CN223967726U

CN223967726U - Motor and refrigeration equipment

Info

Publication number: CN223967726U
Application number: CN202520456539.1U
Authority: CN
Inventors: 姜磊; 朱屹; 王献辉; 宋玉龙; 王国栋; 马超杰
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2025-03-14
Filing date: 2025-03-14
Publication date: 2026-03-03
Anticipated expiration: 2035-03-14

Abstract

This utility model discloses a motor and a refrigeration device, relating to the field of motor technology. The motor includes a motor body and an electrical control structure. A wiring hole is provided at the bottom of the housing. The electrical control structure includes an outer shell, an electrical control device, and connecting wires housed within the outer shell. A connecting portion extends downward from the top of the outer shell, with a connecting channel connecting the wiring hole and the inner cavity of the outer shell. One end of the connecting wire passes through the connecting channel and the wiring hole to connect to the stator winding, and the other end connects to a terminal block. This allows the connecting wire to be routed within the housing and its interior. When water leaks inside the housing, the water can enter the connecting channel through the wiring hole and then flow into the inner cavity of the outer shell without touching the circuit board assembly. The lower end of the connecting portion protrudes from or is flush with the lower side of the circuit board assembly, optimizing the drainage path. Leaking water can be directly discharged through the water hole at the bottom of the outer shell, thus avoiding the risk of water accumulation and damage inside the electrical control device.

Description

Motor and refrigeration equipment

Technical Field

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

Background

In the axial space layout of a brushless motor of an external machine of an ECM commercial air conditioner, a motor main body and an electric control driving device adopt a split type shell protection design. The UVW three-phase power supply circuit adopts an external winding routing scheme, namely after the circuit is led out from a motor stator winding, the circuit firstly penetrates out of a motor protective shell and then secondarily penetrates into an independent sealing cavity of the electric control driving device, and finally is physically connected with an electric connection terminal of the circuit board assembly.

By constructing a double-shell isolation mechanism, the migration path of potential leakage water of the motor cavity to the electric control unit is effectively blocked. However, the exposed wire connection problem causes two technical pain points, namely 1) the exposed section wire harness needs to be additionally provided with a waterproof sheath or sealant to be treated, the protection cost is increased, and 2) a redundant bending path is formed by crossing the shell, so that the appearance of the device is messy, the aesthetic degree of industrial design is influenced, and the stress fatigue risk of wires is possibly caused.

Disclosure of utility model

The utility model mainly aims to provide a motor and refrigeration equipment, and aims to provide a motor which can prevent water leakage of a motor cavity from reaching a circuit board assembly and prevent the appearance of a connecting wire from being influenced.

In order to achieve the above object, the present utility model provides an electric motor comprising:

The motor body comprises a shell, a stator arranged in the shell, a wire passing hole arranged at the bottom of the shell, and

The electric control structure comprises a shell, and an electric control device and a grounding wire which are arranged in the shell, wherein the electric control device comprises a circuit board assembly and a grounding terminal which is electrically connected with the circuit board assembly, and the top of the shell is arranged at the bottom of the shell;

The top downwardly extending of shell has the intercommunication portion, the intercommunication portion is provided with the intercommunication the wire hole with the intercommunication passageway of shell inner chamber, the intercommunication portion is located one side of circuit board assembly, just the lower extreme of intercommunication portion is outstanding or the parallel and level the downside setting of circuit board assembly, connect wire one end to wear to locate the intercommunication passageway with the wire hole with the winding of stator is connected, the other end with connect the electric terminal to be connected, the bottom of shell still is provided with water hole.

In an embodiment, the motor further comprises a glue sealing structure arranged in the shell, the glue sealing structure is located at the upper end of the shell, and a glue filling surface of the lower end face of the glue sealing structure protrudes or is flush with the lower side face of the circuit board assembly so as to glue the circuit board assembly.

In an embodiment, the communicating portion includes a side wall portion surrounding the annular side portion of the housing to form the communicating channel, and a guide inclined surface spaced from and disposed opposite to the annular side portion is provided on an inner side of the side wall portion, and is inclined downward from a top of the housing toward a direction approaching the annular side portion.

In one embodiment, a first connecting hole is formed in the top of the shell, a second connecting hole is formed in the shell, and the shell is fixed with the shell through a first connecting piece penetrating through the first connecting hole and the second connecting hole;

The lower hole edge of the first connecting hole is flush with or lower than the circuit board assembly.

In an embodiment, the circuit board assembly includes a first circuit board and a second circuit board disposed at intervals in an up-down direction, the first circuit board and the housing are connected through a first connection structure, and the second circuit board and the first circuit board are connected through a second connection structure.

In one embodiment, the first connection structure comprises a third connection hole arranged on the first circuit board and a fourth connection hole arranged on the shell, the first circuit board is fixed with the shell through a second connection piece which sequentially penetrates through the third connection hole and the fourth connection hole, and/or,

The second connecting structure comprises a clamping part and a matching part which are respectively arranged on the first circuit board and the second circuit board, and the first circuit board and the second circuit board are clamped and connected through the clamping part and the matching part.

In one embodiment, the circuit board assembly further comprises a spacer disposed on the first circuit board or the second circuit board, the spacer being located between the first circuit board and the second circuit board.

In one embodiment, the circuit board assembly further comprises a power module disposed below the top of the housing;

and a heat dissipation structure is arranged at the top of the shell and corresponds to the area of the power module, and the heat dissipation structure is in heat exchange relation with the power module.

In one embodiment, the heat dissipation structure includes a plurality of ribs protruding from an upper surface of the top of the housing.

In one embodiment, the housing is provided as a metal housing, and/or,

The electric control structure further comprises a fixing structure which is arranged on the circuit board assembly and used for fixing the cable.

The utility model also proposes a refrigeration device comprising a motor comprising:

In one embodiment, the refrigeration appliance includes an air conditioner.

According to the technical scheme, the communication part downwards extends from the top of the shell, the communication channel of the communication part is communicated with the wire passing hole and the inner cavity of the shell, one end of the wire is penetrated through the communication channel and the wire passing hole and is connected with the winding of the stator, the other end of the wire is connected with the electric connecting terminal, so that the wire can be routed in the shell and the inner part of the shell, and when water seeps in the shell, moisture can enter the communication channel through the wire passing hole and then flows to the inner cavity of the shell without touching the circuit board assembly. Because the position of intercommunication lower extreme is outstanding or the parallel and level the downside setting of circuit board subassembly optimizes the drainage route, and the percolating water can be directly through the water hole of shell bottom is discharged to avoided moisture is in the inside risk of gathering and causing the harm of electrically controlled device, in order to provide one kind can enough avoid percolating water of motor cavity to circuit board subassembly, can avoid the wiring to expose again and influence pleasing to the eye motor.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 to 3 are schematic structural views of an embodiment of a motor according to the present utility model;

FIG. 4 is an exploded view of the motor of FIG. 1;

FIG. 5 is a schematic side view of the motor of FIG. 1;

FIGS. 6 and 7 are schematic cross-sectional views of A-A of FIG. 5;

Fig. 8 and 9 are schematic views of part of the electrical control structure in fig. 1;

fig. 10 is a schematic diagram of another view of the electronic control structure in fig. 1.

Reference numerals illustrate:

100. The motor comprises a motor body, a motor 1, a housing, a wire passing hole, a 1b, a second connecting hole, a 20, an electric control structure, a 2, a housing, a 21, a communicating part, a 21a, a communicating channel, a 211, a guiding inclined plane, a 2b, a water passing hole, a 2c, a first connecting hole, a 22, a heat radiating structure, a 221, a convex rib, a 23, an electric control device, a 231, a circuit board assembly, a 2311, a first circuit board, a 2312, a second circuit board, a 232, an electric connecting terminal, a 233, a power module, a 24, an electric connecting wire, a 25, a fixing structure, a 30, a glue sealing structure, a 31, a glue filling surface, a 4, a first connecting piece, a 51, a first connecting structure, a 52, a second connecting structure and a 6, and a spacing part.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present utility model), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a motor, and aims to provide a motor which can prevent water leakage of a motor cavity from reaching a circuit board assembly and prevent the appearance of a connecting wire from being influenced.

Referring to fig. 1 and 5-7, in an embodiment of the utility model, the motor 100 includes a motor body 10 and an electric control structure 20, the motor body 10 includes a housing 1 and a stator disposed in the housing 1, a wire passing hole 1a is disposed at the bottom of the housing 1, the electric control structure 20 includes a housing 2, an electric control device 23 and a grounding wire 24 disposed in the housing 2, the electric control device 23 includes a circuit board assembly 231 and a grounding terminal 232 electrically connected to the circuit board assembly 231, the top of the housing 2 is mounted at the bottom of the housing 1, a communication portion 21 extends downward from the top of the housing 2, the communication portion 21 is provided with a communication channel 21a communicating the wire passing hole 1a and an inner cavity of the housing 2, the communication portion 21 is disposed at one side of the circuit board assembly 231, a lower end of the communication portion 21 protrudes or a lower side of the circuit board assembly 231 is disposed, one end of the grounding wire 24 is disposed through the communication channel 21a and the wire passing hole 1 and the wire passing hole, and the other end of the grounding wire is flush with the stator winding 2b is disposed at the other end of the housing 2.

It will be appreciated that the motor body 10 includes the housing 1, and a rotor and a stator are provided inside the housing 1. For electrical connection, the bottom of the housing 1 is provided with one of the via holes 1a. The via hole 1a is not only used for electrical connection, but also has a drainage function, and can guide the outflow of moisture that may enter the casing 1.

The electric control structure 20 comprises the shell 2, the electric control device 23 arranged in the shell 2 and the grounding wire 24. The electronic control device 23 includes the circuit board assembly 231 and an electrical terminal 232 electrically connected to the circuit board assembly 231. Since the top of the housing 2 is installed at the bottom of the casing 1, the communication portion 21 is formed to extend downward. The communication portion 21 is provided with the communication channel 21a, and the channel connects the wire passing hole 1a and the inner cavity of the housing 2, so that the wire connecting 24 can run inside the housing 1 and the housing 2, and connect the winding of the stator and the electric connecting terminal 232 of the electric control device 23.

The communication part 21 is located at one side of the circuit board assembly 231, and its lower end protrudes from the lower side of the circuit board assembly 231 or is disposed to be flush with the lower side of the circuit board assembly 231. Even if moisture flows in through the wire passing hole 1a, the moisture does not contact the circuit board assembly 231, but is directly discharged from the water passing hole 2b at the bottom of the housing 2. By the arrangement, short circuit or other electrical faults caused by moisture can be effectively avoided.

The electric connection wire 24 has one end connected to the winding of the stator through the communication passage 21a and the wire passing hole 1a, and the other end connected to the electric connection terminal 232 of the electric control device 23. So that the wiring lines 24 can be routed inside the casing 1 and the housing 2, not only simplifying the installation process, but also ensuring that the internal wiring of the motor 100 is neat and orderly, and reducing the possibility of external interference.

In the technical solution of the present utility model, by extending the communicating portion 21 downward at the top of the housing 2, the communicating channel 21a of the communicating portion 21 communicates the wire passing hole 1a with the inner cavity of the housing 2, one end of the wire 24 is threaded through the communicating channel 21a and the wire passing hole 1a to connect with the winding of the stator, and the other end is connected with the electrical terminal 232, so that the wire 24 can run inside the housing 1 and the housing 2, and when water leaks inside the housing 1, moisture can enter the communicating channel 21a through the wire passing hole 1a and then flow to the inner cavity of the housing 2 without touching the circuit board assembly 231. Because the lower end of the communicating portion 21 is protruded or flush with the lower side surface of the circuit board assembly 231, the drainage path is optimized, and the leakage water can be directly discharged through the water passing hole 2b at the bottom of the housing 2, so that the risk of damage caused by accumulation of moisture in the electric control device 23 is avoided, and the motor 100 capable of avoiding damage of the leakage water of the motor cavity to the circuit board assembly 231 and avoiding the exposure of the grounding wire 24 is provided.

Further, referring to fig. 7, in this embodiment, the motor 100 further includes a glue sealing structure 30 disposed in the housing 2, the glue sealing structure 30 is located at an upper end of the housing 2, and a glue filling surface 31 of a lower end surface of the glue sealing structure 30 protrudes or is flush with a lower side surface of the circuit board assembly 231, so as to glue-seal the circuit board assembly 231.

The glue seal 30 is disposed at an upper end of the interior of the housing 2 and is primarily used to completely seal the circuit board assembly 231 by a glue-filling process to provide an additional protective layer.

The glue seal 30 is located at the upper end of the housing 2 and directly covers the circuit board assembly 231. And the lower end surface of the sealing structure 30, i.e. the glue-pouring surface 31, is arranged to protrude or be flush with the lower side surface of the circuit board assembly 231, because the sealing structure 30 can provide a physical barrier to ensure that the circuit board assembly 231 is not accessible even if moisture or other impurities enter the interior of the housing 2.

It should be noted that, the glue sealing structure 30 is formed by a glue filling process, after the circuit board assembly 231 is mounted in the housing 2, the circuit board assembly 231 is inverted, and through the glue filling process, a layer of uniform and seamless sealing layer can be formed around the circuit board assembly 231, the communication portion 21 protrudes or is flush with the lower side surface of the circuit board assembly 231, and the glue filling surface 31 of the pouring sealant is set at a height not exceeding the end surface of the communication portion 21, so that the pouring sealant is prevented from flowing into the communication channel 21a. The solidified pouring sealant not only can prevent water and dust, but also has a certain buffering effect, and is helpful for absorbing shock, thereby further protecting the circuit board assembly 231 from mechanical damage.

So configured, through the structural features of the communication portion 21 and the glue sealing structure 30, the moisture entering the housing 2 is directly discharged through the water passing hole 2b, without affecting the function of the circuit board assembly 231. The glue seal 30 prevents moisture, dust and other contaminants from attacking the circuit board assembly 231.

Specifically, referring to fig. 8 and 10, in an embodiment, the communication portion 21 includes a side wall portion surrounding the annular side portion of the housing 2 to form the communication channel 21a, and a guiding inclined surface 211 spaced from and disposed opposite to the annular side portion is provided on an inner side of the side wall portion, and the guiding inclined surface 211 is inclined downward from a top of the housing 2 toward a direction approaching the annular side portion.

The communication portion 21 includes the side wall portion, which forms the communication passage 21a together with the annular side portion of the housing 2.

The inner side of the side wall portion has the guide slope 211 inclined downward from the top of the housing 2 gradually approaching the annular side portion, and the guide slope 211 is capable of guiding the moisture entering the communication passage 21a to flow toward the inner cavity of the housing 2 instead of being retained in the vicinity of the motor body 10 or the circuit board assembly 231.

In this way, the guiding inclined surface 211 is provided, so that even if moisture enters the communication channel 21a through the wire passing hole 1a, the moisture is quickly guided to the inner cavity of the housing 2 and discharged through the water passing hole 2b, thereby reducing the risk of damage to the circuit board assembly 231 caused by the moisture.

Further, referring to fig. 7, in order to enable the motor body 10 and the electric control structure 20 to be fixedly connected, in this embodiment, a first connecting hole 2c is provided at the top of the housing 2, a second connecting hole 1b is provided on the casing 1, the housing 2 is fixed to the casing 1 by a first connecting member 4 penetrating through the first connecting hole 2c and the second connecting hole 1b, and a lower hole edge of the first connecting hole 2c is flush with or lower than the circuit board assembly 231.

The top of the shell 2 is provided with a first connecting hole 2c, correspondingly, the shell 1 is provided with a second connecting hole 1b, the first connecting hole 2c and the second connecting hole 1b can be rivet holes or threaded holes, and the shell 2 is fixedly connected with the shell 1 through a first connecting piece 4 (such as a screw or a bolt) penetrating through the first connecting hole 2c and the second connecting hole 1 b.

Even if a small amount of moisture enters through the first connecting hole 2c and the second connecting hole 1b, the moisture is guided to the inner cavity of the housing 2 instead of directly dripping on the circuit board assembly 231 due to the lower hole edge of the first connecting hole 2c, so as to prevent the moisture from penetrating from the first connecting hole 2c and the second connecting hole 1b and contacting the circuit board assembly 231.

So configured, if there is water leakage within the enclosure 1, it is directed to the interior of the housing 2 and is discharged through a predetermined drain path, rather than accumulating around the circuit board assembly 231, thereby greatly reducing the risk of short circuits and other electrical faults. Not only realizing high-efficient and stable electric connection, but also enhancing the waterproof performance.

Further, in order to optimize space utilization and improve heat dissipation efficiency, referring to fig. 6 and 7, in the present embodiment, the circuit board assembly 231 includes a first circuit board 2311 and a second circuit board 2312 disposed at intervals in the up-down direction, the first circuit board 2311 is connected with the housing 2 through a first connection structure 51, and the second circuit board 2312 is connected with the first circuit board 2311 through a second connection structure 52.

