CN108422667A - Protective gas feed system - Google Patents
Protective gas feed system Download PDFInfo
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- CN108422667A CN108422667A CN201810439822.8A CN201810439822A CN108422667A CN 108422667 A CN108422667 A CN 108422667A CN 201810439822 A CN201810439822 A CN 201810439822A CN 108422667 A CN108422667 A CN 108422667A
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- gas
- protective gas
- protective
- feed system
- turbulivity
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- 230000001681 protective effect Effects 0.000 title claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 238000009826 distribution Methods 0.000 claims description 17
- 230000002829 reductive effect Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000010926 purge Methods 0.000 abstract description 12
- 239000003344 environmental pollutant Substances 0.000 abstract description 10
- 231100000719 pollutant Toxicity 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 238000004140 cleaning Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000000110 selective laser sintering Methods 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 254
- 238000010276 construction Methods 0.000 description 33
- 239000012530 fluid Substances 0.000 description 30
- 238000002156 mixing Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 11
- 230000006872 improvement Effects 0.000 description 10
- 241000216843 Ursus arctos horribilis Species 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000003500 flue dust Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
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- 230000008676 import Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
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- 239000012141 concentrate Substances 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- -1 volatile matter Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/364—Conditioning of environment
- B29C64/371—Conditioning of environment using an environment other than air, e.g. inert gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/35—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
Abstract
A kind of protective gas feed system; it is included in the gas input module and gas output module that target area is oppositely arranged; protective gas flows from the gas input module to the gas output module and forms protection gas band, and the turbulivity of the protective gas is in preset range so that the turbulent eddy of the protective gas is respectively positioned in the protection gas band.Protective gas feed system provided by the invention is used to form the protective gas with ideal turbulivity in target area; the effect of oxidation protection and purging cleaning is provided selective laser sintering process; it reduces diffusing for pollutant and flies upward phenomenon, ensure sintering processing efficiency.
Description
Technical field
The invention belongs to increases material manufacturing technology fields, are a kind of protective gas feed systems specifically.
Background technology
Increasing material manufacturing (Additive Manufacturing, AM) is commonly called as 3D printing, be merged CAD,
Material is processed with forming technique, based on digital model file, by software and digital control system by dedicated metal material, non-
Metal material and biomaterial for medical purpose are successively accumulated according to modes such as extruding, sintering, melting, photocuring, injections, are produced
The manufacturing technology of physical item.
Wherein, selective laser sintering (Selective Laser Sintering) is a kind of important increasing material manufacturing side
Method.Its principle is that laser beam is selectively successively sintered dusty material according to layering cross section information progress, has all been sintered
At the extra powder of rear removal, to obtain required part.
In selective laser sintering process, continuous layer of powder material will produce a considerable number of flue dust, volatile matter and atomization
Object, and mix with the powder fines flown upward, so that the light path of laser beam is stopped and influences to be sintered efficiency.Especially in Processing Room
The supply of protective gas further causes flue dust, volatile matter, aerosol and mixing for powder fines to fly upward, and serious reduce is burnt
Tie processing efficiency.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of protective gas feed systems, in target area
Domain forms the protective gas with ideal turbulivity, provides selective laser sintering process the work of oxidation protection and purging cleaning
With, it reduces diffusing for pollutant and flies upward phenomenon, guarantee sintering processing efficiency.
The purpose of the present invention is achieved through the following technical solutions：
A kind of protective gas feed system is included in the gas input module that target area is oppositely arranged and exports mould with gas
Block, protective gas flow from the gas input module to the gas output module and form protection gas band, the protection gas
The turbulivity of body is in preset range so that the turbulent eddy of the protective gas is respectively positioned in the protection gas band.
As an improvement of the above technical solution, gas input module phase coaxial with the gas output module holding
It is right.
As a further improvement of the above technical scheme, stream of the sectional dimension of the protection gas band along the protective gas
Dynamic direction is kept constant.
As a further improvement of the above technical scheme, shape between the gas input module and the gas output module
It is pressed at driving, the driving pressure is not less than atmospheric pressure, and the turbulivity of the protective gas is depressed in the driving in described pre-
If in range.
As a further improvement of the above technical scheme, the gas input module is for introducing described in source gas and adjusting
The turbulivity of source gas, to export the protective gas.
As a further improvement of the above technical scheme, the gas input module includes：
Water conservancy diversion converter obtains controlled air for adjusting the turbulivity of the source gas；
Follower is shunted, the protective gas is exported for shunting the controlled air.
As a further improvement of the above technical scheme, the gas input module further includes flow mixer, the stream
For body mixer for realizing the mixed gas that is obtained by uniformly mixingg of the source gas, the water conservancy diversion converter makes the gaseous mixture
The turbulivity of body is reduced to preset range and obtains the controlled air.
As a further improvement of the above technical scheme, the gas output module is for protecting gas end of tape described in pump drainage
Protective gas, and reduce the turbulivity of discharged protective gas.
