Switched reluctance motor with optimized air gap structure

Abstract

The invention relates to the technical field of switched reluctance motors, in particular to a switched reluctance motor with an optimized air gap structure, which comprises an outer shell, a driving shaft roller is arranged in the center of the inner part of the outer shell, and a rotor body is arranged at one end of the driving shaft roller. An air gap adjusting assembly and a heat dissipation assembly are arranged in the outer shell and on the outer surface of the outer shell respectively, and the outer surface of the rotor body is sleeved with a stator frame. According to the invention, the equipment structure can carry out all-dimensional efficient air gap optimization adjustment operation between the internal rotor body and the stator frame, in the actual use process, a worker firstly integrally installs the driving shaft roller and the rotor body which need to be used in the stator frame, then starts an air control pump machine in the installation cover, and finally performs air gap optimization adjustment on the rotor body and the stator frame. Air is inflated into the air uniformizing frame from an air control valve opening of the air control pump machine, and then the air uniformizing frame conducts uniform flow dividing operation on the four sides of the side face and passes through the ventilation side pipes on the four sides of the side face of the outer shell.

Description

Technical Field

[0001] The present invention relates to the technical field of switched reluctance motors, and particularly to a switched reluctance motor with an optimized air gap structure. Background Art

[0002] The switched reluctance motor is a new type of speed-regulated motor and is the latest generation of speed-regulation system following the variable-frequency speed-regulation system and the brushless DC motor speed-regulation system. It has a simple and robust structure, a wide speed-regulation range, and high system reliability. The complete system mainly consists of parts such as a motor entity, a power converter, a controller, and a position detector. The controller contains a power converter and a control circuit, and the rotor position detector is installed at one end of the motor. Nowadays, the application and development of switched reluctance motors have made obvious progress and have been successfully applied in various fields such as electric vehicle drive, general industry, household appliances, and textile machinery. The motor has a simple structure, low cost, and can be used for high-speed operation. Its rotor has extremely high mechanical strength and can be used for ultra-high-speed operation. In terms of the stator, it only has a few concentrated windings, so it is easy to manufacture, has a simple insulation structure, reliable circuits, and a simple and reliable power circuit. Since the torque direction of the motor is independent of the winding current direction, that is, only a single-phase winding current is required, the power circuit can have one power switch per phase, with good performance and good speed-regulation performance. There are at least four main operating parameters and common methods for controlling a switched reluctance motor: phase conduction angle, phase turn-off angle, phase current amplitude, and phase winding voltage. It is flexible and convenient. According to the operating requirements of the motor and the situation of the motor, different control methods and parameter values can be adopted to make it operate in the best state and can also make it achieve specific curves with various different functions.

[0003] For example, the patent document with the publication number CN 113078793 B discloses a stator-rotor structure of a switched reluctance motor with air-gap self-adaptation, which includes a stator and a rotor; the rotor is rotatably arranged inside the stator; the rotor includes an inner rotor layer and an outer rotor layer; the outer rotor layer is fixedly arranged along the circumferential direction of the inner rotor layer; the inner rotor layer includes an inner inner ring, a first guiding tooth groove, and a fixed base mounting groove; the outer rotor layer includes an outer outer ring, a second guiding tooth groove, an elastic connecting rod, a magnetic conduction damping sheet mounting groove, and a fixed base. This stator-rotor structure of the switched reluctance motor with air-gap self-adaptation realizes air-gap self-adaptive adjustment through the stator-rotor structure, reduces the output torque ripple of the switched reluctance motor, increases the output torque of the motor, reduces vibration and noise, improves the efficiency of the switched reluctance motor, and is convenient for wide promotion and use.

