Lightweight high-performance wing-shaped fan blade

Abstract

The utility model relates to a light high-performance wing-shaped fan blade which comprises a cylindrical blade handle, a wing-shaped blade body is arranged on one side of the blade handle, one end of the blade body is fixedly connected with the blade handle through a blade handle connecting piece, the other end of the blade body is fixedly connected with a blade sealing plate, and the blade body comprises an arc-shaped upper panel and an arc-shaped lower panel. An arc-shaped transition plate is formed between one side edge of the upper panel and one side edge of the lower panel, and the other side edge of the upper panel and the other side edge of the lower panel are welded and fixed together; a plurality of spherical pits are formed in the upper panel and the lower panel; the blade handle connecting piece comprises a wing-shaped inner end plate, the blade handle is welded and fixed to the middle of the end face of one side of the inner end plate, and an annular inner inserting plate is welded and fixed to the end face of the other side of the inner end plate. According to the wing-shaped fan blade, plates are adopted as the blade bodies of the wing-shaped fan blade, the pits are conveniently formed in the blade bodies, the structure is simple, the performance is good, and compared with a blade of a casting structure, the manufacturing cost can be effectively saved.

Description

Technical field:

[0001] The utility model relates to the technical field of fan blades, and more specifically to a light and high-performance wing-shaped fan blade. Background technology:

[0002] An axial flow fan is an airflow in the same direction as the axis of the fan blade. It is widely used for ventilation in general factories, warehouses, offices, and residences. The impeller of an axial flow fan consists of a disk in the middle and blades arranged around the disk. The blades generally include blades and petioles. There are also blades with airfoil structures, which include blades with airfoil structures. One end of the blade is plugged and fixed with a petiole, which is fixed to the blade by bolts, and the other end of the blade is fixed with a sealing plate. The blade is a casting of an aluminum alloy structure, including an outer layer of the airfoil, and many rib structures are arranged inside, but casting is more troublesome and costly. In addition, it is currently necessary to process array-distributed dimples on the outer surface of the blade to improve the performance of the blade. It is more troublesome to process dimples on aluminum alloy cast blades. Therefore, it is necessary to develop a fan blade that is convenient for dimple forming and can save manufacturing costs. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide a lightweight, high-performance airfoil blade. The airfoil blade uses a plate as the blade of the airfoil blade, which is convenient for forming recesses on the blade. It has a simple structure and good performance. Compared with blades with a cast structure, it can effectively save manufacturing costs.

[0004] A lightweight, high-performance airfoil fan blade, a cylindrical petiole, an airfoil blade is arranged on one side of the petiole, one end of the blade is fixedly connected to the petiole through a petiole connector, and the other end is fixedly connected to a blade cover plate, the blade comprises an arc-shaped upper panel and a lower panel, an arc-shaped transition plate is formed between one side of the upper panel and one side of the lower panel, and the other side of the upper panel and the other side of the lower panel are welded and fixed together; a plurality of spherical recesses are formed on the upper panel and the lower panel;

[0005] The petiole connecting piece comprises an airfoil inner end plate, the petiole is welded and fixed to the middle part of one end surface of the inner end plate, and an annular inner plug-in plate is welded and fixed to the end surface of the other side of the inner end plate; the blade sealing plate comprises an airfoil outer end plate, an annular outer plug-in plate is welded and fixed to the end surface of the outer end plate, and the outer plug-in plate and the inner plug-in plate are respectively plugged and fixed to the two ends of the blade;

[0006] The inner plug-in board is formed with a plurality of inner snap-in slots, and the outer plug-in board is formed with outer snap-in slots opposite to the inner snap-in slots; the blades are plugged with a plurality of ribs, and the two ends of the ribs are respectively inserted into the inner snap-in slots of the inner plug-in board and the outer snap-in slots of the outer plug-in board; the two side edges of the blades close to the upper panel and the lower panel are respectively against the upper panel and the lower panel and are formed with strip grooves, and rubber strips are glued and fixed in the strip grooves, and the rubber strips are glued and fixed on the inner surfaces of the upper panel and the lower panel respectively.

[0007] Preferably, the cross-sections of the inner plug-in board and the outer plug-in board are both airfoil-shaped, and the inner plug-in board and the outer plug-in board respectively abut against the inner surfaces of the upper panel and the lower panel; the inner plug-in board and the outer plug-in board are respectively fixedly connected to the blade by welding.

