Self-air-cooling motor device

Abstract

The utility model provides a self-air-cooling motor device, which comprises a rotor assembly, a stator assembly and a motor casing, the motor casing comprises a motor outer casing and a motor inner casing which are mutually nested, an air duct is arranged between the motor outer casing and the motor inner casing, and one end of the motor casing is provided with a fan assembly externally connected with a driving power supply. The fan assembly comprises a fan shell and a fan contained in the fan shell, the axial direction of the fan is parallel to a middle shaft of the rotor assembly, an air channel of the motor shell is communicated with the space in the fan shell and used for guiding airflow into the air channel of the motor to cool the motor, and the motor shell is of a double-layer nested structure. The space between the two layers of shells serves as an air channel, the air channel communicates with a fan assembly installed at one end of the motor shell, the direction of airflow generated by the fan assembly is parallel to a motor shaft, the airflow is conducted in the axial direction of the motor shell to achieve heat dissipation, redundant matched structures do not need to be added, and fan blades are driven to rotate through an external power source. The burden on the operation of the motor is avoided, and the motor circuit is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a self-air cooling motor device. Background Art

[0002] During the operation of the motor, part of the power generated by the motor will be converted into heat energy. If the heat cannot be dissipated in time, the temperature will rise, which will cause damage to the motor circuit components and even cause accidents. At the same time, motor heat dissipation is a key process to ensure the normal operation of the motor, and the heat generated inside the motor is discharged outside the machine. In the design and application of the motor, the design of the heat dissipation device is very important. To ensure the normal operation of the motor, it is necessary to select suitable materials, carry out structural design, and adopt appropriate heat dissipation methods. At the same time, according to different use environments and workloads, the heat dissipation system needs to be adjusted.

[0003] There are many ways to dissipate heat from the motor, but the most commonly used are air cooling and water cooling. Water cooling requires water to circulate, so a water pump is usually needed to pump water. It requires special water source pumps, pipes and other related structures. The structure is complex and costly, and the drive also consumes electricity. However, air cooling itself has its disadvantages. The fan layout occupies the outer space of the motor, which is not conducive to the use of the motor. In addition, the motor rotor is generally used to drag the fan blades, which increases the torque of the rotor, easily causing the motor starting current to overload and reducing the life of the motor.

[0004] In summary, the existing motor cooling has the technical problems of high cost, being unfavorable for motor arrangement and reducing the service life of the motor. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing motor cooling has high cost, is not conducive to motor arrangement and reduces the service life of the motor.

[0006] To solve the above problems, the utility model provides a self-air-cooled motor device, including a rotor assembly, a stator assembly and a motor casing, the motor casing including a motor outer casing and a motor inner casing which are nested with each other, with an air duct therebetween, a fan assembly with an external driving power supply is provided at one end of the motor casing, the fan assembly includes a fan casing and a fan accommodated in the fan casing, the axial direction of the fan is parallel to the central axis of the rotor assembly, the air duct of the motor casing is connected to the space in the fan casing, and is used to guide the airflow into the motor air duct to cool the motor.

[0007] This motor device adopts a self-cooling design. The motor shell itself is structurally improved and adopts a double-layer nested structure. The space between the two layers of the shell serves as an air duct. The air duct is connected to a fan assembly installed at one end of the motor shell. The direction of the airflow generated by the fan assembly is parallel to the motor shaft, and the airflow is guided along the axis of the motor shell to dissipate the heat generated during the operation of the motor. The fan of this design is installed at one end of the motor axis, and air flow conduction and heat dissipation are achieved through the air duct inside the motor shell itself. There is no need to add too many redundant fan structures, and the design drives the fan blades to rotate through an external power supply, thereby avoiding burdening the operation of the motor itself and protecting the motor circuit. This effectively solves the technical problems of existing motor cooling that are high cost, not conducive to motor layout and reduces the service life of the motor.

[0008] As a preferred solution, the fan housing includes an outer shell and an inner shell that are nested with each other, the outer shell is fitted with the end surface of the motor housing, and the inner shell has a notch structure at one end adjacent to the motor housing, which is used to reserve space for connecting the motor housing air duct. The structural design of the connection between the fan assembly and the air duct in the motor housing is optimized.

[0009] As a preferred solution, the fan assembly is arranged at one end of the motor housing away from the motor output shaft, one end of the motor inner housing is fixedly connected to the connecting flange at the end of the motor, and a reserved space is provided between the motor outer housing and the connecting flange for connecting the air duct to the space outside the motor. The structure of connecting the air duct of the motor housing with the external air space is optimized to ensure the heat dissipation effect.

