CN101346186A - Nozzle with impinging jets - Google Patents

Nozzle with impinging jets Download PDF

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Publication number
CN101346186A
CN101346186A CNA2006800468301A CN200680046830A CN101346186A CN 101346186 A CN101346186 A CN 101346186A CN A2006800468301 A CNA2006800468301 A CN A2006800468301A CN 200680046830 A CN200680046830 A CN 200680046830A CN 101346186 A CN101346186 A CN 101346186A
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nozzle
parts
fluid
passage
jet
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CNA2006800468301A
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Chinese (zh)
Inventor
安诺斯·E·延森
克里斯蒂安·博
尼尔斯托尔普·马森
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Emitec Denmark AS
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Grundfos Nonox AS
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Publication of CN101346186A publication Critical patent/CN101346186A/en
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Abstract

The present invention relates to a nozzle for atomization of one or more fluids by letting two streams of fluid impinge. In a nozzle according to the invention the fluid is divided in a number of streams each given kinetic energy. The amount of kinetic energy given to streams is so that when the streams impinge at conditions where substantial opposite directed velocity components of the streams exist the streams will break up into a spray having a small droplet size.

Description

The nozzle that impacting jet is arranged
In the present invention, a kind of nozzle that is used for one or more fluid atomizings is assembled by a plurality of different elements, and its embodiment that can be combined to multiple customization is to satisfy special demand.Therefore, the present invention also proposes several different methods to different aspect, and still belongs to identical inventive concept.
The present invention relates to a kind of by making the nozzle of two kinds of one or more fluids of fluid jet collision atomizing.In nozzle of the present invention, fluid is separated into many jets of giving kinetic energy.Giving the kinetic energy size of jet, is to make that jet will resolve into the spraying with small drop sizes when jet collides under the condition of the relative substantially directed velocity components existence of jet.In this article, this is called atomizing.If purpose is to provide a kind of good atomizing, each jet of fluid is mutually in middle heart " collision ", and for example, two jets of fluid are that atomization process is necessary in same plane.Further, the mass flow of jet and the balance between the speed should present so that a kind of spraying of balance to be provided.
First purpose of the present invention provides a kind of nozzle that is used for the atomizing of one or more fluids, and it is having better control aspect accuracy of colliding fluid and the timing (timing).
The present invention equally also relates to use and pressure is brought up to above the method for general work pressure is washed described nozzle.It is preceding with fluid purification or filtration to be preferably in atomization steps, and making does not have foreign material to bring nozzle into by fluid.Yet, when nozzle begin by around foreign material depositions as crystal etc. when stopping up, can carry out a step of washing or cleaning described nozzle of the pressure by the increase pressure fluid as described in the present invention.The pressure that increases can force foreign material to pass or mass flowing nozzle easily, perhaps causes fluid over-flow foreign material and near zone thereof.Therefore, fluid jet also can sweep across or take away any foreign material, during perhaps the overflow fluid that can make foreign material be dissolved into guiding nozzle rinse or cleaning flows.Therefore, be to increase the dynamic function that produces from rinsing step by possible pressure, in nozzle operation under general condition, this does not take place.
Therefore, another object of the present invention provides a kind of nozzle that higher reliability is arranged and can finish the self-cleaning step.
Therefore, aspect first, nozzle comprises first parts of the present invention, it has surfaces A and fluid inlet and fluid issuing, at least when nozzle is pressurized, two or many passages can be in the surperficial B of the described surfaces A and second parts or between form, second parts cover first parts.
Nozzle has first parts, and these parts have surfaces A.Described first parts also have fluid inlet and fluid issuing.Article two, or many runners can be arranged on surfaces A the flowing of first parts with the guiding fluid.Fluid inlet preferably is made up of an inlet openings, and preferably it is connected with a pipeline with the direct fluid fluid issuing, yet according to demand, any amount of opening and/or pipeline can be provided with.Fluid issuing is that fluid is communicated with described two or many passages, and also can be made up of any amount and shaped aperture.First parts can have outer shape arbitrarily, but are preferably rectangle.Nozzle also has second parts, and it has surperficial B and covers first parts.It is corresponding with the shape of first parts that the shape of second parts is preferably.All elements in the nozzle also have the shape that customization is shaped certainly, for example, it are transformed in more existing equipment.
