WO2013050541A1 - A dishwasher comprising a dehumidifying unit - Google Patents

A dishwasher comprising a dehumidifying unit Download PDF

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Publication number
WO2013050541A1
WO2013050541A1 PCT/EP2012/069739 EP2012069739W WO2013050541A1 WO 2013050541 A1 WO2013050541 A1 WO 2013050541A1 EP 2012069739 W EP2012069739 W EP 2012069739W WO 2013050541 A1 WO2013050541 A1 WO 2013050541A1
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WIPO (PCT)
Prior art keywords
inner chamber
air
dishwasher
tub
chamber
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Application number
PCT/EP2012/069739
Other languages
French (fr)
Inventor
Yusuf Koc
Original Assignee
Arcelik Anonim Sirketi
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Filing date
Publication date
Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to EP12769654.0A priority Critical patent/EP2763579A1/en
Publication of WO2013050541A1 publication Critical patent/WO2013050541A1/en

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    • 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 the drying effectiveness of which is increased.
  • dehumidifying elements comprising reversible type moisture adsorbent materials are used.
  • the amount of adsorbent material that the humid air contacts as it enters into the dehumidifying unit affects the desiccation effectiveness.
  • the surface area of the region where the humid air enters the desiccant material is proportional with the desiccation effectiveness.
  • the humid air enters the dehumidifying unit through one surface, and for this reason the desiccation performance of the adsorbent materials disposed at the surface where the air enters differs from the desiccation performance of the adsorbent materials disposed at the surface where the air exits.
  • a dishwasher comprising a receptacle that has an inlet through which the cycle air leaving the washing tub enters and an outlet providing the cycle air passing therethrough to enter into the washing tub again.
  • German Patent Document No. DE102008043581 a dishwasher is described, comprising a dehumidifying unit wherein the humid air leaving the washing tub enters through a grill-shaped surface.
  • the aim of the present invention is the realization of a dishwasher comprising a dehumidifying unit the desiccation performance of which is improved.
  • a dehumidifying unit comprising at least one desiccant material that dehumidifies the air passing therethrough, at least one heater that is used for the regeneration of the desiccant material, at least one inlet port that provides the entry of air therein, at least one outlet port that provides the air passing therethrough to exit and at least one outer chamber having at least one side wall that extends between the surfaces whereon the outlet port and the inlet port are located, and at least one fan providing the air to be sucked and to be delivered to the dehumidifying unit are disposed.
  • the dishwasher of the present invention comprises at least one inner chamber that is located in the outer chamber, that bears against the outlet port where the air leaves the outer chamber, that provides the entry of air into the desiccant material and that extends from the outlet port towards the inlet port so as not to almost completely contact at least one of the side walls.
  • the air leaving the tub reaches the outer chamber, passing through the air duct.
  • the air dissipating in the outer chamber dissipates in the gap between the outer chamber and the inner chamber. Due to the inner chamber closing the front of the outlet port, it is not possible for the humid air to leave the outer chamber without passing through the inner chamber.
  • the humid air enters the desiccant material by means of the surfaces of the inner chamber that are spaced apart from the outer chamber.
  • the humid air homogeneously enters the desiccant material through more than one surface.
  • the desiccation effectiveness of the desiccant material is increased.
  • the inner chamber bears against the outer chamber with only one of its surfaces.
  • the surface of the inner chamber bearing against the outer chamber is adjacent to the wall of the outer chamber.
  • the inner chamber contacts the outer chamber only at the surface of the outer chamber whereon the outlet port is located.
  • the inner chamber is in pyramidal form.
  • the outer chamber comprises at least two surfaces that are spaced apart from the inner chamber.
  • the humid air enters the desiccant material through at least two surfaces.
  • the inner chamber is in prismatic form.
  • the inner chamber comprises a surface that is not spaced apart from the surface of the outer chamber whereon the outlet port is located.
  • the humid air is provided to leave the dehumidifying unit by passing through the desiccant material.
  • the inner chamber comprises at least one surface that extends from the outlet port to the inlet port, in the same direction as the side wall and that does not contact the outer chamber.
  • the inner chamber is in cylindrical form.
  • the inner chamber is in frustoconical form.
  • the inner chamber is in truncated-spherical form.
  • the inner chamber is in cage form produced from metal material.
  • the cage-shaped inner chamber stands in a rigid manner in the outer chamber.
  • the desiccant material has reversible feature.
  • zeolite is used as the desiccant material.
  • a dishwasher is realized, of which the dehumidification effectiveness is improved, having an inner chamber wherein the humid air enters into the desiccant material disposed therein through a wide surface area.
  • Figure 1 – is the schematic view of the dishwasher of the present invention.
  • Figure 2 – is the schematic view of the dehumidifying unit.
  • the dishwasher (1) comprises
  • the dehumidification step is started by operating the fan (13) on the air duct (4).
  • the air sucked by the fan (13) passes into the air duct (4) by means of the outlet (5).
  • the humid air received into the air duct (4) is sent to the dehumidifying unit (12) by means of the fan (13).
  • the humid air leaves its moisture in the desiccant material (6) disposed in the dehumidifying unit (12) and exits the dehumidifying unit (12) and returns to the tub (3).
  • the desiccant material (6) emanates heat due to its thermophysical feature as it retains moisture and transfers this heat to the air passing therethrough.
  • the dehumidifying unit (12) As the air passing through the dehumidifying unit (12) heats up, the internal temperature of the tub (3) increases and thus the water accumulated on the dishes are provided to be evaporated.
