EP2822441B1 - Dispositif permettant de déplacer des turbines de lavage pour dispositifs de lavage et/ou de séchage - Google Patents

Dispositif permettant de déplacer des turbines de lavage pour dispositifs de lavage et/ou de séchage Download PDF

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Publication number
EP2822441B1
EP2822441B1 EP13720566.2A EP13720566A EP2822441B1 EP 2822441 B1 EP2822441 B1 EP 2822441B1 EP 13720566 A EP13720566 A EP 13720566A EP 2822441 B1 EP2822441 B1 EP 2822441B1
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EP
European Patent Office
Prior art keywords
arm
rotary sprayer
wash
wash chamber
rotary
Prior art date
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EP13720566.2A
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German (de)
English (en)
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EP2822441A1 (fr
Inventor
Enzo Brignone
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Bitron SpA
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Bitron SpA
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    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants

Definitions

  • the present invention relates to a device for moving washing impellers or sprayers within wash chambers of washing appliances. Said device is applied to a washing and/or drying machine, e.g. a dishwasher.
  • a washing and/or drying machine e.g. a dishwasher.
  • Dishwashers which, for washing crockery in the wash chamber, comprise at least two rotary sprayers, e.g. a rotary sprayer for washing the upper portion of the chamber, in particular crockery arranged on an upper rack, if available, and a lower rotary sprayer for washing the lower portion of the same wash chamber, in particular crockery arranged on a lower rack.
  • said washing machines comprise two racks, i.e. a first upper rack and a second lower rack, each associated with at least one rotary sprayer.
  • the rotary motion of the sprayer is attained by exploiting the inclination of the water jet generated by a plurality of nozzles.
  • the nozzles are appropriately arranged in a manner such that the force of the exiting water generates an equal and opposite force onto the sprayer, which will thus rotate, e.g. about a vertical axis.
  • a further problem observed during the washing for the lower rotary sprayer relates to the possibility that the latter might strike against improperly positioned crockery, such as cutlery, which might obstruct the sprayer as it turns, thus preventing it from correctly washing some areas of the rack.
  • the lower rotary sprayer comprises nozzles having greater diameters than the other rotary sprayers, so as to ensure a stronger impact of the water against the crockery, resulting however in higher water consumption.
  • Rotary sprayers are also known which are removably mounted to the bottom base of the wash chamber and which are adapted to rotate, under the hydrodynamic thrust of water exiting through a plurality of nozzles, about a vertical axis located at the centre of the wash chamber.
  • Such a rotary sprayer for washing the central portion of the wash chamber comprises just a single jet that directs a water jet along said axis of rotation, thus reducing the cleaning power in the central part of the wash chamber.
  • Arms are also known, whereto one or more rotary sprayers may be secured in different manners. Normally, such arms are idle and are mounted on rolling bearings. Such devices are moved by the hydrodynamic thrust of water. In fact, the hydrodynamic thrust of water causes the sprayers to rotate and, through a satellite movement, also moves said arm. This solution does not allow to determine the position of the arm and, as a consequence, the position of the rotary sprayer within the wash chamber, in particular in which section of the rack it is located.
  • Patent application EP1132039 describes arms adapted to be moved by actuator means. Through a cam system, the arm can, as it moves, move the rotary sprayer along an ellipsoidal orbit. Said actuators allow the arm to rotate by 180° at most, as clearly shown in the drawings.
  • dishwashers comprise an alternate wash assembly adapted to switch and distribute fluid flows from an inlet, connected to a supply circuit, e.g. the water main, or from a closed circuit, to one or more outlets, connected to one or more hydraulic circuits, in turn connected to said one or more rotary sprayers.
  • a supply circuit e.g. the water main
  • outlets e.g. the water main
