Rotor lamination, rotor, electric machine, compressor and refrigeration appliance

Abstract

The utility model provides a kind of rotor punching sheet, rotor, motor, compressor and refrigeration equipment.The rotor punching sheet includes body, first magnet slot, second magnet slot and gap;First magnet slot is set to body, the number of first magnet slot is multiple, multiple first magnet slot is arranged along the circumference of body;Second magnet slot is set to body, between the adjacent two first magnet slots in multiple first magnet slots;Gap is set to the edge of second magnet slot close to the side of body, one end of gap is communicated with second magnet slot, the other end of gap extends to the edge of body.Gap is set to body, located at the edge of second magnet slot close to the side of body, one end of gap is communicated with second magnet slot, the other end of gap extends to the edge of body, reduce the path of magnetic flux leakage to the outside of rotor through body, reduce the magnetic flux leakage of motor, improve the output torque of motor, and then improve the power of motor, so that the refrigeration equipment with motor has stronger refrigeration capacity.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a rotor lamination, a rotor, a motor, a compressor, and a refrigeration device. Background Technology

[0002] Currently, in related technologies, refrigeration equipment is equipped with a compressor, which provides refrigerant for the normal operation of the refrigeration equipment. Therefore, the compressor's power affects the refrigeration capacity of the equipment. As the requirements for the cooling capacity of refrigeration equipment become increasingly stringent, how to increase the compressor's power is a technical problem that needs to be solved. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes a rotor lamination.

[0005] The second aspect of this utility model provides a rotor.

[0006] The third aspect of this utility model proposes an electric motor.

[0007] The fourth aspect of this utility model provides a compressor.

[0008] The fifth aspect of this utility model provides a refrigeration device.

[0009] In view of the above, the first aspect of the present invention provides a rotor lamination, including a body, a first magnet slot, a second magnet slot, and a notch; the first magnet slot is disposed on the body, and there are multiple first magnet slots arranged circumferentially along the body; the second magnet slot is disposed on the body and located between two adjacent first magnet slots among the multiple first magnet slots; the notch is disposed on the side of the second magnet slot near the edge of the body, one end of the notch is connected to the second magnet slot, and the other end of the notch extends to the edge of the body.

[0010] The rotor lamination provided by this utility model includes a body, a first magnet slot, and a second magnet slot. The first magnet slot is disposed on the body and is used to install a first magnet, thereby achieving the installation and positioning of the first magnet. The second magnet slot is disposed on the body and is used to install a second magnet, thereby achieving the installation and positioning of the second magnet. There are multiple first magnet slots arranged circumferentially along the body. The second magnet slot is located between two adjacent first magnet slots. The first magnet disposed in the first magnet slot and the second magnet disposed in the second magnet slot cooperate to form magnetic poles, enabling the rotor including the rotor lamination to cooperate with the stator to achieve power output. The rotor lamination also includes a notch, which is located on the body and on the side of the second magnet slot near the edge of the body. One end of the notch is connected to the second magnet slot, and the other end of the notch extends to the edge of the body, so that the second magnet slot is in an open state at the edge of the body. This reduces the path of magnetic flux leakage from the body to the outside of the rotor, reduces the leakage flux of the motor, increases the output torque of the motor, and thus increases the power of the motor, making the refrigeration equipment with the motor have a stronger cooling capacity.

[0011] Furthermore, by setting a notch on the radially outer side of the second magnet slot, the motor power can be increased without increasing the motor size, thereby reducing the impact on the internal space of the refrigeration equipment to increase the motor power, which is conducive to the miniaturization and weight reduction of the motor and the refrigeration equipment.

[0012] By setting a notch on the radially outer side of the second magnet slot, it is possible to reduce motor leakage flux, increase the main magnetic flux of the motor, further improve the output torque of the motor, and thus improve the power of the motor.

[0013] Specifically, the first magnet slot extends tangentially along the body, and the first magnet in two adjacent first magnet slots and the second magnet disposed between the two first magnets form the magnetic poles of the motor, thereby enhancing the magnetizing ability of the first and second magnets and improving the magnet utilization rate.

