Shaded pole motor with asymmetric winding and mutual inductance rotor

Abstract

The invention relates to the technical field of shaded pole motors and asynchronous motors, and discloses a shaded pole motor of an asymmetric winding and a mutual inductance rotor, which comprises a stator assembly and a rotor assembly, the stator assembly is provided with a stator core made of a low-cost black-annealed steel strip Q195 material and silicon steel materials of all brands, and a stator winding made of asymmetric aluminum enameled wires, copper-clad aluminum enameled wires and copper enameled wires. The rotor assembly is provided with a rotor core made of a low-cost black annealing steel strip Q195 material and silicon steel materials of all brands, and a cast-aluminum rotor with a slotted mutual inductance end ring, and through the technical innovation design of asymmetric windings and the mutual inductance end ring, the material cost is effectively reduced, the application range of the asynchronous motor material is widened, and the production efficiency is improved. The starting torque, the rated operation efficiency and the rotating speed of the shaded pole motor or the asynchronous motor are improved, and the utilization of rare copper resources is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-cost high-efficiency high-speed cage motor or asynchronous motor, and relates to the magnetic potential difference generated by asymmetric winding, mutual inductance end ring induced rotor starting technology and rated operating current change, which reduces the rotor core iron loss, reduces the stator winding copper loss and the aluminum loss of the induced rotor, and specifically relates to a cage motor or asynchronous motor with large starting torque, high rated speed and high efficiency. BACKGROUND

[0002] The conventional cage motor has small starting torque, low efficiency and high rated speed. In order to meet the industry standard requirements of the cage motor, high-grade low-loss silicon steel material and copper enameled wire must be used, and even in order to start the characteristics, the end ring must be made of large low-resistance copper material, which causes high material cost of the cage motor.

[0003] In order to save energy and reduce emissions, effectively control rare copper resources, and implement the national policy of replacing copper with aluminum to reduce the application of copper resources, while solving the starting characteristics of the cage, improving the starting torque and rated operating speed and efficiency have become the research direction and topic of many technical personnel, and also the need of industrial development. SUMMARY

[0004] The purpose of the present application is to provide a new low-cost high-efficiency asymmetric winding and mutual inductance rotor technology cage motor technology system, which can solve the problems in the background technology.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a new low-cost high-efficiency asymmetric winding and mutual inductance rotor technology cage motor technology system, comprising a front end cover 1, a rear end cover 12, a lead wire 2, a rotating shaft 3, a bearing 4, a gasket 5, a rotor assembly 6 and a stator assembly 9.

[0006] The rotor assembly 6 is provided with a slotted mutual inductance end ring 7 and a rotor core 8, the material of the rotor core is low-cost black steel strip Q195 material or all grades of silicon steel material, and the rotor core material is expanded wide, and low-cost material can be applied;

[0007] The stator assembly 9 is provided with a stator core 10 and a stator asymmetric winding 11, the material of the stator core is low-cost black steel strip Q195 material and all grades of silicon steel material, and the rotor core material is expanded wide and can be applied. The stator winding 11 is an aluminum enameled wire, a copper-clad aluminum enameled wire or a copper enameled wire stator winding;

[0008] The technical innovation design of the stator asymmetric winding 11 and the slotted mutual inductance end ring 7 effectively reduces the material cost and the wide application of the cage motor material, improves the starting torque, the rated operating efficiency and the speed of the cage, and reduces the use of rare copper resources.

[0009] The stator asymmetric winding 11 and the slotted mutual inductor end ring 7 are preferably matched for use in the development of the shielded motor, which can reduce the material cost of the shielded motor, improve the starting torque, rated operating efficiency and rated speed of the motor, and achieve the purpose of energy saving and emission reduction.

[0010] The stator asymmetric winding 11 can be used alone for the development of the shielded motor, which can reduce the material cost of the shielded motor, improve the starting torque, rated operating efficiency and rated speed of the motor, and achieve the purpose of energy saving and emission reduction.

[0011] The slotted mutual inductor end ring 7 can be used independently for the development of the shielded motor, which can reduce the material cost of the shielded motor, improve the starting torque, rated operating efficiency and rated speed of the motor, and achieve the purpose of energy saving and emission reduction.

