WO2007052209A1 - A dishwasher with water deflectors - Google Patents

A dishwasher with water deflectors Download PDF

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Publication number
WO2007052209A1
WO2007052209A1 PCT/IB2006/054010 IB2006054010W WO2007052209A1 WO 2007052209 A1 WO2007052209 A1 WO 2007052209A1 IB 2006054010 W IB2006054010 W IB 2006054010W WO 2007052209 A1 WO2007052209 A1 WO 2007052209A1
Authority
WO
WIPO (PCT)
Prior art keywords
ceiling
washing tank
dishwasher
water
washing
Prior art date
Application number
PCT/IB2006/054010
Other languages
French (fr)
Inventor
Ufuk Askin
Atilla Uz
Ertugrul Kose
Original Assignee
Arcelik Anonim Sirketi
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 Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2007052209A1 publication Critical patent/WO2007052209A1/en

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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
    • A47L15/4246—Details of the tub
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays

Definitions

  • the present invention relates to a dishwasher wherein an effective washing process is realized.
  • EP0766945 a structure providing for cleaning the ceiling of the dishwasher tank is described.
  • the ceiling surface of the dish- washing machine is of an undulated-corrugated reflecting member.
  • the water sprayed into the washing tank is directed towards the items emplaced in the washing tank.
  • the object of the present invention is the realization of a dishwasher wherein the accumulation of dirt on the washing tank ceiling is prevented and the return of the water that impinges on the ceiling into the washing cycle is accelerated.
  • the dishwasher realized in order to fulfill the objectives of the present invention, which is explicated in the first claim and the dependent claims, comprises a washing tank having a ceiling with a nearly flat surface to which the water is impinged on almost vertically, sprayed by the top rotor and a deflector that provides the water impinging on the surface but not leaving the ceiling surface due to the "Coanda effect", spreading on the ceiling surface and proceeding towards the side walls of the washing tank, to be delivered to the desired area and to clean a maximum area of the ceiling and a set that provides the water to detach from the ceiling when the desired region is reached, to let it freely fall in droplets over the items emplaced in the washing tank by nullifying the "Coanda effect".
  • the set has a structure that projects into the washing tank.
  • the set is disposed above the region wherein the glasses and cups are emplaced, preferably situated parallel to the side walls of the washing tank such that it forms a barrier in front of the water that proceeds towards the side walls.
  • the deflectors preferably extend up to a position that is over the portions above the basket, into which the glasses, cups etc. are emplaced.
  • the sets are situated which eliminates the "Coanda effect". Accordingly, the water impinging on the ceiling, runs up to the set and the water reaching the set, detaches from the ceiling as a result of the structure of the set and falls down on the items such as glasses, cups etc. Consequently, the glasses and cups that are positioned on a special rack above the basket are washed more effectively.
  • this protrusion is shaped like a channel that extends along the set. As a result of the protrusion extending along the set, the water that flows on the ceiling surface due to the 'Coanda effect" can be delivered into the washing tank before it reaches the side walls.
  • the top rotor the real function of which is cleaning of the washing tank ceiling, has been made to contribute effectively to the washing process of the items emplaced in the washing tank, especially the efficient washing of the glasses, cups etc. emplaced on a special rack situated over the top basket.
