Motor, compressor and refrigeration equipment

Abstract

The invention discloses a motor, a compressor and refrigeration equipment. The motor comprises a shell and a stator core. The stator core is arranged in the casing, a central hole is formed in the middle of the stator core, the stator core comprises a yoke part and a plurality of tooth parts distributed along the inner circumference of the yoke part, welding positions opposite to the tooth parts in the radial direction are arranged on the outer circumference of the yoke part, the welding positions are provided with first welding areas, and the first welding areas are provided with second welding areas. The first welding area is welded to the machine shell. Wherein the stator core is formed by stacking a plurality of stator punching sheets in the axial direction, and the central hole is used for installing the rotor. According to the technical scheme of the invention, the position of the stator core with better strength is welded to the casing, so that the stator core is prevented from being deformed, and the noise of the motor is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor, a compressor and a refrigeration device. Background Art

[0002] In an inner rotor motor, the stator is typically fixed to the housing, while the rotor rotates within the stator's center hole, generating power. However, during motor operation, the connection between the stator and housing is often weak, leading to deformation or even loosening, which can cause significant motor noise. Summary of the Invention

[0003] The main purpose of the present invention is to provide a motor that can prevent the stator core from being deformed by welding the stator core at a position with better strength to the housing, thereby reducing the noise of the motor.

[0004] To achieve the above-mentioned object, the motor proposed in the present invention includes:

[0005] chassis;

[0006] A stator core is provided in the housing, wherein a central hole is provided in the middle of the stator core, the stator core comprises a yoke and a plurality of teeth distributed along the inner circumference of the yoke, a welding position is provided on the outer circumference of the yoke and radially opposite to the teeth, the welding position is provided with a first welding area, and the first welding area is welded to the housing;

[0007] The stator core is formed by stacking a plurality of stator punching sheets in the axial direction, and the center hole is used for installing the rotor.

[0008] Optionally, the first welding area covers the corresponding welding position in the circumferential direction.

[0009] Optionally, the first welding area is in the shape of an elongated strip and extends along the axial direction of the stator core.

[0010] Optionally, the plurality of first welding areas are evenly distributed in the circumferential direction of the stator core.

[0011] Optionally, the yoke has a plurality of second welding areas distributed along the circumferential direction, the second welding areas are staggered with the first welding areas, and two adjacent stator punching sheets are welded via the second welding areas.

[0012] Optionally, the second welding area is provided with a welding groove recessed from the outer periphery of the yoke, and the welding groove is used for filling with solder.

[0013] Optionally, the second welding area is in the shape of an elongated strip and extends along the axial direction of the stator core, and any stator punching sheet is provided with at least one second welding area.

[0014] Optionally, the second welding area is provided at the welding position, and the first welding area and the second welding area correspond to different welding positions respectively.

[0015] Optionally, the plurality of first welding areas and the plurality of second welding areas are evenly and / or alternately distributed along the circumference of the yoke.

[0016] Optionally, two adjacent stator punching sheets are connected by adhesive, or two adjacent stator punching sheets are connected by a varnish dipping process.

[0017] Optionally, when two adjacent stator punching sheets are connected by adhesive, the adhesive is configured as epoxy resin and / or acrylic acid; when two adjacent stator punching sheets are connected by a varnishing process, the varnishing material is configured as water-based paint or oil-based paint.

[0018] Optionally, the outer diameter of the stator core is defined as D, and D satisfies: 80 mm ≤ D ≤ 160 mm.

[0019] Optionally, the motor further includes a plurality of coils, and the plurality of coils are wound in a one-to-one correspondence with the plurality of teeth.

[0020] Optionally, the stator core is provided with 12 teeth.

[0021] Optionally, the stator core is configured as an integral stator core.

[0022] The present invention also provides a compressor, comprising the motor as described above.

[0023] The present invention also provides a refrigeration device, which includes the compressor as described above.

