CN203146366U - Radial-acceleration mixed-flow fan - Google Patents
Radial-acceleration mixed-flow fan Download PDFInfo
- Publication number
- CN203146366U CN203146366U CN 201320003316 CN201320003316U CN203146366U CN 203146366 U CN203146366 U CN 203146366U CN 201320003316 CN201320003316 CN 201320003316 CN 201320003316 U CN201320003316 U CN 201320003316U CN 203146366 U CN203146366 U CN 203146366U
- Authority
- CN
- China
- Prior art keywords
- blower fan
- blade
- meridian
- flow
- mixing blower
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a radial-acceleration mixed-flow fan comprising a fan cylinder and a set of a plurality of blades arranged in the fan cylinder. Each blade is twisted and provided with radial-acceleration. The plurality of blades are evenly distributed and fixed to a inner wheel housing. The radial-acceleration mixed-flow fan is compact in structure, small in size and light in weight. Compared with a centrifugal fan, the space is saved, and mounting is facilitated. A detected fan total pressure average value reaches 101.22% of a sample value while the sample requirement of five working condition air capacities are met.
Description
Technical field
The utility model relates to a kind of flow-mixing blower fan, and particularly a kind of meridian accelerates flow-mixing blower fan.
Background technique
Present domestic flow-mixing blower fan mostly is the mixed-flow low noise, has the characteristics of energy-saving ventilating air, is a kind of novel fan between axial flow and centrifugal fan.This blower fan can be widely used in industry, civilian and ventilation that public building is indoor.(performance is selected the performance of showing to refer under the standard state for use but because the fan performance that each manufacturer produces differs, fan performance can select for use table to consult in performance), the blower fan total head mean value that records by 5 applying working condition air quantity and the total head of sample regulation, too far away (blower fan acceptable product performance total head value under rated flow of preferably dispatching from the factory is no more than with the sample gap
+5%).Actual measured value is best reaches 81.46% of sample value, and next is respectively 75.04%, 70.88%, and 46.86%, 34.52%.Therefore in use, when the pressure of existing blower fan is lower than the sample force value, is difficult to overcome the pipe-line system resistance and can only reduces air quantity, the more low then air quantity of pressure is more little, so fan performance is relatively poor.
The model utility content
The technical problems to be solved in the utility model is in order to overcome the defective of prior art, provides a kind of meridian to accelerate flow-mixing blower fan, and this flow-mixing blower fan has real meridian acceleration performance.
The utility model is to solve above-mentioned technical problem by following technical proposals: a kind of meridian accelerates flow-mixing blower fan, it comprises: a blower fan cylindrical shell, one is sheathed on the some blades in the described blower fan cylindrical shell, its characteristics are, each described blade is a twisted blade with meridian acceleration, and hub is uniform affixed in some described blades and.
Meridian accelerates to be the technical term of related domain, and also have specifically in the ventilator handbook as merchant Jingtai chief editor and tell about: the sectional area that meridian accelerates the axial-flow fan blade runner reduces gradually, and air-flow is through behind the blade, and its meridian speed obtains increasing.During use, by the electric motor starting blade, under the acting in conjunction of several blades with meridian acceleration characteristics, in whole gas flow process, obtained the appreciation of pressure, thereby satisfying the pressure that has increased blower fan under the prerequisite of air quantity, and improving total pressure efficiency and the static pressure efficiency of blower fan.
Preferably, described twisted blade is formed by an arc surface and Plane intersects, is the boundary line with the upper extreme point of the back of the lower extreme point of the front of described twisted blade and this twisted blade, is this crooked arc surface on the described boundary line, is this plane under the described boundary line.So just can form two kinds of different angles (two kinds of different amount here refer to root angle as described below and tip angle), can make air-flow enter the wind collecting unit of tool noise elimination function fast, and accelerate to enter in the runner of blade.
Preferably, a side of described interior hub connects in aggregates with the wind collecting unit of a tool silencing function, and the opposite side of described interior hub is connected with a motor.
Preferably, described in hub be shaped as a cone barrel type, the tapering of the root of this blade is identical with interior hub tapering.Adopt taper shape, can accelerate flowing of air-flow.
Preferably, the afterbody of described interior hub is affixed by a reel fixed plate and a reel, and described reel and this motor are rotationally connected.
Preferably, the end of a hub affixed fluid dividing cover also in described.
Preferably, described interior hub is connected by the hexagon head tapping screw with this fluid dividing cover.
Preferably, the root of described blade forms different root angles and tip angle respectively with the top of blade, and this root angle is between 50 degree ~ 58 degree; The ratio at this tip angle and this root angle is greater than 0, less than 0.8.
Preferably, the ratio at this tip angle and this root angle is 0.74.After tested, also can be about 0.74 sizes.Under this kind angle ratio, blade has preferable compressor flow and pressure, and energy-saving effect is obvious.
