EP3796826B1 - A dishwasher comprising spray arm - Google Patents

A dishwasher comprising spray arm Download PDF

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Publication number
EP3796826B1
EP3796826B1 EP19720853.1A EP19720853A EP3796826B1 EP 3796826 B1 EP3796826 B1 EP 3796826B1 EP 19720853 A EP19720853 A EP 19720853A EP 3796826 B1 EP3796826 B1 EP 3796826B1
Authority
EP
European Patent Office
Prior art keywords
spray arm
bearer
rotatable member
peak
dip
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
EP19720853.1A
Other languages
German (de)
French (fr)
Other versions
EP3796826A1 (en
Inventor
Onur Poyraz
Ahmet Alptekin
Saadettin DOKMECI
Samet AKAN
Husnu Kerpicci
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 date
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Publication of EP3796826A1 publication Critical patent/EP3796826A1/en
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Publication of EP3796826B1 publication Critical patent/EP3796826B1/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
    • A47L15/14—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 comprising spray arm.
  • the washing process is performed by spraying water coming through a water supply line on the dishes by means of spray arms. Water is sprayed on the surfaces of the dishes placed on a basket through a spray arm.
  • the spray arms rotate about themselves in different revolutions and speeds for homogeneous spraying of water on all dishes in the dishwasher. Water is thus enabled to be angularly transmitted on the dishes. Water can reach more regions as its intensity and speed increase. Washing performance is thus enhanced.
  • water transmitted from the spray arms fails to reach the dishes due to a high amount of dishes or the dishes not being placed well enough, and washing performance decreases. Increasing the amount and flow rate of water in order to enhance washing performance leads to a higher energy and/or water consumption.
  • EP0962181 discloses a dishwasher comprising a spray arm capable of angular motion by means of a magnetic positioning system.
  • WO2014/090876A1 discloses a dishwasher comprising a spray arm and protrusions on the spray arm bearing so that the movement of the spray arm ends between the protrusions.
  • the aim of the present invention is to realize a dishwasher with enhanced washing performance.
  • the dishwasher realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims comprises a body, a washing tub in which items to be washed are placed, at least one spray arm enabling washing of the items by spraying water in the washing tub and a water supply line enabling conveying water to the spray arm.
  • the spray arm is detachably attached to the water supply line by means of a coupling mechanism. Water is conveyed to the washing tub through the water supply line by means of the water supply line. Water reaching through the water supply line to the spray arm is conveyed to the items placed in the washing tub by being sprayed.
  • the dishwasher of the invention comprises a coupling mechanism having a bearer member and a rotatable member.
  • An end of the bearer member is mounted to the water supply line and the other end to the spray arm.
  • the spray arm is connected to the water supply line by means of the bearer member, enabling water transmission through the water supply line to the spray arm.
  • the rotatable member is mounted on the bearer member.
  • the rotatable member rotates about its axis upon rotation of the spray arm. At least one first peak and at least one first dip are provided on the surface of the bearer member contacting the rotatable member. At least one second peak and at least one second dip are provided on the surface of the rotatable member contacting the bearer member.
  • the bearer member and the rotatable member move away from each other by means of the peaks and approach each other by means of the dips.
  • a spring is provided on the bearer member, enabling the rotatable member to be continuously pushed upwards.
  • the spring enables the second peak and/or the second dip on the rotatable member to continuously contact the first peak and or the first dip provided on the bearer.
  • the spray arm is thus enabled to continuously move in vertical direction. The motion of the spray arm in vertical direction enables the sprayed water to reach a wider area. Washing performance is thus enhanced.
  • the dishwasher comprises a spray arm having an upper position in which the first peak provided on the bearer member meets the second dip provided on the rotatable member or in which the second peak provided on the rotatable member meets the second dip provided on the bearer member, and a lower position in which the first peak provided on the bearer member meets the second peak provided on the rotatable member.
  • the dishwasher comprises a lock which can be controlled by the user.
  • the lock comprises a recess provided all around the rotatable member and a track provided all around the bearer member. The recess extends along the track.
  • the dishwasher (1) comprises a body (2), a washing tub (3) in which the washing process is performed, at least one spray arm (4) arranged on the washing tub (3), enabling spraying water in the washing tub (3) by rotating about itself, a water supply line (5) conveying water it receives through the mains to the spray arm (4), and a coupling mechanism (6) provided between the water supply line (5) and the spray arm (4), enabling the spray arm (4) to be mounted on the water supply line (5). Water coming through the water supply line (5) is sprayed on the dishes by means of the spray arm (4), thereby enabling performing the washing process.
  • the spray arm (4) is detachably attached on the water supply line (5) by means of the coupling mechanism (6).
  • the dishwasher (1) of the invention comprises a coupling mechanism (6) enabling the spray arm (4) to move in vertical direction and having a bearer member (7) whose one end is connected to the water supply line (5) and the other end to the spray arm (4), a rotatable member (8) mounted on the bearer member (7) so as to be rotatable on the bearer member (7), at least one first peak (9) and at least one first dip (10) provided on the surface of the bearer member (7) contacting the rotatable member (8), at least one second peak (11) and at least one second dip (12) provided on the surface of the rotatable member (8) contacting the bearer member (7), and a spring (13) provided on the bearer member (7), enabling the rotatable member (8) to be pushed upwards when the rotatable member (8) is mounted on the bearer member (7).
  • the rotatable member (8) is rotatably mounted on the bearer member (7). Dips (10, 12) and peaks (9, 11) are provided on the bearer member (7) and the rotatable member (8). The distance between the bearer member (7) and the rotatable member (8) varies by means of the dips (10, 12) and the peaks (9, 11). The bearer member (7) and the rotatable member (8) approach and move away from each other. The spray arm (4) thus moves in vertical direction.
  • the spring (13) enables the rotatable member (8) to be continuously pushed towards the bearer member (7).
  • the bearer member (7) and the rotatable member (8) are thus enabled to continuously contact each other. Movement of the spray arm (4) in vertical direction enables the sprayed water to reach a wider dirty area, enhancing washing performance.
  • the dishwasher (1) comprises a spray arm (4) having an upper position (U) in which the first peak (9) or the first dip (10) provided on the bearer member (7) meets the second dip (12) or the second peak (11) provided on the rotatable member (8), and a lower position (A) in which the first peak (9) provided on the bearer member (7) meets the second peak (11) provided on the rotatable member (8).
  • the spray arm (4) is farther from the dishes when it is in the upper position (U). Taller dishes are thus enabled to be cleaned.
  • the spray arm (4) assumes the lower position (A), water is enabled to be transmitted to smaller kitchenware resting in between other items.
  • the dishwasher (1) comprises a lock (16) which can be controlled by the user, enabling the spray arm (4) to not move in vertical direction, having a track (14) provided all around the rotatable member (8), and at least one projection (15) provided on the bearer member (7), advancing along the track (14).
  • the projection (15) settles on the track (14) and the spray arm (4) only rotates about its axis without moving in vertical direction.
  • the invention enables realizing a dishwasher (1) with enhanced washing performance.
  • the coupling mechanism (6) enabling the spray arm (4) to be connected to the water supply line (5), comprises a bearer member (7) and a rotatable member (8).
  • the rotatable member (8) moves in vertical direction on the bearer member (7) by means of the peaks (9, 11) and the dips (10, 12) provided on the surfaces of the rotatable member (8) and the bearer member (7) contacting each other.
  • This enables the spray arm (4) also to move in vertical direction. Water is transmitted to more kitchenware by means of the spray arm (4) moving in vertical direction. Washing performance is thus enhanced.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Description

