TWM608049U - Rotor structure of compressor motor - Google Patents

Abstract

A rotor structure of a compressor motor includes: an iron core with a top surface, a bottom surface and a side surface, the top surface and the bottom surface are opposite to each other, the side surface connects the bottom surface and the top surface, and the side surface has a predetermined shape ; And a magnet is sleeved on the side of the iron core in the axial direction, the magnet has a top ring surface, a bottom ring surface, an inner ring surface and an outer ring surface, the top ring surface and the bottom ring The inner ring surface and the outer ring surface are connected to the top ring surface and the bottom ring surface, and the inner ring surface has a predetermined shape; by providing both the inner ring surface of the magnet and the side surface of the iron core It is a predetermined shape to increase the resistance (friction force) between the magnet and the iron core, so that the glue between the two is hardened and fixed to make the rotor stronger and avoid the phenomenon of the magnet flying off or sliding.

Description

Rotor structure of compressor motor

The present invention relates to the technical field of compressors, and specifically relates to a rotor of a compressor motor.

At present, the existing permanent magnet motors are called surface-mounted permanent magnet motors. That is to say, the iron core in the rotor of this permanent magnet motor and the magnets sheathed around the iron core are made of adhesive. Fixedly combined with each other.

This kind of rotor assembled by adhesive bonding, when the iron core and the magnet can be aligned in the axial direction, the adhesive between the two is hardened and fixed. In addition, in the use of most of the permanent magnet motor micro compressors, due to the high temperature and high pressure in the internal environment, coupled with the influence of the refrigerant and refrigerating machine oil, the adhesive between the iron core and the magnet is often deteriorated and also It is the decrease in viscosity. In the process of high-speed rotation, it may even cause the phenomenon of fly-off or slippage between the iron core and the magnet, which greatly reduces the reliability of the compressor or damages the compressor. This is a major drawback and needs to be improved. .

Therefore, the object of the present invention is to provide a way to increase the resistance between the magnet and the iron core, so that the glue between the two is hardened and fixed, so that the rotor is stronger and avoids the phenomenon of the magnet from flying off or sliding.

In order to achieve the purpose of the foregoing disclosure, the present invention proposes a rotor structure of a compressor motor, which includes:

An iron core having a top surface, a bottom surface and a side surface, the top surface and the bottom surface are opposite to each other, the side surface connects the bottom surface and the top surface, and the side surface has a predetermined shape; and

A magnet is sleeved on the side surface of the iron core in the axial direction. The magnet has a top ring surface, a bottom ring surface, an inner ring surface and an outer ring surface. The top ring surface and the bottom ring surface are mutually In contrast, the inner ring surface and the outer ring surface are connected to the top ring surface and the bottom ring surface, and the inner ring surface has a predetermined shape.

Preferably, the predetermined shape presented by the side surface of the iron core is a polygonal shape, which is a closed shape surrounded by a plurality of straight line segments; the predetermined shape presented by the inner ring surface of the magnet is a polygonal shape, which is composed of a plurality of straight line segments. The enclosed shape enclosed by it.

Preferably, the number of poles of the rotor is N, and the number of cut edges of the iron core is C. If N≠0, C/N>0 is satisfied, and the cut edges are straight segments.

Preferably, the predetermined shape exhibited by the side surface of the iron core is an irregular shape, a closed shape surrounded by more than one straight line segment and more than one arc segment; the predetermined shape exhibited by the inner ring surface of the magnet It is an irregular shape, a closed shape enclosed by more than one straight line segment and more than one arc segment.

Preferably, the number of poles of the rotor is N, and the number of cut edges of the iron core is C. If N≠0, C/N>0 is satisfied, and the cut edges are straight segments.

Preferably, the predetermined shape presented by the side surface of the iron core is a non-circular shape, a closed shape surrounded by more than one first arc segment and more than one second arc segment; the inner ring of the magnet The predetermined shape presented by the surface is a non-circular shape, and is a closed shape surrounded by more than one first arc segment and more than one second arc segment.

Preferably, the number of poles of the rotor is N, the number of cut edges of the iron core is C, if N≠0, then C/N>0 is satisfied, and the cut edges are the first arc segment.

Preferably, the iron core is formed by stacking a plurality of silicon steel sheets.

Preferably, the iron core is represented by either a single cylindrical block or a cylindrical iron core.

Preferably, the iron core is formed with a shaft hole and a plurality of through holes.

