EP2494906A1 - Sprinkling assembly for dishwashers comprising a secondary oscillating sprinkler - Google Patents
Sprinkling assembly for dishwashers comprising a secondary oscillating sprinkler Download PDFInfo
- Publication number
- EP2494906A1 EP2494906A1 EP11425050A EP11425050A EP2494906A1 EP 2494906 A1 EP2494906 A1 EP 2494906A1 EP 11425050 A EP11425050 A EP 11425050A EP 11425050 A EP11425050 A EP 11425050A EP 2494906 A1 EP2494906 A1 EP 2494906A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sprinkler
- primary
- sprinkling assembly
- shutter
- wash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000010355 oscillation Effects 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
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
- A47L15/14—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
-
- 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
- A47L15/20—Swingable spraying devices
Definitions
- the present invention relates to sprinkling assemblies for dishwashers, and in particular to a sprinkling assembly comprising a primary revolving sprinkler and a secondary sprinkler capable of moving with an oscillatory motion in the horizontal plane.
- conventional revolving sprinklers essentially consist of a single device pivoted on a vertical axis central shaft and provided with at least one propulsion nozzle at one end, as well as with other nozzles arranged along said device to sprinkle the dishes contained in the dishwasher rack. Since the rotation axis of said device is fixed, the resulting paths of the nozzles consist of circumferences centered on the rotation axis.
- the above-mentioned device directly sprinkles always and only the surfaces of the dishes which are along said circular paths, with a limited washing effectiveness.
- the area which can be reached by the water ejected from the nozzles approximately corresponds to the area of the square circumscribed about the circular path of the outermost nozzle.
- the inclined jet coming out from a propulsion end nozzle of the sprinkler generates a reaction force which can be broken up in the horizontal plane into a first component along the longitudinal axis of the sprinkler and a second component along a direction perpendicular thereto. While this second component is the one which generates the rotation of the sprinkler, the component along the longitudinal axis is discharged on the shaft located at the end of the support arm. This results, therefore, in a horizontal rotation of said arm pivoted on the vertical axis of the feed duct, moving alternately from right to left and backwards according to the rotation of the sprinkler, i.e. according to the direction from which the axial component arrives on the sprinkler shaft.
- This arrangement allows to sprinkle also the outermost dishes when they are arranged in a rectangular tank and also increases the surface directly sprinkled by the jets emitted from the nozzles, since thanks to the combination of the revolving motion of the sprinkler with the reciprocating motion the nozzle paths have a much more complex development.
- the revolving and reciprocating motions of the sprinkler are mutually bound, i.e. at each rotation of the sprinkler corresponds a translation thereof due to the oscillation of the support arm.
- EP 1201178 provides a sprinkling assembly wherein the ratio between the revolving frequency of the sprinkler and the oscillating frequency of the support arm is no longer one but much greater.
- the support arm is provided with two opposite nozzles suitable to emit jets that cause the oscillation of the arm, the emission of said jets being controlled by a rotating shutter whose rotation is controlled by the rotation of the sprinkler through a lower ring externally provided with a tooth suitable to engage with an adjacent horizontal toothed wheel which is integral with the shutter.
- the object of the present invention is to provide a revolving sprinkling assembly that overcomes the above-mentioned limits of prior art sprinklers.
- the fundamental advantage of the sprinkling assembly according to the present invention resides in its greater simplicity, inexpensiveness and reliability obtained thanks to the elimination of the cantilevered support arm and to the coaxial arrangement of the two sprinklers in the middle of the wash tank.
- a further advantage stems from the possibility of easily setting within a certain range the transmission ratio between the two sprinklers, i.e. the time interval between the oscillations of the secondary sprinkler.
- the sprinkling assembly essentially consists of a primary revolving sprinkler 1 and a secondary oscillating sprinkler 2, with the former coaxially pivoted on the latter which is in turn pivoted on a support 3 arranged at the end of a water supply duct (not shown).