[0024] The technical solution of the present invention is to set the first welding area at the welding position, which is located at the outer periphery radially opposite to the yoke and the tooth portion, and then use the first welding area to weld to the inner side of the casing, so that the stator core is fixedly connected to the casing. Since the strength of the position where the yoke is provided with the tooth portion is better than the strength of the position where the tooth portion is not provided, the welding position has a stronger deformation resistance with the outer periphery of the yoke as the connection force point. In this way, by welding the first welding area on the welding position to the casing, deformation of the stator core can be avoided during the process of welding the stator core to the casing, thereby ensuring that the motor can operate in a good and stable state, thereby effectively avoiding abnormal noise from the motor and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of an embodiment of a motor according to the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the structure of the stator core;

[0028] Figure 3 Schematic diagram of the structure of the stator core of another embodiment of the motor of the present invention;

[0029] Figure 4 This is a schematic structural diagram of a stator core of another embodiment of a motor according to the present invention;

[0030] Figure 5 Schematic diagram of the structure of a compressor according to an embodiment of the present invention.

[0031] Description of Figure Numbers:

[0032] Label name Label name 100 chassis 200 stator core 210 First welding area 220 Center hole 230 Tooth 240 Yoke 250 Welding slot 260 adhesive 270 paint 300 compressor casing 400 rotor

[0033] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The present invention provides a motor.

[0038] In the embodiment of the present invention, please refer to Figure 1 and Figure 2 , the motor includes:

[0039] Housing 100;

[0040] The stator core 200 is disposed in the housing 100. A central hole 220 is defined in the middle of the stator core 200. The stator core 200 includes a yoke 240 and a plurality of teeth 230 distributed along the inner circumference of the yoke 240. A welding position is defined on the outer circumference of the yoke 240, radially opposite to the teeth 230. The welding position has a first welding area 210, which is welded to the housing 100.

[0041] The stator core 200 is formed by stacking a plurality of stator punching sheets in the axial direction, and the center hole 220 is used for installing the rotor 400.

[0042] The technical solution of the present invention is to set the first welding area 210 at a welding position, and the welding position is located at the outer periphery radially opposite to the yoke 240 and the tooth portion 230. Then, the first welding area 210 is welded to the inner side of the casing 100, so that the stator core 200 is fixedly connected to the casing 100. Since the strength of the position where the yoke 240 is provided with the tooth portion 230 is better than the strength of the position where the tooth portion 240 is not provided, the welding position has a stronger deformation resistance with the outer periphery of the yoke 240 as the connection force point. In this way, by welding the first welding area 210 on the welding position to the casing 100, deformation of the stator core 200 can be avoided during the process of welding the stator core 200 to the casing 100, thereby ensuring that the motor can operate in a good and stable state, thereby effectively avoiding abnormal noise from the motor and improving the user experience.

[0043] In the prior art, stator punchings are usually connected by snap-fitting to form a stator core 200. The overall strength of the stator core is good. In order to facilitate the welding of the stator core 200 and the casing 100, there is no requirement for the welding position of the stator core 200 and the casing 100. As a result, the welding position of the stator core 200 and the casing 100 is usually not radially opposite to the tooth portion 230. In this way, during the assembly process of the motor, since there is no structural reinforcement effect of the tooth portion 230 on the welding position, the stator core 200 is easily deformed due to welding with the casing 100, resulting in abnormal noise during the operation of the motor, which reduces the user experience.

[0044] It should be noted that the housing 100 can be a housing 100 independently provided for the motor. By installing the stator core 200 and the rotor 400 in the housing 100, the motor is integrated into an independent component. At this time, the housing 100 only protects the components of the motor, and the motor can be installed in different devices more conveniently, thereby improving the applicability of the motor. Alternatively, the motor is used in specific equipment, such as a compressor, pump, or fan. At this time, the housing 100 is both a protective shell for the motor and a protective shell for the specific equipment, that is, the housing 100 of the motor and the housing 100 of the specific equipment are the same shell, thereby reducing the volume of the equipment and fully improving the integrity of the equipment. In this embodiment, please refer to Figure 5 The motor is installed on the compressor, the compressor includes a compressor shell 300, and the casing 100 is configured as the compressor shell 300. At this time, the first welding area 210 is welded to the inner wall of the compressor shell 300.

[0045] As for the formation of the stator core 200, the stator core 200 is formed by stacking a plurality of stator punchings. The gaps between the stator punchings can provide a certain degree of insulation, preventing the stator core 200 from overheating due to large induced currents during the operation of the motor. In addition, the gaps between the stator punchings increase the contact area between the stator core 200 and the outside world, thereby increasing the heat dissipation efficiency of the stator core 200. In addition, by dividing the stator core 200 into a plurality of stator punchings, the stator punchings are less difficult to form, and the number of stator punchings can be flexibly set, thereby flexibly producing stator cores 200 of various specifications, thereby improving the production efficiency of the stator core 200.

