Search

CN-122026657-A - Energy-saving permanent magnet synchronous motor cooled by liquid

CN122026657ACN 122026657 ACN122026657 ACN 122026657ACN-122026657-A

Abstract

The invention discloses an energy-saving permanent magnet synchronous motor cooled by liquid, which relates to the field of permanent magnet synchronous motor application and comprises a machine base, wherein a first mounting groove and a second mounting groove are formed in the end part of the machine base, a cooling structure is mounted on the end part of the machine base, the cooling structure comprises two groups of cooling components, the cooling components comprise a torus, a wave-shaped cooling channel formed by connecting a through groove, a first notch groove and a second notch groove is formed in the end part of the torus in a penetrating way, a plurality of groups of plugging welding pieces are arranged at one end of the torus, provided with a plurality of groups of first notch grooves, and a plugging ring is movably mounted at the other end of the torus. The invention is provided with the assembled cooling structure to replace the traditional integrated cooling channel, the cooling structure can be disassembled and fully washed, the later maintenance of the cooling structure is more convenient, the axial distance of the cooling channel is short, the end face is detachable, and the whole cooling channel is changed into a plurality of groups of open cooling channels, so that high-pressure water flow can be washed at fixed points, and the cleaning effect is improved.

Inventors

  • LU WENCAI
  • LI YU
  • LIN LIANGLIANG
  • MA LEI

Assignees

  • 杭州奥正智能有限公司

Dates

Publication Date
20260512
Application Date
20260204

Claims (8)

  1. 1. The energy-saving permanent magnet synchronous motor cooled by liquid comprises a machine base (1), wherein a stator assembly and a rotor assembly are arranged in the machine base (1), and the energy-saving permanent magnet synchronous motor is characterized in that the end part of the machine base (1) is divided into an inner shell (103) and an outer shell (104) by arranging a first mounting groove (101) and a second mounting groove (102), the side surface of the machine base (1) is provided with a mounting box (105), cooling structures are movably arranged in the first mounting groove (101) and the second mounting groove (102), and the cooling structures are connected with a cooling liquid circulation system; The cooling structure comprises two groups of cooling assemblies (5), each cooling assembly (5) comprises a torus (501), a plurality of groups of through grooves (503) are formed in a penetrating mode at the end portion of the torus (501), a plurality of groups of first notch grooves (504) are formed in one end of the torus (501), a plurality of groups of second notch grooves (505) are formed in the other end of the torus (501), the through grooves (503), the first notch grooves (504) and the second notch grooves (505) are communicated to form a waveform cooling channel, a water inlet pipe (506) and a water outlet pipe (507) are arranged on the side face of the torus (501), the water inlet pipe (506) is a square head, the water outlet pipe (507) is a round head, a plurality of groups of plugging welding pieces (508) are arranged at one end of the torus (501) where a plurality of groups of first notch grooves (504) are formed, plugging rings (509) are movably mounted at the other end of the torus (501), and the waveform cooling channels of the two groups of cooling assemblies (5) of the cooling structure are embedded and distributed in a reverse direction.
  2. 2. The energy-saving permanent magnet synchronous motor cooled by liquid according to claim 1, wherein limiting blocks (502) are arranged on the inner side and the outer side of the annular body (501), and a plurality of groups of embedded grooves (2) matched with the limiting blocks (502) are formed in the inner sides of the first mounting groove (101) and the second mounting groove (102) of the base (1).
  3. 3. The energy-saving permanent magnet synchronous motor cooled by liquid according to claim 1, wherein one end of the base (1) is provided with a front end cover (3), the other end of the base (1) is provided with a rear end cover (4), and the front end cover (3) and the rear end cover (4) are used for limiting and installing a stator assembly and a rotor assembly.
  4. 4. The energy-saving permanent magnet synchronous motor cooled by liquid according to claim 1, wherein one end of the base (1) is provided with a front fixing ring (6) for blocking the first mounting groove (101), and the other end of the base (1) is provided with a rear fixing ring (7) for blocking the second mounting groove (102).
  5. 5. The energy-saving permanent magnet synchronous motor cooled by liquid according to claim 1, wherein a plurality of groups of the plugging welding pieces (508) and the torus (501) are fixedly connected by adopting a welding and polishing process.
  6. 6. The energy-saving permanent magnet synchronous motor cooled by liquid according to claim 1, wherein a plurality of groups of screws are arranged between the sealing ring (509) and the ring body (501), and an annular sealing gasket is arranged between the sealing ring (509) and the ring body (501).
  7. 7. The energy-saving permanent magnet synchronous motor cooled by liquid according to claim 1, wherein the cooling structure in the first mounting groove (101) is annular, and the cooling structure in the second mounting groove (102) is C-shaped.
  8. 8. The energy-saving permanent magnet synchronous motor cooled by liquid according to claim 1, wherein the cooling liquid circulation system comprises a cooling liquid conveying pipeline, a radiator, a liquid storage pipe, a circulating pump and a thermostat.

Description

Energy-saving permanent magnet synchronous motor cooled by liquid Technical Field The invention relates to the field of permanent magnet synchronous motor application, in particular to an energy-saving permanent magnet synchronous motor cooled by liquid. Background The liquid cooling permanent magnet synchronous motor is high-efficiency power equipment combining the permanent magnet synchronous motor and a liquid cooling system, and is characterized in that cooling liquid circularly flows to replace or assist traditional air cooling, so that high-efficiency heat dissipation of the motor is realized, the power density bottleneck of the common permanent magnet synchronous motor is broken through, energy conservation and emission reduction are realized, and the liquid cooling permanent magnet synchronous motor is suitable for high-load and high-power application scenes. The permanent magnet synchronous motor mainly comprises a machine base shell, a stator and a rotor assembly are arranged in the machine base shell, then two ends of the machine base shell are subjected to limit installation through end covers, an installation box is reserved on the side face of the machine base shell generally and used for installing an encoder, a sensor, a transformer and the like of the motor, a cooling system of the liquid cooling permanent magnet synchronous motor is a set of closed circulation temperature control system, core logic is directional flow of cooling liquid, heat of a heat source of the motor is accurately taken away, circulation modes are intelligently switched according to working conditions of the motor, cold starting warm-up and high-temperature heat dissipation requirements are considered, the whole cooling system is a closed loop, cooling liquid (water-glycol mixed liquid, cooling oil and the like) circulates in the loop and cannot be in direct contact with external air (pollution and evaporation loss are avoided), and a power source of the system is a cooling liquid circulation pump, and heat is finally dissipated into the environment through a radiator/heat exchanger. The cooling efficiency of the liquid cooling system is related to the cooling liquid circulation rate and the distribution of the cooling channels, the main flow distribution form of the cooling channels is provided with an axial foldback type cooling liquid inlet and a spiral cooling liquid outlet, but the cooling channels in the distribution form are usually provided with only one group of cooling liquid inlet and one group of cooling liquid outlet, so that when the cooling liquid circulates in the housing, the temperature of the cooling liquid just entering is low, and the temperature of the cooling liquid after being discharged is high, therefore, no matter what type of cooling channel is arranged in the housing, the cooling liquid can take away part of heat, but the cooling liquid can generate the condition of uneven axial or radial temperature distribution, the motor working under the condition of uneven temperature distribution for a long time not only has influence on the internal structure of the motor, but also can accelerate the blocking of the cooling liquid, the stable operation temperature of the motor can reach 90-150 ℃, the cooling liquid can be maintained at 60-120 ℃, the boiling point of common water glycol is about 108 ℃, especially when the cooling liquid is overloaded for a short time, the cooling liquid is in the circulation process generates local high temperature, the cooling liquid is boiled to generate a large quantity, the cooling liquid can block the flow channel, the heat exchange efficiency is reduced, the cooling liquid is easy to cause the local overheating of the motor, the magnesium liquid can take away part of heat, the cooling liquid can cause the problem of the magnesium ion to cause the problem of the thermal scale corrosion, and the scale corrosion and the corrosion of the flow channel is caused by the temperature difference. Disclosure of Invention Based on this, it is an object of the present invention to provide an energy-efficient permanent magnet synchronous motor cooled by a liquid, which solves the technical problems mentioned in the background above. The invention provides a technical scheme that the energy-saving permanent magnet synchronous motor cooled by liquid comprises a machine base, wherein a stator assembly and a rotor assembly are arranged in the machine base, the end part of the machine base divides the machine base into an inner shell and an outer shell by arranging a first mounting groove and a second mounting groove, mounting boxes are arranged on the side surface of the machine base, cooling structures are movably arranged in the first mounting groove and the second mounting groove, and the cooling structures are connected with a cooling liquid circulation system; The cooling structure comprises two groups of cooling components, the cooling components comprise a torus, a plurali