Low-loss axial flow fan

Abstract

The utility model discloses a low-loss axial flow fan, and belongs to the field of fans. The utility model discloses a low-loss axial flow fan which comprises an air cylinder. A support is fixedly connected into the air duct, a driving motor is fixedly connected to the support, and a plurality of fan blades are fixedly connected to an output rotating shaft of the driving motor at equal intervals. The protective net cover is fixedly connected to one end of the air duct; the two annular grooves are formed in the inner wall of the air duct. The two groups of flow guide pieces are respectively arranged in the annular grooves and are used for increasing the air velocity in the air duct; the mounting plate is mounted on one flow guide piece; the cleaning roller is rotationally connected to the mounting plate; the limiting ring is slidably connected into the annular groove. The multiple balls are rotationally connected to the limiting ring. The low-loss axial flow fan has the beneficial effects that the protective net cover of the fan can be automatically cleaned while the fan runs and under the condition that extra electric energy is not consumed.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to a low-loss axial flow fan. Background Art

[0002] Axial flow fans are widely used. They are fans that move air in the same direction as the shaft of the fan blades. For example, electric fans and air conditioner outdoor fans are fans that run in an axial flow mode. They are called "axial flow" because the air flows parallel to the fan shaft. Axial flow fans are usually used in situations where the flow rate requirements are high and the pressure requirements are low. Axial flow fans are fixed in position and move air and are usually fixed at a high place. Manual cleaning of the fan is required regularly.

[0003] A low-loss axial flow fan is now provided which can automatically clean the fan itself while the fan itself is running. Utility Model Content

[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 solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a low-loss axial flow fan, including: a wind tube;

[0006] The invention is characterized in that: a bracket is fixedly connected inside the air duct, a driving motor is fixedly connected to the bracket, and a plurality of fan blades are fixedly connected to the output shaft of the driving motor at equal intervals;

[0007] Low-loss axial fans also include:

[0008] A protective mesh cover is fixedly connected to one end of the air duct;

[0009] Two annular grooves are provided and are respectively arranged on the inner wall of the air duct;

[0010] The guide pieces are provided in two groups and are respectively arranged in the annular grooves to increase the air flow rate in the air duct;

[0011] a mounting plate mounted on one of the guide members;

[0012] A cleaning roller, rotatably connected to the mounting plate;

[0013] The guide parts include:

[0014] A limiting ring, slidably connected in the ring groove;

[0015] A plurality of balls are provided and are rotatably connected to the limiting rings respectively;

[0016] A guide ring, fixedly connected to the inner wall of the limiting ring;

[0017] A plurality of guide plates are provided and are respectively fixedly connected to the inner wall of the guide ring;

[0018] A connecting ring, fixedly connected to one end of the guide plate;

[0019] A plurality of guide blocks are provided and fixedly connected to the inner wall of the guide ring at equal intervals;

[0020] The guide groove is arranged on the guide block.

[0021] Furthermore, the bracket is welded to the inner wall of the wind tube between the two guide rings.

[0022] Furthermore, the guide groove is a wedge-shaped structure.

[0023] Furthermore, the guide plate is an inclined curved blade.

[0024] Furthermore, the balls are in rolling contact with the side walls of the annular groove respectively.

[0025] Further, the connecting ring is located in the inner wall of the guide ring and the outer wall of the connecting ring is fixedly connected to one end of the plurality of guide plates respectively.

[0026] Furthermore, two mounting plates are provided and the mounting plates are respectively fixedly connected to the end walls of the guide ring and the connecting ring, and the two ends of the cleaning roller are respectively rotatably connected to the mounting plates on both sides.

[0027] Further, the outer wall of the cleaning roller is in rotational contact with the protective mesh cover.

[0028] Furthermore, the outer diameter of the guide ring is smaller than the inner wall diameter of the wind cylinder.

[0029] Furthermore, a plurality of insertion holes are provided at equal intervals on the side walls at both ends of the wind tube, and the protective mesh cover is fixedly connected to the wind tube by bolts and nuts.

[0030] The beneficial effect of the present application is that it provides a low-loss axial flow fan, which can automatically clean the protective mesh cover of the fan while the fan itself is running and without consuming additional electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] 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.

