EP3204167A1 - Zweistoffdüse - Google Patents
ZweistoffdüseInfo
- Publication number
- EP3204167A1 EP3204167A1 EP14783810.6A EP14783810A EP3204167A1 EP 3204167 A1 EP3204167 A1 EP 3204167A1 EP 14783810 A EP14783810 A EP 14783810A EP 3204167 A1 EP3204167 A1 EP 3204167A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- nozzle
- gas
- flow space
- channel
- 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
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- 239000012530 fluid Substances 0.000 claims description 85
- 238000000034 method Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 241001295925 Gegenes Species 0.000 claims 1
- 230000009977 dual effect Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000000889 atomisation Methods 0.000 description 11
- 206010022000 influenza Diseases 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- GJAARPKBDFKHFS-UHFFFAOYSA-N Gerin Natural products COC(=O)C(=C)C1CC2C(=C)C(=O)C=CC2(C)CC1OC(=O)C GJAARPKBDFKHFS-UHFFFAOYSA-N 0.000 description 1
- 241001282736 Oriens Species 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B05B7/0483—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 gas and liquid jets intersecting in the mixing chamber
-
- 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
- B05B7/0081—Apparatus supplied with low pressure gas, e.g. "hvlp"-guns; air supplied by a fan
-
- 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
- B05B7/025—Nozzles having elongated outlets, e.g. slots, for the material to be sprayed
-
- 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
- B05B7/045—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 the gas and liquid flows being parallel just upstream the mixing chamber
-
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
Definitions
- the invention relates to a two-fluid nozzle, a nozzle ⁇ device and a method for operating a two-fluid nozzle.
- Two-fluid nozzles in applications are where fine spray droplets needed Enclosure ⁇ Lich used for example in devices for dust suppression ⁇ supply or gas cooling devices.
- a two-substance nozzle is supplied with a liquid or a liquid mixture or a suspension, which may also contain additives, such as cleaning agents or the like. The following is spoken of a liquid, wherein liquid mixtures should also be included.
- a pressurized gas flows out of the liquid from a Kam ⁇ mer and aids atomization.
- the atomized by means of compressed air liquid is called atomized
- Spray discharged at least one outlet opening of the two-fluid nozzle Spray discharged at least one outlet opening of the two-fluid nozzle.
- a two-fluid nozzle is known, for example, from EP 0 714 706 B1.
- the two-fluid nozzle has a fluid connection and an air connection.
- the circuit is diesstechniksan- with a fluid passage fluidly verbun ⁇ extending along a nozzle axis coaxial with and opens into a mixing chamber.
- the liquid stream flows as a jet along the nozzle axis into the mixing chamber one.
- Radially to the nozzle axis open into the mixing chamber several In etechnischskanäle which are fluidly connected to the air connection.
- the axial liquid flow is atomized via the air flowing transversely thereto and discharged downstream along the nozzle axis through an outlet opening to the outside.
- the nozzles are usually operated with water as a liquid and compressed air as admission medium for atomizing the water.
- compressed air compressors are used, which are expensive to purchase and maintenance-intensive.
- the compressors must be brought to the place of use or available there, which can not always be ensured. Due to gerin ⁇ ger dimensions of the channels in known two-fluid nozzles this water must also be supplied as free of dirt particles as possible, so that the nozzle does not clog.
- a two ⁇ material nozzle having a nozzle body defining a flow space.
- a gas channel serves to supply a gas, for example air, and opens into the flow space.
- a liquid channel of the two-substance nozzle is designed to supply a liquid, for example water, and has at least one outlet opening. Through the outlet opening, the liquid exits into the flow space.
- the liquid is applied in the Strö ⁇ mung space from the gas to form a liquid film ⁇ in the flow space.
- the outlet defines an exit direction for the liquid from the liquid channel in the flow space.
- the outlet ⁇ opening is directed opposite to a flow direction of the liquid film in the flow space.
- the liquid emerging from it is acted upon by the gas flow in such a way that it is deflected and then continues to flow essentially in the opposite direction of flow. It is formed into a thin film of liquid.
- the gas such as air, liquid applied ⁇ films.
- the flow direction of the liquid film is determined from the gas flow direction.
- the liquid and gas exit from a nozzle orifice out of the two-fluid nozzle.
- a two-substance nozzle which has a nozzle body which delimits a flow space, a gas channel and a liquid ⁇ keitskanal.
- the gas channel opens into the flow ⁇ space and is adapted to supply a gas in the flow space.
- the liquid channel is set up to supply a liquid into the flow space.
- the liquid ⁇ keitskanal has at least one outlet opening through which the liquid exits into the flow space.
- the liquid will be ⁇ alsschlagt in the flow space of the gas to form a liquid film in the flow space.
- the liquid channel and the outlet opening extend in such a way that they project onto a pro at a transversely through the flow space and perpendicular to the exit direction Pro etechnischsebene form an at least partially curved, tortuous or wormed ⁇ schlnature Land.
