EP2637546A1 - Lave-vaisselle comprenant une unité de déshumidification - Google Patents
Lave-vaisselle comprenant une unité de déshumidificationInfo
- Publication number
- EP2637546A1 EP2637546A1 EP11778643.4A EP11778643A EP2637546A1 EP 2637546 A1 EP2637546 A1 EP 2637546A1 EP 11778643 A EP11778643 A EP 11778643A EP 2637546 A1 EP2637546 A1 EP 2637546A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- tub
- heater
- dishwasher
- air
- 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
- 239000000463 material Substances 0.000 claims abstract description 50
- 239000002274 desiccant Substances 0.000 claims abstract description 49
- 239000002245 particle Substances 0.000 claims abstract description 23
- 230000008929 regeneration Effects 0.000 claims abstract description 17
- 238000011069 regeneration method Methods 0.000 claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 7
- 229910021536 Zeolite Inorganic materials 0.000 description 6
- 239000010457 zeolite Substances 0.000 description 6
- 239000003463 adsorbent Substances 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002918 waste heat 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
- A47L15/481—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.
- 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.
- 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 front view of the chamber in an embodiment of the present invention.
- Figure 4 – is the perspective view of the dehumidifying unit in another embodiment of the present invention.
- Figure 5 — is the perspective view of the dehumidifying unit in another embodiment of the present invention.
- Figure 6 — is the perspective view of the dehumidifying unit in another embodiment of the present invention.
- 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)
Abstract
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 true EP2637546A1 (fr) | 2013-09-18 |
EP2637546B1 EP2637546B1 (fr) | 2017-07-19 |
Family
ID=44906164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11778643.4A Active EP2637546B1 (fr) | 2010-11-12 | 2011-11-04 | Lave-vaisselle comprenant un dispositif de séchage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2637546B1 (fr) |
WO (1) | WO2012062666A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012084488A2 (fr) * | 2010-12-24 | 2012-06-28 | Arcelik 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)
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 |
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 |
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 |
US20110126866A1 (en) * | 2008-07-28 | 2011-06-02 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher machine comprising a sorption drying device provided with a sorption material adapted in terms of weight to the wetting quantity in the washing compartment |
-
2011
- 2011-11-04 WO PCT/EP2011/069458 patent/WO2012062666A1/fr active Application Filing
- 2011-11-04 EP EP11778643.4A patent/EP2637546B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012062666A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012062666A1 (fr) | 2012-05-18 |
EP2637546B1 (fr) | 2017-07-19 |
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