EP1519674A2 - Dispositif et procede de pulverisation - Google Patents

Dispositif et procede de pulverisation

Info

Publication number
EP1519674A2
EP1519674A2 EP03740356A EP03740356A EP1519674A2 EP 1519674 A2 EP1519674 A2 EP 1519674A2 EP 03740356 A EP03740356 A EP 03740356A EP 03740356 A EP03740356 A EP 03740356A EP 1519674 A2 EP1519674 A2 EP 1519674A2
Authority
EP
European Patent Office
Prior art keywords
spray
liquid
program
control unit
line
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
Application number
EP03740356A
Other languages
German (de)
English (en)
Other versions
EP1519674B1 (fr
Inventor
Hans-Peter Nannt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1519674A2 publication Critical patent/EP1519674A2/fr
Application granted granted Critical
Publication of EP1519674B1 publication Critical patent/EP1519674B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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—Perforated pipes or troughs, e.g. spray booms; Outlet elements therefor

Definitions

  • the present invention relates to a spraying device and a spraying method.
  • Known spray devices e.g. for apple washers, car washes, sprinklers and dishwashers, etc., often have rotation arms through which spray liquid is pumped and the rotational movement is generated by the return force of the escaping liquid.
  • These so-called spray arms are supplied with rinsing liquid via a pump. Since treatment rooms of e.g. Apple washing machines, car washes and dishwashers etc. but also lawns mainly have a rectangular floor plan, the corner areas of these rooms or areas are insufficiently reached by the spray arms, which essentially walk in a circular path. This disadvantage is avoided, for example, by pipes with nozzle openings, etc., which have the disadvantage of being able to spray only point-like areas and therefore the spaces or surfaces to be acted on cannot be adequately wetted with the liquid to be sprayed at all points.
  • the spray device consists of at least one two-end tubular line with spray openings for spraying a liquid, the two ends of the tubular 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 at 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.
  • 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, P, 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 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 low.
  • 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.
  • spray devices according to the invention explained above are operated with the method according to the invention for operating a spray device according to the invention as follows: - selection of a spray program stored in a program memory;

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
EP03740356A 2002-06-26 2003-06-26 Dispositif et procede de pulverisation Expired - Lifetime EP1519674B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10228642 2002-06-26
DE10228642A DE10228642A1 (de) 2002-06-26 2002-06-26 Sprühvorrichtung und -verfahren
PCT/EP2003/006768 WO2004002287A2 (fr) 2002-06-26 2003-06-26 Dispositif et procede de pulverisation

Publications (2)

Publication Number Publication Date
EP1519674A2 true EP1519674A2 (fr) 2005-04-06
EP1519674B1 EP1519674B1 (fr) 2008-08-20

Family

ID=29795893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03740356A Expired - Lifetime EP1519674B1 (fr) 2002-06-26 2003-06-26 Dispositif et procede de pulverisation

Country Status (6)

Country Link
EP (1) EP1519674B1 (fr)
AT (1) ATE405207T1 (fr)
AU (1) AU2003280506A1 (fr)
DE (2) DE10228642A1 (fr)
ES (1) ES2311103T3 (fr)
WO (1) WO2004002287A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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
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
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004002287A3 *

Also Published As

Publication number Publication date
DE50310370D1 (de) 2008-10-02
AU2003280506A8 (en) 2004-01-19
ATE405207T1 (de) 2008-09-15
WO2004002287A2 (fr) 2004-01-08
ES2311103T3 (es) 2009-02-01
DE10228642A1 (de) 2004-01-29
WO2004002287A3 (fr) 2004-05-27
AU2003280506A1 (en) 2004-01-19
EP1519674B1 (fr) 2008-08-20

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