Motor and refrigeration equipment

Abstract

The utility model discloses a motor and refrigeration equipment, relates to motor technical field, the motor comprises a motor body and an electric control structure, the bottom of the casing is provided with a wire passing hole, the electric control structure comprises a housing, and an electric control device and a connecting wire which are arranged in the housing, the top of the housing extends downwards to form a communication part, and the connecting wire is connected with the electric control device. A communication channel of the communication part is communicated with a wire passing hole and an inner cavity of the shell, one end of a power connection wire penetrates through the communication channel and the wire passing hole to be connected with a winding of the stator, the other end of the power connection wire is connected with a power connection terminal, and therefore the power connection wire can be wired in the machine shell and the shell, and when water leaks in the machine shell, water can enter the communication channel through the wire passing hole; and then the flow flows to the inner cavity of the shell without touching the circuit board assembly. The position of the lower end of the communication part protrudes out of or is flush with the lower side face of the circuit board assembly, a drainage path is optimized, leaked water can be directly drained through a water passing hole in the bottom of the shell, and therefore the risk that water accumulates in the electric control device to cause damage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor and a refrigeration device. Background Technology

[0002] In the axial spatial layout of the brushless motor of the ECM commercial air conditioner outdoor unit, the motor body and the electronic control drive device adopt a separate housing protection design. The UVW three-phase power supply line adopts the "external lead-out detour routing" scheme: after the line is led out from the motor stator winding, it first passes through the motor protective housing, then passes through the independent sealed cavity of the electronic control drive device, and finally achieves physical connection with the power connection terminal of the circuit board assembly.

[0003] By constructing a double-shell isolation mechanism, the migration path of potential water leakage from the motor cavity to the electronic control unit is effectively blocked. However, the resulting exposed wiring raises two technical challenges: 1) Exposed wiring harnesses require additional waterproof sheaths or sealant treatment, increasing protection costs; 2) Wiring across the shell creates redundant bending paths, resulting in messy wiring on the equipment's appearance, affecting the aesthetics of the industrial design and potentially causing stress fatigue risks to the wires. Utility Model Content

[0004] The main purpose of this utility model is to provide a motor and a refrigeration device that can both prevent water leakage from the motor cavity to the circuit board assembly and prevent exposed wires from affecting the aesthetics of the motor.

[0005] To achieve the above objectives, the motor proposed in this utility model includes:

[0006] The motor body includes a housing and a stator disposed within the housing, wherein the bottom of the housing is provided with wire-passing holes; and,

[0007] An electrical control structure includes a housing, an electrical control device and wiring wires disposed within the housing, the electrical control device including a circuit board assembly and a power terminal electrically connected to the circuit board assembly, and the top of the housing being mounted on the bottom of the casing;

[0008] The top of the outer casing extends downward to form a connecting portion, which has a connecting channel connecting the wire hole and the inner cavity of the outer casing. The connecting portion is located on one side of the circuit board assembly, and the lower end of the connecting portion protrudes or is flush with the lower side of the circuit board assembly. One end of the connecting wire passes through the connecting channel and the wire hole and is connected to the winding of the stator, and the other end is connected to the power terminal. The bottom of the outer casing is also provided with a water passage hole.

[0009] In one embodiment, the motor further includes an encapsulation structure disposed within the housing, the encapsulation structure being located at the upper end of the housing, and the potting surface of the lower end face of the encapsulation structure protruding or flush with the lower side surface of the circuit board assembly to encapsulate the circuit board assembly.

[0010] In one embodiment, the connecting portion includes a side enclosure portion that surrounds the annular side portion of the housing to form the connecting channel. The inner side of the side enclosure portion has a guide slope that is spaced apart from and opposite to the annular side portion. The guide slope is inclined downward from the top of the housing towards the annular side portion.

[0011] In one embodiment, the top of the outer casing is provided with a first connection hole, and the housing is provided with a second connection hole. The outer casing is fixed to the housing by a first connector passing through the first connection hole and the second connection hole.

[0012] The lower edge of the first connecting hole is flush with or lower than the circuit board assembly.

