CN212572303U

CN212572303U - Permanent magnet three-phase motor

Info

Publication number: CN212572303U
Application number: CN202021675035.2U
Authority: CN
Inventors: 邢冬梅
Original assignee: Jinda Motor Co ltd Wendeng Cit
Current assignee: Jinda Motor Co ltd Wendeng Cit
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-02-19
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses a permanent magnet three-phase motor, which belongs to the technical field of motors, and the technical proposal is characterized in that the permanent magnet three-phase motor comprises a casing, wherein a supporting seat is fixedly connected with the lower end surface of the casing, a left end cover is detachably connected with the left end of the casing, a plurality of heat dissipation holes are arranged inside the left end cover, a motor shaft is arranged in the middle of the casing in a penetrating way, a rotor iron core is fixedly connected with the outer side wall of the motor shaft, the rotor iron core is positioned inside the casing, a stator iron core is fixedly arranged on the inner side wall of the casing, a stator winding is fixedly arranged on one side of the stator iron core far away from the casing, an air gap is formed between the stator winding and the rotor iron core, and shielding covers are fixedly connected with the inner side walls at the left end and the right end of the casing, thereby shielding electromagnetic, the motor is cooled, and heat generated by the motor is prevented from being accumulated to damage the motor.

Description

Permanent magnet three-phase motor

Technical Field

The utility model relates to the technical field of electric machines, in particular to permanent magnet three-phase motor.

Background

The three-phase motor is characterized in that when three-phase stator windings (with an electrical angle difference of 120 degrees) of the motor are electrified, a rotating magnetic field is generated, the rotating magnetic field cuts a rotor winding, so that induced current is generated in the rotor winding (the rotor winding is a closed passage), a current-carrying rotor conductor generates electromagnetic force under the action of the stator rotating magnetic field, so that electromagnetic torque is formed on a rotating shaft of the motor, the motor is driven to rotate, and the rotating direction of the motor is the same as the rotating direction of the rotating magnetic field.

Traditional permanent magnetism three-phase motor because the motor can produce the electromagnetic wave in the use, these electromagnetic waves can lead to the fact the influence to other systems, and the motor can not shield the electromagnetic wave that the motor produced, is unfavorable for motor and other system cooperations to use, and the motor can not fully dispel the heat when using in addition, and the heat of production is piled up in the inside of motor, causes the motor to damage easily.

Disclosure of Invention

The utility model provides a not enough to prior art, the utility model provides a permanent magnetism three-phase motor aims at solving the electromagnetic wave that the motor can not produce and shields, is unfavorable for the motor to use with other system cooperations and the motor can not fully dispel the heat when using, and the heat of production is piled up in the inside of motor, causes the problem of motor damage easily.

In order to achieve the above object, the utility model provides a following technical scheme: a permanent magnet three-phase motor comprises a casing, wherein a supporting seat is fixedly connected to the lower end face of the casing, a left end cover is detachably connected to the left end of the casing, a plurality of heat dissipation holes are formed in the left end cover, a motor shaft penetrates through the middle of the casing, a rotor core is fixedly connected to the outer side wall of the motor shaft and is located in the casing, a stator core is fixedly installed on the inner side wall of the casing, a stator winding is fixedly installed on one side, away from the casing, of the stator core, an air gap is formed between the stator winding and the rotor core, shielding covers are fixedly connected to the inner side walls of the left end and the right end of the casing, the rotor core, the stator core and the stator winding are located between the two shielding covers, a cooling water pipe is installed on the right side of the shielding cover on the right, two the lateral wall at the motor shaft is cup jointed in the equal activity of shield cover, left end lid and condenser tube, the fixed cover of right-hand member lateral wall of motor shaft has connect the fan, the fan is located the inside of casing, the right-hand member of casing can be dismantled and be connected with the right-hand member lid, the up end fixed mounting of casing has the refrigeration case.

In order to reduce the motor magnetic leakage, make the motor normally work, conduct the utility model relates to a permanent magnetism three-phase machine is preferred, two the inside and the centre of shield cover all are filled there are a plurality of even electromagnetic shielding material of distribution.

In order to make the water in the cooling water pipe carry out the cooling reflux, as the utility model relates to a permanent magnetism three-phase motor is preferred, cooling water pipe's upper end all communicates has inlet tube and outlet pipe, the inlet tube all run through the up end of casing with the outlet pipe and with the right side wall intercommunication of refrigeration case, the water pump is installed to the lateral wall of outlet pipe, the water pump is located the up end of casing.

In order to cool the water in the cooling water pipe, as the utility model relates to a permanent magnet three-phase motor is preferred, the inside of refrigeration case is equipped with the refrigerator, the top of refrigeration case is equipped with the water inlet.

Blow the air conditioning on the condenser tube for the fan and dispel the heat the cooling, conduct the utility model relates to a permanent magnetism three-phase motor is preferred, the fan is located condenser tube's right side.

In order to prevent that sand and dust from entering the motor, damage the motor, conduct the utility model relates to a permanent magnetism three-phase machine is preferred, the right-hand member lid is the magnetism dust screen.

