Permanent magnet synchronous motor and control system thereof

Abstract

The invention discloses a permanent magnet synchronous motor and a control system thereof, and the permanent magnet synchronous motor comprises a motor body, a cooling mechanism and a protection net assembly. The cooling mechanism is installed on the motor body, and the cooling mechanism comprises a plurality of first cooling fin groups, a plurality of cooling plates, a body condenser pipe, a protective cover, a cooling fan, a pair of spiral condenser pipes, and a shunting control box. The plurality of first radiating fin groups are uniformly fixed on the outer side wall of the motor body, and the tail end of the motor body is also fixedly provided with a plurality of second radiating fin groups. The plurality of cooling plates are uniformly fixed on the outer side wall of the motor body, and each cooling plate is arranged between every two first cooling fin groups. The machine body condensation pipe is installed on the motor body, and a plurality of loop pipes are arranged on the machine body condensation pipe and are respectively installed in the cooling plate. The protective net assembly is installed at one end of the protective cover away from the motor body. Through the related structural design, the heat dissipation effect of the motor is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of permanent magnet synchronous motors, and particularly relates to a permanent magnet synchronous motor and a control system thereof. BACKGROUND

[0002] A permanent magnet synchronous motor is a synchronous motor using a permanent magnet as a magnetic field source. It mainly consists of a stator, a rotor and a controller. When the permanent magnet synchronous motor is powered, the stator winding generates a rotating magnetic field. Due to the action of the stator magnetic field on the permanent magnet on the rotor, the rotor rotates synchronously with the rotating magnetic field of the stator. In this process, the interaction between the stator magnetic field and the rotor magnetic field generates torque, thereby realizing the function of converting electrical energy into mechanical energy.

[0003] During the operation of the permanent magnet synchronous motor, heat will be generated inside the motor. If this heat cannot be dissipated in time, it will cause the motor temperature to be too high, thereby affecting the service life and performance of the motor. High temperature may cause irreversible demagnetization of the permanent magnet, damage to the stator winding insulation, and even damage to the coil insulation layer, causing it to lose its insulation function. The existing synchronous motor basically installs a cooling fan at the tail of the motor to dissipate heat, but in high-temperature environments and high-load working environments of the motor, the cooling fan alone cannot meet the cooling needs of the motor.

[0004] In addition, after the synchronous motor is equipped with a cooling fan, a protective net is installed behind it. The existing protective net cannot be removed alone. After the motor operates for a long time, a large amount of dust will adhere to the cooling fan and the protective net, which will directly affect the cooling effect of the motor if not cleaned in time.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a permanent magnet synchronous motor and a control system thereof.

[0006] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general context in which the present application can be practiced. It is not admitted that this information constitutes prior art that is already known in the art. SUMMARY

[0007] The purpose of the present application is to provide a permanent magnet synchronous motor and a control system thereof, which can solve the problem of poor cooling effect of the existing permanent magnet synchronous motor.

[0008] In order to achieve the above-mentioned purpose, the technical scheme provided by an embodiment of the present application is as follows:

[0009] A permanent magnet synchronous motor and a control system thereof, comprising: a motor body, a cooling mechanism and a protective net assembly.

[0010] The cooling mechanism is installed on the motor machine body, and the cooling mechanism comprises a plurality of first radiating fin groups, a plurality of cooling plates, a machine body condensing pipe, a protective cover, a radiating fan, a pair of spiral condensing pipes and a shunt control box.

[0011] The protective net assembly is installed on the end of the protective cover away from the motor machine body, and the protective net assembly comprises a protective net installation slot, a protective net and a clamping assembly.

[0012] In an embodiment of the present application, the plurality of cooling plates are fixed with connecting blocks at one end close to the protective cover, and the plurality of connecting blocks and the protective cover are threadedly connected with bolts.

[0013] In an embodiment of the present application, the shunt control box is provided with an inlet and an outlet, a pair of first conduits is connected between the shunt control box and the control valve, and a pair of second conduits is connected between the shunt control box and the pair of spiral condensing pipes.

