A variable-frequency permanent magnet integrated machine

Abstract

The present invention relates to a variable-frequency permanent magnet integrated machine, belonging to the technical field of motors. By optimizing heat dissipation and variable-frequency control, the present invention realizes the efficient utilization of energy, reduces the power consumption and heat dissipation burden during the operation of the equipment, and meets the requirements of energy conservation and environmental protection, etc. The technical solutions adopted include: a housing, including a machine base, a front end cover and a rear end cover. A sealing plate is provided in the middle of the rear end cover, dividing the rear end cover into area A and area B; a moving component is arranged inside the housing; a rotating shaft is arranged inside the moving component, and one end thereof far away from the front end cover penetrates through the rear end cover, passes through area A, penetrates through the sealing plate and is located in area B; a partition plate is arranged at the first end of area B far away from the sealing plate; a cooling fan is located in area B and is installed on the rotating shaft; a measuring component is connected and arranged on the partition plate and generates a signal when contacting with the cooling fan during rotation; a signal feedback component is arranged on the outer surface of the housing and is used for displaying the change when the measuring component contacts with the cooling fan.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a variable-frequency permanent magnet integrated machine. Background Art

[0002] A variable-frequency permanent magnet integrated machine is a new type of electrical equipment that combines a frequency converter and a permanent magnet synchronous motor, aiming to meet the urgent needs of modern industry for high-efficiency and energy-saving drive systems; traditional motor drive systems are usually composed of an independent motor and a frequency converter combined. This split design requires complex electrical connections and system debugging, and at the same time increases the equipment volume and installation difficulty. In addition, improper matching between the motor and the frequency converter may lead to reduced efficiency, insufficient control accuracy, and limited operation reliability, and cannot fully meet the requirements of current industrial automation and intelligent development.

[0003] Permanent magnet synchronous motors have become important equipment in the industrial field due to their high efficiency, high power density, wide speed regulation range, and operation stability; however, traditional motor systems usually rely on external frequency converters to achieve variable speed control, which not only complicates the control circuit but also increases the losses in the energy transfer process; with the progress of technology, the design scheme of highly integrating the permanent magnet synchronous motor and the frequency converter to form a variable-frequency permanent magnet integrated machine not only simplifies the system structure but also significantly improves the overall efficiency and reliability.

[0004] The variable-frequency permanent magnet integrated machine realizes efficient electrical connection and data transmission by directly embedding the frequency converter module into the motor structure; the integrated design avoids the influence of external wiring on the system performance, and through optimizing the electromagnetic design and control algorithm, enables the equipment to maintain high-efficiency operation within a wider operating condition range. In addition, the frequency converter adopting digital control technology can real-time monitor the motor operation state, adjust the torque output and speed control, and further improve the dynamic response ability of the system.

[0005] Heat dissipation and reliability have always been the core technical problems faced by high-power motor equipment. Therefore, the present application provides a variable-frequency permanent magnet integrated machine to solve the above problems, realizes a high-efficiency heat dissipation effect through structural design, and can check whether the internal parts are loose without disassembly and maintenance in daily use, thereby better ensuring the long-term stable operation of the motor. Summary of the Invention

[0006] In view of the above situation, the present invention provides a variable-frequency permanent magnet integrated machine, which realizes the efficient utilization of energy by optimizing heat dissipation and variable-frequency control, and at the same time reduces the power consumption and heat dissipation burden of the equipment operation, meeting the requirements of energy conservation and environmental protection.

[0007] A variable-frequency permanent magnet integrated machine includes:

[0008] The housing includes a base, a front end cover, and a rear end cover. A sealing plate is provided in the middle of the rear end cover, dividing the rear end cover into area A and area B;

[0009] The moving component is arranged inside the housing;

[0010] The rotating shaft passes through the inside of the moving component, and one end thereof away from the front end cover penetrates the rear end cover, area A, and the sealing plate and is located in area B;

[0011] The partition plate is arranged at one end of area B away from the sealing plate;

[0012] The cooling fan is located in area B and is installed on the rotating shaft;

[0013] The measuring component is connected and arranged on the partition plate, and contacts with the cooling fan during rotation to generate a signal;

[0014] The signal feedback component is arranged on the outer surface of the housing and is used to display the change of the signal when the measuring component contacts the cooling fan;

[0015] The variable frequency sensor is installed on the partition plate;

[0016] The heat dissipation shell is connected and arranged at one end of the housing, and an electronic circuit board for the variable frequency sensor is received inside;

[0017] Preferably, the moving component includes a rotor component, a stator component, and a heat dissipation unit;

[0018] The rotor component is arranged on the outer surface of the rotating shaft;

[0019] The stator component is sleeved outside the rotor component;

[0020] The heat dissipation unit is arranged on both sides of the rotor component.

