WO1999028044A1 - Atomiser for fluids - Google Patents

Atomiser for fluids Download PDF

Info

Publication number
WO1999028044A1
WO1999028044A1 PCT/NL1998/000622 NL9800622W WO9928044A1 WO 1999028044 A1 WO1999028044 A1 WO 1999028044A1 NL 9800622 W NL9800622 W NL 9800622W WO 9928044 A1 WO9928044 A1 WO 9928044A1
Authority
WO
WIPO (PCT)
Prior art keywords
atomiser
fluid
gas
cleaning
nozzle
Prior art date
Application number
PCT/NL1998/000622
Other languages
French (fr)
Inventor
Johannes Valster
Original Assignee
Stichting 'pantser'
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 Stichting 'pantser' filed Critical Stichting 'pantser'
Priority to DE69808128T priority Critical patent/DE69808128D1/en
Priority to AT98954821T priority patent/ATE224239T1/en
Priority to AU11771/99A priority patent/AU1177199A/en
Priority to EP98954821A priority patent/EP1035925B1/en
Publication of WO1999028044A1 publication Critical patent/WO1999028044A1/en

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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/522—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings
    • B05B15/5223—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening
    • B05B15/5225—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening the cleaning element being located upstream of the discharge opening or being actuated upstream therefrom

Definitions

  • the invention concerns an atomiser for fluids with the support of compressed gas.
  • the atomiser is provided with cleaning systems for cleaning the fluid nozzle and also the gas nozzle.
  • the cleaning action is introduced by closing the gas supply and executed by springs.
  • the atomiser is so organised that only fluid is forwarded after opening of the gas supply.
  • the atomiser loses no droplets fluid at the start or ending of a period of atomising.
  • a plunger activated by compressed gas positions the cleaning tube into working position with thrust bar after which the fluid supply is opened and then the triangular opening will be open.
  • the atomiser is characterised in that both the fluid nozzle and the gas nozzle are rigid fixed in the atomiser and the cleaning elements are moving.
  • the atomiser is very suitable for humidifying air in spaces, atomising suspensions like disinfectants and such.
  • Atomisers of this kind are known from the European publication EP-A-525164. It turned out that the cleaning is not optimal and the production of noise is considerable. By having a separate cleaning system for the fluid nozzle and the gas nozzle it has been possible to reduce the noise and make the cleaning more effective. Therefore a movable needle is placed in the fluid supply tube and around the fluid supply tube a cleaning element that cleans the gas nozzle.
  • Fig. 1 shows a cross-section along the length of the atomiser at rest
  • Fig. 2 shows the atomising head enlarged and operational.
  • Fig. 3 shows a transferees section at the position of the gas connection.
  • the atomiser body is indicated with (1).
  • Gas nozzle (2) is mounted in body (1).
  • On the other side is bottom (3) mounted.
  • Bottom (3) fits in the cylindrical boring (4) where piston (5) moves axially.
  • Piston (5) is urged by spring ( 6 ) into boring ( 4 ) .
  • Needle holder ( 7 ) which is positioned in the centre of the atomiser slides through piston (5).
  • Stop (8) is adjustable fixed to needle holder (7).
  • Spring (9) forces needle holder (7) via stop (8).
  • Needle holder (7) is drilled on end (10) with a stepped hole (11).
  • Needle (12) slides fitting through fluid nozzle (13) which is fixed in holder (14). At (15) a part of the wall of fluid nozzle (13) is taken away to have a triangular opening.
  • holder (14) In holder (14) is a boring (16) which holds sealing ring (17). End (10) of needle holder (7) slides easily through boring (16).
  • Inside gas nozzle (2) is a cleaning element (18) composed of a holder (19) and tube (20) which slides fittingly around fluid nozzle (13) and sliding fittingly inside blow opening (21) of gas nozzle (2).
  • Holder (19) is urged against body (1) by spring (22).
  • In boring (23) lies with play thrust bar (24). Thrust bar (24) reaches into boring (4) and has such a length that piston (5) with help of spring (6) displaces holder (19) against spring (22) so far that tube (20) reaches through blow opening (21).
  • Compressed gas is supplied via connection (25) and channel (26) which goes from boring (4) until space (27) in gas nozzle (2).
  • Fluid is supplied via connection (28), boring (29) to channel (30) in which needle holder (7) is.
  • channel (30) is at (31) the passage of needle holder (7) sealed.
  • Fig. l shows the atomiser at rest. Fluid is supplied under pressure via connection (28). Needle holder (7) rests with end (10) against seal (17) with the force of spring (9) and seals the connection between channel (30) and triangular at (15). Needle (12) reaches whole through fluid nozzle (13). Piston (5) pushes with the support of spring (6) and thrust bar (24) cleaning element (19, 20) through blow opening

Landscapes

  • Nozzles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention concerns an atomiser for fluids with the support of compressed gas. The atomiser is provided with cleaning systems for cleaning the fluid nozzles (13) and also the gas nozzle (2). The cleaning action is introduced by closing the gas supply and executed by springs (6). The atomiser is so organised that only fluid is forwarded after opening of the gas supply. The atomiser looses no droplets fluid at the start or ending of a period of atomising. A plunger activated by compressed gas positions the cleaning tube (20) into working position with thrustbars (24) after which the fluid supply is opened and then the triangular opening will be open. The atomiser is characterised in that both the fluid nozzle and the gas nozzle are rigid fixed in the atomiser and the cleaning elements are moving. The atomiser is very suitable for humidifying air in spaces, atomising suspensions like desinfectants and such.