  • the vapor forming passes over the desiccant material (6) in the dehumidifying unit (12) in the closed cycle and is received into the tub (3). After awhile, the humid air forming as a result of the water on the dishes and the vaporization of the water are discharged from the tub (3).
  • the desiccant material (6) reaching its saturation point by retaining the moisture of the process air in the dehumidification step is of reversible feature, it is regenerated and regains its desiccant characteristic. This process is realized between the cold washing and the hot washing steps of the next washing program.
  • the desiccant material (6) is provided to be regenerated by operating the heater (8) in the outer chamber (11).
  • the dishwasher (1) of the present invention comprises the dehumidifying unit (12) having at least one inner chamber (7) with permeable surfaces, that is disposed in the outer chamber (11), that covers the outlet port (10), that extends from the outlet port (10) towards the inlet port (9) so that a gap (B) remains between itself and at least one of the side walls (14), and wherein the desiccant material (6) is placed.
  • the humid air entering the outer chamber (11) first dissipates in the gap (B) between the inner chamber (7) and the outer chamber (11). With the gap (B) between the inner chamber (7) and the outer chamber (11) being filled by the humid air, the air enters the desiccant material (6) through the surfaces of the inner chamber (7) that allows the entry of air.
  • the humid air leaves its moisture as it moves in the desiccant material (6) and exits the dehumidifying unit (12) by means of the outlet port (10) and returns to the tub (3).
  • the humid air is prevented from leaving the dehumidifying unit (12) without entering the inner chamber (7) by means of the surface of the inner chamber (7) covering the outlet port (10).
  • the humid air enters the desiccant material (6) at a wide surface area by means of the surfaces of the inner chamber (7) that do not contact the outer chamber (11).
  • the gap (B) between the inner chamber (7) and the outer chamber (11) the heat generated by the desiccant material (6) during desiccation and regeneration is prevented from directly affecting the outer chamber (11).
  • components close to the outer chamber (11) are prevented from being damaged.
  • the inner chamber (7) contacts the outer chamber (11) from only one of its surfaces.
  • the humid air entering the dehumidifying unit (12) by means of the inlet port (9) dissipates in the gap (B) between the inner chamber (7) and the outer chamber (11) and enters the desiccant material (6) through the surfaces of the inner chamber (7) that do not contact the outer chamber (11).
  • the humid air enters the desiccant material (6) at a wide surface area by means of the surfaces (16) of the inner chamber (7) that do not contact the outer chamber (11).
  • the inner chamber (7) is in pyramidal form.
  • the base of the inner chamber (7) in pyramidal form almost completely bears against the surface of the outer chamber (11) whereon the outlet port (10) is located.
  • the outer chamber (11) comprises at least two surfaces that do not contact the inner chamber (7).
  • the humid air entering the outer chamber (11) by means of the inlet port (9) dissipates in the gap (B) between the inner chamber (7) and the surfaces of the outer chamber (11) that do not contact the inner chamber (7).
  • the gap (B) between the inner chamber (7) and the outer chamber (11) being filled by the humid air, the humid air enters the desiccant material (6) through the surfaces of the inner chamber (7) that allows the entry of air ( Figure 2).
  • the inner chamber (7) is in prismatic form.
  • the humid air is provided to homogeneously enter the desiccant material (6) through at least two surfaces.
  • the base of the inner chamber (7) in prismatic form almost completely bears against the surface of the outer chamber (11) whereon the outlet port (10) is located.
  • the inner chamber (7) comprises a surface that completely bears against the wall of the outer chamber (11) whereon the outlet port (10) is located.
  • the humid air entering the outer chamber (11) by means of the inlet port (9) is prevented from leaving the dehumidifying unit (12) without entering the inner chamber (7) after filling up the gap (B) between the inner chamber (7) and the outer chamber (11).
  • the humid air filling up the gap (B) between the inner chamber (7) and the outer chamber (11) enters the desiccant material (6) through the surfaces of the inner chamber (7) that allow the entry of air and leaves the dehumidifying unit (12) after leaving its moisture.
  • the inner chamber (7) comprises at least one surface that is almost parallel to the side wall (14) and that does not contact with the side wall (14).
  • the inner chamber (7) is in cylindrical form.
  • the inner chamber (7) is in frustoconical form.
  • the inner chamber (7) is in truncated-spherical form.
  • the base of the inner chamber (7) in truncated-spherical form almost completely bears against the surface of the outer chamber (11) whereon the outlet port (10) is located.
  • the inner chamber (7) is in cage form produced from metal material.
  • the inner chamber (7) produced from metal material is fixed to the outer chamber (11) by means of its surface covering the outlet port (10).
  • the inner chamber (7) is provided to stand in a rigid manner in the outer chamber (11).
  • the heater (8) is placed perpendicular to the air flow, in the inner chamber (7) at a region close to the area where the air enters the inner chamber (7).
  • the fan (13) is operated at the same time with the heater (8). While heat transfer to regions close to the heater (8) is realized by conduction and heat transfer to regions away from the heater (8) is realized by means of the fan (13) blowing the air coming from tub (3) into the dehumidifying unit (12).
  • a homogeneous heat distribution is provided in the inner chamber (7).
  • the homogeneous heat distribution almost the entire desiccant material (6) in the inner chamber (7) is regenerated and the desiccation capacity thereof is provided to be higher in the next dehumidification step.
  • a dishwasher (1) is realized, having a dehumidifying unit (12) wherein the surface where the air enters the desiccant material (6) is increased.
  • the desiccation effectiveness is improved with the humid air homogeneously entering the desiccant material (6) through more than one surface.
  • This provides an increase in the dehumidification performance.
  • the gap (B) between the inner chamber (7) and the outer chamber (11) the heat generated by the desiccant material (6) during desiccation and regeneration is prevented from directly affecting the outer chamber (11).
  • components close to the outer chamber (11) are prevented from being damaged.