  • The present invention relates to a dishwasher comprising spray arm.
  • In dishwashers, the washing process is performed by spraying water coming through a water supply line on the dishes by means of spray arms. Water is sprayed on the surfaces of the dishes placed on a basket through a spray arm. The spray arms rotate about themselves in different revolutions and speeds for homogeneous spraying of water on all dishes in the dishwasher. Water is thus enabled to be angularly transmitted on the dishes. Water can reach more regions as its intensity and speed increase. Washing performance is thus enhanced. However, water transmitted from the spray arms fails to reach the dishes due to a high amount of dishes or the dishes not being placed well enough, and washing performance decreases. Increasing the amount and flow rate of water in order to enhance washing performance leads to a higher energy and/or water consumption.
  • State of the art patent document no. EP0962181 discloses a dishwasher comprising a spray arm capable of angular motion by means of a magnetic positioning system. Further, the state of the art patent document no. WO2014/090876A1 discloses a dishwasher comprising a spray arm and protrusions on the spray arm bearing so that the movement of the spray arm ends between the protrusions.
  • The aim of the present invention is to realize a dishwasher with enhanced washing performance.
  • The dishwasher realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims comprises a body, a washing tub in which items to be washed are placed, at least one spray arm enabling washing of the items by spraying water in the washing tub and a water supply line enabling conveying water to the spray arm. The spray arm is detachably attached to the water supply line by means of a coupling mechanism. Water is conveyed to the washing tub through the water supply line by means of the water supply line. Water reaching through the water supply line to the spray arm is conveyed to the items placed in the washing tub by being sprayed.
  • The dishwasher of the invention comprises a coupling mechanism having a bearer member and a rotatable member. An end of the bearer member is mounted to the water supply line and the other end to the spray arm. The spray arm is connected to the water supply line by means of the bearer member, enabling water transmission through the water supply line to the spray arm. The rotatable member is mounted on the bearer member. The rotatable member rotates about its axis upon rotation of the spray arm. At least one first peak and at least one first dip are provided on the surface of the bearer member contacting the rotatable member. At least one second peak and at least one second dip are provided on the surface of the rotatable member contacting the bearer member. The bearer member and the rotatable member move away from each other by means of the peaks and approach each other by means of the dips. A spring is provided on the bearer member, enabling the rotatable member to be continuously pushed upwards. The spring enables the second peak and/or the second dip on the rotatable member to continuously contact the first peak and or the first dip provided on the bearer. The spray arm is thus enabled to continuously move in vertical direction. The motion of the spray arm in vertical direction enables the sprayed water to reach a wider area. Washing performance is thus enhanced.
  • In an embodiment of the invention, the dishwasher comprises a spray arm having an upper position in which the first peak provided on the bearer member meets the second dip provided on the rotatable member or in which the second peak provided on the rotatable member meets the second dip provided on the bearer member, and a lower position in which the first peak provided on the bearer member meets the second peak provided on the rotatable member.
  • In an embodiment of the invention, the dishwasher comprises a lock which can be controlled by the user. The lock comprises a recess provided all around the rotatable member and a track provided all around the bearer member. The recess extends along the track.
  • A dishwasher realized to achieve the aim of the present invention is illustrated in the accompanying drawings, wherein:
    • Figure 1 is a perspective view of the dishwasher.
    • Figure 2 is a perspective view of the water supply line and the spray arm.
    • Figure 3 is a perspective view of the bearer member.
    • Figure 4 is a perspective view of the rotatable member.
    • Figure 5 is a schematic view of the coupling mechanism with the spray arm in lower position.
    • Figure 6 is a schematic view of the coupling mechanism with the spray arm in upper position.
