Stator insulation frame, motor stator, motor, air conditioner

Abstract

The present invention provides a stator insulation frame, a motor stator, a motor, and an air conditioner, wherein the stator insulation frame includes a frame body, the frame body has an insulation tooth portion corresponding to the winding on the stator core and a winding connection side away from the stator core, and also includes an insulating sheath, the insulating sheath is detachably connected to the winding connection side to cover the winding on the side of the insulating sheath facing the stator core. According to the present invention, insulation isolation can be formed between the winding on the side of the insulating sheath facing the stator core and the end cover on the side of the insulating sheath away from the stator core, effectively preventing the lead wire of the winding from contacting the end cover to cause a short circuit in the motor, and there is no need to retain a large electrical safety distance between the winding and the end cover as in the prior art, thereby effectively reducing the axial space inside the motor, and further reducing the volume of the motor.

Description

Technical Field

[0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a stator insulation frame, a motor stator, a motor, and an air conditioner. Background Art

[0002] At present, environmental quality has attracted more and more attention and attention from people. The purification of indoor micro-environment, especially the overall solution of air purification and temperature regulation, needs to be solved urgently. This requires a fresh air environment control integrated air conditioner that can not only adjust the indoor temperature but also purify the air. As one of the core components inside the fresh air environment control integrated air conditioner, the stability of the motor is particularly important. One of the important factors affecting the stability of the motor is the insulation problem inside the motor. It is particularly important to solve and prevent the insulation problem between the winding of the internal energized parts and the end cover and the iron core of the conductive parts. Otherwise, it is very easy to cause the motor to short-circuit and burn the machine, thereby causing the fresh air environment control integrated air conditioner to malfunction, resulting in the inability to purify the air and adjust the temperature normally. The current conventional insulation technology is to use a skeleton to isolate the motor winding and the iron core for insulation, and leave a large enough gap between the winding and the end cover. There are no other protective insulation measures, which wastes the internal space of the motor. Summary of the invention

[0003] Therefore, the present invention provides a stator insulation frame, a motor stator, a motor, and an air conditioner, which can overcome the shortcomings of the related art that a large electrical safety distance is reserved between the winding and the motor end cover for insulation protection, resulting in a large motor space requirement and a waste of internal motor space.

[0004] In order to solve the above problems, the present invention provides a stator insulation frame, including a frame body, the frame body having an insulating tooth portion corresponding to the winding on the stator core and a winding connection side facing away from the stator core, and also including an insulating sheath, the insulating sheath being detachably connected to the winding connection side to cover the winding on the side of the insulating sheath facing the stator core.

[0005] In some embodiments, the insulating sheath is snap-connected to the skeleton body.

[0006] In some embodiments, the skeleton body has a plurality of positioning columns on the winding connection side, and the positioning columns are arranged to protrude from the winding connection side along the axial direction of the stator core. The positioning columns are located on the radially outer side of the stator core and are provided with wiring grooves, and the lead wires of the windings can run in the wiring grooves.

[0007] In some embodiments, the insulating sheath has an annular plate body and a cylinder body located at the edge of the annular plate body. When the insulating sheath is connected to the skeleton body, the cylinder body is sleeved on the radial outer side of the positioning column.

[0008] In some embodiments, the inner side of the cylinder has a plurality of fixing columns, and the plurality of fixing columns are respectively arranged corresponding to the plurality of positioning columns to prevent the lead-out wires from falling out of the wiring groove.

[0009] In some embodiments, the end of the fixing column facing the stator core is an arc surface.

[0010] In some embodiments, a plurality of positioning holes are configured on the annular plate body, and when the insulating sheath is connected to the skeleton body, the free ends of the plurality of positioning posts are respectively inserted into the plurality of positioning holes in a one-to-one correspondence.

[0011] In some embodiments, a plurality of notches are formed on the end surface of the cylinder facing the stator core; and / or a plurality of protrusions are provided on the outer circumferential surface of the cylinder.

[0012] The present invention also provides a motor stator, comprising the above-mentioned stator insulation frame.

[0013] The present invention also provides a motor, comprising the motor stator mentioned above.

[0014] The present invention also provides an air conditioner, comprising the above-mentioned motor.

[0015] The present invention provides a stator insulation frame, a motor stator, a motor, and an air conditioner, wherein the insulating sheath is connected at the connection side of the winding, so that insulation isolation can be formed between the winding on the side of the insulating sheath facing the stator core and the end cover on the side of the insulating sheath away from the stator core, effectively preventing the lead wire of the winding from contacting the end cover and causing a short circuit in the motor, and there is no need to retain a large electrical safety distance between the winding and the end cover as in the prior art, thereby effectively reducing the axial space inside the motor and further reducing the size of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the insulating sheath in the stator insulating frame of an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of AA;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure of the medium BB;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the frame body in the stator insulation frame of an embodiment of the present invention;

[0020] Figure 5Schematic diagram of the three-dimensional structure of the motor stator according to an embodiment of the present invention (wherein the insulating sheath is not assembled);

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the motor stator according to an embodiment of the present invention (wherein the insulating sheath has been assembled);

[0022] Figure 7 for Figure 6 Schematic diagram of the structure of CC;

[0023] Figure 8 for Figure 6 Schematic diagram of the structure of DD;

[0024] Fig. 9 is a schematic diagram of the three-dimensional structure of a motor according to an embodiment of the present invention;

[0025] Fig.10 is a schematic diagram of the internal structure of a motor according to an embodiment of the present invention;

[0026] Fig.11 Schematic diagram of the internal structure of an air conditioner according to an embodiment of the present invention (partial).

