WO2010038189A1 - A device for dispensing at least one washing agent in a dishwashing machine - Google Patents
A device for dispensing at least one washing agent in a dishwashing machine Download PDFInfo
- Publication number
- WO2010038189A1 WO2010038189A1 PCT/IB2009/054250 IB2009054250W WO2010038189A1 WO 2010038189 A1 WO2010038189 A1 WO 2010038189A1 IB 2009054250 W IB2009054250 W IB 2009054250W WO 2010038189 A1 WO2010038189 A1 WO 2010038189A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conducting member
- earth
- dispensing device
- respect
- washing
- Prior art date
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
- A47L15/4409—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants by tipping containers or opening their lids, e.g. with the help of a programmer
-
- 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
- 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
-
- 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
- A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
- A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
- A47L15/22—Rotary spraying 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
- 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
- A47L2401/30—Variation of electrical, magnetical or optical quantities
-
- 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
- A47L2501/26—Indication or alarm to the controlling device or to the user
Definitions
- the present invention relates to a device for dispensing at least one washing agent in a dishwashing machine having a washing chamber which is closed by a door and in which there is mounted at least one spraying rotor for spraying a washing liquid.
- the invention relates to a dispensing device comprising a support body adapted to be mounted on that side of the door which is towards the washing chamber, in a position such that in the operation said body is periodically flushed, at least in part, by a flow of washing liquid emitted by said at least one rotor.
- One object of the present invention is to provide a dispensing device of the type specified above, which by simple and inexpensive means allows the modalities of operation of the abovementioned at least one spraying rotor to be detected.
- a dispensing device of the type specified above, characterized in that in the support body there is incorporated an electrically conducting member whose electric capacitance with respect to earth is variable by the effect of the flow of washing liquid which periodically impinges onto said body; detection circuit means being connected to said conducting member and being predisposed for detecting the variations of the electric capacitance of the conducting member with respect to earth and for correlating in a predetermined manner said variations with the operation of said at least one spraying rotor.
- the support body of the dispensing device there is defined at least one receptacle intended to receive an amount of a washing agent, and to which there is attached a further electrically conducting member which is likewise incorporated in the support body and whose electrical capacitance with respect to earth is variable as a function of the quantity or level of the washing agent in said receptacle, and in which detection circuit means are coupled to said further conducting member and are predisposed to detect variations of the electrical capacitance thereof with respect to earth.
- Figure 1 is a near-front perspective view of a dispensing device according to the present invention.
- Figure 2 is a diagrammatic side view of the dispensing device shown in Figure 1 ;
- Figure 3 is a block-type circuit diagram of an embodiment of the electrical/electronic part of a dispensing device in accordance with the present invention.
- the number 1 is a general reference for a device according to the invention for dispensing a washing agent in a dishwashing machine.
- the dishwashing machine M comprises a washing chamber 2 which is closed on one side by a door 3.
- a spraying rotor of a type also known per se.
- Bl, B2 and B3 are the respective jets of washing liquid emitted by these rotors.
- the dispensing device or dispenser 1 is mounted on that side of the door 3 which is towards the washing chamber 2, in a position such that, in the operation said body is periodically flushed, at least in part, by the flows of washing liquid Bl, B2 and B3 emitted by said rotors.
- the dispensing device 1 comprises a supporting body 4 in the form of for example a plastic moulding.
- the supporting body 4 contains two separate receptacles 5 and 6 shown in long and short dashes.
- the receptacle 5 is in the shape of a tub, for example, and is designed to hold an amount or dose of a washing agent such as a detergent, e.g. in liquid or powder form.
- a washing agent such as a detergent
- This receptacle is normally closed by a movable lid 7 which can be made to open in a manner known per se by means of an associated electrically driven actuator controlled by a control unit which controls the operation of the dishwashing machine.
- the receptacle 6 is designed to contain an amount of another washing agent, such as rinse aid. This amount is usually equal to a plurality of doses, deliverable in succession, in the course of successive wash cycles.
- the supporting body 4 of the dispensing device incorporates an electrically conducting member or electrode 10, e.g. in the form of an elongate metal strip, or possibly a conducting wire.
- the electrical capacitance of the conducting member 10 with respect to earth is subject to variation during operation due to the flow of washing liquid periodically directed at the dispensing device 1 by the or each spraying rotor.
