Asynchronous starting permanent magnet synchronous motor rotor sheet

Abstract

The utility model discloses an asynchronous starting permanent magnet synchronous motor rotor sheet, comprising a rotor core sheet, the center of the rotor core sheet is provided with a mounting hole matched with a rotating shaft, and the edge of the rotor core sheet is uniformly provided with a plurality of inductance holes along the circumferential direction. A plurality of magnetic insertion holes matched with the inductance holes are uniformly formed in the rotor core sheet along the circumferential direction of the mounting hole, the magnetic insertion holes are V-shaped, the openings of the magnetic insertion holes face outwards, and the number of the magnetic insertion holes is one of 4, 8 or 10. Therefore, under the condition that more energy is saved, low-rotating-speed and large-torque output can be carried out, and starting and stable rotation of equipment such as a draught fan are facilitated when the device is used for driving the draught fan and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor rotor sheet technical field especially relates to a kind of asynchronous starting permanent magnet synchronous motor rotor sheet. BACKGROUND

[0002] The rotor of permanent magnet synchronous motor is combined by multiple rotor sheets, and the structure of the rotor sheet affects the performance of the motor during operation. The Chinese patent application with application number 202221238996.6 discloses a V-slot asynchronous starting permanent magnet synchronous motor rotor punching sheet, which optimizes the size of the magnetic isolation bridge. This design effectively improves the electromagnetic performance of the motor while considering the mechanical strength of the rotor, thereby improving the overall performance of the motor. However, this design is more suitable for high-speed rotation and is not suitable for situations that require low-speed rotation and large output torque, such as starting and rotating a fan. SUMMARY

[0003] To overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide an asynchronous starting permanent magnet synchronous motor rotor sheet that optimizes the structure of the rotor sheet to improve the performance of the rotor sheet in dealing with low speed and high torque output.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a kind of asynchronous starting permanent magnet synchronous motor rotor sheet, including rotor core sheet, the center of the rotor core sheet is equipped with the installation hole being cooperated with rotating shaft, the installation hole is equipped with opposite clamping slot, to facilitate and rotating shaft connection, and the ratio of the diameter of the rotor core sheet and the diameter of the installation hole is 4:1, the edge of the rotor core sheet is also evenly provided with several inductive holes along the circumference, preferably, the inductive hole is one of square, circular or bottle-shaped, the rotor core sheet is evenly provided with several plug-in magnetic holes being cooperated with the inductive hole along the circumference of the installation hole, the shape of the plug-in magnetic hole is V type, the width of the plug-in magnetic hole is 2.6mm, the included angle of the plug-in magnetic hole is transitioned using circular arc, the opening of the plug-in magnetic hole is outward, and the number of plug-in magnetic holes is one of 4, 8 or 10.

[0006] The rotor core sheet is also provided with a magnetic isolation hole cooperated with the included angle of the plug-in magnetic hole, and the magnetic isolation hole is arranged between the included angle of the plug-in magnetic hole and the installation hole. The number of magnetic isolation holes is the same as the number of plug-in magnetic holes.

[0007] The utility model has the following advantages:

[0008] The utility model discloses a rotor sheet structure is optimized, makes it can be in more energy -conserving condition lower speed and greater torque output, facilitates its start -up and steady rotation when driving fan equipment. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a kind of asynchronous starting permanent magnet synchronous motor rotor sheet principle schematic diagram provided in the specific embodiment of the utility model;

[0010] In the drawing,

[0011] 1, rotor core piece;11, mounting hole;12, inductance hole;13, insert magnetic hole;14, magnetic gap;15, clamping groove. DETAILED DESCRIPTION

[0012] The technical scheme of the utility model is further illustrated in the specific embodiment in combination with the drawings.

[0013] Example 1: as Figure 1 The utility model discloses a kind of asynchronous starting permanent magnet synchronous motor rotor sheet, including rotor core piece 1, the center of rotor core piece 1 is set with and the mounting hole 11 of rotation axis cooperation, mounting hole 11 is set with opposite clamping groove 15, to facilitate installation, wherein the ratio of the diameter of rotor core piece 1 and the diameter of mounting hole 11 is 4:1, rotor core piece 1 edge is also evenly set with several inductance holes 12 along circumference, inductance hole 12 is one of square, circular or bottle shape, when installing, after inserting copper bar or aluminium strip as conducting strip in inductance hole 12, inductance hole 12 is poured into shape again;Rotor core piece 1 is evenly provided with several and inductance hole 12 cooperation's insert magnetic hole 13 along the circumference of mounting hole 11, the shape of insert magnetic hole 13 is V type, the opening of insert magnetic hole 13 is outward, the width of insert magnetic hole 13 is 2.6mm, the included angle of insert magnetic hole 13 uses arc transition, permanent magnet is inserted in insert magnetic hole 13, further, rotor core piece 1 is also set with and the magnetic gap 14 of insert magnetic hole 13 included angle cooperation, magnetic gap 14 is set between the included angle of insert magnetic hole 13 and mounting hole 11, the number of magnetic gap 14 setting and insert magnetic hole 13 included angle setting number is same, and magnetic material is loaded in magnetic gap 14, the number of insert magnetic hole 13 setting is 4, the working speed of motor can reach 1500r / min at this time, and output torque is 10N / M.

[0014] Embodiment 2: an asynchronous starting permanent magnet synchronous motor rotor sheet, comprising a rotor core sheet 1, a mounting hole 11 is arranged in the center of the rotor core sheet 1 and matched with a rotating shaft, the mounting hole 11 is provided with opposite clamping grooves 15 to facilitate installation, wherein the ratio of the diameter of the rotor core sheet 1 to the diameter of the mounting hole 11 is 4:1, a plurality of inductance holes 12 are evenly arranged on the edge of the rotor core sheet 1 along the circumference, the inductance hole 12 is one of square, circular or bottle-shaped, and after a copper strip or an aluminum strip is inserted into the inductance hole 12 as a conductive strip during installation, the inductance hole 12 is injected and formed; a plurality of magnetic insertion holes 13 matched with the inductance hole 12 are evenly arranged on the rotor core sheet 1 along the circumference of the mounting hole 11, the magnetic insertion hole 13 is V-shaped, the opening of the magnetic insertion hole 13 is outward, the width of the magnetic insertion hole 13 is 2.6mm, the included angle of the magnetic insertion hole 13 is transitioned by a circular arc, a permanent magnet is inserted into the magnetic insertion hole 13, further, a magnetic separation hole 14 matched with the included angle of the magnetic insertion hole 13 is arranged on the rotor core sheet 1, the magnetic separation hole 14 is arranged between the included angle of the magnetic insertion hole 13 and the mounting hole 11, the number of the magnetic separation hole 14 is the same as that of the magnetic insertion hole 13, a magnetic separation material is arranged in the magnetic separation hole 14, and the number of the magnetic insertion hole 13 is 8, at this time, the working speed of the motor can reach 750r / min, and the output torque is 21N / M.

[0015] Embodiment 3: an asynchronous starting permanent magnet synchronous motor rotor sheet, comprising a rotor core sheet 1, a mounting hole 11 is arranged in the center of the rotor core sheet 1 and matched with a rotating shaft, the mounting hole 11 is provided with opposite clamping grooves 15 to facilitate installation, wherein the ratio of the diameter of the rotor core sheet 1 to the diameter of the mounting hole 11 is 4:1, a plurality of inductance holes 12 are evenly arranged on the edge of the rotor core sheet 1 along the circumference, the inductance hole 12 is one of square, circular or bottle-shaped, and after a copper strip or an aluminum strip is inserted into the inductance hole 12 as a conductive strip during installation, the inductance hole 12 is injected and formed; a plurality of magnetic insertion holes 13 matched with the inductance hole 12 are evenly arranged on the rotor core sheet 1 along the circumference of the mounting hole 11, the magnetic insertion hole 13 is V-shaped, the opening of the magnetic insertion hole 13 is outward, the width of the magnetic insertion hole 13 is 2.6mm, the included angle of the magnetic insertion hole 13 is transitioned by a circular arc, a permanent magnet is inserted into the magnetic insertion hole 13, further, a magnetic separation hole 14 matched with the included angle of the magnetic insertion hole 13 is arranged on the rotor core sheet 1, the magnetic separation hole 14 is arranged between the included angle of the magnetic insertion hole 13 and the mounting hole 11, the number of the magnetic separation hole 14 is the same as that of the magnetic insertion hole 13, a magnetic separation material is arranged in the magnetic separation hole 14, and the number of the magnetic insertion hole 13 is 10, at this time, the working speed of the motor can reach 580r / min, and the output torque is 36N / M.

[0016] The utility model discloses the description through the preferred embodiment, and the person skilled in the art knows that various changes or equivalent replacement can be made to these features and embodiments without departing from the spirit and scope of the utility model. The utility model is not limited by the specific embodiments disclosed here, and other embodiments falling within the claims of the present application all belong to the scope of protection of the utility model.

Claims

1. An asynchronous starting permanent magnet synchronous motor rotor sheet, comprising a rotor core sheet (1), a mounting hole (11) matched with a rotating shaft is arranged in the center of the rotor core sheet (1), characterized in that: The rotor core piece (1) edge is also evenly opened along the circumference several inductance holes (12), the rotor core piece (1) is evenly provided with several and the inductance hole (12) cooperation's magnetic insertion hole (13) along the installation hole (11) circumferential, the magnetic insertion hole (13) shape is V type, the magnetic insertion hole (13) opening is outward, the magnetic insertion hole (13) setting number is one of 4, 8 or 10.

2. The rotor piece of the asynchronous starting permanent magnet synchronous motor according to claim 1, wherein: The rotor core piece (1) is also provided with a magnetic insertion hole (13) angle cooperation's magnetic separation hole (14), the magnetic separation hole (14) is arranged between the magnetic insertion hole (13) angle and the installation hole (11), the number of the magnetic separation hole (14) is arranged and the same as the magnetic insertion hole (13) angle arrangement number.

3. The rotor piece of the asynchronous starting permanent magnet synchronous motor according to claim 1, wherein: The inductance hole (12) is one of square, circular or bottle shape.

4. The rotor piece of the asynchronous starting permanent magnet synchronous motor according to claim 1, wherein: The installation hole (11) is provided with opposite clamping grooves (15).

5. The rotor piece of the asynchronous starting permanent magnet synchronous motor according to claim 1, wherein: The ratio of the diameter of the rotor core piece (1) to the diameter of the installation hole (11) is 4:

1.

6. The rotor piece of the asynchronous starting permanent magnet synchronous motor according to claim 1, wherein: The width of the magnetic insertion hole (13) is 2.6mm, and the angle of the magnetic insertion hole (13) is transitioned by a circular arc.

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