[0014] Specifically, the notch is located on the radial outer side of the second magnet slot, and the notch penetrates the area of ​​the body on the radial outer side of the second magnet slot.

[0015] Optionally, the body includes a yoke located outside the first magnet slot.

[0016] The main body is provided with a rotor hole for inserting a rotating shaft, and the rotor hole is located in the middle of the main body.

[0017] In some technical solutions of this utility model, optionally, the rotor lamination includes a magnetic isolation groove, which is disposed in the area enclosed by two adjacent first magnet grooves and second magnet grooves, and communicates with the second magnet groove.

[0018] In this technical solution, the rotor lamination includes a magnetic isolation slot, which is disposed within the area enclosed by two adjacent first magnet slots and second magnet slots, i.e., the magnetic isolation slot is located radially inside the second magnet slot. Because the magnetic isolation slot is located radially inside the second magnet slot, it reduces the path of inward magnetic leakage from the second magnet located within the second magnet slot, thereby reducing inward magnetic leakage, improving the utilization rate of the second magnet, and further increasing the motor's output torque and power. Alternatively, the magnetic isolation slot is disposed within the area enclosed by two adjacent first magnet slots and second magnet slot, i.e., between the ends of two adjacent first magnet slots in a plurality of first magnet slots. This reduces the path of outward magnetic leakage from the ends of the first magnet slots, thereby reducing magnetic leakage, improving the utilization rate of the first magnet, and further increasing the motor's output torque and power. The magnetic isolation groove is connected to the second magnet groove, which can more effectively reduce the leakage magnetic path of the second magnet, further reduce the leakage magnetic field of the second magnet to the inside, thereby increasing the output torque of the motor and increasing the power of the motor.

[0019] In some technical solutions of this utility model, optionally, the width of the magnetic shielding groove decreases from the side closer to the edge of the body to the side farther away from the edge of the body in the radial direction.

[0020] In this technical solution, the width of the magnetic shielding groove decreases from the side closest to the edge of the body to the side furthest from the edge of the body in the radial direction. This reduces the influence of the magnetic shielding groove on the location of the first magnet groove, increases the effective area of ​​the first magnet groove, and improves the utilization rate of space on the body.

[0021] Specifically, in the radial direction of the body, the width of the magnetic isolation groove decreases from the side near the edge of the body to the side away from the edge of the body. The extension direction of the magnetic isolation groove near the edge of the first magnet groove is similar to the extension direction of the first magnet groove near the end of the magnetic isolation groove, thereby making fuller use of the space between two adjacent first magnet grooves.

[0022] Specifically, the magnetic shielding groove is triangular in shape.

[0023] In some technical solutions of this utility model, the rotor lamination may optionally include a support portion, which is disposed in the magnetic isolation groove and protrudes into the inner wall of the magnetic isolation groove.

[0024] In this technical solution, the support portion is disposed within the magnetic isolation groove and protrudes into the inner wall of the groove. This support portion thus supports the second magnet disposed within the second magnet groove, improving the stability of the second magnet within the groove. Furthermore, supporting the second magnet within the groove also reduces inward magnetic leakage from the second magnet, further increasing the motor's output torque and power.

[0025] Optionally, the support and the body are an integral structure, which can be cut and formed in one step by stamping process.

[0026] Optionally, in some technical solutions of this utility model, the support part is triangular and located on the side of the magnetic isolation groove near the second magnet groove.

[0027] In this technical solution, the support part is triangular and located on the side of the magnetic isolation groove close to the second magnet groove. While supporting the second magnet, it reduces the space occupied by the support part in the magnetic isolation groove, thereby reducing the path of magnetic flux leakage from the second magnet to the inside, further reducing the magnetic leakage from the second magnet to the inside, further improving the output torque of the motor, and improving the power of the motor.

[0028] Specifically, the support portion is a right-angled triangle, with one right-angled edge of the support portion fitting against the second magnet disposed within the second magnet slot, thereby supporting the second magnet. One oblique edge of the support portion is disposed along the inner wall of the magnetic isolation slot and connected to the inner wall of the magnetic isolation slot. The right-angled portion of the support portion has rounded corners.

[0029] The support can also be in the form of an equilateral triangle or an irregular triangle.

[0030] In some technical solutions of this utility model, optionally, one end of the support is connected to the inner wall of the magnetic isolation groove on the side away from the second magnet groove, and the other end of the support extends toward the second magnet groove.

[0031] In this technical solution, one end of the support is connected to the inner wall of the magnetic isolation groove on the side away from the second magnet groove, and the other end of the support extends into the second magnet groove. While supporting the second magnet, the support reduces the space occupied by the magnetic isolation groove, thereby reducing the path of magnetic flux leakage from the second magnet to the inside, further reducing the magnetic leakage from the second magnet to the inside, further improving the output torque of the motor, and improving the power of the motor.

[0032] Specifically, the magnetic shielding groove is triangular, one end of the support is connected to the apex of the magnetic shielding groove near the center of the main body, and the other end of the support is in contact with the second magnet set in the second magnet groove, thereby achieving support for the second magnet.

[0033] Specifically, the support section is rectangular.

[0034] Specifically, one end of the support is connected to the inner wall of the magnetic isolation groove on the side away from the second magnet groove, and the other end of the support extends into the second magnet groove, thus supporting the second magnet.

[0035] The support part is triangular and located on the side of the magnetic isolation groove near the second magnet groove, which can also support the second magnet.

[0036] The magnetic shielding groove can simultaneously support the second magnet through a triangular support part and a support part extending from the inner wall of the magnetic shielding groove away from the second magnet groove toward the second magnet groove, thereby further improving the stability of the support for the second magnet.

[0037] In some technical solutions of this utility model, optionally, the width of the magnetic isolation groove is smaller than the width of the second magnet groove.

[0038] In this technical solution, the width of the magnetic isolation groove is smaller than the width of the second magnet groove. The second magnet is supported by the part of the magnetic isolation groove that protrudes from the inner wall of the second magnet groove, which reduces the path of magnetic flux leakage from the second magnet to the inside, further reduces the magnetic leakage from the second magnet to the inside, increases the output torque of the motor, and increases the power of the motor.

[0039] Specifically, the width of the side of the magnetic shielding groove closest to the second magnet groove is smaller than the width of the second magnet groove, thereby forming a flat-bottomed support platform on the inner side of the second magnet groove, which supports and positions the second magnet.

[0040] In some technical solutions of this utility model, the rotor lamination may optionally include a magnetic shielding part, which is disposed between the magnetic shielding groove and the first magnet groove and extends radially inclined relative to the body along the end of the first magnet groove.

[0041] In this technical solution, a magnetic shielding part is disposed between the magnetic shielding groove and the first magnet groove, extending radially inclined relative to the body along the end of the first magnet groove, thereby separating the first magnet groove and the magnetic shielding groove and improving the stability of the first magnet within the first magnet groove. Furthermore, by providing the magnetic shielding part, the portion of the body outside the first magnet groove and the portion of the body inside the first magnet groove are connected as a whole. This improves the overall strength of the rotor laminations while allowing the rotor laminations to be cut in one step through a stamping process, reducing the manufacturing difficulty of the rotor laminations and improving their manufacturing efficiency.

[0042] Optionally, the width of the magnetic shielding part should be kept to a minimum while meeting the manufacturing process requirements, so as to further improve the output torque of the motor.

[0043] In some technical solutions of this utility model, optionally, the width of the notch is smaller than the width of the second magnet groove.

[0044] In this technical solution, the width of the notch is smaller than the width of the second magnet slot, so that the notch can limit the second magnet set in the second magnet slot, thereby improving the stability of the rotor during motor operation.

[0045] Optionally, the width of the notch needs to meet mechanical strength and process requirements.

[0046] The second aspect of this utility model provides a rotor, including rotor laminations as described in any of the above technical solutions, a first magnet and a second magnet, wherein the first magnet is disposed in a first magnet slot and the second magnet is disposed in a second magnet slot.

[0047] Since the rotor includes rotor laminations as described in any of the above technical solutions, the rotor possesses all the beneficial effects of rotor laminations as described in any of the above technical solutions, which will not be elaborated here.

[0048] Optionally, the number of rotor laminations is multiple, and the multiple rotor laminations are stacked.

