Motor driver with mixed flow wind wheel heat dissipation device

Abstract

The utility model discloses a motor driver with a mixed flow wind wheel radiating device, which comprises a driving unit and a radiating unit, the radiating unit comprises a radiator and a fan cover, the radiator is arranged between the driving unit and the fan cover and forms an air inlet, the fan cover is provided with an air deflector, and the air deflector can guide air to a motor shell and form an air outlet. According to the heat dissipation unit structure designed by the utility model, by optimizing the structural layout among the driving unit, the heat dissipation unit and the motor, the motor and the driving unit share one heat dissipation system, so that components such as a frequency converter shell, an electronic fan, a heat dissipation device and the like contained in a conventional driver are saved, and the production cost and the energy loss of the driver are reduced; the driver is smaller than a conventional backpack driver in appearance and size, an air duct does not need to pass through the interior of the driving unit by optimizing an air inlet of the driver, and therefore the driving unit can be arranged to be of a full-sealing structure, the protection grade of the driver is improved, and the service life of the driver is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor driver technical field, specifically is a motor driver with mixed flow wind wheel heat abstractor. BACKGROUND

[0002] At present, permanent magnet synchronous motor adopts back bearing in many occasions, namely, after changing the structure of traditional frequency converter, simple combination with motor can solve the problem of long distance wiring of motor and drive, but the overall structure is complex, occupies large space, the energy consumption of two independent heat dissipation systems of drive and motor is large, the production cost is high, and the popularization and application of permanent magnet synchronous motor are greatly influenced. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a motor driver with mixed flow wind wheel heat abstractor to solve the problem in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a motor driver with mixed flow wind wheel heat abstractor, including drive unit and heat dissipation unit, the heat dissipation unit includes radiator and wind cover, the radiator is arranged between the drive unit and the wind cover and forms the air inlet, the radiator is provided with the first annular mouth, one end of the wind cover is provided with the second annular mouth, the second annular mouth below is provided with mixed flow wind wheel and air deflector, the air deflector is fixedly arranged on the inner wall of the wind cover, the upper end of the air deflector is provided with the third annular mouth, the lower end of the air deflector is provided with the air outlet, the first annular mouth, the second annular mouth and the third annular mouth form the main air duct between the air inlet and the air outlet.

[0005] Preferably, the radiator comprises heat dissipation fins, and the heat dissipation fins are distributed along the circumference of the first annular mouth at intervals.

[0006] Preferably, the heat dissipation fins are in the shape of circular arc strips, and the heat dissipation fins are evenly distributed along the circumference of the first annular mouth at intervals.

[0007] Preferably, the air deflector is in the shape of a bowl, and the diameter of the third annular mouth is smaller than the diameter of the air outlet.

[0008] Preferably, the mixed flow wind wheel comprises a base plate and a fan blade, a sleeve for connecting with a rear output shaft of a motor is arranged at the center of the base plate, the fan blade is distributed along the circumference of the base plate at intervals, a wind guide ring is connected above the fan blade, and an air inlet ring is arranged on the wind guide ring.

[0009] Preferably, the lower edge of the wind cover is provided with a plurality of mounting holes.

[0010] Preferably, the driving unit comprises a shell, and the bottom plate of the shell is in contact with the heat dissipation fin.

[0011] Preferably, the driving unit further comprises a driving module and a driving circuit board, the driving module is arranged on the inner side of the bottom plate, the periphery of the inner side of the bottom plate is provided with a support column, and the driving circuit board is arranged above the driving module through the support column.

[0012] Preferably, the shell is provided with a power box on one side, is provided with a touch screen on the other side, and is provided with a wiring box on the top panel.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The specific structure of the heat dissipation unit of the utility model optimizes the structural layout among the driving unit, the heat dissipation unit and the motor, so that the motor and the driving unit share one heat dissipation system, the frequency converter shell, the electronic fan, the radiator and other components contained in the conventional driver are saved, the problem of high production cost is solved, in the aspect of energy saving, the driver of the utility model omits the matching heat dissipation system of the conventional driver, and the electric energy loss can be effectively reduced, and in the aspect of appearance size, the volume of the driver of the utility model is smaller than that of the conventional motor driver, the air duct does not need to pass through the inside of the driving unit through the optimization of the air inlet of the driver, so that the driving unit can be arranged as a fully-sealed structure, and the protection level can reach IP66. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the motor driver of the utility model;