[0010] As a preferred solution, a control box is provided on one side of the outer peripheral surface of the motor housing, and the motor housing and the motor inner housing are both provided with wiring through holes at the position of the control box, for introducing the wiring of the stator assembly into the control box. The structure of the motor itself is optimized, and the control box is provided outside the housing, which facilitates the drive control and data collection of the motor.

[0011] As a preferred solution, a dustproof tube is installed between the motor outer shell and the motor inner shell to connect the wiring through holes of the two, which is used to isolate the wiring through holes from the air duct of the motor shell. The design of the wiring position of the control box is optimized to avoid the introduction of external dust and impurities into the internal space where the motor control box and the rotor stator are located.

[0012] As a preferred solution, the motor inner housing is provided with a sink groove for fixing the dustproof tube at the outer edge of its wiring through hole, which optimizes the installation and fixing structure of the dustproof tube in the device and improves the sealing effect of the dustproof tube position.

[0013] As a preferred solution, a partition plate is provided on the end surface of the motor inner shell adjacent to the fan assembly, and the partition plate closes the end surface opening of the motor inner shell to block the space where the stator assembly and the rotor assembly are located from the airflow output by the fan assembly. The airflow structure design inside the fan assembly is optimized, and the airflow is blocked by the partition plate so as to guide the airflow to the air duct of the motor shell, thereby optimizing the heat dissipation effect.

[0014] As a preferred solution, the fan assembly further includes a fan cover plate, which has a stepped surface structure matched with the end surface of the fan housing, and is used to place the fan and shield the end surface of the fan housing away from the motor housing. The structural design of the fan assembly is optimized to facilitate the positioning of the fan blades and the integrity and airtightness of the structure.

[0015] As a preferred solution, the motor housing and the motor inner housing are an integrally connected structure, and the air duct is an axial through hole structure between the motor inner housing and the motor housing. The motor structure design in the device is optimized, and the integral design is simple and firm.

[0016] As a preferred solution, the sheet metal structure at the connection position between the motor outer shell and the motor inner shell is provided with an arc corner inner concave surface structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a self-air-cooled motor device provided by the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the Zhongzi air-cooled motor device from another angle;

[0019] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the Zhongzi air-cooled motor device;

[0020] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the Zhongzi air-cooled motor device.

[0021] in, Figure 1-Figure 4 middle:

[0022] 1. Rotor assembly; 2. Motor housing; 2-1. Motor outer shell; 2-2. Motor inner shell; 2-3. Air duct; 2-4. Wiring through hole; 2-5. Dustproof pipe; 2-6. Sink; 2-7. Concave surface structure of arc corner; 3. Fan assembly; 3-1. Outer shell; 3-2. Fan cover; 3-3. Fan; 3-4. Inner shell; 4. Connecting flange; 5. Control box; 6. Partition plate; 7. Stator assembly. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] refer to Figure 1-Figure 4 The following embodiments are described, Figure 1 A schematic diagram of the structure of a self-air-cooled motor device provided by the utility model; Figure 2 for Figure 1 A schematic diagram of the structure of the Zhongzi air-cooled motor device from another angle;

[0025] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the Zhongzi air-cooled motor device; Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the Zhongzi air-cooled motor device.

[0026] A self-air-cooled motor device provided in the present embodiment includes a rotor assembly 1, a stator assembly 7 and a motor casing 2. The motor casing 2 includes a motor outer casing 2-1 and a motor inner casing 2-2 which are nested with each other, and an air duct 2-3 is provided therebetween. A fan assembly 3 with an external driving power supply is provided at one end of the motor casing 2. The fan assembly 3 includes a fan casing and a fan 3-3 accommodated in the fan casing. The axial direction of the fan 3-3 is parallel to the central axis of the rotor assembly 1. The air duct 2-3 of the motor casing 2 is connected to the space in the fan casing, and is used to direct airflow into the motor air duct 2-3 to cool the motor.

[0027] This motor device adopts a self-cooling design. The motor shell itself is structurally improved and adopts a double-layer nested structure. The space between the two layers of the shell serves as an air duct. The air duct is connected to a fan assembly installed at one end of the motor shell. The direction of the airflow generated by the fan assembly is parallel to the motor shaft, and the airflow is guided along the axis of the motor shell to dissipate the heat generated during the operation of the motor. The fan of this design is installed at one end of the motor axis, and air flow conduction and heat dissipation are achieved through the air duct inside the motor shell itself. There is no need to add too many redundant fan structures, and the design drives the fan blades to rotate through an external power supply, thereby avoiding burdening the operation of the motor itself and protecting the motor circuit. This effectively solves the technical problems of existing motor cooling that are high cost, not conducive to motor layout and reduces the service life of the motor.

