Fan assembly and heat exchange device

Abstract

The application provides a fan assembly and heat exchange equipment. The fan assembly comprises an outer rotor motor, the outer rotor motor comprising a rotor and a shell, the shell being fixed to the rotor, and a fixing shaft being arranged on the shell; a fan blade, the fan blade being provided with a mounting hole; and the fixing shaft being capable of extending into the mounting hole to complete fixing of the fan blade and the outer rotor motor. The fan assembly and heat exchange equipment provided by the application are provided with the mounting hole on the fan blade, and can be installed in cooperation with the fixing shaft on the shell of the outer rotor motor, thereby overcoming the problem of difficult assembly between the outer rotor motor and the fan blade in the prior art. Meanwhile, the fan blade is provided with a guide structure and a reinforcing rib, and no shaft sleeve assembly is required in the middle, thereby improving assembly efficiency of the centrifugal fan blade and the outer rotor motor, reducing use cost of the outer rotor motor, and driving the fan blade by using the outer rotor motor, thereby effectively reducing noise.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment equipment, and particularly relates to a fan assembly and heat exchange equipment. BACKGROUND

[0002] The existing rotor motor includes an inner rotor motor and an outer rotor motor. The inner rotor motor is relatively simple to manufacture and has a lower cost, while the outer rotor motor is opposite, the rotor is outside and the stator is inside, which is relatively difficult to manufacture and is inconvenient to assemble with a fan blade. Therefore, the traditional canopy machine widely uses the inner rotor motor, the motor is single-axially connected with the fan blade, and the outer rotor motor is not used. However, the inner rotor motor has poor dynamic balance, and the rotation has poor stability, which makes the reliability of the canopy machine poor and the noise large. SUMMARY

[0003] In order to solve the technical problems of low reliability and large noise of the existing canopy machine using the inner rotor motor, a fan assembly and heat exchange equipment using the outer rotor motor and provided with a fixing shaft and a mounting hole are provided to improve the assembly efficiency and reduce the noise.

[0004] A fan assembly comprises:

[0005] An outer rotor motor, the outer rotor motor comprises a rotor and a shell, the shell is fixed on the rotor, and a fixing shaft is arranged on the shell;

[0006] A fan blade, the fan blade is provided with a mounting hole;

[0007] The fixing shaft can be inserted into the mounting hole to complete the fixation of the fan blade and the outer rotor motor.

[0008] The fan blade comprises a mounting portion and a plurality of blades, all the blades are uniformly distributed on the circumferential side of the mounting portion, and the mounting hole is arranged on the mounting portion.

[0009] A first guide groove is arranged on the mounting portion, a first end of the first guide groove is communicated with the mounting hole, and an end portion of the fixing shaft can slide into the mounting hole under the guidance of the first guide groove.

[0010] A second end of the first guide groove forms an opening at the edge of the mounting portion.

[0011] From the direction of the rotational axis of the fan blade to the edge of the mounting portion, the depth of the first guide groove gradually decreases.

[0012] A reinforcing rib is arranged on the mounting portion, and when the circumferential side of the fixing shaft abuts against the reinforcing rib, the end portion of the fixing shaft is in the first guide groove or points to the first guide groove.

[0013] The number of the mounting holes is multiple, and all the mounting holes are uniformly distributed in at least one circle on the mounting portion with the rotating axis of the fan blade as the axis.

[0014] An annular groove is arranged on the mounting portion, all the mounting holes are arranged in the annular groove, and the cross-sectional area of the annular groove gradually decreases from the opening of the annular groove to the bottom surface of the annular groove.

[0015] The fan assembly further comprises a connecting shaft, a fixing hole is arranged on the shell, the first end of the connecting shaft extends into the fixing hole and is arranged in cooperation with the fixing hole, and the second end of the connecting shaft extends into the mounting hole and is arranged in cooperation with the mounting hole.