It will be appreciated that the first circuit board 2311 is directly connected to the housing 2 through the first connection structure 51. The first connection structure 51 may be mechanically fixed, such as screws, snaps, etc., or may be combined with a heat conductive material to enhance heat conduction. The first connection structure 51 not only provides physical support, but also helps to dissipate heat generated during operation of the first circuit board 2311.

The second connection structure 52 is used to fix the second circuit board 2312 to the first circuit board 2311. The second connection structure 52 may be one or more support posts, slots, or other forms of connection.

It should also be noted that, in view of the electrical connection requirements, the second connection structure 52 may be provided with conductive paths, so that efficient electrical communication between the first circuit board 2311 and the second circuit board 2312 is enabled. In addition, the second connection structure 52 may also perform a certain isolation function to prevent electromagnetic interference (EMI), thereby ensuring the purity of signals and the stability of the system.

By arranging the first circuit board 2311 and the second circuit board 2312 at intervals in the up-down direction, the space inside the housing 2 can be effectively utilized, so that the overall design is more compact, and the first connection structure 51 and the second connection structure 52 are correspondingly arranged, so that the effective layout and stable connection of the circuit boards inside the motor 100 are realized, the space utilization and the heat dissipation performance are optimized, and the electrical performance and maintainability of the system are improved.

Specifically, referring to fig. 7, in order to firmly fix the first circuit board 2311 in the housing 2, in a specific embodiment, the first connection structure 51 includes a third connection hole formed on the first circuit board 2311 and a fourth connection hole formed on the housing 2, and the first circuit board 2311 is fixed to the housing 2 by a second connection member sequentially penetrating through the third connection hole and the fourth connection hole.

It can be appreciated that the third connection holes may be provided on the first circuit board 2311, and the third connection holes may be provided singly or in plurality, and the positions and the number of the third connection holes are determined according to actual requirements, so as to ensure that the first circuit board 2311 can be uniformly stressed and firmly installed.

Accordingly, the fourth connection hole is provided on the housing 2. The fourth connection hole corresponds to the third connection hole on the first circuit board 2311 in position so as to be fixed using the second connection member.

The first circuit board 2311 is tightly connected to the housing 2 by a second connection member (e.g., a screw or bolt, etc.) sequentially penetrating the third connection hole and the fourth connection hole. Not only provides good physical support, but also ensures good electrical grounding performance, and contributes to improving the stability and safety of the whole system.

In order to achieve the stable connection between the first circuit board 2311 and the second circuit board 2312, referring to fig. 6, in a specific embodiment, the second connection structure 52 includes a clamping portion and a mating portion that are separately disposed on the first circuit board 2311 and the second circuit board 2312, and the first circuit board 2311 and the second circuit board 2312 are clamped and connected by the clamping portion and the mating portion.

The first circuit board 2311 and the second circuit board 2312 are respectively provided with the clamping portion and the mating portion. The holding part can be in the form of a protrusion or a hook, and the matching part is a corresponding groove or hole. The first circuit board 2311 and the second circuit board 2312 can be precisely aligned and firmly connected through the clamping portion and the matching portion.

Through the mode of clamping connection, the assembly can be rapidly completed without additional tools, and the production efficiency is greatly improved. If maintenance or replacement is required, related parts can be easily detached only by releasing the second connecting piece or separating the clamping part and the matching part, so that later maintenance is facilitated.

Further, referring to fig. 4, in the present embodiment, the circuit board assembly 231 further includes a spacer 6 disposed on the first circuit board 2311 or the second circuit board 2312, and the spacer 6 is located between the first circuit board 2311 and the second circuit board 2312.

The spacer 6 may be a support post fixed to the first circuit board 2311 or a similar structure mounted on the second circuit board 2312.

The spacer 6 may be made of an insulating material to prevent the risk of short circuits between the circuit boards. Meanwhile, considering the heat dissipation requirement, a material having good heat conductivity, such as some engineering plastics or metals (the surface of which is subjected to an insulating treatment), may be selected.

The spacer 6 provides a stable mechanical support for the upper and lower circuit boards, and ensures structural stability of the entire circuit board assembly 231. By reasonably arranging the spacing parts 6, an air circulation channel can be formed between the first circuit board 2311 and the second circuit board 2312, which is helpful for effective heat dissipation and avoids local overheating.

Meanwhile, a space is formed between the first circuit board 2311 and the second circuit board 2312, so that not only can a heat dissipation effect be improved, but also electromagnetic interference possibly generated between the circuit boards can be reduced, and quality of signal transmission is improved. The wiring is more flexible, the possibility of line crossing is reduced, and subsequent checking and maintenance work is facilitated.

