Stator structure and compressor motor

Abstract

The utility model discloses a stator structure and a compressor motor. The stator structure comprises an annular part and a plurality of stator tooth parts which extend from the annular part and surround the annular part. A stator slot is arranged between any two adjacent stator tooth parts, and the plurality of stator slots are defined as a plurality of first stator slots, a plurality of second stator slots and a plurality of third stator slots. The area of the first stator slots is smaller than that of the second stator slots, and the area of the second stator slots is smaller than that of the third stator slots. The plurality of stator slots have a common total area, the plurality of first stator slots have a first total area, the plurality of second stator slots have a second total area, the plurality of third stator slots have a third total area, the first total area is 11%-21% of the common total area, the second total area is 14%-24% of the common total area, and the third total area is 16%-26% of the common total area.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of stator, in particular to a kind of stator structure and compressor motor. BACKGROUND

[0002] In existing motor design, single-phase induction motor of two-pole winding is widely applied in compressor due to reliable structure and excellent performance. However, current development trend is towards high energy efficiency design to save energy, and existing stator with traditional slot type design cannot meet the requirement of high energy efficiency.

[0003] Furthermore, slot type in existing stator is mostly using the structure of two kinds of slot type, so that the wire diameter and the number of turns of motor winding design is limited by slot size constraint, and cannot be properly distributed, so that performance and noise cannot be well optimized, thereby affecting the service life of equipment.

[0004] Therefore, the inventor believes that the above defects can be improved, and after careful research and application of scientific principles, finally proposes the utility model with reasonable design and effective improvement of the above defects. SUMMARY

[0005] Therefore, the utility model aims to provide a kind of stator structure and compressor motor, which can effectively improve the defects that may be generated by existing stator.

[0006] To achieve the above purpose, the utility model embodiment discloses a kind of stator structure, which includes: a ring part;And multiple stator tooth parts, from the ring part and around the inner side of the ring part, between adjacent any two stator tooth parts, a stator slot is formed, and multiple stator slots define multiple first stator slots, multiple second stator slots and multiple third stator slots;Wherein, the area of the first stator slot is less than the area of the second stator slot, the area of the second stator slot is less than the area of the third stator slot;Wherein, multiple stator slots have a common total area, multiple first stator slots have a first total area, multiple second stator slots have a second total area, multiple third stator slots have a third total area, the first total area is 11%~21% of the common total area, the second total area is 14%~24% of the common total area, and the third total area is 16%~26% of the common total area.

[0007] Preferably, the stator structure defines an axis, and the stator tooth part includes a head end;Wherein, the head end of multiple stator tooth parts is arranged on the inner side of the ring part in a radial manner facing the axis.

[0008] Preferably, the number of the second stator slots is less than the number of the first stator slots, and the number of the second stator slots is also less than the number of the third stator slots.

[0009] Preferably, the stator structure defines a first axis in a radial direction and a second axis perpendicular to the first axis, the stator structure can be divided into blocks by the first axis and the second axis, and any two adjacent blocks are mirror-symmetric.

[0010] Preferably, each block contains at least one first stator slot, at least one second stator slot and at least one third stator slot, and the total number of at least one first stator slot, at least one second stator slot and at least one third stator slot in each block is not less than 5.

[0011] Preferably, the third stator slot in each block is arranged between the first stator slot and the second stator slot, and the first stator slot is not adjacent to the second stator slot.

[0012] Preferably, the second stator slot and the third stator slot in each block are arranged between two first stator slots, and the second stator slot is adjacent to one of the first stator slots and one of the third stator slots.

[0013] Preferably, any one of the first stator slots has a first depth in the radial direction, any one of the second stator slots has a second depth in the radial direction, and any one of the third stator slots has a third depth in the radial direction; wherein the first depth is less than the second depth, and the second depth is less than the third depth.

