Combined multifunctional protective mesh enclosure for axial flow fan
By introducing flow guide components into the axial flow fan mesh cover and replacing some metal coils, the problem of increasing costs and degradation of performance in the traditional mesh cover is solved, and more efficient fan aerodynamic performance and lower manufacturing costs are achieved.
Patent Information
- Application Number
- CN202421457148.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-25
AI Technical Summary
While meeting safety standards, the traditional axial flow fan mesh cover increases material costs and processing costs, resulting in a decrease in fan aerodynamic performance and inconvenient installation.
A combined multi-function protective mesh cover is designed. By installing flow guide parts on the mesh cover body and replacing some metal coils, it can meet safety standards while improving the fan aerodynamic performance and reducing manufacturing costs.
On the premise of meeting safety standards, the fan aerodynamic performance is improved, product costs are reduced, serial production is facilitated, and complex welding operations are reduced.
Smart Images
Figure CN222526592U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ventilation equipment mesh cover manufacturing, in particular to a combined multifunctional protective mesh cover for an axial flow fan. Background Art
[0002] In the field of ventilation equipment technology, axial flow fans are a common type of equipment. Their main function is to generate air flow through rotating blades, thereby achieving the purpose of ventilation. The structure of an axial flow fan generally includes a housing, an impeller, a motor, a mesh cover, etc. The rotating impeller and the motor are fixed in the housing through the mesh cover. The mesh cover provides protection for the fan, and the structural design of the mesh cover affects the performance of the axial flow fan.
[0003] In the field of mesh manufacturing technology, multiple metal wires are usually welded on a support bracket to form a mesh structure with a certain shape and strength. The design of the mesh must comply with safety standards, that is, the spacing between the mesh ribs in the entire area and the distance from the ribs to the blades of the rotating parts meet the mechanical safety standards. In traditional mesh designs, in order to meet safety regulations, the number of mesh ribs, the diameter of the ribs, the height of the mesh, or a combination of the three methods are generally adopted. Increasing the number of ribs and the diameter of the ribs will increase the material cost and processing cost, which will in turn increase the weight of the mesh and the weight of the whole machine. At the same time, due to the obstruction of the flow caused by the increase in the number of mesh ribs, the aerodynamic performance of the fan is reduced. While increasing the height of the mesh without changing the number of ribs and the diameter of the ribs will not increase the obstruction to the flow and cause the performance of the fan to decrease, increasing the height of the mesh will also increase the material cost and processing cost, and due to the increase in the height of the mesh, the height of the whole machine is increased, which brings inconvenience to customers' installation, and even makes it impossible to install and use. Utility Model Content
[0004] In order to solve the above technical problems, the utility model designs a combined multifunctional protective mesh cover for axial flow fans, including a mesh cover body and a flow guide component. The flow guide component replaces part of the metal ribs in the traditional mesh cover, so that the mesh cover can improve the aerodynamic performance of the fan while meeting safety regulations, while effectively reducing product costs and facilitating serial production of products.
[0005] The utility model adopts the following technical solutions:
[0006] A combined multifunctional protective mesh cover for an axial flow fan comprises a mesh cover body, wherein the mesh cover body is composed of a supporting bracket and concentric ribs, and a flow guide component is detachably mounted on the mesh cover body, wherein the flow guide component is composed of concentric circular rings and a plurality of flow guide blades arranged thereon and connecting different circular rings.
[0007] Preferably, a connecting structure is arranged at the root and top of the guide blade close to the air outlet side of the mesh cover, and both sides of the guide component are fixedly engaged with the concentric ribs through the connecting structure.
[0008] Preferably, the supporting bracket is made of long flat steel or round steel wire.
[0009] Preferably, the supporting brackets are at least 3 groups, which are evenly arranged in radially equal parts along the mesh cover body.
[0010] Preferably, the support bracket includes a support bracket bending section 1, a support bracket straight section and a support bracket bending section 2, and the concentric ribs are distributed at the support bracket bending section 1 and the support bracket bending section 2.
[0011] Preferably, the concentric coil reinforcement may be made of wires with different diameters according to strength requirements.
[0012] Preferably, the guide component is installed at the straight section of the supporting bracket.
[0013] Preferably, the flow guide component is integrally injection molded. Alternatively, to further reduce costs, the flow guide component can be injection molded in blocks, with the number of blocks being the same as the number of support brackets.
[0014] Preferably, the number of guide blades of the guide component is N, where N≥10. Through the design of the support bracket, fans with similar sizes can use the same guide component, thus realizing serialized production of the fans and further reducing the manufacturing cost of the fans.
[0015] Preferably, the spacing between the concentric ribs and the spacing between the concentric rings meet safety standards.