The utility model has the advantages that:

1. this kind of permanent magnetism three-phase motor through setting up two shield covers, a plurality of electromagnetic shield material of the inside packing of two shield covers to shield the electromagnetic wave that the motor produced, prevent that the electromagnetic wave that the motor produced from disturbing the use of other systems.

2. This kind of permanent magnetism three-phase motor, pour into water from the water inlet, the refrigerator of refrigeration incasement cools off water, in the cooling water of refrigeration incasement flows into the cooling water pipe from the inlet tube, dispel the heat when the fan rotates, the water pump takes back the water in the cooling water pipe to the refrigeration case, the water that the water pump was taken back is cooled off to the refrigeration case to make the water in the cooling water pipe carry out cooling cycle, and then dispel the heat with the motor, prevent that the heat that the motor produced from piling up the damage motor.

3. This kind of permanent magnetism three-phase motor, magnetism dust screen prevent that the dust and sand in the air from getting into right-hand member lid along with the air current and getting into, prevent that the motor is damaged to the dust and sand.

Drawings

Fig. 1 is a structural diagram of a permanent magnet three-phase motor according to the present invention;

FIG. 2 is a partial right sectional view of the present invention;

fig. 3 is a schematic view of the shielding case of the present invention.

The labels in the figure are: 1. a housing; 101. a supporting seat; 2. a rotor core; 201. an air gap; 3. a motor shaft; 301. a fan; 4. a stator core; 401. a stator winding; 5. a left end cap; 501. heat dissipation holes; 6. a shield case; 601. an electromagnetic shielding material; 7. a right end cap; 8. a cooling water pipe; 801. a water inlet pipe; 802. a water outlet pipe; 9. a refrigeration case; 901. a water inlet; 902. and (4) a water pump.

Detailed Description

As shown in fig. 1-3, a permanent magnet three-phase motor includes a casing 1, a supporting seat 101 is fixedly connected to a lower end surface of the casing 1, a left end cover 5 is detachably connected to a left end of the casing 1, a plurality of heat dissipation holes 501 are formed in the left end cover 5, a motor shaft 3 is arranged in the middle of the inside of the casing 1, a rotor core 2 is fixedly connected to an outer side wall of the motor shaft 3, the rotor core 2 is located in the casing 1, a stator core 4 is fixedly installed on an inner side wall of the casing 1, a stator winding 401 is fixedly installed on a side of the stator core 4 away from the casing 1, an air gap 201 is formed between the stator winding 401 and the rotor core 2, shielding cases 6 are fixedly connected to inner side walls at left and right ends of the casing 1, the rotor core 2, the stator core 4 and the stator winding 401 are all located between, the outer wall of condenser tube 8 and the inside wall fixed connection of casing 1, two shield covers 6, left end lid 5 and the equal activity of condenser tube 8 cup joint the lateral wall at motor shaft 3, and the fixed cover of right-hand member lateral wall of motor shaft 3 has connect fan 301, and fan 301 is located the inside of casing 1, and the right-hand member of casing 1 can be dismantled and be connected with right-hand member lid 7, and the up end fixed mounting of casing 1 has refrigeration case 9.

In this embodiment: after the motor is powered on, the S pole of the permanent magnet and the N pole of the permanent magnet are matched with each other to generate electromagnetism, the magnetic pole at the outer side of the rotor core 2 is attracted by the armature rotating magnetic field to generate electromagnetic attraction force and further generate electromagnetic torque to drag the rotor core 2 to rotate along with the rotating magnetic field, in order to prevent magnetic flux short circuit and interference of an external magnetic field, two shielding cases 6 are arranged, a plurality of electromagnetic shielding materials 601 filled in the two shielding cases 6 shield the electromagnetism, water is filled from a water inlet 901, a refrigerator in a refrigeration box 9 cools water, the cooling water in the refrigeration box 9 enters from a water inlet pipe 801, the cooling water entering the water inlet pipe 801 further flows into a cooling water pipe 8, heat dissipation is carried out when a fan 301 rotates, the water in the cooling water pipe 8 is pumped by a water pump 902 to flow back to the refrigeration box 9, the water pumped back by the water pump 902 is cooled by the refrigeration box 9, and a magnetic dustproof net prevents sand and dust in the air from, the motor is damaged by the protection dust.

As a technical optimization scheme of the utility model, the inside and the centre of two shield cans 6 all are filled with a plurality of even electromagnetic shield material 601 that distribute.

In this embodiment: by providing the two shield cases 6, the electromagnetic waves generated by the motor are shielded by the plurality of electromagnetic shielding materials 601 filled inside and between the two shield cases 6, and the influence on other systems is prevented.

As the utility model discloses a technical optimization scheme, condenser tube 8's upper end all communicates has inlet tube 801 and outlet pipe 802, inlet tube 801 all run through casing 1's up end and communicate with the right side wall of refrigeration case 9 with outlet pipe 802, and water pump 902 is installed to the lateral wall of outlet pipe 802, and water pump 902 is located casing 1's up end.

In this embodiment: the cooling water in the refrigeration case 9 gets into from inlet tube 801, gets into in the cooling water of inlet tube 801 and then flows into condenser tube 8, when leading to full cooling water in condenser tube 8, water pump 902 draws the water reflux in the condenser tube 8 to refrigeration case 9, and refrigeration case 9 cools off the water that water pump 902 was drawn back.

As a technical optimization scheme of the utility model, the inside of refrigeration case 9 is equipped with the refrigerator, and the top of refrigeration case 9 is equipped with water inlet 901.

In this embodiment: water is poured into the water inlet 901, the water is cooled by the refrigerator in the refrigeration box 9 and then is introduced into the cooling water pipe 8, heat of the motor is dissipated, the water pump 902 pumps the water in the cooling water pipe 8 back into the refrigeration box 9, and the refrigerator in the refrigeration box 9 cools the water again, so that the water in the cooling water pipe 8 is cooled circularly.

As a technical optimization scheme of the present invention, the fan 301 is located on the right side of the cooling water pipe 8.

In this embodiment: after the cooling water is introduced into the cooling water pipe 8, the fan 301 blows out the cold air generated by the cooling water in the cooling water pipe 8 to dissipate the heat of the motor.

As a technical optimization scheme of the utility model, right-hand member lid 7 is the magnetism dust screen.

In this embodiment: when the fan 301 rotates, a part of air flow enters the motor from the right end cover 7 as a magnetic dustproof net, and when the weather condition is severe or the operation is severe, the magnetic dustproof net prevents sand and dust in the air from entering the motor from the right end cover 7 along with the air flow, so that the motor is protected from being damaged by the sand and dust.

The working principle is as follows: firstly, the motor is externally connected with a power supply, the S pole and the N pole of the permanent magnet are matched with each other to generate electromagnetism after the motor is electrified, the magnetic poles at the outer side of the rotor core 2 are attracted by the armature rotating magnetic field to generate electromagnetic attraction force and further generate electromagnetic torque to drag the rotor core 2 to rotate along with the rotating magnetic field, in order to prevent magnetic flux short circuit and interference of an external magnetic field, a plurality of electromagnetic shielding materials 601 filled in the two shielding cases 6 can play a role of reducing magnetic leakage, water is filled in from the water inlet 901, a refrigerator in the refrigeration box 9 cools the water, the cooling water in the refrigeration box 9 flows into the cooling water pipe 8 from the water inlet pipe 801, the fan 301 dissipates heat when rotating, the water in the cooling water pipe 8 is pumped back to the refrigeration box 9 by the water pump 902, the water pumped back by the refrigeration box 9 is cooled, and the magnetic dustproof net prevents sand dust in the air from entering the right end cover 7 along with the air flow, the motor is damaged by the protection dust.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

However, the above embodiments are only examples of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims.

Claims

1. A permanent magnet three-phase motor comprises a machine shell (1), and is characterized in that: the motor comprises a casing (1), a supporting seat (101) is fixedly connected to the lower end face of the casing (1), a left end cover (5) is detachably connected to the left end of the casing (1), a plurality of heat dissipation holes (501) are formed in the left end cover (5), a motor shaft (3) penetrates through the middle of the casing (1), a rotor core (2) is fixedly connected to the outer side wall of the motor shaft (3), the rotor core (2) is located in the casing (1), a stator core (4) is fixedly installed on the inner side wall of the casing (1), a stator winding (401) is fixedly installed on one side, away from the casing (1), of the stator core (4), an air gap (201) is formed between the stator winding (401) and the rotor core (2), shielding cases (6) are fixedly connected to the inner side walls at the left end and the right end of the casing (1), and the rotor core (2), the stator core (4) and the stator winding (, be located the right-hand cooling water pipe (8) of installing of shield cover (6) on right side, the outer wall of cooling water pipe (8) and the inside wall fixed connection of casing (1), two the equal activity of shield cover (6), left end lid (5) and cooling water pipe (8) cup joints the lateral wall in motor shaft (3), fan (301) have been cup jointed to the right-hand member lateral wall of motor shaft (3) fixed, fan (301) are located the inside of casing (1), the right-hand member of casing (1) can be dismantled and be connected with right-hand member end cover (7), the up end fixed mounting of casing (1) has refrigeration case (9).

2. A permanent magnet three phase machine according to claim 1, characterized in that: the interior and the middle of the two shielding cases (6) are filled with a plurality of uniformly distributed electromagnetic shielding materials (601).

3. A permanent magnet three phase machine according to claim 1, characterized in that: the upper end of condenser tube (8) all communicates inlet tube (801) and outlet pipe (802), inlet tube (801) all run through the up end of casing (1) with outlet pipe (802) and communicate with the right side wall of refrigeration case (9), water pump (902) are installed to the lateral wall of outlet pipe (802), water pump (902) are located the up end of casing (1).

4. A permanent magnet three phase machine according to claim 1, characterized in that: a refrigerator is arranged inside the refrigeration box (9), and a water inlet (901) is formed in the top end of the refrigeration box (9).

5. A permanent magnet three phase machine according to claim 1, characterized in that: the fan (301) is positioned on the right side of the cooling water pipe (8).

6. A permanent magnet three phase machine according to claim 1, characterized in that: the right end cover (7) is a magnetic dustproof net.