[0014] According to another aspect of the present application, a compressor motor is also provided, which comprises:

[0015] A rotor; a stator structure disposed around the rotor, the stator structure comprising: an annular portion; and a plurality of stator tooth portions extending from and encircling an inner side of the annular portion, each two adjacent stator tooth portions forming a stator slot therebetween, and the plurality of stator slots defining a plurality of first stator slots, a plurality of second stator slots, and a plurality of third stator slots; wherein the first stator slots have an area smaller than the second stator slots, and the second stator slots have an area smaller than the third stator slots; wherein the plurality of stator slots have a common total area, the plurality of first stator slots have a first total area, the plurality of second stator slots have a second total area, and the plurality of third stator slots have a third total area, the first total area being 11% to 21% of the common total area, the second total area being 14% to 24% of the common total area, and the third total area being 16% to 26% of the common total area.

[0016] Preferably, the stator structure defines a first axis in a radial direction and a second axis perpendicular to the first axis, the stator structure can be divided into a plurality of blocks by the first axis and the second axis, and each two adjacent blocks are mirror-symmetric.

[0017] Through the above structure, it can be known that the stator structure and the compressor motor disclosed in the embodiment of the present application can improve the stability of the current magnetic field and the magnetic field strength in the stator structure through the setting of the first total area being 11% to 21% of the common total area, the second total area being 14% to 24% of the common total area, and the third total area being 16% to 26% of the common total area.

[0018] For further understanding of the features and technical contents of the present application, please refer to the following detailed description and drawings of the present application, but these descriptions and drawings are only used to illustrate the present application, and do not make any limitation on the protection scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The schematic view of the rotor of the embodiment one of the present application.

[0020] Figure 2 The schematic view of the stator structure of the embodiment one of the present application.

[0021] Figure 3 The partial enlarged schematic view of the embodiment one of the present application. Figure 2

[0022] Figure 4 The schematic view of the stator structure of the embodiment two of the present application. ​

[0023] Figure 5 For the partial enlarged view of the utility model Figure 4

[0024] Symbol explanation:

[0025] Detailed description

[0026] In order to understand the features, contents and advantages of the utility model and the effects that can be achieved, the utility model is described in detail below in the form of examples with the drawings. The drawings used are only for illustration and auxiliary description, and are not necessarily the actual proportions and accurate configurations after the implementation of the utility model. Therefore, the proportions and configuration relationships of the drawings should not be used to interpret or limit the scope of the utility model in actual implementation.

[0027] The advantages, features and technical methods of the utility model can be more easily understood by referring to the exemplary embodiments and the attached drawings, and the utility model can be implemented in different forms. Therefore, it should not be understood as being limited to the embodiments described herein. On the contrary, the embodiments provided make the disclosure more thorough and comprehensive and fully convey the scope of the utility model. The utility model is only defined by the attached claims.

[0028] [Example 1]

[0029] Please refer to Figures 1 to 3 , which is example 1 of the utility model. This embodiment discloses a compressor motor 100, which includes a rotor 1, a stator structure 2 arranged around the rotor 1, a plurality of windings (not shown) arranged around the rotor 1 and the stator structure 2, and a housing 3 covering the stator structure 2. That is, the rotor 1 is arranged inside the stator structure 2, and the rotor 1 and the stator structure 2 can each be provided with a plurality of windings, so that the magnetic field changes when the current flows through the plurality of windings. Accordingly, the rotor 1 can rotate in the stator structure 2 by changing the current magnetic field.

[0030] It should be noted that the stator structure 2 is described in this embodiment in combination with the compressor motor 100 and the rotor 1, but the utility model is not limited thereto. For example, in other embodiments not shown in the utility model, the stator structure 2 can be used alone (e.g., sold) or in combination with other components (i.e., the stator structure 2 can be applied to other devices other than the compressor motor 100).

[0031] Please refer to Figure 2 ​As shown, the stator structure 2 comprises a ring portion 21 and a plurality of stator tooth portions 22 extending from and surrounding inside of the ring portion 21. The stator structure 2 defines an axis A, and the stator tooth portions 22 comprise a head end 221, and the head ends 221 of the stator tooth portions 22 are arranged radially on the inside of the ring portion 21.

