CN220816045U - Wing-shaped blade connected in split mode and centrifugal wind wheel - Google Patents
Wing-shaped blade connected in split mode and centrifugal wind wheel Download PDFInfo
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- CN220816045U CN220816045U CN202321945421.2U CN202321945421U CN220816045U CN 220816045 U CN220816045 U CN 220816045U CN 202321945421 U CN202321945421 U CN 202321945421U CN 220816045 U CN220816045 U CN 220816045U
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- 238000003466 welding Methods 0.000 claims description 8
- 238000004512 die casting Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model discloses a split-connection airfoil blade and a centrifugal wind wheel, which relate to the technical field of fans and comprise a pressure surface and a suction surface, wherein the pressure surface and the suction surface are respectively and independently processed and formed, the external dimensions of the pressure surface and the suction surface are different, the pressure surface and the suction surface are relatively and fixedly spliced to form the blade, and a joint of the pressure surface and the suction surface is a parting line of the blade. The two surfaces of the blade are formed by different shapes, so that the shape of the blade can be optimized relative to the traditional straight cylindrical blade, and the purposes of higher efficiency, lower power consumption, lower noise and long service life are achieved.
Description
Technical Field
The utility model relates to the technical field of fans, in particular to a split connection airfoil blade. In addition, the utility model also relates to a centrifugal wind wheel.
Background
The centrifugal wind wheel is a wind wheel which axially intakes air, radially outputs air and utilizes centrifugal force (depending on rotating speed and outer diameter) to apply work so as to make air raise pressure.
The traditional centrifugal wind wheel blade adopts a vertical arrangement mode, and the projection of the blade on the horizontal plane is an arc line; and casting and forming by adopting a mode of matching an inner die with an outer die during manufacturing. The traditional processing mode can not process more complicated special-shaped blade structures, and better optimization of the blades is difficult to achieve.
How to further optimize the airfoil of the blade is a technical problem that needs to be solved at present for a person skilled in the art.
Disclosure of utility model
The utility model provides a wing-shaped blade connected in a piece-by-piece manner, which is formed by mutually splicing a pressure surface and a suction surface, wherein the shape of the blade can be optimized, and the working performance of the blade is better, and the specific scheme is as follows:
The wing-shaped blade comprises a pressure surface and a suction surface, wherein the pressure surface and the suction surface are respectively and independently processed and molded, and the external dimensions of the pressure surface and the suction surface are different;
The pressure surface and the suction surface are fixedly spliced relatively to form the blade, and the joint of the pressure surface and the suction surface is a parting line of the blade.
Optionally, the parting line of the blade is a maximum contour line.
Optionally, the pressure surface and the suction surface are both spatially twisted curved surfaces.
Optionally, at least two sides of the pressure surface and the suction surface are fixed in a relative contact manner.
Optionally, the upper edge and the lower edge of the pressure surface and the suction surface are respectively provided with a positioning block in a protruding mode.
Optionally, the pressure surface and the suction surface are fixed relative to each other by welding.
Optionally, the pressure surface and the suction surface are respectively molded by casting through a mold.
The utility model also provides a centrifugal wind wheel, which comprises any one of the above-mentioned segmented connection airfoil blades, a front disc and a rear disc, wherein the upper end of the blade formed by the pressure surface and the suction surface is fixed on the front disc, and the lower end of the blade formed by the pressure surface and the suction surface is fixed on the rear disc; the center of the front plate is provided with a channel for air flow to enter.
Optionally, the front disc and the rear disc are respectively provided with a slot for inserting the positioning block.
Optionally, the blades are provided with five blades, and are arranged between the front disc and the rear disc in a central symmetry manner.