- a sufficient length of the outlet opening may be provided for the liquid, which made it possible ⁇ light, an extended, substantially uniform, thin liquid film to emerge after exiting the outlet opening.
- He may also snake-like, meandering or otherwise suitable manner, with one or more turns or loops transverse to extend through the nozzle body to create the longest possible arc length of the outlet opening or ei ⁇ ne as large as possible defined by the outlet exit surface ,
- the nozzle body may also have the shape of a square or rectangular cylinder.
- the liquid channel is at least section- wise arranged within the flow space, so that the liquid channel of the flow space at least is surrounded in sections.
- the liquid channel preferably extends through the flow space. In the ⁇ se way, the liquid can be ejected over a large area in the flow space and distributed to form a film.
- the fluid channel extends we ⁇ ilias sectionally arcuately around the Strö ⁇ flow direction. Due to the arc shape of the fluid channel in the flow space, a relatively large outlet opening for the liquid may be provided so that the flues ⁇ stechnik can be distributed to a large conducting surface for the liquid film in a ⁇ yet compact nozzle body.
- the liquid channel extends at least in sections along the circumference of the nozzle body.
- the fluid channel a flow direction defined by the channel, which is orien ⁇ advantage preferably transverse to the flow direction of the liquid film ⁇ outside the channel. This can provide through the nozzle body, a long flow path of the flues ⁇ stechniksfilms.
- the liquid channel is formed spirally.
- the liquid channel is at least partially a spiral.
- the spiral can be, for example, but not necessarily an Archimedean spiral.
- the spiral can be one or three-dimensional, so one
- the fluid channel can also be circular, for example.
- the fluid channel may also hold several example concentric circular sections ent ⁇ .
- the fluid channel may also be wholly or cut, a desired path following with radial segments and peripheral segments, for example, be meandering, serpentine, zigzag-shaped, but preferably without kinks, etc. disposed in the flow space so that a sufficient for the present purposes length of the liquid channel and the outlet opening can be si ⁇ cher réelle ,
- the liquid channel is formed by at least one first channel wall and ei ⁇ ner second channel wall.
- a guide body with Leit ⁇ surfaces may be formed for the liquid film.
- the supplied liquid ⁇ quantity can be particularly effectively used for liquid film formation and atomization of the supplied quantity of gas.
- the guide surface which is preferably formed by the outer surfaces of the first channel wall and the outer surface of the second channel ⁇ wall, a sufficient effective length for the flowing gas can be created on the liquid film. In this way, even with low gas pressure extremely fine atomization of the liquid can be achieved.
- the flowing to the nozzle opening gas flows past the guide surface and drives the liquid or the flues ⁇ stechniksfilm to the nozzle opening.
- the liquid film By flowing over the liquid film gas, the liquid film can be excited to vibrate.
- the film can advantageously be stretched and thus thinner.
- the guide body is designed such that it can divide the liquid flow after exiting the outlet opening into the flow space, so that the liquid flow flows around the guide body in the flow space preferably on both sides.
- the guide body is also designed to promote the deflection of the liquid ⁇ speed in the flow direction through the flow space against the discharge direction and the film formation.
- the outlet opening is preferably angeord ⁇ net on an end face of the liquid channel and the guide body, so that the liquid is distributed after deflection substantially uniformly on the outer channel wall surfaces which form the guide surface.
- the second channel wall is, viewed in cross-section of the preference ⁇ cylindrical nozzle body through the center or Zy ⁇ cylinder axis, preferably mirror image of the first channel wall, wherein the mirror plane is parallel to the central or cylindrical axis.
- the guide body in cross section is symmetrical relative to an axis passing through the imaginary connecting line from the off ⁇ opening of the liquid passage to the nozzle opening of the nozzle body.
- the guide body in the direction of one of the outlet opening of the liquid channel facing away from a preferably symmetrical wedge shape.
- the guide body may also have an elongate teardrop shape in cross section. These forms are particularly suitable for deflecting the liquid as it exits the exit opening and for forming and guiding the thin liquid film.
- the nozzle opening facing the end face of the guide body preferably forms a trailing edge for the liquid film, which is located in the vicinity of the nozzle opening. By the trailing edge, the liquid can be separated from the guide surface and carried out of the nozzle body through the nozzle opening to the outside and be atomized by the gas flow.
- the outlet opening of the liquid channel is preferably formed contiguous. This allows a ungehinder ⁇ th exit of the liquid in the flow space and promotes the formation of a closed possible ununterbro ⁇ rupted liquid film.
- the outlet opening preferably follows the shape or the curve of the portion of the liquid passage which extends through the flow space.
- the exit for example, the opening is likewise designed in a spiral, circular, meandering or in some other way with one or more windings or loops, such as the liquid channel.
- the outlet opening preferably extends along the circumference of the flow space.