[0021] Preferably, the heat dissipation unit includes a circular shaft plate, aluminum blades, conical columns, and mounting shafts;

[0022] There are two groups of the circular shaft plates, which are arranged on both sides of the rotor component and are coaxially arranged with the rotor component. The two groups of circular shaft plates are fixedly connected by hexagon bolts in the middle;

[0023] There are multiple aluminum blades, conical columns, and mounting shafts, and they are all distributed on the circular shaft plate.

[0024] Preferably, a plurality of bottom shafts are equidistantly distributed on one side of the circular shaft plate away from the side where the aluminum blades, conical columns, and mounting shafts are arranged. One side surface of the bottom shaft is in direct contact with the rotor component, so as to form a gap between the circular shaft plate and the rotor component;

[0025] The circular shaft plate is provided with the same number of mounting holes corresponding to the mounting shaft, and the mounting shafts on the two groups of circular shaft plates are arranged opposite to the mounting holes; the mounting shafts and the mounting holes correspond to both sides of the hexagonal bolts penetrating through the two circular shaft plates.

[0026] Preferably, the cooling fan is provided with five fan blades, and each fan blade is provided with an opening with a depth of five millimeters. An elastic sheet adapted to the opening depth is provided in the opening, and a moving contact is provided on the elastic sheet.

[0027] Preferably, the measuring assembly includes a ring shaft, a convex shaft, a static contact, and a contact piece;

[0028] The ring shaft is connected and arranged inside the partition board;

[0029] There are five convex shafts, which are distributed on the ring shaft;

[0030] The static contact is arranged on the side of the convex shaft away from the ring shaft;

[0031] There are five contact pieces, which are respectively connected to the corresponding five static contacts.

[0032] Preferably, a starting point is set on the ring shaft. Starting from the starting point, the ring shaft is equally divided into five equal short shafts, and one short shaft is equally divided into four small shafts;

[0033] The position of the first small shaft clockwise starting from the starting point is the setting point of the first convex shaft;

[0034] The position of the second small shaft counterclockwise starting from the starting point is the setting point of the second convex shaft;

[0035] The position of the third small shaft counterclockwise starting from the starting point is the setting point of the third convex shaft;

[0036] The position of the fourth small shaft counterclockwise starting from the starting point is the setting point of the fourth convex shaft;

[0037] The position of the fifth small shaft counterclockwise starting from the starting point is the setting point of the fifth convex shaft;

[0038] The first convex shaft and the fifth convex shaft are in contact with the moving contact through rotation synchronization; the remaining second convex shaft, third convex shaft, and fourth convex shaft are all individually in contact with the moving contact.

[0039] Preferably, the signal feedback assembly includes a display, a contact clip, and a signal lamp;

[0040] The display is installed on the outer shell;

[0041] The contact clip is movably arranged on the display and is in contact and energized with the contact piece;

[0042] The signal lights are equal in number to the static contacts and are arranged on the display for showing the state after the static contacts and the moving contacts are in contact and energized.

[0043] Preferably, the variable-frequency sensor is a PG sensor.

[0044] Preferably, the outer surface of the heat dissipation shell is divided into area C, area D, and area E;

[0045] A plurality of linear heat dissipation fins are arranged on the middle surface of area C, and the middle of area C is recessed towards one side of the outer shell to form a trapezoidal groove, and a driving fan is arranged in the trapezoidal groove;

[0046] Area D and area E are respectively arranged on both sides of area C;

[0047] A plurality of linear heat dissipation fins are arranged on area D and are in a cross shape with the heat dissipation fins of area C;

[0048] Area E is used for installing a waterproof connector.

[0049] The beneficial effects of the above technical solutions are as follows:

[0050] (1) Through the collaborative work of the heat dissipation unit, the cooling fan, the external heat dissipation shell and multiple components, the heat dissipation efficiency is significantly improved, the risk of performance degradation caused by overheating of the equipment is reduced, and the stable operation of the equipment is ensured; (2) Using a variable-frequency sensor to replace the traditional encoder and cooperating with the electronic circuit board can detect the rotor position and speed in real time, realize the precise control of the motor speed and torque, and improve the operation efficiency and response ability; secondly, the variable-frequency sensor does not require physical contact, simplifies the structure, reduces the dependence on external sensors and the wiring complexity, and reduces the cost; the signal feedback system is convenient for quickly judging faults and daily maintenance through visual signal lights and non-contact detection methods. (3) Through optimizing heat dissipation and variable-frequency control, the efficient utilization of energy is realized, and at the same time, the power consumption and heat dissipation burden of the equipment operation are reduced, meeting the requirements of energy conservation and environmental protection. (4) Through the mutual cooperation between the cooling fan, the measuring component and the signal feedback component, it is possible to observe the internal state during daily operation without disassembling parts, and make a reaction when problems such as inclined parts loosening inside occur, and timely judgment can prompt maintenance personnel to repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0052] Figure 2 It is a schematic sectional structure diagram of the present invention;

[0053] Figure 3 It is a schematic diagram of the heat dissipation unit structure of the present invention;

[0054] Figure 4Schematic diagram of the stator assembly structure of the present invention;

[0055] Figure 5 Schematic diagram of the heat dissipation shell structure of the present invention;

[0056] Figure 6 Schematic diagram of the trapezoidal groove structure of the present invention;

[0057] Figure 7 Schematic diagram of the cooling fan structure of the present invention;

[0058] Figure 8 Schematic diagram of the measurement component structure of the present invention;

[0059] Figure 9 Schematic diagram of the small shaft structure of the present invention;

[0060] Figure 10 Schematic diagram of the short shaft structure of the present invention;

[0061] Figure 11 For the present invention Figure 2 Enlarged schematic diagram at position A in

[0062] In the figure: 1. Outer shell; 11. Machine base; 12. Front end cover; 13. Rear end cover; 131. Area A; 132. Area B; 14. Sealing plate; 2. Moving component; 21. Rotor assembly; 22. Stator assembly; 23. Heat dissipation unit; 231. Circular shaft plate; 2311. Bottom shaft; 2312. Mounting hole; 232. Aluminum blade; 233. Conical column; 234. Mounting shaft; 3. Rotating shaft; 4. Partition board; 5. Cooling fan; 51. Fan blade; 52. Opening; 53. Elastic sheet; 54. Moving contact; 6. Measurement component; 601. Starting point; 61. Ring shaft; 611. Short shaft; 612. Small shaft; 62. Convex shaft; 63. Static contact; 64. Contact piece; 7. Signal feedback component; 71. Display; 72. Contact clip; 73. Signal lamp; 8. Frequency conversion sensor; 9. Heat dissipation shell; 91. Area C; 92. Area D; 93. Area E; 94. Trapezoidal groove; 95. Driving fan; 10. Electronic circuit board. Detailed implementation manners

[0063] Regarding the foregoing and other technical contents, features and effects of the present invention, they can be clearly presented in the following detailed description of the embodiments in conjunction with the attached Figures 1 to 11 drawings. The structural contents mentioned in the following embodiments are all referenced to the drawings of the specification.

[0064] Reference can be made to Figures 1 - 2, this application mainly consists of a housing 1, a motion component 2 arranged inside the housing 1, a rotating shaft 3 passing through the motion component 2, a partition 4 arranged on one side of the housing 1, a cooling fan 5 arranged on the rotating shaft 3, a measurement component 6 arranged on the partition 4, a signal feedback component 7 arranged on the housing 1, a variable frequency sensor 8 arranged on the partition 4, a heat dissipation housing 9 arranged on one side of the housing 1, and an electronic circuit board 10 located inside the heat dissipation housing 9, so as to combine the frequency converter and the permanent magnet motor to form an integrated machine, and provide advantages in internal heat dissipation and internal detection work after combination.

