CN214887913U - Lightweight through-flow fan blade - Google Patents
Lightweight through-flow fan blade Download PDFInfo
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- CN214887913U CN214887913U CN202120753735.7U CN202120753735U CN214887913U CN 214887913 U CN214887913 U CN 214887913U CN 202120753735 U CN202120753735 U CN 202120753735U CN 214887913 U CN214887913 U CN 214887913U
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Abstract
A light-weight through-flow fan blade comprises a middle plate and a plurality of blades annularly arranged on the middle plate, wherein the outer edge of the upper end face of the middle plate is obliquely arranged to form a first inclined face, the inclination angle of the first inclined face is a, a is 0.1-30 degrees, the outer edge of the lower end face of the middle plate is obliquely arranged to form a second inclined face, the inclination angle of the second inclined face is b, and b is 0.1-30 degrees; the position fretwork setting in the middle of the medium plate is corresponding to the root of blade forms the dead slot, in the middle of the root of blade downwardly extending into the dead slot, forms the extension root. The utility model discloses a through-flow fan blade is through the outward flange design inclination of terminal surface about the medium plate, and the business turn over air volume of multiplicable product improves product property ability, and the medium plate is corresponding to the position fretwork setting in the middle of the root of blade, realizes the product lightweight, and save material improves shrinkage and bubble, and does not influence the welding production of product, and downwardly extending advances the dead slot in the middle of the root of blade, and multiplicable product advances gluey speed, the cycle of moulding plastics to increase the bulk strength of product.
Description
Technical Field
The utility model relates to a fan technical field, in particular to lightweight through-flow fan blade.
Background
As shown in fig. 7-9, the outer edges of the upper and lower end faces of the middle plate 3 of the conventional cross-flow fan blade are in a right-angle structure, the air inlet and outlet amount of the product is small, the outer edge of the middle plate 3 is easy to scrape hands, and the blades 4 are annularly arranged on the middle plate 3, so that the glue inlet speed of the product is low, the production efficiency is low, the overall strength of the product is general, and the conventional cross-flow fan blade is generally heavy, high in material cost and inconvenient to transport; for example, the same problem exists in the cross-flow fan blade disclosed in chinese patent document No. CN112228391A at 1/15/2021.
Therefore, further improvements are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, business turn over amount of wind are big, save material, production efficiency is high, bulk strength is high, the lightweight through-flow fan blade that the practicality is strong to overcome the weak point among the prior art.
Design according to this purpose's a lightweight through-flow fan blade, including medium plate and annular a plurality of blades of setting on the medium plate, its characterized in that: the outer edge of the middle plate upper end surface is obliquely arranged to form a first inclined surface, the inclination angle of the first inclined surface is a, a is 0.1-30 degrees, the outer edge of the middle plate lower end surface is obliquely arranged to form a second inclined surface, the inclination angle of the second inclined surface is b, and b is 0.1-30 degrees.
The middle plate is arranged corresponding to the hollow part in the middle of the blade root part to form a hollow groove, and the middle part of the blade root part extends downwards into the hollow groove to form an extension root.
The height of the extending root is c, c is 0.1-3 mm, the width of the empty groove is d, and d is 2-7 mm.
The height of the extension root is less than that of the empty groove.
The thickness of the middle plate is e, and the e is 3-5 mm.
The inclination angle of the first inclined plane is smaller than that of the second inclined plane.
The inclination angle a of the first inclined surface is 0.1-5 DEG, and the inclination angle b of the second inclined surface is 25-30 deg.
The bottom of medium plate is equipped with the blade mounting groove of a plurality of annular distribution, and each blade mounting groove and each blade one-to-one, the shape of blade mounting groove is the arc, and the top of blade upwards extends has curved sand grip, and the last sand grip of a well festival of cross-flow fan blade inserts in the blade mounting groove of the well festival of next.
The utility model discloses a through-flow fan blade is through the outward flange design inclination of terminal surface about the medium plate, the business turn over air volume of multiplicable product, improve product property ability, and make the medium plate outward flange no longer scrape the hand, the medium plate is corresponding to the position fretwork setting in the middle of the root of blade, realize the product lightweight, save material, improve shrinkage and bubble, and do not influence the welding production of product, downwardly extending advances the dead slot in the middle of the root of blade, multiplicable product advances gluey speed, the cycle of moulding plastics, improve the production efficiency of product, and increase the bulk strength of product.
Drawings
Fig. 1 is a schematic view of an overall structure of a cross-flow fan blade according to an embodiment of the present invention.
Fig. 2 is a schematic view of an overall structure of another direction of the cross-flow fan blade according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a cross-flow fan blade according to an embodiment of the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Fig. 5 is a bottom view of the cross-flow fan blade in an embodiment of the present invention.
Fig. 6 is a sectional view taken in the direction B-B in fig. 5.
Fig. 7 is a schematic overall structure diagram of a conventional cross-flow fan blade.
Fig. 8 is a bottom view of a conventional cross-flow fan blade.