[0016] The first end of the connecting shaft is provided with a first threaded segment, and the fixing hole is provided with a threaded structure matched with the first threaded segment; and / or the second end of the connecting shaft is provided with a second threaded segment, and the second end of the connecting shaft is locked and matched with a locking piece having a threaded structure after protruding out of the mounting hole.

[0017] The number of the fixing shafts is multiple, the mounting holes correspond to the fixing shafts one by one, and all the fixing shafts are uniformly distributed in at least one circle on the shell with the rotating axis of the outer rotor motor as the axis.

[0018] The outer rotor motor further comprises a base, and the rotor and the shell are rotatably arranged on the base.

[0019] The mounting portion is provided with a heat dissipation hole.

[0020] A heat exchange device comprises the fan assembly.

[0021] The fan assembly and the heat exchange device provided by the application have the mounting hole arranged on the fan blade and can be mounted in cooperation with the fixing shaft on the shell of the outer rotor motor, thereby overcoming the assembly difficulty between the outer rotor motor and the fan blade in the prior art, the guide structure and the reinforcing rib are arranged on the fan blade, and no shaft sleeve assembly is needed in the middle, the assembly efficiency of the centrifugal fan blade and the outer rotor motor is improved, the use cost of the outer rotor motor is reduced, the fan blade is driven by the outer rotor motor, and noise is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 A sectional view of the fan assembly of the embodiment provided by the application;

[0023] Fig. 2 A structural schematic view of the fan blade of the embodiment provided by the application;

[0024] Fig. 3A sectional view of an outer rotor motor of an embodiment provided by the present application;

[0025] Fig. 4 A structural schematic view of an outer rotor motor of an embodiment provided by the present application;

[0026] In the figure:

[0027] 12, housing; 13, fixed shaft; 2, fan blade; 21, mounting hole; 22, mounting portion; 23, blade; 24, first guide groove; 25, reinforcing rib; 26, annular groove; 3, connecting shaft. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0029] The outer rotor motor in the prior art, although the rotor is arranged outside the stator, still outputs by a single output shaft, and a bearing or other structure is arranged between the housing and the rotor to support the rotor and / or the fan blade. In order to overcome the problem of difficult assembly between the outer rotor motor and the fan blade, the present application provides a fan assembly as shown in the figure, which comprises an outer rotor motor, the outer rotor motor comprising a rotor (the rotor is inside a housing 12, not shown in the figure) and a housing 12, the housing 12 being fixed to the rotor, and the housing 12 being provided with a fixed shaft 13; a fan blade 2, the fan blade 2 being provided with a mounting hole 21; the fixed shaft 13 being capable of extending into the mounting hole 21 to complete the fixation of the fan blade 2 and the outer rotor motor. That is, the housing 12 and the rotor of the existing outer rotor motor are fixed, so that the housing 12 can also rotate together with the rotor, and the fixed shaft 13 is arranged on the housing 12 and directly fixes and drives the fan blade 2, the motor can directly drive the fan blade 2 to rotate, without the need for a shaft sleeve assembly, effectively improving the assembly efficiency between the outer rotor motor and the fan blade 2, and reducing the cost of cooperation between the outer rotor motor and the fan blade 2. At the same time, compared with the existing indoor ceiling machine using an inner rotor motor, the reliability of the rotation of the fan blade 2 can be effectively ensured, and the noise can be effectively reduced. Figs. 1 to 4 Preferably, the fixed shaft 13 is on the end face of the housing 12.

[0030]

[0031] ​The fan blade 2 comprises a mounting portion 22 and a plurality of blades 23, all of which are uniformly distributed on the peripheral side of the mounting portion 22, and the mounting hole 21 is arranged on the mounting portion 22. Preferably, the thickness of the mounting portion 22 is smaller than the size of the blade 23 in the thickness direction of the mounting portion 22, so that the outer rotor motor part can be partially or entirely accommodated inside the fan blade 2, further reducing the size of the fan assembly.