[0049] Optionally, the first magnet is ferrite, and the second magnet is a rare earth magnet, such as a neodymium iron boron magnet.

[0050] Optionally, the width of the second magnet matches the width of the second magnet slot, and the height of the second magnet matches the height of the second magnet slot.

[0051] The third aspect of this utility model provides an electric motor, including rotor laminations as described in any of the above technical solutions; or a rotor as described in any of the above technical solutions.

[0052] Since the motor includes rotor laminations or rotors as described in any of the above technical solutions, the motor possesses all the beneficial effects of rotor laminations or rotors as described in any of the above technical solutions, which will not be elaborated here.

[0053] The fourth aspect of this utility model provides a compressor, including rotor laminations as described in any of the above technical solutions; or a rotor as described in any of the above technical solutions.

[0054] Since the compressor includes rotor laminations or rotors as described in any of the above technical solutions, the compressor possesses all the beneficial effects of rotor laminations or rotors as described in any of the above technical solutions, which will not be elaborated here.

[0055] The fourth aspect of this utility model provides a refrigeration device, including a motor as described in any of the above technical solutions; or a compressor as described in any of the above technical solutions.

[0056] Since the refrigeration equipment includes a motor or compressor as described in any of the above technical solutions, the refrigeration equipment possesses all the beneficial effects of the motor or compressor as described in any of the above technical solutions, which will not be elaborated here.

[0057] Specifically, refrigeration equipment includes air conditioners, refrigerators, freezers, wine cabinets, or display cases.

[0058] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0059] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the structural schematic diagrams of a rotor according to an embodiment of the present invention; Figure 2 This is one of the structural schematic diagrams of a rotor lamination according to an embodiment of the present invention; Figure 3 This is one of the partial structural schematic diagrams of a rotor according to an embodiment of the present invention; Figure 4 This is a second schematic diagram of the rotor according to an embodiment of the present invention; Figure 5 This is a partial structural schematic diagram of a rotor lamination according to an embodiment of the present invention; Figure 6 This is the third schematic diagram of the rotor according to an embodiment of the present invention; Figure 7 This is a second schematic diagram of the rotor lamination structure according to an embodiment of the present invention; Figure 8 This is a second partial structural schematic diagram of a rotor according to an embodiment of the present invention; Figure 9 This is the fourth schematic diagram of the rotor according to an embodiment of the present invention; Figure 10 This is the third schematic diagram of the rotor lamination structure according to an embodiment of the present invention; Figure 11 This is a third partial structural schematic diagram of a rotor according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of a second magnet according to an embodiment of the present invention.

[0060] in, Figures 1 to 12 The correspondence between the reference numerals and component names in the attached drawings is as follows: 10 Rotor laminations, 100 Body, 110 Edge of the body, 120 Yoke, 210 First magnet slot, 220 Second magnet slot, 300 Notch, 400 Magnetic isolation slot, 500 Support, 600 Magnetic isolation, 700 Rotor hole, 20 First magnet, 30 Second magnet. Detailed Implementation

[0061] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0062] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0063] The following reference Figures 1 to 12 This invention describes rotor laminations 10, rotors, motors, compressors, and refrigeration equipment according to some embodiments of the present invention.

[0064] In one embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, a rotor lamination 10 is provided, including a body 100, a first magnet slot 210, a second magnet slot 220, and a notch 300; the first magnet slot 210 is disposed on the body 100, and there are multiple first magnet slots 210, which are arranged along the circumference of the body 100. Figure 1 Arranged in the direction indicated by the middle arrow A; the second magnet slot 220 is disposed on the body 100, located between two adjacent first magnet slots 210 among a plurality of first magnet slots 210; the notch 300 is disposed on the side of the second magnet slot 220 near the edge 110 of the body 100, one end of the notch 300 is connected to the second magnet slot 220, and the other end of the notch 300 extends to the edge 110 of the body 100.

