motor

Abstract

This utility model discloses an electric motor, which includes an outer housing, an inner shell, an outer shell, and a sandwich panel spaced between the inner and outer shells along the motor's axial direction. The outer shell has a mounting platform for housing control components. A front cover and a rear cover are respectively installed on both sides of the housing, and the front and rear covers have ventilation holes. A stator is located inside the inner shell and is installed between the front and rear covers. A fan is installed on the outer side of the rear cover along the stator's axial direction, and the diameter of the fan is not less than the outer diameter of the inner shell. This utility model effectively dissipates the heat generated during motor operation through the double-layer housing and fan design, thereby extending the motor's service life and improving operational stability. The "double barrier" design of the double-layer housing significantly improves the motor housing's dustproof, waterproof, and foreign object intrusion prevention capabilities, while also enhancing the overall structural strength of the housing.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor with a double-shell design. Background Technology

[0002] In production and daily life, water pumps or other motorized equipment are needed to increase efficiency. However, existing water pumps or other motorized equipment suffer from slow motor heat dissipation, overheating of the motor casing, and poor motor stability. Furthermore, current motor casing cooling typically uses a single-layer casing with cooling fins and traditional fan cooling. During operation, the fan airflow travels along the cooling fins, resulting in some airflow loss and generally poor cooling performance, while also increasing motor design costs. Additionally, if foreign objects obstruct the cooling fins, heat cannot be quickly and effectively transferred to the air, leading to motor instability, performance degradation, and in severe cases, motor spontaneous combustion. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a motor with a compact structure and good heat dissipation.

[0004] The present invention discloses a motor comprising an outer housing, the housing including an inner shell and an outer shell, and a sandwich panel spaced between the inner shell and the outer shell along the motor axial direction. The outer shell is provided with a mounting platform for placing control components. A front cover and a rear cover are respectively installed on both sides of the housing, and the front cover and the rear cover are provided with vent holes. A stator is provided inside the inner shell and is installed between the front cover and the rear cover. A fan is installed on the outer side of the rear cover along the axial direction of the stator, and the diameter of the fan is not less than the outer diameter of the inner shell.

[0005] In one or more embodiments of this utility model, a junction box is further included, the control component is disposed inside the junction box, and the junction box is detachably installed on the mounting platform.

[0006] In one or more embodiments of the present invention, the control assembly includes a control board and electronic components, wherein the control board is electrically connected to the electronic components and the stator respectively.

[0007] In one or more embodiments of this utility model, the junction box includes a coverless box body and a cover disposed on the upper part of the box body. The bottom of the junction box is provided with a through hole to facilitate direct contact between the electronic components on the circuit board and the chassis platform, thereby facilitating heat dissipation.

[0008] In one or more embodiments of this utility model, the housing is provided with a screw hole along the stator axis, and the rear end cover is installed on the outside of the housing by the cooperation of a screw and the screw hole.

[0009] In one or more embodiments of this utility model, a fan cover is provided on the outer side of the fan, and a filter screen is provided on the side of the fan cover perpendicular to the axial direction.

[0010] In one or more embodiments of this utility model, the sandwich panel is a straight or wavy sandwich panel arranged along the axis.

[0011] In one or more embodiments of this utility model, the inner shell and the outer shell are shells made of conductive metal material.

[0012] The beneficial effects of this utility model are as follows: This utility model adopts a unique shell structure composed of an inner shell, an outer shell, and sandwich plates spaced apart along the motor axis. This increases the heat dissipation area inside the shell and / or optimizes the airflow channel. Combined with the vents on the front and rear covers, and a large-diameter axial fan with a diameter not less than the outer diameter of the inner shell, a highly efficient overall heat dissipation system is formed. The large-diameter fan can generate stronger airflow, effectively removing the heat generated during motor operation, thereby extending the motor's service life and improving operational stability. Meanwhile, the "double barrier" design of the double-shell can significantly improve the dustproof, waterproof and foreign object intrusion prevention capabilities of the motor housing: the outer shell can block most dust, water droplets or solid particles, and the inner shell is further sealed to reduce the probability of impurities entering the motor. It is suitable for harsh environments with dust, humidity or splashes, and extends the maintenance cycle of the motor. The double-shell superimposed structure can disperse external impact forces and vibration loads, improving overall rigidity; it can better resist collisions and vibrations during transportation, installation, or operation, reducing the risk of shell deformation and protecting core components such as internal rotors and windings. It is especially suitable for high-frequency vibration scenarios. Attached Figure Description

[0013] Figure 1 This is an exploded view (a) of the motor in one embodiment of the present invention. Figure 2 This is an exploded view (II) of the motor in one embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of the motor housing in one embodiment of the present invention; Figure 4 This is a cross-sectional view of the motor in one embodiment of the present invention.

[0014] In the diagram: housing 100, inner housing 101, outer housing 102, sandwich panel 103, mounting platform 104, screw hole 105, front cover 200, rear cover 300, screw 301, fan 400, fan cover 500, junction box 600, box body 601, box cover 602, control assembly 700, electronic component 701, control board 702, stator 800. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0016] In the description of this utility model, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] It should be noted that, unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0018] For the above issues, please refer to the appendix. Figures 1-4 As shown, this utility model provides an electric motor, which includes an outer housing 100. The housing 100 is composed of an inner shell 101 and an outer shell 102, forming a double-layer structure with a sandwich layer.

[0019] Between the inner shell 101 and the outer shell 102, multiple sandwich panels 103 are spaced apart along the motor axial direction. These sandwich panels 103 are preferably designed in an arc or wavy shape. This non-straight geometry increases the heat transfer surface area inside the sandwich without significantly increasing the shell thickness, and generates more turbulence when air flows through, thereby improving the heat exchange efficiency inside the sandwich. Pre-defined airflow gaps are maintained between the sandwich panels 103, forming an "air insulation layer" or acting as a "forced convection channel," ensuring that air can flow smoothly and carry away heat, improving overall heat dissipation efficiency. Simultaneously, this double-shell design provides the motor with a "double barrier," significantly enhancing its dustproof, waterproof, and foreign object intrusion prevention capabilities, effectively dispersing external impact forces and vibration loads, improving overall rigidity, and exhibiting excellent vibration resistance. If conductive metal materials are used, it can also provide potential electromagnetic shielding.

[0020] In a further embodiment, the housing 102 is provided with a mounting platform 104 for placing the control component 700. This mounting platform 104 provides a compact and integrated mounting location for the control component, realizing the integrated design of the motor body and the control circuit. The control component 700 specifically includes a control board 702 and various electronic components 701 mounted on it. The control board 702 is electrically connected to the electronic components 701 to realize the various functions of the control component; simultaneously, the control board 702 is also electrically connected to the stator 800 to provide drive current and control signals to the stator coils, thereby precisely controlling the operating state of the motor.

[0021] In a further embodiment, a front end cover 200 and a rear end cover 300 are respectively installed on both sides of the housing 100. These end covers not only serve a sealing and supporting function, but also have vent holes to promote ventilation and heat dissipation inside the motor. The rear end cover 300 is connected to the housing 100 using a robust bolt connection: the housing 100 has screw holes 105 along the axial direction of the stator 800, and the rear end cover 300 is securely installed on the outside of the housing 100 through the engagement of screws 301 with these screw holes 105, ensuring a firm and reliable connection.

[0022] In a further embodiment, a stator 800 is installed inside the inner shell 101. The stator 800 is installed between the front end cover 200 and the rear end cover 300; in this embodiment, the structure of the motor rotation function is prior art, so it will not be described in detail here.

[0023] To further enhance heat dissipation, a large-sized fan 400 is installed on the outer side of the rear cover 300 along the axial direction of the stator 800. The diameter of the fan 400 is no less than the outer diameter of the inner housing 101, ensuring that it can generate a sufficiently strong and wide-range airflow. This airflow can pass through the interlayer plate 103 between the inner housing 101 and the outer housing 102, thereby quickly removing the heat generated by the stator 800 and the control components 700. When the motor is operating, the fan 400 rotates at high speed with the motor shaft, generating a large amount of forward-blowing airflow within the fan cover 500. This airflow enters the interlayer channel of the housing 100, which is composed of the inner housing 101, the outer housing 102, and the interlayer plate 103, and exits from the outlet of the front cover 200. Because the large number of interlayer plates 103 in the interlayer greatly increases the heat dissipation area, the heat within the interlayer can be quickly carried away, effectively ensuring the heat dissipation of the motor, thereby ensuring the stability and good performance of the motor, and helping to reduce the design cost of the motor.