[0013] In one embodiment, the circuit board assembly includes a first circuit board and a second circuit board spaced apart in a vertical direction. The first circuit board is connected to the housing via a first connection structure, and the second circuit board is connected to the first circuit board via a second connection structure.

[0014] In one embodiment, the first connection structure includes a third connection hole on the first circuit board and a fourth connection hole on the housing, wherein the first circuit board is fixed to the housing by a second connector that passes through the third connection hole and the fourth connection hole in sequence; and / or,

[0015] The second connection structure includes a retaining part and a mating part respectively disposed on the first circuit board and the second circuit board, and the first circuit board and the second circuit board are connected by the retaining part and the mating part.

[0016] In one embodiment, the circuit board assembly further includes 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.

[0017] In one embodiment, the circuit board assembly further includes a power module disposed below the top of the housing;

[0018] A heat dissipation structure is provided on the top of the housing corresponding to the area of ​​the power module, and the heat dissipation structure is in a heat exchange relationship with the power module.

[0019] In one embodiment, the heat dissipation structure includes a plurality of ribs protruding from the top upper surface of the housing.

[0020] In one embodiment, the housing is configured as a metal housing; and / or,

[0021] The electrical control structure also includes a fixing structure disposed on the circuit board assembly for fixing the cables.

[0022] This utility model also proposes a refrigeration device, which includes a motor, the motor comprising:

[0023] The motor body includes a housing and a stator disposed within the housing, wherein the bottom of the housing is provided with wire-passing holes; and,

[0024] An electrical control structure includes a housing, an electrical control device and wiring wires disposed within the housing, the electrical control device including a circuit board assembly and a power terminal electrically connected to the circuit board assembly, and the top of the housing being mounted on the bottom of the casing;

[0025] The top of the outer casing extends downward to form a connecting portion, which has a connecting channel connecting the wire hole and the inner cavity of the outer casing. The connecting portion is located on one side of the circuit board assembly, and the lower end of the connecting portion protrudes or is flush with the lower side of the circuit board assembly. One end of the connecting wire passes through the connecting channel and the wire hole and is connected to the winding of the stator, and the other end is connected to the power terminal. The bottom of the outer casing is also provided with a water passage hole.

[0026] In one embodiment, the refrigeration equipment includes an air conditioner.

[0027] In this invention, a connecting portion extends downward from the top of the outer casing. The connecting channel of this portion connects the wire-passing hole and the inner cavity of the outer casing. One end of the connecting wire passes through the connecting channel and the wire-passing hole to connect to the stator winding, and the other end connects to the electrical terminal. This allows the connecting wire to be routed inside the casing. When water leaks inside the casing, the water can enter the connecting channel through the wire-passing hole and then flow into the inner cavity of the outer casing without touching the circuit board assembly. Because the lower end of the connecting portion protrudes or is flush with the lower side of the circuit board assembly, the drainage path is optimized. Leaking water can be directly discharged through the water-passing hole at the bottom of the outer casing, thus avoiding the risk of water accumulating inside the electronic control device and causing damage. This provides a motor that can both prevent water leakage from the motor cavity to the circuit board assembly and avoid exposed connecting wires affecting aesthetics. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figures 1 to 3 A schematic diagram of the structure of an embodiment of the motor provided by this utility model;

[0030] Figure 4 for Figure 1 A schematic diagram of the explosion of the motor;

[0031] Figure 5 for Figure 1 A side view of the motor in the diagram;

[0032] Figure 6 and Figure 7 for Figure 5 A cross-sectional schematic diagram of AA in the middle;

[0033] Figure 8 and Figure 9 for Figure 1 A partial structural diagram of the central electronic control structure;

[0034] Figure 10 for Figure 1 A schematic diagram of the electronic control structure from another perspective.