[0004] However, during the actual use of this structure, due to the limitations of the structure of the switched reluctance motor itself, it can often only perform simple fine-tuning operations on the air gap between the stator and the rotor. The adjustment space is limited, so it is impossible to optimize the air gap structure by precisely controlling the distance between the stator and the rotor, and perform the control and adjustment operations of the motor's daily power. At the same time, the equipment cannot perform stable locking and fixing operations on the stator and rotor structures with optimized air gaps, cannot operate stably during overall efficient operation, and cannot meet the daily use requirements. Therefore, it is urgent to design a switched reluctance motor with an optimized air gap structure to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a switched reluctance motor with an optimized air gap structure to solve the problems raised in the above background technology. During the actual use of the existing structure, due to the limitations of the structure of the switched reluctance motor itself, it can often only perform simple fine-tuning operations on the air gap between the stator and the rotor. The adjustment space is limited, so it is impossible to optimize the air gap structure by precisely controlling the distance between the stator and the rotor, and perform the control and adjustment operations of the motor's daily power. At the same time, the equipment cannot perform stable locking and fixing operations on the stator and rotor structures with optimized air gaps, cannot operate stably during overall efficient operation, and cannot meet the daily use requirements.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A switched reluctance motor with an optimized air gap structure, including a housing body. A drive shaft roller is provided at the center inside the housing body. A rotor body is provided at one end of the drive shaft roller. An air gap adjustment component and a heat dissipation component are respectively provided inside and on the outer surface of the housing body. The air gap adjustment component includes a stator frame. A stator frame is sleeved on the outer surface of the rotor body. Limiting sliding frames are evenly arranged on the side surface of the stator frame. An adjustment limiting groove is opened inside the limiting sliding frame. An adjustment stator is movably connected inside the limiting sliding frame. The adjustment stator is adapted to the adjustment limiting groove. An annular socket is provided on the inner wall of the housing body. Shrinkage covers are evenly arranged inside the annular socket. A shrinkage airbag is provided inside the shrinkage cover. The shrinkage airbag is movably and fittingly butted with the adjustment stator. The shrinkage airbag is designed with inner folds on the side surface. The heat dissipation component includes a ventilation side pipe. Ventilation side pipes are fixedly connected to the four sides of the side surface of the housing body. An inclined end cover is fixedly connected to one end of the ventilation side pipe. An air distribution frame is fixedly connected to the other end of the ventilation side pipe. An installation cover is provided on the back of the air distribution frame. A heat dissipation fan group is provided on the back of the installation cover. An exhaust net cover is provided on the back of the heat dissipation fan group.

[0007] Preferably, one end of the installation cover is fixedly connected to an inlet ring seat, and an annular mesh groove is provided on the surface of the inlet ring seat.

[0008] Preferably, an air control pump is provided inside the mounting cover, and an air control valve port is provided at one end of the air control pump.

[0009] Preferably, four sides of the side of the oblique end cover are provided with gas delivery valve ports, and the inner wall of the oblique end cover is provided with a contraction inner oblique cover.

[0010] Preferably, a top connection ring airbag is provided inside the shrinkable inner oblique cover, and one end of the top connection ring airbag is fixedly connected to a top connection ring seat.

[0011] Preferably, a central valve seat is provided at the inner center of the ventilation side pipe, and end valve seats are provided at both ends of the bottom of the ventilation side pipe.

[0012] Preferably, annular fixing frames are provided at both ends of the stator frame, and a fixing ring rubber sleeve is provided inside the annular fixing frame.

[0013] Preferably, a ventilation ring frame is provided on the side of the driving shaft roller, a mounting ring seat is sleeved on the outer surface of the ventilation ring frame, and a dustproof ring net is provided on the surface of the ventilation ring frame.

[0014] Preferably, an air-uniform ring seat is provided at the center of the side surface of the outer shell, and air-uniform valve ports are provided on four sides of the side surface of the air-uniform ring seat.

