DE60200967T2 - Dishwasher with waste crusher - Google Patents

Dishwasher with waste crusher

Info

Publication number
DE60200967T2
DE60200967T2 DE2002600967 DE60200967T DE60200967T2 DE 60200967 T2 DE60200967 T2 DE 60200967T2 DE 2002600967 DE2002600967 DE 2002600967 DE 60200967 T DE60200967 T DE 60200967T DE 60200967 T2 DE60200967 T2 DE 60200967T2
Authority
DE
Germany
Prior art keywords
characterized
rotor
dishwasher according
dishwasher
way
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.)
Expired - Fee Related
Application number
DE2002600967
Other languages
German (de)
Other versions
DE60200967D1 (en
Inventor
Piero Durazzani
Daniele Favaro
Ugo Favret
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.)
Electrolux Home Products Corp NV
HYDROMAID INTERNATIONAL Inc
HydroMaid International Inc Draper
Original Assignee
Electrolux Home Products Corp NV
HYDROMAID INTERNATIONAL Inc
HydroMaid International Inc Draper
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
Priority to ITPN20010034 priority Critical patent/ITPN20010034A1/en
Priority to ITPN20010034 priority
Application filed by Electrolux Home Products Corp NV, HYDROMAID INTERNATIONAL Inc, HydroMaid International Inc Draper filed Critical Electrolux Home Products Corp NV
Publication of DE60200967D1 publication Critical patent/DE60200967D1/en
Application granted granted Critical
Publication of DE60200967T2 publication Critical patent/DE60200967T2/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4202Water filter means or strainers
    • A47L15/4208Arrangements to prevent clogging of the filters, e.g. self-cleaning
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4202Water filter means or strainers
    • A47L15/4206Tubular filters