[0035] Explanation of icon numbers:

[0036] 100. Motor; 10. Motor body; 1. Housing; 1a. Wire hole; 1b. Second connection hole; 20. Electrical control structure; 2. Outer shell; 21. Connecting part; 21a. Connecting channel; 211. Guide slope; 2b. Water hole; 2c. First connection hole; 22. Heat dissipation structure; 221. Rib; 23. Electrical control device; 231. Circuit board assembly; 2311. First circuit board; 2312. Second circuit board; 232. Power terminal; 233. Power module; 24. Connecting wire; 25. Fixing structure; 30. Encapsulation structure; 31. Potting surface; 4. First connector; 51. First connection structure; 52. Second connection structure; 6. Spacing part.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] This utility model proposes a motor that can prevent water leakage from the motor cavity to the circuit board assembly and also prevent exposed wires from affecting the aesthetics.

[0042] Please see Figure 1 , Figures 5 to 7In one embodiment of this utility model, the motor 100 includes a motor body 10 and an electrical control structure 20. The motor body 10 includes a housing 1 and a stator disposed within the housing 1. The bottom of the housing 1 is provided with a wire hole 1a. The electrical control structure 20 includes a housing 2 and an electrical control device 23 and a connecting wire 24 disposed within the housing 2. The electrical control device 23 includes a circuit board assembly 231 and a power terminal 232 electrically connected to the circuit board assembly 231. The top of the housing 2 is mounted on the bottom of the housing 1. The top of the outer casing 2 extends downward to form a connecting portion 21. The connecting portion 21 is provided with a connecting channel 21a connecting the wire hole 1a and the inner cavity of the outer casing 2. The connecting portion 21 is located on one side of the circuit board assembly 231, and the lower end of the connecting portion 21 protrudes or is flush with the lower side of the circuit board assembly 231. One end of the connecting wire 24 passes through the connecting channel 21a and the wire hole 1a and is connected to the winding of the stator. The other end is connected to the power terminal 232. The bottom of the outer casing 2 is also provided with a water hole 2b.

[0043] It is understood that the motor body 10 includes the housing 1, and a rotor and a stator are disposed inside the housing 1. For electrical connection, a wire passage hole 1a is provided at the bottom of the housing 1. It should be noted that the wire passage hole 1a is not only used for electrical wiring but also has a drainage function, guiding any water that may enter the housing 1 outwards.

[0044] The electrical control structure 20 comprises the housing 2, the electrical control device 23 installed within the housing 2, and the connecting wire 24. The electrical control device 23 includes the circuit board assembly 231 and the power terminal 232 electrically connected to the circuit board assembly 231. The top of the housing 2 is mounted on the bottom of the casing 1, and extends downward to form the connecting portion 21. The connecting portion 21 has a connecting channel 21a, which connects the wire hole 1a and the inner cavity of the housing 2, allowing the connecting wire 24 to run inside the casing 1 and the housing 2, connecting the stator windings and the power terminal 232 of the electrical control device 23.

[0045] The connecting portion 21 is located on 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 configured to be flush with the lower side of the circuit board assembly 231. Even if moisture flows in through the wire hole 1a, it will not contact the circuit board assembly 231, but will be discharged directly from the water passage hole 2b at the bottom of the housing 2. This configuration can effectively prevent short circuits or other electrical faults caused by moisture.

[0046] One end of the connecting wire 24 passes through the connecting channel 21a and the wire hole 1a and connects to the winding of the stator, while the other end connects to the power terminal 232 of the electronic control device 23. This allows the connecting wire 24 to be routed inside the housing 1 and the outer casing 2, which not only simplifies the installation process but also ensures that the wiring inside the motor 100 is neat and orderly, reducing the possibility of external interference.

[0047] In the technical solution of this utility model, by extending the connecting portion 21 downward from the top of the outer casing 2, the connecting channel 21a of the connecting portion 21 connects the wire hole 1a and the inner cavity of the outer casing 2. One end of the connecting wire 24 is passed through the connecting channel 21a and the wire hole 1a and connected to the winding of the stator, and the other end is connected to the power terminal 232. This allows the connecting wire 24 to be routed inside the housing 1 and the outer casing 2. When water leaks inside the housing 1, the water can enter the connecting channel 21a through the wire hole 1a and then flow to the inner cavity of the outer casing 2 without touching the circuit board assembly 231. Because the lower end of the connecting part 21 is positioned to protrude from or be flush with the lower side of the circuit board assembly 231, the drainage path is optimized. Leaking water can be discharged directly through the water passage hole 2b at the bottom of the housing 2, thereby avoiding the risk of water accumulating inside the electronic control device 23 and causing damage. This provides a motor 100 that can both prevent water leakage from the motor cavity to the circuit board assembly 231 and prevent the exposed wiring 24 from affecting the aesthetics.

