 2013-09-18

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