[0065] For reference Figures 1 - 2 , the housing 1 is divided into three parts, and the three parts include a machine base 11, a front end cover 12, and a rear end cover 13. Further settings are made for the rear end cover 13. A sealing plate 14 is arranged in the middle of it, and the rear end cover 13 is divided into area A 131 and area B 132 by the sealing plate 14.

[0066] For reference Figures 2 - 3 , the motion component 2 works inside the housing 1 and includes a rotor component 21, a stator component 22, and a heat dissipation unit 23. The rotor component 21 is arranged on the outer surface of the rotating shaft 3, and the stator component 22 is sleeved outside the rotor component 21. The cooperation of the rotor component 21, the stator component 22, and the rotating shaft 3 passing through the stator component 22 are all common and mature technologies in this technical field, and this application will not elaborate on them.

[0067] The heat dissipation unit 23 is arranged on both sides of the rotor component 21. Setting the heat dissipation unit 23 can further help dissipate the heat of the rotor component 21, so as to enable the rotor component 21 to work stably continuously later.

[0068] Specifically, the heat dissipation unit 23 includes a circular shaft plate 231, aluminum blades 232, a conical column 233, and a mounting shaft 234;

[0069] There are two groups of circular shaft plates 231, arranged on both sides of the rotor component 21 and coaxially arranged with the rotor component 21. The two groups of circular shaft plates 231 are connected and fixed by hexagon bolts in the middle; at the same time, in order to reduce the heat conduction of the rotor component 21 to the circular shaft plate 231, a plurality of bottom shafts 2311 are equidistantly distributed on the side of the circular shaft plate 231 away from the aluminum blades 232, the conical column 233, and the mounting shaft 234. One side of the bottom shaft 2311 is in direct contact with the rotor component 21; through the direct connection of the plurality of bottom shafts 2311 to the surface of the rotor component 21, and the plurality of bottom shafts 2311 are not connected to each other and have a certain interval, so as to form a gap between the circular shaft plate 231 and the rotor component 21, thereby reducing the heat conduction of the rotor component 21 towards the circular shaft plate 231, and an effect of increasing air circulation and heat dissipation can be formed by this interval.

[0070] There are two sets of circular shaft plates 231 located on both sides of the rotor assembly 21 for heat dissipation work. At the same time, the circular shaft plates 231 are stably connected to both sides of the rotor assembly 21 through hexagon bolts. In order to facilitate the installation of the bolts, an installation shaft 234 is further provided. There are multiple installation shafts 234, which are connected corresponding to multiple hexagon bolts. At the same time, in order to facilitate the connection between the two sets of circular shaft plates 231 using the installation shafts 234, the circular shaft plates 231 are further provided with the same number of installation holes 2312 corresponding to the installation shafts 234. The installation shafts 234 and the installation holes 2312 on the two sets of circular shaft plates 231 are arranged oppositely. The installation shafts 234 and the installation holes 2312 correspond to both sides of the hexagon bolts penetrating through the two circular shaft plates 231. Thus, after passing a hexagon bolt through the installation hole 2312 on the first set of circular shaft plates 231 and connecting it to the installation shaft 234 on the second set of circular shaft plates 231, not only can the connection of the bolts be facilitated, but also the protruding installation shafts 234 can wrap the passed bolts, which can not only reduce the possibility of deformation of the hexagon bolts, but also reduce the damage of the hexagon bolts exposed outside and the frictional loss to the internal structure.

[0071] There are multiple aluminum blades 232 and conical columns 233, which are all distributed on the circular shaft plates 231. The aluminum blades 232 are the main structures for fan ventilation and heat dissipation. Heat dissipation is achieved through the airflow formed by the rotation of the aluminum blades 232. The conical columns 233 are used to change the airflow formed by the aluminum blades. The shape design of the conical structure of the conical columns 233 can optimize the air flow path, reduce eddy currents and energy losses, improve the heat dissipation efficiency, and at the same time, when the fan blades rotate, the columnar structure provides additional support to avoid deformation or loosening caused by long-term use.

[0072] In view of the above, to achieve the heat dissipation effect inside the device based on the stator assembly 22 and the rotor assembly 21, it is found in further mechanical improvements that although there is an effective heat dissipation effect, there will still be a situation of insufficient heat dissipation. Therefore, a cooling fan 5 is installed in the B area 132 of the rear end cover 13 to further increase the heat dissipation effect.

[0073] For reference Figures 5 - 6 , a heat dissipation shell 9 is connected to the rear end cover 13 of the housing 1 to achieve the heat dissipation effect again. In order to prevent the hot air inside the housing 1 from entering the heat dissipation shell 9 and affecting the electronic circuit board 10 arranged inside the heat dissipation shell 9, a partition plate 4 is provided at one end of the B area 132 away from the sealing plate 14, that is, at the connection middle part of the heat dissipation shell 9 and the housing 1. Through the setting of the partition plate 4, the situation of the hot air inside the housing 1 entering the heat dissipation shell 9 can be reduced, and the heat inside the heat dissipation shell 9 entering the housing 1 can also be reduced, reducing the heat dissipation burden inside the housing 1.

[0074] For reference Figures 5 - 6, the outer surface of the heat dissipation shell 9 is divided into a C area 91, a D area 92 and an E area 93; multiple linear heat dissipation fins are provided on the middle surface of the C area 91, and the middle of the C area 91 is recessed towards the housing 1 to form a trapezoidal groove 94, and a driving fan 95 is provided in the trapezoidal groove 94, and the driving fan 95 can further increase the heat dissipation effect; the D area 92 and the E area 93 are respectively arranged on both sides of the C area 91; multiple linear heat dissipation fins are provided on the D area 92 and are cross-shaped with the heat dissipation fins of the C area 91. Through the linkage cooperation of the heat dissipation fins at the two places and the driving fan 95, the heat dissipation fan can better play the heat dissipation effect; the E area 93 is used to install a waterproof connector.

[0075] In view of the above, through the linkage cooperation between multiple parts, the heat dissipation effects of multiple parts can be achieved through mutual cooperation, thereby significantly improving the performance, reliability and lifespan of the device, while reducing the operating cost and failure risk.

[0076] For reference Figure 2 , in realizing the frequency conversion effect, most of the existing ones use an encoder to real-time feedback the position and speed information of the rotor. In this application, the encoder is replaced with a frequency conversion sensor 8; and the frequency conversion sensor 8 is arranged on the partition plate 4. At the same time, the frequency conversion sensor 8 cooperates with the electronic circuit board 10. The electronic circuit board 10 processes the pulse signal of the frequency conversion sensor 8, and through filtering, amplification and shaping, the original signal is converted into a digital signal that the frequency conversion control system (electronic circuit board 10) can process, and according to these signals, and in cooperation with the control algorithm, the output frequency and voltage are adjusted; according to the speed and position information feedback by the frequency conversion sensor 8, the output frequency and voltage are dynamically adjusted to achieve precise control of the motor speed and torque.

[0077] Further, the frequency conversion sensor 8 is preferably a PG sensor.

[0078] Through the mutual cooperation between the frequency conversion sensor 8 and the electronic circuit board 10, the position of the rotor magnetic pole can be detected at any time, avoiding the worry of demagnetization caused by problems such as stall, loss of step, and zero position deviation of the permanent magnet motor (including the housing 1, the moving component 2 and the rotating shaft 3) due to sudden load changes.

[0079] In view of the above, the frequency conversion sensor 8 of this application does not require physical contact, has a relatively simple working principle, can achieve higher reliability, reduces the dependence on external sensors, thereby reducing the cost and maintenance difficulty. Its volume is small, greatly reducing the electrical control cabinet and complicated wiring, and can be widely used in equipment in multiple fields such as computer data centers, petrochemicals, logistics warehousing, papermaking, printing, washing, new energy transportation, etc.

[0080] The improvements proposed above are in the directions of frequency conversion and heat dissipation. In the direction of daily maintenance and detection, further enhancements are also made. The internal cooling fan 5 is further optimized, and a measurement component 6 and a signal feedback component 7 are synchronously set up to cooperate, as follows:

[0081] for reference Figure 2 and Figure 7 , the cooling fan 5 is provided with five fan blades 51, and openings 52 with a depth of 5 mm are arranged on each fan blade 51; an elastic piece 53 adapted to the depth of the opening 52 is arranged in the opening 52, and a moving contact 54 is arranged on the outer side of the elastic piece 53 facing outward; when an object touches the moving contact 54, the elastic piece 53 will be deformed. Thus, when the elastic piece 53 is deformed, the object in contact can directly leave without being blocked by the elastic piece 53.

[0082] for reference Figure 2 , Figure 7 and Figure 8 , a measurement component 6 is further arranged to make the moving contact 54 work. The measurement component 6 includes a ring shaft 61, a convex shaft 62, a static contact 63, and a contact piece 64; the ring shaft 61 is connected and arranged in the partition plate 4 for support; there are five convex shafts 62, which are distributed on the ring shaft 61, and the five convex shafts 62 are used to cooperate with the elastic piece 53 in the cooling fan 5; the static contact 63 is arranged on the side of the convex shaft 62 away from the ring shaft 61, and is used to cause the static contact 63 to form a connection with the moving contact 54 during the cooperative movement of the convex shaft 62 and the elastic piece 53, thereby emitting a signal; there are five contact pieces 64, which are respectively connected to the corresponding five static contacts 63, and are used to transmit to the signal feedback component 7 through the contact piece 64 after the static contact 63 is connected to the moving contact 54, forming a visual signal feedback state presentation.

[0083] Due to the deformable setting of the elastic piece 53, in order to avoid problems such as internal loss caused by frequent contact between the convex shaft 62 and the elastic piece 53, the position of the convex shaft 62 is further set. First, the contact distance between the convex shaft 62 and the elastic piece 53 is set. When the convex shaft 62 touches the elastic piece 53, the maximum downward deformation range of the elastic piece 53 is 2 mm. That is, when the cooling fan 5 is stationary, the depth of the convex shaft 62 immersed in the opening 52 is 2 mm, and the short-distance contact can also effectively reduce the occurrence of large-amplitude deformation of the elastic piece 53.

[0084] For further reference Figures 9 - 10, a starting point 601 is set on the ring axis 61. Starting from the starting point 601, the ring axis 61 is equally divided into five equal short axes 611, and each short axis 611 is equally divided into four small axes 612; the position of one small axis 612 clockwise from the starting point 601 is the setting point of the first convex axis 62; the position of two small axes 612 counterclockwise from the starting point 601 is the setting point of the second convex axis 62; the position of five small axes 612 counterclockwise from the starting point 601 is the setting point of the third convex axis 62; the position of eight small axes 612 counterclockwise from the starting point 601 is the setting point of the fourth convex axis 62; the position of eleven small axes 612 counterclockwise from the starting point 601 is the setting point of the fifth convex axis 62; during the rotation process, only the first convex axis 62 and the fifth convex axis 62 are in contact with the moving contact 54 through rotation synchronously, and at this time there are two position signals; the remaining second convex axis 62, third convex axis 62, and fourth convex axis 62 are all in contact with the moving contact 54 separately, and at this time there is only one signal; therefore, during the rotation, at most only two convex axes 62 are in contact with the elastic piece 53, and the frequency is one-fourth; thus, the problem that the elastic piece 53 is easily worn due to frequent movement can be effectively reduced, and the elastic piece 53 is given time to reset.

[0085] The signal formed by the intersection of the static contact 63 and the moving contact 54 is reacted through the signal feedback component 7, and the signal feedback component 7 includes a display 71, a contact clip 72, and a signal lamp 73;

[0086] For reference Figure 8 and Figure 11 , the display 71 is installed on the housing 1 and is used to process the signal after the contact piece 64 is connected and energized with the contact clip 72;

[0087] The contact clip 72 is movably arranged on the display 71 and is in contact and energized with the contact piece 64. When the contact clip 72 is moved, the control of the power-off between the contact clip 72 and the contact piece 64 can be controlled. Thus, when the component is not in use, the power can be cut off to reduce waste;

[0088] The number of signal lamps 73 is the same as that of the static contacts 63 and is arranged on the display 71 and is used to display the state after the static contact 63 is in contact and energized with the moving contact 54. One signal lamp 73 corresponds to one static contact 63. When the corresponding static contact 63 is in contact with the moving contact 54, the corresponding signal lamp 73 lights up;

[0089] The display 71 determines the stability of the internal movement by observing the regular changes of the signal lamp 73. Secondly, the cooling fan 5 is installed on the rotating shaft 3. When the connection of the internal cooling fan becomes loose, it will change the movement mode between the connection signals, thereby changing the lighting condition of the signal lamp 73. At this time, the contact current signal and the brightness of the signal lamp 73 can be accurately observed to judge the internal condition. When the internal partition 4 or the measuring component 6 is deviated, it will also affect the original lighting rule, so that the display 71 processes and observes the change and repairs the interior. This structure can also check the internal condition without disassembly during daily inspection, which is convenient for operation and spot check.

[0090] The specific operation functions of this variable-frequency permanent magnet integrated machine are as follows:

[0091] The device of the present application includes a housing 1, a moving component 2, a rotating shaft 3, a heat dissipation system, a variable-frequency sensor and a signal feedback component 7. Through the coordinated work of multiple components, the integration of variable frequency and heat dissipation is realized, improving the performance and reliability of the equipment. The housing 1 is divided into a machine base 11, a front end cover 12 and a rear end cover 13, and is separated into different areas by a sealing plate 14 to optimize the heat dissipation and function layout. The moving component 2 includes a rotor component 21, a stator component 22 and a heat dissipation unit 23. The heat dissipation unit 23 is composed of a circular shaft plate 231, aluminum blades 232, a conical column 233 and a mounting shaft 234, and significantly improves the heat dissipation efficiency through air flow optimization and structural design.

[0092] A cooling fan 5 is installed in the rear end cover 13, and a heat dissipation shell 9 is connected to one side of the housing 1. The heat dissipation shell 9 further enhances the heat dissipation effect through the design of linear heat dissipation blades, a trapezoidal groove 94 and a driving fan 95. The setting of the partition 4 prevents hot air from affecting the performance of the internal electronic circuit board 10. In addition, the variable-frequency sensor 8 replaces the traditional encoder and cooperates with the electronic circuit board 10 to detect the rotor position and speed in real time, and accurately controls the speed and torque of the motor through signal processing, simplifying the structure and reducing the cost.

[0093] The signal feedback component 7 cooperates with the moving contact 54 on the cooling fan 5 and the static contact 63 on the measuring component 6 to dynamically monitor the operation state of the equipment. The signal lamp 73 shows the stability of the equipment operation by feedbacking the current change and its lighting condition, which helps users judge internal faults and perform maintenance without disassembly.

[0094] The above description is only for the purpose of illustrating the present invention. It should be understood that the present invention is not limited to the above embodiments, and various flexible forms conforming to the idea of the present invention are within the protection scope of the present invention.

Claims

1. A variable frequency permanent magnet integrated machine, characterized in that: include: The housing (1) comprises a base (11), a front cover (12) and a rear cover (13); a sealing plate (14) is provided in the middle of the rear cover (13) to divide the rear cover (13) into an A zone (131) and a B zone (132); A motion component (2) is disposed in the housing (1); The rotating shaft (3) is arranged inside the moving component (2), and the end of the rotating shaft (3) away from the front cover (12) passes through the rear cover (13), the A area (131) and the sealing plate (14) and is located in the B area (132); A partition plate (4) is arranged at one end of the region B (132) away from the sealing plate (14); A cooling fan (5) is located in the B area (132) and is mounted on the rotating shaft (3). The cooling fan (5) is provided with five blades (51). Each of the blades (51) is provided with an opening (52) with a depth of 5 mm. An elastic sheet (53) adapted to the depth of the opening (52) is provided in the opening (52), and a moving contact (54) is provided on the elastic sheet (53); A measuring assembly (6) is connected to the partition (4), the measuring assembly (6) comprising a ring shaft (61), a convex shaft (62), a static contact (63) and a contact sheet (64); the ring shaft (61) is connected to the partition (4), five convex shafts (62) are provided and distributed on the ring shaft (61), the static contact (63) is provided on a side of the convex shaft (62) away from the ring shaft (61), and five contact sheets (64) are provided and respectively connected to the corresponding five static contacts (63); A signal feedback component (7) is disposed on the outer surface of the housing (1) and is used to display changes in the signal when the measuring component (6) contacts the cooling fan (5); a signal formed by the intersection of the static contact (63) and the moving contact (54) is transmitted to the signal feedback component (7) through the contact sheet (64), forming a visual signal feedback state presentation; A frequency conversion sensor (8) is mounted on the partition (4); A heat dissipation shell (9) is connected to one end of the outer shell (1) and contains an electronic circuit board (10) for the frequency conversion sensor (8).