Preferably, the quantity of described blade is 8.In order to accelerate the flow velocity of air-flow in the blade and blade road, blade quantity should not lack, and length of blade should not be lacked, so the quantity of blade is 8.
Positive progressive effect of the present utility model is: the utility model can realize that real meridian accelerates, and air-flow is through behind the blade, and the meridian speed of blower fan just obtains increasing.Flow-mixing blower fan of the present utility model, compact structure, volume is little, in light weight.Compare with centrifugal blower, save the space, easy for installation.This blower fan is when satisfying 5 operating mode air quantity of sample regulation, and the blower fan total head mean value that records reaches 101.22% of sample value.In addition, flow-mixing blower fan of the present utility model can conveniently be made into the fire-fighting smoke evacuation flow-mixing blower fan that can run well 45 minutes again under the ambient temperature about 300 degree.
Description of drawings
Fig. 1 is the structural drawing of the utility model one embodiment's flow-mixing blower fan.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is fluid dividing cover among Fig. 1 and the erection drawing of blade.
Fig. 4 is the structural drawing of the blade among Fig. 1.
Fig. 5 is the plane outspread drawing of the blade among Fig. 4.
Fig. 6 is the blade shaping figure along A among Fig. 5 to arrow.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates by reference to the accompanying drawings.
Embodiment
Meridian accelerates axial-flow blower flow-mixing blower fan just, and this blower fan is exactly the combination of centrifugal blower and axial-flow blower, thus be designed to this blower fan by this principle, particularly to the design of blade:
To shown in Figure 6, the flow-mixing blower fan in the utility model mainly is made up of with parts such as suspension ring 9, bases 10 with the motor cylindrical shell 4 that is positioned at the outlet port, motor 5, blower fan cylindrical shell 7, outer hub 8 fluid dividing cover 12, interior hub 2, eight blades 3, reel fixed plate 6, reels 11, the wind collecting unit 1 that is positioned at inlet referring to Fig. 1.8 air-foil blades 3 with distortion of meridian acceleration characteristics are welded on the interior hub 2.The tapering of the root of this blade 3 is identical with the tapering of interior hub 2.
In order to accelerate the flow velocity of air-flow in the blade and blade road, blade quantity should not lack, and length of blade should not be lacked, so the quantity of blade is eight.Interior hub 2 adopts cone barrel type, connects with the wind collecting unit 1 of tool silencing function to form an integral body.Through dynamic balancing check and overspeed test, adopt the flow-mixing blower fan of blade of the present utility model to have good aerodynamic quality.
Eight blades 3 and interior hub 2 uniform being welded to connect, interior hub 2 is welded to connect with reel fixed plate 6, and reel 11 is connected with reel fixed plate 6 usefulness standard piece, and fluid dividing cover 12 is connected with interior hub 2 usefulness hexagon head tapping screws (GB5285-85).
Guide plate 13(also is equipped with as shown in Figure 1 in the outlet port of blower fan), the air-flow that tool is good like this distributes, and pressure stability.
Referring to the blade shaping figure of arc surface bending (radius R) among the blade plane unfolded drawing among Fig. 5 and Fig. 6 with Plane intersects, be boundary line 33 with the lower extreme point of blade 3 fronts and the upper extreme point of blade back, be arc surface 31 bendings on the boundary line 33, it is plane 32 under the boundary line 33, formation twisted blade 3 is intersected on the two sides, therefore forms two kinds of different amount at the root of blade and the top of blade: root angle a and tip angle b.Also form a twist angle c when in addition, the arc surface of blade twists.Find that after tested when root angle a gets angle values between 50 degree ~ 58 degree, and the ratio of this tip angle b and this root angle a is when 0.74 left and right sides, then flow-mixing blower fan has higher energy-saving effect.Determine the height of air intake pressure because of the size of two kinds of different amount (root angle a, tip angle b) of blade 3.The tapering of root of blade is identical with the tapering of interior hub, and the taper design of interior hub must be rationally.
During use, by the electric motor starting blade rotation, by arc surface 31 crooked and plane 32 intersect distortion and form under the acting in conjunction of eight blades of two kinds of different amount (root angle a, tip angle b), pass through blade passage again, enter nine uniform guide plate 13(fast as shown in Figure 1) runner in.In whole gas flow process, obtain the appreciation of pressure, thereby satisfied the pressure that has increased blower fan under the prerequisite of air quantity, and improved total pressure efficiency and the static pressure efficiency of blower fan.
Compared with prior art, the beneficial effects of the utility model are:
Flow-mixing blower fan of the present utility model, compact structure, volume is little, in light weight.Compare with centrifugal blower, save the space, easy for installation.When satisfying 5 operating mode air quantity of sample regulation, the blower fan total head mean value that records reaches 101.22% of sample value.
In addition, flow-mixing blower fan of the present utility model can conveniently be made into the fire-fighting smoke evacuation flow-mixing blower fan that can run well 45 minutes again under the ambient temperature about 300 degree.
Though more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art can make numerous variations or modification to these mode of executions under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection domain of the present utility model.
