EP3120747A1 - Washing system for a dishwasher, and dishwasher with such a washing system - Google Patents
Washing system for a dishwasher, and dishwasher with such a washing system Download PDFInfo
- Publication number
- EP3120747A1 EP3120747A1 EP16180467.9A EP16180467A EP3120747A1 EP 3120747 A1 EP3120747 A1 EP 3120747A1 EP 16180467 A EP16180467 A EP 16180467A EP 3120747 A1 EP3120747 A1 EP 3120747A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elements
- axis
- rotation
- washing system
- discharge
- 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
- 238000005406 washing Methods 0.000 title claims abstract description 110
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 230000005855 radiation Effects 0.000 claims description 10
- 238000004851 dishwashing Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005507 spraying Methods 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
- A47L15/42—Details
- A47L15/4278—Nozzles
Definitions
- the present invention relates to a washing system for a dishwasher and a dishwasher, which is equipped with such a washing system.
- a washing system is typically designed in the form of so-called washing arms, which are acted upon by a fluid medium, usually a cleaning liquid, wherein the fluid medium is then discharged via discharge elements, in particular nozzles, and passed onto the dishes to be cleaned.
- a fluid medium usually a cleaning liquid
- a dishwasher comprises at least one such washing system, but typically several such washing systems or washing arms are placed at different locations in the dishwasher, particularly below and / or above the positions in the dishwasher in which dishes are being positioned for cleaning, for example in corresponding washing baskets.
- a washing system or washing arm is movably mounted, wherein the washing system or the washing arm usually performs a rotational movement about an axis of rotation during operation, so that a washing system or a washing arm covers a certain area within the dishwasher.
- Such a watch system is for example from the DE 10 2012 104 026 A1 known.
- This document discloses a washing system and a dishwasher with a washing system, wherein the dishwasher comprises a plurality of washing systems or washing arms, which are each rotated about an axis of rotation.
- a washing arm for a cleaning machine for cleaning medical and pharmaceutical utensils is known in which the nozzles are formed on both halves of the washing arm so that they are directed in the same direction.
- a dishwashing machine comprising a washing arm having a non-rectilinear main axis with a bend formed to change the direction of flow of the liquid being transported within the washing arm to produce a change in direction To exert pressure on the rinsing arm, so that it is driven in the direction of rotation.
- a further wash arm is known, are arranged on the different spray nozzles, wherein at least a portion of the spray nozzles are adjustable or coverable, so that the individual spray nozzles can also be activated or deactivated, so that the wash arm can be adjusted depending on the loading condition of a dishwasher ,
- a washing system for a dishwasher comprising a wash arm rotatable about a rotation axis R, the wash arm including at least one wash arm segment extending from the rotation axis R.
- the at least one washing arm segment comprises a plurality of dispensing elements for dispensing a fluid medium, wherein according to the invention each washing arm segment comprises at least three dispensing elements, ie comprising a total of N dispensing elements, with N ⁇ 3.
- the individual delivery elements of a greedarmsegments are arranged at different positions of the Wascharmsegments, in such a way that a connecting line between the rotation axis R and a first discharge element A 1 of at least one greedarmsegments having the shortest distance r 1 of all the discharge elements A n this greedarmsegments to the axis of rotation , with a connecting line between the axis of rotation R and another discharge element A n of the same Wascharmsegments forms an internal angle ⁇ n .
- the position of a delivery element A n is therefore determined firstly by its distance r n from the axis of rotation R and secondly by an angular position relative to an angular position of the delivery element A 1 having the shortest distance r 1 of all delivery elements, so that each one Delivery element A n a distance r n from the rotation axis R and an internal angle ⁇ n is assigned.
- an associated interior angle ⁇ n is greater than an interior angle ⁇ n-1 of another delivery element A n-1 of the same wash arm segment, if the distance r n of the delivery element A n from the rotation axis R is greater than the distance r n-1 of the output element A n-1 from the rotation axis R.
- connection line between the rotation axis R and a first output element and a connection line between the rotation axis R and a second output element on the same washer segment, which therefore intersect in the rotation axis R two angles can be defined, which differ from their amount, if the two discharge elements are not arranged so that the two connecting lines extend in parallel.
- an internal angle within the meaning of the invention always means the smaller of these two angles.
- a washing system with dispensing elements arranged in this way has the advantage that the dispensing elements are optimally arranged, so that on the one hand sufficient and good coverage of the areas of the dishwasher in which dishes are positioned for cleaning is ensured, while at the same time ensuring that one Overlapping the delivery areas of the individual delivery elements, typically dispensing cone, greatly reduced and preferably completely avoided, at least up to a certain distance from the dispensing elements, which is relevant for flushing the dishes to be inserted into the dishwasher, in particular the distance of the dispensing elements to the positions in which typically the items to be washed are positioned in the dishwasher, for example in corresponding Waschlcörben.
- the washing system therefore provides an optimized distribution of the dispensing elements on a washing arm segment, moreover, such an arrangement of dispensing elements in a Wascharmsegment also has the advantage that a flow optimization in the supply of the fluid medium is realized within a feed channel within the Wascharmsegments that that leads to an overflow of Nozzle is greatly reduced by the fluid medium within the feed channel.
- a particularly low-loss system is made available which thus saves energy; on the other hand, the constancy and the quality of the delivery of the fluid medium are improved by the delivery elements.
- the washing system of the present invention provides a flow-optimized and thus energy-efficient system which, moreover, with less effort, in particular with lower energy expenditure, delivers improved rinsing results.
- all dispensing elements are arranged on one side of the washing system, namely on the side facing the dishes.
- a washing system which has discharge elements on both sides, that is to say above and below, for example when a washing system is arranged so that items to be washed can be arranged both above and below the washing system.
- the discharge elements are arranged on a greedarmsegment so that an inner angle ⁇ max for the delivery element A max , which has on the Wascharmsegment the greatest distance r max of all delivery elements of this Wascharmsegments from the axis of rotation R, at least 60 °.
- this angle ⁇ max is preferably at least 80 °.
- the angle ⁇ max is in a range of 60 ° to 80 °.
- the dispensing elements are arranged on a greedarmsegment so that a difference between two inner angles ⁇ n and ⁇ n-1 for two different delivery elements A n and A n-1 on a greedarmsegment is at least 2 °. In particularly preferred embodiments, the difference is even at least 3 ° or even at least 5 °.
- the difference between two internal angles is always at least 2 °, but in at least some other delivery elements the difference is greater, for example at least 3 ° or at least 5 °, so that differences between two internal angles between "adjacent" delivery elements, ie between two discharge elements, which have the least difference in terms of their distance r from the axis of rotation R, always be at least 2 °, but in some cases also larger.
- the delivery elements A n on a Wascharmsegment are preferably in each case at different distances r n from the rotation axis R. arranged, which allows a particularly preferred distribution of the dispensing elements in the radial direction and therefore enhances the above effects.
- the wash arm comprises at least two Wascharmsegmente extending from the axis of rotation R in different directions, wherein preferably exactly two Wascharmsegmente are provided which extend from the axis of rotation R in different directions, in particular in opposite directions.
- the wash arm represents a particularly preferred weight distribution about the axis of rotation R, which is favorable for the rotational movement.
- the distribution and the interaction of the delivery elements is supported on the individual Wascharmsegmente in a particularly advantageous manner, so that a good rinsing result can be achieved.
- the washing system is formed so that a cross section of the washing arm is formed in a plane perpendicular to the rotation axis R is substantially S-shaped.
- the washing arm for example, in a plan view, that is, in a view of the wash arm in the direction of the axis of rotation, S-shaped.
- the wash arm S-shaped or in the form of an inverse or mirror-like S is formed.
- Such a design of the washing arm causes the washing arm, taking into account the special arrangement of the dispensing elements according to this invention, can be produced with low material costs and thus with low weight.
- the internal angle ⁇ max for the delivery element A max which has the largest distance r max on a Wascharmsegment, is very large, for example 40 ° or more
- this plays an increased role which is particularly clear in that the (imaginary) connecting line between the axis of rotation R and the delivery element A max , seen in plan view, that is to say in the direction of the axis of rotation R, largely extends over areas runs, which are not above or below the Wascharmsegment, ie in this area no material of the Wascharmsegments is present, which reduces the total weight.
- the number of the dispensing element and / or the position of the dispensing elements on a wash arm segment is different than the number and / or position of dispensing elements on another wash arm segment of the washing system.
- the individual Wascharmsegmente with respect to the distance r n and the inner angle ⁇ n are formed identical, however, a different arrangement of the discharge elements on individual Wascharmsegmenten causes the items to be washed by each of the Wascharmsegmente different with the fluid medium is applied, which further improves the rinsing result.
- each wash arm segment comprises a feed channel formed as a cavity for receiving a fluid medium and for delivering the fluid medium to the dispensing elements, wherein the feed channel is configured such that the cross section of the feed channel is in a plane perpendicular to a tangent of a centerline of the feed line Wascharmsegments with increasing distance from the rotation axis R tapers.
- the taper can be continuous, but it is also possible that a gradual taper is provided, it is also possible that the taper is partially continuous and partly via steps.
- the center line is to be understood as a line which, in a plan view of the washing system in the direction of the axis of rotation R, extends from the axis of rotation R in a plane perpendicular to the axis of rotation R in both directions of the extension Wascharmsegmente extends so that the distance between the center line to a front edge of the Whyarmsegments is the same as the distance of the center line to a rear edge of the Wascharmsegments.
- the center line therefore divides the Whyarmsegmente, with respect to a cross-sectional plane or viewing plane which is perpendicular to the axis of rotation R, in two substantially equal parts.
