EP2480118A2 - Dishwasher - Google Patents
DishwasherInfo
- Publication number
- EP2480118A2 EP2480118A2 EP10760924A EP10760924A EP2480118A2 EP 2480118 A2 EP2480118 A2 EP 2480118A2 EP 10760924 A EP10760924 A EP 10760924A EP 10760924 A EP10760924 A EP 10760924A EP 2480118 A2 EP2480118 A2 EP 2480118A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- washing
- arm
- dishwasher according
- dishwasher
- drive device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005406 washing Methods 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims description 21
- 239000000696 magnetic material Substances 0.000 claims description 6
- 230000008901 benefit Effects 0.000 description 10
- 239000012530 fluid Substances 0.000 description 9
- 238000011010 flushing procedure Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004851 dishwashing Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
- A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
- A47L15/22—Rotary spraying devices
Definitions
- the present invention relates to a dishwasher, in particular a commercial dishwasher, which has at least one washing arm, which is acted upon by a fluid medium, usually a washing or cleaning liquid, wherein the wash arm dispensing elements, such as nozzles, having the fluid medium on the dishes to be cleaned.
- a washing arm is known for example from DE 10 2007 029 701 B4.
- Such wash arms are driven by the repulsive force of emerging from the discharge elements or nozzles of the wash arm fluid medium and rotated.
- At least one washing arm of the dishwasher is set in rotation by means of a magnetic drive.
- This has, inter alia, the advantage that the rotation of the washing arm, including the control of the speed of rotation of the washing arm, independent of the fluid medium which is discharged from the washing arm, hereinafter also referred to as washing liquid, can be achieved. It is thus possible, both the amount, in particular the flow, so amount / time, the washing liquid and the pressure and / or the direction in which the washing liquid is discharged from the washing arm, regardless of the rotational speed of the washing arm, which is a flexible and more targeted control of the washing process and thus allows better washing results. This is particularly advantageous when different objects, For example, dishes, heavily soiled pots or glasses, must be rinsed.
- the dishwasher according to the invention therefore allows an individual adaptation to the desired situation.
- the dishwasher according to the invention has the advantage that not a portion of the wash water must be used to drive the washing arm, as this leads to a part of the washing liquid can not be used for the cleaning process.
- the dishwashing machine according to the invention therefore also has the advantage that a total of less washing liquid has to be used, which is particularly environmentally friendly.
- the emission direction of the delivery elements preferably washing nozzles
- the arrangement and dispensing direction of the dispensing elements or washing nozzles can therefore be optimized exclusively with regard to the washing result to be achieved, which means that a better washing result is achieved or a desired washing result is achieved in a shorter time, which in turn both energy and Washing liquid can be saved, resulting in a particularly economical dishwasher and an economical washing cycle. This is particularly important in commercial dishwashers, which often run in continuous operation, of great importance.
- the magnetic drive according to the invention of the washing arms also makes it possible for the drive per se, for example an electric motor, to be arranged outside the liquid region, ie in particular outside a rinsing region or a rinsing chamber, whereby the washing arm can be driven without contact so that no moving parts in the liquid area or rinsing area or rinsing room must be guided, which in turn would require openings in the liquid area, which must be sealed, with such seals, in particular of moving parts, very maintenance-prone are and may possibly lead to leakage of liquids and thus damage.
- an electric motor for example an electric motor
- the dishwashing machine according to the invention therefore ensures a drive of a washing arm, without having to provide additional seals, so that no additional sealing problems occur.
- a “washing arm” is to be understood as meaning an apparatus of the dishwasher with which fluid media can be dispensed onto the dishes to be cleaned, which may be, for example, water, essentially without additives, or a flushing medium Acting like other fluid media are conceivable.
- a wash arm may be designed so that it essentially emits only a certain flushing medium, in a preferred embodiment, however, it is designed so that different flushing media can be dispensed.
- Embodiments of the dishwasher according to the invention may, for example, have one or more identically designed washing arms, the geometry of the "arms" being quite different, however, it is possible in other embodiments that different washing arms may be provided one or more washing arms, which deliver flushing medium, and additionally one or more washing arms which deliver a Vietnamese Patterson Cru- speed, therefore, in part, also referred to as "Nach Quiltarm".
