CN210889454U - Fan blade structure of axial-flow type fire-fighting smoke exhaust fan - Google Patents
Fan blade structure of axial-flow type fire-fighting smoke exhaust fan Download PDFInfo
- Publication number
- CN210889454U CN210889454U CN201921610191.8U CN201921610191U CN210889454U CN 210889454 U CN210889454 U CN 210889454U CN 201921610191 U CN201921610191 U CN 201921610191U CN 210889454 U CN210889454 U CN 210889454U
- Authority
- CN
- China
- Prior art keywords
- arc
- flabellum
- fan blade
- smoke exhaust
- axial
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an axial-flow type fire control smoke exhaust fan's flabellum structure, install the flabellum on wheel hub including wheel hub and a plurality of, the axial cross-section of flabellum is the arc, the flabellum is upwards by the circular arc welding part that the head and the tail connected gradually, the straight line front edge, arc lateral margin and arc trailing edge constitute, the flabellum is 30 ~ 33 in the trend on wheel hub surface and the contained angle between wheel hub's the terminal surface, the radial abduction angle of straight line front edge is 10 ~ 12, this flabellum is according to distortion blade theory, and combine the aerodynamics theory, use variable ring volume flow pattern design method, make the acting distribution of flabellum accord with the motion law more, thereby the higher functional transformation benefit of performance, this flabellum has reached that the.
Description
Technical Field
The utility model relates to a fire control ventilation technical field especially relates to an axial-flow type fire control smoke exhaust fan's flabellum structure.
Background
The fire-fighting smoke exhaust fan is common equipment in the field of building fire fighting, is used for smoke exhaust in case of fire, and is very important, but the existing fire-fighting smoke exhaust fan has small air pressure and low smoke exhaust speed, and the main reason is that the adopted fan blade structure is unreasonable.
Therefore, the technical personnel in the field are dedicated to develop the fan blade structure of the axial flow type fire-fighting smoke exhaust fan with good smoke exhaust effect.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of the prior art, the utility model aims to solve the technical problem that a flabellum structure of axial-flow type fire control smoke exhaust fan that the smoke exhaust effect is good is provided.
In order to realize the above object, the utility model provides an axial-flow type fire control smoke exhaust fan's flabellum structure, install including wheel hub and a plurality of wheel hub's last flabellum, the axial cross-section of flabellum is the arc, the flabellum upwards comprises circular arc welding part, sharp leading edge, arc lateral margin and the arc trailing edge that connects gradually from beginning to end, the flabellum is in the trend on wheel hub surface with contained angle between wheel hub's the terminal surface is 30 ~ 33, the radial abduction angle of sharp leading edge is 10 ~ 12.
The arc welding part is connected with the surface of the hub in a welding mode.
The fan blade comprises a protruding windward side and a sunken leeward side in the axial direction, and the arc length of the cross section of the leeward side is larger than that of the windward side.
The arc length of the arc rear edge is greater than that of the arc lateral edge, and the arc length of the arc welding part is less than that of the arc lateral edge.
The surface of the fan blade is also paved with a ceramic nano coating.
The utility model has the advantages that: the utility model discloses an axial-flow type fire control smoke exhaust fan's flabellum structure, install the flabellum on wheel hub including wheel hub and a plurality of, the axial cross-section of flabellum is the arc, the flabellum is upwards by the circular arc welding part that the head and the tail connected gradually, straight line front edge, arc lateral margin and arc trailing edge constitute, the contained angle of flabellum between the trend on wheel hub surface and wheel hub's terminal surface is 30 ~ 33, straight line front edge's radial abduction angle is 10 ~ 12, this flabellum is according to distortion blade theory, and combine the aerodynamics theory, use variable ring volume flow pattern design method, make the acting distribution of flabellum accord with the motion law more, thereby the higher function conversion benefit of performance, this flabellum structure has reached the flow.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is one of the partial structural schematic diagrams of the present invention;
fig. 3 is a second partial schematic view of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, a fan blade structure of an axial-flow fire-fighting smoke exhaust fan comprises a hub 1 and a plurality of fan blades 2 mounted on the hub 1, wherein an axial cross section of each fan blade 2 is arc-shaped, each fan blade 2 is composed of an arc welding part 21, a linear front edge 22, an arc side edge 23 and an arc rear edge 24 which are sequentially connected end to end in a radial direction, an included angle between a trend of the fan blade 2 on the surface of the hub 1 and the end surface of the hub 1 is b, a radial abduction angle of the linear front edge 22 is a, an included angle between a trend of the fan blade 2 on the surface of the hub 1 and the end surface of the hub 1 is 30 to 33 degrees, a radial abduction angle of the linear front edge 22 is 10 to 12 degrees, and in this embodiment, the arc; the fan blade 2 comprises a protruding windward side 25 and a recessed leeward side 26 in the axial direction, and the sectional arc length of the leeward side 26 is larger than that of the windward side 25; the arc length of the arc rear edge 24 is larger than that of the arc lateral edge 23, the arc length of the arc welding part 21 is smaller than that of the arc lateral edge 23, the acting distribution of the fan blade is enabled to be more in line with the motion rule by applying a variable-loop flow pattern design method according to the twisted blade theory and combining the aerodynamic theory, and therefore higher function conversion benefit is achieved, and the fan blade structure achieves the characteristics of large flow, full pressure and low noise.
