Volute structure of axial flow fan

Abstract

The volute structure of the axial flow fan comprises an axial flow fan volute body, a noise reduction mechanism is arranged at the front end of the inner wall of the axial flow fan volute body, noise reduction and sound insulation cotton is arranged in the noise reduction mechanism, a partition plate is arranged between every two adjacent noise reduction and sound insulation cotton, fan blades are arranged in the noise reduction mechanism, and the fan blades are arranged in the axial flow fan volute body. The rear ends of the fan blades are connected with a motor, the motor is arranged in a motor fixing sleeve, and a supporting frame is arranged below the motor fixing sleeve. According to the axial flow fan volute, the noise reduction mechanism is arranged at the position, aligned with the fan blades, of the inner wall of the axial flow fan volute body, the noise reduction and sound insulation cotton is arranged in the noise reduction mechanism, noise generated by the blades can be reduced, the noise transmitted into the shell by the blades can be effectively shielded, and the noise reduction effect is good. And the noise reduction and sound insulation cotton is connected with the noise reduction mechanism in an embedded mode, so that the noise reduction and sound insulation cotton is easier to disassemble and assemble, and the noise reduction and sound insulation cotton is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the relevant field of axial flow fans, in particular to a volute structure of an axial flow fan. Background Art

[0002] Axial flow fans have a wide range of uses. They are air flows in the same direction as the axis of the fan blades. For example, electric fans and air conditioner outdoor fans are axial flow fans. They are called "axial flow" because the gas flows parallel to the fan axis. Axial flow fans are usually used in situations where the flow rate requirements are high and the pressure requirements are low. Axial flow fans are fixed in position and move air. Axial flow fans are mainly composed of fan impellers and casings. They have a simple structure but very high data requirements. They can be used for ventilation in general factories, warehouses, offices, residences and other places. They can also be used for air coolers, evaporators, condensers, spray drops, etc.

[0003] The volute structure of the axial flow fan in the prior art still has certain drawbacks in use. The traditional volute structure is relatively simple. When the fan blades run at high speed, the propeller-like noise caused by the pressure field of the rotor blade movement is relatively loud and easily causes noise pollution. Utility Model Content

[0004] The purpose of the utility model is to provide a volute structure for an axial flow fan to solve the problem that the traditional volute structure proposed in the above background technology is relatively simple, and when the fan blades run at high speed, the propeller-like noise caused by the pressure field of the movement of the rotor blades is relatively large, which easily causes noise pollution.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a volute structure of an axial flow fan, comprising an axial flow fan volute main body, a noise reduction mechanism is provided at the front end of the inner wall of the axial flow fan volute main body, noise reduction and sound insulation cotton is provided inside the noise reduction mechanism, and partitions are provided between adjacent noise reduction and sound insulation cottons, fan blades are provided inside the noise reduction mechanism, the rear end of the fan blades is connected to a motor, the motor is arranged inside a motor fixing sleeve, a support frame is provided below the motor fixing sleeve, a protective net is provided at the end position inside the axial flow fan volute main body, mounting holes are provided at the edge positions of the two ends of the axial flow fan volute main body, a fixed bracket is provided at the bottom of the axial flow fan volute main body, and a fixed bottom plate is provided at the lower end of the fixed bracket.

[0006] In a further embodiment, a rear end surface of the noise reduction mechanism is provided with a plurality of hexagonal silencer holes, an inner wall surface of the noise reduction mechanism is provided with a plurality of silencer ports, and the silencer ports are configured as strip structures.

[0007] In a further embodiment, the noise reduction and sound insulation cotton is connected to the noise reduction mechanism by inlaying, and a reinforcing protrusion is provided at the edge of the inner wall of the noise reduction mechanism, and the cross-section of the reinforcing protrusion is set to a trapezoidal structure.

[0008] In a further embodiment, the bottom of the support frame is fixedly connected to the axial flow fan volute body through an assembly inlay plate and an assembly inlay groove, a notch is provided at the position where the surface of the assembly inlay groove is connected to the support frame, and the support frame and the notch are connected by inlay.

[0009] In a further embodiment, the assembly mosaic plate and the assembly mosaic groove are fixedly connected by means of hexagon socket fixing bolts, and the cross-section of the assembly mosaic plate is set to a semicircular structure.

