Axial flow fan capable of resisting vibration impact

Abstract

The utility model relates to the technical field of axial flow fans, and provides an anti-vibration and anti-impact axial flow fan which comprises a fan frame, an annular through groove, an annular protrusion, an optical shaft, a copper sleeve, an annular groove, a rolling bearing, a shaft check ring, an elastic piece, a rotor and blades. The optical shaft is arranged in the annular through groove through the copper sleeve, the annular groove is formed in the middle of the copper sleeve, the annular protrusion is arranged on the inner wall of the annular through groove and matched with the annular groove, and the rolling bearing is arranged on the optical shaft and matched with the annular groove. Through the interference fit of the copper sleeve and the optical shaft, the buffering effect of the elastic piece and the knurling design, the axial flow fan can keep a more stable operation state when bearing external vibration impact, faults and damage caused by vibration are reduced, and the service life of the fan is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to axial flow fan technical field, concretely relates to an axial flow fan of anti -vibration impact. BACKGROUND

[0002] As a kind of ventilation equipment widely used in industrial, commercial and household field, the stability and efficiency of axial flow fan are crucial to ensure the operation of overall system. However, the traditional axial flow fan is not well matched in the connection of optical axis, bearing and shell, which can easily lead to the offset of fan during rotation, thereby affecting concentricity. These problems not only affect the service life of fan, but also reduce its air supply efficiency and user experience. In view of this, the present application is proposed. SUMMARY

[0003] The present application provides an axial flow fan resistant to vibration and impact to solve the technical problem that the axial flow fan in the prior art is not well matched in the connection of optical axis, bearing and shell, which can easily lead to the offset of fan during rotation, thereby affecting concentricity. These problems not only affect the service life of fan, but also reduce its air supply efficiency and user experience. The above technical purpose of the utility model is realized by the following technical scheme:

[0004] An axial flow fan resistant to vibration and impact, comprising a fan frame, an annular through slot, an annular protrusion, an optical axis, a copper sleeve, an annular groove, a rolling bearing, an axial retaining ring, an elastic member, a rotor, a stator and a blade, the annular through slot is provided at the center of the fan frame, the optical axis is provided in the annular through slot through the copper sleeve, the annular groove is provided in the middle of the copper sleeve, the annular protrusion is provided on the inner wall of the annular through slot, the annular protrusion cooperates with the annular groove, the rolling bearing is provided on the optical axis, the axial retaining ring is provided on the optical axis away from the copper sleeve, the elastic member is sleeved on the optical axis, the elastic member is located between the axial retaining ring and the rolling bearing, the rotor is provided on the rolling bearing, the stator is provided outside the rotor, and the blade is connected with the rotor by screws.

[0005] Further, a first frame body is provided at the center of the fan frame, and the annular through slot is provided at the center of the first frame body.

[0006] Further, a second frame body is provided at the center of the blade, and a cylindrical cavity is formed inside the first frame body and the second frame body after being closed.

[0007] Further, the copper sleeve and the optical axis are in interference fit.

[0008] Further, the elastic member is a spring.

[0009] Further, the surfaces on both sides of the annular groove of the copper sleeve are provided with knurls.

[0010] Further, the blade is a glass fiber reinforced plastic blade.

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

[0012] By adopting the interference fit of the copper sleeve and the optical axis, the buffering effect of the elastic member and the knurl design, the axial flow fan of the application can maintain a more stable running state when bearing external vibration impact, reduces the failure and damage caused by vibration, prolongs the service life of the fan, the integrated die casting technology of the aluminum alloy frame and the copper sleeve, and the cooperation design of the annular groove and the annular protrusion, which enhances the overall stability and rigidity of the fan structure. This design makes the fan still maintain a stable running state when bearing a large load. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a structural schematic view of the fan frame section of the utility model;

[0015] Figure 3 It is a structural schematic view of the first part of the utility model;

[0016] Figure 4 It is a structural schematic view of the second part of the utility model;

[0017] Figure 5 It is a structural schematic view of the copper sleeve of the utility model;

[0018] Figure 6 It is a structural schematic view of the blade of the utility model.

[0019] In the figure: 1, fan frame; 2, annular through slot; 3, annular protrusion; 4, optical axis; 5, copper sleeve; 6, annular groove; 7, rolling bearing; 8, shaft check ring; 9, elastic member; 10, rotor; 11, stator; 12, blade; 13, first frame body; 14, second frame body. DETAILED DESCRIPTION

[0020] In the description of the utility model, it is necessary to explain that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or positional relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it is necessary to explain that the terms "installation", "connection", "connection" should be understood broadly unless otherwise specified and limited, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail below in combination with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0023] Please refer to the drawings Figures 1-6 A kind of anti-vibration impact axial flow fan, including fan frame 1, annular through slot 2, annular protrusion 3, optical axis 4, copper bushing 5, annular groove 6, rolling bearing 7, shaft baffle 8, elastic element 9, rotor 10, stator 11 and blade 12, annular through slot 2 is set in the center position of fan frame 1, optical axis 4 is set in annular through slot 2 by copper bushing 5, annular groove 6 is set in the middle of copper bushing 5, annular protrusion 3 is set in the inner wall of annular through slot 2, annular protrusion 3 cooperates with annular groove 6, rolling bearing 7 is set on optical axis 4, shaft baffle 8 is set on the side of optical axis 4 away from copper bushing 5, elastic element 9 is sleeved on optical axis 4, elastic element 9 is located between shaft baffle 8 and rolling bearing 7, rotor 10 is set on rolling bearing 7, stator 11 is set on the outside of rotor 10, blade 12 is connected with rotor 10 by screw.