  • hydraulic circuits e.g. the hydraulic circuits
  • Said alternate wash assembly is actuated by a motor that drives a selector which, depending on its rotation, opens and/or closes one or more hydraulic output circuits in accordance with a predetermined wash program that defines the portion of the wash chamber to be washed.
  • control of the movement device or arm is ensured by an actuator which is independent of the actuator included in the alternate wash assembly. This implies the impossibility of having the sprayer stop at all points, because the actuator only has two positions or states.
  • Arm movement devices are also known wherein an actuator moves said arm, which is associated with at least one rotary sprayer.
  • Such movement devices comprise a part of the mechanism for transmitting motion from the actuator to the device or arm inside the wash chamber. This implies that such mechanism portions must be properly insulated to protect said transmission mechanism against corrosion induced by water and to avoid that dirt residues might deposit into sensitive portions of the device, which might lead to arm seizure.
  • Rotary sprayer movement devices which, through at least two motors, can move a rotary sprayer in an XY plane in order to wash specific sectors of the rack.
  • Such a device requires two actuators in order to move said rotary sprayer in space, and most of the drive mechanisms are within the wash chamber, resulting in the above-mentioned problems of corrosion or dirt accumulation.
  • controlling the proper positioning of the rotary sprayer in the desired point is a very complex task, because at least one position sensor is required for each axis along which said rotary sprayer can move.
  • the duct supplying water to the rotary sprayer be flexible, so that it can follow the sprayer's movements. The necessity of using a flexible duct may cause an interruption in the water flow to the rotary sprayer because of undesired duct occlusions due, for example, to bottlenecks or pressures normally caused by the crockery.
  • Devices for moving the rotary sprayer within the wash chamber which allow said rotary sprayer to be moved through rotation of an arm. Movement is only possible for small angles of rotation; during said movement, moreover, rotation of the rotary sprayer is prevented by, for example, the walls of the wash chamber.
  • Patent application EP 1 090 579 A1 discloses a revolving sprinkling assembly for dishwasher includes a sprinkler and a device for shifting said sprinkler consisting of a mobile support means for the sprinkler and an actuator means for driving the mobile support means.
  • the latter may consist of a rotating shaft provided at the top with a transverse extension at whose free end there is pivoted the sprinkler, so that the axis of rotation of the latter is eccentric with respect to axis of rotation of the shaft, or consist of a translating duct slidably engaged onto a feed box.
  • the shifting of the mobile support means is achieved through a toothed rim or a rack engaged with a gear driven into rotation by a thermo-actuator or by a motor.
  • the present invention aims at solving the above-mentioned technical problems of the prior art by providing a device for rotatably moving at least one rotary sprayer, thus allowing the rotary sprayer to be positioned in the desired zones of the wash chamber.
  • One aspect of the present invention relates to a movement device having the features set out in the appended claim 1.
  • a further aspect of the present invention relates to a dishwasher having the features set out in the appended claim 7.
  • the device for moving at least one rotary sprayer 5, which is adapted to rotate about a first axis "R”, comprises an arm 3 capable of rotating by 360° about a second axis "Z", preferably vertical, on which said rotary sprayer 5 is rotatably mounted; at least one actuating device 2, which is adapted to rotate said arm 3 about said second axis "Z".
  • Said arm is preferably asymmetric and comprises a single rotary sprayer 5 mounted in the proximity of a peripheral portion 33 of the same arm 3.
  • said actuating device 2 connected in the proximity of a coupling portion 32 of arm 3, selectively rotates the same arm 3 in order to position said rotary sprayer 5 at desired angles of rotation of arm 3 about said second axis "Z".
  • said actuating device 2 is connected to arm 3 at coupling portion 32 of arm 3 and to the rest of the structure of the washing appliance equipped with the movement device.
  • said actuating device 2 comprises an actuator 21, preferably one motor and at least one motion transmission mechanism 22, which is adapted to transmit motion from said actuator or motor 21 to said at least one arm 3. More preferably, said motion transmission mechanism 22 comprises at least one shaft 221b fitted on one end to coupling portion 32 of arm 3 and on the opposite end to the shaft of motor 21, so that the second axis of rotation "Z" of arm 3 corresponds to the axis of rotation of shaft 221b.
  • said shaft 221b is fitted on one end to a joining element 30 comprised in said coupling portion 32.
  • said arm 3 is mounted on rolling bearings that allow arm 3 to rotate by 360° about said second axis "Z".
  • Said arm 3 is connected to the hydraulic circuit intended for rotary sprayer 5.
  • arm 3 In addition to supporting associated rotary sprayer 5, arm 3 also acts as a duct for supplying water to rotary sprayer 5.
  • Arm 3 fitted on said second shaft 221b, comprises an internal duct 31 allowing water to flow towards rotary sprayer 5.
  • said arm 3 is an asymmetric arm, since it comprises a coupling portion 32 in the proximity of one end of said arm 3 and a peripheral portion 33 at the opposite end of said arm 3, on which at least one rotary sprayer 5 is mounted. Said coupling portion 32 also defines a first portion of duct 31, thereby allowing the fluids to flow towards rotary sprayer 5.
  • Said washing and/or drying machine is preferably a dishwasher 1 comprising an outer casing 10, a wash chamber 11, at least one rotary sprayer 5 for distributing wash fluid for washing crockery, as shown by way of example in Figure 8 .
  • said movement device is located in the proximity of an alternate wash assembly 4 adapted to switch and distribute fluid flows from an inlet 44, connected to a supply circuit, to one or more outlets (43a, 43b), connected to one or more hydraulic circuits.
  • an alternate wash assembly 4 adapted to switch and distribute fluid flows from an inlet 44, connected to a supply circuit, to one or more outlets (43a, 43b), connected to one or more hydraulic circuits.
  • Inlet 44 of said alternate wash assembly 4 is connected to a wash pump, which takes water from a water collecting sump 6, located in the proximity of said arm 3, thereby creating a closed supply circuit; said one or more outlets 43a, 43b are connected to as many hydraulic circuits, which are adapted to transport fluids, e.g. water, to the various zones of the wash chamber for distribution.
  • said alternate wash assembly comprises a first outlet 43a, which is connected to a hydraulic circuit adapted to supply an upper rotary sprayer (not shown); and a second outlet 43b, which is connected to a hydraulic circuit adapted to supply lower rotary sprayer 5.
  • said alternate wash assembly 4 shown by way of example in Figures 6A, 6B and 6C , comprises a chamber 41 in which a selector 42 is arranged. Said selector 42 is adapted to selectively open and/or close one or more outlets (43a, 43b) depending on which hydraulic circuit must be activated and/or deactivated.
  • said selector 42 is moved by means of said actuating device 2.
  • selector 42 in use may vary depending on design specifications.
  • the operation of the alternate wash assembly 4 will not be described in detail herein, since it is known to those skilled in the art.
  • chamber 41 internally comprises at least one heating means 46, e.g. a resistor, adapted to selectively heat the fluid, e.g. water, that must be directed to the various hydraulic circuits connected to alternate wash assembly 4.
  • heating means 46 allows to eliminate the pressure switch normally included in prior-art dishwashers 1, along with the associated take-off on sump 6 and welding of the sump 6.
  • Said at least one heating means 46 comprises safety devices 461, which are connected to a central control unit 8.
  • said safety devices 461 are electric/pneumatic and comprise at least one sensor 462 and a switch adapted to determine the temperature and/or the pressure of the fluid and to deactivate said at least one heating means 46 when a preset temperature is reached or if the pressure drops.
  • temperature sensor 462 is monitored by said control unit 8, which, when it detects a temperature equal to or higher than a preset maximum temperature, will turn off heating device 46 by opening the electric circuit.
  • sensor 462 will either open the switch directly or send a signal, e.g. to control unit 8, for opening the switch and turning off heating means 46.
