CN216904503U

CN216904503U - Motor and refrigeration equipment

Info

Publication number: CN216904503U
Application number: CN202220676356.7U
Authority: CN
Inventors: 谢东文
Original assignee: Sanli Electronics Dongguan Co ltd
Current assignee: Sanli Electronics Dongguan Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-07-05
Anticipated expiration: 2032-03-24

Abstract

The application discloses motor and refrigeration plant relates to motor technical field. The motor comprises a shell assembly, a winding and a rotor; the shell assembly comprises a first shell and a second shell, the first shell and the second shell are matched to enclose a closed installation cavity, a first step part is convexly arranged on one side, close to the installation cavity, of the first shell, and a second step part is convexly arranged on one side, close to the installation cavity, of the second shell; the winding and the rotor are both arranged in the installation cavity, and the winding is arranged in the circumferential direction of the rotor in a surrounding manner; along the axial of motor, the both sides one-to-one butt of winding in on first step portion with the second step portion, the circumference lateral wall butt of winding in casing assembly's circumference inner wall. The application provides a motor can simplify the assembly procedure, and can provide dustproof, waterproof protection to the winding.

Description

Motor and refrigeration equipment

Technical Field

The application relates to the technical field of motors, in particular to a motor and refrigeration equipment.

Background

At present, in a motor used in a refrigerating apparatus such as an ice chest, a stator coil and the like are usually exposed, and the coil needs to be fixed by screwing. Therefore, the assembly steps of the motor are complicated, and the processing efficiency is influenced. Meanwhile, along with the prolonging of the service life, impurities such as dust, condensate and the like are often attached to the surface layer of the coil, so that the problems of corrosion, short circuit and the like of the coil are caused, and the normal use of the motor is influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a motor and refrigeration plant makes things convenient for the assembly of winding, and provides effectual dustproof, waterproof effect for the winding.

The present application provides:

an electric machine comprising a housing assembly, a winding and a rotor;

the shell assembly comprises a first shell and a second shell, the first shell and the second shell are matched to enclose a closed installation cavity, a first step part is convexly arranged on one side, close to the installation cavity, of the first shell, and a second step part is convexly arranged on one side, close to the installation cavity, of the second shell;

the winding and the rotor are both arranged in the installation cavity, and the winding is arranged in the circumferential direction of the rotor in a surrounding manner;

along the axial of motor, the both sides one-to-one butt of winding in first step portion with on the second step portion, the circumference lateral wall butt of winding in casing assembly's circumference inner wall.

In some possible embodiments, the rotor includes a magnetic assembly and an output shaft, the magnetic assembly is fixedly disposed in a circumferential direction of the output shaft, the magnetic assembly is located between the winding and the output shaft, and one end of the output shaft penetrates through one end of the first housing, which is far away from the second housing, and is exposed relative to the mounting cavity;

an end wall of the first shell, which is far away from one end of the second shell, and an end wall of the second shell, which is far away from one end of the first shell, are both provided with a mounting seat, and the mounting seats are arranged close to one side of the mounting cavity;

the output shaft is coaxial with the two mounting seats, and the output shaft is rotatably mounted with the two mounting seats respectively.

In some possible embodiments, the mounting seat includes a first bracket and a second bracket, both of which are annular, the second bracket is arranged around the circumference of the first bracket, and one side of the second bracket, which is close to the mounting cavity, protrudes relative to the first bracket;

the motor further comprises a bearing and an annular clamping piece, an inner ring of the bearing is fixedly connected to the output shaft, one end of an outer ring of the bearing abuts against one side wall, away from the second support, of the first support, the clamping piece is fixedly clamped at the other end of the outer ring of the bearing, and the clamping piece is fixedly installed at one end, away from the first support, of the second support.

In some possible embodiments, a side wall of the first bracket, which is away from the second bracket, is a reverse conical surface, the outer side wall of the outer ring of the bearing is a part of a spherical surface, and the outer side wall of the outer ring of the bearing abuts against the reverse conical surface.

