Centrifugal fan capable of controlling blowing direction

Abstract

The utility model belongs to the technical field of centrifugal fans, and particularly relates to a centrifugal fan capable of controlling the blowing direction. Comprising a centrifugal fan unit, and an air direction adjusting mechanism is arranged on an air outlet of the centrifugal fan unit; the wind direction adjusting mechanism comprises an extension pipe located on an air outlet of the centrifugal fan unit, a first fixing plate is fixedly installed on one side of the extension pipe, a motor is fixedly installed on the first fixing plate, a first gear is fixedly installed at the output end of the motor, an L-shaped pipe is rotationally connected to the extension pipe, an annular tooth row is fixedly installed on the L-shaped pipe, and a square pipe is fixedly installed on the L-shaped pipe. And an air volume adjusting mechanism is arranged in the square pipe. According to the utility model, through the improvement of the structure and the material, the pipeline for rotary adjustment has longer service life, and the overall durability is better; through structural optimization of the tooth row and the gear, the small-angle adjusting capacity is improved, adjustment and fixation of a specific angle can be achieved, manual participation is reduced, and the angle adjusting range is wider.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal fans, and in particular relates to a centrifugal fan with controllable blowing direction. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings.

[0003] Publication (Announcement) No.: CN220204147U. The utility model discloses a centrifugal fan with controllable blowing direction, including a centrifugal fan body and an angle adjustment device, wherein the angle adjustment device is installed on the centrifugal fan body, and the angle adjustment device includes a large-angle adjustment structure and a small-angle adjustment structure. The large-angle adjustment structure includes an air guide cover, a connecting hose, a connecting block, a positioning block, an electric push rod, a connecting hinge seat and an auxiliary support assembly. The utility model relates to the technical field of centrifugal fans, and has the following beneficial effects: the case is provided with a large-angle adjustment structure, through the cooperation between the various components of the large-angle adjustment structure, the area swept by the air outlet is not only limited to above the horizontal end surface of the centrifugal fan, the area swept by the air outlet is expanded, and the blowing angle is increased; the case is provided with a small-angle adjustment structure, through the cooperation between the various components of the small-angle adjustment structure, the left and right air outlet angles can be controlled, and manual adjustment is faster, convenient and quick.

[0004] After analysis, it was found that the scheme used a connecting hose when adjusting the wind direction of the centrifugal fan. Since the wind speed of the centrifugal fan is relatively high, the use of the connecting hose will cause the hose to be affected by the high-speed airflow for a long time during use, and the overall service life will be greatly reduced, and the practicality and durability are poor. Moreover, the small-angle adjustment mechanism cannot achieve the fixation of a specific angle by manual means, which lacks practicality. In view of the above problems, the scheme needs to be optimized and improved. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a centrifugal fan with controllable blowing direction; it has a longer service life and more multi-directional adjustment angles.

[0006] The utility model provides a centrifugal fan with controllable blowing direction, including a centrifugal fan group, wherein a wind direction adjusting mechanism is provided on the air outlet of the centrifugal fan group; the wind direction adjusting mechanism includes an extension tube located on the air outlet of the centrifugal fan group, a fixing plate 1 is fixedly installed on one side of the extension tube, a motor is fixedly installed on the fixing plate 1, a gear 1 is fixedly installed on the output end of the motor, an L-shaped tube is rotatably connected to the extension tube, an annular gear row is fixedly installed on the L-shaped tube, the gear 1 and the annular gear row are meshed with each other, a square tube is fixedly installed on the L-shaped tube, and an air volume adjusting mechanism is provided inside the square tube.

[0007] Furthermore, the centrifugal fan unit includes a bracket located at the bottom, a drive motor is fixedly mounted on the bracket, a centrifugal pump body is fixedly mounted on the bracket, and an output end of the drive motor is fixedly connected to an input end of the centrifugal pump body.

[0008] Furthermore, the air volume adjustment mechanism includes a second fixed plate located on the square tube, an electric hydraulic rod is fixedly installed on the second fixed plate, a tooth row is fixedly installed on the movable end of the electric hydraulic rod, a plurality of hinges are evenly rotated and connected in the square tube, a rotating shaft is fixedly installed on the hinge, and a second gear is fixedly installed on one end of the rotating shaft extending out of the square tube, and the second gear is meshed with the tooth row.

[0009] Furthermore, a limit plate is fixedly mounted on the square tube corresponding to the tooth row, and the limit plate is slidably connected to the tooth row.

[0010] Furthermore, the tooth row is slidably connected to the outer surface of the square tube, and the gear 2 is rotationally connected to the outer surface of the square tube.