[0032] The mounting portion 22 is provided with a first guide groove 24, the first end of the first guide groove 24 is communicated with the mounting hole 21, and the end of the fixed shaft 13 can slide into the mounting hole 21 under the guidance of the first guide groove 24. When the fan blade 2 is mounted on the outer rotor motor, the end of the fixed shaft 13 slides on the surface of the mounting portion 22, and when the fixed shaft 13 slides into the first guide groove 24, it can directly slide into the mounting hole 21 along the first guide groove 24, avoiding the problem of low assembly efficiency caused by constantly groping for the position of the fixed shaft 13 during manual installation.

[0033] The second end of the first guide groove 24 is open at the edge of the mounting portion 22, and the operator can directly slide the fixed shaft 13 into the first guide groove 24 from the opening, and then move the fan blade 2 along the first guide groove 24, so that the fixed shaft 13 is finally matched with the mounting hole 21.

[0034] From the direction of the rotating axis of the fan blade 2 to the edge of the mounting portion 22, the depth of the first guide groove 24 gradually decreases, and by increasing the depth, only a point force is needed during assembly, and the fixed shaft 13 can automatically slide into the mounting hole 21 along the deep direction of the first guide groove 24, which provides convenience for the operation of the employees on the production line, further reduces the labor cost, and increases the assembly efficiency.

[0035] The mounting portion 22 is provided with a reinforcing rib 25, and when the peripheral side of the fixed shaft 13 abuts against the reinforcing rib 25, the end of the fixed shaft 13 is in the first guide groove 24 or points to the first guide groove 24. The reinforcing rib 25 not only increases the strength of the fan blade 2, but also is designed on the same surface as the straight groove trace, which can further facilitate the assembly of the fixed shaft 13 of the outer rotor motor and the fan blade 2, and the fixed shaft 13 can move into the first guide groove 24 more quickly during assembly, enhancing the assembly efficiency of the employees on the production line. The first guide groove 24 is located at one edge of the opening on the surface of the mounting portion 22, which is protruded away from the mounting portion 22 to form the reinforcing rib 25.

[0036] The number of the mounting holes 21 is multiple, and all the mounting holes 21 are uniformly distributed in at least one circle on the mounting portion 22 with the rotating axis of the fan blade 2 as the axis. The multiple mounting holes 21 facilitate cooperation with multiple fixing shafts 13, thereby increasing the driving effect on the fan blade 2 and ensuring the reliability of the fan assembly.

[0037] The mounting portion 22 is provided with an annular groove 26, all the mounting holes 21 are arranged in the annular groove 26, and the cross-sectional area of the annular groove 26 gradually decreases from the opening of the annular groove 26 to the bottom surface of the annular groove 26. The gradual change of the cross-sectional area of the annular groove 26 can make the end of the fixing shaft 13 more conveniently slide into the mounting hole 21, especially when the end of the fixing shaft 13 is in the annular groove 26, the assembler can directly rotate the fan blade 2 without moving the fan blade 2, thereby increasing the assembly efficiency.

[0038] The fan assembly further comprises a connecting shaft 3, the shell 12 is provided with a fixing hole, the first end of the connecting shaft 3 extends into the fixing hole and is arranged in cooperation with the fixing hole, and the second end of the connecting shaft 3 extends into the mounting hole 21 and is arranged in cooperation with the mounting hole 21. That is, the fixing shaft 13 on the outer rotor motor is arranged in a split manner, which facilitates the manufacture of the shell 12 of the outer rotor motor, and also enables the fan blade 2 and the outer rotor motor to be disassembled when the fan blade 2 or the outer rotor motor needs to be replaced.

[0039] The first end of the connecting shaft 3 is provided with a first threaded section, the fixing hole is provided with a threaded structure matched with the first threaded section; and / or, the second end of the connecting shaft 3 is provided with a second threaded section, and the second end of the connecting shaft 3 is locked and matched with a locking piece having a threaded structure after protruding out of the mounting hole 21. The threads of the first threaded section and the threads of the second threaded section can be arranged to be opposite to the rotating direction of the fan blade 2, thereby achieving the purpose of automatic locking. Preferably, the locking piece is a nut.