[0024] Adopting the above technical scheme, the fan frame 1 is used as the support structure of the whole fan, the annular through groove 2 provided in the center of the fan frame 1 provides space for installation of the light shaft 4 and the copper sleeve 5, the light shaft 4 is fixed in the annular through groove 2 in an interference fit manner through the copper sleeve 5, the interference fit manner ensures the stability and concentricity of the light shaft 4 during rotation, reduces the deviation caused by vibration, the cooperation of the annular recess 6 and the annular protrusion 3 further enhances the positioning stability of the copper sleeve 5 in the fan frame 1, prevents displacement of the copper sleeve 5 during operation, the setting of the rolling bearing 7 reduces the friction resistance during rotation of the rotor 10, improves the operation efficiency, the combination of the shaft check ring 8 and the elastic member 9 not only provides axial limiting for the rotor 10, but also effectively absorbs vibration energy through the buffering effect of the elastic member 9, enhances the anti-vibration impact capability of the fan, the blades 12 on the rotor 10 are connected through screws, which ensures the stability of the blades 12 during high-speed rotation, in detail, the blades adopt goe417 standard airfoils, which optimizes the aerodynamic performance, improves the air supply efficiency and reduces the noise.

[0025] In some embodiments, a first frame body 13 is arranged at the center position of the fan frame 1, and the annular through groove 2 is arranged at the center position of the first frame body 13.

[0026] In some embodiments, a second frame body 14 is arranged at the center position of the blades 12, and a cylindrical cavity is formed inside the fan frame 1 after the first frame body 13 and the second frame body 14 are closed, and the stator 11 and the rotor 10 are located in the cylindrical cavity after being closed.

[0027] The first frame body 13 is located at the center position of the fan frame 1, and the annular through groove 2 inside the first frame body 13 provides more accurate positioning space for installation of the light shaft 4 and the copper sleeve 5, so that the structure of the whole fan is more compact, and the convenience and accuracy of installation are improved, when the first frame body 13 and the second frame body 14 at the center of the blades 12 are closed, a closed cylindrical cavity is formed between them, which provides protection for key components such as the stator 11 and the rotor 10, reduces the influence of the external environment on the operation of the fan, and also facilitates the maintenance and maintenance of the fan, ensures the stability and safety during operation. In addition, it also helps to improve the overall rigidity and anti-vibration capability of the fan, so that the fan can maintain a more stable operating state when subjected to external vibration impact.

[0028] In some embodiments, the copper sleeve 5 and the light shaft 4 are in interference fit. The interference fit makes the copper sleeve 5 tightly wrap around the light shaft 4, prevents loosening or wear caused by vibration or long-term operation, improves the stability and concentricity of the light shaft 4 during rotation, and prolongs the service life of the fan.

[0029] In some embodiments, the elastic member 9 is a spring. As a buffer element between the shaft retaining ring 8 and the rolling bearing 7, the spring can effectively absorb and disperse vibration energy, reducing the impact of vibration on the operation of the fan. At the same time, the elastic properties of the spring can also adapt to the slight displacement of the rotor 10 during rotation, ensuring the stable operation of the fan under complex working conditions.

[0030] In some embodiments, the surfaces of the copper sleeve 5 on both sides of the annular groove 6 are knurled. The knurling design not only enhances the friction between the copper sleeve 5 and the fan frame 1, improving the positioning stability of the copper sleeve 5, but also increases the contact area and roughness, improving the bonding strength of the copper sleeve 5 with the surrounding aluminum alloy material, which helps to prevent the copper sleeve 5 from falling off or loosening during vibration, further enhancing the anti-vibration impact capability of the fan.

[0031] In some embodiments, the blades 12 are glass fiber reinforced plastic blades 12. This material can reduce the self-weight of the blades 12, improve the anti-vibration impact capability, and ensure the air supply efficiency.

[0032] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation of the present application. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present application shall be included within the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A axial flow fan resistant to vibration impact, characterized by, The fan frame, the annular through slot, the annular protrusion, the optical axis, the copper sleeve, the annular recess, the rolling bearing, the shaft retainer, the elastic member, the rotor, the stator and the blade, the annular through slot is arranged at the center of the fan frame, the optical axis is arranged in the annular through slot through the copper sleeve, the annular recess is arranged in the middle of the copper sleeve, the annular protrusion is arranged on the inner wall of the annular through slot, the annular protrusion cooperates with the annular recess, the rolling bearing is arranged on the optical axis, the shaft retainer is arranged on the optical axis away from the copper sleeve, the elastic member is sleeved on the optical axis, the elastic member is located between the shaft retainer and the rolling bearing, the rotor is arranged on the rolling bearing, the stator is arranged outside the rotor, and the blade is connected with the rotor through screws.

2. A vibration and impact resistant axial fan as claimed in claim 1, wherein The first frame body is arranged at the center of the fan frame, and the annular through slot is arranged at the center of the first frame body.

3. A vibration and impact resistant axial fan as claimed in claim 2, wherein The second frame body is arranged at the center of the blade, and the first frame body and the second frame body form a cylindrical cavity after being closed.

4. The anti-vibration-impact axial flow fan according to claim 1, wherein The copper sleeve and the optical axis are in interference fit.

5. The anti-vibration-impact axial fan according to claim 1, wherein The elastic member is a spring.

6. The anti-vibration-impact axial fan according to claim 1, wherein The surfaces on both sides of the annular recess of the copper sleeve are knurled.

7. The anti-vibration-impact axial fan according to claim 1, wherein The blade is a glass fiber reinforced plastic blade.

Images