Stator cooling mechanism of centrifugal fan

Abstract

The utility model discloses a stator cooling mechanism of a centrifugal fan. The stator cooling mechanism comprises a centrifugal fan body and a supporting base fixedly installed on the bottom face of the centrifugal fan body. A driving motor is arranged at the center position of the rear portion of the centrifugal fan body. The centrifugal fan is characterized in that a flow guide cavity is formed in the centrifugal fan body, and an air inlet groove hole is formed in the center of the front face of the centrifugal fan body; wherein cooling mechanisms are arranged on the upper side and the lower side of the centrifugal fan body, and each cooling mechanism comprises a cooling flow guide pipe. According to the stator cooling mechanism of the centrifugal fan, the centrifugal fan body is driven by the driving motor to work so as to achieve the effect of generating high-pressure gas for air outlet, and the gas can enter the heat exchange arc plate through the cooling flow guide pipe by rotating the closed ring body so as to cool the stator of the corresponding driving motor; and meanwhile, the opened transmission slotted holes can dissipate heat for the whole driving motor, so that the working service life of the driving motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a stator cooling mechanism for a centrifugal fan. Background Technique

[0002] The centrifugal fan belongs to one type of fans, which mainly consists of an impeller, a casing, a coupling, and a shaft. The impeller is the main working component for generating wind pressure and transmitting energy; the casing is mainly used to introduce and discharge gases, and at the same time convert part of the kinetic energy of the gases into pressure energy; the coupling is used to connect the motor and the fan. For high-power fans driven by a motor, the load of the motor is relatively large and the working time is relatively long. Therefore, it is necessary to dissipate heat from the stator inside the motor to ensure the working life of the motor.

[0003] A heat dissipation structure for a DC motor of a centrifugal fan disclosed in the publication number CN214479975U transfers the heat generated by the high-speed rotation of the rotor inside the motor to the end cover, and transfers the heat generated by the transistors on the circuit board to the annular boss inside the end cover through thermal conductive silicone. Finally, the heat absorbed by the end cover and the annular boss is dissipated into the air through the grooves on the outer side of the end cover, enabling the heat inside the motor to be dissipated in time, effectively controlling the temperature inside the high-speed rotating motor, and avoiding the damage of the motor structure due to excessive temperature.

[0004] However, the following problems still exist in the actual use of the heat dissipation mechanism of the above-mentioned motor for centrifugal fans. Although the heat is transferred to the thermal conductive silicone and subsequent heat dissipation components, this type of heat dissipation mechanism still uses the method of heat conduction. During the conduction process, it often cannot keep up with the heat generation amount and cannot transfer the dissipated heat in a timely and efficient manner. At the same time, this type of heat dissipation mechanism usually cannot dissipate heat in a targeted manner, resulting in a large accumulation of thermal energy generated by electromagnetism, reducing the heat dissipation efficiency and affecting the service life of the motor.

[0005] Therefore, we propose a stator cooling mechanism for a centrifugal fan to solve the problems mentioned above. Content of the Utility Model

[0006] The purpose of the utility model is to provide a stator cooling mechanism for a centrifugal fan to solve the problems that the existing heat dissipation mechanism of the motor of the centrifugal fan still uses the method of heat conduction, often cannot keep up with the heat generation amount during the conduction process, cannot transfer the dissipated heat in a timely and efficient manner, and at the same time, this type of heat dissipation mechanism usually cannot dissipate heat in a targeted manner, resulting in a large accumulation of thermal energy generated by electromagnetism, reducing the heat dissipation efficiency and affecting the service life of the motor.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A stator cooling mechanism for a centrifugal fan, comprising a centrifugal fan body, and a support base fixedly installed on the bottom surface of the centrifugal fan body;

[0008] A drive motor is arranged at the central position behind the centrifugal fan body, and the rear end of the bottom surface of the drive motor is fixedly connected to the top end of the support base;

[0009] It further includes: A diversion cavity is opened inside the centrifugal fan body, and an air inlet slot hole is opened at the central position on the front surface of the centrifugal fan body;

[0010] Among them, cooling mechanisms are arranged on the upper and lower sides of the centrifugal fan body, and the cooling mechanism includes a cooling diversion pipe.

[0011] Preferably, a diversion rotating fan is rotatably arranged at the central position inside the diversion cavity of the centrifugal fan body, and an air outlet slot hole is opened at the top right end of the centrifugal fan body, and the centrifugal fan body attracts air through the air inlet slot hole into the interior of the diversion cavity by the rotation of the diversion rotating fan, and discharges it to the outside through the air outlet slot hole.

[0012] Preferably, a drive rotating shaft is fixedly arranged at the central position inside the diversion rotating fan of the centrifugal fan body, and the rear end of the drive rotating shaft is rotatably connected to the rear part inside the centrifugal fan body through a bearing, and the rear end of the drive rotating shaft is fixedly connected to the front end of the drive shaft of the drive motor, and the drive rotating shaft and the diversion rotating fan are driven to rotate by the operation of the drive motor.

[0013] Preferably, heat exchange arc plates are fixedly arranged on both the upper and lower sides of the outside of the drive motor, and heat exchange slot holes are opened at the middle parts of the outer sides of the upper and lower heat exchange arc plates, and the heat exchange arc plates are used to exchange and transfer the heat of the stator inside the drive motor, and the outside of both the upper and lower heat exchange arc plates is connected to the rear end of the cooling diversion pipe included in the cooling mechanism.

[0014] Preferably, the cooling diversion pipes included in the cooling mechanism are connected to the upper and lower sides inside the centrifugal fan body in a symmetric manner on the left and right sides, and the front ends of the symmetrically arranged cooling diversion pipes are connected to the diversion cavity inside the centrifugal fan body, and the cooling mechanism includes a closed ring body, and flow-through slot holes are opened on both the upper and lower sides inside the closed ring body.

[0015] Preferably, the closed ring body included in the cooling mechanism is rotatably arranged inside the centrifugal fan body, and the flow-through slot holes opened on both the upper and lower sides of the closed ring body are correspondingly distributed with the front ends of the symmetrically arranged cooling diversion pipes, and after the flow-through slot holes and the front ends of the cooling diversion pipes are misaligned by rotating the closed ring body, the cooling diversion pipes can be blocked and closed.

[0016] Preferably, transfer slots are opened at equal angles at the inner rear of the centrifugal fan body, and a closing disk is rotatably arranged at the center position of the back side of the centrifugal fan body, and the closing disk is correspondingly rotatably arranged behind the transfer slots opened at equal angles, and the transfer slots are closed and opened by rotating the closing disk, and at the same time, the transfer slots opened at equal angles are directly opposite to the drive motor at the rear of the centrifugal fan body.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the stator cooling mechanism of the centrifugal fan drives the centrifugal fan body to work through the driving motor, so as to achieve the effect of producing high-pressure gas outlet, and the gas can enter the heat exchange arc plate through the cooling guide pipe by rotating the closed ring body, so as to dissipate heat to the stator of the corresponding driving motor, and at the same time, the opened transfer slot can dissipate heat for the entire driving motor, thereby improving its working service life. The specific contents are as follows:

[0018] 1. The driving motor drives the guide fan inside the guide cavity to rotate through the driving shaft, and the guide fan draws air through the air inlet slot, and after the gas enters the guide cavity, it continues to be pressurized by the rotating guide fan, so that it can be discharged through the air outlet slot provided on the upper right side of the centrifugal fan body, so as to achieve the effect of producing high-pressure gas outlet;

[0019] 2. The rotating closed ring body rotates inside the centrifugal fan body, and moves to the front ends of the cooling guide pipes on the upper and lower sides through the circulation slots. Then, part of the gas flowing inside the guide cavity enters the cooling guide pipe and is continuously transported to the heat exchange arc plate that passes through the rear end. The heat of the stator inside the drive motor is exchanged through the gas flow inside the heat exchange arc plate and discharged to the outside through the heat exchange slots, so as to achieve the heat dissipation effect for the corresponding stator inside the drive motor body;

[0020] 3. The closed disk on the back of the centrifugal fan body is rotated to open the previously covered transfer slot hole to expose it, and then the gas flowing in the guide cavity flows backward through the exposed transfer slot hole, so as to dissipate heat for the drive motor arranged on the back of the centrifugal fan body and improve its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the installation structure of the drive motor of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the guide fan of the utility model;

[0024] Figure 4For the present utility model Figure 3 Schematic enlarged structure diagram at position A in

[0025] Figure 5 Schematic installation structure diagram of the closing disc body of the present utility model;

[0026] Figure 6 Schematic installation structure diagram of the heat exchange arc plate of the present utility model.

[0027] In the figure: 1, centrifugal fan body; 2, support base; 3, drive motor; 4, diversion cavity; 5, air inlet slot hole; 6, cooling diversion pipe; 7, diversion rotating fan; 8, air outlet slot hole; 9, drive rotating shaft; 10, heat exchange arc plate; 11, heat exchange slot hole; 12, closed ring body; 13, flow through slot hole; 14, transfer slot hole; 15, closing disc body. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-6 , the present utility model provides the following technical solutions:

[0030] Embodiment 1: To illustrate the working principle of the centrifugal fan body 1, therefore, in this embodiment, through the following technical solutions, a stator cooling mechanism of a centrifugal fan includes a centrifugal fan body 1 and a support base 2 fixedly installed on the bottom surface of the centrifugal fan body 1; a diversion cavity 4 is opened inside the centrifugal fan body 1, and an air inlet slot hole 5 is opened at the center position on the front surface of the centrifugal fan body 1; a diversion rotating fan 7 is rotatably arranged at the center position inside the diversion cavity 4 of the centrifugal fan body 1, and an air outlet slot hole 8 is opened at the top right of the centrifugal fan body 1, and the centrifugal fan body 1 attracts air into the inside of the diversion cavity 4 through the air inlet slot hole 5 by the rotation of the diversion rotating fan 7 and discharges it to the outside through the air outlet slot hole 8;

[0031] A drive motor 3 is arranged at the center position at the rear of the centrifugal fan body 1, and the rear end of the bottom surface of the drive motor 3 is fixedly connected to the top end of the support base 2; a drive rotating shaft 9 is fixedly arranged at the center position inside the diversion rotating fan 7 of the centrifugal fan body 1, and the rear end of the drive rotating shaft 9 is rotatably connected to the inside rear of the centrifugal fan body 1 through a bearing, and the rear end of the drive rotating shaft 9 is fixedly connected to the front end of the drive shaft of the drive motor 3, and the drive rotating shaft 9 and the diversion rotating fan 7 are driven to rotate by the operation of the drive motor 3;

[0032] As Figures 1-3 shown, first, the drive shaft 9 of the guide vane rotating fan 7 in the internal guide flow cavity 4 of the centrifugal fan body 1 is connected to the rear drive motor 3. The centrifugal fan body 1 and the drive motor 3 are both fixedly installed above the support base 2, thereby improving the stability of the centrifugal fan body 1 and the drive motor 3 during operation through the support base 2;

[0033] Furthermore, when the drive motor 3 operates, it drives the fixedly connected drive shaft 9 and the guide vane rotating fan 7 inside the guide flow cavity 4 to rotate through the output shaft. Then, the rotating guide vane rotating fan 7 attracts air through the air inlet slot hole 5 opened on the front of the centrifugal fan body 1, and continues to pressurize the air through the rotating guide vane rotating fan 7 after the air enters the guide flow cavity 4, so as to discharge it through the air outlet slot hole 8 opened at the upper right end of the centrifugal fan body 1, in order to achieve the effect of generating high-pressure air outlet.

[0034] Embodiment 2: In order to solve the problems existing in the existing centrifugal fan body 1 during use, therefore, in this embodiment, through the following technical solutions, wherein, cooling mechanisms are arranged on the upper and lower sides of the centrifugal fan body 1, and the cooling mechanisms include cooling diversion pipes 6; heat exchange arc plates 10 are fixedly arranged on the upper and lower sides of the outside of the drive motor 3, and heat exchange slot holes 11 are opened in the middle of the outer sides of the upper and lower heat exchange arc plates 10. The heat exchange arc plates 10 are used to exchange and transfer the heat of the stator inside the drive motor 3, and the outer sides of the upper and lower heat exchange arc plates 10 are both connected to the rear ends of the cooling diversion pipes 6 included in the cooling mechanisms;

[0035] The cooling diversion pipes 6 included in the cooling mechanisms are connected to the upper and lower sides inside the centrifugal fan body 1 in a symmetric manner on the left and right sides, and the front ends of the symmetrically arranged cooling diversion pipes 6 are connected to the guide flow cavity 4 inside the centrifugal fan body 1. The cooling mechanisms include a closed ring body 12, and flow through slot holes 13 are opened on the upper and lower sides inside the closed ring body 12;

[0036] The closed ring body 12 included in the cooling mechanisms is rotatably arranged inside the centrifugal fan body 1. The flow through slot holes 13 opened on the upper and lower sides of the closed ring body 12 are correspondingly distributed with the front ends of the symmetrically arranged cooling diversion pipes 6. After the flow through slot holes 13 and the front ends of the cooling diversion pipes 6 are misaligned by rotating the closed ring body 12, the cooling diversion pipes 6 can be blocked and closed;

[0037] Transfer slots 14 are equiangularly arranged at the rear inside of the centrifugal fan body 1, and a closing disc 15 is rotatably arranged at the center of the back surface of the centrifugal fan body 1. Moreover, the closing disc 15 is correspondingly rotatably arranged behind the equiangularly arranged transfer slots 14. By rotating the closing disc 15, the transfer slots 14 are closed and opened. At the same time, the equiangularly arranged transfer slots 14 are directly opposite to the driving motor 3 behind the centrifugal fan body 1;

[0038] As Figures 3-4 shown, when it is necessary to dissipate heat from the driving motor 3 and its internal stator behind the centrifugal fan body 1, first, manually rotate the lever arranged at the front end of the closed ring 12 inside the centrifugal fan body 1, so that after the closed ring 12 rotates inside the centrifugal fan body 1, the flow-through slots 13 opened on both the upper and lower sides of the closed ring 12 correspondingly move to the front ends of the upper and lower cooling diversion pipes 6, so as to connect the cooling diversion pipes 6 and the diversion cavity 4 in a through manner. Then, part of the gas flowing inside the diversion cavity 4 enters the inside of the cooling diversion pipe 6 and is continuously transported to the heat exchange arc plate 10 penetrated at its rear end. The heat of the stator inside the driving motor 3 is exchanged through the gas flow inside the heat exchange arc plate 10 and is discharged outward through the heat exchange slots 11 opened on the outside of the heat exchange arc plate 10, so as to achieve the effect of dissipating heat from the corresponding stator inside the driving motor body 3;

[0039] As Figure 2 、 Figures 5-6 shown, when it is necessary to dissipate heat from the overall driving motor 3, only need to manually rotate the closing disc 15 rotatably arranged on the back surface of the centrifugal fan body 1. After it rotates 45 degrees, the transfer slots 14 previously shielded at the rear inside of the centrifugal fan body 1 are opened, so that the equiangularly distributed transfer slots 14 are all in an exposed state. Then, when the centrifugal fan body 1 is working, the gas flowing in its diversion cavity 4 flows backward through the exposed transfer slots 14, so as to dissipate heat from the driving motor 3 arranged on the back surface of the centrifugal fan body 1 and improve its working service life.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A stator cooling mechanism for a centrifugal fan, comprising a centrifugal fan body (1), and a support base (2) fixedly mounted on the bottom surface of the centrifugal fan body (1); A drive motor (3) is arranged at the rear center position of the centrifugal fan body (1), and the rear end of the bottom surface of the drive motor (3) is fixedly connected to the top end of the support base (2); It is characterized in that Also includes: A flow guide cavity (4) is provided inside the centrifugal fan body (1), and an air inlet slot (5) is provided at the center of the front face of the centrifugal fan body (1); Wherein, cooling mechanisms are provided on the upper and lower sides of the centrifugal fan body (1), and the cooling mechanisms include cooling guide pipes (6).

2. The stator cooling mechanism of a centrifugal fan according to claim 1, characterized in that: A flow guide rotor (7) is rotatably arranged at the center of the flow guide cavity (4) inside the centrifugal fan body (1), and an air outlet slot (8) is provided at the top right side of the centrifugal fan body (1). The centrifugal fan body (1) draws air into the flow guide cavity (4) through the air inlet slot (5) through the rotation of the flow guide rotor (7), and discharges the air to the outside through the air outlet slot (8).

3. The stator cooling mechanism of a centrifugal fan according to claim 2, characterized in that: A driving shaft (9) is fixedly arranged at the inner center position of the guide fan (7) inside the centrifugal fan body (1), and the rear end of the driving shaft (9) is rotatably connected to the inner rear of the centrifugal fan body (1) through a bearing, and the rear end of the driving shaft (9) is fixedly connected to the front end of the driving shaft of the driving motor (3), and the driving motor (3) is driven to rotate the driving shaft (9) and the guide fan (7).

4. The stator cooling mechanism of a centrifugal fan according to claim 1, characterized in that: Heat exchange arc plates (10) are fixedly arranged on both upper and lower sides of the exterior of the drive motor (3), and heat exchange slots (11) are provided in the middle of the exterior of the heat exchange arc plates (10) on both upper and lower sides, and the heat exchange arc plates (10) are used to exchange and transfer heat from the stator inside the drive motor (3), and the exterior of the heat exchange arc plates (10) on both upper and lower sides are connected to the rear end of the cooling guide pipe (6) included in the cooling mechanism.

5. The stator cooling mechanism of a centrifugal fan according to claim 4, characterized in that: The cooling mechanism comprises a cooling guide pipe (6) which is connected to the upper and lower sides of the centrifugal fan body (1) in a symmetrical manner on both sides, and the front end of the symmetrically arranged cooling guide pipe (6) is connected to the guide cavity (4) inside the centrifugal fan body (1), and the cooling mechanism comprises a closed ring body (12), and the closed ring body (12) is provided with flow slots (13) on both the upper and lower sides.

6. The stator cooling mechanism of a centrifugal fan according to claim 5, characterized in that: The cooling mechanism comprises a closed ring body (12) which is rotatably arranged inside the centrifugal fan body (1), and the flow slots (13) provided on the upper and lower sides of the closed ring body (12) are arranged in a distributed manner corresponding to the front end of a symmetrically arranged cooling guide pipe (6), and the closed ring body (12) is rotated so that the flow slots (13) and the front end of the cooling guide pipe (6) are misaligned, so that the cooling guide pipe (6) is blocked and closed.

7. The stator cooling mechanism of a centrifugal fan according to claim 1, characterized in that: The centrifugal fan body (1) has a transmission slot (14) formed at an equal angle at the rear of the inner part, and a closing disc (15) is rotatably provided at the center of the back of the centrifugal fan body (1), and the closing disc (15) is rotatably provided at the rear of the transmission slot (14) formed at an equal angle, and the transmission slot (14) is closed and opened by rotating the closing disc (15), and the transmission slot (14) formed at an equal angle is directly opposite to the drive motor (3) at the rear of the centrifugal fan body (1).

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