Description

Atomiser for fluids.
The invention concerns an atomiser for fluids with the support of compressed gas. The atomiser is provided with cleaning systems for cleaning the fluid nozzle and also the gas nozzle. The cleaning action is introduced by closing the gas supply and executed by springs. The atomiser is so organised that only fluid is forwarded after opening of the gas supply. The atomiser loses no droplets fluid at the start or ending of a period of atomising.
A plunger activated by compressed gas positions the cleaning tube into working position with thrust bar after which the fluid supply is opened and then the triangular opening will be open. The atomiser is characterised in that both the fluid nozzle and the gas nozzle are rigid fixed in the atomiser and the cleaning elements are moving.
The atomiser is very suitable for humidifying air in spaces, atomising suspensions like disinfectants and such.
Atomisers of this kind are known from the European publication EP-A-525164. It turned out that the cleaning is not optimal and the production of noise is considerable. By having a separate cleaning system for the fluid nozzle and the gas nozzle it has been possible to reduce the noise and make the cleaning more effective. Therefore a movable needle is placed in the fluid supply tube and around the fluid supply tube a cleaning element that cleans the gas nozzle.
The invention will be explained with the help of the drawing.
Fig. 1 shows a cross-section along the length of the atomiser at rest
Fig. 2 shows the atomising head enlarged and operational. Fig. 3 shows a transferees section at the position of the gas connection. In Fig. 1 The atomiser body is indicated with (1). Gas nozzle (2) is mounted in body (1). On the other side is bottom (3) mounted. Bottom (3) fits in the cylindrical boring (4) where piston (5) moves axially. Piston (5) is urged by spring ( 6 ) into boring ( 4 ) . Needle holder ( 7 ) , which is positioned in the centre of the atomiser slides through piston (5). Stop (8) is adjustable fixed to needle holder (7). Spring (9) forces needle holder (7) via stop (8). Needle holder (7) is drilled on end (10) with a stepped hole (11). Needle (12) slides fitting through fluid nozzle (13) which is fixed in holder (14). At (15) a part of the wall of fluid nozzle (13) is taken away to have a triangular opening. In holder (14) is a boring (16) which holds sealing ring (17). End (10) of needle holder (7) slides easily through boring (16). Inside gas nozzle (2) is a cleaning element (18) composed of a holder (19) and tube (20) which slides fittingly around fluid nozzle (13) and sliding fittingly inside blow opening (21) of gas nozzle (2). Holder (19) is urged against body (1) by spring (22). In boring (23) lies with play thrust bar (24). Thrust bar (24) reaches into boring (4) and has such a length that piston (5) with help of spring (6) displaces holder (19) against spring (22) so far that tube (20) reaches through blow opening (21).
Compressed gas is supplied via connection (25) and channel (26) which goes from boring (4) until space (27) in gas nozzle (2). Fluid is supplied via connection (28), boring (29) to channel (30) in which needle holder (7) is. In channel (30) is at (31) the passage of needle holder (7) sealed.
The operation is as follows:
Fig. l shows the atomiser at rest. Fluid is supplied under pressure via connection (28). Needle holder (7) rests with end (10) against seal (17) with the force of spring (9) and seals the connection between channel (30) and triangular at (15). Needle (12) reaches whole through fluid nozzle (13). Piston (5) pushes with the support of spring (6) and thrust bar (24) cleaning element (19, 20) through blow opening
(21).
When compressed gas is admitted to connection (25) -piston (5) will move with sufficient gas pressure against spring (6). This allows cleaning element (18) by spring (22) to free blow opening (21). The compressed gas can now flow through blow opening (21). When piston (5) moves further-on needle holder (7) will come into action and free seal (17). When piston (5) reaches the end of its travel triangular opening at (15) will be opened. The dimension of this opening is adjusted with stop (8). Fluid now flows from channel (30) via triangular opening at (15) through fluid nozzle (13) to blow opening (21) and is atomised in the already existing gas stream.
At closing of the gas supply the movements will be executed in reverse sequence, where it must be remarked that the fluid supply is already closed with seal (17) before the pressure has completely gone. Therefore the last fluid from fluid nozzle (13) will always be atomised. With every interruption of the atomising process there is a cleaning movement where the fluid nozzle (13) will be pierced by needle (12) and blow opening (21) by tube (20).