[0046] Further, in this embodiment, please refer to Figure 1 and Figure 2, the stator core 200 is configured as an integral stator core 200. It can be understood that any stator punching is continuous in the circumferential direction to form a whole. When a certain tooth portion 230 or yoke portion 240 is subjected to force, the stator punching as a whole provides support for the tooth portion 230 or yoke portion 240, thereby better ensuring the integrity of the stator core 200 and preventing the stator core 200 from being deformed during the process of being welded to the housing 100. Of course, in other embodiments, the stator core 200 can also be configured as a block core, each block is provided with a tooth portion 230, so that the coil can be more conveniently wound around the corresponding tooth portion 230, and then multiple blocks are assembled into the stator core 200, which improves the assembly convenience while increasing the full slot rate of the motor.

[0047] In one embodiment, please refer to Figure 1 and Figure 2 The first welding area 210 circumferentially covers the corresponding welding position. It can be understood that the welding position is provided on the outer periphery of the yoke 240, and the circumferential ends of the welding position are at the same radius as the circumferential sides of the corresponding tooth portion 230. In this way, the first welding area 210 circumferentially covers the corresponding welding position. It can be understood that the circumferential ends of the first welding area 210 are also at the same radius as the circumferential sides of the corresponding tooth portion 230. That is, the circumferential width of the first welding area 210 and the corresponding welding position is equal, thereby increasing the welding area between each first welding area 210 and the housing and improving the welding stability between the stator core 200 and the housing 100. In other embodiments, the circumferential length of the first welding area 210 can also be less than the circumferential length of the welding position, which is manifested as the first welding area 210 being spot welded.

[0048] Specifically, in this embodiment, please refer to Figure 1 and Figure 2The first welding area 210 is in the shape of an elongated strip and extends along the axial direction of the stator core 200. It should be noted that the stator core 200 is connected to the housing 100 by laser welding. After the stator core 200 is welded to the housing 100, the stator core 200 can be evenly connected to the housing 100 in the axial direction, preventing the stator core 200 from moving or deforming due to different forces at different positions in the axial direction, thereby ensuring the stability of the stator core 200 on the housing 100. In addition, during the process of welding the stator core 200 to the housing 100, the degree of deformation of the stator core 200 at various locations in the axial direction can be ensured to be uniform, thereby reducing the problem of prominent noise caused by deformation at a single location. The first welding area 210 may continuously penetrate the stator core 200 in the axial direction, or the first welding area 210 may be spaced apart into multiple sections on the same axis, with multiple first welding areas 210 distributed circumferentially around the stator core 200, so that at least one first welding area 210 is provided on the periphery of any stator punching. Of course, in other embodiments, the first welding area 210 may also be connected to the housing 100 by spot welding. At least, the first welding area 210 is distributed circumferentially around the stator core 200, and multiple first welding areas 210 are distributed along one axis of the stator core 200, so as to ensure the stability of the relative position between the stator core 200 and the housing 100, as well as the welding stability between the stator core 200 and the housing 100.

[0049] Further, in this embodiment, please continue to refer to Figure 1 and Figure 2 , multiple first welding areas 210 are evenly distributed around the stator core 200. In this way, the deformation of the stator core 200 due to welding in the circumferential direction can offset each other, or avoid a large deviation between the actual position of the stator core 200 welded to the housing 100 and the preset position, thereby reducing the problem of deformation of the stator core 200 due to welding. In addition, the connection strength between the stator core 200 and the housing 100 in the circumferential direction tends to be uniform, thereby preventing the stator core 200 from deforming or even loosening due to uneven circumferential force during the operation of the motor. Of course, in other embodiments, based on the distribution of the teeth 230, multiple first welding areas 210 are distributed in equal proportion to the teeth 230 in the circumferential direction, thereby ensuring that the connection between the stator core 200 and the housing 100 can better adapt to the operating conditions of the motor.

