Three-phase motor control box structure

Abstract

The utility model provides a three-phase motor control box structure, and belongs to the technical field of motors. The problem that an existing control box is poor in heat dissipation is solved. According to the three-phase motor control box structure, a motor comprises a horizontally-arranged machine barrel, the control box structure comprises a box body horizontally arranged on one side of the machine barrel, a box opening of the box body is arranged back to the machine barrel, a box cover matched with the box opening is fixed to the box opening, a wire outlet is formed in the bottom of the box body, and a sheath is vertically formed on the bottom wall of the box body; the sheath is positioned between the wire outlet and the machine barrel; the sheath is of a rectangular cylindrical structure, and the length of the sheath extends in the axial direction of the machine barrel. The bottom wall of the box body is also provided with a plurality of heat conduction holes enabling the inner cavity of the box body to be communicated with the inner cavity of the sheath. The three-phase motor control box structure is good in heat dissipation.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and relates to a three-phase motor, in particular to a control box structure of a three-phase motor. Background Technique

[0002] A three-phase motor refers to a motor powered by three AC power supplies, and its working principle mainly uses the rotating magnetic field generated by the three-phase power supply to generate mechanical motion.

[0003] An existing three-phase motor, such as a portable stepping motor disclosed in the Chinese Patent Database (Application No.: 201710510824.7), includes a machine shell. A slide rail is installed on the machine shell, a support seat is installed on the slide rail, a power supply port is installed in the front of the machine shell, a hanging ring is installed on the top of the machine shell, a stator sealing cover is installed at one end of the machine shell, and the stator sealing cover is fixedly connected to the machine shell by bolts. An embedded plate is installed inside the stator sealing cover by embedding. A plurality of electromagnetic coils are installed on the embedded plate, the electromagnetic coils are isolated by isolation rods, a rotor is installed at the middle position of the stator sealing cover, a magnet is installed outside the rotor, a connecting cable is installed on the embedded plate, a rotating shaft is installed on the rotor, a rear cover is installed at one end of the machine shell, and a ventilation port is installed on the rear cover.

[0004] In the above three-phase motor, a control box is arranged on one side of the machine shell, and the control box is indirectly cooled by contacting the external air through its box wall. This cooling method has poor cooling effect and speed, which affects the life and working stability of the control box. Content of the Utility Model

[0005] The purpose of the utility model is to solve the above problems existing in the prior art, and to provide a control box structure of a three-phase motor with good heat dissipation.

[0006] The purpose of the utility model can be achieved by the following technical solutions: A control box structure of a three-phase motor, the motor includes a horizontally arranged cylinder. This control box structure includes a box body horizontally arranged on one side of the cylinder, the box opening of the box body faces away from the cylinder, and a box cover matching it is fixed at the box opening. An outlet is opened at the bottom of the box body. It is characterized in that a sheath is vertically formed on the bottom wall of the box body, and the sheath is located between the outlet and the cylinder; the sheath is a rectangular tubular structure, and the length of the sheath extends along the axial direction of the cylinder; a plurality of heat conduction holes for communicating the inner cavity of the box body with the inner cavity of the sheath are also provided on the bottom wall of the box body.

[0007] The sheath is vertically arranged and located between the outlet hole and the cylinder, which not only has a good waterproof and dustproof effect, but also enables the box body to directly contact the outside through the sheath under the action of the heat conduction holes, effectively accelerating the internal heat dissipation of the control box, so as to improve the life and working stability.

[0008] In the above-mentioned three-phase motor control box structure, the above-mentioned barrel and the box body are of an integral structure, effectively strengthening the connection strength and stability between the two.

[0009] In the above-mentioned three-phase motor control box structure, the barrel and the box body are integrally formed by casting to simplify the processing steps and facilitate processing.

[0010] In the above-mentioned three-phase motor control box structure, a circle of heat dissipation fins is formed on the outer wall of the barrel and is distributed along the circumferential direction of the barrel, and the length of the heat dissipation fins extends along the axial direction of the barrel to effectively accelerate the heat dissipation of the barrel, thereby reducing the heat transferred from the barrel to the control box.

