EP0981291A2 - Method and metering device for operating a household dishwasher - Google Patents
Method and metering device for operating a household dishwasherInfo
- Publication number
- EP0981291A2 EP0981291A2 EP98934744A EP98934744A EP0981291A2 EP 0981291 A2 EP0981291 A2 EP 0981291A2 EP 98934744 A EP98934744 A EP 98934744A EP 98934744 A EP98934744 A EP 98934744A EP 0981291 A2 EP0981291 A2 EP 0981291A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- dosing
- rinse aid
- chamber
- volume
- metering
- 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
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
- A47L15/42—Details
- A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
- A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of 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
- 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
- A47L15/0055—Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
Definitions
- the invention relates to a method for operating a household dishwasher according to the preamble of claim 1 and a metering device suitable for carrying out this method.
- a small dosing chamber is provided, which is also called a scooping chamber, because it fills from a larger storage vessel by pivoting the device through 90 °.
- the dosing device is installed in the loading door of the machine, with the result that when the door is opened, ie after the program has run, the dosing chamber is filled.
- a valve pin which closes an outlet opening of the metering chamber, is actuated by an actuator, e.g. B. a solenoid, so that the entire content of the Dosing chamber can leak into the wash cabinet.
- the volume of the metering chamber and thus the metered amount is determined in these devices by means of a displacer, which can be more or less protrude into the Dosierka mer.
- the invention is based on the object, based on the circumstances described, to further improve the washing results or, with equally good results, to reduce water consumption.
- the method can be developed in two variants, the practical use of which depends on the control technology used in the dishwasher.
- the rinse aid that is entered within a certain program section is composed of a selectable number of quanta of equal size that are metered in individual successive metering processes.
- a metering chamber that is unchanged in terms of volume, the valve arrangement of which closes the inlet and opens the outlet when actuated, runs empty during each metering process and thus delivers the same quantity each time.
- Such a multiple dosing device is suitable for the modern electronically controlled dishwashers, in which it is easily possible to determine the number of control pulses in the individual program sections as desired, and possibly also take other parameters such as the type and amount of the dishwasher, water hardness, etc. into account. Suitable sensors can be provided for the specifications.
- a metering device which is characterized in that the device for entering a rinse aid has a storage container, an intermediate store and a metering chamber, that a line connection is provided from the intermediate store to the metering chamber and the volume of the intermediate store Is several times the dosing chamber volume and that a refill connection is provided from the storage container to the intermediate storage.
- the buffer In practice, the buffer must be sized so that it can hold the maximum number of dosing guant required in the entire washing program.
- such a multiple dosing device as the known dosing devices according to the scoop chamber principle has the basic advantage that if the valve pin does not leak, the entire rinse aid supply of, for example, 100 or 200 ml can leak, but at most the few milliliters of the buffer. Large quantities of rinse aid in a dishwasher have the serious consequence that foam is produced in uncontrolled quantities, which comes out of the machine and causes damage.
- the intermediate store is expediently designed as a scooping chamber which, as is known per se, is filled by pivoting the metering device, e.g. by opening the loading door when the dosing device is installed in it.
- a dosing device which has an unchangeable rinse aid dosing chamber is possible in that the volume of the intermediate store can be changed.
- Such a device can be used to add rinse aid only in the last, the so-called rinse cycle, the dosing also taking place in individual quanta, but the total amount is ultimately determined by the volume of the buffer store.
- the timer gives e.g. always 6 control pulses. However, it may be the case that the buffer is empty after the third control pulse and the metering valve then works three times empty.
- the invention is to be seen under the stipulation that a multiple dosing device of the type described above in a combined dosing device is integrated.
- Combined dosing devices were created under the constraint of rationally manufacturing and assembling and are included in almost all household dishwashers on the market. They include a device for entering a cleaning agent, which is usually used in powder form, and a device for entering a liquid rinse aid into the wash cabinet, it being known to operate both devices with the same actuator, in particular with a lifting magnet or one Bimetal actuator. A distinction is made by the type of electrical signal or in another way whether the detergent dispenser or the rinse aid dispenser should be actuated.
- the known combined dosing devices are designed so that first the detergent dispenser and then the rinse aid dosing device is actuated. This corresponds to the natural program flow and is an important prerequisite for the conversion of the known single-dose devices into multiple-dose devices proposed by the invention. Once the detergent dispenser is triggered, there is nothing standing in the way of triggering the rinse aid dispenser several times.
- An intermediate storage 3 which is designed as a scooping chamber, is attached to a storage container 1, which has a filling opening with a lid 2.
- the partition has an opening 4 at the top. If the entire device, which is installed in this position in a closed loading door, is swiveled 90 ° to the left when the door is opened, the buffer store 3 fills up.
- the intermediate store is connected via a line 5 to a metering chamber 6, in which a valve tappet 7 moves upward from its illustrated rest position upon a control pulse. The contents of the dosing chamber run out.
- the required ventilation lines are not shown for the sake of simplicity.
- the volume of the metering chamber 7 can be changed by connecting a cylinder to the metering chamber in which an actuating piston 8 can be moved.
