EP3435829B1 - Granulatventilanordnung für eine geschirrspülvorrichtung - Google Patents

Granulatventilanordnung für eine geschirrspülvorrichtung Download PDF

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Publication number
EP3435829B1
EP3435829B1 EP17716323.5A EP17716323A EP3435829B1 EP 3435829 B1 EP3435829 B1 EP 3435829B1 EP 17716323 A EP17716323 A EP 17716323A EP 3435829 B1 EP3435829 B1 EP 3435829B1
Authority
EP
European Patent Office
Prior art keywords
granule
valve
basket
granules
liquid
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
EP17716323.5A
Other languages
English (en)
French (fr)
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EP3435829A1 (de
Inventor
Mats JÖNSSON
Amir JASAREVIC
Per Walter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nordisk Clean Solutions AB
Original Assignee
Granuldisk AB
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 Granuldisk AB filed Critical Granuldisk AB
Publication of EP3435829A1 publication Critical patent/EP3435829A1/de
Application granted granted Critical
Publication of EP3435829B1 publication Critical patent/EP3435829B1/de
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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
    • A47L15/0094—Washing or rinsing machines for crockery or tableware cleaning with abrasive solid particles, e.g. by blasting the crockery with liquid containing granules
    • 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
    • A47L15/4445—Detachable 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/07—Status of hydraulic components, e.g. open/close status of water inlet/outlet valves, operating position of water diverters
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/18—Liquid and granule

Definitions

  • the present disclosure relates to a granule valve arrangement for a dishwashing apparatus, and more particularly to a granule valve arrangement comprising a removable granule basket arranged on a granule valve for a granule dishwashing apparatus, a dishwashing apparatus and method for operating the same.
  • a granule valve arrangement for a granule dishwashing apparatus comprising a removable granule basket removably arranged on a granule valve, said granule valve is arranged to be altered between a closed position, wherein a valve head covers an aperture in the bottom of the granule basket for collecting granules in the granule basket, and an open position, wherein the valve head is moved upwards so that granules can pass from the granule basket through the aperture in the bottom of the granule basket into the granule valve.
  • the valve head has a conical cavity arranged on top of the valve cone and a cylindrical lower flange of the valve head rests around an aperture on a bottom end of the upper portion of the granule basket, in a closed position.
  • the granule dishwashing apparatus comprises a sensor arranged in the washing tank to detect whether the granule basket is attached to the granule valve in the dishwashing apparatus.
  • the senor is a magnetic or magneto-optical sensor.
  • FIGs. 1-17 illustrate schematically an example arrangement to some embodiments.
  • the same reference signs are used for corresponding features in different figures.
  • the terminology used in the detailed description and drawings of the embodiments is not intended to be limiting.
  • FIG. 1 shows an embodiment of a dishwasher 100 for heavily soiled articles to be washed, for example pots, pans, ovenware, canteens etc., wherein the dishwasher may be arranged to add granules with liquid, including but not limited to water, or water and detergent, or any other suitable liquid for dishwashing that is sprayed under pressure towards the articles to be washed.
  • the dishwasher may be arranged to circulate liquid alternatively with and without granules and/or with and without detergent. Thereby, the dishwashers may be used for washing more sensitive ware, such as crockery, cutlery and glasses, without the granules.
  • the granules may be made of, but is not limited to, plastic material.
  • the hood 107 is movably arranged to the back wall 105 of the stand.
  • the hood 107 may be moved between a closed position as shown in FIG. 1 when the dishwasher is ready for operation, and an open position, in which dishes, preferably on a washing rack or ware holder, may be put into or removed from the chamber.
  • the hood 107 may be moved by means of handles 108 arranged on the exterior of the hood.
  • the dishwasher 100 comprises a liquid or water pump 109 arranged in the lower part of the stand 101, which can operate at different speeds, leading to different liquid pressures and flow of liquid and dishwater with an without granules through an upper rotatable spray arm 110 arranged in the upper part of the chamber 102 and a lower rotatable spray arm 111 arranged in the lower part inside the chamber 102 and connected to the washing liquid conduit system 104a.
  • a liquid or water pump 109 arranged in the lower part of the stand 101, which can operate at different speeds, leading to different liquid pressures and flow of liquid and dishwater with an without granules through an upper rotatable spray arm 110 arranged in the upper part of the chamber 102 and a lower rotatable spray arm 111 arranged in the lower part inside the chamber 102 and connected to the washing liquid conduit system 104a.
  • the pump of the rinse tank 103b may be configured to operate at different speeds, leading to different liquid pressures and flow of liquid through the upper rotatable spray arm 110 and the lower rotatable spray arm 111 being connected to the rinsec liquid conduit system 104b.
  • the rinse liquid conduit system 104b may have a rinsing pipe 112 for providing rinsing liquid, i.e fresh water, circulation water, or any other suitable liquid, with or without rinsing agent, to the upper spray arm 110 and a separate dishwashing pipe 113 for providing dishwater to the upper spray arm 110.
