Angle-adjustable inner rotor fan impeller

Abstract

The utility model discloses an angle-adjustable inner rotor fan impeller which comprises an angle adjusting unit, the angle adjusting unit comprises a hub connected with an inner rotor fan transmission shaft and a plurality of blades, the hub comprises an upper cover and a lower cover, each blade is rotatably installed on the hub through a blade handle, a driven bevel gear is fixedly arranged on the blade handle in a sleeved mode, and the driven bevel gear is connected with the upper cover and the lower cover. The hub is slidably sleeved with a driving bevel gear meshed with the driven bevel gear, the driving bevel gear is connected with a driving assembly, the driving bevel gear is driven to rotate, the driven bevel gear is driven to rotate, and then the rotation angle of the blades is adjusted. According to the utility model, the driven bevel gear is driven to rotate by utilizing the rotation of the driving bevel gear through the driving assembly, and the blade handle rotates along with the rotation of the driven bevel gear, so that the accurate adjustment of the blade angle is realized, the requirements on air volume and air speed under different working conditions are met, and the ventilation heat dissipation or air power conversion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to inner rotor fan impeller technical field especially angle adjustable inner rotor fan impeller. BACKGROUND

[0002] In the related field of ventilation, heat dissipation and air power, inner rotor fan impellers are widely used. Traditional inner rotor fan impellers usually have fixed blade angles. Such fixed-angle impellers have obvious limitations when facing various complex working conditions. For example, in some scenarios that require real-time adjustment of air volume and air speed according to different working environments, fan impellers with fixed blade angles cannot meet the requirements.

[0003] If the existing fan impeller needs to change the blade angle, it often needs to be disassembled and reinstalled, which not only consumes a lot of time and labor cost, but also may damage the impeller structure due to improper operation. Therefore, it is of great practical significance to develop an inner rotor fan impeller that can conveniently and quickly adjust the blade angle to adapt to different working environments and working conditions. SUMMARY

[0004] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems of the existing angle-adjustable inner rotor fan impeller, the utility model is proposed.

[0006] Therefore, the utility model aims to provide an angle-adjustable inner rotor fan impeller, which is suitable for solving the problem that the existing fan impeller needs to be disassembled and reinstalled if it needs to change the blade angle, which not only consumes a lot of time and labor cost, but also may damage the impeller structure due to improper operation.

[0007] To solve the above technical problems, the utility model provides the following technical scheme: an angle-adjustable inner rotor fan impeller, comprising:

[0008] An angle adjustment unit, comprising a hub connected with an inner rotor fan drive shaft and a plurality of blades, the hub comprising an upper cover and a lower cover, each blade being rotatably mounted on the hub through a blade handle, a driven bevel gear being fixedly sleeved on the blade handle, a driving bevel gear being slidingly sleeved on the hub and engaging with the driven bevel gear, the driving bevel gear being connected with a driving assembly, the driving bevel gear being driven to rotate by driving the driving bevel gear, thereby adjusting the rotation angle of the blade.

[0009] The mounting unit comprises bolt fixing holes fixedly mounted on the upper cover and the lower cover, and the bolt fixing holes on the upper cover and the lower cover are connected through bolt fixing.

[0010] As a preferred scheme of the angle-adjustable inner rotor fan impeller, the driving assembly comprises a bracket fixedly mounted on the hub, a worm is rotationally connected to the bracket, a worm wheel is fixedly connected to the driving bevel gear, the worm wheel is sleeved on the hub, the worm wheel is in meshing connection with the worm, and a hexagonal shifting block is arranged at an end of the worm away from the bracket.

[0011] As a preferred scheme of the angle-adjustable inner rotor fan impeller, the mounting unit further comprises arc-shaped limiting pieces symmetrically arranged on the upper cover and the lower cover, each blade handle is located between two corresponding arc-shaped limiting pieces on the upper cover and the lower cover, the positions of the arc-shaped limiting pieces correspond to the positions of the blade handles, the number of the blades is even, and the number of the arc-shaped limiting pieces is twice the number of the blades.

[0012] As a preferred scheme of the angle-adjustable inner rotor fan impeller, a sliding groove is formed in the upper cover, and the arc-shaped limiting pieces on the upper cover are fixed to the inner side wall top end of the sliding groove.

[0013] As a preferred scheme of the angle-adjustable inner rotor fan impeller, one end of the blade handle penetrates through the sliding groove and is rotationally connected with a limiting block with a square cross section, and a square guide frame in sliding cooperation with the limiting block is fixed to the inner wall of the upper cover.

[0014] As a preferred scheme of the angle-adjustable inner rotor fan impeller, at least two axially extending guide strips are fixedly connected to the outer wall of the upper cover, and a guide groove in gap cooperation with the guide strips is formed in the lower cover.

[0015] The driving assembly is used for driving the driven bevel gear to rotate through the rotation of the driving bevel gear, the blade handle rotates with the rotation of the driven bevel gear, the accurate adjustment of the angle of the blade is realized, the requirements for air volume and air speed under different working conditions are met, the ventilation and heat dissipation or air power conversion efficiency is improved, and compared with the prior art, the driving assembly does not need to be disassembled and assembled.