[0027] The reference numerals are as follows:

[0028] 1. Skeleton body; 11. Insulating teeth; 12. Positioning column; 121. Wire groove; 13. Slot; 2. Insulating sheath; 21. Ring plate; 211. Positioning hole; 22. Cylinder; 221. Fixing column; 222. Notch; 223. Protrusion; 224. Hook; 10. Stator core; 20. Winding; 30. Casing; 40. End cover; 50. Fan blade. DETAILED DESCRIPTION

[0029] See also Figures 1 to 11 As shown, according to an embodiment of the present invention, a stator insulation frame is provided, comprising a frame body 1, the frame body 1 having an insulating tooth portion 11 corresponding to a winding 20 on a stator core 10 and a winding connection side away from the stator core 10, and also comprising an insulating sheath 2, the insulating sheath 2 being detachably connected to the winding connection side to cover the winding 20 on the side of the insulating sheath 2 facing the stator core 10. In this technical solution, the insulating sheath 2 is connected at the winding connection side, so that insulation isolation can be formed between the winding on the side of the insulating sheath 2 facing the stator core 10 and the end cover 40 on the side of the insulating sheath 2 away from the stator core 10, effectively preventing the lead wire of the winding 20 from contacting the end cover 40 to cause a short circuit of the motor, and there is no need to retain a large electrical safety distance between the winding 20 and the end cover 40 as in the prior art, thereby effectively reducing the axial space inside the motor, thereby reducing the volume of the motor.

[0030] The insulating sheath 2 and the skeleton body 1 can both be made of non-metallic insulating materials, such as PA (Polyamide), PBT (Polybutylene Terephthalate) and other non-metallic materials, which have good insulating properties and mechanical properties.

[0031] In some embodiments, the insulating sheath 2 is connected to the skeleton body 1 by snapping, for example, the insulating sheath 2 has a plurality of hooks 224, and a plurality of slots 13 are constructed at corresponding positions of the skeleton body 1, such as on the side of the winding connection side, and the plurality of hooks 224 are respectively connected to the plurality of slots 13 in a one-to-one correspondence, thereby realizing convenient assembly between the insulating sheath 2 and the skeleton body 1. Specifically, the lower end face of the hook 224 (i.e., the end face facing the winding connection side) forms an acute angle with the plane of the winding connection side, so that when the insulating sheath is pressed down for assembly, the insulating sheath 2 can slide into the slot 13 on the skeleton body 1, thereby protecting the hook 224 and the insulating sheath; the upper end face of the hook 224 is horizontal or inwardly concave, so that the insulating sheath 2 can firmly buckle the slot 13 on the skeleton body 1, thereby fixing the insulating sheath 2 and preventing the insulating sheath from slipping off along the axial direction.

[0032] In some embodiments, the winding connection side of the skeleton body 1 has a plurality of positioning columns 12, and the positioning columns 12 are arranged to protrude from the winding connection side along the axial direction of the stator core 10. The positioning columns 12 are provided with wiring grooves 121 on the radially outer side of the stator core 10, and the lead wires of the winding 20 can run in the wiring grooves 121. In this technical solution, the positioning columns 12 can fix the routing path of the lead wires, so that the routing layout of the lead wires is more reasonable and regular. The wiring grooves 121 extend around the circumference of the stator core 10, and a plurality of wiring grooves 121 are formed in the height direction of the positioning columns 12, so that the lead wires of the coils of different phases can run independently in different wiring grooves 121.

[0033] As a specific structural type of the insulating sheath 2, the insulating sheath 2 has an annular plate body 21 and a cylinder body 22 at the edge of the annular plate body 21. It can be understood that the annular plate body 21 will be located between the winding 20 and the end cover 40 to meet the insulation requirements between the winding 20 and the end cover 40. When the insulating sheath 2 is connected to the skeleton body 1, the cylinder body 22 is sleeved on the radial outer side of the positioning column 12 to prevent the lead wire (also called bridge wire) in the wiring groove 121 from falling out.

[0034] In some embodiments, the inner side of the cylinder 22 has a plurality of fixing columns 221, and the plurality of fixing columns 221 are respectively arranged corresponding to the plurality of positioning columns 12 to prevent the lead wires from coming out of the wiring groove 121, thereby preventing the lead wires from contacting the stator core 10 or the end cover 40 and causing a short circuit accident. In some embodiments, the end of the fixing column 221 facing the stator core 10 is an arc surface to avoid scratching the winding 20 when the insulating sheath 2 is connected to the skeleton body 1. The main cross-section of the fixing column 221 can be circular, trapezoidal, conical, etc., and the present invention does not specifically limit it.

[0035] In some embodiments, a plurality of positioning holes 211 are constructed on the annular plate body 21. When the insulating sheath 2 is connected to the skeleton body 1, the free ends of the plurality of positioning columns 12 are respectively inserted into the plurality of positioning holes 211 one by one. The positioning holes 211 can be rectangular, arc-shaped, etc. The positioning holes 211 are nested with the ends of the positioning columns 12 to position the insulating sheath 2 and prevent the insulating sheath 2 from rotating in a circular direction.

[0036] In some embodiments, a plurality of notches 222 are constructed on the end surface of the cylinder 22 facing the stator core 10, and the shape of the notches 222 can be rectangular, trapezoidal, etc., which can release the tension caused by the hook 224 expanding radially outward due to extrusion when the insulating sheath is pressed down, thereby protecting the hook 224 from damage and protecting the insulating sheath 2 from rupture; and / or, a plurality of protrusions 223 are provided on the outer circumferential surface of the cylinder 2, and the protrusions 223 can be cylindrical, trapezoidal, rectangular, etc. During assembly, the outer circumferential side of the insulating sheath 2 can be interference fit with the inner wall of the end cover 40 through the protrusions 223, thereby fixing the insulating sheath 2.

[0037] It can be understood that the center of the annular plate body 21 is the through hole of the rotor, which can be circular or elliptical, and the aperture of the through hole should be no larger than the inner diameter of the winding 20, and no smaller than the aperture of the center hole of the rotor core, so that the insulating sheath 2 can axially isolate the winding 20 and the end cover 40 to play an insulating role, and at the same time enable the motor rotor to pass smoothly through the center hole and the through hole to prevent interference, thereby playing the role of avoiding the motor rotor.

[0038] According to an embodiment of the present invention, there is also provided a motor stator, comprising the above-mentioned stator insulation frame.

[0039] According to an embodiment of the present invention, a motor is further provided, comprising the above-mentioned motor stator. It can be understood that the motor comprises a casing 30, and the end cover 40 is a part of the casing 30 and is detachably connected to the through hole opening of the casing 30. The motor stator can be connected to the end cover 40 by interference fit.

[0040] According to an embodiment of the present invention, there is also provided an air conditioner, in particular, an air conditioner with fresh air and environmental control integrated, comprising the above-mentioned motor for driving the fan blades 50 in the air conditioner.

[0041] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A stator insulation frame, characterized in that: The invention comprises a skeleton body (1), the skeleton body (1) having an insulating tooth portion (11) corresponding to a winding (20) on a stator core (10) and a winding connection side facing away from the stator core (10), and also comprising an insulating sheath (2), the insulating sheath (2) being detachably connected to the winding connection side so as to cover the winding (20) on the side of the insulating sheath (2) facing the stator core (10); the winding connection side of the skeleton body (1) having a plurality of positioning posts (12), the positioning posts (12) being arranged protruding from the winding connection side along the axial direction of the stator core (10), the positioning posts (12) being located at the stator core (10) and the stator core (10). A wiring groove (121) is provided on the radially outer side of the core (10), and the lead wire of the winding (20) can run in the wiring groove (121); the insulating sheath (2) has an annular plate body (21) and a cylinder body (22) located at the edge of the annular plate body (21), and when the insulating sheath (2) is connected to the skeleton body (1), the cylinder body (22) is sleeved on the radially outer side of the positioning column (12); the inner side of the cylinder body (22) has a plurality of fixing columns (221), and the plurality of fixing columns (221) are respectively arranged corresponding to the plurality of positioning columns (12) to prevent the lead wire from escaping from the wiring groove (121).

2. The stator insulation frame according to claim 1, characterized in that: The insulating sheath (2) is snap-connected to the skeleton body (1).

3. The stator insulation frame according to claim 1, characterized in that: The end of the fixing column (221) facing the stator core (10) is an arc surface.

4. The stator insulation frame according to claim 1, characterized in that: A plurality of positioning holes (211) are formed on the annular plate body (21); when the insulating sheath (2) is connected to the skeleton body (1), the free ends of the plurality of positioning posts (12) are inserted into the plurality of positioning holes (211) in a one-to-one correspondence.

5. The stator insulation frame according to claim 1, characterized in that: A plurality of notches (222) are formed on the end surface of the cylinder (22) facing the stator core (10); and / or a plurality of protrusions (223) are provided on the outer circumferential surface of the cylinder (22).

6. A motor stator, characterized in that: The invention comprises the stator insulation frame according to any one of claims 1 to 5.

7. A motor, characterized in that: The motor stator comprises the motor stator as claimed in claim 6.

8. An air conditioner, characterized in that: Includes the motor as claimed in claim 7.

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