Outdoor large-air-volume fan

Abstract

The utility model discloses an outdoor large-air-volume fan, which belongs to the technical field of fans and is characterized in that one side of a fan shell is provided with an air inlet cover, the other side of the fan shell is fixedly connected with a speed increasing box, a spiral plate is fixedly connected inside the speed increasing box, a spiral groove is enclosed by the spiral plate and the inner wall of the speed increasing box, the inner wall of the fan shell is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the fan shell. A connecting rod is arranged in the speed increasing box, a fixing sleeve is fixedly connected to one end of the connecting rod, a motor is fastened to the surface of the fixing sleeve through a bolt, a rotating shaft is arranged at the output end of the motor, and a fan impeller is fixedly installed on the surface of the rotating shaft. And through the arrangement of the base, the damping columns, the damping springs and the ground nails, the functions of buffering, damping and skid resistance are achieved, the situation that the draught fan moves due to vibration force in the working process can be avoided, and the working position stability of the draught fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and more specifically to an outdoor fan with a large air volume. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Although commonly used outdoor fans can form a swirl of wind during use, the swirl effect is not good, the increased air outlet speed is limited, and during the operation of the fan, its vibration force will cause the fan to move, reducing the stability of its working position.

[0003] For example, the outdoor large-air-volume fan disclosed in announcement No. CN205895636U includes a casing, a power assembly, a fan impeller, a rotating shaft and an air gathering assembly for increasing the air volume of the fan, wherein the air gathering assembly includes an air collecting part connected to the air inlet and an air supply part connected to the air outlet; the air gathering part includes an air collecting hood for introducing external wind into the casing, and a first connecting part for connecting the air collecting hood and the casing; the air collecting hood is a trumpet-shaped arrangement with a larger front and a smaller back.

[0004] It can be seen from the above-mentioned public scheme that the fan uses the spiral inner wall to make the wind body form a swirl. Since the contact area between the wind body and the spiral inner wall is limited, the effect of the swirl formed by the wind body is reduced, thereby limiting the wind speed. In addition, the installed feet are in contact with the ground, and relying on a single shock-absorbing pad, the fan may move due to vibration force during operation, thereby reducing the stability of the fan's working position. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the present utility model is to provide an outdoor type large air volume fan, which can increase the effect of the wind body forming a swirl through the spiral plate and spiral groove arranged in the speed increase box, thereby greatly increasing the air outlet speed, and has buffering, shock absorbing and anti-slip functions through the arranged base, shock absorbing column, shock absorbing spring and ground nails, which can prevent the fan from moving due to vibration force during operation, thereby improving the working position stability of the fan.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] An outdoor large-air-volume fan comprises a fan housing, one side of the fan housing is provided with an air inlet cover, the other side of the fan housing is fixedly connected with a speed increasing box, the interior of the speed increasing box is fixedly connected with a spiral plate, the spiral plate and the inner wall of the speed increasing box surround a spiral groove, the inner wall of the fan housing is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a fixing sleeve, the surface of the fixing sleeve is fastened with a motor by bolts, the output end of the motor is provided with a rotating shaft, the surface of the rotating shaft is fixedly mounted with a fan impeller, the fan housing and the bottom of the speed increasing box are fixedly connected with a connecting rod A connecting plate, the bottom of which is fixedly connected to a shock-absorbing column, the outer side of which is sleeved with a shock-absorbing spring, one end of which is fixedly connected to a base, and the surface of the base is movably sleeved with a ground nail. The outdoor large-air-volume fan can increase the effect of the wind body forming a vortex through the spiral plate and spiral groove set in the speed increase box, thereby greatly increasing the air outlet speed, and has buffering, shock-absorbing and anti-slip functions through the set base, shock-absorbing column, shock-absorbing spring and ground nail, which can prevent the fan from moving due to vibration force during operation, thereby improving the working position stability of the fan.

[0008] Furthermore, a support rod is fixedly connected to the inner wall of the air inlet end of the spiral groove, one end of the support rod is fixedly connected to a bearing, the inner ring of the bearing is provided with a mounting hole, the inner wall of the mounting hole is fixedly connected to one end of the rotating shaft, and the support rod and the bearing can increase the rotational stability of the rotating shaft and the fan impeller.

[0009] Furthermore, the fixing sleeve is formed by two rotatable semicircular plates, the surface of the fixing sleeve is provided with bolt holes, and the surface of the motor is fixedly connected with a screw rod, so as to facilitate the installation and fixation of the motor.

[0010] Furthermore, an air outlet is provided on the surface of the speed increasing box, one end of the air outlet is connected to the air outlet end of the spiral groove, and the other end of the air outlet is provided with an air outlet cover.

[0011] Furthermore, the air outlet cover is in a trumpet shape, a trumpet groove is formed inside the air outlet cover, and the inner wall of the trumpet groove is provided with a spiral inner wall, which can form a vortex for the wind body.

[0012] Furthermore, the shape of the mounting hole is polygonal, and a polygonal plug is provided at one end of the rotating shaft to prevent the rotating shaft and the inner ring of the bearing from slipping and rotating.

[0013] Furthermore, a limiting cap with a hole is provided at one end of the ground nail to facilitate prying the ground nail upward out of the ground.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In this solution, the spiral plate and spiral groove provided in the speed increasing box can increase the effect of the wind body forming a swirl flow, thereby greatly increasing the air outlet speed.

[0016] (2) This solution has the functions of buffering, shock absorption and anti-slip by setting up the base, shock-absorbing columns, shock-absorbing springs and ground nails, which can prevent the fan from moving due to vibration during operation and improve the stability of the fan's working position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a top view of the speed increasing box structure of the utility model;

[0019] Figure 3 for Figure 2 A three-dimensional diagram of the spiral plate structure;

[0020] Figure 4 for Figure 2 Side view of the bearing and support rod mounting structure.

[0021] Description of the numbers in the figure:

[0022] 1 fan housing, 11 air inlet cover, 12 motor, 13 rotating shaft, 14 fan impeller, 15 fixing sleeve, 16 connecting rod, 2 speed increasing box, 21 spiral plate, 22 spiral groove, 23 air outlet, 24 air outlet cover, 3 bearing, 31 mounting hole, 32 support rod, 4 base, 41 shock absorbing column, 42 shock absorbing spring, 43 connecting plate, 5 ground nail, 51 limiting cap. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-4, an outdoor large air volume fan, including a fan housing 1, one side of the fan housing 1 is provided with an air inlet cover 11, the air inlet cover 11 is in the shape of a trumpet, and the inner wall is provided with a spiral inner wall, which can make the incoming wind form a swirl and increase the air intake speed, which belongs to the prior art, and its specific structure and working principle are well known to those skilled in the art, and will not be described in detail here, the other side of the fan housing 1 is fixedly connected with a speed increasing box 2, the interior of the speed increasing box 2 is fixedly connected with a spiral plate 21, the spiral plate 21 and the inner wall of the speed increasing box 2 surround a spiral groove 22, the inner wall of the fan housing 1 is fixedly connected with a connecting rod 16, one end of the connecting rod 16 is fixedly connected with a fixing sleeve 15, the fixing sleeve 15 is surrounded by two rotatable semicircular plates, the surface of the fixing sleeve 15 is provided with bolt holes, the surface of the motor 12 is fixedly connected with a screw, which is convenient for the installation and fixation of the motor 12, and the fixing sleeve The surface of 15 is fastened with a motor 12 by bolts, and the motor 12 and the fan impeller 14 belong to the prior art. The output end of the motor 12 is provided with a rotating shaft 13, and the fan impeller 14 is fixedly installed on the surface of the rotating shaft 13. The bottom of the fan housing 1 and the speed increasing box 2 is fixedly connected with a connecting plate 43, and the bottom of the connecting plate 43 is fixedly connected with a shock absorbing column 41. The shock absorbing column 41 is a hydraulic buffer telescopic rod, and a damper is provided to prevent the shock absorbing column 41 and the shock absorbing spring 42 from moving up and down at will. The outer side of the shock absorbing column 41 is sleeved with a shock absorbing spring 42, and the shock absorbing spring 42 and the shock absorbing column 41 have the function of buffering and shock absorbing, and one end of the shock absorbing column 41 is fixedly connected with a base 4, and the surface of the base 4 is provided with a jack for a ground nail 5, and the surface of the base 4 is movably sleeved with a ground nail 5, and the ground nail 5 can prevent the base 4 from slipping with the ground, and one end of the ground nail 5 is provided with a limit cap 51 with a hole, which is convenient for the ground nail 5 to pry upward out of the ground.

[0026] A support rod 32 is fixedly connected to the inner wall of the air inlet end of the spiral groove 22, one end of the support rod 32 is fixedly connected to the bearing 3, the inner ring of the bearing 3 is provided with a mounting hole 31, the inner wall of the mounting hole 31 is fixedly connected to one end of the rotating shaft 13, the support rod and the bearing 3 can increase the rotational stability of the rotating shaft 13 and the fan impeller 14, the shape of the mounting hole 31 is polygonal, and one end of the rotating shaft 13 is provided with a polygonal plug to prevent the rotating shaft 13 and the inner ring of the bearing 3 from slipping and rotating.