[0048] For further information, please refer to [link / reference]. Figure 7 In this embodiment, the motor 100 further includes an encapsulation structure 30 disposed within the housing 2. The encapsulation structure 30 is located at the upper end of the housing 2, and the potting surface 31 of the lower end face of the encapsulation structure 30 protrudes or is flush with the lower side of the circuit board assembly 231 to encapsulate the circuit board assembly 231.

[0049] The encapsulation structure 30 is located at the upper part of the inside of the housing 2. Its main function is to completely seal the circuit board assembly 231 through the potting process to provide an additional protective layer.

[0050] The encapsulation structure 30 is located at the upper end of the housing 2, directly covering the circuit board assembly 231. The lower end face of the encapsulation structure 30, i.e., the potting surface 31, is designed to protrude or be flush with the lower side of the circuit board assembly 231, because the encapsulation structure 30 can provide a physical barrier to ensure that even if moisture or other impurities enter the interior of the housing 2, they cannot contact the circuit board assembly 231.

[0051] It should be noted that the encapsulation structure 30 is formed through a potting process. After the circuit board assembly 231 is installed inside the housing 2 and then inverted, the potting process allows the potting compound to completely submerge the circuit board assembly 231, forming a uniform and seamless sealing layer around it. The connecting portion 21 protrudes from or is flush with the lower side of the circuit board assembly 231. The height of the potting surface 31 is set not exceeding the end face of the connecting portion 21 to prevent the potting compound from flowing into the connecting channel 21a. The solidified potting compound is not only waterproof and dustproof but also has a certain cushioning effect, helping to absorb vibrations and further protecting the circuit board assembly 231 from mechanical damage.

[0052] With this configuration, thanks to the structural features of the connecting portion 21 and the encapsulation structure 30, moisture entering the outer casing 2 is directly discharged through the water passage 2b without affecting the function of the circuit board assembly 231. The encapsulation structure 30 prevents moisture, dust, and other contaminants from corroding the circuit board assembly 231.

[0053] Specifically, please refer to Figure 8 and Figure 10 In one embodiment, the connecting portion 21 includes a side enclosure portion that surrounds the annular side portion of the outer shell 2 to form the connecting channel 21a. The inner side of the side enclosure portion has a guide slope 211 that is spaced apart from the annular side portion and arranged opposite to it. The guide slope 211 is inclined downward from the top of the outer shell 2 toward the direction close to the annular side portion.

[0054] The connecting portion 21 includes the side enclosure portion, which together with the annular side portion of the outer shell 2 forms the connecting channel 21a.

[0055] The inner side of the side enclosure has a guide slope 211 that slopes downward from the top of the outer casing 2 and gradually approaches the annular side. The guide slope 211 can guide the water entering the communication channel 21a to flow toward the inner cavity of the outer casing 2, rather than lingering near the motor body 10 or the circuit board assembly 231.

[0056] Thus, by setting the guide slope 211, even if moisture enters the connecting channel 21a through the wire hole 1a, it will be quickly guided to the inner cavity of the outer shell 2 and discharged through the water hole 2b, thereby reducing the risk of moisture damaging the circuit board assembly 231.

[0057] For further information, please refer to [link / reference]. Figure 7In order to enable the motor body 10 and the electronic control structure 20 to be fixedly connected, in this embodiment, the top of the outer shell 2 is provided with a first connection hole 2c, and the housing 1 is provided with a second connection hole 1b. The outer shell 2 is fixed to the housing 1 by a first connector 4 passing through the first connection hole 2c and the second connection hole 1b. The lower edge of the first connection hole 2c is flush with or lower than the circuit board assembly 231.