- This embodiment has the advantage that as uniform as possible flow velocities are generated, so that turbulences within the feed channel are largely avoided.
- the taper of the feed channel is formed with increasing distance from the axis of rotation to an extent substantially proportional to the decrease in a volume flow of the fluid medium with increasing distance from the axis of rotation caused by the delivery of the fluid through the delivery elements ,
- This ensures particularly effective that the flow rate within the feed channel remains largely constant.
- the resulting avoidance or at least reduction of turbulence on the one hand leads to the fact that the washing system is energetically more favorable, moreover, that the discharge characteristic of the delivery elements can be controlled and maintained particularly accurately, furthermore very small fluctuations of the discharge characteristic arise.
- all of the dispenser elements of the wash arm segment are disposed in a region from a centerline of the wash arm segment to a side boundary of the wash arm segment which is forward in the direction of rotation of the wash arm or in the direction of movement of a wash arm segment.
- This arrangement of the dispensing elements in an edge region has, in particular, the effect of further reducing an overflow of the dispensing elements by the fluid medium in the feed channel, which further improves the energy efficiency and the desired dishwashing result.
- the discharge elements are formed as nozzles, wherein furthermore preferably at least not all nozzles of a Whyarmsegments or a washing system have the same emission characteristics.
- the emission characteristic of a nozzle can be influenced on the one hand by the spatial positioning and the position of the nozzle.
- the radiation region which is typically a radiation cone or a radiation fan, may be substantially rotationally symmetrical, it may also not be rotationally symmetrical. so that a rotation of the nozzle around its axes changes the emission characteristics.
- a selection of different radiation characteristics of nozzles therefore makes it possible, in connection with the particular positioning of the dispensing elements on a washing arm segment, to ensure good coverage of the various areas of the dishwasher, for example also to arrange dispensing elements more densely, nevertheless overlapping the irradiation areas and negatively influencing each other Avoid radiation, which would be caused by it.
- the dispensing elements are arranged more densely in an outer region of the Wascharmsegments than in an inner region of the Whyarmsegments. This is preferred because due to the rotational movement of the washing system during the flushing operation, the radially outer regions must cover a larger area and a larger area than the radially inner areas. In this way, a uniformly good dishwashing result is achieved, regardless of where in the dishwasher the dishes are located, for example in an outer area of a washing basket or in an inner area.
- Such compaction of delivery elements in an outer region can be provided for both a single Wascharmsegment, but a compression in an outer region is particularly preferred in terms of several, cooperating Wascharmsegmente or an entire washing system with different Wascharmsegmenten.
- At least one dispensing element A n is formed and arranged on a Wascharmsegment that a Schoabstrahlraum or a central axis of the dispensing area is tilted relative to the axis of rotation R by an angle ( ⁇ 1 ).
- At least two dispensing elements A n are formed as nozzles on a washing arm segment, the nozzles each having an elongate dispensing opening so as to define a longitudinal axis of each dispensing opening extending in the direction of the longest extension of the dispensing opening wherein the two dispensing elements are arranged so that the longitudinal axes of the two dispensing elements are not parallel to one another and a longitudinal axis of at least one dispensing opening is such that it or its extension does not intersect the axis of rotation R.
- the present invention also relates to a dishwasher, in particular a commercial dishwasher, comprising at least one washing system according to one of the preceding claims.
- a dishwasher generally comprises a plurality of washing systems, which are preferably arranged below and / or above, for example, washing baskets in which items to be washed can be inserted inside a dishwasher.
- a particularly preferred dishwashing machine comprises, for example, two rinse baskets, wherein a first washing system is arranged under a lower rinsing basket, while a second washing system is arranged between the two rinsing baskets, and where appropriate additionally a further washing system is arranged above the upper rinsing basket.
- the washing system which is arranged under the lower washing basket, so that items to be washed can be positioned only above the washing system, dispensing elements, in particular nozzles, only on its upper side.
- a washing system that is arranged so that items to be washed can only be positioned under this washing system in the dishwasher, dispensing elements only on its underside. Washing systems arranged so that items to be washed can be positioned both above and below preferably have delivery elements both on the top side and on the bottom side.
- FIGS. 1 to 3 show an embodiment of a washing system 10 according to the invention, wherein the washing system shown comprises a total of two Wascharmsegmente.
- the washing system 10 is designed so that it can be rotated about an axis of rotation R when it is installed and operated in a dishwasher, in particular in a commercial dishwasher.
- the two Wascharmsegmente 100 of the washing system 10 are, in the view of FIGS. 1 to 3 , formed as an inverse S or question mark.
- the discharge elements A n are arranged only on one side, namely on the after installation of the washing system in a dishwasher facing the items to be washed.
- the delivery element which has the smallest distance to the rotation axis R on a wash arm segment 100, is referred to as delivery element A 1
- the delivery element having the greatest distance from the rotation axis R is referred to as delivery element A max (in the illustrated embodiment also delivery element A 10 ). That in the FIGS. 1 to 3 shown washing system 10 rotates when properly installed in a dishwasher, in the view shown in the figures, in a clockwise direction.
- each Wascharmsegments 100 which is in the direction of rotation or direction of rotation of the washing system 10 or in the direction of movement of Wascharmsegments 100 front, is therefore referred to as the front lateral boundary 120, while the lateral boundary, in the direction of rotation or direction of rotation of the washing system or in the direction of movement of Wascharmsegements behind is, as the rear side boundary 140 of the respective Wascharmsegments 100 is designated.
- Fig. 2 illustrates in particular the positioning of the discharge elements A n on the Wascharmsegmenten 100 and explains the inner angle ⁇ n .
- each Wascharmsegment 100 comprises a total of 10 dispensing elements A 1 to A 10 , wherein the dispensing element A 1 is the dispensing element having the smallest distance r 1 from the axis of rotation R, while the dispensing element A 10 (corresponding to the dispensing element A max ) is the dispensing element that has the greatest distance from the axis of rotation R.
- a connecting line between the rotation axis R and a delivery element forms an inner angle ⁇ with a connecting line between the rotation axis R and another delivery element.
- the inner angle ⁇ 5 is shown, which corresponds to the angle which, at the axis of rotation R, between a connecting line extending from the axis of rotation R to the discharge element A 1 and a connecting line extending between the axis of rotation R and the discharge element A 5 extends is formed.
- an inner angle ⁇ 2 is shown, which corresponds to the angle which, at the axis of rotation R, between a connecting line extending from the axis of rotation R to the discharge element A 1 and a connecting line extending between the axis of rotation R and the delivery element A 2 extends is formed.
- the position of the delivery element A 1 which has the smallest distance to the rotation axis R, is therefore defined by the distance r 1 , while the relative positioning of all other delivery elements A n is defined relative to the first delivery element A 1 , by the respective distance to the rotation axis R. , namely r n , and by the corresponding internal angle ⁇ n .
- the internal angle ⁇ 1 which is assigned to the first output element A 1 , always 0 °.
- the position of the delivery element A max which has the greatest distance from the axis of rotation R, therefore defines the internal angle ⁇ max .
- the wash arm segment 100 incorporated in FIG Fig. 2 on the left side, a total of 10 discharge elements, and the discharge element A 10 A max , which has the greatest distance from the axis of rotation R, includes an internal angle ⁇ max , which, in this embodiment, is greater than 60 °, and in this embodiment is between 61 ° and 62 °.
- the inner angle ⁇ max of the Wascharmsegments 100, the in Fig. 2 is shown on the right side is greater than 75 ° and in this embodiment is about 80 °.
- FIG. 12 is a view showing a centerline 130 for each of the wash arm segments 100.
- the center line is determined in a plan view or alternatively in a bottom view, ie in a view parallel to the axis of rotation R, in this view, the center line is arranged so that the distance of the center line, in a plane perpendicular to the axis of rotation R, in which the When viewed from a centerline, the front side boundary 120 of the wash arm segment is exactly the same as the distance to a rear lateral boundary 140 of the wash arm segment 100.
- all dispensing elements A n are in the form of nozzles, the nozzles having an elongated dispensing opening so as to define a longitudinal axis of each dispensing opening extending along the longest extent of the dispensing openings.
- the dispensing elements formed as nozzles are configured and arranged such that, on each of the wash arm segments 100, the longitudinal axes of the dispensing openings of most dispensing elements A n extend to intersect the axis of rotation R.
- two delivery elements namely in each case the discharge elements A 7 and A 9 , formed so that the longitudinal axes or their extensions do not intersect the axis of rotation R, but the longitudinal axis of the discharge element A 7 to such an arrangement in about 45th ° rotated while the longitudinal axis of the discharge opening of the discharge element A 9 is rotated relative to such an orientation in about 90 °.
- FIG. 4 shows a partial cross section through a Wascharmsegment a washing system according to the invention, wherein the partial cross section is guided through a portion of the Wascharmsegments in which a discharge element A n is provided, which is formed in this embodiment as a nozzle.
- the nozzle is formed so as to have a radiating area which has substantially the shape of a cone, the opening angle of the cone being designated by ⁇ 1 .
- the opening angle ⁇ 1 can be identical for all delivery elements A n arranged on a wash arm segment 100, but the opening angle can vary from nozzle to nozzle or even at a nozzle depending on the sectional plane. Preferred opening angles are in a range of 30 ° to 80 °, in particular in a range of 50 ° to 70 °. When in the FIG. 4 shown embodiment, the opening angle ⁇ 1 is almost 60 °.
- the dispensing device A n is formed in this embodiment so that a central axis of the opening cone or a main emission direction of the delivery region is substantially perpendicular, ie parallel to the axis of rotation R.
- Fig. 5 shows another partial cross section through a Wascharmsegment 100 of a washing system 10 according to the invention, wherein in this cross section also a discharge element A n is provided.