  • The elements in the figures are numbered individually and the correspondence of these numbers are given hereinafter.
    1. 1. Dishwasher
    2. 2. Body
    3. 3. Washing tub
    4. 4. Spray arm
    5. 5. Water supply line
    6. 6. Coupling mechanism
    7. 7. Bearer member
    8. 8. Rotatable member
    9. 9. First peak
    10. 10. First dip
    11. 11. Second peak
    12. 12. Second dip
    13. 13. Spring
    14. 14. Path
    15. 15. Projection
    16. 16. Lock
    U- Upper position A- Lower position
  • The dishwasher (1) comprises a body (2), a washing tub (3) in which the washing process is performed, at least one spray arm (4) arranged on the washing tub (3), enabling spraying water in the washing tub (3) by rotating about itself, a water supply line (5) conveying water it receives through the mains to the spray arm (4), and a coupling mechanism (6) provided between the water supply line (5) and the spray arm (4), enabling the spray arm (4) to be mounted on the water supply line (5). Water coming through the water supply line (5) is sprayed on the dishes by means of the spray arm (4), thereby enabling performing the washing process. The spray arm (4) is detachably attached on the water supply line (5) by means of the coupling mechanism (6).
  • The dishwasher (1) of the invention comprises a coupling mechanism (6) enabling the spray arm (4) to move in vertical direction and having a bearer member (7) whose one end is connected to the water supply line (5) and the other end to the spray arm (4), a rotatable member (8) mounted on the bearer member (7) so as to be rotatable on the bearer member (7), at least one first peak (9) and at least one first dip (10) provided on the surface of the bearer member (7) contacting the rotatable member (8), at least one second peak (11) and at least one second dip (12) provided on the surface of the rotatable member (8) contacting the bearer member (7), and a spring (13) provided on the bearer member (7), enabling the rotatable member (8) to be pushed upwards when the rotatable member (8) is mounted on the bearer member (7). The rotatable member (8) is rotatably mounted on the bearer member (7). Dips (10, 12) and peaks (9, 11) are provided on the bearer member (7) and the rotatable member (8). The distance between the bearer member (7) and the rotatable member (8) varies by means of the dips (10, 12) and the peaks (9, 11). The bearer member (7) and the rotatable member (8) approach and move away from each other. The spray arm (4) thus moves in vertical direction. The spring (13) enables the rotatable member (8) to be continuously pushed towards the bearer member (7). The bearer member (7) and the rotatable member (8) are thus enabled to continuously contact each other. Movement of the spray arm (4) in vertical direction enables the sprayed water to reach a wider dirty area, enhancing washing performance.
  • In an embodiment of the invention, the dishwasher (1) comprises a spray arm (4) having an upper position (U) in which the first peak (9) or the first dip (10) provided on the bearer member (7) meets the second dip (12) or the second peak (11) provided on the rotatable member (8), and a lower position (A) in which the first peak (9) provided on the bearer member (7) meets the second peak (11) provided on the rotatable member (8). The spray arm (4) is farther from the dishes when it is in the upper position (U). Taller dishes are thus enabled to be cleaned. When the spray arm (4) assumes the lower position (A), water is enabled to be transmitted to smaller kitchenware resting in between other items.
  • In an embodiment of the invention, the dishwasher (1) comprises a lock (16) which can be controlled by the user, enabling the spray arm (4) to not move in vertical direction, having a track (14) provided all around the rotatable member (8), and at least one projection (15) provided on the bearer member (7), advancing along the track (14). When the user desires to inhibit movement of the spray arm (4) in vertical direction, the projection (15) settles on the track (14) and the spray arm (4) only rotates about its axis without moving in vertical direction.
  • The invention enables realizing a dishwasher (1) with enhanced washing performance. The coupling mechanism (6) enabling the spray arm (4) to be connected to the water supply line (5), comprises a bearer member (7) and a rotatable member (8). The rotatable member (8) moves in vertical direction on the bearer member (7) by means of the peaks (9, 11) and the dips (10, 12) provided on the surfaces of the rotatable member (8) and the bearer member (7) contacting each other. This enables the spray arm (4) also to move in vertical direction. Water is transmitted to more kitchenware by means of the spray arm (4) moving in vertical direction. Washing performance is thus enhanced.

