Reinforced fan with fan blade rubber coating structure

Abstract

The utility model discloses a reinforced fan with a fan blade rubber coating structure, which comprises a fan blade, and the fan blade is coated and fixed on a motor shell through a fan blade shell; a plurality of rubber coating holes are formed in a base of the motor shell, the rubber coating holes are communicated with the inside and the outside of the motor shell, a rubber coating part is formed by feeding materials into the rubber coating holes and filling the rubber coating holes during rubber coating forming of the fan blade shell, and the rubber coating part penetrates through the rubber coating holes to be combined and fixed with the motor shell; each rubber coating part is provided with a heat dissipation hole, and the heat dissipation holes penetrate through the fan blade shell and the rubber coating parts so as to communicate the interior of the motor shell with the exterior of the fan blade shell. In this way, the combination strength of the fan blade shell and the motor shell can be remarkably improved, the risk that the fan blades fall off is eliminated, and the problem of rubber leakage is solved, so that larger and more holes can be formed, more heat dissipation holes are formed, and the heat dissipation performance is remarkably improved. In addition, the edge of the fan blade is provided with the bent part which is obliquely bent towards the air inlet direction, the effect of enlarging the air inlet can be achieved, and therefore the air inlet amount can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan / air blower mainly used for heat dissipation in products such as the new energy industry, industrial control, servers, game consoles, air-conditioning cabinets, smart home appliances, computer cases, etc. Background Art

[0002] Fans / air blowers are applied in many products, such as power supplies, industrial control, servers, industrial equipment, charging piles, computer cases, household appliances, etc., and their main function is to dissipate heat. A fan generally includes a fan frame and fan blades (wind blades), and the fan blades are generally fixed to the motor housing by means of forming a fan blade housing through rubber coating. The existing fans usually have the following problems: First, the fan blade housing is generally only fixed by covering the outer surface of the motor housing, and the bonding strength is not high enough, so there is a risk of falling off; Second, due to concerns about glue leakage problems, generally too many and too large-diameter heat dissipation holes cannot be opened on the base of the motor housing. The number of holes is usually 2-4, and the hole diameter is usually about 2 mm, resulting in poor heat dissipation capacity, especially for fans with larger power; Third, the ends of the fan blades are usually smooth structures, which is not conducive to increasing the air intake volume. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a reinforced fan blade rubber coating structure fan with a simple structure, more reasonable design, higher bonding strength between the fan blade and the motor housing, better heat dissipation performance, and conducive to increasing the air intake volume in view of the shortcomings of the existing technology.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: A reinforced fan blade rubber coating structure fan includes fan blades, and the fan blades are fixed to the motor housing by covering the fan blade housing. It is characterized in that: a plurality of rubber coating holes are provided on the base of the motor housing, the rubber coating holes communicate the inside and outside of the motor housing, and when the fan blade housing is formed by rubber coating, a rubber coating part is formed by feeding material into the rubber coating holes and filling the rubber coating holes, and the rubber coating part penetrates through the rubber coating holes to realize the bonding and fixing with the motor housing; a heat dissipation hole is provided on each rubber coating part, and the heat dissipation hole penetrates through the fan blade housing and the rubber coating part to communicate the inside of the motor housing with the outside of the fan blade housing.

[0005] Preferably, the aperture of the rubber coating hole is more than 4 mm, such as 4-8 mm, and the aperture of the heat dissipation hole is 2-3 mm.

[0006] Preferably, there are more than 8-12 rubber coating holes, which is more than the traditional maximum of six, and the rubber coating holes are evenly arranged in a circle on the base.

[0007] Furthermore, the heat dissipation hole is opened at the center of the rubber coating part, and it forms a concentric structure with the rubber coating hole.

[0008] Furthermore, the part of the rubber-coated portion extending into the motor housing wraps around the inner edge of the rubber-coating hole, making the connection between the rubber-coated portion and the motor housing more stable.

