CN109630182A - Powerless ventilation device and tunnel - Google Patents
Powerless ventilation device and tunnel Download PDFInfo
- Publication number
- CN109630182A CN109630182A CN201910048409.3A CN201910048409A CN109630182A CN 109630182 A CN109630182 A CN 109630182A CN 201910048409 A CN201910048409 A CN 201910048409A CN 109630182 A CN109630182 A CN 109630182A
- Authority
- CN
- China
- Prior art keywords
- ventilation shaft
- tunnel
- ventilation
- rotary fan
- swirl inducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 240
- 239000000411 inducer Substances 0.000 claims abstract description 126
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 10
- 230000001737 promoting effect Effects 0.000 abstract description 8
- 238000005273 aeration Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007667 floating Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
- F04D25/045—Units comprising pumps and their driving means the pump being fluid-driven the pump wheel carrying the fluid driving means, e.g. turbine blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Power Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to the aeration technology field of mine or tunnel, the powerless ventilation device and tunnel provided includes ventilation shaft and blower chamber, and ventilation shaft is equipped with the first air port and the second air port；Blower chamber includes rotary fan and swirl inducer, and rotary fan is installed in the inner cavity of ventilation shaft, and along the extending direction of ventilation shaft, swirl inducer is installed on outside ventilation shaft for the pectinid direction of rotary fan, and rotary fan and swirl inducer are sequentially connected；Swirl inducer single direction rotation under the drive of the air-flow of ventilation shaft, rotary fan single direction rotation under the drive of swirl inducer.Using swirl inducer with ventilation shaft outside flow rotation, can guarantee rotary fan pectinid direction stablize, guarantee ventilation shaft in gas flow stablize；In addition, the momentum transfer of the air-flow of different directions outside ventilation shaft to rotary fan can be conducive to the efficiency for promoting blower chamber, promote the drafting efficiency in ventilation shaft by blower chamber.
Description
Technical field
The present invention relates to the aeration technology fields of mine or tunnel, specifically, being to be related to a kind of powerless ventilation device
And tunnel.
Background technique
Air trapping in tunnel ontology can seriously affect the air quality in the inner cavity of tunnel ontology, to holdee's
Healthy unfavorable, especially some long and narrow tunnel ontologies, more into the inner cavity of tunnel ontology deeply, the sky in the inner cavity of tunnel ontology
Gas exchanges between gas and the external atmosphere of tunnel sheet are fewer, cause the air quality in the inner cavity of tunnel ontology poorer.
To solve the above problems, the prior art proposes miscellaneous ventilation device, however existing ventilation device is big
It is mostly by external electric power driving blower is that tunnel ontology is divulged information, this draft type power consumption that month after month gets off throughout the year is huge, mentions
Expense expenditure on high traffic operation, it is less economical；There are also some ventilation devices not to add external force driving, draught capacity
It is again very weak, it is not able to satisfy the air-conditioning requirement of tunnel ontology.
Summary of the invention
To solve the above-mentioned problems, one of the objects of the present invention is to provide a kind of good economy performance and performance of ventilating it is excellent
Powerless ventilation device.
To achieve the goals above, powerless ventilation device provided by the invention includes ventilation shaft and blower chamber, is led to
Air piping is equipped with the first air port and the second air port；Blower chamber includes rotary fan and swirl inducer, and rotary fan is installed on
In the inner cavity of ventilation shaft, along the extending direction of ventilation shaft, swirl inducer is installed on ventilation duct for the pectinid direction of rotary fan
Outside road, rotary fan and swirl inducer are sequentially connected；Swirl inducer single direction rotation under the drive of the air-flow of ventilation shaft, rotation
Fan single direction rotation under the drive of swirl inducer.
Therefore the present invention is designed by setting to powerless ventilation device and structure, by the way that ventilation duct will be set to
Rotary fan in road is sequentially connected with the swirl inducer being set to outside ventilation shaft, such swirl inducer air-flow outside ventilation shaft
Drive under rotate, then drive rotary fan rotation, the gas in ventilation shaft agitates lower flowing in the rotation of rotary fan,
Then the purpose that no additionaling power just agitates the gas in ventilation shaft to flow is realized；Why the technical program uses vortex leaf
Wheel and non-generic rotary fan, be due to ventilation shaft outside the equal potentially unstable of air-flow size and Orientation, if using general
For logical rotary fan with the flow rotation of ventilation shaft, the rotation direction that may cause the common rotary fan is unstable, so that should
Common rotary fan rotates in the forward direction sometimes and is occasionally reversed rotation, then causes rotary fan positive pectinid sometimes, sometimes instead
To pectinid, the gas exchanges in the first air port and the second air port are influenced；Therefore, the air-flow rotation outside using swirl inducer with ventilation shaft
Turn, accordingly even when the airflow direction outside ventilation shaft is unstable, swirl inducer can also be rotated around same direction always, guarantee rotation
The pectinid direction of fan is stablized, and guarantees that the gas flow in ventilation shaft is stablized；In addition, unless air-flow edge is parallel to swirl inducer
Axial rotary direction be blown to swirl inducer, otherwise remaining any direction is blown to the air-flow of swirl inducer, as long as intensity is enough all
It can cause swirl inducer rotating Vortex, this is but also swirl inducer can make blower chamber using the air-flow of more general orientation range
The momentum transfer of the air-flow of different directions outside ventilation shaft to rotary fan can be conducive to the efficiency for promoting blower chamber,
Promote the airflow efficiency in ventilation shaft.
One Preferable scheme is that, blower chamber further includes transmission shaft, and transmission shaft is along the extension side perpendicular to ventilation shaft
To on the side wall for being rotatably penetrated and arranged in ventilation shaft, the rotary shaft of rotary fan is equipped with first bevel gear, the position of transmission shaft
One end in the inner cavity of ventilation shaft is equipped with second bevel gear, first bevel gear and second bevel gear engaged transmission；Transmission
The one end of axis being located at outside ventilation shaft and swirl inducer are sequentially connected.
Therefore transmission shaft is along the side wall for being rotatably penetrated and arranged in ventilation shaft perpendicular to the extending direction of ventilation shaft
On, convenient for the rotary fan being installed in ventilation shaft and the swirl inducer being installed on outside ventilation shaft are driven by transmission shaft
Connection.
Another Preferable scheme is that, the bracket along cross sectional arrangement is connected on the inner wall of ventilation shaft, bracket is by extremely
Few two spokes composition, each spoke cross one another in the cross-section center of ventilation shaft, and rotary fan is rotatably mounted in
The crossover location of each spoke.
Therefore rotary fan is installed by intersecting at the spoke on vent conduit cross-sectional, can be realized will rotate
Fan is installed in ventilation shaft；Each spoke intersects in the cross-section center of ventilation shaft, and rotary fan is installed on respectively
The crossover location of spoke, so that rotary fan is suitable to the distance of draught tube walls everywhere, convenient for installing and using for rotary fan,
Convenient for using larger sized rotary fan；In addition, the setting of spoke influences less the performance of ventilating of ventilation shaft.
Another Preferable scheme is that, further include ventilation protective cover, swirl inducer be located at ventilation protective cover in.
Therefore since swirl inducer is located at outside ventilation shaft, if swirl inducer is exposed to outside ventilation shaft
In environment, it might have flying bird under the influence of the airflow or floating material hit to swirl inducer, swirl inducer is caused to damage；Therefore it sets
Ventilation protective cover is set, swirl inducer can be protected to exempt from flying bird or floating material shock by ventilation protective cover.
Another Preferable scheme is that, powerless ventilation device further includes the first filter screen, the first filter screen covering first
Air port；And/or powerless ventilation device further includes the second filter screen, the second filter screen covers the second air port.
Therefore first filter screen and the second filter screen setting, can effectively avoid large volume of solid-state sundries
It is entered in ventilation shaft by the first air port and the second air port, these solid-state sundries is avoided to influence the operating of rotary fan,
These solid-state sundries are avoided to block ventilation shaft.
Also one Preferable scheme is that, blower chamber is set as at least two groups, extension of each group blower chamber along ventilation shaft
Directional spreding, along the extending direction of ventilation shaft, the pectinid direction of each rotary fan is identical.
Therefore in each group blower chamber rotary fan pectinid direction it is identical, make each rotary fan to ventilation shaft
Interior air-flow forms synergistic effect, and the group number that blower chamber is arranged is more, is more conducive to the circulation for promoting ventilation shaft interior air-flow
Rate is conducive to the scavenging efficiency for promoting ventilation shaft.
To solve the above-mentioned problems, the second object of the present invention is to provide a kind of good economy performance and performance of ventilating is excellent
Tunnel.
To achieve the goals above, tunnel provided by the invention includes tunnel main body and powerless ventilation device above-mentioned,
Ventilation shaft arranges that the first air port is located at outside tunnel main body, and the second air port is located at tunnel main body along the extending direction of tunnel main body
Inner cavity in, swirl inducer is located in the inner cavity of tunnel main body, the extension of the rotation axis of swirl inducer perpendicular to tunnel main body
Direction.
Therefore since tunnel ontology is generally long and narrow space, in the long and narrow space of tunnel ontology closer to tunnel
Exchanging for the position of road ontology outlet, gas and the outer gas of tunnel ontology is more, further away from the position that tunnel ontology exports
Gas and exchanging for the outer gas of tunnel ontology are fewer；The position gaseous mass in the inner cavity of tunnel ontology further away from outlet is caused to be got over
Difference；It is influenced by air-flow outside the temperature difference, wagon flow and tunnel ontology, it is easy to form along tunnel ontology in the inner cavity of tunnel ontology
The air-flow of extending direction, however atmosphere progress of this deficiency of air to drive the gas and tunnel sheet of tunnel ontology depths external
Gas exchanges；It uses external electric power driving blower for the ventilation of tunnel ontology in the prior art, tunnel ontology can be effectively facilitated
The exchange of inner cavity China and foreign countries gas can effectively improve the gaseous mass in the inner cavity of tunnel ontology, however such mode power consumption is huge
Greatly, and long-time service is easy to cause electrical equipment to damage, restricted application；Therefore it is arranged for tunnel ontology above-mentioned unpowered
Ventilation device, rotary fan are installed in ventilation shaft, and swirl inducer is installed on outside ventilation shaft but is located at the interior of tunnel ontology
In chamber, and rotary fan and swirl inducer are sequentially connected, air-flow of the swirl inducer in the inner cavity of tunnel ontology drives backspin
Turn, and then drive rotary fan rotation, rotary fan agitates the gas in ventilation shaft to form air-flow, so that far from tunnel ontology
Inner cavity in gas can be exchanged by the external gas realization of ventilation shaft and tunnel sheet, by the rotation axis of swirl inducer
It is set perpendicularly to the extending direction of tunnel main body, swirl inducer can be made preferably to follow the gas along tunnel ontology extending direction
Stream rotation promotes the pectinid speed of rotary fan convenient for promoting the revolving speed of swirl inducer and rotary fan, is promoted in ventilation shaft
Airflow rate, promoted tunnel ontology inner cavity China and foreign countries gas exchange rate；In addition, using swirl inducer with ventilation shaft outside
Flow rotation, accordingly even when the airflow direction outside ventilation shaft is unstable, swirl inducer can also be rotated around same direction always,
Guarantee that the pectinid direction of rotary fan is stablized, guarantees that the gas flow in ventilation shaft is stablized；Also, unless air-flow edge is parallel to
The axial rotary direction of swirl inducer is blown to swirl inducer, and otherwise remaining any direction is blown to the air-flow of swirl inducer, is only eager to excel
Degree can cause swirl inducer rotating Vortex enough, this is but also swirl inducer can be made using the air-flow of more general orientation range
Blower chamber can be conducive to the momentum transfer of the air-flow of different directions outside ventilation shaft to rotary fan to promote blower chamber
Efficiency, promoted ventilation shaft in airflow efficiency.
One Preferable scheme is that, the pectinid direction of rotary fan be from the second air port to the first air port, the first air port
Outside is equipped with wind deflector, and there are vent passages between ventilation shaft and wind deflector, and along the extending direction of ventilation shaft, wind deflector covers
The first air port of lid.
Therefore mainly accelerate the exchange of the inner cavity China and foreign countries gas of tunnel ontology in the present invention by two ways,
Realize the purpose that air-flow improves in the inner cavity of tunnel ontology, a kind of mode is by blower chamber by the matter in tunnel chamber body
Poor gas bulging tunnel ontology is measured, another way is that sheet external fresh air in tunnel is blasted tunnel by blower chamber
In road chamber body；The technical program by the way of by gas bulging tunnel ontology second-rate in tunnel chamber body,
By the way that the air-flow in ventilation shaft is limited to extract out in real time in tunnel ontology to the external direction flowing of tunnel sheet far from tunnel
The second-rate gas in road ontology exit then improves the gaseous mass in tunnel ontology, however, the gas that tunnel sheet is external
Stream may be blown into gas into ventilation shaft by the first air port, from the gas that tunnel is originally blown into vitro and out of tunnel ontology
Collision is formed in chamber between derived gas, is unfavorable for the discharge of gas in the inner cavity of tunnel ontology, therefore wind deflector is set, gear
Aerofoil can be avoided the external air-flow of tunnel sheet and directly blow to the first air port, reduce the outer air-flow of tunnel ontology in ventilation shaft
The influence of air-flow is conducive to powerless ventilation device and smoothly the second-rate gas in the inner cavity of tunnel ontology is discharged.
Another Preferable scheme is that, the second air port be equipped at least two, each second air port is respectively positioned on any rotary wind
The side away from the first air port of fan.
Therefore at least two second air port make it possible to by same ventilation shaft be tunnel ontology inner cavity in extremely
Few two positions ventilation, is conducive to the gaseous mass for improving at least two positions in the inner cavity of tunnel ontology, makes ventilation shaft pair
The improvement of gaseous mass in the inner cavity of tunnel ontology everywhere is more uniform.
To solve the above-mentioned problems, the third object of the present invention is to provide a kind of good economy performance and performance of ventilating is excellent
Tunnel.
To achieve the goals above, tunnel provided by the invention includes that tunnel main body and at least two sets are above-mentioned unpowered logical
Wind apparatus, each ventilation shaft arrange along the extending direction of tunnel main body, the inner cavity of each ventilation shaft connection tunnel main body with
The external environment of tunnel main body；Each swirl inducer is located in the inner cavity of tunnel main body, the rotation axis of each swirl inducer perpendicular to
The extending direction of tunnel main body；In a part of powerless ventilation device, rotary fan is out of tunnel main body extroversion tunnel main body
The direction pectinid of chamber；In another part powerless ventilation device, rotary fan is from the inner cavity of tunnel main body to outside tunnel main body
Direction pectinid.
Therefore due to use powerless ventilation device above-mentioned, using swirl inducer with ventilation shaft outside air-flow
Rotation, accordingly even when the airflow direction outside ventilation shaft is unstable, swirl inducer can also be rotated around same direction always, guarantee rotation
The pectinid direction of rotary fan is stablized, and guarantees that the gas flow in ventilation shaft is stablized；Also, unless air-flow edge is parallel to vortex leaf
The axial rotary direction of wheel is blown to swirl inducer, and otherwise remaining any direction is blown to the air-flow of swirl inducer, as long as intensity is enough
It can cause swirl inducer rotating Vortex, this is but also swirl inducer can make air blast group using the air-flow of more general orientation range
The momentum transfer of the air-flow of different directions outside ventilation shaft to rotary fan can be conducive to the effect for promoting blower chamber by part
Rate promotes the airflow efficiency in ventilation shaft；In addition, a part of powerless ventilation device will be poor in the inner cavity of tunnel ontology
The gas of quality is drawn to that tunnel sheet is external, and sheet external fresh air in tunnel is supplemented to by another part powerless ventilation device
In the inner cavity of tunnel ontology, makes that second-rate gas can be discharged in the inner cavity of tunnel ontology in real time and supplement in real time new
Fresh air enables the gas in the inner cavity of tunnel ontology to realize the friendship with gas outside tunnel ontology by different ventilation devices
It changes, is more conducive to being promoted the air quality in the inner cavity of tunnel ontology.
Detailed description of the invention
Fig. 1 is the schematic diagram of powerless ventilation device of the present invention；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the top perspective view of 1 mesoscale eddies impeller of way；
Fig. 4 is the schematic diagram in tunnel of the present invention.
Specific embodiment
Powerless ventilation device embodiment:
Please referring to Fig. 1 to Fig. 3, powerless ventilation device provided in this embodiment includes ventilation shaft 1 and blower chamber 2,
Ventilation shaft 1 is equipped with the first air port 101 and the second air port 102；Blower chamber 2 includes rotary fan 201 and swirl inducer
202, rotary fan 201 is installed in the inner cavity of ventilation shaft 1, the extension of the pectinid direction of rotary fan 201 along ventilation shaft 1
Direction, swirl inducer 202 are installed on outside ventilation shaft 1, and rotary fan 201 and swirl inducer 202 are sequentially connected；Swirl inducer
202 under the drive of the air-flow of ventilation shaft 1 single direction rotation, rotary fan 201 unidirectionally revolved under the drive of swirl inducer 202
Turn.
By the way that the rotary fan being set in ventilation shaft 1 201 is driven with the swirl inducer 202 being set to outside ventilation shaft 1
Connection, such swirl inducer 202 rotate under the drive of the outer air-flow of ventilation shaft 1, then rotary fan 201 are driven to rotate, and lead to
Gas in air piping 1 agitates lower flowing in the rotation of rotary fan 201, then realizes that no additionaling power just agitates ventilation shaft
The purpose of gas flowing in 1；Why the technical program uses swirl inducer 202 and non-generic rotary fan, be due to
The direction potentially unstable of air-flow outside ventilation shaft 1, if revolved using common rotary fan with the air-flow of ventilation shaft 1
Turn, the rotation direction that may cause the common rotary fan is unstable, so that the common rotary fan rotates in the forward direction sometimes and has
When reversely rotate, then cause rotary fan 201 sometimes positive pectinid, be occasionally reversed pectinid, influence the first air port 101 and second
The gas exchanges in air port 102；Therefore, using swirl inducer 202 with the flow rotation outside ventilation shaft 1, accordingly even when ventilation duct
Airflow direction outside road 1 is unstable, and swirl inducer 202 can also be rotated around same direction always, guarantees the pectinid of rotary fan 201
Direction is stablized, and guarantees that the gas flow in ventilation shaft 1 is stablized；In addition, unless air-flow is along the axial rotary side of swirl inducer 202
To swirl inducer 202 is blown to, otherwise remaining any direction is blown to the air-flow of swirl inducer 202, as long as intensity can cause enough
202 rotating Vortex of swirl inducer, this is but also swirl inducer 202 can make blower chamber 2 using the air-flow of more general orientation range
The momentum transfer of the air-flow of the outer different directions of ventilation shaft 1 to rotary fan 201 can be conducive to promote blower chamber 2
Efficiency promotes the airflow efficiency in ventilation shaft 1.
Referring to figure 3., the maximum feature of swirl inducer 202 is: around same in each blade 2021 spreading process in the radial direction
Bent to rotation, so that seeing vertically, swirl inducer 202 is in distorted shape；Also, blade 2021 has certain extension along axial direction,
It is hit convenient for receiving air-flow；This air-flow for resulting in swirl inducer 202 to be radially blown to swirl inducer 202 is revolving curved blade
Most of rotation axis for all flowing to swirl inducer 202 is ipsilateral under 2021 guidance, makes swirl inducer 202 because of rotation axis two
The discontinuity equalization of side and generate torque, then cause swirl inducer 202 rotate.Certainly, the blade 2021 of swirl inducer 202 exists
The extension in 202 rotation axis direction of swirl inducer, which can not be, is parallel to the rotation axis, but blade 2021 along the rotation
The both ends of shaft axis are bent towards the direction close to the rotation axis, are conducive to swirl inducer 202 so preferably by air-flow towards same
Side guidance, is conducive to swirl inducer 202 and preferably follows flow rotation.
About the pectinid direction of rotary fan 201, it is set as the extending direction along ventilation shaft 1, the extension of ventilation shaft 1
Direction includes positive and negative two specific directions, it is only necessary to which the pectinid direction of rotary fan 201 deviates from another towards one of them
Outer one.
It should be pointed out that the pectinid direction of rotary fan 201 does not imply that needs make along the extending direction of ventilation shaft 1
The pectinid direction of rotary fan 201 is parallel with the extending direction of ventilation shaft 1, and refers to rotary fan 201 and agitate downstream energy
Extending direction along ventilation shaft 1 flows；It is, of course, preferable to the extending direction in the pectinid direction of rotary fan 201 and ventilation shaft 1
In parallel namely the rotation axis of rotary fan 201 is parallel to the extending direction of ventilation shaft 1, agitates in this way in rotary fan 201
Under, air-flow can be flowed along the extending direction of ventilation shaft 1 more quickly.
Referring to figure 2., the transmission connection mode about blower chamber 2 rotary fan 201 and swirl inducer 202, can be by
As under type is arranged: blower chamber 2 adds first bevel gear 206, second bevel gear 207 and transmission shaft 204,204 edge of transmission shaft
It is rotatably penetrated and arranged on the side wall of ventilation shaft 1 perpendicular to the extending direction of ventilation shaft 1, first bevel gear 206 is set to rotation
In the rotary shaft 203 of rotary fan 201, second bevel gear 207 is set to one in the inner cavity of ventilation shaft 1 of transmission shaft 204
End, 207 engaged transmission of first bevel gear 206 and second bevel gear；The one end and whirlpool of transmission shaft 204 being located at outside ventilation shaft 1
Propeller runner 202 is fixedly connected or is sequentially connected.Transmission shaft 204 is rotationally worn along the extending direction perpendicular to ventilation shaft 1
In on the side wall of ventilation shaft 1, convenient for by the rotary fan 201 being installed in ventilation shaft 1 and being installed on by transmission shaft 204
Swirl inducer 202 outside ventilation shaft 1 is sequentially connected.
About the installation of rotary fan 201, the bracket along cross sectional arrangement can be connected on the inner wall of ventilation shaft 1,
Bracket is made of two spokes 205, and two spokes 205 cross one another in the cross-section center of ventilation shaft 1, rotary fan
201 are rotatably mounted in the crossover location of each spoke 205.It is installed by the spoke 205 intersected on 1 cross section of ventilation shaft
Rotary fan 201 can be realized and rotary fan 201 is installed in ventilation shaft 1；Each spoke 205 intersects at ventilation shaft 1
In cross-section center, and rotary fan 201 is installed on to the crossover location of each spoke 205, so that rotary fan 201 is to ventilation duct
The distance of wall everywhere is suitable, convenient for installing and using for rotary fan 201, is also convenient for using larger sized rotary fan 201；This
Outside, the setting of spoke 205 influences the performance of ventilating of ventilation shaft 1 little.Certainly, the quantity of spoke 205 can be two more than,
Fewer than two.
It preferably, further include ventilation protective cover (not shown), swirl inducer 202 is located in ventilation protective cover.Due to
Swirl inducer 202 is located at outside ventilation shaft 1, if swirl inducer 202 is exposed in the environment outside ventilation shaft 1, in air-flow
Under the influence of might have flying bird or floating material is hit to swirl inducer 202, cause swirl inducer 202 to damage；Therefore setting ventilation
Protective cover can protect swirl inducer 202 to exempt from flying bird or floating material shock by ventilation protective cover.
Please refer to Fig. 1, it is preferable that powerless ventilation device further includes the first filter screen 3, the first filter screen 3 covering first
Air port 101；Powerless ventilation device further includes the second filter screen 4, and the second filter screen 4 covers the second air port 102.First filter screen
3 and second filter screen 4 setting, can effectively avoid large volume of solid-state sundries pass through the first air port 101 and the second air port
102 enter in ventilation shaft 1, avoid these solid-state sundries from influencing the operating of rotary fan 201, also avoid these solid-state sundries
Block ventilation shaft 1.
Please refer to Fig. 1, it is preferable that blower chamber 2 is set as at least two groups, extension of each group blower chamber 2 along ventilation shaft 1
The pectinid direction of directional spreding, the extending direction of ventilation shaft 1, each rotary fan 201 is identical.It is rotated in each group blower chamber 2
The pectinid direction of fan 201 is identical, and each rotary fan 201 is made to form synergistic effect to the air-flow in ventilation shaft 1, and air blast is arranged
The group number of component 2 is more, is more conducive to the circulating rate for promoting 1 interior air-flow of ventilation shaft.It should be noted that each rotary fan
201 pectinid direction is identical, is not necessarily referring to each rotary fan 201 pectinid in the same direction, and refers to each rotary fan 201 and fan
Air-flow in dynamic ventilation shaft 1 flows in the same direction on the extending direction along ventilation shaft 1.
Tunnel embodiment one:
Please referring to Fig. 1 to Fig. 4, tunnel provided in this embodiment includes tunnel main body and powerless ventilation device above-mentioned,
Ventilation shaft 1 arranges that the first air port 101 is located at outside tunnel main body, and the second air port 102 is located at tunnel along the extending direction of tunnel main body
In the inner cavity of road main body, swirl inducer 202 is located in the inner cavity of tunnel main body, and the rotation axis of swirl inducer 202 is perpendicular to tunnel
The extending direction of road main body.
Due to tunnel ontology 6 be generally long and narrow space, in the long and narrow space of tunnel ontology 6 closer to tunnel ontology 6
The position of outlet, gas and exchanging for the outer gas of tunnel ontology 6 are more, the gas further away from the position that tunnel ontology 6 exports
It is fewer with exchanging for the outer gas of tunnel ontology 6；The position gaseous mass in the inner cavity of tunnel ontology 6 further away from outlet is caused to be got over
Difference；It is influenced by the temperature difference, wagon flow and the outer air-flow of tunnel ontology 6, it is easy to form along tunnel ontology in the inner cavity of tunnel ontology 6
The air-flow of 6 extending direction, however this deficiency of air is to drive outside the gas and tunnel ontology 6 in 6 inner cavity of tunnel ontology
Atmosphere carries out gas exchanges；It uses external electric power driving blower for the ventilation of tunnel ontology 6 in the prior art, tunnel can be effectively facilitated
The exchange of the inner cavity China and foreign countries gas of road ontology 6, can effectively improve the gaseous mass in the inner cavity of tunnel ontology 6, however such side
Formula power consumption is huge, and is used for a long time and electrical equipment is easy to cause to damage, restricted application；Therefore it is arranged for tunnel ontology 6
Powerless ventilation device above-mentioned, rotary fan 201 are installed in ventilation shaft 1, and swirl inducer 202 is installed on ventilation shaft 1
In outer but inner cavity positioned at tunnel ontology 6, and rotary fan 201 and swirl inducer 202 are sequentially connected, swirl inducer 202 exists
Air-flow in the inner cavity of tunnel ontology 6 drives lower rotation, and then rotary fan 201 is driven to rotate, and rotary fan 201 agitates to divulge information
Gas in pipeline 1 forms air-flow, and the gas in the inner cavity far from tunnel ontology 6 is enabled to pass through ventilation shaft 1 and tunnel
Gas outside ontology 6 realizes exchange, and the rotation axis of swirl inducer 202 is set perpendicularly to the extending direction of tunnel main body,
Swirl inducer 202 can be made preferably to follow the flow rotation along 6 extending direction of tunnel ontology, convenient for promoting swirl inducer 202
With the revolving speed of rotary fan 201, the pectinid speed of rotary fan 201 is promoted, promotes the airflow rate in ventilation shaft 1, is promoted
The exchange rate of the inner cavity China and foreign countries gas of tunnel ontology 6；In addition, being revolved using swirl inducer 202 with the air-flow outside ventilation shaft 1
Turn, accordingly even when the airflow direction outside ventilation shaft 1 is unstable, swirl inducer 202 can also be rotated around same direction always, be guaranteed
The pectinid direction of rotary fan 201 is stablized, and guarantees that the gas flow in ventilation shaft 1 is stablized；Also, unless air-flow is along vortex leaf
The axial rotary direction of wheel 202 is blown to swirl inducer 202, and otherwise remaining any direction is blown to the air-flow of swirl inducer 202, as long as
Intensity can cause 202 rotating Vortex of swirl inducer enough, this is but also swirl inducer 202 can utilize more general orientation range
Air-flow enables blower chamber 2 to rotary fan 201, to be conducive to the momentum transfer of the air-flow of the outer different directions of ventilation shaft 1
The efficiency of blower chamber 2 is promoted, the airflow efficiency in ventilation shaft 1 is promoted.
It should be noted that by rotation axis is set perpendicular to the extending direction of tunnel ontology 6 for swirl inducer 202,
It should not be construed to the rotation axis of limitation swirl inducer 202 and the extending direction absolute upright of tunnel ontology 6；Why will
Swirl inducer 202 is set as rotation axis perpendicular to the extending direction of tunnel ontology 6, is because the air-flow in tunnel is mainly along tunnel
The extending direction in road, so that the rotation axis of swirl inducer 202 is conducive to perpendicular to airflow direction in most cases
Swirl inducer 202 preferably follows the flow rotation in tunnel, even if the rotation axis of swirl inducer 202 is not absolutely perpendicular to tunnel
The extending direction of road ontology 6 is also able to achieve goal of the invention.
It is set to the position of tunnel ontology 6 about powerless ventilation device, in order to arrange conveniently, Unpowered ventilation can be filled
It is arranged in the inner cavity of tunnel ontology 6, such as hangs on the top of tunnel ontology 6；Ventilation shaft 1 can certainly be embedded in shape
In entity at tunnel ontology 6, and swirl inducer 202 is placed in the inner cavity of tunnel ontology 6, such as digging has tunnel under massif
Ontology 6, ventilation shaft 1 can be in massifs, and swirl inducer 202 is placed in the inner cavity of tunnel ontology 6.
Preferably, the pectinid direction of rotary fan 201 is first air port 101 from the second air port 102 to the first air port 101
Outside be equipped with wind deflector 5, there are vent passages between ventilation shaft 1 and wind deflector 5, along the extending direction of ventilation shaft 1, gear
Aerofoil 5 covers the first air port 101.Mainly accelerate the inner cavity China and foreign countries gas of tunnel ontology 6 in the present invention by two ways
The purpose that air-flow improves in the inner cavity of tunnel ontology 6 is realized in exchange, and a kind of mode is will be in tunnel ontology 6 by blower chamber 2
Second-rate gas in chamber bloats tunnel ontology 6, and another way is will be new outside tunnel ontology 6 by blower chamber 2
Fresh air blasts in the inner cavity of tunnel ontology 6；The technical program, which uses, bloats gas second-rate in 6 inner cavity of tunnel ontology
The mode of tunnel ontology 6 is taken out in real time by the direction flowing being limited to the air-flow in ventilation shaft 1 outside tunnel ontology 6
Out far from the second-rate gas in 6 exit of tunnel ontology in tunnel ontology 6, then improve the gas matter in tunnel ontology 6
Amount, however, the air-flow outside tunnel ontology 6 may be blown into gas into ventilation shaft 1 by the first air port 101, from tunnel ontology 6
It the gas that is blown into outside and is collided from being formed between gas derived in the inner cavity of tunnel ontology 6, is unfavorable for the inner cavity of tunnel ontology 6
The discharge of middle gas, therefore wind deflector 5 is set, wind deflector 5 can be avoided the air-flow outside tunnel ontology 6 and directly blow to the first air port
101, influence of the outer air-flow of tunnel ontology 6 to the air-flow in ventilation shaft 1 is reduced, is conducive to powerless ventilation device smoothly for tunnel
Second-rate gas discharge in the inner cavity of road ontology 6.
Referring to Fig. 4, it is preferable that the second air port 102 can be set to multiple, such as the second air port 102 is set as 2, and each
Two air ports 102 are respectively positioned on the side away from the first air port 101 of any rotary fan 201.Multiple second air ports 102 make it possible to
It is positions multiple in the inner cavity of tunnel ontology 6 ventilation by same ventilation shaft 1, is conducive to improve in the inner cavity of tunnel ontology 6
The gaseous mass of multiple positions keeps ventilation shaft 1 more equal to the improvement of the gaseous mass in the inner cavity of tunnel ontology 6 everywhere
It is even.
Tunnel embodiment two:
Tunnel provided in this embodiment includes tunnel main body and at least two sets of powerless ventilation devices above-mentioned, each ventilation duct
Road 1 arranges along the extending direction of tunnel main body, each ventilation shaft 1 be connected to tunnel main body 6 inner cavity and tunnel main body 6 it is outer
Portion's environment；Each swirl inducer 202 is located in the inner cavity of tunnel main body, and the rotation axis of each swirl inducer 202 is perpendicular to tunnel master
The extending direction of body；In a part of powerless ventilation device, rotary fan 201 is from the inner cavity of tunnel main body extroversion tunnel main body
Direction pectinid；In another part powerless ventilation device, side of the rotary fan 201 from the inner cavity of tunnel main body to outside tunnel main body
To pectinid.Due to using powerless ventilation device above-mentioned, using swirl inducer 202 with the flow rotation outside ventilation shaft 1, this
Even if the airflow direction outside sample ventilation shaft 1 is unstable, swirl inducer 202 can also be rotated around same direction always, guarantee rotation
The pectinid direction of fan 201 is stablized, and guarantees that the gas flow in ventilation shaft 1 is stablized；Also, unless air-flow is along swirl inducer
202 axial rotary direction is blown to swirl inducer 202, and otherwise remaining any direction is blown to the air-flow of swirl inducer 202, is only eager to excel
Degree can cause 202 rotating Vortex of swirl inducer enough, this is but also swirl inducer 202 can utilize the gas of more general orientation range
Stream, enables blower chamber 2, to rotary fan 201, to be conducive to mention by the momentum transfer of the air-flow of the outer different directions of ventilation shaft 1
The efficiency of blower chamber 2 is risen, the airflow efficiency in ventilation shaft 1 is promoted；In addition, a part of powerless ventilation device is by tunnel sheet
The gas of poor quality in the inner cavity of body 6 is drawn to outside tunnel ontology 6, and another part powerless ventilation device is by tunnel ontology
Fresh air outside 6 is supplemented in the inner cavity of tunnel ontology 6, makes to be discharged in real time in the inner cavity of tunnel ontology 6 second-rate
Gas, and fresh air can be supplemented in real time, so that the gas in the inner cavity of tunnel ontology 6 is passed through different ventilation devices real
It is now exchanged with tunnel ontology 6 outer gas, is more conducive to being promoted the air quality in the inner cavity of tunnel ontology 6.
The quantity of set powerless ventilation device is not limited to two sets on certain tunnel ontology 6, as long as having at least one
In addition set powerless ventilation device has at least a set of powerless ventilation device by tunnel to fresh air is supplemented in the middle part of tunnel ontology 6
The second-rate gas at 6 middle part of road ontology is drawn to outside tunnel ontology 6, can be achieved with the gas and tunnel at 6 middle part of tunnel ontology
The exchange of 6 extraneous gas of road ontology, it is ensured that the air quality at 6 middle part of tunnel ontology is effectively promoted.
Certainly, the air port in the inner cavity of tunnel ontology 6 of powerless ventilation device is not necessarily set to tunnel ontology 6
Middle part, the air port in the inner cavity of tunnel ontology 6 of unpowered device can be set to the position of any one improper ventilation, with
Realize the improvement to the air quality of improper ventilation position in the inner cavity of tunnel ontology 6.
The rest part of tunnel embodiment two is the same as tunnel embodiment one.
Finally it is emphasized that the above description is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is right
For those skilled in the art, the present invention can have various change and change, all within the spirits and principles of the present invention,
Any modification, equivalent substitution, improvement and etc. done, should all be included in the protection scope of the present invention.
Claims (10)
1. powerless ventilation device, including ventilation shaft, the ventilation shaft is equipped with the first air port and the second air port；
It is characterized by:
The powerless ventilation device further includes blower chamber, and the blower chamber includes rotary fan and swirl inducer, described
Rotary fan is installed in the inner cavity of the ventilation shaft, the extension of the pectinid direction of the rotary fan along the ventilation shaft
Direction, the swirl inducer are installed on outside the ventilation shaft, and the rotary fan and the swirl inducer are sequentially connected；
Swirl inducer single direction rotation under the drive of the air-flow of the ventilation shaft, the rotary fan is in the vortex leaf
Single direction rotation under the drive of wheel.
2. powerless ventilation device according to claim 1, it is characterised in that:
The blower chamber further includes transmission shaft, the transmission shaft along the extending direction perpendicular to the ventilation shaft rotationally
It is arranged on the side wall of the ventilation shaft, the rotary shaft of the rotary fan is equipped with first bevel gear, the transmission shaft
One end in the inner cavity of the ventilation shaft is equipped with second bevel gear, the first bevel gear and the second bevel gear
Engaged transmission；
The one end of the transmission shaft being located at outside the ventilation shaft and the swirl inducer are sequentially connected.
3. powerless ventilation device according to claim 1, it is characterised in that:
The bracket along cross sectional arrangement is connected on the inner wall of the ventilation shaft, the bracket is made of at least two spokes,
Each spoke crosses one another in the cross-section center of the ventilation shaft, and the rotary fan is rotatably mounted in each spoke
The crossover location of item.
4. powerless ventilation device according to claim 1, it is characterised in that:
It further include ventilation protective cover, the swirl inducer is located in the ventilation protective cover.
5. powerless ventilation device according to claim 1, it is characterised in that:
The powerless ventilation device further includes the first filter screen, and first filter screen covers first air port；And/or
The powerless ventilation device further includes the second filter screen, and second filter screen covers second air port.
6. powerless ventilation device according to claim 1, it is characterised in that:
The blower chamber is set as at least two groups, and blower chamber described in each group is distributed along the extending direction of the ventilation shaft, edge
The pectinid direction of the extending direction of the ventilation shaft, each rotary fan is identical.
7. tunnel, including tunnel main body, it is characterised in that:
It further include such as powerless ventilation device as claimed in any one of claims 1 to 6, the ventilation shaft is along the tunnel main body
Extending direction arrangement, first air port is located at outside the tunnel main body, and second air port is located at the tunnel main body
In inner cavity, the swirl inducer is located in the inner cavity of the tunnel main body, and the rotation axis of the swirl inducer is perpendicular to described
The extending direction of tunnel main body.
8. tunnel according to claim 7, it is characterised in that:
The pectinid direction of the rotary fan is to set on the outside of first air port from second air port to first air port
There is wind deflector, there are vent passages between the ventilation shaft and the wind deflector, along the extending direction of the ventilation shaft, institute
It states wind deflector and covers first air port.
9. tunnel according to claim 7, it is characterised in that:
Second air port is set as two or more, each second air port be respectively positioned on any rotary fan away from described the
The side in one air port.
10. tunnel, including tunnel main body, it is characterised in that:
It further include at least two sets of powerless ventilation devices as described in as claimed in any one of claims 1 to 6, each ventilation shaft
Along the tunnel main body extending direction arrange, each ventilation shaft be connected to the tunnel main body inner cavity and the tunnel
The external environment of road main body；Each swirl inducer is located in the inner cavity of the tunnel main body, the rotation of each swirl inducer
Extending direction of the axis perpendicular to the tunnel main body；In a part of powerless ventilation device, the rotary fan is from institute
State the direction pectinid of the inner cavity of the export-oriented tunnel main body of tunnel main body；It is described in powerless ventilation device described in another part
Direction pectinid of the rotary fan from the inner cavity of the tunnel main body to outside the tunnel main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048409.3A CN109630182A (en) | 2019-01-18 | 2019-01-18 | Powerless ventilation device and tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048409.3A CN109630182A (en) | 2019-01-18 | 2019-01-18 | Powerless ventilation device and tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630182A true CN109630182A (en) | 2019-04-16 |
Family
ID=66062159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910048409.3A Pending CN109630182A (en) | 2019-01-18 | 2019-01-18 | Powerless ventilation device and tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630182A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201810490U (en) * | 2010-10-12 | 2011-04-27 | 宁波银风能源科技股份有限公司 | Subway tunnel vertical shaft wind power generation device |
| CN204301245U (en) * | 2014-05-27 | 2015-04-29 | 东北大学 | The novel energy-conserving ventilation device of wind-drive |
| CN105909298A (en) * | 2016-05-31 | 2016-08-31 | 张东省 | Tunnel ventilating device |
| CN107120927A (en) * | 2017-06-16 | 2017-09-01 | 山东琦泉能源科技有限公司 | Pressure-vaccum convolution material drying system and its control method |
| CN206647212U (en) * | 2017-03-23 | 2017-11-17 | 西华大学 | A kind of tunnel wind power power generation turbine |
| CN207686751U (en) * | 2017-12-20 | 2018-08-03 | 中北交通建设集团有限公司 | A kind of tunnel excavation ventilation device |
| CN208075536U (en) * | 2017-06-16 | 2018-11-09 | 山东琦泉能源科技有限公司 | A kind of lossless electric-type aeration drying system |
| CN210068223U (en) * | 2019-01-18 | 2020-02-14 | 中铁十九局集团第七工程有限公司 | Unpowered ventilation device and tunnel |
-
2019
- 2019-01-18 CN CN201910048409.3A patent/CN109630182A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201810490U (en) * | 2010-10-12 | 2011-04-27 | 宁波银风能源科技股份有限公司 | Subway tunnel vertical shaft wind power generation device |
| CN204301245U (en) * | 2014-05-27 | 2015-04-29 | 东北大学 | The novel energy-conserving ventilation device of wind-drive |
| CN105909298A (en) * | 2016-05-31 | 2016-08-31 | 张东省 | Tunnel ventilating device |
| CN206647212U (en) * | 2017-03-23 | 2017-11-17 | 西华大学 | A kind of tunnel wind power power generation turbine |
| CN107120927A (en) * | 2017-06-16 | 2017-09-01 | 山东琦泉能源科技有限公司 | Pressure-vaccum convolution material drying system and its control method |
| CN208075536U (en) * | 2017-06-16 | 2018-11-09 | 山东琦泉能源科技有限公司 | A kind of lossless electric-type aeration drying system |
| CN207686751U (en) * | 2017-12-20 | 2018-08-03 | 中北交通建设集团有限公司 | A kind of tunnel excavation ventilation device |
| CN210068223U (en) * | 2019-01-18 | 2020-02-14 | 中铁十九局集团第七工程有限公司 | Unpowered ventilation device and tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 杨其新等: "《地下工程施工与管理》", 31 August 2015, 西南交通大学出版社, pages: 359 - 361 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105333503B (en) | A kind of air conditioner indoor unit | |
| CN106287987B (en) | The air-out control method of cabinet air-conditioner, air conditioner and cabinet air-conditioner | |
| CN202470333U (en) | Air conditioner | |
| CN103245042B (en) | A kind of air-conditioner | |
| CN206222458U (en) | Cabinet air-conditioner and air-conditioner | |
| CN105697394B (en) | The efficient exit flow field of microminiature is undistorted centrifugal blower | |
| CN108278680A (en) | Vertical air conditioner equipment | |
| CN206071945U (en) | A kind of centrifugal wind wheel, using its centrifugal blower and air-conditioner | |
| CN109882932A (en) | Air conditioner indoor unit and air conditioner | |
| CN104764093B (en) | Indoor unit of wall hanging type air conditioner | |
| CN112918218A (en) | Air conditioning device and automobile | |
| CN105201912B (en) | Vertical indoor set | |
| CN107747565A (en) | Air duct assembly of cross flow wind wheel and tower fan | |
| CN109630184A (en) | Powerless ventilation device and tunnel | |
| CN109630182A (en) | Powerless ventilation device and tunnel | |
| CN210568923U (en) | Novel air purifier | |
| CN210068223U (en) | Unpowered ventilation device and tunnel | |
| CN209278176U (en) | Mining machinery trailer system cooling fan | |
| CN201787673U (en) | Floor type air conditioner | |
| CN102852854A (en) | Floor type air conditioner and oblique flow fan thereof | |
| CN214984714U (en) | Air conditioning device and automobile | |
| CN110535290A (en) | The super high speed motor air-cooled circulatory system in parallel | |
| CN109630183A (en) | Powerless ventilation device and tunnel | |
| CN206738246U (en) | Volute of blower and centrifugal blower | |
| CN208380923U (en) | S type vanes close formula impeller for Small Centrifugal Fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210527 Address after: 510000 room 707, No.2, Huafei street, Huangge Town, Nansha District, Guangzhou City, Guangdong Province (office only) Applicant after: Guangzhou Engineering Co., Ltd. of China Railway 19th Bureau Group Address before: China railway building, 111 Gangchang Road, Xiawan, Gongbei, Zhuhai, Guangdong 519020 Applicant before: NO.7 ENGINEERING CO., LTD. OF CHINA RAILWAY 19 BUREAU Group |