- This discharge element A n also has a substantially cone-shaped delivery region, wherein the cone has an opening angle of ⁇ 2 , which, in this embodiment, is the same size as ⁇ 1 , but in other embodiments can also be different from ⁇ 1 .
- Fig. 5 it can be seen, however, is a central axis of the opening cone or the Abstrahlkegels or a main emission of the dispensing area relative to the vertical, ie relative to the rotation axis R, tilted, by an angle ⁇ 1 , which is about 30 ° in this embodiment.
- the radiation characteristics of the output elements A n can vary from one another, both by changes in the opening angle ⁇ 1 , ⁇ 2 , and by changing the angle ⁇ 1 , at an angle relative to the rotation axis R, of course, the nozzles also relative to the central axis 180 can be rotated, which also changes the radiation characteristic at non-symmetrical radiation areas of the nozzle.
Abstract
Die vorliegende Erfindung betrifft ein Waschsystem (10) für eine Geschirrspülmaschine. Das erfindungsgemäße Waschsystem umfasst mindestens ein Wascharmsegment (100), das eine Anzahl von Abgabeelementen (A) zur Abgabe eines fluiden Mediums umfasst, wobei jedes Wascharmsegment mindestens drei Abgabeelemente aufweist. Die Abgabeelemente sind sowohl im Hinblick auf ihren Abstand zu einer Drehachse (R) des Waschsystems als auch im Hinblick auf eine Winkelposition innerhalb einer Ebene senkrecht zu der Drehachse des Waschsystem definiert angeordnet. Die Erfindung betrifft ferner eine Geschirrspülmaschine mit solch einem Waschsystem.The present invention relates to a washing system (10) for a dishwasher. The washing system according to the invention comprises at least one washing arm segment (100) comprising a number of dispensing elements (A) for dispensing a fluid medium, each washing arm segment having at least three dispensing elements. The dispensing elements are arranged both in terms of their distance from a rotational axis (R) of the washing system and with respect to an angular position within a plane defined perpendicular to the axis of rotation of the washing system. The invention further relates to a dishwasher with such a washing system.
Description
Die vorliegende Erfindung betrifft ein Waschsystem für eine Geschirrspülmaschine und eine Geschirrspülmaschine, die mit einem solchen Waschsystem ausgestattet ist.The present invention relates to a washing system for a dishwasher and a dishwasher, which is equipped with such a washing system.
Ein Waschsystem ist typischerweise in der Form von sogenannten Wascharmen ausgebildet, die mit einem fluiden Medium, in der Regel einer Reinigungsflüssigkeit, beaufschlagt werden, wobei das fluide Medium dann über Abgabeelemente, insbesondere Düsen, abgegeben und auf das zu reinigende Geschirr geleitet wird.A washing system is typically designed in the form of so-called washing arms, which are acted upon by a fluid medium, usually a cleaning liquid, wherein the fluid medium is then discharged via discharge elements, in particular nozzles, and passed onto the dishes to be cleaned.
Eine Geschirrspülmaschine umfasst mindestens ein solches Waschsystem, typischerweise werden aber mehrere solcher Waschsysteme oder Wascharme an verschiedenen Stellen in der Geschirrspülmaschine angeordnet, insbesondere unter und/oder über den Positionen in der Geschirrspülmaschine, in denen Geschirr zur Reinigung positioniert wird, beispielsweise in entsprechenden Waschkörben.A dishwasher comprises at least one such washing system, but typically several such washing systems or washing arms are placed at different locations in the dishwasher, particularly below and / or above the positions in the dishwasher in which dishes are being positioned for cleaning, for example in corresponding washing baskets.
Ein Waschsystem bzw. Wascharm ist beweglich gelagert, wobei das Waschsystem bzw. der Wascharm während des Betriebs üblicherweise eine Drehbewegung um eine Rotationsachse ausführt, so dass ein Waschsystem bzw. ein Wascharm einen bestimmten Flächenbereich innerhalb der Geschirrspülmaschine abdeckt.A washing system or washing arm is movably mounted, wherein the washing system or the washing arm usually performs a rotational movement about an axis of rotation during operation, so that a washing system or a washing arm covers a certain area within the dishwasher.
Ein solches Wachsystem ist beispielsweise aus der
Aus der
Aus der
Aus der
Aus der
Basierend auf dem oben genannten Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, ein optimiertes Waschsystem zur Verfügung zu stellen, das besonders effektiv arbeitet und möglichst zuverlässig gute Spülerfolge erzielt.Based on the above-mentioned prior art, it is an object of the present invention to provide an optimized washing system which works particularly effectively and achieves as good as possible a reliable washing sequence.
Diese Aufgabe wird durch ein Waschsystem für eine Geschirrspülmaschine, insbesondere für eine gewerbliche Geschirrspülmaschine, gemäß Anspruch 1, und eine Geschirrspülmaschine, insbesondere eine gewerbliche Geschirrspülmaschine, nach Anspruch 15 gelöst. Die Ansprüche 2 bis 14 betreffen besonders vorteilhafte Ausführungsformen eines Waschsystems gemäß Anspruch 1.This object is achieved by a washing system for a dishwasher, in particular for a commercial dishwasher, according to claim 1, and a dishwasher, in particular a commercial dishwasher, according to claim 15. The claims 2 to 14 relate to particularly advantageous embodiments of a washing system according to claim 1.
Gemäß der Erfindung wird ein Waschsystem für eine Geschirrspülmaschine zur Verfügung gestellt, das einen Wascharm umfasst, der um eine Drehachse R drehbar ist, wobei der Wascharm mindestens ein Wascharmsegment umfasst, das sich von der Drehachse R aus erstreckt. Das mindestens eine Wascharmsegment umfasst mehrere Abgabeelemente zur Abgabe eines fluiden Mediums, wobei gemäß der Erfindung jedes Wascharmsegment mindestens drei Abgabeelemente umfasst, d.h. insgesamt eine Anzahl N von Abgabeelementen umfasst, mit N ≥ 3. Jedes der Abgabeelemente ist mit Abstand von der Drehachse R angeordnet, so dass jedem Abgabeelement An ein zugehöriger Abstand rn zugewiesen ist, wobei dies für alle Abgabeelemente gilt, so dass n in einem Bereich von 1-N liegt (n = 1...N).According to the invention, there is provided a washing system for a dishwasher comprising a wash arm rotatable about a rotation axis R, the wash arm including at least one wash arm segment extending from the rotation axis R. The at least one washing arm segment comprises a plurality of dispensing elements for dispensing a fluid medium, wherein according to the invention each washing arm segment comprises at least three dispensing elements, ie comprising a total of N dispensing elements, with N ≥ 3. Each of the dispensing elements is spaced from the axis of rotation R, such that each delivery element A n is assigned an associated distance r n , this applies to all delivery elements, so that n lies in a range of 1-N (n = 1... N).
Die einzelnen Abgabeelemente eines Wascharmsegments sind auf unterschiedlichen Positionen des Wascharmsegments angeordnet, und zwar so, dass eine Verbindungslinie zwischen der Drehachse R und einem ersten Abgabeelement A1 des mindestens einem Wascharmsegments, das den kürzesten Abstand r1 aller Abgabeelemente An dieses Wascharmsegments zur Drehachse aufweist, mit einer Verbindungslinie zwischen der Drehachse R und einem anderen Abgabeelement An des selben Wascharmsegments einen Innenwinkel αn bildet.The individual delivery elements of a Wascharmsegments are arranged at different positions of the Wascharmsegments, in such a way that a connecting line between the rotation axis R and a first discharge element A 1 of at least one Wascharmsegments having the shortest distance r 1 of all the discharge elements A n this Wascharmsegments to the axis of rotation , with a connecting line between the axis of rotation R and another discharge element A n of the same Wascharmsegments forms an internal angle α n .
Die Position eines Abgabeelements An wird daher zum einen durch seinen Abstand rn von der Drehachse R und zum anderen von einer Winkelposition, relativ zu einer Winkelposition des Abgabeelements A1, das den kürzesten Abstand r1 aller Abgabeelemente aufweist, bestimmt, so dass jedem Abgabeelement An ein Abstand rn von der Drehachse R und ein Innenwinkel αn zugeordnet ist.The position of a delivery element A n is therefore determined firstly by its distance r n from the axis of rotation R and secondly by an angular position relative to an angular position of the delivery element A 1 having the shortest distance r 1 of all delivery elements, so that each one Delivery element A n a distance r n from the rotation axis R and an internal angle α n is assigned.
Gemäß der Erfindung gilt für jedes Abgabeelement An eines Wascharmsegments, dass ein zugehöriger Innenwinkel αn größer ist als ein Innenwinkel αn-1 eines anderen Abgabeelements An-1 des selben Wascharmsegments, wenn der Abstand rn des Abgabeelements An von der Drehachse R größer ist als der Abstand rn-1 des Abgabeelements An-1 von der Drehachse R.According to the invention, for each delivery element A n of a wash arm segment, an associated interior angle α n is greater than an interior angle α n-1 of another delivery element A n-1 of the same wash arm segment, if the distance r n of the delivery element A n from the rotation axis R is greater than the distance r n-1 of the output element A n-1 from the rotation axis R.