  • said control unit 8 will open the switch, thereby opening the circuit of heating device 46, should any current dispersion occur which might be potentially dangerous for the user of dishwasher 1.
  • said alternate wash assembly 4 may comprise a third outlet 43c adapted to be connected to a hydraulic circuit comprising a water recovery container (not shown in the drawings) or a drying device.
  • said actuating device 2 comprises an actuator 21, preferably a single motor, and at least one motion transmission mechanism 22, adapted to transmit motion from said actuator or motor 21 to said at least one arm 3.
  • Said motion transmission mechanism 22 may also be adapted to transmit motion from said actuator or motor 21 to said at least one alternate wash assembly 4.
  • said arm 3 is located within wash chamber 11; instead, said at least one actuating device 2 is external to the same wash chamber 11 of said washing machine 1 whereto said movement device has been applied.
  • said actuating device 2 is preferably arranged underneath the bottom base of wash chamber 11, thus being protected against the action of water, and particularly not being in direct contact with either the wash water or dirt residues resulting from the various wash steps, so that any corrosion or seizure of the motion transmission mechanisms 22 is prevented.
  • Said actuating device 2 is in turn controlled by a central control unit 8 for the purpose of allowing said at least one arm 3 to be placed into desired positions inside the wash chamber for predetermined time periods.
  • central control unit 8 is susceptible of being connected to said motor 21.
  • said central control unit 8 is adapted to execute a wash program of same dishwasher 1, which specifies the positions and the stop times of rotary arm 3 within wash chamber 11.
  • Said control unit 8 may be connected to a memory unit 81 storing at least one wash program.
  • Said control unit 8 may possibly comprise said memory unit 81.
  • arm 3 is always positioned in such a way that rotary sprayer 5 is in a predetermined sector of wash chamber 11.
  • arm 3 may possibly stop in a predetermined position prior to the beginning of the next wash cycle.
  • Central control unit 8 is adapted to activate other devices normally included in dishwasher 1 and to monitor a plurality of sensors which are useful for controlling the same dishwasher. Such devices and sensors will not be described in detail herein, since they are known to those skilled in the art.
  • arm 3 is rotatably supported around a fixed axis, preferably around said second axis "Z", which is located in the proximity of the centre of the base of wash chamber 11.
  • said arm 3 is located in the proximity of sump 6 comprised in wash chamber 11.
  • Rotary arm 3 has a predetermined revolution speed.
  • the revolution speed of arm 3 may be a multiple or submultiple of the revolution speed of selector 42 of the alternate wash assembly.
  • said motion transmission mechanism 22 comprises a shaft 221b fitted on one end to a joining element 30 of arm 3 and on the opposite end to the shaft of motor 21.
  • Said motor 21 is an electric motor, e.g. a step motor, as normally used for the devices included in the dishwasher.
  • the maximum torque of said motor 21 is limited in order to avoid any damage to actuating device 2 which might be due, for example, to an improperly positioned piece of cutlery stopping the rotation of the arm.
  • said motion transmission mechanism 22 comprises a first shaft 221a fitted on one end to said selector 42 of the alternate assembly 4 and on the opposite end to the shaft of motor 21; a second shaft 221b is fitted on one end to a joining element 30 of arm 3 and on the opposite end to a pinion 222b, which meshes with a crown wheel 222a mounted to said first shaft 221a.
  • the ratio between said crown wheel 222a and said pinion 222b is such that the revolution speed of the first shaft 221a is a multiple of the revolution speed of said second shaft 221b.
  • said actuating device 2 comprises at least one sensor 24 adapted to detect the position of said at least one arm 3 within wash chamber 11 of a washing machine 1, and possibly also the position of selector 42 of the alternate wash assembly.
  • Said at least one sensor 24 is, for example, an encoder, mounted to said shaft 221b and adapted to determine the direction of rotation of arm 3 and the absolute position thereof within wash chamber 11, with a predetermined uncertainty, as a function of the rotation of shaft 221b.
