A DISHWASHER COMPRISING SPRAY ARM

Description

[0001] The present invention relates to a dishwasher comprising spray arm.

[0002] 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.

[0003] 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.

[0004] The aim of the present invention is to realize a dishwasher with enhanced washing performance.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] The elements in the figures are numbered individually and the correspondence of these numbers are given hereinafter.

1. Dishwasher

2. Body

3. Washing tub

4. Spray arm

5. Water supply line

6. Coupling mechanism

7. Bearer member

8. Rotatable member

9. First peak

10. First dip

11. Second peak

12. Second dip

13. Spring

14. Path

15. Projection

16. Lock

U- Upper position

A- Lower position

[0011] 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).

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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

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).

Ansprüche

1. Ein Geschirrspüler (1) umfasst einen Körper (2), eine Spülwanne (3), indessen der Spülvorgang durchgeführt wird, mindestens einen an der Spülwanne (3) angeordneten Sprüharm (4), der das Sprühen von Wasser in die Spülwanne (3) durch eine Drehung um sich selbst ermöglicht, eine Wasserversorgungsleitung (5), die Wasser, das sie durch das Leitungsnetz erhält, zum Sprüharm (4) führt, und einen Kupplungsmechanismus (6), der zwischen der Wasserversorgungsleitung (5) und dem Sprüharm (4) vorgesehen ist, wodurch der Sprüharm (4) an der Wasserversorgungsleitung (5) montiert werden kann, wobei der Kupplungsmechanismus (6) eine Bewegung des Sprüharms (4) in vertikaler Richtung ermöglicht, mithilfe eines Trägerelementes (7), dessen eines Ende mit der Wasserversorgungsleitung (5) und das andere Ende mit dem Sprüharm (4) verbunden ist, des Weiteren umfasst er ein drehbares Element (8), das an dem Trägerelement (7) so angebracht ist, dass es drehbar auf dem Trägerelement (7) ist, mindestens eine erste Spitze (9) und mindestens eine erste Senke (10), die auf der Oberfläche des Trägerelement (7), das das drehbare Element (8) berührt, wobei das drehbare Element (8) konfiguriert ist, um sich während der Drehung des Sprüharms (4) um seine Achse zu drehen, gekennzeichnet ist er durch mindestens eine zweite Spitze (11) und mindestens eine zweite Senke (12), die an der Oberfläche des drehbaren Elements (8) vorgesehen sind, die das Trägerelement (7) berührt, und eine an dem Trägerelement (7) vorgesehene Feder (13), die ermöglicht, dass das drehbare Element (8) nach oben gedrückt wird, wenn das drehbare Element (8) auf dem Trägerelement (7) montiert ist, wobei das Trägerelement (7) und das drehbare Element (8) so konfiguriert sind, dass sie sich mittels der Spitzen (9, 11) voneinander wegbewegen können, und einander mittels der Senken (10, 12) nähern, wobei die Feder (13) es der zweiten Spitze (11) und/oder der zweiten Senke (12) auf dem drehbaren Element ermöglicht, die erste Spitze (9) und/oder die erste Senke (10), die auf dem Trägerelement (7) bereitgestellt sind, kontinuierlich zu berühren.

2. Ein Geschirrspüler (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass der Sprüharm (4) eine obere Position (U) aufweist, in der die erste Spitze (9) oder die erste Vertiefung (10), die auf dem Trägerelement (7) vorgesehen ist und auf die zweite Vertiefung (12) oder die zweite Spitze (11) trifft und auf dem drehbaren Element (8) vorgesehen ist, wobei die untere Position (A), in der die erste Spitze (9), die auf dem Trägerelement (7) bereitgestellt ist, auf die zweite Spitze (11) trifft, die auf dem drehbaren Element (8) bereitgestellt ist.

3. Ein Geschirrspüler (1), wie in Anspruch 1 oder 2 aufgeführt, ist dadurch gekennzeichnet, dass eine vom Benutzer steuerbare Sperrung (16), die es dem Sprüharm (4) ermöglicht, sich nicht in vertikaler Richtung zu bewegen, mit einer um das drehbare Element (8) herum vorgesehenen Führung (14) und mindestens einem Vorsprung (15), der auf dem Trägerelement (7) vorgesehen ist und sich entlang der Schiene (14) fortbewegt.

Revendications

1. Un lave-vaisselle (1) comprenant un corps (2), une cuve de lavage (3) dans laquelle le processus de lavage est effectué, au moins un bras de pulvérisation (4) disposé sur la cuve de lavage (3), permettant de pulvériser de l'eau dans la cuve de lavage (3) en tournant autour de lui-même, une ligne d'alimentation en eau (5) transportant l'eau qu'elle reçoit par le réseau au bras de pulvérisation (4), et un mécanisme de couplage (6) prévu entre la ligne d'alimentation en eau (5) et le bras de pulvérisation (4), permettant au bras de pulvérisation (4) d'être monté sur la ligne d'alimentation en eau (5), le mécanisme de couplage (6) permettant au bras de pulvérisation (4) de se déplacer dans la direction verticale, ayant un élément porteur (7) dont une extrémité est connectée à la ligne d'alimentation en eau (5) et l'autre extrémité au bras de pulvérisation (4), un élément rotatif (8) monté sur l'élément porteur (7) de manière à pouvoir tourner sur l'élément porteur (7), au moins un premier pic (9) et au moins un premier creux (10) prévus sur la surface de l'élément porteur (7) en contact avec l'élément rotatif (8), dans lequel l'élément rotatif (8) est configuré pour tourner autour de son axe lors de la rotation du bras de pulvérisation (4), caractérisé par au moins un deuxième pic (11) et au moins un deuxième creux (12) prévus sur la surface de l'élément rotatif (8) en contact avec l'élément porteur (7), et un ressort (13) prévu sur l'élément porteur (7), permettant à l'élément rotatif (8) d'être poussé vers le haut lorsque l'élément rotatif (8) est monté sur l'élément porteur (7), dans lequel l'élément porteur (7) et l'élément rotatif (8) sont configurés pour s'éloigner l'un de l'autre au moyen des pics (9, 11) et pour se rapprocher l'un de l'autre au moyen des creux (10, 12), dans lequel le ressort (13) permet au second pic (11) et/ou au second creux (12) sur l'élément rotatif d'entrer continuellement en contact avec le premier pic (9) et/ou le premier creux (10) prévu sur l'élément porteur (7).

2. Un lave-vaisselle (1) selon la déclaration 1, est caractérisé en ce que le bras de pulvérisation (4) a une position supérieure (U) dans laquelle le premier pic (9) ou le premier creux (10) prévu sur l'élément porteur (7) rencontre le second creux (12) ou le second pic (11) prévu sur l'élément rotatif (8), et une position inférieure (A) dans laquelle le premier pic (9) prévu sur l'élément porteur (7) rencontre le second pic (11) prévu sur l'élément rotatif (8).

3. Un lave-vaisselle (1) selon la déclaration 1 ou la déclaration 2, est caractérisé en ce qu'un verrou (16) qui peut être commandé par l'utilisateur, permettant au bras de pulvérisation (4) de ne pas se déplacer dans la direction verticale, ayant une piste (14) prévue tout autour de l'élément rotatif (8) et au moins une saillie (15) prévue sur l'élément porteur (7), avançant le long de la piste (14).

Drawing