EP1854392A1 - Method for washing glass articles in a household dishwashing machine - Google Patents

Method for washing glass articles in a household dishwashing machine Download PDF

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Publication number
EP1854392A1
EP1854392A1 EP06113809A EP06113809A EP1854392A1 EP 1854392 A1 EP1854392 A1 EP 1854392A1 EP 06113809 A EP06113809 A EP 06113809A EP 06113809 A EP06113809 A EP 06113809A EP 1854392 A1 EP1854392 A1 EP 1854392A1
Authority
EP
European Patent Office
Prior art keywords
washing
water
articles
dishwashing machine
glass articles
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.)
Granted
Application number
EP06113809A
Other languages
German (de)
French (fr)
Other versions
EP1854392B1 (en
Inventor
Enrico Brambilla
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
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to AT06113809T priority Critical patent/ATE529032T1/en
Priority to EP06113809A priority patent/EP1854392B1/en
Priority to EP10012267A priority patent/EP2329756A1/en
Publication of EP1854392A1 publication Critical patent/EP1854392A1/en
Application granted granted Critical
Publication of EP1854392B1 publication Critical patent/EP1854392B1/en
Anticipated expiration legal-status Critical
Not-in-force legal-status Critical Current

Links

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
    • A47L15/0065—Washing or rinsing machines for crockery or tableware specially adapted for drinking glasses
    • 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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • A47L2401/12—Water temperature
    • 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
    • A47L2501/07—Consumable products, e.g. detergent, rinse aids or salt

Definitions

  • the present invention relates to a method for washing glass articles in a household dishwashing machine.
  • a dosed amount of detergent is added to said water for forming a washing liquor that is heated up to reach a predetermined temp erature.
  • the detergent can be rapidly solved in water thanks to the progressive heating of the liquor and thanks to the agitation induced by spraying the liquor on the glass articles while the heating phase is running.
  • This process which is preliminary to the effective washing phase, causes the glass articles to be exposed to an alkaline environment for a time which is substantially equal to the entire time required to the machine for cleaning the articles.
  • the aim of the present invention is therefore to solve the noted problems and thus providing a method for washing glass articles in a household dishwashing machine that reduces the glass damages.
  • Another object of the present invention is to provide a method for washing glass articles in a household dishwashing machine that can be performed in already existing dishwashing machine.
  • the method for washing glass articles according to the present invention can be carried out in a household dishwashing machine comprising a process controlling unit that has been programmed for performing the steps that will be described further on. For this reason in an already existing household dishwashing machine the control unit can be reprogrammed or substituted in order to adapt the machine to perform the washing method disclosed in the present Application.
  • the household dishwashing machine is structurally well known. It substantially comprises a washing tub containing movable racks adapted to receive articles to be washed, in particular glassware. Heating means are provided within said tub for heating water drained for the main water supply through a pump. Spraying means are disposed in the tub for dispersing water with or without a washing agent on the articles to be washed.
  • an amount of water is supplied to the washing tub by means of a pump and a conduit connected to the water net.
  • the amount of water is heated to a temperature whose value is predetermined depending on the kind of washing cycle the user wants to perform. While the heating phase is running, the water contained in the tub is sprayed on the articles to be washed in order to wet them and to remove food or liquid remains from them. However, if desired, the water heating phase can be completed, i.e. the water in the washing tub is heated up to a predetermined temperature, without spraying water on articles. This is the case when an articles pre-wash with hot water without detergent is desired.
  • a washing agent is added to the hot water for forming a washing liquor that is sprayed on the articles for washing them.

Landscapes

  • Detergent Compositions (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The present invention relates to a method for washing glass articles in a household dishwashing machine.
According to the invention, the method for washing glass articles in a household dishwashing machine having a washing tub and heating means for heating water, comprises the following steps: (A) Supplying water to the washing tub; (B) Heating the water in the washing tub up to a predetermined temperature through said heating means; (C) Spraying the water on the articles to be washed; (D) Adding a washing agent to the water for forming a washing liquor only after the water has reached said predetermined temperature, and (E) Spraying the washing liquor on the articles.