[0027] An air outlet 23 is provided on the surface of the speed increasing box 2, one end of the air outlet 23 is connected to the air outlet end of the spiral groove 22, and an air outlet cover 24 is provided at the other end of the air outlet 23. The air outlet cover 24 is in a trumpet shape, and a trumpet groove is formed inside the air outlet cover 24. The inner wall of the trumpet groove is provided with a spiral inner wall, which can form a vortex for the wind body.

[0028] When the outdoor large-air-volume fan is in use, the base 4 is first placed on the working ground, and then the ground nail 5 is inserted downward into the ground, and then the motor 12 is started. The motor 12 drives the rotating shaft 13 to rotate, and the rotation of the rotating shaft 13 drives the fan impeller 14 to rotate. The fan impeller 14 rotates so that the external wind enters through the air inlet cover 11, and then blows into the spiral groove 22 so that the wind rotates along the spiral groove 22 to form a vortex. Then the wind that forms the vortex is accelerated and blown out through the air outlet 23 and the air outlet cover 24. At the same time, the vibration force generated by the operation of the motor 12, the vibration force generated by the operation of the fan impeller 14, and the vibration force generated by the speed increase box 2 when the wind forms a vortex will be damped by the shock absorbing column 41 and the shock absorbing spring 42. The fan is cut down, and at the same time, the base 4 is fixed by the ground nail 5, so that the fan will not move or rotate, thereby automatically adjusting the direction of air inlet and outlet. When the fan is not in use, the motor 12 is powered off, and then the force rod is inserted into the hole set in the limit cap 51, and then the ground nail 5 is pried up to make the lower end of the ground nail 5 break away from the ground, and then the fan is moved. The spiral plate 21 and the spiral groove 22 set in the speed increase box 2 can increase the effect of the wind body forming a vortex, thereby greatly increasing the air outlet speed, and the provided base 4, shock absorbing column 41, shock absorbing spring 42 and ground nail 5 have the functions of buffering, shock absorption and anti-slip, which can prevent the fan from moving due to vibration force during operation, thereby improving the working position stability of the fan.

[0029] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An outdoor large air volume fan, comprising a fan housing (1), wherein one side of the fan housing (1) is provided with an air inlet cover (11), characterized in that: The other side of the fan housing (1) is fixedly connected to a speed increasing box (2), the interior of the speed increasing box (2) is fixedly connected to a spiral plate (21), the spiral plate (21) and the inner wall of the speed increasing box (2) enclose a spiral groove (22), the inner wall of the fan housing (1) is fixedly connected to a connecting rod (16), one end of the connecting rod (16) is fixedly connected to a fixing sleeve (15), the surface of the fixing sleeve (15) is fastened with a motor (12) by bolts, and the motor (12) The output end of the fan is provided with a rotating shaft (13), a fan impeller (14) is fixedly mounted on the surface of the rotating shaft (13), a connecting plate (43) is fixedly connected to the bottom of the fan housing (1) and the speed increasing box (2), a shock absorbing column (41) is fixedly connected to the bottom of the connecting plate (43), a shock absorbing spring (42) is sleeved on the outer side of the shock absorbing column (41), one end of the shock absorbing column (41) is fixedly connected to a base (4), and a ground nail (5) is movably sleeved on the surface of the base (4).

2. The outdoor large air volume fan according to claim 1, characterized in that: A support rod (32) is fixedly connected to the inner wall of the air inlet end of the spiral groove (22), one end of the support rod (32) is fixedly connected to a bearing (3), an inner ring of the bearing (3) is provided with a mounting hole (31), and the inner wall of the mounting hole (31) is fixedly connected to one end of the rotating shaft (13).

3. The outdoor large air volume fan according to claim 1, characterized in that: The fixing sleeve (15) is formed by enclosing two rotatable semicircular plates, a surface of the fixing sleeve (15) is provided with bolt holes, and a screw is fixedly connected to the surface of the motor (12).

4. The outdoor large air volume fan according to claim 1, characterized in that: An air outlet (23) is provided on the surface of the speed increasing box (2), one end of the air outlet (23) is connected to the air outlet end of the spiral groove (22), and the other end of the air outlet (23) is provided with an air outlet cover (24).

5. The outdoor large air volume fan according to claim 4, characterized in that: The air outlet cover (24) is in the shape of a trumpet, a trumpet groove is formed inside the air outlet cover (24), and the inner wall of the trumpet groove is provided with a spiral inner wall.

6. The outdoor large air volume fan according to claim 2, characterized in that: The shape of the mounting hole (31) is polygonal, and one end of the rotating shaft (13) is provided with a polygonal plug.

7. The outdoor large air volume fan according to claim 1, characterized in that: One end of the ground nail (5) is provided with a limiting cap (51) with a hole.

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