[0028] In the technical solution provided in this embodiment, the fan casing includes an outer shell 3-1 and an inner shell 3-4 which are nested with each other. The outer shell 3-1 is fitted with the end face of the motor casing 2-1, and the inner shell 3-4 has a notch structure at the end adjacent to the motor casing 2, which is used to reserve space for connecting to the motor casing air duct 2-3.

[0029] This design optimizes the structural design of the connection between the fan assembly and the air duct in the motor casing. The structure of the fan casing is similar to that of the motor casing and also adopts an inner and outer shell nested design. The end face of the outer shell is butted against the end face of the motor casing to limit the fan airflow and prevent it from losing. A gap is set on the inner layer that is not closed with the inner shell of the motor so that the air duct of the motor casing is connected with the fan space so as to guide the airflow to the position that needs cooling, thereby improving the air cooling effect.

[0030] In the technical solution provided by this embodiment, the fan assembly 3 is arranged at one end of the motor housing 2 away from the motor output shaft, one end of the motor inner housing 2-2 is fixedly connected to the connecting flange 4 at the end of the motor, and there is a reserved space between the motor outer housing 2-1 and the connecting flange 4 for connecting the air duct 2-3 with the outer space of the motor. This design optimizes the structure of the air duct of the motor housing connecting with the external air space, ensuring the heat dissipation effect, the openings of the air duct at both ends of the motor housing, one end is connected with the inner space of the fan, and the other end is directly connected with the external atmospheric environment through the reserved space between the motor housing and the connecting flange.

[0031] In the technical solution provided in this embodiment, a control box 5 is provided on one side of the outer peripheral surface of the motor housing 2-1, and wiring through holes 2-4 are provided on the motor housing 2-1 and the motor inner housing 2-2 at the position of the control box 5, for introducing the wiring of the stator assembly 7 into the control box 5. The structure of the motor itself is optimized, and the control box is provided outside the housing, which facilitates the drive control and data collection of the motor.

[0032] In the technical solution provided in this embodiment, a dustproof tube 2-5 is installed between the motor outer shell 2-1 and the motor inner shell 2-2 to connect the wiring through holes 2-4 of the two, and is used to isolate the wiring through holes 2-4 from the air duct 2-3 of the motor shell 2. On the basis of the structure of the above embodiment, the design of the wiring position is optimized for the control structure on the side of the motor shell. Since the wiring through holes directly connect the internal space where the motor rotor stator is located with the space where the control box outside the motor is located, and since the connecting space directly passes through the air duct in the motor shell, it is easy to introduce external dust and other impurities into the internal space of the motor and the control box space due to the cooling airflow. Long-term use is not conducive to the maintenance of the motor equipment and is easy to cause a reduction in service life. Therefore, a dustproof tube is set to separate the air duct space from the control box space and the internal space of the motor to avoid introducing external dust and impurities into the internal space where the motor control box and the rotor stator are located.

[0033] In the technical solution provided in this embodiment, the motor inner housing 2-2 is provided with a sink 2-6 for fixing the dustproof tube 2-5 at the outer edge of its wiring through hole 2-4. Based on the design of the above embodiment, the installation and fixing structure of the dustproof tube in the device is optimized, and the sealing effect of the dustproof tube position is also improved. A sink with a shape matching the dustproof tube is provided at the outer edge of the wiring through hole of the motor inner housing, so as to achieve a good fixing effect on the dustproof tube, and the sealing effect of the dustproof tube can also be improved through this structure.

[0034] In the technical solution provided in this embodiment, a partition plate 6 is provided on the end face of the motor inner housing 2-2 adjacent to the fan assembly 3, and the partition plate 6 closes the end face opening of the motor inner housing 2-2, and is used to block the space where the stator assembly 7 and the rotor assembly 1 are located from the airflow output by the fan assembly 3. This design optimizes the airflow structure design inside the fan assembly, and blocks the airflow by the partition plate so as to guide the airflow to the air duct of the motor housing, thereby optimizing the heat dissipation effect. The structure of the partition plate can be a flat plate structure, or in order to achieve a better airflow guiding effect, the partition plate can adopt a structure that protrudes toward one side of the fan, such as a conical or arc-shaped structure.