Description

  • The The present invention relates to a dishwasher of the type with therein built-in shredder for Leftovers, which are designed so that is made possible by the dishes and other objects the rinse filling removed dirt generally into tiny particles to crush at a corresponding Improvement in efficiency and the effectiveness of the filter system and thus ultimately the entire dishwasher.
  • It is well known that devices for food waste shredding usually contain an array of knives, designed in such a way they are one with respect to an array of fixed blades Perform rotary motion. As is well known, they are subject to jamming as such, indicating the presence of hard dirt materials such as poultry bones or the like, which practically prevents them from working properly.
  • This Problem is of particular importance for dishwashers, where mainly because of the problems arising from the need for reduction of the space required, the available energy for the drive the device for shredding food waste is relatively small, although especially the very solid dirt materials, which one Cause jamming of the food waste shredder can, on the other hand very often are present in the interior of such machines.
  • in the With regard to minimizing the likelihood of jamming The rotating parts is a hydraulically operated device for the Food debris has been proposed, such as Such a construction as described in US Pat. No. 6,012,662. In this solution will in an annular Chamber a reciprocating piston of pressurized water powered and is with the rotating knives of the device connected to the food waste shredding. A valve is one equipped with reciprocating control piston such that this is capable of pressurizing the said annular chamber Water alternatively on the opposite sides of the moving To distribute the piston. The result is that the rotating knives be operated in such a way that they are able to work in opposite directions Directions to rotate, especially if it is due to the particular solid dirt should come to jamming. Finally, can Therefore, it should be noted that the device for food waste shredding is able to effectively under any operating conditions work.
  • On the other hand, however, a food waste shredder of the type described above is relatively bulky, ie, it takes up a lot of space and requires connection to a water supply pipe capable of supplying water at a particularly high pressure (as is known) Example in the US). It is practically ineffective if it is connected to a water supply line with a low supply pressure, as z. In European countries or as in US 3 401 892 the case is.
  • On every case would a dishwasher with built-in shredder of this type inevitably a veritable have an inappropriately high water consumption.
  • Out For this reason, an object of the present invention is a dishwasher with built-in device for shredding which is particularly effective and compact and designed in such a way is that it shows a significant energy saving effect.
  • One Another object of the present invention is to provide a dishwasher the one mentioned above To provide a type equipped with a filter system, which is particularly simple, rational and effective and at the same time a substantial improvement of the dishwasher inherent Spülleistungsvermögens serves.
  • One Another object of the present invention is still a dishwasher the one mentioned above To provide species equipped with a water cycle which is particularly designed to improve the performance of the built-in device to reduce food waste shredding.
  • According to the present Invention these objects in a dishwasher achieved with built-in device for shredding which embodies the characteristic properties as recited in the appended claims and are fixed.
  • The In any case, features and advantages of the present invention will become apparent easier to clear from the description below a non-limiting the general inventive idea For example, with reference to the attached drawings which is a partial and schematic view of a preferred embodiment the dishwasher according to the present Invention represents.
  • With reference to the said figure, the dishwasher contains mainly a (only partially shown) washing container 1 , which at its lower part with a water collecting tank 2 is equipped, to which the suction side 3 a circulation pump 4 is connected, whose discharge side 5 with at least one rotating spray arm 6 is connected in such a way that it injects the wash liquor onto the objects of the Spülfüllung, which are arranged in a suitable (not shown for reasons of greater simplicity) receiving frame.
  • The wash tank 1 houses below the rotating spray arm 6 Also, a filter system which is arranged in the flow path of the wash liquor, which, after being sprayed in this manner on the objects of the Spülfüllung, in the collecting container 2 collects, so they again from the circulation pump 4 can be included.
  • In the example described here, the said filter system comprises a planar or frusto-conical, preferably a wide-meshed filter area 7 , which with an entrance opening 8th is provided between the edge and the bottom of the container 2 extends the main area of the filter, which in the figure generally with 9 referred to as.
  • The filter 9 preferably has a very fine mesh structure, and it forms that part of the filter system which contributes most of all to the retention of the debris from the water flow passing through the pump 4 is circulated. The filter 9 has a substantially frustoconical (as shown in the figure actually), cylindrical or similar shape, and it is designed so that it is rotated substantially about its own major axis, by the rotor 11 the device for food waste shredding, which is installed in the dishwasher and in the figure in general with 10 referred to as.
  • In a preferred manner, the device for reducing food particles contains 10 Knives which are rotatable with respect to an array of fixed blades of the type described in US Pat. No. 6,109,551.
  • The filter 9 is rotatably an integral part of a drive shaft 12 of the rotor 11 with which he has a frusto-conical flange 13 connected, so he for the shredder of food waste 10 forms a kind of inlet funnel, which upstream of the filter system in the flow direction 7 . 9 with the wash tank 1 communicates.
  • The shredder of food waste 10 also contains an outlet opening 14 , which preferably at the bottom of the water collection tank 2 located. From this outlet opening branches one with a drain pump 16 provided drain line 15 from. In other words, the drainage line 15 the dishwasher branches off from the sump 2 in cooperation with the shredder of food residues 10 from.
  • Preferably, the shredder extends from food debris 10 from the bottom of the collection container 2 up to the inlet funnel 13 with a sidewall which is essentially a wide-meshed auxiliary filter 17 which is essentially determined by the main filter 9 is surrounded and advantageously reduces the possibility that this main filter 9 added.
  • About the wave 12 is the rotor 11 the crusher of food waste 10 with a bidirectionally running electric motor 18 connected, which by a sensor means 19 is controlled, which is designed such that it either directly or indirectly from the rotor 11 determines torque to be overcome and causes the same rotor to reverse its direction of rotation, when it is determined that the torque to be overcome exceeds a predetermined threshold.
  • Said sensor means 19 may include a threshold comparator which is incorporated in the program sequence control unit of the machine (not shown in the figure for greater simplicity and includes, for example, a Motorola 68HC705 microprocessor) and by means of an input 20 is driven with a signal containing information about the above-mentioned torque to be overcome. Such a signal may be, for example, the current absorbed by the motor or the phase difference between the voltage and the current of the motor 18 or the like.
  • Should the case occur, the rotor 11 The sensor causes the grinder of food debris to be stuck due to the presence of foreign matter which is particularly strong and thus gives rise to an increase in the torque to be overcome beyond a predetermined value 19 (about the program sequence of the control unit of the machine) that the rotor 11 reverses its direction of rotation, thereby maximizing efficiency in the operation of the food waste shredder 10 is guaranteed.
  • Regardless of this its feature becomes the rotor 11 preferably by the engine 18 driven in such a way that it regularly rotates in a cyclical manner can reverse, for. B. after every complete revolution.
  • As mentioned earlier in this specification, the rotor is in all cases 11 arranged so that he also the filter 9 rotated, and the latter is with at least one adjacent fixed nozzle 21 connected, which to the discharge side 5 the circulation pump 4 over a branch line 22 connected with orifice plate. That leads to the result that when the pump 4 is in operation and the filter 9 is rotated in this way, in essence, the entire surface of said filter 9 by a countercurrent jet of water from said nozzle 21 comes, is rinsed, which advantageously removed from the same filter, the dirt particles, ie washed away, which have been gradually retained by the same filter. It can easily be seen that such a rotation of the filter 9 allows to achieve an optimum of self-cleaning effect of the same filter, although of only a single nozzle 21 Use is made and therefore no significant additional water consumption.
  • Preferably, the drainpipe contains 15 in the flow direction behind the drain pump 16 a device for distributing the flow 24 from which a return line 23 which is connected to the interior of the washing container 1 communicates, branches off. In a preferred manner, such a distribution device is still located 24 normally in the state in which the drain pump 16 with the only drainage pipe 15 communicates.
  • At the beginning of a cycle of the dishwasher, z. B. during a pre-rinse phase (or even if coarse dirt particles are still deposited on the objects of Spülfüllung), determines the program sequence of the control unit of the machine, the operation of the circulation pump 4 and the drive of the engine 18 ; it also controls the distributor 24 that this temporarily switches to an operating position in which the discharge side of the drain pump 16 , which is also operated temporarily, in conjunction with the return line 23 stands. The result is that the dirt particles, due to the action of the rotating spray arm 6 be rinsed from the items of Spülfüllung, through the shredder of food debris 10 crushed and from the pump 16 through the pipe 23 they are returned to the wash tank 1 and then again through the crusher of leftovers 10 promoted.
  • In other words, in this temporary phase allows the return line 23 that an actually closed loop of the circuit through the shredder of food particles 10 passing through water flow for the dirt particles, which are conveyed by a water flow coming from the drain pump 16 is generated, thus fulfilling a dual task.
  • This allows in the most advantageous way that the dirt particles extremely fine be crushed, and this in turn moves the dishwasher in the situation, subsequently a rinsing phase (Which may also be a conventional one in nature) among the best conditions for achieving an ideal rinsing effect perform.
  • Of course, in a suitable subsequent phase of the rinse cycle performed by the machine, the program sequence controller of the machine may be the flow distributor 24 make it possible to switch back to its normal rest position so that it becomes possible in the wash tank 1 Contaminated polluted water through the drainage pipe 15 derive. The resulting absence of dirt on the bottom of the wash tank 1 has the very important advantage that the subsequent washing, rinsing and / or drying phases of the cycle can be carried out with completely clear water and that there are essentially no unpleasant odors.
  • Finally, can be said that the general operation of the dishwasher to a substantially conventional one Way can be done, so for the sake of simplicity not here needs to be addressed.
  • It is estimated that the dishwasher, which have been described here merely by way of example which can be the subject of a number of modifications without that deviates from the scope of the present invention.

