Flow guide system component of micro fan

Abstract

The utility model discloses a diversion system component of a miniature fan. Comprising a cylinder and an impeller located at a port of the cylinder and connected with a rotor, a flow guide plate is arranged in the cylinder, blades are arranged on the periphery of the impeller in an annular array mode, the thickness of each blade is gradually increased from the two ends to the middle, an arched part is formed in the middle of each blade, and the top end of each blade gradually inclines forwards from inside to outside. And the bottom ends of the blades are gradually inclined backwards from inside to outside. The thicknesses of the two ends of the blade are designed, the middle of the blade is thick, the two ends of the blade are thin, an arched part is formed in the middle of the blade, and therefore the position where vortex cyclones are easily formed is raised, meanwhile, the two ends of the blade incline forwards and backwards step by step, the blade is in an S shape, and air flow guide can be better formed. Therefore, the probability of vortex generation can be reduced, and the effect of noise reduction is achieved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a flow guiding system component for a micro wind turbine. Background Technology

[0002] As we all know, a fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas. It is a type of driven fluid machinery, as well as a gas compression and gas conveying machinery. It converts rotational mechanical energy into gas pressure energy and kinetic energy, and then transports the gas out. Fans are widely used in various places and in household appliances such as vacuum cleaners and hair dryers.

[0003] Currently, when fans are used in household appliances, they are often made small or miniature. However, to meet efficiency requirements, they need to be configured as high-speed fans, meaning they need to rotate at higher speeds. A fan's airflow system consists of a casing, inlet and outlet ports, internal guide vanes, and an impeller connected to the rotor. The fan's blowing or airflow effect depends on the quality of this airflow system. The quality of the airflow system largely depends on the impeller. Existing impellers have blades that are consistently angled in only one direction (e.g.,...). Figure 1 As shown), under high-speed rotation, due to the inclined surface of the blades, when the rotational speed reaches a certain level or the drag becomes large enough, a vortex cyclone will form on the leeward side of the blades (such as...). Figure 2 As shown in the figure, it generates a lot of noise, and the vortex cyclone will affect the airflow into the next blade and reduce the air volume. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a flow guiding system component for a micro fan.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flow guiding system component for a micro fan includes a cylinder and an impeller located at the port of the cylinder and connected to a rotor. A flow guide plate is provided inside the cylinder, and blades are arranged in a ring array around the impeller. The thickness of the blades gradually increases from both ends to the middle, forming an arched part in the middle of the blades. The tips of the blades gradually tilt forward from the inside to the outside, and the bottom of the blades gradually tilt backward from the inside to the outside.

[0007] Preferably, the impeller is conical.

[0008] Preferably, the number of blades is odd.

[0009] Preferably, the guide plate is arc-shaped.

[0010] By adopting the above-mentioned solution, this utility model designs the thickness of both ends of the blade to be thicker in the middle and thinner at both ends, forming an arched part in the middle of the blade, thereby raising the area where vortex cyclones are easily formed. At the same time, by gradually tilting the two ends of the blade forward and backward, the blade presents an "S" shape, which can better guide the airflow, thereby reducing the probability of vortex generation and achieving the effect of noise reduction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an existing impeller in the background art.

[0012] Figure 2 This is a schematic diagram illustrating the principle of vortex generation in the background technology.

[0013] Figure 3 This is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 4 This is an exploded view of the structure of an embodiment of this utility model.

[0015] Figure 5 This is a schematic diagram of the impeller structure according to an embodiment of the present invention.

[0016] Figure 6 This is a schematic diagram of the airflow trend at the impeller in an embodiment of this utility model.

[0017] Figure 7 This is a schematic diagram of the software bottom routing in an embodiment of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] like Figures 3 to 7 As shown, this embodiment provides a flow guiding system component for a micro fan, including a cylinder 1 and an impeller 2 located at the port of the cylinder 1 and connected to a rotor 100. A flow guide plate 11 is provided inside the cylinder. Blades 21 are arranged in a ring array around the impeller 2. The number of blades 21 is odd. The thickness of the blades 21 gradually increases from both ends to the middle, forming an arched part in the middle of the blades 21. The thickness of the arched part 22 is 1.5-2 times the thickness of the edge of the blade 21. The top of the blades 21 gradually tilts forward from the inside to the outside, and the bottom of the blades 21 gradually tilts backward from the inside to the outside.

[0022] In this embodiment, the thickness of the blade 21 at both ends is designed to be thicker in the middle and thinner at both ends, forming an arched part 22 in the middle of the blade 21, thereby raising the area where vortex cyclones are easily formed. At the same time, by gradually tilting the blade 21 forward and backward at both ends, the blade 21 is made to present an "S" shape, which can better guide the airflow, thereby reducing the probability of vortex generation and achieving the effect of noise reduction.

[0023] To better illustrate the principle of noise reduction, we will specifically use a suction method, that is, when applied to a vacuum cleaner, such as... Figure 6 As shown, after the impeller 2 rotates, the airflow enters from the top of the impeller 2, is first guided by the inclined surface at the top of the blade 21, and then after passing through the arched part 22, it will form a change of direction, so that the airflow is reoriented in places where vortices are easily generated, thereby reducing the generation of vortices. Finally, combined with the top of the blade 21 gradually tilting forward from the inside to the outside and the bottom of the blade 21 gradually tilting backward from the inside to the outside, the blade 21 itself is an "S" shape, thereby guiding the airflow more smoothly.

[0024] Meanwhile, to verify feasibility, software was used to test the airflow pattern of the product. The test results are attached. Figure 7 As shown, it can be seen that when entering the space between blades 21, the airflow becomes more orderly with very few random lines, which proves that the probability of vortex formation is effectively reduced.

[0025] Furthermore, in order to better fit the airflow, the impeller 2 in this embodiment is conical, which is similar to a bullet head design, reducing wind resistance and thus meeting the design requirements of high-speed rotation.

[0026] Furthermore, the guide vane 11 in this embodiment is arc-shaped, and the arc-shaped design of the guide vane 11 can be used to increase wind pressure.

[0027] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A flow guiding system component for a micro fan, characterized in that: It includes a cylinder and an impeller located at the port of the cylinder and connected to the rotor. A guide plate is provided inside the cylinder. Blades are arranged in a ring array around the periphery of the impeller. The thickness of the blades gradually increases from both ends to the middle, forming an arched part in the middle of the blades. The top of the blades gradually tilts forward from the inside to the outside, and the bottom of the blades gradually tilts backward from the inside to the outside.

2. The flow guiding system component of a micro fan as described in claim 1, characterized in that: The impeller is conical in shape.

3. The flow guiding system component of a micro fan as described in claim 2, characterized in that: The number of blades is odd.

4. The flow guiding system component of a micro fan as described in claim 3, characterized in that: The guide plate is arc-shaped.

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