Birdcage fan

Abstract

The utility model relates to a birdcage fan, which belongs to the technical field of fans and comprises a motor, a mesh enclosure, fan blades and an angle adjusting mechanism, the motor is mounted at one end of the mesh enclosure, the fan blades are arranged in the mesh enclosure and fixedly connected with an output shaft of the motor, the angle adjusting mechanism comprises a motor support and a fan support, and the motor support and the fan support can rotate relatively and are locked. The motor support is fixed on the shell of the motor, the fan support is fixed on a wall body or the ground, by adopting the structure, the wind direction angle is adjusted through the angle adjusting mechanism, so that the use requirements in different scenes are met, the mesh enclosure effectively prevents foreign objects from entering to influence the operation of the fan blades, the whole structure is simpler, the disassembly and the cleaning are convenient, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fans, and particularly relates to a bird cage fan. Background Art

[0002] Axial flow fans are fans whose airflow direction is the same as the axis of the fan blades. Axial flow fans can be used for ventilation in general factories, warehouses, offices, and residential areas. They can also be used for air coolers (air coolers), evaporators, condensers, spray dust suppression, etc. Axial flow fans are mainly composed of fan blades, housing, motor and other parts. The bracket is connected to the housing duct with steel.

[0003] With the rapid development of modern industry, axial flow fans are increasingly used. However, traditional axial flow fans have problems such as complex structure, inconvenient wind direction adjustment, easy dust accumulation, and difficult maintenance. In particular, in some situations where the wind direction needs to be adjusted to meet the needs of different scenarios, keep the environment clean, or reduce maintenance costs, the shortcomings of traditional axial flow fans are particularly obvious.

[0004] Therefore, a birdcage fan with simple structure and adjustable wind direction angle is in urgent need of appearance. Utility Model Content

[0005] The utility model provides a birdcage fan, which is used to solve the technical problems of the common axial flow fans in the prior art that the structure is complicated and the wind direction angle is difficult to adjust.

[0006] The utility model is realized through the following technical scheme: a bird cage fan, comprising a motor, a mesh cover, a fan blade and an angle adjustment mechanism, wherein the motor is mounted at one end of the mesh cover, the fan blade is arranged in the mesh cover and is fixedly connected to the output shaft of the motor, and the angle adjustment mechanism comprises a motor bracket and a fan bracket which can rotate relatively and be locked, the motor bracket is fixed on the housing of the motor, and the fan bracket is fixed on a wall or the ground.

[0007] In order to better realize the utility model, further optimization is made in the above structure. A screw hole is provided at the end of the motor bracket, an arc-shaped groove is provided on the outside of the screw hole, a round hole is provided at the end of the fan bracket, and a strip groove corresponding to the position of the arc-shaped groove is provided on the inside of the round hole. It also includes a first bolt, a second bolt, a nut and a butterfly nut. The first bolt passes through the screw hole and the round hole in turn and is screwed to the nut. The second bolt passes through the arc groove and the strip groove in turn and is screwed and fixed to the butterfly nut.

[0008] In order to better realize the utility model, further optimization is made in the above structure, the mesh cover includes a cover body and a cover cover, the center position of one end of the cover body is concave to form a slot hole for installing the motor, the other end of the cover body is open, and the cover cover is detachably covered on the open end of the cover body.

[0009] In order to better implement the utility model, further optimization is made in the above structure, and a clamping strip for limiting the position of the motor is provided at the bottom of the slot.

[0010] In order to better realize the utility model, further optimization is made in the above structure, and a plurality of elastic strips are evenly arranged on the inner side of the edge of the cover, and the middle part of the elastic strips is concave to form a groove portion. When the cover is closed on the open end of the cover body, the edge of the open end of the cover body is embedded in the groove portion, and the elastic strips support the open end of the cover body in the radial direction.

[0011] In order to better realize the utility model, further optimization is made in the above structure. The fan blades include a mounting plate and three blades. The three blades are evenly fixed to the mounting plate along the circumferential direction by screws. A connecting column is provided at the center of the mounting plate. The connecting column is provided with a connecting hole. The output shaft of the motor is threaded or interference-inserted in the connecting hole of the connecting column.

[0012] In order to better realize the utility model, further optimization is made in the above structure, and the motor is provided with a waterproof joint.

[0013] In order to better realize the utility model, further optimization is made in the above structure, and the mesh cover is a structural member made of carbon structural steel.

[0014] In order to better realize the utility model, further optimization is made in the above structure, and the surface of the mesh cover is provided with an anti-corrosion coating.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The birdcage fan provided by the utility model includes a motor, a mesh cover, fan blades and an angle adjustment mechanism, the motor is installed at one end of the mesh cover, the fan blades are arranged in the mesh cover and are fixedly connected to the output shaft of the motor, the angle adjustment mechanism includes a motor bracket and a fan bracket which can rotate relatively and be locked, the motor bracket is fixed on the housing of the motor, and the fan bracket is fixed on a wall or the ground. With this structure, the wind direction angle is adjusted by the angle adjustment mechanism to meet the use requirements in different scenarios, the mesh cover effectively prevents foreign objects from entering and affecting the operation of the fan blades, the overall structure is simpler, easy to disassemble and clean, and the maintenance cost is reduced, making the utility model more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is an exploded view of the bird cage fan in the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the bird cage fan in the utility model.

[0020] In the figure:

[0021] 1-motor; 2-motor bracket; 3-fan bracket; 4-arc groove; 5-screw hole; 6-round hole; 7-strip groove; 8-cover body; 9-cover; 10-slot hole; 11-card strip; 12-elastic insert strip; 13-groove part; 14-mounting plate; 15-blade; 16-connecting column; 17-connecting hole; 18-waterproof connector. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] Embodiment 1:

[0026] In this embodiment, a bird cage fan, such as Figure 1 and Figure 2 As shown, it includes a motor 1, a mesh cover, fan blades and an angle adjustment mechanism. Specifically, the motor 1 is installed at one end of the mesh cover, the fan blades are arranged in the mesh cover and fixedly connected to the output shaft of the motor 1, and the angle adjustment mechanism includes a motor bracket 2 and a fan bracket 3 that can rotate relative to each other and be locked, the motor bracket 2 is fixed on the housing of the motor 1, and the fan bracket 3 is fixed on a wall or the ground.

[0027] With this structure, the wind direction angle is adjusted through the angle adjustment mechanism to meet the usage requirements in different scenarios. The mesh cover effectively prevents foreign objects from entering and affecting the operation of the fan blades. The overall structure is simpler, easy to disassemble and clean, and reduces maintenance costs, making the utility model more practical.

[0028] As a specific implementation of this embodiment, Figure 2 As shown, a screw hole 5 is provided at the end of the motor bracket 2, and an arc groove 4 is provided on the side of the screw hole 5 away from the motor 1, and the arc groove 4 takes the screw hole 5 as the center of the circle. A circular hole 6 is provided at the end of the fan bracket 3, and a strip groove 7 corresponding to the position of the arc groove 4 is provided on the inner side of the circular hole 6. The fan bracket 3 also includes a first bolt, a second bolt, a nut and a butterfly nut. The first bolt passes through the screw hole 5 and the circular hole 6 in sequence and is screwed with the nut, wherein the nut is not tightened, so that the motor bracket 2 and the fan bracket 3 can rotate relative to each other with the screw hole 5 and the circular hole 6 as the center of the circle, and the second bolt passes through the arc groove 4 and the strip groove 7 in sequence and is screwed and fixed with the butterfly nut. When the angle needs to be adjusted, the butterfly nut is loosened, the motor bracket 2 and the motor 1 are rotated, so that the second bolt moves along the arc groove 4 to the required position, and then the butterfly nut is tightened to fix the motor bracket 2 and the fan bracket 3, so that the fan faces the specified direction.

[0029] In this embodiment, Figure 1As shown, the mesh cover includes a cover body 8 and a cover 9. The center position of one end of the cover body 8 is concave to form a slot 10 for installing the motor 1. The bottom of the slot 10 is provided with a clamping strip 11 for limiting the position of the motor 1. The portion of the motor 1 exceeding half of its length is embedded in the slot 10. The clamping strip 11 is pressed against to limit the position of the motor 1, and the angle adjustment mechanism is exposed outside the slot 10. The other end of the cover body 8 is open, and the cover 9 is detachably covered on the open end of the cover body 8. The cover body 8 is of an extended type, so that the space of the cover body 8 is larger, thereby making the air inlet area of ​​the cover body 8 behind the fan blades larger, which correspondingly reduces the wind speed and suction force of the air inlet surface, thereby reducing the risk of inhaling foreign objects such as leaves and weeds.

[0030] In this embodiment, the mesh cover is a structural member made of carbon structural steel, which has high structural strength, is not easy to deform, and has good corrosion resistance. As an optimization, the surface of the mesh cover is provided with an anti-corrosion coating to further improve the anti-corrosion ability and extend the service life.

