CN209805556U

CN209805556U - three-phase permanent magnet synchronous variable frequency motor

Info

Publication number: CN209805556U
Application number: CN201921115469.4U
Authority: CN
Inventors: 孙平飞; 毛卫锋
Original assignee: SHANGHAI HAIGUANG MOTOR CO Ltd
Current assignee: SHANGHAI HAIGUANG MOTOR CO Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2019-12-17
Anticipated expiration: 2029-07-17

Abstract

the utility model discloses a synchronous inverter motor of three-phase permanent magnetism, including front end housing, frame, rear end cap and supporting seat, the supporting seat is all installed to the both sides of frame bottom, the outside of frame evenly is fixed with the fixed plate, and the both sides of fixed plate all install the inserted block, one side of frame is fixed with the front end housing, the opposite side of frame is fixed with the rear end cap, and inside one side of rear end housing and front end housing evenly installs the slot of mutually supporting with the inserted block. The utility model discloses an install metal shield cover and EMI sticky tape and make this motor can shield the electromagnetic wave that the motor produced, the EMI sticky tape adopts high-quality pressure sensitive adhesive, and viscidity is good, and adhesive force is strong, has good shielding effect, can avoid the electromagnetic wave external radiation that the motor produced through the metal shield cover, and electromagnetic interference (EMI) can be eliminated in EMI sticky tape and the metal shield cover mutually supporting, keeps apart the electromagnetic wave to the harm of human body and the interference of electromagnetic wave to other systems.

Description

Three-phase permanent magnet synchronous variable frequency motor

Technical Field

The utility model relates to the technical field of electric machines, specifically be a synchronous inverter motor of three-phase permanent magnetism.

Background

The use of three-phase permanent magnet synchronous variable frequency motor is comparatively extensive, and its simple structure, small, inertia are little, the cost is low, the maintenance is easy, durable, has multiple good characteristic, but current three-phase permanent magnet synchronous variable frequency motor has many problems or defects:

(1) The traditional three-phase permanent magnet synchronous variable frequency motor is inconvenient to maintain, namely the motor is inconvenient to disassemble, and the motor cannot be disassembled after the motor is damaged, so that the interior of the motor is overhauled, and the service life of the motor is limited;

(2) the traditional three-phase permanent magnet synchronous variable frequency motor can not shield the electromagnetic waves generated by the motor, and the electromagnetic waves can influence other systems and are not beneficial to the matching use of the motor and other systems because the motor can generate the electromagnetic waves in the using process;

traditional three-phase permanent magnet synchronous variable frequency motor can not fully dispel the heat, and the motor circular telegram back, wherein the electric energy part turns into mechanical energy, and partial electric energy then turns into heat energy, and this part heat is piled up in the inside of motor, causes the motor to damage easily.

Disclosure of Invention

An object of the utility model is to provide a synchronous inverter motor of three-phase permanent magnetism to solve the inconvenience that proposes in the above-mentioned background art maintain, can not shield and can not fully radiating problem to the electromagnetic wave that the motor produced.

in order to achieve the above object, the utility model provides a following technical scheme: a three-phase permanent magnet synchronous variable frequency motor comprises a front end cover, a base, a rear end cover and a supporting seat, wherein the supporting seat is installed on two sides of the base bottom, a fixing plate is uniformly fixed on the outer side of the base, inserting blocks are installed on two sides of the fixing plate, the front end cover is fixed on one side of the base, the rear end cover is fixed on the other side of the base, inserting grooves matched with the inserting blocks are uniformly installed on one sides of the inner portions of the rear end cover and the front end cover, a fixing frame is fixed on the inner portion of the rear end cover, a cooling water pipe is arranged inside the fixing frame, a water inlet connector is installed at the top end of the rear end cover, a water outlet connector is installed at the bottom end of the rear end cover, a motor shaft is fixed at the middle position of the inner portion of the base, a metal shielding cover is fixed on one side of the motor shaft, an, the motor comprises a motor shaft, and is characterized in that a rotor core is fixed on the outer side of the motor shaft, a stator core is fixed on the outer side of the rotor core, and three-phase windings are uniformly arranged on the inner side of the stator core.

Preferably, the front end cover and the rear end cover are both formed with the base to be disassembled and installed, the slot and the insert block are formed into a clamping structure, the diameter of the insert block is smaller than that of the slot, and the insert block and the slot are fixedly connected through a fixing bolt.

Preferably, the outside of rotor core evenly is fixed with the permanent magnet S utmost point and the permanent magnet N utmost point, and the permanent magnet S utmost point and the permanent magnet N utmost point all are "arc" type structure, stator core' S inboard evenly is provided with the lug, and the three-phase winding passes through the viscose layer winding with the lug and is connected.

Preferably, the one end of rear end cap evenly is provided with the fin, condenser tube's top is provided with the inlet tube, and the inlet tube is linked together with water supply connector, and condenser tube's bottom is provided with the outlet pipe, and the outlet pipe is linked together with water supply connector.

Preferably, the bottom of supporting seat all is provided with the antiskid circle, and the supporting seat sets up about the central line symmetry of frame.