[0058] The first connecting hole 2c is provided on the top of the outer shell 2, and correspondingly, the second connecting hole 1b is provided on the housing 1. The first connecting hole 2c and the second connecting hole 1b can be riveting holes or threaded holes. The outer shell 2 is fixedly connected to the housing 1 by a first connecting piece 4 (such as a screw or bolt) passing through the first connecting hole 2c and the second connecting hole 1b.

[0059] The lower edge of the first connecting hole 2c is flush with or lower than the setting position of the circuit board assembly 231. Even if a small amount of water enters through the first connecting hole 2c and the second connecting hole 1b, the water will be guided to the inner cavity of the outer shell 2 rather than dripping directly onto the circuit board assembly 231 because the lower edge of the first connecting hole 2c is low. This prevents water from seeping into and contacting the circuit board assembly 231 from the first connecting hole 2c and the second connecting hole 1b.

[0060] With this design, if water leaks into the housing 1, it will be directed to the inner cavity of the outer casing 2 and discharged through a pre-defined drainage path, rather than accumulating around the circuit board assembly 231, thereby greatly reducing the risk of short circuits and other electrical faults. This not only achieves efficient and stable electrical connections but also enhances waterproof performance.

[0061] Furthermore, due to the limited space in the outer casing 2, in order to optimize space utilization and improve heat dissipation efficiency, please refer to... Figure 6 and Figure 7 In this embodiment, the circuit board assembly 231 includes a first circuit board 2311 and a second circuit board 2312 spaced apart in the vertical direction. The first circuit board 2311 is connected to the housing 2 through a first connection structure 51, and the second circuit board 2312 is connected to the first circuit board 2311 through a second connection structure 52.

[0062] It is understood that the first circuit board 2311 is directly connected to the outer casing 2 via the first connecting structure 51. The first connecting structure 51 can be a mechanical fixing method such as screws or clips, or it can be combined with thermally conductive materials to enhance heat conduction. The first connecting structure 51 not only provides physical support, but also helps dissipate the heat generated by the first circuit board 2311 during operation.

[0063] The second connection structure 52 is used to fix the second circuit board 2312 onto the first circuit board 2311. The second connection structure 52 may be one or more support pillars, slots, or other forms of connectors.

[0064] It should also be noted that, considering the needs of electrical connection, the second connection structure 52 may be provided with a conductive path, enabling effective electrical communication between the first circuit board 2311 and the second circuit board 2312. Furthermore, the second connection structure 52 can also provide a certain degree of isolation to prevent electromagnetic interference (EMI), thereby ensuring signal purity and system stability.

[0065] By arranging the first circuit board 2311 and the second circuit board 2312 at intervals in the vertical direction, the space inside the housing 2 can be effectively utilized, making the overall design more compact. Correspondingly, the first connection structure 51 and the second connection structure 52 are arranged to ensure the effective layout and stable connection of the circuit boards inside the motor 100, which not only optimizes space utilization and heat dissipation performance, but also improves the electrical performance and maintainability of the system.

[0066] For details, please continue reading Figure 7 In order to securely fix the first circuit board 2311 inside the housing 2, in a specific embodiment, the first connection structure 51 includes a third connection hole provided on the first circuit board 2311 and a fourth connection hole provided on the housing 2. The first circuit board 2311 is fixed to the housing 2 by a second connector that passes through the third connection hole and the fourth connection hole in sequence.

[0067] It is understood that the third connecting hole is provided on the first circuit board 2311. The third connecting hole may be single or multiple. The position and number of the third connecting hole are determined according to actual needs to ensure that the first circuit board 2311 can be evenly stressed and firmly installed.

[0068] Accordingly, the fourth connection hole is provided on the outer casing 2. The fourth connection hole corresponds to the third connection hole on the first circuit board 2311, so as to facilitate fixing using the second connector.

[0069] The first circuit board 2311 is tightly connected to the housing 2 by a second connector (e.g., screw or bolt) sequentially inserted into the third and fourth connection holes. This not only provides good physical support but also ensures good electrical grounding performance, contributing to improved stability and safety of the entire system.

