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
  • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
  • A47L15/0047—Energy or water consumption, e.g. by saving energy or water
• • 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
  • A47L15/0005—Rinsing phases, e.g. pre-rinsing, intermediate rinsing, final rinsing
• • 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
  • 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
  • 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
  • A47L2401/20—Time, e.g. elapsed operating time
• • 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
• • 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
  • A47L2601/02—Pressurised cleaning liquid delivered by a pump

Definitions

• the present invention refers to a dishwashing machine and its washing cycle.
• the known dishwasher machines perform on the crockery a cleaning action consisting in mechanical, chemical and thermal operations performed jointly or separately.
• the mechanical action is obtained with washing liquid jets that hit the crockery, the chemical action is due to detergents and washing additives and the thermal action is based on different temperatures reached by the washing liquid.
• all modern dishwashing machines comprise a programming device that controls the above programs or washing cycle, and through which the user can select the desired cycle among others.
• all the dishwashers include a so-called economic or eco wash program, normally chosen to wash crockery lightly dirty or with easy removable dirty or when there's only a partial load of the dishwasher itself or when the load consists only of plates and glasses without pots.
• the economic washing program usually, comprises a cold pre-washing step, which is performed with not heated washing liquid, a hot washing step which is done with heated washing liquid, a cold rinse step finally followed by a hot rinse step.
• the washing liquid for steps that require a hot washing liquid, is heated in a lower washtub usually provided in the dishwasher.
• the known economic cycles like the above, have a drawback due to the cold rinse step between the hot washing and the hot rinse step.
• the washtub heated from the hot wash, cools for the cold rinse step and must be then re-heated for the hot rinse step.
• the cycle comprising the interposition of a rinsing cold step between the hot washing step and hot rinse step comes to be expensive in energy terms because the cold rinse step produces to the washtub a high heat loss and in this way a low energy a overall efficiency of the machine relatively low.
• the technical object of the present invention is to propose a dishwasher machine and an economic washing cycle free from the above drawbacks.
• the purpose of the present invention is to propose a dishwashing machine provided with an economic washing cycle less wasteful in terms of energy than the other known solutions.
• the technical object and the specified aims are substantially achieved by a dishwashing machine and a respective washing cycle according to the claim 1 .
• the cycle 1 is programmed to be executed in a dishwashing machine, or simply dishwasher, of a type substantially known not here illustrated, and described only for the essential parts to understanding of the present invention.
• the dishwasher is connected to a water supply from which it receives water that is , substantially , a washing liquid to which are optionally added washing agents .
• the dishwashing machine comprises, in summary, a washtub, the rotating sprayer , an operatively active pump between the washtub and the rotating sprayer, a filtering system in the washtub, a heater of the washing liquid.
• the washing liquid heater is used to heat the washing liquid in the washtub.
• the dishwasher comprises a programming device configured for the selection and control of at least of the wash cycle 1 which is advantageously stored in programming device.
• the washing cycle 1 comprises a cold pre-washing step PF, a washing step L and a hot rinse step RC.
• the washing step comprises a hot washing step LC .
• the step washing L comprises a cold wash (with water at room temperature) step LF1 .
• the cold wash step LF1 precedes said hot washing step LC.
• hot rinse step RC immediately follows said hot washing step LC.
• the washtub does not waste too much heat between RC step and LC step, more specifically, as will be better explained below, the hot rinse step RC and the hot washing step LC are only separated by a unloading step and a loading step of the washing liquid used for rinse, during which, suitably, the washtub practically does not cool down or however it does it in a limited way.
• cold pre-washing step PF is meant a step in which the washing liquid is not heated through an electrical resistance of the dishwasher.
• hot washing step LC is meant a step in which the washing liquid is heated with said resistance (similar thing can be repeated for the hot rinse RC).
• the cold pre-washing step PF has a duration comprised between 10 and 30 minutes.
• the hot washing step LC has a duration comprised between 50 and 100 minutes.
• the hot rinse step RC has a duration comprised between 10 and 30 minutes.
• hot washing step LC comprises a heating step R1 of the washing liquid to a temperature comprised between 45°centigrade and 55°centigrade .
• the hot washing step LC takes place at least, partly with the washing liquid at a temperature comprised between 45 ° centigrade and 55 "centigrade.
• the hot rinse step RC comprises a heating step R2 of washing liquid to a temperature comprised between 45 3 ⁇ 4entigrade and 65 3 ⁇ 4entigrade.
• the hot rinse step RC takes place at least partly, with the washing liquid at a temperature comprised between 453 ⁇ 4entigrade and 6 5° centigrade.
• the wash cycle 1 comprises a first loading step C1 of a first washing liquid.
• the washing liquid for example water from supply network, is fed into the washtub.
• the cold pre-washing step PF provides for a first cold pre- washing step PF1 with the first washing liquid.
• the cycle 1 comprises a unloading step S1 of the first washing liquid immediately followed by a loading step C2 of a second washing liquid that last for example, overall 2 minutes.
• the second washing liquid is water that can be loaded either from the water supply or the first washing liquid suitably filtered .
• the washing step L comprises a washing step LF1 with the second washing liquid at room temperature.
• the washing step LF1 has a duration comprises 5 and 10 minutes.
• the cold washing step LF1 with the second washing liquid lasts preferably 5 minutes.
• the heating step R1 lasts about 15 minutes.
• the hot washing step LC comprises a washing step LC1 with the washing liquid to the temperature reached at the end of the heating step R1 (step LC1 is, therefore, a hot maintenance step).
• the hot washing step LC lasts preferably further 60 minutes after the heating step R1 during which the temperature of the washing liquid is maintained at about 533 ⁇ 4entigrade.
• washing step LC1 lasts, in the illustrated example, 60 minutes.
• a detergent DET or first washing agent is added to the washing liquid.
• the cycle 1 comprises an unloading step S2 of the second washing liquid and a loading step C3 of a third washing liquid before the said hot rinse step RC.
• Such liquids are generally always water from the network.
• the heating step R2 lasts for example 13 minutes, and brings, preferably, the washing liquid temperature to about 55 °C.
• the hot rinse step RC lasts further, for example , half a minute , during which the temperature is maintained at about 55 °C .
• the hot rinse step RC comprises a hot rinse step RC1 that follows the heating step R2 that lasts, in the illustrated example, half a minute.
• the cycle 1 comprises a unloading step S3 not described in detail.
• the cycle 1 comprises a step of adding of a second washing agent, for example, rinsing aid, during hot rinse step RC.
• a second washing agent for example, rinsing aid
• the sparkling aid is introduced in the cycle 1 during the heating step R2 (typically to the achievement of a predetermined temperature or after a predetermined time from the start of the heating step R2 ).
• the washing liquid used in the washtub for the washing cycle 1 is present in one amount comprised between 2.5 liters and 4.5 liters.
• the washing program described allows a significant power savings compared to the known economic cycles.

Landscapes

• Washing And Drying Of Tableware (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47633311

Family Applications (1)

Country Status (2)

Cited By (1)

Families Citing this family (1)

Citations (7)

• 2012
  • 2012-12-28 IT IT000094A patent/ITPR20120094A1/it unknown
• 2013
  • 2013-12-27 WO PCT/IB2013/061362 patent/WO2014102739A1/en active Application Filing

Patent Citations (7)

Also Published As

Similar Documents

Legal Events