Claims (9)

  1. Dishwasher, which incorporates a built-in appliance for shredding it ( 10 ) containing an inlet in communication with the wash tank ( 1 ) of the machine and one with a drain line ( 15 ) connected outlet ( 14 ), said device for reducing leftovers ( 10 ) in turn a rotor ( 11 ) which is designed such that it rotates selectively in two opposite directions, characterized in that said rotor (8) 11 ) of a bidirectionally running electric motor ( 18 ) driven by sensor means ( 19 ), which are designed so that they can be overcome the torque to be overcome, which on the rotor ( 11 ) of the food waste shredder ( 10 ), determine and selbigen rotor ( 11 ) to reverse its direction of rotation if it is determined that the torque to be overcome exceeds a predetermined threshold.
  2. Dishwasher according to claim 1, characterized in that said sensor means ( 19 ) comprise a threshold comparator driven by a signal containing information about said torque to be overcome, such as that of said electric motor ( 18 ), the phase difference between the voltage and the current of this motor ( 18 ) or similar.
  3. Dishwasher according to claim 1, characterized in that the rotor ( 11 ) of said device for shredding food waste ( 10 ) normally by said motor ( 18 ) is driven in such a way that it cyclically reverses its direction of rotation.
  4. Dishwasher according to claim 1, which comprises a filter system ( 7 . 9 . 17 ), which in the flow path of the by a circulating pump ( 4 ) is arranged in circulation rinsing water, characterized in that at least one main area ( 9 ) of the said filter system ( 7 . 9 . 17 ) is designed in such a way that together with the rotor ( 11 ) of the food waste shredder ( 10 ) is rotated and at least one nozzle ( 21 ) or the like, which is designed to be separated from said circulating pump (10). 4 ) is supplied in such a way that it delivers a countercurrent of water which is capable of 9 ) of said filter system to rinse and clean.
  5. Dishwasher according to claim 4, characterized in that said nozzle ( 21 ) with the delivery side ( 5 ) of the circulation pump ( 4 ) via a branch line ( 22 ) is connected with orifice plate.
  6. Dishwasher according to claim 4, characterized in that said main area ( 9 ) of the filter system is substantially frustoconical or cylindrical in shape and rotatable with said rotor (5). 11 ) of said device for shredding food waste ( 10 ) is connected in such a way that it is capable of turning around its own main axis fixedly connected thereto.
  7. Dishwashing machine according to claim 4, characterized in that said device for shredding food ( 10 ) has at least one wall, which essentially by an auxiliary filter ( 17 ), which essentially depends on the said main filter ( 9 ) is surrounded.
  8. Dishwasher according to claim 1, characterized in that said drainage pipe ( 15 ) in the flow direction behind a drain pump ( 16 ) normally not in operation flow distribution means ( 24 ), which are designed such that, during a temporary phase, they can optionally control the discharge side of said discharge pump ( 16 ) with a reflux line ( 23 ), which with the interior of the washing container ( 1 ) in such a way that a closed loop of the grinder (15 10 ) passing water circulation for the dirt particles, which are transported by a water flow, by the said drain pump ( 16 ) is produced.
  9. Dishwasher according to claim 8, characterized in that after completion of said temporary phase, the drain pump ( 16 ) is temporarily operated to pass through said distribution means ( 24 ) To drain off water containing the debris previously passed through said debris disintegrating device ( 10 ) have been crushed to the finest detail.
DE2002600967 2001-05-08 2002-04-30 Dishwasher with waste crusher Expired - Fee Related DE60200967T2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITPN20010034 ITPN20010034A1 (en) 2001-05-08 2001-05-08 Dishwasher disposal unit
ITPN20010034 2001-05-08

Publications (2)

Publication Number Publication Date
DE60200967D1 DE60200967D1 (en) 2004-09-23
DE60200967T2 true DE60200967T2 (en) 2005-08-11

Family

ID=11453267

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2002600967 Expired - Fee Related DE60200967T2 (en) 2001-05-08 2002-04-30 Dishwasher with waste crusher

Country Status (4)

Country Link
EP (1) EP1256308B1 (en)
AT (1) AT273657T (en)
DE (1) DE60200967T2 (en)
IT (1) ITPN20010034A1 (en)

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DE102005022634A1 (en) * 2005-05-11 2006-11-16 Meiko Maschinenbau Gmbh & Co. Kg Method and system for the treatment of excretory vessels

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DE10346675A1 (en) * 2003-10-08 2005-05-04 Bsh Bosch Siemens Hausgeraete Dishwasher with comminution device
KR101119090B1 (en) * 2004-06-24 2012-03-16 엘지전자 주식회사 Apparatus and Method for Preventing Remnant Adhesion of The Dish Washer
DE102004060950A1 (en) 2004-12-17 2006-06-29 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with low-maintenance sieve system
DE102004062242A1 (en) 2004-12-23 2006-07-13 BSH Bosch und Siemens Hausgeräte GmbH Water-conducting household appliance and method for operating the same
DE102005008987B3 (en) * 2005-02-28 2006-06-01 Meiko Maschinenbau Gmbh & Co.Kg Multiple tank dishwasher with water return device which returns water from the dirty water chamber to the clean water chamber via a filter wall
DE102007007134A1 (en) 2007-02-13 2008-08-14 Meiko Maschinenbau Gmbh & Co.Kg Filter for cleaning machines
DE102007061038B4 (en) * 2007-12-18 2016-10-27 BSH Hausgeräte GmbH Water-conducting household appliance
US8177915B2 (en) 2009-05-13 2012-05-15 Electrolux Home Products, Inc. Filtration system for a dishwasher, and associated apparatus and method
US8667974B2 (en) * 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9918609B2 (en) * 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
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US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
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US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9451867B2 (en) 2012-01-26 2016-09-27 Whirlpool Corporation Dishwasher and ozone generator
DE102013200164A1 (en) 2012-02-03 2013-08-08 Avermann Laser- und Kant-Zentrum GmbH Apparatus for treating organic material e.g. pet food, for recovering e.g. liquid fuel, has engagement disc that is attached in parallel to active plane of disc extending primary blade and at an angle to slice plane of crushing blade
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
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DE102005022634B4 (en) * 2005-05-11 2010-03-04 Meiko Maschinenbau Gmbh & Co. Kg Method and device for the treatment of excretory vessels

Also Published As

Publication number Publication date
EP1256308A2 (en) 2002-11-13
EP1256308A3 (en) 2003-05-28
DE60200967D1 (en) 2004-09-23
AT273657T (en) 2004-09-15
ITPN20010034A1 (en) 2002-11-08
EP1256308B1 (en) 2004-08-18

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