Guiding two fluid jets just in time is that mutual " bump " is very important for realizing best atomizing in same plane.Jet by two or many s' channel design guiding in (x, y) (see figure 3) on the direction.In order to realize the accurate control of convection cell on (z) direction, importantly the B surfaces of the A of first parts surface and second parts very upright and outspoken/hard and substantially flat.
In a specific embodiment, passage is at least two polymerizations and open passage, and is communicated with the fluid issuing fluid, and the opening part at passage promotes each fluid jet to keep speed and the volume flow that equates simultaneously.
When nozzle is provided with two or more passage, these polymerizations and be configured such that they promote the phase uniform velocity and the volume flow of each bar fluid jet at the access portal place.This can be provided with, for example, if passage just in time is to be connected around identical length and the outlet that is arranged on first parts with strict symmetrical relation and/or with the outlet of first parts.It is accurate that the flowing velocity of fluid jet and volume " are sent " to run foul of each other in access portal, and correct timing is the requirement that reaches best atomizing effect.Therefore, as long as aforesaid standards when reaching, can provide the passage of difformity and size.In addition, designs of nozzles is necessary according to the present invention, and the surface of all passages and/or the surface of peripheral region are sharp, promptly has the tangible edge at basic right angle, to obtain the mobile necessary control of carrying out of convection current body fluid flow.Therefore, the location and the timing of fluid stream collision are further optimized, and this just generates the fluid jet that is fit to and optimize successively and atomizes.Yet, when these standards do not satisfy fully, can not realize that fluid jet collides, and for example causes the decline of nozzle performance apart from the nozzle certain distance in same plane.
First and second parts can preferably be made up of robust material, for example metal, plastics or pottery.First second parts can be all bigger than the thickness of other any parts in the nozzle.Except may be in the surfaces A of first parts two or many passages, this surface be continuous substantially.
Other surface of first second parts and other parts of nozzle and element can have optional preferred profile and profile.
In the simplest form, nozzle constitutes by having two of being arranged in the surfaces A or first parts and second parts of many passages.In this embodiment of nozzle, by pressure being applied to flowing of fluid, will the flow through opening of the passage in the side of first parts of fluid jet, and for example colliding from a distance, nozzle side according to previous indication.
In the embodiment that another one has been optimized, described two or many fluid passages are set in place in the channel spacer between the surperficial B of the surfaces A of first parts and second parts.In this embodiment, the surfaces A of first parts and second parts and surperficial B can be preferably continuous substantially and smooth.Described channel spacer preferably can be for example metal, plastics, resin, fiber, pottery or the independently laminar film that is fit to material arbitrarily of combination arbitrarily.
In a preferred embodiment, nozzle further comprises one at the surfaces A of first parts and second parts and the elastomeric element between the surperficial B.
Described elastomeric element can be arranged between first parts and second parts of nozzle.In a special embodiment, two of described nozzle or many passages can be arranged in the surfaces A of first parts, and one or more groove can be arranged in the surperficial B of second parts simultaneously.Exert pressure by convection cell, described elastomeric element can move on to away from surfaces A one segment distance, thereby the guiding fluid is between the surface of the surfaces A of first parts and elastomeric element, owing to one or more groove of described second parts provides the space when elastomeric element is applied in pressure.Therefore, even passage is not set in the elastomeric element, described nozzle still can atomize by convection cell.Described elastomeric element is preferably the independently laminar film of the material of for example metal, plastics, resin, fiber, pottery or other a rubber-like material that is fit to arbitrarily or any combination.
In a preferred embodiment, described nozzle further comprises the retention tab parts that are arranged between the elastomeric element and second parts.Described retention tab parts can be preferably another one independently for example metal, plastics, resin, fiber, pottery or the laminar film or the layer of any suitable material of combination arbitrarily.Described retention tab parts can have a continuous surface or it can be provided with one or more cut-out parts, depend on operating characteristic for example volume flow and speed and/or nozzle accuracy or be used for the needed pressure of cleaning step overflow.Have the retention tab parts that cut off parts by providing, determine that the pressure of size will force elastomeric element to press to the retention tab parts, and the retention tab parts so allow fluid to pass through because the effect of fluid pressure engages.Described retention tab parts also can be by precompressed by being applied in a tension force, for example when the assembling nozzle, by bending by cutting off part that parts limit to engage the surface of elastomeric element.By using this method, can control the motion of elastomeric element, because need to determine that the fluid pressure of size is to overcome the pretension of described retention tab.Therefore the accuracy of Fluid Volume that is supplied and final atomizing can obtain the control on the certain degree.