Compared with the prior art, the effect of the present invention is that the magnet is sleeved on the side surface of the iron core in the axial direction. Because the magnet and the iron core are changed in structure, the cutting/punching shape is simple and easy to process. Both the inner ring surface of the magnet and the side surface of the iron core are set to a predetermined shape to increase the resistance (friction force) between the magnet and the iron core, so that the magnet can be firmly fixed on the iron core and avoid The occurrence of the magnet flying off or sliding phenomenon greatly improves the reliability of the rotor, and can improve the stress concentration of the original process, and increase the amount of magnets to improve performance; thereby providing a way to increase the resistance between the magnet and the iron core. The viscose between the two is hardened and fixed, so that the overall structure of the rotor is stronger, and the phenomenon of magnets flying off or sliding is avoided.

This creation:

1: Rotor

10: Central axis

11: iron core

111: top surface

112: Bottom

113: side

114: Shaft hole

115: through hole

12: Magnet

121: top ring surface

122: bottom ring surface

123: inner ring surface

124: Outer Ring

A1, A1': arc segment

A2, L2': the first arc segment

A3, L3': the second arc segment

L1, L1': straight line segment

L2, L2': straight line segment

Figure 1 is a side view of the new rotor.

Figure 2 is a top view of the first embodiment of the rotor in Figure 1 of the new model.

Figure 3 is a top view of the second embodiment of the rotor in Figure 1 of the new model.

Figure 4 is a top view of another structure of the second embodiment of the rotor in Figure 1 of the new model.

Figure 5 is a top view of the third embodiment of the rotor in Figure 1 of the new model.

Figure 6 is a top view of another structure of the third embodiment of the rotor in Figure 1 of the new model.

In order to understand the features, content and advantages of the present invention and its achievable effects, the present invention is combined with the drawings and described in detail in the form of embodiments as follows. The drawings used therein are merely illustrative. And the auxiliary manual is not necessarily the true ratio and precise configuration after the implementation of the new model. Therefore, the ratio and configuration relationship of the attached drawings should not be interpreted to limit the scope of rights of the new model in actual implementation.

The advantages, features and technical methods of the present invention will be described in more detail with reference to the exemplary embodiments and the accompanying drawings to make it easier to understand, and the present invention may be realized in different forms, so it should not be understood that it is only limited to The embodiments stated here, on the contrary, for those with ordinary knowledge in the technical field, the provided embodiments will make this disclosure more thorough, comprehensive and complete to convey the scope of the present invention, and the new type will only be appended As defined by the scope of patent applications.

[First embodiment]

Please refer to Figures 1 and 2. Figure 1 is a side view of the rotor of the new type, and Figure 2 is a top view of the first embodiment of the rotor of Figure 1 of the new type.

The rotor 1 of the present invention is applied to a compressor. The rotor 1 includes an iron core 11 and a magnet 12, and when the motor is running, the iron core 11 and the magnet 12 constituting the rotor 1 will rotate simultaneously in an integral form. The iron core 11 is formed by extending an appropriate length along a central axis 10. The iron core 11 has a top surface 111, a bottom surface 112, and a side surface 113. The top surface 111 and the bottom surface 112 are opposite to each other, and the side surface 113 is connected to the The bottom surface 112, the top surface 111, and the side surface 113 have a predetermined shape, so that the iron core 11 as a whole has a predetermined shape structure. The magnet 12 is formed by extending an appropriate length along the central axis 10 and is sleeved on the side surface 113 of the iron core 11 in the axial direction. The magnet 12 has a top ring surface 121 and a bottom ring Surface 122, an inner ring surface 123, and an outer ring surface 124, the top ring surface 121 and the bottom ring surface 122 are opposite to each other, the inner ring surface 123 and the outer ring surface 124 are connected to the top ring surface 121 and the bottom ring surface The ring surface 122, the inner ring surface 123 has a predetermined shape, so that the magnet 12 as a whole has a predetermined shape structure.