[0014] In an embodiment of the present application, the fixing assembly comprises a first clamping body, a second clamping body, a plurality of pairs of condenser pipe fixing grooves, a plurality of spacing rods and a pair of fixing plates. The first clamping body and the second clamping body are respectively arranged on both sides of a pair of spiral condenser pipes, and one end of the first clamping body and the second clamping body are rotatably connected to each other. A plurality of pairs of the condenser pipe fixing grooves are respectively arranged on the first clamping body and the second clamping body, and the spiral condenser pipes are clamped in the condenser pipe fixing grooves. A plurality of the spacing rods are respectively arranged between the plurality of pairs of condenser pipe fixing grooves and on both sides of the pair of spiral condenser pipes, and the plurality of spacing rods are connected to each other. A pair of the fixing plates are respectively fixed to one end of the first clamping body and the second clamping body away from the rotatable connection of the first clamping body and the second clamping body.

[0015] When it is necessary to install a pair of spiral condenser pipes into a protective cover through the fixing assembly. First, a plurality of spacing rods are installed between the pair of spiral condenser pipes, so that each spacing rod is supported between the pair of spiral condenser pipes, and the spacing rod prevents the pair of spiral condenser pipes from touching each other. Then, the first clamping body and the second clamping body are rotated to open, and the first clamping body and the second clamping body are respectively arranged on both sides of the pair of spiral condenser pipes. Then, the first clamping body and the second clamping body are rotated to close each other at the spacing rods, so that the spiral pipes on the pair of spiral condenser pipes are clamped in the condenser pipe fixing grooves on the first clamping body and the second clamping body, and the plurality of spacing rods are also arranged between each pair of condenser pipe fixing grooves. Then, the first clamping body and the second clamping body are fixed to the inner side wall of the protective cover through a pair of fixing plates. After the plurality of fixing assemblies are clamped with the spiral condenser pipes, the pair of spiral condenser pipes can be fixed in the protective cover.

[0016] In an embodiment of the present application, a clamping plate is fixed between each two adjacent condenser pipe fixing grooves on the first clamping body, a pair of clamping claws are fixed between each two adjacent condenser pipe fixing grooves on the second clamping body, and a pair of the clamping claws are respectively clamped on both sides of the clamping plate. When the first clamping body and the second clamping body are clamped on both sides of the pair of spiral condenser pipes, the plurality of pairs of clamping claws are respectively clamped on both sides of the plurality of clamping plates, so as to clamp the first clamping body and the second clamping body.

[0017] In an embodiment of the present application, the two ends of the spacing rod are respectively arranged in a pair of condenser pipe fixing grooves, and an arc-shaped groove is formed on each end of the spacing rod. When the first clamping body and the second clamping body are clamped on both sides of the pair of spiral condenser pipes, the two ends of the spacing rod are respectively arranged in a pair of condenser pipe fixing grooves on both sides, so as to clamp the spiral pipes of the pair of spiral condenser pipes in the condenser pipe fixing grooves. The arc-shaped groove makes the two ends of the spacing rod more closely abut on the spiral pipes of the pair of spiral condenser pipes.

[0018] In an embodiment of the present application, the clamping assembly comprises a plurality of grooves, a plurality of fixed shafts and a plurality of elliptical clamping blocks. The plurality of grooves are all excavated on the outer sidewall of the fixed ring, and the fixed ring is provided with a U-shaped clamp at the plurality of grooves. The plurality of U-shaped clamps are provided with an elliptical clamping groove on the side close to the protective net. The plurality of fixed shafts are all fixed on the sidewall of the protective net mounting groove, and the plurality of fixed shafts are all provided with a sliding rod slidingly on the fixed shaft. The U-shaped clamp is clamped on the fixed shaft. The plurality of elliptical clamping blocks are respectively fixed on one end of the plurality of sliding rods provided outside the fixed shaft, and the elliptical clamping blocks are clamped on the elliptical clamping groove.