[0032] In other words, the stator tooth portions 22 extend from the inside of the ring portion 21 with the head ends 221 towards the axis A, and the distance between the head end 221 of each stator tooth portion 22 and the axis A in a radial direction R is equal. Accordingly, the head ends 221 can collectively surround a cylindrical space on the inside of the ring portion 21, and the cylindrical space can be used to accommodate the rotor 1. In addition, the head ends 221 of any two adjacent stator tooth portions 22 have an opening P (as shown in Figure 3 ).

[0033] Then, any two adjacent stator tooth portions 22 form a stator slot (for example, 222, 223, 224 in Figure 2 ), and a plurality of stator slots define a plurality of first stator slots 222, a plurality of second stator slots 223, and a plurality of third stator slots 224. That is, the first stator slots 222, the second stator slots 223 and the third stator slots 224 are concave on the inside of the ring portion 21, and any two adjacent stator slots are separated by a stator tooth portion 22.

[0034] The area of the first stator slot 222 is smaller than the area of the second stator slot 223, and the area of the second stator slot 223 is smaller than the area of the third stator slot 224; and the first stator slot 222, the second stator slot 223 and the third stator slot 224 are roughly in the shape of a water droplet surrounding the inside of the ring portion 21, but the present application is not limited thereto. For example, in other embodiments not shown in the present application, the shapes of the first stator slot 222, the second stator slot 223 and the third stator slot 224 can also be rectangular or elliptical.

[0035] Please refer to Figure 3As shown, in the present embodiment, each of the first stator slots 222 has a first depth D1 along the radial direction R, each of the second stator slots 223 has a second depth D2 along the radial direction R, and each of the third stator slots 224 has a third depth D3 along the radial direction R. Herein, the first depth D1 is less than the second depth D2, and the second depth D2 is less than the third depth D3.

[0036] In detail, each of the first stator slots 222 defines the first depth D1 from the corresponding opening P towards the direction approaching the bottom of the first stator slot 222; each of the second stator slots 223 defines the second depth D2 from the corresponding opening P towards the direction approaching the bottom of the second stator slot 223; and each of the third stator slots 224 defines the third depth D3 from the corresponding opening P towards the direction approaching the bottom of the third stator slot 224.

[0037] That is, the first stator slots 222, the second stator slots 223 and the third stator slots 224 have substantially the same slot width, and the first stator slots 222, the second stator slots 223 and the third stator slots 224 have different areas due to the different depths D1, D2 and D3.

[0038] More specifically, the first stator slots 222, the second stator slots 223 and the third stator slots 224 have different depths along the radial direction R to change the area relationship of the first stator slots 222, the second stator slots 223 and the third stator slots 224.

[0039] It is worth mentioning that the plurality of stator slots has a common total area, the plurality of first stator slots 222 has a first total area, the plurality of second stator slots 223 has a second total area, and the plurality of third stator slots 224 has a third total area. Herein, the first total area is 11% to 21% of the common total area, the second total area is 14% to 24% of the common total area, and the third total area is 16% to 26% of the common total area.

[0040] Further, based on the area of the first stator slot 222 being the smallest, it can be used to carry a small amount of the winding to stabilize the current magnetic field and reduce magnetic field interference when current passes through the winding; the area of the second stator slot 223 is between the first stator slot 222 and the third stator slot 224, which can be used to carry an appropriate amount of the winding to balance the current magnetic field and the overall structure; the area of the third stator slot 224 is the largest, which can be used to carry the most winding, and by concentrating most of the winding, it can further enhance the strength of the current magnetic field to improve the efficiency of the compressor motor 100.

[0041] It is worth mentioning that the stator structure 2 is defined with a first axis X and a second axis Y perpendicular to the first axis X on the cross section along the radial direction R, the stator structure 2 can be divided into multiple blocks by the first axis X and the second axis Y, and any two adjacent blocks are mirror symmetric.

[0042] Specifically, the stator structure 2 is evenly divided into four blocks by the first axis X and the second axis Y, and each block has the same number of first stator slots 222, second stator slots 223 and third stator slots 224, and left-right symmetric and up-down symmetric arrangement order.

[0043] For example, the positions of multiple blocks in Figure 2 are defined as upper left, upper right, lower left and lower right respectively; wherein the stator slots in the two blocks located at the upper left and lower left can be arranged left-right symmetrically along the first axis X with the stator slots in the two blocks located at the upper right and lower right. Similarly, the stator slots in the two blocks located at the upper left and upper right can be arranged up-down symmetrically along the second axis Y with the stator slots in the two blocks located at the lower left and lower right.

[0044] Accordingly, the stator structure 2 can help to balance the distribution of the current magnetic field, reduce electromagnetic fluctuations of the compressor motor 100 in operation, and have more uniform quality distribution in structure by arranging the first stator slot 222, the second stator slot 223 and the third stator slot 224 in up-down and left-right symmetric structure, and can reduce the vibration amplitude and noise of the compressor motor 100 in operation.

[0045] In practical applications, the number and arrangement order of the first stator slots 222, the second stator slots 223 and the third stator slots 224 of the stator structure 2 are calculated by the sine distribution law. The number of the second stator slots 223 is less than the number of the first stator slots 222, and the number of the second stator slots 223 is also less than the number of the third stator slots 224.

[0046] In this embodiment, as shown in Figure 2 , Figure 3 each block contains at least one first stator slot 222, at least one second stator slot 223 and at least one third stator slot 224, and the total number of at least one first stator slot 222, at least one second stator slot 223 and at least one third stator slot 224 in each block is not less than 5.

[0047] It is worth mentioning that the third stator slot 224 in each block is arranged between the first stator slot 222 and the second stator slot 223, and the first stator slot 222 is not adjacent to the second stator slot 223, but the present application is not limited thereto; for example, in other embodiments not shown in the present application, the first stator slot 222, the second stator slot 223 and the third stator slot 224 can also have other arrangements.

[0048] In this embodiment, as shown in Figure 2 the total number of stator slots is twenty; wherein in each block, the number of first stator slots 222 is two, the number of second stator slots 223 is one, and the number of third stator slots is two.

[0049] Then, in each block, two first stator slots 222 are arranged adjacent to each other, two third stator slots 224 are arranged adjacent to each other, and two adjacent first stator slots 222 are arranged on one side of two adjacent third stator slots 224, and the second stator slot 223 is arranged on the other side of the third stator slot 224 which is not adjacent to the first stator slot 222.

[0050] Accordingly, the arrangement order and number relationship of the first stator slots 222, the second stator slots 223 and the third stator slots 224 calculated by the sine distribution law can make the current magnetic field distribution established by the winding in the stator structure 2 close to a sine waveform when the compressor motor 100 is running, thereby improving the efficiency of the compressor motor 100 and reducing the noise generated during vibration.

[0051]

Embodiment Two

[0052] Please refer to Figure 4 、 Figure 5 The embodiment two of the utility model is shown in the figure, which is similar to the above-mentioned embodiment one, so the same parts of the two embodiments are not described again, and the differences of the embodiment compared with the above-mentioned embodiment one are described as follows:

[0053] As Figure 4 、 Figure 5 In the embodiment, the second stator slot 223 and the third stator slot 224 in each block are arranged between two first stator slots 222, and the second stator slot 223 is adjacent to one of the first stator slots 222 and one of the third stator slots 224.

[0054] Specifically, the total number of the stator slots is twenty-four; wherein in each block, the number of the first stator slots 222 is three, the number of the second stator slots 223 is one, and the number of the third stator slots is two.

[0055] Then, in each block, two first stator slots 222 are arranged adjacent to each other, two third stator slots 224 are arranged adjacent to each other, one side of the two third stator slots is provided with two adjacent first stator slots 222, and the other side is provided with one second stator slot 223, and the other first stator slot 222 is arranged on the other side of the second stator slot 223 which is not adjacent to the third stator slot 224.