2. The variable frequency permanent magnet integrated machine according to claim 1, characterized in that: The motion component (2) comprises a rotor component (21), a stator component (22) and a heat dissipation unit (23); The rotor assembly (21) is arranged on the outer surface of the rotating shaft (3); The stator assembly (22) is sleeved outside the rotor assembly (21); The heat dissipation units (23) are arranged on both sides of the rotor assembly (21).

3. The variable frequency permanent magnet integrated machine according to claim 2, characterized in that: The heat dissipation unit (23) comprises a circular shaft plate (231), an aluminum leaf (232), a conical column (233) and a mounting shaft (234); There are two groups of circular shaft plates (231), which are arranged on both sides of the rotor assembly (21) and are coaxially arranged with the rotor assembly (21). The two groups of circular shaft plates (231) are connected and fixed in the middle by hexagonal bolts; There are a plurality of the aluminum leaves (232), the tapered columns (233), and the mounting shafts (234), which are all distributed on the circular shaft plate (231).

4. The variable frequency permanent magnet integrated machine according to claim 3, characterized in that: A plurality of bottom shafts (2311) are evenly spaced and arranged on one side of the circular shaft plate (231) away from the aluminum leaf (232), the conical column (233) and the mounting shaft (234); a side surface of the bottom shaft (2311) is in direct contact with the rotor assembly (21), thereby forming a gap between the circular shaft plate (231) and the rotor assembly (21); The circular axis plates (231) are provided with the same number of mounting holes (2312) corresponding to the mounting shafts (234), and the mounting shafts (234) and mounting holes (2312) on the two groups of circular axis plates (231) are arranged opposite to each other; the mounting shafts (234) and mounting holes (2312) correspond to the two sides of the hexagonal bolts penetrating the two circular axis plates (231).

5. The variable frequency permanent magnet integrated machine according to claim 1, characterized in that: A starting point (601) is set on the ring axis (61), and starting from the starting point (601), the ring axis (61) is equally spaced into five short axes (611), and one short axis (611) is equally divided into four small axes (612); The position of the first small shaft (612) clockwise from the starting point (601) is the setting point of the first convex shaft (62); The positions of the two small shafts (612) counterclockwise from the starting point (601) are the setting points of the second convex shaft (62); The positions of the five small shafts (612) counterclockwise from the starting point (601) are the setting points of the third convex shaft (62); The positions of the eight small shafts (612) counterclockwise from the starting point (601) are the setting points of the fourth convex shaft (62); The position of the eleven small shafts (612) counterclockwise from the starting point (601) is the setting point of the fifth convex shaft (62); The first convex shaft (62) and the fifth convex shaft (62) are in contact with the moving contact (54) by rotating synchronously; the remaining second convex shaft (62), third convex shaft (62) and fourth convex shaft (62) are in contact with the moving contact (54) individually.

6. The variable frequency permanent magnet integrated machine according to claim 1, characterized in that: The signal feedback component (7) comprises a display (71), a contact clip (72) and a signal light (73); The display device (71) is mounted on the housing (1); The contact clip (72) is movably disposed on the display device (71) and is in contact with the contact piece (64) to be energized; The signal lights (73) are the same in number as the static contacts (63) and are arranged on the display device (71) to display the state of the static contacts (63) and the moving contacts (54) after they are in contact and energized.

7. The variable frequency permanent magnet integrated machine according to claim 1, characterized in that: The frequency conversion sensor (8) is a PG sensor.

8. The variable frequency permanent magnet integrated machine according to claim 1, characterized in that: The outer surface of the heat dissipation shell (9) is divided into a C area (91), a D area (92) and an E area (93); The C zone (91) is provided with a plurality of linear heat dissipation blades on its central surface, and the central portion of the C zone (91) is recessed toward one side of the housing (1) to form a trapezoidal groove (94), wherein a driving fan (95) is provided in the trapezoidal groove (94); The D zone (92) and the E zone (93) are respectively arranged on two sides of the C zone (91); The D zone (92) is provided with a plurality of linear heat dissipation blades, which are arranged in a cross shape with the heat dissipation blades of the C zone (91); The E area (93) is used for installing a waterproof joint.

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