CN112953116A - Energy-saving self-excited three-phase asynchronous motor - Google Patents
Energy-saving self-excited three-phase asynchronous motor Download PDFInfo
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- CN112953116A CN112953116A CN202110160460.0A CN202110160460A CN112953116A CN 112953116 A CN112953116 A CN 112953116A CN 202110160460 A CN202110160460 A CN 202110160460A CN 112953116 A CN112953116 A CN 112953116A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters
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Abstract
The invention belongs to the technical field of motors, and particularly relates to an energy-saving self-excited three-phase asynchronous motor which comprises a shell, a stator, a rotor and a heat dissipation box, wherein an output shaft is rotatably connected to the position, in the central axis of the shell, in the shell; the surface of the middle part of the output shaft is fixedly connected with a rotor, and one side of the rotor, which is far away from the output shaft, is provided with a stator; the inner wall of the shell is fixedly connected with heat dissipation boxes in an annular design at the upper end and the lower end of the rotor, and piston plates in an annular design are connected in the heat dissipation boxes in a sliding mode; the surface of one side, far away from the rotor, of the piston plate is fixedly connected with a connecting ring, and the surface of one side, far away from the rotor, of the connecting ring is designed to be an inclined surface, so that the vertical heights of the connecting ring are different; one side of the heat dissipation box, which is far away from the rotor, is provided with a poke rod which is horizontally arranged; the invention effectively combines the liquid cooling mode and the air cooling mode, thereby greatly reducing the internal temperature of the motor, enhancing the heat dissipation effect of the motor, reducing the internal loss of the motor and improving the operation efficiency of the motor.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to an energy-saving self-excited three-phase asynchronous motor.
Background
The three-phase asynchronous motor is a motor powered by a 380V three-phase alternating current power supply (with 120-degree phase difference), and the rotor and the stator of the three-phase asynchronous motor rotate at different rotating speeds in the same direction, so that the three-phase asynchronous motor is called as a three-phase asynchronous motor. Compared with single-phase asynchronous motor, the three-phase asynchronous motor has simple structure, convenient manufacture, good running performance, saving of various materials and low price.
Along with the continuous development of the economy of china, the motor becomes the indispensable electrical equipment in each field, the motor is long-time, high frequency work back, stator and rotor are because a large amount of heats that the vortex produced, and the temperature is higher, the winding direct current resistance of stator or rotor is the bigger, during the same current, the loss is big more, if these heats are not in time effluvium, then can weaken the working effect of motor, and long-time high temperature work will directly influence the life-span of the used insulating material of motor, and the output of restriction motor, can lead to the motor to burn out when serious.
In the prior art, the heat dissipation of the motor can be divided into liquid cooling and air cooling, wherein the liquid cooling mainly utilizes the flowing of cooling oil by filling the cooling oil in the motor to dissipate heat, but the mass filling of the cooling oil is easy to increase the overall quality of the motor and influence the use of the motor; at present, the heat dissipation of the motor is realized mostly by arranging a heat dissipation fan at the end part of the motor, and driving air to flow through the fan to realize the cooling of the interior of the motor, for example, a chinese patent with application number CN202010926065.4 discloses an energy-saving self-excited three-phase asynchronous motor, which comprises a self-excited motor, a motor shaft, a motor front-mounted support plate, a motor rear-mounted support plate, a frequency converter, a binding post, a motor outer heat dissipation plate, a motor front heat dissipation device, a motor rear heat dissipation device and a motor fixing base, and the cooling of the motor is realized through a heat dissipation structure at the front side and the rear. On one hand, in the structure, the cover plate is usually arranged between the fan and the stator and the rotor, so that the fan has limited heat dissipation effect on the stator and the rotor, and the running efficiency of the motor is influenced; on the other hand, the fan needs to be connected with the outside in an open mode through the fan cover or the dustproof net, so that the waterproof effect of the motor is poor, the motor is not suitable for the environment with liquid, and the use range of the motor is reduced.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that in the prior art, a motor cooling fan is difficult to dissipate heat in a large quantity, the energy consumption loss is large, the running efficiency of the motor is influenced, the fan needs to be in open connection with the outside through a fan cover or a dustproof net, the waterproof effect of the motor is poor, and the use range of the motor is reduced, the invention provides the energy-saving self-excited three-phase asynchronous motor.