[0015] Preferably, the outer shell is adapted to fit the ventilation side pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The switched reluctance motor with optimized air gap structure can make the equipment structure to perform all-round and efficient air gap optimization and adjustment operations between the internal rotor body and the stator frame. In actual use, the staff first installs the drive shaft roller and the rotor body to be used as a whole inside the stator frame, and then starts the air control pump inside the installation cover. The air control valve port of the air control pump performs an inflating operation to the inside of the air uniforming frame, and then the air uniforming frame performs a uniform flow distribution operation to the four sides, and continuously supplies air to the central valve seat in the center of the interior through the ventilation side pipes on the four sides of the outer shell. At this time, the airflow can be evenly inflated along the four groups of air-uniform valve ports of the air-uniform ring seat on the side of the outer shell, so that all the shrinkage airbags inside the outer shell can be inflated and retracted inward at the shrinkage cover of the annular sleeve, and the inflation and lifting operation can be directly performed on the adjusting stator at one end, so that the adjusting stator can be evenly positioned and slid inside the limiting slide evenly set on the side of the stator frame, so as to better control the distance between the adjusting stator and the rotor body inside the stator frame, meet the daily efficient optimization of the air gap of the switched reluctance motor, and reflect the practicality of the equipment design.

[0017] The switched reluctance motor with an optimized air gap structure further improves the overall usage effect of the device. During daily use, after the inflation and deflation control of the shrinkable airbag is completed through the central valve seat in the center of the air supply side pipe, the inflation control operation can be carried out at the end valve seats at both ends of the bottom of the air supply side pipe to the air supply valve openings on the four sides of the side of the inclined end cover. The four groups of air supply valve openings inflate the top contact ring airbag inside the two ends of the shrinkable inner inclined cover. The top contact ring airbag performs the adaptation top contact and fastening operation at the fastening ring rubber sleeve of the annular fixation at both ends of the stator frame through the top contact ring seat at one end, which also enables the limit fixing and fastening operation of the stator inside all the limit sliders, realizing the stable locking and fixing operation after optimizing the air gap. At the same time, the heat dissipation fan group on the back of the installation cover can be started for exhaust operation from the exhaust net cover during daily use, which also enables the air intake operation from the dust-proof ring net of the ventilation ring frame. And the ventilation ring frame and the dust-proof ring net can be quickly disassembled and maintained as a whole. The heat dissipation airflow performs a rapid annular eddy flow inside the outer shell, comprehensively ventilating and dissipating heat from all the switched reluctance motor components, and finally being inhaled from the annular mesh groove of the inlet ring seat at one end of the installation cover, and dissipating heat during the operation of the air control pump in the center of the installation cover, so as to enable the device to perform efficient operation and heat dissipation, providing continuous and efficient operation assistance for the switched reluctance motor, reflecting the comprehensiveness of the device design. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 is an overall schematic diagram of the stator frame structure of the present invention; Figure 3 is an overall schematic diagram of the outer shell structure of the present invention; Figure 4 is an overall schematic diagram of the air supply side pipe structure of the present invention; Figure 5 is an overall schematic diagram of the inclined end cover structure of the present invention; Figure 6 is an overall schematic diagram of the installation cover structure of the present invention; Figure 7 of the present invention Figure 1 is an enlarged schematic diagram of the structure at A in; Figure 8 of the present invention Figure 2 is an enlarged schematic diagram of the structure at B in.