In some possible embodiments, the electric machine further comprises a housing;

the housing covers one side of the bearing far away from the first support.

In some possible embodiments, the motor further includes a capacitor disposed on a side of the housing assembly away from the mounting cavity, the capacitor being electrically connected to the winding.

In some possible embodiments, the motor further includes a protective casing, the protective casing and the casing assembly cooperate to enclose an enclosed cavity, and the capacitor is located in the enclosed cavity.

In some possible embodiments, a plurality of buckles are convexly arranged on one side of the protective shell close to the shell assembly, and a plurality of clamping grooves matched with the buckles are formed in the shell assembly;

the plurality of buckles are clamped in the plurality of clamping grooves in a one-to-one correspondence mode.

In some possible embodiments, a side of the first casing close to the second casing is convexly provided with a connecting arm, the connecting arm extends in a direction close to the second casing, and the connecting arm is spaced apart from the second casing.

In addition, the application also provides a refrigeration device, which comprises the motor provided by the application.

The beneficial effect of this application is: the application provides a motor and refrigeration plant, and refrigeration plant includes this motor. The motor comprises a shell assembly, a winding and a rotor, wherein the winding and the rotor are arranged in an installation cavity of the shell assembly. In addition, along the axial of motor, the both sides of winding are supported and connected on the two step portion of casing subassembly inboard, and the circumference lateral wall of winding and casing subassembly circumference inner wall butt. Therefore, when the shell assembly is assembled, the structure of the winding can be limited and fixed, the winding is fixedly assembled in the shell assembly, and extra steps such as screwing are not needed. Therefore, the assembling steps of the motor can be simplified, and the production efficiency is accelerated. Meanwhile, the shell assembly can provide effective dustproof and waterproof protection for the winding, and the damage speed of the winding is delayed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 illustrates an exploded view of an electric machine in some embodiments;

FIG. 2 illustrates a cross-sectional structural view of the motor in some embodiments;

FIG. 3 is a partially enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic perspective view of the motor part structure after assembly in some embodiments;

FIG. 5 is a schematic perspective view of an assembled motor part structure in some embodiments;

FIG. 6 illustrates a perspective view of the second housing in some embodiments;

FIG. 7 illustrates another perspective view of the second housing in some embodiments;

fig. 8 illustrates a perspective view of a protective case in some embodiments.

Description of the main element symbols:

10-a housing assembly; 101-a mounting cavity; 11-a first housing; 111-a first step; 112-a first mount; 113-a linker arm; 12-a second housing; 121-a second step; 122-a second mount; 1221-a first scaffold; 12211-cavity; 1222-a second support; 123-via holes; 124-wire through hole; 125-card slot; 20-winding; 30-a rotor; 31-a magnetic component; 32-an output shaft; 40-a capacitor; 41-pin; 51-a bearing; 52-a clamp; 53-a housing; 61-a first screw; 62-a second screw; 63-a third screw; 64-line cards; 70-protective shell; 701-a closed cavity; 71-buckling; 81-plastic cover; 82-spacer.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The embodiment provides a motor which can be used in refrigeration equipment such as a refrigerator and an ice chest. For example, the motor may be used to drive a load device such as a heat dissipation fan in a refrigeration device to operate, so as to accelerate heat dissipation of the refrigerant.

As shown in fig. 1 and 2, the motor may include a housing assembly 10, a winding 20, and a rotor 30.

The housing assembly 10 may include a first housing 11 and a second housing 12, the first housing 11 and the second housing 12 may cooperate to form a mounting cavity 101, and the mounting cavity 101 is isolated from an external environment.

In some embodiments, a first step portion 111 is convexly provided on a side of the first housing 11 close to the mounting cavity 101. The first step portion 111 may be disposed on a circumferential side wall of the first housing 11, and the first step portion 111 may be disposed around the circumference of the mounting cavity 101. The first step portion 111 may be provided toward the second case 12 side.

