EP0931191A1 - Dosierung von waschmittelpasten - Google Patents
Dosierung von waschmittelpastenInfo
- Publication number
- EP0931191A1 EP0931191A1 EP97912090A EP97912090A EP0931191A1 EP 0931191 A1 EP0931191 A1 EP 0931191A1 EP 97912090 A EP97912090 A EP 97912090A EP 97912090 A EP97912090 A EP 97912090A EP 0931191 A1 EP0931191 A1 EP 0931191A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- solvent
- injector
- paste
- shut
- opening
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
Definitions
- the invention relates to a device and a method for metering pasty substances and mixing them with a solvent by means of an injector with an integrated shut-off device, the metered amount being determined on the basis of a conductivity measurement.
- Liquid to pasty detergents are known in large numbers. These are generally tailored to household needs, which means that they should be sufficiently liquid and easy to pour and dose. Since they should also be stable in storage within a relatively wide temperature range, the use of organic solvents and / or hydrotropic additives is usually not possible. However, these additives are wash-inactive, comparatively complex and additionally require packaging volume or transport and storage capacity. In particular, a content of flammable solvents, which require additional safety precautions due to the comparatively high throughput of detergents in laundry plants, is a problem. Detergent concentrates of the type mentioned are therefore not or only of very limited use for laundries.
- Powder detergents are therefore mainly used in laundry companies. Since the exact dosing of such agents is problematic or labor-intensive, particularly in large companies with extensive automation, the agents are usually stored and dosed in pre-dissolved form as base liquors, i.e. an aqueous concentrate is prepared, which is then fed to the individual consumption points.
- the detergents usually used in laundry companies contain comparatively high proportions of washing alkalis, which are only soluble in cold water to a limited extent and moreover lead to salting-out effects. They cause phase separation, with the result that the organic components, in particular the nonionic surfactants and soaps, separate and cream.
- a detergent that meets these requirements is proposed in EP 0 295 525. It is a pasty detergent that places special demands on handling for dosing and mixing with water as a solvent.
- an injector operating on the principle of the water jet pump with an integrated shut-off valve is proposed in this publication.
- a measuring arrangement on the basis of conductivity measurements is disclosed as the detection device for the metered amount of paste.
- a chemical dispenser as a metering device for chemical solutions of unknown or variable concentration in connection with a detection device based on conductivity measurement and a corresponding method is also described in EP 0229 038.
- shut-off device integrated in the injector present difficulties. They either provide for the water supply to the paste supply to be blocked or the paste supply to be blocked.
- a shut-off option that corresponds to the requirements of practice and that enables targeted metering and mixing is not yet known.
- the technical problem on which the invention is based is to further develop a known device or a method for its operation in such a way that the supply of paste-like substances and their solvents can be shut off separately in such a way that a metering of the mixture constituents corresponding to the mixing ratios is accurate, is possible in a simple and reproducible manner and with little effort.
- shut-off device is a double control piston for the separate closing of an opening between the paste supply and an injector suction chamber and an opening between the solvent supply and an injector prechamber
- a previously described method which is being developed further there that by opening a shut-off device in a supply line for the pressurized solvent moves a double control piston arrangement against an opposing force and thereby first a connection between a paste supply line and the injector suction chamber and then a connection between the solvent supply line and an injector prechamber releases, paste being sucked into the injector working according to the principle of a water jet pump and mixed with the relaxing solvent and the mixture is injected into a measuring section in which ei ne conductivity measuring arrangement determines the amount of the paste dissolved in the mixture and, after reaching the desired dosing amount, the shut-off device is closed, after which the previous opening operation takes place in reverse order to shut off.
- the metering device has the advantage that, by isolating the paste and solvent feeds separately, targeted metering, taking the mixing ratios exactly into account, is possible with simple means. It is particularly advantageous if the paste supply and then the solvent supply can be released first when opening and these steps take place in the reverse order when shut off. This ensures that constant mixing ratios can be achieved over the entire metering period.
- the control device proposed in a special embodiment allows the sequences of the individual circuit steps and their control to be controlled and monitored in an effective manner in a simple manner.
- the proposed method advantageously offers the possibilities of carrying out metering and mixing by means of an injector and metering quantity detection on the basis of the conductivity measurement in a form which uses the possibilities of these units in an optimal form and combines them with one another in a simple manner and thereby advantageously implements the objective.