- the outlet opening may, for example, extend arcuately along an inner radial boundary surface of the flow space.
- the flow space can be limited, for example, by a cylindrical wall, along which the outlet opening extends at least in sections.
- the outlet opening may, for example, also extend arcuately along the circumference of the flow space or of the nozzle body on a path of decreasing diameter.
- a spiral-shaped outlet opening the spiral shape of the outlet opening along the circumference of the nozzle body preferably extends at least one turn (to Wenig ⁇ least 360 °), or even by at least two turns of time.
- the outlet opening can be "wound up" in this manner. This applies preferably also for the liquid ⁇ keitskanal and the guide surface. Due to the wound shape of the exit opening and the guide surface of the liquid film can be exposed to the gas flow over the entire cross-sectional area of the nozzle body. In this example, a long exit orifice and a large Leitflä ⁇ che confined space may be formed in a compact nozzle body.
- the large ge ⁇ formed on the surface of the guide member guide surface provides a thin film of water on which the gas flow can act over a large area.
- a fine atomization of the liquid reaches the ⁇ .
- Such pressures can with normal fans or overall blower be generated.
- the use in the acquisition, operation and maintenance of expensive compressors can be avoided. This broadens the scope and variety of job sites where the two-fluid nozzle of the present invention can be used.
- the outlet opening is preferably an egress ⁇ slit or gap, whereby the liquid is discharged almost line- shaped.
- the outlet ⁇ slot is disposed on the side facing the gas channel end side of the guide surface. In this way, a particularly thin, large-area, preferably coherent liquid film can be produced on the guide surface.
- the free flow path through and out of the nozzle body preferably always has a dimension of at least 2 mm transversely to the flow direction.
- the so- ⁇ -created two-fluid nozzle is less susceptible to Verstop ⁇ levies, even when subjected to the two-fluid nozzle with with debris-laden water.
- the two-fluid nozzle can be used reliably even in places where clean water is not available for the nozzle.
- the flow space may have a portion that is spiral.
- the spiral section can contain ralförmigen liquid channel.
- the spiral flow space may have an open end face, at which the gas channel opens into the flow space.
- the outlet ⁇ opening of the liquid channel is preferably oriented in the same direction as the open end of the spiral ⁇ shaped portion of the flow space.
- the Austrittsöff ⁇ voltage may be offset from the front face to the back toward the nozzle opening.
- the gas flow can be radially subdivided, the flow space nevertheless remaining connected. In this way, the existing gas stream can be directed past the guide surfaces of the liquid channel particularly closely over a long effective length.
- the gas channel opens to the outlet opening oppositely directed into the flow space, wherein the mouth of the nozzle opening is opposite.
- the gas flow through the flow space is fixed in a direction opposite to the direction of the liquid flow at the exit from the exit opening.
- the liquid is thus deflected particularly effectively and distributed on the guide surface.
- the flow space tapers in the direction of the nozzle outlet. This increases the flow rate of the gas, which promotes the liquid ⁇ keitsfilm realise and the expulsion of the liquid from the nozzle opening.
- the nozzle opening which may also be referred to as a nozzle outlet, is preferably a slot or a gap.
- the nozzle outlet gap may be curved around the flow direction, for example spirally curved.
- the nozzle body is substantially cylindrical and has a gas port connected in fluid communication with the gas passage, and a liquid port, which is connected in terms of flow with the syerskanal ⁇ flues.
- the Gasan ⁇ circuit and the liquid port are preferably disposed ⁇ at a common first end face of the nozzle body.
- the nozzle outlet is preferably located at a second opposite ⁇ opposite end face of the nozzle body angeord ⁇ net. In this way, simple, clear and easy to handle forms for the nozzle body and in ⁇ particular for the gas relatively simple flow ⁇ se in the nozzle body.
- the nozzle body with the gas channel and the liquid channel as a whole is made in one piece in particular by 3D printing.
- 3D printing or other additive manufacturing processes are particularly suitable for the manufacture of the nozzle body.
- a nozzle device includes at least one of the two-fluid nozzles as described above, at which the due ⁇ senvoriques also includes a fan which is adapted to supply the nozzle with gas.
- the blower Preference ⁇ wise, the blower generates a pressure ratio of the gas ⁇ pressure at the mouth of the gas channel in the flow space to the pressure at the suction side of the fan of a maximum of 1.3.
- the pressure at the mouth of the gas channel is increased in the flow space with respect to the pressure on the suction side by a maximum of 300 mbar.
- a method of operating a two-fluid nozzle in particular a two-fluid nozzle having the features described above, comprising the following steps:
- the two-fluid nozzle is supplied fluid via a liquid ⁇ keitskanal.
- the liquid is ejected from the liquid ⁇ keitskanal in a flow space.
- the discharge takes place from an outlet opening in a liquid outlet direction.
- Gas is also supplied to the flow space.