As a further improvement of the above technical scheme, the protective gas feed system further includes auxiliary input module,
The auxiliary input module for input auxiliary gas, the auxiliary gas directed flow and formed assist gas band, the auxiliary
Gas band is with the protection gas band in stacked distribution in the target area, the flowing side of the auxiliary gas and the protective gas
To with non-zero included angle.
As a further improvement of the above technical scheme, the flow direction phase of the auxiliary gas and the protective gas
Instead, and flow direction reverse occurs in the end of the auxiliary gas band and imports the protection gas band.
The beneficial effects of the invention are as follows：
In the gas input module that target area is oppositely arranged and gas output module, make to form protective gas therebetween
With protection gas band, the turbulivity of protective gas is in preset range, and the turbulent eddy of protective gas is made to be respectively positioned on protection gas band
It is interior, to realize that the orientation to flue dust, volatile matter aerosol and powder fines purges, avoids pollutant from flying upward and diffuse, mesh
Mark region keeps clean and tidy, laser optical path links up, and effectively ensures laser sintered efficiency.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram for the protective gas feed system that the embodiment of the present invention 1 provides；
Fig. 2 is the perspective diagram of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides；
Fig. 3 is the schematic cross-sectional view of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides；
Fig. 4 is the water conservancy diversion converter of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides
The perspective diagram of first structure；
Fig. 5 is the water conservancy diversion converter of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides
The axonometric schematic diagram of second structure；
Fig. 6 is the water conservancy diversion converter of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides
The perspective diagram of second structure；
Fig. 7 is the shunting follower of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides
Decomposition diagram；
Fig. 8 is the shunting follower of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides
Schematic cross-sectional view；
Fig. 9 is the flow mixer of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides
Axonometric schematic diagram；
Figure 10 is the flow mixer of the gas input module for the protective gas feed system that the embodiment of the present invention 2 provides
Schematic cross-sectional view；
Figure 11 is the gas ejector of the gas output module for the protective gas feed system that the embodiment of the present invention 3 provides
Perspective diagram；
Figure 12 is the auxiliary loader of the auxiliary input module for the protective gas feed system that the embodiment of the present invention 4 provides
Axonometric schematic diagram.
Main element symbol description：
1000- protective gas feed systems, P (a)-gas input modules, 0100- water conservancy diversion converters, 0110- blower inlet casings
Body, 0111- water conservancy diversion input terminals, 0112- diversion cavities, 0113- water conservancy diversion output ends, 0120- guide vanes, 0200- shunt follower,
0210- follower ontologies, 0211- is through-flow chamber, 0220- shunt grid, 0221- transverse direction grizzly bars, the longitudinal directions 0222- grizzly bar, and 0223- is logical
Stream grid, 0300- flow mixers, 0310- mixer cases, 0311- antethecas, 0312- rear walls, 0313- peripheral walls, 0314- are mixed
Conjunction room, 0320- fluid inputs, 0330- fluid exits, 0331- shunting gate hole, 0340- mounting ears, P (b)-gases are defeated
Go out module, 1100- gas ejectors, 1110- drainage shells, 1111- drainage input terminals, 1111a- drainage fence, 1112- drainages
Chamber, 1113- drainage output ends, 1120- drainage blades, P (c)-auxiliary input modules, 2100- assist loader, 2110- auxiliary
Input shell, 2120- auxiliary input terminals, 2130- auxiliary output terminals.
Specific implementation mode
To facilitate the understanding of the present invention, protective gas feed system is more fully retouched below with reference to relevant drawings
It states.The preferred embodiment of protective gas feed system is given in attached drawing.But protective gas feed system can pass through many
Different form is realized, however it is not limited to embodiment described herein.Make pair on the contrary, purpose of providing these embodiments is
The disclosure of protective gas feed system is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.It is in the term used in the description of protective gas feed system herein
In order to describe the purpose of specific embodiment, it is not intended that the limitation present invention.Term " and or " used herein includes one
Or any and all combinations of multiple relevant Listed Items.
Embodiment 1
Referring to Fig. 1, the present embodiment discloses a kind of protective gas feed system 1000, it is included in target area and is oppositely arranged
Gas input module P (a) and gas output module P (b), protective gas is from gas input module P (a) to gas output module
P (b) flows and forms protection gas band, and the turbulivity of protective gas is in preset range so that the turbulent eddy of protective gas is equal
In protection gas band.Protective gas is depending on actual processing needs, and in increasing material manufacturing, protective gas is inert gas
(such as argon gas) or non-reactive gas (such as nitrogen).
In general, target area is set in vessel.Exemplarily, target area is Processing Room.Wherein, gas inputs
Module P (a) and gas output module P (b) is oppositely disposed in the both ends of target area.It is apparent that protection gas band can play pair
The protection of entire target area is acted on cleaning.