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Abstract

The present invention relates to a dishwasher (1) comprising an outer cabinet (2), a tub wherein the washing process is performed, disposed into the outer cabinet (2) such that a gap remains therebetween, an air duct (4) both ends of which are connected to the tub (3), an outlet (5) enabling air transfer from the inside of the tub (3) into the air duct (4), a dehumidifying unit (12) comprising at least one desiccant material (6) that dehumidifies the air passing therethrough, at least one heater (8) that is used for the regeneration of the desiccant material (6), at least one inlet port (9) that provides the entry of air therein, at least one outlet port (10) that provides the air passing therethrough to exit and at least one outer chamber (11) having at least one side wall (14) that extends between the surfaces whereon the outlet port (10) and the inlet port (9) are located, and at least one fan (13) that is disposed on the air duct (4) and that sucks and delivers the humid air in the tub (3) towards the dehumidifying unit (12).

Description

A DISHWASHER COMPRISING A DEHUMIDIFYING UNIT
The present invention relates to a dishwasher the drying effectiveness of which is increased.
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 dehumidification step. This requires a great amount of energy to be consumed for heating the water. In order to eliminate the said problem, dehumidifying elements comprising reversible type moisture adsorbent materials are used. The amount of adsorbent material that the humid air contacts as it enters into the dehumidifying unit affects the desiccation effectiveness. The surface area of the region where the humid air enters the desiccant material is proportional with the desiccation effectiveness. In the state of the art, the humid air enters the dehumidifying unit through one surface, and for this reason the desiccation performance of the adsorbent materials disposed at the surface where the air enters differs from the desiccation performance of the adsorbent materials disposed at the surface where the air exits.
In the state of the art International Patent Application No. WO2011039262, a dishwasher is described, comprising a receptacle that has an inlet through which the cycle air leaving the washing tub enters and an outlet providing the cycle air passing therethrough to enter into the washing tub again.
In the state of the art German Patent Document No. DE102008043581, a dishwasher is described, comprising a dehumidifying unit wherein the humid air leaving the washing tub enters through a grill-shaped surface.
The aim of the present invention is the realization of a dishwasher comprising a dehumidifying unit the desiccation performance of which is improved.
In the dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, a dehumidifying unit comprising at least one desiccant material that dehumidifies the air passing therethrough, at least one heater that is used for the regeneration of the desiccant material, at least one inlet port that provides the entry of air therein, at least one outlet port that provides the air passing therethrough to exit and at least one outer chamber having at least one side wall that extends between the surfaces whereon the outlet port and the inlet port are located, and at least one fan providing the air to be sucked and to be delivered to the dehumidifying unit are disposed.
The dishwasher of the present invention comprises at least one inner chamber that is located in the outer chamber, that bears against the outlet port where the air leaves the outer chamber, that provides the entry of air into the desiccant material and that extends from the outlet port towards the inlet port so as not to almost completely contact at least one of the side walls. The air leaving the tub reaches the outer chamber, passing through the air duct. The air dissipating in the outer chamber dissipates in the gap between the outer chamber and the inner chamber. Due to the inner chamber closing the front of the outlet port, it is not possible for the humid air to leave the outer chamber without passing through the inner chamber. With the gap between the outer chamber and the inner chamber being filled up, the humid air enters the desiccant material by means of the surfaces of the inner chamber that are spaced apart from the outer chamber. The humid air homogeneously enters the desiccant material through more than one surface. Thus, the desiccation effectiveness of the desiccant material is increased.
In another embodiment of the present invention, the inner chamber bears against the outer chamber with only one of its surfaces. The surface of the inner chamber bearing against the outer chamber is adjacent to the wall of the outer chamber. The inner chamber contacts the outer chamber only at the surface of the outer chamber whereon the outlet port is located.
In a derivative of this embodiment, the inner chamber is in pyramidal form.
In an embodiment of the present invention, the outer chamber comprises at least two surfaces that are spaced apart from the inner chamber. Thus, the humid air enters the desiccant material through at least two surfaces.
In a derivative of this embodiment, the inner chamber is in prismatic form.
In an embodiment of the present invention, the inner chamber comprises a surface that is not spaced apart from the surface of the outer chamber whereon the outlet port is located. Thus, the humid air is provided to leave the dehumidifying unit by passing through the desiccant material.
In an embodiment of the present invention, the inner chamber comprises at least one surface that extends from the outlet port to the inlet port, in the same direction as the side wall and that does not contact the outer chamber.
In a derivative of this embodiment, the inner chamber is in cylindrical form.
In an embodiment of the present invention, the inner chamber is in frustoconical form.
In a derivative of this embodiment, the inner chamber is in truncated-spherical form.
In another embodiment of the present invention, the inner chamber is in cage form produced from metal material. The cage-shaped inner chamber stands in a rigid manner in the outer chamber.
The desiccant material has reversible feature. Preferably zeolite is used as the desiccant material.
By means of the present invention, a dishwasher is realized, of which the dehumidification effectiveness is improved, having an inner chamber wherein the humid air enters into the desiccant material disposed therein through a wide surface area.
A dishwasher realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
Figure 1 – is the schematic view of the dishwasher of the present invention.
Figure 2 – is the schematic view of the dehumidifying unit.
The elements illustrated in the figures are numbered as follows:
  1. Dishwasher
  2. Outer cabinet
  3. Tub
  4. Air duct
  5. Outlet
  6. Desiccant material
  7. Inner chamber
  8. Heater
  9. Inlet port
  10. Outlet port
  11. Outer chamber
  12. Dehumidifying unit
  13. Fan
  14. Side wall
  15. Inlet
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,
  • an air duct (4) both ends of which are connected to the tub (3),
  • an outlet (5) enabling air transfer from the inside of the tub (3) into the air duct (4),
  • an inlet (15) providing the air to enter the tub (3)
  • a dehumidifying unit (12) comprising at least one desiccant material (6) that dehumidifies the air passing therethrough, at least one heater (8) that is used for the regeneration of the desiccant material (6), at least one inlet port (9) that provides the entry of air therein, at least one outlet port (10) that provides the air passing therethrough to exit and at least one outer chamber (11) having at least one side wall (14) that extends between the surfaces whereon the outlet port (10) and the inlet port (9) are located,
  • at least one fan (13) that is disposed on the air duct (4) and that sucks and delivers the humid air in the tub (3) towards the dehumidifying unit (12) (Figure 1).
In the washing program of the dishwasher (1), after the rinsing step is completed, the dehumidification step is started by operating the fan (13) on the air duct (4). In this step, the air sucked by the fan (13) passes into the air duct (4) by means of the outlet (5). The humid air received into the air duct (4) is sent to the dehumidifying unit (12) by means of the fan (13). The humid air leaves its moisture in the desiccant material (6) disposed in the dehumidifying unit (12) and exits the dehumidifying unit (12) and returns to the tub (3). The desiccant material (6) emanates heat due to its thermophysical feature as it retains moisture and transfers this heat to the air passing therethrough. As the air passing through the dehumidifying unit (12) heats up, the internal temperature of the tub (3) increases and thus the water accumulated on the dishes are provided to be evaporated. The vapor forming passes over the desiccant material (6) in the dehumidifying unit (12) in the closed cycle and is received into the tub (3). After awhile, the humid air forming as a result of the water on the dishes and the vaporization of the water are discharged from the tub (3).
Since the desiccant material (6) reaching its saturation point by retaining the moisture of the process air in the dehumidification step is of reversible feature, it is regenerated and regains its desiccant characteristic. This process is realized between the cold washing and the hot washing steps of the next washing program. The desiccant material (6) is provided to be regenerated by operating the heater (8) in the outer chamber (11).
The dishwasher (1) of the present invention comprises the dehumidifying unit (12) having at least one inner chamber (7) with permeable surfaces, that is disposed in the outer chamber (11), that covers the outlet port (10), that extends from the outlet port (10) towards the inlet port (9) so that a gap (B) remains between itself and at least one of the side walls (14), and wherein the desiccant material (6) is placed.
The humid air reaching the dehumidifying unit (12) by means of the air duct (4) and the fan (13) enters the outer chamber (11) through the inlet port (9). The humid air entering the outer chamber (11) first dissipates in the gap (B) between the inner chamber (7) and the outer chamber (11). With the gap (B) between the inner chamber (7) and the outer chamber (11) being filled by the humid air, the air enters the desiccant material (6) through the surfaces of the inner chamber (7) that allows the entry of air. The humid air leaves its moisture as it moves in the desiccant material (6) and exits the dehumidifying unit (12) by means of the outlet port (10) and returns to the tub (3). The humid air is prevented from leaving the dehumidifying unit (12) without entering the inner chamber (7) by means of the surface of the inner chamber (7) covering the outlet port (10). The humid air enters the desiccant material (6) at a wide surface area by means of the surfaces of the inner chamber (7) that do not contact the outer chamber (11).