In the assembly process, the spacer 6 is first fixed to one circuit board (e.g., the first circuit board 2311), then another circuit board (e.g., the second circuit board 2312) is placed on the spacer 6, and the final assembly is completed using the second connection structure 52 (e.g., the clamping portion and the mating portion). This ensures accurate alignment and stable connection between the two circuit boards.

Of course, the spacer 6 may be formed on the second connection structure 52, and the second connection structure 52 may be capable of achieving a snap-fit fixation and limiting a spacing distance between the first circuit boards 2311 of the second circuit board 2312.

The height of the spacing part 6 needs to be adjusted according to the actual application requirement, so that the heat dissipation requirement is met, and space limitation is considered. Typically, the height of the spacer 6 will be between a few millimeters and a few tens of millimeters, the specific value depending on the specific layout of the circuit board and the component height.

By disposing the spacer 6 on the first circuit board 2311 or the second circuit board 2312, the circuit board assembly 231 of the motor 100 not only realizes efficient heat dissipation management and electromagnetic compatibility, but also improves stability and reliability of the overall structure, and is suitable for various application scenarios.

Further, as the circuit board assembly 231 is provided with the power module 233 that generates heat, in order to timely dissipate the heat of the power module 233, referring to fig. 6, 7 and 10, in this embodiment, the circuit board assembly 231 further includes the power module 233 disposed below the top of the housing 2, and a heat dissipation structure 22 is disposed at a region of the top of the housing 2 corresponding to the power module 233, where the heat dissipation structure 22 is in a heat exchange relationship with the power module 233.

The power module 233 is disposed below the top of the housing 2 to improve space utilization efficiency, facilitate maintenance, and optimize a heat dissipation path.

The power module 233 contains high power electronic components such as IGBTs (insulated gate bipolar transistors), MOSFETs (metal oxide semiconductor field effect transistors), etc., which are responsible for handling high currents and voltages and are the core part of the motor control system.

The heat dissipation structure 22 is disposed at the top of the housing 2 in a region corresponding to the power module 233, so that the heat dissipation structure directly faces the power module 233, and therefore, heat exchange efficiency can be maximized, and effective heat dissipation of the power module 233 during operation is ensured.

It should be noted that the heat dissipation structure 22 may be a heat dissipation fin, and may be a high-efficiency aluminum or copper heat dissipation fin to increase the surface area for improving the heat conduction efficiency, and the heat dissipation structure 22 may be a heat dissipation fan to force air to flow and accelerate heat dissipation.

It should be noted that, the heat exchange relationship refers to that direct or indirect heat exchange can be generated between the heat dissipation structure 22 and the power module 233. That is, the power module 233 is in direct contact with the heat dissipation structure 22, and the generated heat can be directly transferred to the heat dissipation structure 22, and then the heat is dissipated to the external environment by natural convection or forced convection. Or a heat-conducting silicone grease or other heat-conducting medium is arranged between the power module 233 and the heat dissipation structure 22, so as to reduce contact thermal resistance.

In this way, by directly arranging the heat dissipation structure 22 opposite to the power module 233, the heat dissipation effect is enhanced, the risk of faults caused by overheating is reduced, and the system stability is improved. By providing the power module 233 under the top of the housing 2 and configuring the heat dissipating structure 22 in its corresponding area, efficient thermal management and compact spatial layout is achieved.

Specifically, with continued reference to fig. 10, in one embodiment, the heat dissipating structure 22 includes a plurality of ribs 221 protruding from the top surface of the housing 2.

The ribs 221 are directly located at the top of the housing 2 in the area corresponding to the power module 233, so as to maximize heat exchange efficiency. The ribs 221 may be provided separately from the housing 2 or integrally therewith.

It should be noted that, the ribs 221 may be in a straight line shape, a wave shape or other geometric shapes, and an optimal form is selected according to the actual heat dissipation requirement. The plurality of ribs 221 may be arranged in parallel or staggered to increase the air flow path and improve the heat dissipation effect.

The ribs 221 may be made of a material having good thermal conductivity, such as an aluminum alloy or a copper alloy, to ensure that heat can be rapidly conducted from the power module 233 to the ribs 221 and further dissipated to the environment.