In the specific embodiment in the present invention, one or more grooves that can have any desired configuration and size can be arranged in the surperficial B of second parts and/or in a re-entrant part.Set groove is to improve described retention tab parts and/or elastomeric element in order to be beneficial to by fluid pressure.Described groove can have any suitable profile and size.Re-entrant part also can be preferably by the material of any appropriate, and for example metal, plastics, resin, fiber, pottery or any combination constitute.
Various element can preferably have one or more holes to hold one or more predetermined guiding pieces of controlling the position of each element with correct Rankine-Hugoniot relations in the nozzle.But described hole and guiding piece can have the shape of any appropriate be preferably circle.Described parts also are preferably has one or more holes to hold one or more suitable holding members, and bolt for example is can firmly and closely being assembled into one each assembly of nozzle arrangements.
In a preferred embodiment of the invention, described two passes at least can be set to make the fluid jet that flows through passage to run foul of each other outside nozzle.Selectively or in combination at this, described two passes at least can preferably be set in nozzle, intersect at nozzle face and/or above nozzle face, makes the fluid jet that flows through passage run foul of each other at end face and/or above end face or at least partially in nozzle.Described passage is preferably the polymerization passage.
In a preferred embodiment of the invention, described passage is provided so that preferably the fluid jet that flows out runs foul of each other with the angle between 30 ° and 100 ° from two passes at least.
Typically with preferably, the cross-sectional area of every the fluid jet that from passage, flows out preferably can for 0.003 to 0.15mm 2Between, preferably 0.005 to 0.05mm 2Between, for example 0.01 to 0.03mm 2Between, be preferably 0.02mm 2
Second aspect the present invention relates to comprising of a kind of one or more fluids that atomize of two or more nozzle systems as the described nozzle of first aspect present invention.
According to second aspect, comprising of any amount and/or structure partly or entirely aforementionedly mentioned to such an extent that the individual nozzle of element can be by " assembly unit ", for example, and in order to increase volume flow or to make fluid jet for example apart from the collision more at a distance of nozzle side.Under other situations, desired is, can regulate the state of atomisation and " cloud " by changing angle between two or many fluid jets.If described system also may be constructed to and play the effect of openable excess pressure valve when needing, thereby it is flexible to produce increased dynamic.
In the third aspect, the present invention relates to a kind of gas extraction system of internal combustion engine, described system comprises according to nozzle of the present invention and/or nozzle system.
In fourth aspect, the present invention relates to a kind of method of atomizing fluids, preferably this fluid is a liquefied urea, described method is used according to nozzle of the present invention and/or nozzle system.
Consider solution very special and that customization is shaped according to the multiple possible structure of the present invention first and second aspects.Acquisition is to control easily and some special advantages of the geometry of nozzle, and this permission has precisely and rightly the needed volume of liquid regularly to be supplied with.
Fig. 1 is the perspective view with nozzle of first and second parts, and is presented at one or more passage on the surfaces A of first parts.
Fig. 2 is the nozzle perspective view that has first and second parts and have the channel spacer between the two.
Fig. 3 is the nozzle perspective view with first and second parts and the elastomeric element between the two, is presented at one or more passage and the groove on the surperficial B of second parts on the surfaces A of first parts.
Fig. 4 has first and second parts and has channel spacer between the two and the nozzle perspective view of elastomeric element.
Fig. 5 has first and second parts and has channel spacer and the nozzle perspective view of elastomeric element and the retention tab parts between second parts that have groove on first parts and its surperficial B.
Fig. 6 comprises an independently nozzle perspective view of re-entrant part on Fig. 5 basis.
Fig. 7 does not have passage still to have the nozzle perspective view of a groove on the surperficial B of second parts.