In diesem Zusammenhang ist darauf hinzuweisen, dass im Hinblick auf zwei Verbindungslinien, einer Verbindungslinie zwischen der Drehachse R und einem ersten Abgabeelement und einer Verbindungslinie zwischen der Drehachse R und einem zweiten Abgabeelement auf demselben Wascharmsegment, die sich daher in der Drehachse R schneiden, zwei Winkel definiert werden können, die sich von ihrem Betrag unterscheiden, wenn die beiden Abgabeelemente nicht so angeordnet sind, dass sich die beiden Verbindungslinien parallel erstrecken. Unter einem Innenwinkel im Sinne der Erfindung ist jedoch immer der kleinere dieser beiden Winkel zu verstehen.In this connection, it should be noted that, with respect to two connection lines, a connection line between the rotation axis R and a first output element and a connection line between the rotation axis R and a second output element on the same washer segment, which therefore intersect in the rotation axis R, two angles can be defined, which differ from their amount, if the two discharge elements are not arranged so that the two connecting lines extend in parallel. However, an internal angle within the meaning of the invention always means the smaller of these two angles.
Ein Waschsystem mit solchermaßen angeordneten Abgabeelementen hat den Vorteil, dass die Abgabeelemente optimal angeordnet sind, so dass zum einen eine ausreichende und gute Abdeckung der Bereiche der Geschirrspülmaschine, in denen Geschirr zur Reinigung positioniert wird, gewährleistet ist, während gleichzeitig sichergestellt werden kann, dass ein Überschneiden der Abgabebereiche der einzelnen Abgabeelemente, typischerweise Abgabekegel, stark vermindert und bevorzugt vollständig vermieden werden kann, zumindest bis zu einem bestimmten Abstand von den Abgabeelementen, der für das Spülen des in die Geschirrspülmaschine einzusetzenden Spülguts relevant ist, insbesondere der Abstand der Abgabeelemente zu den Positionen, in denen typischerweise das Spülgut in der Geschirrspülmaschine positioniert wird, bspw. in entsprechenden Waschlcörben.A washing system with dispensing elements arranged in this way has the advantage that the dispensing elements are optimally arranged, so that on the one hand sufficient and good coverage of the areas of the dishwasher in which dishes are positioned for cleaning is ensured, while at the same time ensuring that one Overlapping the delivery areas of the individual delivery elements, typically dispensing cone, greatly reduced and preferably completely avoided, at least up to a certain distance from the dispensing elements, which is relevant for flushing the dishes to be inserted into the dishwasher, in particular the distance of the dispensing elements to the positions in which typically the items to be washed are positioned in the dishwasher, for example in corresponding Waschlcörben.
Das Waschsystem stellt daher eine optimierte Verteilung der Abgabeelemente auf einem Wascharmsegment zur Verfügung, darüber hinaus hat eine solche Anordnung von Abgabeelementen in einem Wascharmsegment auch den Vorteil, dass eine Strömungsoptimierung bei der Zuführung des fluiden Mediums innerhalb eines Zuführkanals innerhalb des Wascharmsegments realisiert wird, die dazu führt, dass ein Überströmen von Düsen durch das fluide Medium innerhalb des Zuführkanals stark vermindert wird. Dadurch wird zum einen ein besonders verlustarmes System zur Verfügung gestellt, das damit Energie spart, zum anderen werden die Konstanz und die Qualität der Abgabe des fluiden Mediums durch die Abgabeelemente verbessert.The washing system therefore provides an optimized distribution of the dispensing elements on a washing arm segment, moreover, such an arrangement of dispensing elements in a Wascharmsegment also has the advantage that a flow optimization in the supply of the fluid medium is realized within a feed channel within the Wascharmsegments that that leads to an overflow of Nozzle is greatly reduced by the fluid medium within the feed channel. As a result, on the one hand, a particularly low-loss system is made available which thus saves energy; on the other hand, the constancy and the quality of the delivery of the fluid medium are improved by the delivery elements.
Insgesamt stellt daher das Waschsystem der vorliegenden Erfindung ein strömungsoptimiertes und damit energieeffizientes System zur Verfügung, das darüber hinaus bei weniger Aufwand, insbesondere bei geringerem energetischem Aufwand, verbesserte Spülergebnisse liefert.Overall, therefore, the washing system of the present invention provides a flow-optimized and thus energy-efficient system which, moreover, with less effort, in particular with lower energy expenditure, delivers improved rinsing results.
Bevorzugt sind sämtliche Abgabeelemente auf einer Seite des Waschsystems angeordnet, nämlich auf der dem Spülgut zugewandten Seite. In besonderen Fällen ist es jedoch auch möglich, ein Waschsystem vorzusehen, das auf beiden Seiten, also oben und unten, Abgabeelemente aufweist, beispielsweise wenn ein Waschsystem so angeordnet ist, dass sowohl oberhalb als auch unterhalb des Waschsystems Spülgut angeordnet werden kann.Preferably, all dispensing elements are arranged on one side of the washing system, namely on the side facing the dishes. In special cases, however, it is also possible to provide a washing system which has discharge elements on both sides, that is to say above and below, for example when a washing system is arranged so that items to be washed can be arranged both above and below the washing system.
Gemäß der Erfindung sind die Abgabeelemente auf einem Wascharmsegment so angeordnet, dass ein Innenwinkel αmax für das Abgabeelement Amax, das auf dem Wascharmsegment den größten Abstand rmax aller Abgabeelemente dieses Wascharmsegments von der Drehachse R aufweist, mindestens 60° beträgt. Bei einer besonders bevorzugten Ausführungsform beträgt dieser Winkel αmax bevorzugt mindestens 80°. Besonders bevorzugt liegt der Winkel αmax in einem Bereich von 60° bis 80°.According to the invention, the discharge elements are arranged on a Wascharmsegment so that an inner angle α max for the delivery element A max , which has on the Wascharmsegment the greatest distance r max of all delivery elements of this Wascharmsegments from the axis of rotation R, at least 60 °. In a particularly preferred embodiment, this angle α max is preferably at least 80 °. Particularly preferably, the angle α max is in a range of 60 ° to 80 °.
Auf diese Weise wird sichergestellt, dass der oben genannte Effekt besonders gut verwirklicht wird, ferner wird bereits ohne Bewegung bzw. Rotation des Waschsystems bereits ein großer Winkelbereich innerhalb einer Geschirrspülmaschine abgedeckt.In this way, it is ensured that the above-mentioned effect is realized particularly well; furthermore, even without movement or rotation of the washing system, a large angular range is already covered within a dishwasher.
Auch ist es, insbesondere bei der Abdeckung eines besonders großen Winkelbereichs, besonders gut möglich, Abgabeelemente so anzuordnen, dass ein Spülgut bzw. ein bestimmter Bereich eines Spülguts durch verschiedene Abgabeelemente eines einzelnen Wascharmsegments mit dem fluiden Medium beaufschlagt werden, ohne dass sich die Abgabeelemente gegenseitig beeinflussen bzw. sich die Abgabebereiche oder Abgabekegel der Abgabeelemente überschneiden.Also, it is particularly well possible, especially in the cover of a particularly large angle range, to arrange dispensing elements so that a wash ware or a certain Area of a wash ware by different discharge elements of a single Wascharmsegments be subjected to the fluid medium without the discharge elements influence each other or overlap the delivery areas or donation cone of the delivery elements.
Dadurch wird, mit sehr geringem energetischen Aufwand, sichergestellt, dass ein sehr gutes Spülergebnis erzielt werden kann, insbesondere auch weil bereits nach einmaligem Überstreichen eines bestimmten Bereichs innerhalb der Geschirrspülmaschine mit dem einen Wascharmsegment eine Beaufschlagung des Spülguts mittels zweier oder sogar mehrerer Abgabeelemente ermöglicht wird, wobei die mehrfache Beaufschlagung allerdings nicht gleichzeitig und damit sich gegenseitig beeinflussend, sondern, aufgrund der Position und Anordnung der Abgabeelemente auf dem Wascharmsegment, zeitlich versetzt stattfindet.This ensures, with very little energy expenditure, that a very good dishwashing result can be achieved, in particular because even after a single sweep of a certain area within the dishwasher with one Wascharmsegment a loading of the dishes by means of two or even more dispensing elements allows However, the multiple application is not simultaneous and therefore interacting, but, due to the position and arrangement of the discharge elements on the Wascharmsegment, takes place in a staggered manner.
Gemäß einer besonderen Ausführungsform sind die Abgabeelemente auf einem Wascharmsegment so angeordnet, dass eine Differenz zwischen zwei Innenwinkeln αn und αn-1 für zwei unterschiedliche Abgabeelemente An und An-1 auf einem Wascharmsegment mindestens 2° beträgt. Bei besonders bevorzugten Ausführungsformen beträgt die Differenz sogar mindestens 3° oder sogar mindestens 5°.According to a particular embodiment, the dispensing elements are arranged on a Wascharmsegment so that a difference between two inner angles α n and α n-1 for two different delivery elements A n and A n-1 on a Wascharmsegment is at least 2 °. In particularly preferred embodiments, the difference is even at least 3 ° or even at least 5 °.
Bei besonders bevorzugten Ausführungsformen beträgt die Differenz zwischen zwei Innenwinkeln immer mindestens 2°, während jedoch bei zumindest einigen anderen Abgabeelementen die Differenz größer ist, beispielsweise mindestens 3° oder mindestens 5°, so dass Differenzen zwischen zwei Innenwinkeln zwischen "benachbarten" Abgabeelementen, also zwischen zwei Abgabeelementen, die den geringsten Unterschied im Hinblick auf ihren Abstand r von der Drehachse R aufweisen, immer mindestens 2° betragen, in einigen Fällen jedoch auch größer sind.In particularly preferred embodiments, the difference between two internal angles is always at least 2 °, but in at least some other delivery elements the difference is greater, for example at least 3 ° or at least 5 °, so that differences between two internal angles between "adjacent" delivery elements, ie between two discharge elements, which have the least difference in terms of their distance r from the axis of rotation R, always be at least 2 °, but in some cases also larger.