  • rinsing pipe 112 for providing rinsing liquid, i.e fresh water, circulation water, or any other suitable liquid, with or without rinsing agent
  • dishwashing pipe 113 for providing dishwater to the upper spray arm 110.
  • a corresponding arrangement with rinsing pipe and dishwashing pipe is provided for the lower spray arm 111.
  • a low speed is used for washing up crockery, cutlery and glasses and a higher speed is used for pot washing.
  • the speed of the liquid pump and the resulting liquid pressure should be adjusted to the specific dishwasher and the type of glassware or pots etc that are going to be washed up.
  • the liquid pump 109 and draining pump 115 are connected to the washing tank 103a through the washing liquid conduit system 104a.
  • the liquid pump 109 may be configured to operate at different speeds, leading to different water pressures and flows. A low speed is used for washing up crockery, cutlery and glasses and a higher speed is used for pot washing, with or without granules.
  • the granules may be made of, but is not limited to, different plastic material preferably soft enough not to harm pans or the wash system, but hard enough to remove food from pots and pans.
  • the lower part of the dishwasher may also comprise a removable granule container or basket 117, where the granules may be collected, separated from the liquid and removed from the dishwasher. This granule basket 117 may be provided with a granule valve 118 together forming a granule valve arrangement, for controlling the addition/collection of granules to/from the liquid in response to the washing program being run.
  • the speed of the liquid pump and the resulting liquid pressure through the spray arms 110, 111 may be adjusted to the specific machine and what type of glassware or pots that are going to be cleaned.
  • the liquid pump 109 can also be driven by a standard electric motor, which is controlled by a speed regulator, such as a frequency changer or a variable-frequency drive. This gives more flexibility and several different speeds and liquid flows with and without granules can be provided.
  • FIG. 2 shows the rotatable spray arm 110, 111 according to an embodiment for a dishwashing apparatus as shown in FIG. 1 .
  • the upper and lower rotatable spray arms 110, 111 may have identical features and may be connected to the conduit system 104 in the same way and provide the same functional characteristics in operation. However, for the sake of simplicity only one of the rotatable spray arms 110, 111 will be described in detail herein.
  • the spray arm 110 may comprise an elongated surface member 200 and an opposite elongated casing 202 on both sides of a center section 203.
  • the elongated surface member 200 and the elongated casing 202 are assembled together, for example but not limited to a snap connection, forming an inside chamber of the spray arm 110 with number of channels for rinsing and dishwashing liquid.
  • the elongated surface member 200 may be provided with a number of spray outlets, including spray jets or holes 204 for rinsing liquid, which are distributed along a first edge 205a of the surface member 200 on one side of the center section 203 and along a corresponding second edge 206a of the surface member 200 on the other side of the center section 203, which is illustrated in FIG 2 .
  • the elongated surface member 200 and casing 202 may be formed by, but not limited to, injection-molded plastic material.
  • the spray jets 204 are inclined at any angle ⁇ (see FIG. 9 ) in the range of: 0 ⁇ ⁇ ⁇ 90, preferably but not limited to about 20°, in relation to the rotational axis Z ( FIG. 1 ) of the spray arm when it is arranged in the dishwasher" from the inside chamber towards the edge along which the spray jets are disposed.
  • ⁇ any angle ⁇ (see FIG. 9 ) in the range of: 0 ⁇ ⁇ ⁇ 90, preferably but not limited to about 20°, in relation to the rotational axis Z ( FIG. 1 ) of the spray arm when it is arranged in the dishwasher" from the inside chamber towards the edge along which the spray jets are disposed.
  • the spray arm 110 will be rotating in dependence on the amount and pressure of the rinsing liquid being pumped through the rinse liquid conduit system 104b into the spray arm 110 further through the spray jets 204.
  • the elongated surface member 200 may be provided with additional spray outlets, including a number of spray nozzles 212a-f for dishwashing liquid, three of which are distributed along a third edge 205b of the surface member 200 on one side of the center section 203 and the other three along a corresponding fourth edge 206b of the surface member 200 on the other side of the center section 203, which is illustrated in FIG 2 .
  • the spray nozzles 212a-f are disposed at any suitable angle ⁇ in the range of 0 ⁇ ⁇ 90°, preferably but not limited to about 20°, in relation to the length of the spray arm 110.
  • dishwashing liquid flowing through the spray arm and out from the angled nozzles creates a force making the spray arm to rotate around its center section 203.
  • the spray arm 110 will be rotating in dependence on the amount and pressure of the dishwashing liquid being pumped through the conduit system 104 into the spray arm 110 further through the dishwashing channels (described below) and the spray nozzles 212a-f.
  • the spray nozzles 212a-c may be located at different individual distances from the center section than the spray nozzles 212d-f, thereby achieving good flow coverage, preferably overlapping, in the dishwashing chamber 104 for an improved dishwashing result.
  • FIG. 3 shows the rotatable spray arm 110 as shown in FIG. 1 with an inlet connection 203a at the centre section 203 configured for rotatable connection to the conduit system 104, 104a, 104b.