[0016] The beneficial effects of the utility model are as follows: the utility model reduces some metal ribs on the basis of the traditional mesh cover and replaces them with plastic guide components, and does not increase the height of the mesh cover while meeting safety regulations; the manufacturing cost of the combined multifunctional protective mesh cover is reduced by adopting this solution, and complex welding operations are reduced. In addition, due to the presence of the guide component, the aerodynamic performance of the fan is not affected, and the aerodynamic performance of the fan can be improved through the reasonable design of the guide blades. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A structural schematic diagram of the utility model;
[0018] Figure 2 This is a structural schematic diagram of the mesh cover body of the utility model;
[0019] Figure 3 This is a structural schematic diagram of the flow guide component in the utility model;
[0020] In the figure: 1. mesh cover body, 2. guide component, 11. support bracket, 12. concentric ribs, 21. concentric rings, 22. guide blades, 23. connection structure, 111. support bracket bending section 1, 112. support bracket straight section, 113. support bracket bending section 2. DETAILED DESCRIPTION
[0021] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:
[0022] Example: Figure 1-Figure 3 As shown, a combined multifunctional protective mesh cover for an axial flow fan includes a mesh cover body 1 and a guide component 2. The mesh cover body 1 is composed of a support bracket 11 and concentric ribs 12. The support bracket is made of a long flat steel strip, including a support bracket bending section 111, a support bracket straight section 112 and a support bracket bending section 2 113. The concentric ribs 12 are distributed at the support bracket bending section 111 and the support bracket bending section 2 113. The guide component includes concentric rings 21 and a plurality of guide blades 22 connecting the concentric rings. A connecting structure 23 is arranged at the root and top of the guide blade near the mesh cover air outlet side, and the two sides of the guide component are fixed to the concentric ribs 12 through the connecting structure.
[0023] In order to further reduce the manufacturing cost, the guide component of this embodiment is made by block injection molding, and the number of blocks is the same as the number of support brackets 11, which is four. The number of guide blades of a single guide component is four.
[0024] The diameter of the concentric ribs distributed at the support bracket bending section 111 and the support bracket bending section 2 113 is 3 mm. According to the strength calculation results, the diameter of the concentric ribs 12 on both sides of the support bracket bending section 111 and the support bracket bending section 2 113 is increased to 6 mm.
[0025] The spacing between the concentric ribs and the spacing between the concentric rings of the flow guide components meet the safety standards.
[0026] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.
Claims
1. A combined multifunctional protective screen for an axial flow fan, comprising a screen body (1), wherein the screen body (1) is composed of a supporting frame (11) and concentric ribs (12), wherein: The mesh cover body (1) is detachably provided with a flow guide component (2), the flow guide component (2) comprising concentric circular rings (21) and a plurality of flow guide blades (22) arranged thereon and connecting different circular rings.
2. The combined multifunctional protective screen for an axial flow fan according to claim 1 is characterized in that: A connecting structure (23) is arranged at the root and top of the guide blade (22) close to the air outlet side of the mesh cover, and both sides of the guide component are engaged and fixed with the concentric ribs (12) through the connecting structure (23).
3. The combined multifunctional protective screen for an axial flow fan according to claim 1 is characterized in that: The support bracket (11) is made of long flat steel strips or round steel wires.
4. The combined multifunctional protective screen for an axial flow fan according to claim 1 is characterized in that: The supporting brackets (11) are at least three groups, and are evenly arranged in equal parts along the radial direction of the mesh cover body (1).
5. The combined multifunctional protective screen for an axial flow fan according to claim 1 is characterized in that: The support bracket (11) comprises a support bracket bending section 1 (111), a support bracket straight section (112) and a support bracket bending section 2 (113), and the concentric ribs (12) are distributed at the support bracket bending section 1 (111) and the support bracket bending section 2 (113).
6. The combined multifunctional protective screen for an axial flow fan according to claim 1 is characterized in that: The concentric coil reinforcement (12) may be made of reinforcement wires of different diameters according to strength requirements.
7. The combined multifunctional protective screen for an axial flow fan according to claim 1 is characterized in that: The flow guide component (2) is installed on the straight section (112) of the support bracket.
8. The combined multifunctional protective screen for an axial flow fan according to claim 1 is characterized in that: The flow guide component (2) is integrally injection-molded.
9. The combined multifunctional protective screen for an axial flow fan according to claim 1, characterized in that: The number of guide blades (22) of the guide component (2) is N, where N is ≥ 10.
10. The combined multifunctional protective screen for an axial flow fan according to claim 1, characterized in that: The spacing between the concentric ribs (12) and the spacing between the concentric rings (21) meet safety standards.