Description

  • The present invention relates to a method for washing glass articles in a household dishwashing machine.
  • It is known in the art that a repetitive and frequent washing of glass articles in an automatic washing machine damages said articles. Such damages, that consists in a progressive alteration of the glass structure, are prevalently caused by the time during which the glass articles are exposed to a alkaline environment at high temperature. The alkaline environment is generated by the detergent used for washing, therefore damages caused to the glass matrix depend on the time in which a washing agent solved in hot water acts on the articles to be washed. However, the speed with which glass articles are damaged and the entity of said damages depends not only on glass type and its quality but also on how high is the temperature of the washing liquor during the washing phase.
  • In conventional washing processes normally carried out in household dishwashers of known type, after having supplied a set amount of water to the washing tub, a dosed amount of detergent is added to said water for forming a washing liquor that is heated up to reach a predetermined temp erature. The detergent can be rapidly solved in water thanks to the progressive heating of the liquor and thanks to the agitation induced by spraying the liquor on the glass articles while the heating phase is running.
  • This process, which is preliminary to the effective washing phase, causes the glass articles to be exposed to an alkaline environment for a time which is substantially equal to the entire time required to the machine for cleaning the articles.
  • In glassware washing machines for professional use detergent is normally added to water that is supplied in a "hot" state by a water heater displaced near the washing machine or inside the latter. Such water heater is provided in order to ensure that a sufficient amount of hot water is always ready to be used for carrying out a washing cycle. This allows the user to perform promptly an automatic washing when needed. In such kind of washing machine damages to glassware are limited because the detergent is kept in contact with glass for a short time. However, in order to obtain such advantage a water heater must be associated to the washing machine and this causes the machine itself to be cumbersome and difficult to be installed in a kitchen of a house where spaces are limited.
  • The aim of the present invention is therefore to solve the noted problems and thus providing a method for washing glass articles in a household dishwashing machine that reduces the glass damages.
  • Another object of the present invention is to provide a method for washing glass articles in a household dishwashing machine that can be performed in already existing dishwashing machine.
  • Advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and advantages of the invention may be realised and attained as particularly pointed out in the appended claim.
  • The method for washing glass articles according to the present invention can be carried out in a household dishwashing machine comprising a process controlling unit that has been programmed for performing the steps that will be described further on. For this reason in an already existing household dishwashing machine the control unit can be reprogrammed or substituted in order to adapt the machine to perform the washing method disclosed in the present Application.
  • Apart from a suitably programmed control unit, the household dishwashing machine is structurally well known. It substantially comprises a washing tub containing movable racks adapted to receive articles to be washed, in particular glassware. Heating means are provided within said tub for heating water drained for the main water supply through a pump. Spraying means are disposed in the tub for dispersing water with or without a washing agent on the articles to be washed.
  • According to the present invention, an amount of water is supplied to the washing tub by means of a pump and a conduit connected to the water net. The amount of water is heated to a temperature whose value is predetermined depending on the kind of washing cycle the user wants to perform. While the heating phase is running, the water contained in the tub is sprayed on the articles to be washed in order to wet them and to remove food or liquid remains from them. However, if desired, the water heating phase can be completed, i.e. the water in the washing tub is heated up to a predetermined temperature, without spraying water on articles. This is the case when an articles pre-wash with hot water without detergent is desired.
  • Only when the water in the tub has reached the predetermined temperature set in accordance with the washing program, a washing agent is added to the hot water for forming a washing liquor that is sprayed on the articles for washing them.
  • In this way the articles to be washed are kept in contact with the alkaline environment generated by the addition of a detergent to the water only during the time effectively dedicated to the washing procedure. With the present method, articles to be washed, in particular glassware, are therefore prevented from being exposed to aggressive conditions during the water heating phase like happens in a washing process of known type.
  • Naturally all the operational commands to the operative parts of the dishwashing machine are given by a process controlling unit suitably programmed.
  • Conclusively it can be stated that the method for washing glass articles disclosed herein reduced the damaging effects of the washing agent on glassware whose life is therefore advantageously extended.