[0033] In the attached picture:

[0034] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0035] Figure 2 It is a schematic cross-sectional view of a part of the embodiment, mainly showing the cleaning roller structure;

[0036] Figure 3 It is a structural schematic diagram of a part of the embodiment, mainly showing the guide ring structure;

[0037] Figure 4 yes Figure 2 Enlarged view of part A.

[0038] Reference numerals:

[0039] 11. Air duct; 12. Protective mesh cover; 13. Driving motor; 14. Fan blades; 15. Guide ring; 16. Limit ring; 17. Bracket; 18. Ball bearing; 19. Ring groove; 20. Connecting ring; 21. Guide plate; 22. Guide block; 23. Guide groove; 24. Mounting plate; 25. Cleaning roller. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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".

[0044] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0045] Reference Figure 1-Figure 4 The low-loss axial flow fan includes: a wind tube 11, a bracket 17, a driving motor 13, a fan blade 14, a protective mesh cover 12, a mounting plate 24, and a cleaning roller 25.

[0046] A bracket 17 is fixedly connected inside the wind tube 11, a driving motor 13 is fixedly connected to the bracket 17, and a plurality of fan blades 14 are fixedly connected to the output shaft of the driving motor 13 at equal intervals. Multiple insertion holes are evenly spaced on the side walls of both ends of the wind tube 11, and the protective net cover 12 is fixedly connected to the wind tube 11 by bolts and nuts. Two annular grooves 19 are provided on the inner wall of the wind tube 11;

[0047] In order to increase the air flow rate in the air duct 11, two groups of guide members are also provided, and the guide members include: a limit ring 16, a ball 18, a guide ring 15, a guide plate 21, a connecting ring 20, and a guide block 22. The limit ring 16 is slidably connected in the annular groove 19, and a plurality of ball grooves are evenly spaced on the two end walls and the outer diameter side wall of the limit ring 16, and a ball 18 is rotatably connected in each ball groove, and the ball 18 is in rolling contact with the side wall of the annular groove 19 respectively. The guide ring 15 is fixedly connected to the inner wall of the limit ring 16, and the outer diameter of the guide ring 15 is smaller than the inner wall diameter of the air duct 11, that is, the outer wall of the guide ring 15 does not contact the inner wall of the air duct 11. The guide plate 21 is an inclined curved blade, and the guide plate 21 is provided with a plurality of guide plates, and one end of the guide plate 21 is fixedly connected to the inner wall of the guide ring 15. The connecting ring 20 is located in the inner wall of the guide ring 15 and the outer wall of the connecting ring 20 is respectively fixedly connected to the other ends of the plurality of guide plates 21. A plurality of guide blocks 22 are provided and fixedly connected to the inner wall of the guide ring 15 at equal intervals, and each guide block 22 is provided with a guide groove 23, which is a wedge-shaped structure.

[0048] The bracket 17 is welded to the inner wall of the wind tube 11 between the two guide rings 15. Two mounting plates 24 are provided and are fixedly connected to the end walls of the guide ring 15 and the connecting ring 20, respectively. The two ends of the cleaning roller 25 are rotatably connected to the mounting plates 24 on both sides, and the outer wall of the cleaning roller 25 is in rotational contact with the protective mesh cover 12.

[0049] Among them, the motor bearing in the driving motor 13 adopts a ball-type lubrication-free type, and the motor power reserve coefficient should be 110% to improve the safety and energy saving of the fan. The fan blade 14 is designed according to the principle of aerodynamics and multi-objective optimization. Each fan blade 14 is statically and dynamically balanced. The balance of the fan blade 14 reaches the international standard G2.5 balance level. Thereby achieving the low loss and energy saving effect of the fan.

[0050] Working or installation process:

[0051] When the drive motor 13 is powered on, the drive motor 13 starts, and the output shaft of the drive motor 13 drives the fan blades 14 to rotate. The fan blades 14 rotate and drive the air flow in the wind tube 11 to move. The air passes through the protective mesh cover 12 and enters the wind tube 11, and flows out from the wind duct of the wind tube 11 at one end away from the protective mesh cover 12.