[0050] In one embodiment, please refer to Figure 1 and Figure 2The yoke 240 has a plurality of second welding areas distributed along the circumferential direction, and the second welding areas are staggered with the first welding area 210, and two adjacent stator punchings are welded through the second welding area. It can be understood that a plurality of stator punchings can be stably welded into the stator core 200 through the second welding area, which not only improves the damping effect between the stator punchings, but also improves the stiffness of the stator core 200. During the operation of the motor, the noise generated by the stator core 200 due to vibration can be reduced. At the same time, compared with the related art, in which the stator punchings are fastened by buckling points, the stator punchings are welded through the second welding area, which reduces the conduction capacity between the stator punchings, avoids the stator core 200 from generating interlayer eddy currents and causing large heat losses, thereby improving the efficiency of the motor. In addition, the welding method also avoids the problems of local magnetic permeability reduction and iron loss deterioration caused by stamping and fastening, thereby ensuring the efficiency of the motor. Among them, the second welding area and the first welding area 210 are staggered, which can be understood as that the second welding area is also located on the outer periphery of the yoke 240, or two adjacent stator punchings can also be welded between the opposite surfaces of the two to form the stator core 200. In this way, it can be ensured that the first welding area 210 and the second welding area do not have overlapping parts. During the assembly and molding process of the motor, the molding of the stator core 200 and the molding of the stator core 200 and the casing 100 do not interfere with each other, thereby avoiding poor welding between the stator core 200 and the casing 100 and ensuring the connection stability of the stator core 200 and the casing 100.

[0051] Further, in this embodiment, please refer to Figure 1 and Figure 2 The second welding region is provided with a welding groove 250 recessed from the outer periphery of the yoke 240. The welding groove 250 is used to fill with solder. Thus, the welding groove 250 increases the welding surface of the stator laminations welded through the second welding region. Furthermore, the solder filling the welding groove 250 ensures a full weld between the stator laminations, thereby improving the overall stability of the stator core 200. Of course, in other embodiments, the stator laminations can also be connected by pressure welding to form the stator core 200.

[0052] Specifically, in this embodiment, please continue to refer to Figure 1 and Figure 2, the second welding area is in the shape of an elongated strip and extends along the axial direction of the stator core 200. Any stator punching is provided with at least one second welding area. In this way, the axially extending second welding area enables multiple stator punchings to be welded together, thereby ensuring the integrity of the stator core 200. Among them, the second welding area can pass through the stator core 200 along an axis, or the second welding area can be distributed at intervals on an axis, and multiple second welding areas can be distributed in the circumferential direction of the stator core 200, so that every two adjacent stator punchings can be connected by at least one second welding area. In this embodiment, multiple second welding areas are distributed in the circumference of the stator core 200, and any second welding area is arranged to pass through the axial direction of the stator core 200. Of course, in other embodiments, the second welding area can also be spirally wound around the outer circumference of the stator core 200, so that multiple stator punchings are welded into a stable stator core 200.

[0053] In one embodiment, please refer to Figure 1 and Figure 2 , the second welding area is set at the welding position, and the first welding area 210 and the second welding area correspond to different welding positions respectively. It can be understood that the structural strength of the position of the yoke 240 corresponding to the tooth portion 230 is better. In this way, whether it is during the operation of the motor or in the process of welding the stator punchings to form the stator core 200, the deformation of the stator core 200 can be better avoided to reduce noise during the operation of the motor. In addition, one welding position only corresponds to one second welding area or one first welding area 210, which ensures that the stator core 200 is uniformly stressed in the circumferential direction, and also avoids a single welding position being subjected to excessive stress, which causes the stator punching to deform, thereby improving the efficiency of the motor and avoiding the problem of prominent noise of the motor. Specifically, the second welding area can also cover the corresponding welding position in the circumferential direction like the first welding area 210, or the second welding area is in the form of spot welding. Of course, in other embodiments, the second welding area can be set at a position of the yoke 240 not connected to the tooth portion 240 , or the second welding area can be set at a position of the yoke 240 corresponding to the tooth portion 230 or not corresponding to the tooth portion 230 .

[0054] Further, in this embodiment, please refer to Figure 1 and Figure 2The plurality of first welding regions 210 and the plurality of second welding regions are distributed uniformly or alternately or uniformly and alternately along the periphery of the yoke 240 . It can be understood that, with the outer periphery of the yoke 240 as a reference, the first welding area 210 is evenly distributed in the circumferential direction of the stator core 200, so that the force between the stator core 200 and the housing 100 is evenly distributed in the circumferential direction. As for the second welding area, it is also evenly distributed in the circumferential direction of the stator core 200, so that the force between each stator punching on the stator core 200 is evenly distributed. Moreover, based on the multiple teeth 230, the multiple first welding areas 210 and the multiple second welding areas are alternately arranged, which can ensure that when the multiple stator punchings are welded into the stator core 200, or when the stator core 200 is welded to the housing 100, the deformation of the stator core 200 is small, so as to avoid the problem of large noise caused by the deformation of the stator core 200. Moreover, the alternating arrangement of the first welding area 210 and the second welding area can ensure the integrity of the stator core 200 and the integrity of the motor, thereby improving the reliability of the motor. It should be noted that the number of first welding areas 210 and second welding areas is at most equal to the number of teeth 230. In general, the number of teeth 230 is greater than the sum of the first welding areas 210 and the second welding areas. This is typically manifested as follows: second welding areas are respectively configured at welding positions on both circumferential sides of a first welding area 210, forming a weld group. These weld groups are evenly distributed along the circumference of the stator core 200, and teeth 230 that are not radially opposite to the first welding area 210 or the second welding area may exist between two adjacent weld groups. Of course, in other embodiments, multiple first welding areas 210 and multiple second welding areas may also be arranged continuously.

[0055] In another embodiment, please refer to Figure 3 and Figure 4 , two adjacent stator punching sheets are connected by adhesive 260, or, two adjacent stator punching sheets are connected by a paint dipping process. A plurality of stator punching sheets are connected by adhesive 260 to form a stator core 200, or are connected by a pot paint dipping process to form a stator core 200, which can increase the damping effect between the stator punching sheets, thereby improving the overall stability of the stator core 200, and avoiding vibration or loosening of the stator core 200 during the operation of the motor, which is beneficial to the shock absorption and noise reduction of the motor. In addition, compared with the related art, in which the stator punching sheets are fastened by buckle points, the stator punching sheets are connected by adhesive 260 or paint 270, which reduces the conduction ability between the stator punching sheets, avoids the stator core 200 from generating interlayer eddy currents and causing large heat loss, thereby improving the efficiency of the motor. In addition, the bonding and paint dipping connection methods also avoid the problems of local magnetic permeability reduction and iron loss deterioration caused by stamping and fastening, thereby ensuring the efficiency of the motor.

[0056] Further, in this embodiment, please continue to refer to Figure 3 and Figure 4 When two adjacent stator laminations are connected via adhesive 260, the adhesive 260 is configured as epoxy resin or acrylic acid, or a solvent containing both. It should be noted that both epoxy resin and acrylic acid can stably bond multiple stator laminations to form the stator core 200, and acrylic acid and epoxy resin are less soluble in refrigeration oil. Therefore, when the refrigeration oil cools the stator core 200 during the operation of the motor or compressor, the stability of the stator core 200 can be guaranteed. In another embodiment, when two adjacent stator laminations are connected via a varnishing process, the varnishing material is configured as water-based paint or oil-based paint. Paints 270 such as water-based paint and oil-based paint can ensure that multiple stator punchings are stably connected to form the stator core 200, that is, when the stator core 200 is formed by the paint dipping process, it has good stability. In addition, for water-soluble refrigeration oil, the stator core 200 can be formed by the oil-based paint by the paint dipping process. For oil-soluble refrigeration oil, the stator core 200 can be formed by the water-based paint by the paint dipping process.

[0057] In one embodiment, please refer to Figures 1 to 4 , defining the outer diameter of the stator core 200 as D, where D satisfies: 80mm≤D≤160mm. It is understood that for a stator core 200 of this specification, the motor is miniaturized. Thus, welding to the housing 100 via the first welding area 210 helps ensure the stability of the motor, or the stability of the motor in the compressor. It also effectively prevents deformation of the stator core 200 caused by welding, thereby improving the compactness of the motor and avoiding loud abnormal noises during motor operation. Of course, in other embodiments, the motor can also be large-scale and high-power.

[0058] In one embodiment, please refer to Figures 1 to 4 The motor further includes a plurality of coils (not shown), which are wound in a one-to-one correspondence with the plurality of teeth 230. Without loss of generality, the motor of this embodiment is configured as a miniaturized, low-power motor. Thus, the use of concentrated windings can reduce the size of the winding heads at the top and bottom of the motor to improve the compactness of the motor, thereby avoiding large abnormal noises during the operation of the motor and ensuring the smooth operation of the motor. Of course, in other embodiments, the stator core 200 can also use a distributed winding method to wind coils around the teeth 230.

