A fan housing capable of increasing wind pressure and reducing sound pressure

Abstract

This utility model discloses a fan housing that can increase air pressure and reduce sound pressure. It comprises a lower cover, an upper cover, and a frame disposed between the two. Multiple air outlets are provided on the end face of the lower cover, and a bearing chamber is located in the center of the back of the lower cover. A first through hole and a second through hole are provided on one side of the lower end of the lower cover. The beneficial effects of this utility model are: by providing at least two through holes on one side of the lower cover, and by arranging the through holes in a trapezoidal shape, the airflow output is greatly increased, and noise pollution is also correspondingly reduced through the design of the through holes.

Description

Technical Field

[0001] This utility model relates to the field of fan airflow technology, specifically a fan housing that can increase air pressure and reduce sound pressure. Background Technology

[0002] With the continuous development of science, fans have become common in every household due to their low price and good performance.

[0003] A fan generally includes a housing, a motor, fan blades, and a fan blade bracket for mounting the fan blades. The fan blade bracket is generally radial. The housing includes an annular shell with several threaded holes on its side wall for fixing the fan blade bracket. In use, existing fans generate significant noise when the blades rotate rapidly. Moreover, due to the fixed design of the air outlet, the airflow is relatively small, and the noise is also relatively high. During long-term operation, noise pollution is generated, and the airflow does not meet the requirements. Utility Model Content

[0004] The purpose of this invention is to provide a fan housing that can increase wind pressure and reduce sound pressure, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fan housing that can increase wind pressure and reduce sound pressure, comprising a lower cover, an upper cover and a frame disposed between the two, wherein the lower cover has multiple air outlet holes on its end face, a bearing chamber is provided in the middle of the back of the lower cover, and a first through hole and a second through hole are provided on one side of the lower end of the lower cover.

[0006] In a further optimized configuration, the lower cover is fixedly connected to a plurality of snap fasteners that are equidistant and symmetrically arranged around the perimeter of the frame.

[0007] In a further optimized configuration, the top cover is fixedly connected to the frame around its perimeter by a first screw, a second screw, a third screw, and a fourth screw.

[0008] In a further optimization, the top of the frame is symmetrically provided with a first lifting lug and a second lifting lug.

[0009] In a further optimized design, both the first through hole and the second through hole are trapezoidal structures formed on the end face of the lower cover.

[0010] Furthermore, a reinforcing rib is provided on one side of the frame.

[0011] In a further optimized configuration, the number of air outlets is three, and they are symmetrically arranged on the end face of the lower cover. Beneficial effects

[0012] The fan housing provided by this utility model, which can increase wind pressure and reduce sound pressure, has at least two through holes on one side of the top cover, and the through holes are arranged in a trapezoidal shape, which greatly increases the output of air volume, and the noise pollution is also reduced accordingly through the arrangement of the through holes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is another schematic diagram of the overall structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the first air volume curve of this utility model;

[0016] Figure 4 This is a schematic diagram of the second air volume curve of this utility model;

[0017] Figure 5 This is a schematic diagram of the third air volume curve of this utility model. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0019] like Figure 1-2 As shown, a fan housing that can increase wind pressure and reduce sound pressure includes a lower cover 1, an upper cover 3 and a frame 2 disposed between the two. The lower cover 1 has multiple air outlet holes 14 on its end face, a bearing chamber 15 in the middle of the back of the lower cover 1, and a first through hole 12 and a second through hole 13 on one side of the lower end of the lower cover 1.

[0020] In this embodiment, the lower cover 1 and the frame 2 are fixedly connected by a plurality of buckles 11 arranged equidistantly and symmetrically around the perimeter. The lower cover 1 and the frame 2 are fixedly connected by the structure of the plurality of buckles 11.

[0021] The upper cover 3 is fixedly connected to the frame 2 around its perimeter by the first screw 6, the second screw 7, the third screw 8 and the fourth screw 9. The screw connection method makes the connection between the lower cover and the frame more secure. Because the vibration generated by the rotation of the fan blade is relatively large, multiple screws are used to fix it.

[0022] The top of the frame 2 is symmetrically provided with a first hanging lug 4 and a second hanging lug 5. The function of the hanging lug is to suspend the fan to any desired position.

[0023] Both the first through hole 12 and the second through hole 13 are trapezoidal structures opened on the end face of the lower cover 1, which increases the air volume output, and the noise pollution is also reduced accordingly through the setting of the through holes.

[0024] A reinforcing rib 10 is also provided on one side of the frame 2 to ensure the stability of the lower cover connection.

[0025] There are three air outlets 14, which are symmetrically opened on the end face of the lower cover 1 and are arranged radially.

[0026] At least two through holes are made on one side of the lower cover, and the through holes are arranged in a trapezoidal shape, which greatly increases the air volume output. In addition, the noise pollution is also reduced accordingly through the arrangement of the through holes.

[0027] The following table is a verification table for noise reduction:

[0028]

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fan housing that can increase wind pressure and reduce sound pressure, characterized in that: It consists of a lower cover (1), an upper cover (3) and a frame (2) disposed between the two. The lower cover (1) has multiple air outlet holes (14) on its end face. The lower cover (1) has a bearing chamber (15) in the middle of its back side. The lower cover (1) has a first through hole (12) and a second through hole (13) on one side of its lower end.

2. The fan housing that can increase wind pressure and reduce sound pressure according to claim 1, characterized in that: The lower cover (1) is fixedly connected to a plurality of buckles (11) that are equidistant and symmetrically arranged around the frame (2).

3. The fan housing that can increase wind pressure and reduce sound pressure according to claim 1, characterized in that: The top cover (3) is fixedly connected to the frame (2) around its perimeter by a first screw (6), a second screw (7), a third screw (8) and a fourth screw (9).

4. The fan housing that can increase wind pressure and reduce sound pressure according to claim 1, characterized in that: The top of the frame (2) is symmetrically provided with a first hanging lug (4) and a second hanging lug (5).

5. The fan housing that can increase wind pressure and reduce sound pressure according to claim 1, characterized in that: Both the first through hole (12) and the second through hole (13) are trapezoidal structures opened on the end face of the lower cover (1).

6. The fan housing that can increase wind pressure and reduce sound pressure according to claim 1, characterized in that: The frame (2) is also provided with a reinforcing rib (10) on one side.

7. The fan housing that can increase wind pressure and reduce sound pressure according to claim 1, characterized in that: The multiple air outlets (14) are three in number and are symmetrically opened on the end face of the lower cover (1).

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