[0019] When the protective net is installed into the protective net mounting groove, first, the plurality of elliptical clamping blocks are all rotated to a horizontal state, and then the protective net is installed into the protective net mounting groove. During installation, the plurality of grooves on the fixed ring are respectively corresponded to the position of each fixed shaft, so that the fixed shaft passes through the groove and the U-shaped clamp is clamped on the fixed shaft. When the fixed ring is installed into the protective net mounting groove, the elliptical clamping block also passes through the groove and moves to the outside of the elliptical clamping groove, and then the elliptical clamping block is pulled outward, so that the elliptical clamping block is moved away from the elliptical clamping groove, and then the elliptical clamping block is rotated by ninety degrees, and then the elliptical clamping block is pushed back to the elliptical clamping groove, so that the elliptical clamping block is clamped in the elliptical clamping groove. Thus, by clamping the elliptical clamping block in the elliptical clamping groove, the elliptical clamping block fixes the protective net and the fixed ring in the protective net mounting groove, and in addition, by clamping the U-shaped clamp on the fixed shaft, the protective net and the fixed ring are prevented from rotating in the protective net mounting groove. The minor axis of the elliptical clamping block is smaller than the width of the groove, so that the elliptical clamping block can pass through the groove, and the major axis of the elliptical clamping block is greater than the width of the groove, so that the elliptical clamping block can be clamped on the elliptical clamping groove.

[0020] In an embodiment of the present application, one end of the sliding rod provided in the fixed shaft is fixed with a limiting head, a spring is installed between the limiting head and the inner wall of the fixed shaft, and the spring is sleeved on the sliding rod. The elastic force of the spring is used to push the limiting head in the opposite direction of the elliptical clamping block, so that the limiting head pulls the elliptical clamping block in the direction of the fixed shaft through the sliding rod, so that the elliptical clamping block is clamped in the elliptical clamping groove.

[0021] In an embodiment of the present application, a cross clamping groove is excavated on the side of the fixed shaft close to the elliptical clamping block, a cross clamping block is fixed on the side of the elliptical clamping block close to the fixed shaft, and the cross clamping block is clamped in the cross clamping groove. By clamping the cross clamping block in the cross clamping groove, the elliptical clamping block is prevented from rotating when it is clamped in the elliptical clamping groove.

[0022] A control system of a permanent magnet synchronous motor, the control system comprises: a motor control system, a motor drive module, a temperature monitoring module and a cooling module, the cooling module comprises: a fan cooling control unit, a liquid cooling control unit and a cold air control unit. The motor control system controls the motor to run through the motor drive module, and the cooling module controls the cooling fan to run through the fan cooling control unit when the motor starts running, so that the cooling fan cools the motor body, and the temperature monitoring module monitors the temperature of the motor in real time during the operation of the motor, when the temperature of the motor continuously rises to the first warning line, the cooling module controls the shunt control box to deliver refrigerant into a pair of spiral condenser pipes through the cold air control unit, and the refrigeration of the spiral condenser pipes makes the wind blown by the cooling fan to the motor body into cold air. When the temperature monitoring module detects that the temperature of the motor rises to the second warning line, the cooling module controls the control valve to open through the liquid cooling control unit, and makes the shunt control box deliver refrigeration to the body condenser pipe, so that the body condenser pipe cools the cooling plate, and the cooling plate cools the motor body.

[0023] Compared with the prior art, the permanent magnet synchronous motor of the application effectively provides the heat dissipation effect of the motor by setting the heat dissipation fin group and the condenser pipe in cooperation, and further accelerates the heat dissipation effect of the heat dissipation fin group by installing the spiral condenser pipe in the protective cover, so that the wind blown by the heat dissipation fan to the heat dissipation fin group becomes cold air.

[0024] The control system of the application effectively controls the air cooling and water cooling of the motor for heat dissipation according to the temperature of the synchronous motor, and reduces the energy waste. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a perspective view of a permanent magnet synchronous motor in an embodiment of the application;

[0027] Figure 2 It is a structural schematic view of a motor body in an embodiment of the application;

[0028] Figure 3 It is a structural schematic view of a protective cover in an embodiment of the application;

[0029] Figure 4 It is a structural schematic view of a fixed assembly in an embodiment of the application;

[0030] Figure 5 Structure diagram of the fixed assembly in an embodiment of the present application in an open state;

[0031] Figure 6 Structure diagram of the protective cover and protective net assembly in an embodiment of the present application;

[0032] Figure 7 Structure diagram of the protective net and the fixed ring in an embodiment of the present application; Figure 6 Structure diagram of the structure shown in A in the embodiment of the present application;

[0033] Figure 8 Structure diagram of the protective net and the fixed ring in an embodiment of the present application;

[0034] Figure 9 Structure diagram of the elliptical clamping block and the sliding rod in an embodiment of the present application;

[0035] Figure 10 Schematic diagram of the motor control system in an embodiment of the present application.