- wash arm also includes those partially referred to as Nach Hughesarm and other similar devices which are adapted to deliver a fluid medium.
- the dishwasher according to the invention may comprise one or more washing arms, wherein at least one washing arm can be magnetically driven.
- a particularly advantageous embodiment of a dishwasher may comprise one or two magnetically driven washing arms, which are preferably provided in an edge area of the rinsing area or washing compartment, while additionally providing a conventional washing arm, which is located in a central area or central area of the rinsing area or Dish is arranged.
- At least one rotating washing arm is preferably arranged in a middle region, while two rigid washing arms are preferably arranged on the left and right outside of the washing compartment, in order to cover in particular a substantially rectangular base.
- At least one washing arm and / or a drive element of the at least one washing arm is provided with at least one magnetic element, in particular a permanent magnet, which lies in a humidity range
- the drive device comprising a rotatably driven rotor, on which at least a magnetic element, in particular a permanent magnet, is arranged, which is located in a dry area.
- At least one washing arm and / or at least one drive element of the washing arm is provided with at least one magnetic element.
- the washing arm may in particular be a shaft of the washing arm, but it is also possible for another drive element, for example a further motor shaft, to be provided which is provided with a magnetic element whose movement, in particular rotation, by means of a gear device on the Wave of the wash arm or the wash arm itself is transferred.
- another drive element for example a further motor shaft, to be provided which is provided with a magnetic element whose movement, in particular rotation, by means of a gear device on the Wave of the wash arm or the wash arm itself is transferred.
- the dishwasher further comprises a drive device which can generate a changing magnetic field, which preferably acts on at least one magnetic element provided on at least one washing arm and / or on a drive element of the washing arm, and thus drives the washing arm.
- a drive device which can generate a changing magnetic field, which preferably acts on at least one magnetic element provided on at least one washing arm and / or on a drive element of the washing arm, and thus drives the washing arm.
- This drive device is preferably arranged outside the liquid region or the rinsing region or the rinsing chamber of the dishwasher, so that preferably no additional sealing measures or sealing elements are required for this type of device.
- the drive device is arranged within the liquid region or the rinsing region or the rinsing space, wherein the drive device is then preferably protected against the ingress of liquid or moisture.
- the drive device is not necessary to provide a seal to a movable drive part, so that the advantages described above are still achieved.
- the at least one magnetic element is designed as a permanent magnet, which is preferably arranged on the wash arm and / or on a drive element, in particular on a shaft or axis of the wash arm.
- a plurality of permanent magnets are provided, in particular 2, 3 or 4 permanent magnets, which are preferably arranged in the circumferential direction of the shaft or axis or in a plane of rotation with uniform angular intervals.
- a total of 4 permanent magnets are provided, which are each arranged at a distance of 90 ° to each other. This has the advantage that a uniformly acting driving force can be transmitted.
- the provision of a plurality of magnetic elements also enables the force which must be transmitted to the wash arm by means of one of the elements to be kept low, so that even small magnetic fields or field strengths are sufficient.
- the drive device comprises at least one permanent magnet, which is arranged to be movable.
- a plurality of permanent magnets are also provided in the drive device, in particular 2, 3 or 4 permanent magnets, wherein preferably the number of permanent magnets on the shaft or on a drive element of the shaft of the wash arm or on the wash arm itself with the number of permanent magnets the drive device are identical.
- the permanent magnets of the drive device can be arranged in a preferred embodiment, for example, on a rotor which can be rotated, the permanent magnets are preferably arranged in a plane of rotation with uniform angular intervals from each other, for example, 4 permanent magnets with a 90 ° angle distance.
- Such a rotor may for example be provided with a sprocket, which can be set in rotation by means of a worm, which in turn is driven by an electric motor.
- the permanent magnets of the drive device are preferably arranged such that they lie in the vicinity of the permanent magnets of the wash arm and / or the drive element of the wash arm, for example the shaft or the axis of the wash arm, preferably only separated by a closure or a wall of the wash area Rinsing space, so that an attractive and / or a repulsive force between the permanent magnet (s) of the drive device and the permanent magnet (s) of the wash arm and / or drive element of the wash arm ensure that movement, in particular rotation, of the permanent magnets of the drive device is non-contact is transferred to the wash arm.