[0016] Figure 2 It is an explosion schematic view of the motor driver of the utility model;

[0017] Figure 3 It is an internal structure schematic view of the motor driver of the utility model;

[0018] Figure 4 It is a structure schematic view of the cooperation of the radiator, the air baffle and the wind shield in the utility model;

[0019] Figure 5 It is a structure schematic view of the mixed flow wind wheel in the utility model;

[0020] Figure 6 It is a structure schematic view of the cooperation of the heat dissipation fin and the bottom plate of the shell of the driving unit in the utility model.

[0021] In the diagram: 1-Drive unit; 2-Heat dissipation unit; 3-Heat radiator; 4-Fan shroud; 5-First annular opening; 6-Second annular opening; 7-Mixed flow impeller; 8-Guide plate; 9-Third annular opening; 10-Outlet; 11-Main air duct; 12-Inlet; 14-Heat dissipation fins; 15-Chassis; 16-Fan blade; 17-Rear exhaust shaft; 18-Sleeve; 19-Guide ring; 20-Inlet ring; 21-Mounting hole; 22-Outer shell; 23-Base plate; 24-Drive module; 25-Drive circuit board; 26-Support column; 27-Power supply box; 28-Touch screen; 29-Gateway box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-6 As shown, a motor driver with a mixed-flow impeller cooling device includes a drive unit 1 and a cooling unit 2. The cooling unit 2 includes a radiator 3 and a fan shroud 4. The radiator 3 is disposed between the drive unit 1 and the fan shroud 4 and forms an air inlet 12. The radiator 3 is provided with a first annular opening 5. One end of the fan shroud 4 is provided with a second annular opening 6. A mixed-flow impeller 7 and a guide plate 8 are provided below the second annular opening 6. The guide plate 8 is fixedly disposed on the inner wall of the fan shroud 4. The upper end of the guide plate 8 is provided with a third annular opening 9. The lower end of the guide plate 8 is provided with an air outlet 10. A main air duct 11 is formed between the first annular opening 5, the second annular opening 6, and the third annular opening 9. The main air duct connects the air inlet 12 and the air outlet 10.

[0024] Furthermore, the radiator 3 includes heat dissipation fins 14, which are distributed at intervals along the circumference of the first annular opening 5.

[0025] The heat dissipation fins 14 can be shaped like arc strips and evenly distributed around the circumference of the first annular opening 5. By shaping the heat dissipation fins 14 into arc strips, the evenly distributed circumference of the heat sink forms a spiral shape, thereby increasing the surface area of ​​contact between the heat dissipation fins and the base plate of the drive unit. At the same time, it can increase the airflow path, thereby improving the heat dissipation efficiency.

[0026] like Figure 1 and 4As shown, the air guide plate 8 is bowl-shaped, and the diameter of the third annular opening 9 is smaller than the diameter of the air outlet 12. The bowl-shaped air guide plate 8 helps to optimize the airflow path, effectively reduce wind resistance and prevent airflow backflow. With the cooperation of the air guide plate 8 and the wind cover 4, the air blown radially out by the mixed flow fan wheel 7 is effectively guided to the motor housing, thereby improving the heat dissipation efficiency.

[0027] Furthermore, the mixed-flow impeller 7 includes a chassis 15 and fan blades 16. A sleeve 18 for connecting to the rear output shaft 17 of the motor is provided at the center of the chassis 15. The fan blades 16 are distributed at intervals along the circumference of the chassis 15. An air guide ring 19 is connected above the fan blades 16, and an air inlet ring 20 is provided on the air guide ring 19.

[0028] Furthermore, a plurality of mounting holes 21 are provided on the lower edge of the fan cover 4. The mounting holes 21 are used for connecting the fan cover 4 to the housing of the motor by bolts, so that the driver assembly is stably connected to the motor.

[0029] Furthermore, the drive unit 2 includes a housing 22, and the outer side of the base plate 23 of the housing 22 is in contact with the heat dissipation fins 14.