- sprinkler 1 is centrally snap-fitted on sprinkler 2 through a bottom ring 4 that engages a top socket 5 of sprinkler 2, which is in turn centrally snap-fitted through a bottom ring 6 that engages support 3 and is in communication with the top socket 5.
- the supply duct reaching support 3 feeds both sprinklers 1 and 2.
- the primary sprinkler 1 is a conventional hollow sprinkler with two opposite arms provided with a wash and propulsion nozzle 1a at the end of each arm and with wash nozzles 1b along its length, which substantially corresponds to the shorter side of the rectangular tank in which it is located (the width in the illustrated example).
- the secondary sprinkler 2 has a shape similar to the primary sprinkler 1 but, on the contrary, its length substantially corresponds to the longer side of the rectangular tank (the length in the illustrated example) and it is provided only with wash and propulsion nozzles in the end portions projecting beyond the primary sprinkler 1, said nozzles being arranged in two opposite pairs 2a, 2b at the end of the first arm and two opposite pairs 2c, 2d at the end of the second arm.
- the secondary sprinkler 2 is an oscillating sprinkler that alternately moves in the two directions thanks to the push of the jets sequentially emitted from the end nozzles 2a, 2b, 2c and 2d as explained hereafter.
- a fraction of the pressurised water arriving through the supply duct and support 3 rather than flowing into the primary sprinkler 1 is laterally diverted into a chamber 7, open at the top, which is formed in the first arm of the secondary sprinkler 2 next to the top socket 5.
- Said chamber 7 has four lateral openings 7a, 7b, 7c, 7d putting it into communication with four ducts 8a, 8b, 8c, 8d extending in the two arms between chamber 7 and nozzles 2a, 2b, 2c, 2d respectively.
- the bottom ring 4 of the primary sprinkler 1 is externally provided with a tooth 4a that at each rotation of sprinkler 1 engages an adjacent horizontal toothed wheel 9 which is integral with an underlying cylindrical shutter 10.
- Said shutter 10 is provided with a lateral opening 10a and rotatably snap-fitted within chamber 7 so as to close it at the top and allow the water out only through said lateral opening 10a.
- opening 10a has a size equal to the size of openings 7a, 7b, 7c, 7d and when it is aligned with one of said openings it allows the water to flow out into the relevant duct 8a, 8b, 8c, 8d so as to reach the respective end nozzles 2a, 2b, 2c, 2d.
- opening 10a arrives at opening 7b whereby the water can flow into duct 8b and reach nozzles 2b generating jets that cause a clockwise oscillation opposite to the preceding one, thus taking the secondary sprinkler 2 back to the position of Fig.5 .
- This position is obviously also defined by an end stop and along the path nozzles 2b sprinkle the rear portion of the wash tank.
- the oscillating cycle of the secondary sprinkler 2 is completed with a similar back-and-forth oscillatory movement when the following rotations of shutter 10 take opening 10a into alignment first with opening 7c and then with opening 7d, whereby the water is emitted from nozzles 2c, 2d that sprinkle the front portion of the wash tank not covered by the nozzles of the primary sprinkler 1.
- this simple structural arrangement allows to oscillate the secondary sprinkler 2 only every three rotations of the primary sprinkler 1, and it is also clear that it is sufficient to change the number of teeth of wheel 9 and/or of ring 4 to change said oscillating frequency.
- openings 7a, 7b, 7c, 7d and/or an opening 10a having a greater width e.g. extending over an arc of rotation of 60° rather than 30° such that chamber 7 remains in communication with the respective duct 8a, 8b, 8c, 8d through two rotations of the primary sprinkler 1.
- the rotating shutter 10 could be provided with a second opening 10a diametrically opposite to the first opening illustrated above so as to put chamber 7 in communication simultaneously with the two arms, i.e. with ducts 8a, 8c or ducts 8b, 8d. In this way it is possible to achieve the sprinkling of both the front portion and the rear portion of the wash tank at every oscillation of the secondary sprinkler 2.
- the members defining the oscillating frequency of the secondary sprinkler 2' namely ring 4, chamber 7', toothed wheel 9 and rotating shutter 10 may remain the same or be consequently changed, providing a different transmission ratio and/or openings greater in number and/or larger in size.