In addition, the surface of the fan blade 2 is also paved with a ceramic nano coating which is an aluminum oxide coating, so that the hardness of the fan blade 2 is increased, the surface structure of the fan blade 2 is improved, the fan blade 2 is enabled to be more non-sticky, smoke dust is avoided being infected, and the high temperature resistance is also enhanced.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides an axial-flow type fire control smoke exhaust fan's flabellum structure, includes that wheel hub (1) and a plurality of install flabellum (2) on wheel hub (1), characterized by: the axial cross section of the fan blade (2) is arc-shaped, the fan blade (2) is composed of an arc welding part (21), a linear front edge (22), an arc-shaped side edge (23) and an arc-shaped rear edge (24) which are sequentially connected end to end in the radial direction, the included angle between the trend of the surface of the hub (1) and the end surface of the hub (1) of the fan blade (2) is 30-33 degrees, and the radial outward expansion angle of the linear front edge (22) is 10-12 degrees.
2. The fan blade structure of axial flow type fire-fighting smoke exhaust fan according to claim 1, characterized in that: the arc welding part (21) is connected with the surface of the hub (1) in a welding mode.
3. The fan blade structure of axial flow type fire-fighting smoke exhaust fan according to claim 1, characterized in that: the fan blade (2) comprises a protruding windward side (25) and a recessed leeward side (26) in the axial direction, and the section arc length of the leeward side (26) is larger than that of the windward side (25).
4. The fan blade structure of axial flow type fire-fighting smoke exhaust fan according to claim 1, characterized in that: the arc length of the arc rear edge (24) is greater than that of the arc side edge (23), and the arc length of the arc welding part (21) is less than that of the arc side edge (23).
5. The fan blade structure of the fire-fighting smoke exhaust fan as set forth in claim 1, characterized in that: the surface of the fan blade (2) is further paved with a ceramic nano coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610191.8U CN210889454U (en) | 2019-09-25 | 2019-09-25 | Fan blade structure of axial-flow type fire-fighting smoke exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610191.8U CN210889454U (en) | 2019-09-25 | 2019-09-25 | Fan blade structure of axial-flow type fire-fighting smoke exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210889454U true CN210889454U (en) | 2020-06-30 |
Family
ID=71318252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921610191.8U Active CN210889454U (en) | 2019-09-25 | 2019-09-25 | Fan blade structure of axial-flow type fire-fighting smoke exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210889454U (en) |
-
2019
- 2019-09-25 CN CN201921610191.8U patent/CN210889454U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106351878B (en) | A kind of axis stream skewed blade | |
| JP3960776B2 (en) | Blower impeller for air conditioning | |
| CN103807102A (en) | Straight-through type narrow-pipe wind collecting wind power generation system | |
| CN203796497U (en) | Straight-through type narrow tube wind-collecting wind power generation system | |
| CN210889454U (en) | Fan blade structure of axial-flow type fire-fighting smoke exhaust fan | |
| WO2020042551A1 (en) | Axial flow fan wheel and axial flow fan using same | |
| CN206816552U (en) | Axial-flow windwheel and air conditioner | |
| CN203130602U (en) | Cross-flow fan for air conditioner, cross-flow blower and air conditioner | |
| CN211525182U (en) | Swept-curved blade and axial flow fan | |
| CN216044614U (en) | Integrally formed curved and swept combined blade, impeller and axial flow fan | |
| CN103939392B (en) | Axial flow fan blade and air conditioner provided with same | |
| CN212868015U (en) | Blade of fan | |
| CN210889453U (en) | Fan blade structure of fire-fighting smoke exhaust fan | |
| CN209012125U (en) | Axial-flow windwheel and warm-air drier | |
| CN204921414U (en) | High -efficient sweepforward type subway tunnel axial fan | |
| CN112814943A (en) | Integrally formed curved and swept combined blade, impeller and axial flow fan | |
| CN210686426U (en) | Axial flow wind wheel and air conditioner with same | |
| CN107023513A (en) | Axial-flow windwheel and air conditioner | |
| CN104728162B (en) | Through-flow fan | |
| CN208935017U (en) | A kind of airfoil type low noise axial fan blade | |
| CN111043081A (en) | Axial fan and application thereof in remote mist sprayer | |
| CN210317900U (en) | Blade for axial flow fan | |
| CN212479687U (en) | Centrifugal impeller, centrifugal fan and refrigeration equipment | |
| CN205401248U (en) | Tooth -like transmission centrifugal compressor diffuser | |
| CN211174762U (en) | Novel mixed flow fan blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |