EP1470864B1 - Zweistoffsprühdüse - Google Patents

Zweistoffsprühdüse Download PDF

Info

Publication number: EP1470864B1
Authority: EP; European Patent Office
Prior art keywords: fluid; spray nozzle; liquid; displacement member; mixing chamber
Prior art date: 2003-04-24
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.): Expired - Lifetime

Application number

EP04006996A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP1470864A3 (de

EP1470864A2 (de

Inventor

Emmerich Bauer

Reinhard Gaa

Dieter Kelz

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.)

Lechler GmbH

Original Assignee

Lechler 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.)

2003-04-24

Filing date

2004-03-24

Publication date

2010-12-22

2004-03-24 Application filed by Lechler GmbH filed Critical Lechler GmbH

2004-03-24 Priority to PL04006996T priority Critical patent/PL1470864T3/pl

2004-10-27 Publication of EP1470864A2 publication Critical patent/EP1470864A2/de

2006-06-14 Publication of EP1470864A3 publication Critical patent/EP1470864A3/de

2010-12-22 Application granted granted Critical

2010-12-22 Publication of EP1470864B1 publication Critical patent/EP1470864B1/de

2024-03-24 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

239000007921 spray Substances 0.000 title claims abstract description 21
239000012530 fluid Substances 0.000 title claims abstract description 17
238000006073 displacement reaction Methods 0.000 claims description 30
239000007788 liquid Substances 0.000 abstract description 41
239000003595 mist Substances 0.000 abstract 2
239000000203 mixture Substances 0.000 description 5
230000007423 decrease Effects 0.000 description 2
239000007789 gas Substances 0.000 description 2
239000008240 homogeneous mixture Substances 0.000 description 2
230000003716 rejuvenation Effects 0.000 description 2
230000000694 effects Effects 0.000 description 1
239000007792 gaseous phase Substances 0.000 description 1
239000007791 liquid phase Substances 0.000 description 1
230000002093 peripheral effect Effects 0.000 description 1
238000001228 spectrum Methods 0.000 description 1
239000000126 substance Substances 0.000 description 1
238000011144 upstream manufacturing Methods 0.000 description 1

Images

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
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
- 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
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
- B05B7/0466—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the central liquid flow towards the peripheral gas flow