[0016] The mounting unit is designed to facilitate the mounting of the upper cover and the lower cover, the cooperation of the guide strips and the guide groove helps to quickly position, and the bolt fixing connection ensures the stability of the structure.

[0017] The arc-shaped limiting piece plays a limiting role on the leaf stalk, ensures the stability of the leaf blade in the rotating process, avoids excessive rotation of the leaf blade, and the cooperation of the limiting block and the square guide frame further ensures the stability of the leaf stalk and prevents axial movement of the leaf stalk. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings. Among them:

[0019] Figure 1 The overall structure schematic diagram of the angle-adjustable inner rotor fan impeller is provided for the present application;

[0020] Figure 2 The hub structure sectional view of the angle-adjustable inner rotor fan impeller is provided for the present application;

[0021] Figure 3 The angle adjustment unit structure schematic diagram of the angle-adjustable inner rotor fan impeller is provided for the present application;

[0022] Figure 4 The blade structure schematic diagram of the angle-adjustable inner rotor fan impeller is provided for the present application.

[0023] Brief description of drawings: 100, angle adjustment unit; 101, hub; 102, upper cover; 103, lower cover; 104, blade; 105, leaf stalk; 106, driven bevel gear; 107, driving bevel gear; 108, bracket; 109, worm; 110, worm wheel; 111, hexagonal shifting block;

[0024] 200, mounting unit; 201, bolt fixing hole; 202, arc-shaped limiting piece; 203, sliding groove; 204, limiting block; 205, square guide frame; 206, guide bar; 207, guide groove. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail in conjunction with the drawings of the specification.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0027] Secondly, the "one embodiment" or "embodiment" referred to herein is intended to mean a specific feature, structure, characteristic, or combination of features and characteristics described herein that is included in at least one implementation of the present application. The various appearances of "in one embodiment" or "in an embodiment" in the specification are not necessarily all referring to the same embodiment.

[0028] Thirdly, the present application is described in detail in conjunction with the schematic diagram. In the detailed description of the embodiments of the present application, the sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in the actual manufacture.

[0029] Embodiment

[0030] Reference Figures 1-4 For one embodiment of the present application, an angle-adjustable inner rotor fan impeller is provided, comprising:

[0031] The angle adjusting unit 100 comprises a hub 101 connected with the inner rotor fan driving shaft and a plurality of blades 104. The hub 101 comprises an upper cover 102 and a lower cover 103. Each blade 104 is rotatably mounted on the hub 101 through a blade handle 105. A driven bevel gear 106 is fixedly sleeved on the blade handle 105. A driving bevel gear 107 engaged with the driven bevel gear 106 is slidingly sleeved on the hub 101. The driving bevel gear 107 is connected with a driving assembly. By driving the driving bevel gear 107 to rotate, the driven bevel gear 106 is driven to rotate, thereby adjusting the rotation angle of the blade 104.

[0032] The driving assembly comprises a bracket 108 fixedly installed on the hub 101. A worm 109 is rotatably connected to the bracket 108. A worm wheel 110 is fixedly connected to the driving bevel gear 107. The worm wheel 110 is sleeved on the hub 101. The worm wheel 110 is engagedly connected with the worm 109. A hexagonal shifting block 111 is arranged at one end of the worm 109 away from the bracket 108.

[0033] The mounting unit 200 comprises bolt fixing holes 201 fixedly installed on the upper cover 102 and the lower cover 103. The bolt fixing holes 201 on the upper cover 102 and the lower cover 103 are fixedly connected through bolts.

[0034] The mounting unit 200 further comprises arc-shaped limiting pieces 202 symmetrically arranged on the upper cover 102 and the lower cover 103, each petiole 105 is located between two corresponding arc-shaped limiting pieces 202, the positions of the arc-shaped limiting pieces 202 correspond to the positions of the petioles 105, the number of the blades 104 is even, and the number of the arc-shaped limiting pieces 202 is twice the number of the blades 104.

[0035] The upper cover 102 is provided with a sliding groove 203, and the arc-shaped limiting pieces 202 on the upper cover 102 are fixed to the top end of the inner side wall of the sliding groove 203.

[0036] One end of the petiole 105 penetrates through the sliding groove 203 and is rotationally connected with a limiting block 204 with a square cross section, and the inner wall of the upper cover 102 is fixedly connected with a square-shaped guide frame 205 in sliding cooperation with the limiting block 204.

[0037] The outer wall of the upper cover 102 is fixedly connected with at least two axially extending guide strips 206, and the lower cover 103 is provided with guide grooves 207 in gap cooperation with the guide strips 206.

[0038] In use, an initial state is that after the fan wheel is mounted, the blades 104 are in an initial angle state. At this time, the inner rotor fan is connected with the power source and started, the motor drives the transmission shaft to rotate, and then drives the hub 101 and the blades 104 to rotate synchronously. Under the initial angle, the fan works according to the pre-set working condition with a certain air volume and air speed, which meets the ventilation and heat dissipation or air power demand under a specific environment.