Fig. 8 is that each assembly of diagram nozzle is the nozzle perspective view that how to lead and assemble in more detail.
Fig. 9 is the nozzle system schematic diagram that comprises two channel spacer and a bonded block according to second aspect present invention.
Figure 10 is the schematic diagram of nozzle assembly, wherein, in all parts of assembly passage is set all.
Figure 11 and Figure 12 are the schematic diagrames according to channel spacer of the present invention.
Figure 11 b and Figure 12 b are presented at Figure 11 a with indication flow pattern details and the close up view of the channel spacer among Figure 12 a.
Figure 13 and Figure 14 are the schematic diagrames according to channel spacer of the present invention.
Fig. 1 is the perspective view of a specific embodiment of the present invention, wherein is provided for the passage (10) that guides fluid to flow in first parts (1).Described passage (10) partly extends through first parts (1), and is communicated with fluid issuing (9) fluid of first parts.Passage (10) is open, means that their aggregation port ends at the surface of first parts (1) (20).Surface (20) is flat as shown in the figure substantially, but also can comprise the groove of one or more any desired configuration, and is for example crescent.In this embodiment, described fluid flows through passage (10) atomizing from opening a distance of passage collision the time at two fluid jets (fluid streams).
Fig. 2 is the perspective view of a specific embodiment, and a channel spacer (2) is arranged between first parts (1) and second parts (4) in this embodiment.Described channel spacer (2) is provided with and is used for the passage (10) that guiding liquids flows.Described passage (10) partially or completely extends through channel spacer (2) (as shown in FIG.), and is communicated with fluid issuing (9) fluid of first parts (1).Described passage (10) is open, and their aggregation port ends at a side of channel spacer (2).Other surface of parts (1,2,4) is flat as shown in the figure substantially.
Fig. 3 is the perspective view of another one embodiment of the present invention, and one of them elastomeric element (3) is arranged between first parts (1) and second parts (4), and is provided with the passage (10) that the guiding fluid flows in first parts (1).Described passage (10) partly extends through first parts (1), and is communicated with the fluid issuing fluid of first parts.Described passage (10) is open, and their aggregation port ends at the surface (20) of first parts (1).Surface (20) is flat as shown in the figure substantially, but also can comprise the groove of one or more any desired configuration, and is for example crescent.The surperficial B of described second parts (4) has a groove (35) that the space is provided when needed for elastomeric element (3) as shown in the figure.The main surface of described elastomeric element (3) is flat as shown in the figure substantially.
In this embodiment, when described two kinds of fluid jets through passage (10) and atomizing when colliding from access portal a distance under the general work pressure.If the passage of nozzle stops up the deposition depend on the foreign material in the environment around, so existing embodiment relies on the pressure of fluid that will pressurization to be increased to a high pressure that is higher than general work pressure, the step that can clean or wash.Through such high pressure, described elastomeric element (3) will be forced to passage (10) away from first parts (1) and enter groove (35) space in second parts (4), therefore allow the foreign material between the surface (21) of the surfaces A of fluid over-flow first parts and elastomeric element.The overflow of these foreign material and near zone causes fluid jet to wash or take away all foreign material off, therefore cleans or washed nozzle.Subsequently, when pressure returns to general work pressure, nozzle will atomize with general speed and precision convection cell again.Except finishing the flushing of nozzle member, such pressure increase also can increase the volume flow of nozzle when needed.
If although the involuntary property obstruction (for example increasing pressure at interval with preset time) of jet element takes place in the conventional step of safeguarding, so pressure because reduce pass through possibility and can increase automatically.This causes fluid to begin to make the surperficial overflow of foreign material and/or each component ambient, thereby removes tamper.In case foreign material are eliminated, pressure will fall back to its denominator again.
Fig. 4 is the perspective view of the other embodiment of the present invention, and one of them channel spacer (2) is arranged between first parts (1) and the elastomeric element (3).Described channel spacer (2) is provided with the passage (10) that the guiding fluid flows.The surface of independent component is flat as shown in the figure substantially.Passage (10) in described channel spacer (2) partly or entirely extends through channel spacer (2), and described passage is communicated with fluid issuing (9) fluid of first parts (1).Described passage (10) is open, and their polymerization end ends in the side of described channel spacer.
