US20140076364A1 - Cleaning method for machine dishwashing - Google Patents

Cleaning method for machine dishwashing Download PDF

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Publication number
US20140076364A1
US20140076364A1 US14/118,706 US201114118706A US2014076364A1 US 20140076364 A1 US20140076364 A1 US 20140076364A1 US 201114118706 A US201114118706 A US 201114118706A US 2014076364 A1 US2014076364 A1 US 2014076364A1
Authority
US
United States
Prior art keywords
cleaning
temperature
cleaning solution
process according
preferred
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
US14/118,706
Other languages
English (en)
Inventor
Christoph Maul
Werner Strothoff
Gerold Carlhoff
Sven Klose
Patrick Schmidt-Dobrowolny
Dirk Kullwitz
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.)
Ecolab USA Inc
Original Assignee
Ecolab USA Inc
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 Ecolab USA Inc filed Critical Ecolab USA Inc
Publication of US20140076364A1 publication Critical patent/US20140076364A1/en
Assigned to ECOLAB USA INC. reassignment ECOLAB USA INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KULLWITZ, DIRK, CARLHOFF, GEROLD, KLOSE, Sven
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
    • A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0007—Washing phases
    • 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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • 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
    • 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
    • A47L15/4236—Arrangements to sterilize or disinfect dishes or washing liquids
    • 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
    • A47L2601/20—Other treatments, e.g. dry cleaning
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/40—Specific cleaning or washing processes
    • C11D2111/44—Multi-step processes

Definitions

  • This invention relates generally to the field of machine dishwashing processes, e.g. for cleaning tableware or other surfaces soiled with food remains. More particular this invention relates to field of continuous or discontinuous machine dishwashing processes in single or multi-tank dish machines.
  • step a) and/or step c) is performed at a temperature of ⁇ 40 and ⁇ 50° C., preferably around 45° C.
  • step b) and/or step d) is performed at a temperature of ⁇ 55 and ⁇ 70° C., preferably between ⁇ 60 and ⁇ 65° C. and most preferred around 63° C.
  • the cleaning solution has a pH of ⁇ 11 and ⁇ 12.
  • the cleaning solution has a pH of ⁇ 2 and ⁇ 2.5.
  • step a) is performed for ⁇ 10 s and ⁇ 60 s.
  • step b) is performed for ⁇ 10 s and ⁇ 20 s.
  • step c) is performed for ⁇ 20 s and ⁇ 60 s.
  • step d) is performed for ⁇ 5 s and ⁇ 15 s.
  • Step a) is the first alkaline cleaning step in the context of the invention and is performed using a cleaning solution having a pH of ⁇ 10.5 and ⁇ 13, preferably ⁇ 11 and ⁇ 12.
  • This pH can be achieved e.g. by using hydroxide solution and/or hydroxide/buffer solution, especially hydroxide/phosphate buffer solution
  • the cleaning solution used in step a) may include one or more of the following ingredients:
  • the cleaning solution is sprayed onto the tableware trough a rotating washing arm as a heavy water curtain.
  • Step a) is performed at a temperature of ⁇ 30 and ⁇ 55° C., which means that the cleaning solution which is applied to the tableware has this temperature. More preferred, step a) is performed at a temperature of ⁇ 40 and ⁇ 50° C., preferably around 45° C.
  • Step a) preferably is performed for ⁇ 10 s and ⁇ 60 s, more preferred for ⁇ 20 s and ⁇ 30 s.
  • the duration of step a) is not limiting for the invention, only for some preferred applications within the same.
  • Step b) is the acidic cleaning step in the context of the invention and is performed using a cleaning solution having a pH of ⁇ 1 and ⁇ 3, preferably ⁇ 2 and ⁇ 2.5 This pH can be achieved e.g. by using an inorganic or organic acid.
  • Suitable acidic compounds in the context of this invention which are insofar preferred are sulfuric acid, nitric acid, phosphoric acid, formic acid, acetic acid, propanoic acid, glycolic acid, citric acid, maleic acid, lactic acid, gluconic acid, alkanesulfonic acid, amidosulfonic acid, succinic acid, glutaric acid, adipic acid, phosphonic acids, polyacrylic acids or mixtures thereof and, in a most particularly embodiment, from formic acid, glycolic acid, gluconic acid, amidosulfonic acid or the alkanesulfonic acids, more particularly methanesulfonic acid or mixtures thereof. Especially preferred is methanesulfonic acid.
  • the cleaning solution used in step b) may include one or more of the following ingredients:
  • the cleaning solution is allowed to act on the tableware and the soil for a certain contact time (during which spraying stops).
  • the tableware is not intentionally sprayed during the contact time.
  • the cleaning solution is sprayed onto the tableware as a fine, gentle mist-like liquid spray.
  • the cleaning solution is applied to the tableware as foam.
  • the cleaning solution is applied to the tableware in droplet form or by the Ecolab process known commercially as thin film cleaning (TFC).
  • TFC thin film cleaning
  • Step b) is performed at a temperature of ⁇ 50 and ⁇ 75° C., which means that the cleaning solution which is applied to the tableware has this temperature. More preferred, step b) is performed at a temperature of ⁇ 60 and ⁇ 65° C. and most preferred around 63° C.
  • Step b) preferably is performed for ⁇ 10 s and ⁇ 20 s.
  • the duration of step b) is not limiting for the invention, only for some preferred applications within the same.
  • Step c) is the second alkaline cleaning step in the context of the invention and is performed using a cleaning solution having a pH of ⁇ 10.5 and ⁇ 13, preferably ⁇ 11 and ⁇ 12.
  • This pH can be achieved e.g. by using hydroxide solution and/or hydroxide/buffer solution, especially hydroxide/phosphate buffer solution
  • the cleaning solution used in step a) may include one or more of the following ingredients:
  • the cleaning solution is sprayed onto the tableware trough a rotating washing arm as a heavy water curtain.
  • Step c) is performed at a temperature of ⁇ 30 and ⁇ 55° C., which means that the cleaning solution which is applied to the tableware has this temperature. More preferred, step c) is performed at a temperature of ⁇ 40 and ⁇ 50° C., preferably around 45° C.
  • Step c) preferably is performed for ⁇ 20 s and ⁇ 60 s, more preferred ⁇ 45 s and ⁇ 55 s.
  • the duration of step c) is not limiting for the invention, only for some preferred applications within the same.
  • Step d) is the neutral rinsing step in the context of the invention and is performed using a rinse aid solution having a pH of ⁇ 5 and ⁇ 7.
  • the rinse aid solution used in step d) may include one or more of the following ingredients:
  • the cleaning solution is allowed to act on the tableware and the soil for a certain contact time (during which spraying stops), as it step d) usually is the last step in the dishwashing cycle.
  • the tableware is not intentionally sprayed during the contact time.
  • Step d) is performed at a temperature of ⁇ 50 and ⁇ 75° C., which means that the cleaning solution which is applied to the tableware has this temperature. More preferred, step b) is performed at a temperature of ⁇ 60 and ⁇ 65° C. and most preferred around 63° C.
  • Step d) preferably is performed for ⁇ 5 s and ⁇ 15 s, preferably ⁇ 9 s and ⁇ 12 s.
  • the duration of step d) is not limiting for the invention, only for some preferred applications within the same.
  • a ca. 6% aqueous composition containing corn starch was cooled to 75 ° C. after boiling and was applied to each cup with a brush in a quantity of ca. 4 ml.
  • the cups thus treated were left to stand for at least 3 hours and then dried at ca. 100° C. for 16 hours.
  • Example II is identical with Example I, only that an Electrolux “Clean and Green” WT65 dishwashing machine, sold by Electrolux company, Sweden was used.

Landscapes

  • Detergent Compositions (AREA)
  • Washing And Drying Of Tableware (AREA)
US14/118,706 2011-05-19 2011-05-19 Cleaning method for machine dishwashing Abandoned US20140076364A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/058147 WO2012155976A1 (en) 2011-05-19 2011-05-19 Cleaning method for machine dishwashing

Publications (1)

Publication Number Publication Date
US20140076364A1 true US20140076364A1 (en) 2014-03-20

Family

ID=44119132

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/118,706 Abandoned US20140076364A1 (en) 2011-05-19 2011-05-19 Cleaning method for machine dishwashing

Country Status (9)