[0036] Main figure mark explanation:

[0037] 1-motor body, 2-cooling mechanism, 201-first fin group, 202-cooling plate, 203-body condenser pipe, 204-second fin group, 205-protective cover, 206-connection block, 207-bolt, 208-shunt control box, 209-first conduit, 210-radiator fan, 211-spiral condenser pipe, 212-fixed assembly, 213-control valve, 214-second conduit, 215-liquid inlet, 216-liquid outlet, 217-first clamping body, 218-second clamping body, 219-condenser pipe fixing groove, 220-clamping plate, 221-clamping jaw, 222-spacing rod, 223-arc-shaped groove, 224-fixing plate, 225-circuit pipe, 3-protective net assembly, 301-protective net installation groove, 302-protective net, 303-fixed ring, 304-groove, 305-U-shaped clamping hoop, 306-elliptical clamping slot, 307-fixed shaft, 308-sliding rod, 309-elliptical clamping block, 310-limiting head, 311-spring, 312-cross clamping slot, 313-cross clamping block. DETAILED DESCRIPTION

[0038] In order to make the person skilled in the art better understand the technical solutions in the present disclosure, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present disclosure.

[0039] As Figures 1 to 9 shown, a permanent magnet synchronous motor and its control system in an embodiment of the present application, comprising: motor body 1, cooling mechanism 2 and protective net assembly 3.

[0040] As Figures 1 to 3 shown, cooling mechanism 2 is installed on the motor body 1, and the cooling mechanism 2 comprises: a plurality of first fin groups 201, a plurality of cooling plates 202, a body condenser pipe 203, a protective cover 205, a cooling fan 210, a pair of spiral condenser pipes 211 and a shunt control box 208. A plurality of first fin groups 201 are uniformly fixed on the outer side wall of the motor body 1, and a plurality of second fin groups 204 are also fixed on the tail end of the motor body 1. A plurality of cooling plates 202 are uniformly fixed on the outer side wall of the motor body 1, and each cooling plate 202 is arranged between every two first fin groups 201. The body condenser pipe 203 is installed on the motor body 1, and a plurality of loop pipes 225 are arranged on the body condenser pipe 203, and the plurality of loop pipes 225 are respectively installed in the cooling plates 202. The control valve 213 is fixed on the motor body 1 near the head end, and the body condenser pipe 203 is connected to the control valve 213 at both ends. The protective cover 205 is fixed on the tail end of the motor body 1, and the cooling fan 210 and the pair of spiral condenser pipes 211 are installed in the protective cover 205. A plurality of fixing assemblies 212 are fixed between the pair of spiral condenser pipes 211 and the protective cover 205, and the shunt control box 208 is fixed on the outer side wall of the protective cover 205, which is used to transport refrigerant in the spiral condenser pipe 211 and the body condenser pipe 203.

[0041] The device needs to connect the shunt control box 208 refrigerant delivery device before running. When the motor is running, first through the operation of the cooling fan 210 to the direction of the motor body 1 air supply, the wind through the protective cover 205 drainage along the gap between each first fin group 201 and second fin group 204 blade flow, thereby making the first fin group 201 and second fin group 204 to the motor body 1 cooling. When the motor body 1 temperature is too high, through the shunt control box 208 to the spiral condenser tube 211 and the body condenser tube 203 respectively deliver refrigerant. First refrigerant delivery to the spiral condenser tube 211, the spiral condenser tube 211 to the air in the protective cover 205 cooling, thereby reducing the temperature of the cooling fan 210 to the motor body 1 blowing wind. By reducing the temperature of the blowing wind to improve the first fin group 201 and second fin group 204 to the motor body 1 cooling effect. In addition, the shunt control box 208 will deliver refrigerant to the body condenser tube 203, the body condenser tube 203 through the circuit tube 225 to the cooling plate 202 cooling, between the cooling plate 202 to the motor body 1 cooling. By reducing the temperature of the spiral condenser tube 211 blowing fan 210 to the motor body 1 wind and cooling plate 202 between the cooling effect of the motor body 1, to improve the cooling effect of the motor body 1, so as to ensure the temperature of the motor running.