[0040] The number of the fixing shafts 13 is multiple, the mounting holes 21 correspond to the fixing shafts 13 one by one, and all the fixing shafts 13 are uniformly distributed in at least one circle on the shell 12 with the rotating axis of the outer rotor motor as the axis, thereby increasing the fixing effect between the outer rotor motor and the fan blade 2.

[0041] The outer rotor motor further comprises a base, and the rotor and the shell 12 are rotatably arranged on the base. The fan assembly can be fixed with a pre-set mechanism through the base.

[0042] The mounting portion 22 is provided with heat dissipation holes.

[0043] A heat exchange device comprising the above fan assembly.

[0044] The above embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A fan assembly, characterized by: The fan assembly comprises an outer rotor motor, a fan blade and a connecting shaft. The outer rotor motor comprises a rotor and a shell (12) fixed to the rotor, and a fixing shaft (13) is arranged on the shell (12). The fan blade (2) is provided with a mounting hole (21). The fixing shaft (13) can extend into the mounting hole (21) to complete the fixation of the fan blade (2) and the outer rotor motor. The fan blade (2) comprises a mounting portion (22) and a plurality of blades (23), all the blades (23) are uniformly distributed on the circumferential side of the mounting portion (22), and the mounting hole (21) is arranged on the mounting portion (22). A first guide groove (24) is arranged on the mounting portion (22), the first end of the first guide groove (24) is communicated with the mounting hole (21), and the end of the fixing shaft (13) can slide into the mounting hole (21) under the guidance of the first guide groove (24). The second end of the first guide groove (24) forms an opening at the edge of the mounting portion (22). From the direction of the rotating axis of the fan blade (2) to the edge of the mounting portion (22), the depth of the first guide groove (24) gradually decreases. A reinforcing rib (25) is arranged on the mounting portion (22), and when the circumferential side of the fixing shaft (13) abuts against the reinforcing rib (25), the end of the fixing shaft (13) is in the first guide groove (24) or points to the first guide groove (24). The fan assembly further comprises a connecting shaft (3), a fixing hole is arranged on the shell (12), the first end of the connecting shaft (3) extends into the fixing hole and is matched with the fixing hole, and the second end of the connecting shaft (3) extends into the mounting hole (21) and is matched with the mounting hole (21). A first threaded section is arranged at the first end of the connecting shaft (3), and a threaded structure matched with the first threaded section is arranged in the fixing hole; and / or a second threaded section is arranged at the second end of the connecting shaft (3), and a locking piece with a threaded structure is locked and matched with the second end of the connecting shaft (3) after the second end of the connecting shaft (3) protrudes out of the mounting hole (21).

2. The fan assembly of claim 1, wherein: The number of the mounting holes (21) is multiple, and all the mounting holes (21) are uniformly distributed on the mounting portion (22) in at least one circle with the rotating axis of the fan blade (2) as the axis.

3. The fan assembly of claim 2, wherein: An annular groove (26) is arranged on the mounting portion (22), all the mounting holes (21) are arranged in the annular groove (26), and the cross-sectional area of the annular groove (26) gradually decreases from the opening of the annular groove (26) to the bottom surface of the annular groove (26).

4. The fan assembly of claim 1, wherein: The number of the fixing shafts (13) is multiple, the mounting hole (21) corresponds to the fixing shaft (13) one by one, and all the fixing shafts (13) are uniformly distributed on the shell (12) in at least one circle with the rotating axis of the outer rotor motor as the axis.

5. The fan assembly of claim 1, wherein: The outer rotor motor further comprises a base, and the rotor and the shell (12) are rotatably arranged on the base.

6. The fan assembly of claim 1, wherein: The mounting portion (22) is provided with a heat dissipation hole.

7. A heat exchange apparatus, characterized by: The fan assembly of any one of claims 1 to 6.

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