Definitions

the invention relates to a Zweistoffsprühdüse with a arranged in a housing in front of an outlet mixing chamber, open into the supply channels for a liquid and a gaseous medium and in which a baffle body is provided, on which the liquid jet impinges, wherein the baffle body as a coaxial with the liquid jet aligned, extending in the flow direction up to a tear-off displacement body is formed, and wherein the supply channels for the gaseous medium in the surrounding the widening portion of the displacement body surrounding part of the mixing chamber.
the amount of gas is finely distributed usually introduced into a liquid jet and the resulting more or less homogeneous mixture is discharged through the narrowed outlet opening.
a two-substance spray nozzle is out of the DE 31 31 070 C2 It is known where a baffle table has been arranged in a mixing chamber, that of an inlet opening opposite to the liquid.
the impingement surface of the impact table is arranged perpendicular to the axis of the liquid jet and in alignment with the feed axis of the gaseous medium in the middle of a mixing chamber.
the impinging on the baffle table liquid jet therefore bursts in the mixing chamber and is taken along by the compressed air guided perpendicular to it, evenly distributed as possible in the further course of the mixing chamber and then discharged through a lying on the axis of the supply opening for the compressed air outlet opening.
the liquid jet impinges on a baffle plate and is mixed with air, which is introduced tangentially into the mixing chamber located in front of the baffle plate.
the mixture thus generated by turbulence then enters an annular channel behind the baffle plate and is discharged at an outlet opening, which is followed by a second baffle plate.
the invention has for its object to provide a two-component spray nozzle of the type mentioned as homogeneous as possible mixture between the liquid and gaseous phase, which allows an arrangement of the outlet opening or outlet openings at different locations.
the invention is to solve this problem in a two-component spray nozzle of the type mentioned in that the displacement body is designed as a cone and especially as a double cone, which widens in the flow direction to the trailing edge and then tapers again.
the liquid entering the mixing chamber as a full jet is divided, starting from a distribution tip, into a liquid film, the thickness of which decreases as the diameter of the displacement body increases. On this relatively thin liquid film is at the trailing edge passed the gaseous medium of the displacement body and divides it inside the nozzle into fine drops.
the liquid film can be uniformly distributed over the circumference of the displacement body, a substantially homogeneous mixture with the air is achieved, which leads to a drop spectrum of great uniformity in the spray jet emitted.
the displacement body is designed as a cone whose axis coincides with the axis of the liquid supply, and specifically, the displacement body is designed as a double cone, which widens in the flow direction to the tear-off and then rejuvenated.
This embodiment together with the correspondingly narrowing inner wall of the mixing chamber, makes it possible to attach the outlet opening or the outlet openings at different locations in the region behind the tear-off edge. It is thereby also given the mixing range, which makes the inventive design, however, not too large flow length required.
the supply channels for the gaseous medium in the flow direction in front of the tear-off edge can open and they can run approximately parallel to the flow direction of the liquid jet, which has the advantage that the supply channels for both media can be guided to a common connection point and not , as in two-fluid spray nozzles according to the prior art are perpendicular to each other and have a relatively large space requirement.
the inner wall of the mixing chamber can extend approximately parallel to the contour of the displacement body, so that the air to be mixed with the liquid can be guided closely to the displacement body and to the tear-off edge, where the mixture with the liquid film ring.
the widening angle of the cone in the region of the tear-off edge can increase so that a peripheral edge forms the largest diameter.
a deflection of the liquid film takes place in a plane extending approximately perpendicular to the supplied air plane, which is useful for mixing.
the outlet opening consist of several arranged behind the region of the tear-off edge of the displacement body outlet holes, the number, position and exit angle depending on the desired spray angle and spray is selectable.
Decisive for the effect of the invention is the distribution of the supplied liquid into an increasingly thin liquid film and its mixing with the air supplied in the region of the tear-off edge of the displacement body.
the single drawing shows a nozzle head 1, which can be attached in unspecified manner with a connecting thread 2 to a dash-dotted lines indicated pipe 3, which is provided with supply channels for a liquid medium and for a gaseous medium.
the nozzle head 1 consists of the already mentioned connecting part 3 with the connecting thread 2 and a screwed onto a thread 4 of the connector part 3 cap part 5, which is provided on its inside with a baffle body in the form of a displacement body 6, which is connected by a screw 7 with the cap 5, or is pressed.
the displacement body 6 consists of a rotationally symmetrical double cone, the tip 8 of the cap 5 facing away from the cone part 9 on the axis 10 of the nozzle head 1 and a central Zu Industriesbohrung 11, which is supplied to the liquid to be sprayed in the direction of the arrow 12 under pressure ,
the cone portion 9 then passes into an annular truncated cone portion 13, the slope of which is shallower relative to the axis 10 and which merges into a cylindrical ring 21 which forms a tear-off edge 15 at its periphery from which the cone portion 14 extends downwardly into the cap 5 rejuvenated in.
annular mixing chamber 16 is formed, into which feed ports 17 for the gaseous medium flow through the connecting part 3, which is fed in the direction of the arrows 18 through the dot-dashed tube or in another way.
the inner walls of the mixing chamber 16 in this case run approximately parallel to the contour of the displacement body 6.
supply bores 17 extend approximately parallel to the feed bore 11 for the liquid and open into a region of the mixing chamber 16 which is still in front of the tear-off edge 15.
exit holes 19 are provided behind the tear edge, which are distributed uniformly on the circumference of the cap 5.
the exit angle of these holes 19, measured to the axis 10 of the nozzle head 1, may be selected differently. This also applies to the number of holes 19 and their radial distance from the central axis 10. It would also be possible, for example, to put the outlet openings closer to the axis 10 and to change the exit angle, as indicated by the axis 20.
the liquid entering in the direction of the arrow 12 enters the mixing chamber 16 as a full jet and impinges on the tip 8 of the cone 9.
the liquid is thereby evenly distributed on the surface of the cone 9 and the thickness of the resulting liquid film decreases with increasing diameter of the cone 9 from.
the liquid film is deflected in a direction which is almost perpendicular to the feed direction of the bores 17.
the liquid film is therefore entrained by the inflowing gaseous medium in the mixing chamber, evenly distributed to fine droplets and then passed as sprays through the openings 19 to the outside.
the mode of action of the fine distribution of the liquid in the supplied air is based on the division of a liquid jet into an annular liquid film which is entrained in a particularly effective manner by air jets impinging transversely thereto. As can be seen, the space requirement of such a spray head is relatively low.
a rotationally symmetric cone is shown as a displacement body.
a pyramid-shaped displacement body which also, starting from a distribution tip, divides the liquid into a film, which is then divided by the inflowing gaseous medium.

