EP2687141B1 - A dishwasher - Google Patents

A dishwasher Download PDF

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Publication number
EP2687141B1
EP2687141B1 EP12425122.4A EP12425122A EP2687141B1 EP 2687141 B1 EP2687141 B1 EP 2687141B1 EP 12425122 A EP12425122 A EP 12425122A EP 2687141 B1 EP2687141 B1 EP 2687141B1
Authority
EP
European Patent Office
Prior art keywords
sprayer device
washing chamber
auxiliary
auxiliary sprayer
pipe
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
EP12425122.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2687141A1 (en
Inventor
Aldo Fumagalli
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.)
Candy SpA
Original Assignee
Candy SpA
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 Candy SpA filed Critical Candy SpA
Priority to EP12425122.4A priority Critical patent/EP2687141B1/en
Priority to ES12425122T priority patent/ES2963076T3/es
Priority to PL12425122.4T priority patent/PL2687141T3/pl
Priority to RU2013131186A priority patent/RU2636365C2/ru
Priority to CN201310301205.9A priority patent/CN103536266A/zh
Publication of EP2687141A1 publication Critical patent/EP2687141A1/en
Application granted granted Critical
Publication of EP2687141B1 publication Critical patent/EP2687141B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/14—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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms

Definitions

  • the present invention relates to a dishwasher, i.e. a domestic electrical appliance used to automatically wash crockery.
  • a typical present-day dishwasher comprises a washing chamber inside of which are usually provided two crockery baskets placed one above the other.
  • One or a pair of sprayer devices usually provided with two arms that can be rotated about a single rotation axis, on which arms are arranged a plurality of distributing nozzles, provide for spraying the crockery baskets, and therefore the crockery, with washing liquid.
  • the sprayer devices are hydraulically connected to a delivery pipe of a pump which provides for supplying washing liquid, in particular water, to the sprayer devices.
  • the sprayer devices are placed in rotation by the same washing liquid which, by coming out of the nozzles, transmits angular moments to the two arms causing their rotation about the rotation axis.
  • Heating components are also provided, usually electrical resistances, active on the delivery pipe in order to heat the washing liquid during one or more stages of the wash cycle
  • a dishwasher comprising means forming a generally rectangular washing compartment having rear, side, top and bottom walls and a front opening, a hinged door for closing said front opening-movable from a closed position into a generally horizontally disposed open position.
  • Reaction spray arm means in the bottom of the compartment directs jets of fluid in a path extending upwardly throughout the compartment.
  • support means carrying the spray arm means for rotation which includes pivot means between the support means and the spray arm means; a pair of spray manifolds extending between the end walls at the front and rear edges of the top wall for directing jets of fluid in a path extending downwardly through the compartment.
  • a basket is movable into and out of the path of the liquid jets in the compartment and a delivery pump has conduit means connected to the spray arm means and to the spray manifold to form a source of liquid.
  • Motor means has a driving connection with the spray arm means to pivotally oscillate the spray arm means for moving the upwardly directed liquid jets in a changing pattern throughout the basket positioned in the path of the liquid jets in said compartment, the conduit means including valves to selectively project jets of liquid from the spray arm means and the manifolds in predetermined spray patterns.
  • dishwashers have been notably improved both in terms of functionality and in terms of energy consumption.
  • the Applicant has perceived a need for users to have at their disposal dishwashers that are particularly effective in terms of the degree of cleaning of crockery, in particular capable of cleaning their own type of crockery effectively.
  • the Applicant has observed that users prefer acquiring dishwashers capable of cleaning effectively the crockery that they are generally accustomed to using.
  • crockery used depends on the number of members in the family unit, on the type of food cooked, and on many other factors; nevertheless, for every combination of crockery and degree of encrustation thereon, there is a specific dishwasher layout capable optimising performance. It is nevertheless inconceivable for a manufacturer to make available an almost unlimited number of possible dishwasher layouts, clearly for reasons of costs of design, production and logistics.
  • the problem underlying the present invention is that of proposing a dishwasher capable of satisfying the greatest number of users, i.e. capable of washing with effectiveness the greatest number of possible combinations of crockery.
  • the label 1 indicates in an overall sense a dishwasher in accordance with the present invention.
  • the dishwasher 1 comprises a substantially box-shaped washing chamber 2, comprising a bottom wall 2a, three side walls 2b and a top wall 2c.
  • the dishwasher 1 also comprises two crockery baskets 3 placed one above the other, slidably bound in the washing chamber 2 and arranged to come out, at least partly, from the opening of the washing chamber in order to allow crockery to be easily loaded into and unloaded from the basket 3.
  • a hydraulic pump 4 which can be connected to a source of washing liquid, such as for example the water supply system, is connected to a delivery pipe 5 placed beneath the bottom wall 2a of the washing chamber 2.
  • the delivery pipe 5 is connected with a feed pipe 6 which is extended into the washing chamber 2.
  • the feed pipe 6 is placed close to or behind a side wall 2b of the washing chamber, in particular the side wall opposite the opening of the washing chamber 2.
  • the feed pipe 6 supplies one or more main sprayer devices 7 with washing liquid. These latter devices can rotate inside the washing chamber 2 about a first rotation axis X1, preferably vertical, in order to spray washing liquid towards the crockery baskets 3.
  • Each main sprayer device 7 is placed underneath the respective basket 3 and is arranged to spray water upwards, i.e. towards the respective basket 3.
  • the rotating coupling between the main sprayer device 7 and the feed pipe 6 is implemented in a manner known per se.
  • the main sprayer devices 7 are in direct communication with the pump 4, i.e. there are no shutoff valves placed along the hydraulic route which connects the pump 4 to the main sprayer devices 7.
  • the dishwasher 1 also comprises at least one auxiliary sprayer device 8 which can rotate about a second rotation axis X2 that is different from the first rotation axis X1.
  • auxiliary sprayer device is understood to mean, in the context of the present invention, a sprayer device having smaller dimensions and capacity relative to the main sprayer device.
  • the auxiliary sprayer device performs its effect locally, i.e. in localised and restricted regions or portions within the washing chamber.
  • the auxiliary sprayer device is particularly effective for removing dirt and/or encrustations present on some of the crockery placed in the washing chamber.
  • the auxiliary sprayer device is in fluid communication with the pump 4.
  • the dishwasher comprises a supply pipe 9 placed in fluid communication with the delivery pipe 5 and the auxiliary sprayer device 8 in order to supply the auxiliary sprayer device 8 with washing liquid.
  • the supply pipe 9 is developed beneath the bottom wall 2a of the washing chamber 2 and not extended into the washing chamber itself.
  • auxiliary sprayer devices 8 which are active in any area of the washing chamber 2 without necessarily having to make provision for different washing chambers and feed pipes.
  • the connection between the pump 4 and the auxiliary sprayer device 8 does not require connections with the feed pipe 6 which serves the main sprayer devices 7 and does not require different feed pipes 6 according to the position which the auxiliary sprayer device 8 shall occupy.
  • the bottom wall 2a of the washing chamber 2 comprises a hole 10 taken up by a terminal portion 9a of the supply pipe 9.
  • the auxiliary sprayer device 8 is fitted directly or indirectly on the hole 10, in a fluid-tight manner with the terminal portion 9a of the supply pipe 9.
  • the auxiliary sprayer device 8 is fitted directly on the hole 10.
  • the auxiliary sprayer device 8 is revolvably coupled to the bottom wall 2a of the washing chamber 2 at the hole 10.
  • the terminal portion 9a of the supply pipe 9 and the auxiliary sprayer device 8 are mechanically bound together in such a way that the auxiliary sprayer device 8 revolves with respect to the supply pipe 9.
  • Such a coupling is preferably implemented by retaining teeth (not illustrated) on the sprayer device 8 which surround an annular shoulder of the terminal portion 9a of the supply pipe 9.
  • the rotation of the auxiliary sprayer device 8 takes place through the effect of the flow of washing liquid supplied by it, giving rise to a torque about the rotation axis X2 of the sprayer device 8.
  • a shutoff valve 11 is provided, which is active on the supply pipe 9 upstream of the auxiliary sprayer device 8, i.e. in a position between the delivery pipe and the hole 10 on the bottom wall 2a of the washing chamber 2.
  • the function of the shutoff valve 11 is to stop or allow the supply of washing liquid to the auxiliary sprayer device 8, such that the latter can be selectively activated during the crockery washing stages.
  • the auxiliary sprayer device 8 can be deactivated even when washing liquid is supplied to the main sprayer devices 7.
  • the shutoff valve 11 is an electromechanical valve equipped with one inlet and one outlet. The opening and closing of the shutoff valve 11 is controlled by a control and monitoring unit (not illustrated) of the dishwasher. It is to be noted that the shutoff valve 11 also lies beneath the bottom wall 2a of the washing chamber 2.
  • the auxiliary sprayer device 8 is not fitted directly on the hole 10.
  • an extension pipe 12 is arranged inside the washing chamber 2 and is fitted on the hole 10 at a first end 12a.
  • a second end 12b of the extension pipe 12 is mechanically and hydraulically coupled to the auxiliary sprayer device 8.
  • the extension pipe 12 is revolvably coupled to the bottom wall 2a of the washing chamber 2 at the hole 10.
  • the terminal portion 9a of the supply pipe 9 and the first end 12a of the extension pipe 12 are mechanically bound together in such a way that the extension pipe revolves with respect to the supply pipe 9.
  • Such a coupling is preferably implemented by retaining teeth (not illustrated) on the first end 12a of the extension pipe 12 which surround an annular shoulder of the terminal portion 9a of the supply pipe 9.
  • the auxiliary sprayer device 8 is coupled to the second end 12b of the extension pipe 12 in such a way that the auxiliary sprayer device 8 revolves with respect to the extension pipe 12.
  • such a coupling is implemented by retaining teeth (not illustrated) on the sprayer device 8 which surround an annular shoulder of the second end 12b of the extension pipe 12.
  • a shutoff valve 11 is provided, which is active on the supply pipe 9 upstream of the auxiliary sprayer device 8, in particular upstream of the extension pipe 12.
  • the function of the shutoff valve 11 is to stop or allow the supply of washing liquid to the auxiliary sprayer device 8, such that the latter can be selectively activated during the crockery washing stages.
  • the auxiliary sprayer device 8 can be deactivated even when washing liquid is supplied to the main sprayer devices 7.
  • the shutoff valve 11 is an electromechanical valve equipped with one inlet and one outlet. The opening and closing of the shutoff valve 11 is controlled by a control and monitoring unit (not illustrated) of the dishwasher. It is to be noted that the shutoff valve 11 also lies beneath the bottom wall 2a of the washing chamber 2.
  • the bottom wall 2a of the washing chamber 2 comprises a second hole 10 taken up by a further terminal portion 9b of the supply pipe 9.
  • a second auxiliary sprayer device 8 is fitted on the aforementioned second hole 10.
  • the supply pipe 9 has, as mentioned, two terminal portions 9a, 9b, each of which is taken up by a respective auxiliary sprayer device 8.
  • the supply pipe has only one fluid connection with the delivery pipe 5, as illustrated in Figure 3 .
  • Each terminal portion 9a, 9b of the supply pipe 9 and the respective auxiliary sprayer device 8 are mechanically bound together in such a way that the auxiliary sprayer device 8 revolves with respect to the supply pipe 9.
  • Such a coupling is preferably implemented by retaining teeth (not illustrated) on the sprayer device 8 which surround an annular shoulder of the terminal portion 9a, 9b of the supply pipe 9.
  • the rotation of each auxiliary sprayer device 8 takes place through the effect of the flow of washing liquid supplied by it, giving rise to a torque about the rotation axis X2 of the sprayer device 8.
  • a shutoff valve 11 is provided for each auxiliary sprayer device 8 and is active on the supply pipe 9 upstream of the auxiliary sprayer device 8, i.e. in a position between the delivery pipe 5 and the hole 10 on the bottom wall 2a of the washing chamber 2.
  • each shutoff valve 11 is to stop or allow the supply of washing liquid to the corresponding auxiliary sprayer device 8, such that the latter can be selectively activated during the crockery washing stages.
  • each auxiliary sprayer device 8 can be deactivated even when washing liquid is supplied to the main sprayer devices 7.
  • each shutoff valve 11 is an electromechanical valve equipped with one inlet and one outlet. The opening and closing of the shutoff valve 11 is controlled by a control and monitoring unit (not illustrated) of the dishwasher. It is to be noted that the shutoff valves 11 also lie beneath the bottom wall 2a of the washing chamber 2.
  • the bottom wall 2a of the washing chamber 2 comprises a second hole 10 taken up by a further terminal portion 9b of the supply pipe 9.
  • a second auxiliary sprayer device 8 is fitted on the aforementioned second hole 10.
  • the supply pipe 9 has, as mentioned, two terminal portions 9a, 9b, each of which is taken up by a respective auxiliary sprayer device 8.
  • the supply pipe has only one fluid connection with the delivery pipe 5, as illustrated in Figure 4 .
  • Each terminal portion 9a, 9b of the supply pipe 9 and the respective auxiliary sprayer device 8 are mechanically bound together in such a way that the auxiliary sprayer device 8 revolves with respect to the supply pipe 9.
  • Such a coupling is preferably implemented by retaining teeth (not illustrated) on the sprayer device 8 which surround an annular shoulder of the terminal portion 9a, 9b of the supply pipe 9.
  • the rotation of each auxiliary sprayer device 8 takes place through the effect of the flow of washing liquid supplied by it, giving rise to a torque about the rotation axis X2 of the sprayer device 8.
  • the two auxiliary sprayer devices 8 are activated when the pump 4 is activated, i.e. together with the main sprayer devices 7.
  • the bottom wall 2a of the washing chamber 2 comprises a second hole 10 taken up by a further terminal portion 9b of the supply pipe 9.
  • a second auxiliary sprayer device 8 is fitted on the aforementioned second hole 10.
  • the supply pipe 9 has, as mentioned, two terminal portions 9a, 9b, each of which is taken up by a respective auxiliary sprayer device 8.
  • the supply pipe has only one fluid connection with the delivery pipe 5, as illustrated in Figure 5 .
  • Each terminal portion 9a, 9b of the supply pipe 9 and the respective auxiliary sprayer device 8 are mechanically bound together in such a way that the auxiliary sprayer device 8 revolves with respect to the supply pipe 9.
  • Such a coupling is preferably implemented by retaining teeth (not illustrated) on the sprayer device 8 which surround an annular shoulder of the terminal portion 9a, 9b of the supply pipe 9.
  • the rotation of each auxiliary sprayer device 8 takes place through the effect of the flow of washing liquid supplied by it, giving rise to a torque about the rotation axis X2 of the sprayer device 8.
  • a shutoff valve 11 is provided and is active on the supply pipe 9 upstream of both auxiliary sprayer devices 8, i.e. in a position between the delivery pipe and the two holes 10 on the bottom wall 2a of the washing chamber 2.
  • the function of the shutoff valve 11 is to stop or allow the supply of washing liquid to both auxiliary sprayer devices 8, such that the latter devices can be selectively activated during the crockery washing stages.
  • the auxiliary sprayer devices 8 can be deactivated even when washing liquid is supplied to the main sprayer devices 7.
  • the shutoff valve 11 is an electromechanical valve equipped with one inlet and one outlet. The opening and closing of the shutoff valve 11 is controlled by a control and monitoring unit (not illustrated) of the dishwasher. It is to be noted that the shutoff valve 11 also lies beneath the bottom wall 2a of the washing chamber 2.
  • an extension pipe 12 can be provided, such as that described in relation to the second embodiment, which extension pipe 12 is active on only one or on both auxiliary sprayer devices 8.
  • a second auxiliary sprayer device 8 can be provided mounted on an extension pipe 12 connected to the single hole 10 made in the bottom wall 2a of the washing chamber 2.
  • the shutoff valve 11 is a two-way valve, i.e. equipped with one inlet and two outlets.
  • the first auxiliary sprayer device 8 is connected to a first outlet, and the extension pipe 12, to which the second auxiliary sprayer device 8 is connected, is connected to the second outlet.
EP12425122.4A 2012-07-16 2012-07-16 A dishwasher Active EP2687141B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12425122.4A EP2687141B1 (en) 2012-07-16 2012-07-16 A dishwasher
ES12425122T ES2963076T3 (es) 2012-07-16 2012-07-16 Un lavavajillas
PL12425122.4T PL2687141T3 (pl) 2012-07-16 2012-07-16 Zmywarka do naczyń
RU2013131186A RU2636365C2 (ru) 2012-07-16 2013-07-08 Посудомоечная машина
CN201310301205.9A CN103536266A (zh) 2012-07-16 2013-07-15 洗碗机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12425122.4A EP2687141B1 (en) 2012-07-16 2012-07-16 A dishwasher

Publications (2)

Publication Number Publication Date
EP2687141A1 EP2687141A1 (en) 2014-01-22
EP2687141B1 true EP2687141B1 (en) 2023-08-30

Family

ID=46970191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12425122.4A Active EP2687141B1 (en) 2012-07-16 2012-07-16 A dishwasher

Country Status (5)

Country Link
EP (1) EP2687141B1 (zh)
CN (1) CN103536266A (zh)
ES (1) ES2963076T3 (zh)
PL (1) PL2687141T3 (zh)
RU (1) RU2636365C2 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015018671A1 (en) 2013-08-06 2015-02-12 Arcelik Anonim Sirketi A dishwasher with improved washing effectiveness
AU2016218544B2 (en) * 2015-02-13 2020-07-02 Fisher & Paykel Appliances Limited Wash system for washing appliance
WO2023247029A1 (en) * 2022-06-22 2023-12-28 Gorenje D.O.O. A dishwasher with improved spraying means

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120018996A1 (en) * 2010-07-20 2012-01-26 Bsh Bosch Und Siemens Hausgerate Gmbh Seal arrangement, method for manufacturing such a seal arrangement and dishwasher

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960990A (en) * 1956-01-26 1960-11-22 Whirlpool Co One level dishwasher
SE524021C2 (sv) * 2002-08-30 2004-06-15 Asko Cylinda Ab Diskmaskin med intensivzon
ITPN20020064A1 (it) * 2002-08-30 2004-02-29 Electrolux Home Products Corporatio N N V Lavastoviglie, in particolare per cucine componibili.
US7523758B2 (en) * 2003-06-17 2009-04-28 Whirlpool Corporation Dishwasher having rotating zone wash sprayer
KR20100048467A (ko) * 2008-10-31 2010-05-11 삼성전자주식회사 식기세척기
US8834648B2 (en) * 2010-10-21 2014-09-16 Whirlpool Corporation Dishwasher with controlled rotation of lower spray arm

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120018996A1 (en) * 2010-07-20 2012-01-26 Bsh Bosch Und Siemens Hausgerate Gmbh Seal arrangement, method for manufacturing such a seal arrangement and dishwasher

Also Published As

Publication number Publication date
RU2636365C2 (ru) 2017-11-22
ES2963076T3 (es) 2024-03-25
CN103536266A (zh) 2014-01-29
RU2013131186A (ru) 2015-01-20
EP2687141A1 (en) 2014-01-22
PL2687141T3 (pl) 2024-03-18

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