Large-air-volume side wall type axial flow fan

Abstract

The large-air-volume side wall type axial flow fan comprises a shell, a motor and an impeller, the shell is a square shell with the two ends open and the interior hollow, a mounting frame is arranged at the position of an opening in one side of the square shell, the motor is mounted on the mounting frame, the impeller comprises a wheel shaft sleeve, a plurality of first fan blades and a plurality of second fan blades, and the first fan blades and the second fan blades are arranged on the wheel shaft sleeve. The wheel shaft sleeve is installed on an output shaft of the motor, the first fan blades are circumferentially arranged on the outer wall of the wheel shaft sleeve at equal intervals, and the second fan blades are circumferentially arranged on the outer wall of the wheel shaft sleeve at equal intervals. According to the large-air-volume side wall type axial flow fan, when the impeller is driven by the motor to rotate, the first fan blade and the second fan blade can pump air flow in the axial direction of the driving shaft, and the first fan blade and the second fan blade can discharge the air flow respectively, so that the air exhaust effect of pumping large air volume is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, and mainly relates to a side wall type axial flow fan with large air volume. Background Art

[0002] Axial flow fans, with their wide range of uses, direct airflow in the same direction as the fan's axis. Examples include electric fans and air conditioner outdoor fans. They're called "axial flow" because the air flows parallel to the fan's axis. Axial flow fans are typically used in applications requiring high flow rates but low pressure. Axial flow fans are fixed in position and move air. They primarily consist of a fan impeller and a casing. While simple in structure, they require very high performance.

[0003] Fans are needed in some industrial production, and due to the large area of ​​the factory, there are high requirements for the air output of the fan. Conventional conveying fans cannot achieve the delivery of a large air volume. Utility Model Content

[0004] The utility model aims to solve some problems existing in the prior art. For this reason, the purpose of the utility model is to propose a large air volume side wall type axial flow fan.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions:

[0006] A high-air-volume side-wall axial fan comprises a casing, a motor and an impeller. The casing is a square casing with openings at both ends and a hollow interior. A mounting frame is provided at an opening on one side of the square casing. The motor is mounted on the mounting frame. The impeller comprises a wheel shaft sleeve, a plurality of first blades and a plurality of second blades. The wheel shaft sleeve is mounted on the output shaft of the motor. The plurality of first blades are arranged at equal intervals and circumferentially on the outer wall of the wheel shaft sleeve. The plurality of second blades are arranged at equal intervals and circumferentially on the outer wall of the wheel shaft sleeve.

[0007] Preferably, the first fan blade consists of a fan blade 1 and a fan blade 2 of an integrated structure, the fan blade 1 is arranged parallel to the shell, the fan blade 2 is arranged obliquely on the fan blade 1, and the connection angle between the fan blade 1 and the fan blade 2 is 15°-20°.

[0008] Preferably, the second fan blade is a special-shaped structure, and a plurality of weight-reducing holes of different sizes and shapes are provided on the second fan blade.

[0009] Preferably, a noise reduction layer is provided on the inner wall of the shell.

[0010] Preferably, a protective net is provided at the opening on the other side of the shell.

[0011] Preferably, a plurality of through holes are provided on the outer peripheral side of the shell.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] When the impeller of the large-volume side-wall axial flow fan is driven to rotate by the motor, the first blade and the second blade can draw air in the axial direction of the drive shaft, and the first blade and the second blade can discharge the air respectively, thereby achieving the exhaust effect of drawing a large air volume.

[0014] The features and advantages of the present invention will be described in detail through the embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the utility model;

[0016] Figure 2 This is a cross-sectional view of the utility model;

[0017] Figure 3 This is the front view of the fan blade of the utility model.

[0018] Figure markings: 1. Housing, 2. Motor, 3. Impeller, 4. Mounting frame, 5. Bushing, 6. First blade, 61. Blade one, 62. Blade two, 7. Second blade, 71. Weight reduction hole, 8. Noise reduction layer, 9. Protective net, 10. Through hole. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0021] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this invention belongs. The use of "a," "an," and similar terms in this specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. "A plurality" includes two and is equivalent to at least two. "Includes" or "comprising" and similar terms mean that the elements or objects preceding "includes" or "comprising" include the elements or objects listed after "includes" or "comprising," and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar terms are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0022] Please refer to Figure 1-3 , a large air volume side wall axial flow fan, comprising a casing 1, a motor 2 and an impeller 3; the casing 1 is a square casing 1 with openings at both ends and a hollow interior, and a mounting bracket 4 is fixed to the opening on one side of the square casing 1 by fasteners or welding, and the mounting bracket 4 is a cross structure; the motor 2 is installed at the center position of the mounting bracket 4 to support the motor 2; the impeller 3 comprises a wheel shaft sleeve 5, 10 first blades 6 and 6 second blades 7, the wheel shaft sleeve 5 is installed on the output shaft of the motor 2, the 10 first blades 6 are evenly spaced and arranged circumferentially on the outer wall of the wheel shaft sleeve 5, and the 6 second blades 7 are evenly spaced and arranged circumferentially on the outer wall of the wheel shaft sleeve 5.