Claims (10)
1. a meridian accelerates flow-mixing blower fan, and it comprises: a blower fan cylindrical shell, and one is sheathed on the some blades in the described blower fan cylindrical shell, it is characterized in that, and each described blade is a twisted blade with meridian acceleration, and some described blades are uniform affixed with an interior hub.
2. meridian as claimed in claim 1 accelerates flow-mixing blower fan, it is characterized in that, described twisted blade is formed by an arc surface and Plane intersects, upper extreme point with the back of the lower extreme point of the front of described twisted blade and this twisted blade is the boundary line, being this crooked arc surface on the described boundary line, is this plane under the described boundary line.
3. meridian as claimed in claim 1 accelerates flow-mixing blower fan, it is characterized in that, a side of described interior hub connects in aggregates with the wind collecting unit of a tool silencing function, and the opposite side of described interior hub is connected with a motor.
4. meridian as claimed in claim 3 accelerates flow-mixing blower fan, it is characterized in that, described in hub be shaped as a cone barrel type, the tapering of the root of this blade is identical with interior hub tapering.
5. meridian as claimed in claim 4 accelerates flow-mixing blower fan, it is characterized in that, the afterbody of described interior hub is affixed by a reel fixed plate and a reel, and described reel and this motor are rotationally connected.
6. meridian as claimed in claim 1 accelerates flow-mixing blower fan, it is characterized in that, the end of described interior hub is an affixed fluid dividing cover also.
7. meridian as claimed in claim 6 accelerates flow-mixing blower fan, it is characterized in that, described interior hub is connected by the hexagon head tapping screw with this fluid dividing cover.
8. meridian as claimed in claim 1 accelerates flow-mixing blower fan, it is characterized in that the root of described blade forms different root angles and tip angle respectively with the top of blade, and this root angle is between 50 degree ~ 58 degree; The ratio at this tip angle and this root angle is greater than 0, less than 0.8.
9. meridian as claimed in claim 8 accelerates flow-mixing blower fan, it is characterized in that the ratio at this tip angle and this root angle is 0.74.
10. accelerate flow-mixing blower fan as any described meridian in the claim 1 to 9, it is characterized in that the quantity of described blade is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003316 CN203146366U (en) | 2013-01-05 | 2013-01-05 | Radial-acceleration mixed-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003316 CN203146366U (en) | 2013-01-05 | 2013-01-05 | Radial-acceleration mixed-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146366U true CN203146366U (en) | 2013-08-21 |
Family
ID=48973894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320003316 Expired - Fee Related CN203146366U (en) | 2013-01-05 | 2013-01-05 | Radial-acceleration mixed-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912509A (en) * | 2013-01-05 | 2014-07-09 | 上海涌华通风设备有限公司 | Meridionally-accelerated mixed-flow fan |
-
2013
- 2013-01-05 CN CN 201320003316 patent/CN203146366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912509A (en) * | 2013-01-05 | 2014-07-09 | 上海涌华通风设备有限公司 | Meridionally-accelerated mixed-flow fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201757064U (en) | Mixed-flow blower | |
| CN107956721A (en) | Multiatage axial flow ventilation blower | |
| CN103471150A (en) | Axially spiral exhaust type range hood applying cold accelerant decomposition technique | |
| CN203130602U (en) | Cross-flow fan for air conditioner, cross-flow blower and air conditioner | |
| CN101363450B (en) | Blade wheel structure of multiple wing type centrifugal blower fan | |
| CN203584898U (en) | Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan | |
| CN203146366U (en) | Radial-acceleration mixed-flow fan | |
| CN110552910A (en) | Wind wheel and centrifugal fan | |
| CN209539615U (en) | A kind of Unpowered ventilation device test measurement platform | |
| CN105179275A (en) | Novel mixed flow pipeline fan | |
| CN210769513U (en) | Wind wheel and centrifugal fan | |
| CN209340209U (en) | Asymmetric both sides air inlet impeller, centrifugal blower and kitchen ventilator | |
| CN103629156B (en) | A kind of central air conditioner outdoor unit but axial-flow blower of low-noise high-efficiency | |
| CN103912509A (en) | Meridionally-accelerated mixed-flow fan | |
| CN207701462U (en) | A kind of axial flow blower | |
| CN2451783Y (en) | Axial flow fan blades | |
| CN109595197A (en) | A kind of blower | |
| CN205956019U (en) | High -efficient silence turbine | |
| CN102979764A (en) | Axial flow fan blade and fan | |
| CN209687799U (en) | Axial flow fan blade and axial flow fan | |
| CN209430499U (en) | Cleaning device for turbocompressor maintenance | |
| CN203009389U (en) | Axial-flow fan | |
| CN201209591Y (en) | Impeller wheel of assembly air compressor in air separation unit | |
| CN109779969B (en) | Impeller with supercharging device, fan and range hood | |
| CN102562662A (en) | Axial flow wind wheel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20200105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |