Novel noise reduction and shock absorption fan

Abstract

The utility model discloses a novel noise reduction and shock absorption fan. The novel noise reduction and shock absorption fan comprises a fan volute and a fan impeller which is located in the fan volute and can rotate. A motor shaft is arranged in the center of the fan impeller, and the top end of the motor shaft is used for being connected with an external driving motor; a balance support is further arranged at the top end of the fan volute, and a balance mechanism is arranged in the balance support and used for bearing torsion generated when the motor shaft is driven by the driving motor to rotate. The fan has the beneficial effects that the motor shaft is not directly connected with the fan impeller, the middle of the motor shaft is further connected with the balance mechanism in the balance support, and when the motor shaft rotates in a bearing in the balance mechanism, due to the fact that damping rubber is arranged outside the motor shaft, the motor shaft can rotate at a high speed; and the damping rubber can eliminate vibration noise generated by the motor shaft, so that the effects of noise reduction and shock absorption are achieved, and the axial balance degree can be controlled.

Description

Technical Field

[0001] This application relates to the technical field of fans, and particularly to a new type of noise-reducing and shock-absorbing fan. Background Art

[0002] A new type of noise-reducing and shock-absorbing fan is a fan that can perform noise reduction and shock absorption during the operation of the fan. Since the fans in the existing market are fixed in a shoulder-carrying mode during installation, that is, a key connection is directly made between the impeller inside the fan and the driving motor of the fan. During operation, the torque of the fan is borne by the motor shaft of the driving motor. When the impeller rotates, there is no balancing mechanism to balance the motor shaft of the motor, so it is not easy to control the axial balance, and thus the service life of the motor bearing is very short.

[0003] At the same time, the driving motor shaft of the motor generally has a shaft diameter of 12 - 14 mm and a longer length, and thus is easily affected by the rotational centrifugal force, resulting in serious bending deformation of the motor shaft. Summary of the Invention

[0004] One of the purposes of this application is to provide a new type of noise-reducing and shock-absorbing fan.

[0005] To achieve the above object, the technical solution adopted in this application is: a new type of noise-reducing and shock-absorbing fan, including a fan volute and a fan impeller that can rotate inside it; a motor shaft is arranged at the central position of the fan impeller, and the top of the motor shaft is used to connect with an external driving motor.

[0006] A balance bracket is further arranged at the top of the fan volute, and a balance mechanism is arranged inside the balance bracket to bear the torque of the motor shaft driven by the driving motor to rotate, so as to control the balance degree of the axial rotation of the motor shaft.

[0007] Preferably, the balance mechanism includes damping rubber and a bearing. The bearing is sleeved with damping rubber on the outside, and a through motor shaft is arranged in the middle of the damping rubber.

[0008] Preferably, the balance bracket includes a mounting ring, a fixing bracket, and a fastening bolt. The mounting ring is engaged with the outside of the damping rubber, and 3 fixing brackets are evenly distributed on its outside. A circular through-hole is arranged at the top of the fixing bracket, and the through-hole is used for the fastening bolt to pass through it and be installed between the outer wall of the fan volute. The fastening bolt can be any one of a fastening bolt or a fastening screw.

[0009] Preferably, the outer part of the damping rubber is provided with convex structures distributed at equal angles, the inner part of the mounting ring is provided with groove structures distributed at equal angles, and the convex structures on the outer part of the damping rubber are engaged with the groove structures on the inner side of the mounting ring.

[0010] Preferably, the fan impellers are distributed at equal angles in a ring shape, and the bottom of the fan impellers is arranged above the connecting plate, and the connecting plate is a rotating mechanism inside the fan volute.

[0011] Preferably, a heat dissipation mechanism is further arranged on the outer part of the damping rubber for dissipating the heat generated by the high-speed rotation of the motor shaft inside the bearing, and the shaft diameter of the motor shaft is 10 mm.

[0012] Preferably, the heat dissipation mechanism includes heat dissipation perforations and rubber convex columns. The heat dissipation perforations are distributed at equal angles in an arc shape on the outer wall of the damping rubber, and rubber convex columns are further arranged at the top end inside the damping rubber.

[0013] Preferably, a reserved perforation is further arranged on the outer part of the mounting ring, and when the mounting ring is engaged with the damping rubber, it penetrates through the heat dissipation perforations (41) on the outer part of the damping rubber.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows:

[0015] (1) The motor shaft is not directly connected to the fan impeller, and is also connected to the balance mechanism inside the balance bracket in the middle. When the motor shaft rotates in the bearing inside the balance mechanism, since the damping rubber is arranged on its outer part, when the motor shaft rotates at a high speed, the damping rubber can eliminate the vibration noise generated by the motor shaft, achieving the effects of noise reduction and vibration damping, and can also control the axial balance degree.

[0016] (2) A heat dissipation mechanism is further arranged inside the damping rubber. Therefore, when the bearing inside it rotates with the motor shaft to generate heat, heat dissipation can be carried out under the action of the heat dissipation mechanism, ensuring that the bearing service life will not be affected by overheating.

[0017] (3) The shaft diameter is changed to 10 mm to reduce the influence of the centrifugal force received, so that the motor shaft will not be severely bent and deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view structural schematic diagram of the fan of the present utility model.

[0019] Figure 2 It is the front view structural schematic diagram of the fan impeller, motor shaft and balance bracket of the present utility model.

[0020] Figure 3 This is a schematic diagram of the external structure of the balance direct internal balance mechanism of the present utility model arranged outside the motor shaft.

[0021] Figure 4 This is an exploded schematic diagram of the connection between the balance bracket and its internal balance mechanism of the present utility model.

[0022] Figure 5 This is a schematic diagram of the damping rubber structure of the present utility model.

[0023] Figure 6 This is a schematic diagram of the heat dissipation mechanism inside the damping rubber when viewed from below of the present utility model.

[0024] Figure 7 This is an enlarged schematic diagram of the balance bracket of the present utility model

[0025] In the figure: 1, fan volute; 2, balance bracket; 21, mounting ring; 22, fixed bracket; 23, fastening bolt; 24, reserved perforation; 3, fan impeller; 31, connecting plate; 4, damping rubber; 41, heat dissipation perforation; 42, rubber convex column; 5, motor shaft; 6, bearing. Specific embodiments

[0026] Next, in combination with specific embodiments, the present application will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0027] In the description of the present application, it should be noted that for orientation terms, such as terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present application 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 should not be construed as limiting the specific protection scope of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0029] One of the preferred embodiments of the present application is, as Figures 1 to 7 shown, a new type of noise reduction and shock absorption fan, including a fan volute 1 and a fan impeller 3 that can rotate inside it; a motor shaft 5 is arranged at the central position of the fan impeller 3, and the top of the motor shaft 5 is used to connect to an external driving motor;

[0030] At the top of the fan housing 1, a balance bracket 2 is further provided, and a balance mechanism is arranged inside the balance bracket 2, which is used to bear the torque of the motor shaft 5 driven by the driving motor to rotate, so as to control the balance degree of the axial rotation of the motor shaft 5.

[0031] It should be noted that, as Figures 2 to 4 shown, the balance mechanism includes a damping rubber 4 and a bearing 6. The damping rubber 4 is sleeved outside the bearing 6, and a through motor shaft 5 is arranged in the middle of the damping rubber 4;

[0032] Specifically, when the motor shaft 5 rotates inside the bearing 6, since the damping rubber 4 is sleeved outside the bearing 6, it can weaken the vibration and noise during the rotation of the motor shaft 5.

[0033] Furthermore, as Figure 3 and Figure 7 shown, the balance bracket 2 includes a mounting ring 21, a fixing bracket 22 and a fastening bolt 23. The mounting ring 21 is engaged with the outside of the damping rubber 4, and 3 fixing brackets 22 are distributed equiangularly on its outside. A circular perforation is arranged at the top of the fixing bracket 22, and the perforation is used for the fastening bolt 23 to pass through it and be installed with the outer wall of the fan housing 1. The fastening bolt 23 can be any one of a fastening bolt or a fastening screw;

[0034] Specifically, the position of the balance mechanism in the middle can be fixed through the mounting ring 21. The specific fixing method is to install screws between the fixing bracket 22 outside the mounting ring 21 and the fan housing 1 to fix the position of the mounting ring 21. Since the mounting ring 21 and the balance mechanism are engaged with each other, the effect of fixing the position of the balance mechanism can be completed.

[0035] In this embodiment, as Figures 3 to 4 shown, convex structures are arranged equiangularly on the outside of the damping rubber 4, and groove structures are arranged equiangularly inside the mounting ring 21. The convex structures on the outside of the damping rubber 4 are engaged with the groove structures on the inner side of the mounting ring 21;

[0036] Specifically, through the arrangement of the groove structure and the convex structure, it can ensure that the damping rubber 4 quickly performs the alignment and engagement work with the mounting ring 21.

[0037] Even further, as Figure 2 shown, the fan impellers 3 are arranged in an annular and equiangular distribution, and the bottom of the fan impellers 3 is arranged above the connecting plate 31, and the connecting plate 31 is a rotating mechanism inside the fan housing 1.

[0038] As a further preference of the present application, as Figures 5 - 7As shown, a heat dissipation mechanism is also provided outside the damping rubber 4 for dissipating the heat generated by the high-speed rotation of the motor shaft 5 inside the bearing 6. The shaft diameter of the motor shaft 5 is 10 mm;

[0039] Specifically, the heat generated by the rotation of the motor shaft 5 inside the bearing 6 can be discharged through the heat dissipation mechanism to avoid overheating.

[0040] Among them, as Figure 6 shown, the heat dissipation mechanism includes heat dissipation perforations 41 and rubber studs 42. The heat dissipation perforations 41 are distributed on the outer wall of the damping rubber 4 in an arc shape at equal angles, and rubber studs 42 are also provided at the top position inside the damping rubber 4;

[0041] Furthermore, as Figure 7 shown, a reserved perforation 24 is also provided outside the mounting ring 21. When it is engaged between the mounting ring 21 and the damping rubber 4, it penetrates through the heat dissipation perforations 41 on the outside of the damping rubber 4;

[0042] Specifically, when the bearing 6 is engaged with the damping rubber 4, the rubber studs 42 can reduce the contact area between the bearing 6 and the damping rubber 4. Combined with the mutual penetration between the heat dissipation perforations 41 and the reserved perforations 24, the contact area between the bearing 6 and the outside can be increased to achieve the effect of rapid heat dissipation.

[0043] The working principle of the present utility model is as follows: When assembling the entire fan, first, the fan impeller 3 needs to be snap-fitted and installed inside the fan volute 1. Then, take the bearing 6 and engage it with the internal engaging space of the damping rubber 4. Then, engage the bearing 6 with the outside of the motor shaft 5 in the middle of the fan impeller 3. Then, take the balance bracket 2 and engage the groove structure inside the mounting ring 21 in the middle with the convex structure outside the damping rubber 4, thereby completing the installation and engagement work of the mounting ring 21. Then, take an external screw and engage it with the circular perforation at the top of the fixed bracket 22 outside the mounting ring 21 for threaded installation with the fan housing 1, thereby completing the installation work of the entire fan. When the fan is used subsequently, connect the connecting end of the motor shaft 5 to an external driving motor, and the entire fan can be controlled to work;

[0044] When the fan is working, the external drive motor drives the motor shaft 5 to rotate. Since the top of the motor shaft 5 is connected to the fan impeller 3, it can drive the fan impeller 3 to rotate and blow air inside the fan volute 1. When the motor shaft 5 rotates, a balancing mechanism is provided outside it. Therefore, when it rotates, due to the setting of the damping rubber 4 in the balancing mechanism, it can weaken the vibration and noise generated by the motor shaft 5, achieving the effect of controlling the rotational balance of the motor shaft 5;

[0045] When the motor shaft 5 rotates inside the balancing mechanism, since the bearing 6 and the damping rubber 4 are only in contact through the rubber studs 42, the contact area is small. Combining with the mutual penetration of the reserved perforations 24 on the mounting ring 21 and the heat dissipation perforations 41, the effect of increasing the contact area with the external environment can be achieved, and the heat dissipation work can be completed.

[0046] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A novel noise-reducing and shock-absorbing fan, characterized in that, It includes a fan volute (1) and a fan impeller (3) that can rotate inside it; a motor shaft (5) is arranged at the central position of the fan impeller (3), and the top end of the motor shaft (5) is used to connect with an external driving motor; A balance bracket (2) is further arranged at the top end of the fan volute (1), and a balance mechanism is arranged inside the balance bracket (2) to bear the torque of the motor shaft (5) driven to rotate by the driving motor, so as to control the balance degree of the axial rotation of the motor shaft (5).

2. The novel noise-reducing and shock-absorbing fan according to claim 1, wherein: The balance mechanism includes a damping rubber (4) and a bearing (6). The damping rubber (4) is sleeved outside the bearing (6), and the motor shaft (5) passes through the middle of the damping rubber (4).

3. The novel noise-reducing and shock-absorbing fan according to claim 2, characterized in that: The balance bracket (2) includes a mounting ring (21), a fixed bracket (22) and a fastening bolt (23). The mounting ring (21) is engaged with the outside of the damping rubber (4), and three fixed brackets (22) are distributed equiangularly outside it. A circular perforation is arranged at the top end of the fixed bracket (22), and the perforation is used for the fastening bolt (23) to pass through it and be installed with the outer wall of the fan volute (1). The fastening bolt (23) can be any one of a fastening bolt or a fastening screw.

4. The novel noise-reducing and shock-absorbing blower according to claim 3, characterized in that: Convex structures are arranged equiangularly on the outside of the damping rubber (4), and groove structures are arranged equiangularly inside the mounting ring (21). The convex structures on the outside of the damping rubber (4) are engaged with the groove structures on the inner side of the mounting ring (21).

5. The novel noise-reducing and shock-absorbing blower according to claim 4, characterized in that: The fan impellers (3) are distributed equiangularly in a ring shape, and the bottom of it is arranged above a connecting plate (31). The connecting plate (31) is a rotating mechanism inside the fan volute (1).

6. The novel noise-reducing and shock-absorbing fan according to claim 5, characterized in that: A heat dissipation mechanism is further arranged on the outside of the damping rubber (4) for the heat dissipation work of the motor shaft (5) rotating at high speed inside the bearing (6). The shaft diameter of the motor shaft (5) is 10 mm.

7. The novel noise-reducing and shock-absorbing fan according to claim 6, characterized in that: The heat dissipation mechanism includes heat dissipation perforations (41) and rubber convex columns (42). The heat dissipation perforations (41) are distributed equiangularly in an arc shape on the outer wall of the damping rubber (4), and rubber convex columns (42) are also arranged at the top end position inside the damping rubber (4).

8. The novel noise-reducing and shock-absorbing blower according to claim 7, characterized in that: A reserved perforation (24) is further arranged on the outside of the mounting ring (21), and when the mounting ring (21) is engaged with the damping rubber (4), it penetrates through the heat dissipation perforations (41) on the outside of the damping rubber (4).

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