[0009] Furthermore, a bent portion is provided at the edge in the air inlet direction of the fan blade. The bent portion bends towards the air inlet direction of the fan, forming an angle with the main body portion of the fan blade. Such a structure is similar to the upward bending of the end of an airplane wing, which can cut the air and increase the air inlet, thus facilitating an increase in the air intake volume.

[0010] Preferably, the angle formed by the bent portion and the main body portion of the fan blade is 120 - 170 degrees. For example, the angle on the air inlet surface is 165 degrees, and the angle on the air outlet surface is 150 degrees.

[0011] In the present utility model, by opening a relatively large number of and relatively large-diameter rubber-coating holes on the base of the motor housing, when forming the fan blade, the rubber material of the fan blade housing directly enters the rubber-coating holes to form a rubber-coated portion that is fixedly combined with the inside of the base through the rubber-coating holes, and then heat dissipation holes are directly opened on the rubber-coated portion. In this way, not only can the strength of the connection between the fan blade housing and the motor housing be significantly improved, eliminating the risk of the fan blade falling off, but also since the rubber-coated portion is directly formed at the rubber-coating holes, the problem of rubber material leakage is solved. Thus, the holes can be made larger and more numerous, and then a larger number of heat dissipation holes can be provided, significantly improving the heat dissipation performance and extending the service life of the fan. In addition, by providing a bent portion that is inclined and bent towards the air inlet direction at the edge in the air inlet direction of the fan blade, the effect of increasing the air inlet can be achieved, thereby increasing the air intake volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0013] Figure 2 is a three-dimensional structure diagram of the present utility model from another angle;

[0014] Figure 3 is a plan view of the present utility model;

[0015] Figure 4 is a plan view of the present utility model from another angle;

[0016] Figure 5 is a sectional view of the present utility model;

[0017] Figure 6 is a structure diagram of the motor housing;

[0018] Figure 7 is a curve graph of the air volume and air pressure relationship of a traditional fan;

[0019] Figure 8 is a curve graph of the air volume and air pressure relationship of the present utility model.

[0020] In the figure, 1 is the motor housing, 11 is the base, 12 is the encapsulation hole, 2 is the fan blade housing, 21 is the encapsulation part, 3 is the fan blade, 31 is the bending part, and 4 is the heat dissipation hole. Detailed implementation mode

[0021] In this embodiment, referring to Figures 1 - 5 , the reinforced fan blade encapsulation structure fan includes a fan blade 3. The fan blade 3 is covered and fixed on the motor housing 1 through its fan blade housing 2. A plurality of encapsulation holes 12 are provided on the base 11 of the motor housing 1. The encapsulation holes 12 communicate inside and outside the motor housing 1. When the fan blade housing 2 is encapsulated and molded, the encapsulation part 21 is formed by feeding materials into the encapsulation holes 12 and filling the encapsulation holes 12. The encapsulation part 21 penetrates through the encapsulation holes 12 to realize the combination and fixation with the motor housing 1, playing a role similar to an anchoring point, thereby significantly improving the stability of the combination; heat dissipation holes 4 are provided on each encapsulation part 21, and the heat dissipation holes 4 penetrate through the fan blade housing 2 and the encapsulation part 21 to communicate the inside of the motor housing 1 with the outside of the fan blade housing 2.

[0022] The aperture of the encapsulation hole 12 is not less than 4 - 8 mm, and the aperture of the heat dissipation hole 4 is 2 - 3 mm. Although the aperture of the heat dissipation hole 4 itself does not change significantly, the heat dissipation performance can be improved by increasing the number.

[0023] A total of more than 8 - 12 encapsulation holes 12 are provided, such as 8, which is more than the traditional maximum of six. Each encapsulation hole 12 is evenly arranged on the base 11 to form a circle, so that the heat dissipation is uniform.

[0024] The heat dissipation hole 4 is opened at the center of the encapsulation part 12, and it forms a concentric structure with the encapsulation hole 12.