[0070] To achieve a stable connection between the first circuit board 2311 and the second circuit board 2312, please refer to... Figure 6 In one specific embodiment, the second connection structure 52 includes a retaining part and a mating part respectively 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 connected by the retaining part and the mating part.

[0071] The first circuit board 2311 and the second circuit board 2312 are respectively provided with the retaining part and the mating part. The retaining part can be in the form of a protrusion or a hook, while the mating part is a corresponding groove or hole. The first circuit board 2311 and the second circuit board 2312 can achieve precise alignment and stable connection through the retaining part and the mating part.

[0072] The snap-fit ​​connection allows for quick assembly without additional tools, significantly improving production efficiency. If repair or replacement is needed, the relevant components can be easily disassembled by simply releasing the second connector or separating the snap-fit ​​part from the mating part, facilitating future maintenance.

[0073] Further, please refer to Figure 4 In this embodiment, the circuit board assembly 231 further includes a spacer 6 disposed on the first circuit board 2311 or the second circuit board 2312, the spacer 6 being located between the first circuit board 2311 and the second circuit board 2312.

[0074] It should be noted that the spacer 6 can be a support column fixed on the first circuit board 2311, or a similar structure installed on the second circuit board 2312.

[0075] The spacer 6 can be made of insulating material to prevent the risk of short circuits between circuit boards. Meanwhile, considering heat dissipation requirements, materials with good thermal conductivity, such as certain engineering plastics or metals (with an insulating surface treatment), can be selected.

[0076] The spacer 6 provides stable mechanical support for the upper and lower circuit boards, ensuring the structural stability of the entire circuit board assembly 231. By properly arranging the spacer 6, an air circulation channel can be formed between the first circuit board 2311 and the second circuit board 2312, which helps to effectively dissipate heat and avoid local overheating.

[0077] Meanwhile, the spacing between the first circuit board 2311 and the second circuit board 2312 not only improves heat dissipation but also reduces electromagnetic interference that may occur between the circuit boards, thereby improving signal transmission quality. It also makes wiring more flexible, reduces the possibility of line crossings, and facilitates subsequent inspection and maintenance.

[0078] During assembly, the spacer 6 is first fixed to a circuit board (such as the first circuit board 2311), and then another circuit board (such as the second circuit board 2312) is placed on the spacer 6. The final assembly is completed using the second connecting structure 52 (such as the retaining part and the mating part). This ensures precise alignment and stable connection between the two circuit boards.

[0079] Of course, the spacing portion 6 may be formed on the second connecting structure 52, which can both achieve snap-fit ​​fixation and limit the spacing distance between the first circuit board 2311 of the second circuit board 2312.

[0080] The height of the spacer 6 needs to be adjusted according to actual application requirements, to meet heat dissipation requirements and also to consider space constraints. Typically, the height of the spacer 6 is between a few millimeters and a dozen millimeters, with the specific value depending on the specific layout of the circuit board and the height of the components.

[0081] By providing the spacing portion 6 on the first circuit board 2311 or the second circuit board 2312, the circuit board assembly 231 of the motor 100 not only achieves efficient heat dissipation management and electromagnetic compatibility, but also improves the stability and reliability of the overall structure, making it suitable for various application scenarios.

[0082] Furthermore, since a power module 233 that generates heat will be installed on the circuit board assembly 231, in order to dissipate the heat from the power module 233 in a timely manner, please refer to... Figure 6 , Figure 7 and Figure 10 In this embodiment, the circuit board assembly 231 further includes a power module 233 disposed below the top of the housing 2; a heat dissipation structure 22 is provided on the top of the housing 2 corresponding to the area of ​​the power module 233, and the heat dissipation structure 22 and the power module 233 are in a heat exchange relationship.

[0083] The power module 233 is located below the top of the housing 2 to improve space utilization efficiency, facilitate maintenance, and optimize the heat dissipation path.

[0084] The power module 233 contains high-power electronic components, such as IGBTs (Insulated Gate Bipolar Transistors) and MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors). These components are responsible for handling high current and voltage and are the core part of the motor control system.

