EP3834696B1 - Liquid dispenser for dispensing flushing liquid - Google Patents

Liquid dispenser for dispensing flushing liquid Download PDF

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Publication number
EP3834696B1
EP3834696B1 EP19215613.1A EP19215613A EP3834696B1 EP 3834696 B1 EP3834696 B1 EP 3834696B1 EP 19215613 A EP19215613 A EP 19215613A EP 3834696 B1 EP3834696 B1 EP 3834696B1
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EP
European Patent Office
Prior art keywords
liquid
intermediate element
rotation
liquid dispenser
spray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19215613.1A
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German (de)
French (fr)
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EP3834696A1 (en
Inventor
Peter Bächer
Hansjörg Lampe
Wojciech Dominik
Pavol Petracek
Li Hongkun
Shu HAI
Lv PEISHI
Lin Yang
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Haier Germany GmbH
Original Assignee
Haier Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haier Germany GmbH filed Critical Haier Germany GmbH
Priority to ES19215613T priority Critical patent/ES2925989T3/en
Priority to EP19215613.1A priority patent/EP3834696B1/en
Priority to PCT/EP2020/084975 priority patent/WO2021116054A1/en
Publication of EP3834696A1 publication Critical patent/EP3834696A1/en
Application granted granted Critical
Publication of EP3834696B1 publication Critical patent/EP3834696B1/en
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/14Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22Rotary spraying devices
    • A47L15/23Rotary spraying devices moved by means of the sprays