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an energy-saving self-excited three-phase asynchronous motor which comprises a shell, a stator, a rotor and a heat dissipation box, wherein the shell is designed in a cylindrical hollow structure, heat dissipation fins are uniformly arranged on the outer surface of the shell, and a junction box is arranged on the outer surface of one end of the shell; an output shaft is rotatably connected to the position, in the central axis of the shell, of the interior of the shell, and one end of the output shaft penetrates through the inner wall of the shell; the surface of the middle part of the output shaft is fixedly connected with a rotor, one side of the rotor, which is far away from the output shaft, is provided with a stator, the stator and the rotor are correspondingly arranged, and the stator is fixedly connected with the shell; the heat dissipation device comprises a shell, a rotor, a heat dissipation box, a piston plate, springs and a heat dissipation box, wherein the heat dissipation box is fixedly connected to the upper end and the lower end of the rotor on the inner wall of the shell in an annular design; the surface of one side, far away from the rotor, of the piston plate is fixedly connected with a connecting ring, and the surface of one side, far away from the rotor, of the connecting ring is designed to be an inclined surface, so that the vertical heights of the connecting ring are different; one side of the heat dissipation box, which is far away from the rotor, is provided with a horizontally placed poke rod, one end of the poke rod is fixedly connected with the output shaft, and the other end of the poke rod is in contact with the surface of one side of the connecting ring, which is far away from the heat dissipation box, so that the spring is in a normal state when the poke rod is in contact with the position with the lowest vertical height of the connecting ring; the connecting ring is connected with the inner wall of the heat dissipation box in a sealing and sliding manner, the space of one side of the piston plate, which is far away from the rotor, is filled with cooling oil, and the space of one side of the piston plate, which is far away from the rotor, is communicated with guide grooves formed in the shell and the stator; the heat dissipation box is provided with uniformly distributed air holes on the surface of one side, opposite to the rotor, of the heat dissipation box, the air holes are designed towards the stator and the rotor, and cooling devices are arranged in spaces of one side, opposite to the rotor, of the piston plate;
when the heat dissipation box works, an inner rotor of the motor rotates relative to the stator, the stator and the rotor generate a large amount of heat due to eddy current, meanwhile, the rotor rotates to drive the output shaft to rotate, the output shaft drives the poking rod to rotate, and one end of the poking rod is in contact with the surface of one side, far away from the heat dissipation box, of the connecting ring, so that the connecting ring and the piston plate are driven to slide up and down in the heat dissipation box when; when the poke rod rotates to a position with a larger vertical height of the connecting ring, the poke rod extrudes the connecting ring to slide towards the direction close to the rotor, the connecting ring drives the piston plate to slide towards the direction close to the rotor, and meanwhile, the piston plate extrudes the gas in the space at one side of the piston plate relative to the rotor to spray out to cool the stator and the rotor; when the poke rod rotates to a position where the vertical height of the connecting ring is smaller, the piston plate slides to a space on one side far away from the rotor under the action of the pulling force of the spring, the volume of the space on one side of the piston plate relative to the rotor is increased, hot air outside the heat dissipation box is absorbed and enters the space on one side of the piston plate relative to the rotor, and the hot air is cooled by the cooling device and then is sprayed outwards when the piston plate slides to the direction close to the rotor again; the motor heat dissipation device comprises a stator, a rotor, a piston plate, a guide groove, a cooling oil and a sealing cover, wherein the stator and the rotor are arranged in the guide groove, the cooling oil is arranged in the space, far away from the rotor, of the piston plate, the piston plate is arranged on the side, far away from the rotor, of the piston plate, the cooling oil is driven to continuously flow in the guide groove when the piston plate slides, and the cooling oil is sprayed out from the space.
Preferably, the position where the poke rod is contacted with the surface of one side, far away from the rotor, of the connecting ring is rotatably connected with balls which are uniformly distributed; the during operation, the frictional resistance between poker rod and the go-between is great, and easy damage poker rod and go-between after long-time work can change sliding friction into rolling friction through setting up the ball, effectively reduces the frictional resistance between poker rod and the go-between, increases the smoothness degree and the operating efficiency of device motion, improves the life of poker rod and go-between.
Preferably, the cooling device comprises a condensing sheet, the condensing sheet is integrally designed in an annular shape, the condensing sheet is made of elastic metal materials, and two sides of the condensing sheet are fixedly connected with the side surface of the piston plate, which is opposite to one side of the rotor, and the inner wall of the heat dissipation box respectively; the number of the condensing sheets is two, the vertical sections of the two condensing sheets are in an inverted splayed design, the surfaces of the condensing sheets are in a corrugated design, cavities are formed in the inner parts of the condensing sheets, and liquid condensing agents are filled in the cavities; when the heat dissipation box works, hot gas entering the heat dissipation box is condensed and cooled through the condensing sheet, and the surface of the condensing sheet is in a corrugated design, so that the contact area of the condensing sheet and the hot gas can be increased, and the condensing effect of the condensing sheet is increased; on the other hand condensation piece surface is the ductility that the corrugated design can effectively improve the condensation piece, and the piston plate pulling condensation piece of being convenient for moves, and drives the condensation piece when the piston plate slides and takes place tensile vibration, and then the air flow around the condensation piece with higher speed effectively improves its heat exchange efficiency.
Preferably, the air hole is in a funnel shape, and the caliber of one end of the air hole, which is opposite to the rotor, is smaller than the caliber of one end of the air hole, which is far away from the rotor; when the heat dissipation box works, the air holes are designed in a funnel shape, when hot air enters the heat dissipation box through the air holes, the hot air enters a larger space from one end with a smaller caliber, and the hot air is convenient to diffuse to the periphery, so that the contact area and the contact time of the hot air and the condensation sheet are increased, and the heat exchange efficiency of the heat dissipation box is improved; when gas after condensation is sprayed out from the air holes, the gas enters the smaller end from the end with the larger caliber, so that the gas is convenient to assemble, the gas flow rate and the impact force of the gas when the gas is sprayed out of the heat dissipation box are improved, and the cooling effect on the stator and the rotor is effectively improved.
Preferably, the inner wall of one side of the heat dissipation box, which is opposite to the rotor, is fixedly connected with a water absorption cotton layer; when the cooling device works, when high-temperature gas enters the heat dissipation box and contacts with the condensing sheet for cooling, part of hot gas can be vaporized to generate water vapor, and the water absorption cotton layer is arranged to absorb the water vapor when the gas is sprayed out, so that the water vapor is prevented from being sprayed onto the stator and the rotor to influence the normal operation of the stator and the rotor; meanwhile, when the heat dissipation box absorbs hot air again, the hot air is firstly contacted with the water absorption cotton layer, so that water in the water absorption cotton layer absorbs heat and evaporates, the temperature of the hot air entering the heat dissipation box is reduced, the internal loss of the condensation piece is reduced, and the service life of the condensation piece is prolonged.
Preferably, the outer surface of the heat dissipation box is fixedly connected with a heat insulation layer, and the heat insulation layer is used for reducing the internal loss of the heat dissipation box; during operation, stator and rotor give off a large amount of heats for the easy heat absorption of heat dissipation box outer wall leads to the fact heat dissipation box bulk temperature too high, reduces the cooling effect to getting into the inside steam of heat dissipation box, through setting up the insulating layer, can maintain the bulk temperature of heat dissipation box, reduces the inside internal loss of heat dissipation box, improves the life of condensation piece.
The invention has the following beneficial effects:
1. the invention relates to an energy-saving self-excited three-phase asynchronous motor, which is characterized in that a heat dissipation box, a connecting ring and a poke rod are arranged, so that an output shaft drives the poke rod to rotate, the connecting ring and a piston plate are driven to slide up and down in the heat dissipation box when the poke rod rotates, the stator and the rotor are effectively radiated by continuously absorbing external hot air of the heat dissipation box and spraying cooled air through a space on one side of the piston plate relative to the rotor, and simultaneously, cooling oil in a space on one side of the piston plate far away from the rotor is driven to continuously flow in a guide groove when the piston plate slides, so that the stator is effectively radiated. Meanwhile, the end part of the motor can be designed in a sealing manner, so that the application range of the motor is enlarged.
2. According to the energy-saving self-excited three-phase asynchronous motor, the condensing sheet is arranged, hot gas entering the heat dissipation box is condensed and cooled through the condensing sheet, and the surface of the condensing sheet is corrugated, so that on one hand, the contact area between the condensing sheet and the hot gas can be increased, and the condensing effect of the condensing sheet is increased; on the other hand condensation piece surface is the ductility that the corrugated design can effectively improve the condensation piece, and the piston plate pulling condensation piece of being convenient for moves, and drives the condensation piece when the piston plate slides and takes place tensile vibration, and then the air flow around the condensation piece with higher speed effectively improves its heat exchange efficiency.
3. According to the energy-saving self-excited three-phase asynchronous motor, the water-absorbing cotton layer is arranged, when high-temperature gas enters the heat dissipation box and contacts with the condensation sheet for cooling, part of hot gas can be vaporized to generate water vapor, and the water-absorbing cotton layer can absorb the water vapor when the gas is sprayed out, so that the water vapor is prevented from being sprayed onto the stator and the rotor to influence the normal operation of the stator and the rotor; meanwhile, when the heat dissipation box absorbs hot air again, the hot air is firstly contacted with the water absorption cotton layer, so that water in the water absorption cotton layer absorbs heat and evaporates, the temperature of the hot air entering the heat dissipation box is reduced, the internal loss of the condensation piece is reduced, and the service life of the condensation piece is prolonged.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
in the figure: the heat-insulating water-absorbing device comprises a shell 1, a stator 11, a rotor 12, a heat radiating fin 13, a junction box 14, an output shaft 15, a poking rod 16, a guide groove 17, a ball 18, a heat radiating box 2, a piston plate 21, a spring 22, a connecting ring 23, an air hole 24, a condensing sheet 25, a cavity 26, a water-absorbing cotton layer 3 and a heat-insulating layer 4.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 3, the energy-saving self-excited three-phase asynchronous motor comprises a casing 1, a stator 11, a rotor 12 and a heat dissipation box 2, wherein the casing 1 is designed in a cylindrical hollow structure, heat dissipation fins 13 are uniformly arranged on the outer surface of the casing 1, and a junction box 14 is arranged on the outer surface of one end of the casing 1; an output shaft 15 is rotatably connected to the position of the central axis of the shell 1 in the shell 1, and one end of the output shaft 15 penetrates through the inner wall of the shell 1; the middle surface of the output shaft 15 is fixedly connected with a rotor 12, one side of the rotor 12, which is far away from the output shaft 15, is provided with a stator 11, the stator 11 is arranged corresponding to the rotor 12, and the stator 11 is fixedly connected with the shell 1; the heat dissipation box 2 in an annular design is fixedly connected to the upper end and the lower end of the rotor 12 of the inner wall of the shell 1, a piston plate 21 in an annular design is connected to the interior of the heat dissipation box 2 in a sliding mode, and springs 22 which are uniformly arranged are fixedly connected between the side face, away from the rotor 12, of the piston plate 21 and the inner wall of the heat dissipation box 2; the surface of one side, far away from the rotor 12, of the piston plate 21 is fixedly connected with a connecting ring 23, and the surface of one side, far away from the rotor 12, of the connecting ring 23 is designed to be an inclined surface, so that the vertical heights of the connecting ring 23 are different; a poke rod 16 which is horizontally arranged is arranged on one side of the heat dissipation box 2, which is far away from the rotor 12, one end of the poke rod 16 is fixedly connected with the output shaft 15, and the other end of the poke rod is contacted with the surface of one side of the connecting ring 23, which is far away from the heat dissipation box 2, so that the spring 22 is in a normal state when the poke rod 16 is contacted with the position with the lowest vertical height of the connecting ring 23; the connecting ring 23 is connected with the inner wall of the heat dissipation box 2 in a sealing and sliding manner, the space on one side of the piston plate 21, which is far away from the rotor 12, is filled with cooling oil, and the space on one side of the piston plate 21, which is far away from the rotor 12, is communicated with the guide grooves 17 formed in the shell 1 and the stator 11; the heat dissipation box 2 is provided with air holes 24 uniformly distributed on the surface of one side opposite to the rotor 12, the air holes 24 are designed towards the stator 11 and the rotor 12, and a cooling device is arranged in the space of one side of the piston plate 21 opposite to the rotor 12;
when the heat dissipation box 2 works, the inner rotor 12 of the motor rotates relative to the stator 11, the stator 11 and the rotor 12 generate a large amount of heat due to eddy currents, meanwhile, the rotor 12 rotates to drive the output shaft 15 to rotate, the output shaft 15 drives the poking rod 16 to rotate, and one end of the poking rod 16 is in contact with the surface of one side, far away from the heat dissipation box 2, of the connecting ring 23, so that the connecting ring 23 and the piston plate 21 are driven to slide up and down in the heat dissipation box 2 when the; when the poke rod 16 rotates to a position where the vertical height of the connecting ring 23 is larger, the poke rod 16 extrudes the connecting ring 23 to slide towards the direction close to the rotor 12, the connecting ring 23 drives the piston plate 21 to slide towards the direction close to the rotor 12, and meanwhile, the piston plate 21 extrudes the gas in the space at one side of the piston plate 21 relative to the rotor 12 to spray out to cool the stator 11 and the rotor 12; when the poke rod 16 rotates to a position where the vertical height of the connecting ring 23 is smaller, the piston plate 21 slides to a space on one side far away from the rotor 12 under the action of the pulling force of the spring 22, the volume of the space on one side of the piston plate 21 relative to the rotor 12 is increased, the hot air outside the heat dissipation box 2 is absorbed and enters the space on one side of the piston plate 21 relative to the rotor 12, and the hot air is cooled by the cooling device and then is sprayed outwards when the piston plate 21 slides to a direction close to the rotor 12 again; the motor repeatedly moves, the stator 11 and the rotor 12 are effectively radiated by continuously absorbing hot air outside the heat dissipation box 2 and spraying cooled air through the space on one side of the piston plate 21 relative to the rotor 12, and meanwhile, the piston plate 21 drives cooling oil in the space on one side of the piston plate 21 far away from the rotor 12 to continuously flow in the guide groove 17 when sliding, so that the stator 11 is effectively radiated.
As an embodiment of the present invention, the position where the poker rod 16 contacts with the surface of the connecting ring 23 on the side far away from the rotor 12 is rotatably connected with the balls 18 which are uniformly arranged; during operation, the friction resistance between the poke rod 16 and the connecting ring 23 is large, the poke rod 16 and the connecting ring 23 are easy to damage after long-time operation, sliding friction can be changed into rolling friction by arranging the balls 18, the friction resistance between the poke rod 16 and the connecting ring 23 is effectively reduced, the smoothness and the operation efficiency of device movement are increased, and the service lives of the poke rod 16 and the connecting ring 23 are prolonged.
As an embodiment of the present invention, the cooling device includes a condensing sheet 25, the condensing sheet 25 is designed to be annular, the condensing sheet 25 is made of elastic metal material, and two sides of the condensing sheet 25 are fixedly connected to a side surface of the piston plate 21 opposite to the rotor 12 and an inner wall of the heat dissipation box 2, respectively; the number of the condensing sheets 25 is two, the vertical sections of the two condensing sheets 25 are in an inverted splayed design, the surfaces of the condensing sheets 25 are in a corrugated design, a cavity 26 is formed in each condensing sheet 25, and a liquid condensing agent is filled in each cavity 26; when the heat dissipation box 2 works, hot air entering the heat dissipation box 2 is condensed and cooled through the condensing sheet 25, and the surface of the condensing sheet 25 is in a corrugated design, so that on one hand, the contact area between the condensing sheet 25 and the hot air can be increased, and the condensing effect of the condensing sheet 25 is increased; on the other hand condensation sheet 25 surface is the ductility that the design of ripple shape can effectively improve condensation sheet 25, and the piston plate 21 of being convenient for pulls condensation sheet 25 and moves, and drives condensation sheet 25 when piston plate 21 slides and take place tensile vibration, and then the air flow around condensation sheet 25 with higher speed, effectively improves its heat exchange efficiency.
As an embodiment of the present invention, the air hole 24 is funnel-shaped, and the aperture of the end of the air hole 24 opposite to the rotor 12 is smaller than the aperture of the end of the air hole 24 far from the rotor 12; when the heat dissipation box 2 works, the air holes 24 are in a funnel-shaped design, when hot air enters the heat dissipation box 2 through the air holes 24, the hot air enters a larger space from one end with a smaller caliber, and the hot air is convenient to diffuse to the periphery, so that the contact area and the contact time of the hot air and the condensing sheet 25 are increased, and the heat exchange efficiency is improved; when the gas after condensation is sprayed out from the air hole 24, the gas enters the smaller end from the end with the larger caliber, so that the gas is convenient to gather, the gas flow rate and the impact force when the gas is sprayed out of the heat dissipation box 2 are improved, and the cooling effect on the stator 11 and the rotor 12 is effectively improved.
As an embodiment of the invention, a water-absorbing cotton layer 3 is fixedly connected to the inner wall of the heat dissipation box 2 at one side relative to the rotor 12; when the cooling device works, when high-temperature gas enters the heat dissipation box 2 and contacts with the condensing sheet 25 for cooling, part of hot gas can be vaporized to generate water vapor, the water absorption cotton layer 3 is arranged to absorb the water vapor in the gas when the gas is sprayed out, and the water vapor is prevented from being sprayed onto the stator 11 and the rotor 12 to influence the normal operation of the stator and the rotor; meanwhile, when the heat dissipation box 2 absorbs the hot air again, the hot air is firstly contacted with the water absorption cotton layer 3, so that the water inside the water absorption cotton layer 3 absorbs heat and evaporates, the temperature of the hot air entering the heat dissipation box 2 is reduced, the internal loss of the condensation sheet 25 is reduced, and the service life of the condensation sheet 25 is prolonged.
As an embodiment of the invention, the outer surface of the heat dissipation box 2 is fixedly connected with a heat insulation layer 4, and the heat insulation layer 4 is used for reducing the internal loss inside the heat dissipation box 2; during operation, stator 11 and rotor 12 give off a large amount of heats for 2 outer walls of heat dissipation box easily absorb heat and cause 2 bulk temperatures of heat dissipation box too high, reduce the cooling effect to getting into 2 inside steam of heat dissipation box, through setting up insulating layer 4, can maintain the bulk temperature of heat dissipation box 2, reduce the inside internal loss of heat dissipation box 2, improve condensation piece 25's life.
The specific working process of the invention is as follows:
when the heat dissipation box 2 works, the inner rotor 12 of the motor rotates relative to the stator 11, the stator 11 and the rotor 12 generate a large amount of heat due to eddy currents, meanwhile, the rotor 12 rotates to drive the output shaft 15 to rotate, the output shaft 15 drives the poking rod 16 to rotate, and one end of the poking rod 16 is in contact with the surface of one side, far away from the heat dissipation box 2, of the connecting ring 23, so that the connecting ring 23 and the piston plate 21 are driven to slide up and down in the heat dissipation box 2 when the; the balls 18 arranged on the poke rod 16 can convert sliding friction into rolling friction, reduce the friction resistance between the poke rod 16 and the connecting ring 23, increase the smoothness and the operating efficiency of the device movement, and prolong the service life of the poke rod 16 and the connecting ring 23; when the poke rod 16 rotates to a position where the vertical height of the connecting ring 23 is larger, the poke rod 16 extrudes the connecting ring 23 to slide towards the direction close to the rotor 12, the connecting ring 23 drives the piston plate 21 to slide towards the direction close to the rotor 12, and meanwhile, the piston plate 21 extrudes the gas in the space at one side of the piston plate 21 relative to the rotor 12 to spray out to cool the stator 11 and the rotor 12; when the poke rod 16 rotates to a position where the vertical height of the connecting ring 23 is smaller, the piston plate 21 slides to a space on one side far away from the rotor 12 under the action of the pulling force of the spring 22, the volume of the space on one side of the piston plate 21 relative to the rotor 12 is increased, the heat outside the heat dissipation box 2 is absorbed and enters the space on one side of the piston plate 21 relative to the rotor 12, and the heat entering the heat dissipation box 2 is condensed and cooled by the condensing sheet 25, and because the surface of the condensing sheet 25 is in a corrugated design, on one hand, the contact area of the condensing sheet 25 and the heat can be increased, and the condensing effect of the condensing; on the other hand, the surface of the condensing sheet 25 is corrugated, so that the ductility of the condensing sheet 25 can be effectively improved, the piston plate 21 can conveniently pull the condensing sheet 25 to move, the piston plate 21 drives the condensing sheet 25 to generate stretching vibration when sliding, the air flow around the condensing sheet 25 is further accelerated, the heat exchange efficiency of the condensing sheet is effectively improved, and the cooled gas is sprayed outwards when the piston plate 21 slides towards the direction close to the rotor 12 again; the motor repeatedly moves, the stator 11 and the rotor 12 are effectively radiated by continuously absorbing hot air outside the heat dissipation box 2 and spraying cooled air through the space on one side of the piston plate 21 relative to the rotor 12, and meanwhile, the piston plate 21 drives cooling oil in the space on one side of the piston plate 21 far away from the rotor 12 to continuously flow in the guide groove 17 when sliding, so that the stator 11 is effectively radiated.