Preferably, a through groove is formed in the metal shielding cover, and the diameter of the through groove is larger than that of the motor shaft.

compared with the prior art, the beneficial effects of the utility model are that: the three-phase permanent magnet synchronous variable frequency motor is reasonable in structure and has the following advantages:

(1) the motor is convenient to maintain by installing the slot, the insert block, the front end cover and the rear end cover, the insert block can be drawn out from the slot by unscrewing the fixing bolt between the slot and the insert block, so that the front end cover, the rear end cover and the base are separated, the motor is convenient to disassemble, and then the interior of the motor is maintained;

(2) The electromagnetic wave generated by the motor can be shielded by the motor through the installation of the metal shielding cover and the EMI adhesive tape, the EMI adhesive tape adopts high-quality pressure-sensitive adhesive, has good viscosity, strong adhesive force and good shielding effect, the electromagnetic wave generated by the motor can be prevented from radiating outwards through the metal shielding cover, and the EMI adhesive tape and the metal shielding cover are matched with each other to eliminate electromagnetic interference (EMI) and isolate the harm of the electromagnetic wave to a human body and the interference of the electromagnetic wave to other systems;

(3) Make this motor can fully dispel the heat through installing radiator fan and condenser tube, through letting in the coolant liquid in to condenser tube, can absorb the inside heat of motor, radiator fan work can drive the inside air current of motor and flow simultaneously, and forced air cooling and water-cooling combine together to make the radiating effect better.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is a schematic side view of the cross-sectional structure of the present invention;

fig. 3 is a schematic side view of a cross-sectional structure of a stator core according to the present invention;

Fig. 4 is a schematic view of the side view structure of the fixing frame of the present invention.

in the figure: 1. a motor shaft; 2. a front end cover; 3. an EMI tape; 4. a rotor core; 5. a fixing plate; 6. a stator core; 7. a machine base; 8. a three-phase winding; 9. a water inlet joint; 10. a rear end cap; 11. a fixed mount; 12. a heat radiation fan; 13. a water outlet joint; 14. a slot; 15. a supporting seat; 16. inserting a block; 17. a metal shield case; 18. and cooling the water pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a three-phase permanent magnet synchronous variable frequency motor comprises a front end cover 2, a base 7, a rear end cover 10 and supporting seats 15, wherein the supporting seats 15 are respectively installed on two sides of the bottom end of the base 7, anti-skidding rings are respectively arranged at the bottom ends of the supporting seats 15, the supporting seats 15 are symmetrically arranged relative to the central line of the base 7, the anti-skidding rings enable the friction force between the supporting seats 15 and a contact surface to be increased, the motor is conveniently and stably placed on the contact surface, and the stability of the motor is enabled to be better;

The outer side of the base 7 is uniformly fixed with a fixing plate 5, the two sides of the fixing plate 5 are respectively provided with an inserting block 16, one side of the base 7 is fixed with a front end cover 2, the other side of the base 7 is fixed with a rear end cover 10, the inner sides of the rear end cover 10 and the front end cover 2 are respectively and uniformly provided with an inserting groove 14 matched with the inserting block 16, the front end cover 2 and the rear end cover 10 and the base 7 form a dismounting and mounting structure, the inserting groove 14 and the inserting block 16 form a clamping structure, the diameter of the inserting block 16 is smaller than that of the inserting groove 14, the inserting block 16 and the inserting groove 14 are fixedly connected through a fixing bolt, the fixing bolt is unscrewed, the front end cover 2 and the rear end cover 10 can be dismounted from the two sides of the base;

A fixed frame 11 is fixed inside the rear end cover 10, a cooling water pipe 18 is arranged inside the fixed frame 11, a water inlet connector 9 is arranged at the top end of the rear end cover 10, a water outlet connector 13 is arranged at the bottom end of the rear end cover 10, cooling fins are uniformly arranged at one end of the rear end cover 10, a water inlet pipe is arranged at the top end of the cooling water pipe 18 and communicated with the water inlet connector 9, a water outlet pipe is arranged at the bottom end of the cooling water pipe 18 and communicated with the water outlet connector 13, the water inlet connector 9 and the water outlet connector 13 can be externally connected with water pipes, so that cooling liquid can be introduced into the cooling water pipe 18, and the;

A motor shaft 1 is fixed in the middle of the inside of the base 7, a metal shielding cover 17 is fixed on one side of the motor shaft 1, an EMI (electro-magnetic interference) adhesive tape 3 is uniformly arranged on the outer side of the metal shielding cover 17, a through groove is formed in the metal shielding cover 17, the diameter of the through groove is larger than that of the motor shaft 1, and the metal shielding cover 17 can penetrate through the motor shaft 1 through the through groove and is fixed on the motor shaft 1 to shield electromagnetic waves;

the opposite side of metal shield 17 is fixed with radiator fan 12, the outside of motor shaft 1 is fixed with rotor core 4, and rotor core 4 ' S the outside is fixed with stator core 6, rotor core 4 ' S the outside is evenly fixed with permanent magnet S utmost point and permanent magnet N utmost point, and permanent magnet S utmost point and permanent magnet N utmost point all are "arc" type structure, stator core 6 ' S inboard evenly is provided with the lug, three-phase winding 8 passes through the viscose layer winding with the lug and is connected, motor circular telegram back permanent magnet S utmost point and permanent magnet N utmost point mutually support and produce electromagnetic torque, be convenient for the motor to work, adopt "arc" type structure simultaneously, can increase with rotor core 4 ' S area of contact, with rotor core 4 zonulae occludens, avoid taking place to drop, stator core 6 ' S inboard evenly is provided with three-phase winding 8.

The working principle is as follows: when the three-phase motor is used, the external power supply is connected, after the three-phase winding 8 is connected to the three-phase alternating current power supply, three-phase symmetrical current flows through the three-phase symmetrical current, an armature rotating magnetic field is generated, the magnetic field rotates in an air gap space at a synchronous speed, the direction of the magnetic field is determined by the phase sequence of the current, according to the principle that like magnetic poles repel each other and opposite magnetic poles attract each other, when the S pole of the permanent magnet on the outer side of the rotor core 4 is aligned with the N pole of the armature rotating magnetic field or the N pole of the permanent magnet on the rotor core 4 is aligned with the S pole of the armature rotating magnetic field, the magnetic pole on the outer side of the rotor core 4 is attracted by the armature rotating magnetic field to generate electromagnetic attraction, further electromagnetic torque is generated, the rotor core 4 is dragged to rotate along with the rotating magnetic field, therefore, the rotating speed and the direction of the, when the motor damages the back, only need unscrew fixing bolt, take the inserted block 16 out from slot 14 and can realize dismantling the motor to maintain motor inside, EMI sticky tape 3 and metallic shield cover 17 mutually support and both can shield external electromagnetic wave's interference, can avoid the inside electromagnetic wave radiation of motor to the outside again, and radiator fan 12 and condenser tube 18 mutually support and can fully dispel the heat to this motor.

it is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. the utility model provides a synchronous inverter motor of three-phase permanent magnetism, includes front end housing (2), frame (7), rear end cap (10) and supporting seat (15), its characterized in that: the support seat (15) is installed on two sides of the bottom end of the machine base (7), a fixing plate (5) is uniformly fixed on the outer side of the machine base (7), an insert block (16) is installed on two sides of the fixing plate (5), a front end cover (2) is fixed on one side of the machine base (7), a rear end cover (10) is fixed on the other side of the machine base (7), a slot (14) matched with the insert block (16) is uniformly installed on one side of the inner portion of the rear end cover (10) and the front end cover (2), a fixing frame (11) is fixed on the inner portion of the rear end cover (10), a cooling water pipe (18) is arranged on the inner portion of the fixing frame (11), a water inlet connector (9) is installed on the top end of the rear end cover (10), a water outlet connector (13) is installed on the bottom end of the rear end cover (10), and a motor, and one side of motor shaft (1) is fixed with metal shielding cover (17), the outside of metal shielding cover (17) evenly is provided with EMI sticky tape (3), the opposite side of metal shielding cover (17) is fixed with radiator fan (12), the outside of motor shaft (1) is fixed with rotor core (4), and the outside of rotor core (4) is fixed with stator core (6), the inboard of stator core (6) evenly is provided with three-phase winding (8).

2. The three-phase permanent magnet synchronous variable frequency motor according to claim 1, characterized in that: front end housing (2) and rear end housing (10) all constitute with frame (7) and dismantle mounting structure, slot (14) and inserted block (16) constitute the block structure, and the diameter of inserted block (16) is less than the diameter of slot (14), and inserted block (16) and slot (14) pass through fixing bolt fixed connection.

3. the three-phase permanent magnet synchronous variable frequency motor according to claim 1, characterized in that: the outside of rotor core (4) is evenly fixed with the permanent magnet S utmost point and the permanent magnet N utmost point, and the permanent magnet S utmost point and the permanent magnet N utmost point all are "arc" type structure, the inboard of stator core (6) evenly is provided with the lug, and three-phase winding (8) pass through the viscose layer winding with the lug and are connected.

4. The three-phase permanent magnet synchronous variable frequency motor according to claim 1, characterized in that: the cooling water pipe is characterized in that cooling fins are evenly arranged at one end of the rear end cover (10), a water inlet pipe is arranged at the top end of the cooling water pipe (18), the water inlet pipe is communicated with the water inlet connector (9), a water outlet pipe is arranged at the bottom end of the cooling water pipe (18), and the water outlet pipe is communicated with the water outlet connector (13).

5. The three-phase permanent magnet synchronous variable frequency motor according to claim 1, characterized in that: the bottom of supporting seat (15) all is provided with anti-skidding circle, and supporting seat (15) set up about the central line symmetry of frame (7).

6. The three-phase permanent magnet synchronous variable frequency motor according to claim 1, characterized in that: a through groove is formed in the metal shielding cover (17), and the diameter of the through groove is larger than that of the motor shaft (1).