Pressurized and when colliding when described two kinds of fluid jets of the passage of flowing through (10) from access portal a distance, fluid atomizing.With to about as shown in Figure 3 embodiment similar mode is described, the step of cleaning or the increase of volume can be finished by pressure is increased to above the high pressure of general work pressure.This will make elastomeric element (3) be forced to enter away from channel spacer (2) space of the groove (35) of second parts (4).Therefore the foreign material overflow between the surface (26) that allows fluid to make to be positioned at described channel spacer (2) and the surface (21) of described elastomeric element (3), thereby according to the aforementioned cleaning of mentioning or irrigation channel and/or increase volume flow.
Fig. 5 is the perspective view of another one embodiment of the present invention, and it is similar to embodiment shown in Figure 4, and the difference of the two is that Fig. 5 also has retention tab parts (5) between elastomeric element (3) and second parts (4).In the drawings, retention tab parts (5) have the recess that runs through (40) of the openend of two sides that end at retention tab parts (5).Part (41) at the described retention tab parts (5) between two recesses (40) combines along a line between two recesses with the part that retention tab parts (5) are left.
In the drawings, second parts (4) have a groove (35) on its surperficial B.Described groove (35) is configured to a part (41) space to retention tab parts (5).This considers that described part (41) is forced to away from elastomeric element (3) when fluid flow applies the pressure of an increase.If described pressure is increased to one during than the high high pressure of general work pressure, described fluid will begin the peripheral region on the surface (26) of overflow ducts (10) and channel spacer (2), this then forces described elastomeric element (3) to leave channel spacer (2) again, therefore on the part (41) of retention tab parts (5), apply a pressure, cause it crooked at least along a line between two recesses, and in the space of the groove (35) of shift-in second parts (4).
Fig. 6 except Fig. 6 comprises an independently re-entrant part (50), replaces being provided with the surperficial B of second parts (4) with groove corresponding to embodiment shown in Figure 5.
Fig. 7 is the perspective view of an embodiment of nozzle, and wherein, first parts (1) are provided with a fluid issuing (9) that is connected with fluid inlet (15) by conduit, and second parts (4) have a groove (35) on surperficial B.Therefore when fluid is pressurized, described elastomeric element (3) will be forced to the outlet (9) away from first parts, and what formed the shape that meets outlet (9) and/or groove (35) substantially is the mobile passage of fluid.In the drawings, groove (35) is for having the crescent of two polymerizations and open end (7).Described half moon-shaped groove (35) is round rising place (6), and the surface of described rising place (6) is mutually neat with the residue place of surperficial B.This embodiment considers the increase of volume of fluid but the atomizing accuracy the same with the embodiment of other description can not be provided.
In Fig. 7, the passage that pressurized fluid forms in the shape that flows through by outlet (9) and groove (35) and when colliding, fluid atomizing from openend (7) a distance.With to about other embodiment similar mode is described, pressure can be added to a high pressure that is higher than general work pressure for for example flooding nozzle.This will cause described elastomeric element (3) to be forced to away from surfaces A, thereby allow the fluid over-flow surface, and this not only promotes may washing of nozzle again, and promote the volume that fluid flows to increase.Subsequently, when pressure was reduced to the general work force value again, nozzle will be with general speed atomizing fluids again.When not having convection cell to exert pressure, by closing outlet (9) effectively, described elastomeric element (3) stops any pollution of the nozzle that the foreign material because of the nozzle surrounding environment cause at all.
Fig. 8 is a kind of perspective view of mode, wherein assembles each element of nozzle so that a kind of tight also nozzle arrangements of appropriately sealed to be provided.The different elements of nozzle has one or more holes to hold one or more guiding pieces for each position of components of control on correct Rankine-Hugoniot relations.Described hole and guiding piece can have the shape of any appropriate, but are circular shown in the figure.Described nozzle member also has one or more holes to hold holding device, is screw shown in the figure.Therefore, each element of nozzle can be assembled by a kind of mode firmly and closely.