- the oscillating frequency of the secondary sprinkler 2' is reduced by half.
- the illustrated embodiments relating to a sprinkling assembly located at the bottom of the tank under the bottom rack are mere examples, since the same structure can be similarly applied in other ways.
- the sprinkling assembly can be located also above the top rack by turning it upside down, since in that case support 3 extends downwards from the tank ceiling and the sprinkling takes place from above, or below the top rack by swapping the positions of the primary and secondary sprinklers since in that case support 3 extends downwards from the top rack and the sprinkling takes place from below.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
- The present invention relates to sprinkling assemblies for dishwashers, and in particular to a sprinkling assembly comprising a primary revolving sprinkler and a secondary sprinkler capable of moving with an oscillatory motion in the horizontal plane.
- It is known that conventional revolving sprinklers essentially consist of a single device pivoted on a vertical axis central shaft and provided with at least one propulsion nozzle at one end, as well as with other nozzles arranged along said device to sprinkle the dishes contained in the dishwasher rack. Since the rotation axis of said device is fixed, the resulting paths of the nozzles consist of circumferences centered on the rotation axis.
- From this follows that the above-mentioned device directly sprinkles always and only the surfaces of the dishes which are along said circular paths, with a limited washing effectiveness. Moreover, the area which can be reached by the water ejected from the nozzles approximately corresponds to the area of the square circumscribed about the circular path of the outermost nozzle.
- The simplest solution in trying to overcome this latter limit is that of giving a greater inclination to the end nozzles of the sprinkler so that the water jets emitted therefrom reach beyond the area of rotation. For example, it is possible to use a sprinkler provided with a nozzle inclined at about 75° so as to cover also the foremost portion of the rack in a dishwasher whose width is smaller than its length (typically 45 x 60 cm).
- This solution has a first drawback of poor washing effectiveness in the end portion of the rack, since very inclined jets are unable to properly enter between the dishes arranged side by side like the almost vertical jets emitted by the other nozzles can do. Moreover, a second drawback stems from the fact that such inclined jets hit the walls of the washing space with a considerable horizontal component thus causing a significant noisiness of the dishwasher.
- An improvement with respect to this simple type of sprinkler is the mobile sprinkler disclosed in
EP 0727176 which is pivoted on a shaft located at the end of a support arm which is in turn vertically pivoted at its other end to a feed duct integral with the wash tank. This support arm is therefore provided also with a horizontal reciprocating motion generated by the sprinkler itself due to the distance between the axis of the shaft on which it is pivoted and the point where the support arm is pivoted on the feed duct. - In fact, the inclined jet coming out from a propulsion end nozzle of the sprinkler generates a reaction force which can be broken up in the horizontal plane into a first component along the longitudinal axis of the sprinkler and a second component along a direction perpendicular thereto. While this second component is the one which generates the rotation of the sprinkler, the component along the longitudinal axis is discharged on the shaft located at the end of the support arm. This results, therefore, in a horizontal rotation of said arm pivoted on the vertical axis of the feed duct, moving alternately from right to left and backwards according to the rotation of the sprinkler, i.e. according to the direction from which the axial component arrives on the sprinkler shaft.
- This arrangement allows to sprinkle also the outermost dishes when they are arranged in a rectangular tank and also increases the surface directly sprinkled by the jets emitted from the nozzles, since thanks to the combination of the revolving motion of the sprinkler with the reciprocating motion the nozzle paths have a much more complex development. However in this type of structure the revolving and reciprocating motions of the sprinkler are mutually bound, i.e. at each rotation of the sprinkler corresponds a translation thereof due to the oscillation of the support arm.
- This implies that a high revolving frequency of the sprinkler corresponds to a high oscillating frequency of the support arm and therefore to a certain noisiness since the support arm hits the end stops at the end of each travel. Moreover, it is impossible to reduce said oscillating frequency of the arm without decreasing the revolving speed of the sprinkler thus negatively affecting the washing effectiveness.
