Low-noise axial flow fan

Abstract

The invention discloses a low-noise axial flow fan, which comprises a mounting plate, an axial flow fan, a fan blade, a fan blade and a fan blade, and is characterized in that the axial flow fan is mounted at a specified position; the motor is connected to the mounting plate; the fan structure is connected to an output shaft of the motor; the filter cover is used for connecting the mounting plate and the motor and located on one side of the fan structure; the fan structure comprises a mounting block connected with an output shaft of the motor; the fan blades are rotationally connected to the mounting block; the turntable is arranged on the mounting block; the rotating direction of the turntable is perpendicular to that of the fan blades, and the turntable rotates to drive the fan blades to rotate; the device has a larger adjustment range and can adapt to various different occasions.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a low-noise axial flow fan. Background Art

[0002] Axial flow fans are widely used in various industrial occasions. Axial flow fans generally include a cylindrical casing, a motor, a sleeve, a hub and blades. The motor is installed in the cylindrical casing through a support, the motor shaft is connected to the hub through a sleeve, and the blades are welded at intervals on the outer periphery of the hub.

[0003] Generally, the blades of axial flow fans are fixed by welding. The airflow blown by the axial flow fan can only be adjusted by adjusting the output power of the motor. The adjustment range is limited and cannot meet the needs of some special occasions. Summary of the invention

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a low-noise axial flow fan.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a low-noise axial flow fan, comprising: a mounting plate, which mounts the axial flow fan at a specified position; a motor, which is connected to the mounting plate; a fan structure, which is connected to the output shaft of the motor; a filter cover, which is used to connect the mounting plate and the motor and is located on one side of the fan structure; the fan structure comprises: a mounting block, which is connected to the output shaft of the motor; a plurality of fan blades, which are rotatably connected to the mounting block; a turntable, which is arranged on the mounting block; the rotation direction of the turntable is perpendicular to the rotation direction of the fan blades, and the fan blades are driven to rotate when the turntable rotates.

[0007] Furthermore, the fan structure also includes: a plurality of connecting columns, which are arranged on the mounting block; a connecting seat, which is arranged on the fan blade; a first connecting shaft, which is arranged on the connecting seat; a plurality of mounting grooves are arranged on the mounting block, the connecting columns are arranged in the mounting grooves, and the connecting columns are provided with a first connecting groove corresponding to the first connecting shaft.

[0008] Furthermore, a first movable groove is provided on the first connecting shaft, a first fixed block is provided in the first movable groove, a first connecting spring is provided on the first fixed block, one end of the first connecting spring is connected to the inner wall of the first movable groove, and a first fixed groove corresponding to the first fixed block is provided on the side wall of the first connecting groove.

[0009] Furthermore, a connecting plate is provided on the connecting column, an active cavity corresponding to the connecting plate is provided on the side wall of the mounting groove, a slot is provided on the connecting plate, a second active groove is provided on the side wall of the slot, the second active groove is aligned with the first active groove, and a first push block is provided in the second active groove.

[0010] Furthermore, an air delivery cavity is provided on the side wall of the active cavity, an air delivery pipe is provided in the air delivery cavity, a second connecting groove communicating with the second active groove is provided on the connecting plate, a third active groove is provided on the side wall of the second connecting groove, the air delivery pipe is passed through the second connecting groove, a convex edge is provided at one end of the air delivery pipe, and the convex edge is located in the third active groove.

[0011] Furthermore, a fourth movable groove is provided at one end of the air delivery cavity, a second push block is provided in the fourth movable groove, a first return spring is provided on the second push block, and one end of the first return spring rests on the inner wall of the fourth movable groove.

[0012] Furthermore, a slider is provided on the second push block, a slide groove for movement of the slider is provided on the inner wall of the fourth movable groove, a limit block is provided on the second push block, a third connecting groove is provided on the limit block, and the second push block is connected to the third connecting groove by a thread.

[0013] Furthermore, the mounting block is provided with a transmission cavity which is communicated with the mounting groove, the transmission cavity is provided with a transmission ring which cooperates with the connecting column for transmission, the transmission ring is provided with a connecting rod, the connecting rod is provided with a second connecting shaft, one end of the second connecting shaft passes through the mounting block, and a turntable is provided at one end of the second connecting shaft.

[0014] Furthermore, a fourth connecting groove is provided on the mounting block, the output shaft of the motor is inserted into the fourth connecting groove, a fifth movable groove is provided on the inner wall of the fourth connecting groove, a second fixed block is provided in the fifth movable groove, a second connecting spring is provided on the second fixed block, and a second fixed groove corresponding to the second fixed block is provided on the output shaft of the motor.

[0015] Furthermore, a cavity is provided on the mounting block, the cavity is located on one side of the fifth movable groove, a rotating rod is provided in the cavity, the middle part of the rotating rod is rotatably connected to the inner wall of the cavity, a connecting rope is provided at one end of the rotating rod, and one end of the connecting rope is fixedly connected to the second fixed block; a sixth movable groove is provided on the mounting block, a third push block is provided in the sixth movable groove, a push rod is provided on the third push block, and the push rod is passed through the cavity; a protrusion is provided on the third push block.

[0016] The invention is beneficial in that it provides a low-noise axial flow fan with a larger adjustment range and capable of adapting to a variety of different occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0018] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0019] In the attached picture:

[0020] Figure 1 The figure is a schematic diagram of the structure of a low-noise axial flow fan in one embodiment of the present invention.

[0021] Figure 2 for Figure 1 A cross-sectional view of a mounting block for a low noise axial flow fan in the illustrated embodiment.

[0022] Figure 3 for Figure 2 Enlarged view of point A in .

[0023] Figure 4 for Figure 2 Enlarged view of point B in .

[0024] Figure 5 for Figure 1 A cross-sectional view of a transmission ring of a low-noise axial flow fan in the illustrated embodiment.

[0025] Figure 6 for Figure 5 Enlarged view of point C in the figure.

[0026] Figure 7 for Figure 1 A cross-sectional view of a connection plate of a low-noise axial flow fan in the illustrated embodiment.

[0027] Figure 8 for Figure 7 Enlarged view of point D in .

[0028] The meanings of the reference numerals in the figures are as follows:

[0029] 101, mounting plate; 102, motor; 103, filter cover; 104, mounting block; 105, fan blade; 1051, connecting seat; 1052, first connecting shaft; 106, turntable; 107, connecting column; 1071, connecting plate; 108, first fixed block; 109, first connecting spring; 110, transmission ring; 1101, connecting rod; 111, first push block; 112, guide rod; 113, third return spring; 114, air pipe; 1141, end plate; 115, second push block; 1151, slider; 116, limit block; 117, first return spring; 118, turntable; 119, third push block; 1191, push rod; 1192, bump; 1193, second return spring; 120, second fixed block; 121, second connecting spring; 122, connecting rope. DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0031] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0032] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0034] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] like Figure 1-8 As shown, a low-noise axial flow fan includes a mounting plate 101, a motor 102, a fan structure and a filter cover 103. The mounting plate 101 mounts the axial flow fan at a specified position; the motor 102 is connected to the mounting plate 101; the fan structure is connected to the output shaft of the motor 102; the filter cover 103 is used to connect the mounting plate 101 and the motor 102 and is located on one side of the fan structure. The filter cover 103 performs preliminary filtering on the airflow to reduce dust adhering to the fan structure.

[0037] The fan structure includes a mounting block 104, a plurality of fan blades 105 and a turntable 106; the mounting block 104 is connected to the output shaft of the motor 102; the fan blades 105 are rotatably connected to the mounting block 104; the turntable 106 is disposed on the mounting block 104; the rotation direction of the turntable 106 is perpendicular to the rotation direction of the fan blades 105, and when the turntable 106 rotates, the fan blades 105 are driven to rotate.

[0038] The fan structure also includes a plurality of connecting columns 107, a connecting seat 1051 and a first connecting shaft 1052. The connecting columns 107 are arranged on the mounting block 104, and the number of the connecting columns 107 corresponds to the number of the fan blades 105; the connecting seat 1051 is arranged on the fan blades 105; the first connecting shaft 1052 is arranged on the connecting seat 1051; a plurality of mounting grooves are arranged on the mounting block 104, the connecting columns 107 are arranged in the mounting grooves, the connecting columns 107 are provided with a first connecting groove corresponding to the first connecting shaft 1052, and the first connecting shaft 1052 is inserted in the first connecting groove.

[0039] A first movable groove is provided on the first connecting shaft 1052, a first fixed block 108 is provided in the first movable groove, a first connecting spring 109 is provided on the first fixed block 108, one end of the first connecting spring 109 is connected to the inner wall of the first movable groove, a first fixed groove corresponding to the first fixed block 108 is provided on the side wall of the first connecting groove, a first oblique groove is provided on the first fixed block 108, and the first oblique groove is located on the bottom surface of the first fixed block 108.

[0040] A connecting plate 1071 is provided on the connecting column 107, and an active cavity corresponding to the connecting plate 1071 is provided on the side wall of the mounting groove. A slot is provided on the connecting plate 1071, and a second active groove is provided on the side wall of the slot. The second active groove is aligned with the first active groove. A first push block 111 is provided in the second active groove, and a guide rod 112 is provided in the second active groove. A through groove is provided on the first push block 111, and the guide rod 112 is penetrated in the through groove. A third reset spring 113 is provided on the guide rod 112, and one end of the third reset spring 113 is against the inner wall of the through groove.