- the conducting members 10, 11 and 12 may conveniently be incorporated in the supporting body 4 of the dispensing device during its moulding.
- conducting members are connected to detection and processing circuit devices which will be described later with reference to the conducting member 10, it being understood that the conducting members 11 and 12 are connected to the same or similar detection and analysis circuit devices.
- the dispensing device 1 comprises a detection and processing circuit device denoted as a whole by the number 20, comprising for example a microprocessor 21.
- This detection and processing circuit device may conveniently be mounted directly on the body of the dispensing device 1, and may be interfaced with the unit ECU which controls the operation of the dishwasher by means of a connection 22.
- the latter may simply be a single- wire serial link.
- the detection and processing circuit device 20 is connected to earth E, or to the neutral conductor of the AC power supply line, for example by connecting it (directly or via unintended impedances) to the earth conductor or conductors of the dishwashing machine.
- This device 20 is connected to the conducting members 10, 11 and 12 and is designed to detect variations in their respective electrical capacitances with respect to earth E.
- the detection and processing device 20 is designed in particular to correlate the variations of capacitance with respect to earth of the conducting member 10 with the operation of the spraying rotor or rotors.
- the same device 20 is designed to detect variations in the capacitance of the conducting members 11 and 12 with respect to earth E, and to correlate them in predetermined ways with the quantities or levels of washing agents contained in the associated receptacles 5 and 6.
- the detection and processing device 20 comprises an excitation stage 30 suitable for applying high-frequency electrical excitation signals A, B and C to the conducting members or electrodes 10, 11 and 12, respectively, and an acquisition stage 31 for acquiring, for each of said conducting members or electrodes, corresponding respective low-frequency response signals a, b, c, which are influenced by the respective electrical capacitances with respect to earth of said conducting members or electrodes.
- the response signals acquired by the stage 31 are passed to a filter FIR 32, whose output is connected to the input of an up-down counter 33.
- the output of the counter 33 is connected to a unit 34 which runs an analytical algorithm. This receives a feedback signal from the acquisition stage 31 via a feedback unit 35.
- the unit 34 also receives, from a unit 36, the predefined parameter values which define characteristics of the spraying rotor or rotors of the dishwashing machine, and characteristics of the receptacles containing the aforementioned washing agents.
- the unit 34 is connected to an output unit 37 which produces signals indicating the modes of operation of the spraying rotor or rotors, and signals indicating the amounts or levels of washing agents in the respective receptacles. These signals are sent via the link 22 to the control unit ECU of the dishwashing machine.
- Analysis of the response signals obtained from the conducting member or electrode 10 allows the device to discriminate between the following conditions: correct rotation of the spraying rotor or rotors, slow rotation (not correct) of one or more rotors, and one or more rotors not working.
- the response signals obtained by the conducting members or electrodes 11 and 12 allow continuous monitoring of the amount or level of washing agents in the associated receptacles.
Landscapes
- Detergent Compositions (AREA)
- Washing And Drying Of Tableware (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980137693.6A CN102170816B (en) | 2008-09-30 | 2009-09-29 | A device for dispensing at least one washing agent in a dishwashing machine |
US13/121,614 US20110174345A1 (en) | 2008-09-30 | 2009-09-29 | Device for dispensing at least one washing agent in a dishwashing machine |