[0008] Preferably, the dimples are distributed in an array on the upper panel and the lower panel of the blade, and the two side edges of the rib plate are respectively located between the dimples of the upper panel and between the dimples of the lower panel.

[0009] Preferably, a plurality of annular grooves are formed on the petiole.

[0010] Preferably, the length of the inner plug-in plate on the petiole connector is greater than the length of the outer plug-in plate on the blade cover, and the inner plug-in plate is fixed to the blade by riveting.

[0011] Preferably, the outer side edge of the inner end plate and the outer side edge of the outer end plate are flush with the outer surface of the blade.

[0012] The beneficial effects of the utility model are:

[0013] The airfoil fan blade adopts a plate as the blade of the airfoil fan blade, which is convenient for forming dimples on the blade. The structure is simple and the performance is good. Compared with the blades with a casting structure, the manufacturing cost can be effectively saved. Description of the drawings:

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model without blades;

[0017] Figure 4 It is a schematic structural diagram of the cross-section of the utility model.

[0018] In the figure: 1. petiole; 2. petiole connector; 21. inner end plate; 22. inner plug-in plate; 221. inner snap-in; 3. blade; 31. upper panel; 32. lower panel; 33. transition plate; 34. recess; 4. blade sealing plate; 41. outer end plate; 42. outer plug-in plate; 421. outer snap-in; 5. rib plate; 6. rubber strip. Specific implementation method:

[0019] Example: See Figures 1 to 4 As shown, a lightweight and high-performance airfoil fan blade has a cylindrical petiole 1, an airfoil blade 3 is provided on one side of the petiole 1, one end of the blade 3 is fixedly connected to the petiole 1 through a petiole connector 2, and the other end is fixedly connected to a blade cover plate 4, the blade 3 includes an arc-shaped upper panel 31 and a lower panel 32, an arc-shaped transition plate 33 is formed between one side of the upper panel 31 and one side of the lower panel 32, and the other side of the upper panel 31 and the other side of the lower panel 32 are welded and fixed together; a plurality of spherical recesses 34 are formed on the upper panel 31 and the lower panel 32;

[0020] The petiole connector 2 includes an airfoil inner end plate 21, the petiole 1 is welded and fixed to the middle of one end surface of the inner end plate 21, and an annular inner plug-in plate 22 is welded and fixed to the end surface of the other side of the inner end plate 21; the blade sealing plate 4 includes an airfoil outer end plate 41, and an annular outer plug-in plate 42 is welded and fixed to the end surface of the outer end plate 41, and the outer plug-in plate 42 and the inner plug-in plate 22 are respectively plugged and fixed to the two ends of the blade 3;

[0021] The inner plug-in board 22 is formed with a plurality of inner snap-in slots 221, and the outer plug-in board 42 is formed with an outer snap-in slot 421 opposite to the inner snap-in slot 221; the blade 3 is plugged with a plurality of ribs 5, and the two ends of the ribs 5 are respectively inserted into the inner snap-in slots 221 of the inner plug-in board 22 and the outer snap-in slots 421 of the outer plug-in board 42; the two side edges of the blade 3 close to the upper panel 31 and the lower panel 32 are respectively abutted against the upper panel 31 and the lower panel 32 and are formed with strip grooves, and rubber strips 6 are glued and fixed in the strip grooves, and the rubber strips 6 are glued and fixed on the inner surfaces of the upper panel 31 and the lower panel 32 respectively.

[0022] Preferably, the cross-sections of the inner plug-in board 22 and the outer plug-in board 42 are both airfoil-shaped, and the inner plug-in board 22 and the outer plug-in board 42 respectively abut against the inner surfaces of the upper panel 31 and the lower panel 32; the inner plug-in board 22 and the outer plug-in board 42 are respectively fixedly connected to the blade 3 by welding.

[0023] Preferably, the dimples 34 are distributed in an array on the upper panel 31 and the lower panel 32 of the blade 3 , and the two side edges of the rib plate 5 are respectively located between the dimples 34 of the upper panel 31 and between the dimples 34 of the lower panel 32 .

[0024] Preferably, the petiole 1 is formed with a plurality of annular grooves.

[0025] Preferably, the length of the inner plug-in plate 22 on the petiole connector 2 is greater than the length of the outer plug-in plate 42 on the blade cover 4, and the inner plug-in plate 22 is fixed to the blade 3 by riveting.