- a gas flow direction is fixed.
- the liquid outlet takes place in a direction which differs from the gas flow direction.
- the liquid exit direction and the gas flow direction are opposite to each other.
- the fluid entering the flow space is beauf beat ⁇ with the gas.
- the liquid ⁇ ness is deflected and form a liquid film which flows in a direction opposite to the liquid discharge direction of the flow direction to a nozzle outlet.
- the liquid is discharged from the nozzle body through the nozzle outlet.
- the gas is allowed to flow past the surface of the liquid film.
- the liquid film is transported toward the nozzle outlet and can be excited au ⁇ ßerdem to vibrations and wave formation, which atomization outside the nozzle body för ⁇ changed.
- the ejection of the liquid from the liquid channel into the flow space preferably takes place through a narrow outlet slot or gap.
- the ejection is thereby linear and preferably the gas flow entge ⁇ genforce.
- the linear ejection may occur along an arc along the circumference.
- the line-like ejection takes place from a least from ⁇ sectionally curved, serpentine or convoluted, preferably spiral-shaped gap or slot which is curved about the gas flow direction, so that even when ge ⁇ ringer slot or gap width sufficient From ⁇ exit surface for the Liquid is provided.
- the linear ejection of the liquid takes place at the end face of the guide body, which contains the liquid channel.
- a liquid ⁇ keitsmenge the liquid passage is supplied so that the cross section of the liquid ⁇ keitskanals is preferably completely filled with liquid ⁇ .
- the liquid channel is also constantly cleaned by the liquid, and the risk that dirt particles settle on the channel walls, is reduced.
- the feeding of the gas with the aid of a blower occurs whose From ⁇ gear is connected via a line to the gas port of the flow ⁇ period.
- FIG. 1 shows a two-fluid nozzle according to the invention in a simplified perspective view
- FIG. 2 shows a perspective sectional view of the two-component nozzle from FIG. 1, in a simplified representation
- FIG. 3 shows a longitudinal view of the two-component nozzle from FIGS. 1 and 2, in perspective view and in longitudinal section,
- FIG. 4 shows a section from the longitudinal sectional view from FIG. 3,
- FIG. 5 shows a nozzle device with a two-fluid nozzle and a fan, in a schematic representation
- Figure 6 shows a method of operating a two-fluid nozzle according to the invention, in the form of a highly simplified flow chart
- FIGs 7a-7f planar views of exemplary courses of the liquid channel and the outlet opening of a two ⁇ material nozzle according to different embodiments of the invention, in a highly schematic diagram.
- the two-fluid nozzle 10 shown in Figure 1 comprises egg ⁇ NEN nozzle body 11 which is substantially cylindrical.
- the nozzle body 11 has a first end face 12 and a preferably flat second end face 13.
- a gas connection 14 and a flues ⁇ stechniksan gleich 16 is arranged (see FIG. 5).
- a nozzle opening or a nozzle outlet 17 is arranged at the two ⁇ th end face 13 of the nozzle body 11.
- the nozzle outlet 17 is an outlet slot or narrow outlet gap which is wound around the cylinder axis Z by more than two complete revolutions into a plane spiral.
- Figure 2 shows a longitudinal section through the nozzle body 11.
- a Gaska ⁇ nal 18 connects to the end face 12 at.
- the gas channel 18 is cylindrical We ⁇ sentlichen and is bounded by the cylindrical wall 19 of the nozzle body.
- the nozzle body 11 has a flow space 21, which is also delimited by the cylindrical wall 19 of the nozzle body 11.
- the gas channel 18 opens inside the nozzle body 11 axially into the flow space 21.
- a spiral wall 22 is arranged in the flow space 21.
- the flow space 21 is replaced by the spiral wall 22 in the form of a spiral arm.
- the central axis Z of the spiral is parallel to the cylinder axis Z or coincides with this.
- the flow space 21 adjoins the gas channel 18 with a flat, axially open inlet side 23.
- the A ⁇ inlet side 23 of the flow space 21 constitutes an open end which faces the end face 12 to which the gas channel 18 is connected to the gas connection fourteenth
- the flow space 21 is radially divided by the spiral wall 22, in the circumferential direction U, however, open, continuous and unbranched.
- the flow space 21 formed in FIG. 2 by a single spiral arm can also be formed by at least two spiral arms.
- the flow space 21 may alternatively have, for example, a plurality of concentric cylin ⁇ derringförmige spaces having radial Strömungsver ⁇ compounds and divide the gas flow radially and in the circumferential direction U.
- the flow space 21 has a front portion 24 and a rear portion 26.
- the front portion 24 adjacent to the inlet side 23 and has a ent ⁇ long the cylinder axis Z constant radial Spiralarmford H.
- the rear portion 26 connects to the front portion 24.
- the spiral arm height H gradually decreases toward the nozzle outlet 16.
- the flow space 21 tapers radially overall.