- the volume of the intermediate store> 3 can also be adjustable by means of an immersion body 9 which, depending on the setting, protrudes more or less far into the intermediate store.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19720820A DE19720820A1 (en) | 1997-05-16 | 1997-05-16 | Method and dosing device for operating a household dishwasher |
DE19720820 | 1997-05-16 | ||
PCT/DE1998/001371 WO1998051205A2 (en) | 1997-05-16 | 1998-05-16 | Method and metering device for operating a household dishwasher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0981291A2 true EP0981291A2 (en) | 2000-03-01 |
EP0981291B1 EP0981291B1 (en) | 2001-08-22 |
Family
ID=7829826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98934744A Expired - Lifetime EP0981291B1 (en) | 1997-05-16 | 1998-05-16 | Metering device for a household dishwasher |
Country Status (4)
Country | Link |
---|---|
US (1) | US6338351B1 (en) |
EP (1) | EP0981291B1 (en) |
DE (2) | DE19720820A1 (en) |
WO (1) | WO1998051205A2 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6799085B1 (en) | 2000-06-08 | 2004-09-28 | Beverage Works, Inc. | Appliance supply distribution, dispensing and use system method |
US7754025B1 (en) * | 2000-06-08 | 2010-07-13 | Beverage Works, Inc. | Dishwasher having a door supply housing which holds dish washing supply for multiple wash cycles |
US7083071B1 (en) | 2000-06-08 | 2006-08-01 | Beverage Works, Inc. | Drink supply canister for beverage dispensing apparatus |
DE10045151C2 (en) * | 2000-09-13 | 2002-09-26 | Whirlpool Co | Process for the delivery of rinse aid in a dishwasher |
DE10049489A1 (en) * | 2000-10-06 | 2002-04-11 | Aeg Hausgeraete Gmbh | dishwasher |
ITPN20020001U1 (en) * | 2002-01-16 | 2003-07-16 | Electrolux Home Products Corpo | MULTIDOSE DISPENSER OF LIQUID ADDITIVES FOR WASHING MACHINES. |
US7464718B2 (en) * | 2003-06-23 | 2008-12-16 | General Electric Company | Dishwasher liquid delivery systems |
US8056747B2 (en) * | 2007-10-12 | 2011-11-15 | General Electric Company | Removable tank for laundry bulk dispenser system |
US7802335B2 (en) * | 2007-10-12 | 2010-09-28 | General Electric Company | Bulk dispense user adjustable controls |
US8056374B2 (en) * | 2007-10-12 | 2011-11-15 | General Electric Company | Multiple compartments wash additives auto-dispenser in washer or dryer pedestal |
KR100985384B1 (en) * | 2008-06-27 | 2010-10-05 | 주식회사 경동네트웍 | Method for controlling a hot water temperature in using low flux in hot water supply system |
IT201600084226A1 (en) * | 2016-08-10 | 2018-02-10 | Bitron Spa | Dosing device for dispensing a washing agent in a washing machine, in particular a dishwasher machine. |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2699886A (en) * | 1953-03-23 | 1955-01-18 | Jr Mark S James | Liquid dispensing device |
US2867224A (en) | 1955-12-22 | 1959-01-06 | Gen Electric | Washing apparatus with water conditioning dispenser |
US3013568A (en) * | 1956-10-29 | 1961-12-19 | Waste King Corp | Dishwasher with dispenser for water conditioning liquid |
BE626844A (en) | 1962-02-22 | |||
US3220607A (en) * | 1964-05-13 | 1965-11-30 | Gen Electric | Conditioning material dispenser for washing machines |
DE6603555U (en) * | 1966-09-01 | 1969-10-09 | Siemens-Electrogeraete Gmbh | DOSING DEVICE FOR LIQUID DETERGENT OR DISH DETERGENT |
GB1514797A (en) * | 1974-09-24 | 1978-06-21 | Licentia Gmbh | Dosing device |
DE7503703U (en) * | 1975-02-07 | 1975-09-18 | Aweco, Apparate- und Gerätebau, GmbH & Co KG, 7995 Neukirch | Dosing device for liquids |
FR2546195B1 (en) * | 1983-05-20 | 1986-01-17 | Esswein Sa | LID LINEN WASHING MACHINE COMPRISING A RESERVE OF LIQUID LESSIVE PRODUCT |
DE3442194A1 (en) * | 1984-11-17 | 1986-05-28 | Miele & Cie GmbH & Co, 4830 Gütersloh | Dish-washer having a metering device |
IT1187895B (en) * | 1986-02-06 | 1987-12-23 | Eltek Spa | LONG-LIFE DISPENSER DEVICE OF POWDER DETERGENTS AND LIQUID POLISHING SUBSTANCES FOR WASHING MACHINES PARTICULARLY DISHWASHER |
DE3939402A1 (en) * | 1989-11-29 | 1991-06-06 | Bauknecht Hausgeraete | DISPENSING DEVICE FOR LIQUIDS ARRANGED IN THE DOOR OF A DISHWASHER |
DE4403191A1 (en) * | 1994-02-02 | 1995-08-03 | Gaeng Lutz Achim Prof Dr Ing | Household washing machine for dispensing detergent automatically |
-
1997
- 1997-05-16 DE DE19720820A patent/DE19720820A1/en not_active Withdrawn
-
1998
- 1998-05-16 US US09/423,835 patent/US6338351B1/en not_active Expired - Lifetime
- 1998-05-16 EP EP98934744A patent/EP0981291B1/en not_active Expired - Lifetime
- 1998-05-16 DE DE59801259T patent/DE59801259D1/en not_active Expired - Fee Related
- 1998-05-16 WO PCT/DE1998/001371 patent/WO1998051205A2/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9851205A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998051205A2 (en) | 1998-11-19 |
DE59801259D1 (en) | 2001-09-27 |
US6338351B1 (en) | 2002-01-15 |
WO1998051205A3 (en) | 1999-02-04 |
EP0981291B1 (en) | 2001-08-22 |
DE19720820A1 (en) | 1998-11-19 |
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