EP1526799A2 - Sprühvorrichtung und -verfahren, insbesondere für geschirrspülmaschinen - Google Patents
Sprühvorrichtung und -verfahren, insbesondere für geschirrspülmaschinenInfo
- Publication number
- EP1526799A2 EP1526799A2 EP03761521A EP03761521A EP1526799A2 EP 1526799 A2 EP1526799 A2 EP 1526799A2 EP 03761521 A EP03761521 A EP 03761521A EP 03761521 A EP03761521 A EP 03761521A EP 1526799 A2 EP1526799 A2 EP 1526799A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray
- liquid
- dishwasher
- program
- spraying
- 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
- A47L15/4289—Spray-pressure measuring or regulating arrangements
-
- 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
- A47L15/16—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with rigidly-mounted spraying devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
Definitions
- Spraying device and method in particular for dishwashers
- the present invention relates to a spraying device and a spraying method, which is to be used in particular in dishwashers.
- Known spray devices e.g. for dishwashers, have rotation arms through which spray liquid is pumped and the rotation movement is generated by the return force of the emerging liquid.
- These so-called spray arms are supplied with rinsing liquid via a pump. Since the washing container conventionally has a rectangular outline, the corner regions of the washing container are only insufficiently reached by the spray arms, which essentially follow a circular path. This disadvantage is avoided, for example, by so-called spray floors, which have the disadvantage of being able to spray only point-like areas and thus the items to be cleaned cannot be adequately wetted with the washing liquid at all points.
- the spray device consists of at least one two-end tube-like line with spray openings for spraying a liquid, the two ends of the tube-like line being connected according to the invention to means which are designed such that the liquid is under a predetermined pressure optionally through the first and / or second end into the tubular line and out through the spray openings.
- the means are advantageously designed as pumps which are each connected to the ends of the tubular line.
- the pumps are expediently connected to one another via a program control unit and are controlled in accordance with program sequences stored in the program control unit.
- the means are designed as a pump and a control unit, this control unit dividing the respective liquid components to the two ends of the tubular line via a rotary element.
- the rotary element is expediently designed as a rotary distributor, so that the spray behavior of the liquid can be influenced and thus controlled via the rotational speed of the rotary distributor.
- the spray device according to the invention makes use of the physical law that according to the continuity equation:
- the pressure p 2 builds up in accordance with the continuity equation and the correspondingly pressurized liquid components endeavor to leave the pipe section II through spray openings.
- the direction of exit of the pressurized liquid components depends essentially on the force relationships of v ⁇ and v 2 in the respective liquid sections, the exit angle being determinable according to vector equations.
- the spray device according to the invention can be used, for example, to create specific spray patterns by means of corresponding program sequences which are interposed in the program control unit.
- a spray pattern according to FIG. 2 in which corresponding amounts of liquid with the same pressure values are present at both ends of the pipe-like line, so that the velocity vectors of the liquid in the pipe are of value approximately in the middle of the pipe-like line here and there is only a corresponding pressure value so that the water jet emerging from the pipe-like line leaves the spray opening essentially at a right angle.
- the spray angle of the spray jets emerging to the respective ends of the tube-like line is always smaller in the direction of flow, since the respective vector components of the liquid velocity have an increasingly smaller influence.
- a spray pattern can be seen in FIG. 3.
- different pressure profile programs are stored in the control unit in order to enable different spray profiles and spray patterns, for example zone flushing, in accordance with the selection of the washing programs.
- a multiplicity of the tube-like lines according to the invention with spray openings are provided in a dishwasher, so that a corresponding cross-sectional area in the washing container can be reliably acted upon by corresponding spray jets.
- the method according to the invention for operating a spray device according to the invention carries out the following steps:
- the outlet angle and the location of the maximum volume flow of the individual spray jets emerging from openings can be precisely controlled by means of the pressure and speed control of the liquid, so that individual areas (zone rinsing) can be intensively loaded with rinsing liquid using a specific spray pattern.
- the device according to the invention does not require any moving parts, such as, for example, rotatable nozzle heads, so that both the production and the assembly are cheaper or more efficient than conventional spray systems.
- the invention is illustrated by the following drawings. Show it:
- Figure 1 is a schematic representation of the physical relationships of the individual pipe sections
- FIGS. 2A, B show a schematic illustration of a spray device according to the invention in two different pressure stages
- Figure 3 shows a preferred embodiment of the present invention, wherein the pressure control is carried out using a rotary distributor.
- Figure 1 shows a schematic sectional view through a tube-like line 1 of a spray device according to the invention with the respective sections I, I *, II, III * and III, spray openings 2 being provided only in section II.
- Sections I and III only serve to transport the liquid 3, the thickness of the arrows representing the respective static pressure state and the length of the arrows representing the speed vector.
- the liquid has a relatively high pressure, so that according to the Bernoulli equation the speed of the liquid 3 is relatively slow.
- the transition area I * which corresponds to a throttle, causes the cross-sectional area to taper, so that there is a relatively high speed in area II, but the liquid pressure is low. This state ensures that no liquid emerges from the spray openings 2.
- the speed is reduced again according to the Bernoulli equation and a higher pressure builds up in the liquid 3.
- FIG. 3 shows a schematic illustration of the spray device according to the invention, washing items 7 being shown schematically and being wetted by liquid jets (represented by arrows).
- the respective spray direction or spray pattern can be controlled, for example, by means of a rotary distributor 4, the rotational speed of the rotary element having a significant influence on the spray pattern.
- the spray openings 2 of the spray device according to the invention are designed as nozzle openings in the exemplary embodiments explained, but can also alternatively be designed as at least one longitudinal slot.
- the exit angle and the location of the maximum volume flow of the individual spray jets emerging from openings can be precisely controlled via the pressure and speed control of the liquid, so that individual areas (zone rinsing) with a specific spray pattern are intensively involved Flush liquid can be applied.
- the spray device according to the invention does not require any moving parts, such as, for example, rotatable nozzle heads, so that both the manufacture and the assembly are less expensive or more efficient than conventional spray systems.
- a dishwasher not described in detail, has at least one of the spray devices according to the invention explained above. These spray devices can alternatively be arranged below at least one crockery basket but also integrated in at least one crockery basket or on a bottom of a washing container of the dishwasher or in the bottom. Of course, combinations of these arrangement options are also possible.
- the spray devices according to the invention explained above are operated as follows with the method according to the invention for operating a spray device according to the invention:
Landscapes
- Washing And Drying Of Tableware (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Detergent Compositions (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10228641 | 2002-06-26 | ||
DE10228641A DE10228641B4 (de) | 2002-06-26 | 2002-06-26 | Geschirrspülmaschine mit einer Sprühvorrichtung und Verfahren |