[0011] Furthermore, a stabilizing collar is rotatably connected to the outside of the L-shaped tube, a supporting rod is symmetrically fixedly mounted on the stabilizing collar, and the other end of the supporting rod is fixedly connected to the centrifuge body.

[0012] Furthermore, the bending angle of the L-shaped tube is 30°.

[0013] Beneficial effects of the utility model:

[0014] The utility model improves the structure and materials so that the pipeline used for rotation adjustment has a longer service life and better overall durability; through the structural optimization of the tooth row and the gear, the adjustment ability of small angles is improved, and the adjustment and fixation of specific angles can be achieved, which reduces manual participation and expands the range of angle adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front stereoscopic diagram of a centrifugal fan with controllable blowing direction according to the utility model.

[0016] Figure 2 It is a rear stereoscopic diagram of a centrifugal fan with controllable blowing direction according to the utility model.

[0017] Figure 3 The utility model is a schematic diagram of the structure on the extension pipe of a centrifugal fan with controllable blowing direction.

[0018] Figure 4 This is a schematic diagram of area A of a centrifugal fan with controllable blowing direction according to the utility model.

[0019] As shown in the figure:

[0020] 1. Centrifugal fan unit, 101. Bracket, 102. Drive motor, 103. Centrifugal pump body; 2. Extension pipe, 3. Fixed plate 1, 4. Motor, 5. Gear 1, 6. L-shaped pipe, 7. Ring gear row, 8. Square pipe, 9. Fixed plate 2, 10. Electric hydraulic rod, 11. Gear row, 12. Hinge, 13. Rotating shaft, 14. Gear 2, 15. Limiting plate, 16. Stabilizing ring, 17. Support rod. DETAILED DESCRIPTION

[0021] 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.

[0022] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0023] Please see all instructions drawings:

[0024] A centrifugal fan with controllable blowing direction comprises a centrifugal fan unit 1, and a wind direction regulating mechanism is provided on the air outlet of the centrifugal fan unit 1;

[0025] The wind direction adjustment mechanism includes an extension tube 2 located at the air outlet of the centrifugal fan unit 1, a fixing plate 3 is fixedly installed on one side of the extension tube 2, a motor 4 is fixedly installed on the fixing plate 3, a gear 5 is fixedly installed on the output end of the motor 4, an L-shaped tube 6 is rotatably connected to the extension tube 2, an annular gear row 7 is fixedly installed on the L-shaped tube 6, the gear 5 and the annular gear row 7 are meshed with each other, a square tube 8 is fixedly installed on the L-shaped tube 6, and an air volume adjustment mechanism is arranged in the square tube 8;

[0026] From the above description, it can be known that when the control motor 4 is working, it will drive the gear 5 to rotate, and through the rotation of the gear 5, the annular gear row 7 is driven to rotate, and the annular gear row 7 drives the L-shaped tube 6 to rotate. Through the rotation, the wind direction blown by the centrifugal fan unit 1 is changed. When the angle of the L-shaped tube 6 is adjusted, the air volume and air outlet direction can be adjusted again through the operation of the air volume adjustment mechanism.

[0027] As a technical optimization solution of the utility model, the centrifugal fan unit 1 includes a bracket 101 located at the bottom, a driving motor 102 is fixedly installed on the bracket 101, a centrifugal pump body 103 is fixedly installed on the bracket 101, and the output end of the driving motor 102 is fixedly connected to the input end of the centrifugal pump body 103;

[0028] From the above description, it can be seen that this is the composition of a conventional centrifugal fan unit 1, which is highly efficient, reliable and has a low cost.

[0029] As a technical optimization solution of the utility model, the air volume adjustment mechanism includes a fixed plate 2 9 located on the square tube 8, an electric hydraulic rod 10 is fixedly installed on the fixed plate 2 9, a tooth row 11 is fixedly installed on the movable end of the electric hydraulic rod 10, a plurality of hinges 12 are evenly rotated and connected in the square tube 8, a rotating shaft 13 is fixedly installed on the hinge 12, and a gear 2 14 is fixedly installed on one end of the rotating shaft 13 extending out of the square tube 8, and the gear 2 14 is meshed with the tooth row 11;

[0030] From the above description, it can be seen that by controlling the operation of the electric hydraulic rod 10, the lateral movement of the tooth row 11 is achieved, the gear 2 14 is driven to rotate, and the connected hinge 12 is driven to flip at the same time, so as to adjust the area of ​​the air outlet of the other tube 8 and the air outlet direction, and a variety of adjustment angles can be achieved, realizing more types of adjustments.