Landscapes

Nozzles (AREA)
Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

EP04006996A 2003-04-24 2004-03-24 Zweistoffsprühdüse Expired - Lifetime EP1470864B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL04006996T PL1470864T3 (pl)	2003-04-24	2004-03-24	Pneumatyczna dysza rozpyłowa

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE10319582A DE10319582B4 (de)	2003-04-24	2003-04-24	Zweistoffsprühdüse
DE10319582		2003-04-24

Publications (3)

Publication Number	Publication Date
EP1470864A2 EP1470864A2 (de)	2004-10-27
EP1470864A3 EP1470864A3 (de)	2006-06-14
EP1470864B1 true EP1470864B1 (de)	2010-12-22

Family

ID=32946457

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP04006996A Expired - Lifetime EP1470864B1 (de)	2003-04-24	2004-03-24	Zweistoffsprühdüse

Country Status (8)

Country	Link
US (1)	US6969014B2 (da)
EP (1)	EP1470864B1 (da)
JP (1)	JP4754785B2 (da)
AT (1)	ATE492349T1 (da)
DE (2)	DE10319582B4 (da)
DK (1)	DK1470864T3 (da)
ES (1)	ES2355821T3 (da)
PL (1)	PL1470864T3 (da)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20060237556A1 (en) *	2005-04-26	2006-10-26	Spraying Systems Co.	System and method for monitoring performance of a spraying device
JP4285495B2 (ja) *	2006-04-03	2009-06-24	セイコーエプソン株式会社	焼結体の製造方法
DE102006037822A1 (de) *	2006-08-12	2008-02-14	Evonik Degussa Gmbh	Verfahren zum Ausbringen einer Dispersion
US7827929B2 (en) *	2007-02-23	2010-11-09	Frito-Lay North America, Inc.	Pneumatic seasoning system
DE102009037828A1 (de)	2008-11-11	2010-05-20	Wurz, Dieter, Prof. Dr.	Zweistoffdüse, Bündeldüse und Verfahren zum Zerstäuben von Fluiden
JP2011224541A (ja) *	2010-03-31	2011-11-10	I Tac Giken Kk	混合流体噴射装置
WO2011123865A1 (en)	2010-04-02	2011-10-06	Sta-Rite Industries, Llc	Air aspiration device
EP3015173B1 (en)	2014-10-29	2017-09-06	PNR Italia S.r.l.	Internal mix air atomizing spray nozzle
CN105269393B (zh) *	2015-12-02	2018-09-25	四川明日宇航工业有限责任公司	高强度钢航空结构件油气混合喷射铣削润滑系统
CN105345592B (zh) *	2015-12-02	2018-09-04	四川明日宇航工业有限责任公司	铝合金航空结构件油气混合喷射铣削润滑系统
CN105269392B (zh) *	2015-12-02	2018-09-25	四川明日宇航工业有限责任公司	钛合金航空结构件油气混合喷射铣削润滑系统
DE102016208653A1 (de) *	2016-05-19	2017-11-23	Lechler Gmbh	Düse zum Versprühen von Flüssigkeiten
WO2021146737A1 (en) *	2020-01-18	2021-07-22	Texas Scientific Products Llc	Analytical nebulizer