Definitions

  • the invention relates to a liquid dispenser for dispensing rinsing liquid. Furthermore, the invention relates to a dishwasher for cleaning items to be washed with such a liquid dispenser and a method for operating a liquid dispenser.
  • the liquid dispenser comprises a base body, an intermediate element that is rotatably mounted relative to the base body, and a spray element that is rotatably attached to the intermediate element.
  • a rotary movement of the spray element is coupled to a rotary movement of the intermediate element via a constant transmission ratio by means of a gear unit.
  • the flushing liquid is applied using spray nozzles that move on non-circular paths. However, the flushing liquid is not discharged in the corner areas of the flushing chamber. The rinsing performance and thus the cleaning efficiency of the liquid dispenser are reduced as a result.
  • a dishwasher for cleaning items to be washed with a liquid dispenser for dispensing washing liquid is known.
  • a spray element of the liquid dispenser is attached to a base body.
  • the spray element is freely rotatable relative to the base body, in particular with a variable rate of rotation.
  • the washing liquid is discharged unevenly within a washing chamber of the dishwasher. The cleaning efficiency and the rinsing performance of the dishwasher are therefore reduced.
  • Liquid dispenser for dispensing rinsing liquid are also known from EP 1 882 435 A1 .
  • the invention is based on the object of creating a liquid dispenser which ensures that items to be washed are cleaned in a particularly efficient manner.
  • a liquid dispenser having the features of claim 1.
  • a liquid dispenser for dispensing washing liquid with a base body, an intermediate element and a spray element must have a variable rotation rate quotient of an intermediate element rotation rate of the intermediate element relative to the base body and a spray element rotation rate of the spray element relative to the base body in order to to ensure a particularly even application of the washing liquid over a given base area.
  • the liquid dispenser is preferably designed to dispense the washing liquid in a dishwasher. Washing chambers of dishwashers generally have a rectangular, in particular square, base area for efficient use of installation space.
  • variable yaw rate quotient of the intermediate element yaw rate and the spray element yaw rate advantageously ensures that a movement profile of the spray element and thus an area over which the rinsing liquid is applied can be determined or set particularly flexibly.
  • the flushing liquid is evenly distributed over the rectangular base area thus enabled. The efficiency and thus the economy of the cleaning process can be significantly increased.
  • the gear unit can have a spur gear and/or a bevel gear.
  • the gear unit preferably ensures a non-self-locking, torque-transmitting connection of the intermediate element to the spray element.
  • the transmission unit is particularly preferably designed to couple the intermediate element rotation rate to the spray element rotation rate.
  • the arrangement of the spray element relative to the base body is preferably dependent on only a single rotational degree of freedom.
  • this means that driving only one of these components is sufficient to bring about the rotational movements of the spray element and the intermediate element relative to the base body.
  • a transmission ratio of a coupling of the intermediate element rotation rate with the spray element rotation rate corresponds to a number of corners of the base area over which the flushing liquid is discharged.
  • the transmission ratio between the intermediate element rotation rate and the spray element rotation rate is particularly preferably 4.
  • the rinsing liquid is to be understood as meaning water and/or a liquid to which surfactants have been added.
  • the spaced arrangement of the intermediate element axis of rotation from the spray element axis of rotation corresponds to an eccentric arrangement of these axes of rotation with respect to one another.
  • a rotary movement of the spray element relative to the base body involves a translatory movement superimposed.
  • the superimposition of the rotational and translational movement of the spray element relative to the base body ensures a particularly flexible determination of the course of movement of the spray element and thus the particularly evenly distributed application of the washing liquid over the base area.
  • the spray element and/or the intermediate element and/or the control element can have spray nozzles for dispensing the rinsing liquid.
  • the rinsing liquid is preferably conducted by means of a rinsing liquid line from the base body, in particular via the intermediate element, to the spray element.
  • the intermediate element axis of rotation and/or the spray element axis of rotation are preferably oriented vertically. Alternatively, at least one of these axes of rotation can also be oriented horizontally.
  • the liquid dispenser has a drive device for rotating the intermediate element and/or the spray element relative to the base body.
  • the drive device can include at least one motor, in particular an electric motor.
  • the at least one motor can be designed to be controllable in order to drive the intermediate element and/or the spray element in rotation at changing rotation rates, in particular with changing directions of rotation. This advantageously means that the liquid dispenser can be operated particularly flexibly.
  • the intermediate element and the spray element can be driven in rotation independently of one another, in particular by means of the drive device.
  • the liquid dispenser preferably has at least one balancing mass to compensate for an imbalance.
  • the balancing mass can be designed to compensate for an imbalance of the intermediate element about the axis of rotation of the intermediate element and/or of the spray element about the axis of rotation of the spray element.
  • the at least one balancing mass can be attached to a balancing arm, in particular reversibly.
  • the balancing arm enables an eccentric arrangement of the at least one balancing mass to the respective axis of rotation.
  • the base body preferably has a rinsing liquid connection for supplying the rinsing liquid to the liquid dispenser.
  • a rotary connection is preferably arranged in each case, via which the rinsing liquid can be conducted, in particular in a leak-free manner.
  • a spray element axis distance as between the spray element axis of rotation and the intermediate element axis of rotation is preferably determined as a function of the area over which the flushing liquid is to be discharged.
  • the spray element axis distance as is preferably designed as follows: a S i.e ⁇ x 4 .
  • a diagonal of the rectangular base area is denoted by d.
  • x is the length of a short side of the rectangular base.
  • the spray liquid can be distributed particularly evenly both in corner areas and in edge areas of the base area.
  • a S right S 2 ⁇ 1 2 + 1 .
  • a maximum of 25%, in particular a maximum of 10%, in particular a maximum of 5% is preferably deviated from a corresponding dimensioning of the spray element axis spacing a S and/or the maximum radial spray element extent r S .
  • the spray element axis distance a S is preferably determined according to the first-mentioned formula, with d in this case being determined by the main dimension of the base area and x by the minimum dimension.
  • the flushing liquid can thus also be dispensed particularly evenly over triangular and/or pentagonal and/or hexagonal and/or octagonal base areas.
  • a liquid dispenser according to claim 2 can be manufactured and operated particularly economically.
  • the planetary gear ensures a particularly low-friction coupling of the intermediate element yaw rate with the spray element yaw rate.
  • the intermediate element is preferably non-rotatably connected to a sun gear of the planetary gear.
  • a ring gear of the planetary gear can be non-rotatably connected to the base body.
  • a planet gear carrier is preferably connected in a torque-transmitting manner to the spray element.
  • the planetary gear in particular its planet wheels, is preferably encapsulated in a liquid-tight manner from the flushing liquid. Impairment of the functioning of the planetary gear is thus reliably prevented.
  • the flushing liquid is passed through a sun gear shaft attached to the sun gear.
  • the sun gear shaft can be designed as a hollow shaft.
  • a liquid dispenser according to claim 3 enables the flushing liquid to be dispensed in a particularly flexible manner.
  • the control element is preferably designed as a control arm.
  • the intermediate element can Be rotatably mounted spray element axis of rotation.
  • the spray element can preferably be driven in rotation relative to the intermediate element and/or the base body by means of the control element.
  • a liquid dispenser according to claim 4 enables the flushing liquid to be dispensed in a particularly flexible manner. Due to the fact that the control element is rotatably mounted relative to the base body and the intermediate element and the spray element, a course of movement of the spray element can be determined particularly flexibly. In particular, a yaw rate quotient from the intermediate element yaw rate and the spray element yaw rate can be specified in a particularly flexible manner.
  • the control element and/or the intermediate element and/or the spray element are preferably mounted such that they can rotate relative to the base body about axes of rotation that are parallel to one another.
  • a liquid dispenser according to claim 5 is particularly robust in operation.
  • the control element is rotatably mounted relative to the spray element, in particular about an axis oriented parallel to the axis of rotation of the intermediate element and/or to the axis of rotation of the spray element.
  • the control element is preferably mounted on the spray element so that it can be displaced at least with a radial component in relation to the axis of rotation of the spray element.
  • the control element can be connected to the spray element via a linear guide.
  • the linear guide preferably comprises a groove and a sliding block mounted displaceably therein.
  • the groove can be arranged on the spray element and the sliding block can be arranged on the control element or the other way around.
  • the slot nut is rotationally symmetrical, in particular in the form of a coupling ball. In this way, a rotatable mounting of the spray element relative to the control element can be ensured.
  • the control element can preferably be reversibly connected to the spray element via the linear guide.
  • a liquid dispenser according to claim 6 is particularly simple in construction and robust in operation. Because the control element is non-rotatably connected to the planet gear carrier, the intermediate element rotation rate can be coupled to the spray element rotation rate.
  • a liquid dispenser according to claim 7 is particularly simple in construction, can be produced economically and is robust in operation.
  • the rinsing liquid is guided along the axis of rotation between the intermediate elements through a pivot bearing of the control element and/or the planetary gear carrier. Due to the fact that the control element and the intermediate element are rotatably mounted about the same intermediate element axis of rotation, the complexity of the mounting and the rinsing liquid line can be reduced.
  • a liquid dispenser according to claim 8 is particularly reliable and robust in operation.
  • the liquid channel is preferably connected in a liquid-tight manner to a corresponding connection of the base body.
  • the liquid channel is preferably connected in one piece to the sun wheel.
  • the sun gear shaft is formed in one piece with the liquid channel, at least in sections. The planetary gear is thus particularly easy to seal against the rinsing liquid.
  • a liquid dispenser according to claim 9 is particularly robust in operation.
  • the liquid channel is formed concentrically to the intermediate member axis of rotation. In this way, alternating imbalances due to a flushing liquid that is conducted eccentrically to the axis of rotation between the elements are advantageously avoided. Imbalance loads on the storage of the intermediate element can be avoided. In particular, balancing masses on the intermediate element can be avoided.
  • the intermediate element can be rotatably connected to the spray element via a spray element connection.
  • a spray element flange of the intermediate element and an intermediate element engagement of the spray element can be connected to one another so as to be rotatable about the axis of rotation of the spray element and liquid-tight.
  • the spray element flange is preferably designed as a circular disk on which the outflow opening is arranged eccentrically.
  • a liquid dispenser according to claim 10 is structurally particularly easy to implement and reliable in operation.
  • a spray element connection for connecting the intermediate element to the spray element can be dimensioned to be particularly compact. Friction losses due to the rotational movement of the spray element relative to the intermediate element can thus be significantly reduced.
  • a sealing of a liquid line from the intermediate element to the spray element can thus be implemented particularly easily.
  • the spray element connection comprises a snap-in connection, in particular a snap-in connection that can be released in a reversible manner.
  • a liquid dispenser according to claim 11 can be produced particularly economically and is robust in operation.
  • the liquid dispenser is preferably designed without a drive motor.
  • the liquid dispenser, in particular the spray element and/or the intermediate element, is preferably driven exclusively by dispensing the rinsing liquid via the at least one drive nozzle.
  • At least one drive nozzle is preferably arranged on a nozzle arm, in particular the balancing arm. The resulting torque around the respective axis of rotation can be determined via the length of the nozzle arm.
  • a liquid dispenser according to claim 12 can be driven in a particularly controlled manner and is reliable in operation. Because the liquid dispenser has the hydraulic motor for rotating the intermediate element and/or the spray element, the drive is particularly energy-efficient.
  • the hydraulic motor can preferably be driven by means of the flushing liquid.
  • the hydraulic motor is preferably integrated into a flushing liquid circuit.
  • the hydraulic motor can be designed to provide changing rotation rates, in particular with a changing direction of rotation, based on a control signal.
  • a further object of the invention is to provide a dishwasher for cleaning items to be washed which is particularly efficient and economical to operate.
  • the rinsing chamber preferably has a rinsing chamber which is rectangular, in particular square, when viewed from above.
  • the main body of the liquid dispenser can be rigidly connected to the rinsing chamber.
  • the washing liquid can be discharged in a particularly uniform manner within the washing chamber, as a result of which the items to be washed can be cleaned particularly efficiently and therefore economically.
  • the dishwasher includes two of the liquid dispensers.
  • the dishwasher can have an upper and a lower rack for items to be washed.
  • the washing liquid can thus be dispensed particularly evenly over the items to be washed arranged in the two items to be washed.
  • the invention is also based on the object of providing a method for operating a liquid dispenser which enables the flushing liquid to be dispensed in a particularly uniform manner and thus ensures particularly efficient and economical operation of the liquid dispenser.
  • a dishwasher 1 with a washing chamber 2 for accommodating items to be washed 3 is shown.
  • a lower rack 4 for washing items and an upper rack for washing items 5 for carrying the items to be washed 3 are arranged in the washing chamber 2 .
  • the dishwasher 1 also has a lower liquid dispenser 6 for dispensing washing liquid onto the lower rack 4 for washing items and an upper liquid dispenser 7 for dispensing the washing liquid onto the upper basket 5 for washing items.
  • the upper liquid dispenser 7 is preferably designed to correspond to the lower liquid dispenser 6 .
  • a floor pan 8 of the washing chamber 2 is designed to collect the washing liquid that is discharged.
  • the floor pan 8 is connected to a pump sump 9 .
  • a flushing water pump 10 is in fluid communication with the pump sump 9. To supply the lower liquid dispenser 6 and the upper liquid dispenser 7, the flushing water pump 10 is in fluid communication with the lower liquid dispenser 6 and the upper liquid dispenser 7.
  • the lower liquid dispenser 6 comprises a base body 11 which is fixedly connected to the floor pan 8.
  • the flushing water pump 10 is connected to the base body 11 in a fluid-conducting manner.
  • An intermediate element 12 of the lower liquid dispenser 6 is mounted on the base body 11 such that it can rotate about an intermediate element axis of rotation 13 .
  • the intermediate element axis of rotation 13 is oriented vertically. In a top view, the axis of rotation 13 between the elements is arranged in a geometric centroid of the washing chamber 2 .
  • the lower liquid dispenser 6 is shown in further detail.
  • the pump sump 9 is formed in one piece with the base body 11 .
  • the base body 11 includes a rinsing liquid connection 14 for supplying the rinsing liquid.
  • the intermediate element 12 comprises a liquid channel 15 which is connected to the rinsing liquid connection 14 in a liquid-conducting manner.
  • the lower liquid dispenser 6 also includes a spray element 16 which is rotatably mounted on the intermediate element 12 .
  • the spray element 16 is rotatably mounted on the intermediate element 12 about a spray element axis of rotation.
  • the spray element 16 is also rotatably mounted relative to the base body 11 .
  • the rotational movements of the intermediate element 12 and of the spray element 16 relative to the base body 11 are coupled to one another by means of a gear unit 18 .
  • the gear unit 18 is designed as a planetary gear 18a.
  • the transmission unit 18 accordingly comprises a ring gear 19, a planetary gear carrier 20 and a sun gear 21.
  • the ring gear 19 is rigidly attached to the base body 11.
  • a rotation axis of the sun gear 21 is arranged concentrically with the intermediate member rotation axis 13 .
  • the liquid channel 15 penetrates the sun wheel 21.
  • the intermediate element 12 is positively connected to the sun gear 21 in a rotationally fixed manner about the intermediate element axis of rotation 13 via a sun gear connection 22 .
  • Two planetary gears 23 are rotatably mounted on the planetary gear carrier 20 .
  • the planet gears 23 are each in mesh with the ring gear 19 and the sun gear 21.
  • the liquid channel 15 has an inflow opening 24 arranged upstream and an outflow opening 25 arranged downstream.
  • the spray element 16 is mechanically and fluidly connected to the intermediate element 12 via a spray element connection 26 .
  • the outflow opening 25 is arranged on the spray element connection 26 .
  • the spray element 16 is rotatably mounted on the spray element connection 26 and, on the other hand, the washing liquid is transferred from the intermediate element 12 to the spray element 16 via the spray element connection 26 .
  • the transmission unit 18 includes a control element 27 for fixing a rotational position of the spray element 16 relative to the base body 11 and to the intermediate element 12.
  • the control element is for coupling an intermediate element rotation rate ⁇ Z of the intermediate element 12 relative to the base body 11, with a spray element Rate of rotation ⁇ S , the spray element 16 relative to the intermediate element 12 is formed.
  • the control 27 is designed as a control arm.
  • the control element 27 is non-rotatably connected to the planetary gear carrier 20 via a form-fitting profile about the axis of rotation 13 of the intermediate element.
  • the control element 27 is connected to the spray element 16 via a linear guide 28 .
  • the linear guide 28 comprises a coupling ball 31 connected to the control element 27 via a coupling pin 29a, and a pin groove 29b connected to the spray element.
  • the spray element 16 is rotatably mounted relative to the control element 27 about a coupling pin axis of rotation 30 .
  • the control element 27 is non-rotatably connected to the planet gear carrier 20 via a control element connection 32 .
  • the liquid channel 15 penetrates the control element connection 32 and the planet gear carrier 20 in the direction of the intermediate element axis of rotation 13.
  • the intermediate element 12 has two drive nozzles 33a, 33b.
  • the drive nozzles 33a, 33b are in fluid communication with the liquid channel 15.
  • the two drive nozzles 33a, 33b are designed and arranged on the intermediate element 12 such that the resulting torque about the intermediate element axis of rotation 13 is oriented in the same way.
  • the first drive nozzle 33a is arranged on a nozzle arm 34 of the intermediate element 12 .
  • this driving nozzle 33a is arranged at a nozzle distance a D1 from the axis of rotation 13 between the elements.
  • the intermediate element 12 has a balancing mass 35 .
  • the balancing mass 35 is attached to a balancing arm 36 .
  • the second drive nozzle 33b is arranged on the balancing arm 36 at a nozzle distance a D1 from the intermediate element axis of rotation 13.
  • the balancing mass 35 is arranged at a balancing mass distance a W from the intermediate element axis of rotation 13. With reference on the axis of rotation 13 between the elements, the balancing mass 35 is arranged opposite the first drive nozzle 33a.
  • the balancing mass 35 is reversibly attached to the balancing arm 36 , in particular by means of a connecting pin 37 .
  • the spray element axis of rotation 17 is arranged at a distance from the intermediate element axis of rotation 13 by a spray element axis distance as.
  • the intermediate element axis of rotation 13 extends through the inflow opening 24 and the intermediate element axis of rotation 17 extends through the outflow opening 25.
  • the centers of the inflow opening 24 and the outflow opening 25 are respectively spaced apart by the spray element axis distance as.
  • the coupling pin 29a is arranged at a distance from the intermediate element axis of rotation 13 by a distance a K from the coupling pin.
  • the distance between the spray element pivot axis 17 and the coupling pin pivot axis 30 is determined by a control distance ast. Due to the spray element axis distance a S , in particular the eccentric arrangement of the spray element axis of rotation 17 with respect to the intermediate element axis of rotation 13 , the control distance a St is variable.
  • a radial spray element extension r S of the spray element 16 with respect to the spray element axis of rotation 17 is determined as a function of a base area of the washing chamber 2 in such a way that the washing liquid can be distributed evenly over the base area.
  • the planetary gear 18a has a constant transmission ratio i.
  • a yaw rate quotient of an intermediate element yaw rate ⁇ Z of the intermediate element 12 relative to the base body 11 and a control element yaw rate ⁇ St of the control element 27 relative to the base body 11 constant. Due to the connection of the intermediate element 12 to the sun gear 21 and the connection of the control element 27 to the planetary gear carrier 20, the intermediate element yaw rate ⁇ Z is greater than the control element yaw rate ⁇ St .
  • a spray element rotation rate ⁇ S of the spray element 16 relative to the base body 11 is dependent on the instantaneous control distance a St .
  • the control distance a St varies depending on the orientation of the intermediate element 12 relative to the control element 27 about the intermediate element axis of rotation 13 .
  • the spray element rotation rate ⁇ S varies over time.
  • a yaw rate quotient of the intermediate element yaw rate ⁇ Z and the spray element yaw rate ⁇ S is variable, in particular depending on the orientation of the intermediate element 12 relative to the control element 27 .
  • the spray element 16 comprises a spray arm 38.
  • a pin groove 29b is arranged on the spray arm 38 and, together with the coupling pin 29a, forms a linear guide.
  • an intermediate element engagement 39 of the spray element connection 26 for connection to the intermediate element 12 is arranged on the spray arm 38 .
  • the spray arm 38 has six spray nozzles 40 for dispensing the washing liquid.
  • One of the spray nozzles 40 is attached to an outer end of the spray arm 38, in particular at a distance of at least 75% of the radial extension rs of the spray element from the spray element axis of rotation 17.
  • the spray arm 38 is hollow body and connects the spray nozzles 40 in a liquid-conducting manner to the intermediate element engagement 39 and, via this, to the liquid channel 15.
  • the spray element connection 26 has a spray element flange 41 connected to the intermediate element 12 .
  • the spray element flange 41 includes a seal 42 and latching means 43 for positive connection with the intermediate element engagement 39.
  • the dishwasher 1 with the lower liquid dispenser 6 functions as follows:
  • the wash baskets 4, 5 are loaded with wash items 3.
  • the rinsing chamber 2 is closed and rinsing liquid is made available in the pump sump 9 .
  • the rinsing liquid is conveyed from the pump sump 9 to the liquid dispensers 6, 7 by means of the rinsing water pump 10.
  • the rinsing liquid passes through the rinsing liquid connection 14 into the liquid channel 15.
  • the liquid channel 15 penetrates the planetary gear 18a.
  • the planetary gear 18a is sealed off from the rinsing liquid, in particular by means of a gear cover 44 .
  • Rinsing liquid is routed to the drive nozzles 33a, 33b via the liquid channel 15 and via the nozzle arm 34 and the balancing arm 36.
  • the rinsing liquid is discharged tangentially to the axis of rotation 13 of the intermediate element via the drive nozzles 33a, 33b.
  • a torque about the intermediate element axis of rotation 13 is transmitted to the intermediate element 12 .
  • a major part of the rinsing liquid supplied to the lower liquid dispenser 6 is routed to the spray arm 38 via the spray element connection 26 , in particular via the outflow opening 25 .
  • the spray liquid reaches the spray nozzles 40 via the spray arm 38 and is discharged via this into the washing chamber 2, in particular onto the items to be washed 3.
  • the torque generated by the drive nozzles 33a, 33b causes the intermediate element 12 to rotate about the intermediate element axis of rotation 13.
  • the control element 27 is rotated via the planetary gear 18a in accordance with the transmission ratio i.
  • the yaw rate quotient of the intermediate element yaw rate ⁇ Z and the control element yaw rate ⁇ St is constant.
  • the spray element 16 is driven in rotation about the axis of rotation 17 of the spray element by means of the control element 27 .
  • the resulting spray element yaw rate ⁇ S is dependent on the control distance a St and is therefore dependent on the orientation of the intermediate element 12 relative to the orientation of the control element 27 about the intermediate element axis of rotation 13.
  • the control distance a St varies depending on the spray element axis distance as , the coupling pin distance a K , the transmission ratio i and the inter-element rotation rate ⁇ Z over time.
  • the change over time in the yaw rate quotient from the intermediate element yaw rate ⁇ Z and the spray element yaw rate ⁇ S can be defined in a correspondingly flexible manner.
  • the resulting course of movement of the spray element 16 is shown using the movement paths 45a, 45b, 45c, 45d of four track points 46a, 46b, 46c, 46d.
  • the trace points 46a, 46b, 46c, 46d are arranged along a central longitudinal axis of the spray element 16 in a plan view.
  • the trace point 46a is arranged at an end of the spray element 16 which is arranged on the linear guide 28 side relative to the spray element rotation axis 17 .
  • the movement path 45a of this edge-side track point 46a is essentially quadrilateral, in particular square.
  • the movement path 45a thus essentially corresponds to the edge line of a rectangular base area to be wetted with the rinsing liquid.
  • the base has short sides with an edge length x and long sides with an edge length y.
  • the length of a diagonal of the base is d.
  • the transmission ratio i between the movement of the sun gear 21 and the planetary gear carrier 20 is 4.
  • the further trace points 46b, 46c, 46d are arranged at a distance from one another over the longitudinal extent of the spray element 16, starting from the trace point 46a on the ran side.
  • the two track points 46c, 46d lying opposite the track point 46a at the edge are acted upon alternately with a positive and a negative rate of rotation relative to the axis of rotation 13 between the intermediate elements. This change of sign can be seen from loops in the movement paths 45c, 45d. This reversal of movement leads to a particularly intensive cleaning of the items to be washed 3.
  • the rinsing liquid can be distributed particularly evenly over a base area of the rectangular, in particular square, rinsing chamber 2 . Due to the change in the direction of rotation of individual areas of the spray element 16 and thus of the spray nozzles 40 relative to the axis of rotation 13 between the elements, the cleaning intensity is additionally increased. Overall, an improved cleaning effect on the items to be washed 3 can be achieved with the same washing liquid throughput.
  • a further exemplary embodiment of the dishwasher 1 according to the invention is shown with the liquid dispenser 6 according to the invention.
  • the liquid channel 15 is formed concentrically to the axis of rotation 13 between the elements.
  • the intermediate element axis of rotation 13 penetrates both the inflow opening 24 and the outflow opening 25.
  • the intermediate element 12 is designed without the balancing arm 36 and the balancing mass 35 arranged thereon.
  • the intermediate element 12 is driven about the intermediate element axis of rotation 13 by means of a hydraulic motor 47.
  • the hydraulic motor 47 is in fluid communication with the flushing water pump 10.
  • Drive nozzles 33a, 33b for rotating the lower liquid dispenser 6 are not provided.
  • the liquid channel 15 is straight.
  • the spray element flange 41 of the spray element connection 26 is designed as a circular disk.
  • the spray element flange 41 is arranged concentrically to the spray element axis of rotation 17 .
  • the liquid channel 15, in particular the outflow opening 25, are arranged eccentrically relative to the intermediate element axis of rotation 17 by the spray element axis of rotation distance as.
  • the spray element flange 41 is rotatably mounted in the intermediate element engagement 39 in a liquid-tight manner.
  • the structure of the dishwasher 1 with the liquid dispenser 6 corresponds to the structure of the exemplary embodiment described above.
  • the mode of operation of the dishwasher 1 with the liquid dispenser 6 differs from the exemplary embodiment described above as follows:
  • the rinsing liquid is conveyed from the pump sump via the hydraulic motor 47 and the rinsing liquid connection 14 to the lower liquid dispenser 6 by means of the rinsing water pump 10 .
  • the hydraulic motor 47 is driven in rotation by the hydraulic energy provided by the flushing water pump 10 .
  • the rotary movement is transmitted to the intermediate element 12 by the hydraulic motor 47 .
  • the control element 27 is driven in rotation via the planetary gear 18a.
  • the spray element 16 which is rotatably mounted about the spray element axis of rotation 17 , is rotationally driven via the control element 27 .
  • the course of movement of the spray element 16 essentially corresponds to the course of movement of the spray element 16 according to the exemplary embodiment described above.
  • a yaw rate quotient of the intermediate element yaw rate ⁇ Z and the spray element yaw rate ⁇ S is also variable over time. Otherwise, the functioning of the dishwasher 1 with the liquid dispenser 6 corresponds to the functioning of the exemplary embodiment described above.
  • the concentric design of the liquid channel 15 to the intermediate element axis of rotation 13 means that the fluid is guided with particularly little resistance, with an imbalance due to the centrifugal forces acting on the rinsing liquid being able to be avoided within the liquid channel 15 .
  • the liquid dispenser 6, in particular the intermediate element 12 is driven in rotation by the hydraulic motor 47, the drive of the liquid dispenser 6 particularly controlled, robust and reliable.
  • the washing items 3 are cleaned particularly thoroughly and efficiently by means of the dishwasher 1 .