[0012] The stator asymmetric winding 11 and the slotted mutual inductor end ring 7 developed by the motor are preferably made of low-cost black steel strip Q195 material.

[0013] The stator asymmetric winding 11 and the slotted mutual inductor end ring 7 developed by the motor are preferably made of low-cost black steel strip Q195 material.

[0014] The stator asymmetric winding 11 and the slotted mutual inductor end ring 7 developed by the motor are preferably made of low-cost black steel strip Q195 material.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] 1. The shielded motor developed by the new low-cost high-efficiency asymmetric winding and mutual inductor rotor technology system can reduce the material cost by more than 25%.

[0017] 2. The shielded motor developed by the new low-cost high-efficiency asymmetric winding and mutual inductor rotor technology system can improve the starting torque by more than 20%, the rated speed by more than 10%, and the efficiency by 2-5% under the same volume. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment 1;

[0019] Figure 2 It is a schematic diagram of the rotor assembly structure of the embodiment 1;

[0020] Figure 3 It is a left view of Figure 2 ;

[0021] Figure 4 It is a right view of Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the rotor assembly structure of Comparative Example 1;

[0023] Figure 6 It is the left view of comparative example 1;

[0024] Figure 7 Schematic diagram of the asymmetric stator winding of Example 1;

[0025] Figure 8 Schematic diagram of the stator asymmetric winding of Example 2. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] like Figures 1-4 As shown, a shaded-pole motor with asymmetric winding and mutual inductance rotor includes a front cover 1 and a rear cover 12, lead wires 2, a rotating shaft 3, a bearing 4, a gasket 5, a rotor assembly 6 and a stator assembly 9.

[0029] The rotor assembly 6 is provided with a slotted mutual inductance end ring 7 and a rotor core 8. The slotted mutual inductance end ring 7 is a slotted mutual inductance end ring. The rotor core material is a low-cost black annealed steel strip Q195 material and all grades of silicon steel material. The rotor core material is wide and low-cost materials can be applied.

[0030] The stator assembly 9 is provided with a stator core 10 and a stator winding. The stator core material is low-cost black annealed steel strip Q195 material and all grades of silicon steel materials. The rotor core material can be applied with a wide range of extensions.

[0031] The stator winding adopts a stator asymmetric winding 11, which is a stator winding of aluminum enameled wire, copper-clad aluminum enameled wire and copper enameled wire;

[0032] The technical innovation design of the stator asymmetric winding 11 and the slotted mutual inductance end ring 7 effectively reduces material costs and widens the application of shaded-pole motor materials, improves the shaded-pole starting torque and rated operating efficiency and speed, and reduces the utilization of scarce copper resources.

[0033] The number of slots of the slotted mutual inductance end ring 7 is 3, 6, 9, 12, 15, 18 ... 3N, where N is a natural number. The slotted inner end ring is a triangular structure, the slot structure is an anisotropic quadrilateral, and the slot width is 0.5 mm to 4 mm.

[0034] like Figure 7 As shown, the stator asymmetric winding 11 winding form: P is the number of poles

[0035] For 2P-pole motors, winding 1 is 1.02 to 1.3 times the basic winding, and winding 2 is 0.7 to 0.98 times the basic winding.

[0036] The asymmetric winding and mutual induction rotor are applied to shaded pole motors and asynchronous motors.

[0037] The stator asymmetric winding and the cast aluminum rotor with slotted mutual inductance end rings are applied in matching with each other or independently.

[0038] Example 2

[0039] like Figure 8 As shown, the stator asymmetric winding 11 winding form: P is the number of poles

[0040] 4P pole motor, 4P pole motor, winding 1 is 1.05-1.25 times the basic winding, winding 2 is 0.75-0.95 times the basic winding, winding 3 is 1.05-1.25 times the basic winding, winding 4 is 0.75-0.95 times the basic winding, the rest is the same as in Example 1.

[0041] Example 3

[0042] Stator asymmetric winding 11 Winding form: P is the number of poles

[0043] 6P pole motor, 4P pole motor, winding 1 is 1.05-1.25 times the basic winding, winding 2 is 0.75-0.95 times the basic winding, winding 3 is 1.05-1.25 times the basic winding, winding 4 is 0.75-0.95 times the basic winding, winding 5 is 1.05-1.25 times the basic winding, winding 6 is 0.75-0.95 times the basic winding, and the rest is the same as in Example 1.

