CN216216142U

CN216216142U - Permanent magnet reluctance synchronous motor rotor capable of reducing magnetic steel consumption

Info

Publication number: CN216216142U
Application number: CN202122835996.6U
Authority: CN
Inventors: 徐建勋
Original assignee: Taizhou Pinzun Electromechanical Co ltd
Current assignee: Taizhou Pinzun Electromechanical Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-04-05
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a permanent magnet reluctance synchronous motor rotor capable of reducing the using amount of magnetic steel, belongs to the technical field of synchronous motor rotors, and solves the problems of high manufacturing cost and inconvenient maintenance.

Description

Permanent magnet reluctance synchronous motor rotor capable of reducing magnetic steel consumption

Technical Field

The utility model relates to the field of synchronous motor rotors, in particular to a permanent magnet reluctance synchronous motor rotor capable of reducing the using amount of magnetic steel.

Background

At present, a chinese patent with publication number CN 205544851U discloses a three-phase ac permanent magnet reluctance synchronous motor rotor punching structure, which includes an annular hollow punching main body, eight sets of magnetic steel mounting through holes are provided on the annular surface of the punching main body along the circumference thereof, etc., and the angle occupied by each set of magnetic steel mounting through holes on the annular surface of the punching main body is 45 °; seven assembly reference holes are formed in the inner side face of the punching sheet main body along the circumferential line of the punching sheet main body, an included angle between two adjacent assembly reference holes is 81 degrees, and included angles between the other two adjacent assembly reference holes are 46.5 degrees.

The structure needs to punch eight groups of magnetic steel mounting through holes, has more steps on the production process, and has more magnetic steel consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, at least solves the technical problems in the related technology to a certain extent, and provides a permanent magnet reluctance synchronous motor rotor capable of reducing the using amount of magnetic steel, which has the advantage of reducing the using amount of the magnetic steel.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a can reduce permanent magnet reluctance synchronous machine rotor of magnet steel quantity, includes the rotor main part that forms by the coincide of multilayer rotor punching, the rotor punching uses the axle center to equally divide into eight sectorial regions as the center, and wherein four sectorial regions set up magnet steel installation through-hole, and four sectorial regions set up to the reluctance structure, and magnet steel installation through-hole and reluctance structure are adjacent sets up in turn.

Through the technical scheme, the magnetic steel consumption can be reduced, half of the magnetic steel consumption is reduced for a common permanent magnet synchronous motor, the region without the magnetic steel installation through hole is replaced by a magnetic resistance structure, and the magnetic steel consumption cost is greatly reduced by the structure.

Preferably, the magnetic steel mounting through hole is an arc-shaped groove, a trapezoidal groove, a V-shaped groove or an L-shaped groove, and the magnetic resistance structure is a plurality of arc-shaped magnetic resistance grooves.

Through above-mentioned technical scheme, above-mentioned structure can be applicable to the structural design at the magnet steel installation through-hole of difference.

Preferably, the center fixedly connected with pivot of rotor main part, the inside cavity of pivot sets up and is formed with first storage area and second storage area, is provided with the division board between first storage area and the second storage area, be provided with supporting edge, funnel portion and small opening on the division board, supporting edge and pivot inner wall fixed connection, the small opening is in the below of funnel portion, and the pivot is vertical state work, the lower extreme fixedly connected with lower extreme end cover of pivot, the upper end fixedly connected with upper end cover of pivot.

Preferably, the first storage region contains cooling water.

Through the technical scheme, the pivot structure adopts hollow structure, the hollow inside cooling water of placing of pivot this moment, thereby can realize the effect of cooling, the cooling water is easily volatilized by the heat in addition, by supreme down with the mode of gaseous state, from first storage area to second storage area, the liquefaction flows back to first storage area after the cooling of second storage area, the effect of division board is that the steam after can liquefying is retrieved this moment, upper end cover and lower end cover constitute airtight space, be difficult for letting steam flee from, therefore, can let the rotor main part cooling.

Preferably, a heat conductor is arranged in the first storage area, the heat conductor comprises an inner core part and a plurality of heat conducting plates, and the plurality of heat conducting plates are uniformly and radially distributed around the peripheral wall of the inner core part.

Through above-mentioned technical scheme, built-in heat conductor can further improve heat transfer efficiency, improves the radiating rate.

Preferably, the inner core is provided as a hollow structure.

Through the technical scheme, the hollow structure of the inner core part can reduce the cost of metal materials and is also favorable for heat dissipation.

Preferably, the upper end cover is provided with a bubble level gauge.

Through above-mentioned technical scheme, because it is vertical to need the pivot in this scheme, increase the bubble spirit level and can be convenient for observe and inspect whether the pivot is in vertically, whether the terminal surface is the level.

Compared with the background technology, the technical effects of the utility model are mainly reflected in the following aspects:

1. the consumption of the magnetic steel is effectively saved;

2. when the solar heat collector is used vertically, heat dissipation can be performed;

3. the maintenance is convenient.

Drawings

FIG. 1 shows the distribution and magnetic induction lines of magnetic steel mounting through holes on a rotor sheet in the first embodiment;

FIG. 2 is a schematic structural diagram of a rotor sheet according to the first embodiment;

FIG. 3 is a schematic sectional view of the structure of the first embodiment;

FIG. 4 is a top view of a thermal conductor according to an embodiment;

FIG. 5 is a top view of a heat conductor with a hollow structure according to an embodiment;

FIG. 6 is a schematic view of a second shape of a magnetic steel mounting through hole in a rotor punching sheet;

FIG. 7 is a schematic view of a third shape of a magnetic steel mounting through hole in a rotor punching sheet;

fig. 8 is a schematic view of a fourth shape of the magnetic steel mounting through hole in the rotor punching sheet.

Reference numerals: 1. a rotor body; 2. rotor punching sheets; 21. a magnetic steel mounting through hole; 22. a magnetoresistive structure; 3. a rotating shaft; 31. a first storage area; 32. a second storage area; 33. a separator plate; 331. a support edge; 332. a funnel part; 333. a leak hole; 4. a lower end cover; 5. an upper end cover; 6. a heat conductor; 61. an inner core portion; 62. a heat conducting plate; 7. a bubble level; 8. a coupling is provided.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

The first embodiment is as follows:

a permanent magnet reluctance synchronous motor rotor capable of reducing the using amount of magnetic steel is shown in a combined graph 1 and a graph 2 and comprises a rotor main body 1 formed by overlapping a plurality of layers of rotor punching sheets 2. Rotor punching 2 equally divide into eight sectorial regions with the axle center as the center, every sectorial region 45, wherein four sectorial regions set up magnet steel mounting through-hole 21, and four sectorial regions set up to magnetic resistance structure 22, and magnet steel mounting through-hole 21 and magnetic resistance structure 22 are adjacent alternately and set up. The magnetic steel mounting through hole 21 is used for mounting magnetic steel, generally 8 magnetic steels are adopted in production, and 4 magnetic steels are adopted in the structure, so that the production cost is reduced.

In other embodiments, the structure of the magnetic steel is adapted to the magnetic steel mounting through hole 21, and with respect to the design of the magnetic steel mounting through hole 21 and the design of the magnetic steel, referring to fig. 1, the magnetic steel mounting through hole 21 is an arc-shaped groove; in fig. 6, the magnetic steel mounting through hole 21 is a trapezoidal groove; FIG. 7, the magnetic steel mounting through hole 21 is a V-shaped groove; as shown in fig. 8, the magnetic steel mounting through hole 21 is an "L" shaped slot, based on the schematic shape structure of the drawing.

Also for the magnetoresistive structure 22, shown with reference to FIG. 2, there are a plurality of arc-shaped magnetoresistive trenches. With reference to fig. 1, the arrows indicate the magnetic induction lines, and the shape of the magnetic resistance structure 22 is designed to mount the magnetic induction lines, so that it can be seen that the above structure can be applied to different structural designs of the magnetic steel mounting through hole 21.

Example two:

based on the first embodiment, the rotor sheet 2 with the above structure forms a rotor main body 1, as shown in fig. 3, a rotating shaft 3 is fixedly connected to the center of the rotor main body 1, a first storage region 31 and a second storage region 32 are arranged and formed in the rotating shaft 3 in a hollow manner, a partition plate 33 is arranged between the first storage region and the second storage region, a supporting edge 331, a funnel part 332 and a leakage hole 333 are arranged on the partition plate 33, the supporting edge is fixedly connected to the inner wall of the rotating shaft 3, the leakage hole 333 is located below the funnel part 332, the rotating shaft 3 works in a vertical state, a lower end cover 4 is fixedly connected to the lower end of the rotating shaft 3, and an upper end cover 5 is fixedly connected to the upper end of the rotating shaft 3. The first storage area 31 has cooling water therein.

The heat conductor 6 is provided in the first storage area 31, the heat conductor 6 includes an inner core portion 61 and heat conductive plates 62, and the plurality of heat conductive plates 62 are uniformly radially arranged around the peripheral wall of the inner core portion 61. The built-in heat conductor 6 can further improve the heat transfer efficiency and the heat dissipation speed. For the second embodiment of the heat conductor 6, as shown with reference to fig. 5, the inner core portion 61 is provided as a hollow structure. The hollow structure of the inner core part 61 can reduce the cost of metal materials and is also beneficial to heat dissipation.

On the other hand, referring to fig. 3, a bubble level 7 is provided on the end cap. Because the rotating shaft 3 needs to be vertical in the scheme, the bubble level meter 7 is added, so that whether the rotating shaft 3 is vertical or not and whether the end face is horizontal or not can be observed and checked conveniently.

This scheme is when using, need vertically to place, 3 structures in the pivot adopt hollow structure, 3 hollow insides in pivot can place the cooling water this moment, thereby can realize the effect of cooling, the cooling water is easily volatilized by the heat in addition, by supreme down with the mode of gaseous state, from first storage area to second storage area, the liquefaction flows back to first storage area after the cooling of second storage area, the effect of division board 33 is the steam recovery after can liquefying this moment, upper end cover 5 and lower end cover 4 constitute airtight space, be difficult for letting steam escape, therefore, can let rotor main body 1 cool down. The lower end cover 4 can be connected with a coupling 8 or other shaft parts, and can also be provided with a belt wheel or a gear.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. The utility model provides a can reduce permanent magnet reluctance synchronous machine rotor of magnet steel quantity, includes rotor main part (1) that forms by multilayer rotor punching (2) coincide, characterized by: rotor punching (2) use the axle center equally divide into eight sectorial regions as the center, and wherein four sectorial regions set up magnet steel mounting through hole (21), and four sectorial regions set up to magnetic resistance structure (22), and magnet steel mounting through hole (21) and magnetic resistance structure (22) are adjacent sets up in turn.

2. The rotor of permanent magnet reluctance synchronous motor according to claim 1, wherein the magnetic steel consumption is reduced by: the magnetic steel mounting through hole (21) is an arc-shaped groove, a trapezoidal groove, a V-shaped groove or an L-shaped groove, and the magnetic resistance structure (22) is a plurality of arc-shaped magnetic resistance grooves.

3. The rotor of permanent magnet reluctance synchronous motor according to claim 1, wherein the magnetic steel consumption is reduced by: the center fixedly connected with pivot (3) of rotor main part (1), the inside cavity of pivot (3) sets up and is formed with first storage area (31) and second storage area (32), is provided with division board (33) between first storage area and the second storage area, be provided with support limit (331), funnel portion (332) and small opening (333) on division board (33), support limit and pivot (3) inner wall fixed connection, small opening (333) are in the below of funnel portion (332), and pivot (3) vertical state work, lower extreme fixedly connected with lower end cover (4) of pivot (3), upper end fixedly connected with upper end cover (5) of pivot (3).

4. The rotor of a PMSM with reduced magnetic steel usage according to claim 3, wherein: the first storage area (31) contains cooling water.

5. The rotor of a PMSM with reduced magnetic steel usage according to claim 3, wherein: a heat conductor (6) is arranged in the first storage area (31), the heat conductor (6) comprises an inner core portion (61) and heat conduction plates (62), and the heat conduction plates (62) are uniformly and radially distributed around the peripheral wall of the inner core portion (61).

6. The rotor of permanent magnet reluctance synchronous motor according to claim 5, wherein the magnetic steel consumption is reduced by: the inner core (61) is provided as a hollow structure.

7. The rotor of a PMSM with reduced magnetic steel usage according to claim 3, wherein: and the upper end cover (5) is provided with a bubble level meter (7).