A digital motor

Abstract

The utility model relates to a kind of digital motor, including the electromechanical integration intelligent shell that is separated into upper chamber and the lower chamber for accommodating the drive motor by support plate, the control system includes variable-frequency drive module and operating panel module, the variable-frequency drive module includes the variable-frequency drive circuit board and capacitor plate arranged in the upper chamber, the variable-frequency drive circuit board is arranged closely on the upper surface of the support plate, the lower surface of the support plate is directly opposite the variable-frequency drive circuit board and is arranged closely with radiator, the circumference of the radiator is equipped with flow guide air duct, the surface of the electromechanical integration intelligent shell is equipped with air inlet grille opposite the flow guide air duct, the bottom of the radiator is equipped with axial fan, the bottom plate of the lower chamber is equipped with air outlet.The utility model depth fusion of motor and control part of water pump, further digitalization, integration of motor, while solve the heat dissipation problem that electromechanical integration faces.

Description

Technical Field

[0001] This utility model belongs to the technical field of motors for water pumps, and in particular relates to a digital motor. Background Technology

[0002] Traditional water pumps have separate control units and motors, typically with two structures: one where a separate control cabinet serves as the motor's control unit, and the other where the control unit is mounted on the side of the motor in a backpack-like configuration. The first structure uses a long cable connecting the control cabinet and motor, leading to interference during signal transmission, reduced control accuracy, increased connection points increasing the risk of malfunctions, and a large control cabinet footprint. The second structure, on the other hand, suffers from poor heat dissipation, a shift in the motor's center of gravity, a large control unit resulting in high motor temperature rise, noise, and a top-heavy appearance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a digital motor that deeply integrates the motor and control part of the water pump, further digitizes and integrates the motor, and improves the heat dissipation problem encountered in the integration.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A digital motor is provided, including a drive motor and a control system, and also an integrated electromechanical intelligent housing. The integrated electromechanical intelligent housing is divided into an upper chamber and a lower chamber for accommodating the drive motor by a support plate. The drive motor includes a rear end cover, a base, and a front end cover connected sequentially from top to bottom. The front end cover is fixed to the bottom plate of the lower chamber. The control system includes a frequency conversion drive module and an operation panel module. The frequency conversion drive module includes a frequency conversion drive circuit board and a capacitor board disposed in the upper chamber. The frequency conversion drive circuit board is arranged close to the upper surface of the support plate. A heat sink is arranged close to the frequency conversion drive circuit board on the lower surface of the support plate. A guide air duct is provided around the heat sink. An air inlet is provided on the surface of the integrated electromechanical intelligent housing facing the guide air duct. An axial flow fan is provided at the bottom of the heat sink. An air outlet is provided on the bottom plate of the lower chamber. The axial flow fan and the drive motor do not share a rotating shaft.

[0005] Preferably, the drive motor is a high-performance permanent magnet synchronous motor, and the drive motor further includes a rotor assembly and a stator assembly disposed in the frame, with the output shaft of the rotor assembly extending outward through the front end cover.

[0006] Preferably, the rear end cover is frustum-shaped, with a larger area at the end closer to the base and a smaller area at the end farther from the base, and the base has several heat dissipation fins on its side.

[0007] Preferably, the upper chamber is completely sealed and has a waterproof rating higher than IP55.

[0008] Preferably, the electromechanical integrated intelligent housing is made of aluminum alloy.

[0009] Preferably, the control system further includes a PLC module and an incoming line module. The PLC module, the incoming line module, and the operation panel module are located on the side of the mechatronic intelligent housing and are electrically connected to the frequency converter drive module, respectively.

[0010] Preferably, there are two sets of air inlets, symmetrically arranged on both sides of the mechatronic intelligent housing.

[0011] Preferably, the distance between the two sides of the mechatronic intelligent housing where the air inlet grille is located is smaller than the distance between the two sides where the PLC module and the operation panel module are located.

[0012] Preferably, the drive motor is equipped with a circulating water cooling device.

[0013] The beneficial effects are as follows: This utility model deeply integrates electromechanical systems to form a closed-loop control structure, resulting in high product integration and a high degree of digitalization; the independently installed axial flow fan's speed is not affected by the motor speed, ensuring stable heat dissipation; the dual cooling system combining air cooling and axial cooling technologies ensures stable internal temperature of the digital motor; and the aluminum alloy shell design is lightweight, sturdy, and has a long service life.

[0014] Furthermore, this invention employs permanent magnet synchronous technology, which significantly improves the efficiency and reliability of the digital motor; its modular design ensures high standardization and convenient installation and maintenance; the closed design of the frequency conversion drive module significantly reduces the risk of failure of the main control part of the digital motor due to external environmental influences; and the built-in PLC module allows the digital motor to be used in different systems without replacing hardware, demonstrating strong versatility. Attached Figure Description

[0015] Figure 1 This is an exploded view of the overall structure of a digital motor.

[0016] Figure 2 This is a cross-sectional view of a digital motor.

[0017] Figure 3 yes Figure 1 Enlarged sectional view of the upper and middle cover section;

[0018] Figure 4 A three-dimensional digital motor Figure 1 .

[0019] Figure 5 A three-dimensional digital motor Figure 2 .

[0020] Figure 6 This is a top-view cross-sectional view of the casing of a digital motor.

[0021] Figure 7 yes Figure 5 Left view of the middle and rear end cap.

[0022] Figure 8 This is a schematic diagram of the airflow channel and airflow direction of a digital motor air-cooling technology.

[0023] In the diagram: 1-Front end cover; 2-Base; 3-Stator assembly; 4-Rotor assembly; 5-Rear end cover; 6-Operation panel module; 7-Outer shell; 8-Axial flow fan; 9-Variable frequency drive module; 10-Top cover; 11-Cover plate; 12-PLC module; 13-Inlet module; 14-Support plate; 15-Heat sink; 16-Variable frequency drive circuit board; 17-Airflow duct; 18-Capacitor board.

[0024] The same markings in each diagram represent the same component. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0026] like Figures 1-8 As shown, this utility model provides a digital motor, including a drive motor and a control system, and also includes an integrated mechatronic intelligent housing 7. The integrated mechatronic intelligent housing 7 is divided into an upper chamber and a lower chamber for accommodating the drive motor by a support plate 14. The drive motor includes a rear end cover 5, a base 2, and a front end cover 1 connected sequentially from top to bottom. The front end cover 1 is fixed to the bottom plate of the lower chamber. The control system includes a frequency converter drive module 9 and an operation panel module 6. The frequency converter drive module 9 includes components disposed in the upper chamber. The variable frequency drive circuit board 16 and capacitor board 18 are arranged in close contact with the upper surface of the support plate 14. The lower surface of the support plate 14 is directly opposite the variable frequency drive circuit board 16 and a heat sink 15 is arranged in close contact with it. The heat sink 15 is provided with a guide air duct 17 around its periphery. The surface of the mechatronic intelligent housing 7 facing the guide air duct 17 is provided with an air inlet grille. An axial flow fan 8 is provided at the bottom of the heat sink 15. An air outlet is provided on the bottom plate of the lower chamber. The axial flow fan 8 does not share a rotating shaft with the drive motor.

[0027] In use, the outer shell 7, the air duct 17, the radiator 15, the rear cover 5, the outer surface of the base 2, and the front cover 1 constitute the air circulation channel for the air-cooling technology applied in this utility model; the outer shell 7 has enlarged air inlets symmetrically opened on the left and right sides, constituting the air inlet of the air-cooling technology; the front cover 1 has an enlarged air outlet, constituting the air outlet of the air-cooling technology; the cross-sectional area of ​​the air inlet and air outlet is enlarged to ensure sufficient air intake and exhaust volume for the air-cooling technology; the axial flow fan 8 is the core component of the air-cooling technology, and the axial flow fan 8 does not share a rotating shaft with the high-performance permanent magnet synchronous motor and is independent of the high-performance permanent magnet synchronous motor. During operation, while the high-performance permanent magnet synchronous motor changes its speed according to the working conditions, the axial flow fan 8 maintains a constant high speed to ensure stable heat exchange between the inside and outside of the digital motor. When the axial flow fan 8 is running, it draws in external air from the air inlets on both sides of the housing 7. The drawn-in air flows through the air guide duct 17 and the radiator 15, then flows close to the heat sink on the outer surface of the rear cover 5 and the outer surface of the base 2, and flows out from the air outlet on the front cover 1. This allows for full convection between the inside of the digital motor and the outside air, and the application of air cooling technology to simultaneously cool the high-performance permanent magnet synchronous motor and the frequency conversion drive circuit board 16.

[0028] In one specific embodiment, the drive motor is a high-performance permanent magnet synchronous motor. The drive motor also includes a rotor assembly 4 and a stator assembly 3 disposed within the base 2. The output shaft of the rotor assembly 4 extends outward through the front end cover 1. The output shaft is connected to the impeller of the water pump, providing power to the water pump.

[0029] In one specific embodiment, the rear end cover 5 is frustum-shaped, with a larger area at the end closer to the base 2 and a smaller area at the end farther from the base 2. The base 2 has several heat dissipation fins on its side. The rear end cover 5 can reduce the resistance of the air duct on the outlet side of the axial flow fan 8, and the heat dissipation fins can increase the contact area of ​​the air duct, thereby improving the heat dissipation efficiency for the drive motor.