  • the connection 203a has a rinsing inlet 220 for guiding rinsing water into rinsing channels 230, 231 and a dishwater inlet 222 for guiding dishwater/liquid with or without granules into washing channels 232-234 and 235-237.
  • the rinsing inlet 220 and the dishwater inlet 222 are separate, the rinsing inlet 220 may have a filter 225 for preventing granules in the dishwater to pass into the rinsing channel of the spray arm 110, which otherwise may lead to clogged spray jets 204.
  • the spray arm is, however, not limited to one rinsing channel and three dishwashing channels on each side of the center section.
  • the spray arm may have 1, 2, 3 or more rinsing channels and/or 2, 3, 4 or more individual washing channels on each side of the center connection in other embodiments of the spray arm.
  • each end portion 242-244 has an inclined, curved or rounded shape 252-254, thereby guiding the dishwater with or without granules from the washing channels 232-234 towards the nozzles.
  • the shape of the channels may be narrowing from the center section 203 towards the nozzles, which may be provided by a continuous variation of the radius of the snip/rounded corners along the channels and shape of the end portions may be narrowing or angled in line with the nozzles.
  • the shape of the end portions of the washing channels and the angled nozzles may even create a combined effect to increase the moving and rotational force by means of flowing dishwashing liquid for rotating the spray arm.
  • the spray arm 110 will be rotating in dependence on the amount and pressure of the dishwashing liquid being pumped through the conduit system 104 into the spray arm 110 further through the dishwashing channels 232-237 and the spray nozzles 212a-f.
  • FIG. 6 is a perspective view of a portion of a rotatable spray arm 348 according to another embodiment for a dishwashing apparatus as shown in FIG. 1 .
  • the spray arm 348 may comprise an elongated surface member 300 and an opposite elongated casing 302 on both sides of a center section 303.
  • the elongated surface member 300 and the elongated casing 302 are assembled together, for example but not limited to screw fastening 350, forming an inside chamber of the spray arm 348 with a number of channels for rinsing water/liquid and washing channels for dishwater/dishwashing liquid with or without granules.
  • the elongated surface 300 may be provided with a number of spray jets or holes 304 for rinsing liquid, which are distributed along a first edge 305a of the surface member 300 on one side of the center section 303 and along an opposite second edge 306a of the surface member 300 on the other side of the center section 303, which is illustrated in FIG 6 .
  • the elongated surface member 300 and casing 302 may be formed by, but not limited to, injection-molded plastic material.
  • the elongated surface member 300 may be provided with a number of spray nozzles for dishwashing liquid, which are distributed on both sides of the center section 303.
  • three spray nozzles 312a-c are distributed along one side of the center section 303 and another three spray nozzles 312 d-f along the other side of the center section 303.
  • still another nozzle 312g is arranged at the center section 303.
  • the spray nozzles 312 a-g may be located at different individual distances from the center section, thereby achieving distributed spray coverage in the dishwashing chamber 102 for an improved dishwashing result.
  • FIG. 7 shows the rotatable spray arm 348 as shown in FIG. 6 with an inlet connection 303a at the centre section 303 configured for rotatable connection to the conduit system 104, 104a, 104b.
  • the connection 303a has a rinsing inlet 320 for guiding rinsing water into rinsing channels 330, 331 and a dishwater inlet 322 for guiding dishwater with or without granules into washing channels 332-334 and 335-337.
  • the rinsing inlet 320 and the dishwater inlet 322 are separate, the rinsing inlet 320 may have a filter 325 for preventing granules in the dishwater to pass into the rinsing channel of the spray arm 348, which otherwise may lead to clogged spray jets 304.
  • the shape of the channels may be narrowing from the center section towards the nozzle and shape of the end portions may be narrowing or angled in line with the nozzles. Dishwater with and without granules are accelerated by means of the particular shape of the end portion, thereby causing self-cleaning of the channel due to "no dead end” and preventing clogging of granules and/or food particles at the end portion of the channel and the connecting nozzles.
  • the rinsing channel 331 may have a rectangular shape in cross section.
  • the spray jets 304 are inclined at any angle ⁇ , preferably but not limited to about 20° in relation to the rotational axis Z, i.e from the inside chamber towards the edge along which the spray jets are disposed.
  • the spray arm 348 will be rotating in dependence on the amount and pressure of the rinsing liquid being pumped through the rinse liquid conduit system 104b into the spray arm 348 further through the spray jets 304.
  • the convex long side walls 315,316 are provided with an elongated concave cut-in portion 317 while two opposite short side walls 318,319 are rectangular as illustrated in FIG. 9 .
  • the side walls 315, 316, 318, 319 may have a curved top edge 327.
  • the nozzles may have in cross section a shape corresponding substantially to an elongated rectangle of which the short sides of the rectangle are rounded or semicircular.
  • the particular shape of the nozzles described herein may provide an advantageous spray pattern from the nozzles and self cleaning of the nozzles making an improved dishwashing effect.