- the rotor is preferably formed circular or annular, wherein it is arranged in a preferred Ausbowungsforrn, for example, a substantially cylindrical portion of the washing compartment or Spül Scheme around, in which a shaft or axis of the wash arm is arranged, arranged in this area, the permanent magnets is, so that an effective coupling of the permanent magnets and a small distance of the permanent magnets is ensured to each other.
- a preferred Ausbowungsforrn for example, a substantially cylindrical portion of the washing compartment or Spül Scheme around, in which a shaft or axis of the wash arm is arranged, arranged in this area, the permanent magnets is, so that an effective coupling of the permanent magnets and a small distance of the permanent magnets is ensured to each other.
- the drive device comprises at least one coil device or an electromagnet for generating a magnetic field.
- a coil device may be provided either instead of the permanent magnets described above, but it is possible that the drive device comprises both at least one permanent magnet and at least one coil device or an electromagnet.
- Such a coil device has the advantage that the magnetic field to be generated, which acts on the magnetic elements, in particular the permanent magnets, the washing arm or the drive element of the wash arm, selectively switched on and off, and its strength and change can be easily controlled , so that a targeted control of the rotation of the wash arm is realized particularly effective.
- At least one permanent magnet is arranged on a motor shaft, wherein the permanent magnet is driven by the magnetic field generated by the drive device of the dishwasher, whereby the motor shaft is set in rotation.
- This rotation is transmitted via a corresponding gear device, preferably a worm and a worm wheel, on a shaft or axis of the wash arm.
- a transmission device is preferably arranged in the liquid region, but it is also possible to arrange it outside the liquid region or rinsing region.
- the drive device of the dishwasher comprises at least one permanent magnet which is in rotation or movement is added, and / or at least one coil device which generates a magnetic field, as described above.
- the drive device of the dishwashers is designed such that it generates a magnetic rotating field, wherein this magnetic rotating field is preferably generated by a plurality of coils.
- this magnetic rotating field is preferably generated by a plurality of coils.
- three coils are preferably provided, which are preferably arranged at a uniform angular distance, in this case 120 °.
- these coils are arranged around the at least one magnetic element, in particular a permanent magnet.
- a drive element in particular a shaft or an axis, of the washing arm projects, and on which a magnetic material, in particular at least one permanent magnet , preferably 2, 3 or 4 permanent magnets, is arranged.
- a shaft or an axis of a washing arm itself at least partially made of magnetic material, in particular certain parts of the shaft or axis are formed as a permanent magnet.
- the drive device is designed as a stator, which preferably extends substantially niksegmentformig in a plane parallel to the plane of rotation of the wash arm and in the vicinity of the plane of rotation of the wash arm.
- the wash arm itself is preferably formed with two blades or blades, at the end of each at least one permanent magnet or a magnetic element is provided.
- the washing arm it is also possible for the washing arm to have a plurality of blades or blades, in particular a 3-blade washing arm can be provided, that is to say substantially in the form of a star.
- a stator preferably extends over an angular range of slightly more than 180 °, so that, in particular in connection with a 2-leaf washing arm, a reliable drive is always ensured and no "dead position" can arise -blättrigen wash arm, the angular extent of the stator can also reduce, in a 3-sheet washing arm, the stator preferably extends over an angular range of> 120 °, in a 4-sheet washing arm preferably over an angular range of> 90 °.
- Fig. 1 shows schematically parts of a magnetic drive system of a first embodiment of a dishwasher according to the invention
- FIGS. 2 and 3 schematically show parts of a magnetic drive system of a second embodiment of a dishwasher according to the invention
- FIG. 4 shows schematically parts of a magnetic drive system of a third embodiment of a dishwasher according to the invention.
- Fig. 5 shows schematically parts of a magnetic drive system of a fourth embodiment of a dishwasher according to the invention.
- Fig. 6 shows schematically parts of a magnetic drive system of a fifth embodiment of a dishwasher according to the invention.
- FIG. 1 shows schematically parts of a first embodiment of a drive system of a dishwasher according to the invention.