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  • Washing And Drying Of Tableware (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Multiple-Way Valves (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Description

Die Erfindung betrifft einen Flüssigkeitsausbringer zum Ausbringen von Spülflüssigkeit. Ferner betrifft die Erfindung eine Spülmaschine zum Reinigen von Spülgut mit einem derartigen Flüssigkeitsausbringer und ein Verfahren zum Betreiben eines Flüssigkeitsausbringers.The invention relates to a liquid dispenser for dispensing rinsing liquid. Furthermore, the invention relates to a dishwasher for cleaning items to be washed with such a liquid dispenser and a method for operating a liquid dispenser.

Aus der EP 3 384 821 A1 ist ein Flüssigkeitsausbringer für eine Spülmaschine zum Ausbringen von Spülflüssigkeit bekannt. Der Flüssigkeitsausbringer umfasst einen Grundkörper, ein relativ zu dem Grundkörper drehbar gelagertes Zwischenelement und ein Sprühelement, welches drehbar an dem Zwischenelement angebracht ist. Mittels einer Getriebeeinheit ist eine Drehbewegung des Sprühelements über ein konstantes Übersetzungsverhältnis an eine Drehbewegung des Zwischenelements gekoppelt. Das Ausbringen der Spülflüssigkeit erfolgt mittels Sprühdüsen, die sich auf nicht kreisförmigen Bahnen bewegen. Es unterbleibt jedoch das Ausbringen der Spülflüssigkeit in Eckbereichen der Spülkammer. Die Spülleistung und damit die Reinigungseffizienz des Flüssigkeitsausbringers sind hierdurch reduziert.From the EP 3 384 821 A1 a liquid dispenser for a dishwasher for dispensing washing liquid is known. The liquid dispenser comprises a base body, an intermediate element that is rotatably mounted relative to the base body, and a spray element that is rotatably attached to the intermediate element. A rotary movement of the spray element is coupled to a rotary movement of the intermediate element via a constant transmission ratio by means of a gear unit. The flushing liquid is applied using spray nozzles that move on non-circular paths. However, the flushing liquid is not discharged in the corner areas of the flushing chamber. The rinsing performance and thus the cleaning efficiency of the liquid dispenser are reduced as a result.

Aus der EP 2 612 585 A1 ist eine Spülmaschine zum Reinigen von Spülgut mit einem Flüssigkeitsausbringer zum Ausbringen von Spülflüssigkeit bekannt. Ein Sprühelement des Flüssigkeitsausbringers ist an einem Grundkörper angebracht. Das Sprühelement ist gegenüber dem Grundkörper frei drehbar, insbesondere mit veränderlicher Drehrate. Das Ausbringen der Spülflüssigkeit innerhalb einer Spülkammer der Spülmaschine erfolgt ungleichmäßig. Die Reinigungseffizienz und die Spülleistung der Spülmaschine sind deshalb herabgesetzt.From the EP 2 612 585 A1 a dishwasher for cleaning items to be washed with a liquid dispenser for dispensing washing liquid is known. A spray element of the liquid dispenser is attached to a base body. The spray element is freely rotatable relative to the base body, in particular with a variable rate of rotation. The washing liquid is discharged unevenly within a washing chamber of the dishwasher. The cleaning efficiency and the rinsing performance of the dishwasher are therefore reduced.

Flüssigkeitsausbringer zum Ausbringen von Spülflüssigkeit sind ferner bekannt aus der EP 1 882 435 A1 . Der Erfindung liegt die Aufgabe zugrunde, einen Flüssigkeitsausbringer zu schaffen, der die Reinigung von Spülgut in besonders effizienter Weise gewährleistet.Liquid dispenser for dispensing rinsing liquid are also known from EP 1 882 435 A1 . The invention is based on the object of creating a liquid dispenser which ensures that items to be washed are cleaned in a particularly efficient manner.

Diese Aufgabe wird durch einen Flüssigkeitsausbringer mit den Merkmalen des Anspruchs 1 gelöst. Erfindungsgemäß wurde erkannt, dass ein Flüssigkeitsausbringer zum Ausbringen von Spülflüssigkeit mit einem Grundkörper, einem Zwischenelement und einem Sprühelement einen veränderlichen Drehratenquotient aus einer Zwischenelement-Drehrate des Zwischenelements relativ zu dem Grundkörper und einer Sprühelement-Drehrate des Sprühelements relativ zu dem Grundkörper aufweisen muss, um ein über eine vorgegebene Grundfläche besonders gleichmäßiges Ausbringen der Spülflüssigkeit zu gewährleisten. Vorzugsweise ist der Flüssigkeitsausbringer zum Ausbringen der Spülflüssigkeit in einer Spülmaschine ausgebildet. Spülkammern von Spülmaschinen weisen zur effizienten Bauraumnutzung in der Regel eine rechteckförmige, insbesondere quadratische, Grundfläche auf. Um das Ausbringen der Spülflüssigkeit über diese rechteckförmige Grundfläche möglichst gleichverteilt zu ermöglichen, ist es erforderlich, dass das Sprühelement, insbesondere die Sprühdüse, auch in die Eckbereiche dieser Grundfläche gelangt. Vorteilhaft gewährleistet der veränderliche Drehratenquotient aus der Zwischenelement-Drehrate und der Sprühelement-Drehrate, dass ein Bewegungsverlauf des Sprühelements und damit ein Bereich, über den die Spülflüssigkeit ausgebracht wird besonders flexibel bestimmbar bzw. einstellbar sind. Das gleichverteilte Ausbringen der Spülflüssigkeit über die rechteckförmige Grundfläche wird somit ermöglicht. Die Effizienz und damit die Wirtschaftlichkeit des Reinigungsvorgangs können deutlich gesteigert werden.This object is achieved by a liquid dispenser having the features of claim 1. According to the invention, it was recognized that a liquid dispenser for dispensing washing liquid with a base body, an intermediate element and a spray element must have a variable rotation rate quotient of an intermediate element rotation rate of the intermediate element relative to the base body and a spray element rotation rate of the spray element relative to the base body in order to to ensure a particularly even application of the washing liquid over a given base area. The liquid dispenser is preferably designed to dispense the washing liquid in a dishwasher. Washing chambers of dishwashers generally have a rectangular, in particular square, base area for efficient use of installation space. In order to enable the flushing liquid to be applied as evenly distributed as possible over this rectangular base area, it is necessary for the spray element, in particular the spray nozzle, to also reach the corner areas of this base area. The variable yaw rate quotient of the intermediate element yaw rate and the spray element yaw rate advantageously ensures that a movement profile of the spray element and thus an area over which the rinsing liquid is applied can be determined or set particularly flexibly. The flushing liquid is evenly distributed over the rectangular base area thus enabled. The efficiency and thus the economy of the cleaning process can be significantly increased.

Ein derartiger Flüssigkeitsausbringer ist besonders wirtschaftlich herstellbar und zuverlässig im Betrieb. Die Getriebeeinheit kann ein Stirnradgetriebe und/oder ein Kegelradgetriebe aufweisen. Vorzugsweise gewährleistet die Getriebeeinheit eine nicht selbsthemmende drehmomentübertragende Verbindung des Zwischenelements mit dem Sprühelement. Besonders bevorzugt ist die Getriebeeinheit dazu ausgebildet, die Zwischenelement-Drehrate an die Sprühelement-Drehrate zu koppeln. Die Anordnung des Sprühelements relativ zu dem Grundkörper ist vorzugsweise von nur einem einzigen Drehfreiheitsgrad abhängig. Vorteilhaft wird hierdurch erreicht, dass zum Bewirken der Drehbewegungen des Sprühelements und des Zwischenelements relativ zu dem Grundkörper ein Antreiben lediglich einer dieser Komponenten ausreichend ist.Such a liquid dispenser can be produced particularly economically and is reliable in operation. The gear unit can have a spur gear and/or a bevel gear. The gear unit preferably ensures a non-self-locking, torque-transmitting connection of the intermediate element to the spray element. The transmission unit is particularly preferably designed to couple the intermediate element rotation rate to the spray element rotation rate. The arrangement of the spray element relative to the base body is preferably dependent on only a single rotational degree of freedom. Advantageously, this means that driving only one of these components is sufficient to bring about the rotational movements of the spray element and the intermediate element relative to the base body.

Vorzugsweise entspricht ein Übersetzungsverhältnis einer Kopplung der Zwischenelement-Drehrate mit der Sprühelement-Drehrate einer Anzahl von Ecken der Grundfläche, über welche die Spülflüssigkeit ausgebracht wird. Besonders bevorzugt beträgt das Übersetzungsverhältnis zwischen der Zwischenelement-Drehrate und der Sprühelement-Drehrate 4.Preferably, a transmission ratio of a coupling of the intermediate element rotation rate with the spray element rotation rate corresponds to a number of corners of the base area over which the flushing liquid is discharged. The transmission ratio between the intermediate element rotation rate and the spray element rotation rate is particularly preferably 4.

Unter der Spülflüssigkeit ist Wasser und/oder eine mit Tensiden versetzte Flüssigkeit zu verstehen. Die beabstandete Anordnung der Zwischenelement-Drehachse von der Sprühelement-Drehachse entspricht einer exzentrischen Anordnung dieser Drehachsen zueinander.The rinsing liquid is to be understood as meaning water and/or a liquid to which surfactants have been added. The spaced arrangement of the intermediate element axis of rotation from the spray element axis of rotation corresponds to an eccentric arrangement of these axes of rotation with respect to one another.

Dadurch, dass die Zwischenelement-Drehachse beabstandet von der Sprühelement-Drehachse angeordnet ist, wobei das Sprühelement an dem Zwischenelement drehbar gelagert ist, wird eine Drehbewegung des Sprühelements relativ zu dem Grundkörper mit einer translatorischen Bewegung überlagert. Die Überlagerung der rotatorischen und der translatorischen Bewegung des Sprühelements relativ zu dem Grundkörper gewährleistet eine besonders flexible Bestimmung des Bewegungsverlaufs des Sprühelements und damit das besonders gleichmäßig verteilte Ausbringen der Spülflüssigkeit über der Grundfläche.Due to the fact that the axis of rotation of the intermediate element is arranged at a distance from the axis of rotation of the spray element, with the spray element being rotatably mounted on the intermediate element, a rotary movement of the spray element relative to the base body involves a translatory movement superimposed. The superimposition of the rotational and translational movement of the spray element relative to the base body ensures a particularly flexible determination of the course of movement of the spray element and thus the particularly evenly distributed application of the washing liquid over the base area.

Das Sprühelement und/oder das Zwischenelement und/oder das Steuerelement können Sprühdüsen zum Ausbringen der Spülflüssigkeit aufweisen. Vorzugsweise weist ausschließlich das Sprühelement Sprühdüsen zum Ausbringen der Spülflüssigkeit auf. Vorzugsweise wird die Spülflüssigkeit mittels einer Spülflüssigkeitsleitung von dem Grundkörper, insbesondere über das Zwischenelement, zu dem Sprühelement geleitet.The spray element and/or the intermediate element and/or the control element can have spray nozzles for dispensing the rinsing liquid. Preferably, only the spray element has spray nozzles for dispensing the washing liquid. The rinsing liquid is preferably conducted by means of a rinsing liquid line from the base body, in particular via the intermediate element, to the spray element.

Die Zwischenelement-Drehachse und/oder die Sprühelement-Drehachse sind vorzugsweise vertikal orientiert. Alternativ kann auch mindestens eine dieser Drehachsen horizontal orientiert sein.The intermediate element axis of rotation and/or the spray element axis of rotation are preferably oriented vertically. Alternatively, at least one of these axes of rotation can also be oriented horizontally.

Gemäß einem Aspekt der Erfindung weist der Flüssigkeitsausbringer eine Antriebseinrichtung zum Drehantreiben des Zwischenelements und/oder des Sprühelements relativ zu dem Grundkörper auf. Die Antriebseinrichtung kann mindestens einen Motor, insbesondere einen Elektromotor, umfassen. Der mindestens eine Motor kann zum Drehantreiben des Zwischenelements und/oder des Sprühelement mit wechselnden Drehraten, insbesondere mit wechselnden Drehrichtungen, steuerbar ausgebildet sein. Vorteilhaft wird hierdurch erreicht, dass der Flüssigkeitsausbringer besonders flexibel betreibbar ist.According to one aspect of the invention, the liquid dispenser has a drive device for rotating the intermediate element and/or the spray element relative to the base body. The drive device can include at least one motor, in particular an electric motor. The at least one motor can be designed to be controllable in order to drive the intermediate element and/or the spray element in rotation at changing rotation rates, in particular with changing directions of rotation. This advantageously means that the liquid dispenser can be operated particularly flexibly.