  • FIG. 10 shows a reverse side of the elongated surface member 300 forming an inner side of the spray arm 348, arranged with the rinsing spray jets 304 and holes 322a-g connected to and angled in line with the dishwashing nozzles 312a-g as shown in FIG. 6 .
  • the holes 322a-g may have, but is not limited to, in cross section a shape corresponding substantially to an elongated rectangle of which the short sides of the rectangle are rounded or semicircular.
  • An O-ring sealing 325 or similar sealing made of, but not limited to, rubber, is advantageously arranged around the rinsing channel(s) 330, 331 forming a water tight sealing for preventing leakage of rinsing liquid and dishwashing liquid with and without granules between the rinsing channel(s) 330, 331 and the dishwashing channels 332-337.
  • the O-ring is preferably arranged in a recessed flange 326 on the inside of the surface member 330 forming a tight sealing between the surface member 300 and the casing 302 of the assembled spray arm 348, as shown in FIG. 7 .
  • the dishwasher may be provided with either an upper spray arm or a lower spray arm or both.
  • the upper spray arm and the lower spray arm may be any combination of the embodiments of the spray arms 110, 111, 348, i.e two identical spray arms of the same embodiment or a combination of two different embodiments.
  • the dishwasher 100 is arranged to supply liquid to the upper spray arm 110 for washing, and liquid with or without granules to the lower spray arm 111 for washing. Both spray arms 110, 111 may be supplied with rinsing liquid during the rinsing phase of the washing program.
  • FIG. 11 shows an embodiment of the removable granule container or basket 117 in which granules may be collected and separated from the liquid.
  • the granule basket 117 may be a cylindrical basket, open in the top end 119 and perforated by recesses or holes 120 around the basket. The recesses or holes may be sufficiently wide to allow the passage of liquid but small enough to prevent the passage of granules.
  • the granule basket 117 which is preferably made of any suitable metal or plastic material, may comprise a larger cylindrical upper portion 121 and a smaller cylindrical lower portion 122 assembled together. The larger cylindrical upper portion is both higher and has a larger diameter than the smaller cylindrical lower portion.
  • the basket is provided with two pins 123 (one shown in FIG. 11 ) projecting from opposite sides of the envelope surface of the smaller cylindrical lower portion 122.
  • the basket may be provided with a handle 124 for easy insertion and removal of the granule basket 117 by hand from the dishwasher 100.
  • the cylindrical sleeve 125 may have two L shaped recesses 130, 131 partly around portions of the cylindrical sleeve 125 for receiving the pins 123 of the granule basket 117 for connection of the granule valve 118 to the granule basket 117.
  • the sleeve 125 may be assembled to the branch conduit 126 by means of a knurled nut 132 for easy disassembling/assembling in case of cleaning of the granule valve.
  • the granule basket 117 is removably arranged on the granule valve 118 forming a granule valve arrangement, wherein the pins 123 of the granule basket have been inserted in the corresponding recesses 130, 131 of the cylindrical sleeve 125 of the granule valve 118 by turning the granule basked until the pins 123 reach the end of the recesses 130, 131.
  • a sensor 135, such as a magnetic or magneto-optical sensor, may be arranged in the washing tank 103a in order to detect whether the granule basket is attached to the granule valve 118.
  • the sensor 135 is operatively connected to the circuitry of the electrical cabinet 114 and configured to generate a sensor signal indicating whether the granule basket 117 is located and available for providing granules to the liquid depending on the washing program in operation.
  • FIG 14 illustrates a portion of the granule basket 117 attached to the granule valve 118 forming the granule valve arrangement.
  • a massive "puck" with a conical cavity is arranged as a valve head 136 on top of the valve cone 134.
  • the valve head 136 rests on an edge 137, preferably chamfered, around an aperture 138 in a bottom end 139 of the upper portion 121 of the granule basket 117.
  • the aperture 138 may preferably have a circular shape or any other suitable shape, such as oval or rectangular etc.
  • the valve head 136 has a corresponding shape, and large enough to cover the aperture in a closed position.
  • the bottom end 139 may be perforated by recesses or holes 140 similar to the recesses or holes 120 in the envelope of the cylindrical granule basket 117.
  • the recesses or holes 140 may be sufficiently wide to allow the passage of the liquid flow but small enough to prevent the passage of granules.
  • a liquid flow through the recesses 140 may advantageously prevent granules from getting caught between the valve head 136 and the chamfered edge 137 when the granule valve 118 is moved to a closed position by a downward movement of the valve push rod 133.
  • an upward movement of the valve push rod 133 is generated by a valve lifter arrangement comprising an electric motor 141, which is operatively connected to and controlled by the circuitry and the program control device of the electric cabinet 114.
  • a hinged lever arrangement 142 that may be moved backward and forward (corresponding to a left direction and a right direction in FIG. 15 ) is operatively connected an controlled by the electric motor 141.
  • a backward movement of the hinged lever arrangement 142 causes an upward movement of the valve push rod 133, thereby moving the valve head 136 in to the position as shown in FIG. 15 , i.e in an open position of the granule valve arrangement.