[0026] Preferably, the outer side edge of the inner end plate 21 and the outer side edge of the outer end plate 41 are flush with the outer surface of the blade 3 .

[0027] Working principle: This structure is a lightweight and high-performance airfoil blade. The technical point of the airfoil blade is mainly reflected in the blade 3. The main body of the blade 3 is sheet metal. The cross section of the blade 3 is wing-shaped. The plate body can be made into a blade 3 by bending, shaping and welding. The dimple 34 on the blade 3 can be processed before bending. The sheet metal of the flat structure is stamped and formed by multiple punches, and then the airfoil shape is made. It is easy to make and can effectively save manufacturing costs compared with cast blades.

[0028] The blade 3 with a sheet metal structure is lighter than the blade with a casting structure, and the rib plate 5 provided inside the blade 3 can effectively ensure the strength of the blade 3 .

[0029] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A lightweight, high-performance airfoil fan blade, comprising a cylindrical petiole (1), an airfoil blade (3) being arranged on one side of the petiole (1), one end of the blade (3) being fixedly connected to the petiole (1) via a petiole connector (2), and the other end of the blade (3) being fixedly connected to a blade cover plate (4), characterized in that: The blade (3) comprises an arc-shaped upper panel (31) and a lower panel (32); an arc-shaped transition plate (33) is formed between one side of the upper panel (31) and one side of the lower panel (32); the other side of the upper panel (31) and the other side of the lower panel (32) are welded and fixed together; a plurality of spherical recesses (34) are formed on the upper panel (31) and the lower panel (32); The petiole connecting member (2) comprises an airfoil-shaped inner end plate (21), the petiole (1) is welded and fixed to the middle part of the end surface of one side of the inner end plate (21), and an annular inner plug-in plate (22) is welded and fixed to the end surface of the other side of the inner end plate (21); the blade sealing plate (4) comprises an airfoil-shaped outer end plate (41), an annular outer plug-in plate (42) is welded and fixed to the end surface of the outer end plate (41), and the outer plug-in plate (42) and the inner plug-in plate (22) are respectively plugged and fixed to the two ends of the blade (3); The inner plug-in board (22) is formed with a plurality of inner snap-in slots (221), and the outer plug-in board (42) is formed with an outer snap-in slot (421) opposite to the inner snap-in slot (221); the blade (3) is plugged with a plurality of ribs (5), and the two ends of the ribs (5) are respectively inserted into the inner snap-in slots (221) of the inner plug-in board (22) and the outer snap-in slots (421) of the outer plug-in board (42); the two side edges of the blade (3) close to the upper panel (31) and the lower panel (32) are respectively abutted against the upper panel (31) and the lower panel (32) and are formed with strip grooves, and a rubber strip (6) is glued and fixed in the strip groove, and the rubber strip (6) is glued and fixed on the inner surface of the upper panel (31) and the lower panel (32).

2. A lightweight and high-performance airfoil blade according to claim 1, characterized in that: The cross-sections of the inner plug-in board (22) and the outer plug-in board (42) are both airfoil-shaped. The inner plug-in board (22) and the outer plug-in board (42) are respectively against the inner surfaces of the upper panel (31) and the lower panel (32). The inner plug-in board (22) and the outer plug-in board (42) are respectively fixedly connected to the blade (3) by welding.

3. A lightweight and high-performance airfoil blade according to claim 1, characterized in that: The dimples (34) are distributed in an array on the upper panel (31) and the lower panel (32) of the blade (3), and the two side edges of the rib plate (5) are respectively located between the dimples (34) of the upper panel (31) and between the dimples (34) of the lower panel (32).

4. A lightweight and high-performance airfoil blade according to claim 1, characterized in that: The petiole (1) is formed with a plurality of annular grooves.

5. A lightweight and high-performance airfoil blade according to claim 1, characterized in that: The length of the inner plug-in plate (22) on the petiole connector (2) is greater than the length of the outer plug-in plate (42) on the blade cover (4), and the inner plug-in plate (22) is fixed to the blade (3) by riveting.

6. A lightweight and high-performance airfoil blade according to claim 1, characterized in that: The outer side edge of the inner end plate (21) and the outer side edge of the outer end plate (41) are flush with the outer surface of the blade (3).

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