CN201696347U - High-efficiency airfoil blade for centrifugal fan - Google Patents
High-efficiency airfoil blade for centrifugal fan Download PDFInfo
- Publication number
- CN201696347U CN201696347U CN2010202129993U CN201020212999U CN201696347U CN 201696347 U CN201696347 U CN 201696347U CN 2010202129993 U CN2010202129993 U CN 2010202129993U CN 201020212999 U CN201020212999 U CN 201020212999U CN 201696347 U CN201696347 U CN 201696347U
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- airfoil
- blade
- aerofoil profile
- airfoil fan
- airfoil blade
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Abstract
The utility model relates to a high-efficiency airfoil blade for a centrifugal fan, which is a heart part of a backward centrifugal fan, is widely used in the filed of air conditioning and industrial ventilation and comprises an airfoil cambered end (1) and an airfoil flat end (2). An airfoil comprises an airfoil front end (3), a chord line (4), a lower surface (5), an airfoil tail part (6), an upper surface (7) and the maximum thickness (8) of an airfoil blade. The upper surface of the airfoil blade (7) is a curved line, the lower surface (5) is approximately a straight line, the lower surface (5) is close to the chord line (4), the position of the maximum thickness (8) of the airfoil blade is arranged at a position which is 20 to 25 percent of the length of the chord line far away from the front end point of the airfoil, the curved line and the straight line intersect with each other at the tail part (6) of the airfoil blade and thereby a closed linear conical airfoil blade is formed, wherein the front end of the airfoil blade is a small circular arc and the internal part of the airfoil blade is hollow. The utility model has the advantages of large blade flow, high pressure, low noise, high efficiency and the like.
Description
Technical field
The efficient wing blades of centrifugal blower is the heart component of back to centrifugal blower.Be widely used in air conditioning and industrial ventilation field.
Background technique
The developing direction of centrifugal blower is efficient, low noise and compact in size, the theme of advocating energy-saving and environmental protection with country energetically is consistent, and the optimal design of blade is the key of decision blower performance, noise and efficient, and how the blade of design performance excellence has become the difficult point and the focus of ventilator design field.
The model utility content
The technical problems to be solved in the utility model is, overcomes the problem that prior art exists, and designs a kind of efficient wing blades of centrifugal blower that flow is big, pressure is high, noise is low, efficient is high that has.
The technological scheme that its technical problem that solves the utility model adopts is: the efficient wing blades of this centrifugal blower, comprise blade, it is characterized in that: blade is an integrated type hollow machine aerofoil profile, comprise aerofoil profile cambered surface end and aerofoil profile planar ends, aerofoil profile comprises the aerofoil profile front end again, the string of a musical instrument, lower surface, the aerofoil profile afterbody, the maximum ga(u)ge of upper surface and airfoil fan, the airfoil fan upper surface is a curve, lower surface is approximately straight line, lower surface is near the string of a musical instrument, it is 20～25% string of a musical instrument length place apart from the aerofoil profile forward terminal that the maximum ga(u)ge position of airfoil fan is positioned at it, intersect at airfoil fan afterbody place, constituting front end is to be the straight line taper airfoil fan of a sealing of hollow in the little circular arc.
The maximum ga(u)ge of airfoil fan is 6～8% of a string of a musical instrument length.
Compared with prior art, the efficient wing blades of centrifugal blower of the present utility model, aerofoil profile transition slyness, the size design science, the aerofoil profile front end adopts the design of roundlet arc, and afterbody adopts seamless smooth welding, thereby has guaranteed high-performance low-noise.In order to obtain better performance and efficient, blade adopts the sheet metal once-through, and aerofoil section is fine taper, the descending progressively transition of size, and the advantage of aerofoil profile is fully used, and has satisfied the requirement of ventilator excellent properties.The utility model centrifugal blower adopts mold to make with efficient wing blades, the manufacturing efficiency height, and dimensional uniformity is good, beautiful shape.