The utility model aims at providing a split-connection airfoil blade which comprises a pressure surface and a suction surface, wherein the pressure surface and the suction surface are respectively and independently processed and formed, the external dimensions of the pressure surface and the suction surface are different, the pressure surface and the suction surface are relatively fixed and spliced to form the blade, and the joint of the pressure surface and the suction surface is a parting line of the blade. The two surfaces of the blade are formed by different shapes, so that the shape of the blade can be optimized relative to the traditional straight cylindrical blade, and the purposes of higher efficiency, lower power consumption, lower noise and long service life are achieved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a first perspective isometric view of one embodiment of a segmented airfoil blade provided by the present utility model;
FIG. 2 is a second perspective isometric view of one embodiment of a segmented airfoil blade provided by the present utility model;
FIG. 3 is a third perspective isometric view of one embodiment of a segmented airfoil vane provided by the present utility model;
FIG. 4 is a front view of one embodiment of a segmented airfoil vane provided by the present utility model;
FIG. 5 is a schematic view of the various cross-sections of FIG. 4;
FIG. 6 is a schematic view of the structure of the pressure surface;
FIG. 7 is a schematic view of the various cross-sections of FIG. 6;
FIG. 8 is a schematic view of the suction side;
FIG. 9 is a schematic view of the various cross-sections of FIG. 8;
FIG. 10 is a front view of a particular embodiment of a centrifugal wind wheel provided by the present utility model;
FIG. 11 is a side view of one embodiment of a centrifugal wind wheel provided by the present utility model;
FIG. 12 is a schematic cross-sectional view of FIG. 11;
FIG. 13 is a front view of the front tray;
FIG. 14 is a schematic cross-sectional view of FIG. 13;
FIG. 15 is a front view of the rear tray;
fig. 16 is a schematic cross-sectional view of fig. 15.
The drawings include:
pressure surface 1, suction surface 2, locating piece 3, front tray 4, back tray 5, slot 6, parting line A.
Detailed Description
The core of the utility model is to provide a wing-shaped blade connected in a split manner, the blade is formed by mutually splicing a pressure surface and a suction surface, the shape of the blade can be optimized, and the better working performance of the blade is realized.
In order to make those skilled in the art better understand the technical solutions of the present utility model, the following detailed description will refer to the split-connection airfoil blade of the present utility model with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 9, fig. 5 shows the sectional structure at A-A to G-G in fig. 4, fig. 7 shows the sectional structure at A-A to F-F in fig. 6, and fig. 9 shows the sectional structure at A-A to F-F in fig. 8. The utility model provides a split-connection airfoil blade, which comprises a pressure surface 1 and a suction surface 2, wherein the pressure surface 1 and the suction surface 2 are respectively and independently machined and molded, the pressure surface 1 and the suction surface 2 are respectively in two mutually independent structures, and the external dimensions of the pressure surface 1 and the suction surface 2 are different.
The pressure surface 1 and the suction surface 2 are relatively fixed and spliced to form a blade, namely the blade is formed by splicing the pressure surface 1 and the suction surface 2, a joint line of the pressure surface 1 and the suction surface 2 is a parting line of the blade, when the pressure surface 1 and the suction surface 2 are mutually spliced to form the blade, the pressure surface 1 and the suction surface 2 are relatively fixed into a whole, the pressure surface 1 and the suction surface 2 jointly form the hollow blade, and the blade is of a thin shell structure.
The pressure surface 1 is the outer side surface of the blade, the suction surface 2 is the inner side surface of the blade, the pressure surface 1 and the suction surface 2 forming the blade are two mutually independent components, the pressure surface 1 and the suction surface 2 are respectively and independently processed and molded, and finally the blade is formed by splicing; when the blades are driven to rotate, air can be caused to generate airflow.
The parting line of the blade is a joint between the pressure surface 1 and the suction surface 2, the pressure surface 1 and the suction surface 2 can be fixed at the parting line by adopting a welding and other connection modes, and the whole joint is closed after the pressure surface 1 and the suction surface 2 are fixed at the parting line. The pressure surface 1 and the suction surface 2 can adopt a completely closed structure, namely the internal cavity of the whole blade is not communicated with the outside; it is also possible to use a partially closed structure, i.e. there is a part of the joint between the pressure surface 1 and the suction surface 2 and the outside, and there is a part of the unconnected area between the pressure surface 1 and the suction surface 2, and the internal cavity of the blade is in communication with the outside.
Because the pressure surface 1 and the suction surface 2 are two mutually independent structures, the pressure surface 1 and the suction surface 2 can be designed in different structures everywhere, the pressure surface 1 and the suction surface 2 forming the blade are designed in different shapes, and more structural possibilities can be realized according to design requirements. The traditional blade adopts a straight cylinder shape, and when the blade is vertically placed, the surfaces forming the blade are all vertical to the horizontal plane; the blade structure provided by the utility model is formed by mutually splicing the two surfaces of the pressure surface 1 and the suction surface 2, so that the shape of the blade can be optimized, and the purposes of higher efficiency, lower power consumption, lower noise and long service life are achieved by adopting the space curved surface shape for the pressure surface 1 and the suction surface 2.
The pressure surface 1 and the suction surface 2 are molded by adopting space curved surfaces, which is equivalent to space distortion, the whole blade can not be stretched and taken off in a mold casting mode, and the utility model can effectively avoid the problem by respectively processing the pressure surface 1 and the suction surface 2 and then splicing.
It should be noted that, the pressure surface 1 and the suction surface 2 may be molded by one-time casting with a mold, or may be formed by splicing two or more split structures, and these specific arrangements should be included in the scope of the present utility model.
On the basis of the scheme, the parting line of the blade is the maximum contour line, and the surface of the blade is a streamline curved surface, and a bending structure exceeding 90 degrees does not exist at the maximum contour line, so that the pressure surface 1 and the suction surface 2 can be conveniently machined and molded by adopting a die.
Specifically, the pressure surface 1 and the suction surface 2 provided by the utility model are both space torsion curved surfaces, the pressure surface 1 and the suction surface 2 are both space torsion curved surfaces to form a sheet metal torsion blade, and the sheet metal torsion blade adopts a three-way flow technology, so that the fan has higher efficiency, lower power consumption, lower noise and long service life.
The sheet metal twisted blade has the back-off, and the whole body is stretched and can not be taken off from the film during production, and some parts can be scraped while the part can be strongly demoulded, but the mold core is very small and is easy to break. The blade is divided into two halves at the parting line, namely the pressure surface 1 and the suction surface 2, and the two halves are respectively processed, and in a welding tool, the blade is welded together along the parting line to form the wing-shaped twisted blade, and the parting line of the wing-shaped sheet metal twisted blade is overlapped with the welding line, so that the problem of difficult production of the twisted wing-shaped twisted blade is effectively solved.
At least two sides of the pressure surface 1 and the suction surface 2 are in relative contact fixation, and as shown in fig. 2 and 3, two parting lines A exist on the pressure surface 1 and the suction surface 2, and in the blade structure formed by the pressure surface 1 and the suction surface 2, the contact part of the blade and the front disc 4 and the rear disc 5 is not closed, but can be in contact with the front disc 4 and the rear disc 5 to close the inner cavity of the blade.
As shown in fig. 1 to 4, the upper edges and the lower edges of the pressure surface 1 and the suction surface 2 are respectively provided with a plurality of positioning blocks 3 in a protruding manner, the positioning blocks 3 protrude from the pressure surface 1 or the suction surface 2, and the positioning blocks 3 are arranged towards the front disc 4 or the rear disc 5, and the positioning blocks 3 can be inserted into the front disc 4 or the rear disc 5 to form positioning matching. The specific shape of the positioning block 3 is not limited, and the thicknesses of the positioning block 3 and the pressure surface 1 and the suction surface 2 can be kept equal.
Specifically, the pressure surface 1 and the suction surface 2 are fixed by welding, and a complete welding line is formed at the contact part of the pressure surface 1 and the suction surface 2, and the welding line is kept closed.
The pressure surface 1 and the suction surface 2 of the present utility model are cast and formed by a mold, respectively, and in general, the pressure surface 1 and the suction surface 2 may be cast and formed by a set of molds, respectively.
