US20150265131A1 - Sump, in particular for a dish washing machine, and methdo for manufacturing the same - Google Patents

Sump, in particular for a dish washing machine, and methdo for manufacturing the same Download PDF

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Publication number
US20150265131A1
US20150265131A1 US14/435,071 US201314435071A US2015265131A1 US 20150265131 A1 US20150265131 A1 US 20150265131A1 US 201314435071 A US201314435071 A US 201314435071A US 2015265131 A1 US2015265131 A1 US 2015265131A1
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US
United States
Prior art keywords
supply portion
sump
sump according
hollow
flow
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.)
Abandoned
Application number
US14/435,071
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English (en)
Inventor
Enzo BRIGNONE
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.)
Bitron SpA
Original Assignee
Bitron 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 Bitron SpA filed Critical Bitron SpA
Assigned to BITRON S.P.A. reassignment BITRON S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRIGNONE, ENZO
Publication of US20150265131A1 publication Critical patent/US20150265131A1/en
Abandoned legal-status Critical Current

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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
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • 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
    • 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
    • A47L15/4246—Details of the tub
    • 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
    • A47L15/4285—Water-heater arrangements
    • 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
    • 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
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • 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
    • A47L2401/11—Water hardness, acidity or basicity
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/06—Water heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system

Definitions

  • the present invention is relative to a sump, in particular for a dishwasher, and to a method for the manufacturing of the same.
  • dishwashers comprising a casing that delimits, on the inside, a washing tank, which houses dishes in suitable housings obtained in one or more racks, so as to allow them to be washed by means of spraying water under pressure that is delivered by one or more impellers.
  • a sump adapted to store water and deliver it to the washing tank by means of the impellers.
  • An object of the present invention is to provide a sump and a method for the manufacturing of the same, which are able to solve the drawbacks of the prior art and, at the same time, can be manufactured in a simple and economic fashion.
  • FIGS. 1 and 2 are prospective views from the top and, respectively, from the bottom of a sump manufactured according to an explanatory embodiment of the present invention
  • FIG. 3 is an exploded view of the sump shown in the previous figures
  • FIG. 4 is a bottom prospective view similar to the one of FIG. 2 , wherein, though, the sump is shown without some components;
  • FIGS. 5 and 6 are section views of the sump shown in the previous figures, which are respectively obtained through vertical secant planes.
  • number 10 indicates, as a whole, a sump according to an explanatory embodiment of the present invention.
  • Sump 10 is suited to be mounted in a dishwasher, in particular in correspondence to the bottom of the washing tank or chamber, which is delimited by the casing of the dishwasher. More in detail, sump 10 is suited to store and deliver water, typically by means of one or more spray impellers, inside the washing tank.
  • Sump 10 comprises a main body 12 , which is preferably monolithic, is manufactured, for example, with a plastic material by means of injection molding, is open on the upper side and has:
  • collecting portion 12 b is adapted to store water coming from the washing tank and entering through collecting opening 13 .
  • supply portion 12 c is suited to deliver the water stored in supply portion 12 b, thus causing it to flow out through supply opening 14 .
  • sump 10 comprises a hydraulic washing pump 16 of the known type, which is mounted on main body 12 , so that its impeller is able to rotate around an axis X that is substantially horizontal.
  • This washing pump 16 for example manufactured as an electropump, is suited to suck the water stored in collecting portion 12 b and to direct this water towards supply portion 12 c, so that it can be delivered through supply opening 14 .
  • hydraulic washing pump 16 is mounted in a suction fitting 18 , which is peripherally obtained on collecting portion 12 b and, for example, is oriented in a substantially radial direction.
  • suction fitting 18 receives a feeding case or scroll 20 belonging to hydraulic washing pump 16 and hydraulically communicating, at the inlet, with collecting portion 12 b and, at the outlet, with supply portion 12 c.
  • hydraulic washing pump 16 comprises an impeller (not numbered), adapted to rotate in the feeding scroll 20 around axis X and to suck the water contained in collecting portion 12 b, and a motor (not shown), for example of the electric type, which is suited to control the impeller during its rotation. In the embodiment shown, therefore, washing pump 16 is suited to suck the water stored in collecting portion 12 b, thus causing to flow out of the latter in a substantially radial direction towards suction fitting 18 .
  • said hydraulic washing pump 16 is of the centrifugal type, since it sucks the water contained in collecting portion 12 b in an axial direction relative to rotation axis X of the impeller, so as to deliver the water in a tangential direction relative to said direction axis X.
  • peripheral portion 12 a has a substantially concave shape, adapted to create a basin to covey water (for example by providing suitable surfaces that slightly slope down) towards collecting opening 13 of collecting portion 12 b, which, during the assembly and the use of the dishwasher with which sump 10 is associated, remains open on the upper side.
  • collecting portion 12 b and supply portion 12 c respectively have an approximately cylindrical shape, if necessary slightly tapered downwards.
  • the cross section (obtained through a horizontal secant plane) shown by collecting portion 12 b and by supply portion 12 c is smaller relative to the overall cross section offered by peripheral portion 12 a.
  • the cross section of collecting portion 12 b is substantially larger than the one shown by supply portion 12 c.
  • supply portion 12 c has a substantially circular cross section.
  • a hydraulic connection adapted to permit the fluid outflow controlled by washing pump 16 .
  • the hydraulic connection is provided downstream of washing pump 16 , in particular in correspondence to the outlet thereof, and upstream of supply portion 12 c.
  • supply portion 12 c preferably comprises, in turn, a delivery fitting 19 , which, for example, is arranged laterally and projects transversely from supply portion 12 c.
  • a duct D (not shown), for example an elbow pipe or a hose, so as to allow the liquid flow to flow from collecting portion 12 b towards supply portion 12 c.
  • the liquid stored, in use, by collecting portion 12 b is sucked by washing pump 16 through delivery fitting 19 , which pushes it through its outlet and into said duct D, which subsequently leads to delivery fitting 19 and finally gets to supply portion 12 c.
  • supply opening 14 is closed in fluid-tight manner, for example by means of an interlocking coupling, by a lid 22 (see in particular FIG. 3 ) having at least one outlet hole 24 , adapted to let out the water flowing into supply portion 12 c from collecting portion 12 b.
  • lid 22 comprises a pair of outlet holes 24 , each of which can be hydraulically connected, in a known manner, to a respective rotary spraying organ (not shown) of the dishwasher.
  • supply portion 12 c is designed so as to be adapted to house, through supply opening 14 , at least one device selected in the group consisting of:
  • At least one between heating system 26 and flow diverter 28 is accessible and housed, preferably in a removable manner, in supply portion 12 c through supply opening 14 .
  • the heating system comprises a resistor 26 , adapted to be run through by an electric current, so as to transfer heat to the water flow flowing through supply portion 12 c according to predetermined criteria.
  • resistor 26 is housed, preferably in a removable manner, in the receptacle defined by supply portion 12 c and is properly waterproofed in a known manner.
  • resistor 26 is folded, preferably defining a substantially U-shaped form, inside the cavity or chamber defined by supply portion 12 c.
  • flow diverter 28 comprises one or more holes 30 , adapted to be positioned, especially by means of the rotation movement of a motor 32 , in correspondence to outlet holes 24 according to predetermined criteria.
  • the outlet holes are oriented in a substantially vertical direction, for example they are manufactured as sleeves projecting from lid 22 and adapted to be connected to the respective impellers by means of hydraulic ducts of the known type.
  • flow diverter 28 is an organ of the rotary type, such as a disc that rotates around a substantially vertical axis.
  • said disc has one or more holes 30 and one or more obstructions, each of them being suited to be arranged, every time, in positions facing or staggered relative to outlet holes 24 , thus determining the controlled delivery of water through one impeller or both impellers of the dishwasher.
  • flow diverter 28 is coupled to a motor 32 (see in particular FIGS. 2 and 5 ), for example an electric motor, which is mounted on supply portion 12 c and is adapted to control the movement of flow diverter 28 .
  • motor 32 is provided with a suitable reduction mechanism (not shown), for example a gear, which cooperates with flow diverter 28 to move it and cause it to rotate.
  • motor 32 and the possible reduction mechanism are separated, in a fluid-tight manner, from the receptacle defined by supply portion 12 c.
  • motor 32 ends with a shaft 34 , which is centrally splined to flow diverter 28 , which is advantageously manufactured as a disc with a substantially circular shape.
  • motor 32 is externally supported by supply portion 12 c.
  • motor 32 is supported by bottom 36 of supply portion 12 c, for example it is fixed by means of screws.
  • flow diverter 28 rotates around a substantially vertical axis, which, in this embodiment, is advantageously perpendicular to the horizontal plane on which rotation axis X of the impeller of washing pump 16 lies.
  • bottom 36 of hollow supply portion 12 c has a hole 38 , which is substantially arranged in the center and is adapted to be run through by shaft 34 of motor 32 , on top of which there is advantageously splined flow diverter 28 ; furthermore, lid 22 , which has the pair of outlet holes 24 , is fixed on supply opening 14 .
  • the seal between shaft 34 and hole 38 is radially guaranteed by a gasket.
  • hole 38 is manufactured by removing a suitable removable item provided on the mold used for the injection molding of hollow supply portion 12 c.
  • resistor 26 is mounted in an annular seat 40 (numbered in FIG. 5 ), which is obtained close to bottom of the second hollow portion 12 c.
  • said annular seat 40 surrounds hole 38 , adapted to house shaft allowing it to freely rotate.
  • an insert 42 which is advantageously arranged in the center relative to annular seat 40 and is made of elastomer or rubber, permits the rotation of shaft 34 and the hydraulic seal between motor 32 and hollow portion 12 c.
  • main body 12 is particularly advantageous in terms of simplicity in the assembly of flow diverter 28 and/or of heating system 26 .
  • sump 10 can be easily and effectively adjusted to a dishwasher structure that does not envisage an alternate washing, since hole 38 is left out during the injection molding step and, during the assembly, neither motor 32 nor flow diverter 28 are mounted, regardless of whether a heating system for the water to be delivered, which is built-in in sump 10 itself, has to be provided or not.
  • hole 38 can be left out by properly installing said removable item on the mold used for the injection molding of hollow supply portion 12 c.
  • the structure described above allows operators to easily perform their tasks during the maintenance of sump 10 , in case they need to access flow diverter 28 and resistor 26 , since they only need to remove lid 22 and take out the components contained therein through supply opening 14 .
  • the second hollow portion 12 c supports at least one peripheral fitting 44 , which leads, in the embodiment shown, in a lateral direction, into the receptacle defined inside the second hollow portion 12 c and adapted to house control and/or safety means 46 .
  • said peripheral fitting 44 is manufactured as a tubular section that transversely runs through the lateral surface of supply portion 12 c.
  • control means 46 are suited to perform at least one function selected between:
  • control means 46 can comprise one or more components adapted to be used as sensors, for example:
  • control means 46 can comprise one or more apparatuses adapted to control the supply of electric power to heating system 26 according to predetermined criteria.
  • these apparatuses can comprise at least one current interrupter or switch, which is able to interrupt the current flow through resistor 26 according to predetermined control criteria, which optionally depend on indicating data detected by one or more of said components or sensors, for example by said pressure sensor.
  • supply portion 12 c has a plurality of said peripheral fittings 44 , which are laterally supported by the second hollow portion 12 c, so as to receive a plurality of said control and/or safety means 46 .
  • supply portion 12 c has a manifold or tubular sleeve, which is substantially horizontally oriented and intersects supply portion 12 c in a transverse direction.
  • the tubular manifold radially communicates with the receptacle defined by supply portion 12 c and has axial ends where delivery fitting 19 and one of peripheral fittings 44 are defined.
  • the tubular manifold also has at least one further peripheral fitting 44 , which radially projects outwards, thus creating a particularly compact arrangement to house a plurality of different kinds of control means 46 .
  • peripheral fittings 44 allows users to customize sump 10 as a function of the different technical features and of the installation needs of the dishwasher, thus providing it with proper components and with apparatuses that are suited to be interfaced with the control system of the machine.
  • a monolithic main body 12 involves, besides the economical advantages in the production of sump 10 and the reduction of the possible water leaking points during its life, the advantage of permitting preliminary tests and inspections, thus allowing operators to perform simulations in laboratories or in assembly testing lines before sump 10 is fitted in the dishwasher.
  • sump 10 also comprises a draining fitting 48 , which communicates with—and laterally projects from—collecting portion 12 b and, furthermore, is associated with a hydraulic draining pump (not shown).
  • draining fitting 48 laterally projects, for example in a radial direction, from an opposite side relative to suction fitting 18 .
  • draining fitting 48 defines a draining case or screw, adapted to house the impeller (not shown) belonging to the draining pump (not shown), which can preferably rotate around a substantially horizontal axis, so as to drain the water stored in collecting portion 12 b on the outside of the washing tank.
  • the hydraulic draining pump is of the centrifugal type and can be operated by a motor, generally of the electric type, suited to control the rotation of said impeller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Instrument Panels (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Food-Manufacturing Devices (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)
US14/435,071 2012-10-11 2013-10-09 Sump, in particular for a dish washing machine, and methdo for manufacturing the same Abandoned US20150265131A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTO2012A000892 2012-10-11
IT000892A ITTO20120892A1 (it) 2012-10-11 2012-10-11 Pozzetto, in particolare per una macchina lavastoviglie, e procedimento per la sua fabbricazione.
PCT/IB2013/059232 WO2014057434A2 (en) 2012-10-11 2013-10-09 Sump, in particular for a dish washing machine, and method for manufacturing the same

Publications (1)

Publication Number Publication Date
US20150265131A1 true US20150265131A1 (en) 2015-09-24

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ID=47324294

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US14/435,071 Abandoned US20150265131A1 (en) 2012-10-11 2013-10-09 Sump, in particular for a dish washing machine, and methdo for manufacturing the same

Country Status (6)

Country Link
US (1) US20150265131A1 (zh)
EP (1) EP2906099B1 (zh)
CN (1) CN104780821B (zh)
IT (1) ITTO20120892A1 (zh)
PL (1) PL2906099T3 (zh)
WO (1) WO2014057434A2 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10314458B2 (en) * 2017-03-28 2019-06-11 Haier Us Appliance Solutions, Inc. Fluid circulation system for dishwasher appliances and related methods
CN113226145A (zh) * 2018-12-20 2021-08-06 伊莱克斯电器股份公司 用于洗碗机的流动控制器
WO2024208682A1 (de) * 2023-04-05 2024-10-10 BSH Hausgeräte GmbH Haushalts-geschirrspülmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106725180B (zh) * 2016-12-13 2020-05-08 佛山市顺德区美的洗涤电器制造有限公司 洗碗机
CA3141520A1 (en) * 2019-06-03 2020-12-10 Ecolab Usa Inc. Dishwasher sump and dishwasher apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606839B1 (ko) 2004-09-14 2006-08-01 엘지전자 주식회사 식기세척기
EP1723888A1 (en) * 2005-05-17 2006-11-22 Bonferraro S.p.A. Dishwasher with automatic alternate water distribution
EP1728461A1 (en) * 2005-06-01 2006-12-06 Coprecitec, S.L. Household dishwasher with a water distribution chamber
KR101283781B1 (ko) * 2006-09-27 2013-07-08 엘지전자 주식회사 식기 세척기
US8424546B2 (en) * 2008-07-15 2013-04-23 Electrolux Home Products, Inc. Sump assembly for a dishwasher, and associated method
KR20100067571A (ko) * 2008-12-11 2010-06-21 삼성전자주식회사 식기세척기
ES2422592T3 (es) * 2009-03-27 2013-09-12 Electrolux Home Prod Corp Lavavajillas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10314458B2 (en) * 2017-03-28 2019-06-11 Haier Us Appliance Solutions, Inc. Fluid circulation system for dishwasher appliances and related methods
CN113226145A (zh) * 2018-12-20 2021-08-06 伊莱克斯电器股份公司 用于洗碗机的流动控制器
WO2024208682A1 (de) * 2023-04-05 2024-10-10 BSH Hausgeräte GmbH Haushalts-geschirrspülmaschine

Also Published As

Publication number Publication date
CN104780821A (zh) 2015-07-15
CN104780821B (zh) 2017-08-01
EP2906099B1 (en) 2016-11-30
WO2014057434A2 (en) 2014-04-17
ITTO20120892A1 (it) 2014-04-12
EP2906099A2 (en) 2015-08-19
PL2906099T3 (pl) 2017-06-30
WO2014057434A3 (en) 2014-05-30

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AS Assignment

Owner name: BITRON S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BRIGNONE, ENZO;REEL/FRAME:035815/0623

Effective date: 20150407

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION