CN104990239B - A kind of annular uiform section current equalizer of cylinder wall sticking type air-supply - Google Patents
A kind of annular uiform section current equalizer of cylinder wall sticking type air-supply Download PDFInfo
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- CN104990239B CN104990239B CN201510260630.7A CN201510260630A CN104990239B CN 104990239 B CN104990239 B CN 104990239B CN 201510260630 A CN201510260630 A CN 201510260630A CN 104990239 B CN104990239 B CN 104990239B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
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Abstract
The invention discloses a kind of cylinder wall sticking type air-supply annular uiform section current equalizer, including blast pipe and housing, the housing is the circular cylinder of upper end closed；Housing is enclosed on applied cylinder outside and the inner cylinder inwall of housing is close to cylindrical body outer wall；Blast pipe is arranged on the upper end of housing and the axis of blast pipe and the axis of housing intersect vertically, and blast pipe communicates with the inside of housing；Being horizontally disposed with the axial direction of the housing interior edge housing has 2~6 pieces of toroidal membranes, and these toroidal membranes are from top to bottom disposed alternately on the outer tube inner wall and inner tank theca of housing, so as to be axially formed a cross section alternately expansion and the passage reduced in housing interior edge housing.The present invention improves the air-out even results of annular bar seam air outlet, and vertically downward, and ambient air is less mixes in direction, and the lifting face of cylinder attaches the validity of air-supply, suitable for volumed space building, and is not limited by application.
Description
Technical field
It is more particularly to a kind of to be applied to cylinder wall sticking type the present invention relates to a kind of annular uiform section balanced ventilation device
The current equalizer of air-supply, the device are applied to the air conditioner in the special building such as civilian and industrial building, subway, power station space
System.
Background technology
On the premise of air outlet initial momentum is certain, wall attachment jet air supply pattern can deliver to the air after processing farther out
Region, expand sphere of action of the air-supply in space.Meanwhile study and also shown that wall attachment jet can be reduced effectively
Directly blow " blowing feeling " that workspace personnel are brought.Therefore, wall attachment jet air vent mode is in building ventilation, air-conditioning system
It is widely used.
At present, the top plate wall attachment jet under mixed ventilation pattern is using relatively broad.But under this air supply mode, people employee
It is often positioned in as area in return air or air exhaust environment, sanitary condition is poor, and air-supply efficiency is relatively low.In order to overcome this attaching
The problem of pattern is present, domestic and international researcher propose based on the vertical wall of side wall attach on put replacement aeration pattern
And top plate wall attachment jet pattern.Wherein, based on being put in the vertical wall attaching of side wall in replacement aeration pattern, metope palpus is attached
For the interior wall influenceed without hot-fluid, and metope answers flat smooth, clear to influence etc., and this make it that the application of the pattern is limited
System；In addition, the pattern requires that air-supply separates with side wall, turned into after workspace, there are enough extension diffusions forward along ground
Ability, room most areas is covered as far as possible.And top plate wall attachment jet pattern requires that air-supply can have been formed with top plate substantially
It is complete to attach, reach to sidewalls, then turn and enter workspace；Therefore, above two pattern can be only applied to office, hotel
The less building of the depth such as guest room.And do not reached for the volumed space buildings such as market, subway station, the air-supply of top plate wall attachment jet pattern
It will be come off to before to sidewalls with top plate, in advance into workspace；And based on side wall attach on put replacement aeration turn after
Extend along ground limited in one's ability, it is impossible to cover the most areas of large space.
Therefore in large space, above two air supply pattern can not reach design effect.In consideration of it, research and development one kind can have
Effect eliminates above-mentioned air supply mode drawback, and is applied to the attaching air supply pattern of volumed space building with regard to particularly necessary.
The content of the invention
For defect present in above-mentioned prior art or deficiency, it is an object of the present invention to propose a kind of cylindrical wall
The annular uiform section current equalizer of face sticking type air-supply, to form the air vent mode attached based on cylinder wall, is solved above-mentioned existing
There is the problem of being limited by application present in technology and be not suitable for volumed space building.
To achieve these goals, the present invention, which adopts the following technical scheme that, is solved：
A kind of air-supply of cylinder wall sticking type annular uiform section current equalizer, including blast pipe and housing, the housing
For the circular cylinder of upper end closed；Housing is enclosed on applied cylinder outside and the inner cylinder inwall of housing is close to cylindrical body outer wall；
Blast pipe is arranged on the upper end of housing and the axis of blast pipe and the axis of housing intersect vertically, blast pipe and housing it is interior
Portion communicates；
Being horizontally disposed with the axial direction of the housing interior edge housing has 2~6 pieces of toroidal membranes, and these toroidal membranes are by up to
Under be disposed alternately on the outer tube inner wall and inner tank theca of housing, so as to housing interior edge housing be axially formed a cross section alternating
The passage for expanding and reducing.
Further, has a noise elimination heat-insulation layer on the outer drum outer wall of the housing.
Further, in addition to the toroidal membrane of topmost in housing, the interval of remaining toroidal membrane is identical, be 50~
150mm。
Further, in addition to the toroidal membrane of topmost, the width of remaining toroidal membrane is equal, is 150~400mm.
Further, the bottom of the housing is provided with an annular oriffice, is evenly distributed with the annular oriffice multiple
Through hole.
Further, the aperture of through hole is 1~3mm on the annular oriffice, and annular oriffice percent opening is 20%~30%.
Further, the vertical distance scope between toroidal membrane of the annular oriffice away from bottom in housing is taken as 50
~150mm.
Further, the lower end of the housing extends to form an annular for one week to the axis direction of housing in the horizontal direction
Water conservancy diversion arcs plate, horizontal segment, segmental arc and the vertical section that annular water conservancy diversion arcs plate is integrated by designing form；And the annular water conservancy diversion arcs plate
Certain gap is left between the inner tank theca of housing, forms annular bar seam air outlet.
Further, vertical distance of the annular oriffice away from annular bar seam air outlet is wind outlet section, and wind outlet section includes wind outlet area
Domain and diversion section；Air-out regional extent is 50~150mm；Water conservancy diversion segment limit is 60~100mm.
Further, the annular bar seam air outlet horizontal width is 20~80mm.
The cylinder wall sticking type of the present invention is blown can be used in cylinder wall sticking type with annular uiform section current equalizer
Air-supply, on the basis of current equalizer shell dimension is not changed, by the introducing of toroidal membrane and annular oriffice, increases air
Flow distance so that dynamic pressure is converted into static pressure proportion increase, improves the uniformity of air-out, reduces equipment operation noise,
Preferably meet the requirement of annular bar seam air outlet.The air-out that the present invention improves annular bar seam air outlet is uniformly imitated
Fruit, vertically downward, and ambient air is less mixes in direction, and the lifting face of cylinder attaches the validity of air-supply, suitable for big empty
Between build, and do not limited by application.
Brief description of the drawings
Fig. 1 is the top view and front view of structure of the present invention and air flow；Wherein, Fig. 1 (a) is cross-sectional view, Fig. 1
(b) it is vertical tangent plane figure.
Fig. 2 is to be based on cylinder wall sticking type air supply pattern air current composition schematic diagram；
Fig. 3 is annular bar seam air outlet section air-out analysis of Uniformity experiment measuring point selection figure；
Current equalizer of the present invention (toroidal membrane number is 6) and traditional hollow housing are used when Fig. 4 is different air supply velocities
Plenum chamber annular bar seam air port section axis velocity distribution curve compares figure；
Current equalizer of the present invention (toroidal membrane number is 4) and traditional hollow housing are used when Fig. 5 is different air supply velocities
Plenum chamber annular bar seam air port section axis velocity distribution curve compares figure；
Current equalizer of the present invention (toroidal membrane number is 2) and traditional hollow housing are used when Fig. 6 is different air supply velocities
Plenum chamber annular bar seam air port section axis velocity distribution curve compares figure；
Fig. 7 is the scale diagrams of the device of embodiment one.Wherein, Fig. 1 (a) is cross-sectional view, and Fig. 1 (b) is vertical tangent plane
Figure.The present invention is described in further detail for the embodiment provided below in conjunction with accompanying drawing and inventor.
Embodiment
Based on the requirement of building structure load-bearing, cylinder all be present in most of buildings.They are located at building interior, distribution
It is even, surface is smooth and often no barrier blocks.If can be combined wall attachment jet with this kind of cylinder, not only meet above-mentioned
It is required that, good appearance, moreover it is possible to reduce the influence of building type, building height to air supply pattern.The cylinder wall of the present invention attaches
Formula air-supply use annular uiform section current equalizer, for solve existing for current wall attachment jet air supply pattern by application limit and
Not the problem of not being suitable for volumed space building.
The cylinder wall sticking type of the present invention is blown with the structure of annular uiform section current equalizer as shown in figure 1, including entering
Airduct 2 and housing 3, wherein, the housing 3 is the circular cylinder of upper end closed；Housing 3 be enclosed on applied cylinder 5 it is outer and
The inner cylinder inwall of housing 3 is close to the outer wall of cylinder 5.
The blast pipe 2 is a rectangular air duct, and one end connecting fan of blast pipe 2, the other end is installed in the upper end of housing 3
And the axis of blast pipe 2 and the axis of housing 3 intersect vertically, blast pipe 2 communicates with the inside of housing 3.
Being horizontally disposed with the axial direction of the interior edge housing 3 of housing 3 has 2~6 pieces of toroidal membranes 9, and these toroidal membranes 9 are by up to
Under be disposed alternately on the outer tube inner wall and inner tank theca of housing 3, so as in the interior edge housing 3 of housing 3 be axially formed a cross section
The passage for alternately expanding and reducing；Thus, the flow distance of air in housing 3 is increased so that dynamic pressure is converted into the ratio of static pressure
Example greatly increases.
Aforesaid way can be applied to cylinder wall sticking type and blow, and solve application of the prior art limitation and not
The problem of suitable for volumed space building.
Optionally, has a noise elimination heat-insulation layer 10 on the outer drum outer wall of the housing 3；The noise elimination heat-insulation layer 10 uses one
Determine the blanket of glass wool of thickness, polyethylene or other there is the material of noise elimination function.Thereby, it is possible to reducing sky in housing 3
While flow of air hits the concussion brought with turbulence and whistler, completely cut off the heat exchange of air and surrounding environment in housing 3, rise
To good insulation effect.
Optionally, in addition to the toroidal membrane of topmost, the interval of remaining toroidal membrane 9 is identical.The spacing distance is to air-supply
Important influence be present in main body turbulivity, current equalizer resistance and plant bulk.Spacing distance is bigger, and air-supply main body turbulivity is got over
It is low, current equalizer resistance is smaller, but plant bulk increase, weight increase, the fixed difficulty increase of installation；Spacing distance is smaller, send
Wind main body turbulivity is higher, energy dissipation increase.Current equalizer resistance increases simultaneously, can be produced in flow process of blowing certain
Noise.Verified by experimental exploration, dividing plate appropriate interval distance range is 50~150mm.
Optionally, in addition to the toroidal membrane of topmost, the width of remaining toroidal membrane 9 is equal.The spacer width is same
Important influence be present to air-supply main body turbulivity, current equalizer resistance and plant bulk.In view of the size at each position
Verify that dividing plate suitable width scope is 150~400mm with problem, while by experimental exploration.
Optionally, the bottom of the housing 3 is provided with an annular oriffice 8, is evenly distributed with the annular oriffice 8 multiple
Through hole, the setting of annular oriffice 8 reduces the turbulance of air-flow, while plays a part of noise elimination.Enter while noise is reduced
One step improves the ratio that dynamic pressure is converted into static pressure, makes air-out uniformity more preferable, preferably meets the air-out requirement of current equalizer.
Optionally, on annular oriffice 8 in the aperture practical application of through hole it is 1~3mm.Optionally, the percent opening of annular oriffice 8
For 20%~30%.It has been investigated that under identical percent opening, aperture is smaller, air-out uniformity is better, but blows through via
Resistance is bigger during plate, otherwise rule is opposite；Under identical aperture, percent opening is bigger, and air-out uniformity is better, resistance is smaller, but
Orifice plate manufacture craft requires the increase of higher, cost, and when percent opening increases to more than 50%, orifice plate validity will reduce.Phase
Under same aperture, percent opening is smaller, and air-out uniformity reduces, resistance increase, but orifice plate is easy to make and installs fixation.
Region is is flowed in space in annular oriffice 8 and housing 3 between the toroidal membrane 9 of bottom, in uniform airflow
While dynamic, dynamic pressure is further converted into static pressure.Optionally, by toroidal membrane 9 of the annular oriffice 8 away from bottom in housing 3
Between vertical distance scope be taken as 50~150mm, it is identical with the spacing distance selection range and concrete foundation of toroidal membrane 9.
Optionally, the lower end of housing 3 extends to form an annular water conservancy diversion for one week to the axis direction of housing 3 in the horizontal direction
Arc plate 7, horizontal segment, segmental arc and the vertical section that annular water conservancy diversion arcs plate 7 is integrated by design form；And the annular water conservancy diversion arcs plate 7
Certain gap is left between the inner tank theca of housing 3, forms annular bar seam air outlet 4.The lower section of annular oriffice 8 is air-out
Region, the wind in housing 3 is in the presence of the stop of annular water conservancy diversion arcs plate 7 and water conservancy diversion, the air-flow of all directions in air-out region
Order enters air outlet 4, and sends out and spread straight down along cylindrical outer wall face 6, progresses into person works area.
Vertical distance of the annular oriffice 8 away from annular bar seam air outlet 4 is wind outlet section, and wind outlet section includes air-out region and water conservancy diversion
Section；Wind outlet section height is bigger, and air outlet angle more can meet design requirement, but cost increases, aesthetic property reduces, otherwise rule phase
Instead.Air-out region refers to the vertical distance of horizontal segment of the annular oriffice 8 away from annular water conservancy diversion arcs plate 7, is verified by experimental exploration, should
Distance takes 50~150mm；Diversion section is vertical distance of the horizontal segment of finger ring shape water conservancy diversion arcs plate 7 away from annular bar seam air outlet 4, is passed through
Overtesting explores checking, and the distance takes 60~100mm；Therefore the scope of wind outlet section is 110~250mm.
Optionally, the horizontal width of annular bar seam air outlet 4 is mainly with going out wind velocity, air outlet homogeneity of fault plane,
Air outlet turbulivity is relevant.Under identical air output, horizontal width is smaller, goes out that wind velocity is bigger, air-out homogeneity of fault plane is better, but
Air outlet turbulivity is higher, energy dissipation increase, otherwise rule is opposite.Verified by experimental exploration, the annular bar seam water of air outlet 4
The OK range of flat width is 20~80mm.
Optionally, circular arc is largely appeared in using the form that most, water conservancy diversion effect are best in all shaped nozzle arcs
Among the local resistance components such as the elbow of ventilation and air conditioning system, threeway.It is described simultaneously in view of the downward requirement of air outlet vertical
The segmental arc of annular water conservancy diversion arcs plate 7 is the 1/4 of circle.
For the device of the present invention when making, all junctions of its each part use glass cement sealing off gap, to prevent
Air in housing 3 air outlet 4 is stitched from annular bar outside other positions to exosmosis.
The principle of the present invention is as follows：
As shown in Fig. 2 it is the cylinder wall sticking type air supply pattern air current composition schematic diagram using the present invention.Sent by blower fan
The high velocity air gone out is entered by the air inlet 1 of blast pipe 2, and then is horizontally entered into inside housing 3, empty in high velocity air such as Fig. 1
Shown in line arrow, point or so the uiform section annular passage of toroidal membrane formation of the both direction along housing 3 and topmost move,
After the rightmost side of housing 3 shown in Fig. 1 is mutually hit, part dynamic pressure is changed into static pressure；As follow-up air constantly pours in, air-flow is rear
The flow region being separated out by toroidal membrane 9 is downwardly into successively under continuous air push, and air-flow constantly hits shell in motion process
The wall of body 3 and the surface of toroidal membrane 9, dynamic pressure are progressively changed into static pressure, subsequently into annular oriffice 8 and adjacent annular dividing plate
Stream region between 9；As follow-up air constantly pours in, flow pressure in region and gradually rise, flow air in region and exist
Enter air-out region through annular oriffice 8 under pressure effect, dynamic pressure almost all is changed into static pressure, and airflow homogeneity obtains effectively
Lifting；Then the preferable air of uniformity is sent out vertically downward along annular water conservancy diversion arcs plate 7 by annular bar seam air outlet 4；Air-supply patch
The outside wall surface 6 for investing cylinder 5 flows downward, and is formed and attached with cylindrical outer wall face 6 in the presence of Coanda effect.Hereafter jet
Main body flows downward along outside wall surface 6, increases close to adverse pressure gradient during ground, and jet main body separates with cylinder 5, after hitting post angle
Direction switchs to level, is then formed and attached with ground, extends diverging flow forward along floor with the fan beam type of flow.
Because cylindrical wall faces " effect of seizing on both sides by the arms " of jet main body, air-supply and the mixing of surrounding air can be effectively reduced,
By more fresh airs and cold heat amount subregion, uniformly under deliver to workspace.Therefore, compared with mixed ventilation way, cylinder wall
The air-supply efficiency of wall attachment jet air supply pattern is higher, indoor air quality is more excellent, and similar replacement aeration is formed in workspace
Air current composition, effectively lift personnel's thermal comfort.Compared with replacement aeration mode, the air supply pattern up-fixing diffusers can be effective
The occupancy to the workspace useful space is reduced, and it is more attractive in appearance.Meanwhile wall attachment jet pattern can reduce cold wind blow-through human body and make
Into " blowing feeling ", and momentum air supply pattern can be applied to send hot blast operating mode.
To make the structure of the present invention and advantage clearer, the structure of the present invention is made further below in conjunction with accompanying drawing
Description.
Embodiment 1
Annular uiform section current equalizer experimental model is established according to actual use situation, using diameter 1000mm cylinder as should
With object, the diameter 1700mm of housing 3, total height 1080mm (wherein topmost annular passage is highly 300mm, 6 annulars every
5 flow regions that plate 9 is separated out highly are 100mm, and region height is flowed between annular oriffice 8 and adjacent annular dividing plate 9 and is
100mm, air-out region height are 100mm, and diversion section is highly 80mm, altogether 1080mm)；Topmost toroidal membrane width is
200mm, it is horizontally mounted along current equalizer annular passage bottom surface, remaining 5 width of toroidal membrane 9 is 250mm, away from topmost annular
Dividing plate is equidistantly horizontally mounted by 100mm；The width of annular oriffice 8 is 350mm, and percent opening 25.6%, the aperture of through hole takes
2mm, annular oriffice 8 are horizontally arranged at the 100mm distances away from foot toroidal membrane 9；The horizontal segment of annular water conservancy diversion arcs plate 7
Width is 300mm；The radius of segmental arc is 30mm, and segmental arc is 1/4 section of diameter 60mm circles, and high vertical of 50mm is connected under segmental arc
Section, the height of diversion section is 80mm；Air-out region height is 100mm；Therefore, annular oriffice 8 is away from the perpendicular of annular bar seam air outlet 4
Straight distance is that wind outlet section takes 180mm；The width of blast pipe 2 × a height of 300 × 300mm2, annular bar seam air outlet 4 width be
50mm, it is respectively 1.0,1.5 and 2.0m/s to go out wind velocity.
Attaching cylinder, current equalizer housing, toroidal membrane, annular oriffice, annular water conservancy diversion arcs plate, air inlet, blast pipe
Thickness is used to be made for 2.0mm galvanized steel plain sheet, deadener uses blanket of glass wool, thickness 10mm, is close to be attached to and flows
Device case madial wall.
In order to verify the uniformity of the annular uiform section current equalizer air-out of the present invention, it need to know that annular bar stitches air outlet section
VELOCITY DISTRIBUTION situation.With 30 degree it is interval for this, have chosen 12 measuring points on annular bar seam air outlet section axis, such as scheme
In 3 shown in square solid dot.Simultaneously in order to compared with traditional hollow housing static pressure case apparatus air port air-out uniformity, in phase
Same parameter sets condition, identical air-out boundary condition, under identical experiment method of testing, it is quiet further to test traditional hollow housing
The VELOCITY DISTRIBUTION on case apparatus air outlet section axis is pressed, is indicated in Fig. 4 using dotted line diagram form.
Square, triangle and circular solids point in Fig. 4 represent invention current equalizer ring when 1.0,1.5 and 2.0m/s respectively
Velocity amplitude at the measuring point of shape bar seam air outlet section axis 12, hollow dots represent that corresponding point position tradition hollow housing is quiet
Press the VELOCITY DISTRIBUTION of case apparatus.The horizontal dotted line that square, triangle and circular dot represent represents that air outlet is due and set respectively
Evaluation, that is, 1.0,1.5 and the 2.0m/s air supply velocity required.By the horizontal line value for testing obtained scatterplot value and design requirement
Deviation, come carry out invention current equalizer and traditional static pressure case apparatus air-supply accuracy judgement.
When designing air supply velocity 1.0m/s, during using current equalizer of the present invention, at the measuring point of annular tuyere axis 12
Velocity magnitude is essentially identical, is distributed in the range of 0.95-1.15m/s, differs 15.0% with desin speed maximum, average deviation is
5.8%, wind pushing performance preferably meets actual requirement；During using traditional hollow housing static pressure case apparatus, measuring point VELOCITY DISTRIBUTION
In the range of 1.05-1.23, and desin speed is maximum differs 23.0%, average deviation 14.9%, and the speed at 12 measuring points
Degree is all higher than desin speed, further study show that, now measuring point speed is stitched among the presentation of air outlet width along annular bar
VELOCITY DISTRIBUTION pattern high, both sides are low, this is also current bar seam air port common problem.And use the stream dress of the present invention
Postpone, dynamic pressure is blown into transformation in order to which static pressure is blown to the full extent, thus it is relative along bar seam air port width VELOCITY DISTRIBUTION
It is more uniform, it can be good at the air-out requirement for meeting design.In a word, for design air-out accuracy, air supply velocity is designed
During 1.0m/s, during using current equalizer of the present invention, actually go out wind velocity and design deviation and be reduced to 5.8% by 14.9%, it is accurate
True property lifting 156.9%.
When designing air supply velocity 1.5m/s and 2.0m/s, the speed distribution regularities at measuring point are similar with 1.0m/s.Using this
During invention current equalizer, measuring point speed is respectively distributed in the range of 1.45-1.70m/s and 1.96-2.33m/s, respectively with design
The maximum difference 11.3% and 16.5% of speed.12 measuring point speed and design load average deviation are respectively 5.7% and 6.4%；Adopt
During with traditional hollow housing static pressure case apparatus, measuring point speed is respectively distributed to 1.56-1.84m/s and 2.00-2.61m/s scopes
It is interior, differ 22.7% and 30.5% with desin speed maximum respectively.12 measuring point speed are respectively with design load average deviation
15.2% and 16.6%.During using current equalizer of the present invention, when designing air supply velocity 1.5m/s and 2.0m/s, air-out accuracy point
Indescribably rise 166.7% and 159.4%.
Utilize air port uniformity calculation formula simultaneouslyAir port air-out section axis is stitched with along annular bar
Air speed value on line at 12 measuring points, it is calculated using after the annular uiform section current equalizer of the present invention, going out wind velocity is respectively
1.0th, during 1.5 and 2.0m/s, annular bar seam air outlet inhomogeneities is respectively 4.4%, 4.8% and 5.0%, traditional hollow housing
Static pressure case apparatus air outlet inhomogeneities is respectively 4.9%, 5.3% and 7.5%, and the former carries respectively with respect to the latter's air-out uniformity
Rise 11.4%, 10.4% and 50.0%.For synthesis, design air supply velocity is bigger, and invention current equalizer uniformity is better.
Embodiment 2
Other are same as Example 1, and toroidal membrane number is 4 (corresponding current equalizer overall case height 880mm).Design
When air supply velocity is respectively 1.0,1.5 and 2.0m/s, during using current equalizer of the present invention, 12 measuring point speed are maximum with design load
Difference is respectively 10.0%, 12.7% and 16.0%, average deviation difference 5.4%, 6.8% and 8.1%；Using traditional hollow shell
During body static pressure case apparatus, 12 measuring point speed are respectively 29.3%, 27.4% and 43.9% with maximum differ of design load, average inclined
Difference other 16.5%, 15.7% and 18.9%.The former lifts 205.6% respectively compared with the latter's air-out accuracy, 130.9% He
133.3%.
In terms of the annular bar seam air-out uniformity of air outlet 4, using the annular uiform section current equalizer of the present invention, go out wind velocity point
Not Wei 1.0,1.5 and 2.0m/s when, annular bar seam the inhomogeneities of air outlet 4 be respectively 5.1%, 5.4% and 6.9%, tradition in
Empty capsid static pressure case apparatus air outlet inhomogeneities is respectively 6.6%, 6.7% and 12.1%, and the former is uniform with respect to the latter's air-out
Property lifts 29.4%, 24.1% and 75.4% respectively.
Embodiment 3
Other are same as Example 1, and toroidal membrane number is 2 (corresponding current equalizer overall case height 680mm).Design
When air supply velocity is respectively 1.0,1.5 and 2.0m/s, during using current equalizer of the present invention, 12 measuring point speed are maximum with design load
Difference is respectively 7.0%, 10.0% and 18.5%, average deviation difference 4.2%, 5.5% and 8.4%；Using traditional hollow shell
During body static pressure case apparatus, 12 measuring point speed are respectively 44.0%, 62.7% and 79.1% with maximum differ of design load, average inclined
Difference other 20.3%, 22.2% and 27.7%.The former lifts 383.3% respectively compared with the latter's air-out accuracy, 303.6% He
229.8%.
In terms of annular bar seam air port air-out uniformity, using the annular uiform section current equalizer of the present invention, go out wind velocity difference
For 1.0,1.5 and 2.0m/s when, annular bar seam air outlet inhomogeneities be respectively 3.9%, 5.5% and 8.6%, traditional hollow shell
Body static pressure case apparatus air outlet inhomogeneities is respectively 15.4%, 16.2% and 19.9%, and the former is with respect to the latter's air-out uniformity
294.9%, 194.5% and 131.4% is lifted respectively.
To sum up shown, in terms of air-out accuracy, toroidal membrane number is fewer (to be corresponded to current equalizer overall case height to get over
It is low), when being blown using the low wind speed of the annular uiform section current equalizer of the present invention, the relatively conventional hollow housing plenum chamber of air-out accuracy
Device lifting is more；In terms of air-out uniformity, toroidal membrane number is fewer, during using annular uiform section current equalizer of the invention,
The relatively conventional hollow housing static pressure case apparatus lifting of air-out uniformity is more.Meanwhile design air supply velocity is bigger, current equalizer exists
Effect is better in terms of uniformity lifting.
Claims (9)
1. a kind of air-supply of cylinder wall sticking type annular uiform section current equalizer, including blast pipe and housing, it is characterised in that
The housing is the circular cylinder of upper end closed；Housing is enclosed on applied cylinder outside and the inner cylinder inwall of housing is close to cylinder
External wall；Blast pipe be arranged on housing upper end and the axis of blast pipe and the axis of housing intersect vertically, blast pipe with
The inside of housing communicates；
Being horizontally disposed with the axial direction of the housing interior edge housing has 2 ~ 6 pieces of toroidal membranes, and these toroidal membranes are from top to bottom handed over
For being arranged on the outer tube inner wall and inner tank theca of housing, alternately expand so as to be axially formed a cross section in housing interior edge housing
With the passage of diminution；
In addition to the toroidal membrane of topmost in housing, the interval of remaining toroidal membrane is identical, is 50 ~ 150mm.
2. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 1, it is characterised in that described
Has a noise elimination heat-insulation layer on the outer drum outer wall of housing.
3. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 1, it is characterised in that except most
Outside the toroidal membrane on top, the width of remaining toroidal membrane is equal, is 150 ~ 400mm.
4. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 1, it is characterised in that described
The bottom of housing is provided with an annular oriffice, and multiple through holes are evenly distributed with the annular oriffice.
5. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 4, it is characterised in that described
The aperture of through hole is 1 ~ 3mm on annular oriffice, and annular oriffice percent opening is 20% ~ 30%.
6. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 4, it is characterised in that described
Vertical distance scope between toroidal membrane of the annular oriffice away from bottom in housing is taken as 50 ~ 150mm.
7. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 4, it is characterised in that described
Extend to form an annular water conservancy diversion arcs plate, annular water conservancy diversion arcs plate to the axis direction of housing in the horizontal direction within one week in the lower end of housing
Horizontal segment, segmental arc and the vertical section being integrated by design form；And between the annular water conservancy diversion arcs plate and the inner tank theca of housing
Certain gap is left, forms annular bar seam air outlet.
8. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 7, it is characterised in that described
Vertical distance of the annular oriffice away from annular bar seam air outlet is wind outlet section, and wind outlet section includes air-out region and diversion section；Wind outlet area
Domain scope is 50 ~ 150mm；Water conservancy diversion segment limit is 60 ~ 100mm.
9. the annular uiform section current equalizer of cylinder wall sticking type air-supply as claimed in claim 7, it is characterised in that described
Annular bar seam air outlet horizontal width is 20 ~ 80mm.
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| CN105526197B (en) * | 2015-12-24 | 2017-10-27 | 宁波方太厨具有限公司 | A kind of noise reduction of centrifugal blower, oil-filtering apparatus |
| CN108592189B (en) * | 2018-04-17 | 2023-06-30 | 中铁第四勘察设计院集团有限公司 | Attached efflux air supply arrangement of arc post department that combines fan coil |
| CN108917171B (en) * | 2018-08-07 | 2023-07-04 | 河南工业大学 | Warm air device with air purification function and suitable for cylinder |
| CN109059273B (en) * | 2018-08-07 | 2023-07-04 | 河南工业大学 | Warm air device with air purifying function suitable for polygonal upright post |
| CN112923542B (en) * | 2020-12-08 | 2022-03-08 | 西安建筑科技大学 | Adjustable guide plate air supply method and device with attached square column wall surface |
| CN112902423B (en) * | 2021-02-06 | 2022-07-08 | 西安建筑科技大学 | Circular flow dispersing device |
| CN113510130A (en) * | 2021-06-08 | 2021-10-19 | 中车（天津）轨道交通设备有限公司 | Current equalizer |
| CN114396682A (en) * | 2021-12-21 | 2022-04-26 | 江苏荣邦机械制造有限公司 | Subway station air supply arrangement |
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