Gemäß einem weiteren Aspekt der Erfindung sind das Zwischenelement und das Sprühelement, insbesondere mittels der Antriebseinrichtung, unabhängig voneinander drehantreibbar.According to a further aspect of the invention, the intermediate element and the spray element can be driven in rotation independently of one another, in particular by means of the drive device.

Der Flüssigkeitsausbringer weist vorzugsweise mindestens eine Wuchtmasse zum Ausgleichen einer Unwucht auf. Insbesondere kann die Wuchtmasse zum Ausgleich einer Unwucht des Zwischenelements um die Zwischenelement-Drehachse und/oder des Sprühelements um die Sprühelement-Drehachse, ausgebildet sein. Die mindestens eine Wuchtmasse kann an einem Wuchtarm, insbesondere reversibel, angebracht sein. Der Wuchtarm ermöglicht eine exzentrische Anordnung der mindestens einen Wuchtmasse zu der jeweiligen Drehachse.The liquid dispenser preferably has at least one balancing mass to compensate for an imbalance. In particular, the balancing mass can be designed to compensate for an imbalance of the intermediate element about the axis of rotation of the intermediate element and/or of the spray element about the axis of rotation of the spray element. The at least one balancing mass can be attached to a balancing arm, in particular reversibly. The balancing arm enables an eccentric arrangement of the at least one balancing mass to the respective axis of rotation.

Vorzugsweise weist der Grundkörper einen Spülflüssigkeitsanschluss zum Zuführen der Spülflüssigkeit zu dem Flüssigkeitsausbringer auf. Zwischen dem Grundkörper und dem Zwischenelement sowie zwischen dem Zwischenelement und dem Sprühelement ist vorzugsweise je eine Drehverbindung angeordnet, über welche die Spülflüssigkeit, insbesondere leckagefrei, geleitet werden kann.The base body preferably has a rinsing liquid connection for supplying the rinsing liquid to the liquid dispenser. Between the base body and the intermediate element and between the intermediate element and the spray element, a rotary connection is preferably arranged in each case, via which the rinsing liquid can be conducted, in particular in a leak-free manner.

Ein Sprühelementachsenabstand as zwischen der Sprühelement-Drehachse und der Zwischenelement-Drehachse ist vorzugsweise in Abhängigkeit des Bereichs bestimmt, über den die Spülflüssigkeit ausgebracht werden soll. Für eine möglichst gleichverteilte Ausbringung der Spülflüssigkeit über eine rechteckförmige Grundfläche ist der Sprühelementachsenabstand as vorzugsweise wie folgt gestaltet: a S = d x 4 .

Figure imgb0001
A spray element axis distance as between the spray element axis of rotation and the intermediate element axis of rotation is preferably determined as a function of the area over which the flushing liquid is to be discharged. For a distribution of the washing liquid that is as evenly distributed as possible over a rectangular base area, the spray element axis distance as is preferably designed as follows: a S = i.e x 4 .
Figure imgb0001

Mit d ist eine Diagonale der rechteckförmigen Grundfläche bezeichnet. x ist die Länge einer Kurzseite der rechteckförmigen Grundfläche. Eine maximale radiale Sprühelementerstreckung rS des Sprühelements ausgehend von der Sprühelement-Drehachse beträgt vorzugsweise r S = x 2 + a S .

Figure imgb0002
A diagonal of the rectangular base area is denoted by d. x is the length of a short side of the rectangular base. A maximum radial extension of the spray element r S of the spray element, starting from the axis of rotation of the spray element, is preferably right S = x 2 + a S .
Figure imgb0002

Vorteilhaft wird hierdurch erreicht, dass die Sprühflüssigkeit sowohl in Eckbereichen als auch in Kantenbereichen der Grundfläche besonders gleichmäßig verteilt ausgebracht werden kann. Vorzugsweise wird der Sprühelementachsenabstand aS für eine quadratische Grundfläche wie folgt festgelegt: a S = x 2 1 4 .

Figure imgb0003
This advantageously means that the spray liquid can be distributed particularly evenly both in corner areas and in edge areas of the base area. Preferably, the spray element axis distance a S for a square base area is defined as follows: a S = x 2 1 4 .
Figure imgb0003

Unter Berücksichtigung der vorstehend beschriebenen, vorzugsweisen Ausführung der maximalen, radialen Sprühelementerstreckung rS kann der Sprühelementachsenabstand aS wie folgt bestimmt werden: a S = r S 2 1 2 + 1 .

Figure imgb0004
Taking into account the preferred embodiment of the maximum radial spray element extension r S described above, the spray element axis distance a S can be determined as follows: a S = right S 2 1 2 + 1 .
Figure imgb0004

Von einer entsprechenden Bemessung des Sprühelementachsenabstands aS und/oder der maximalen radialen Sprühelementerstreckung rS wird vorzugsweise um maximal 25 %, insbesondere maximal 10 %, insbesondere maximal 5 % abgewichen.A maximum of 25%, in particular a maximum of 10%, in particular a maximum of 5% is preferably deviated from a corresponding dimensioning of the spray element axis spacing a S and/or the maximum radial spray element extent r S .

Für Grundflächen, welche von einer Rechteckform abweichen, ist der Sprühelementachsenabstand aS vorzugsweise entsprechend der zuerst genannten Formel bestimmt, wobei d in diesem Fall durch die Hauptabmessung der Grundfläche bestimmt ist und x durch die Mindestabmessung. Das Ausbringen der Spülflüssigkeit kann somit auch über dreieckförmige und/oder fünfeckförmige und/oder sechseckförmige und/oder achteckförmige Grundflächen besonders gleichmäßig verteilt erfolgen.For base areas that deviate from a rectangular shape, the spray element axis distance a S is preferably determined according to the first-mentioned formula, with d in this case being determined by the main dimension of the base area and x by the minimum dimension. The flushing liquid can thus also be dispensed particularly evenly over triangular and/or pentagonal and/or hexagonal and/or octagonal base areas.

Ein Flüssigkeitsausbringer nach Anspruch 2 ist besonders wirtschaftlich herstellbar und betreibbar. Das Plantengetriebe gewährleistet eine besonders reibungsarme Kopplung der Zwischenelement-Drehrate mit der Sprühelement-Drehrate.A liquid dispenser according to claim 2 can be manufactured and operated particularly economically. The planetary gear ensures a particularly low-friction coupling of the intermediate element yaw rate with the spray element yaw rate.

Das Zwischenelement ist vorzugsweise drehfest mit einem Sonnenrad des Planetengetriebes verbunden. Ein Hohlrad des Planetengetriebes kann mit dem Grundkörper drehfest verbunden sein. Ein Planetenradträger ist vorzugsweise drehmomentübertragend mit dem Sprühelement verbunden.The intermediate element is preferably non-rotatably connected to a sun gear of the planetary gear. A ring gear of the planetary gear can be non-rotatably connected to the base body. A planet gear carrier is preferably connected in a torque-transmitting manner to the spray element.

Vorzugsweise ist das Planetengetriebe, insbesondere dessen Planetenräder, gegenüber der Spülflüssigkeit flüssigkeitsdicht abgekapselt. Eine Beeinträchtigung der Funktionsweise des Planetengetriebes wird somit zuverlässig verhindert. Vorzugsweise wird die Spülflüssigkeit durch eine an dem Sonnenrad angebrachte Sonnenradwelle geführt. Die Sonnenradwelle kann hierzu als Hohlwelle ausgebildet sein.The planetary gear, in particular its planet wheels, is preferably encapsulated in a liquid-tight manner from the flushing liquid. Impairment of the functioning of the planetary gear is thus reliably prevented. Preferably, the flushing liquid is passed through a sun gear shaft attached to the sun gear. For this purpose, the sun gear shaft can be designed as a hollow shaft.

Ein Flüssigkeitsausbringer nach Anspruch 3 ermöglicht das Ausbringen der Spülflüssigkeit in besonders flexibler Weise. Vorzugsweise ist das Steuerelement als Steuerarm ausgebildet. Das Zwischenelement kann um die Sprühelement-Drehachse drehbar gelagert sein. Vorzugsweise ist das Sprühelement mittels des Steuerelements relativ zu dem Zwischenelement und/oder dem Grundkörper drehantreibbar.A liquid dispenser according to claim 3 enables the flushing liquid to be dispensed in a particularly flexible manner. The control element is preferably designed as a control arm. The intermediate element can Be rotatably mounted spray element axis of rotation. The spray element can preferably be driven in rotation relative to the intermediate element and/or the base body by means of the control element.

Ein Flüssigkeitsausbringer nach Anspruch 4 ermöglicht das Ausbringen der Spülflüssigkeit in besonders flexibler Weise. Dadurch, dass Steuerelement relativ zu dem Grundkörper und dem Zwischenelement und dem Sprühelement drehbar gelagert ist, ist ein Bewegungsverlauf des Sprühelements besonders flexibel bestimmbar. Insbesondere ist ein Drehratenquotient aus der Zwischenelement-Drehrate und der Sprühelement-Drehrate besonders flexibel festlegbar. Vorzugsweise sind das Steuerelement und/oder das Zwischenelement und/oder das Sprühelement relativ zu dem Grundkörper um zueinander jeweils parallele Drehachsen drehbar gelagert.A liquid dispenser according to claim 4 enables the flushing liquid to be dispensed in a particularly flexible manner. Due to the fact that the control element is rotatably mounted relative to the base body and the intermediate element and the spray element, a course of movement of the spray element can be determined particularly flexibly. In particular, a yaw rate quotient from the intermediate element yaw rate and the spray element yaw rate can be specified in a particularly flexible manner. The control element and/or the intermediate element and/or the spray element are preferably mounted such that they can rotate relative to the base body about axes of rotation that are parallel to one another.

Ein Flüssigkeitsausbringer nach Anspruch 5 ist im Betrieb besonders robust. Vorzugsweise ist das Steuerelement relativ zu dem Sprühelement, insbesondere um eine parallel zu der Zwischenelement-Drehachse und/oder zu der Sprühelement-Drehachse orientierte Achse, drehbar gelagert. Vorzugsweise ist das Steuerelement an dem Sprühelement zumindest mit einer Radialkomponente zu der Sprühelement-Drehachse verschiebbar gelagert. Insbesondere kann das Steuerelement mit dem Sprühelement über eine Linearführung verbunden sein. Die rotatorische und die translatorische Komponente der Verlagerung des Sprühelements relativ zu dem Grundkörper können somit zum besonders gleichmäßig verteilten Ausbringen der Spülflüssigkeit über der Grundfläche in einfacher Weise aufeinander abgestimmt werden. Die Linearführung umfasst vorzugsweise eine Nut und einen verschiebbar darin gelagerten Nutenstein. Die Nut kann an dem Sprühelement und der Nutenstein kann an dem Steuerelement angeordnet sein oder umgekehrt. Gemäß einem Aspekt der Erfindung ist der Nutenstein rotationssymmetrisch ausgebildet, insbesondere in Form einer Kopplungskugel. Hierdurch kann eine drehbare Lagerung des Sprühelements relativ zu dem Steuerelement gewährleistet werden. Vorzugsweise ist das Steuerelement mit dem Sprühelement über die Linearführung reversibel verbindbar.A liquid dispenser according to claim 5 is particularly robust in operation. Preferably, the control element is rotatably mounted relative to the spray element, in particular about an axis oriented parallel to the axis of rotation of the intermediate element and/or to the axis of rotation of the spray element. The control element is preferably mounted on the spray element so that it can be displaced at least with a radial component in relation to the axis of rotation of the spray element. In particular, the control element can be connected to the spray element via a linear guide. The rotary and the translatory components of the displacement of the spray element relative to the base body can thus be matched to one another in a simple manner for the particularly evenly distributed application of the washing liquid over the base area. The linear guide preferably comprises a groove and a sliding block mounted displaceably therein. The groove can be arranged on the spray element and the sliding block can be arranged on the control element or the other way around. According to one aspect of the invention, the slot nut is rotationally symmetrical, in particular in the form of a coupling ball. In this way, a rotatable mounting of the spray element relative to the control element can be ensured. The control element can preferably be reversibly connected to the spray element via the linear guide.

Ein Flüssigkeitsausbringer nach Anspruch 6 ist besonders einfach im Aufbau und im Betrieb robust. Dadurch, dass das Steuerelement mit dem Planetenradträger drehfest verbunden ist, kann die Zwischenelement-Drehrate an die Sprühelement-Drehrate gekoppelt werden.A liquid dispenser according to claim 6 is particularly simple in construction and robust in operation. Because the control element is non-rotatably connected to the planet gear carrier, the intermediate element rotation rate can be coupled to the spray element rotation rate.

Ein Flüssigkeitsausbringer nach Anspruch 7 ist besonders einfach im Aufbau, wirtschaftlich herstellbar und im Betrieb robust. Vorzugsweise wird die Spülflüssigkeit entlang der Zwischenelement-Drehachse durch eine Drehlagerung des Steuerelements und/oder des Planetenradträgers geleitet. Dadurch, dass das Steuerelement und das Zwischenelement um dieselbe Zwischenelement-Drehachse drehbar gelagert sind, kann die Komplexität der Lagerung und der Spülflüssigkeitsleitung reduziert werden.A liquid dispenser according to claim 7 is particularly simple in construction, can be produced economically and is robust in operation. Preferably, the rinsing liquid is guided along the axis of rotation between the intermediate elements through a pivot bearing of the control element and/or the planetary gear carrier. Due to the fact that the control element and the intermediate element are rotatably mounted about the same intermediate element axis of rotation, the complexity of the mounting and the rinsing liquid line can be reduced.