[0031] As a technical optimization solution of the utility model, a limit plate 15 is fixedly installed on the square tube 8 corresponding to the tooth row 11, and the limit plate 15 is slidably connected to the tooth row 11;

[0032] It can be seen from the above description that, by disposing the limiting plate 15 , the stability of the gear row 11 during lateral movement can be improved, thereby improving the overall stability.

[0033] As a technical optimization solution of the utility model, the gear row 11 is slidably connected to the outer surface of the square tube 8, and the gear 2 14 is rotatably connected to the outer surface of the square tube 8;

[0034] It can be seen from the above description that the connection mode of sliding connection and rotating connection makes the connection between the gear row 11 and the gear 2 14 more stable.

[0035] As a technical optimization solution of the utility model, the L-shaped tube 6 is rotatably connected to a stabilizing collar 16, and a support rod 17 is symmetrically fixedly installed on the stabilizing collar 16, and the other end of the support rod 17 is fixedly connected to the centrifuge body 103;

[0036] It can be seen from the above description that the stabilizing collar 16 and the second support rod 17 can make the L-shaped tube 6 more stable and share the pressure between the extension tube 2 .

[0037] As a technical optimization solution of the utility model, the bending angle of the L-shaped tube 6 is 30°;

[0038] Working principle:

[0039] The control motor 4 is operated to drive the gear 1 5 to rotate, and the rotation of the gear 1 5 drives the annular gear row 7 to rotate, and the annular gear row 7 drives the L-shaped tube 6 to rotate. Through the rotation, the wind direction blown by the centrifugal fan unit 1 changes. When the angle of the L-shaped tube 6 is adjusted, the operation of the electric hydraulic rod 10 is controlled to realize the lateral movement of the gear row 11, drive the gear 2 14 to rotate, and drive the connected hinge 12 to flip at the same time, so as to realize the adjustment of the area of ​​the air outlet of the other tube 8 and the adjustment of the air outlet direction, and can achieve a variety of adjustment angles and realize more types of adjustments.

[0040] The above describes the utility model and its implementation methods, which are not restrictive. The specific implementation method is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A centrifugal fan with controllable blowing direction, comprising a centrifugal fan unit, characterized in that: The air outlet of the centrifugal fan unit is provided with a wind direction adjustment mechanism; the wind direction adjustment mechanism includes an extension tube located on the air outlet of the centrifugal fan unit, a fixing plate 1 is fixedly installed on one side of the extension tube, a motor is fixedly installed on the fixing plate 1, a gear 1 is fixedly installed on the output end of the motor, an L-shaped tube is rotatably connected to the extension tube, an annular gear row is fixedly installed on the L-shaped tube, the gear 1 and the annular gear row are meshed with each other, a square tube is fixedly installed on the L-shaped tube, and an air volume adjustment mechanism is provided in the square tube.

2. A centrifugal fan with controllable blowing direction according to claim 1, characterized in that: The centrifugal fan unit comprises a bracket located at the bottom, a driving motor is fixedly mounted on the bracket, a centrifugal pump body is fixedly mounted on the bracket, and an output end of the driving motor is fixedly connected to an input end of the centrifugal pump body.

3. A centrifugal fan with controllable blowing direction according to claim 2, characterized in that: The air volume adjustment mechanism includes a second fixed plate located on the square tube, an electric hydraulic rod is fixedly installed on the second fixed plate, a tooth row is fixedly installed on the movable end of the electric hydraulic rod, a plurality of hinges are evenly rotated and connected in the square tube, a rotating shaft is fixedly installed on the hinge, a second gear is fixedly installed on one end of the rotating shaft extending out of the square tube, and the second gear is meshed with the tooth row.

4. A centrifugal fan with controllable blowing direction according to claim 3, characterized in that: A limit plate is fixedly mounted on the square tube corresponding to the tooth row, and the limit plate is slidably connected to the tooth row.

5. The centrifugal fan with controllable blowing direction according to claim 3, characterized in that: The tooth row is slidably connected to the outer surface of the square tube, and the second gear is rotatably connected to the outer surface of the square tube.

6. A centrifugal fan with controllable blowing direction according to claim 2, characterized in that: A stabilizing collar is rotatably connected to the outside of the L-shaped tube, a supporting rod is symmetrically fixedly mounted on the stabilizing collar, and the other end of the supporting rod is fixedly connected to the centrifuge body.

7. The centrifugal fan with controllable blowing direction according to claim 1, characterized in that: The bending angle of the L-shaped tube is 30°.

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