- the illustration of an exemplary embodiment of the metering device 1 shows the feed line 8 for the solvent, which is normally water, coming from the right. This is at increased pressure and is separated from the metering device by the shut-off element 9.
- a 2/2 shut-off valve or tap proves to be particularly advantageous for this purpose, in which the switch is only fully open and completely closed between the switching positions. If the shut-off element 9 is open, the pressurized water is against the control piston 6, which is arranged on the piston plate 15.
- the piston plate 15 is arranged on a guide plate which is axially movable in the cylindrical space 10.
- the room 10 is designed to be watertight overall.
- a spring 16, against which the guide plate can be moved axially, is arranged below the guide plate.
- the water under pressure laterally under the injector is present on the piston plate 15 next to the arrangement of the piston 6 and presses it downwards.
- the spring 16 is designed so that it is deflected at a water pressure of 2.5 bar.
- the piston plate 15 moves downward, it takes the pistons 5 and 6 arranged on it with it.
- the piston 5 closes the connection between the paste feed 7 and the injector suction chamber 4, while the piston 6 blocks the connection between the feed line 8 and the injector prechamber 3.
- the length of the distances and the length of the pistons 5 and 6 is selected so that when the double control piston arrangement 5, 6, 15 drops, the connection from the paste feed 7 to the injector suction chamber 4 is first released.
- the connection from the supply line 8, that is to say the water under pressure, into the injector prechamber 3 is then also released by the piston 6.
- the water is immediately at full operating pressure, in the exemplary embodiment below 2.5 bar, and presses through the narrow injector nozzle 2.
- Injector 2 is through the cylinder space for piston 5 and onto the injector suction chamber 4 and the thus coaxial measuring section 13 directed.
- the relaxing water sucks paste from the paste feed 7, dissolves the paste and mixes with it.
- This mixture is injected into the measuring section 13, in which its electrical conductivity is measured by the measuring electrodes 14, which are spaced apart in the direction of flow.
- This measuring arrangement allows the quantity of paste present in the mixture to be recorded precisely, so that quantities unknown or varying in paste can also be recorded in terms of their concentration.
- An integration device in a control device determines the amount of the total metered paste and gives the command to close the system when the target metered amount is reached. The further transport of the mixture of the paste in aqueous solution into the product line 17 is then interrupted.
- the guide plate with the piston plate 15 arranged thereon and the pistons 5 and 6 can only be moved upward after the opening to the injector prechamber 3 has been closed if this is still in space 10 Existing water can be removed via the bypass 12.
- the amount of water required by the bypass after the connection to the injector prechamber 3 has been closed is so small that it does not significantly influence the mixing ratio.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Detergent Compositions (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Cosmetics (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19641742A DE19641742A1 (de) | 1996-10-10 | 1996-10-10 | Dosierung von Waschmittelpasten |
DE19641742 | 1996-10-10 | ||
PCT/EP1997/005400 WO1998015682A1 (de) | 1996-10-10 | 1997-10-01 | Dosierung von waschmittelpasten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0931191A1 true EP0931191A1 (de) | 1999-07-28 |
EP0931191B1 EP0931191B1 (de) | 2001-04-04 |
Family