[0025] The part of the encapsulation part 21 extending into the motor housing 1 wraps the inner edge of the encapsulation hole 12, making the combination of the encapsulation part 21 and the motor housing 1 more stable.

[0026] A bending part 31 is provided at the edge of the fan blade 3 in the air inlet direction. The bending part 31 bends towards the air inlet direction of the fan and forms an angle with the main body part of the fan blade 3. Such a structure is similar to the upward bending of the end of an airplane wing, which can play the role of cutting the wind and increasing the air inlet, thereby being beneficial to increasing the air intake.

[0027] The angle formed by the bending part 31 and the main body part of the fan blade 3 is 120 - 170 degrees. For example, the angle of the air inlet surface is 165 degrees, and the angle of the air outlet surface is 150 degrees.

[0028] After increasing the inner diameter of the air duct and the diameter of the fan blade in this way, the air volume and air pressure can be significantly increased. The test results are shown in Table 1 and Table 2, where Table 1 is the performance test result of the traditional fan, and Table 2 is the performance test result of the fan of the present invention.

[0029] Table 1 Performance test results of traditional fans

[0030]

[0031] Table 2 Performance test results of the fan of the present utility model

[0032]

[0033] From Table 1 and Table 2, Figure 7 and Figure 8 it can be seen that the maximum wind pressure of the fan of the present utility model is 82.30 mmAq, and the maximum air volume is 511.20 CFM (when the fan speed is 6540 revolutions per minute); while the maximum wind pressure of the traditional fan is 60.40 mmAq, and the maximum air volume is 422.30 CFM (when the fan speed is 6540 revolutions per minute). Obviously, the wind pressure and air volume of the present utility model are both greater than those of the traditional fan.

[0034] The present utility model has been described in detail above. The above description is only a preferred embodiment of the present utility model, and it cannot limit the scope of implementation of the present utility model. That is, all equivalent changes and modifications made according to the scope of this application should still fall within the scope covered by the present utility model.

Claims

1. A reinforced fan with rubber-coated blade structure, comprising a fan blade, wherein the fan blade is fixed on a motor housing by being covered with a fan blade shell, and characterized in that: A plurality of rubber-coated holes are arranged on the base of the motor shell, and the rubber-coated holes connect the inside and the outside of the motor shell. When the fan blade shell is rubber-coated and formed, a rubber-coated portion is formed by feeding material into the rubber-coated holes and filling the rubber-coated holes. The rubber-coated portion passes through the rubber-coated holes to be combined and fixed with the motor shell; a heat dissipation hole is arranged on each rubber-coated portion, and the heat dissipation hole passes through the fan blade shell and the rubber-coated portion to connect the inside of the motor shell with the outside of the fan blade shell.

2. The reinforced fan with rubber-coated blades according to claim 1, characterized in that: The diameter of the rubber-coated holes is greater than 4 mm, and the diameter of the heat dissipation holes is 2-3 mm.

3. The fan with reinforced rubber-coated blade structure according to claim 1 or 2, characterized in that: There are 8 to 12 rubber-encapsulated holes in total, and the rubber-encapsulated holes are evenly arranged on the base to form a circle.

4. The reinforced fan with rubber-coated blades according to claim 1, characterized in that: The heat dissipation hole is opened at the center of the rubber-coated part, and forms a concentric structure with the rubber-coated hole.

5. The reinforced fan with rubber-coated blades according to claim 1, characterized in that: The rubber-coated portion extends into the portion of the motor housing to cover the inner edge of the rubber-coated hole.

6. The reinforced fan with rubber-coated blade structure according to claim 1, characterized in that: A bending portion is arranged on the edge of the fan blade in the air inlet direction, and the bending portion is bent toward the air inlet direction of the fan to form an angle with the main body of the fan blade.

7. The reinforced fan with rubber-coated blades according to claim 6, characterized in that: The angle formed by the bent portion and the main body of the fan blade is 120-170 degrees.

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