A new type of stator winding insulation structure of a fan coil motor

Abstract

The application relates to the technical field of stator winding, in particular to a novel stator winding insulation structure of a fan coil motor, which comprises a stator core, the stator core is provided with winding wire slots, the stator core is provided with a stator winding at the winding wire slots, further comprises an insulation sheet main body, the insulation sheet main body is attached to the end face of the stator core, the insulation sheet main body is provided with an inner circular hole, the insulation sheet main body is provided with insulation tooth portions corresponding to the winding wire slots at the inner circular hole, the insulation tooth portions are at least partially bent and inserted into the winding wire slots, and the insulation tooth portions are at least partially clamped between the stator core and the stator winding. The device reduces the manufacturing cost of the motor, reduces the stator repair cost caused by the appearance defect, and improves the production qualified rate and production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stator winding, in particular to a novel stator winding insulation structure of a fan coil motor. BACKGROUND

[0002] The commercial fan coil motor market in China is developing rapidly, and the product output is continuously expanding. The market competition is increasingly fierce. Under the premise of not affecting the performance and quality requirements of the motor, various manufacturers improve the process of each part of the motor, reduce and eliminate product quality risks, reduce internal and external quality costs, and increase the competitiveness of their products in the market. For the motor winding insulation protection method, reference is made to Figure 1 , the traditional insulation protection adopts the way of slot-shaped insulation sheet and non-woven fabric to play an insulation protection role. This way has high cost and is relatively troublesome to install, resulting in low production efficiency. SUMMARY

[0003] The purpose of the present application is to solve the problem of high cost and troublesome installation of traditional motor winding insulation protection, which results in low production efficiency, and to provide a novel stator winding insulation structure of a fan coil motor.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A novel stator winding insulation structure of a fan coil motor, comprising a stator core, the stator core having a winding wire slot, the stator core being provided with a stator winding at the winding wire slot, further comprising an insulation sheet main body, the insulation sheet main body being arranged at the outgoing wire side of the stator core, the insulation sheet main body having an inner circular hole, the insulation sheet main body being provided with an insulation tooth portion corresponding to the winding wire slot along the radial direction of the inner circular hole, in a natural state, the insulation tooth portion covering at least part of the winding wire slot, when the winding is dropped, the insulation tooth portion is at least partially bent and inserted into the winding wire slot, and the insulation tooth portion is at least partially clamped between the stator core and the stator winding, the insulation sheet main body is bent away from the stator core.

[0006] The angle a between the two sides of the bottom of the insulation sheet slot is 9°, the insulation sheet slot is rounded at the intersection with a circle with a radius R3 of 39.75-40.01mm, and the rounded corner is a circle with a radius R2 of 5mm, the top arc radius R1 of the insulation sheet slot is 0.5-0.77mm.

[0007] The inner diameter of the insulation sheet main body is 86.85-87.15mm, and the outer diameter is 95.85-96.15mm.

[0008] The outer circumference of the insulating sheet body has an insulating protective lug corresponding to the core cut edge bolt hole of the stator core, the insulating protective lug is bent away from the stator core, and the side of the insulating protective lug away from the stator core is attached to the outer circumference of the winding.

[0009] The insulating protective lug is trapezoidal in whole, the edge is circular arc, the upper base width is 24.67-32.71 mm, and the lower base width is 32.93-38.88 mm.

[0010] The insulating sheet body is made of a polyester film.

[0011] The novel stator winding insulation structure of the wind disc pipe motor has the advantages that the device reduces the material waste of the slot-shaped insulating sheet and the outer circular non-woven fabric, reduces the manufacturing cost of the motor, effectively solves the appearance defect caused by the original slot-shaped insulating sheet, thereby reducing the stator repair cost caused by the appearance defect, and improving the production qualified rate and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a prior art structure schematic diagram;

[0013] Figure 2 It is a stator winding insulation structure assembly schematic diagram of the application;

[0014] Figure 3 It is an insulating sheet body structure schematic diagram of the application;

[0015] Figure 4 It is an insulating sheet body local enlarged structure schematic diagram of the application;

[0016] Figure 5 It is a stator core structure schematic diagram;

[0017] Figure 6 It is an insulating sheet body and stator core position structure schematic diagram.