Referring to fig. 6, a second step 121 is convexly disposed on a side of the second housing 12 close to the mounting cavity 101. Similarly, the second step portion 121 may be disposed on a circumferential side wall of the second housing 12, and the second step portion 121 may also be disposed around the circumference of the mounting cavity 101. In an embodiment, the second step portion 121 may face the first housing 11 side, and the second step portion 121 is disposed opposite to the first step portion 111.

As shown in fig. 2, the winding 20 and the rotor 30 are both mounted in the mounting cavity 101. Accordingly, the housing assembly 10 provides the winding 20 and the rotor 30 with corresponding dust-proof and waterproof protection, and also delays the aging of the winding 20 and the rotor 30, and prolongs the service life of the motor. In an embodiment, the windings 20 may be circumferentially disposed about the rotor 30.

In the axial direction of the motor, both sides of the winding 20 abut against the first step portion 111 and the second step portion 121 in a one-to-one correspondence. Specifically, an end surface of the winding 20 close to the first housing 11 may abut against an end surface of the first stepped portion 111 opposite to the second stepped portion 121. An end surface of the winding 20 close to the second case 12 may abut against an end surface of the second stepped portion 121 opposite to the first stepped portion 111. Therefore, the axial limiting of the winding 20 can be realized, and the winding 20 is prevented from shaking randomly along the axial direction of the motor in the installation cavity 101. In an embodiment, the axial direction of the motor may refer to the extension direction of the axis L.

In an embodiment, as shown in fig. 2, the circumferential side wall of the winding 20 may abut the circumferential inner wall of the housing assembly 10. Therefore, the winding 20 can be limited in the radial direction, and the winding 20 is prevented from freely swinging in the radial direction in the installation cavity 101. Thus, the winding 20 can be fixed to the housing assembly 10 by axially and radially positioning the winding 20.

When assembling the motor, the winding 20 may be put into the second case 12 such that the circumferential edge of the winding 20 is placed on the second step portion 121. When the first housing 11 is assembled to the second housing 12, the first step portion 111 can press and limit the side of the winding 20 away from the second step portion 121, so that the winding 20 can be fixedly assembled. In this process, the operator does not need to perform additional operations to fix the stationary winding 20 in the housing assembly 10, so that the assembly process of the motor can be simplified and the production efficiency can be improved.

In addition, in the embodiment, the winding 20 is assembled in the closed installation cavity 101, so that the winding 20 is prevented from being exposed to the external environment. Therefore, the oxidation of the enameled wire on the surface of the winding 20 can be delayed, the problems of short circuit and the like of the winding 20 can be avoided, the service life of the winding 20 can be prolonged, and the service life of the motor can be further prolonged.

As shown in fig. 1 and 4, in some embodiments, the first housing 11 and the second housing 12 may be fixedly connected by a plurality of second screws 62. The plurality of second screws 62 may be uniformly distributed around the circumference of the housing assembly 10 to achieve a stable connection between the first housing 11 and the second housing 12. Meanwhile, the detachable connection between the first shell 11 and the second shell 12 can be realized, and the operations of overhauling, replacing and the like of the structural member in the installation cavity 101 in the subsequent use are facilitated.

In some embodiments, the first housing 11 and the second housing 12 can be made of aluminum, so that the heat generated by the windings 20 in the installation cavity 101 during operation can be dissipated outwards quickly, and the heating speed of the motor is reduced.

Of course, in other embodiments, the first housing 11 and the second housing 12 may also be made of a metal material such as copper, etc. to ensure heat dissipation of the internal structural components.

As shown in fig. 1 and 4, in some embodiments, two connecting arms 113 are further protruded from a side of the first housing 11 close to the second housing 12. The connecting arm 113 may extend in a direction close to the second housing 12, and the connecting arm 113 is spaced apart from the second housing 12. In an embodiment, the first screw 61 can be used to lock the connecting arm 113 to the related bracket in the refrigeration appliance, so as to fix the motor in the refrigeration appliance.