In this example, the predetermined shape presented by the side surface 113 of the iron core 11 is a polygonal shape, and the polygonal shape is represented by a closed shape surrounded by a plurality of straight line segments L1; The predetermined shape is a polygonal shape, and the polygonal shape is represented by a closed shape surrounded by a plurality of straight line segments L1'; wherein, the number of poles of the rotor 1 is N, and the number of cut edges of the iron core 11 is C, if N≠ 0, the condition of C/N>0 is satisfied, and the cut edge is the straight line segment L1; for example, a 10-pole rotor is made into a decagon, a 6-pole rotor is made into a hexagon, and the inner part of the magnet 12 The ring surface 123 is made according to the side surface 113 of the iron core 11, and the shapes of the iron core 11 and the magnet 12 are changed by cutting. With this design, the resistance between the iron core 11 and the magnet 12 can be greatly increased. Long-term operation is not easy to cause the magnet 12 to slip or fly off, which greatly improves the reliability of the rotor 1 and can improve the stress concentration of the original process; in addition, the amount of magnets can also be increased according to the type of the magnet 12. Improve back EMF to achieve better performance.

In addition, the iron core 11 is composed of a plurality of silicon steel sheets stacked; or, the iron core 11 is represented by a single cylindrical block or a cylindrical iron core; no matter what structure the iron core 11 is made of. It appears that the iron core 11 is formed with a shaft hole 114 and a plurality of through holes 115, and the through holes 115 surround the shaft hole 114; therefore, the position, size, and shape of the through holes 115 of the iron core 11 are not limited. , It can be designed according to the actual application to improve the oil circulation rate of the compressor.

[Second embodiment]

Please refer to Figures 3 and 4. Figure 3 is a top view of the second embodiment of the rotor in Figure 1 of the new type, and is a top view of another structure of the second embodiment of the rotor in Figure 1 of the new type. The main difference from the first embodiment is that the predetermined shape presented by the side surface 113 of the iron core 11 is an irregular shape, which is surrounded by more than one straight line segment L2 and more than one arc segment A1 The predetermined shape presented by the inner ring surface 123 of the magnet 12 is an irregular shape, and the irregular shape is enclosed by more than one straight line segment L2' and more than one arc segment A1' The shape is shown; where the number of poles of the rotor 1 is N, the number of cut edges of the iron core 11 is C, if N≠0, the condition of C/N>0 is satisfied, and the cut edge is a straight line segment L2. Therefore, in order to improve the rotor 1 to lift the iron The resistance between the core 11 and the magnet 12 prevents the magnet 12 from flying off or sliding. The iron core 11 and the magnet 12 are combined in an irregular shape, except that the iron core 11 in the first embodiment can be used. In addition to the polygon with the magnet 12, the iron core 11 and the magnet 12 can also be single-sided linear cutting/punching (as shown in FIG. 3) or bilateral linear cutting/punching (as shown in FIG. 4). The second embodiment is achieved by the configuration, and the cutting/punching outline is simple and easy to process, which can improve the stress concentration of the original manufacturing process.

In addition, the iron core 11 is composed of a plurality of silicon steel sheets stacked; or, the iron core 11 is represented by a single cylindrical block or a cylindrical iron core; no matter what structure the iron core 11 is made of. It appears that the iron core 11 is formed with a shaft hole 114 and a plurality of through holes 115, and the through holes 115 surround the shaft hole 114; therefore, the position, size, and shape of the through holes 115 of the iron core 11 are not restricted. , It can be designed according to the actual application to improve the oil circulation rate of the compressor.

[Third embodiment]

Please refer to Figures 5 and 6. Figure 5 is a top view of the third embodiment of the rotor in Figure 1 of the new model, and Figure 6 is a top view of another structure of the third embodiment of the rotor in Figure 1 of the new model . The main difference from the first and second embodiments is that the predetermined shape of the side surface 113 of the core 11 is a non-circular shape, and the non-circular shape consists of more than one first arc segment A2 and The closed shape enclosed by more than one second arc segment A3 is presented; the predetermined shape presented by the inner ring surface 123 of the magnet 12 is a non-circular shape, and the non-circular shape consists of more than one first arc The segment A2' and one or more second arc segments A3' form a closed shape; where the number of poles of the rotor 1 is N, and the number of cut edges of the iron core 11 is C, if N≠0, Then the condition of C/N>0 is satisfied, and the cutting edge is the first arc segment A2. Therefore, in order to improve the rotor 1 to increase the resistance between the iron core 11 and the magnet 12 to prevent the magnet 12 from flying off or sliding, the iron core 11 and the magnet 12 are combined in a non-circular shape, except The polygons of the iron core 11 and the magnet 12 in the first embodiment can be used, and the irregular shapes of the iron core 11 and the magnet 12 in the second embodiment can also be used. Single-sided arc cutting/punching (as shown in Figure 5) or bilateral arc cutting/punching (as shown in Figure 6) to achieve the third embodiment, and the cutting/punching shape is simple and easy to process, which can improve the original The phenomenon of process stress concentration.

In addition, the iron core 11 is composed of a plurality of silicon steel sheets stacked; or, the iron core 11 is a single cylinder No matter what kind of structure the iron core 11 is presented in, the iron core 11 is formed with a shaft hole 114 and a plurality of through holes 115, the through holes 115 It surrounds the shaft hole 114; therefore, the position, size, and shape of the through hole 115 of the iron core 11 are not limited, and can be designed according to actual applications to improve the oil circulation rate of the compressor.

It can be seen from the above structure that the beneficial effects of the present invention are as follows:

According to the invention, the magnet is sleeved on the side surface of the iron core in the axial direction. Because the magnet and the iron core are changed in structure, the inner ring surface of the magnet and the side surface of the iron core are both set to a predetermined shape to achieve Increase the resistance (frictional force) between the magnet and the iron core, so that the magnet can be firmly fixed on the iron core, avoid the phenomenon of the magnet flying off or sliding, greatly improve the reliability of the rotor, and Improve the stress concentration of the original process, and increase the amount of magnets to improve performance; thereby providing a way to increase the resistance between the magnet and the iron core, so that the glue between the two is hardened and fixed, so that the overall structure of the rotor is stronger. , To avoid the phenomenon of magnet flying off or sliding.

However, the above-mentioned are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all simple equivalent changes and modifications made in accordance with the patent scope of the present utility model and the contents of the patent specification shall remain It falls within the scope of this new patent.

1: Rotor

11: iron core

113: side

114: Shaft hole

115: through hole

12: Magnet

123: inner ring surface

124: Outer Ring

L1, L1': straight line segment

Claims (10)

A rotor structure of a compressor motor includes: an iron core with a top surface, a bottom surface and a side surface, the top surface and the bottom surface are opposite to each other, the side surface connects the bottom surface and the top surface, and the side surface has a predetermined shape ; And a magnet is sleeved on the side of the iron core in the axial direction, the magnet has a top ring surface, a bottom ring surface, an inner ring surface and an outer ring surface, the top ring surface and the bottom ring The surfaces are opposite to each other, the inner ring surface and the outer ring surface are connected to the top ring surface and the bottom ring surface, and the inner ring surface has a predetermined shape. The rotor structure of the compressor motor described in item 1 of the scope of patent application, wherein the predetermined shape presented by the side surface of the iron core is a polygonal shape, a closed shape surrounded by a plurality of straight line segments; the inner ring of the magnet The predetermined shape presented by the surface is a polygonal shape, a closed shape surrounded by a plurality of straight line segments. For example, the rotor structure of the compressor motor described in item 2 of the scope of patent application, wherein the number of poles of the rotor is N, and the number of cut edges of the iron core is C. If N≠0, then C/N>0 is satisfied. The cutting edge is a straight line segment. The rotor structure of the compressor motor described in the first item of the scope of patent application, wherein the predetermined shape presented by the side surface of the iron core is an irregular shape, which is surrounded by more than one straight line segment and more than one arc segment The closed shape of the magnet; the predetermined shape presented by the inner ring surface of the magnet is an irregular shape, a closed shape enclosed by more than one straight line segment and more than one arc segment. For example, the rotor structure of the compressor motor described in item 4 of the scope of patent application, wherein the number of poles of the rotor is N, and the number of cut edges of the iron core is C. If N≠0, then C/N>0 is satisfied. The cutting edge is a straight line segment. The rotor structure of the compressor motor described in the first item of the scope of patent application, wherein the predetermined shape of the side surface of the iron core is a non-circular shape, consisting of more than one first arc segment and more than one second arc segment A closed shape enclosed by arc segments; the predetermined shape presented by the inner ring surface of the magnet is a non-circular shape, enclosed by more than one first arc segment and more than one second arc segment shape. For example, the rotor structure of the compressor motor described in item 6 of the scope of patent application, wherein the number of poles of the rotor is N, and the number of cut edges of the iron core is C. If N≠0, then C/N>0 is satisfied. The cutting edge is the first arc segment. The rotor structure of the compressor motor described in item 1 of the scope of patent application, wherein the iron core is composed of a plurality of silicon steel sheets stacked. According to the rotor structure of the compressor motor described in the first item of the patent application, the iron core is represented by a single cylindrical block or a cylindrical iron core. In the rotor structure of the compressor motor described in item 1 of the scope of patent application, the iron core is formed with a shaft hole and a plurality of through holes.

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