[0019] In the figure: 1. Outer housing; 2. Driving shaft roller; 3. Rotor body; 4. Stator frame; 5. Limiting slide; 6. Adjusting stator; 7. Annular socket; 8. Shrinkage cover; 9. Shrinkage airbag; 10. Ventilation side pipe; 11. Oblique end cover; 12. Air equalizing frame; 13. Mounting cover; 14. Heat dissipation fan group; 15. Exhaust mesh cover; 16. Inlet ring seat; 17. Annular mesh groove; 18. Air control pump; 19. Air control valve port; 20. Air delivery valve port; 21. Shrinkage inner oblique cover; 22. Top connection ring airbag; 23. Top connection ring seat; 24. Central valve seat; 25. End valve seat; 26. Annular fixing frame; 27. Tightening ring rubber sleeve; 28. Ventilation ring frame; 29. Mounting ring seat; 30. Dust-proof ring net; 31. Air equalizing ring seat; 32. Air equalizing valve port. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1-8 , an embodiment provided by the present invention: A switched reluctance motor with an optimized air gap structure includes an outer housing 1. A driving shaft roller 2 is provided at the center inside the outer housing 1. A rotor body 3 is provided at one end of the driving shaft roller 2. An air gap adjustment component and a heat dissipation component are respectively provided inside and on the outer surface of the outer housing 1. The air gap adjustment component includes a stator frame 4. A stator frame 4 is sleeved on the outer surface of the rotor body 3. Limiting slides 5 are evenly arranged on the side surface of the stator frame 4. An adjustment limiting groove is formed inside the limiting slide 5. An adjusting stator 6 is movably connected inside the limiting slide 5. The adjusting stator 6 is adapted to the adjustment limiting groove. An annular socket 7 is provided on the inner wall of the outer housing 1. Shrinkage covers 8 are evenly arranged inside the annular socket 7. A shrinkage airbag 9 is provided inside the shrinkage cover 8. The shrinkage airbag 9 is movably and fittingly butted with the adjusting stator 6. The shrinkage airbag 9 is an inner-folded structure on the side surface. Annular fixing frames 26 are provided at both ends of the stator frame 4. A tightening ring rubber sleeve 27 is provided inside the annular fixing frame 26. A ventilation ring frame 28 is provided on the side surface of the driving shaft roller 2. A mounting ring seat 29 is sleeved on the outer surface of the ventilation ring frame 28; A dust-proof ring net 30 is provided on the surface of the ventilation ring frame 28. A uniform air ring seat 31 is provided at the center of the side surface of the outer housing 1. Uniform air valve openings 32 are provided on the four sides of the side surface of the uniform air ring seat 31. The outer housing 1 is adapted to the ventilation side pipe 10. Airflow can uniformly inflate inward along the four groups of uniform air valve openings 32 of the uniform air ring seat 31 on the side surface of the outer housing 1, so that all the shrinkage air bags 9 inside the outer housing 1 perform inward limiting inflation and telescopic operations at the shrinkage cover 8 of the annular socket 7, directly perform inflation and jacking operations on the adjusting stator 6 at one end, and enable the adjusting stator 6 to perform uniform positioning and sliding operations inside the uniform positioning slide frames 5 uniformly arranged on the side surface of the stator frame 4, thereby better controlling the distance between the adjusting stator 6 and the rotor body 3 inside the stator frame 4.

[0022] The heat dissipation component includes a ventilation side pipe 10. The ventilation side pipe 10 is fixedly connected to the four sides of the side surface of the outer housing 1. One end of the ventilation side pipe 10 is fixedly connected to an inclined end cover 11, and the other end of the ventilation side pipe 10 is fixedly connected to a uniform air frame 12. An installation cover 13 is provided on the back of the uniform air frame 12. A heat dissipation fan group 14 is provided on the back of the installation cover 13. An exhaust air net cover 15 is provided on the back of the heat dissipation fan group 14. One end of the installation cover 13 is fixedly connected to an inlet ring seat 16. An annular net groove 17 is provided on the surface of the inlet ring seat 16. A gas control pump 18 is provided inside the installation cover 13. A gas control valve opening 19 is provided at one end of the gas control pump 18. Air delivery valve openings 20 are provided on the four sides of the side surface of the inclined end cover 11. A shrinkage inner inclined cover 21 is provided on the inner wall of the inclined end cover 11. A top contact ring air bag 22 is provided inside the shrinkage inner inclined cover 21. A top contact ring seat 23 is fixedly connected to one end of the top contact ring air bag 22. A central valve seat 24 is provided at the center of the inside of the ventilation side pipe 10. End valve seats 25 are provided at both ends of the bottom of the ventilation side pipe 10. Start the heat dissipation fan group 14 on the back of the installation cover 13 to perform exhaust operations from the exhaust air net cover 15, so that daily suction operations can be performed from the dust-proof ring net 30 of the ventilation ring frame 28, and the ventilation ring frame 28 and the dust-proof ring net 30 as a whole can be quickly disassembled, replaced and maintained. The heat dissipation airflow performs rapid annular eddy flow inside the outer housing 1 to comprehensively ventilate and dissipate heat from all switched reluctance motor components.