Fig. 9 shows the schematic diagram of nozzle system, and wherein two channel spacer according to first aspect present invention are provided with a binding member.A nozzle system like this can comprise for example binding member (55) " shared " of first and second parts of nozzle of one or more quilts.In such binding member, fluid inlet can be set, conduit and outlet, this causes fluid to carry out atomizing more than a kind of fluid, just is divided into two " branches " or comprises that has a thin slice that for example is arranged on fluid guiding port between two channel spacer.Described fluid guiding port can be corresponding with the shape of the outlet (9) of first parts.Nozzle system impels the supply more than the liquid jet of two kinds of collisions, thereby a kind of selectable fluid atomizing can be provided.Many independently nozzle assemblies also can setting near each other to set up a nozzle system (not showing among the figure).
Figure 10 shows the schematic diagram of nozzle, and wherein all nozzle segments all are provided with the passage that two guiding fluids flow.Described first parts (1) and second parts (4) and channel spacer (2) have two passes as shown in the figure.Yet described passage also can be arranged among among described first and second parts and the channel spacer one, also can be arranged on first and second parts among both and do not adopt channel spacer.
Figure 11 a and 11b be to Fig. 2 in the schematic diagram of similar channel spacer (2).Described channel spacer (2) is designed to make two fluid jets that flow through passage (10) in the opening part collision near passage (10).When for example embodiment compared shown in Fig. 1, this was to reach by the distance delta between the opening that dwindles passage (10).In the embodiment shown in Figure 11, described distance delta has been reduced into opening and has been positioned at mutually closely approaching position, and only separated by the wall end (12) of an edge shape, and make two passes have the equal height place to intersect at end face (20) with channel spacer (2) by arranging fluid passage (10), shown in Figure 11 a and 11b, thereby flush nozzle.
Embodiment among Figure 11 is applied to the droplet that causes in atomizing especially along the spraying towards the direction of a side of nozzle and/or nozzle, and contra-injection just takes place.Such contra-injection may cause the electrodeposition substance on the nozzle in some passages (10) structure, the opening of those materials possibility blocking channels (10).In the embodiment shown in Figure 11, two openings of passage (10) are set in the spacer (2), such two fluid jets fully collide at passage (10) opening part, if generation contra-injection, deposition will be are only gone up and as the nozzle outside generation that refers to of Figure 11 a and Figure 11 b arrow Z place at end face (20).If contra-injection causes the opening of droplet admission passage (10), these passages flow through them by fluid and cause these droplets to be kept moistening by described absorption of fluids.Can find to have only the reverse liquid of minority to fail to be convened for lack of a quorum produces in the embodiment shown in fig. 11.
In the embodiment that two passes (10) intersects, present further advantage.In these embodiments, the jet that flows out from passage (10) will collide at least to a certain extended spot and passage always and produce thing, no matter whether described two passes (10) extends in same plane, therefore this nozzle does not intersect with described two passes and requires described two passes to extend in same plane substantially with the nozzle of other embodiment of the collision that guarantees fluid jet and compares, and is easier substantially.
Figure 12 a and Figure 12 b are the schematic diagrames to channel spacer (2) similar shown in Figure 11.In this embodiment, the position of two fluid jet collisions is moved further towards channel spacer, and the collision that moves on to two fluid jets is at least in part in channel spacer (2).This is provided with two passes (10) like that and provides by two passes being intersected at nozzle face (11) inboard shown in Figure 12 a and Figure 12 b.Like this, in this embodiment, the wall end (12) of edge shape be positioned in the channel spacer (2) apart from the △ place, this goes out from the cardinal principle level measurement of the end face of the end face (20) of channel spacer (2) or nozzle apart from △, because these two end faces preferably have roughly the same horizontal plane in these embodiment of the present invention.Occur within the nozzle owing to collide to small part, the droplet that leaves nozzle will have only the outside speed with respect to nozzle, and cause the contra-injection of deposition of the material at nozzle face place no longer to take place.Therefore, this reason droplet of being considered to leave nozzle only has outside spot speed.
In these two embodiment, passage (10) is set to cross aisle, and the crosspoint is on the end face or in nozzle.Basically only have and end face and the nozzle vertical speed of direction in addition owing to leave the droplet of nozzle, contra-injection has been avoided outside nozzle basically.If contra-injection produces in nozzle, for example in conjunction with the embodiment among Figure 12, the droplet of contra-injection is sprayed in the fluid of flow through passage 4a and 4b, avoids the droplet deposition of contra-injection thus.