PCT/EP2003/006767 WO2004002286A2 (de) | 2002-06-26 | 2003-06-26 | Sprühvorrichtung und -verfahren, insbesondere für geschirrspülmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1526799A2 true EP1526799A2 (de) | 2005-05-04 |
EP1526799B1 EP1526799B1 (de) | 2008-04-02 |
Family
ID=29795892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03761521A Expired - Lifetime EP1526799B1 (de) | 2002-06-26 | 2003-06-26 | Sprühvorrichtung und -verfahren, insbesondere für geschirrspülmaschinen |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1526799B1 (de) |
AT (1) | ATE390883T1 (de) |
AU (1) | AU2003242769A1 (de) |
DE (2) | DE10228641B4 (de) |
ES (1) | ES2303906T3 (de) |
WO (1) | WO2004002286A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10351785A1 (de) * | 2003-11-06 | 2005-06-09 | BSH Bosch und Siemens Hausgeräte GmbH | Vorrichtung zur Ansteuerung von Sprühkanälen in Geschirrspülmaschinen |
CN109589073B (zh) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | 一种用于清洗机的喷淋机构以及应用有该喷淋机构的清洗机 |
US11445884B2 (en) | 2020-11-30 | 2022-09-20 | Haier Us Appliance Solutions, Inc. | Dishwasher appliance main conduit with pressure relief hole |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2654894A (en) * | 1952-03-14 | 1953-10-13 | Foot bath | |
DE1177564B (de) * | 1959-04-15 | 1964-09-03 | Siemens Ag | Vorrichtung zum Einstellen der Strahlhoehe fuer Springbrunnen |
GB949954A (en) * | 1960-12-23 | 1964-02-19 | Apv Co Ltd | A new or improved method of or apparatus for producing a liquid spray |
DE1293984B (de) * | 1964-07-23 | 1969-04-30 | Heinicke Instr Of Europ Gmbh | Vorrichtung zur Spruehreinigung |
FR1492249A (fr) * | 1966-07-06 | 1967-08-18 | Perfectionnement aux machines à laver la vaisselle | |
DE3704910C1 (en) * | 1986-08-01 | 1987-10-15 | Dornier Gmbh Lindauer | Blowing device for blowing a treatment medium onto a material web moving in the longitudinal direction |
RU2033131C1 (ru) * | 1989-10-30 | 1995-04-20 | Кащи Петр Зиновьевич | Контрастный душ |
JPH07232115A (ja) * | 1994-02-22 | 1995-09-05 | Fujikawa Kikai Kk | 噴水システム |
JPH0889468A (ja) * | 1994-09-22 | 1996-04-09 | Mitsubishi Electric Home Appliance Co Ltd | 食器洗浄機 |
DE19543960C2 (de) * | 1995-11-25 | 2000-04-06 | Driam Metallprodukt Gmbh & Co | Sprüharm für eine Beschichtungsvorrichtung |
JPH1033451A (ja) * | 1996-07-25 | 1998-02-10 | Nakanishi Seisakusho:Kk | 食器類の洗浄処理方法及び食器収納コンテナ |
DE29809680U1 (de) * | 1998-05-29 | 1998-08-20 | Brüchert, Nils, 64297 Darmstadt | Geschlitztes Rohr zur Erzeugung eines fächerförmigen Wasserstrahls mit der Möglichkeit der Positionsänderung durch Regulierung des Wasserdrucks |
DE19847151C2 (de) * | 1998-10-13 | 2003-02-06 | Aeg Hausgeraete Gmbh | Geschirrkorb für eine Geschirrspülmaschine |
-
2002
- 2002-06-26 DE DE10228641A patent/DE10228641B4/de not_active Expired - Fee Related
-
2003
- 2003-06-26 AU AU2003242769A patent/AU2003242769A1/en not_active Abandoned
- 2003-06-26 EP EP03761521A patent/EP1526799B1/de not_active Expired - Lifetime
- 2003-06-26 AT AT03761521T patent/ATE390883T1/de not_active IP Right Cessation
- 2003-06-26 DE DE50309542T patent/DE50309542D1/de not_active Expired - Lifetime
- 2003-06-26 WO PCT/EP2003/006767 patent/WO2004002286A2/de active IP Right Grant
- 2003-06-26 ES ES03761521T patent/ES2303906T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2004002286A3 * |
Also Published As
Publication number | Publication date |
---|---|
ES2303906T3 (es) | 2008-09-01 |
WO2004002286A3 (de) | 2004-05-27 |
DE10228641B4 (de) | 2008-06-19 |
DE10228641A1 (de) | 2004-01-29 |
EP1526799B1 (de) | 2008-04-02 |
AU2003242769A8 (en) | 2004-01-19 |
WO2004002286A2 (de) | 2004-01-08 |
ATE390883T1 (de) | 2008-04-15 |
DE50309542D1 (de) | 2008-05-15 |
AU2003242769A1 (en) | 2004-01-19 |
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