  • a forward movement of the hinged lever arrangement 142 causes a downward movement of the valve push rod 133, thereby moving the valve head 136 in to a position as shown in FIG. 14 , i.e the closed position of the granule valve arrangement.
  • FIG. 11A shows an embodiment of a removable granule container or basket 117a in which granules may be collected and separated from the liquid.
  • the granule basket 117a may be a cylindrical basket, open in the top end covered by a mesh119" for preventing food scrapes or cutlery etc to enter into the basket 117a.
  • the basket 117a is perforated by recesses or holes 120a around the basket. The recesses or holes may be sufficiently wide to allow the passage of liquid but small enough to prevent the passage of granules.
  • the granule basket 117a which is preferably made of any suitable metal or plastic material, may comprise a larger cylindrical upper portion 121a and a smaller cylindrical lower portion 122a assembled together.
  • the larger cylindrical upper portion is both higher and has a larger diameter than the smaller cylindrical lower portion.
  • the basket may be provided with two arched or rectangular wire bows 123a, 123b projecting from opposite sides of the envelope surface of the smaller cylindrical lower portion 122a.
  • the basket may be provided with a handle 124a for easy insertion and removal of the granule basket 117a by hand from the dishwasher 100.
  • the granule valve 118a which may be arranged in the dishwasher as shown in FIG. 1 , is illustrated in further detail in FIG 12A .
  • the granule valve may comprise a wire stand 125a arranged on a branch conduit 126a.
  • the wire stand 125a may comprise an upper part corresponding to the larger cylindrical upper portion 121a and a lower part corresponding to the smaller cylindrical lower portion of the basket 117a.
  • a pipe joint 128a is provided in the lower part of the branch conduit for connection to the conduit system 104, wherein the flow of liquid, with or without granules, may be drawn by means of the liquid pump 109 when the dishwasher is in an operating mode.
  • a draining pipe 129a is provided in the lower part of the branch conduit for connection to the draining pump 115.
  • the wire stand 125a may have two opposite bent portions 130a, 131a of at least one circular wire of the wire stand 125a for receiving the wire bows 123a, 123b of the granule basket 117a for connection of the granule valve 118a to the granule basket 117a.
  • the wire stand 125a may be assembled to the branch conduit 126a by means of a knurled nut 132a for easy disassembling/assembling in case of cleaning of the granule valve.
  • the branch conduit 126a may have a perforated filter plate or mesh arranged either on a top inlet of the conduit 126 or within the conduit.
  • the granule valve 118 further comprises a valve push rod 133a, which extends from the bottom of the branch conduit 126a and the wire stand 125a.
  • the valve push rod 133a is provided with a valve cone 134a at the top end thereof forming a valve plunger, which is arranged to open and close the granule valve arrangement, as will be described below.
  • the granule basket 117a is removably arranged on the granule valve 118a forming a granule valve arrangement, wherein the wire bows 123a, 123b of the granule basket have been inserted in the corresponding opposite bent portions 130a, 131a of the wire stand 125a of the granule valve 118a by turning the granule basked until the bent portions 130a, 131a reach a vertical wire of the wire stand.
  • a sensor 135a such as a magnetic or magneto-optical sensor, may be arranged in the washing tank 103a in order to detect whether the granule basket is attached to the granule valve 118a.
  • the sensor 135 is operatively connected to the circuitry of the electrical cabinet 114 and configured to generate a sensor signal indicating whether the granule basket 117a is located and available for providing granules to the liquid depending on the washing program in operation.
  • FIG. 15A illustrates the granule valve arrangement including the removable granule basket 117a assembled with the granule valve 118a inserted in the dishwasher in an operative position.
  • the basket is arranged in a hole 119a' in the bottom of the sink 106a, wherein the circular top end 119a of the granule basket is located at the same level as the bottom of the sink.
  • the hole 119a' in the bottom of the sink and the circular top end 119a have corresponding diameters, so that granules cannot pass there between into the washing tank 103a.
  • the circular top end 119a may have a flange that may rest on the edge of the hole 119a', when the granule basket is inserted into the dishwasher.
  • a massive "puck" with a conical cavity is arranged as a valve head 136a on top of the valve cone 134a.
  • a cylindrical lower flange 137a of the valve head 136a rests around an aperture 138a on a bottom end 139a of the upper portion 121a of the granule basket 117a.
  • the aperture 138a may preferably have a circular shape or any other suitable shape, such as oval or rectangular etc.
  • the valve head 136a has a corresponding shape, and large enough to cover the aperture in a closed position.
  • the bottom end 139 may be perforated by recesses or holes similar to the recesses or holes in the envelope of the cylindrical granule basket 117a.
  • the recesses or holes may be sufficiently wide to allow the passage of the liquid flow but small enough to prevent the passage of granules.
  • the cylindrical lower flange 137a prevents granules from getting caught between the valve head 136a and the bottom end 139a when the granule valve 118a is moved to a closed position by a downward movement of the valve push rod 133.