Moreover, by means of the gap (B) between the inner chamber (7) and the outer chamber (11), the heat generated by the desiccant material (6) during desiccation and regeneration is prevented from directly affecting the outer chamber (11). Thus, components close to the outer chamber (11) are prevented from being damaged.
In an embodiment of the present invention, the inner chamber (7) contacts the outer chamber (11) from only one of its surfaces. There is a gap (B) between the inner chamber (7) and the surfaces of the outer chamber (11), excluding the surface whereon the outlet port (10) is located. The humid air entering the dehumidifying unit (12) by means of the inlet port (9) dissipates in the gap (B) between the inner chamber (7) and the outer chamber (11) and enters the desiccant material (6) through the surfaces of the inner chamber (7) that do not contact the outer chamber (11). The humid air enters the desiccant material (6) at a wide surface area by means of the surfaces (16) of the inner chamber (7) that do not contact the outer chamber (11). With the inner chamber (7) covering the outlet port (10), the humid air is prevented from leaving the dehumidifying unit (12) without entering the inner chamber (7) (Figure 2).
In a derivative of this embodiment, the inner chamber (7) is in pyramidal form. The base of the inner chamber (7) in pyramidal form almost completely bears against the surface of the outer chamber (11) whereon the outlet port (10) is located.
In an embodiment of the present invention, the outer chamber (11) comprises at least two surfaces that do not contact the inner chamber (7). The humid air entering the outer chamber (11) by means of the inlet port (9) dissipates in the gap (B) between the inner chamber (7) and the surfaces of the outer chamber (11) that do not contact the inner chamber (7). With the gap (B) between the inner chamber (7) and the outer chamber (11) being filled by the humid air, the humid air enters the desiccant material (6) through the surfaces of the inner chamber (7) that allows the entry of air (Figure 2).
In a derivative of this embodiment, the inner chamber (7) is in prismatic form. Thus, the humid air is provided to homogeneously enter the desiccant material (6) through at least two surfaces. The base of the inner chamber (7) in prismatic form almost completely bears against the surface of the outer chamber (11) whereon the outlet port (10) is located.
In an embodiment of the present invention, the inner chamber (7) comprises a surface that completely bears against the wall of the outer chamber (11) whereon the outlet port (10) is located. Thus, the humid air entering the outer chamber (11) by means of the inlet port (9) is prevented from leaving the dehumidifying unit (12) without entering the inner chamber (7) after filling up the gap (B) between the inner chamber (7) and the outer chamber (11). The humid air filling up the gap (B) between the inner chamber (7) and the outer chamber (11) enters the desiccant material (6) through the surfaces of the inner chamber (7) that allow the entry of air and leaves the dehumidifying unit (12) after leaving its moisture.
In an embodiment of the present invention, the inner chamber (7) comprises at least one surface that is almost parallel to the side wall (14) and that does not contact with the side wall (14).
In a derivative of this embodiment, the inner chamber (7) is in cylindrical form.
In an embodiment of the present invention, the inner chamber (7) is in frustoconical form.
In a derivative of this embodiment, the inner chamber (7) is in truncated-spherical form. The base of the inner chamber (7) in truncated-spherical form almost completely bears against the surface of the outer chamber (11) whereon the outlet port (10) is located.
In another embodiment of the present invention, the inner chamber (7) is in cage form produced from metal material. The inner chamber (7) produced from metal material is fixed to the outer chamber (11) by means of its surface covering the outlet port (10). Thus, the inner chamber (7) is provided to stand in a rigid manner in the outer chamber (11).
In another embodiment of the present invention, the heater (8) is placed perpendicular to the air flow, in the inner chamber (7) at a region close to the area where the air enters the inner chamber (7). In the regeneration process, the fan (13) is operated at the same time with the heater (8). While heat transfer to regions close to the heater (8) is realized by conduction and heat transfer to regions away from the heater (8) is realized by means of the fan (13) blowing the air coming from tub (3) into the dehumidifying unit (12). Thus, a homogeneous heat distribution is provided in the inner chamber (7). By means of the homogeneous heat distribution, almost the entire desiccant material (6) in the inner chamber (7) is regenerated and the desiccation capacity thereof is provided to be higher in the next dehumidification step.
By means of the present invention, a dishwasher (1) is realized, having a dehumidifying unit (12) wherein the surface where the air enters the desiccant material (6) is increased. Thus, the desiccation effectiveness is improved with the humid air homogeneously entering the desiccant material (6) through more than one surface. This provides an increase in the dehumidification performance. Moreover, by means of the gap (B) between the inner chamber (7) and the outer chamber (11), the heat generated by the desiccant material (6) during desiccation and regeneration is prevented from directly affecting the outer chamber (11). Thus, components close to the outer chamber (11) are prevented from being damaged.
It is to be understood that the present invention is not limited to the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims (12)