[0059] In one embodiment, please refer to Figures 1 to 4The stator core 200 is provided with 12 teeth 230. Without loss of generality, after the motor is assembled, the circumferential angle between the adjacent second welding area and the first welding area 210 is 30°. This ensures that the first welding area 210 and the second welding area are independently and radially opposite the two adjacent teeth 230. While ensuring the integrity of the motor, it also effectively prevents deformation of the stator core 200 during the welding process, thereby achieving the purpose of vibration and noise reduction. In particular, the 12 teeth 230 have good adaptability to different pole numbers. For motors with more poles, the cogging torque is lower, reducing the vibration and noise of the motor.

[0060] The present invention also proposes a compressor, please refer to Figure 5 The compressor includes a motor, and the specific structure of the motor refers to the above embodiment. Since this compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0061] Please refer to Figure 5 The compressor further includes a compressor housing 300. The housing 100 may be a housing 100 independently provided for the motor. By installing the stator core 200 and the rotor 400 in the housing 100, the motor is integrated into an independent component. In this case, the housing 100 only protects the components of the motor and is then installed in the compressor housing 300. Alternatively, Figure 5 As shown, the motor housing 100 is the compressor housing 300, which not only effectively reduces the volume of the compressor, but also improves the overall stability of the compressor components. In addition, the refrigeration oil of the motor can also act on the refrigerant in the compressor to reduce energy consumption.

[0062] The present invention further provides a refrigeration device including a compressor. The specific structure of the motor in the compressor is similar to that of the above-described embodiments. Since the present refrigeration device utilizes all the technical solutions of all the above-described embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above-described embodiments, and therefore will not be described in detail here. Specifically, the refrigeration device may be an air conditioner or a refrigerator.

[0063] The above descriptions are merely optional embodiments of the present invention and do not limit the scope of protection of the present invention. All equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields within the scope of the present invention are included in the scope of protection of the present invention.

Claims

1. A motor, characterized in that: include: chassis; A stator core is provided in the housing, wherein a central hole is provided in the middle of the stator core, the stator core comprises a yoke and a plurality of teeth distributed along the inner circumference of the yoke, a welding position is provided on the outer circumference of the yoke and radially opposite to the teeth, the welding position is provided with a first welding area, and the first welding area is welded to the housing; The stator core is formed by stacking a plurality of stator punching sheets in the axial direction, and the center hole is used for installing the rotor.

2. The motor according to claim 1, wherein The first welding area covers the corresponding welding position in the circumferential direction.

3. The motor according to claim 1, wherein The first welding area is in the shape of an elongated strip and extends along the axial direction of the stator core; And / or, the plurality of first welding areas are evenly distributed in the circumferential direction of the stator core.

4. The motor according to claim 1, wherein The yoke has a plurality of second welding areas distributed along the circumferential direction. The second welding areas are staggered with the first welding areas, and two adjacent stator punching sheets are welded via the second welding areas.

5. The motor according to claim 4, characterized in that The second welding area is provided with a welding groove recessed from the outer periphery of the yoke, and the welding groove is used for filling with solder; And / or, the second welding area is in the shape of an elongated strip and extends along the axial direction of the stator core, and any stator punching sheet is provided with at least one second welding area.

6. The motor according to claim 4, characterized in that The second welding area is provided at the welding position, and the first welding area and the second welding area correspond to different welding positions respectively.

7. The motor according to claim 6, characterized in that The plurality of first welding areas and the plurality of second welding areas are evenly and / or alternately distributed along the circumference of the yoke.

8. The motor according to claim 1, wherein Two adjacent stator punching sheets are connected by adhesive, or two adjacent stator punching sheets are connected by a paint dipping process.

9. The motor according to claim 8, characterized in that When two adjacent stator punching sheets are connected by adhesive, the adhesive is configured as epoxy resin and / or acrylic acid; When two adjacent stator punching sheets are connected through a paint dipping process, the paint dipping material is configured as water-based paint or oil-based paint.

10. The electric motor according to any one of claims 1 to 9, characterized in that The outer diameter of the stator core is defined as D, and D satisfies: 80 mm ≤ D ≤ 160 mm; And / or, the motor further comprises a plurality of coils, wherein the plurality of coils are wound in a one-to-one correspondence with the plurality of teeth; And / or, the stator core is provided with 12 teeth; And / or, the stator core is configured as an integral stator core.

11. A compressor, characterized in that: The motor comprises the motor according to any one of claims 1 to 10.

12. A refrigeration device, characterized in that: Comprising the compressor of claim 11.

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