[0010] In a further embodiment, the motor fixing sleeve is fixedly connected to the motor via locking bolts, and the motor fixing sleeve is made of aluminum.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, a noise reduction mechanism is provided at the position where the inner wall of the axial flow fan volute body is aligned with the fan blades, and noise reduction and sound insulation cotton is provided inside the noise reduction mechanism, which can reduce the noise emitted by the blades and effectively shield the noise transmitted to the casing by the blades. The noise reduction and sound insulation cotton is connected to the noise reduction mechanism by inlaying. This installation method makes it easier to disassemble and assemble the noise reduction and sound insulation cotton, facilitates the replacement of the noise reduction and sound insulation cotton, and is easier to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a volute structure of an axial flow fan of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the noise reduction mechanism of the utility model;

[0015] Figure 3 It is a rear view of a volute structure of an axial flow fan of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the motor fixing sleeve of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the assembly inlay groove of the utility model;

[0018] Figure 6 It is a schematic diagram of the internal structure of the axial flow fan volute main body of the utility model.

[0019] In the figure: 1. Axial fan volute body; 2. Mounting hole; 3. Protective net; 4. Fan blade; 5. Noise reduction and sound insulation cotton; 6. Fixed bottom plate; 7. Fixed bracket; 8. Noise reduction mechanism; 9. Partition; 10. Hexagonal silencer hole; 11. Motor; 12. Assembly inlay groove; 13. Assembly inlay plate; 14. Support frame; 15. Motor fixing sleeve; 16. Locking bolt; 17. Notch; 18. Silencer port; 19. Reinforcement bump; 20. Hexagon socket fixing bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-6 The utility model provides an embodiment: a volute structure of an axial flow fan, including an axial flow fan volute body 1, a noise reduction mechanism 8 is provided at the front end of the inner wall of the axial flow fan volute body 1, a noise reduction sound insulation cotton 5 is provided inside the noise reduction mechanism 8, and a partition 9 is provided between adjacent noise reduction sound insulation cotton 5, a fan blade 4 is provided inside the noise reduction mechanism 8, and the rear end of the fan blade 4 is connected to the motor 11, and the motor 11 is arranged inside the motor fixing sleeve 15, and the motor fixing sleeve 15 is fixedly connected to the motor 11 by a locking bolt 16, and the motor fixing sleeve 15 is made of aluminum, and the locking bolt 16 is used to fix the installation position of the motor fixing sleeve 15 and the motor 11, and a support frame 14 is provided below the motor fixing sleeve 15, and an anti-noise sound insulation cotton 5 is provided at the end position inside the axial flow fan volute body 1 A protective net 3, mounting holes 2 are provided at the edge positions of both ends of the axial flow fan volute body 1, a fixing bracket 7 is provided at the bottom of the axial flow fan volute body 1, and a fixing bottom plate 6 is provided at the lower end of the fixing bracket 7. A noise reduction mechanism 8 is used to reduce and silence the axial flow fan volute body 1, and a noise reduction and sound insulation cotton 5 is used to eliminate noise. A partition plate 9 is used to increase the firmness of the noise reduction mechanism 8, and a fan blade 4 is used to convert mechanical energy into airflow energy. A motor 11 is used to convert electrical energy into mechanical energy to increase power. A support frame 14 is used to support and fix the motor fixing sleeve 15, and the motor fixing sleeve 15 is used to install and fix the motor 11. The protective net 3 is used to protect the fan blade 4, and the fixing bottom plate 6 is used to increase the stability of the axial flow fan volute body 1.

[0022] The rear end face of the noise reduction mechanism 8 is provided with a plurality of hexagonal silencer holes 10, and the inner wall surface of the noise reduction mechanism 8 is provided with a plurality of silencer ports 18, and the silencer ports 18 are arranged as strip structures, and the hexagonal silencer holes 10 and the silencer ports 18 are used to absorb the noise generated by the fan blades 4, thereby achieving a silencer effect.