[0030] Furthermore, the drive unit 2 also includes a drive module 24 and a drive circuit board 25. The drive module 24 is installed on the inner side of the base plate 23. Support columns 26 are provided around the inner side of the base plate 23. The drive circuit board 25 is positioned above the drive module 24 via the support columns 26.

[0031] The heat sink 14 is in direct contact with the base plate 23. The heat sink base plate 23 is made of metal material and has good thermal conductivity, which can ensure that the heat generated by the drive module 24 can be quickly conducted to the heat sink 14. The support column 26 can ensure a stable connection between the drive circuit board 25 and the drive module 26, and at the same time facilitate heat dissipation and maintenance.

[0032] Furthermore, a power supply box 27 is provided on one side of the housing 22, a touch screen 28 is provided on the other side of the housing 22, and a junction box 29 is provided on the top panel of the housing 22. The embedded design of the touch screen 28 can improve the overall aesthetics and ease of operation of the driver, while saving space; the position design of the junction box 29 facilitates wiring and maintenance, while maintaining the compactness of the overall structure.

[0033] Working principle: The driver of this utility model is connected to the motor housing via a fan cover. The mixed-flow impeller is directly connected to the rear output shaft of the motor, that is, the mixed-flow impeller 7 is installed on the rear output shaft 17 of the motor. When the motor is running, the mixed-flow impeller 7 rotates at high speed with the motor, such as... Figure 1 and Figure 4As shown, air enters through the air inlet 12, and after passing through the heat dissipation fins 14, the airflow enters the main air duct 11. Guided by the air guide plate 8 and the fan cover 4, the airflow flows out from the gap between the fan cover and the motor housing. The high-speed airflow can carry away the heat of the drive unit and the motor, thereby achieving the purpose of heat dissipation.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A motor driver with a mixed-flow fan cooling device, comprising a drive unit and a cooling unit, characterized in that, The heat dissipation unit includes a radiator and a fan shroud. The radiator is disposed between the drive unit and the fan shroud and forms an air inlet. The radiator has a first annular opening. One end of the fan shroud has a second annular opening. A mixed-flow impeller and a guide plate are disposed below the second annular opening. The guide plate is fixedly disposed on the inner wall of the fan shroud. The upper end of the guide plate has a third annular opening, and the lower end of the guide plate has an air outlet. The first annular opening, the second annular opening, and the third annular opening form a main air duct, which connects the air inlet and the air outlet.

2. A motor driver with a mixed-flow fan cooling device according to claim 1, characterized in that, The radiator includes heat dissipation fins, which are distributed at circumferential intervals along the first annular opening.

3. A motor driver with a mixed-flow fan cooling device according to claim 2, characterized in that, The heat dissipation fins are in the shape of arc strips, and the heat dissipation fins are evenly distributed at intervals along the circumference of the first annular opening.

4. A motor driver with a mixed-flow fan cooling device according to claim 1, characterized in that, The air guide plate is bowl-shaped, and the diameter of the third annular opening is smaller than the diameter of the air outlet.

5. A motor driver with a mixed-flow fan cooling device according to claim 1, characterized in that, The mixed-flow impeller includes a chassis and impeller blades. A sleeve is provided at the center of the chassis. The impeller blades are distributed at intervals along the circumference of the chassis. An air guide ring is connected above the impeller blades, and an air inlet ring is provided on the air guide ring.

6. A motor driver with a mixed-flow fan cooling device according to claim 1, characterized in that, The lower edge of the shroud has several mounting holes.

7. A motor driver with a mixed-flow fan cooling device according to claim 2, characterized in that, The drive unit includes a housing, and the outer side of the bottom plate of the housing is in contact with the heat sink fins.

8. A motor driver with a mixed-flow fan cooling device according to claim 7, characterized in that, The drive unit further includes a drive module and a drive circuit board. The drive module is installed on the inner side of the base plate, and support columns are provided around the inner side of the base plate. The drive circuit board is positioned above the drive module via the support columns.

9. A motor driver with a mixed-flow fan cooling device according to claim 7, characterized in that, A power supply box is provided on one side of the housing, a touch screen is provided on the other side of the housing, and a junction box is provided on the top panel of the housing.

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