- An improvement over this arrangement is disclosed in
EP 1201178 that provides a sprinkling assembly wherein the ratio between the revolving frequency of the sprinkler and the oscillating frequency of the support arm is no longer one but much greater. In other words, it is possible to set a transmission ratio whereby the oscillation of the support arm occurs only every given number of rotations of the sprinkler, with the advantage of lower noisiness and lower wear achieved thanks to the reduction of the oscillating frequency of the support arm. - To achieve this, in brief, the support arm is provided with two opposite nozzles suitable to emit jets that cause the oscillation of the arm, the emission of said jets being controlled by a rotating shutter whose rotation is controlled by the rotation of the sprinkler through a lower ring externally provided with a tooth suitable to engage with an adjacent horizontal toothed wheel which is integral with the shutter.
- Although this sprinkling assembly provides significant advantages with respect to the sprinkling assembly disclosed in
EP 0727176 , nonetheless it is not free from drawbacks substantially due to the presence of the cantilevered support arm which still implies problems of cost, complexity and reliability. - Therefore the object of the present invention is to provide a revolving sprinkling assembly that overcomes the above-mentioned limits of prior art sprinklers.
- This object is achieved by means of a sprinkling assembly in which the revolving sprinkler is no longer mounted on a cantilevered support arm but rather on a secondary oscillating sprinkler which is longer and coaxial thereto. In other words, a mechanism similar to the mechanism that in
EP 1201178 was used to achieve the oscillation of the support arm only every given number of rotations of the revolving sprinkler, in this new arrangement is used to achieve a periodical oscillation of said secondary sprinkler that having a greater length can reach the portions of the tank not covered by the revolving sprinkler. - The fundamental advantage of the sprinkling assembly according to the present invention resides in its greater simplicity, inexpensiveness and reliability obtained thanks to the elimination of the cantilevered support arm and to the coaxial arrangement of the two sprinklers in the middle of the wash tank.
- A further advantage stems from the possibility of easily setting within a certain range the transmission ratio between the two sprinklers, i.e. the time interval between the oscillations of the secondary sprinkler.
- These and other advantages and characteristics of the sprinkling assembly according to the present invention will be clear to those skilled in the art from the following detailed description of two embodiments thereof, with reference to the annexed drawings wherein:
-
Fig.1 is a diagrammatic, partially sectional side view of a first embodiment of the sprinkling assembly; -
Fig.2 is an enlarged view of detail A ofFig.1 . -
Fig.3 is a diagrammatic exploded view of the sprinkling assembly; -
Fig.4 is an enlarged view of detail B ofFig.3 ; -
Fig.5 is a diagrammatic top plan view of the sprinkling assembly placed at the center of the wash tank of a dishwasher whose width is smaller than its length; -
Fig.6 is an enlarged view of detail C ofFig.5 ; and -
Fig.7 is a diagrammatic top plan view of a second embodiment of the sprinkling assembly placed in the same wash tank ofFig.5 but at an eccentric position. - Referring to
figures 1 to 6 , there is seen that the sprinkling assembly according to the present invention essentially consists of a primary revolvingsprinkler 1 and a secondary oscillatingsprinkler 2, with the former coaxially pivoted on the latter which is in turn pivoted on asupport 3 arranged at the end of a water supply duct (not shown). - In practice, as shown in the detail of
Fig.2 ,sprinkler 1 is centrally snap-fitted onsprinkler 2 through abottom ring 4 that engages atop socket 5 ofsprinkler 2, which is in turn centrally snap-fitted through a bottom ring 6 that engagessupport 3 and is in communication with thetop socket 5. In this way, the supplyduct reaching support 3 feeds bothsprinklers - The
primary sprinkler 1 is a conventional hollow sprinkler with two opposite arms provided with a wash andpropulsion nozzle 1a at the end of each arm and withwash nozzles 1b along its length, which substantially corresponds to the shorter side of the rectangular tank in which it is located (the width in the illustrated example). - The