  • Said at least one sensor 24 may be a position sensor of any type, such as, for example, capacitive, resistive, inductive, etc.
  • Said at least one sensor 24 is susceptible of being connected to said control unit 8 for the purpose of determining the position of arm 3, so that rotary sprayer 5 can be positioned as required within the wash chamber.
  • said sensor 24 allows rotary sprayer 5 to be positioned in a desired zone of wash chamber 11 through an appropriate movement of arm 3.
  • control unit 8, depending on the data received from said sensor 24, can operate motor 21 in a manner such as to place rotary sprayer 5 into the desired position by rotating said arm 3.
  • Said arm 3 is connected to the hydraulic circuit intended for lower rotary sprayer 5.
  • arm 3 is mounted through fastening means 62 to said second outlet 43b, which is located in a housing within sump 6.
  • arm 3 In addition to supporting associated rotary sprayer 5, arm 3 also acts as a duct to supply water to rotary sprayer 5, e.g. from the second outlet 43b of alternate assembly 4, to which it is connected.
  • said arm 3 is mounted on, rolling bearings that allow arm 3 to rotate by 360° about said second axis "Z".
  • arm 3 is fitted to said second shaft 221b, but comprises an internal duct 31 allowing water to flow from the alternate wash assembly 4 to rotary sprayer 5.
  • said arm 3 is an asymmetric arm, since it comprises a coupling portion 32 in the proximity of one end of said arm 3, and a peripheral portion 33 at the opposite end of said arm 3, where only one rotary sprayer 5 is mounted.
  • Said coupling portion 32 comprises said joining element 30 fitted to said shaft 221b, so that the second axis of rotation "Z" of arm 3 corresponds to the axis of rotation of shaft 221b.
  • Said coupling portion 32 also defines a first portion of duct 31, thereby allowing fluids to flow, for example, from said alternate wash assembly 4 to rotary sprayer 5.
  • said arm 3 is made of plastic material, comprising an upper portion 3a and a lower portion 3b that can be removably combined together, as shown in Figures 4A and 5A .
  • said joining element 30 comprises at least one torque limiting means 23 adapted to disengage arm 3, preferably arranged in said coupling portion 32.
  • torque limiting means 23 comprises a selective abutment element 231 appropriately associated with said joining element 30, which is adapted to abut against the inner walls of internal duct 31 in coupling portion 32; an elastic means 232, e.g. a spring, and a top element 233.
  • torque limiting means 23 of the first embodiment is such that, following the release of arm 3, a new balance point will be reached after a rotation of shaft 221b by approximately 360°, so that it can rotate about said second axis "Z", driven by said motor 21.
  • This torque limiting means 23 has one balance point.
  • joining element 30 comprises an abutment portion 234 made of ferrous or ferromagnetic material, which is adapted to abut against a magnetic element 235, so that interference therebetween is generated through magnetic effect, thereby allowing motion to be transmitted to arm 3 by shaft 221b.
  • a predetermined torque value of shaft 221b is exceeded, the magnetic force between abutment portion 234 and interference element 235 becomes smaller than the force applied to arm 3, so that abutment element 234 will move away from magnetic element 235, thereby preventing motion from being transmitted to said arm 3.
  • This torque limiting means 23 therefore, has only one balance point when abutment element 234 is in the proximity of magnetic element 235, preferably when they face towards each other, so that the magnetic force will tend to hold them abutted against each other.
  • said rotary sprayer 5 is a symmetric satellite sprayer rotating about said first axis of rotation "R", which is parallel to the second axis of rotation "Z" of arm 3.
  • Rotary sprayer 5 has preferably a tapered shape, its dimensions, e.g. in the longitudinal direction, being smaller than the standard dimensions used for conventional lower rotary sprayers.
  • the longitudinal extension of rotary sprayer 5, which is secured to arm 3 in accordance with the present invention is at most equal to half the smallest dimension of the base of wash chamber 11.
  • said rotary sprayer 5 is mounted onto a suitable through housing 34 comprised in peripheral portion 33 of arm 3.