- An unillustrated rotatable wash arm extending substantially parallel to the plane of the drawing comprises an axle or shaft 120.
- the wash arm rotates about the shaft 120, the axis of rotation is designated 122.
- four permanent magnets 140 are arranged around the circumference of the axis or shaft 120 of the rotary arm, which are arranged substantially on one plane and at an angular distance of 90 °. These permanent magnets 140 are firmly connected to the shaft 120 and thus to the wash arm.
- the axis or the shaft 120 of the washing arm and the permanent magnets 140 are located in a substantially cylindrical portion 520 of a flushing area or a washing compartment or this portion 520 is connected to the washing compartment or Spül Scheme.
- the portion 520 is therefore in this embodiment in the humidity range.
- This subregion 520 is separated from an outer region or drying region via a wall 420, which is formed essentially as a sleeve.
- a rotor 220 In this outer area is a rotor 220, on which four permanent magnets 240 are arranged, wherein the permanent magnets 240 are arranged in a plane and also with a uniform angular distance of 90 ° to each other.
- the rotor 220 is provided with a ring gear 222, said rotor 220 by means of the ring gear 222 via a screw 260 and a motor shaft 270 from an electric motor 280 is driven, so that the rotor 220 can be rotated with the permanent magnet 240, wherein this rotation also takes place about the rotation axis 122.
- the wash arm or axis or shaft 120 of the wash arm follows the rotational movement of the runner 220 so that the wash arm in FIG the dishwasher is rotated.
- Speed and direction of rotation may be controlled arbitrarily and independently of the delivery of a fluid medium from the wash arm via control of the electric motor.
- the permanent magnets 140 and 240 in particular the neodymium magnet (N38SH) has been found to be advantageous.
- N38SH neodymium magnet
- Another alternative is samarium cobalt magnets.
- FIGS. 2 and 3 show parts of a second embodiment of a dishwasher according to the invention.
- the drive device does not comprise permanent magnets as in the embodiment shown in Fig. 1, but a coil device 250, over which a changing magnetic field is generated.
- This changing magnetic field generated by the coil device 250 acts on a permanent magnet 142 which is arranged around a motor shaft 172 which drives a worm wheel 122 via a worm 162.
- a worm wheel 122 At this worm wheel 122, in turn, an axis or shaft 120 of a washing arm is arranged so that it can be set in rotation.
- Worm wheel 122 and screw 162 in this case realize a transmission device, which is arranged in this embodiment in a housing 80, said housing may be arranged sealed in this embodiment in a humidity range, ie in particular in a washing or rinsing the dishwasher. 10 005808
- FIG. 4 schematically shows parts of a further embodiment of a dishwasher according to the invention, which is very similar to the embodiment shown in FIG. 1, so that reference is made in particular to FIG. 1 and the associated description.
- an axis or shaft 120 of the wash arm is disposed in a generally cylindrical portion 520 which is closed off by a wall 420 to separate a moisture area from a dry area.
- the axis or shaft 120 of the washing arm is provided in its outer region with two permanent magnets 140 or a magnetic material, wherein the permanent magnets 140 and magnetic material are arranged in a plane at an angular distance of 180 ° to each other.
- a total of three coil devices 252 are arranged, which generate a changing magnetic field, in particular a rotary magnetic field, which exerts a force on the permanent magnets 140, so that the wash arm is set in rotation.
- the direction of rotation and rotational speeds of the washing arm can be steplessly controlled via the coil device 252.
- the drive device has no moving parts per se.
- Fig. 5 shows schematically parts of another embodiment of a dishwasher according to the invention, which is shown partially in section in plan view.
- Dishwasher 20 includes a plurality of washing arms, but only one washing arm 40 is shown in FIG.
- This wash arm is a 2-sheet wash arm, with the two blades of the wash arm being angularly spaced apart by 180 ° to provide a substantially flush wash arm.
- the washing arm 40 comprises a plurality of dispensing openings 42 for dispensing a fluid medium or dispensing washing liquid, which in this embodiment are designed as adjustable or adjustable nozzles.
- a permanent magnet 144 is disposed in each case.