[0030] In one specific embodiment, the upper chamber is completely sealed and has a waterproof rating higher than IP55, preventing water from entering and damaging the frequency conversion drive module 9 when the water pump is in use.

[0031] In one specific embodiment, the mechatronic smart housing 7 is made of aluminum alloy, which reduces the overall weight of the device and increases its service life.

[0032] In one specific embodiment, the control system further includes a PLC module 12 and an incoming line module 13. The PLC module 12, the incoming line module 13, and the operation panel module 6 are located on the side of the mechatronic intelligent housing 7 and are electrically connected to the frequency converter drive module 9, respectively.

[0033] In one specific embodiment, there are two sets of air inlets, symmetrically arranged on both sides of the mechatronic intelligent housing 7, so that air can enter from both sides at the same time to increase the air volume.

[0034] In one specific embodiment, the distance between the two sides of the mechatronic intelligent housing 7 where the air inlet grille is located is smaller than the distance between the two sides where the PLC module 12 and the operation panel module 6 are located, thereby increasing the space on the front and rear sides inside the mechatronic intelligent housing 7. The upper top cavity can be used to accommodate the capacitor plate 18, and the lower bottom cavity can accommodate drive motors of different specifications and provide space for setting heat dissipation fins.

[0035] In one specific embodiment, the control principle of the drive motor is as follows: The PLC module 12 can adjust the control logic according to different needs, and the digital motor can be used in different systems without replacing hardware facilities. It has an early warning function, can detect abnormalities in time and take protective measures, reducing the maintenance cost of the digital motor; The variable frequency drive module 9 realizes variable frequency drive and control of the digital motor, and adjusts the frequency according to different system needs to automatically adjust the speed of the digital motor to adapt to different working conditions; Combined with permanent magnet synchronous technology, the energy efficiency of the digital motor exceeds the first-level energy efficiency, with significant energy saving effect, contributing to carbon emission reduction and promoting the industry to develop in a green and efficient direction.

[0036] In another embodiment, this invention employs a dual cooling system combining air cooling and shaft cooling technologies. By providing a circulating water cooling device for the drive motor, which utilizes shaft cooling technology, cooling water flows through the rotor assembly 4 during operation to cool its interior. Combined with the aforementioned air cooling technology, this forms a dual cooling system, ensuring stable internal motor temperature.

Claims

1. A digital motor, comprising a drive motor and a control system, characterized in that, It also includes an electromechanical integrated intelligent housing, which is divided into an upper chamber and a lower chamber for accommodating the drive motor by a support plate. The drive motor includes a rear end cover, a base, and a front end cover connected sequentially from top to bottom. The front end cover is fixed to the bottom plate of the lower chamber. The control system includes a variable frequency drive module and an operation panel module. The variable frequency drive module includes a variable frequency drive circuit board and a capacitor board disposed in the upper cavity. The variable frequency drive circuit board is arranged close to the upper surface of the support plate. A heat sink is arranged close to the lower surface of the support plate, facing the variable frequency drive circuit board. An airflow duct is provided around the heat sink. An air inlet grille is provided on the surface of the electromechanical integrated intelligent housing facing the airflow duct. An axial flow fan is provided at the bottom of the radiator, and an air outlet is provided on the bottom plate of the lower chamber. The axial flow fan and the drive motor do not share a rotating shaft.

2. A digital motor according to claim 1, wherein, The drive motor is a high-performance permanent magnet synchronous motor. The drive motor also includes a rotor assembly and a stator assembly disposed in the frame. The output shaft of the rotor assembly extends outward through the front end cover.

3. A digital motor according to claim 1, characterized in that, The rear end cover is frustum-shaped, with a larger area at the end closer to the base and a smaller area at the end farther from the base. Several heat dissipation fins are provided on the side of the base.

4. A digital motor according to claim 1, characterized in that, The upper chamber is completely sealed and has a waterproof rating higher than IP55.

5. A digital motor according to claim 1, characterized in that, The mechatronic intelligent housing is made of aluminum alloy.

6. A digital motor according to claim 1, characterized in that, The control system also includes a PLC module and an incoming line module. The PLC module, the incoming line module, and the operation panel module are located on the side of the mechatronic intelligent housing and are electrically connected to the frequency converter drive module.

7. A digital motor according to claim 1, characterized in that, There are two sets of air inlets, symmetrically arranged on both sides of the mechatronic intelligent housing.

8. A digital motor according to claim 6, characterized in that, The distance between the two sides of the mechatronic intelligent housing where the air inlet grille is located is smaller than the distance between the two sides where the PLC module and the operation panel module are located.

9. A digital motor according to claim 1, characterized in that, The drive motor is equipped with a circulating water cooling device.

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