ID=7808341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97912090A Expired - Lifetime EP0931191B1 (de) | 1996-10-10 | 1997-10-01 | Dosierung von waschmittelpasten |
Country Status (10)
Country | Link |
---|---|
US (1) | US6241378B1 (de) |
EP (1) | EP0931191B1 (de) |
AT (1) | ATE200316T1 (de) |
DE (2) | DE19641742A1 (de) |
DK (1) | DK0931191T3 (de) |
ES (1) | ES2155676T3 (de) |
GR (1) | GR3035779T3 (de) |
NO (1) | NO991682L (de) |
PT (1) | PT931191E (de) |
WO (1) | WO1998015682A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19852164A1 (de) * | 1998-11-12 | 2000-05-25 | Lang Apparatebau Gmbh | Verfahren und Vorrichtung zur Erfassung der Menge eines in einem Lösungsstrom gelösten Produkts |
NO312921B1 (no) * | 1999-07-05 | 2002-07-15 | Sinvent As | Multitest-sammenstilling for evaluering, detektering og overvåkning av prosesser ved forhöyet trykk |
DE10159162B4 (de) * | 2001-12-01 | 2009-12-31 | Ecolab Inc., St. Paul | Einrichtung zum Dosieren eines pastösen Waschmittels |
DE10356353A1 (de) * | 2003-11-28 | 2005-06-30 | Meiko Maschinenbau Gmbh & Co. Kg | Dosiervorrichtung für Geschirrspülautomaten |
KR101614165B1 (ko) * | 2010-01-12 | 2016-04-20 | 동부대우전자 주식회사 | 액체세제 공급장치 |
US10655264B2 (en) * | 2015-08-04 | 2020-05-19 | Whirlpool Corporation | Laundry treating appliance with internal housing |
DE102017205674A1 (de) | 2017-04-04 | 2018-10-04 | i-clean Technologies GmbH | Verfahren und Vorrichtung zum Anlösen eines Behandlungsmittels |
CN108193442B (zh) * | 2018-02-07 | 2021-01-15 | 南京中竞科电子科技有限公司 | 一种洗涤剂投放装置及洗衣机 |
CN114870667B (zh) * | 2022-07-08 | 2022-10-21 | 广州市华晟健康产业有限公司 | 一种洗碗机漂洗剂制备用均匀混合设备 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA943721A (en) * | 1970-02-20 | 1974-03-19 | Krauss-Maffei Aktiengesellschaft | Device for feeding flowable material to a cavity |
DE2348609C3 (de) * | 1973-09-27 | 1980-10-23 | Bayer Ag, 5090 Leverkusen | Vorrichtung zum Herstellen von Schaumoder Homogenstoffen aus flüssigen Reaktionskomponenten |
FR2254015A1 (en) * | 1973-12-07 | 1975-07-04 | Filtro Sa | Liquid seal for water treatment dosing valve - partic. for adjusting pH of effluent from electroplating |
GB2168726A (en) | 1984-12-21 | 1986-06-25 | Unilever Plc | Supplying water and liquid additive to a washing machine |
US4858449A (en) * | 1986-01-09 | 1989-08-22 | Ecolab Inc. | Chemical solution dispenser apparatus and method of using |
DE3719906A1 (de) | 1987-06-15 | 1988-12-29 | Henkel Kgaa | Maschinelles waschverfahren |
DE3826110A1 (de) * | 1988-08-01 | 1990-02-15 | Henkel Kgaa | Verfahren zum dosieren pastenfoermiger waschmittel |
-
1996
- 1996-10-10 DE DE19641742A patent/DE19641742A1/de not_active Withdrawn
-
1997
- 1997-10-01 US US09/284,266 patent/US6241378B1/en not_active Expired - Lifetime
- 1997-10-01 ES ES97912090T patent/ES2155676T3/es not_active Expired - Lifetime
- 1997-10-01 PT PT97912090T patent/PT931191E/pt unknown
- 1997-10-01 AT AT97912090T patent/ATE200316T1/de active
- 1997-10-01 EP EP97912090A patent/EP0931191B1/de not_active Expired - Lifetime
- 1997-10-01 WO PCT/EP1997/005400 patent/WO1998015682A1/de active IP Right Grant
- 1997-10-01 DK DK97912090T patent/DK0931191T3/da active
- 1997-10-01 DE DE59703308T patent/DE59703308D1/de not_active Expired - Lifetime
-
1999
- 1999-04-09 NO NO991682A patent/NO991682L/no not_active Application Discontinuation
-
2001
- 2001-04-23 GR GR20010400628T patent/GR3035779T3/el not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9815682A1 * |
Also Published As
Publication number | Publication date |
---|---|
GR3035779T3 (en) | 2001-07-31 |
EP0931191B1 (de) | 2001-04-04 |
PT931191E (pt) | 2001-09-28 |
DE59703308D1 (de) | 2001-05-10 |
ES2155676T3 (es) | 2001-05-16 |
US6241378B1 (en) | 2001-06-05 |
DE19641742A1 (de) | 1998-04-23 |
ATE200316T1 (de) | 2001-04-15 |
NO991682D0 (no) | 1999-04-09 |
WO1998015682A1 (de) | 1998-04-16 |
DK0931191T3 (da) | 2001-06-05 |
NO991682L (no) | 1999-04-09 |
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