Ein Flüssigkeitsausbringer nach Anspruch 8 ist im Betrieb besonders zuverlässig und robust. Vorzugsweise ist der Flüssigkeitskanal flüssigkeitsdicht mit einem entsprechenden Anschluss des Grundkörpers verbunden. Der Flüssigkeitskanal ist vorzugsweise einteilig mit dem Sonnenrad verbunden. Gemäß einem Aspekt der Erfindung ist die Sonnenradwelle zumindest abschnittsweise einstückig mit dem Flüssigkeitskanal ausgebildet. Das Planetengetriebe ist somit besonders einfach gegenüber der Spülflüssigkeit abdichtbar.A liquid dispenser according to claim 8 is particularly reliable and robust in operation. The liquid channel is preferably connected in a liquid-tight manner to a corresponding connection of the base body. The liquid channel is preferably connected in one piece to the sun wheel. According to one aspect of the invention, the sun gear shaft is formed in one piece with the liquid channel, at least in sections. The planetary gear is thus particularly easy to seal against the rinsing liquid.

Ein Flüssigkeitsausbringer nach Anspruch 9 ist besonders robust im Betrieb. Vorzugsweise ist der Flüssigkeitskanal konzentrisch zu der Zwischenelement-Drehachse ausgebildet. Vorteilhaft werden hierdurch wechselnde Unwuchten aufgrund einer exzentrisch zu der Zwischenelement-Drehachse geleiteten Spülflüssigkeit vermieden. Unwuchtlasten auf die Lagerung des Zwischenelements können vermieden werden. Insbesondere können Wuchtmassen an dem Zwischenelement vermieden werden.A liquid dispenser according to claim 9 is particularly robust in operation. Preferably, the liquid channel is formed concentrically to the intermediate member axis of rotation. In this way, alternating imbalances due to a flushing liquid that is conducted eccentrically to the axis of rotation between the elements are advantageously avoided. Imbalance loads on the storage of the intermediate element can be avoided. In particular, balancing masses on the intermediate element can be avoided.

Mit dem Sprühelement kann das Zwischenelement über eine Sprühelement-Verbindung drehbar verbunden sein. Hierzu können ein Sprühelementflansch des Zwischenelements und ein Zwischenelementeingriff des Sprühelements um die Sprühelement-Drehachse drehbar und flüssigkeitsdicht miteinander verbunden sein. Der Sprühelementflansch ist vorzugsweise als kreisrunde Scheibe ausgebildet, an der die Abströmöffnung exzentrisch angeordnet ist.The intermediate element can be rotatably connected to the spray element via a spray element connection. For this purpose, a spray element flange of the intermediate element and an intermediate element engagement of the spray element can be connected to one another so as to be rotatable about the axis of rotation of the spray element and liquid-tight. The spray element flange is preferably designed as a circular disk on which the outflow opening is arranged eccentrically.

Ein Flüssigkeitsausbringer nach Anspruch 10 ist konstruktiv besonders einfach umsetzbar und zuverlässig im Betrieb. Eine Sprühelement-Verbindung zum Verbinden des Zwischenelements mit dem Sprühelement ist besonders kompakt dimensionierbar. Reibungsverluste aufgrund der Drehbewegung des Sprühelements relativ zu dem Zwischenelement können somit erheblich reduziert werden. Eine Abdichtung einer Flüssigkeitsleitung von dem Zwischenelement zu dem Sprühelement kann somit besonders einfach realisiert werden.A liquid dispenser according to claim 10 is structurally particularly easy to implement and reliable in operation. A spray element connection for connecting the intermediate element to the spray element can be dimensioned to be particularly compact. Friction losses due to the rotational movement of the spray element relative to the intermediate element can thus be significantly reduced. A sealing of a liquid line from the intermediate element to the spray element can thus be implemented particularly easily.

Gemäß einem Aspekt der Erfindung umfasst die Sprühelement-Verbindung eine, insbesondere reversibel lösbare, Rastverbindung.According to one aspect of the invention, the spray element connection comprises a snap-in connection, in particular a snap-in connection that can be released in a reversible manner.

Ein Flüssigkeitsausbringer nach Anspruch 11 ist besonders wirtschaftlich herstellbar und robust im Betrieb. Vorzugsweise ist der Flüssigkeitsausbringer antriebsmotorfrei ausgebildet. Der Antrieb des Flüssigkeitsausbringers, insbesondere des Sprühelements und/oder des Zwischenelements erfolgt vorzugsweise ausschließlich durch das Ausbringen der Spülflüssigkeit über die mindestens eine Antriebsdüse. Vorzugsweise ist mindestens eine Antriebsdüse an einem Düsenarm, insbesondere dem Wuchtarm, angeordnet. Über die Länge des Düsenarms kann das resultierende Drehmoment um die jeweilige Drehachse festgelegt werden.A liquid dispenser according to claim 11 can be produced particularly economically and is robust in operation. The liquid dispenser is preferably designed without a drive motor. The liquid dispenser, in particular the spray element and/or the intermediate element, is preferably driven exclusively by dispensing the rinsing liquid via the at least one drive nozzle. At least one drive nozzle is preferably arranged on a nozzle arm, in particular the balancing arm. The resulting torque around the respective axis of rotation can be determined via the length of the nozzle arm.

Ein Flüssigkeitsausbringer nach Anspruch 12 ist besonders kontrolliert antreibbar und zuverlässig im Betrieb. Dadurch, dass der Flüssigkeitsausbringer den Hydraulikmotor zum Drehantreiben des Zwischenelements und/oder des Sprühelements aufweist, ist der Antrieb besonders energieeffizient. Der Hydraulikmotor ist vorzugsweise mittels der Spülflüssigkeit antreibbar. Vorzugsweise ist der Hydraulikmotor in einem Spülflüssigkeitskreislauf eingebunden. Der Hydraulikmotor kann dazu ausgebildet sein, anhand eines Steuersignals wechselnde Drehraten, insbesondere mit wechselnder Drehrichtung, bereitzustellen.A liquid dispenser according to claim 12 can be driven in a particularly controlled manner and is reliable in operation. Because the liquid dispenser has the hydraulic motor for rotating the intermediate element and/or the spray element, the drive is particularly energy-efficient. The hydraulic motor can preferably be driven by means of the flushing liquid. The hydraulic motor is preferably integrated into a flushing liquid circuit. The hydraulic motor can be designed to provide changing rotation rates, in particular with a changing direction of rotation, based on a control signal.

Es ist eine weitere Aufgabe der Erfindung, eine Spülmaschine zum Reinigen von Spülgut bereitzustellen, welche im Betrieb besonders effizient und wirtschaftlich ist.A further object of the invention is to provide a dishwasher for cleaning items to be washed which is particularly efficient and economical to operate.

Diese Aufgabe wird durch eine Spülmaschine mit den Merkmalen des Anspruchs 13 gelöst. Die Vorteile der erfindungsgemäßen Spülmaschine entsprechenden Vorteilen des bereits beschriebenen Flüssigkeitsausbringers.This problem is solved by a dishwasher with the features of claim 13. The advantages of the dishwasher according to the invention correspond to the advantages of the liquid dispenser already described.

Die Spülkammer weist vorzugsweise eine in einer Draufsicht rechteckförmige, insbesondere quadratische, Spülkammer auf. Der Grundkörper des Flüssigkeitsausbringers kann starr mit der Spülkammer verbunden sein. Mittels des Flüssigkeitsausbringers kann die Spülflüssigkeit besonders gleichverteilt innerhalb der Spülkammer ausgebracht werden, wodurch eine besonders effiziente und damit wirtschaftliche Reinigung des Spülguts erfolgen kann.The rinsing chamber preferably has a rinsing chamber which is rectangular, in particular square, when viewed from above. The main body of the liquid dispenser can be rigidly connected to the rinsing chamber. By means of the liquid dispenser, the washing liquid can be discharged in a particularly uniform manner within the washing chamber, as a result of which the items to be washed can be cleaned particularly efficiently and therefore economically.

Gemäß einem Aspekt der Erfindung umfasst die Spülmaschine zwei der Flüssigkeitsausbringer. Insbesondere kann die Spülmaschine einen oberen und einen unteren Spülgutkorb aufweisen. Mittels der beiden Flüssigkeitsausbringer kann die Spülflüssigkeit somit besonders gleichverteilt über das in den beiden Spülgutkörben angeordnete Spülgut ausgebracht werden.According to one aspect of the invention, the dishwasher includes two of the liquid dispensers. In particular, the dishwasher can have an upper and a lower rack for items to be washed. By means of the two liquid dispensers, the washing liquid can thus be dispensed particularly evenly over the items to be washed arranged in the two items to be washed.

Der Erfindung liegt ferner die Aufgabe zugrunde, ein Verfahren zum Betreiben eines Flüssigkeitsausbringers bereitzustellen, welches ein besonders gleichverteiltes Ausbringen der Spülflüssigkeit ermöglicht und damit einen besonders effizienten und wirtschaftlichen Betrieb des Flüssigkeitsausbringers gewährleistet.The invention is also based on the object of providing a method for operating a liquid dispenser which enables the flushing liquid to be dispensed in a particularly uniform manner and thus ensures particularly efficient and economical operation of the liquid dispenser.

Diese Aufgabe wird durch ein Verfahren mit den Merkmalen des Anspruchs 14 gelöst. Die Vorteile des erfindungsgemäßen Verfahrens entsprechen den Vorteilen des vorstehend beschriebenen Flüssigkeitsausbringers und der Spülmaschine. Dadurch, dass der Drehratenquotient aus der Zwischenelement-Drehrate und der Sprühelement-Drehrate veränderlich ist, kann der Bewegungsverlauf des Sprühelements besonders flexibel bestimmt werden. Das Ausbringen der Spülflüssigkeit kann somit besonders gleichverteilt über der zu benetzenden Grundfläche erfolgen.This object is achieved by a method having the features of claim 14. The advantages of the method according to the invention correspond to the advantages of the liquid dispenser and the dishwasher described above. Due to the fact that the yaw rate quotient of the intermediate element yaw rate and the spray element yaw rate is variable, the course of movement of the spray element can be determined particularly flexibly. The flushing liquid can thus be dispensed in a particularly evenly distributed manner over the base area to be wetted.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung zweier Ausführungsbeispiele. Es zeigen:

Fig. 1
eine schematische Darstellung einer Spülmaschine zum Reinigen von Spülgut mit einer Spülkammer zum Aufnehmen des Spülguts und einem Flüssigkeitsausbringer zum Ausbringen von Spülflüssigkeit,
Fig. 2
eine perspektivische Darstellung des Flüssigkeitsausbringers in Fig. 1 weiter im Detail mit einem Grundkörper, einem Sprühelement und einem zwischen dem Grundkörper und dem Sprühelement angeordneten Zwischenelement, in einer ersten Ausbringstellung,
Fig. 3
eine perspektivische Explosionsdarstellung des Flüssigkeitsausbringers in Fig. 1 von schräg vorne,
Fig. 4
eine perspektivische Explosionsdarstellung des Flüssigkeitsausbringers in Fig. 1 von schräg hinten,
Fig. 5
eine perspektivische Darstellung des Flüssigkeitsausbringers in Fig. 1 von schräg vorne in einer zweiten Ausbringstellung, wobei einzelne Komponenten entfernt wurden,
Fig. 6
eine perspektivische Darstellung des Zwischenelements in Fig. 2 mit einem Flüssigkeitskanal und zwei Antriebsdüsen,
Fig. 7
eine Draufsicht auf den in der Spülmaschine angeordneten Flüssigkeitsaufbringer in Fig. 1, wobei ein Bewegungsverlauf des Sprühelements anhand je eines Bewegungspfads von vier Spurpunkten dargestellt ist,
Fig. 8
eine geschnittene, perspektivische Darstellung einer Spülmaschine mit einer Bodenwanne und einem Flüssigkeitsausbringer gemäß einem weiteren Ausführungsbeispiel, wobei sich ein Flüssigkeitskanal eines Zwischenelements des Flüssigkeitsausbringers konzentrisch zu einer Zwischenelement-Drehachse erstreckt,
Fig. 9
eine Seitenansicht des Flüssigkeitsausbringers in Fig. 8,
Fig. 10
eine perspektivische Explosionsdarstellung des Flüssigkeitsausbringers in Fig. 8.
Further features, advantages and details of the invention result from the following description of two exemplary embodiments. Show it:
1
a schematic representation of a dishwasher for cleaning items to be washed with a washing chamber for receiving the items to be washed and a liquid dispenser for dispensing washing liquid,
2
a perspective view of the liquid dispenser in FIG 1 further in detail with a base body, a spray element and an intermediate element arranged between the base body and the spray element, in a first application position,
3
a perspective exploded view of the liquid dispenser in 1 from diagonally in front,
4
a perspective exploded view of the liquid dispenser in 1 from behind,
figure 5
a perspective view of the liquid dispenser in FIG 1 diagonally from the front in a second deployment position, with individual components having been removed,
6
a perspective view of the intermediate element in 2 with a liquid channel and two propulsion nozzles,
7
a top view of the liquid applicator arranged in the dishwasher in FIG 1 , where a movement of the spray element is shown based on a movement path of four track points,
8
a sectional, perspective view of a dishwasher with a base pan and a liquid dispenser according to a further embodiment, wherein a liquid channel of an intermediate element of the liquid dispenser extends concentrically to an intermediate element axis of rotation,
9
a side view of the liquid dispenser in FIG 8 ,
10
a perspective exploded view of the liquid dispenser in 8 .

In der Fig. 1 ist eine Spülmaschine 1 mit einer Spülkammer 2 zum Aufnehmen von Spülgut 3 dargestellt. In der Spülkammer 2 sind ein unterer Spülgutkorb 4 und ein oberer Spülgutkorb 5 zum Tragen des Spülguts 3 angeordnet. Die Spülmaschine 1 weist ferner einen unteren Flüssigkeitsausbringer 6 zum Ausbringen von Spülflüssigkeit auf den unteren Spülgutkorb 4 und einen oberen Flüssigkeitsausbringer 7 zum Ausbringen der Spülflüssigkeit auf den oberen Spülgutkorb 5 auf. Der obere Flüssigkeitsausbringer 7 ist vorzugsweise entsprechend dem unteren Flüssigkeitsausbringer 6 ausgebildet.In the 1 a dishwasher 1 with a washing chamber 2 for accommodating items to be washed 3 is shown. A lower rack 4 for washing items and an upper rack for washing items 5 for carrying the items to be washed 3 are arranged in the washing chamber 2 . The dishwasher 1 also has a lower liquid dispenser 6 for dispensing washing liquid onto the lower rack 4 for washing items and an upper liquid dispenser 7 for dispensing the washing liquid onto the upper basket 5 for washing items. The upper liquid dispenser 7 is preferably designed to correspond to the lower liquid dispenser 6 .