  1. A dishwasher (1) comprising
    - 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,
    - an air duct (4) both ends of which are connected to the tub (3),
    - an outlet (5) enabling air transfer from the inside of the tub (3) into the air duct (4),
    - an inlet (15) providing the air to enter the tub (3)
    - a dehumidifying unit (12) comprising at least one desiccant material (6) that dehumidifies the air passing therethrough, at least one heater (8) that is used for the regeneration of the desiccant material (6), at least one inlet port (9) that provides the entry of air therein, at least one outlet port (10) that provides the air passing therethrough to exit and at least one outer chamber (11) having at least one side wall (14) that extends between the surfaces whereon the outlet port (10) and the inlet port (9) are located,
    - at least one fan (13) that is disposed on the air channel (4) and that sucks and delivers the humid air in the tub (3) towards the dehumidifying unit (12)
    characterized by the dehumidifying unit (12) having at least one inner chamber (7)
    - wherein the desiccant material (6) is placed,
    - that is disposed in the outer chamber (11),
    - with permeable surfaces,
    - that covers the outlet port (10),
    - that extends from the outlet port (10) towards the inlet port (9) so that a gap (B) remains between itself and at least one of the side walls (14).
  2. A dishwasher (1) as in Claim 1, characterized by the inner chamber (7) with only one of its surfaces contacting the outer chamber (11).
  3. A dishwasher (1) as in Claim 1 or 2, characterized by the inner chamber (7) that is in pyramidal form.
  4. A dishwasher (1) as in any one of the claims 1 to 3, characterized by the outer chamber (11) having at least two surfaces that do not contact the inner chamber (7).
  5. A dishwasher (1) as in any one of the claims 1, 2 or 4, characterized by the inner chamber (7) in prismatic form.
  6. A dishwasher (1) as in any one of the claims above, characterized by the inner chamber (7) having a surface that completely bears against the wall of the outer chamber (11) whereon the outlet port (10) is located.
  7. A dishwasher (1) as in any one of the above claims, characterized by the inner chamber (7) having at least one surface that is almost parallel to the side wall (14) and that does not contact with the side wall (14).
  8. A dishwasher (1) as in any one of the claims 1, 2, 4, 6 or 7, characterized by the inner chamber (7) in cylindrical form.
  9. A dishwasher (1) as in any one of the claims 1, 2, 4 or 6, characterized by the inner chamber (7) in frustoconical form.
  10. A dishwasher (1) as in any one of the claims 1, 2, 4 or 6, characterized by the inner chamber (7) in truncated-spherical form.
  11. A dishwasher (1) as in any one of the above Claims, characterized by the inner chamber (7) in cage form, that is produced from metal material.
  12. A dishwasher (1) as in any one of the above claims, characterized by the heater (8) placed perpendicular to the air flow, in the inner chamber (7) at a region near the surfaces where the air enters the inner chamber (7).
PCT/EP2012/069739 2011-10-05 2012-10-05 A dishwasher comprising a dehumidifying unit WO2013050541A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12769654.0A EP2763579A1 (en) 2011-10-05 2012-10-05 A dishwasher comprising a dehumidifying unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRA2011/09881 2011-10-05
TR201109881 2011-10-05

