EP2772312A1 - Buse à deux composants et procédé de pulvérisation d'un mélange liquide-gaz - Google Patents

Buse à deux composants et procédé de pulvérisation d'un mélange liquide-gaz Download PDF

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Publication number
EP2772312A1
EP2772312A1 EP14155962.5A EP14155962A EP2772312A1 EP 2772312 A1 EP2772312 A1 EP 2772312A1 EP 14155962 A EP14155962 A EP 14155962A EP 2772312 A1 EP2772312 A1 EP 2772312A1
Authority
EP
European Patent Office
Prior art keywords
liquid
swirl insert
nozzle according
gas mixture
mixing chamber
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
EP14155962.5A
Other languages
German (de)
English (en)
Other versions
EP2772312B1 (fr
Inventor
Timo Schlecht
Lars Vater
Markus Astfalk
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.)
Filing date
Publication date
Application filed by Lechler GmbH filed Critical Lechler GmbH
Publication of EP2772312A1 publication Critical patent/EP2772312A1/fr
Application granted granted Critical
Publication of EP2772312B1 publication Critical patent/EP2772312B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B7/04—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
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • 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
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • 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
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids

Definitions

  • a substantially constant jet angle can be provided by providing a throttle at the downstream end of the mixing chamber and an intermediate chamber between the throttle and the swirl insert in a very simple manner. Downstream of the throttle is a uniform distribution of liquid and gas in the liquid-gas mixture and segregation is prevented. Due to the throttle, the pressure dependence of the beam angle is significantly reduced.
  • the intermediate chamber is sized so that between the choke and the swirl insert no segregation occurs.
  • the perforated disk has only a plurality of passage openings arranged in the region of its edge.
  • the throttle has a diaphragm with a single, central passage opening.
  • the perforated disc is arranged in front of the diaphragm in the flow direction.
  • the aperture is seen in the flow direction spaced from the perforated disc.
  • the diaphragm can be spaced apart from it by approximately the radius of the perforated disc.
  • the size of the central passage opening in the diaphragm is advantageously chosen so that the passage opening a Diameter which is smaller than the distance of the passage openings in the perforated disc to each other. In other words, in a projection, the passage openings are completely covered by the aperture.
  • the spray characteristic of the two-fluid nozzle according to the invention can be changed.
  • the provision of such a pin causes the generation of a full cone spray jet. If no pin is provided on the swirl insert, a hollow cone spray is generated. The pin on the swirl insert is facing the outlet chamber, thus extending in the flow direction. Over the length of the pin, a liquid distribution can be adjusted within the spray. The longer the pin is executed, the more liquid is arranged in the middle of the beam.
  • tangentially feeding the liquid into the mixing chamber By tangentially feeding the liquid into the mixing chamber, a very uniform mixture of liquid and gas is already achieved in the mixing chamber.
  • tangential means perpendicular to the central longitudinal axis, but not directed towards the throttle at the downstream end of the mixing chamber, not even in the opposite direction.
  • the liquid is introduced through the generally tangentially opening liquid inlet so relative to the central longitudinal axis of the mixing chamber so that the liquid is introduced with a twist about the central longitudinal axis.
  • the liquid can thus also be introduced obliquely to the tangential direction, that is offset obliquely in the direction of the central longitudinal axis, into the mixing chamber.