Turbulivity, which is in the protective gas in preset range, has following characteristic：First, protective gas has turbulence characteristic,
It is enough to be discharged after making it be sufficiently mixed with pollutant (such as flue dust, volatile matter, dusty material fines), realizes to the clear of Processing Room
Reason；Second, the turbulivity of protective gas should be less than the turbulivity for causing pollutant to diffuse to entire target area, to avoid pollution
The diffusion of object diffuses.Further, the turbulent eddy of protective gas is respectively positioned in protection gas band, and pollutant is made to remain in guarantor
It protects in gas band, to ensure the orientation discharge of pollutant, avoids causing to fly upward because of vortex fluttering.
Wherein, preset range can according to the parameters such as the characteristic of the Processing Room of concrete application and required protective gas flow velocity into
Row calculates or experiment measures.Exemplarily, the turbulivity of protective gas can be not more than 5%, be in low turbulence levels.
Gas input module P (a) introduces protective gas for introducing to target area, and gas output module P (b) is used for certainly
Protective gas and pollutant therein is discharged in target area, that is, completes single purge.Exemplarily, gas input module P
(a) coaxial with gas output module P (b) holdings opposite.The opposite face of the two makes the vertical forward direction of protective gas blow.
Exemplarily, the sectional dimension of protection gas band is kept constant along the flow direction of protective gas.In other words, gas is protected
The sphere of action kept stable of band avoids acute variation and causes the disorder of protective gas, to ensure that smoothly purging is made
With.For example, the input terminal of the output end of gas input module P (a) and gas output module P (b) are of similar shape and ruler
It is very little, and keep positive opposite, to realize the constant of protection gas band.
Exemplarily, driving pressure is formed between gas input module P (a) and gas output module P (b), makes protective gas
Realize directed flow.Driving pressure is not less than atmospheric pressure, and the turbulivity of protective gas is depressed in driving in preset range.It is different
It is limited to 10 in the driving pressure of some Processing Rooms-2To 10-7The method of the through-flow environment of partial pressure of Torr, protective gas feed system
1000 can provide the through-flow of inert gas or non-reactive gas under the pressure of slightly above atmospheric pressure, be effectively reduced Processing Room
The realization difficulty of interior gaseous environment, it is easy to accomplish there is significant economy.
Exemplarily, gas input module P (a) is used to introduce source gas and adjusts the turbulivity of source gas, to export
Protective gas.Wherein, source gas can be introduced directly from air source, can also be introduced after other gas circuits improve element regulation.It should manage
Solution, the protective gas of air-flow input module output, that is, be directly used in the continuous layer of powder material of purging Processing Room.
Embodiment 2
Fig. 2~3 are please referred to, on the basis of embodiment 1, the present embodiment further discloses a kind of gas input of protection
Module P (a).Gas input module P (a) can be accomplished in several ways the turbulivity adjusting of source gas, exemplarily, gas
Input module P (a) includes the water conservancy diversion converter 0100 and shunting follower 0200 that gas circuit connects successively.Water conservancy diversion converter 0100 is used
Controlled air is obtained in the turbulivity for adjusting source gas, shunting follower 0200 is for shunting controlled air and output protection gas
Body.
Referring to Fig. 4, water conservancy diversion converter 0100 includes diversion shell 0110.Diversion shell 0110 has water conservancy diversion input terminal
0111, diversion cavity 0112 and water conservancy diversion output end 0113, three are sequentially communicated and are formed the channel of source gas flowing.Wherein, water conservancy diversion
Input terminal 0111, diversion cavity 0112 and the junction of water conservancy diversion output end 0113 seamlessly transit, and the wall surface of diversion cavity 0112 is smooth
Continuously, to reduce the linear loss of source gas and reduce turbulent phenomenon.Wherein, the passage section of diversion shell 0110 is defeated from water conservancy diversion
Enter end 0111 to water conservancy diversion output end 0113 to be incremented by, so that the flowing velocity of source gas is successively decreased, to make the turbulivity of source gas
(Turbulence Level) is controlled in lower range and obtains controlled air.
The construction of diversion cavity 0112 is varied, and exemplarily, diversion cavity 0112 has flat-shaped cavity constructions.Flat-shaped cavity
The thickness (that is, the distance between front and rear wall of diversion shell 0110) of construction is smaller, and it is in long and narrow wheel to make passage section
It is wide.Under the construction, the flow range for the controlled air that diversion cavity 0112 exports has stronger controllability with flow direction.
Wherein, the width dimensions of flat-shaped cavity constructions are incremented by from water conservancy diversion input terminal 0111 to water conservancy diversion output end 0113, realize
The incremental purpose of passage section, and water conservancy diversion output end 0113 is made to form flat mouth structure.Similarly, the width dimensions of flat mouth structure compared with
It is small, form long and narrow output face.Exemplarily, long and narrow output face includes the shapes such as long and narrow ellipse, narrow and long rectangular.
Wherein, the shape of flat-shaped cavity constructions is varied.Exemplarily, flat-shaped cavity constructions have along its thickness direction
Triangle projected outline.In other words, had by the section intercepted by the plane of normal using the thickness direction of flat-shaped cavity constructions
It is triangular shaped.The bottom edge of triangle is located on water conservancy diversion output end 0113, and the vertex opposite with bottom edge is located at water conservancy diversion input terminal
On 0111.
Exemplarily, flat-shaped cavity constructions have symmetrical structure along its width direction, and are formed and led in the both ends of symmetry axis
Flow input terminal 0111 and water conservancy diversion output end 0113.In other words, flat-shaped cavity constructions, water conservancy diversion input terminal 0111 and water conservancy diversion output end
0113 has center coaxial relation.For example, under aforementioned triangular projected outline situation, which is isosceles triangle.
Exemplarily, the guide vane 0120 of a plurality of array distributions is equipped in diversion cavity 0112, guide vane 0120 is certainly
Water conservancy diversion input terminal 0111 extends to water conservancy diversion output end 0113, and diversion cavity 0112 is divided into a plurality of water conservancy diversion streams by guide vane 0120
Road.Source gas enters water conservancy diversion runner, forms multiply shunting body and realizes shunting.Any shunting body by the water conservancy diversion runner where it about
Beam, it is further intensive and reduce turbulivity, enhance the controllable degree of source gas.Wherein, guide vane 0120 can be by metal or modeling
The different materials such as material are made, and have thin-walled ribbon structure.
Exemplarily, a plurality of guide vanes 0120 are along the Variable rate direction array distribution of diversion cavity 0112, water conservancy diversion leaf
Piece 0120 is connect with the front and rear wall of diversion cavity 0112 respectively, and the passage section of any water conservancy diversion runner is from water conservancy diversion input terminal 0111 to leading
Output end 0113 is flowed to be incremented by.In other words, a plurality of water conservancy diversion runners are along the Variable rate direction of diversion cavity 0112 successively neighbour distribution.
Wherein, the Variable rate of diversion cavity 0112 refers to that passage section is caused to be passed from water conservancy diversion input terminal 0111 to water conservancy diversion output end 0113
The size of increasing.For example, in aforementioned flat-shaped cavity constructions, the Variable rate of diversion cavity 0112 is its width direction.
The array rule of guide vane 0120 reduces source gas rapids depending on the concrete structure of diversion cavity 0112, to realize
The purpose of mobility.Exemplarily, distribution angle having the same between a plurality of guide vanes 0120.In other words, guide vane
0120 is uniformly distributed along same distribution circular arc.Aforementioned in the flat-shaped cavity constructions of symmetrical structure, the circle of the distribution circular arc
The heart is located on the symmetry axis of flat-shaped cavity constructions.Further, the normal of plane where distribution circular arc is along flat-shaped cavity constructions
Thickness direction.
Exemplarily, a plurality of guide vanes 0120 form circular arc distribution knot in it close to one end of water conservancy diversion input terminal 0111
Structure keeps the input terminal of water conservancy diversion runner more round and smooth, further decreases obstruction when shunting and loss, turbulivity is made further to drop
It is low.
Exemplarily, there is consistent variation to become for guide vane 0120 and the one side wall face of its immediate diversion cavity 0112
Gesture keeps the surface of each water conservancy diversion runner more smooth, ensures that the flowing of shunting body is smooth.For example, in the arc-shaped curved surface in two side
In flat-shaped cavity constructions, guide vane 0120 has curved surfaces, and the fluctuating rule of its curved surfaces is unanimously to and its homonymy
The side wall of diversion cavity 0112.
Supplementary explanation, water conservancy diversion input terminal 0111 and the shape of water conservancy diversion output end 0113 are varied, be generally adapted to and its
The shape of the outer member to connect.Exemplarily, water conservancy diversion input terminal 0111 have circular shape, and with 0120 end of guide vane
The circular arc distributed architecture of arrangement form has concentric relation.Please refer to Fig. 5~6, another kind demonstration, water conservancy diversion input terminal 0111
It can be the axially extending conduit along diversion cavity 0112.
Various shapes can be used in supplementary explanation, diversion shell 0110.Exemplarily, diversion shell 0110 has thin-wall case
Structure keeps it consistent with the shape of diversion cavity 0112.Under the construction, the size of diversion shell 0110 is more compact, and conducts oneself with dignity
Effectively reduce.
Exemplarily, water conservancy diversion converter 0100 has consistent thickness with shunting follower 0200, to ensure fluid
It keeps smoothing out substantially in thickness direction, distribution when to make protective gas export in the width direction is almost the same, ensures uniform
Purging effect.
Fig. 7~8 are please referred to, the main component of shunting follower 0200 includes follower ontology 0210, follower ontology
0210 has for for the through-flow through-flow chamber 0211 of controlled air.It is appreciated that through-flow chamber 0211 runs through follower ontology 0210,
And input terminal and output end are formed at both ends open.
Wherein, have between the input terminal (shunting input terminal) and output end (shunting output end) of through-flow chamber 0211 non-
Zero angle, to realize that the direction of controlled air is converted.The numerical value of non-zero included angle is exemplary depending on specific steering needs
Ground, the angle for shunting input terminal and shunting between output end is right angle.
Shunting grid 0220 of the inside setting with a plurality of through-flow grids 0223 of through-flow chamber 0211, for realizing controlled
The shunting of gas.Through-flow grid 0223 extends along the flow direction of controlled air, keeps both ends perforation.Controlled air encounters shunting
When grid 0220, divided by each through-flow grid 0223 and form multiply shunting body, realizes shunting.Any shunting body is by where it
Through-flow grid 0223 constrain, it is further intensive and reduce turbulivity, enhance the controllable degree of controlled air, to obtain protection gas
Body.
The frame mode of shunting grid 0220 is numerous, and exemplarily, shunting grid 0220 includes lateral grizzly bar 0221 and indulges
To grizzly bar 0222.Lateral grizzly bar 0221 is interspersed with longitudinal grizzly bar 0222, to form a plurality of through-flow grids 0223.It can be with
Understand, the quantity of lateral grizzly bar 0221 and longitudinal direction grizzly bar 0222 may respectively be one to a plurality of, and be pushed against respectively in through-flow chamber
0211 side wall, to form multiple rows of through-flow grid 0223.
Exemplarily, the output end of shunting grid 0220 is located at the shunting output end of through-flow chamber 0211.In other words, it shunts
The output end of grid is to shunt output end.It is formed in the shunting in each through-flow grid 0223 through shunting the shunting of grid 0220
Body no longer crosses and exports without leave, and it is the gas after shunting to make the protective gas that shunting follower 0200 exports, and has ideal
Turbulivity and controlled degree.
Exemplarily, there is the relationship being mutually parallel between a plurality of through-flow grids 0223, ensure the flowing side of shunting body
To strict conformance, realize to the ideal purging of target area and protection.In a kind of demonstration, there is phase between lateral grizzly bar 0221
Mutual parallel relation.In another kind is demonstrated, there is the relationship that is mutually parallel between longitudinal grizzly bar 0222.
Exemplarily, through-flow chamber 0211 has flat-shaped bending cavity constructions.The width dimensions of flat-shaped bending cavity are more than thickness
Size is spent, thickness (that is, the distance between front and rear wall of follower ontology 0210) is smaller, and it is in long and narrow to make passage section
Profile.Meanwhile the length dimension of flat-shaped bending cavity constructions bends along its thickness direction, realizes that the direction of controlled air becomes
It changes.
Under the construction, the purging range for the protective gas that through-flow chamber 0211 exports has stronger controllability.It shunts defeated
The protective gas for going out the output of device 0200 concentrates on required protection and cleaning range, and protective effect concentrates and avoids pollutant more
It is unrestrained.
Exemplarily, flat-shaped bending cavity is in knee rounding off.In other words, flat-shaped bending cavity has circular arc curved
Song imposes preferable guiding role to controlled air, and impact is avoided to influence and the turbulivity of protective gas is made to be held in default model
In enclosing.
Exemplarily, a plurality of splitterr vanes are equipped in through-flow chamber 0211, splitterr vanes extend to point from shunting input terminal
The input terminal of grid 0220 is flowed, through-flow chamber 0211 is divided into a plurality of water conservancy diversion runners by splitterr vanes.Exemplarily, in through-flow chamber
In 0211 application with flat-shaped cavity constructions, splitterr vanes are mutually parallel array along the width direction of flat-shaped cavity constructions.
Under the construction, the controlled air of shunting input terminal input passes through second diffluence, further enhances shunting effect.It is appreciated that appointing
One water conservancy diversion runner can be corresponding with multiple through-flow grids 0223, realizes two level shunts.
Fig. 9~10 are please referred to, exemplarily, gas input module P (a) further includes being set to water conservancy diversion converter 0100
The flow mixer 0300 of front end, flow mixer 0300 are obtained by uniformly mixingg mixed gas for realizing source gas, lead
Stream transformer 0100 makes the turbulivity of mixed gas be reduced to preset range and obtain controlled air.Here, water conservancy diversion above-mentioned turns
Source gas in parallel operation 0100 is because of mixed gas.
The main component of flow mixer 0300 includes mixer case 0310, and mixing chamber is set in mixer case 0310
0314, it is the main function place of source gas mixing.Mixer case 0310 includes antetheca 0311, rear wall 0312 and peripheral wall
0313, antetheca 0311 is oppositely arranged with rear wall 0312 and is connect by peripheral wall 0313, and three surrounds to form mixing chamber 0314.
Fluid input 0320 is set on antetheca 0311, to input source gas to mixing chamber 0314.Due to antetheca 0311 with
Rear wall 0312 keeps opposite, and fluid input 0320 also keeps opposite with rear wall 0312, the source for making fluid input 0320 input
Gas impacts rear wall 0312, to increase the velocity gradient of source gas or source gas is made to form turbulent flow, while flow direction occurs
Transformation.Source gas is in generation segmentation mixing in mixing chamber 0314 as a result, and with being acutely vortexed caused by turbulent flow, makes source
The mixing of gas is very abundant, ensures that the molecular distribution of source gas is more uniformly distributed, to form mixed gas.