[0023] Working principle: When in use, the operator first installs the driving shaft roller 2 and the rotor body 3 to be used as a whole inside the stator frame 4, and then starts the air control pump 18 inside the installation cover 13. An inflation operation is carried out from the air control valve port 19 of the air control pump 18 into the air distribution frame 12. Then, the air distribution frame 12 performs a uniform shunt operation to the four sides on the side, and through the ventilation side pipes 10 on the four sides of the outer shell 1, a continuous air supply operation is carried out to the central valve seat 24 at the center inside. At this time, the air flow can uniformly inflate into the inside along the four air distribution valve ports 32 of the air distribution ring seat 31 on the side of the outer shell 1, which also enables all the shrinkage air bags 9 inside the outer shell 1 to perform an inward limiting inflation and telescopic operation at the shrinkage cover 8 of the annular socket 7.

[0024] The shrinkage air bag 9 is designed with inner folding on the side, which can ensure that the telescopic distance at each end is in a reinforced state. The gas inside it is in a high-pressure state to ensure that it will not rebound under the external extrusion force. Then, an inflation and jacking operation is directly carried out on the adjusting stator 6 at one end, so that the adjusting stator 6 performs a uniform positioning sliding operation inside the limiting sliding frame 5 uniformly arranged on the side of the stator frame 4. An adjusting limiting groove is opened inside the limiting sliding frame 5, and the adjusting limiting groove performs fixed-point limiting when the adjusting stator 6 is adjusted, realizing that the air gap control range of the switched reluctance motor is 0.25 - 1.5 mm, so as to better control the distance between the adjusting stator 6 and the rotor body 3 inside the stator frame 4 and meet the daily efficient optimization use operation of the air gap of the switched reluctance motor.

[0025] During the daily use process, after the air supply and discharge control adjustment of the shrinkage air bag 9 is completed through the central valve seat 24 inside the ventilation side pipe 10, an inflation control operation can be carried out to the air supply valve ports 20 on the four sides of the inclined end cover 11 through the end valve seats 25 at both ends of the bottom of the ventilation side pipe 10. The four air supply valve ports 20 perform an inflation operation to the top contact ring air bag 22 inside the two ends of the shrinkage inner inclined cover 21. The top contact ring air bag 22 performs an adaptation top contact and fastening operation at the fastening ring rubber sleeve 27 of the annular fixing frame 26 at both ends of the stator frame 4 through the top contact ring seat 23 at one end, which also enables the adjusting stator 6 inside all the limiting sliding frames 5 to perform a limiting and fixing and fastening operation, realizing a stable locking and fixing operation after optimizing the air gap.

[0026] Meanwhile, the cooling fan group 14 on the back of the installation cover 13 can be started daily for exhausting air from the exhaust air net cover 15, which enables the suction operation from the dust-proof ring net 30 of the ventilation ring frame 28 daily. Moreover, the ventilation ring frame 28 and the dust-proof ring net 30 as a whole can be quickly disassembled, replaced and maintained. The cooling air flow rapidly circulates in a circular eddy within the outer housing 1 to comprehensively ventilate and cool all the switched reluctance motor components. Finally, the air is inhaled from the annular net groove 17 of the ring seat 16 at one end of the installation cover 13, and the air control pump 18 at the center inside the installation cover 13 is cooled during operation, so that the device can perform efficient operation and heat dissipation operations, and continuously and efficiently assist the operation of the switched reluctance motor. The above is the entire working principle of the present invention.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

Claims

1. A switched reluctance motor with an optimized air-gap structure, comprising a housing (1), characterized in that: A drive shaft roller (2) is arranged at the inner center of the outer shell (1). A rotor body (3) is arranged at one end of the drive shaft roller (2). An air gap adjustment component and a heat dissipation component are respectively arranged inside and on the outer surface of the outer shell (1). The air gap adjustment component includes a stator frame (4). The outer surface of the rotor body (3) is sleeved with the stator frame (4). Limiting sliding frames (5) are evenly arranged on the side surface of the stator frame (4). An adjustment limiting groove is formed inside the limiting sliding frame (5). An adjustment stator (6) is movably connected inside the limiting sliding frame (5). The adjustment stator (6) is adapted to the adjustment limiting groove. An annular socket (7) is arranged on the inner wall of the outer shell (1). Shrinkage covers (8) are evenly arranged inside the annular socket (7). A shrinkage airbag (9) is arranged inside the shrinkage cover (8). The shrinkage airbag (9) is movably and fittingly butted with the adjustment stator (6). The shrinkage airbag (9) is an inner-folded structure on the side surface; The heat dissipation component includes an air vent side tube (10). The four sides of the side surface of the outer shell (1) are fixedly connected with the air vent side tube (10). One end of the air vent side tube (10) is fixedly connected with an inclined end cover (11). The other end of the air vent side tube (10) is fixedly connected with a gas distribution frame (12). An installation cover (13) is arranged on the back of the gas distribution frame (12). A heat dissipation fan group (14) is arranged on the back of the installation cover (13). An exhaust net cover (15) is arranged on the back of the heat dissipation fan group (14).

2. The switched reluctance motor with an optimized air-gap structure according to claim 1, wherein: One end of the installation cover (13) is fixedly connected with an inlet ring seat (16). An annular mesh groove (17) is arranged on the surface of the inlet ring seat (16).

3. The switched reluctance motor with an optimized air-gap structure according to claim 1, characterized in that: A gas control pump (18) is arranged inside the installation cover (13). A gas control valve port (19) is arranged at one end of the gas control pump (18).

4. A switched reluctance motor with an optimized air gap structure according to claim 1, characterized in that: Gas transmission valve ports (20) are arranged on the four sides of the side surface of the inclined end cover (11). A shrinkage inner inclined cover (21) is arranged on the inner wall of the inclined end cover (11).

5. The switched reluctance motor with an optimized air gap structure according to claim 4, characterized in that: A top contact ring airbag (22) is arranged inside the shrinkage inner inclined cover (21). A top contact ring seat (23) is fixedly connected to one end of the top contact ring airbag (22).

6. The switched reluctance motor with an optimized air-gap structure according to claim 1, characterized in that: A central valve seat (24) is arranged at the inner center of the air vent side tube (10). End valve seats (25) are arranged at both ends of the bottom of the air vent side tube (10).

7. The switched reluctance motor with an optimized air gap structure according to claim 1, characterized in that: Annular fixing frames (26) are arranged at both ends of the stator frame (4). A fixing ring rubber sleeve (27) is arranged inside the annular fixing frame (26).

8. The switched reluctance motor with an optimized air gap structure according to claim 1, characterized in that: A ventilation ring frame (28) is arranged on the side surface of the drive shaft roller (2). An installation ring seat (29) is sleeved on the outer surface of the ventilation ring frame (28). A dust-proof ring net (30) is arranged on the surface of the ventilation ring frame (28).

9. A switched reluctance motor having an optimized air gap structure according to claim 1, characterized in that: A gas distribution ring seat (31) is arranged at the center of the side surface of the outer shell (1). Gas distribution valve ports (32) are arranged on the four sides of the side surface of the gas distribution ring seat (31).

10. A switched reluctance motor with an optimized air gap structure according to claim 1, characterized in that: The outer shell (1) is adapted to the air vent side tube (10).

Images