  • At least two fluid inlets are provided, which in each case open into the mixing chamber generally tangentially to an imaginary circle about the central longitudinal axis, but in opposite directions to one another.
  • FIG. 2 shows the two - fluid nozzle of the Fig. 1 in a side view, wherein the locking screw 26 is not shown.
  • a liquid inlet part 28 can be seen, which will be described below with reference to FIGS Fig. 3 and the FIGS. 14 to 17 is explained in more detail.
  • the sectional view of Fig. 3 shows a plan view of the sectional plane AA of Fig. 2 ,
  • Compressed gas is introduced via the compressed gas connection 22 into the mixing chamber 30, which is provided within the first housing section 14.
  • Water to be sprayed is introduced via the liquid connection 24 into a transverse bore of the first housing section 14 and then also introduced into the mixing chamber 30 via the liquid inlet part 28.
  • An in Fig. 3 right end of the transverse bore is closed by the screw 26.
  • the liquid inlet part 28 has two mouth openings 33 a, 33 b for liquid, which are formed by means of a transverse bore 32 in a projecting into the mixing chamber 30 pin of the liquid inlet part 28.
  • This transverse bore 32 is in the illustration of Fig. 14 and the Fig. 16 to recognize.
  • the perforated disc 38 is provided on a screwed into the first housing portion 14 end of the mouthpiece and the aperture 44 and the swirl insert 42 are arranged in the mouthpiece 16.
  • the mouthpiece 16 is, see Fig. 7 , Provided with several paragraphs, which are each matched to the diameter of the perforated disc 38, the aperture 40 and the swirl insert 42.
  • the perforated disc 38 is arranged on a first circumferential shoulder 52.
  • the shutter 44 is placed on a second circumferential ledge 54 and the swirl insert 42 is placed on a third circumferential ledge 56.
  • the swirl insert 42, the orifice 44 and the perforated disc 38 can be easily inserted successively into the mouthpiece 16 and inside the mouthpiece 16 through the circumferential shoulders 56 , 54 or 52 a defined position. Between the peripheral shoulders 52, 54, 56 an interior of the mouthpiece 16 is designed substantially cylindrical. In this case, additional, narrower circumferential paragraphs can be provided in each case at the level of a surface facing the flow of the aperture 44 and the swirl insert 42.
  • the groove is formed by introducing a plurality of blind holes parallel to the central longitudinal axis in the swirl insert 42. Overall, seven blind holes are introduced parallel to the central longitudinal axis 36 in the swirl insert 42 in the illustrated embodiment. An outer circumference of the groove 64 is thereby composed of a total of seven circular sections. The centers of the blind holes lie on a circle concentrically surrounding the central longitudinal axis 36, see also Fig. 12 , Over the length of the pin 62, a distribution of the liquid-gas mixture in the spray cone 20 can be influenced. If the pin 62 is omitted and the surface facing away from the flow of the swirl insert 42 is flat, the spray cone 20 will be formed as a hollow cone. The provision of the pin 62 causes the formation of the spray jet 20 as a full cone.
  • the two-fluid nozzle according to the invention is thus insensitive to fluctuations in the water pressure, as far as their jet angle is concerned.
  • the presentation of the Fig. 23 shows in a diagram qualitatively the change of the water distribution within the spray jet of the two-fluid nozzle of the invention Fig. 1 with changing air pressure or water pressure.
  • the reference numerals 74, 76 and 78 designate different water distributions within the spray jet and it can be seen that with increasing air pressure there is more liquid in the jet center. Overall, the water distributions 74, 76, 78 are approximately rotationally symmetrical about the central axis of the spray jet.
EP14155962.5A 2013-02-28 2014-02-20 Buse à deux composants et procédé de pulvérisation d'un mélange liquide-gaz Active EP2772312B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013203339.7A DE102013203339A1 (de) 2013-02-28 2013-02-28 Zweistoffdüse und Verfahren zum Versprühen eines Flüssigkeit-Gas-Gemisches