The angle of fluid input 0320 and rear wall 0312 is depending on actual application environment, exemplarily, fluid input
The extending direction at end 0320 intersects vertically with the holding of rear wall 0312, makes the vertical Ground shock waves of the source gas of input in the table of rear wall 0312
Face further increases turbulivity and promotes mixed effect.
Wherein, peripheral wall 0313 opens up fluid exit 0330, for exporting mixed gas.Wherein, fluid input 0320
It is arranged vertically with fluid exit 0330.Here, the direction of fluid exit 0330 and the surface direction of rear wall 0312 more connect
Closely, it is smooth to ensure that the mixed gas by mixing steering flows when exporting, there is uniform molecular structure always.
Exemplarily, fluid input 0320 is constructed with cylindrical nozzle, negative pressure for increasing source gas and by source gas
Body is sprayed to rear wall 0312.In other words, fluid input 0320 has cylindrical configurations, and source gas is made to add under Bernoulli effect
Speed.In conjunction with the area discrepancy between fluid input 0320 and mixing chamber 0314, source gas is sent out when leaving fluid input 0320
Raw preferable jet action, the turbulivity impacted after rear wall 0312 are further promoted, and promote the mixed effect of source gas.
Exemplarily, mixing chamber 0314 has cylindrical cavity structure, fluid input 0320 coaxial with cylindrical cavity structure
Arrangement.In other words, antetheca 0311 and 0312 keeping parallelism of rear wall and vertical with peripheral wall 0313 respectively, and the inner surface of peripheral wall 0313
For cylindrical surface.Under coaxial relation, source gas is centrally located for the shock point of rear wall 0312.Having for being formed after impact is certain
The mixed gas of turbulivity leaves mixing chamber 0314 towards the component part of fluid exit 0330 through fluid exit 0330；
The component part in remaining direction is circled round at a high speed by the inner surface effect of peripheral wall 0313, is exported through fluid after further vortex mixed
0330 output of end.Visibly, cylindrical cavity structure has its special convolution acceleration, improves the turbulivity of mixed gas.
Exemplarily, it is antetheca 0311 with after that mixing chamber 0314, which has flat-shaped cavity body structure, the thickness of flat-shaped cavity body structure,
The spacing of wall 0312.The thickness of flat-shaped cavity body structure is smaller, makes the distance between fluid exit 0330 and rear wall 0312
It is smaller, ensure that the source gas after injection remains ideal velocity before impact, will not decay, it is mixed to obtain preferably impact
Close effect.Further, for the mixing chamber 0314 with flat-shaped cylindrical cavity structure, simulation model for mixing gases flows is more concentrated,
Acceleration of circling round is more notable.
Exemplarily, the extending direction of fluid input 0320 is consistent with the thickness direction of flat-shaped cavity body structure.Wherein, it flows
The extending direction of body input terminal 0320 is consistent with source gas flow direction.Under previous constructions, the positive vertical Ground shock waves of source gas
Rear wall 0312, energy is more concentrated.
As previously mentioned, fluid exit 0330 makes the mixed gas in mixing chamber 0314 obtain through the inside and outside of peripheral wall 0313
With discharge.Exemplarily, fluid exit 0330 includes a plurality of continuously distributed shunting gate hole 0331, any shunting gate hole
0331 keeps vertical with fluid input 0320.Gate hole 0331 is shunted for realizing the shunting of mixed gas, makes mixed gas
It is intensive and reduce turbulivity, enhance the controllable degree of mixed gas.
Exemplarily, shunting gate hole 0331 is divided in the outer profile array distribution along peripheral wall 0313 in distribution center of circle angular region
Cloth central angle to arc using the center of mixing chamber 0314 as the center of circle.For example, in foregoing cylindrical cavity body structure, gate hole is shunted
0331 along peripheral wall 0313 excircle arc be distributed, keep shunting function even more ideal, shunting hierarchical structure it is notable, make mixed gas
Turbulivity further decrease.
Be distributed central angle range depending on actual needs, exemplarily, be distributed central angle angular range be 70 °~
90°.In the range, shunting gate hole 0331 is successively acted in different location, and shunting hierarchical structure is more satisfactory.
Exemplarily, the peripheral wall 0313 of mixer case 0310 is equipped with the mounting ears 0340 for external connection.Peace
Dress ear 0340 realizes the close installation of flow mixer 0300 and outer member, ensures for being connected and fixed with outer member
The being completely embedded property of runner.In an application examples, the quantity of mounting ears 0340 is 2, and it is defeated to be symmetrically disposed on fluid
The both sides of outlet 0330.In this way, the mixed gas of fluid exit 0330 can be exported equably to outer member, flow channel is flat
It is smooth smooth.