EP09747919A EP2341812A1 (en) | 2008-09-30 | 2009-09-29 | A device for dispensing at least one washing agent in a dishwashing machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO2008A000711A IT1391200B1 (en) | 2008-09-30 | 2008-09-30 | DEVICE FOR DISTRIBUTING AT LEAST ONE WASHING AGENT IN A DISHWASHER MACHINE |
ITTO2008A000711 | 2008-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010038189A1 true WO2010038189A1 (en) | 2010-04-08 |
Family
ID=40920278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2009/054250 WO2010038189A1 (en) | 2008-09-30 | 2009-09-29 | A device for dispensing at least one washing agent in a dishwashing machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110174345A1 (en) |
EP (1) | EP2341812A1 (en) |
KR (1) | KR20110082538A (en) |
CN (1) | CN102170816B (en) |
IT (1) | IT1391200B1 (en) |
WO (1) | WO2010038189A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120138101A1 (en) * | 2010-12-02 | 2012-06-07 | Electrolux Home Products, Inc. | Detergent dispenser for improved detergent removal |
CN103369998A (en) * | 2011-02-08 | 2013-10-23 | 毕勤股份有限公司 | Integrated device for dispensing washing agents for a washing machine, particularly a dishwashing |
EP2441368A3 (en) * | 2010-10-18 | 2017-04-26 | BSH Hausgeräte GmbH | Dishwasher with at least one rotatable spray arm |
EP2441370A3 (en) * | 2010-10-18 | 2017-04-26 | BSH Hausgeräte GmbH | Dishwasher with at least one spray device |
EP2441369A3 (en) * | 2010-10-18 | 2017-05-03 | BSH Hausgeräte GmbH | Dishwasher with at least one spray device |
WO2017108072A1 (en) * | 2015-12-21 | 2017-06-29 | Electrolux Appliances Aktiebolag | Dishwasher comprising a wash arm arrangement |
ITUA20162704A1 (en) * | 2016-04-19 | 2017-10-19 | Bitron Spa | Sensor device for detecting the presence of an electroconductive substance in a spatial region and its applications. |
WO2024057200A1 (en) * | 2022-09-14 | 2024-03-21 | Eltek S.P.A. | Washing agent dispenser for dishwashers |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9521941B2 (en) * | 2012-08-21 | 2016-12-20 | Premark Feg L.L.C. | Warewash machine chemical sensor and related system and method |
US9970148B2 (en) | 2012-08-28 | 2018-05-15 | Whirlpool Corporation | Household appliance having a physical alteration element |
US9850618B2 (en) | 2012-08-28 | 2017-12-26 | Whirlpool Corporation | Household appliance having a physical alteration element |
US9416482B2 (en) | 2012-08-28 | 2016-08-16 | Whirlpool Corporation | Household appliances and methods of control |
US9271627B2 (en) | 2012-08-28 | 2016-03-01 | Whirlpool Corporation | Household appliance having a physical alteration element |
US9198556B2 (en) * | 2013-01-29 | 2015-12-01 | Whirlpool Corporation | Method of determining a blocked rotating spray arm in a dishwasher |
TR201719293T3 (en) * | 2013-07-08 | 2019-05-21 | Arcelik As | A DISHWASHER INCLUDING A LIQUID / GEL DETERGENT DOSING UNIT AND STORAGE UNIT CLEANING SYSTEM. |
DE102013226637A1 (en) * | 2013-12-19 | 2015-06-25 | Meiko Maschinenbau Gmbh & Co. Kg | Cleaning device and method for cleaning items to be cleaned |
PL230510B1 (en) * | 2016-08-17 | 2018-11-30 | Bitron Poland Spolka Z Ograniczona Odpowiedzialnoscia | Device that doses detergent to a dishwasher |
US11464391B2 (en) | 2017-10-31 | 2022-10-11 | Electrolux Appliances Aktiebolag | Spray arm assembly |
EP3703545A1 (en) | 2017-10-31 | 2020-09-09 | Electrolux Appliances Aktiebolag | Wash arm assembly |
KR102143470B1 (en) * | 2019-04-03 | 2020-08-11 | 두얼메카닉스 주식회사 | Cleanser Supply Apparatus of Dish Washer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4219146A1 (en) * | 1991-06-12 | 1992-12-17 | Fisher & Paykel | Dishwasher - has moving wall at washing-up liq. container to vary capacity according to the load |
DE102005025391A1 (en) * | 2005-05-31 | 2006-12-07 | Aweco Appliance Systems Gmbh & Co. Kg | A method for recirculating the wash liquor in a domestic dish or clothes washing machine has a liquid collector by which the liquid is put into contact with a wash product tablet to ensure full usage |