As shown in fig. 1 and 2, it is understood that the rotor 30 may include an output shaft 32, and one end of the output shaft 32 may be inserted into the housing assembly 10 and be protruded with respect to one end of the housing assembly 10. Thus, the output shaft 32 can be conveniently in transmission connection with a load device in the refrigeration equipment to drive the load device to operate. In an embodiment, the output shaft 32 of the rotor 30 may be disposed along the axis L.

As shown in fig. 2 and 3, a first mounting seat 112 is convexly disposed on an end wall of the first housing 11 away from the second housing 12, and the first mounting seat 112 may be disposed near the side of the mounting cavity 101. Correspondingly, a second mounting seat 122 is convexly arranged on an end wall of the second housing 12 away from the first housing 11, and the second mounting seat 122 may also be arranged near the side of the mounting cavity 101. In an embodiment, the first mounting seat 112 and the second mounting seat 122 are coaxial and opposite, and both mounting seats are coaxial with the output shaft 32.

In some embodiments, the first mounting seat 112 may be integrally formed on the first housing 11. Accordingly, the second mounting seat 122 may also be integrally formed on the second housing 12.

In an embodiment, one end of the output shaft 32 may be inserted into the first mounting seat 112, and the output shaft 32 protrudes relative to the end wall where the first mounting seat 112 is located, that is, one end of the output shaft 32 close to the first mounting seat 112 is exposed to the external environment. In one embodiment, the output shaft 32 is rotatably mounted with respect to the first mounting base 112, i.e., the output shaft 32 can rotate smoothly with respect to the first mounting base 112.

The other end of the output shaft 32 may extend to the second mounting seat 122, and the corresponding end of the output shaft 32 may be rotatably mounted with the second mounting seat 122, i.e., the output shaft 32 may rotate smoothly relative to the second mounting seat 122.

In an embodiment, the two mounting seats may be substantially identical in structure, and the output shaft 32 may be connected to the two mounting seats in the same manner. The second mounting seat 122 will be described in detail below as an example.

As shown in fig. 3, the second mounting seat 122 may include a first bracket 1221 and a second bracket 1222 that are nested, the second bracket 1222 may be circumferentially disposed around the first bracket 1221, and the second bracket 1222 may be spaced apart from the first bracket 1221. In an embodiment, the first bracket 1221 and the second bracket 1222 may each have a circular ring shape. Accordingly, a side of the first support 1221 away from the second support 1222 may enclose a cavity 12211, and the cavity 12211 is communicated with the mounting cavity 101. An end of the output shaft 32 may be inserted in the cavity 12211.

In an embodiment, the motor further includes a bearing 51, the bearing 51 may be installed between the output shaft 32 and the first bracket 1221, and the bearing 51 may be partially received in the cavity 12211. Thus, the output shaft 32 can be smoothly rotated with respect to the second mount 122.

Specifically, the inner race of the bearing 51 may be fixedly connected to the output shaft 32. In some embodiments, a side wall of the first support 1221 near the cavity 12211 may have an inverted cone shape. The side of the outer race of the bearing 51 remote from the inner race may be substantially spheroidal. In an embodiment, the outer ring of the bearing 51 may abut against a sidewall of the first bracket 1221 near the cavity 12211. Thus, the first bracket 1221 can limit the outer race of the bearing 51 in the axial direction and the radial direction at the same time.

Further, an end of the second bracket 1222 near the mounting cavity 101 may protrude with respect to the first bracket 1221. That is, the second bracket 1222 is higher than the first bracket 1221 in the axial direction of the motor. In one embodiment, the motor further comprises a clamping member 52, and the clamping member 52 can be fixedly mounted on an end of the second bracket 1222 far away from the first bracket 1221. Illustratively, the clamping member 52 can be fixedly attached to the second bracket 1222 by screwing, welding, clipping, etc.