secondary sprinkler 2 has a shape similar to theprimary sprinkler 1 but, on the contrary, its length substantially corresponds to the longer side of the rectangular tank (the length in the illustrated example) and it is provided only with wash and propulsion nozzles in the end portions projecting beyond theprimary sprinkler 1, said nozzles being arranged in twoopposite pairs opposite pairs - As a consequence, while the
primary sprinkler 1 is a simple revolving sprinkler that continuously revolves in the same direction, thesecondary sprinkler 2 is an oscillating sprinkler that alternately moves in the two directions thanks to the push of the jets sequentially emitted from theend nozzles - In fact, a fraction of the pressurised water arriving through the supply duct and support 3 rather than flowing into the
primary sprinkler 1 is laterally diverted into achamber 7, open at the top, which is formed in the first arm of thesecondary sprinkler 2 next to thetop socket 5. Saidchamber 7 has fourlateral openings ducts chamber 7 andnozzles - The
bottom ring 4 of theprimary sprinkler 1 is externally provided with atooth 4a that at each rotation ofsprinkler 1 engages an adjacenthorizontal toothed wheel 9 which is integral with an underlyingcylindrical shutter 10. Saidshutter 10 is provided with alateral opening 10a and rotatably snap-fitted withinchamber 7 so as to close it at the top and allow the water out only through saidlateral opening 10a. - In practice, as shown in the detail of
Fig.6 , opening 10a has a size equal to the size ofopenings relevant duct respective end nozzles - The simple and effective operation of the sprinkling assembly according to the invention is therefore readily understood in the light of the description given above.
- Assuming that
nozzles 1a are oriented to rotatesprinkler 1 clockwise (as seen from above), it follows thattooth 4a at each rotation causes a partial counter-clockwise rotation of thetoothed wheel 9. The number of rotations ofsprinkler 1 corresponding to a complete rotation of thetoothed wheel 9 is obviously defined by the transmission ratio between saidmembers ring 4 and thetoothed wheel 9 could have a different number of teeth so as to obtain a different transmission ratio. - Consider to start from the position of
Fig.6 where opening 10a ofshutter 10 has just arrived into alignment with opening 7a ofchamber 7. In this position the water flows intoduct 8a and reachesnozzles 2a generating jets that cause a counter-clockwise oscillation of thesecondary sprinkler 2, as indicated by the arrow inFig.5 .Sprinkler 2 thus reaches the position indicated in broken lines inFig.5 , defined by and end stop, and along itspath nozzles 2a sprinkle the rear portion of the wash tank not covered by the nozzles of theprimary sprinkler 1. - Since in the illustrated example the transmission ratio between
sprinkler 1 and thetoothed wheel 9 is 12:1, upon the following rotation ofsprinkler 1 thetoothed wheel 9 will rotate through 30° and the same applies to shutter 10 integral therewith. Therefore opening 10a will no longer be aligned with opening 7a thus stopping the jets emitted fromnozzles 2a, and the same applies for the following rotation through 30° during which opening 10a is still along the wall ofchamber 7 betweenopenings - At the third rotation through 30°, opening 10a arrives at opening 7b whereby the water can flow into
duct 8b and reachnozzles 2b generating jets that cause a clockwise oscillation opposite to the preceding one, thus taking thesecondary sprinkler 2 back to the position ofFig.5 . This position is obviously also defined by an end stop and along thepath nozzles 2b sprinkle the rear portion of the wash tank. - The oscillating cycle of the
secondary sprinkler 2 is completed with a similar back-and-forth oscillatory movement when the following rotations ofshutter 10 take opening 10a into alignment first with opening 7c and then with opening 7d, whereby the water is emitted fromnozzles primary sprinkler 1. - Therefore it is clear how this simple structural arrangement allows to oscillate the
secondary sprinkler 2 only every three rotations of theprimary sprinkler 1, and it is also clear that it is sufficient to change the number of teeth ofwheel 9 and/or ofring 4 to change said oscillating frequency. Moreover, if one desires to extend the pushing and sprinkling time of theend nozzles openings chamber 7 remains in communication with therespective duct primary sprinkler 1. - Similarly, the rotating
shutter 10 could be provided with a second opening 10a diametrically opposite to the first opening illustrated above so as to putchamber 7 in communication simultaneously with the two arms, i.e. withducts ducts secondary sprinkler 2. - If
support 3 is located not at the center of the rectangular wash tank but at an eccentric position such that theprimary sprinkler 1 arrives close to three sides of the tank, the portion not reached by the wash nozzles is on one side only of the tank. In this case it is possible to adopt the second embodiment illustrated inFig. 7 that is different from the first embodiment in that the secondary sprinkler 2', while still being coaxially pivoted on theprimary sprinkler 1, only has one arm extending beyond the latter with therelevant end nozzles 2a', 2b' fed throughducts 8a', 8b'. - The members defining the oscillating frequency of the secondary sprinkler 2', namely
ring 4, chamber 7',toothed wheel 9 and rotatingshutter 10 may remain the same or be consequently changed, providing a different transmission ratio and/or openings greater in number and/or larger in size. When retaining the same members of the first embodiment it is obvious that the oscillating frequency of the secondary sprinkler 2' is reduced by half. - It is clear that the number of nozzles of
sprinklers secondary sprinkler 2, 2' could also have "uncontrolled" ducts, i.e. ducts constantly in communication with the supply duct, provided with simple wash nozzles that continuously sprinkle without affecting the oscillation. - Finally, it should be noted that the illustrated embodiments relating to a sprinkling assembly located at the bottom of the tank under the bottom rack are mere examples, since the same structure can be similarly applied in other ways. For example, the sprinkling assembly can be located also above the top rack by turning it upside down, since in that
case support 3 extends downwards from the tank ceiling and the sprinkling takes place from above, or below the top rack by swapping the positions of the primary and secondary sprinklers since in thatcase support 3 extends downwards from the top rack and the sprinkling takes place from below.
Claims (6)
- A sprinkling assembly for dishwashers including a primary revolving sprinkler (1) centrally pivoted on a support (3) through which water under pressure is fed, characterized in that it further includes a secondary oscillating sprinkler (2; 2') coaxially pivoted on said primary sprinkler (1) and provided with at least one arm having such a length as to project beyond the primary sprinkler (1), said at least one arm being provided with opposite wash and propulsion nozzles (2a, 2b, 2c, 2d; 2a', 2b') located in the end portion(s) projecting beyond the primary sprinkler (1), and in that the emission of water jets from said wash and propulsion nozzles (2a, 2b, 2c, 2d; 2a', 2b') is controlled by a rotating shutter (10) provided with at least one opening (10a), the rotation of said rotating shutter (10) being controlled by the rotation of the primary sprinkler (1) according to a transmission ratio greater then unity.
- A sprinkling assembly according to claim 1, characterized in that the rotation of the shutter (10) is controlled by the primary sprinkler (1) through a lower ring (4) externally provided with at least one tooth (4a) suitable to engage with an adjacent horizontal toothed wheel (9) which is integral with the shutter (10).
- A sprinkling assembly according to claim 1 or 2, characterized in that the shutter (10) is fitted within a cylindrical chamber (7) in which there are formed four lateral openings (7a, 7b, 7c, 7d) that put said cylindrical chamber (7) in communication with four ducts (8a, 8b, 8c, 8d) extending between the chamber (7) and the respective wash and propulsion nozzles (2a, 2b, 2c, 2d).
- A sprinkling assembly according to claim 3, characterized in that the shutter (10) is provided with two diametrically opposite openings (10a) so as to put the chamber (7) in communication simultaneously with two opposite ducts (8a, 8b, 8c, 8d).
- A sprinkling assembly according to any of the preceding claims, characterized in that the secondary sprinkler (2; 2') is pivoted between the primary sprinkler (1) and the support (3).
- A dishwasher with a rectangular wash tank, characterized in that it includes at least one sprinkling assembly according to any of the preceding claims.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11425050T PL2494906T3 (en) | 2011-03-01 | 2011-03-01 | Sprinkling assembly for dishwashers comprising a secondary oscillating sprinkler |
ES11425050T ES2405792T3 (en) | 2011-03-01 | 2011-03-01 | Device for the projection of liquids for dishwashing machines, comprising an oscillating secondary projection device |
EP11425050A EP2494906B1 (en) | 2011-03-01 | 2011-03-01 | Sprinkling assembly for dishwashers comprising a secondary oscillating sprinkler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11425050A EP2494906B1 (en) | 2011-03-01 | 2011-03-01 | Sprinkling assembly for dishwashers comprising a secondary oscillating sprinkler |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2494906A1 true EP2494906A1 (en) | 2012-09-05 |
EP2494906B1 EP2494906B1 (en) | 2013-02-06 |
Family
ID=44118522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11425050A Active EP2494906B1 (en) | 2011-03-01 | 2011-03-01 | Sprinkling assembly for dishwashers comprising a secondary oscillating sprinkler |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2494906B1 (en) |
ES (1) | ES2405792T3 (en) |
PL (1) | PL2494906T3 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106377211A (en) * | 2016-11-10 | 2017-02-08 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine |
CN110859574A (en) * | 2018-08-28 | 2020-03-06 | 佛山市顺德区美的洗涤电器制造有限公司 | Spray arm assembly and washing electric appliance with same |
US11026555B2 (en) | 2015-12-21 | 2021-06-08 | Electrolux Appliances Aktiebolag | Dishwasher comprising a wash arm arrangement |
US11389043B2 (en) | 2017-10-31 | 2022-07-19 | Electrolux Appliances Aktiebolag | Dishwasher spray arm assembly |
US11464391B2 (en) | 2017-10-31 | 2022-10-11 | Electrolux Appliances Aktiebolag | Spray arm assembly |
US11612299B2 (en) | 2017-10-31 | 2023-03-28 | Electrolux Appliances Aktiebolag | Wash arm assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0727176A2 (en) | 1995-02-15 | 1996-08-21 | SMEG S.p.A. | Revolving sprinkling assembly for dishwashers, provided with horizontal reciprocating motion |
EP1201178A1 (en) | 2000-10-27 | 2002-05-02 | Bonferraro S.p.A. | Revolving sprinkling assembly for dishwashers, provided with horizontal reciprocating motion |
-
2011
- 2011-03-01 PL PL11425050T patent/PL2494906T3/en unknown
- 2011-03-01 ES ES11425050T patent/ES2405792T3/en active Active
- 2011-03-01 EP EP11425050A patent/EP2494906B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0727176A2 (en) | 1995-02-15 | 1996-08-21 | SMEG S.p.A. | Revolving sprinkling assembly for dishwashers, provided with horizontal reciprocating motion |
EP1201178A1 (en) | 2000-10-27 | 2002-05-02 | Bonferraro S.p.A. | Revolving sprinkling assembly for dishwashers, provided with horizontal reciprocating motion |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11026555B2 (en) | 2015-12-21 | 2021-06-08 | Electrolux Appliances Aktiebolag | Dishwasher comprising a wash arm arrangement |
CN106377211A (en) * | 2016-11-10 | 2017-02-08 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine |
CN106377211B (en) * | 2016-11-10 | 2023-07-21 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine |
US11389043B2 (en) | 2017-10-31 | 2022-07-19 | Electrolux Appliances Aktiebolag | Dishwasher spray arm assembly |
US11464391B2 (en) | 2017-10-31 | 2022-10-11 | Electrolux Appliances Aktiebolag | Spray arm assembly |
US11612299B2 (en) | 2017-10-31 | 2023-03-28 | Electrolux Appliances Aktiebolag | Wash arm assembly |
CN110859574A (en) * | 2018-08-28 | 2020-03-06 | 佛山市顺德区美的洗涤电器制造有限公司 | Spray arm assembly and washing electric appliance with same |
Also Published As
Publication number | Publication date |
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EP2494906B1 (en) | 2013-02-06 |
ES2405792T3 (en) | 2013-06-03 |
PL2494906T3 (en) | 2013-07-31 |
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