CN215897418U

CN215897418U - Squirrel-cage motor stator structure convenient to cool

Info

Publication number: CN215897418U
Application number: CN202122043826.4U
Authority: CN
Inventors: 谈玉春; 谈文杰; 谈红叶; 徐林
Original assignee: Changzhou Kejie Plastic Casing Co ltd
Current assignee: Changzhou Kejie Plastic Casing Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-02-22
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses a squirrel-cage motor stator structure convenient to cool, which has the technical scheme key points that: the device comprises a shell, wherein a fixing ring is fixedly arranged on the outer circle wall surface of the shell, an end cover is arranged on one side of the shell, and a through hole is formed in one side of the end cover; the stator is arranged inside the shell, and a rotor is sleeved inside the stator; the anticreep subassembly sets up the inside of stator for prevent the leak, the anticreep subassembly includes a plurality of wire casing, a plurality of the wire casing is all seted up the interior round wall of stator, the movable cover of interior round wall of stator is equipped with the guard ring, the outer wall fixed mounting of guard ring has a plurality of fixed block, avoids the leak transmission to appear in the coil through the insulating layer of wire inslot portion and the inside insulating paper of draw-in groove, carries on spacing avoiding coil and stator core to rub through the fixed block between to the coil, leads to the leak transmission to appear between coil and the stator core, promotes motor performance.

Description

Squirrel-cage motor stator structure convenient to cool

Technical Field

The utility model relates to the technical field of motor structures, in particular to a squirrel-cage motor stator structure convenient to cool.

Background

The squirrel-cage motor has a simple structure and is widely applied to various fields of daily life, factory equipment, ports and docks, oil fields and coal mines and the like. The squirrel-cage motor rotor is provided with squirrel-cage conductive bars, a rotating magnetic field can be formed after three-phase alternating current is applied to a stator winding, and closed conductive bars on the rotor can generate potential and current due to electromagnetic induction so that the rotor rotates in the magnetic field.

For example, chinese patent publication No. CN201726241U proposes an electric spindle with a cooling structure of a stator of a squirrel cage motor, in which a squirrel cage cooling channel is disposed on a box to cool the stator of the motor, and a front bearing seat cast integrally with the box is used to provide a support for a front bearing assembly, which not only eliminates a water sealing sleeve, reduces the radial dimension of the electric spindle, but also facilitates ensuring the coaxiality of the electric spindle system and improving the rotation precision of the electric spindle, but in this scheme, it is unavoidable that the electric leakage caused by the friction between the coil and the stator affects the performance of the motor, and for example, chinese patent publication No. CN206585445U proposes a squirrel cage motor, in which an air gap spoiler is disposed in the motor, when the air flow in the air gap flows in the axial direction, more air flow flows to a second radial ventilation slot of the stator due to the blockage of the spoiler, in other words, the air flow in the air gap is reduced, the air flow in the radial ventilation grooves can be increased, cold air in the radial ventilation grooves exchanges heat with the stator and the rotor, the heat dissipation and cooling of the motor are effectively achieved, in the same scheme, electric leakage caused by friction of the coil and the stator cannot be avoided, and therefore the squirrel-cage motor stator structure convenient to cool is provided.

SUMMERY OF THE UTILITY MODEL

In view of the problems mentioned in the background, it is an object of the present invention to provide a squirrel cage motor stator structure that facilitates cooling to solve the problems mentioned in the background.

The technical purpose of the utility model is realized by the following technical scheme:

a squirrel cage motor stator structure that facilitates cooling, comprising: the device comprises a shell, a fixing ring is fixedly mounted on the outer circle wall surface of the shell, an end cover is arranged on one side of the shell, and a through hole is formed in one side of the end cover; the stator is arranged inside the shell, and a rotor is sleeved inside the stator; anticreep subassembly sets up the inside of stator for prevent the leak, anticreep subassembly includes a plurality of wire casing, a plurality of the wire casing is all seted up the interior round wall of stator, the insulating layer is installed to the inner wall of wire casing, the interior round wall movable sleeve of stator is equipped with the guard ring, the outer wall fixed mounting of guard ring has a plurality of fixed block, the draw-in groove is seted up to the top surface of fixed block, and draw-in groove internally mounted has insulating paper, the position of fixed block with the position of wire casing is corresponding.

Through adopting above-mentioned technical scheme, through setting up anticreep subassembly, after the staff supplies power for the motor, coil circular telegram through wire casing inside produces magnetic field this moment, drive the rotor through magnetic field and rotate, can lead to the insulating varnish on coil surface to break away from the leak after the coil circular telegram, influence the motor performance, avoid the coil to appear the leak transmission through the insulating layer of wire casing inside and the inside insulating paper of draw-in groove, simultaneously in the motor operation process, the coil can lead to the insulating varnish on coil surface to break away from with wire casing friction equally, carry on spacing avoiding the coil and the stator core friction through the fixed block to the coil, lead to the leak transmission to appear between coil and the stator core, promote the motor performance.

Preferably, a fixing plate is fixedly mounted on the inner circular wall surface of the casing, a fixing hole is formed in one side of the fixing plate, a bearing is fixedly mounted on the inner circular wall surface of the fixing hole, and a rotating shaft of the rotor is sleeved inside an inner ring of the bearing.

Through adopting above-mentioned technical scheme, through setting up the bearing, when the rotor rotated, can reduce the frictional force of rotor axis of rotation and fixed orifices through the bearing, promoted the life of rotor.

Preferably, the outer circle wall surface of the stator is provided with a cooling mechanism for cooling the stator.

Through adopting above-mentioned technical scheme, through setting up cooling body, when the motor is when the function, the electric current produces the heat in stator internally mounted's coil, does not handle the heat and can lead to the inside high temperature of motor, leads to coil resistivity sharply to rise, causes the too much consumption of electric energy, cools down the stator through cooling body, avoids the consumption of unnecessary electric energy.

Preferably, the cooling mechanism includes: the cooling sleeve is arranged on the outer circumferential wall surface of the stator, and two liquid injection holes are formed in the outer circumferential wall surface of the cooling sleeve; the two mounting holes are formed in the outer circle wall surface of the shell and correspond to the liquid injection hole in position; the cooling box, the cooling box sets up the excircle wall of casing, the bottom surface fixed mounting of cooling box has two pipes, the pipe passes the mounting hole extends to annotate the inside in liquid hole.

Through adopting above-mentioned technical scheme, through setting up the cooler bin, the internally mounted of pipe has miniature pump, and the inside of cooling jacket is inputed to the coolant liquid of cooler bin inside through the pipe and is cooled down to the stator, makes the coolant liquid flow at the internal circulation of cooler bin through two miniature pumps, promotes cooling efficiency.

Preferably, the cooling mechanism further comprises: the temperature display screen is fixedly arranged on one side of the cooling box, and the monitoring end of the temperature display screen is arranged in the cooling box; the liquid feeding hole is formed in the top surface of the cooling box, and a liquid feeding pipe is fixedly installed on the inner circle wall surface of the liquid feeding hole.

Through adopting above-mentioned technical scheme, through setting up the temperature display screen, the temperature of coolant liquid can be known to staff's accessible temperature display screen, and when cooling temperature was too high, the coolant liquid was added to the accessible liquid feeding pipe, has avoided the coolant liquid evaporation to finish, can't cool off the stator, improves the practicality.

Preferably, one side of the casing is provided with a plurality of ventilation holes, and the inside of the ventilation holes is fixedly provided with a dustproof block.

Through adopting above-mentioned technical scheme, through setting up the ventilation hole, make external air current enter into the inside of casing through the ventilation hole, dispel the heat to the axis body of rotor, avoid the dust to enter into the inside of bearing through setting up dustproof block, reduce the life of motor.

Preferably, one side of the fixing ring is provided with two threaded holes, one side of the end cover is provided with two connecting holes, the positions of the connecting holes correspond to those of the threaded holes, a fixing column is sleeved inside each connecting hole, and the fixing column penetrates through the threads of the connecting holes and extends to the inner circular wall surface of each threaded hole.

Through adopting above-mentioned technical scheme, through setting up the fixed column, when the staff need maintain the motor, make the end cover break away from one side of solid fixed ring and get off through rotating the fixed column, make things convenient for the staff to maintain casing inside.

In summary, the utility model mainly has the following beneficial effects:

through setting up anticreep subassembly, after the staff supplies power for the motor, coil circular telegram through wire casing inside produces magnetic field this moment, drive the rotor through magnetic field and rotate, can lead to the insulated paint on coil surface to break away from the leak after the coil circular telegram, influence the motor performance, avoid the coil leak transmission to appear through the insulating paper of wire casing inside insulating layer and draw-in groove inside, simultaneously in motor operation process, the coil can lead to the insulated paint on coil surface to break away from with the wire casing friction equally, carry on spacing avoiding the coil and the stator core friction through the fixed block to the coil, lead to the leak transmission to appear between coil and the stator core, promote the motor performance.

Through setting up the cooler bin, the internally mounted of pipe has miniature pump, the inside of cooling jacket is input to the coolant liquid of cooler bin inside through the pipe is cooled down to the stator, make the coolant liquid flow at the internal circulation of cooler bin through two miniature pumps, promote cooling efficiency, through setting up temperature display screen, the temperature of coolant liquid can be known to staff's accessible temperature display screen, when cooling temperature was too high, the coolant liquid was added to the accessible liquid feeding pipe, avoid the coolant liquid to evaporate, can't cool off the stator, and the high practicality is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the case of the present invention in a disassembled configuration;

FIG. 3 is a schematic view of the cooling box structure of the present invention;

FIG. 4 is a schematic view of the cooling jacket structure of the present invention.

Reference numerals: 1. a housing; 2. a fixing ring; 3. an end cap; 4. a stator; 5. a rotor; 6. a wire slot; 7. a guard ring; 8. a fixed block; 9. a fixing plate; 10. a fixing hole; 11. a bearing; 12. a cooling jacket; 13. a liquid injection hole; 14. mounting holes; 15. a cooling tank; 16. a conduit; 17. a temperature display screen; 18. a liquid adding hole; 19. a liquid feeding pipe; 20. a vent hole; 21. a dust-proof block; 22. a threaded hole; 23. connecting holes; 24. and (5) fixing the column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, 2, 3 and 4, a squirrel cage motor stator structure convenient for cooling comprises a casing 1, a fixing ring 2 is fixedly installed on the outer circular wall surface of the casing 1, an end cover 3 is arranged on one side of the casing 1, a through hole is formed in one side of the end cover 3, the interior of the casing 1 is arranged on a stator 4, a rotor 5 is sleeved inside the stator 4, an anti-creeping assembly is arranged inside the stator 4 and used for preventing leakage, the anti-creeping assembly comprises a plurality of wire slots 6, the plurality of wire slots 6 are all arranged on the inner circular wall surface of the stator 4, an insulating layer is installed on the inner wall surface of the wire slots 6, a protective ring 7 is movably sleeved on the inner circular wall surface of the stator 4, a plurality of fixing blocks 8 are fixedly installed on the outer wall surface of the protective ring 7, clamping grooves are formed in the top surfaces of the fixing blocks 8, insulating paper is installed inside the clamping grooves, the positions of the fixing blocks 8 correspond to the positions of the wire slots 6, and the anti-creeping assembly is arranged, when a worker supplies power to a motor, a coil inside a wire slot 6 is electrified to generate a magnetic field, the rotor 5 is driven to rotate through the magnetic field, after the coil is electrified, insulating paint on the surface of the coil can be separated from the insulating paint on the surface of the coil to cause leakage, the performance of the motor is affected, the transmission of the leakage of the coil is avoided through an insulating layer inside the wire slot 6 and insulating paper inside a clamping groove, meanwhile, in the running process of the motor, the coil can rub against the wire slot 6 to cause the separation of the insulating paint on the surface of the coil, the coil is limited through a fixing block 8 to avoid the transmission of the leakage between the coil and a stator 4 iron core, the performance of the motor is improved, a fixing plate 9 is fixedly installed on the inner circle wall surface of a casing 1, a fixing hole 10 is formed in one side of the fixing plate 9, a bearing 11 is fixedly installed on the inner circle wall surface of the fixing hole 10, a rotating shaft of the rotor 5 is sleeved inside the inner ring of the bearing 11, and the bearing 11 is arranged, when the rotor 5 rotates, the friction force between the rotating shaft of the rotor 5 and the fixing hole 10 can be reduced through the bearing 11, and the service life of the rotor 5 is prolonged.

Referring to fig. 1, 3 and 4, a cooling mechanism is arranged on the outer circumferential wall of the stator 4 and used for cooling the stator 4, the cooling mechanism includes a cooling jacket 12, the cooling jacket 12 is arranged on the outer circumferential wall of the stator 4, two liquid injection holes 13 are formed on the outer circumferential wall of the cooling jacket 12, two mounting holes 14 are formed on the outer circumferential wall of the casing 1, the mounting holes 14 correspond to the liquid injection holes 13, a cooling box 15 is fixedly mounted on the outer circumferential wall of the casing 1, two guide pipes 16 are fixedly mounted on the bottom surface of the cooling box 15, the guide pipes 16 extend into the liquid injection holes 13 through the mounting holes 14, by arranging the cooling box 15, micro water pumps are mounted inside the guide pipes 16, the cooling liquid inside the cooling box 15 is input into the cooling jacket 12 through the guide pipes 16 to cool the stator 4, the cooling liquid circulates and flows inside the cooling jacket 12 through the two micro water pumps, and cooling efficiency is improved, cooling body still includes temperature display screen 17, temperature display screen 17 fixed mounting is in one side of cooler bin 15, temperature display screen 17's monitoring end sets up the inside at cooler bin 15, liquid feeding hole 18 has been seted up to the top surface of cooler bin 15, interior round wall fixed mounting in liquid feeding hole 18 has liquid feeding pipe 19, through setting up temperature display screen 17, the temperature of coolant liquid can be known to staff's accessible temperature display screen 17, when cooling temperature was too high, accessible liquid feeding pipe 19 adds the coolant liquid, avoid the coolant liquid to evaporate, can't cool off stator 4, and the practicability is improved.

Referring to fig. 1 and 2, a plurality of vent holes 20 are formed in one side of a housing 1, a dust-proof block 21 is fixedly installed inside the vent holes 20, two threaded holes 22 are formed in one side of a fixing ring 2, through the arrangement of the vent holes 20, external air flows enter the housing 1 through the vent holes 20, heat is dissipated from a shaft body of a rotor 5, through the arrangement of the dust-proof block 21, dust is prevented from entering the inside of a bearing 11, the service life of a motor is shortened, two connecting holes 23 are formed in one side of an end cover 3, the positions of the connecting holes 23 correspond to the positions of the threaded holes 22, fixing posts 24 are sleeved inside the connecting holes 23, the fixing posts 24 penetrate through the connecting holes 23 and extend to the inner circular wall surface of the threaded holes 22 in a threaded manner, through the arrangement of the fixing posts 24, when a worker needs to maintain the motor, the end cover 3 is separated from one side of the fixing ring 2 by rotating the fixing posts 24, the maintenance of the interior of the machine shell 1 is convenient for workers.