  • Said housing 34 is adapted to allow rotary sprayer 5 to rotate freely, as well as to allow the wash fluid to flow towards said rotary sprayer 5.
  • the same rotary sprayer 5 comprises an engagement mouth 52, which is adapted to fit into said housing 34 to allow the fluid to flow into rotary sprayer 5 and come out through a plurality of nozzles 51 in order to hit the crockery arranged in a lower rack positioned inside wash chamber 11 of dishwasher 1.
  • Said nozzles 51 are appropriately arranged on said rotary sprayer 5, preferably on the upper portion of said rotary sprayer 5, and have predetermines sizes.
  • the sizes of said nozzles 51 are smaller than the average sizes of the nozzles comprised in the lower rotary sprayers currently available on the market.
  • Said engagement mouth 52 comprises removable locking means 53, e.g. interference means, which are adapted to retain said rotary sprayer 5 in order to prevent it from accidentally detaching from said arm 3.
  • removable locking means 53 e.g. interference means, which are adapted to retain said rotary sprayer 5 in order to prevent it from accidentally detaching from said arm 3.
  • Internal duct 31 of arm 3, under said suitable housing 34, comprises a protuberance 311 which is appropriately shaped to avoid any fluid flow turbulences in duct 31 and to direct the same fluid into rotary sprayer 5.
  • arm 3 according to the present invention comprises at least one nozzle 51 to increase the wash power, preferably located in upper portion 3a of the same arm 3.
  • the movement device according to the present invention can be applied to a vapor circuit or to a hydraulic circuit for water at a higher temperature than the fluid coming from alternate wash assembly 4.
  • internal duct 31 of arm 3 can be used for conducting water vapor towards the same rotary sprayer 5 when the latter is positioned under the crockery, for improving the washing or drying action.
  • the longitudinal extension of rotary sprayer 5 according to the present invention is half the longitudinal extension of current lower rotary sprayers.
  • the movement of arm 3 about said second vertical axis "Z" and the small dimensions of rotary sprayer 5 allow to wash a portion of the rack, e.g. only one fourth of the rack, thus reducing the water consumption, also because of the smaller number of nozzles 51.
  • the longitudinal dimension of arm 3 is smaller than 12.5 cm, while the rotary sprayer has a longitudinal extension of less than 25 cm.
  • the number of nozzles 51 of lower rotary sprayer 5 is halved.
  • arm 3 allows arm 3 to be positioned in a manner such that the fluid jets from nozzles 51 of arm 3 and/or of rotary sprayer 5 are at least partly directed towards a detergent dispenser 14 comprised in dishwasher 1, into which the user has previously poured a predetermined quantity of detergent.
  • a detergent dispenser 14 comprised in dishwasher 1, into which the user has previously poured a predetermined quantity of detergent.
  • the possibility of intentionally directing the fluid jets towards said detergent dispenser allows dissolving the detergent into the fluid as a function of the wash step to be carried out.
  • rotary sprayer 5 and the rotation of arm 3 about said second vertical axis "Z" allow to improve the washing in the central zone of wash chamber 11 of dishwasher 1, by improving the trajectories of the fluid jets coming from the rotary sprayer.
  • the smaller number of nozzles 51 and the possibility of changing the position of rotary sprayer 5 within wash chamber 11 ensure a lower consumption of liquid, in particular water, used for washing the crockery.
  • the smaller quantity of wash water required allows to reduce the capacity of the wash pump and the power of the associated motor, resulting in lower production costs.
  • Positioning the rotary sprayer into particular sectors of wash chamber 11 allows to improve the wash performance, in that it is possible to change the stop times of rotary sprayer 5 in the various positions depending on the wash program in execution.
  • the movement device according to the present invention allows to position the rotary sprayer in the desired zones of wash chamber 11 through the use of a simple actuating device. Furthermore, the movement device is safe and immune from malfunctions or damage typically suffered by prior-art devices, because motion transmission mechanism 22 is insulated and cannot be corroded by wash fluids, nor can it be subject to dirt accumulation, which might damage the mechanism itself.