[0023] The noise reduction and sound insulation cotton 5 is connected to the noise reduction mechanism 8 by inlaying, and a reinforcing protrusion 19 is provided at the edge of the inner wall of the noise reduction mechanism 8, and the cross-section of the reinforcing protrusion 19 is set to a trapezoidal structure. The inlay connection facilitates the installation or disassembly of the noise reduction and sound insulation cotton 5, and the reinforcing protrusion 19 is used to increase the firmness of the noise reduction mechanism 8.

[0024] The bottom of the support frame 14 is fixedly connected to the axial flow fan volute body 1 through the assembly inlay plate 13 and the assembly inlay groove 12. A notch 17 is provided at the position where the surface of the assembly inlay groove 12 is connected to the support frame 14, and the support frame 14 and the notch 17 are connected by inlaying. The connection between the assembly inlay plate 13 and the assembly inlay groove 12 facilitates the installation of the support frame 14, and the notch 17 is used to locate the installation position of the support frame 14; the assembly inlay plate 13 and the assembly inlay groove 12 are fixedly connected by the hexagon socket fixing bolts 20, and the cross-section of the assembly inlay plate 13 is set to a semicircular structure, and the hexagon socket fixing bolts 20 are used to fix the installation position of the assembly inlay plate 13 and the assembly inlay groove 12.

[0025] Working principle: When in use, the motor 11 is embedded and installed inside the motor fixing sleeve 15, fixed by the locking bolt 16, and the support frame 14 is assembled inside the axial flow fan volute body 1 by connecting the assembly embedding plate 13 with the assembly embedding groove 12, and fixed by the hexagonal fixing bolt 20, and then the fan blade 4 is installed at the front end of the motor 11, and the noise reduction and sound insulation cotton 5 is embedded and installed inside the noise reduction mechanism 8, and the protective net 3 is installed at the front end of the axial flow fan volute body 1 to improve the safety of use, and then the axial flow fan volute body 1 is installed at the desired position.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A volute structure of an axial flow fan, comprising an axial flow fan volute body (1), characterized in that: A noise reduction mechanism (8) is provided at the front end of the inner wall of the axial flow fan volute body (1), noise reduction and sound insulation cotton (5) is provided inside the noise reduction mechanism (8), and a partition (9) is provided between adjacent noise reduction and sound insulation cotton (5), a fan blade (4) is provided inside the noise reduction mechanism (8), and the rear end of the fan blade (4) is connected to a motor (11), the motor (11) is arranged inside a motor fixing sleeve (15), and a support frame (14) is provided below the motor fixing sleeve (15), a protective net (3) is provided at the end position inside the axial flow fan volute body (1), mounting holes (2) are provided at the edge positions of both ends of the axial flow fan volute body (1), a fixing bracket (7) is provided at the bottom of the axial flow fan volute body (1), and a fixing bottom plate (6) is provided at the lower end of the fixing bracket (7).

2. The volute structure of an axial flow fan according to claim 1, characterized in that: The rear end surface of the noise reduction mechanism (8) is provided with a plurality of hexagonal silencer holes (10), the inner wall surface of the noise reduction mechanism (8) is provided with a plurality of silencer ports (18), and the silencer ports (18) are configured as strip structures.

3. The volute structure of an axial flow fan according to claim 1, characterized in that: The noise reduction and sound insulation cotton (5) is connected to the noise reduction mechanism (8) by inlaying, and a reinforcement lug (19) is provided at the edge of the inner wall of the noise reduction mechanism (8), and the cross-section of the reinforcement lug (19) is set to a trapezoidal structure.

4. The volute structure of an axial flow fan according to claim 1, characterized in that: The bottom of the support frame (14) is fixedly connected to the axial flow fan volute body (1) via an assembly inlay plate (13) and an assembly inlay groove (12); a notch (17) is provided at a position where the surface of the assembly inlay groove (12) is connected to the support frame (14); and the support frame (14) and the notch (17) are connected by inlay.

5. The volute structure of an axial flow fan according to claim 4, characterized in that: The assembly inlay plate (13) and the assembly inlay groove (12) are fixedly connected via hexagon socket fixing bolts (20), and the cross section of the assembly inlay plate (13) is set to a semicircular structure.

6. The volute structure of an axial flow fan according to claim 1, characterized in that: The motor fixing sleeve (15) is fixedly connected to the motor (11) via locking bolts (16), and the motor fixing sleeve (15) is made of aluminum.

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