Country Link
US (1) US20140076364A1 (zh)
EP (1) EP2709508A1 (zh)
JP (1) JP2014513624A (zh)
KR (1) KR20140035413A (zh)
CN (1) CN103547203B (zh)
AU (1) AU2011368660B2 (zh)
BR (1) BR112013027407A2 (zh)
CA (1) CA2831444A1 (zh)
WO (1) WO2012155976A1 (zh)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600602A (en) * 1969-10-13 1971-08-17 Gen Electric Control arrangement for a washing machine
US4730630A (en) * 1986-10-27 1988-03-15 White Consolidated Industries, Inc. Dishwasher with power filtered rinse
US5725001A (en) * 1995-10-10 1998-03-10 Aeg Hausgerate Gmbh Dishwasher with pH-controlled program pre-selection
US20040194810A1 (en) * 2002-05-31 2004-10-07 Werner Strothoff Methods and compositions for the removal of starch
US20050133064A1 (en) * 2002-08-21 2005-06-23 Bsh Bosch Und Siemens Hausgerate Gmbh Method for adapting a rinsing program in a dishwasher machine, and corresponding dishwasher machine
US20050257813A1 (en) * 2004-05-20 2005-11-24 Shin Kap S Dishwasher and door locking device for the same
US20070144558A1 (en) * 2003-12-16 2007-06-28 Bsh Bosch Und Siemens Hausgerate, Gmbh Dishwashing machine having a dosing device for additives and associated method
US20080127997A1 (en) * 2004-12-09 2008-06-05 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwasher With a Sorption Drier and Method For the Operation Thereof
US20090038644A1 (en) * 2005-12-27 2009-02-12 BSH Bosch und Siemens Hausgeräte GmbH Washing Programme for a Dishwasher Having a Shorter Cycle With a Constant Cleaning Efficiency
US20090235957A1 (en) * 2007-12-10 2009-09-24 Lg Electronics Inc. Method for controlling dishwasher
US20100294321A1 (en) * 2008-01-28 2010-11-25 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher
US20110203620A1 (en) * 2008-10-27 2011-08-25 Zehra Ulger Dishwasher using ozone water

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5186912A (en) * 1991-01-03 1993-02-16 Ecolab, Inc. Controlled release dishwasher detergent dispenser
TW338713B (en) * 1995-09-06 1998-08-21 Sharp Kk A dishwasher
DE10127919A1 (de) * 2001-06-08 2002-12-19 Ecolab Gmbh & Co Ohg Reinigungsverfahren zur Stärkeentfernung
JP2003135361A (ja) * 2001-10-31 2003-05-13 Sanyo Electric Co Ltd 食器洗い機
EP1477552A1 (en) * 2003-05-13 2004-11-17 Ecolab Inc. Method for cleaning articles in a dish washing machine
WO2005068598A1 (en) * 2003-12-18 2005-07-28 Ecolab Inc. Methods and compositions for the removal of starch

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600602A (en) * 1969-10-13 1971-08-17 Gen Electric Control arrangement for a washing machine
US4730630A (en) * 1986-10-27 1988-03-15 White Consolidated Industries, Inc. Dishwasher with power filtered rinse
US5725001A (en) * 1995-10-10 1998-03-10 Aeg Hausgerate Gmbh Dishwasher with pH-controlled program pre-selection
US20040194810A1 (en) * 2002-05-31 2004-10-07 Werner Strothoff Methods and compositions for the removal of starch
US20050133064A1 (en) * 2002-08-21 2005-06-23 Bsh Bosch Und Siemens Hausgerate Gmbh Method for adapting a rinsing program in a dishwasher machine, and corresponding dishwasher machine
US20070144558A1 (en) * 2003-12-16 2007-06-28 Bsh Bosch Und Siemens Hausgerate, Gmbh Dishwashing machine having a dosing device for additives and associated method
US20050257813A1 (en) * 2004-05-20 2005-11-24 Shin Kap S Dishwasher and door locking device for the same
US20080127997A1 (en) * 2004-12-09 2008-06-05 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwasher With a Sorption Drier and Method For the Operation Thereof
US20090038644A1 (en) * 2005-12-27 2009-02-12 BSH Bosch und Siemens Hausgeräte GmbH Washing Programme for a Dishwasher Having a Shorter Cycle With a Constant Cleaning Efficiency
US20090235957A1 (en) * 2007-12-10 2009-09-24 Lg Electronics Inc. Method for controlling dishwasher
US20100294321A1 (en) * 2008-01-28 2010-11-25 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher
US20110203620A1 (en) * 2008-10-27 2011-08-25 Zehra Ulger Dishwasher using ozone water

Also Published As

Publication number Publication date
BR112013027407A2 (pt) 2017-01-17
JP2014513624A (ja) 2014-06-05
CN103547203A (zh) 2014-01-29
KR20140035413A (ko) 2014-03-21
CN103547203B (zh) 2016-03-30
AU2011368660A1 (en) 2013-10-17
AU2011368660B2 (en) 2016-09-08
WO2012155976A1 (en) 2012-11-22
EP2709508A1 (en) 2014-03-26
CA2831444A1 (en) 2012-11-22

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AS Assignment

Owner name: ECOLAB USA INC., MINNESOTA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CARLHOFF, GEROLD;KLOSE, SVEN;KULLWITZ, DIRK;SIGNING DATES FROM 20160511 TO 20160513;REEL/FRAME:038811/0344

STCB Information on status: application discontinuation

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