Meanwhile, the air holes 24 are designed in a funnel shape, when hot air enters the heat dissipation box 2 through the air holes 24, the hot air enters a larger space from one end with a smaller caliber, and the hot air is convenient to diffuse to the periphery, so that the contact area and the contact time of the hot air and the condensing sheet 25 are increased, and the heat exchange efficiency is improved; when the condensed gas is sprayed out of the gas hole 24, the gas enters the smaller end from the end with the larger caliber, so that the gas is convenient to gather, the gas flow rate and the impact force when the gas is sprayed out of the heat dissipation box 2 are improved, and the cooling effect on the stator 11 and the rotor 12 is effectively improved; meanwhile, when high-temperature gas enters the heat dissipation box 2 and contacts with the condensation sheet 25 for cooling, part of hot gas can be vaporized to generate water vapor, the water absorption cotton layer 3 is arranged to absorb the water vapor in the gas when the gas is sprayed out, and the water vapor is prevented from being sprayed onto the stator 11 and the rotor 12 to influence the normal operation of the stator and the rotor; when the heat dissipation box 2 absorbs the hot air again, the hot air is firstly contacted with the absorbent cotton layer 3, so that the moisture in the absorbent cotton layer 3 absorbs heat and evaporates, the temperature of the hot air entering the heat dissipation box 2 is reduced, the internal loss of the condensation sheet 25 is reduced, and the service life of the condensation sheet 25 is prolonged; meanwhile, when the motor works, the stator 11 and the rotor 12 emit a large amount of heat, so that the outer wall of the heat dissipation box 2 is easy to absorb heat to cause the overall temperature of the heat dissipation box 2 to be too high, the cooling effect of hot gas entering the inside of the heat dissipation box 2 is reduced, the overall temperature of the heat dissipation box 2 can be maintained by arranging the heat insulation layer 4, the internal loss of the heat dissipation box 2 is reduced, and the service life of the condensing sheet 25 is prolonged.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An energy-saving self-excited three-phase asynchronous motor is characterized in that: the heat dissipation structure comprises a shell (1), a stator (11), a rotor (12) and a heat dissipation box (2), wherein the shell (1) is designed to be a cylindrical hollow structure, heat dissipation fins (13) are uniformly arranged on the outer surface of the shell (1), and a junction box (14) is arranged on the outer surface of one end of the shell (1); an output shaft (15) is rotatably connected to the position of the central axis of the shell (1) in the shell (1), and one end of the output shaft (15) penetrates through the inner wall of the shell (1); the middle surface of the output shaft (15) is fixedly connected with a rotor (12), a stator (11) is arranged on one side, away from the output shaft (15), of the rotor (12), the stator (11) and the rotor (12) are arranged correspondingly, and the stator (11) is fixedly connected with the shell (1); the heat dissipation box (2) in an annular design is fixedly connected to the upper end and the lower end of the rotor (12) on the inner wall of the shell (1), a piston plate (21) in an annular design is connected to the inner portion of the heat dissipation box (2) in a sliding mode, and springs (22) which are uniformly arranged are fixedly connected between the side face, away from the rotor (12), of one side of the piston plate (21) and the inner wall of the heat dissipation box (2); the surface of one side, far away from the rotor (12), of the piston plate (21) is fixedly connected with a connecting ring (23), and the surface of one side, far away from the rotor (12), of the connecting ring (23) is designed to be an inclined surface, so that the vertical heights of the connecting ring (23) are different; one side, far away from the rotor (12), of the heat dissipation box (2) is provided with a poke rod (16) which is horizontally placed, one end of the poke rod (16) is fixedly connected with the output shaft (15), and the other end of the poke rod is in contact with the surface of one side, far away from the heat dissipation box (2), of the connecting ring (23), so that the spring (22) is in a normal state when the poke rod (16) is in contact with the position, with the lowest vertical height, of the connecting ring (23); the connecting ring (23) is connected with the inner wall of the heat dissipation box (2) in a sealing and sliding manner, cooling oil is filled in the space on one side, away from the rotor (12), of the piston plate (21), and the space on one side, away from the rotor (12), of the piston plate (21) is communicated with guide grooves (17) formed in the shell (1) and the stator (11); the heat dissipation box (2) is seted up evenly distributed's gas hole (24) for one side surface of rotor (12), gas hole (24) all design towards stator (11) and rotor (12), piston plate (21) all is equipped with cooling device in for one side space of rotor (12).
2. An energy-saving self-excited three-phase asynchronous motor as claimed in claim 1, wherein: the position where the poke rod (16) is contacted with the surface of one side of the connecting ring (23) far away from the rotor (12) is rotationally connected with uniformly arranged balls (18).