Description of drawings
Fig. 1 is a centrifugal blower of the present utility model with efficient wing blades master TV structure schematic representation;
Fig. 2 is the plan view of Fig. 1.
Fig. 1-2 is the most preferred embodiment of centrifugal blower of the present utility model with efficient wing blades.
Wherein: the maximum ga(u)ge of 1 aerofoil profile cambered surface end, 2 aerofoil profile planar ends, 3 aerofoil profile front ends, 4 strings of a musical instrument, 5 lower surfaces, 6 aerofoil profile afterbodys, 7 upper surfaces 8, airfoil fan
Embodiment
Below in conjunction with accompanying drawing 1-2 centrifugal blower of the present utility model is described further with efficient wing blades:
Shown in Fig. 1-2,
The efficient wing blades of this centrifugal blower, form by aerofoil profile cambered surface end 1 and aerofoil profile planar ends 2, aerofoil profile is again by aerofoil profile front end 3, the string of a musical instrument 4, lower surface 5, aerofoil profile afterbody 6, the maximum ga(u)ge 8 of upper surface 7 and airfoil fan is formed, airfoil fan upper surface 7 is a curve, lower surface 5 is approximately straight line, lower surface 5 is near the string of a musical instrument 4, the maximum ga(u)ge 8 of airfoil fan is 6～8% of string of a musical instrument length, it is 20～25% string of a musical instrument length place apart from the aerofoil profile forward terminal that maximum ga(u)ge 8 positions of airfoil fan are positioned at it, intersect at airfoil fan afterbody 6 places, constitute aerofoil profile front end 3 and be the design of roundlet arc, interior is the straight line taper airfoil fan of a sealing of hollow.Aerofoil profile afterbody 6 adopts seamless smooth welding.
During use, the utility model airfoil fan owing to be that aerofoil profile planar ends 2 is the plane, is connected with the square position when using, and aerofoil profile cambered surface end 1 is the camber line Special-Shaped Surface, matches with shroud, smooth and easy when having guaranteed the blade air inlet, raising blade efficiency.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (2)
1. the efficient wing blades of centrifugal blower, comprise blade, it is characterized in that: blade is an integrated type hollow machine aerofoil profile, comprise aerofoil profile cambered surface end (1) and aerofoil profile planar ends (2), aerofoil profile comprises aerofoil profile front end (3) again, the string of a musical instrument (4), lower surface (5), aerofoil profile afterbody (6), the maximum ga(u)ge (8) of upper surface (7) and airfoil fan, airfoil fan upper surface (7) is a curve, lower surface (5) is approximately straight line, lower surface (5) is near the string of a musical instrument (4), it is 20～25% string of a musical instrument length place apart from the aerofoil profile forward terminal that the maximum ga(u)ge of airfoil fan (8) position is positioned at it, locate to intersect at airfoil fan afterbody (6), constituting front end is to be the straight line taper airfoil fan of a sealing of hollow in the little circular arc.
2. the efficient wing blades of centrifugal blower according to claim 1 is characterized in that: the maximum ga(u)ge of airfoil fan (8) is 6～8% of the string of a musical instrument (4) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202129993U CN201696347U (en) | 2010-05-26 | 2010-05-26 | High-efficiency airfoil blade for centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202129993U CN201696347U (en) | 2010-05-26 | 2010-05-26 | High-efficiency airfoil blade for centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201696347U true CN201696347U (en) | 2011-01-05 |
Family
ID=43397589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202129993U Expired - Fee Related CN201696347U (en) | 2010-05-26 | 2010-05-26 | High-efficiency airfoil blade for centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201696347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564804A (en) * | 2013-10-22 | 2015-04-29 | 珠海格力电器股份有限公司 | Wind wheel blade, cross-flow wind wheel and design method of wind wheel blade |
-
2010
- 2010-05-26 CN CN2010202129993U patent/CN201696347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564804A (en) * | 2013-10-22 | 2015-04-29 | 珠海格力电器股份有限公司 | Wind wheel blade, cross-flow wind wheel and design method of wind wheel blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20140526 |