Self-air-cooling motor shell and self-air-cooling motor device

Abstract

The utility model provides a self-air-cooling motor casing, which comprises a motor inner casing and a motor outer casing buckled with the motor inner casing, the motor outer casing comprises a plurality of outer casing splicing strips parallel to a motor shaft, the middle parts of the outer casing splicing strips are convex, and an air channel is arranged between the outer casing splicing strips and the motor inner casing and is used for introducing airflow blown out by an external heat dissipation fan to dissipate heat. The motor shell is of a double-layer structure, an air channel is formed between the two layers of shell bodies, the air channel can be communicated with an external fan for heat dissipation, and airflow generated by the fan is guided in the direction parallel to a motor shaft so that sufficient heat dissipation can be achieved. The motor shell is formed by mutually splicing a plurality of shell splicing strips, the shell splicing strips are arranged in the direction of a motor shaft in a long strip shape, an air channel is formed between the middle protrusions of the shell splicing strips and the motor inner shell so as to achieve the heat dissipation function, and the shell splicing strips are simple in structure and easier to machine compared with integrated forming. And further processing improvement can be directly carried out on the basis of the existing motor shell. The utility model also provides a self-air-cooling motor device.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a self-air-cooling motor casing and 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 layout 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] In order to solve the above problems, the utility model provides a self-air-cooled motor casing, including a motor inner casing for accommodating a motor stator and a motor rotor, wherein a motor outer casing is snap-fittedly mounted on the outer peripheral wall of the motor inner casing, and the motor outer casing includes a plurality of casing strips arranged parallel to the motor shaft, wherein the middle portion of each of the casing strips is convex, and an air duct is provided between the casing strip and the motor inner casing for introducing airflow blown by an external cooling fan for heat dissipation.

[0007] The motor casing is a structural improvement over the general casing. It has a double-layer nested structure as a whole. The space between the two layers of the casing serves as an air duct. The air duct between the two layers of the casing can be connected to an external fan for heat dissipation, and the airflow generated by the fan is guided in a direction parallel to the motor axis to achieve sufficient heat dissipation. The motor casing is composed of a plurality of casing strips spliced ​​together. The casing strips are in the shape of long strips and arranged in the direction of the motor axis. An air duct is formed between the middle protrusion of the casing strip and the inner casing of the motor to achieve the heat dissipation function. The casing strips have a simple structure and are easier to process than one-piece molding. Further processing improvements can be made directly on the basis of the existing motor casing. The casing strips can be directly installed outside the motor casing to obtain an air duct structure for cooling, which effectively solves the technical problems of existing motor cooling that are high in cost, not conducive to motor layout, and reduces the service life of the motor.

[0008] As a preferred solution, the outer peripheral wall of the motor inner shell is provided with a heat sink protruding along the motor axial direction, and buckle structures are provided on both sides of the shell strip, and the shell strip is buckled and installed with the heat sink through the buckle structure. The structure of the shell strip is optimized, and buckle structures are provided on both sides of the shell strip, which can be directly buckled and installed with the heat sink on the motor inner shell.

[0009] As a preferred solution, a plane boss is provided in the middle of the shell strip, the plane boss fits with the inner shell surface of the motor, and cooperates with the pin structure to fix the shell strip to the inner shell of the motor. The structure of the shell strip is optimized, and the plane boss protruding toward the inner shell side of the motor fits with the surface of the inner shell of the motor, and a stable fixing plane is provided through this structure.

[0010] As a preferred solution, a support plate is provided on one side of the outer shell strip adjacent to the planar boss, the support plate protrudes toward one side of the motor inner shell and is parallel to the heat sink, and a limit support is provided between the support plate and the outer peripheral surface of the motor inner shell. The structural design of the outer shell strip is further optimized, and a support plate is further provided on the basis of the buckling structure and the planar boss structure, so that the relative position between the outer shell strip and the motor inner shell is more stable, and the structural misalignment and twisting are prevented.

[0011] As a preferred solution, a mounting slot is provided on the side of the outer shell strip away from the inner shell of the motor for mounting the motor support structure and the motor control box, thereby optimizing the mounting structure outside the device to facilitate the installation arrangement of other structures on the motor.

[0012] As a preferred solution, a connecting flange is fixedly connected to one end of the motor inner shell, and a preset distance is provided between the connecting flange and the motor outer shell for connecting the air duct to the outside. The motor shell structure is optimized, and the air duct conduction distance is reserved to improve the heat dissipation effect.

[0013] As a preferred solution, eyebolts are installed and fixed on the outer peripheral surface of the motor inner shell between the connecting flange and the motor outer shell. The motor shell structure is further optimized, and the transportation and installation of the motor shell are optimized by setting the eyebolts.

[0014] The utility model also provides a self-cooling motor device, including a heat dissipation fan, and also includes a self-cooling motor casing as any of the above items. Since the above self-cooling motor casing has the above beneficial effects, the self-cooling motor device having the self-cooling motor casing should also have the above beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a self-air-cooled motor housing provided by the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the local structure of the A area of ​​the Zhongzi air-cooled motor casing;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of the shell strips in the Zhongzi air-cooled motor casing.

[0018] in, Figure 1-Figure 3 middle:

[0019] 1. Motor inner shell; 2. Outer shell strip; 2-1. Snap-on structure; 2-2. Plane boss; 2-3. Support plate; 2-4. Installation slot; 3. Connecting flange; 4. Air duct; 5. Eyebolt. DETAILED DESCRIPTION

[0020] 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.

[0021] refer to Figure 1-Figure 3 The following embodiments are described, Figure 1 A schematic diagram of the structure of a self-air-cooled motor housing provided by the utility model; Figure 2 for Figure 1 Schematic diagram of the local structure of the A area of ​​the Zhongzi air-cooled motor casing; Figure 3 for Figure 1 Schematic diagram of the structure of the shell strips in the Zhongzi air-cooled motor casing.

[0022] A self-air-cooled motor casing provided in the present embodiment includes a motor inner casing 1 for accommodating a motor stator and a motor rotor, a motor outer casing is snap-fittedly mounted on the outer peripheral wall of the motor inner casing 1, and the motor outer casing includes a plurality of casing strips 2 arranged parallel to the motor shaft, and the middle portion of each casing strip 2 is convex, and an air duct 4 is provided between the casing strip 2 and the motor inner casing 1 for introducing airflow blown by an external cooling fan for heat dissipation.

[0023] The motor casing is a structural improvement on the general casing. It is a double-layer nested structure as a whole. The space between the two layers of the casing serves as an air duct. The air duct between the two layers of the casing can be connected to an external fan for heat dissipation, and the airflow generated by the fan is guided in a direction parallel to the motor axis to achieve sufficient heat dissipation. The motor casing is composed of a plurality of casing strips spliced ​​together. The casing strips are in the shape of long strips and are arranged in the direction of the motor axis. An air duct is formed between the middle protrusion of the casing strip and the inner casing of the motor to achieve the heat dissipation function. The casing strips have a simple structure and are easier to process than one-piece molding. Further processing improvements can be made directly on the basis of the existing motor casing. The casing strips can be directly installed outside the motor casing to obtain an air duct structure for cooling, which greatly reduces the practical cost of the design. The optimized cooling effect can be obtained by only increasing the radial size of the motor, avoiding excessive increase in the difficulty of motor layout, and adapting to the external fan to achieve air supply and heat dissipation, avoiding increasing the workload of the motor, and effectively solving the technical problems of existing motor cooling that is high in cost, not conducive to motor layout and reducing the service life of the motor.

[0024] In the technical solution provided in this embodiment, the outer peripheral wall of the motor inner shell 1 is provided with a heat sink protruding along the axial direction of the motor, and a snap structure 2-1 is provided on both sides of the outer shell strip 2. The outer shell strip 2 is snap-fitted and installed with the heat sink through the snap structure 2-1.

[0025] This design optimizes the structure of the outer shell strips. Since a general motor shell is generally provided with heat sinks protruding along the motor shaft direction on its outer circumference, a snap-in structure is provided on both sides of the outer shell strips for such a structure. The snap-in structure is directly used to snap-in and fix the heat sinks on the motor inner shell, making the fixation between the motor outer shell and the motor inner shell more stable.

[0026] In the technical solution provided in this embodiment, a plane boss 2-2 is provided in the middle of the outer shell strip 2, and the plane boss 2-2 is in contact with the surface of the motor inner shell 1, and cooperates with the pin structure to fix the outer shell strip 2 to the motor inner shell 1. The structure of the outer shell strip is further optimized on the basis of the structure of the above embodiment, and the plane boss protruding toward the motor inner shell side is in contact with the surface of the motor inner shell, and a stable fixing plane is provided through this structure.

[0027] In the technical solution provided by this embodiment, a support plate 2-3 is provided adjacent to the plane boss 2-2 on one side of the outer shell strip 2, the support plate 2-3 protrudes toward one side of the motor inner shell 1 and is parallel to the heat sink, and a limit support is provided between the support plate 2-3 and the outer peripheral surface of the motor inner shell 1. The structural design of the outer shell strip is further optimized, and a support plate is further provided on the basis of the buckling structure and the structure of the plane boss. The structure of the support plate is located at the edge of the outer shell strip near the side edge, and cooperates with the concave structure at the side rib position of the motor inner shell to firmly position the outer shell strip, so that the relative position between the outer shell strip and the motor inner shell is more stable, and the structural misalignment and twisting are prevented.

[0028] In the technical solution provided in this embodiment, the side of the outer shell strip 2 facing away from the motor inner shell 1 is provided with mounting slots 2-4 for mounting the motor's leg structure and the motor control box. This design optimizes the mounting structure on the outside of the device to facilitate the installation arrangement of other structures on the motor; the preferred design is that the position of the mounting slot corresponds to the flat boss on the other side of the outer shell strip, thereby reducing the average thickness of the shell and saving materials.

[0029] In the technical solution provided in this embodiment, a connection flange 3 is fixedly connected to one end of the motor inner shell 1, and a preset distance is provided between the connection flange 3 and the motor outer shell, which is used to connect the air duct 4 with the outside. This design optimizes the motor shell structure, avoids the connection flange used for installation closing the air duct to block the cooling airflow, reserves the air duct conduction distance, and improves the heat dissipation effect.

[0030] In the technical solution provided by this embodiment, the outer peripheral surface between the outer connection flange 3 and the motor outer shell of the motor inner shell 1 is fixed with eye screws 5. The motor shell structure is further optimized, and the transportation installation of the motor shell is optimized by setting the eye screws.

[0031] The present embodiment provides a self-cooling motor device, including a heat dissipation fan, and also includes a self-cooling motor casing as in the above embodiment. Since the self-cooling motor casing in the above embodiment has the above-mentioned beneficial effects, the self-cooling motor device having the self-cooling motor casing should also have corresponding beneficial effects.

[0032] Although the disclosure is 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 housing, characterized in that: The invention comprises a motor inner shell (1) for accommodating a motor stator and a motor rotor, wherein a motor outer shell is mounted on the outer peripheral wall of the motor inner shell (1), and the motor outer shell comprises a plurality of outer shell strips (2) arranged parallel to the motor shaft, wherein the middle portion of each outer shell strip (2) is convex, and an air duct (4) is provided between the outer shell strip (2) and the motor inner shell (1) for introducing airflow blown out by an external heat dissipation fan for heat dissipation.

2. The self-air-cooled motor housing according to claim 1, characterized in that: The outer peripheral wall of the motor inner shell (1) is provided with a heat sink protruding along the motor axis, and buckle structures (2-1) are provided on both sides of the outer shell strip (2), and the outer shell strip (2) is buckled and installed with the heat sink via the buckle structures (2-1).

3. The self-air-cooled motor housing according to claim 2, characterized in that: A plane boss (2-2) is provided in the middle of the outer shell strip (2), the plane boss (2-2) is in contact with the surface of the motor inner shell (1), and cooperates with a pin structure to fix the outer shell strip (2) and the motor inner shell (1) together.

4. The self-air-cooled motor housing according to claim 3, characterized in that: A support plate (2-3) is provided on one side of the outer shell strip (2) adjacent to the planar boss (2-2); the support plate (2-3) protrudes toward one side of the motor inner shell (1) and is parallel to the heat sink; and a limiting support is provided between the support plate (2-3) and the outer peripheral surface of the motor inner shell (1).

5. The self-air-cooled motor casing according to any one of claims 1 to 4, characterized in that: A mounting slot (2-4) is provided on the side of the outer shell strip (2) facing away from the motor inner shell (1) for mounting the motor support leg structure and the motor control box.

6. The self-air-cooled motor housing according to claim 5, characterized in that: A connecting flange (3) is fixedly connected to one end of the motor inner shell (1), and a preset distance is provided between the connecting flange (3) and the motor outer shell for connecting the air duct (4) with the outside.

7. The self-air-cooled motor housing according to claim 6, characterized in that: A lifting eye screw (5) is installed and fixed on the outer peripheral surface of the motor inner shell (1) between the connecting flange (3) and the motor outer shell.

8. A self-air-cooled motor device, comprising a heat dissipation fan, characterized in that: It also includes a self-air-cooled motor housing as described in any one of claims 1-7.

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