[0031] In this embodiment, Figure 1 As shown, a plurality of elastic inserts 12 are evenly arranged on the inner side of the edge of the cover 9, and the elastic inserts 12 are used to be plugged into the inner wall of the open end of the cover body 8, and the middle part of the elastic inserts 12 is concave to form a groove portion 13, and the groove portion 13 is used to clamp the edge of the open end of the cover body 8, wherein the outer diameter of the end of the elastic inserts 12 is smaller than the inner diameter of the open end of the cover body 8, so that the elastic inserts 12 can be inserted into the inner wall of the open end of the cover body 8, and the outer diameter of the end of the elastic inserts 12 connected to the cover 9 is larger than the inner diameter of the open end of the cover body 8. When the cover 9 is closed on the open end of the cover body 8, the elastic inserts 12 are compressed and deformed, and the edge of the open end of the cover body 8 is embedded in the groove portion 13. At this time, the elastic inserts 12 radially support the open end of the cover body 8 outward, which is easy to clean after disassembly and assembly, thereby reducing maintenance costs.

[0032] In this embodiment, Figure 1 As shown, the fan blades include a mounting plate 14 and three blades 15. The three blades 15 are evenly fixed to the mounting plate 14 along the circumferential direction by screws. A connecting column 16 is provided at the center of the mounting plate 14. The connecting column 16 is provided with a connecting hole 17. The output shaft of the motor 1 is threaded or interference-fitted in the connecting hole 17 of the connecting column 16. The connection is reliable and easy to disassemble and assemble. A waterproof joint 18 is provided on the side of the motor 1 to improve the waterproof and leakage-proof capabilities and improve safety.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A birdcage fan, characterized in that: The invention comprises a motor (1), a mesh cover, a fan blade and an angle adjustment mechanism, wherein the motor (1) is mounted at one end of the mesh cover, the fan blade is arranged in the mesh cover and is fixedly connected to the output shaft of the motor (1), and the angle adjustment mechanism comprises a motor bracket (2) and a fan bracket (3) which are relatively rotatable and lockable, the motor bracket (2) is fixed on the housing of the motor (1), and the fan bracket (3) is fixed on a wall or the ground.

2. A birdcage fan according to claim 1, characterized in that: The motor support (2) has a screw hole (5) at the end thereof, an arc groove (4) is arranged outside the screw hole (5), a round hole (6) is arranged at the end thereof, a strip groove (7) corresponding to the position of the arc groove (4) is arranged inside the round hole (6), and the fan support (3) further comprises a first bolt, a second bolt, a nut and a butterfly nut, wherein the first bolt passes through the screw hole (5) and the round hole (6) in sequence and is then screwed to the nut, and the second bolt passes through the arc groove (4) and the strip groove (7) in sequence and is then screwed to the butterfly nut.

3. The birdcage fan according to claim 1, characterized in that: The mesh cover comprises a cover body (8) and a cover cover (9); a central position of one end of the cover body (8) is concave to form a slot hole (10) for mounting the motor (1); the other end of the cover body (8) is open, and the cover cover (9) is detachably covered on the open end of the cover body (8).

4. A birdcage fan according to claim 3, characterized in that: A clamping strip (11) for limiting the position of the motor (1) is provided at the bottom of the slotted hole (10).

5. The birdcage fan according to claim 3, characterized in that: A plurality of elastic insert strips (12) are evenly arranged on the inner side of the edge of the cover (9), and the middle part of the elastic insert strips (12) is concave to form a groove portion (13). When the cover (9) covers the open end of the cover body (8), the edge of the open end of the cover body (8) is embedded in the groove portion (13), and the elastic insert strips (12) support the open end of the cover body (8) in the radial direction.

6. A birdcage fan according to any one of claims 1-5, characterized in that: The fan blade comprises a mounting plate (14) and three blades (15); the three blades (15) are evenly fixed to the mounting plate (14) along the circumferential direction by screws; a connecting column (16) is provided at the center of the mounting plate (14); the connecting column (16) is provided with a connecting hole (17); the output shaft of the motor (1) is threaded or interference-inserted into the connecting hole (17) of the connecting column (16).

7. A birdcage fan according to claim 6, characterized in that: The motor (1) is provided with a waterproof joint (18).

8. A birdcage fan according to claim 7, characterized in that: The mesh cover is a structural member made of carbon structural steel.

9. A birdcage fan according to claim 8, characterized in that: The surface of the mesh cover is provided with an anti-corrosion coating.

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