End face described herein is a smooth plane.Yet described end face can have other shape, for example taper, circular or analogous shape.In conjunction with the embodiment of Figure 11 and Figure 12, crosspoint wherein is arranged in the plane and the exit region of end face.
Though the embodiment display channel spacer of Figure 11 and Figure 12, the collision that reduces distance delta and/or make the fluid jet principle in nozzle at least in part can be applied in the nozzle that the collision fluid jet is generally arranged.For example passage (10) for example can be arranged in the nozzle pipe clamp (so channel spacer no longer needs).An embodiment like this can be included as import and one or more outlet of nozzle input fluid, and the fluid jet that described outlet is set to flow out from one or more outlets runs foul of each other.Preferably a filter is set on the streamline of directed flow direction of flow nozzle, before fluid arrives the passage of nozzle it is filtered.Preferably described outlet is set to make the fluid jet that flows out from two outlets to run foul of each other between 30 to 100 ° of the angles, and one or more outlets are preferably formed by the clearing end in a hole, and described hole forms a fluid issuing passage that is communicated with the intake channel fluid.The cross-sectional area of every fluid jet that flows out from outlet 0.003 to 0.15mm 2Scope between, preferably 0.005 to 0.05mm 2Scope between, for example 0.01 to 0.03mm 2Scope between, preferred 0.02mm 2
Figure 13 and Figure 14 have shown other embodiment about channel spacer (2), and these embodiment generally are used in the nozzle, wherein, described passage (10) outside nozzle surface (20) (Figure 13) or in nozzle (Figure 14) intersect.In the embodiment shown in fig. 14, drop exit passageway (11) extends to the surface (20) of nozzle from the zone that two passages intersect.
The example of the possible the embodiment how accompanying drawing of foregoing description just constructs as nozzle member.Other of element in conjunction with in the accompanying drawings shown in to compare under the situation that does not change protection scope of the present invention be possible.The structure of the passage (10) that an example is connected with a channel spacer shown in being can be applicable in as shown in Figure 1 the nozzle arrangements.
The present invention can be applicable to multiple need purposes with fluid atomizing among.A kind of such application is that urea is added in the discharge gas of the internal combustion engine of diesel engine for example.Make the concrete system of such atomizing preferably include one preferably according to the internal combustion engine of the principle work of diesel engine, a jar (for example known brand name AdBlue Din norm 70070) of depositing urea liquid, and a catalysis system as the part of gas extraction system.Engine's exhaust system is connected to catalysis system by a blast pipe, described blast pipe typically has the diameter of 120mm and is connected with atomization system by a metering with the described jar that urea liquid is housed, and described metering and atomization system are used for the corresponding urea of provisioning request of giving is measured and atomizing.So, described system further comprises metering units, and this metering units comprises atomizer, so that urea is fed to gas extraction system, make it can with discharge gas reaction with the NO of minimum emissions in the environment xGas.Just make its atomizing when a nozzle described in the present invention is applied to urea is added at it before discharging gas, the edge that described nozzle can be arranged on after the metering units is transported to urea in the separate unit of optional position on the pipeline of discharging gas.Alternatively, described nozzle can be bonded together with metering units.
Described unit preferably is set to make to leave the urea that is atomized behind the nozzle can directly be mixed with discharge gas, simultaneously described nozzle typically be set to make from the fluid of nozzle ejection along jet direction or along discharge the gas any other needn't with the parallel direction of jet direction of discharging gas, for example vertical and jet direction sprays the jet that advances to discharge gas.Described nozzle can be arranged on the blast pipe central authorities of an internal combustion engine or gas turbine and/or in the tube wall of gas extraction system.A plurality of nozzles can distribute along the exhaust wall hoop of internal combustion engine and be provided with.Within the scope of the present invention, described one or more nozzle can be arranged on the optional position of respective row tracheae.
Described nozzle typically is arranged within the gas extraction system, and the gas of discharging the atomizing in the gas is evenly distributed, and will evenly distribute in catalysis system to guarantee the fluid after the atomizing.Described nozzle correspondingly can be arranged on the pipeline central authorities of outlet facing to the jet direction of discharging gas (but needn't be parallel with it).