  • FIG. 16 shows an embodiment of a ware holder or tray 150 adapted for loading articles, such as pots and pans or other articles for coarse washing when the tray is inserted into a dishwasher, such as the dishwasher 100 in FIG. 1 .
  • the tray may have a rectangular frame 151 and transverse bars 152.
  • the frame 151 may have elongated cuts 153 along the sides of the frame 151 to keep pots and pans etc in position during a washing cycle.
  • the bars may be bended in the bottom to keep pots and pans in position during washing. Few bars are provided to manage heavy pots and pans and at the same time avoid shadows from the wash spray which can influence the wash result.
  • Magnets 154 may be provided at each side or corner of the frame 151.
  • Corresponding sensors are provided in the dishwasher and operatively connected to the circuitry of the electric cabinet for detecting the magnets of the tray, i.e indicating if the basket is in or out of the dishwasher.
  • the washing program may add granules to the liquid during the dishwashing cycle.
  • FIG 17 is a flow chart illustrating a method for operating a dishwashing apparatus according to one embodiment.
  • the electric cabinet 114 may contain circuitry and/or a program-control device configured to run one or more different washing programs for operating the dishwashing apparatus to run a washing cycle in response to user input via the user interface 116.
  • the liquid pump 109 is started at a low speed in an initial step, which leads to a low liquid pressure and flow.
  • a detector or sensor arranged within the chamber as described above is activated for detecting what type of ware holder that has been placed in the chamber in step 401.
  • Liquid with granules is pumped from the washing tank through the washing liquid conduit system and the spray arms on to the articles in the ware holder.
  • the liquid in the washing tank has been pre heated in the rinse tank, maintenance heating of the liquid may be provided by the heater in the washing tank for improved washing result.
  • the granule valve 118 is controlled 404 to close the valve.
  • the dishwashing program continues for a short while, typically a few seconds to secure that all of the granules are collected.
  • washing programs may be implemented in the form of an entirely hardware embodiment, or an embodiment combining software and hardware aspects including computer program instructions to control the dishwasher.
  • These computer program instructions may be provided to a processor of the program-control device, a general purpose computer, special purpose computer, or other programmable data processing apparatus of the dishwasher to produce a machine, such that the instructions when executed create means for implementing the specified functions/acts of the washing programs to operate the dishwasher accordingly.

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  • Washing And Drying Of Tableware (AREA)

Claims (19)

  1. Granulatventilanordnung für eine Granulatgeschirrspülvorrichtung, umfassend einen entfernbaren Granulatkorb (117; 117a), der entfernbar an einem Granulatventil (118; 118a) angeordnet ist, wobei das Granulatventil (118; 118a) angeordnet ist, zwischen einer geschlossenen Position und einer geöffneten Position geändert zu werden, dadurch gekennzeichnet, dass in der geschlossenen Position ein Ventilkopf (136; 136a) eine Öffnung (138; 138a) in dem Boden (139; 139a) des Granulatkorbs (117) abdeckt, um Granulat in dem Granulatkorb (117; 117a) zu sammeln, und dadurch, dass in der geöffneten Position der Ventilkopf (136; 136a) nach oben bewegt wird, so dass Granulat aus dem Granulatkorb durch die Öffnung in dem Boden (139; 139a) des Granulatkorbs in das Granulatventil (118; 118a) passieren kann.
  2. Granulatventilanordnung nach Anspruch 1, wobei der entfernbare Granulatkorb (117; 117a) ein zylindrischer Korb ist, der am oberen Ende (119) offen ist und durch Aussparungen oder Löcher (120; 120a) um den Korb herum perforiert ist, wobei die Aussparungen oder Löcher ausreichend breit sind, um das Passieren von Flüssigkeit zu ermöglichen, aber klein genug, um das Passieren von Granulat zu verhindern.
  3. Granulatventilanordnung nach Anspruch 2, wobei der Granulatkorb (117; 117a) einen größeren zylindrischen oberen Abschnitt (121; 121a) und einen kleineren zylindrischen unteren Abschnitt (122; 122a) umfasst, die zusammengebaut sind, wobei der obere Abschnitt des größeren Zylinders sowohl höher als der untere Abschnitt des kleineren Zylinders ist als auch einen größeren Durchmesser als der untere Abschnitt des kleineren Zylinders aufweist, wobei der Korb ist mit zwei Stiften (123) oder Drahtbügeln (123a, 123b) versehen ist, die von gegenüberliegenden Seiten einer Hüllfläche des kleineren zylindrischen unteren Abschnitts (122; 122a) vorstehen, um den Granulatkorb (117; 117a) mit dem Granulatventil (118; 118a) zu verbinden.
  4. Granulatventilanordnung nach einem der Ansprüche 1-3, wobei der Granulatkorb (117; 117a) mit einem Griff (124; 124a) zum händischen Einsetzen und Entfernen des Granulatkorbs (117; 117a) von einem Geschirrspüler (100) versehen ist.
  5. Granulatventilanordnung nach einem der Ansprüche 1-4, wobei das Granulatventil (118) eine obere perforierte zylindrische Hülse (125) mit offenem Ende umfasst, die an einer Zweigleitung (126) angeordnet ist, wobei die zylindrische Hülse (125) teils um Abschnitte der zylindrischen Hülse (125) Aussparungen (130, 131) aufweist, um die Stifte (123) des Granulatkorbs (117) zur Verbindung des Granulatventils (118) mit dem Granulatkorb (117) aufzunehmen.
  6. Granulatventilanordnung nach Anspruch 5, umfassend einen Drahtständer (125a), der an einer Zweigleitung (126a) angeordnet ist, wobei der Drahtständer (125a) einen dem größeren zylindrischen oberen Abschnitt (121a) entsprechenden oberen Teil und einen dem kleineren zylindrischen unteren Abschnitt des Korbs (117a) entsprechenden unteren Teil umfasst, und zwar gegenüber von gebogenen Abschnitten (130a, 131a) mindestens eines kreisförmigen Drahtes des Drahtständers (125a) zur Aufnahme der Drahtbügel (123a, 123b) des Granulatkorbs (117a) zur Verbindung des Granulatventils (118a) mit dem Granulatkorb (117a).
  7. Granulatventilanordnung nach Anspruch 5 oder 6, wobei eine perforierte Filterplatte oder ein perforiertes Filtersieb (127) innerhalb oder auf einem oberen Einlass der Zweigleitung (126; 126a) angeordnet ist, wobei die Perforationen groß genug sind, um sowohl Flüssigkeit als auch Granulat in die Zweigleitung (126; 126a) fließen zu lassen, aber verhindern, dass Essensreste und/oder Besteck den Fluss durch die Zweigleitung begrenzen oder stoppen.
  8. Granulatventilanordnung nach einem der Ansprüche 5-7, wobei das Granulatventil (118; 118a) eine vertikale Ventilbetätigungsstange (133; 133a) umfasst, die sich von der Unterseite der Zweigleitung (126) und durch die Zweigleitung (126) erstreckt und an ihrem oberen Ende mit einem Ventilkegel (134) versehen ist, um einen Ventilkolben zu bilden.
  9. Granulatventilanordnung nach Anspruch 8, wobei der Ventilkopf (136) einen konischen Hohlraum aufweist, der oben auf dem Ventilkegel (134) angeordnet ist und auf einer abgeschrägten Kante (137) um eine Öffnung (138) in einem unteren Ende (139) des größeren zylindrischen oberen Abschnitts (121) des Granulatkorbs (117) ruht, wobei der Ventilkopf (136) eine Form aufweist, die groß genug ist, um die Öffnung (138) in einer geschlossenen Position abzudecken.
  10. Granulatventilanordnung nach Anspruch 8, wobei der Ventilkopf (136) einen konischen Hohlraum aufweist, der oben auf dem Ventilkegel (134a) angeordnet ist, und wobei ein zylindrischer unterer Flansch (137a) des Ventilkopfs (136a) um eine Öffnung (138a) auf einem unteren Ende (139a) des oberen Abschnitts (121a) des Granulatkorbs (117a) in einer geschlossenen Position ruht.
  11. Granulatventilanordnung nach Anspruch 9 oder 10, wobei das untere Ende (139; 139a) durch Aussparungen oder Löcher (140) perforiert ist, die ausreichend breit sind, um das Passieren des Flüssigkeitsstroms zu ermöglichen, aber klein genug sind, um das Passieren von Granulat zu verhindern.
  12. Granulatventilanordnung nach einem der Ansprüche 8-11, umfassend eine Ventilhebeanordnung mit einem Elektromotor (141), der wirkend mit einer angelenkten Hebelanordnung (142) verbunden ist, die ausgebildet ist, eine Aufwärts- und eine Abwärtsbewegung der Ventilbetätigungsstange (133; 133a), die mit der angelenkten Hebelanordnung (142) verbunden ist, zu erzeugen, wobei der Ventilkopf (136; 136a) zwischen der geschlossenen Position zum Sammeln von Granulat in dem Granulatkorb (117; 117a) und der offenen Position bewegbar ist, so dass Granulat durch den Boden des Granulatkorbs passierbar ist.
  13. Granulatgeschirrspülvorrichtung, umfassend eine Granulatventilanordnung nach einem der Ansprüche 1-12.
  14. Granulatgeschirrspülvorrichtung nach Anspruch 13, umfassend eine Geschirrspülkammer (102), einen Spültank (103a) und einen Spültank (103b), der unterhalb der Geschirrspülkammer angeordnet ist, ein Leitungssystem (104), das die Tanks (103a, 103b) mit der Spülkammer (102) verbindet, und ein Spülbecken (106) oberhalb des Spültanks (103a), wobei der entfernbare Granulatkorb (117; 117a) in einem Loch (119'; 119a') in dem Boden des Spülbeckens (106) entfernbar angeordnet ist, wobei das kreisförmige obere Ende (119; 119a) des Granulatkorbs auf der gleichen Höhe wie der Boden des Spülbeckens angeordnet ist und wobei das Loch (119') im Boden des Spülbeckens und das kreisförmige obere Ende (119) entsprechende Durchmesser aufweisen.