[0024] In a further embodiment, a fan shroud 500 is provided on the outer side of the fan 400 to prevent foreign objects from being drawn into the high-speed rotating fan blades. A filter screen is also provided on the side of the fan shroud 500 perpendicular to the axial direction. This filter screen can effectively block external dust, fibers, and other impurities from entering the motor, keeping the motor and control components clean, thereby reducing the risk of poor heat dissipation or short circuits caused by dust accumulation, and extending the service life of the motor and internal components.

[0025] In a further embodiment, a junction box 600 is also included. The control component 700 is integrated and disposed inside the junction box 600, providing additional physical protection for sensitive electronic components. The junction box 600 is designed as a detachable structure, allowing for easy installation or removal from the mounting platform 104. The specific structure of the junction box 600 includes a coverless box body 601 and a cover 602 disposed on the upper part of the box body 601. This split design facilitates the assembly of the control component and internal wiring. In particular, the junction box 600 is preferably made of a thermally conductive material, such as aluminum alloy or other engineering plastics with good thermal conductivity. This allows the junction box itself to act as a heat sink for the control component, effectively conducting the heat generated by the control component during operation to the outside, where it is dissipated through the overall heat dissipation system of the motor housing, further ensuring the long-term stable operation of the control component. In a further embodiment, a through hole is provided at the bottom of the box body 601 to facilitate direct contact between the electronic components on the circuit board and the housing platform, thereby aiding in heat dissipation.

[0026] In a further embodiment, the inner shell 101 and the outer shell 102 can be made of conductive metal materials, such as aluminum alloy or cold-rolled steel sheet. This design forms a "double electromagnetic shielding layer," reducing the outward diffusion of electromagnetic radiation generated during motor operation and preventing interference with surrounding precision electronic equipment (such as sensors and control systems). This is particularly suitable for industrial automation scenarios with high electromagnetic compatibility requirements. The inner shell 101 and the outer shell 102 can be made of different materials to balance various performance characteristics. For example, the outer shell 102 can be made of wear-resistant and corrosion-resistant alloy materials, while the inner shell 101 can be made of materials with better insulation or thermal conductivity. This allows the outer shell 102 to withstand harsh operating environments, while the inner shell 101 protects the core components of the motor.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. An electric motor, characterized in that, The motor includes an outer housing (100), the housing (100) includes an inner shell (101) and an outer shell (102) and a sandwich piece (103) spaced apart between the inner shell (101) and the outer shell (102) along the motor axis. The outer shell (102) is provided with a mounting platform (104) for placing a control component (700). A front cover (200) and a rear cover (300) are respectively installed on both sides of the housing (100). The front cover (200) and the rear cover (300) are provided with ventilation holes. A stator (800) is provided inside the inner shell (101). The stator (800) is installed between the front cover (200) and the rear cover (300). A fan (400) is installed on the outer side of the rear cover (300) along the axial direction of the stator (800). The diameter of the fan (400) is not less than the outer diameter of the inner shell (101).

2. The motor according to claim 1, characterized in that, It also includes a junction box (600), in which the control component (700) is disposed, and the junction box (600) is detachably mounted on the mounting platform (104).

3. The motor according to claim 2, characterized in that, The control assembly (700) includes a control board (702) and electronic components (701), wherein the control board (702) is electrically connected to the electronic components (701) and the stator (800) respectively.

4. The motor according to claim 2, characterized in that, The junction box (600) includes a coverless box body (601) and a cover (602) disposed on the upper part of the box body (601), and a through hole is provided at the bottom of the junction box (600).

5. The motor according to claim 1, characterized in that, The housing (100) is provided with a screw hole (105) along the axial direction of the stator (800), and the rear end cover (300) is installed on the outside of the housing (100) by the cooperation of the screw (301) and the screw hole (105).

6. The motor according to claim 1, characterized in that, The fan (400) is provided with a fan cover (500) on its outer side, and a filter screen is provided on the side of the fan cover (500) perpendicular to the axial direction.

7. The motor according to claim 1, characterized in that, The sandwich panel (103) is a straight or wavy sandwich panel arranged along the axis.

8. The motor according to claim 1, characterized in that, The inner shell (101) and outer shell (102) are shells made of conductive metal material.

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