[0041] An air delivery cavity is provided on the side wall of the movable cavity, and an air delivery pipe 114 is provided in the air delivery cavity. A second connecting groove communicating with the second movable groove is provided on the connecting plate 1071, and a third movable groove is provided on the side wall of the second connecting groove. The air delivery pipe 114 is passed through the second connecting groove, and a convex edge is provided at one end of the air delivery pipe 114, which is in the third movable groove. The convex edge can move along the inner wall of the third movable groove but prevents the air delivery pipe 114 from escaping from the second connecting groove, and the part of the second connecting groove that is staggered from the air delivery cavity abuts against the inner wall of the movable cavity to seal it.

[0042] A fourth movable groove is provided at one end of the air delivery cavity, a second push block 115 is provided in the fourth movable groove, a first return spring 117 is provided on the second push block 115, and one end of the first return spring 117 is against the inner wall of the fourth movable groove.

[0043] The second push block 115 is provided with a slider 1151, and the inner wall of the fourth movable groove is provided with a slide groove for the slider 1151 to move. The second push block 115 is provided with a limit block 116, and the limit block 116 is provided with a third connecting groove. The second push block 115 is connected to the third connecting groove by a thread, and the cooperation between the slider 1151 and the slide groove prevents the second push block 115 from rotating in the fourth movable groove, thereby avoiding the rotation of the second push block 115 when the limit block 116 is rotated; after the limit block 116 is connected to the second push block 115, the second push block 115 cannot move directly into the fourth movable groove, thereby ensuring the stability of the connection of the fan blade 105 and avoiding misoperation.

[0044] The mounting block 104 is provided with a transmission cavity communicated with the mounting groove, and a transmission ring 110 is provided in the transmission cavity and cooperates with the connecting column 107 for transmission, and a connecting rod 1101 is provided on the transmission ring 110, and a second connecting shaft is provided on the connecting rod 1101, and one end of the second connecting shaft passes through the mounting block 104, and a turntable 106 is provided at one end of the second connecting shaft; an indicator mark is provided on the turntable 106, and a gear table is provided on the mounting block 104, so that the user can adjust to the desired gear conveniently.

[0045] The angle of the fan blade 105 is adjusted by rotating the turntable 106, so that the fan can have more gears of wind power selection to meet the needs of various different application scenarios of the fan; when one of the fan blades 105 is damaged, the limit block 116 on the second push block 115 corresponding to the fan blade 105 is removed, and the second push block 115 is pushed into the fourth movable groove. The second push block 115 pushes the airflow in the fourth movable groove into the air delivery cavity, and the airflow enters the second movable groove through the air delivery cavity. The first push block 111 enters the first fixed groove to push out the first fixed block 108, so that the damaged fan blade 105 can be directly removed and replaced; through the cooperation of the connecting disk 1071 and the air delivery pipe 114, the second push block 115 can be used to complete the disassembly of the fan blade 105 regardless of the angle to which the fan blade 105 is rotated, making the maintenance of the fan blade 105 more convenient.

[0046] A fourth connecting groove is provided on the mounting block 104, the output shaft of the motor 102 is inserted into the fourth connecting groove, a fifth movable groove is provided on the inner wall of the fourth connecting groove, a second fixed block 120 is provided in the fifth movable groove, a second connecting spring 121 is provided on the second fixed block 120, a second fixed groove corresponding to the second fixed block 120 is provided on the output shaft of the motor 102, and a second inclined surface is provided on the side of the second fixed block 120 close to the motor 102.

[0047] A cavity is provided on the mounting block 104, and the cavity is located on one side of the fifth movable groove. A rotating rod 118 is provided in the cavity, and the middle part of the rotating rod 118 is rotatably connected to the inner wall of the cavity. A connecting rope 122 is provided at one end of the rotating rod 118, and one end of the connecting rope 122 is fixedly connected to the second fixed block 120; a sixth movable groove is provided on the mounting block 104, and a third push block 119 is provided in the sixth movable groove. A push rod 1191 is provided on the third push block 119, and the push rod 1191 is passed through the cavity; a protrusion 1192 and a second return spring 1193 are provided on the third push block 119, and the second return spring 1193 rests on the inner wall of the sixth movable groove.

[0048] When the mounting block 104 needs to be removed, the third push block 119 is pushed to move, and the third push block 119 drives the push rod 1191 to move, and the push rod 1191 pushes one end of the rotating rod 118 to move, and the rotating rod 118 rotates to pull the connecting rope 122 to move, and the connecting rope 122 pulls the second fixed block 120 into the fifth movable groove, and the second fixed block 120 is disengaged from the second fixed groove, so as to directly remove the mounting block 104 from the output shaft of the motor 102.