[0042] As shown in Figures 6 to 9 The protective cover 205 is installed on the motor body 1, the protective cover 205 includes the protective cover installation groove 206, the protective cover 205 and the protective cover installation groove 206 between the protective cover 205 through the clamping assembly fixed. The protective cover installation groove 206 is opened in the motor body 1, the protective cover 205 is installed in the protective cover installation groove 206. The protective cover 205 outside is fixed with the fixed ring 207. The protective cover 205 and the protective cover installation groove 206 between through the clamping assembly fixed.

[0043] As shown in Figures 1 to 3As shown, the plurality of cooling plates 202 are fixed with connecting blocks 206 near one end of the protective cover 205, and the plurality of connecting blocks 206 are threadedly connected with the protective cover 205 through bolts 207. The connecting blocks 206 and the protective cover 205 are both drilled with threaded holes matched with the bolts 207, and then the bolts 207 are screwed in the threaded holes to fix the protective cover 205 to the tail end of the motor body 1. The shunt control box 208 is provided with an inlet 215 and an outlet 216, and is connected with a pair of first conduits 209 between the control valve 213 and a pair of second conduits 214 between the shunt control box 208 and a pair of spiral condensing pipes 211. The inlet 215 and the outlet 216 are used to connect to external refrigerant delivery devices, and the shunt control box 208 is connected with the body condensing pipe 203 through the pair of first conduits 209 to make the refrigerant circulate in the body condensing pipe 203. The shunt control box 208 is connected with the pair of spiral condensing pipes 211 through the pair of second conduits 214 to make the refrigerant circulate in the pair of spiral condensing pipes 211.

[0044] As shown in Figures 4 to 5 The fixing assembly 212 includes a first clamping body 217, a second clamping body 218, a plurality of pairs of condensing pipe fixing grooves 219, a plurality of spacing rods 222 and a pair of fixing plates 224. The first clamping body 217 and the second clamping body 218 are respectively installed on both sides of the pair of spiral condensing pipes 211, and one end of the first clamping body 217 and the second clamping body 218 are rotatably connected with each other. The plurality of pairs of condensing pipe fixing grooves 219 are respectively arranged on the first clamping body 217 and the second clamping body 218, and the spiral condensing pipes 211 are clamped in the condensing pipe fixing grooves 219. The plurality of spacing rods 222 are respectively arranged between the plurality of pairs of condensing pipe fixing grooves 219 and on both sides of the pair of spiral condensing pipes 211, and the plurality of spacing rods 222 are connected with each other. The pair of fixing plates 224 are respectively fixed to one end of the first clamping body 217 and the second clamping body 218 away from the rotatable connection of the first clamping body 217 and the second clamping body 218.

[0045] When the pair of spiral condenser pipes 211 need to be installed into the protective cover 205 through the fixing assembly 212. First, the plurality of spacing rods 222 are installed between the pair of spiral condenser pipes 211, so that each spacing rod 222 is supported between the pair of spiral condenser pipes 211, and the pair of spiral condenser pipes 211 are prevented from touching each other through the support of the spacing rods 222. Then, the first clamping body 217 and the second clamping body 218 are rotated to be opened, and the first clamping body 217 and the second clamping body 218 are arranged on both sides of the pair of spiral condenser pipes 211 respectively, then the first clamping body 217 and the second clamping body 218 are rotated to be closed to each other at the spacing rods 222, so that the spiral pipes on the pair of spiral condenser pipes 211 are clamped in the condenser pipe fixing slots 219 on the first clamping body 217 and the second clamping body 218 respectively, and the plurality of spacing rods 222 are arranged between each pair of condenser pipe fixing slots 219 respectively, then the first clamping body 217 and the second clamping body 218 are fixed to the inner side wall of the protective cover 205 through the pair of fixing plates 224. After the plurality of fixing assemblies 212 are clamped with the spiral condenser pipes 211, the pair of spiral condenser pipes 211 can be fixed in the protective cover 205.