Exemplarily, between the output end (i.e. fluid exit 0330) and water conservancy diversion input terminal 0111 of flow mixer 0300
It directly docks, it is not necessary that conduit is arranged, to ensure the in stable condition of mixed gas.In other words, fluid exit 0330 and water conservancy diversion are defeated
Entering end 0111, there is matched shape, realization to fit closely connection.
Exemplarily, flow mixer 0300, water conservancy diversion converter 0100 and shunting follower 0200 have consistent thickness
Size, to ensure that fluid keeps smoothing out substantially in thickness direction, distribution base when to make protective gas export in the width direction
This is consistent, ensures uniform purging effect.
Embodiment 3
On the basis of embodiment 1 or 2, the present embodiment further discloses a kind of gas output module P (b).Exemplarily,
Protective gas of the gas output module P (b) for pump drainage protection gas end of tape, and reduce the turbulent flow of discharged protective gas
Degree.For example, gas output module P (b) is connect with air-extractor (such as air pump), initiatively pump drainage protective gas.Meanwhile gas
Output module P (b) can also reduce the turbulivity of the protective gas of protection gas end of tape, and protective gas is avoided to occur in discharge process
Vortex is further ensured that the turbulivity for processing indoor protection gas band is stablized.It should be appreciated that the turbulent flow of protective gas discharge process
Degree does not directly affect the turbulivity for processing indoor protective gas, and plays a role in improving.
1 is please referred to Fig.1, exemplarily, gas output module P (b) includes gas ejector 1100, gas ejector 1100
Including drainage shell 1110.Drainage shell 1110 has drainage input terminal 1111, drainage lumens 1112 and a drainage output end 1113, and three
Person is sequentially communicated and is formed the channel of source gas flowing.Wherein, drainage input terminal 1111, drainage lumens 1112 and drainage output end
1113 junction seamlessly transits, and the wall surface of drainage lumens 1112 is smoothly continuous, and vortex phenomenon is reduced to reduce turbulivity.
Exemplarily, drainage input terminal 1111 is equipped with drainage fence 1111a, is shunted for the protective gas to discharge
Reduction of speed, to reduce the turbulivity of protective gas.Wherein, the passage section of drainage shell 1110 is from drainage input terminal 1111 to row
Stream output end 1113 successively decreases, and protective gas is made gradually to converge to be discharged.
Exemplarily, drainage input terminal 1111 and 1113 vertical distribution of drainage output end, make protective gas in discharge process
Realize that 90 ° of direction transformations, gas ejector 1100 can more be disposed compactly in the side of Processing Room, compression stroke occupancy.
The construction of drainage lumens 1112 is varied, and exemplarily, drainage lumens 1112 have flat-shaped cavity constructions.Flat-shaped cavity
The thickness (that is, the distance between front and rear wall of drainage shell 1110) of construction is smaller, and it is in long and narrow wheel to make passage section
It is wide.Under the construction, the flow range for the controlled air that drainage lumens 1112 export has stronger controllability with flow direction.
Wherein, the width dimensions of flat-shaped cavity constructions are incremented by from drainage input terminal 1111 to drainage output end 1113, realize
The incremental purpose of passage section, and drainage output end 1113 is made to form flat mouth structure.Similarly, the width dimensions of flat mouth structure compared with
It is small, form long and narrow output face.Exemplarily, long and narrow output face includes the shapes such as long and narrow ellipse, narrow and long rectangular.
Wherein, the shape of flat-shaped cavity constructions is varied.Exemplarily, flat-shaped cavity constructions have along its thickness direction
Triangle projected outline.In other words, had by the section intercepted by the plane of normal using the thickness direction of flat-shaped cavity constructions
It is triangular shaped.The bottom edge of triangle is located on drainage output end 1113, and the vertex opposite with bottom edge is located at drainage input terminal
On 1111.
Exemplarily, flat-shaped cavity constructions have symmetrical structure along its width direction, and are formed and arranged in the both ends of symmetry axis
Flow input terminal 1111 and drainage output end 1113.In other words, flat-shaped cavity constructions, drainage input terminal 1111 and drainage output end
1113 have center coaxial relation.For example, under aforementioned triangular projected outline situation, which is isosceles triangle.
Exemplarily, the drainage blade 1120 of a plurality of array distributions is equipped in drainage lumens 1112, drainage blade 1120 is certainly
Drainage input terminal 1111 extends to drainage output end 1113, and drainage lumens 1112 are divided into a plurality of water conservancy diversion streams by drainage blade 1120
Road.Protective gas enters water conservancy diversion runner, forms multiply shunting body and realizes shunting.Any shunting body is by the water conservancy diversion runner where it
Constraint, it is further intensive and reduce turbulivity, and converged in drainage output end 1113, to enhance the controllable degree of source gas.
Wherein, drainage blade 1120 can be made of different materials such as metal or plastics, and have thin-walled ribbon structure.