Fig. 9 is a sectional view of a conventional cross-flow fan blade.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1 to 6, the light-weight through-flow fan blade includes a middle plate 1 and a plurality of blades 2 annularly disposed on the middle plate 1, wherein an outer edge of an upper end surface of the middle plate 1 is obliquely disposed to form a first inclined surface 1.1, an inclination angle of the first inclined surface 1.1 is a, a is 0.1 to 30 °, an outer edge of a lower end surface of the middle plate 1 is obliquely disposed to form a second inclined surface 1.2, an inclination angle of the second inclined surface 1.2 is b, and b is 0.1 to 30 °; the design is beneficial to increasing the air inlet and outlet amount of the product and improving the product performance.
The middle plate 1 is arranged corresponding to the hollow in the middle of the root part of the blade 2 (the design can meet the welding strength during welding), a hollow groove 1.3 is formed, and the middle of the root part of the blade 2 extends downwards into the hollow groove 1.3 to form an extension root 2.1. The design can reduce the weight of the cross-flow fan blade, one middle section of the cross-flow fan blade can reduce the weight by more than 4.2g, the material is saved, the shrinkage and the bubbles are improved, the injection molding of a mold is facilitated, and the product strength is increased.
The height of the extension root 2.1 is c, c is 1mm, the width of the hollow groove 1.3 is d, d is 2-7 mm, the thickness of the middle plate 1 is 3mm, and the height of the extension root 2.1 is smaller than the height of the hollow groove 1.3.
The inclination angle of the first inclined surface 1.1 is smaller than that of the second inclined surface 1.2, the inclination angle a of the first inclined surface 1.1 is 1.9 °, the inclination angle b of the second inclined surface 1.2 is 26.5 °, and the thickness of the middle plate 1 is too thin, so that the middle plate 1 is easily welded during welding, and therefore the inclined surfaces cannot be too inclined to ensure a certain thickness.
The bottom of medium plate 1 is equipped with the blade mounting groove 1.4 of a plurality of annular distribution, each blade mounting groove 1.4 and each blade 2 one-to-one, blade mounting groove 1.4's shape is the arc, the top of blade 2 upwards extends has curved sand grip 2.2, last one well sand grip 2.2 of festival of through-flow fan blade insert in the blade mounting groove 1.4 of next well festival to carry out the butt fusion, realize the connection of two adjacent well festivals.
The following table shows the intensity data detection of the light-weight cross-flow fan blade:
| product specification | Torsion (Forward N.m) | Torsion (reverse N.m) | Pulling force (N) |
| 98*604 | 14.08 | 14.62 | 4881 |
The data in the table show that the lightweight cross-flow fan blade can bear higher torsion and tension, and the overall strength is greatly improved.
The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and the scope of the invention is to be protected. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a lightweight through-flow fan blade, includes that medium plate (1) and annular set up a plurality of blades (2) on medium plate (1), its characterized in that: the outer edge of the upper end face of the middle plate (1) is obliquely arranged to form a first inclined face (1.1), the inclination angle of the first inclined face (1.1) is a, a is 0.1-30 degrees, the outer edge of the lower end face of the middle plate (1) is obliquely arranged to form a second inclined face (1.2), the inclination angle of the second inclined face (1.2) is b, and b is 0.1-30 degrees.
2. The lightweight cross-flow fan blade of claim 1, characterized in that: middle plate (1) forms dead slot (1.3) corresponding to the position fretwork setting in the middle of blade (2) root, in blade (2) root middle downwardly extending goes into dead slot (1.3), forms extension root (2.1).
3. The lightweight cross-flow fan blade of claim 2, characterized in that: the height of the extending root (2.1) is c, c is 0.1-3 mm, the width of the empty groove (1.3) is d, and d is 2-7 mm.
4. The lightweight cross-flow fan blade of claim 3, characterized in that: the height of the extension root (2.1) is less than that of the empty groove (1.3).
5. The lightweight cross-flow fan blade of claim 4, characterized in that: the thickness of the middle plate (1) is e, and the e is 3-5 mm.
6. The lightweight cross-flow fan blade of claim 1, characterized in that: the inclination angle of the first inclined surface (1.1) is smaller than that of the second inclined surface (1.2).
7. The lightweight cross-flow fan blade of claim 6, characterized in that: the inclination angle a of the first inclined surface (1.1) is 0.1-5 DEG, and the inclination angle b of the second inclined surface (1.2) is 25-30 deg.
8. The light-weight cross-flow fan blade of any one of claims 1-7, wherein: the bottom of medium plate (1) is equipped with blade mounting groove (1.4) that a plurality of annular distributes, and each blade mounting groove (1.4) and each blade (2) one-to-one, the shape of blade mounting groove (1.4) is the arc, and the top of blade (2) upwards extends has curved sand grip (2.2), and sand grip (2.2) of last one well festival of through-flow fan blade insert in blade mounting groove (1.4) of next well festival.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120753735.7U CN214887913U (en) | 2021-04-13 | 2021-04-13 | Lightweight through-flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120753735.7U CN214887913U (en) | 2021-04-13 | 2021-04-13 | Lightweight through-flow fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214887913U true CN214887913U (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120753735.7U Active CN214887913U (en) | 2021-04-13 | 2021-04-13 | Lightweight through-flow fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214887913U (en) |
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2021
- 2021-04-13 CN CN202120753735.7U patent/CN214887913U/en active Active
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