Bei einer weiteren Ausführungsform sind die Abgabeelemente An auf einem Wascharmsegment bevorzugt jeweils in unterschiedlichen Abständen rn von der Drehachse R angeordnet, was eine besonders bevorzugte Verteilung der Abgabeelemente in radialer Richtung ermöglicht und daher die oben genannten Effekte verstärkt.In a further embodiment, the delivery elements A n on a Wascharmsegment are preferably in each case at different distances r n from the rotation axis R. arranged, which allows a particularly preferred distribution of the dispensing elements in the radial direction and therefore enhances the above effects.
Bei einer besonderen Ausführungsform umfasst der Wascharm mindestens zwei Wascharmsegmente, die sich von der Drehachse R aus in unterschiedlichen Richtungen erstrecken, wobei bevorzugt genau zwei Wascharmsegmente vorgesehen sind, die sich von der Drehachse R aus in unterschiedliche Richtungen, insbesondere in entgegengesetzte Richtungen, erstrecken. Dies hat den Vorteil, dass der Wascharm eine besonders bevorzugte Gewichtsverteilung um die Drehachse R darstellt, was für die Rotationsbewegung günstig ist. Auch wird dadurch die Verteilung und das Zusammenwirken der Abgabeelemente auf den einzelnen Wascharmsegmente auf besonders vorteilhafte Weise unterstützt, so dass ein gutes Spülergebnis erzielt werden kann.In a particular embodiment, the wash arm comprises at least two Wascharmsegmente extending from the axis of rotation R in different directions, wherein preferably exactly two Wascharmsegmente are provided which extend from the axis of rotation R in different directions, in particular in opposite directions. This has the advantage that the wash arm represents a particularly preferred weight distribution about the axis of rotation R, which is favorable for the rotational movement. Also, the distribution and the interaction of the delivery elements is supported on the individual Wascharmsegmente in a particularly advantageous manner, so that a good rinsing result can be achieved.
Bevorzugt ist das Waschsystem so ausgebildet, dass ein Querschnitt des Wascharms in einer Ebene senkrecht zur Drehachse R im Wesentlichen S-förmig ausgebildet ist. Dies bedeutet, dass der Wascharm bspw. in einer Draufsicht, also in einer Sicht auf den Wascharm in Richtung der Drehachse, S-förmig ausgebildet ist. In diesem Zusammenhang muss darauf hingewiesen werden, dass je nach Blickrichtung auf einen Wascharm, von unten oder von oben, bzw. je nachdem von welcher Seite der oben genannte Querschnitt betrachtet wird, der Wascharm S-förmig oder aber in Form eines inversen bzw. spiegelförmigen S ausgebildet ist.Preferably, the washing system is formed so that a cross section of the washing arm is formed in a plane perpendicular to the rotation axis R is substantially S-shaped. This means that the washing arm, for example, in a plan view, that is, in a view of the wash arm in the direction of the axis of rotation, S-shaped. In this context, it should be noted that, depending on the direction of looking at a wash arm, from below or from above, or depending on which side of the above cross-section is considered, the wash arm S-shaped or in the form of an inverse or mirror-like S is formed.
Eine solche Ausgestaltung des Wascharms führt dazu, dass der Wascharm, unter Berücksichtigung der speziellen Anordnung der Abgabeelemente gemäß dieser Erfindung, mit geringem Materialaufwand und damit mit geringem Gewicht hergestellt werden kann. Insbesondere in den Fällen, in denen der Innenwinkel αmax für das Abgabeelement Amax, das auf einem Wascharmsegment den größten Abstand rmax aufweist, sehr groß ist, beispielsweise 40° oder mehr beträgt, spielt dies eine erhöhte Rolle, was insbesondere dadurch deutlich wird, dass die (gedachte) Verbindungslinie zwischen der Drehachse R und dem Abgabeelement Amax, in der Draufsicht, also in Richtung der Drehachse R gesehen, weitgehend über Bereiche verläuft, die nicht über bzw. unter dem Wascharmsegment liegen, d.h. in diesem Bereich keinerlei Material des Wascharmsegments vorliegt, was das Gesamtgewicht reduziert.Such a design of the washing arm causes the washing arm, taking into account the special arrangement of the dispensing elements according to this invention, can be produced with low material costs and thus with low weight. In particular, in those cases in which the internal angle α max for the delivery element A max , which has the largest distance r max on a Wascharmsegment, is very large, for example 40 ° or more, this plays an increased role, which is particularly clear in that the (imaginary) connecting line between the axis of rotation R and the delivery element A max , seen in plan view, that is to say in the direction of the axis of rotation R, largely extends over areas runs, which are not above or below the Wascharmsegment, ie in this area no material of the Wascharmsegments is present, which reduces the total weight.
Bei einer besonderen Ausführungsform ist die Anzahl des Abgabeelements und/oder die Position der Abgabeelemente auf einem Wascharmsegment unterschiedlich zu der Anzahl und/oder der Position der Abgabeelemente auf einem anderen Wascharmsegment des Waschsystems. Zwar ist es auch möglich, dass die einzelnen Wascharmsegmente im Hinblick auf den Abstand rn und den Innenwinkel αn identisch ausgebildet sind, allerdings führt eine unterschiedliche Anordnung der Abgabeelemente auf einzelnen Wascharmsegmenten dazu, dass das Spülgut von jedem der Wascharmsegmente unterschiedlich mit dem fluiden Medium beaufschlagt wird, was das Spülergebnis noch weiter verbessert.In a particular embodiment, the number of the dispensing element and / or the position of the dispensing elements on a wash arm segment is different than the number and / or position of dispensing elements on another wash arm segment of the washing system. Although it is also possible that the individual Wascharmsegmente with respect to the distance r n and the inner angle α n are formed identical, however, a different arrangement of the discharge elements on individual Wascharmsegmenten causes the items to be washed by each of the Wascharmsegmente different with the fluid medium is applied, which further improves the rinsing result.
Bei einer besonderen Ausführungsform umfasst jedes Wascharmsegment einen als Hohlraum ausgebildeten Zuführkanal zur Aufnahme eines fluiden Mediums und zur Zuführung des fluiden Mediums zu den Abgabeelementen, wobei der Zuführkanal so ausgebildet ist, dass sich der Querschnitt des Zuführkanals in einer Ebene senkrecht zu einer Tangente einer Mittellinie des Wascharmsegments mit zunehmendem Abstand von der Drehachse R verjüngt. Die Verjüngung kann dabei kontinuierlich erfolgen, es ist allerdings auch möglich, dass eine stufenweise Verjüngung vorgesehen ist, auch ist es möglich, dass die Verjüngung teilweise kontinuierlich und teilweise über Stufen erfolgt. Unter der Mittellinie ist in diesem Sinne dieser Erfindung eine Linie zu verstehen, die sich, in Draufsicht auf das Waschsystem in Richtung der Drehachse R, ausgehend von der Drehachse R in einer Ebene, die senkrecht zur Drehachse R verläuft, in beide Richtungen der Erstreckung der Wascharmsegmente so erstreckt, dass der Abstand der Mittellinie zu einer vorderen Kante des Wascharmsegments genauso groß ist wie der Abstand der Mittellinie zu einer hinteren Kante des Wascharmsegments. Die Mittellinie teilt daher die Wascharmsegmente, im Hinblick auf eine Querschnittsebene oder Betrachtungsebene, die senkrecht zur Drehachse R verläuft, in zwei weitgehend gleichgroße Teilbereiche.In a particular embodiment, each wash arm segment comprises a feed channel formed as a cavity for receiving a fluid medium and for delivering the fluid medium to the dispensing elements, wherein the feed channel is configured such that the cross section of the feed channel is in a plane perpendicular to a tangent of a centerline of the feed line Wascharmsegments with increasing distance from the rotation axis R tapers. The taper can be continuous, but it is also possible that a gradual taper is provided, it is also possible that the taper is partially continuous and partly via steps. In the sense of this invention, the center line is to be understood as a line which, in a plan view of the washing system in the direction of the axis of rotation R, extends from the axis of rotation R in a plane perpendicular to the axis of rotation R in both directions of the extension Wascharmsegmente extends so that the distance between the center line to a front edge of the Wascharmsegments is the same as the distance of the center line to a rear edge of the Wascharmsegments. The center line therefore divides the Wascharmsegmente, with respect to a cross-sectional plane or viewing plane which is perpendicular to the axis of rotation R, in two substantially equal parts.
Diese Ausgestaltung hat den Vorteil, dass möglichst gleichmäßige Strömungsgeschwindigkeiten erzeugt werden, sodass Turbulenzen innerhalb des Zuführkanals weitgehend vermieden werden.This embodiment has the advantage that as uniform as possible flow velocities are generated, so that turbulences within the feed channel are largely avoided.
Bevorzugt ist die Verjüngung des Zuführkanals mit zunehmenden Abstand von der Drehachse in einem Ausmaß ausgebildet, das im Wesentlichen proportional zur Abnahme eines Volumenstroms des fluiden Mediums, mit zunehmendem Abstand von der Drehachse, ist, die durch die Abgabe des fluiden Mediums durch die Abgabeelemente hervorgerufen wird. Dadurch wird besonders effektiv sichergestellt, dass die Strömungsgeschwindigkeit innerhalb des Zuführkanals weitgehend konstant bleibt. Die dadurch hervorgerufene Vermeidung oder zumindest Verminderung von Turbulenzen führt zum einen dazu, dass das Waschsystem energetisch günstiger ist, ferner dazu, dass die Abgabecharakteristik der Abgabeelemente besonders exakt gesteuert und eingehalten werden kann, ferner sehr geringe Fluktuationen der Abgabecharakteristik entstehen.Preferably, the taper of the feed channel is formed with increasing distance from the axis of rotation to an extent substantially proportional to the decrease in a volume flow of the fluid medium with increasing distance from the axis of rotation caused by the delivery of the fluid through the delivery elements , This ensures particularly effective that the flow rate within the feed channel remains largely constant. The resulting avoidance or at least reduction of turbulence on the one hand leads to the fact that the washing system is energetically more favorable, moreover, that the discharge characteristic of the delivery elements can be controlled and maintained particularly accurately, furthermore very small fluctuations of the discharge characteristic arise.