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  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Centrifugal Separators (AREA)

Claims (11)

  1. Dispositif de déplacement d'au moins un pulvérisateur rotatif (5) pour des appareils de lavage ou de séchage, qui est adapté pour tourner autour d'un premier axe (R) ;
    ledit dispositif de déplacement comprend :
    un bras (3) activé pour tourner autour d'un second axe (Z), sur lequel ledit pulvérisateur rotatif (5) est monté de manière à pouvoir tourner ;
    au moins un dispositif d'actionnement (2) pour la rotation dudit bras (3) autour dudit second axe (Z),
    ledit bras :
    - est adapté pour tourner à 360°
    - est asymétrique et
    - comprend un seul pulvérisateur rotatif (5) monté à proximité d'une partie périphérique du même bras (3) ;
    ledit dispositif d'actionnement (2), relié à proximité d'une partie de couplage (32) du bras (3), tourne sélectivement le même bras (3),
    à des fins de positionnement dudit pulvérisateur rotatif (5) selon des angles de rotation souhaités du bras (3) autour dudit second axe (Z) ;
    ledit dispositif d'actionnement (2) comprend :
    - un moteur (21) et
    - au moins un mécanisme de transmission de mouvement (22) pour transmettre le mouvement dudit moteur (21) audit au moins un bras (3) ;
    ledit dispositif d'actionnement (2) est relié à la partie de couplage (32) du bras (3) ;
    caractérisé en ce que ledit mécanisme de transmission de mouvement (22) comprend un arbre (221b) monté à une extrémité sur la partie de couplage (32) du bras (3) et à l'extrémité en regard sur l'arbre du moteur (21).
  2. Dispositif selon la revendication 1, dans lequel ledit bras (3) est situé dans une chambre de lavage (11) ; ledit au moins un dispositif d'actionnement (2) est externe à la même chambre de lavage (11) comprise dans une machine de lavage (1), à laquelle le dispositif de déplacement a été appliqué.
  3. Dispositif selon la revendication 1, dans lequel ledit dispositif d'actionnement comprend au moins un capteur (24) adapté pour déterminer la direction de rotation du bras (3) et la position absolue dudit au moins un bras (3) dans la chambre de lavage (11) d'une machine de lavage (1), à laquelle ledit dispositif a été appliqué, permettant au pulvérisateur rotatif (5) d'être positionné dans une zone souhaitée de la chambre de lavage (11) par une rotation appropriée du bras (3).
  4. Dispositif selon la revendication 1 ou 3, dans lequel ledit dispositif d'actionnement (2) est à son tour contrôlé par une unité de contrôle centrale (8) afin de permettre audit au moins un bras (3) d'être placé dans des positions souhaitées dans la chambre de lavage pour des périodes de temps prédéterminées.
  5. Dispositif selon l'un quelconque des revendications précédentes, dans lequel ladite partie de couplage (32) du bras (3) définit une première partie du conduit (31), permettant par là-même aux fluides de s'écouler vers le pulvérisateur rotatif (5).
  6. Dispositif selon la revendication 1, dans lequel ledit au moins un mécanisme de transmission de mouvement (22) comprend des moyens de limitation de couple (23) adaptés pour désengager le bras (3).
  7. Lave-vaisselle (1) comprenant un boîtier extérieur (10), une chambre de lavage (11), au moins un pulvérisateur rotatif (5) pour la distribution de fluide de lavage pour le lavage de vaisselle ;
    caractérisé en ce qu'il comprend au moins un dispositif de déplacement selon la revendication 1.
  8. Lave-vaisselle selon la revendication 7, dans lequel le bras (3) est supporté de manière à pouvoir tourner autour d'un axe fixe situé à proximité du centre de la base de la chambre de lavage (11).
  9. Lave-vaisselle selon la revendication 7, qui comprend une unité de contrôle centrale (8) pour exécuter un programme de lavage du même lave-vaisselle (1) qui spécifie les positions et temps d'arrêt du bras rotatif (2) dans la chambre de lavage (11).
  10. Lave-vaisselle selon la revendication 7 ou 9, dans lequel à la fin du cycle, le bras (3) est situé dans une position prédéterminée.
  11. Lave-vaisselle selon la revendication 8, dans lequel le bras (3) peut être positionné de telle manière que les jets de fluide d'une pluralité de buses (51) du bras (3) et/ ou du pulvérisateur rotatif (5) soient au moins en partie dirigés vers un distributeur de détergent (14) compris dans le lave-vaisselle (1).
EP13720566.2A 2012-03-08 2013-03-07 Dispositif permettant de déplacer des turbines de lavage pour dispositifs de lavage et/ou de séchage Active EP2822441B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000200A ITTO20120200A1 (it) 2012-03-08 2012-03-08 Dispositivo per la movimentazione di giranti di lavaggio per dispositivi di lavaggio e o asciugatura.
PCT/IB2013/051816 WO2013132459A1 (fr) 2012-03-08 2013-03-07 Dispositif permettant de déplacer des turbines de lavage pour dispositifs de lavage et/ou de séchage