Claims

m aiπι ; r
1.Atomiser for atomising of fluid with the support of compressed gas which is provided with a cleaning system for the fluid nozzle (13) characterised by that the atomiser (1) is provided with a tube (20) for gas nozzle (2) where the cleaning movement of tube (20) is caused by the force of spring (6) against piston (5) where the action of piston (5) is transferred by one or more thrust bar (24).
2. Atomiser according to claim 1 characterised by that at starting the operation of the atomiser (1) by means of compressed gas first tube (20) is retracted by spring (22) and after this the fluid supply is opened, hereafter needle (12) is retracted such that via opening at (15) fluid flows to fluid nozzle (13) and withe the gas flow is atomised.
3. Atomiser according to claim 1 and 2 characterised by that piston (5) at starting the operation of the atomiser (1) by means of compressed gas moves axially where first holder (19) by push bars (24) reaches working position after which stop (8) is brought into action after an adjustable free stroke of piston (5).
4. Atomiser according to claim 1, 2 and 3 characterised by that the fluid supply is closed by the hollow part of needle holder (7) and elastic ring (17) in holder 14.
5. Atomiser according to claim 1, 2 and 3 characterised by that fluid nozzle (13) and gas nozzle are immovable fixed to atomiser body (1) where the cleaning elements (12, 20) activate the cleaning movement at the closing of the gas supply.
* * * *
PCT/NL1998/000622 1997-11-27 1998-10-27 Atomiser for fluids WO1999028044A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69808128T DE69808128D1 (en) 1997-11-27 1998-10-27 Atomizer
AT98954821T ATE224239T1 (en) 1997-11-27 1998-10-27 LIQUID ATOMIZER
AU11771/99A AU1177199A (en) 1997-11-27 1998-10-27 Atomiser for fluids
EP98954821A EP1035925B1 (en) 1997-11-27 1998-10-27 Atomiser for fluids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1007627 1997-11-27
NL1007627A NL1007627C2 (en) 1997-11-27 1997-11-27 Atomizer for atomizing liquid.

Publications (1)

Publication Number Publication Date
WO1999028044A1 true WO1999028044A1 (en) 1999-06-10

Family

ID=19766068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1998/000622 WO1999028044A1 (en) 1997-11-27 1998-10-27 Atomiser for fluids

Country Status (6)

Country Link
EP (1) EP1035925B1 (en)
AT (1) ATE224239T1 (en)
AU (1) AU1177199A (en)
DE (1) DE69808128D1 (en)
NL (1) NL1007627C2 (en)
WO (1) WO1999028044A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008049340A1 (en) * 2006-10-10 2008-05-02 Hua Chen Nozzle device with automatic on-line dirt eliminating function
WO2020064705A1 (en) * 2018-09-25 2020-04-02 Stauper Offshore As Device and system for cleaning a nozzle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2097696A (en) * 1936-06-26 1937-11-02 Macdonald Walter Self cleaning atomizer
FR831076A (en) * 1937-12-16 1938-08-22 Parks Cramer Co Self-cleaning liquid spray device
US2179184A (en) * 1936-06-26 1939-11-07 Parks Cramer Co Self-cleaning nozzle
US2311018A (en) * 1941-01-08 1943-02-16 Bahnson Co Atomizer
US2594045A (en) * 1948-05-01 1952-04-22 Grinnell Corp Atomizer
WO1992013642A1 (en) * 1991-02-12 1992-08-20 Johannes Valster Atomizing head for spraying liquids

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2097696A (en) * 1936-06-26 1937-11-02 Macdonald Walter Self cleaning atomizer
US2179184A (en) * 1936-06-26 1939-11-07 Parks Cramer Co Self-cleaning nozzle
FR831076A (en) * 1937-12-16 1938-08-22 Parks Cramer Co Self-cleaning liquid spray device
US2311018A (en) * 1941-01-08 1943-02-16 Bahnson Co Atomizer
US2594045A (en) * 1948-05-01 1952-04-22 Grinnell Corp Atomizer
WO1992013642A1 (en) * 1991-02-12 1992-08-20 Johannes Valster Atomizing head for spraying liquids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008049340A1 (en) * 2006-10-10 2008-05-02 Hua Chen Nozzle device with automatic on-line dirt eliminating function
WO2020064705A1 (en) * 2018-09-25 2020-04-02 Stauper Offshore As Device and system for cleaning a nozzle

Also Published As

Publication number Publication date
EP1035925A1 (en) 2000-09-20
ATE224239T1 (en) 2002-10-15
DE69808128D1 (en) 2002-10-24
AU1177199A (en) 1999-06-16
NL1007627C2 (en) 1999-05-31
EP1035925B1 (en) 2002-09-18

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