[0035] In the technical solution provided in this embodiment, the fan assembly 3 also includes a fan cover plate 3-2, which has a stepped surface structure matched with the end surface of the fan housing, and is used to place the fan 3-3 and shield the end surface of the fan housing away from the motor housing 2. This design optimizes the structural design of the fan assembly to facilitate the positioning of the fan blades and the integrity and sealing of the structure, and the central axis of the fan can be set at the central extension structure position of the fan cover plate.

[0036] In the technical solution provided by this embodiment, the motor housing 2-1 and the motor inner housing 2-2 are an integrally connected structure, and the air duct 2-3 is an axial through hole structure between the motor inner housing 2-2 and the motor housing 2-1. The motor structure design in the device is optimized, and the integral design is simple and firm.

[0037] In the technical solution provided in this embodiment, the sheet metal structure at the connection position between the motor outer shell 2-1 and the motor inner shell 2-2 is provided with a circular arc corner inner concave surface structure 2-7. By providing the circular arc corner structure at the connection position between the inner and outer shells, the secondary processing of the shell can be facilitated, the formation of knife edges can be avoided, the integrity of the shell can be improved, and the surface strength can be reduced by avoiding the formation of burrs during processing.

[0038] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A self-air-cooled motor device, comprising a rotor assembly (1), a stator assembly (7) and a motor housing (2), characterized in that: The motor housing (2) comprises a motor housing (2-1) and a motor inner housing (2-2) which are nested with each other, and an air duct (2-3) is provided between the two. A fan assembly (3) connected to an external driving power source is provided at one end of the motor housing (2). The fan assembly (3) comprises a fan housing and a fan (3-3) accommodated in the fan housing. The axial direction of the fan (3-3) is parallel to the central axis of the rotor assembly (1). The air duct (2-3) of the motor housing (2) is connected to the space in the fan housing, and is used to guide airflow into the motor air duct (2-3) to cool the motor. The fan housing comprises an outer shell (3-1) and an inner shell (3-4) which are nested with each other, the outer shell (3-1) being fitted with the end surface of the motor housing (2-1), and the inner shell (3-4) having a notch structure at one end adjacent to the motor housing (2) for reserving space for connecting to the motor housing air duct (2-3).

2. The self-air-cooled motor device according to claim 1, characterized in that: The fan assembly (3) is arranged at one end of the motor housing (2) away from the motor output shaft, one end of the motor inner housing (2-2) is fixedly connected to the connecting flange (4) at the end of the motor, and a reserved space is provided between the motor outer housing (2-1) and the connecting flange (4) for connecting the air duct (2-3) with the space outside the motor.

3. The self-air-cooled motor device according to claim 1 or 2, characterized in that: A control box (5) is provided on one side of the outer peripheral surface of the motor housing (2-1), and wiring through holes (2-4) are provided on the motor housing (2-1) and the motor inner housing (2-2) at the position of the control box (5) for guiding wiring of the stator assembly (7) into the control box (5).

4. The self-air-cooled motor device according to claim 3, characterized in that: A dustproof tube (2-5) is installed between the motor housing (2-1) and the motor inner housing (2-2) to connect the wiring through holes (2-4) of the two, and is used to isolate the wiring through holes (2-4) from the air duct (2-3) of the motor housing (2).

5. The self-air-cooled motor device according to claim 4, characterized in that: The motor inner housing (2-2) is provided with a sink groove (2-6) for fixing the dustproof tube (2-5) at the outer edge of the wiring through hole (2-4) thereof.

6. The self-air-cooled motor device according to claim 4, characterized in that: A partition plate (6) is provided on the end surface of the motor inner housing (2-2) adjacent to the fan assembly (3); the partition plate (6) closes the end surface opening of the motor inner housing (2-2) and is used to block the space where the stator assembly (7) and the rotor assembly (1) are located from the airflow output by the fan assembly (3).

7. The self-air-cooled motor device according to claim 5, characterized in that: The fan assembly (3) also includes a fan cover plate (3-2), which has a stepped surface structure that matches the end surface of the fan housing and is used to accommodate the fan (3-3) and shield the end surface of the fan housing that is away from the motor housing (2).

8. The self-air-cooled motor device according to claim 1, characterized in that: The motor housing (2-1) and the motor inner housing (2-2) are an integrally connected structure, and the air duct (2-3) is an axial through hole structure between the motor inner housing (2-2) and the motor housing (2-1).

9. The self-air-cooled motor device according to claim 1, characterized in that: The sheet metal structure at the connection position between the motor outer shell (2-1) and the motor inner shell (2-2) is provided with an arc corner inner concave surface structure (2-7).

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