[0039] Working condition change: when the working environment changes, such as temperature rise, air flow resistance increase or new requirements of production process on air volume and air speed, it is necessary to adjust the angle of the blades 104 of the fan wheel. The operator monitors and analyzes the working environment parameters to determine that the angle of the blades 104 needs to be adjusted to adapt to the new working condition.

[0040] Angle adjustment: the operator prepares a suitable tool, such as an inner hexagonal wrench, and inserts it into the hexagonal block 111.

[0041] Slowly rotate the inner hexagonal wrench to drive the worm 109 to rotate around the support 108. Due to the meshing relationship between the worm 109 and the worm wheel 110, the rotation of the worm 109 promotes the synchronous rotation of the worm wheel 110.

[0042] The worm wheel 110 is fixedly connected with the driving bevel gear 107, so the driving bevel gear 107 also rotates. The driving bevel gear 107 and the driven bevel gear 106 are meshed with each other, and the rotation of the driving bevel gear 107 drives the rotation of the driven bevel gear 106

[0043] The driven bevel gear 106 is fixedly sleeved on the blade handle 105, so that the blade handle 105 rotates with the rotation of the driven bevel gear 106, so as to realize the accurate adjustment of the angle of the blade 104. The operator adjusts the blade 104 to the appropriate angle according to the working condition requirement.

[0044] Stable operation: after the angle adjustment of the blade 104 is completed, the fan impeller continues to operate at the new angle of the blade 104. During the operation, the arc-shaped limiting piece 202 plays a limiting role on the blade handle 105, ensuring the stability of the blade 104 during the rotation, avoiding excessive rotation of the blade 104, and the cooperation of the limiting block 204 and the square guide frame 205 further ensures the stability of the blade handle 105, preventing the axial movement of the blade handle 105, so as to ensure the continuous work of the blade 104 in a stable state.

[0045] When it is necessary to replace the number of blades 104 or maintain the blades 104, the bolt is loosened, the lower cover 103 is separated from the upper cover 102, then the blade 104 is taken out, and then the blade 104 is reinstalled. The cooperation of the guide strip 206 and the guide groove 207 helps to quickly position the lower cover 103 and the upper cover 102, ensuring the overall stability of the hub 101.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the utility model, and all should be covered in the scope of the claims of the utility model.

Claims

1. An angle adjustable inner rotor fan impeller, characterized by, The utility model relates to an angle adjusting unit (100) comprising a hub (101) connected with an inner rotor fan transmission shaft and a plurality of blades (104), the hub (101) comprising an upper cover (102) and a lower cover (103), each blade (104) being rotatably mounted on the hub (101) by a blade handle (105), a driven bevel gear (106) being fixedly sleeved on the blade handle (105), a driving bevel gear (107) being slidingly sleeved on the hub (101) and meshing with the driven bevel gear (106), the driving bevel gear (107) being connected with a driving assembly, the driving bevel gear (107) being driven to rotate, the driven bevel gear (106) being driven to rotate in turn, and the rotating angle of the blade (104) being adjusted. The mounting unit (200) comprises bolt fixing holes (201) fixedly mounted on the upper cover (102) and the lower cover (103), and the bolt fixing holes (201) on the upper cover (102) and the lower cover (103) are connected by bolts. The driving assembly comprises a bracket (108) fixedly mounted on the hub (101), a worm (109) rotatably connected to the bracket (108), and a worm wheel (110) fixedly connected to the driving bevel gear (107) and sleeved on the hub (101), the worm wheel (110) being meshingly connected with the worm (109), and the worm (109) being provided at one end away from the bracket (108) with a hexagonal shifting block (111).

2. An angle adjustable inner rotor fan impeller according to claim 1, characterized in that: The mounting unit (200) further comprises arc-shaped limiting pieces (202) symmetrically arranged on the upper cover (102) and the lower cover (103), each blade handle (105) being located between two corresponding arc-shaped limiting pieces (202) on the upper cover (102) and the lower cover (103), the positions of the arc-shaped limiting pieces (202) corresponding to the positions of the blade handles (105), the number of the blades (104) being even, and the number of the arc-shaped limiting pieces (202) being twice the number of the blades (104).

3. An angle adjustable inner rotor fan impeller according to claim 2, characterized in that: The upper cover (102) is provided with a sliding groove (203), and the arc-shaped limiting pieces (202) on the upper cover (102) are fixed to the inner side wall top end of the sliding groove (203).

4. An angle adjustable inner rotor fan impeller according to claim 3, characterized in that: One end of the blade handle (105) passes through the sliding groove (203) and is rotatably connected with a limiting block (204) having a square cross section, and the inner wall of the upper cover (102) is fixedly provided with a square guide frame (205) slidingly matched with the limiting block (204).

5. An angle adjustable inner rotor fan impeller according to claim 4, characterized in that: The outer wall of the upper cover (102) is fixedly connected with at least two axially extending guide strips (206), and the lower cover (103) is provided with guide grooves (207) gap-matched with the guide strips (206).

6. An angle adjustable inner rotor fan wheel according to claim 5, characterized in that: ​

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