The utility model also provides a centrifugal wind wheel, and in combination with fig. 10 to 16, fig. 12 shows a section structure of A-A in fig. 11, fig. 14 shows a section structure of A-A in fig. 13, and fig. 16 shows a section structure of A-A in fig. 15. The centrifugal wind wheel comprises the segmented connection airfoil blade, and further comprises a front disc 4 and a rear disc 5, wherein the upper end of the blade formed by the pressure surface 1 and the suction surface 2 is fixed on the front disc 4, and the lower end of the blade is fixed on the rear disc 5; the center of the front plate 4 is provided with a channel for the air flow to enter.
The upper edge and the lower edge of the pressure surface 1 and the suction surface 2 are respectively provided with a positioning block 3 in a protruding way for inserting and positioning a front disc 4 and a rear disc 5. Slots 6 for inserting positioning blocks are respectively arranged on the front disc 4 and the rear disc 5, and when the positioning blocks 3 are inserted into the slots 6, the pressure surface 1 and the suction surface 2 can be positioned to ensure accurate installation of the blades.
In one embodiment, as shown in fig. 12, five blades are provided, each of which is centrally and symmetrically disposed between the front disk 4 and the rear disk 5, and the blades, the front disk 4 and the rear disk 5 together form a centrifugal wind wheel, and when the centrifugal wind wheel rotates, an airflow is generated by the blades.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The split connection airfoil blade is characterized by comprising a pressure surface (1) and a suction surface (2), wherein the pressure surface (1) and the suction surface (2) are respectively and independently processed and formed, and the external dimensions of the pressure surface (1) and the suction surface (2) are different;
The pressure surface (1) and the suction surface (2) are fixedly spliced relatively to form a blade, and the joint of the pressure surface (1) and the suction surface (2) is a parting line of the blade;
The upper edges and the lower edges of the pressure surface (1) and the suction surface (2) are respectively provided with a positioning block (3) in a protruding mode.
2. The split-joint airfoil blade of claim 1, wherein the parting line of the blade is a maximum profile line.
3. The segmented connected airfoil blade according to claim 2, characterized in that the pressure surface (1) and the suction surface (2) are both spatially twisted curved surfaces.
4. The segmented airfoil blade according to claim 2, characterized in that both the pressure surface (1) and the suction surface (2) are provided with at least two side edges fixed in relative contact.
5. The segmented connected airfoil blade according to claim 2, characterized in that the pressure surface (1) and the suction surface (2) are fixed relative to each other by welding.
6. The segmented connected airfoil blade according to claim 2, characterized in that the pressure side (1) and the suction side (2) are each molded by die casting.
7. A centrifugal wind wheel, characterized by comprising the segmented connection airfoil blade according to any one of claims 1 to 6, further comprising a front disc (4) and a rear disc (5), wherein the upper end of the blade formed by the pressure surface (1) and the suction surface (2) is fixed on the front disc (4), and the lower end is fixed on the rear disc (5); the center of the front disc (4) is provided with a channel for air flow to enter.
8. Centrifugal wind wheel according to claim 7, wherein the front disc (4) and the rear disc (5) are each provided with a slot (6) for inserting a positioning block (3).
9. Centrifugal wind wheel according to claim 7, wherein the blades are provided in five pieces, arranged centrally symmetrically between the front disc (4) and the rear disc (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321945421.2U CN220816045U (en) | 2023-07-24 | 2023-07-24 | Wing-shaped blade connected in split mode and centrifugal wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321945421.2U CN220816045U (en) | 2023-07-24 | 2023-07-24 | Wing-shaped blade connected in split mode and centrifugal wind wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816045U true CN220816045U (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321945421.2U Active CN220816045U (en) | 2023-07-24 | 2023-07-24 | Wing-shaped blade connected in split mode and centrifugal wind wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816045U (en) |
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2023
- 2023-07-24 CN CN202321945421.2U patent/CN220816045U/en active Active
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