Bei einer besonders bevorzugten Ausführungsform sind alle Abgabeelemente des Wascharmsegmentes in einem Bereich von einer Mittellinie des Wascharmsegmentes bis zu einer seitlichen Begrenzung des Wascharmsegments angeordnet, die in Rotationsrichtung des Wascharmes oder in Bewegungsrichtung eines Wascharmsegments vorne liegt. Diese Anordnung der Abgabeelemente in einem Randbereich hat insbesondere den Effekt, dass ein Überströmen der Abgabeelemente durch das fluide Medium in dem Zuführkanal weiter reduziert wird, was die energetische Effizienz und das zu erzielende Spülergebnis weiter verbessert.In a particularly preferred embodiment, all of the dispenser elements of the wash arm segment are disposed in a region from a centerline of the wash arm segment to a side boundary of the wash arm segment which is forward in the direction of rotation of the wash arm or in the direction of movement of a wash arm segment. This arrangement of the dispensing elements in an edge region has, in particular, the effect of further reducing an overflow of the dispensing elements by the fluid medium in the feed channel, which further improves the energy efficiency and the desired dishwashing result.
Bevorzugt sind die Abgabeelemente als Düsen ausgebildet, wobei ferner bevorzugt zumindest nicht alle Düsen eines Wascharmsegments oder eines Waschsystems die gleiche Abstrahlcharakteristik aufweisen.Preferably, the discharge elements are formed as nozzles, wherein furthermore preferably at least not all nozzles of a Wascharmsegments or a washing system have the same emission characteristics.
Die Abstrahlcharakteristik einer Düse kann zum einen durch die räumliche Positionierung und die Stellung der Düse beeinflusst werden. Der Abstrahlbereich, bei dem es sich typischerweise um einen Abstrahlkegel oder einen Abstrahlfächer handelt, kann zwar im Wesentlichen rotationssymmetrisch sein, er kann aber auch nicht rotationssymmetrisch sein, sodass auch eine Rotation der Düse um ihre Achsen die Abstrahlcharakteristik verändert. Eine Auswahl unterschiedlicher Abstrahlcharakteristiken von Düsen ermöglicht es daher, im Zusammenhang mit der besonderen Positionierung der Abgabeelemente auf einem Wascharmsegment, eine gute Abdeckung der verschiedenen Bereiche der Geschirrspülmaschine sicherzustellen, beispielsweise auch Abgabeelemente dichter anzuordnen, wobei dennoch ein Überlappen der Abstrahlbereiche und eine gegenseitige negative Beeinflussung der Abstrahlbereiche, die dadurch hervorgerufen würde, zu vermeiden.The emission characteristic of a nozzle can be influenced on the one hand by the spatial positioning and the position of the nozzle. Although the radiation region, which is typically a radiation cone or a radiation fan, may be substantially rotationally symmetrical, it may also not be rotationally symmetrical. so that a rotation of the nozzle around its axes changes the emission characteristics. A selection of different radiation characteristics of nozzles therefore makes it possible, in connection with the particular positioning of the dispensing elements on a washing arm segment, to ensure good coverage of the various areas of the dishwasher, for example also to arrange dispensing elements more densely, nevertheless overlapping the irradiation areas and negatively influencing each other Avoid radiation, which would be caused by it.
Bevorzugt sind die Abgabeelemente in einem äußeren Bereich des Wascharmsegments dichter angeordnet als in einem inneren Bereich des Wascharmsegments. Dies ist bevorzugt, weil aufgrund der Rotationsbewegung des Waschsystems während des Spülvorgangs die radial äußeren Bereiche eine größere Fläche und einen größeren Bereich abdecken müssen als die radial innen liegenden Bereiche. Auf diese Weise kann ein gleichmäßig gutes Spülergebnis erzielt wird, unabhängig davon, an welcher Stelle innerhalb der Geschirrspülmaschine sich das Spülgut befindet, beispielsweise in einem äußeren Bereich eines Spülkorbs oder in einem inneren Bereich.Preferably, the dispensing elements are arranged more densely in an outer region of the Wascharmsegments than in an inner region of the Wascharmsegments. This is preferred because due to the rotational movement of the washing system during the flushing operation, the radially outer regions must cover a larger area and a larger area than the radially inner areas. In this way, a uniformly good dishwashing result is achieved, regardless of where in the dishwasher the dishes are located, for example in an outer area of a washing basket or in an inner area.
Eine solche Verdichtung von Abgabeelementen in einem äußeren Bereich kann sowohl bei einem einzelnen Wascharmsegment vorgesehen werden, eine Verdichtung in einem äußeren Bereich ist jedoch insbesondere auch im Hinblick auf mehrere, zusammenwirkende Wascharmsegmente beziehungsweise ein gesamtes Waschsystem mit unterschiedlichen Wascharmsegmenten bevorzugt.Such compaction of delivery elements in an outer region can be provided for both a single Wascharmsegment, but a compression in an outer region is particularly preferred in terms of several, cooperating Wascharmsegmente or an entire washing system with different Wascharmsegmenten.
Gemäß einer besonderen Ausführung des erfindungsgemäßen Waschsystems ist mindestens ein Abgabeelement An so ausgebildet und auf einem Wascharmsegment angeordnet, dass eine Hauptabstrahlrichtung oder eine Mittelachse des Abgabebereichs relativ zu Drehachse R um einen Winkel (γ1) gekippt ist.According to a particular embodiment of the washing system according to the invention at least one dispensing element A n is formed and arranged on a Wascharmsegment that a Hauptabstrahlrichtung or a central axis of the dispensing area is tilted relative to the axis of rotation R by an angle (γ 1 ).
Dies hat den Vorteil, dass eine noch bessere Abdeckung der Bereiche der Geschirrspülmaschine sichergestellt wird, wobei ein Überlappen der Abgabebereiche der Abgabeelemente vermieden werden kann. Ferner kann dadurch zusätzlich sichergestellt werden, dass ein Antrieb des Waschsystems durch die Rückstrahlkraft der entsprechend angeordneten Abgabeelemente gewährleistet oder unterstützt wird.This has the advantage that an even better coverage of the areas of the dishwasher is ensured, wherein an overlapping of the delivery areas of the delivery elements can be avoided. Furthermore, it can additionally be ensured be ensured that a drive of the washing system by the Rückstrahlkraft the correspondingly arranged discharge elements or supported.
Gemäß einer weiteren bevorzugten Ausführungsform des erfindungsgemäßen Waschsystems sind mindestens zwei Abgabeelemente An auf einem Wascharmsegment als Düsen ausgebildet, wobei die Düsen jeweils eine längliche Abgabeöffnung aufweisen, so dass eine Längsachse jeder der Abgabeöffnungen definiert wird, die sich in Richtung der längsten Ausdehnung der Abgabeöffnung erstreckt, wobei die beiden Abgabeelemente so angeordnet sind, dass die Längsachsen der beiden Abgabeelemente nicht parallel zueinander verlaufen und eine Längsachse mindestens einer Abgabeöffnung so liegt, dass sie bzw. ihre Verlängerung nicht die Drehachse R schneidet.According to a further preferred embodiment of the washing system according to the invention, at least two dispensing elements A n are formed as nozzles on a washing arm segment, the nozzles each having an elongate dispensing opening so as to define a longitudinal axis of each dispensing opening extending in the direction of the longest extension of the dispensing opening wherein the two dispensing elements are arranged so that the longitudinal axes of the two dispensing elements are not parallel to one another and a longitudinal axis of at least one dispensing opening is such that it or its extension does not intersect the axis of rotation R.
Auch diese unterschiedliche Ausgestaltung der Abgabeelemente führt dazu, dass eine Überlappung der Abstrahlbereiche noch besser vermieden werden kann, gleichzeitig aber sämtliche relevanten Bereiche der Geschirrspülmaschine zuverlässig abgedeckt werden, so dass ein sehr gutes Spülergebnis erzielt werden kann.These different design of the dispensing elements also means that an overlapping of the radiation areas can be even better avoided, but at the same time all relevant areas of the dishwasher are reliably covered, so that a very good dishwashing result can be achieved.
Die vorliegende Erfindung betrifft auch eine Geschirrspülmaschine, insbesondere eine gewerbliche Geschirrspülmaschine, die mindestens ein Waschsystem nach einem der vorhergehenden Ansprüche umfasst.The present invention also relates to a dishwasher, in particular a commercial dishwasher, comprising at least one washing system according to one of the preceding claims.
Wie bereits erwähnt umfasst eine Geschirrspülmaschine in der Regel mehrere Waschsysteme, die bevorzugt unter und/oder über beispielsweise Waschkörben angeordnet sind, in die Spülgut innerhalb einer Geschirrspülmaschine eingesetzt werden kann.As already mentioned, a dishwasher generally comprises a plurality of washing systems, which are preferably arranged below and / or above, for example, washing baskets in which items to be washed can be inserted inside a dishwasher.