[0049] In order to improve the quietness of the fan and ensure the stability of the fan operation, multiple rubber rings are provided on the first connecting shaft 1052 and the output shaft of the motor 102. The rubber rings fill the gaps between the first connecting shaft 1052 and the first connecting groove and between the output shaft of the motor 102 and the fourth connecting groove, thereby increasing the connection effect between the fan blades 105 and the mounting block 104 and preventing the first connecting shaft 1052 from colliding with the inner wall of the first connecting groove or the output shaft of the motor 102 from colliding with the inner wall of the fourth connecting groove when the fan is working, thereby generating noise.

[0050] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A low-noise axial flow fan, comprising: A mounting plate for mounting the axial flow fan at a designated position; A motor connected to the mounting plate; A fan structure connected to the output shaft of the motor; A filter cover, used to connect the mounting plate and the motor and located on one side of the fan structure; Features: The fan structure comprises: A mounting block connected to the output shaft of the motor; A plurality of fan blades rotatably connected to the mounting block; A turntable, arranged on the mounting block; The rotation direction of the turntable is perpendicular to the rotation direction of the fan blades, and the fan blades are driven to rotate when the turntable rotates.

2. The low noise axial flow fan according to claim 1, characterized in that: The fan structure also includes: A plurality of connecting columns are arranged on the mounting block; A connecting seat, arranged on the fan blade; A first connecting shaft, disposed on the connecting seat; The mounting block is provided with a plurality of mounting grooves, the connecting column is arranged in the mounting grooves, and the connecting column is provided with a first connecting groove corresponding to the first connecting shaft.

3. The low noise axial flow fan according to claim 2, characterized in that: A first movable groove is provided on the first connecting shaft, a first fixed block is provided in the first movable groove, a first connecting spring is provided on the first fixed block, one end of the first connecting spring is connected to the inner wall of the first movable groove, and a first fixed groove corresponding to the first fixed block is provided on the side wall of the first connecting groove.

4. The low noise axial flow fan according to claim 3, characterized in that: The connecting column is provided with a connecting plate, the side wall of the mounting groove is provided with an active cavity corresponding to the connecting plate, the connecting plate is provided with a slot, the side wall of the slot is provided with a second active slot, the second active slot is aligned with the first active slot, and a first push block is provided in the second active slot.

5. The low noise axial flow fan according to claim 4, characterized in that: An air delivery cavity is provided on the side wall of the movable cavity, an air delivery pipe is provided in the air delivery cavity, a second connecting groove communicating with the second movable groove is provided on the connecting plate, a third movable groove is provided on the side wall of the second connecting groove, the air delivery pipe is passed through the second connecting groove, a convex edge is provided at one end of the air delivery pipe, and the convex edge is located in the third movable groove.

6. The low noise axial flow fan according to claim 5, characterized in that: A fourth movable groove is provided at one end of the air delivery cavity, a second push block is provided in the fourth movable groove, a first return spring is provided on the second push block, and one end of the first return spring abuts against the inner wall of the fourth movable groove.

7. The low noise axial flow fan according to claim 6, characterized in that: The second push block is provided with a slider, the inner wall of the fourth movable groove is provided with a slide groove for the slider to move, the second push block is provided with a limit block, the limit block is provided with a third connecting groove, and the second push block is connected to the third connecting groove by a thread.

8. The low noise axial flow fan according to claim 2, characterized in that: The mounting block is provided with a transmission cavity communicated with the mounting groove, the transmission cavity is provided with a transmission ring that cooperates with the connecting column for transmission, the transmission ring is provided with a connecting rod, the connecting rod is provided with a second connecting shaft, one end of the second connecting shaft passes through the mounting block, and the turntable is provided at one end of the second connecting shaft.

9. The low noise axial flow fan according to claim 1, characterized in that: The mounting block is provided with a fourth connecting groove, the output shaft of the motor is inserted into the fourth connecting groove, the inner wall of the fourth connecting groove is provided with a fifth movable groove, a second fixed block is provided in the fifth movable groove, the second fixed block is provided with a second connecting spring, and the output shaft of the motor is provided with a second fixed groove corresponding to the second fixed block.

10. The low-noise axial flow fan according to claim 9, characterized in that: A cavity is provided on the mounting block, and the cavity is located on one side of the fifth movable groove. A rotating rod is provided in the cavity, and the middle part of the rotating rod is rotatably connected to the inner wall of the cavity. A connecting rope is provided at one end of the rotating rod, and one end of the connecting rope is fixedly connected to the second fixed block; a sixth movable groove is provided on the mounting block, and a third push block is provided in the sixth movable groove. A push rod is provided on the third push block, and the push rod is passed through the cavity; a protrusion is provided on the third push block.

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