The working principle is as follows: referring to fig. 1, 2, 3 and 4, when the motor is used, by arranging the anti-creeping assembly, when a worker supplies power to the motor, the coil inside the wire slot 6 is electrified to generate a magnetic field, the rotor 5 is driven to rotate by the magnetic field, after the coil is electrified, the insulating paint on the surface of the coil can be separated from the insulating paint to generate a leak, the performance of the motor is influenced, the coil is prevented from being leaked and transferred by an insulating layer inside the wire slot 6 and insulating paper inside a clamping slot, meanwhile, in the running process of the motor, the coil can be separated from the insulating paint on the surface of the coil due to friction with the wire slot 6, the coil is limited by the fixing block 8 to prevent the coil from being rubbed with the iron core of the stator 4, the leak transfer between the coil and the iron core of the stator 4 is caused, the performance of the motor is improved, by arranging the cooling mechanism, when the motor runs, the current generates heat in the coil installed inside the stator 4, not handling the heat can lead to the inside high temperature of motor, leads to the coil resistivity to rise sharply, causes the too much consumption of electric energy, cools down stator 4 through cooling body, avoids the consumption of surplus electric energy.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A squirrel cage motor stator structure convenient to cool, characterized by comprising: the device comprises a shell (1), wherein a fixing ring (2) is fixedly mounted on the outer circle wall surface of the shell (1), an end cover (3) is arranged on one side of the shell (1), and a through hole is formed in one side of the end cover (3); the stator (4) is arranged inside the shell (1), and a rotor (5) is sleeved inside the stator (4); anticreep subassembly sets up the inside of stator (4) for prevent the leak, anticreep subassembly includes a plurality of wire casing (6), a plurality of wire casing (6) are all seted up the interior round wall of stator (4), the insulating layer is installed to the inner wall of wire casing (6), the interior round wall movable sleeve of stator (4) is equipped with guard ring (7), the outer wall fixed mounting of guard ring (7) has a plurality of fixed block (8), the draw-in groove is seted up to the top surface of fixed block (8), and draw-in groove internally mounted has insulating paper, the position of fixed block (8) with the position of wire casing (6) is corresponding.

2. The squirrel cage motor stator structure facilitating cooling as claimed in claim 1, wherein: the utility model discloses a motor rotor, including casing (1), fixed plate (9) have been installed to the interior circle wall fixed mounting of casing (1), fixed orifices (10) have been seted up to one side of fixed plate (9), the interior circle wall fixed mounting of fixed orifices (10) has bearing (11), the inside cover of inner ring of bearing (11) is equipped with the axis of rotation of rotor (5).

3. The squirrel cage motor stator structure facilitating cooling as claimed in claim 1, wherein: and the outer circle wall surface of the stator (4) is provided with a cooling mechanism for cooling the stator (4).

4. The squirrel cage motor stator structure facilitating cooling as claimed in claim 3, wherein: the cooling mechanism includes: the cooling jacket (12) is arranged on the outer circumferential wall surface of the stator (4), and two liquid injection holes (13) are formed in the outer circumferential wall surface of the cooling jacket (12); the two mounting holes (14) are formed in the outer circle wall surface of the machine shell (1), and the positions of the mounting holes (14) correspond to the positions of the liquid injection holes (13);

cooling box (15), cooling box (15) set up the excircle wall surface of casing (1), the bottom surface fixed mounting of cooling box (15) has two pipes (16), pipe (16) pass mounting hole (14) extend to annotate the inside of liquid hole (13).

5. The squirrel cage motor stator structure facilitating cooling as claimed in claim 4, wherein: the cooling mechanism further includes:

the temperature display screen (17), the temperature display screen (17) is fixedly installed on one side of the cooling box (15), and the monitoring end of the temperature display screen (17) is arranged in the cooling box (15);

the liquid adding device comprises a liquid adding hole (18), wherein the liquid adding hole (18) is formed in the top surface of the cooling box (15), and a liquid adding pipe (19) is fixedly installed on the inner circle wall surface of the liquid adding hole (18).

6. The squirrel cage motor stator structure facilitating cooling as claimed in claim 1, wherein: a plurality of ventilation holes (20) are formed in one side of the machine shell (1), and dust-proof blocks (21) are fixedly mounted inside the ventilation holes (20).

7. The squirrel cage motor stator structure facilitating cooling as claimed in claim 1, wherein: two threaded holes (22) are formed in one side of the fixing ring (2), two connecting holes (23) are formed in one side of the end cover (3), the positions of the connecting holes (23) correspond to the positions of the threaded holes (22), a fixing column (24) is sleeved inside the connecting holes (23), and the fixing column (24) penetrates through the inner circular wall face of the connecting holes (23) and extends to the threaded holes (22) in a threaded mode.