[0018] In the figure: stator core 1, core cut edge bolt hole 2, insulating tooth part 3, insulating protective lug 4, insulating sheet body 5, insulating sheet groove 6, winding wire groove 7, stator winding 8. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0020] Reference Figures 2-6The application discloses a novel stator winding insulation structure of a wind disc tube motor, which comprises a stator core 1, the stator core 1 is provided with winding wire grooves 7, the stator core 1 is provided with a stator winding 8 at the winding wire grooves 7, and the novel stator winding insulation structure further comprises an insulation sheet body 5 which is arranged at a wire outlet side of the stator core 1, wherein the wire outlet side is a side where a motor power line is arranged, the insulation sheet body 5 is provided with an inner circular hole, the insulation sheet body 5 is in a natural state and has a ring body sheet structure, the insulation sheet body 5 is provided with insulation tooth portions 3 corresponding to the winding wire grooves 7 along a radial direction of the inner circular hole, the insulation tooth portions 3 at least cover parts of the winding wire grooves 7 in a natural state, and the insulation tooth portions 3 cover the parts of the winding wire grooves 7 corresponding to the insulation tooth portions 3 in a circumferential direction of the stator core, when winding is finished, the insulation tooth portions 3 are at least partially bent and inserted into the winding wire grooves 7, and the insulation tooth portions 3 are at least partially clamped between the stator core 1 and the stator winding 8, and the insulation sheet body 5 is bent away from the stator core 1, since the insulation tooth portions 3 at least cover the parts of the winding wire grooves 7, with the winding wire being gradually wound on the stator core, the insulation tooth portions 3 on the inner side of the planar insulation sheet body 5 are gradually pressed between the stator core 1 and the stator winding 8, meanwhile, the insulation sheet body 5 is also warped in a direction opposite to the bending direction of the insulation tooth portions 3, after the winding is completed, the insulation sheet body 5 is finally bundled by a binding line, and the insulation sheet body 5 is bundled and wrapped on an outer circumferential surface of the stator core on a side where the winding protrudes. The device reduces material waste of the slot-shaped insulation sheet and the outer circular non-woven fabric, reduces the manufacturing cost of the motor, fixes the insulation sheet body 5 on the stator core through cooperation of the insulation tooth portions 3 and the stator winding, effectively solves the appearance defect caused by the original slot-shaped insulation sheet warping, thereby reducing the stator repair cost caused by the appearance defect, and improving the production qualified rate and production efficiency.

[0021] The insulation sheet body 5 is made of a polyester film, the polyester film has better performance than the non-woven fabric in terms of dielectric strength, temperature resistance and the like, has better protection on the winding insulation system, and can effectively improve the quality of the motor.

[0022] Specifically, referring to Figure 4 , the adjacent insulation tooth portions 3 are defined as insulation sheet grooves 6, an included angle a of two sides of a bottom of the insulation sheet groove 6 is 9°, the insulation sheet groove 6 is provided with a round corner with a radius R2 of 5 mm at a position where the insulation sheet groove 6 intersects with a circle with a radius R3 of 39.75-40.01 mm, and a radius R1 of a top circular arc of the insulation sheet groove 6 is 0.5-0.77 mm. The inner diameter size of the insulation sheet body 5 is 86.85-87.15 mm, and the outer diameter size is 95.85-96.15 mm.

[0023] The outer circumference of the insulating sheet body 5 has an insulating protection ear 4 corresponding to the core cut edge bolt hole 2 of the stator core 1, the insulating protection ear 4 is bent away from the stator core 1, and the side of the insulating protection ear 4 away from the stator core 1 is attached to the outer circumference of the winding. As the winding works, the planar insulating sheet body 5 gradually changes into a mechanism bent to both sides along the axial direction, that is, the insulating tooth portion 3 is bent to the inside of the stator core, the insulating sheet body 5 and the insulating protection ear 4 are bent away from the stator core 1, and after the winding is completed, the insulating sheet body 5 and the insulating protection ear 4 are wrapped around the outer circumference of the winding protruding from the stator core 1 by binding with a binding wire. In this way, when the bolt is installed, the bolt and the winding are separated by the insulating protection ear 4. The insulating protection ear 4 is trapezoidal in shape, the edge is arc-shaped, the upper base width is 24.67-32.71mm, and the lower base width is 32.93-38.88mm. The winding at the bolt hole is protected by the insulating protection ear 4 of the insulating sheet body 5, effectively reducing the vertical line and flying line caused by the stator winding, reducing the breakdown and voltage resistance hidden danger caused by insufficient bolt hole bolt creepage distance, and improving the workshop production efficiency and reducing the after-sales repair rate, thereby prolonging the service life of the motor.

[0024] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can obtain technical solutions, concepts and designs within the technical range disclosed by the present application according to the technical solutions and inventive concepts of the present application, and the obtained technical solutions, concepts and designs should be covered within the protection scope of the present application.

Claims

1. A novel stator winding insulation structure for a fan coil motor, comprising a stator core (1), wherein the stator core (1) has winding slots (7), and the stator core (1) is provided with stator windings (8) located in the winding slots (7), characterized in that, The insulation sheet body (5) is provided at the outgoing line side of the stator core (1), has an inner circular hole, and is provided with insulation tooth portions (3) corresponding to the winding wire slots (7) along the radial direction of the inner circular hole. In a natural state, the insulation tooth portions (3) cover at least part of the winding wire slots (7), and when the winding is dropped, the insulation tooth portions (3) are at least partially bent and inserted into the winding wire slots (7), and the insulation tooth portions (3) are at least partially clamped between the stator core (1) and the stator winding (8). The insulation sheet body (5) is bent towards the side away from the stator core (1), and at the same time, the insulation sheet body is also warped in the opposite direction of the bending of the insulation tooth portions. After the winding is completed, the insulation sheet body is finally bundled and wrapped on the outer circumferential surface of the stator winding protruding from the side of the stator core by a binding wire.

2. A new type of stator winding insulation structure for a fan coil motor according to claim 1, characterized in that, The insulation sheet slots (6) are defined between adjacent insulation tooth portions (3), and the included angle a of the two sides of the bottom of the insulation sheet slots (6) is 9°. The insulation sheet slots (6) are rounded at the intersection with a circle with a radius R3 of 39.75-40.01 mm, and the rounded corners have a radius R2 of 5 mm. The top of the insulation sheet slots (6) has a radius R1 of 0.5-0.77 mm.

3. A new type of stator winding insulation structure for a fan coil motor according to claim 1, characterized in that, The inner diameter of the insulation sheet body (5) is 86.85-87.15 mm, and the outer diameter is 95.85-96.15 mm.

4. A new type of stator winding insulation structure for a fan coil motor according to any one of claims 1-3, characterized in that, The outer circumference of the insulation sheet body (5) has insulation protection ears (4) corresponding to the core cut edge bolt holes (2) of the stator core (1). The insulation protection ears (4) are bent towards the side away from the stator core (1), and the side away from the stator core (1) of the insulation protection ears (4) is attached to the outer circumference of the winding.

5. A new type of stator winding insulation structure for a fan coil motor according to claim 4, characterized in that, The insulation protection ears (4) are trapezoidal in shape, and the edges are circularly arcuate. The upper base width is 24.67-32.71 mm, and the lower base width is 32.93-38.88 mm.

6. A new type of stator winding insulation structure for a fan coil motor according to claim 1 or 2 or 3 or 5, characterized in that, The insulation sheet body (5) is made of a polyester film.

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