Publications (1)

Publication Number Publication Date
WO2013050541A1 true WO2013050541A1 (en) 2013-04-11

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PCT/EP2012/069739 WO2013050541A1 (en) 2011-10-05 2012-10-05 A dishwasher comprising a dehumidifying unit

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Country Link
EP (1) EP2763579A1 (en)
WO (1) WO2013050541A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008043581A1 (en) 2008-11-07 2010-05-12 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher i.e. domestic dishwasher, has control device comprising washing program to control proper operation of dishwasher, and pushbuttons connected to control device for modifying washing program
EP2305876A1 (en) * 2009-10-02 2011-04-06 ZEO-TECH Zeolith Technologie GmbH Sorption dryer with zeolite
WO2011039262A1 (en) 2009-10-01 2011-04-07 Arcelik Anonim Sirketi A dishwasher with increased drying effectiveness
US20110120511A1 (en) * 2008-07-28 2011-05-26 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwasher machine comprising a sorption drying device in a sub-module
US20110120512A1 (en) * 2008-07-28 2011-05-26 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with sorption dryer device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110120511A1 (en) * 2008-07-28 2011-05-26 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwasher machine comprising a sorption drying device in a sub-module
US20110120512A1 (en) * 2008-07-28 2011-05-26 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with sorption dryer device
DE102008043581A1 (en) 2008-11-07 2010-05-12 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher i.e. domestic dishwasher, has control device comprising washing program to control proper operation of dishwasher, and pushbuttons connected to control device for modifying washing program
WO2011039262A1 (en) 2009-10-01 2011-04-07 Arcelik Anonim Sirketi A dishwasher with increased drying effectiveness
EP2305876A1 (en) * 2009-10-02 2011-04-06 ZEO-TECH Zeolith Technologie GmbH Sorption dryer with zeolite

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