The height and spacing of the ribs 221 ensures sufficient surface area to enhance heat exchange, as well as compactness and aesthetics of the overall structure.

By arranging the plurality of ribs 221 at the top of the housing 2, the effective heat dissipation area is increased, so that heat can be dissipated to the outside air more rapidly, the heat dissipation capacity is enhanced, and the risk of faults caused by overheating can be reduced. In addition, the ribs 221 use the space at the top of the housing 2, so that no extra space is occupied, thereby saving space and not affecting the layout of other components. Compared with a complex cooling fan or liquid cooling system, the convex rib 221 has simple structure and low cost, is easy to manufacture and maintain, and is suitable for mass production and application.

Specifically, in some embodiments, the housing 2 is provided as a metal housing 2.

The metal housing 2 may be made of aluminum, aluminum alloy or steel having good thermal conductivity and mechanical strength. Because the metal has good heat conductivity, the heat generated in the metal can be effectively conducted to the outside air, so that the working temperature of the electronic element in the metal is within a safe range. The metal housing 2 not only provides physical protection, but also serves as part of the heat dissipation path, helping the internal electronics dissipate heat.

To ensure the safety and stability of the cable connection, referring to fig. 4, in some embodiments, the electrical control structure 20 further includes a fixing structure 25 disposed on the circuit board assembly 231 for fixing the cable.

The fixing structure 25 may be directly disposed on the circuit board assembly 231, for example, may be a snap-fit, clamping-type, or screw-type structure. The fixing structure 25 is disposed at a critical location where the cable needs to be fixed, such as near the electrical terminals 232 or in a dense wiring area.

By using the fixing structure 25, the cable loosening phenomenon caused by vibration or other external forces can be effectively avoided, and the reliability of electrical connection is ensured. And through fixed knot constructs 25 can arrange in order and restraint the cable for the wiring is more orderly, reduces the possibility that the circuit is crossed, is convenient for follow-up inspection and maintenance work, prevents spark or short circuit accident because of contacting failure causes, has promoted the security of system.

The utility model also provides a refrigeration device, which comprises a heat exchanger and a motor 100, wherein the specific structure of the motor 100 refers to the embodiment, and as the refrigeration device adopts all the technical schemes of all the embodiments, at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.

Specifically, in a specific embodiment, the refrigeration device includes an air conditioner. The air conditioner includes an indoor unit and an outdoor unit, and the motor 100 is applied to a fan motor of an air conditioning system, such as a condenser fan and an evaporator fan.

The foregoing description is only exemplary embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. An electric machine, comprising:

2. The motor of claim 1, further comprising a glue seal disposed within the housing, the glue seal being disposed at an upper end of the housing, and a glue-filled surface of a lower end surface of the glue seal protruding or being flush with a lower side of the circuit board assembly to glue seal the circuit board assembly.

3. The motor of claim 1, wherein the communication portion includes a side wall portion surrounding the annular side portion of the housing to form the communication passage, and an inner side of the side wall portion has a guide slope spaced from and disposed opposite to the annular side portion, the guide slope being inclined downward from a top of the housing toward a direction approaching the annular side portion.

4. The motor of claim 1, wherein a first connecting hole is formed in the top of the housing, a second connecting hole is formed in the casing, and the housing is fixed to the casing through a first connecting piece penetrating through the first connecting hole and the second connecting hole;

5. The motor of claim 1, wherein the circuit board assembly includes a first circuit board and a second circuit board disposed at intervals in an up-down direction, the first circuit board being connected to the housing by a first connection structure, the second circuit board being connected to the first circuit board by a second connection structure.

6. The motor of claim 5, wherein the first connection structure includes a third connection hole provided on the first circuit board and a fourth connection hole provided on the housing, the first circuit board being fixed to the housing by a second connection member sequentially penetrating the third connection hole and the fourth connection hole, and/or,

7. The motor of claim 5, wherein the circuit board assembly further comprises a spacer disposed on the first circuit board or the second circuit board, the spacer being located between the first circuit board and the second circuit board.

8. The motor of claim 1, wherein the circuit board assembly further comprises a power module disposed below a top of the housing;

9. The motor of claim 8, wherein the heat dissipating structure comprises a plurality of ribs protruding from an upper surface of the top of the housing.

10. The motor according to claim 1, wherein the housing is provided as a metal housing and/or,

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

12. The refrigeration appliance of claim 11 wherein the refrigeration appliance includes an air conditioner.