  • the water that does not detach from the ceiling surface and flows down the side walls to be discharged before participating in the washing process due to the 'Coanda effect can be delivered into the washing chamber by nullifying the 'Coanda effect".
  • Figure 1 - is the front perspective view of an empty dishwasher.
  • Figure 2 - is the front perspective view of a filled in dishwasher.
  • Figure 3 - is the sectional view of the dishwasher.
  • the dishwasher (1) of the present invention comprises a washing tank (2) having a ceiling (3) and more than one side wall (4), at least one basket (5) that is situated in the washing tank (2) providing the orderly arrangement of the items in the washing tank (2), at least one spray arm (8) that provides the spraying of washing water over the items emplaced in the basket (5) for washing them and a top rotor (6) mounted on the ceiling (3) providing to spray the water particularly towards the ceiling (3) to wash the ceiling (3).
  • the dishwasher (1) comprises one or more deflectors (7) situated on the ceiling (3) providing to deliver the water sprayed towards the ceiling (3) to a predetermined region on the ceiling (3) before it detaches from the ceiling (3) due to the "Coanda effect' ' and one or more sets (9) providing the water delivered to the desired region by the deflector (7) to detach from the ceiling (3) surface before it reaches the side walls (4) of the washing tank (2) and to fall into the washing tank (2) in droplets ( Figure 1 and Figure 2).
  • the top rotor (6) comprises an inlet orifice through which water is delivered and spraying holes for discharging the water with a certain pressure.
  • the top rotor (6) is preferably mounted in the center in order to evenly spray the water to all the regions of the ceiling (3).
  • the set (9) is preferably situated above the rack (A) situated over the basket (5) on which items such as the glasses, cups etc. are emplaced.
  • the deflector (7) extends along the ceiling (3) from the top rotor (6) towards the set (9).
  • the water not leaving the ceiling due to the "Coanda effect" detaches from the ceiling (3) as a result of gravitational force due to the structure of the set (9) situated at the portion where the deflector (7) ends, extending into the washing tank (2), and flows towards the inside of the washing tank (2) and falls in droplets being directed particularly over the glasses, cups etc.. Accordingly, the water sprayed towards the ceiling (3) by the top rotor (6) that is not quite effective in washing the items emplaced in the washing tank (2) can be efficiently utilized in washing especially the glasses and the cups and provides the effective performance of the washing process (Figure 3).
  • the dishwasher (1) comprises a flat impact surface (S) on the ceiling (3) with the top rotor (6) being in its center, facing opposite the spraying holes of the top rotor (6) with which the water exiting the top rotor (6) meets first, having an area encompassing the traversing area of the top rotor (6).
  • the set (9) is positioned on the ceiling ((3) such that it is parallel to the side walls (4).
  • the set (9) comprises a protrusion
  • a channel is provided on the protrusion (10) that extends along the set (9).
  • the set (9) is situated on the sides where the ceiling (3) joins with the side walls (4) of the washing tank (2).
  • the water used in washing the ceiling (3) has been enabled to take part in the washing process.
  • the water that does not detach from the ceiling (3) surface due to the "Coanda effect” and drains from the side walls (4), to be discharged without participating in the washing process, is transferred into the washing tank (2) by means of the sets (9) formed on the ceiling (3) surface by eliminating the "Coanda effect” before reaching the side walls (4).

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

The present invention relates to a dishwasher (1) comprising a washing tank (2) having a ceiling (3) and more than one side wall (4), at least one basket (5) that is situated in the washing tank (2) providing the orderly arrangement of the items in the washing tank (2), at least one spray arm (8) that provides the spraying of washing water over the items emplaced in the basket (5) for washing them and a top rotor 6) mounted on the ceiling (3) providing to spray the water particularly towards the ceiling (3) to wash the ceiling (3) and one or more deflectors (7) situated on the ceiling (3) providing to deliver the water sprayed towards the ceiling (3) to wash the ceiling (3).

Description

Description
A DISHWASHER WITH WATER DEFLECTORS
[1] The present invention relates to a dishwasher wherein an effective washing process is realized.
[2] In dishwashers, the water sprayed out of the spray arm results in the removal of the dirt from the items to be carried up to the ceiling of the washing tank and clinging there. In order to remove this dirt from the ceiling, an extra rotor that sprays water directly to the ceiling is required in addition to the existing spray arms.
[3] In state-of-the-art European Patent Applications no. EP0524102 and no.
EP0766945, a structure providing for cleaning the ceiling of the dishwasher tank is described.
[4] In state-of-the-art Great Britain Patent Application no. GB473198, the ceiling surface of the dish- washing machine is of an undulated-corrugated reflecting member. By means of this reflecting surface, the water sprayed into the washing tank is directed towards the items emplaced in the washing tank.
[5] In state-of-the-art Great Britain Patent Application no GB552580, the description is given for spherical concave depressions on the walls of the washing container of the dish washing machine that provide to divert or deflect impinging jets of liquid.
[6] Some of the water leaving the top rotor mounted on the ceiling returns back to the washing chamber after impinging on the ceiling. Some of it clings on the ceiling surface and moves towards the side walls of the washing chamber due to a fact known as "Coanda effect" which is explained as fluids attaching to a surface and moving along that surface. The water attaching to the ceiling surface and moving towards the side walls, drains from the side walls and cannot participate in the washing cycle.
[7] In the prevalent applications, a considerable amount of the water leaving the top rotor cannot participate in the washing cycle due to this effect.
[8] The object of the present invention is the realization of a dishwasher wherein the accumulation of dirt on the washing tank ceiling is prevented and the return of the water that impinges on the ceiling into the washing cycle is accelerated.
[9] The dishwasher, realized in order to fulfill the objectives of the present invention, which is explicated in the first claim and the dependent claims, comprises a washing tank having a ceiling with a nearly flat surface to which the water is impinged on almost vertically, sprayed by the top rotor and a deflector that provides the water impinging on the surface but not leaving the ceiling surface due to the "Coanda effect", spreading on the ceiling surface and proceeding towards the side walls of the washing tank, to be delivered to the desired area and to clean a maximum area of the ceiling and a set that provides the water to detach from the ceiling when the desired region is reached, to let it freely fall in droplets over the items emplaced in the washing tank by nullifying the "Coanda effect".
[10] The set has a structure that projects into the washing tank. The set is disposed above the region wherein the glasses and cups are emplaced, preferably situated parallel to the side walls of the washing tank such that it forms a barrier in front of the water that proceeds towards the side walls.
[11] The deflectors preferably extend up to a position that is over the portions above the basket, into which the glasses, cups etc. are emplaced. At the end of the deflectors, the sets are situated which eliminates the "Coanda effect". Accordingly, the water impinging on the ceiling, runs up to the set and the water reaching the set, detaches from the ceiling as a result of the structure of the set and falls down on the items such as glasses, cups etc. Consequently, the glasses and cups that are positioned on a special rack above the basket are washed more effectively.
[12] There is an additional lip-shaped protrusion on the set that extends towards the washing tank providing the water that flows on the ceiling surface to leave the ceiling surface more easily and quickly. By means of this protrusion, elimination of the "Coanda effect" can be realized more effectively. In an embodiment of the present invention, this protrusion is shaped like a channel that extends along the set. As a result of the protrusion extending along the set, the water that flows on the ceiling surface due to the 'Coanda effect" can be delivered into the washing tank before it reaches the side walls.
[13] By way of the present invention, the top rotor, the real function of which is cleaning of the washing tank ceiling, has been made to contribute effectively to the washing process of the items emplaced in the washing tank, especially the efficient washing of the glasses, cups etc. emplaced on a special rack situated over the top basket. By way of the sets formed on the ceiling surface, the water that does not detach from the ceiling surface and flows down the side walls to be discharged before participating in the washing process due to the 'Coanda effect", can be delivered into the washing chamber by nullifying the 'Coanda effect".
[14] The dishwasher realized in order to fulfill the objectives of the present invention is illustrated in the attached figures, where:
[15] Figure 1 - is the front perspective view of an empty dishwasher.
[16] Figure 2 - is the front perspective view of a filled in dishwasher.
[17] Figure 3 - is the sectional view of the dishwasher.
[18] The elements shown in figures are numbered as follows:
[19] 1. Dishwasher
[20] 2. Washing tank
[21] 3. Ceiling [22] 4. Side wall
[23] 5. Basket
[24] 6. Top rotor
[25] 7. Deflector
[26] 8. Spray arm
[27] 9. Set
[28] 10. Protrusion
[29] The dishwasher (1) of the present invention comprises a washing tank (2) having a ceiling (3) and more than one side wall (4), at least one basket (5) that is situated in the washing tank (2) providing the orderly arrangement of the items in the washing tank (2), at least one spray arm (8) that provides the spraying of washing water over the items emplaced in the basket (5) for washing them and a top rotor (6) mounted on the ceiling (3) providing to spray the water particularly towards the ceiling (3) to wash the ceiling (3).
[30] The dishwasher (1) comprises one or more deflectors (7) situated on the ceiling (3) providing to deliver the water sprayed towards the ceiling (3) to a predetermined region on the ceiling (3) before it detaches from the ceiling (3) due to the "Coanda effect' ' and one or more sets (9) providing the water delivered to the desired region by the deflector (7) to detach from the ceiling (3) surface before it reaches the side walls (4) of the washing tank (2) and to fall into the washing tank (2) in droplets (Figure 1 and Figure 2).
[31] The top rotor (6) comprises an inlet orifice through which water is delivered and spraying holes for discharging the water with a certain pressure. The top rotor (6) is preferably mounted in the center in order to evenly spray the water to all the regions of the ceiling (3).
[32] The set (9) is preferably situated above the rack (A) situated over the basket (5) on which items such as the glasses, cups etc. are emplaced. The deflector (7) extends along the ceiling (3) from the top rotor (6) towards the set (9). The water not leaving the ceiling due to the "Coanda effect" detaches from the ceiling (3) as a result of gravitational force due to the structure of the set (9) situated at the portion where the deflector (7) ends, extending into the washing tank (2), and flows towards the inside of the washing tank (2) and falls in droplets being directed particularly over the glasses, cups etc.. Accordingly, the water sprayed towards the ceiling (3) by the top rotor (6) that is not quite effective in washing the items emplaced in the washing tank (2) can be efficiently utilized in washing especially the glasses and the cups and provides the effective performance of the washing process (Figure 3).
[33] The dishwasher (1) comprises a flat impact surface (S) on the ceiling (3) with the top rotor (6) being in its center, facing opposite the spraying holes of the top rotor (6) with which the water exiting the top rotor (6) meets first, having an area encompassing the traversing area of the top rotor (6).
[34] In another embodiment of the present invention, the set (9) is positioned on the ceiling ((3) such that it is parallel to the side walls (4).
[35] In another embodiment of the present invention, the set (9) comprises a protrusion
(10) extending towards the washing tank (2), providing the fast and easy detachment of the water flowing on the ceiling (3) surface by way of the "Coanda effect". By way of this protrusion (10) formed on the set (9), the elimination of the "Coanda effect" can be executed more effectively.
[36] In yet another embodiment of the present invention, a channel is provided on the protrusion (10) that extends along the set (9). By way of the protrusion (10) extending along the set (9), almost all of the water that flows on the ceiling (3) surface can be delivered over the items in the washing tank (2) before it can reach the side walls (4).
[37] In another embodiment of the present invention, the set (9) is situated on the sides where the ceiling (3) joins with the side walls (4) of the washing tank (2).
[38] By way of the present invention, the water used in washing the ceiling (3) has been enabled to take part in the washing process. The water that does not detach from the ceiling (3) surface due to the "Coanda effect" and drains from the side walls (4), to be discharged without participating in the washing process, is transferred into the washing tank (2) by means of the sets (9) formed on the ceiling (3) surface by eliminating the "Coanda effect" before reaching the side walls (4).