3. An energy-saving self-excited three-phase asynchronous motor as claimed in claim 1, wherein: the cooling device comprises a condensing sheet (25), the condensing sheet (25) is integrally designed in an annular shape, the condensing sheet (25) is made of elastic metal materials, and two sides of the condensing sheet (25) are fixedly connected with the side surface of the piston plate (21) opposite to one side of the rotor (12) and the inner wall of the heat dissipation box (2) respectively; the number of the condensing sheets (25) is two, the vertical sections of the two condensing sheets (25) are designed in an inverted splayed shape, the surface of each condensing sheet (25) is designed in a corrugated shape, a cavity (26) is formed in each condensing sheet (25), and a liquid condensing agent is filled in each cavity (26).
4. An energy-saving self-excited three-phase asynchronous motor as claimed in claim 1, wherein: the air hole (24) is designed in a funnel shape, and the caliber of one end, relative to the rotor (12), of the air hole (24) is smaller than that of one end, far away from the rotor (12), of the air hole (24).
5. An energy-saving self-excited three-phase asynchronous motor as claimed in claim 1, wherein: the inner wall of one side of the heat dissipation box (2) relative to the rotor (12) is fixedly connected with a water absorption cotton layer (3).
6. An energy-saving self-excited three-phase asynchronous motor as claimed in claim 5, wherein: the outer surface of the heat dissipation box (2) is fixedly connected with a heat insulation layer (4), and the heat insulation layer (4) is used for reducing internal loss inside the heat dissipation box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160460.0A CN112953116A (en) | 2021-02-05 | 2021-02-05 | Energy-saving self-excited three-phase asynchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160460.0A CN112953116A (en) | 2021-02-05 | 2021-02-05 | Energy-saving self-excited three-phase asynchronous motor |
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| Publication Number | Publication Date |
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| CN112953116A true CN112953116A (en) | 2021-06-11 |
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| CN202110160460.0A Withdrawn CN112953116A (en) | 2021-02-05 | 2021-02-05 | Energy-saving self-excited three-phase asynchronous motor |
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| JP2012151930A (en) * | 2011-01-17 | 2012-08-09 | Toyota Motor Corp | Cooling device for motor |
| CN205792035U (en) * | 2016-06-01 | 2016-12-07 | 江西双威电机有限公司 | The threephase asynchronous machine that a kind of good heat dissipation effect safety is high |
| CN107689710A (en) * | 2017-10-20 | 2018-02-13 | 南京泓凯动力系统科技有限公司 | A kind of piston exhaust gas heat exchanging formula automobile permanent magnet synchronous motor |
| CN208061804U (en) * | 2018-03-27 | 2018-11-06 | 浙江红彤电气有限公司 | A kind of cooling device for dry-type transformer |
| CN110798023A (en) * | 2019-11-08 | 2020-02-14 | 陈启 | Motor manufacturing method and motor |
| CN210074580U (en) * | 2019-08-25 | 2020-02-14 | 福州永虹电力设备有限公司 | Batch meter that radiating effect is good |
| CN110829722A (en) * | 2020-01-13 | 2020-02-21 | 成都微精电机股份公司 | Low-loss cooling structure used inside motor |
| CN112134408A (en) * | 2020-09-07 | 2020-12-25 | 江瀛 | Energy-saving self-excited three-phase asynchronous motor |
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2021
- 2021-02-05 CN CN202110160460.0A patent/CN112953116A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012151930A (en) * | 2011-01-17 | 2012-08-09 | Toyota Motor Corp | Cooling device for motor |
| CN205792035U (en) * | 2016-06-01 | 2016-12-07 | 江西双威电机有限公司 | The threephase asynchronous machine that a kind of good heat dissipation effect safety is high |
| CN107689710A (en) * | 2017-10-20 | 2018-02-13 | 南京泓凯动力系统科技有限公司 | A kind of piston exhaust gas heat exchanging formula automobile permanent magnet synchronous motor |
| CN208061804U (en) * | 2018-03-27 | 2018-11-06 | 浙江红彤电气有限公司 | A kind of cooling device for dry-type transformer |
| CN210074580U (en) * | 2019-08-25 | 2020-02-14 | 福州永虹电力设备有限公司 | Batch meter that radiating effect is good |
| CN110798023A (en) * | 2019-11-08 | 2020-02-14 | 陈启 | Motor manufacturing method and motor |
| CN110829722A (en) * | 2020-01-13 | 2020-02-21 | 成都微精电机股份公司 | Low-loss cooling structure used inside motor |
| CN112134408A (en) * | 2020-09-07 | 2020-12-25 | 江瀛 | Energy-saving self-excited three-phase asynchronous motor |
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Application publication date: 20210611 |