Publications (2)

Publication Number Publication Date
EP2822441A1 EP2822441A1 (fr) 2015-01-14
EP2822441B1 true EP2822441B1 (fr) 2016-05-04

Family

ID=46001502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13720566.2A Active EP2822441B1 (fr) 2012-03-08 2013-03-07 Dispositif permettant de déplacer des turbines de lavage pour dispositifs de lavage et/ou de séchage

Country Status (6)

Country Link
EP (1) EP2822441B1 (fr)
CN (1) CN104271024B (fr)
ES (1) ES2587941T3 (fr)
IT (1) ITTO20120200A1 (fr)
PL (1) PL2822441T3 (fr)
WO (1) WO2013132459A1 (fr)

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WO2022157063A1 (fr) * 2021-01-25 2022-07-28 BSH Hausgeräte GmbH Lave-vaisselle domestique

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CN103658085B (zh) * 2013-12-02 2015-07-15 东正科技有限公司 一种自润滑旋转清洗器
EP2893862B1 (fr) * 2014-01-13 2017-11-29 Miele & Cie. KG Lave-vaisselle
CN104523208B (zh) * 2015-01-08 2017-08-25 佛山市顺德区美的洗涤电器制造有限公司 喷臂装置及洗碗机
WO2017108072A1 (fr) 2015-12-21 2017-06-29 Electrolux Appliances Aktiebolag Lave-vaisselle comportant un agencement de bras de lavage
CN106618419B (zh) * 2016-12-02 2024-01-16 宁波方太厨具有限公司 一种湍流清洗的水槽清洗机
WO2019086108A1 (fr) * 2017-10-31 2019-05-09 Electrolux Appliances Aktiebolag Ensemble bras gicleur de lave-vaisselle
WO2019086107A1 (fr) 2017-10-31 2019-05-09 Electrolux Appliances Aktiebolag Ensemble bras de lavage
US11464391B2 (en) 2017-10-31 2022-10-11 Electrolux Appliances Aktiebolag Spray arm assembly
TR201817561A2 (tr) * 2018-11-21 2020-06-22 Arcelik As Bi̇r bulaşik maki̇nesi̇
DE102019211403A1 (de) 2019-07-31 2021-02-04 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine
DE102019211410A1 (de) 2019-07-31 2021-02-04 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine
DE102019211429A1 (de) 2019-07-31 2021-02-04 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine
US11464389B2 (en) * 2019-09-30 2022-10-11 Midea Group Co., Ltd. Dishwasher with image-based detergent sensing
US11484183B2 (en) 2019-09-30 2022-11-01 Midea Group Co., Ltd. Dishwasher with image-based object sensing
US11399690B2 (en) 2019-09-30 2022-08-02 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11202550B2 (en) 2019-11-20 2021-12-21 Midea Group Co., Ltd. Dishwasher thermal imaging system

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DE1259034B (de) * 1964-12-22 1968-01-18 Constructa Werke Ges Mit Besch Vorrichtung zum Erzeugen von Spruehstrahlen, insbesondere fuer eine Geschirrspuelmaschine
IT248022Y1 (it) * 1999-05-03 2002-12-09 Electrolux Zanussi Elettrodome Lavastoviglie con mulinello irroratore epicicloidale
IT1313319B1 (it) * 1999-10-01 2002-07-17 Smeg Spa Gruppo irroratore girevole per lavastoviglie dotato di dispositivo per lo spostamento orizzontale.
IT1317138B1 (it) * 2000-03-08 2003-05-27 Bonferraro Spa Gruppo irroratore girevole per lavastoviglie dotato di dispositivo per lo spostamento orizzontale
DE102009007297A1 (de) * 2009-02-03 2010-08-12 Miele & Cie. Kg Spülautomat mit einem quaderförmigen Spülraum
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Also Published As

Publication number Publication date
CN104271024B (zh) 2018-01-30
WO2013132459A1 (fr) 2013-09-12
ES2587941T3 (es) 2016-10-27
EP2822441A1 (fr) 2015-01-14
PL2822441T3 (pl) 2016-11-30
CN104271024A (zh) 2015-01-07
ITTO20120200A1 (it) 2013-09-09

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