In order to increase the uniformity that atomizing fluids distributes, in the gas extraction system a plurality of nozzles can be set.Described a plurality of nozzle preferably is arranged circumferentially, and evenly distributes in part embodiment.Yet described nozzle also can distribute along the jet direction of exhaust.The outlet of such nozzle preferably is arranged on facing to (but must be not parallel with it) on the jet direction of discharging gas.
It is pointed out that the combination of the nozzle of the nozzle that is arranged circumferentially along jet direction and/or one or more central authorities that are arranged on pipeline, within the scope of the invention.

Claims (14)

1. nozzle, it comprises first parts (1), described first parts have surfaces A and fluid inlet and fluid issuing, at least when nozzle is pressurized, article two, or many passages in the surperficial B of described surfaces A and second parts (4) or between form, described second parts (4) cover on first parts (1).
2. nozzle as claimed in claim 1, wherein, described passage is two polymerizations and open passage at least, and is communicated with the fluid issuing fluid, promotes every fluid jet to have equal speed and volume flow at the access portal place simultaneously.
3. nozzle as claimed in claim 2, wherein, described passage is set in place in the channel spacer (2) between the surperficial B of the surfaces A of described first parts (1) and second parts (4).
4. as claim 2 or 3 described nozzles, further comprise the elastomeric element (3) between the surperficial B of the surfaces A that is positioned at described first parts (1) and second parts (4).
5. nozzle as claimed in claim 4 further comprises the retention tab parts (5) that are positioned between described elastomeric element (3) and second parts (4).
6. each described nozzle as in the above-mentioned claim, wherein, one or more grooves (8) are arranged in the surperficial B of described second parts (4) and/or in the re-entrant part (50).
7. as each described nozzle among the claim 1-6, wherein, described at least two polymerization passages are set to make the flow through fluid jet of passage (10) to run foul of each other outside nozzle.
8. as each described nozzle among the claim 1-6, wherein, described two passes at least is set in nozzle interior, at nozzle face and/or surpass the passage that nozzle face intersects, and makes to flow through the fluid jet of passage (10) at end face and/or surpass end face or run foul of each other in nozzle interior at least in part.
9. nozzle as claimed in claim 8, wherein, described passage is set to make the fluid jet that flows out from two passes at least to run foul of each other with the angle between 30 to 100 °.
As above-mentioned claim in each described nozzle, wherein, the cross-sectional area of every the fluid jet that from described passage, flows out 0.003 to 0.15mm 2Scope between, preferably 0.005 to 0.05mm 2Scope between, for example 0.01 to 0.03mm 2Scope between, be preferably 0.02mm 2
11. the nozzle system of one or more fluids of atomizing, it comprises two or more as each described nozzle among the claim 1-10.
12. the gas extraction system of an internal combustion engine, described gas extraction system comprise described nozzle of each claim or nozzle system as described above.
13. the method for an atomizing fluids, described fluid is preferably liquefied urea, and described method is included in the step that first pressure supplies fluid to nozzle, and described nozzle is as among the claim 1-11 as described in each.
14. the method for atomizing fluids as claimed in claim 13 further is included in the step that increases fluid pressure under the situation that the flow resistance in the nozzle increases because of the deposit in the nozzle.
CNA2006800468301A 2005-12-16 2006-12-15 Nozzle with impinging jets Pending CN101346186A (en)

Applications Claiming Priority (3)

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DKPA200501783 2005-12-16
DKPA200501783 2005-12-16
DKPA200601505 2006-11-16

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CN101346186A true CN101346186A (en) 2009-01-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113271762A (en) * 2019-01-03 2021-08-17 赛斯泰尔科技公司 Fluid jet agricultural devices, systems and methods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113271762A (en) * 2019-01-03 2021-08-17 赛斯泰尔科技公司 Fluid jet agricultural devices, systems and methods
CN113271762B (en) * 2019-01-03 2024-03-22 赛斯泰尔科技公司 Fluid jet agricultural devices, systems, and methods
US12037766B2 (en) 2019-01-03 2024-07-16 Susterre Technologies Inc. Fluid jet agricultural devices, systems and methods

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