[0023] Based on the above embodiment: When the impeller 3 of the large air volume side wall axial flow fan is driven to rotate by the motor 2, the first blade 6 and the second blade 7 can draw air in the axial direction of the drive shaft, and the first blade 6 and the second blade 7 can discharge the air respectively, thereby achieving the exhaust effect of drawing a large air volume.

[0024] In this embodiment, the housing 1 is made of aluminum alloy, which has the advantages of low density, high strength, and good corrosion resistance.

[0025] Furthermore, the first fan blade 6 is composed of an integrated structure of fan blade 1 61 and fan blade 2 62. Fan blade 1 61 is arranged parallel to the shell 1, and fan blade 2 62 is arranged obliquely on fan blade 1 61. The connection angle between fan blade 1 61 and fan blade 2 62 is 20°.

[0026] Based on the above embodiment: by adjusting the connection angle between blade 1 61 and blade 2 62, the blade angle that can generate the maximum air volume at the same rotational speed is found, thereby increasing the overall air volume of the fan.

[0027] Furthermore, the second fan blade 7 is a special-shaped structure, and is provided with a plurality of weight-reducing holes 71 of different sizes and shapes.

[0028] Based on the above embodiment: the weight-reducing holes 71 are provided to reduce the weight of the second blade 7 and reduce material loss.

[0029] Furthermore, a noise reduction layer 8 is provided on the inner wall of the shell 1 . Specifically, the noise reduction layer 8 is made of sound-absorbing cotton, and the sound-absorbing cotton is adhered to the inner wall of the shell 1 .

[0030] Based on the above embodiment: the noise reduction layer 8 provided can reduce the propagation of noise during the operation of the fan, thereby reducing the noise that can be heard from the outside.

[0031] Furthermore, a protective net 9 is provided at the opening on the other side of the housing 1 .

[0032] Based on the above embodiment: the protective net 9 can prevent large foreign objects from entering the fan, thereby protecting the internal components of the fan from damage.

[0033] Furthermore, eight through holes 10 are formed on the outer circumference of the housing 1 , and fasteners can be installed in the through holes 10 .

[0034] Based on the above embodiment: the fan can be hung on the side wall through the provided through hole 10.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A large air volume side wall type axial flow fan, comprising a housing (1), a motor (2) and an impeller (3), wherein the housing (1) is a square housing (1) with openings at both ends and a hollow interior, a mounting frame (4) is provided at one opening of the square housing (1), and the motor (2) is mounted on the mounting frame (4), and is characterized in that: The impeller (3) comprises a wheel sleeve (5), a plurality of first blades (6) and a plurality of second blades (7); the wheel sleeve (5) is mounted on the output shaft of the motor (2); the plurality of first blades (6) are arranged at equal intervals and circumferentially on the outer wall of the wheel sleeve (5); and the plurality of second blades (7) are arranged at equal intervals and circumferentially on the outer wall of the wheel sleeve (5).

2. The large air volume side wall type axial flow fan according to claim 1, characterized in that: The first fan blade (6) is composed of a fan blade 1 (61) and a fan blade 2 (62) of an integrated structure, wherein the fan blade 1 (61) is arranged parallel to the housing (1), and the fan blade 2 (62) is arranged obliquely on the fan blade 1 (61), and the connection angle between the fan blade 1 (61) and the fan blade 2 (62) is 15°-20°.

3. The large air volume side wall type axial flow fan according to claim 1, characterized in that: The second fan blade (7) is a special-shaped structure, and is provided with a plurality of weight-reducing holes (71) of different sizes and shapes.

4. The high air volume side wall type axial flow fan according to claim 2 or 3, characterized in that: A noise reduction layer (8) is provided on the inner wall of the shell (1).

5. The large air volume side wall type axial flow fan according to claim 4, characterized in that: A protective net (9) is provided at the opening on the other side of the housing (1).

6. The high air volume side wall type axial flow fan according to claim 4, characterized in that: A plurality of through holes (10) are provided on the outer peripheral side of the shell (1).

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