[0052] When the fan blade 14 rotates, the airflow in the wind tube 11 blows the guide plate 21 and the guide block 22, and because the guide groove 23 is a wedge-shaped structure, the airflow entering the wind tube 11 drives the guide plate 21 and the guide block 22 to rotate around the axis of the guide ring 15, and the guide plate 21 and the guide block 22 drive the guide ring 15 and the limit ring 16 to rotate around the axis of the guide ring 15. When the guide ring 15 rotates, the guide ring 15 drives the mounting plate 24 to rotate synchronously, and the mounting plate 24 drives the cleaning roller 25 to rotate around the axis of the guide ring 15. The cleaning roller 25 rotates around the axis of the guide ring 15 and rotates around its own axis, so that the cleaning roller 25 rolls and contacts with the protective mesh cover 12, and the cleaning roller 25 rotates while brushing off the dust remaining on the protective mesh cover 12; no other power source is needed, and the wind drives the cleaning roller 25 to rotate and clean the protective mesh cover 12 at the same time, thereby reducing the energy consumed when cleaning the fan.

[0053] 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-loss axial flow fan, comprising: Hair dryer (11); The invention is characterized in that: a bracket (17) is fixedly connected inside the wind tube (11), a driving motor (13) is fixedly connected to the bracket (17), and a plurality of fan blades (14) are fixedly connected to the output shaft of the driving motor (13) at equal intervals; The low-loss axial flow fan also includes: A protective mesh cover (12) is fixedly connected to one end of the wind tube (11); Two annular grooves (19) are provided and are respectively arranged on the inner wall of the wind tube (11); Two groups of flow guides are provided and are respectively arranged in the annular groove (19) and are used to increase the air flow rate in the wind tube (11); A mounting plate (24) mounted on one of the guide members; A cleaning roller (25) rotatably connected to the mounting plate (24); The flow guide comprises: A limiting ring (16) is slidably connected in the annular groove (19); A plurality of balls (18) are provided and are rotatably connected to the limiting ring (16); A guide ring (15) fixedly connected to the inner wall of the limiting ring (16); A plurality of guide plates (21) are provided and are respectively fixedly connected to the inner wall of the guide ring (15); A connecting ring (20) fixedly connected to one end of the guide plate (21); A plurality of guide blocks (22) are provided and fixedly connected to the inner wall of the guide ring (15) at equal intervals; The guide groove (23) is arranged on the guide block (22).

2. The low-loss axial flow fan according to claim 1, characterized in that: The bracket (17) is welded to the inner wall of the wind tube (11) between the two guide rings (15).

3. The low-loss axial flow fan according to claim 1, characterized in that: The guide groove (23) is a wedge-shaped structure.

4. The low-loss axial flow fan according to claim 1, characterized in that: The guide plate (21) is a blade with an inclined curved surface.

5. The low-loss axial flow fan according to claim 1, characterized in that: The balls (18) are in rolling contact with the side walls of the annular grooves (19) respectively.

6. The low-loss axial flow fan according to claim 1, characterized in that: The connecting ring (20) is located in the inner wall of the guide ring (15), and the outer wall of the connecting ring (20) is fixedly connected to one end of each of the plurality of guide plates (21).

7. The low-loss axial flow fan according to claim 1, characterized in that: Two mounting plates (24) are provided and the mounting plates (24) are respectively fixedly connected to the end walls of the guide ring (15) and the connecting ring (20), and the two ends of the cleaning roller (25) are respectively rotatably connected to the mounting plates (24) on both sides.

8. The low-loss axial flow fan according to claim 7, characterized in that: The outer wall of the cleaning roller (25) is in rotational contact with the protective mesh cover (12).

9. The low-loss axial flow fan according to claim 5, characterized in that: The outer diameter of the guide ring (15) is smaller than the inner wall diameter of the wind cylinder (11).

10. The low-loss axial flow fan according to claim 1, characterized in that: A plurality of insertion holes are evenly spaced on the side walls at both ends of the wind tube (11), and the protective mesh cover (12) is fixedly connected to the wind tube (11) via bolts and nuts.

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