Claims (3)

  1. Method for washing glass articles in a household dishwashing machine having a washing tub and heating means for heating water, said method being characterised by comprising the following steps: (A) Supplying water to the washing tub; (B) Heating the water in the washing tub up to a predetermined temperature through said heating means; (C) Spraying the water on the articles to be washed; (D) Adding a washing agent to the water for forming a washing liquor only after the water has reached said predetermined temperature, and (E) Spraying the washing liquor on the articles.
  2. Method for washing glass according to claim 1 wherein steps (B) and (C) are performed contemporaneously.
  3. A dishwashing machine having a process controlling unit programmed to carry out the method of claim 1 or 2.
EP06113809A 2006-05-11 2006-05-11 Method for washing glass articles in a household dishwashing machine Not-in-force EP1854392B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT06113809T ATE529032T1 (en) 2006-05-11 2006-05-11 METHOD FOR WASHING GLASS ITEMS IN A HOUSEHOLD DISHWASHER
EP06113809A EP1854392B1 (en) 2006-05-11 2006-05-11 Method for washing glass articles in a household dishwashing machine
EP10012267A EP2329756A1 (en) 2006-05-11 2006-05-11 Method for washing glass articles in a household dishwashing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06113809A EP1854392B1 (en) 2006-05-11 2006-05-11 Method for washing glass articles in a household dishwashing machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10012267.0 Division-Into 2010-09-30

Publications (2)

Publication Number Publication Date
EP1854392A1 true EP1854392A1 (en) 2007-11-14
EP1854392B1 EP1854392B1 (en) 2011-10-19

Family

ID=37198576

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06113809A Not-in-force EP1854392B1 (en) 2006-05-11 2006-05-11 Method for washing glass articles in a household dishwashing machine
EP10012267A Withdrawn EP2329756A1 (en) 2006-05-11 2006-05-11 Method for washing glass articles in a household dishwashing machine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10012267A Withdrawn EP2329756A1 (en) 2006-05-11 2006-05-11 Method for washing glass articles in a household dishwashing machine

Country Status (2)

Country Link
EP (2) EP1854392B1 (en)
AT (1) ATE529032T1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB907057A (en) * 1959-04-30 1962-10-03 Zip Ind Ltd Improvements in or relating to methods of washing drinking glasses and/or drinking glass washing machines
DE1210150B (en) * 1962-09-11 1966-02-03 Braun Ag Device for the allocation of detergents and rinsing agents in automatic washing machines such as dish washing machines
US3718149A (en) * 1970-02-04 1973-02-27 Zanussi A Spa Industrie Dish-washer
EP0611159A1 (en) * 1993-02-11 1994-08-17 Brightwell Dispensers Limited Improvements in dosing systems
US6058946A (en) * 1996-10-25 2000-05-09 Bellati; Riccardo Paolo Federico Delivery device
FR2800982A1 (en) * 1999-11-13 2001-05-18 Aeg Hausgeraete Gmbh HOUSEHOLD APPLIANCE GUIDING A WORKFLOW, IN PARTICULAR A DISHWASHER AND / OR A WASHING MACHINE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1788921B1 (en) * 2004-09-14 2016-09-14 LG Electronics Inc. Dish washer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB907057A (en) * 1959-04-30 1962-10-03 Zip Ind Ltd Improvements in or relating to methods of washing drinking glasses and/or drinking glass washing machines
DE1210150B (en) * 1962-09-11 1966-02-03 Braun Ag Device for the allocation of detergents and rinsing agents in automatic washing machines such as dish washing machines
US3718149A (en) * 1970-02-04 1973-02-27 Zanussi A Spa Industrie Dish-washer
EP0611159A1 (en) * 1993-02-11 1994-08-17 Brightwell Dispensers Limited Improvements in dosing systems
US6058946A (en) * 1996-10-25 2000-05-09 Bellati; Riccardo Paolo Federico Delivery device
FR2800982A1 (en) * 1999-11-13 2001-05-18 Aeg Hausgeraete Gmbh HOUSEHOLD APPLIANCE GUIDING A WORKFLOW, IN PARTICULAR A DISHWASHER AND / OR A WASHING MACHINE

Also Published As

Publication number Publication date
ATE529032T1 (en) 2011-11-15
EP2329756A1 (en) 2011-06-08
EP1854392B1 (en) 2011-10-19

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