Claims (3)

  1. A dishwasher (1) comprising a body (2), a washing tub (3) in which the washing process is performed, at least one spray arm (4) arranged on the washing tub (3), enabling spraying water in the washing tub (3) by rotating about itself, a water supply line (5) conveying water it receives through the mains to the spray arm (4), and a coupling mechanism (6) provided between the water supply line (5) and the spray arm (4), enabling the spray arm (4) to be mounted on the water supply line (5), the coupling mechanism (6) enabling the spray arm (4) to move in vertical direction, having a bearer member (7) whose one end is connected to the water supply line (5) and the other end to the spray arm (4), a rotatable member (8) mounted on the bearer member (7) so as to be rotatable on the bearer member (7), at least one first peak (9) and at least one first dip (10) provided on the surface of the bearer member (7) contacting the rotatable member (8), wherein the rotatable member (8) is configured to rotate about its axis upon rotation of the spray arm (4), characterised by at least one second peak (11) and at least one second dip (12) provided on the surface of the rotatable member (8) contacting the bearer member (7), and a spring (13) provided on the bearer member (7), enabling the rotatable member (8) to be pushed upwards when the rotatable member (8) is mounted on the bearer member (7), whereby the bearer member (7) and the rotatable member (8) are configured to move away from each other by means of the peaks (9, 11) and to approach each other by means of the dips (10, 12), wherein the spring (13) enables the second peak (11) and/or the second dip (12) on the rotatable member to continuously contact the first peak (9) and/or the first dip (10) provided on the bearer member (7).
  2. A dishwasher (1) according to claim 1, characterized by the spray arm (4) having an upper position (U) in which the first peak (9) or the first dip (10) provided on the bearer member (7) meets the second dip (12) or the second peak (11) provided on the rotatable member (8), and a lower position (A) in which the first peak (9) provided on the bearer member (7) meets the second peak (11) provided on the rotatable member (8).
  3. A dishwasher (1) according to claim 1 or claim 2, characterized by a lock (16) which can be controlled by the user, enabling the spray arm (4) to not move in vertical direction, having a track (14) provided all around the rotatable member (8) and at least one projection (15) provided on the bearer member (7), advancing along the track (14).
EP19720853.1A 2018-05-21 2019-04-29 A dishwasher comprising spray arm Active EP3796826B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201807112 2018-05-21
PCT/EP2019/060938 WO2019223961A1 (en) 2018-05-21 2019-04-29 A dishwasher comprising spray arm

Publications (2)

Publication Number Publication Date
EP3796826A1 EP3796826A1 (en) 2021-03-31
EP3796826B1 true EP3796826B1 (en) 2022-01-05

Family

ID=66349546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19720853.1A Active EP3796826B1 (en) 2018-05-21 2019-04-29 A dishwasher comprising spray arm

Country Status (2)

Country Link
EP (1) EP3796826B1 (en)
WO (1) WO2019223961A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3362498B2 (en) * 1994-03-31 2003-01-07 松下電器産業株式会社 Dishwasher
DE19824824C2 (en) 1998-06-04 2002-11-14 Aeg Hausgeraete Gmbh Dishwasher with a rotating spray arm
DE202007002454U1 (en) * 2007-02-19 2007-04-19 V-Zug Ag Dish washer has swiveling section of supply line which is arranged in area of back side of cage and is swiveled around first axle parallel to direction of extension of cage
EP2931107B1 (en) * 2012-12-12 2017-08-02 Arçelik Anonim Sirketi A dishwasher

Also Published As

Publication number Publication date
WO2019223961A1 (en) 2019-11-28
EP3796826A1 (en) 2021-03-31

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