Eine Bodenwanne 8 der Spülkammer 2 ist zum Auffangen der ausgebrachten Spülflüssigkeit ausgebildet. Die Bodenwanne 8 ist mit einem Pumpensumpf 9 verbunden. In fluidleitender Verbindung mit dem Pumpensumpf 9 steht eine Spülwasserpumpe 10. Zum Versorgen des unteren Flüssigkeitsausbringers 6 sowie des oberen Flüssigkeitsausbringers 7 steht die Spülwasserpumpe 10 in flüssigkeitsleitender Verbindung mit dem unteren Flüssigkeitsausbringer 6 und dem oberen Flüssigkeitsausbringer 7.A floor pan 8 of the washing chamber 2 is designed to collect the washing liquid that is discharged. The floor pan 8 is connected to a pump sump 9 . A flushing water pump 10 is in fluid communication with the pump sump 9. To supply the lower liquid dispenser 6 and the upper liquid dispenser 7, the flushing water pump 10 is in fluid communication with the lower liquid dispenser 6 and the upper liquid dispenser 7.

Der untere Flüssigkeitsausbringer 6 umfasst einen fest mit der Bodenwanne 8 verbundenen Grundkörper 11. Die Spülwasserpumpe 10 ist flüssigkeitsleitend mit dem Grundkörper 11 verbunden. Ein Zwischenelement 12 des unteren Flüssigkeitsausbringers 6 ist um eine Zwischenelement-Drehachse 13 drehbar an dem Grundkörper 11 gelagert. Die Zwischenelement-Drehachse 13 ist vertikal ausgerichtet. In einer Draufsicht ist die Zwischenelement-Drehachse 13 in einem geometrischen Flächenschwerpunkt der Spülkammer 2 angeordnet.The lower liquid dispenser 6 comprises a base body 11 which is fixedly connected to the floor pan 8. The flushing water pump 10 is connected to the base body 11 in a fluid-conducting manner. An intermediate element 12 of the lower liquid dispenser 6 is mounted on the base body 11 such that it can rotate about an intermediate element axis of rotation 13 . The intermediate element axis of rotation 13 is oriented vertically. In a top view, the axis of rotation 13 between the elements is arranged in a geometric centroid of the washing chamber 2 .

In den Fig. 2 bis Fig. 5 ist der untere Flüssigkeitsausbringer 6 weiter im Detail dargestellt. Der Pumpensumpf 9 ist einteilig mit dem Grundkörper 11 ausgebildet. Der Grundkörper 11 umfasst einen Spülflüssigkeitsanschluss 14 zum Zuführen der Spülflüssigkeit. Das Zwischenelement 12 umfasst einen Flüssigkeitskanal 15, welcher mit dem Spülflüssigkeitsanschluss 14 flüssigkeitsleitend verbunden ist. Der untere Flüssigkeitsausbringer 6 umfasst ferner ein Sprühelement 16, welches drehbar an dem Zwischenelement 12 gelagert ist. Insbesondere ist das Sprühelement 16 an dem Zwischenelement 12 um eine Sprühelement-Drehachse drehbar gelagert. Das Sprühelement 16 ist auch relativ zu dem Grundkörper 11 drehbar gelagert.In the Figures 2 to 5 the lower liquid dispenser 6 is shown in further detail. The pump sump 9 is formed in one piece with the base body 11 . The base body 11 includes a rinsing liquid connection 14 for supplying the rinsing liquid. The intermediate element 12 comprises a liquid channel 15 which is connected to the rinsing liquid connection 14 in a liquid-conducting manner. The lower liquid dispenser 6 also includes a spray element 16 which is rotatably mounted on the intermediate element 12 . In particular, the spray element 16 is rotatably mounted on the intermediate element 12 about a spray element axis of rotation. The spray element 16 is also rotatably mounted relative to the base body 11 .

Mittels einer Getriebeeinheit 18 sind die Drehbewegungen des Zwischenelements 12 und des Sprühelements 16 relativ zu dem Grundkörper 11 miteinander gekoppelt. Die Getriebeeinheit 18 ist als Planetengetriebe 18a ausgebildet. Die Getriebeeinheit 18 umfasst dementsprechend ein Hohlrad 19, ein Planetenradträger 20 und ein Sonnenrad 21. Das Hohlrad 19 ist starr an dem Grundkörper 11 angebracht. Eine Drehachse des Sonnenrads 21 ist konzentrisch zu der Zwischenelement-Drehachse 13 angeordnet. Der Flüssigkeitskanal 15 durchdringt das Sonnenrad 21.The rotational movements of the intermediate element 12 and of the spray element 16 relative to the base body 11 are coupled to one another by means of a gear unit 18 . The gear unit 18 is designed as a planetary gear 18a. The transmission unit 18 accordingly comprises a ring gear 19, a planetary gear carrier 20 and a sun gear 21. The ring gear 19 is rigidly attached to the base body 11. A rotation axis of the sun gear 21 is arranged concentrically with the intermediate member rotation axis 13 . The liquid channel 15 penetrates the sun wheel 21.

Über eine Sonnenrad-Verbindung 22 ist das Zwischenelement 12 um die Zwischenelement-Drehachse 13 formschlüssig drehfest mit dem Sonnenrad 21 verbunden. An dem Planetenradträger 20 sind zwei Planetenräder 23 drehbar gelagert. Die Planetenräder 23 stehen jeweils in Eingriff mit dem Hohlrad 19 und dem Sonnenrad 21.The intermediate element 12 is positively connected to the sun gear 21 in a rotationally fixed manner about the intermediate element axis of rotation 13 via a sun gear connection 22 . Two planetary gears 23 are rotatably mounted on the planetary gear carrier 20 . The planet gears 23 are each in mesh with the ring gear 19 and the sun gear 21.

Der Flüssigkeitskanal 15 weist eine stromaufwärts angeordnete Zuströmöffnung 24 und eine stromabwärts angeordnete Abströmöffnung 25 auf. Über eine Sprühelement-Verbindung 26 ist das Sprühelement 16 mechanisch und flüssigkeitsleitend mit dem Zwischenelement 12 verbunden. Die Abströmöffnung 25 ist an der Sprühelement-Verbindung 26 angeordnet. An der Sprühelement-Verbindung 26 ist das Sprühelement 16 einerseits drehbar gelagert und andererseits wird die Spülflüssigkeit über die Sprühelement-Verbindung 26 von dem Zwischenelement 12 auf das Sprühelement 16 übertragen.The liquid channel 15 has an inflow opening 24 arranged upstream and an outflow opening 25 arranged downstream. The spray element 16 is mechanically and fluidly connected to the intermediate element 12 via a spray element connection 26 . The outflow opening 25 is arranged on the spray element connection 26 . On the one hand, the spray element 16 is rotatably mounted on the spray element connection 26 and, on the other hand, the washing liquid is transferred from the intermediate element 12 to the spray element 16 via the spray element connection 26 .

Die Getriebeeinheit 18 umfasst ein Steuerelement 27 zum Festlegen einer Drehstellung des Sprühelements 16 relativ zu dem Grundkörper 11 und zu dem Zwischenelement 12. Insbesondere ist das Steuerelement zum Koppeln einer Zwischenelement-Drehrate ωZ des Zwischenelements 12 relativ zu dem Grundkörper 11, mit einer Sprühelement-Drehrate ωS, des Sprühelements 16 relativ zu dem Zwischenelement 12, ausgebildet. Das Steuerelement 27 ist als Steuerarm ausgebildet. Mit dem Planetenradträger 20 ist das Steuerelement 27 über ein Formschlussprofil um die Zwischenelement-Drehachse 13 drehfest verbunden.The transmission unit 18 includes a control element 27 for fixing a rotational position of the spray element 16 relative to the base body 11 and to the intermediate element 12. In particular, the control element is for coupling an intermediate element rotation rate ω Z of the intermediate element 12 relative to the base body 11, with a spray element Rate of rotation ω S , the spray element 16 relative to the intermediate element 12 is formed. The control 27 is designed as a control arm. The control element 27 is non-rotatably connected to the planetary gear carrier 20 via a form-fitting profile about the axis of rotation 13 of the intermediate element.

Mit dem Sprühelement 16 ist das Steuerelement 27 über eine Linearführung 28 verbunden. Die Linearführung 28 umfasst eine mit dem Steuerelement 27 über einen Kopplungsstift 29a verbundene Kopplungskugel 31, und eine mit dem Sprühelement verbundene Stiftnut 29b. Das Sprühelement 16 ist relativ zu dem Steuerelement 27 um eine Kopplungsstift-Drehachse 30 drehbar gelagert.The control element 27 is connected to the spray element 16 via a linear guide 28 . The linear guide 28 comprises a coupling ball 31 connected to the control element 27 via a coupling pin 29a, and a pin groove 29b connected to the spray element. The spray element 16 is rotatably mounted relative to the control element 27 about a coupling pin axis of rotation 30 .

Das Steuerelement 27 ist mit dem Planetenradträger 20 über eine Steuerelement-Verbindung 32 drehfest verbunden. Der Flüssigkeitskanal 15 durchdringt die Steuerelement-Verbindung 32 und den Planetenradträger 20 in Richtung der Zwischenelement-Drehachse 13.The control element 27 is non-rotatably connected to the planet gear carrier 20 via a control element connection 32 . The liquid channel 15 penetrates the control element connection 32 and the planet gear carrier 20 in the direction of the intermediate element axis of rotation 13.

Zum Drehantreiben des Zwischenelements 12 und damit des Sprühelements 16 weist das Zwischenelement 12 zwei Antriebsdüsen 33a, 33b auf. Die Antriebsdüsen 33a, 33b stehen in flüssigkeitsleitender Verbindung mit dem Flüssigkeitskanal 15. Die beiden Antriebsdüsen 33a, 33b sind derart ausgebildet und an dem Zwischenelement 12 angeordnet, dass das resultierende Drehmoment um die Zwischenelement-Drehachse 13 gleich orientiert ist. Die erste Antriebsdüsen 33a ist an einem Düsenarm 34 des Zwischenelements 12 angeordnet. Insbesondere ist diese Antriebsdüse 33a in einem Düsenabstand aD1 von der Zwischenelement-Drehachse 13 angeordnet.In order to drive the intermediate element 12 and thus the spray element 16 in rotation, the intermediate element 12 has two drive nozzles 33a, 33b. The drive nozzles 33a, 33b are in fluid communication with the liquid channel 15. The two drive nozzles 33a, 33b are designed and arranged on the intermediate element 12 such that the resulting torque about the intermediate element axis of rotation 13 is oriented in the same way. The first drive nozzle 33a is arranged on a nozzle arm 34 of the intermediate element 12 . In particular, this driving nozzle 33a is arranged at a nozzle distance a D1 from the axis of rotation 13 between the elements.

Das Zwischenelement 12 weist eine Wuchtmasse 35 auf. Die Wuchtmasse 35 ist an einem Wuchtarm 36 angebracht. An dem Wuchtarm 36 ist die zweite Antriebsdüse 33b angeordnet mit einem Düsenabstand aD1 von der Zwischenelement-Drehachse 13. Zu der Zwischenelement-Drehachse 13 ist die Wuchtmasse 35 in einem Wuchtmassenabstand aW angeordnet. Mit Bezug auf die Zwischenelement-Drehachse 13 ist die Wuchtmasse 35 der ersten Antriebsdüse 33a gegenüberliegend angeordnet. An dem Wuchtarm 36 ist die Wuchtmasse 35, insbesondere mittels eines Verbindungsstifts 37, reversibel angebracht.The intermediate element 12 has a balancing mass 35 . The balancing mass 35 is attached to a balancing arm 36 . The second drive nozzle 33b is arranged on the balancing arm 36 at a nozzle distance a D1 from the intermediate element axis of rotation 13. The balancing mass 35 is arranged at a balancing mass distance a W from the intermediate element axis of rotation 13. With reference on the axis of rotation 13 between the elements, the balancing mass 35 is arranged opposite the first drive nozzle 33a. The balancing mass 35 is reversibly attached to the balancing arm 36 , in particular by means of a connecting pin 37 .

Die Sprühelement-Drehachse 17 ist um einen Sprühelementachsenabstand as beabstandet zu der Zwischenelement-Drehachse 13 angeordnet. Die Zwischenelement-Drehachse 13 erstreckt sich durch die Zuströmöffnung 24 und die Zwischenelement-Drehachse 17 erstreckt sich durch die Abströmöffnung 25. Die Mittelpunkte der Zuströmöffnung 24 und der Abströmöffnung 25 sind entsprechend um den Sprühelementachsenabstand as voneinander beabstandet.The spray element axis of rotation 17 is arranged at a distance from the intermediate element axis of rotation 13 by a spray element axis distance as. The intermediate element axis of rotation 13 extends through the inflow opening 24 and the intermediate element axis of rotation 17 extends through the outflow opening 25. The centers of the inflow opening 24 and the outflow opening 25 are respectively spaced apart by the spray element axis distance as.

Von der Zwischenelement-Drehachse 13 ist der Kopplungsstift 29a um einen Kopplungsstiftabstand aK beabstandet angeordnet. Die Distanz zwischen der Sprühelement-Drehachse 17 und der Kopplungsstift-Drehachse 30 ist durch einen Steuerabstand ast bestimmt. Aufgrund des Sprühelementachsenabstands aS, insbesondere der gegenüber der Zwischenelement-Drehachse 13 exzentrischen Anordnung der Sprühelement-Drehachse 17, ist der Steuerabstand aSt veränderlich. Eine radiale Sprühelementerstreckung rS des Sprühelements 16 mit Bezug auf die Sprühelement-Drehachse 17 ist in Abhängigkeit von einer Grundfläche der Spülkammer 2 derart bestimmt, dass die Spülflüssigkeit über der Grundfläche gleich verteilt ausgebracht werden kann.The coupling pin 29a is arranged at a distance from the intermediate element axis of rotation 13 by a distance a K from the coupling pin. The distance between the spray element pivot axis 17 and the coupling pin pivot axis 30 is determined by a control distance ast. Due to the spray element axis distance a S , in particular the eccentric arrangement of the spray element axis of rotation 17 with respect to the intermediate element axis of rotation 13 , the control distance a St is variable. A radial spray element extension r S of the spray element 16 with respect to the spray element axis of rotation 17 is determined as a function of a base area of the washing chamber 2 in such a way that the washing liquid can be distributed evenly over the base area.

Das Planetengetriebe 18a weist ein konstantes Übersetzungsverhältnis i auf. Ein Drehratenquotient aus einer Zwischenelement-Drehrate ωZ des Zwischenelements 12 relativ zu dem Grundkörper 11 und einer Steuerelement-Drehrate ωSt des Steuerelements 27 relativ zu dem Grundkörper 11 ist konstant. Aufgrund der Verbindung des Zwischenelements 12 mit dem Sonnenrad 21 und der Verbindung des Steuerelements 27 mit dem Planetenradträger 20 ist die Zwischenelement-Drehrate ωZ größer als die Steuerelement-Drehrate ωSt.The planetary gear 18a has a constant transmission ratio i. A yaw rate quotient of an intermediate element yaw rate ω Z of the intermediate element 12 relative to the base body 11 and a control element yaw rate ω St of the control element 27 relative to the base body 11 constant. Due to the connection of the intermediate element 12 to the sun gear 21 and the connection of the control element 27 to the planetary gear carrier 20, the intermediate element yaw rate ω Z is greater than the control element yaw rate ω St .

Eine Sprühelement-Drehrate ωS des Sprühelements 16 relativ zu dem Grundkörper 11 ist abhängig von dem momentanen Steuerabstand aSt. Abhängig von der Orientierung des Zwischenelements 12 relativ zu dem Steuerelement 27 um die Zwischenelement-Drehachse 13 variiert der Steuerabstand aSt. Bei einer konstanten Zwischenelement-Drehrate ωZ variiert damit die Sprühelement-Drehrate ωS über der Zeit. Ein Drehratenquotient aus der Zwischenelement-Drehrate ωZ und der Sprühelement-Drehrate ωS ist, insbesondere abhängig von der Orientierung des Zwischenelements 12 relativ zur dem Steuerelement 27, veränderlich.A spray element rotation rate ω S of the spray element 16 relative to the base body 11 is dependent on the instantaneous control distance a St . The control distance a St varies depending on the orientation of the intermediate element 12 relative to the control element 27 about the intermediate element axis of rotation 13 . With a constant rotation rate ω Z between the elements, the spray element rotation rate ω S varies over time. A yaw rate quotient of the intermediate element yaw rate ω Z and the spray element yaw rate ω S is variable, in particular depending on the orientation of the intermediate element 12 relative to the control element 27 .

Das Sprühelement 16 umfasst einen Sprüharm 38. An dem Sprüharm 38 ist Stiftnut 29b angeordnet, welche zusammen mit dem Kopplungsstift 29a eine Linearführung ausbildet. Ferner ist an dem Sprüharm 38 ein Zwischenelementeingriff 39 der Sprühelement-Verbindung 26 zum Verbinden mit dem Zwischenelement 12 angeordnet. Zum Ausbringen der Spülflüssigkeit umfasst der Sprüharm 38 sechs Sprühdüsen 40. Eine der Sprühdüsen 40 ist an einem äußeren Ende des Sprüharms 38 angebracht, insbesondere in einem Abstand von mindestens 75 % der radialen Sprühelementerstreckung rs von der Sprühelement-Drehachse 17. Der Sprüharm 38 ist als Hohlkörper ausgebildet und verbindet die Sprühdüsen 40 flüssigkeitsleitend mit dem Zwischenelementeingriff 39 und hierüber mit dem Flüssigkeitskanal 15.The spray element 16 comprises a spray arm 38. A pin groove 29b is arranged on the spray arm 38 and, together with the coupling pin 29a, forms a linear guide. Furthermore, an intermediate element engagement 39 of the spray element connection 26 for connection to the intermediate element 12 is arranged on the spray arm 38 . The spray arm 38 has six spray nozzles 40 for dispensing the washing liquid. One of the spray nozzles 40 is attached to an outer end of the spray arm 38, in particular at a distance of at least 75% of the radial extension rs of the spray element from the spray element axis of rotation 17. The spray arm 38 is hollow body and connects the spray nozzles 40 in a liquid-conducting manner to the intermediate element engagement 39 and, via this, to the liquid channel 15.

In der Fig. 6 ist das Zwischenelement 12 weiter im Detail dargestellt. Die Sprühelement-Verbindung 26 weist einen mit dem Zwischenelement 12 verbundenen Sprühelementflansch 41 auf. Der Sprühelementflansch 41 umfasst eine Dichtung 42 sowie Rastmittel 43 zum formschlüssigen Verbindung mit dem Zwischenelementeingriff 39.In the 6 the intermediate element 12 is shown in further detail. The spray element connection 26 has a spray element flange 41 connected to the intermediate element 12 . The spray element flange 41 includes a seal 42 and latching means 43 for positive connection with the intermediate element engagement 39.

Die Funktionsweise der Spülmaschine 1 mit dem unteren Flüssigkeitsausbringer 6 ist wie folgt:
Die Spülgutkörbe 4, 5 werden mit Spülgut 3 beaufschlagt. Die Spülkammer 2 wird geschlossen und Spülflüssigkeit wird in dem Pumpensumpf 9 bereitgestellt. Mittels der Spülwasserpumpe 10 wird die Spülflüssigkeit aus dem Pumpensumpf 9 zu den Flüssigkeitsausbringern 6, 7 gefördert.
The dishwasher 1 with the lower liquid dispenser 6 functions as follows:
The wash baskets 4, 5 are loaded with wash items 3. The rinsing chamber 2 is closed and rinsing liquid is made available in the pump sump 9 . The rinsing liquid is conveyed from the pump sump 9 to the liquid dispensers 6, 7 by means of the rinsing water pump 10.

Die Spülflüssigkeit gelangt über den Spülflüssigkeitsanschluss 14 in den Flüssigkeitskanal 15. Der Flüssigkeitskanal 15 durchdringt dabei das Planetengetriebe 18a. Das Planetengetriebe 18a ist, insbesondere mittels eines Getriebedeckels 44, gegenüber der Spülflüssigkeit abgedichtet.The rinsing liquid passes through the rinsing liquid connection 14 into the liquid channel 15. The liquid channel 15 penetrates the planetary gear 18a. The planetary gear 18a is sealed off from the rinsing liquid, in particular by means of a gear cover 44 .

Über den Flüssigkeitskanal 15 sowie über den Düsenarm 34 und den Wuchtarm 36 wird Spülflüssigkeit zu den Antriebsdüsen 33a, 33b geleitet. Die Spülflüssigkeit wird über die Antriebsdüsen 33a, 33b tangential zu der Zwischenelement-Drehachse 13 ausgebracht. Hierdurch wird ein Drehmoment um die Zwischenelement-Drehachse 13 auf das Zwischenelement 12 übertragen. Ein überwiegender Teil der dem unteren Flüssigkeitsausbringer 6 zugeführten Spülflüssigkeit wird über die Sprühelement-Verbindung 26, insbesondere über die Abströmöffnung 25, zu dem Sprüharm 38 geleitet. Über den Sprüharm 38 gelangt die Sprühflüssigkeit zu den Sprühdüsen 40 und wird über diese in die Spülkammer 2, insbesondere auf das Spülgut 3 ausgebracht.Rinsing liquid is routed to the drive nozzles 33a, 33b via the liquid channel 15 and via the nozzle arm 34 and the balancing arm 36. The rinsing liquid is discharged tangentially to the axis of rotation 13 of the intermediate element via the drive nozzles 33a, 33b. As a result, a torque about the intermediate element axis of rotation 13 is transmitted to the intermediate element 12 . A major part of the rinsing liquid supplied to the lower liquid dispenser 6 is routed to the spray arm 38 via the spray element connection 26 , in particular via the outflow opening 25 . The spray liquid reaches the spray nozzles 40 via the spray arm 38 and is discharged via this into the washing chamber 2, in particular onto the items to be washed 3.

Das mittels der Antriebsdüsen 33a, 33b erzeugte Drehmoment versetzt das Zwischenelement 12 in eine Drehbewegung um die Zwischenelement-Drehachse 13. Über das Planetengetriebe 18a wird das Steuerelement 27 entsprechend des Übersetzungsverhältnisses i in eine Drehbewegung versetzt. Der Drehratenquotient aus der Zwischenelement-Drehrate ωZ und der Steuerelement-Drehrate ωSt ist konstant.The torque generated by the drive nozzles 33a, 33b causes the intermediate element 12 to rotate about the intermediate element axis of rotation 13. The control element 27 is rotated via the planetary gear 18a in accordance with the transmission ratio i. The yaw rate quotient of the intermediate element yaw rate ω Z and the control element yaw rate ω St is constant.

Mittels des Steuerelements 27 wird das Sprühelement 16 um die Sprühelement-Drehachse 17 drehangetrieben. Die sich einstellende Sprühelement-Drehrate ωS ist dabei abhängig von dem Steuerabstand aSt und damit abhängig von der Orientierung des Zwischenelements 12 relativ zu der Orientierung des Steuerelements 27 um die Zwischenelement-Drehachse 13. Der Steuerabstand aSt variiert in Abhängigkeit von dem Sprühelementachsenabstand as, dem Kopplungsstiftabstand aK, dem Übersetzungsverhältnis i und der Zwischenelement-Drehrate ωZ über der Zeit. Die zeitliche Änderung des Drehratenquotienten aus der Zwischenelement-Drehrate ωZ und der Sprühelement-Drehrate ωS ist entsprechend flexibel festlegbar.The spray element 16 is driven in rotation about the axis of rotation 17 of the spray element by means of the control element 27 . The resulting spray element yaw rate ω S is dependent on the control distance a St and is therefore dependent on the orientation of the intermediate element 12 relative to the orientation of the control element 27 about the intermediate element axis of rotation 13. The control distance a St varies depending on the spray element axis distance as , the coupling pin distance a K , the transmission ratio i and the inter-element rotation rate ω Z over time. The change over time in the yaw rate quotient from the intermediate element yaw rate ω Z and the spray element yaw rate ω S can be defined in a correspondingly flexible manner.

In der Fig. 7 ist der resultierende Bewegungsverlauf des Sprühelements 16 anhand der Bewegungspfade 45a, 45b, 45c, 45d von vier Spurpunkten 46a, 46b, 46c, 46d dargestellt. Die Spurpunkte 46a, 46b, 46c, 46d sind in einer Draufsicht entlang einer Mittellängsachse des Sprühelements 16 angeordnet. Der Spurpunkt 46a ist an einem Ende des Sprühelements 16 angeordnet, welches relativ zu der Sprühelement-Drehachse 17 auf Seiten der Linearführung 28 angeordnet ist. Der Bewegungspfad 45a dieses randseitigen Spurpunkts 46a ist im Wesentlichen viereckig, insbesondere quadratisch.In the 7 the resulting course of movement of the spray element 16 is shown using the movement paths 45a, 45b, 45c, 45d of four track points 46a, 46b, 46c, 46d. The trace points 46a, 46b, 46c, 46d are arranged along a central longitudinal axis of the spray element 16 in a plan view. The trace point 46a is arranged at an end of the spray element 16 which is arranged on the linear guide 28 side relative to the spray element rotation axis 17 . The movement path 45a of this edge-side track point 46a is essentially quadrilateral, in particular square.

Der Bewegungspfad 45a entspricht damit im Wesentlichen der Randlinie einer mit der Spülflüssigkeit zu benetzenden rechteckförmigen Grundfläche. Die Grundfläche hat Kurzseiten mit einer Kantenlänge x und Längsseiten mit einer Kantenlänge y. Die Länge einer Diagonalen der Grundfläche ist d. Das Übersetzungsverhältnis i zwischen der Bewegung des Sonnenrads 21 und des Plantenradradträgers 20 beträgt 4.The movement path 45a thus essentially corresponds to the edge line of a rectangular base area to be wetted with the rinsing liquid. The base has short sides with an edge length x and long sides with an edge length y. The length of a diagonal of the base is d. The transmission ratio i between the movement of the sun gear 21 and the planetary gear carrier 20 is 4.

Die weiteren Spurpunkte 46b, 46c, 46d sind ausgehend von dem ranseitigen Spurpunkt 46a über die Längserstreckung des Sprühelements 16 beabstandet zueinander angeordnet. Die beiden dem randseitigen Spurpunkt 46a gegenüberliegenden Spurpunkte 46c, 46d werden relativ zu der Zwischenelement-Drehachse 13 wechselweise mit einer positiven und einer negativen Drehrate beaufschlagt. Dieser Vorzeichenwechsel ist anhand von Schlaufen der Bewegungspfade 45c, 45d erkennbar. Diese Bewegungsumkehr führt zu einer besonders intensiven Reinigung des Spülguts 3.The further trace points 46b, 46c, 46d are arranged at a distance from one another over the longitudinal extent of the spray element 16, starting from the trace point 46a on the ran side. The two track points 46c, 46d lying opposite the track point 46a at the edge are acted upon alternately with a positive and a negative rate of rotation relative to the axis of rotation 13 between the intermediate elements. This change of sign can be seen from loops in the movement paths 45c, 45d. This reversal of movement leads to a particularly intensive cleaning of the items to be washed 3.

Aufgrund der Ausbildung des unteren Flüssigkeitsausbringers 6 derart, dass ein Drehratenquotient aus der Zwischenelement-Drehrate ωZ und der Sprühelement-Drehrate ωS veränderlich ist, kann eine besonders gleichmäßige Ausbringung der Spülflüssigkeit in der Spülkammer 2 erreicht werden. Insbesondere kann die Spülflüssigkeit über eine Grundfläche der rechteckförmigen, insbesondere quadratischen, Spülkammer 2 besonders gleichmäßig verteilt ausgebracht werden. Aufgrund des Drehrichtungswechsels einzelner Bereiche des Sprühelements 16 und damit der Sprühdüsen 40 relativ zu der Zwischenelement-Drehachse 13 ist die Reinigungsintensität zusätzlich erhöht. Insgesamt kann bei gleichem Spülflüssigkeitsdurchsatz eine verbesserte Reinigungswirkung an dem Spülgut 3 erreicht werden.Due to the design of the lower liquid dispenser 6 such that a yaw rate quotient of the intermediate element yaw rate ω Z and the spray element yaw rate ω S is variable, a particularly uniform discharge of the rinsing liquid in the rinsing chamber 2 can be achieved. In particular, the rinsing liquid can be distributed particularly evenly over a base area of the rectangular, in particular square, rinsing chamber 2 . Due to the change in the direction of rotation of individual areas of the spray element 16 and thus of the spray nozzles 40 relative to the axis of rotation 13 between the elements, the cleaning intensity is additionally increased. Overall, an improved cleaning effect on the items to be washed 3 can be achieved with the same washing liquid throughput.

Anhand der Fig. 8 bis Fig. 10 ist ein weiteres Ausführungsbeispiel der erfindungsgemäßen Spülmaschine 1 mit dem erfindungsgemäßen Flüssigkeitsausbringer 6 dargestellt. Im Unterschied zu dem vorstehend beschriebenen Ausführungsbeispiel ist der Flüssigkeitskanal 15 konzentrisch zu der Zwischenelement-Drehachse 13 ausgebildet. Insbesondere durchdringt die Zwischenelement-Drehachse 13 sowohl die Zuströmöffnung 24 als auch die Abströmöffnung 25. Ferner ist das Zwischenelement 12 ohne den Wuchtarm 36 und die daran angeordnete Wuchtmasse 35 ausgebildet. Der Antrieb des Zwischenelements 12 um die Zwischenelement-Drehachse 13 erfolgt mittels eines Hydraulikmotors 47. Der Hydraulikmotor 47 steht in fluidleitender Verbindung mit der Spülwasserpumpe 10. Antriebsdüsen 33a, 33b zum Drehantrieben des unteren Flüssigkeitsausbringers 6 sind nicht vorgesehen.Based on Figures 8 to 10 a further exemplary embodiment of the dishwasher 1 according to the invention is shown with the liquid dispenser 6 according to the invention. In contrast to the embodiment described above, the liquid channel 15 is formed concentrically to the axis of rotation 13 between the elements. In particular, the intermediate element axis of rotation 13 penetrates both the inflow opening 24 and the outflow opening 25. Furthermore, the intermediate element 12 is designed without the balancing arm 36 and the balancing mass 35 arranged thereon. The intermediate element 12 is driven about the intermediate element axis of rotation 13 by means of a hydraulic motor 47. The hydraulic motor 47 is in fluid communication with the flushing water pump 10. Drive nozzles 33a, 33b for rotating the lower liquid dispenser 6 are not provided.

Der Flüssigkeitskanal 15 ist gerade ausgebildet. Der Sprühelementflansch 41 der Sprühelement-Verbindung 26 ist als kreisrunde Scheibe ausgebildet. Der Sprühelementflansch 41 ist konzentrisch zu der Sprühelement-Drehachse 17 angeordnet. Der Flüssigkeitskanal 15, insbesondere die Abströmöffnung 25 sind relativ zu der Zwischenelement-Drehachse 17 um den Sprühelement-Drehachsenabstand as exzentrisch angeordnet. Der Sprühelementflansch 41 ist drehbar und flüssigkeitsdicht in dem Zwischenelementeingriff 39 gelagert.The liquid channel 15 is straight. The spray element flange 41 of the spray element connection 26 is designed as a circular disk. The spray element flange 41 is arranged concentrically to the spray element axis of rotation 17 . The liquid channel 15, in particular the outflow opening 25, are arranged eccentrically relative to the intermediate element axis of rotation 17 by the spray element axis of rotation distance as. The spray element flange 41 is rotatably mounted in the intermediate element engagement 39 in a liquid-tight manner.

Im Übrigen entspricht der Aufbau der Spülmaschine 1 mit dem Flüssigkeitsausbringer 6 dem Aufbau des vorstehend beschriebenen Ausführungsbeispiels.Otherwise, the structure of the dishwasher 1 with the liquid dispenser 6 corresponds to the structure of the exemplary embodiment described above.

Die Funktionsweise der Spülmaschine 1 mit dem Flüssigkeitsausbringer 6 unterscheidet sich von dem vorstehend beschriebenen Ausführungsbeispiel wie folgt:The mode of operation of the dishwasher 1 with the liquid dispenser 6 differs from the exemplary embodiment described above as follows:

Mittels der Spülwasserpumpe 10 wird die Spülflüssigkeit aus dem Pumpensumpf über den Hydraulikmotor 47 und den Spülflüssigkeitsanschluss 14 zu dem unteren Flüssigkeitsausbringer 6 gefördert. Der Hydraulikmotor 47 wird über die von der Spülwasserpumpe 10 bereitgestellte hydraulische Energie drehangetrieben. Die Drehbewegung wird von dem Hydraulikmotor 47 auf das Zwischenelement 12 übertragen. Über das Planetengetriebe 18a wird das Steuerelement 27 drehangetrieben. Das um die Sprühelement-Drehachse 17 drehbar gelagerte Sprühelement 16 wird über das Steuerelement 27 drehangetrieben.The rinsing liquid is conveyed from the pump sump via the hydraulic motor 47 and the rinsing liquid connection 14 to the lower liquid dispenser 6 by means of the rinsing water pump 10 . The hydraulic motor 47 is driven in rotation by the hydraulic energy provided by the flushing water pump 10 . The rotary movement is transmitted to the intermediate element 12 by the hydraulic motor 47 . The control element 27 is driven in rotation via the planetary gear 18a. The spray element 16 , which is rotatably mounted about the spray element axis of rotation 17 , is rotationally driven via the control element 27 .

Der Bewegungsverlauf des Sprühelements 16 entspricht im Wesentlichen dem Bewegungsverlauf des Sprühelements 16 gemäß dem vorstehend beschriebenen Ausführungsbeispiel. Ein Drehratenquotient aus der Zwischenelement-Drehrate ωZ und der Sprühelement-Drehrate ωS ebenso über der Zeit veränderlich. Im Übrigen entspricht die Funktionsweise der Spülmaschine 1 mit dem Flüssigkeitsausbringer 6 der Funktionsweise des vorstehend beschriebenen Ausführungsbeispiels.The course of movement of the spray element 16 essentially corresponds to the course of movement of the spray element 16 according to the exemplary embodiment described above. A yaw rate quotient of the intermediate element yaw rate ω Z and the spray element yaw rate ω S is also variable over time. Otherwise, the functioning of the dishwasher 1 with the liquid dispenser 6 corresponds to the functioning of the exemplary embodiment described above.

Vorteilhaft wird durch die konzentrische Ausbildung des Flüssigkeitskanals 15 zu der Zwischenelement-Drehachse 13 erreicht, dass die Fluidführung besonders widerstandsarm erfolgt, wobei eine Unwucht aufgrund der auf die Spülflüssigkeit wirkenden Zentrifugalkräfte innerhalb des Flüssigkeitskanals 15 vermieden werden kann. Dadurch, dass der Flüssigkeitsausbringer 6, insbesondere das Zwischenelement 12 mittels des Hydraulikmotors 47 drehangetrieben ist, kann der Antrieb des Flüssigkeitsausbringers 6 besonders kontrolliert, robust und zuverlässig erfolgen. Die Reinigung des Spülguts 3 erfolgt mittels der Spülmaschine 1 besonders gründlich und effizient. Advantageously, the concentric design of the liquid channel 15 to the intermediate element axis of rotation 13 means that the fluid is guided with particularly little resistance, with an imbalance due to the centrifugal forces acting on the rinsing liquid being able to be avoided within the liquid channel 15 . Because the liquid dispenser 6, in particular the intermediate element 12, is driven in rotation by the hydraulic motor 47, the drive of the liquid dispenser 6 particularly controlled, robust and reliable. The washing items 3 are cleaned particularly thoroughly and efficiently by means of the dishwasher 1 .

Claims (14)

  1. Liquid dispenser for dispensing rinsing liquid, comprising
    - a base body (11),
    - an intermediate element (12) rotatably mounted on the base body (11) about an intermediate element rotation axis (13), and
    - a spraying element (16) mounted on the intermediate element (12) for rotation relative to the base body (11) and to the intermediate element (12) about a spraying element rotation axis (17) and having at least one spray nozzle (40) for discharging the rinsing liquid, wherein the intermediate element rotation axis (13) is arranged at a distance from the spraying element rotation axis (17) and wherein a rotation rate quotient of an intermediate element rotation rate (ωZ) of the intermediate element (12) relative to the base body (11) and a spraying element rotation rate (ωS) of the spraying element (16) relative to the base body (11) is variable,
    characterized in that
    the intermediate element (12) and the spraying element (16) are connected to each other via a gear unit (18) in a torque-transmitting manner.
  2. Liquid dispenser according to claim 1, characterized in that the gear unit (18) has a planetary gear (18a).
  3. Liquid dispenser according to claim 1 or 2, characterized in that the gear unit (18) comprises a control element (27) for coupling the intermediate element rotation rate (ωZ) with the spraying element rotation rate (ωS).
  4. Liquid dispenser according to claim 3, characterized in that the control element (27) is rotatably mounted relative to the base body (11), the intermediate element (12) and the spraying element (16).
  5. Liquid dispenser according to claim 3 or 4, characterized in that the control element (27) is slidably and/or rotatably mounted on the spraying element (16).
  6. Liquid dispenser according to any one of claims 3 to 5, characterized in that the control element (27) is non-rotatably connected to a planetary wheel carrier (20) of the planetary gear (18a).
  7. Liquid dispenser according to any one of claims 3 to 6, characterized in that the control element (27) is rotatably mounted relative to the base body (11) about the intermediate element rotation axis (13).
  8. Liquid dispenser according to any one of the preceding claims, characterized in that the intermediate element (12) comprises a liquid duct (15) for conducting the rinsing liquid between the base body (11) and the spraying element (16).
  9. Liquid dispenser according to claim 8, characterized in that the intermediate element rotation axis (13) extends through an inflow opening (24) and an outflow opening (25) of the liquid duct (15).
  10. Liquid dispenser according to claim 8, characterized in that the intermediate element rotation axis (13) extends through an inflow opening (24) and the spraying element rotation axis (17) extends through an outflow opening (25) of the liquid duct (15).
  11. Liquid dispenser according to any one of the preceding claims, characterized in that the spraying element (16) and/or the intermediate element (12) and/or the control element (27) have at least one drive nozzle (33a, 33b) for driving the spraying element (16) in rotation.
  12. Liquid dispenser according to any one of the preceding claims, characterized by a hydraulic motor (47) for driving the spraying element (16) in rotation.
  13. Dishwasher for cleaning items to be rinsed, comprising
    - a rinsing chamber (2) for receiving the items to be rinsed (3) and
    - at least one liquid dispenser (6) according to any one of the preceding claims.
  14. Method for operating a liquid dispenser, comprising the steps of
    - providing a liquid dispenser (6) according to any one of claims 1 to 12,
    - rotationally driving the intermediate element (12) relative to the base body (11) about the intermediate element rotation axis (13) at an intermediate element rotation rate (ωZ),
    - rotationally driving the spraying element (16) relative to the intermediate element (12) about the spraying element rotation axis (17) at a spraying element rotation rate (ωS), and
    - changing the rotation rate quotient from the intermediate element rotation rate (ωZ) and the spraying element rotation rate (ωS).
EP19215613.1A 2019-12-12 2019-12-12 Liquid dispenser for dispensing flushing liquid Active EP3834696B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES19215613T ES2925989T3 (en) 2019-12-12 2019-12-12 Liquid distributor for distributing washer fluid
EP19215613.1A EP3834696B1 (en) 2019-12-12 2019-12-12 Liquid dispenser for dispensing flushing liquid
PCT/EP2020/084975 WO2021116054A1 (en) 2019-12-12 2020-12-08 Liquid dispenser for dispensing washing liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19215613.1A EP3834696B1 (en) 2019-12-12 2019-12-12 Liquid dispenser for dispensing flushing liquid

Publications (2)

Publication Number Publication Date
EP3834696A1 EP3834696A1 (en) 2021-06-16
EP3834696B1 true EP3834696B1 (en) 2022-08-10

Family

ID=68887318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19215613.1A Active EP3834696B1 (en) 2019-12-12 2019-12-12 Liquid dispenser for dispensing flushing liquid

Country Status (3)

Country Link
EP (1) EP3834696B1 (en)
ES (1) ES2925989T3 (en)
WO (1) WO2021116054A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1882435A1 (en) * 2006-07-24 2008-01-30 Electrolux Home Products Corporation N.V. Revolving sprinkling assembly
KR101860717B1 (en) * 2012-01-06 2018-05-24 삼성전자주식회사 Nozzle assembly and dish washing machine having the same
CA3006690C (en) 2015-12-01 2020-01-14 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Spraying assembly for dish washing machine and dish washing machine having same

Also Published As

Publication number Publication date
EP3834696A1 (en) 2021-06-16
ES2925989T3 (en) 2022-10-20
WO2021116054A1 (en) 2021-06-17

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