[0046] As shown in Figures 4 to 5 , the first clamping body 217 is fixed with the clamping plate 220 between each two adjacent condenser pipe fixing slots 219, and the second clamping body 218 is fixed with a pair of clamping claws 221 between each two adjacent condenser pipe fixing slots 219, and the pair of clamping claws 221 are clamped on both sides of the clamping plate 220 respectively. When the first clamping body 217 and the second clamping body 218 are clamped on both sides of the pair of spiral condenser pipes 211, the first clamping body 217 and the second clamping body 218 are clamped through the plurality of pairs of clamping claws 221 clamped on both sides of the plurality of clamping plates 220 respectively. The two ends of the spacing rod 222 are arranged in the pair of condenser pipe fixing slots 219 respectively, and the arc-shaped slots 223 are opened on the two ends of the spacing rod 222 arranged on both ends of the pair of condenser pipe fixing slots 219 respectively. When the first clamping body 217 and the second clamping body 218 are clamped on both sides of the pair of spiral condenser pipes 211, the two ends of the spacing rod 222 are arranged in the pair of condenser pipe fixing slots 219 on both sides respectively, so that the spiral pipes of the pair of spiral condenser pipes 211 are clamped in the condenser pipe fixing slots 219. The two ends of the spacing rod 222 are more closely placed on the spiral pipes of the pair of spiral condenser pipes 211 through the opening of the arc-shaped slots 223.

[0047] As shown in Figures 6 to 9As shown, the clamping assembly comprises a plurality of grooves 304, a plurality of fixed shafts 307 and a plurality of elliptical clamping blocks 309. The plurality of grooves 304 are all excavated on the outer sidewall of the fixed ring 303, and the U-shaped clamps 305 are fixed on the fixed ring 303 at the plurality of grooves 304. The plurality of U-shaped clamps 305 are provided with elliptical clamping grooves 306 on the side close to the protective net 302. The plurality of fixed shafts 307 are all fixed on the sidewall of the protective net mounting groove 301, and the sliding rods 308 are slidingly arranged on the plurality of fixed shafts 307. The U-shaped clamps 305 are clamped on the fixed shafts 307. The plurality of elliptical clamping blocks 309 are respectively fixed on one end of the plurality of sliding rods 308 outside the fixed shafts 307, and the elliptical clamping blocks 309 are clamped on the elliptical clamping grooves 306.

[0048] When the protective net 302 is installed into the protective net mounting groove 301, first, the plurality of elliptical clamping blocks 309 are all rotated to the horizontal state, and then the protective net 302 is installed into the protective net mounting groove 301. During installation, the plurality of grooves 304 on the fixed ring 303 are respectively corresponded to the position of each fixed shaft 307, so that the fixed shafts 307 pass through the grooves 304 and the U-shaped clamps 305 are clamped on the fixed shafts 307. When the fixed ring 303 is installed into the protective net mounting groove 301, the elliptical clamping blocks 309 also pass through the grooves 304 and move to the outside of the elliptical clamping grooves 306, and then the elliptical clamping blocks 309 are pulled outwards, so that the elliptical clamping blocks 309 are moved away from the elliptical clamping grooves 306, and then the elliptical clamping blocks 309 are rotated by ninety degrees, and then the elliptical clamping blocks 309 are pushed back to the elliptical clamping grooves 306, so that the elliptical clamping blocks 309 are clamped in the elliptical clamping grooves 306. In this way, the elliptical clamping blocks 309 are clamped in the elliptical clamping grooves 306, so that the elliptical clamping blocks 309 fix the protective net 302 and the fixed ring 303 in the protective net mounting groove 301. In addition, the U-shaped clamps 305 are clamped on the fixed shafts 307, so that the protective net 302 and the fixed ring 303 are prevented from rotating in the protective net mounting groove 301. The minor axis of the elliptical clamping blocks 309 is smaller than the width of the grooves 304, so that the elliptical clamping blocks 309 can pass through the grooves 304. The major axis of the elliptical clamping blocks 309 is larger than the width of the grooves 304, so that the elliptical clamping blocks 309 can be clamped on the elliptical clamping grooves 306.