Embodiment 4
Referring to Fig. 1, embodiment 1-3 any one on the basis of, the present embodiment further discloses a kind of auxiliary input mould
Block P (c).Exemplarily, protective gas feed system 1000 further includes auxiliary input module P (c), and auxiliary input module P (c) is used
Gas is assisted in input, gas directed flow is assisted and forms auxiliary gas band, auxiliary gas band is with protection gas band in target area
Stacked distribution assists the flow direction of gas and protective gas to have non-zero included angle.Wherein, auxiliary gas is according to practical application need
It is exemplarily, identical as protective gas ingredient depending on wanting.
It is appreciated that auxiliary input module P (c) is difficult to the upper area covered for cleaning protection gas band, realize to mesh
Mark all standing in region.By the purging to upper area, it can be further ensured that the continuity of laser optical path, and make lasing light emitter
Pollutant accumulation will not occur for optical surface, ensure the cleaning of lasing light emitter and improve service life.
Exemplarily, the flow direction of gas and protective gas is assisted on the contrary, and being flowed in the end of auxiliary gas band
It reverses and imports protection gas band in direction.In other words, auxiliary gas complete to the purging of upper area after, reverse flow and import guarantor
Gas band is protected, is discharged together through gas output module P (b) with protection gas band, simplifies the structure of protective gas feed system 1000.Tool
Body, assist the flow direction of gas can be as shown in the Z in Fig. 1.
2 are please referred to Fig.1, exemplarily, auxiliary input module P (c) includes auxiliary loader 2100, assists loader 2100
With auxiliary input shell 2110 and may be contained within assisting the auxiliary input terminals 2120 and auxiliary output terminal on input shell 2110
2130.It assists the structure of loader 2100 varied, makes the structure size of auxiliary output terminal 2130 and drainage input terminal 1111
Relationship differs, such as identical, long and narrow, short and small different type.Exemplarily, gas input module can be used in auxiliary loader 2100
The structure type of P (a) also can only adopt the structure type of water conservancy diversion converter 0100, can also be other forms.
Further, auxiliary input module P (c) and for reducing auxiliary gas turbulivity, make the turbulent flow of auxiliary gas
Degree is in its corresponding preset range so that the turbulent eddy of auxiliary gas is respectively positioned in protection gas band.
Exemplarily, auxiliary loader 2100 is arranged in the same direction with 1100 homonymy of gas ejector, and assists loader 2100
Positioned at the upper end of gas ejector 1100.In turn, target area close to the side of gas input module P (a) in being arranged baffle, in fact
Now the direction of auxiliary gas is reversed.
In all examples being illustrated and described herein, any occurrence should be construed as merely illustrative, without
It is as limitation, therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot limitation of the scope of the invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.Therefore, protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of protective gas feed system, which is characterized in that be included in gas input module that target area is oppositely arranged with
Gas output module, protective gas flow from the gas input module to the gas output module and form protection gas band,
The turbulivity of the protective gas is in preset range so that the turbulent eddy of the protective gas is respectively positioned on the protection gas
In band.
2. protective gas feed system according to claim 1, which is characterized in that the gas input module and the gas
Body output module keeps coaxial opposite.
3. protective gas feed system according to claim 2, which is characterized in that the sectional dimension edge of the protection gas band
The flow direction of the protective gas is kept constant.
4. protective gas feed system according to claim 1, which is characterized in that the gas input module and the gas
Driving pressure is formed between body output module, the driving pressure is not less than atmospheric pressure, and the turbulivity of the protective gas is in the drive
Under dynamic pressure in the preset range.
5. protective gas feed system according to claim 1, which is characterized in that the gas input module is for introducing
Source gas and the turbulivity for adjusting the source gas, to export the protective gas.
6. protective gas feed system according to claim 5, which is characterized in that the gas input module includes：
Water conservancy diversion converter obtains controlled air for adjusting the turbulivity of the source gas；
Follower is shunted, the protective gas is exported for shunting the controlled air.
7. protective gas feed system according to claim 6, which is characterized in that the gas input module further includes stream
Body mixer, the flow mixer is for realizing the mixed gas that is obtained by uniformly mixingg of the source gas, the water conservancy diversion turn
Parallel operation makes the turbulivity of the mixed gas be reduced to preset range and obtain the controlled air.
8. protective gas feed system according to claim 1, which is characterized in that the gas output module is used for pump drainage
The protective gas of the protection gas end of tape, and reduce the turbulivity of discharged protective gas.
9. protective gas feed system according to claim 1, which is characterized in that further include auxiliary input module, it is described
Auxiliary input module for input auxiliary gas, the auxiliary gas directed flow and formed assist gas band, the auxiliary gas band
With the protection gas band in stacked distribution in the target area, the flow direction of the auxiliary gas and the protective gas has
There is non-zero included angle.
10. protective gas feed system according to claim 9, which is characterized in that the auxiliary gas and the protection
The flow direction of gas is on the contrary, and occurring direction reverse in the end of the auxiliary gas band and importing the protection gas band.
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