Eine besonders bevorzugte Geschirrspülmaschine umfasst beispielsweise zwei Spülkörbe, wobei ein erstes Waschsystem unter einem unteren Spülkorb angeordnet ist, während ein zweites Waschsystem zwischen den beiden Spülkörben angeordnet ist, und wobei gegebenenfalls zusätzlich ein weiteres Waschsystem über dem oberen Spülkorb angeordnet ist.A particularly preferred dishwashing machine comprises, for example, two rinse baskets, wherein a first washing system is arranged under a lower rinsing basket, while a second washing system is arranged between the two rinsing baskets, and where appropriate additionally a further washing system is arranged above the upper rinsing basket.
Bei einer solchen Geschirrspülmaschine weist das Waschsystem, das unter dem unteren Spülkorb angeordnet ist, sodass Spülgut lediglich oberhalb des Waschsystems positioniert werden kann, Abgabeelemente, insbesondere Düsen, lediglich auf seiner Oberseite auf. Analog weist ein Waschsystem, das so angeordnet ist, dass Spülgut lediglich unter diesem Waschsystem in der Geschirrspülmaschine positioniert werden kann, Abgabeelemente nur an seiner Unterseite auf. Waschsysteme, die so angeordnet, dass Spülgut sowohl oberhalb als auch unterhalb positioniert werden kann, weisen bevorzugt Abgabeelemente sowohl an der Oberseite als auch an der Unterseite auf.In such a dishwasher, the washing system, which is arranged under the lower washing basket, so that items to be washed can be positioned only above the washing system, dispensing elements, in particular nozzles, only on its upper side. Similarly, a washing system that is arranged so that items to be washed can only be positioned under this washing system in the dishwasher, dispensing elements only on its underside. Washing systems arranged so that items to be washed can be positioned both above and below preferably have delivery elements both on the top side and on the bottom side.
Diese und weitere Merkmale und Vorteile der vorliegenden Erfindung werden anhand der nachfolgenden Figuren, die besonders bevorzugte Ausführungsformen der Erfindung zeigen, deutlich:
- Figs. 1 bis 3
- zeigen eine Ausführungsform eines erfindungsgemäßen Waschsystems,
- Fig. 4
- zeigt einen Teilquerschnitt eines Wascharmsegments eines erfindungsgemäßen Waschsystems mit einem Abgabeelement; und
- Fig. 5
- zeigt einen anderen Teilquerschnitt eines Wascharmsegments eines erfindungsgemäßen Waschsystems mit einem anderen Abgabeelement.
- Figs. 1 to 3
- show an embodiment of a washing system according to the invention,
- Fig. 4
- shows a partial cross section of a Wascharmsegments a washing system according to the invention with a delivery element; and
- Fig. 5
- shows another partial cross section of a Wascharmsegments a washing system according to the invention with another delivery element.
Die
Das Waschsystem 10 ist so ausgebildet, dass es um eine Drehachse R gedreht werden kann, wenn es in einer Geschirrspülmaschine, insbesondere in einer gewerblichen Geschirrspülmaschine, eingebaut ist und betrieben wird.The
Die zwei Wascharmsegmente 100 des Waschsystems 10 sind, in der Ansicht der
Bei den in den
In diesem Zusammenhang soll auch darauf hingewiesen werden, dass es prinzipiell auch möglich ist, dass eine andere Ausführungsform eines Waschsystems Abgabeelemente An auf beiden Seiten, sowohl auf einer Oberseite als auch auf einer Unterseite, aufweist, so dass eine Wasch- oder Spülflüssigkeit in beide Richtungen abgegeben werden kann.In this context, it should also be pointed out that it is also possible in principle for another embodiment of a washing system to have delivery elements A n on both sides, both on an upper side and on an underside, so that a washing or rinsing liquid flows into both Directions can be given.
Das Abgabeelement, das auf einem Wascharmsegment 100 den geringsten Abstand zur Drehachse R aufweist, wird als Abgabeelement A1 bezeichnet, das Abgabeelement, das den größten Abstand von der Drehachse R aufweist, wird als Abgabeelement Amax bezeichnet (bei der gezeigten Ausführungsform auch Abgabeelement A10). Das in den
Wie in
Auf dem in
Die Position des Abgabeelements A1, das den geringsten Abstand zur Drehachse R aufweist, wird daher durch den Abstand r1 definiert, während die relative Positionierung aller anderer Abgabeelemente An relativ zum ersten Abgabeelement A1 definiert wird, durch den jeweiligen Abstand zur Drehachse R, nämlich rn, und durch den entsprechenden Innenwinkel αn. In diesem Sinne beträgt der Innenwinkel α1, der dem ersten Abgabeelements A1 zugeordnet ist, immer 0°.The position of the delivery element A 1 , which has the smallest distance to the rotation axis R, is therefore defined by the distance r 1 , while the relative positioning of all other delivery elements A n is defined relative to the first delivery element A 1 , by the respective distance to the rotation axis R. , namely r n , and by the corresponding internal angle α n . In this sense, the internal angle α 1 , which is assigned to the first output element A 1 , always 0 °.
Die Position des Abgabeelements Amax, das den größten Abstand von der Drehachse R aufweist, definiert daher den Innenwinkel αmax. Wie oben erläutert, umfasst das Wascharmsegment 100, das in
Der Innenwinkel αmax des Wascharmsegments 100, das in
Wie bereits oben erläutert, können zwischen zwei Verbindungslinien, die in der Drehachse R zusammentreffen, auch jeweils zwei Winkel definiert werden, wobei der Innenwinkel αn im Sinne dieser Erfindung immer der kleinere der beiden Winkel ist. Der andere, größere Winkel, auf den bei der Definition dieser Erfindung jedoch nicht Bezug genommen worden ist, hat daher eine Größe von 360° - αn.As already explained above, in each case two angles can be defined between two connecting lines which meet in the axis of rotation R, wherein the internal angle α n in the sense of this invention is always the smaller of the two angles. The other, larger angle, however, which has not been referred to in the definition of this invention, therefore has a size of 360 ° - α n .
Wie in
Wie ebenfalls in
Bei dieser Ausführungsform sind die als Düsen ausgebildeten Abgabeelemente so ausgebildet und angeordnet, dass sich, auf jedem der Wascharmsegmente 100, die Längsachsen der Abgabeöffnungen der meisten Abgabeelemente An so erstrecken, dass sie die Drehachse R schneiden. Auf jedem Wascharmsegment 100 sind jedoch zwei Abgabeelemente, nämlich jeweils die Abgabeelemente A7 und A9, so ausgebildet, dass die Längsachsen oder ihre Verlängerungen nicht die Drehachse R schneiden, vielmehr ist die Längsachse des Abgabeelements A7 gegenüber einer solchen Anordnung in etwa um 45° gedreht, während die Längsachse der Abgabeöffnung des Abgabeelements A9 gegenüber einer solchen Ausrichtung in etwa um 90° gedreht ist.In this embodiment, the dispensing elements formed as nozzles are configured and arranged such that, on each of the
Dies verhindert eine Überlappung der Abgabebereiche benachbarter Abgabeelemente und sorgt daher für ein besonders gutes Spülergebnis.This prevents an overlap of the delivery areas of adjacent delivery elements and therefore ensures a particularly good rinsing result.
Der Öffnungswinkel β1 kann für alle Abgabeelement An, die auf einem Wascharmsegment 100 angeordnet sind, identisch sein, der Öffnungswinkel kann jedoch von Düse zu Düse oder auch bei einer Düse in Abhängigkeit von der Schnittebene variieren. Bevorzugte Öffnungswinkel liegen in einem Bereich von 30° bis 80°, insbesondere in einem Bereich von 50° bis 70°. Bei der in der
Wie in
Auch dieses Abgabeelement An weist einen im Wesentlichen kegelförmigen Abgabebereich auf, wobei der Kegel einen Öffnungswinkel von β2 aufweist, der, bei dieser Ausführungsform, genauso groß ist wie β1, bei anderen Ausführungsformen aber auch von β1 unterschiedlich ausgebildet sein kann.This discharge element A n also has a substantially cone-shaped delivery region, wherein the cone has an opening angle of β 2 , which, in this embodiment, is the same size as β 1 , but in other embodiments can also be different from β 1 .
Wie in
Wie bereits erläutert, können die Abstrahlcharakteristiken der Abgabeelemente An voneinander variieren, sowohl durch Änderungen des Öffnungswinkels β1, β2, als auch durch Änderung des Winkels γ1, in einem Winkel relativ zur Drehachse R, wobei natürlich die Düsen auch relativ zur Mittelachse 180 gedreht werden können, was bei nicht symmetrischen Abstrahlbereichen der Düse ebenfalls die Abstrahlcharakteristik verändert.As already explained, the radiation characteristics of the output elements A n can vary from one another, both by changes in the opening angle β 1 , β 2 , and by changing the angle γ 1 , at an angle relative to the rotation axis R, of course, the nozzles also relative to the
Die in der Beschreibung, den Ansprüchen und den Figuren offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung wesentlich sein.The features of the invention disclosed in the description, the claims and the figures may be essential for the realization of the invention either individually or in any combination.
Claims (15)
wobei das mindestens eine Wascharmsegment N Abgabeelemente zur Abgabe eines fluiden Mediums umfasst, mit N ≥ 3, wobei jedes Abgabeelement An in einem Abstand rn, mit n = 1...N, von der Drehachse R beabstandet angeordnet ist,
wobei eine Verbindungslinie zwischen der Drehachse R und einem ersten Abgabeelement A1 des mindestens einen Wascharmsegments, das den kürzesten Abstand r1 aller Abgabeelemente An dieses Wascharmsegments zur Drehachse R aufweist, mit einer Verbindungslinie zwischen der Drehachse R und jedem der anderen Abgabeelement An desselben Wascharmsegments, mit n = 2...N, jeweils einen Innenwinkel αn mit n = 2...N, bildet,
wobei ein Innenwinkel αn für jedes Abgabeelement An, mit n = 2...N, eines Wascharmsegments größer ist als ein Innenwinkel αn-1 für ein anderes Abgabeelement An-1, mit n = 2...N, desselben Wascharmsegments, wenn der Abstand rn des Abgabeelements An von der Drehachse R größer ist als der Abstand rn-1 des Abgabeelements An-1 von der Drehachse R,
wobei die Abgabeelemente auf einem Wascharmsegment so angeordnet sind, dass der Innenwinkel αmax für das Abgabeelement Amax, das auf dem Wascharmsegment den größten Abstand rmax aller Abgabeelemente dieses Wascharmsegments von der Drehachse R aufweist, mindestens 60° beträgt.A washing system for a dishwasher, comprising a wash arm rotatable about a rotation axis R, the wash arm including at least one wash arm segment extending from the rotation axis R,
wherein the at least one washing arm segment comprises N dispensing elements for dispensing a fluid medium, where N ≥ 3, each dispensing element A n being spaced apart from the axis of rotation R by a distance r n , where n = 1 ... N,
wherein a connecting line between the rotation axis R and a first discharge element A 1 of the at least one Wascharmsegments having the shortest distance r 1 of all the discharge elements A n this Wascharmsegments to the axis of rotation R, with a connecting line between the rotation axis R and each of the other discharge element A n thereof Wascharmsegments, with n = 2 ... N, each having an inner angle α n with n = 2 ... N, forms,
wherein an inner angle α n for each delivery element A n , where n = 2 ... N, of a Wascharmsegments is greater than an inner angle α n-1 for another delivery element A n-1 , where n = 2 ... N, the same Wascharmsegments when the distance r n of the discharge element A n from the rotation axis R is greater than the distance r n-1 of the discharge element A n-1 from the rotation axis R,
wherein the discharge elements are arranged on a Wascharmsegment so that the inner angle α max for the discharge element A max , which has on the Wascharmsegment the greatest distance r max of all delivery elements of Wascharmsegments of the rotation axis R, at least 60 °.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015111811.4A DE102015111811B4 (en) | 2015-07-21 | 2015-07-21 | Washing system for a dishwasher, and dishwasher with such a washing system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3120747A1 true EP3120747A1 (en) | 2017-01-25 |
EP3120747B1 EP3120747B1 (en) | 2021-08-25 |
Family
ID=56497678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16180467.9A Active EP3120747B1 (en) | 2015-07-21 | 2016-07-21 | Washing system for a dishwasher, and dishwasher with such a washing system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3120747B1 (en) |
DE (1) | DE102015111811B4 (en) |
ES (1) | ES2890679T3 (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0474127A1 (en) | 1990-09-06 | 1992-03-11 | MERLONI ELETTRODOMESTICI S.p.A. | Improved dishwashing machine |
EP1334687A1 (en) | 2002-02-07 | 2003-08-13 | Electrolux Home Products Corporation N.V. | Dishwasher |
US20030192578A1 (en) * | 2002-04-02 | 2003-10-16 | Distinctive Appliances, Inc. | Water spray system for a dishwasher |
DE102010051218A1 (en) | 2010-11-12 | 2012-05-16 | Belimed Ag | Washing arm for a cleaning machine for cleaning medical, pharmaceutical and / or laboratory utensils |
US20120279536A1 (en) * | 2011-05-04 | 2012-11-08 | Whirlpool Corporation | Dishwasher spray arm with diverting valve |
US20120285496A1 (en) * | 2011-05-09 | 2012-11-15 | General Electric Company | Dishwasher spray assembly |
US20130206190A1 (en) | 2010-05-19 | 2013-08-15 | Electrolux Home Products Corporation N.V. | Arrangement in a dishwasher |
US20130291908A1 (en) * | 2012-05-01 | 2013-11-07 | General Electric Company | Spray arm assembly for a dishwasher appliance |
DE102012104026A1 (en) | 2012-05-08 | 2013-11-14 | Winterhalter Gastronom Gmbh | Washing system for dishwashers, particularly commercial dishwashers, has two washing arms, which are arranged in washing chamber of dishwasher, where washing chamber has rectangular shape in cross-sectional plane |
CN203447254U (en) * | 2013-07-10 | 2014-02-26 | 美的集团股份有限公司 | Gushing arm waterway connecting structure and dish washing machine |
-
2015
- 2015-07-21 DE DE102015111811.4A patent/DE102015111811B4/en active Active
-
2016
- 2016-07-21 EP EP16180467.9A patent/EP3120747B1/en active Active
- 2016-07-21 ES ES16180467T patent/ES2890679T3/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0474127A1 (en) | 1990-09-06 | 1992-03-11 | MERLONI ELETTRODOMESTICI S.p.A. | Improved dishwashing machine |
EP1334687A1 (en) | 2002-02-07 | 2003-08-13 | Electrolux Home Products Corporation N.V. | Dishwasher |
US20030192578A1 (en) * | 2002-04-02 | 2003-10-16 | Distinctive Appliances, Inc. | Water spray system for a dishwasher |
US20130206190A1 (en) | 2010-05-19 | 2013-08-15 | Electrolux Home Products Corporation N.V. | Arrangement in a dishwasher |
DE102010051218A1 (en) | 2010-11-12 | 2012-05-16 | Belimed Ag | Washing arm for a cleaning machine for cleaning medical, pharmaceutical and / or laboratory utensils |
US20120279536A1 (en) * | 2011-05-04 | 2012-11-08 | Whirlpool Corporation | Dishwasher spray arm with diverting valve |
US20120285496A1 (en) * | 2011-05-09 | 2012-11-15 | General Electric Company | Dishwasher spray assembly |
US20130291908A1 (en) * | 2012-05-01 | 2013-11-07 | General Electric Company | Spray arm assembly for a dishwasher appliance |
DE102012104026A1 (en) | 2012-05-08 | 2013-11-14 | Winterhalter Gastronom Gmbh | Washing system for dishwashers, particularly commercial dishwashers, has two washing arms, which are arranged in washing chamber of dishwasher, where washing chamber has rectangular shape in cross-sectional plane |
CN203447254U (en) * | 2013-07-10 | 2014-02-26 | 美的集团股份有限公司 | Gushing arm waterway connecting structure and dish washing machine |
Also Published As
Publication number | Publication date |
---|---|
DE102015111811A1 (en) | 2017-01-26 |
EP3120747B1 (en) | 2021-08-25 |
DE102015111811B4 (en) | 2017-02-09 |
ES2890679T3 (en) | 2022-01-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1928609B1 (en) | Shower head | |
EP1707100B1 (en) | Conveyor-type warewasher and spraying tube for same | |
EP2192852A1 (en) | Dishwasher | |
EP2990530B1 (en) | Construction machine with offset bunker rear walls | |
DE202013101201U1 (en) | shower device | |
DE7024995U (en) | Dishwasher | |
DE102018121465A1 (en) | flush toilet | |
EP3036050A1 (en) | Profiled sieve bar, and sieve device made of profiled sieve bars | |
EP2601877A2 (en) | Dishwasher with automatic reversal of the direction of rotation of the spray arm | |
EP2601878A2 (en) | Dishwasher with automatic reversal of the direction of rotation of the spray arm | |
EP1681976B1 (en) | Device for controlling spray channels in dishwasher machines | |
DE102012104026B4 (en) | Dishwashing machine and dishwasher with such a dishwashing system | |
DE102015111811B4 (en) | Washing system for a dishwasher, and dishwasher with such a washing system | |
EP2353732B1 (en) | Dispensing bar | |
EP1673000B1 (en) | Dishwasher with integrated spray channels | |
EP1527678B1 (en) | Mixer | |
DE1926826U (en) | SPRAY DEVICE FOR AUTOMATIC DISHWASHING MACHINES. | |
EP2868818B1 (en) | Sink assembly | |
EP3815595B1 (en) | Transport dishwasher | |
EP3362329B1 (en) | Vehicle washing system | |
AT506464B1 (en) | DEVICE FOR FILLING A STORAGE ROOM WITH A PARTICULAR FUEL | |
DE202009017787U1 (en) | Device for applying a surface layer to cores | |
DE2030118C3 (en) | Machine for grinding and polishing the curved surface of a hollow glass object, in particular the screen of a television tube | |
EP2952129B1 (en) | Sieve system for a dishwasher, and dishwasher with such a sieve system | |
DE1529896C (en) | Extrusion nozzle for flowable mass |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20161010 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20170614 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 502016013680 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: A47L0015230000 Ipc: A47L0015420000 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: A47L 15/42 20060101AFI20210203BHEP Ipc: A47L 15/23 20060101ALI20210203BHEP |
|
INTG | Intention to grant announced |
Effective date: 20210309 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502016013680 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN Ref country code: AT Ref legal event code: REF Ref document number: 1422929 Country of ref document: AT Kind code of ref document: T Effective date: 20210915 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20210825 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2890679 Country of ref document: ES Kind code of ref document: T3 Effective date: 20220121 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211227 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211125 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211125 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211126 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502016013680 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20220527 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210825 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20220731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220721 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220731 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230421 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220721 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1422929 Country of ref document: AT Kind code of ref document: T Effective date: 20220721 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220721 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230721 Year of fee payment: 8 Ref country code: GB Payment date: 20230725 Year of fee payment: 8 Ref country code: ES Payment date: 20230816 Year of fee payment: 8 Ref country code: CH Payment date: 20230801 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230725 Year of fee payment: 8 Ref country code: DE Payment date: 20230726 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20160721 |