Publications (2)

Publication Number Publication Date
EP2772312A1 true EP2772312A1 (fr) 2014-09-03
EP2772312B1 EP2772312B1 (fr) 2017-08-16

Family

ID=50150623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14155962.5A Active EP2772312B1 (fr) 2013-02-28 2014-02-20 Buse à deux composants et procédé de pulvérisation d'un mélange liquide-gaz

Country Status (9)

Country Link
US (1) US9180471B2 (fr)
EP (1) EP2772312B1 (fr)
KR (1) KR101738581B1 (fr)
CN (1) CN104014440B (fr)
BR (1) BR102014004488B1 (fr)
DE (1) DE102013203339A1 (fr)
ES (1) ES2644736T3 (fr)
RU (1) RU2629068C2 (fr)
UA (1) UA116436C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT15758U1 (de) * 2016-12-06 2018-05-15 Primetals Technologies Austria GmbH Zweistoff-Blockdüse mit einer optimierten Außengeometrie

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US10000370B2 (en) 2010-02-05 2018-06-19 Ecowell, Llc Container-less custom beverage vending invention
US10017372B2 (en) 2010-02-05 2018-07-10 Ecowell, Llc Container-less custom beverage vending invention
KR101642907B1 (ko) * 2014-12-01 2016-08-10 주식회사 포스코 노즐 및 냉각매체 공급관의 세정방법
CN105081251B (zh) * 2015-09-24 2017-03-29 攀钢集团工程技术有限公司 扇形段喷嘴
CN105642854A (zh) * 2016-04-05 2016-06-08 中国重型机械研究院股份公司 一种新型方坯连铸二冷水调节结构
CA3036552A1 (fr) 2016-09-13 2018-03-22 Spectrum Brands, Inc. Moteur de pomme de douche a pot de turbulence
US10758875B2 (en) * 2016-12-30 2020-09-01 Semes Co., Ltd. Liquid supply unit, substrate treating apparatus, and method for removing bubbles
KR101979606B1 (ko) * 2016-12-30 2019-05-21 세메스 주식회사 액 공급 유닛, 기판 처리 장치, 그리고 버블 제거 방법
CN107694484B (zh) * 2017-09-30 2020-08-07 湖南沅江赤蜂农化有限公司 一种化学反应釜内反应液注入喷头装置
CN108722703B (zh) * 2018-07-12 2024-01-26 中国石油大学(北京) 逆喷式洗涤喷嘴
US10940493B2 (en) * 2018-07-26 2021-03-09 S. C. Johnson & Son, Inc. Actuator and nozzle insert for dispensing systems
US10888885B2 (en) * 2018-11-15 2021-01-12 Caterpillar Inc. Reductant nozzle with swirling spray pattern
CN109806995B (zh) * 2019-03-07 2020-07-17 北京中冶冶金设备制造有限公司 一种高效长体喷嘴
WO2020229710A1 (fr) * 2019-05-16 2020-11-19 Druids Process Technology S.L. Dispositif pour solidifier une couche de revêtement déposée à chaud sur un fil, installation et procédé correspondants
CN112191383B (zh) * 2020-09-04 2021-09-03 邹城兖矿泰德工贸有限公司 喷雾喷头
KR102491899B1 (ko) * 2021-03-08 2023-01-26 (주)에이피아이 분사 노즐 장치

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GB180387A (en) * 1921-01-26 1922-05-26 William Harry Sayer Improved apparatus for cleansing and sterilising vessels
US1757023A (en) * 1926-10-20 1930-05-06 Ira E Smith Oil burner
US2249482A (en) * 1940-02-24 1941-07-15 Gen Electric Oil burner nozzle
GB2096911A (en) * 1981-04-21 1982-10-27 Simpkins David Rogers Price Atomizer
US5176325A (en) * 1991-05-14 1993-01-05 Spraying Systems Co. Air atomizing spray nozzle assembly
WO1996021517A1 (fr) * 1995-01-10 1996-07-18 Spraying Systems Co. Appareil pour atomiser et vaporiser des liquides

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Publication number Priority date Publication date Assignee Title
GB180387A (en) * 1921-01-26 1922-05-26 William Harry Sayer Improved apparatus for cleansing and sterilising vessels
US1757023A (en) * 1926-10-20 1930-05-06 Ira E Smith Oil burner
US2249482A (en) * 1940-02-24 1941-07-15 Gen Electric Oil burner nozzle
GB2096911A (en) * 1981-04-21 1982-10-27 Simpkins David Rogers Price Atomizer
US5176325A (en) * 1991-05-14 1993-01-05 Spraying Systems Co. Air atomizing spray nozzle assembly
WO1996021517A1 (fr) * 1995-01-10 1996-07-18 Spraying Systems Co. Appareil pour atomiser et vaporiser des liquides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT15758U1 (de) * 2016-12-06 2018-05-15 Primetals Technologies Austria GmbH Zweistoff-Blockdüse mit einer optimierten Außengeometrie

Also Published As

Publication number Publication date
UA116436C2 (uk) 2018-03-26
BR102014004488A2 (pt) 2015-12-01
DE102013203339A1 (de) 2014-08-28
RU2629068C2 (ru) 2017-08-24
CN104014440A (zh) 2014-09-03
EP2772312B1 (fr) 2017-08-16
BR102014004488B1 (pt) 2020-12-08
US20140239081A1 (en) 2014-08-28
ES2644736T3 (es) 2017-11-30
KR20140108165A (ko) 2014-09-05
US9180471B2 (en) 2015-11-10
KR101738581B1 (ko) 2017-05-22
RU2014107506A (ru) 2015-09-10
CN104014440B (zh) 2018-01-30

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