Claims

Claims
[1] A dishwasher (1) comprising a washing tank (2) having a ceiling (3) and more than one side wall (4), at least one basket (5) that is situated in the washing tank (2) providing the orderly arrangement of the items in the washing tank (2), at least one spray arm (8) that provides the spraying of washing water over the items emplaced in the basket (5) for washing them, a top rotor 6) mounted on the ceiling (3) providing to spray the water particularly towards the ceiling (3) to wash the ceiling (3) and one or more deflectors (7) situated on the ceiling (3) providing to deliver the water sprayed towards the ceiling (3) to a predetermined region on the ceiling (3) before it detaches from the ceiling (3) by way of the "Coanda effect" and characterized by one or more sets (9) situated on the ceiling (3) providing the water delivered to the desired region by the deflector (7) to detach from the ceiling (3) surface before it reaches the side walls (4) of the washing tank (2) and to fall into the washing tank (2) in droplets by eliminating the "Coanda effect".
[2] A dishwasher (1) as in Claim 1, characterized by a set (9) situated above the rack
(A) positioned over the basket (5) on which items such as glasses, cups etc. are emplaced.
[3] A dishwasher (1) as in Claim 1 or 2, characterized by a set (9) situated at the portion where the deflector (7) ends, providing the water not leaving the ceiling due to the "Coanda effect' ' to detach from the ceiling (3) by the effect of gravity by means of the structure of the set (9) extending into the washing tank (2) and to fall towards the inside of the washing tank (2).
[4] A dishwasher (1) as in Claim 1 or 3, characterized by a set (9) positioned on the ceiling (3) such that it is parallel to the side walls (4).
[5] A dishwasher (1) as in Claim 1 or 4, characterized by a set (9) situated on the sides where the ceiling (3) joins with the side walls (4) of the washing tank (2).
[6] A dishwasher (1) as in any one of the above claims, characterized by a set (9) comprising a protrusion (10) extending towards the washing tank (2), providing the fast and easy detachment of the water flowing on the ceiling (3) surface due to the "Coanda effect".
[7] A dishwasher (1) as in Claim 6, characterized by a set (9) that comprises a protrusion (10) on which a channel extends along its length.
PCT/IB2006/054010 2005-10-31 2006-10-30 A dishwasher with water deflectors WO2007052209A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200504344 2005-10-31
TR2005/04344 2005-10-31

Publications (1)

Publication Number Publication Date
WO2007052209A1 true WO2007052209A1 (en) 2007-05-10

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ID=37735770

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/054010 WO2007052209A1 (en) 2005-10-31 2006-10-30 A dishwasher with water deflectors

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TR (1) TR200801845T1 (en)
WO (1) WO2007052209A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009003783A2 (en) * 2007-06-29 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Interior container for a dishwasher

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB443146A (en) * 1934-06-20 1936-02-20 John Little An improvement in washing machines
US2586398A (en) * 1944-05-02 1952-02-19 Ethan W Vars Spray-type dish-washing machine having a circulating pump and plural rotatable strainer means selectively cooperable therewith
CH424117A (en) * 1963-06-04 1966-11-15 Licentia Gmbh dishwasher
FR1512498A (en) * 1966-12-27 1968-02-09 Sedelem Soc D Etudes Et De Dev Spray deflector for dishwashing machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB443146A (en) * 1934-06-20 1936-02-20 John Little An improvement in washing machines
US2586398A (en) * 1944-05-02 1952-02-19 Ethan W Vars Spray-type dish-washing machine having a circulating pump and plural rotatable strainer means selectively cooperable therewith
CH424117A (en) * 1963-06-04 1966-11-15 Licentia Gmbh dishwasher
FR1512498A (en) * 1966-12-27 1968-02-09 Sedelem Soc D Etudes Et De Dev Spray deflector for dishwashing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009003783A2 (en) * 2007-06-29 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Interior container for a dishwasher
WO2009003783A3 (en) * 2007-06-29 2009-02-26 Bsh Bosch Siemens Hausgeraete Interior container for a dishwasher

Also Published As

Publication number Publication date
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