- the spi ⁇ ralförmige Düsenauslassschlit z 17 connects.
- a liquid channel 27 is arranged.
- To the liquid channel 27 includes a Zumoni ⁇ tion section 28 which is arranged on the wall 19 of the nozzle body 11.
- the feed section 28 extends parallel to the cylinder axis Z, starting from the first end face 12 of the nozzle body 11.
- the feed section 28 has a feed channel wall 29. From the Zumoni ⁇ reasoning section 28 branches off transversely to the cylinder axis Z in the circumferential direction U on the one hand, the spiral wall 22 and on the other hand, ⁇ radially spaced therefrom an outlet portion 31 of the liquid channel 27 from.
- the outlet section 31 preferably has only two attachment points to, wherein a first attachment point 31a at the feed ⁇ portion 28 disposed and a second fastening 31 b arranged in the center of the nozzle body 11 and connected to the inner end of the spiral wall 22. Further fastening points, in particular webs between the spiral wall 22 and the outlet portion 31 can entfal ⁇ len, so that an unhindered gas and liquid flow is axially along the outside of the exit portion allows the 31st Axially, the exit section 31 extends from the front section 24 into the rear section 26.
- the outlet section 31 extends through the flow space 21 along the circumference of the nozzle body 11, so that a portion of the liquid channel 27 is surrounded by the flow space 21.
- the outlet section 31 has a first channel wall 32 and a second channel wall 33.
- the first channel wall 32 has a first Wandau touchflä ⁇ surface 34 and the second channel wall 33 has a second wall ⁇ outer surface 35, each considered along the cylinder axis Z, are spiral, so that the Aus SharePointsab ⁇ section 31 has the shape of a planar spiral ,
- the outlet section 31 has an outlet side 37. At the exit side 37, the first channel wall 32 and the second channel wall 33 are unconnected, so that radially between the first channel wall 32 and the second channel wall 33, a gap-shaped, contiguous outlet opening 38 is provided, which follows the course of the outlet portion 31.
- the outlet opening 38 is disposed at a distance from the A ⁇ inlet side 23 of the flow space 21 and facing the latter.
- the outlet opening 38 is oriented flat and transversely to the gas flow direction S.
- the outlet opening 38 here has in particular the shape of a planar spiral, which could also be designed as a three-dimensional spiral, so screw. Through the spiral form extends the outlet opening 38 along the circumference of the flow ⁇ space 17.
- the outlet opening 38 extends in particular arc-shaped along the spiral wall 22 and the wall 19 of the nozzle body 11. Due to the spiral shape, the outlet opening 37 also extending arcuately along the periphery of the flow space 21 along a path with up to ⁇ taking diameter reducing.
- the exit side 31 opposite side of the outlet portion 31 forms a separation side 39.
- the ⁇ starting section 31 tapers axially wedge-shaped toward the separation side 39 and the nozzle opening 17 and is in the wedge-shaped in the direction of the nozzle opening 17 rear portion 26 of the Flow space 17 angeord ⁇ net.
- the first wall exterior surface 34 and the second outer wall ⁇ surface 35 extending from the exit side 37 to the side relief face 39.
- the first wall outer surface 34 is oriented radially outward and the second wall outer surface 35 is oriented radially inwards.
- the first channel wall 32 and the second channel wall 33 are connected mitei ⁇ each other at the separation side 39 and form a trailing edge 40 for a liquid film 41, which flows along the channel walls 32, 33.
- the release side 39 or tear-off edge is arranged in the vicinity, at a distance from the nozzle outlet 17.
- channel walls 32, 33 thus together form a be ⁇ schreib a direction parallel to the cylinder axis Z longitudinal and plane of symmetry substantially symmetrical wedge shape or elongated teardrop shape, which is similar to an airfoil shape.
- FIG. 3 illustrates the one described above Two-fluid nozzle 10 in a longitudinal sectional view. Due to their orientation in the flow space 21, the outlet opening 38 defines together with the first passage wall 32 and the second channel wall 33 at the inlet side 23 an off ⁇ passage direction A of the liquid tight. This is oppositely directed to the flow direction S of the gas flowing from the first end face 12 to the second end face 13.
- the two-fluid nozzle described so far 10 with the SI ⁇ sen redesign 11, the gas passage 18 and the fluid passage 27 is preferably designed as a one-piece, integral body and may, for example, by an additive pro duction process ⁇ , in particular by 3D printing can be produced.
- the nozzle body 11 is preferably free of seams and joints and is made of a uniform material, preferably of plastic or metal. Although it is also possible to produce the nozzle body 11 by a plurality of separately manufactured and assembled parts, but this is less desirable, among other things, due to the greater expense and associated with seams and joints disadvantages.
- the dual-fluid nozzle 10 described above can be used for many applications, such as for humidifying or cooling objects in industrial production, for spraying water, and the like. In particular, it is suitable for use in facilities for dust deposition or gas cooling equipment.
- the two-fluid nozzle 10 is operated as follows, with the write-Be ⁇ refers to the figures 1-5:
- the two-fluid nozzle 10 is gas, for example Air, applied, which is offset by a fan in Strömungsbewe ⁇ tion.
- Figure 5 which shows an embodiment of a nozzle assembly 42 according to the invention in a simplified block diagram, as it has the two-fluid nozzle 10 and a fan 43, the Ge ⁇ blower 43 is connected to the gas port 14 at the end face 12 in the Gas channel 18 of the two-fluid nozzle 10 opens. Due to the relative arrangement of the gas connection 14 on the end face 12, the gas channel 18 and the flow ⁇ space 21 and the nozzle outlet 16 on the opposite ⁇ the end face 13, a gas flow direction S in the flow space 21 is fixed.
- a pump 44 is connected to the liquid connection 16 at the first end face 12 of the nozzle body 11, where ⁇ at the liquid connection 16 with the Zu Adjustsab ⁇ section 28 of the liquid channel 27 is connected.
- the pump 44 pumps water from a fluid supply 46, so that the two-fluid nozzle 10 with liquid, in ⁇ play, water, fed.
- ⁇ sen are sufficiently bemes ⁇ sen, preferably be at least 2 mm, so that even contaminated with water for the feeding of the two-fluid nozzle 10 can be used without a merkli ⁇ che danger of clogging of the two-fluid nozzle 10 is.
- the liquid flows along the first section 28 Zumoni ⁇ approximately 31 into the outlet portion within the exit portion 31 the liquid flows along the circumferential direction U perpendicular to the cylinder axis Z to the gas stream S.
- the discharge section 31 therefore a Ka ⁇ nalcardi determines K, in which the liquid flows in the off ⁇ takes portion 31 and which is oriented transversely to the gas flow ⁇ direction S. This is indicated in Figure 3 by the symbols " ⁇ " and ,, x ", the flow out of the drawing plane or into the drawing plane symbo ⁇ taping.
- the liquid is discharged at the outlet side 37 of the off ⁇ passage section 31 through the gap-shaped outlet opening 38 line-shaped in the front portion 24 of the flow space 17 in the outlet direction A. Due to the arrangement of the outlet opening 38 with respect to the first end face 12, in which the gas channel 18 opens into the flow space 21, the outlet direction A of the gas flow direction S is opposite.
- the guide body 36 divides the flow space 21 and the liquid flow outside the liquid channel 27 radially, so that the liquid ⁇ speed the guide body 36 on two sides, on the in the figures upper, first wall outer surface 34 and the lower, second outer wall surface 35, flows around.
- the liquid flow outside the liquid passage 27 is be butterge ⁇ dividing evenly.
- the flowing liquid on the upper surface ⁇ to the nozzle outlet 17 gas then drives the liquid film 41 toward in the gas flow direction S to the nozzle outlet 17th
- the liquid film 41 is also supplied with the gas in such a way that the liquid film 41 is additionally excited to oscillate. This may already lead to a pre-atomization of the liquid films 41, while they flow together with the partial gas flows over the wall outer surfaces 34, 35 on the guide body 36 to the release side 39.
- FIG. 6 figure illustrates an Ab ⁇ output diagram of a general method 50 for operating a two-fluid nozzle according to the invention, which can be applied in particular to the two-fluid nozzle 10 according to FIGS. 1-5.
- the method 50 begins with the supply of liquid ⁇ keit to a two-fluid nozzle, for example, the two-fluid nozzle 10, via a fluid channel (eg 27), as illustrated in step 51.
- a fluid channel eg 27
- gas is supplied into the flow space in a gas flow direction S (step 53).
- the Gasströ ⁇ flow direction S is different from the diesstechniksaus ⁇ passage direction A, and to this is preferably Chryslerge ⁇ .
- the liquid entering the flow space is supplied with the gas flow so as to deflect the liquid and form a liquid film (e.g., 41) which flows in a flow direction S opposite to the liquid exit direction A to a nozzle outlet (e.g., 17) (step 54). Due to the gas flow, the liquid film can already be pre-atomized to a certain extent.
- the liquid is discharged through the Düsenaus ⁇ let out of the two-fluid nozzle to the outside.
- the liquid is atomized by the gas flowing practitionerge ⁇ torn and fine.
- the output can such SUC ⁇ gen that the liquid emerging slightly conical outwardly spreads frusto-shaped, which further supports the atomization.
- the supply of the gas into the flow space takes place with a blower (for example 43).
- a blower for example 43.
- the use of expensive compressors can be dispensed with.
- the ejection of the liquid from the liquid channel into the flow space takes place in a linear manner through a narrow exit gap, preferably a spi ⁇ ralförmig wound exit gap.
- the exit slit can also run in other ways, at least in sections, curved , wound or tortuous. In any case, as long as possible exit gap maraf ⁇ fen, and the emerging from the exit slit liquid can be effectively applied and deflected as needed
- FIGS. 7a-7f show exemplary courses of fluid channels 27 with associated outlet openings 38 according to different embodiments of the invention. Shown are plan views which result from the projection of the liquid passages 27 and from ⁇ openings 38 ekomsebene a Pro transversely through the flow space 21 and substantially perpendicular to the exit direction A (see FIG. 2) of the liquid from the outlet opening 38 extends , Although the limited width of the gap-shaped outlet openings 38 In the projection on the pro etechnischsebene results band-shaped waveforms, these are shown here for easy and clear illustration by thin lines.
- FIG. 7 a shows the projection line of the spiral-shaped liquid channel 27 with the outlet opening 38 of the preferred embodiment shown in FIGS. 1 to 3.
- the spiral shape can result from a flat spiral or a helical course of the liquid channel 27.
- a curved arc portion can optionally, for example, a circle or a spiral, which preferably subtends an angle of at least 90 °, more preferably 180 °, genü ⁇ gen Particularly advantageous is an extension over we ⁇ tendonss one revolution (at least the 360th °) or even over two revolutions.
- FIG. 7b shows a meandering or meandering shape of a liquid channel 27 with the outlet opening 38, which has a plurality of here four loops 61 which are rotated by an angle of 90 ° about a central center axis of the flow space 17 turns and connected with each other.
- Loops 61 and the twist angle can be chosen differently.
- Slings 62, 63 are formed, which are arranged in a direction transverse to each other through the flow space 21 and connected to each other.
- Figures 7d-7f show further embodiments, in each of which have the spiral, star-shaped or serpentinenför--shaped profiles of the liquid channels 27 and the outlet openings 38 ⁇ a plurality of straight sections 64 with interposed curved or bent connection portions 65th
- the gradients may be two- or three-dimensional.
- advantageously egg ⁇ ne expanded, coherent, without sharp waveform is obtained with a projection line which passes through or spans a large part of the flow space 17 and the projection plane.
- the large length of the liquid channel 27 and the outlet opening 38 makes it possible to leave a sufficient amount of liquid in the form of an extended, uniform, thin liquid film from the outlet opening even with a very limited gap width and then effectively to atomize.
- the outlet of the nozzle 10 forming the nozzle opening 17 preferably has a substantially same shape as the projection line of the liquid passage 27 and the off ⁇ opening 38, but can also be different therefrom.
- the flow space 21 may have any preferably cylindrical or tubular shape with one, for example circular, oval, square, rectangular or any other suitable cross-section.
- the two-component nozzle 10 has a nozzle body 11 which delimits a flow space 21.
- the two-component nozzle 10 also has a fluid channel 27 with an outlet opening 38.
- a liquid film 41 is formed, which is transported by the gas flow within the flow space 21 to the Düsenaus- outlet 17.
- the outlet opening 38 of the liquid channel 27 defines an outlet direction A for the liquid in the flow space 21, which is preferably the ent ⁇ direction of the Strö ⁇ tioning direction S of the liquid film 41 ⁇ .
- the flues ⁇ stechnikskanal 27 and its outlet opening 38 extend at least partially curved, or tortuous wound transversely through the nozzle body. 11
Landscapes
- Nozzles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
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PCT/EP2014/071692 WO2016055116A1 (de) | 2014-10-09 | 2014-10-09 | Zweistoffdüse |
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US (1) | US10471448B2 (de) |
EP (1) | EP3204167B1 (de) |
JP (1) | JP6442048B2 (de) |
CN (1) | CN106999965B (de) |
AU (1) | AU2014408517B2 (de) |
CA (1) | CA2963017C (de) |