- a substantially semicircular stator 246 is provided, which extends over an angular range of more than 180 °, in this embodiment over an angular range of about 190 °, so that always at least one permanent magnet 144 in the vertical direction above the stator, so that always a drive of the rotary arm 40 is ensured and no dead position can arise.
- Fig. 6 shows a modification of the embodiment shown in Fig. 1, so that reference is made in particular to the description of FIG. 1.
- a total of four pairs of permanent magnets 248, 249 are provided in the drive device on a rotor 220, the polarity of the permanent magnets being indicated in FIG.
- the pairs of permanent magnets 248, 249 are offset by an angle of 16 ° with respect to a common center axis, preferably an angular offset of 5 ° to 25 °, particularly preferably of 10 ° to 20 °.
- N38SH neodymium magnet
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910042867 DE102009042867A1 (en) | 2009-09-24 | 2009-09-24 | dishwasher |
PCT/EP2010/005808 WO2011035903A2 (en) | 2009-09-24 | 2010-09-22 | Dishwasher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2480118A2 true EP2480118A2 (en) | 2012-08-01 |
EP2480118B1 EP2480118B1 (en) | 2015-02-25 |
Family
ID=43705408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10760924.0A Active EP2480118B1 (en) | 2009-09-24 | 2010-09-22 | Dishwasher |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2480118B1 (en) |
DE (1) | DE102009042867A1 (en) |
ES (1) | ES2535527T3 (en) |
WO (1) | WO2011035903A2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104644098A (en) * | 2015-02-07 | 2015-05-27 | 王宇 | Novel dish washer based on magnetic suspension driving |
DE102016217912B3 (en) | 2016-09-19 | 2018-02-01 | BSH Hausgeräte GmbH | Domestic dishwasher |
DE102017115920B4 (en) | 2017-07-14 | 2019-12-05 | Winterhalter Gastronom Gmbh | Washing arm for a dishwasher, dishwasher and method for operating a dishwasher |
DE102019211429A1 (en) * | 2019-07-31 | 2021-02-04 | BSH Hausgeräte GmbH | Household dishwasher |
EP4098172A1 (en) | 2021-06-03 | 2022-12-07 | Belimed Life Science AG | Spraying device for a cleaning machine for cleaning medical, pharmaceutical and/or laboratory utensils |
DE102021212933A1 (en) * | 2021-11-17 | 2023-05-17 | BSH Hausgeräte GmbH | domestic dishwasher |
DE102022206488A1 (en) * | 2022-06-28 | 2023-12-28 | BSH Hausgeräte GmbH | Household dishwasher |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1817328A (en) * | 1928-03-28 | 1931-08-04 | Siemens Ag | Centrifugal liquid sprayer |
NL56548C (en) * | 1941-09-22 | |||
US3587939A (en) * | 1968-11-07 | 1971-06-28 | Whirlpool Co | Motor-pump |
SG120128A1 (en) * | 1991-12-20 | 2006-03-28 | Fisher & Paykel Appliances Ltd | Dishwasher |
US7828976B2 (en) * | 2007-06-22 | 2010-11-09 | I. Kruger, Inc. | Method of removing phosphorus from wastewater |
DE102007029701B4 (en) | 2007-06-27 | 2009-04-09 | Winterhalter Gastronom Gmbh | Washing system for a dishwasher and dishwasher |
DE102007038673B3 (en) * | 2007-08-15 | 2009-01-08 | Miele & Cie. Kg | Dishwasher comprises an air circulating rib fixed to a rinsing arm to circulate air in the rinsing chamber |
-
2009
- 2009-09-24 DE DE200910042867 patent/DE102009042867A1/en not_active Withdrawn
-
2010
- 2010-09-22 ES ES10760924.0T patent/ES2535527T3/en active Active
- 2010-09-22 WO PCT/EP2010/005808 patent/WO2011035903A2/en active Application Filing
- 2010-09-22 EP EP10760924.0A patent/EP2480118B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011035903A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011035903A3 (en) | 2011-07-07 |
DE102009042867A1 (en) | 2011-04-07 |
WO2011035903A2 (en) | 2011-03-31 |
EP2480118B1 (en) | 2015-02-25 |
ES2535527T3 (en) | 2015-05-12 |
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