[0044] Comparative Example 1

[0045] like Figures 5-6 As shown, the rotor assembly is provided with a mutual inductance end ring 7a and a rotor core 8a. The rest is the same as in Example 1.

[0046] Comparative Example 2

[0047] The stator windings have the same number of windings.

[0048] Implementation principles, logic and process:

[0049] 1), Stator asymmetric winding 11 due to winding asymmetry, adjacent winding number of turns, forming an asymmetric winding, the magnetic field generated by the power difference in the magnetic potential, improve the starting torque, due to the existence of the magnetic potential difference, the shield motor starting torque for secondary compensation, while reducing the rotor core iron loss and winding loss, so that the use of low-cost materials motor efficiency will be improved and the rated speed is improved;

[0050] 2), Slot mutual inductance end ring 7 cast aluminum rotor, there are end ring slot, transient power, induction rotor due to end ring slot, induction rotor resistance increases, induction rotor starting torque increases. After the motor starts, the current of the adjacent end ring of the slot is greater than that of the end ring between the slots, and the mutual inductance current is formed immediately, causing the end ring current to increase, and the mutual inductance current weakens the rotor core iron loss. In this way, the induction rotor current increases, the motor speed increases and the efficiency improves.

[0051] 3), A shield motor simultaneously applies stator asymmetric winding 11 and slot mutual inductance end ring 7 cast aluminum rotor technology, through the above two technical principles and logic, mutual superposition, so that the motor starting torque increases, the rotor core loss decreases, the stator winding and the induction rotor loss decreases, and the motor rated operating efficiency and speed are improved, and the overall material cost is reduced.

Claims

1. A shaded-pole motor with asymmetric windings and a mutual inductance rotor, characterized in that: It comprises a front end cover (1), a rear end cover (12), a lead wire (2), a rotating shaft (3), a bearing (4), a gasket (5), a rotor assembly (6) and a stator assembly (9); The rotor assembly (6) is provided with a slotted mutual inductance end ring (7) and a rotor core (8); The stator assembly (9) is provided with a stator core (10) and a stator asymmetric winding (11), wherein the stator asymmetric winding (11) is a stator winding of aluminum enameled wire, copper-clad aluminum enameled wire or copper enameled wire.

2. The shaded-pole motor with asymmetric windings and a mutual inductance rotor according to claim 1, characterized in that: The slotted mutual inductance end ring (7) has a slot number of 3, 6, 9, 12, 15, 18 ... 3N, where N is a natural number, wherein the slotted inner end ring has a triangular structure, the slot structure is an anisotropic quadrilateral, and the slot width is 0.5 mm to 4 mm.

3. The shaded-pole motor with asymmetric windings and a mutual inductance rotor according to claim 1, characterized in that: The stator asymmetric winding (11) has the following winding forms: P is the number of poles A. 2P-pole motor, winding 1 is 1.02 to 1.3 times the basic winding, winding 2 is 0.7 to 0.98 times the basic winding B. 4P-pole motor, winding 1 is 1.05-1.25 times of the basic winding, winding 2 is 0.75-0.95 times of the basic winding, winding 3 is 1.05-1.25 times of the basic winding, and winding 4 is 0.75-0.95 times of the basic winding; Reasoning and calculation are performed according to class assignment.

4. The shaded-pole motor with asymmetric windings and a mutual inductance rotor according to claim 1, characterized in that: The rotor iron core (8) and the stator iron core (10) are respectively made of low-cost black annealed steel strip Q195 material or silicon steel materials of all grades.

5. The shaded-pole motor with asymmetric windings and a mutual inductance rotor according to claim 1, characterized in that: The stator winding material is aluminum enameled wire, copper-clad aluminum enameled wire, electroplated copper enameled wire or copper enameled wire.

6. The asymmetric winding and slotted mutual inductance end ring according to any one of claims 1 to 5, characterized in that: Applicable to shaded pole motors and asynchronous motors.

7. The asymmetric winding and slotted mutual inductance end ring according to claim 6, characterized in that: The stator asymmetric winding (11) and the cast aluminum rotor with slotted mutual inductance end ring (7) are used in matching or independently.

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