[0065] In this embodiment, the rotor lamination 10 includes a body 100, a first magnet slot 210, and a second magnet slot 220. The first magnet slot 210 is disposed on the body 100 and is used to install a first magnet 20, thereby achieving the installation and positioning of the first magnet 20. The second magnet slot 220 is disposed on the body 100 and is used to install a second magnet 30, thereby achieving the installation and positioning of the second magnet 30. There are multiple first magnet slots 210, which are arranged circumferentially along the body 100. The second magnet slot 220 is located between two adjacent first magnet slots 210. The first magnet 20 disposed in the first magnet slot 210 and the second magnet 30 disposed in the second magnet slot 220 cooperate to form magnetic poles, enabling the rotor including the rotor lamination 10 to cooperate with the stator to achieve power output. The rotor lamination 10 also includes a notch 300, which is disposed on the body 100 and located on the side of the second magnet slot 220 near the edge 110 of the body 100. One end of the notch 300 is connected to the second magnet slot 220, and the other end of the notch 300 extends to the edge 110 of the body 100, so that the second magnet slot 220 is in an open state at the edge 110 of the body 100, reducing the path of magnetic flux leakage from the body 100 to the outside of the rotor, reducing the leakage flux of the motor, increasing the output torque of the motor, and thus increasing the power of the motor, so that the refrigeration equipment with the motor has a stronger refrigeration capacity.

[0066] And through the radial direction of the second magnet slot 220 ( Figure 1 A notch of 300mm is provided on the outer side (in the direction indicated by arrow B). This increases the motor's power without increasing its size, thereby reducing the impact on the internal space of the refrigeration equipment caused by increasing the motor's power. This is beneficial for the miniaturization and weight reduction of both the motor and the refrigeration equipment.

[0067] By setting a notch 300 on the radially outer side of the second magnet slot 220, it is possible to reduce motor leakage flux, increase the main magnetic flux of the motor, further improve the output torque of the motor, and thus improve the power of the motor.

[0068] Specifically, the first magnet slot 210 extends tangentially along the body 100, and the first magnet 20 in two adjacent first magnet slots 210 and the second magnet 30 disposed between the two first magnets 20 form the magnetic poles of the motor, thereby enhancing the magnetizing ability of the first magnet 20 and the second magnet 30 and improving the magnet utilization rate.

[0069] Specifically, the notch 300 is provided on the radial outer side of the second magnet groove 220, and the notch 300 penetrates the area of ​​the body 100 on the radial outer side of the second magnet groove 220.

[0070] Optionally, the body 100 includes a yoke 120 located outside the first magnet slot 210.

[0071] The main body 100 is provided with a rotor hole 700, which is used to pass through the rotating shaft. The rotor hole 700 is located in the middle of the main body 100.

[0072] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0073] like Figure 1 , Figure 2 and Figure 3 As shown, the rotor lamination 10 includes a magnetic isolation groove 400, which is disposed in the area enclosed by two adjacent first magnet grooves 210 and second magnet grooves 220, and is connected to the second magnet groove 220.

[0074] In this embodiment, the rotor lamination 10 includes a magnetic isolation groove 400, which is disposed in the area enclosed by two adjacent first magnet grooves 210 and second magnet grooves 220, that is, the magnetic isolation groove 400 is disposed radially inside the second magnet groove 220. Since the magnetic isolation groove 400 is disposed radially inside the second magnet groove 220, the magnetic isolation groove 400 can reduce the path of magnetic leakage of the second magnet 30 disposed in the second magnet groove 220 to the inward side, thereby reducing the magnetic leakage of the second magnet 30 to the inward side, improving the utilization rate of the second magnet 30, further improving the output torque of the motor, and improving the power of the motor. The magnetic isolation groove 400 is disposed within the area enclosed by two adjacent magnet grooves and the second magnet groove 220. Specifically, the magnetic isolation groove 400 is disposed between the ends of two adjacent first magnet grooves 210. The magnetic isolation groove 400 reduces the path of magnetic leakage from the end of the first magnet 20 to the outside of the first magnet groove 210, thereby reducing the magnetic leakage of the first magnet 20, improving the utilization rate of the first magnet 20, and further increasing the output torque and power of the motor. The magnetic isolation groove 400 is connected to the second magnet groove 220, which can more effectively reduce the magnetic leakage path of the second magnet 30, further reducing the inward magnetic leakage of the second magnet 30, thereby increasing the output torque and power of the motor.

[0075] like Figure 4 As shown, the rotor lamination 10 may also be without the magnetic isolation groove 400.

[0076] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0077] like Figure 1 , Figure 2 and Figure 5As shown, in the radial direction of the body 100, the width D3 of the magnetic isolation groove 400 decreases from the side near the edge 110 of the body 100 to the side away from the edge 110 of the body 100.

[0078] In this embodiment, in the radial direction of the body 100, the width D3 of the magnetic isolation groove 400 decreases from the side near the edge 110 of the body 100 to the side away from the edge 110 of the body 100, thereby reducing the influence of the magnetic isolation groove 400 on the location of the first magnet groove 210, increasing the effective area of ​​the first magnet groove 210, and improving the utilization rate of space on the body 100.

[0079] Specifically, in the radial direction of the body 100, the width D3 of the magnetic isolation groove 400 decreases from the side near the edge 110 of the body 100 to the side away from the edge 110 of the body 100. The extension direction of the magnetic isolation groove 400 near the edge of the first magnet groove 210 is close to the extension direction of the end of the first magnet groove 210 near the magnetic isolation groove 400, thereby making fuller use of the space between two adjacent first magnet grooves 210.

[0080] Specifically, the magnetic shielding groove 400 is triangular in shape.

[0081] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0082] like Figure 1 , Figure 2 and Figure 3 As shown, the rotor lamination 10 also includes a support portion 500, which is disposed in the magnetic isolation groove 400 and protrudes into the inner wall of the magnetic isolation groove 400.

[0083] In this embodiment, the support portion 500 is disposed within the magnetic isolation groove 400 and protrudes into the inner wall of the magnetic isolation groove 400. The support portion 500 thus supports the second magnet 30 disposed within the second magnet groove 220, improving the stability of the second magnet 30 within the second magnet groove 220. Furthermore, by supporting the second magnet 30 within the second magnet groove 220, the support portion 500 also reduces inward magnetic leakage of the second magnet 30, further increasing the output torque of the motor and thus increasing the motor's power.

[0084] Optionally, the support 500 and the body 100 are an integral structure, which can be cut and formed in one step by stamping process.

[0085] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0086] like Figure 1 , Figure 2 and Figure 3 As shown, the support part 500 is triangular and is located on the side of the magnetic isolation groove 400 near the second magnet groove 220.

[0087] In this embodiment, the support portion 500 is triangular and located on the side of the magnetic isolation groove 400 near the second magnet groove 220. While supporting the second magnet 30, it reduces the space occupied by the support portion 500 in the magnetic isolation groove 400, thereby reducing the path of magnetic flux leakage from the second magnet 30 to the inside, further reducing the magnetic leakage from the second magnet 30 to the inside, further improving the output torque of the motor, and improving the power of the motor.

[0088] Specifically, the support portion 500 is a right-angled triangle, and one right-angled edge of the support portion 500 is in contact with the second magnet 30 disposed in the second magnet groove 220, thereby supporting the second magnet 30. One oblique edge of the support portion 500 is disposed along the inner wall of the magnetic isolation groove 400 and is connected to the inner wall of the magnetic isolation groove 400. The right angle of the support portion 500 has a rounded corner.

[0089] The support part 500 can also be an equilateral triangle or an irregular triangle.

[0090] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0091] like Figure 6 , Figure 7 and Figure 8 As shown, one end of the support portion 500 is connected to the inner wall of the magnetic isolation groove 400 on the side away from the second magnet groove 220, and the other end of the support portion 500 extends toward the second magnet groove 220.

[0092] In this embodiment, one end of the support portion 500 is connected to the inner wall of the magnetic isolation groove 400 on the side away from the second magnet groove 220, and the other end of the support portion 500 extends into the second magnet groove 220. While supporting the second magnet 30, the support portion 500 reduces the space occupied by the magnetic isolation groove 400, thereby reducing the path of magnetic flux leakage from the second magnet 30 to the inside, further reducing the magnetic leakage from the second magnet 30 to the inside, further improving the output torque of the motor, and improving the power of the motor.

[0093] Specifically, the magnetic shielding groove 400 is triangular, one end of the support part 500 is connected to the apex of the magnetic shielding groove 400 near the center of the body 100, and the other end of the support part 500 is in contact with the second magnet 30 disposed in the second magnet groove 220, thereby achieving support for the second magnet 30.

[0094] Specifically, the support part 500 is rectangular.

[0095] Specifically, one end of the support part 500 is connected to the inner wall of the magnetic isolation groove 400 on the side away from the second magnet groove 220, and the other end of the support part 500 extends into the second magnet groove 220, thereby supporting the second magnet 30.

[0096] The support part 500 is triangular and located on the side of the magnetic isolation groove 400 near the second magnet groove 220, which can also support the second magnet 30.

[0097] The magnetic shielding groove 400 can simultaneously support the second magnet 30 through a triangular support portion 500 and a support portion 500 extending from the inner wall of the magnetic shielding groove 400 away from the second magnet groove 220 toward the second magnet groove 220, thereby further improving the stability of the support for the second magnet 30.

[0098] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0099] like Figure 5 , Figure 9 , Figure 10 and Figure 11 As shown, the width D3 of the magnetic isolation groove 400 is smaller than the width D4 of the second magnet groove 220.

[0100] In this embodiment, the width D3 of the magnetic isolation groove 400 is smaller than the width D4 of the second magnet groove 220. Thus, the portion of the magnetic isolation groove 400 protruding from the inner wall of the second magnet groove 220 supports the second magnet 30, reducing the path of magnetic flux leakage from the second magnet 30 to the inward side, further reducing the magnetic leakage from the second magnet 30 to the inward side, increasing the output torque of the motor, and increasing the power of the motor.

[0101] Specifically, the width of the magnetic isolation groove 400 on the side near the second magnet groove 220 is smaller than the width D4 of the second magnet groove 220, thereby forming a flat-bottomed support platform on the inner side of the second magnet groove 220, which supports and positions the second magnet 30.

[0102] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0103] like Figure 1 , Figure 2 and Figure 3 As shown, the rotor lamination 10 also includes a magnetic isolation part 600, which is disposed between the magnetic isolation groove 400 and the first magnet groove 210, and extends radially inclined relative to the body 100 along the end of the first magnet groove 210.

[0104] In this embodiment, the magnetic shielding part 600 is disposed between the magnetic shielding groove 400 and the first magnet groove 210, extending radially inclined relative to the body 100 along the end of the first magnet groove 210, thereby spacing the first magnet groove 210 and the magnetic shielding groove 400 and improving the stability of the first magnet 20 within the first magnet groove 210. Furthermore, by providing the magnetic shielding part 600, the portion of the body 100 outside the first magnet groove 210 and the portion of the body 100 inside the first magnet groove 210 are connected as a whole. This improves the overall strength of the rotor lamination 10 while allowing the rotor lamination 10 to be cut in one step through a stamping process, reducing the manufacturing difficulty of the rotor lamination 10 and improving its manufacturing efficiency.

[0105] Optionally, the width D1 of the magnetic shielding part 600 should be kept to a minimum while meeting the manufacturing process requirements, so as to further improve the output torque of the motor.

[0106] This embodiment provides a rotor lamination 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0107] like Figure 5 As shown, the width D2 of the notch 300 is smaller than the width D4 of the second magnet slot 220.

[0108] In this embodiment, the width D2 of the notch 300 is smaller than the width D4 of the second magnet slot 220, so that the notch 300 can limit the second magnet 30 disposed in the second magnet slot 220, thereby improving the stability of the rotor during motor operation.

[0109] Optionally, the width D2 of the notch 300 needs to meet mechanical strength and process requirements.

[0110] In one embodiment of this utility model, such as Figure 1 , Figure 6 and Figure 9 As shown, a rotor is provided, including rotor laminations 10 as in any of the above embodiments, a first magnet 20 and a second magnet 30, wherein the first magnet 20 is disposed in a first magnet slot 210 and the second magnet 30 is disposed in a second magnet slot 220.

[0111] Since the rotor includes rotor laminations 10 as described in any of the above embodiments, the rotor has all the beneficial effects of rotor laminations 10 as described in any of the above embodiments, which will not be elaborated here.

[0112] Optionally, there may be multiple rotor laminations 10, and multiple rotor laminations 10 may be stacked.

[0113] Optionally, the first magnet 20 is ferrite, and the second magnet 30 is a rare earth magnet, such as a neodymium iron boron magnet.

[0114] Optionally, such as Figure 1 , Figure 2 , Figure 3 and Figure 12 As shown, the length L1 of the second magnet 30 matches the width D4 of the second magnet slot 220, and the width W1 of the second magnet 30 matches the height of the second magnet slot 220.

[0115] In one embodiment of the present invention, an electric motor is provided, including rotor laminations 10 as described in any of the above embodiments; or a rotor as described in any of the above embodiments.

[0116] Since the motor includes rotor laminations 10 or rotor as described in any of the above embodiments, the motor has all the beneficial effects of rotor laminations 10 or rotor as described in any of the above embodiments, which will not be described in detail here.

[0117] In one embodiment of the present invention, a compressor is provided, including rotor laminations 10 as described in any of the above embodiments; or a rotor as described in any of the above embodiments.

[0118] Since the compressor includes rotor laminations 10 or rotor as described in any of the above embodiments, the compressor has all the beneficial effects of rotor laminations 10 or rotor as described in any of the above embodiments, which will not be elaborated here.

[0119] In one embodiment of the present invention, a refrigeration device is provided, including a motor as described in any of the above embodiments; or a compressor as described in any of the above embodiments.

[0120] Since the refrigeration equipment includes a motor or compressor as described in any of the above embodiments, the refrigeration equipment has all the beneficial effects of the motor or compressor as described in any of the above embodiments, which will not be elaborated here.

[0121] Specifically, refrigeration equipment includes air conditioners, refrigerators, freezers, wine cabinets, or display cases.

[0122] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0123] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0124] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotor lamination, characterized in that, include: ontology; The first magnet slot is disposed on the body, and there are multiple first magnet slots arranged along the circumference of the body. The second magnet slot is disposed on the body and located between two adjacent first magnet slots among a plurality of first magnet slots; A notch is provided on the side of the second magnet slot near the edge of the body, one end of the notch is connected to the second magnet slot, and the other end of the notch extends to the edge of the body.

2. The rotor lamination according to claim 1, characterized in that, Also includes: The magnetic isolation groove is disposed in the area enclosed by two adjacent first magnet grooves and second magnet grooves, and is connected to the second magnet groove.

3. The rotor lamination according to claim 2, characterized in that, In the radial direction of the body, the width of the magnetic shielding groove decreases from the side closer to the edge of the body to the side farther away from the edge of the body.

4. The rotor lamination according to claim 2, characterized in that, Also includes: A support portion is disposed within the magnetic shielding groove and protrudes into the inner wall of the magnetic shielding groove.

5. The rotor lamination according to claim 4, characterized in that, The support portion is triangular and located on the side of the magnetic shielding groove closest to the second magnet groove.

6. The rotor lamination according to claim 4, characterized in that, One end of the support is connected to the inner wall of the magnetic isolation groove on the side away from the second magnet groove, and the other end of the support extends toward the second magnet groove.

7. The rotor lamination according to claim 2, characterized in that, The width of the magnetic shielding groove is smaller than the width of the second magnet groove.

8. The rotor lamination according to claim 2, characterized in that, Also includes: A magnetic shielding part is disposed between the magnetic shielding groove and the first magnet groove, and extends radially inclined relative to the body along the end of the first magnet groove.

9. The rotor lamination according to any one of claims 1 to 8, characterized in that, The width of the notch is smaller than the width of the second magnet slot.

10. A rotor, characterized in that, include: Rotor laminations as described in any one of claims 1 to 9; A first magnet, wherein the first magnet is disposed within a first magnet slot; The second magnet is disposed within the second magnet slot.

11. An electric motor, characterized in that, include: Rotor laminations as described in any one of claims 1 to 9; or The rotor as described in claim 10.

12. A compressor, characterized in that, include: Rotor laminations as described in any one of claims 1 to 9; or The rotor as described in claim 10.

13. A refrigeration device, characterized in that, include: The motor as described in claim 11; or The compressor as described in claim 12.

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