In an embodiment, the clamping member 52 may be fixedly clamped with an end of the outer ring of the bearing 51 away from the cavity 12211. Therefore, both ends of the outer ring of the bearing 51 are axially and radially limited, and the outer ring of the bearing 51 is fixedly mounted on the second mounting seat 122. In some embodiments, the clamping member 52 may be a plum blossom clamp made of metal.

In some embodiments, the motor further includes a housing 53, the housing 53 may be disposed on a side of the clamping member 52 away from the first bracket 1221, and the housing 53 covers an end of the bearing 51 away from the first bracket 1221. That is, the housing 53 isolates the installation space of the bearing 51 from the installation cavity 101, thereby achieving the closed protection of the bearing 51. Therefore, the sundries in the mounting cavity 101 can be prevented from entering the mounting space of the bearing 51, the probability of the sundries entering the bearing 51 is reduced, the smooth operation of the bearing 51 is ensured, and the smooth rotation of the output shaft 32 is ensured. It will be appreciated that the output shaft 32 may pass through the housing 53. In an embodiment, the housing 53 may be fixedly connected to an end of the second bracket 1222 far from the first bracket 1221 by screwing, welding, or the like together with the clamping member 52.

In an embodiment, the first and second mounting

seats

112 and 122 may be provided with corresponding clamps 52 and housings 53.

As shown in fig. 1 and 2, it can be understood that the rotor 30 further includes a magnetic assembly 31, and the magnetic assembly 31 can be fixedly disposed on the circumferential direction of the output shaft 32. The magnetic component 31 may be located between the output shaft 32 and the windings 20, and a gap is provided between the magnetic component 31 and the windings 20.

The magnetic assembly 31 may include a plurality of N-pole magnets (not shown) and a plurality of S-pole magnets (not shown). When the winding 20 is energized, the winding 20 generates a corresponding magnetic field, the magnetic assembly 31 can be driven by the magnetic field to rotate, and then the magnetic assembly 31 drives the output shaft 32 to synchronously rotate, so that power output is realized.

As shown in fig. 1, 2 and 5, the motor further includes a capacitor 40, and the capacitor 40 may be disposed on a side of the housing assembly 10 away from the installation cavity 101, that is, the capacitor 40 is located on an outer side of the housing assembly 10. Therefore, when the motor works, the capacitor 40 can be quickly radiated, and heat generated by the winding 20 can be prevented from being transferred to the capacitor 40, so that the smooth work of the motor is ensured. In an embodiment, the capacitor 40 may be electrically connected with the winding 20.

Referring to fig. 7, in some embodiments, the capacitor 40 may be disposed at an end of the second housing 12 away from the first housing 11. Correspondingly, a through hole 123 may be formed in an end wall of the second housing 12 at an end away from the first housing 11, so that the pin 41 of the capacitor 40 enters the mounting cavity 101 to be electrically connected with the winding 20.

In some embodiments, the motor further includes a protective casing 70, and the protective casing 70 may cover the capacitor 40 from a side of the capacitor 40 away from the second housing 12. Accordingly, the protective shell 70 may cooperate with an end wall of the second housing 12 at an end away from the first housing 11 to define a closed cavity 701, and the capacitor 40 may be located in the closed cavity 701. Therefore, the dust-proof and water-proof protection of the capacitor 40 and the position of the via hole 123 can be realized, and the influence of dust and other impurities on the surface of the capacitor 40 to the heat dissipation of the capacitor 40 is avoided. In one embodiment, the protective shell 70 may be a plastic shell.

In some embodiments, an end of the capacitor 40 away from the second housing 12 may abut against an inner wall of the protective housing 70, so that the capacitor 40 may be fixed in a limited manner, and the reliability of connection between the capacitor 40 and the winding 20 is ensured.

Referring to fig. 8, in an embodiment, a plurality of fasteners 71 are protruded from a side of the protective shell 70 close to the second housing 12 for fastening the second housing 12. Correspondingly, a plurality of slots 125 may be formed in an end wall of the second housing 12 near one end of the protective shell 70. In an embodiment, the plurality of buckles 71 may be disposed in one-to-one correspondence with the plurality of slots 125, and the buckles 71 may be clipped in the corresponding slots 125 to realize the fixed connection between the protective shell 70 and the second shell 12.

In some embodiments, the plurality of clasps 71 may be evenly distributed around the circumference of the protective shell 70, so that each portion of the protective shell 70 may be connected with the second housing 12, thereby ensuring the connection stability of the protective shell 70 and the second housing 12.

In other embodiments, the protective shell 70 and the second housing 12 may be detachably connected by screws, threads, or the like, so as to perform operations such as maintenance and replacement of the capacitor 40 in subsequent use, thereby facilitating maintenance of the motor.

As shown in fig. 1 and 4, in some embodiments, the circumferential sidewall of the second casing 12 is further opened with a wire through hole 124, so that a wire connected to the winding 20 passes through the wire through hole, and the winding 20 is electrically connected to other external electrical components. Accordingly, the wire passage holes 124 may be fixedly positioned with the flexible wire clips 64, and the wires connecting the windings 20 may be threaded through the wire clips 64. On the one hand, the wear of the wires can be reduced. On the other hand, the fixation of the lead can also be realized.

As shown in fig. 1 and 2, in some embodiments, the motor further includes a plastic sleeve 81, and the plastic sleeve 81 can be connected to the end of the output shaft 32 protruding from the housing assembly 10. Specifically, the plastic sleeve 81 can be sleeved on the end of the output shaft 32 and can be locked and fixed by the third screw 63. In an embodiment, a gasket 82 may be further disposed between the plastic sleeve 81 and the flange at the end of the third screw 63, and the gasket 82 may abut between the flange at the end of the third screw 63 and the plastic sleeve 81.

Embodiments also provide a refrigeration device, which can comprise the motor in the embodiments. The motor can be in transmission connection with a corresponding load device in the refrigeration equipment so as to drive the load device to operate. For example, the load device in the refrigeration equipment may be a heat dissipation fan in a condenser or the like.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. An electric machine comprising a housing assembly, a winding and a rotor;

2. The motor of claim 1, wherein the rotor comprises a magnetic assembly and an output shaft, the magnetic assembly is fixedly arranged in the circumferential direction of the output shaft, the magnetic assembly is positioned between the winding and the output shaft, and one end of the output shaft penetrates through one end of the first shell, which is far away from the second shell, and is exposed relative to the mounting cavity;

3. The motor of claim 2, wherein the mounting seat comprises a first bracket and a second bracket which are both annular, the second bracket is arranged around the circumference of the first bracket, and one side of the second bracket close to the mounting cavity is protruded relative to the first bracket;

4. The motor of claim 3, wherein a side wall of the first bracket away from the second bracket is a reverse tapered surface, an outer side wall of an outer ring of the bearing is a part of a spherical surface, and the outer side wall of the outer ring of the bearing abuts against the reverse tapered surface.

5. The electric machine of claim 3 or 4, further comprising a housing;

the housing covers one side of the bearing far away from the first support.

6. The electric machine of claim 1 further comprising a capacitor disposed on a side of said housing assembly remote from said mounting cavity, said capacitor being electrically connected to said winding.

7. The electric machine of claim 6 further comprising a protective housing cooperating with the housing assembly to define an enclosed cavity, the capacitor being located in the enclosed cavity.

8. The motor according to claim 7, wherein a plurality of buckles are convexly arranged on one side of the protective shell close to the shell assembly, and a plurality of clamping grooves matched with the buckles are formed on the shell assembly;

9. The motor according to claim 1, wherein a connecting arm is protrudingly provided on a side of the first housing adjacent to the second housing, the connecting arm extending in a direction adjacent to the second housing, the connecting arm being spaced apart from the second housing.

10. A refrigeration device comprising an electric machine as claimed in any one of claims 1 to 9.