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3693886A (en)	1971-10-27	1972-09-26	Delavan Manufacturing Co	Swirl air nozzle
US4349156A (en) *	1980-08-11	1982-09-14	Spraying Systems Company	Efficiency nozzle
JPS5794361A (en)	1980-12-03	1982-06-11	Yoshio Koyama	Method and device for minute particle spray
US4655395A (en) *	1984-04-17	1987-04-07	The Babcock & Wilcox Company	Adjustable conical atomizer
EP0248539B1 (en) *	1986-05-07	1992-01-29	Hitachi, Ltd.	Atomizer and coal-water slurry fired boiler utilizing the same
JPS63226513A (ja) *	1986-05-07	1988-09-21	Hitachi Ltd	アトマイザ
US4982716A (en) *	1988-02-19	1991-01-08	Toyota Jidosha Kabushiki Kaisha	Fuel injection valve with an air assist adapter for an internal combustion engine
US5035358A (en) *	1989-03-22	1991-07-30	Toyota Jidosha Kabushiki Kaisha	Fuel injector for use in an engine
DE4011891A1 (de) *	1990-04-12	1991-10-17	Lechler Gmbh & Co Kg	Zweistoffzerstaeubungsduese
DE4102632A1 (de) *	1991-01-30	1992-08-06	Pfeiffer Erich Gmbh & Co Kg	Austragduese fuer medien
JP2739749B2 (ja) *	1992-01-31	1998-04-15	宇部興産株式会社	スラリー燃料用バーナ
US5732885A (en) *	1994-10-07	1998-03-31	Spraying Systems Co.	Internal mix air atomizing spray nozzle
US5553785A (en) *	1995-01-10	1996-09-10	Spraying Systems Co.	Enhanced efficiency apparatus for atomizing and spraying liquid
DE19529375A1 (de) *	1995-08-10	1997-02-13	Bosch Gmbh Robert	Brennstoffeinspritzventil
EP0879636A1 (de) *	1997-05-22	1998-11-25	Innova/G Entwicklungsgesellschaft m.b.H.	Mischkopf zum zerstäuben von Flüssigkeiten in Gas- oder Dämpfförmigen Medien
DE19812241A1 (de) *	1998-03-20	1999-10-07	Univ Karlsruhe	Flüssigkeitszerstäuber für zu zerstäubende Flüssigkeit
US6322003B1 (en) *	1999-06-11	2001-11-27	Spraying Systems Co.	Air assisted spray nozzle
DE20106613U1 (de) *	2001-04-17	2001-07-12	Horn, Franziskus, Dr., Santiago, Lo Barnechea	Düse zur Verwendung von Phosphorwasserstoff

2003
- 2003-04-24 DE DE10319582A patent/DE10319582B4/de not_active Expired - Fee Related
2004
- 2004-03-24 AT AT04006996T patent/ATE492349T1/de active
- 2004-03-24 DK DK04006996.5T patent/DK1470864T3/da active
- 2004-03-24 ES ES04006996T patent/ES2355821T3/es not_active Expired - Lifetime
- 2004-03-24 PL PL04006996T patent/PL1470864T3/pl unknown
- 2004-03-24 EP EP04006996A patent/EP1470864B1/de not_active Expired - Lifetime
- 2004-03-24 DE DE502004012015T patent/DE502004012015D1/de not_active Expired - Lifetime
- 2004-04-16 JP JP2004121650A patent/JP4754785B2/ja not_active Expired - Fee Related
- 2004-04-23 US US10/830,425 patent/US6969014B2/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
DE10319582B4 (de)	2007-03-22
JP2004322087A (ja)	2004-11-18
EP1470864A3 (de)	2006-06-14
PL1470864T3 (pl)	2011-05-31
DE10319582A1 (de)	2004-12-02
EP1470864A2 (de)	2004-10-27
DE502004012015D1 (de)	2011-02-03
ATE492349T1 (de)	2011-01-15
US6969014B2 (en)	2005-11-29
JP4754785B2 (ja)	2011-08-24
DK1470864T3 (da)	2011-04-11
ES2355821T3 (es)	2011-03-31
US20040262429A1 (en)	2004-12-30

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