[0056]

Technical effects of the utility model embodiment

[0057] In summary, the stator structure and the compressor motor disclosed in the embodiment of the utility model can improve the stability of the current magnetic field and the magnetic field strength in the stator structure through the settings of "the first total area is 11%~21% of the common total area, the second total area is 14%~24% of the common total area, and the third total area is 16%~26% of the common total area".

[0058] The above disclosed content is only the preferred feasible embodiment of the utility model, and is not limited to the patent range of the utility model, so any equivalent technical changes made by applying the utility model specification and drawing are included in the patent range of the utility model.

Claims

1. A stator structure, characterized in that, include: A ring-shaped part; and Multiple stator teeth extend from the annular portion and surround the inner side of the annular portion. A stator slot is formed between any two adjacent stator teeth, and the multiple stator slots define multiple first stator slots, multiple second stator slots, and multiple third stator slots; wherein the area of ​​the first stator slot is smaller than the area of ​​the second stator slot, and the area of ​​the second stator slot is smaller than the area of ​​the third stator slot. The stator slots have a common total area, the first stator slots have a first total area, the second stator slots have a second total area, and the third stator slots have a third total area. The first total area is 11% to 21% of the common total area, the second total area is 14% to 24% of the common total area, and the third total area is 16% to 26% of the common total area.

2. The stator structure as described in claim 1, characterized in that, The stator structure defines an axis, and the stator teeth include a head end; wherein the head ends of the plurality of stator teeth are arranged radially toward the axis on the inner side of the annular portion.

3. The stator structure as described in claim 1, characterized in that, The number of the plurality of second stator slots is less than the number of the plurality of first stator slots, and the number of the plurality of second stator slots is also less than the number of the plurality of third stator slots.

4. The stator structure as described in claim 1, characterized in that, The stator structure is defined by a first axis along a radial direction and a second axis perpendicular to the first axis. The stator structure can be divided into multiple blocks by the first axis and the second axis, and any two adjacent blocks are mirror-symmetric.

5. The stator structure as described in claim 4, characterized in that, Each of the blocks contains at least one first stator slot, at least one second stator slot, and at least one third stator slot, and the total number of at least one first stator slot, at least one second stator slot, and at least one third stator slot in each block is not less than 5.

6. The stator structure as described in claim 4, characterized in that, The third stator slot in each block is disposed between the first stator slot and the second stator slot, and the first stator slot is not adjacent to the second stator slot.

7. The stator structure as described in claim 4, characterized in that, The second stator slot and the third stator slot in each block are disposed between two first stator slots, and the second stator slot is adjacent to one of the first stator slots and one of the third stator slots.

8. The stator structure as described in claim 4, characterized in that, Each of the first stator slots has a first depth along the radial direction, each of the second stator slots has a second depth along the radial direction, and each of the third stator slots has a third depth along the radial direction; wherein the first depth is less than the second depth, and the second depth is less than the third depth.

9. A compressor motor, characterized in that, include: One rotor; A stator structure, disposed around the rotor, the stator structure comprising: A ring-shaped part; and Multiple stator teeth extend from the annular portion and surround the inner side of the annular portion. A stator slot is formed between any two adjacent stator teeth, and the multiple stator slots define multiple first stator slots, multiple second stator slots, and multiple third stator slots; wherein the area of ​​the first stator slot is smaller than the area of ​​the second stator slot, and the area of ​​the second stator slot is smaller than the area of ​​the third stator slot. The stator slots have a common total area, the first stator slots have a first total area, the second stator slots have a second total area, and the third stator slots have a third total area. The first total area is 11% to 21% of the common total area, the second total area is 14% to 24% of the common total area, and the third total area is 16% to 26% of the common total area.

10. The compressor motor as described in claim 9, characterized in that... The stator structure is defined by a first axis along a radial direction and a second axis perpendicular to the first axis. The stator structure can be divided into multiple blocks by the first axis and the second axis, and any two adjacent blocks are mirror-symmetric.

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