WO2007081252A1 (en) * | 2006-01-13 | 2007-07-19 | Aktiebolaget Electrolux | Dispenser for treatment agents in a washing machine |
EP1897482A1 (en) | 2006-09-08 | 2008-03-12 | Whirlpool Corporation | Dishwashing machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020088502A1 (en) * | 2000-10-04 | 2002-07-11 | Van Rompuy Tanya Cecile Corneel | Smart dosing device |
ITTO20030117U1 (en) * | 2003-07-21 | 2005-01-22 | Elbi Int Spa | POWDER DETERGENT DISPENSER DEVICE FOR A DISHWASHER MACHINE. |
CN1600262A (en) * | 2003-09-27 | 2005-03-30 | 乐金电子(天津)电器有限公司 | Mechanism for opening and closing door of dishwasher |
DE10360554A1 (en) * | 2003-12-22 | 2005-07-14 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher with a system for level detection |
-
2008
- 2008-09-30 IT ITTO2008A000711A patent/IT1391200B1/en active
-
2009
- 2009-09-29 EP EP09747919A patent/EP2341812A1/en not_active Withdrawn
- 2009-09-29 CN CN200980137693.6A patent/CN102170816B/en not_active Expired - Fee Related
- 2009-09-29 KR KR1020117009947A patent/KR20110082538A/en not_active IP Right Cessation
- 2009-09-29 US US13/121,614 patent/US20110174345A1/en not_active Abandoned
- 2009-09-29 WO PCT/IB2009/054250 patent/WO2010038189A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4219146A1 (en) * | 1991-06-12 | 1992-12-17 | Fisher & Paykel | Dishwasher - has moving wall at washing-up liq. container to vary capacity according to the load |
DE102005025391A1 (en) * | 2005-05-31 | 2006-12-07 | Aweco Appliance Systems Gmbh & Co. Kg | A method for recirculating the wash liquor in a domestic dish or clothes washing machine has a liquid collector by which the liquid is put into contact with a wash product tablet to ensure full usage |
WO2007081252A1 (en) * | 2006-01-13 | 2007-07-19 | Aktiebolaget Electrolux | Dispenser for treatment agents in a washing machine |
EP1897482A1 (en) | 2006-09-08 | 2008-03-12 | Whirlpool Corporation | Dishwashing machine |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2441368A3 (en) * | 2010-10-18 | 2017-04-26 | BSH Hausgeräte GmbH | Dishwasher with at least one rotatable spray arm |
EP2441370A3 (en) * | 2010-10-18 | 2017-04-26 | BSH Hausgeräte GmbH | Dishwasher with at least one spray device |
EP2441369A3 (en) * | 2010-10-18 | 2017-05-03 | BSH Hausgeräte GmbH | Dishwasher with at least one spray device |
US20120138101A1 (en) * | 2010-12-02 | 2012-06-07 | Electrolux Home Products, Inc. | Detergent dispenser for improved detergent removal |
US8608866B2 (en) | 2010-12-02 | 2013-12-17 | Electrolux Home Products, Inc. | Detergent dispenser for improved detergent removal |
CN103369998A (en) * | 2011-02-08 | 2013-10-23 | 毕勤股份有限公司 | Integrated device for dispensing washing agents for a washing machine, particularly a dishwashing |
WO2017108072A1 (en) * | 2015-12-21 | 2017-06-29 | Electrolux Appliances Aktiebolag | Dishwasher comprising a wash arm arrangement |
US11026555B2 (en) | 2015-12-21 | 2021-06-08 | Electrolux Appliances Aktiebolag | Dishwasher comprising a wash arm arrangement |
ITUA20162704A1 (en) * | 2016-04-19 | 2017-10-19 | Bitron Spa | Sensor device for detecting the presence of an electroconductive substance in a spatial region and its applications. |
WO2017182953A3 (en) * | 2016-04-19 | 2017-11-30 | Bitron S.P.A. | A sensor device for detecting the presence of an electrically conductive substance in a space region, and applications thereof |
US10879895B2 (en) | 2016-04-19 | 2020-12-29 | Bitron S.P.A. | Sensor device for detecting the presence of an electrically conductive substance in a space region, and applications thereof |
WO2024057200A1 (en) * | 2022-09-14 | 2024-03-21 | Eltek S.P.A. | Washing agent dispenser for dishwashers |
Also Published As
Publication number | Publication date |
---|---|
IT1391200B1 (en) | 2011-11-18 |
CN102170816A (en) | 2011-08-31 |
CN102170816B (en) | 2014-05-07 |
US20110174345A1 (en) | 2011-07-21 |
KR20110082538A (en) | 2011-07-19 |
EP2341812A1 (en) | 2011-07-13 |
ITTO20080711A1 (en) | 2010-04-01 |
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