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CN-122026652-A - Energy-saving motor structure

CN122026652ACN 122026652 ACN122026652 ACN 122026652ACN-122026652-A

Abstract

The invention relates to the technical field of motors, in particular to an energy-saving motor structure, which comprises a machine base, a central shaft, a rotor and a stator, wherein the central shaft, the rotor and the stator are arranged in the machine base, the two ends of the machine base are respectively and detachably connected with a front end cover and a rear end cover, bearings are respectively arranged in the middle parts of the front end cover and the rear end cover, a fan housing is detachably arranged at one end of the machine base, which is close to the rear end cover, the central shaft is provided with a hollow inner cavity, an axial heat dissipation outlet is formed at one end, which is close to the rear end cover, of the central shaft, a gap is reserved between the inner ring of the rotor and the outer peripheral surface of the central shaft, radial heat dissipation holes are uniformly distributed at the positions, corresponding to the gaps, of the middle section of the central shaft, and the radial heat dissipation holes are communicated with the hollow inner cavity and the gaps of the central shaft.

Inventors

  • FENG SUHONG
  • HE ZONGYAO
  • CHEN FEIHONG

Assignees

  • 江门市江晟电机厂有限公司

Dates

Publication Date
20260512
Application Date
20260211

Claims (10)

  1. 1. The utility model provides an energy-saving motor structure, includes frame (1) and installs center pin (2), rotor (3) and stator (4) in frame (1), rotor (3) are located on center pin (2), stator (4) cover is located rotor (3) outside, the both ends of frame (1) are dismantled respectively and are connected with front end cover (5) and rear end cover (6), bearing (7) are all installed at the middle part of front end cover (5) and rear end cover (6), the both ends of center pin (2) are rotated with bearing (7) of corresponding side respectively and are connected, the one end that frame (1) is close to rear end cover (6) can be dismantled and be provided with fan housing (8), characterized in that, center pin (2) are equipped with cavity inner chamber (21), the one end that center pin (2) is close to front end cover (5) is closed form, the one end that center pin (2) is close to rear end cover (6) is formed with axial heat dissipation export (22), leave space (31) between the outer peripheral face of inner circle and center pin (2) of rotor (3), center pin (2) are corresponding radial position (31) evenly distributed has radial hole (23), the radial radiating holes (23) are communicated with the hollow inner cavity (21) of the central shaft (2) and the gap (31).
  2. 2. An energy-saving motor structure according to claim 1, characterized in that the central shaft (2) is formed by coaxially splicing a front section (24) and a rear section (25), the front section (24) and the rear section (25) are detachably connected through a key connection structure, a first exhaust passage (211) is arranged in the front section (24), a second exhaust passage (212) is arranged in the rear section (25), and the first exhaust passage (211) and the second exhaust passage (212) are communicated and jointly form a hollow inner cavity (21) of the central shaft (2).
  3. 3. The energy-saving motor structure according to claim 2, wherein the key connection structure comprises a first external spline (241) arranged on an end face of the rear section (25) close to the front section (24), and a first internal spline groove (251) arranged on an inner wall of the front section (24) close to the rear section (25) and matched with the first external spline groove (241), wherein the first external spline (241) is in jogged fit with the first internal spline groove (251).
  4. 4. An energy-saving motor structure according to claim 2, wherein a plurality of reinforcing plates (242) are arranged in the first exhaust passage (211) of the front section (24) at intervals along the axial direction thereof, each reinforcing plate (242) partitions the first exhaust passage (211) to form a plurality of independent exhaust passages (243), and each independent exhaust passage (243) is respectively communicated with a corresponding radial heat dissipation hole (23) one by one.
  5. 5. An energy efficient motor structure according to claim 2, characterized in that the end of the rear section (25) remote from the front section (24) is flared in a horn-like manner, which flare constitutes the axial heat-dissipating outlet (22) of the central shaft (2).
  6. 6. The energy-saving motor structure according to claim 5, wherein a conical guide plate (252) is fixedly arranged in the middle of the axial heat dissipation outlet (22) of the rear section (25), the conical guide plate (252) and the inner wall of the axial heat dissipation outlet (22) enclose to form an annular exhaust passage (253), a plurality of first heat dissipation fan blades (254) distributed along the circumferential direction of the conical guide plate (252) at equal intervals are arranged in the annular exhaust passage (253), and two ends of each first heat dissipation fan blade (254) are fixedly connected with the outer peripheral wall of the conical guide plate (252) and the inner peripheral wall of the rear section (25) respectively.
  7. 7. An energy-saving motor structure according to claim 2, wherein the outer peripheral surface of the rear section (25) is sleeved with a collar (255), and the outer peripheral wall of the collar (255) is provided with a plurality of second heat dissipation blades (256) distributed at equal intervals along the circumferential direction thereof.
  8. 8. The energy-saving motor structure according to claim 7, wherein a second inner spline groove (2551) is formed in an inner peripheral wall of the collar (255), a second outer spline (257) which is matched with the second inner spline groove (2551) is formed in an outer peripheral surface of the rear section (25), and the second outer spline (257) is in fit engagement with the second inner spline groove (2551).
  9. 9. An energy-saving motor structure according to claim 4, wherein the diameter of the radial heat radiation hole (23) is gradually enlarged from the outer peripheral surface side of the central shaft (2) to the exhaust passage (243) side.
  10. 10. The energy-saving motor structure according to claim 6 or 7, wherein the first heat dissipation fan blade (254) and the second heat dissipation fan blade (256) are arc-shaped blades, and the bending direction of the arc-shaped blades is consistent with the rotation direction of the central shaft (2).

Description

Energy-saving motor structure Technical Field The invention relates to the technical field of motors, in particular to an energy-saving motor structure. Background The motor is used as a core power device for converting electric energy into mechanical energy, is widely applied to various fields of industrial production, civil electric appliances and the like, the running efficiency and the energy-saving performance of the motor directly influence the energy consumption and the use cost, and in the working process of the motor, a large amount of heat can be generated by the electromagnetic induction action of a stator and a rotor, so that a heat dissipation structure is designed in the motor to dissipate heat. As disclosed in chinese patent publication No. CN219329674U, a motor with heat dissipation function is disclosed, including a rotor assembly, a stator assembly and a casing, the interior of the casing forms a cavity, the rotor assembly and the stator assembly are disposed in the cavity, the stator assembly includes a stator core, an end insulation and a coil winding, the two ends of the stator core are respectively installed with the end insulation and then wound with the coil winding, an insulation heat conduction fitting is disposed in the cavity, one end of the insulation heat conduction fitting contacts with the surface of the coil winding, the other end of the insulation heat conduction fitting contacts with the casing, the insulation heat conduction fitting directly conducts the heat of the coil winding to the casing, thereby accelerating heat dissipation, and the heat of the coil winding is directly transferred to the casing through the insulation heat conduction fitting as an intermediate medium, thereby accelerating heat dissipation of the coil winding, making the motor overall structure simple, the size of the insulation heat conduction fitting can be determined according to the size of the motor, ensuring the heat dissipation speed of the coil winding without changing the size of the motor, and reducing the process difficulty and cost, and improving the production efficiency. However, in the working process of the motor, part of heat is concentrated in a matching area of the rotor and the central shaft, and because the area is tightly wrapped by the stator, a closed space is formed, air circulation is seriously blocked, heat cannot be rapidly dissipated through natural convection, heat conduction of the rotor core can be only transferred to the machine base, passive heat dissipation is realized through heat dissipation ribs on the periphery of the machine base, and the motor mainly acts on an open space inside the machine base during heat dissipation, so that the heat dissipation effect is limited. Disclosure of Invention According to the energy-saving motor structure, the hollow inner cavity is arranged on the central shaft, the axial heat dissipation outlet close to the rear end cover and the radial heat dissipation holes circumferentially distributed in the middle section of the central shaft are matched, and the heat accumulation area of the central shaft and the rotor is directly subjected to rapid heat dissipation. In order to solve the problems in the prior art, the invention provides an energy-saving motor structure, which comprises a machine base, a central shaft, a rotor and a stator, wherein the central shaft, the rotor and the stator are arranged in the machine base, the rotor is arranged on the central shaft, the stator is sleeved outside the rotor, the two ends of the machine base are respectively detachably connected with a front end cover and a rear end cover, bearings are respectively arranged in the middle of the front end cover and the rear end cover, the two ends of the central shaft are respectively rotatably connected with the bearings on the corresponding sides, a fan housing is detachably arranged at one end, close to the rear end cover, of the machine base, the central shaft is provided with a hollow inner cavity, one end, close to the front end cover, of the central shaft is in a closed shape, an axial heat dissipation outlet is formed at one end, close to the rear end, a gap is reserved between the inner ring of the rotor and the outer peripheral surface of the central shaft, radial heat dissipation holes are circumferentially uniformly distributed at the middle section of the central shaft, and the hollow inner cavity of the radial heat dissipation holes are communicated with the gap. Preferably, the central shaft is formed by coaxially splicing a front section part and a rear section part, the front section part and the rear section part are detachably connected through a key connection structure, a first exhaust passage is arranged in the front section part, a second exhaust passage is arranged in the rear section part, and the first exhaust passage and the second exhaust passage are communicated and jointly form a hollow inner cavity of the central shaft. Prefe