Flow guide cover for fan

Abstract

The utility model discloses a flow guide cover for a fan, which relates to the technical field of flow guide covers and comprises a mounting plate and a flow guide mesh cover. The flow guide net cover comprises flow guide pieces and grading rings, the grading rings are a plurality of circular rings which are gradually expanded from inside to outside, and the flow guide pieces are connected with every two adjacent grading rings and are connected with the grading rings and the mounting plate; the multiple flow deflectors are evenly arranged in the radial direction of the grading ring, and the distance between every two adjacent flow deflectors is gradually reduced from inside to outside. Turbulence and dynamic loss of airflow at the air inlet of the fan can be reduced to the maximum extent through the grading rings and the flow deflectors, noise of the fan can be reduced, and energy balance can be improved; the airflow resistance is reduced, and the operation efficiency of the fan is improved. The fairing is compact and reasonable in structural design, small in occupied space and convenient to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of air guide covers, in particular to an air guide cover for a fan. Background Art

[0002] In the fan system, the air deflector, as one of the key components, plays a vital role in guiding and distributing the airflow. The traditional air deflector design often has problems such as uneven airflow distribution, large resistance, and high noise, which affects the overall performance of the fan. Therefore, it is particularly important to design a air deflector with a reasonable structure and superior performance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a guide cover for a fan, which realizes uniform distribution and effective guidance of airflow through the ingenious combination of a grading ring and a guide vane, reduces airflow resistance, reduces noise, and improves the operating efficiency of the fan.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is: a guide cover for a fan, comprising a mounting plate and a guide mesh cover; the guide mesh cover comprises guide vanes and grading rings, the grading rings are a plurality of circular rings that gradually expand from the inside to the outside, the guide vanes connect two adjacent grading rings and connect the grading ring and the mounting plate; the guide vanes are uniformly arranged along the radial direction of the grading ring and the spacing between adjacent guide vanes gradually decreases from the inside to the outside.

[0005] Furthermore, the graded ring includes an inner ring, a middle ring and an outer ring arranged from inside to outside, the inner ring and the middle ring are concentric rings located on the same plane, and the outer ring is concentric with the middle ring and the inner ring and is staggered with the two.

[0006] Furthermore, the guide vane includes a central guide vane, a primary guide vane, a secondary guide vane and a tertiary guide vane, the central guide vane is cross-shaped and its edge is connected to the inner side of the inner ring, the primary guide vane connects the inner ring and the middle ring, the secondary guide vane connects the middle ring and the outer ring, and the tertiary guide vane connects the outer ring and the mounting plate.

[0007] Furthermore, the central guide vane and the first-level guide vane extend in a straight line, and the second-level guide vane and the third-level guide vane are guide vanes that extend in a curved shape.

[0008] Compared with the prior art, the utility model has the following advantages: the utility model can minimize the turbulence and dynamic loss of the airflow at the air inlet of the fan through the grading ring and the guide vane, which helps to reduce the fan noise and improve the energy balance; it reduces the airflow resistance and improves the operating efficiency of the fan. The deflector structure is compact and reasonable, occupies little space, and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a structural schematic diagram of a flow guide cover for a fan.

[0010] Figure 2 The utility model is a front view of a guide cover for a fan.

[0011] As shown in the figure: 1. Mounting plate, 2. Guide grille, 3. Guide vane, 4. Grading ring, 5. Inner ring, 6. Middle ring, 7. Outer ring, 8. Center guide vane, 9. First-stage guide vane, 10. Second-stage guide vane, 11. Third-stage guide vane, 12. Mounting hole. DETAILED DESCRIPTION

[0012] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inside", "outside", "vertical", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0013] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] The utility model is further described in detail below with reference to the accompanying drawings.

[0015] Combined with Figure 1-2 The specific implementation process of the utility model of a guide cover for a fan is as follows:

[0016] A guide cover for a fan comprises two parts: a mounting plate 1 and a guide mesh cover 2. The guide mesh cover 2 is further divided into a guide plate 3 and a grading ring 4. Through the synergistic effect of the two, precise control of airflow is achieved.

[0017] The grading ring 4 is composed of a plurality of circular rings which gradually expand from the inside to the outside, including an inner ring 5, a middle ring 6 and an outer ring 7. The inner ring 5 and the middle ring 6 are concentric rings on the same plane, while the outer ring 7 is concentric with the middle ring 6 and the inner ring 5 but arranged in a staggered manner. This design helps to form a multi-level airflow channel and improve the stratification effect of the airflow.

[0018] The guide vanes are evenly arranged along the radial direction of the grading ring 4, and the spacing between adjacent guide vanes gradually decreases from the inside to the outside. This arrangement can ensure that the airflow reduces the occurrence of turbulence and eddy current phenomena.

[0019] Specifically, the guide vane 3 includes a central guide vane 8, a primary guide vane 9, a secondary guide vane 10, and a tertiary guide vane 11. The central guide vane 8 is cross-shaped, and its edge connects the inner side of the inner ring 5; the primary guide vane 9 connects the inner ring 5 and the middle ring 6; the secondary guide vane 10 connects the middle ring 6 and the outer ring 7; and the tertiary guide vane 11 connects the outer ring 7 and the mounting plate 1. The guide vanes at each level work together to form a smooth airflow channel.

[0020] The central guide vane 8 and the first-stage guide vane 9 are designed to be straight and extended to simplify the structure and reduce the manufacturing difficulty. The second-stage guide vane 10 and the third-stage guide vane 11 are designed to be curved and extended to better connect the grading ring 4, adapt to the change of airflow direction, and reduce airflow impact and noise generation.

[0021] The mounting plate 1 is provided with mounting holes 12, which facilitate the air deflector to be firmly mounted on the fan. The position and number of the mounting holes 12 can be adjusted according to actual needs to ensure the stability and reliability of the installation.

[0022] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A guide cover for a fan, characterized in that: The invention comprises a mounting plate (1) and a guide grille (2); the guide grille (2) comprises guide vanes (3) and grading rings (4); the grading rings (4) are a plurality of circular rings which gradually expand from the inside to the outside; the guide vanes (3) connect two adjacent grading rings (4) and connect the grading ring (4) and the mounting plate (1); a plurality of guide vanes (3) are evenly arranged along the radial direction of the grading ring (4), and the spacing between adjacent guide vanes (3) gradually decreases from the inside to the outside.

2. A guide cover for a fan according to claim 1, characterized in that: The grading ring (4) comprises an inner ring (5), a middle ring (6) and an outer ring (7) arranged from the inside to the outside, the inner ring (5) and the middle ring (6) are concentric rings located on the same plane, and the outer ring (7) is concentric with the middle ring (6) and the inner ring (5) and is staggered with the two.

3. A guide cover for a fan according to claim 2, characterized in that: The guide vane (3) comprises a central guide vane (8), a primary guide vane (9), a secondary guide vane (10) and a tertiary guide vane (11); the central guide vane (8) is cross-shaped and its edge is connected to the inner side of the inner ring (5); the primary guide vane (9) connects the inner ring (5) and the middle ring (6); the secondary guide vane (10) connects the middle ring (6) and the outer ring (7); and the tertiary guide vane (11) connects the outer ring (7) and the mounting plate (1).

4. A guide cover for a fan according to claim 3, characterized in that: The central guide vane (8) and the first-stage guide vane (9) extend in a straight line, and the second-stage guide vane (10) and the third-stage guide vane (11) are guide vanes that extend in a curved manner.

5. A guide cover for a fan according to claim 4, characterized in that: The mounting plate (1) is provided with a mounting hole (12).

Images