[0049] As Figures 6 to 9As shown, a limiting head 310 is fixed to one end of the slide rod 308 inside the fixed shaft 307. A spring 311 is installed between the limiting head 310 and the inner wall of the fixed shaft 307, and the spring 311 is sleeved on the slide rod 308. The elastic force of the spring 311 is used to push the limiting head 310 in the opposite direction to the elliptical locking block 309, so that the limiting head 310 pulls the elliptical locking block 309 towards the fixed shaft 307 through the slide rod 308, thereby locking the elliptical locking block 309 in the elliptical locking groove 306. A cross-shaped locking groove 312 is chiseled on the side of the fixed shaft 307 near the elliptical locking block 309, and a cross-shaped locking block 313 is fixed on the side of the elliptical locking block 309 near the fixed shaft 307, and the cross-shaped locking block 313 is locked in the cross-shaped locking groove 312. By locking the cross-shaped locking block 313 in the cross-shaped locking groove 312, the elliptical locking block 309 is prevented from rotating when locked in the elliptical locking groove 306.

[0050] like Figure 10 As shown, a control system for a permanent magnet synchronous motor includes: a motor control system, a motor drive module, a temperature monitoring module, and a cooling module. The cooling module includes: an air-cooling control unit, a liquid-cooling control unit, and a cold air control unit. The motor control system controls the motor's operation via the motor drive module. Simultaneously with the motor's start-up, the cooling module controls the cooling fan 210 via the air-cooling control unit to provide air cooling to the motor body 1. During motor operation, the temperature monitoring module monitors the motor's temperature in real time. When the motor temperature continues to rise and reaches the first warning threshold, the cooling module controls the distribution control box 208 via the cold air control unit to deliver refrigerant to a pair of spiral condenser tubes 211. The cooling effect of the spiral condenser tubes 211 transforms the air blown by the cooling fan 210 onto the motor body 1 into cold air. When the temperature monitoring module detects that the motor temperature has risen to the second warning line, the cooling module will control the control valve 213 to open through the liquid cooling control unit, and cause the flow control box 208 to deliver the cooling to the condenser pipe 203 of the motor body. The condenser pipe 203 of the motor body will cool the cooling plate 202, and the cooling plate 202 will cool the motor body 1.

[0051] Working principle: The motor control system controls the motor to run through the motor drive module. At the same time the motor starts running, the cooling module first controls the cooling fan 210 to run through the air cooling control unit. The cooling fan 210 sends air to the motor body 1. The air flows through the protective cover 205 along the gap between the blades of each first heat sink group 201 and second heat sink group 204, thereby dissipating heat from the motor body 1 through the first heat sink group 201 and the second heat sink group 204.

[0052] The temperature monitoring module monitors the temperature of the motor in real time. When the temperature of the motor continuously rises to the first warning line, the cooling module controls the shunt control box 208 to deliver refrigerant to a pair of spiral condensing pipes 211 through the cold air control unit. After the refrigerant is delivered to the spiral condensing pipes 211, the spiral condensing pipes 211 cool the air in the protective cover 205, thereby reducing the temperature of the air blown out by the heat dissipation fan 210 to the motor body 1. By reducing the temperature of the air blown out, the heat dissipation effect of the first heat sink group 201 and the second heat sink group 204 on the motor body 1 is improved.

[0053] When the temperature monitoring module detects that the temperature of the motor rises again to the second warning line, the cooling module controls the control valve 213 to open through the liquid cooling control unit, and makes the shunt control box 208 deliver refrigeration to the body condensing pipe 203. The body condensing pipe 203 cools the cooling plate 202 through the loop pipe 225, so that the cooling plate 202 cools the motor body 1. By reducing the temperature of the air blown by the heat dissipation fan 210 to the motor body 1 through the spiral condensing pipe 211 and the cooling effect of the cooling plate 202 on the motor body 1, the cooling effect on the motor body 1 is improved, thereby ensuring the temperature operation of the motor.

[0054] It is apparent for those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and the present disclosure can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present disclosure. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present disclosure is defined by the appended claims rather than the above description, and it is intended to include all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be considered as limiting the claims to which they relate.

[0055] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A permanent magnet synchronous motor, characterized in that, include: Motor body; A cooling mechanism, installed on the motor body, includes: multiple sets of first heat sinks, multiple cooling plates, a motor body condenser tube, a protective cover, a cooling fan, a pair of spiral condenser tubes, and a flow control box. Multiple sets of first heat sinks are evenly fixed to the outer wall of the motor body. Multiple sets of second heat sinks are also fixed to the tail end of the motor body. Multiple cooling plates are evenly fixed to the outer wall of the motor body, with each cooling plate positioned between every two sets of first heat sinks. The motor body condenser tube is installed on the motor body and has multiple return pipes installed on it. These return pipes are installed within the cooling plates. A control valve is fixed near the head end of the motor body, and both ends of the motor body condenser tube are connected to the control valve. The protective cover is fixed to the tail end of the motor body. The cooling fan and the pair of spiral condenser tubes are installed inside the protective cover. Multiple fixing components are fixed between the pair of spiral condenser tubes and the protective cover. The flow control box is fixed to the outer wall of the protective cover and is used to supply refrigerant to the spiral condenser tubes and the motor body condenser tubes. and A protective net assembly is installed at the end of the protective cover away from the motor body. The protective net assembly includes a protective net mounting groove, a protective net, and a clamping assembly. The protective net mounting groove is carved at the end of the protective cover away from the motor body. The protective net is installed in the protective net mounting groove. A fixing ring is fixed on the outside of the protective net. The protective net and the protective net mounting groove are fixed together by the clamping assembly.

2. The permanent magnet synchronous motor according to claim 1, characterized in that, Each of the cooling plates has a connecting block fixed to one end near the protective cover, and the connecting blocks and the protective cover are connected by bolts.

3. A permanent magnet synchronous motor according to claim 2, characterized in that, The diversion control box is provided with an inlet and an outlet. A pair of first conduits connect the diversion control box to the control valve, and a pair of second conduits connect the diversion control box to a pair of spiral condenser tubes.

4. A permanent magnet synchronous motor according to claim 1, characterized in that, The fixing component includes: The first clamp and the second clamp are respectively installed on both sides of a pair of spiral condenser tubes, and one end of the first clamp and the second clamp are rotatably connected to each other. Multiple pairs of condenser tube fixing slots are respectively provided on the first clamp and the second clamp, and the spiral condenser tube is clamped in the condenser tube fixing slot; Multiple spacer rods are respectively disposed between multiple pairs of condenser tube fixing slots, and on both sides of a pair of spiral condenser tubes; the multiple spacer rods are interconnected; and A pair of fixing plates are respectively fixed to the end of the first clamp and the second clamp away from the rotatable connection between the first clamp and the second clamp.

5. A permanent magnet synchronous motor according to claim 4, characterized in that, The first clamping body has a clamping plate fixed between every two adjacent condenser pipe fixing slots, and the second clamping body has a pair of clamping claws fixed between every two adjacent condenser pipe fixing slots, with the pair of clamping claws respectively clamping onto both sides of the clamping plate.

6. A permanent magnet synchronous motor according to claim 5, characterized in that, The two ends of the spacer are respectively located in a pair of condenser tube fixing grooves, and the spacer is provided with arc-shaped grooves at both ends of the pair of condenser tube fixing grooves.

7. A permanent magnet synchronous motor according to claim 1, characterized in that, The clamping assembly includes: Multiple grooves are carved into the outer wall of the fixing ring. U-shaped clamps are fixed at multiple grooves on the fixing ring. Each of the U-shaped clamps has an elliptical groove on the side near the protective net. Multiple fixed shafts (307) are fixed to the side wall of the protective netting installation groove. Each of the fixed shafts has a sliding rod slidably mounted on it, and the U-shaped clamp is secured to the fixed shaft. Multiple elliptical blocks are fixed to one end of multiple sliding rods located outside the fixed shaft, and the elliptical blocks are engaged in elliptical slots.

8. A permanent magnet synchronous motor according to claim 7, characterized in that, A limiting head is fixed at one end of the slide rod inside the fixed shaft. A spring is installed between the limiting head and the inner wall of the fixed shaft, and the spring is sleeved on the slide rod.

9. A permanent magnet synchronous motor according to claim 8, characterized in that, A cross groove is chiseled on the side of the fixed shaft near the elliptical locking block, and a cross locking block is fixed on the side of the elliptical locking block near the fixed shaft, with the cross locking block locked in the cross groove.

10. A control system for a permanent magnet synchronous motor according to any one of claims 1-9, the control system comprising: The system includes a motor control system, a motor drive module, a temperature monitoring module, and a cooling module. The cooling module includes an air-cooled control unit, a liquid-cooled control unit, and a cold air control unit.

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