[0085] The heat dissipation structure 22 is provided on the top of the outer casing 2 in the area corresponding to the location of the power module 233, so that it directly faces the power module 233, which can maximize the heat exchange efficiency and ensure that the power module 233 can effectively dissipate heat during operation.

[0086] It should be noted that the heat dissipation structure 22 can be a heat sink, which can be made of high-efficiency aluminum or copper to increase the surface area and improve the heat conduction efficiency; the heat dissipation structure 22 can also be a cooling fan to force airflow and accelerate heat dissipation.

[0087] It should be noted that heat exchange relationship refers to the ability to generate direct or indirect heat exchange 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 dissipated to the external environment through natural convection or forced convection. Alternatively, thermal grease or other thermally conductive media can be applied between the power module 233 and the heat dissipation structure 22 to reduce contact thermal resistance.

[0088] Thus, by directly facing the power module 233 with the heat dissipation structure 22, the heat dissipation effect is enhanced, the risk of failure due to overheating is reduced, and the system stability is improved. By placing the power module 233 below the top of the housing 2 and configuring the heat dissipation structure 22 in its corresponding area, efficient thermal management and a compact space layout are achieved.

[0089] For details, please continue reading Figure 10 In one specific embodiment, the heat dissipation structure 22 includes a plurality of protruding ribs 221 protruding from the top upper surface of the housing 2.

[0090] The protruding rib 221 is located directly on the top of the outer casing 2 in the area corresponding to the power module 233, in order to maximize heat exchange efficiency. The protruding rib 221 can be separately set from the outer casing 2 or it can be integrated into the outer casing 2.

[0091] It should be noted that the raised ribs 221 can be straight, wavy, or other geometric shapes, and the optimal form should be selected according to the actual heat dissipation requirements. The multiple raised ribs 221 can be arranged in parallel or staggered to increase the airflow path and improve the heat dissipation effect.

[0092] The rib 221 can be made of a material with good thermal conductivity, such as aluminum alloy or copper alloy, to ensure that heat can be quickly conducted from the power module 233 to the rib 221 and further dissipated into the environment.

[0093] The height and spacing of the ribs 221 are designed to ensure sufficient surface area to enhance heat exchange, while also considering the compactness and aesthetics of the overall structure.

[0094] By providing the plurality of raised ribs 221 on the top of the outer casing 2, an effective heat dissipation area is increased, allowing heat to be dissipated into the outside air more quickly, enhancing heat dissipation capacity and reducing the risk of failure due to overheating. Furthermore, the raised ribs 221 utilize the space at the top of the outer casing 2 without occupying additional internal space, saving space and not affecting the layout of other components. Compared to complex cooling fans or liquid cooling systems, the raised ribs 221 have a simple structure, low cost, are easy to manufacture and maintain, and are suitable for large-scale production applications.

[0095] Specifically, in some embodiments, the outer casing 2 is configured as a metal casing 2.

[0096] The metal casing 2 can be made of aluminum, aluminum alloy, or steel, which have good thermal conductivity and mechanical strength. Because metal has good thermal conductivity, it can effectively conduct internally generated heat to the outside air, keeping the operating temperature of the internal electronic components within a safe range. The metal casing 2 not only provides physical protection but also serves as part of the heat dissipation path, helping the internal electronic components dissipate heat.

[0097] To ensure the safety and stability of cable connections, please refer to [link / reference]. Figure 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.

[0098] The fixing structure 25 can be directly mounted on the circuit board assembly 231, for example, it can be a snap-on, clamp-on, or screw-fixed structure. The fixing structure 25 is set at critical locations where cables need to be fixed, such as near the power terminal 232 or in areas with dense wiring.

[0099] By using the fixing structure 25, cable loosening due to vibration or other external forces can be effectively avoided, ensuring the reliability of electrical connections. Furthermore, the fixing structure 25 can organize and constrain cables, making wiring neater and more orderly, reducing the possibility of cable crossings, facilitating subsequent inspection and maintenance, preventing sparks or short circuits caused by poor contact, and improving system safety.