ES (1) | ES2796227T3 (de) |
WO (1) | WO2016055116A1 (de) |
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FI20175158L (fi) | 2017-02-21 | 2018-08-22 | Metabar Tech Oy | Suutin, suutinjärjestely ja nesteenjakojärjestelmä |
CN109621757A (zh) * | 2018-12-17 | 2019-04-16 | 邹权明 | 水下水气混合器 |
CN109877260B (zh) * | 2019-03-21 | 2023-11-03 | 中信戴卡股份有限公司 | 一种模具润滑剂旋转喷盘装置 |
CN109821674A (zh) * | 2019-03-21 | 2019-05-31 | 中信戴卡股份有限公司 | 一种模具润滑剂旋转喷涂喷盘装置 |
CN111940159B (zh) * | 2019-05-14 | 2023-05-26 | 沈阳芯源微电子设备股份有限公司 | 一种晶圆表面颗粒清洗双旋喷嘴 |
SE546027C2 (sv) * | 2019-11-19 | 2024-04-16 | Brokk Ab | Fjärrstyrd demoleringsrobot med en anordning för dammbekämpning med hjälp av en vätska vid rivningsarbete samt ett förfarande för dammbekämpning vid en sådan demoleringsrobot |
Family Cites Families (19)
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FR1008377A (fr) * | 1950-01-14 | 1952-05-16 | Perfectionnement apporté aux systèmes de pulvérisation des liquides au moyen d'un fluide gazeux sous pression | |
GB958100A (en) * | 1955-09-14 | 1964-05-13 | Chiselhurst Inc | Improvements in or relating to apparatus and method for generating aerosols |
JPS4718585Y1 (de) * | 1967-08-31 | 1972-06-27 | ||
JPS4733653Y1 (de) * | 1968-06-19 | 1972-10-11 | ||
US4063686A (en) * | 1976-03-15 | 1977-12-20 | Fuller Company | Spray nozzle |
DE3144562A1 (de) | 1981-11-10 | 1983-05-26 | Marcel 68390 Sausheim-Battenheim Blanchard | Verfahren und vorrichtung zur herstellung eines gas-fluessigkeitsgemisches |
DE4128670A1 (de) * | 1991-08-29 | 1993-03-04 | Ike Inst Fuer Kerntechnik Und | Verfahren und vorrichtung zum zerstaeuben einer fluessigkeit |
ES2143512T3 (es) | 1992-10-13 | 2000-05-16 | Alan Patrick Casey | Dispositivo mezclador gas-liquido. |
US5553785A (en) * | 1995-01-10 | 1996-09-10 | Spraying Systems Co. | Enhanced efficiency apparatus for atomizing and spraying liquid |
JP2004237282A (ja) * | 2003-01-16 | 2004-08-26 | Kyoritsu Gokin Co Ltd | 二流体ノズル |
WO2006108740A1 (en) | 2005-04-08 | 2006-10-19 | Huntsman International Llc | Spiral mixer nozzle and method for mixing two or more fluids and process for manufacturing isocyanates |
DE102005021650A1 (de) | 2005-05-06 | 2006-11-09 | Wurz, Dieter, Prof. Dr.-Ing. | Verfahren und Vorrichtung zur Optimierung von Zweistoff-Düsen |
DE102005048489A1 (de) * | 2005-10-07 | 2007-04-19 | Dieter Prof. Dr.-Ing. Wurz | Zweistoffdüse mit Ringspaltzerstäubung |
BE1017673A3 (fr) | 2007-07-05 | 2009-03-03 | Fib Services Internat | Procede et dispositif de projection de matiere pulverulente dans un gaz porteur. |
US8807458B2 (en) * | 2009-04-29 | 2014-08-19 | King Saud University | Vortex-generating nozzle-end ring |
CN102574140A (zh) | 2009-08-26 | 2012-07-11 | 拜尔材料科学股份公司 | 制造反应性塑料喷涂层的方法和设备 |
CN102580874A (zh) | 2012-03-05 | 2012-07-18 | 河南天丰节能板材科技股份有限公司 | 一种高压混合对冲装置 |
JP5980088B2 (ja) * | 2012-10-23 | 2016-08-31 | 花王株式会社 | 3dプリンタ造形物用現像液組成物、3dプリンタ造形物の現像方法、及び3dプリンタ造形物の製造方法 |
JP5966938B2 (ja) * | 2013-01-15 | 2016-08-10 | コニカミノルタ株式会社 | 立体物造形装置及び立体物造形方法 |
-
2014
- 2014-10-09 AU AU2014408517A patent/AU2014408517B2/en active Active
- 2014-10-09 CN CN201480082582.0A patent/CN106999965B/zh active Active
- 2014-10-09 CA CA2963017A patent/CA2963017C/en active Active
- 2014-10-09 US US15/517,754 patent/US10471448B2/en active Active
- 2014-10-09 ES ES14783810T patent/ES2796227T3/es active Active
- 2014-10-09 EP EP14783810.6A patent/EP3204167B1/de active Active
- 2014-10-09 JP JP2017519326A patent/JP6442048B2/ja active Active
- 2014-10-09 WO PCT/EP2014/071692 patent/WO2016055116A1/de active Application Filing
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CN106999965B (zh) | 2020-01-17 |
CN106999965A (zh) | 2017-08-01 |
CA2963017C (en) | 2021-07-27 |
WO2016055116A1 (de) | 2016-04-14 |
EP3204167B1 (de) | 2020-05-06 |
AU2014408517B2 (en) | 2020-05-21 |
WO2016055116A8 (de) | 2017-04-27 |
CA2963017A1 (en) | 2016-04-14 |
ES2796227T3 (es) | 2020-11-26 |
US10471448B2 (en) | 2019-11-12 |
US20170304850A1 (en) | 2017-10-26 |
JP2017531553A (ja) | 2017-10-26 |
JP6442048B2 (ja) | 2018-12-19 |
AU2014408517A1 (en) | 2017-05-25 |
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