  15. Granulatgeschirrspülvorrichtung nach einem der Ansprüche 13-14, umfassend einen drehbaren Sprüharm (110, 111; 348), umfassend ein längliches Oberflächenelement (200, 300) und ein längliches Gehäuse (202, 302) auf beiden Seiten eines Mittelabschnitts (203, 303), wobei das Oberflächenelement (200, 300) und das Gehäuse (202, 302) zusammengebaut sind, um eine Innenkammer des Sprüharms (110, 111; 348) zu bilden, wobei die Innenkammer in separate längliche Spülkanäle (232-234, 235-237; 332-334, 335-337) unterteilt ist, die auf jeder Seite des Mittelabschnitts (203; 303) vorgesehen sind, wobei die Spülkanäle mit einem Geschirrspüleinlass (222; 322) verbunden sind, der angeordnet ist, Geschirrspülflüssigkeit in die Spülkanäle (232-234, 235-237; 332-334, 335-337) zu Sprühdüsen (212a-f; 312a-g) an dem Ende jedes Spülkanals zu führen.
  16. Granulatgeschirrspülvorrichtung nach einem der Ansprüche 13-15, umfassend einen Sensor (135), der in dem Spülbehälter (103a) angeordnet ist, um zu erfassen, ob der Granulatkorb (117; 117a) an dem Granulatventil (118; 118a) in der Geschirrspülvorrichtung angebracht ist.
  17. Granulatgeschirrspülvorrichtung nach Anspruch 16, wobei der Sensor (135) wirkend mit der Schaltung des elektrischen Schaltschranks (114) verbunden und ausgebildet ist, ein Sensorsignal zu erzeugen, das anzeigt, ob der Granulatkorb (117) zum Bereitstellen von Granulat an die Flüssigkeit abhängig vom betriebenen Spülprogramm angeordnet und verfügbar ist.
  18. Granulatgeschirrspülvorrichtung nach Anspruch 16 oder 17, wobei der Sensor (135) ein magnetischer oder magnetooptischer Sensor ist.
  19. Verfahren zum Betreiben einer Geschirrspülvorrichtung nach einem der Ansprüche 16-18, umfassend:
    Initiieren (400) der Flüssigkeitspumpe (109) zum Bereitstellen von Flüssigkeit mit niedrigem Flüssigkeitsdruck;
    Erfassen (401) eines zum Grobwaschen ausgebildeten Warenhalters (150) in der Kammer (102), und dass der Granulatkorb (117, 117a) an dem Granulatventil (118, 118a) angebracht ist;
    Steuern (402) des Granulatventils (118, 118a) zum Öffnen, um der Flüssigkeit Granulat hinzuzufügen;
    Geschirrspülen mit Flüssigkeit und Granulat (403);
    Steuern des Granulatventils (118, 118a) zum Schließen, um die Granulate in dem Granulatkorb (117, 117a) zu sammeln; und
    Spülen (405) des Warenhalters.
EP17716323.5A 2016-03-30 2017-03-30 Granulatventilanordnung für eine geschirrspülvorrichtung Active EP3435829B1 (de)

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SE1650414A SE540513C2 (en) 2016-03-30 2016-03-30 Granule valve arrangement for a dishwashing apparatus
PCT/SE2017/050310 WO2017171620A1 (en) 2016-03-30 2017-03-30 Granule valve arrangement for a dishwashing apparatus

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CN109480739A (zh) * 2019-01-07 2019-03-19 山东格蓝科思清洗科技有限公司 餐具清洗机颗粒清洗机构
DE102019108871A1 (de) * 2019-04-04 2020-10-08 Miele & Cie. Kg Sprüharm für eine Geschirrspülmaschine
CN113273942A (zh) * 2020-02-20 2021-08-20 佛山市云米电器科技有限公司 洗碗机控制方法、洗碗机及计算机可读存储介质
SE544887C2 (en) * 2021-06-16 2022-12-20 Granuldisk Ab Dishwasher for pots and pans

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EP0087566B1 (de) * 1979-04-02 1986-10-29 Carl Göran Christer Mosell Reinigungsmaschine
SE8301624D0 (sv) * 1983-03-24 1983-03-24 Carl Goran Christer Mosell Sett vid rengoringsmaskin
SE469923B (sv) * 1992-03-03 1993-10-11 Granuldisk Ab Granuldiskmaskin med ventil för separering av granuler ur vätskan
US6280301B1 (en) 1998-04-17 2001-08-28 National Conveyor Corp. Granule dishwashing apparatus and method of use
ITUD20060054A1 (it) * 2006-03-08 2007-09-09 Dihr S P A Macchina per il lavaggio di oggetti
SE531890C2 (sv) * 2007-01-26 2009-09-01 Gs Dev Ab Diskmaskin

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