[0100] This utility model also proposes a refrigeration device, which includes a heat exchanger and a motor 100. The specific structure of the motor 100 is as described in the above embodiments. Since this refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0101] Specifically, in one embodiment, the refrigeration equipment includes an air conditioner. The air conditioner includes an indoor unit and an outdoor unit, and the motor 100 is used in the fan motor of the air conditioning system, such as a condenser fan and an evaporator fan.

[0102] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An electric machine characterized in that, The motor comprises: a motor body comprising a casing and a stator arranged in the casing, a bottom of the casing being provided with a wire passing hole; and an electric control structure comprising a shell and an electric control device and an electric connection wire arranged in the shell, the electric control device comprising a circuit board assembly and an electric connection terminal electrically connected with the circuit board assembly, a top of the shell being mounted on the bottom of the casing; wherein a communicating portion extends downward from the top of the shell, the communicating portion is provided with a communicating channel communicating the wire passing hole and an inner cavity of the shell, the communicating portion is located at one side of the circuit board assembly, and a lower end of the communicating portion is arranged protruding or flush with a lower side of the circuit board assembly, one end of the electric connection wire is arranged in the communicating channel and the wire passing hole and connected with windings of the stator, the other end of the electric connection wire is connected with the electric connection terminal, and the bottom of the shell is further provided with a water passing hole. The motor further comprises a glue sealing structure arranged in the shell, the glue sealing structure is located at an upper end of the shell, and a glue filling surface of a lower end surface of the glue sealing structure is arranged protruding or flush with a lower side of the circuit board assembly to glue seal the circuit board assembly.

2. The electric machine of claim 1, wherein, The communicating portion comprises a side surrounding portion surrounding the annular side portion of the shell to form the communicating channel, an inner side of the side surrounding portion has a guide inclined surface spaced apart from and oppositely arranged with the annular side portion, and the guide inclined surface is inclined downward from the top of the shell towards a direction close to the annular side portion.

3. The electric machine of claim 1, wherein, The top of the shell is provided with a first connecting hole, the casing is provided with a second connecting hole, and the shell is fixed with the casing by a first connecting member arranged in the first connecting hole and the second connecting hole.

4. The electric machine of claim 1, wherein, A lower hole rim of the first connecting hole is arranged flush with or lower than the circuit board assembly. The circuit board assembly comprises a first circuit board and a second circuit board arranged in a spaced apart manner in a vertical direction, the first circuit board is connected with the shell through a first connecting structure, and the second circuit board is connected with the first circuit board through a second connecting structure.

5. The electric machine of claim 1, wherein, The first connecting structure comprises a third connecting hole arranged on the first circuit board and a fourth connecting hole arranged on the shell, and the first circuit board is fixed with the shell by a second connecting member arranged in the third connecting hole and the fourth connecting hole in sequence; and / or 6. The electric machine of claim 5, wherein, The second connecting structure comprises a clamping portion and a cooperating portion separately 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 portion and the cooperating portion. The circuit board assembly further comprises a spacing portion arranged on the first circuit board or the second circuit board, and the spacing portion is located between the first circuit board and the second circuit board.

7. The electric machine of claim 5, wherein, The circuit board assembly further comprises a power module arranged below the top of the shell.

8. The electric machine of claim 1, wherein, The top of the shell is provided with a heat dissipation structure corresponding to a region of the power module, and the heat dissipation structure is in heat exchange relationship with the power module. The heat dissipation structure comprises a plurality of protruding ribs protruding on an upper surface of the top of the shell.

9. The electric machine of claim 8, wherein, The shell is arranged as a metal shell; and / or 10. The electric machine of claim 1, wherein, ​ The electric control structure further comprises a fixing structure arranged on the circuit board assembly and used for fixing a cable.

11. A refrigeration appliance characterized in that, The electric machine comprises the electric machine as claimed in any one of claims 1 to 10.

12. The refrigeration appliance of claim 11, wherein, The refrigeration equipment comprises an air conditioner.

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