[0011] In the above-mentioned three-phase motor control box structure, one of the heat dissipation fins is located between the sheath and the barrel, and the side of the heat dissipation fin facing away from the barrel is arranged on the sheath to effectively strengthen the strength of the sheath, keep its structure relatively stable, and ensure the stable progress of the heat dissipation process.

[0012] In the above-mentioned three-phase motor control box structure, a plurality of heat conduction holes are distributed along the axial direction of the barrel, so that the heat conduction holes are evenly arranged, which is more conducive to heat dissipation.

[0013] In the above-mentioned three-phase motor control box structure, the heat conduction holes are in the shape of straight holes.

[0014] In the above-mentioned three-phase motor control box structure, the heat conduction holes are inclined to achieve better waterproof and dustproof effects.

[0015] Compared with the prior art, the three-phase motor control box structure has the following advantages:

[0016] 1. The sheath is vertically arranged and is set between the wire outlet hole and the barrel, which not only has a good waterproof and dustproof effect, but also enables the box body to be in direct contact with the outside world through the sheath under the action of the heat conduction holes, effectively accelerating the internal heat dissipation of the control box to improve the service life and working stability.

[0017] 2. One of the heat dissipation fins extends to the sheath to effectively strengthen the strength of the sheath, keep its structure relatively stable, and ensure the stable progress of the heat dissipation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of a three-phase motor.

[0019] Figure 2 is a three-dimensional schematic diagram of the three-phase motor in another direction.

[0020] Figure 3 is a sectional schematic diagram of the box body.

[0021] In the figure, 1. barrel; 1a. heat dissipation fin; 2. box body; 2a. wire outlet; 2b. sheath; 2c. heat conduction hole; 3. box cover; 4. screw. Detailed implementation mode

[0022] The following are specific embodiments of the present utility model and, in combination with the accompanying drawings, further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0023] As Figure 1 shown, in the three-phase motor control box structure, the motor includes a horizontally arranged barrel 1; the control box structure includes a box body 2 horizontally arranged on one side of the barrel 1. The box body 2 is provided with an inlet hole for communicating the inner cavity of the box body 2 with the inner cavity of the barrel 1. The box opening of the box body 2 faces away from the barrel 1. An outlet 2a is opened at the bottom of the box body 2, and a box cover 3 matching it is fixed at the box opening. In the actual product, the box cover 3 and the box body 2 are fixedly connected by a circle of screws 4.

[0024] Specifically,

[0025] As Figure 2 and Figure 3 shown, a sheath 2b is vertically formed on the bottom wall of the box body 2. The sheath 2b and the box body 2 are of an integral structure, and the sheath 2b is located between the outlet 2a and the barrel 1. The sheath 2b is of a rectangular tubular structure, and the length of the sheath 2b extends along the axial direction of the barrel 1. A plurality of heat conduction holes 2c for communicating the inner cavity of the box body 2 with the inner cavity of the sheath 2b are also provided on the bottom wall of the box body 2.

[0026] The sheath 2b is vertically arranged and located between the outlet hole and the barrel 1, which not only has a good waterproof and dustproof effect, but also enables the box body 2 to be directly in contact with the outside through the sheath 2b under the action of the heat conduction holes 2c, effectively accelerating the internal heat dissipation of the control box to improve the service life and working stability.

[0027] In this embodiment,

[0028] The barrel 1 and the box body 2 are of an integral structure, effectively strengthening the connection strength and stability between the two. Preferably, the barrel 1 and the box body 2 are integrally formed by casting to simplify the processing steps and facilitate processing.

[0029] The plurality of heat conduction holes 2c are distributed along the axial direction of the barrel 1, so that the heat conduction holes 2c are evenly arranged, which is more conducive to heat dissipation. The heat conduction holes 2c are in the shape of straight holes. Preferably, the heat conduction holes 2c are inclined to have a better waterproof and dustproof effect.

[0030] As Figures 1 to 3As shown in the figure, a circle of heat dissipation fins 1a distributed along the circumferential direction of the barrel 1 are formed on the outer wall of the barrel 1, and the length of the heat dissipation fins 1a extends along the axial direction of the barrel 1 to effectively accelerate the heat dissipation of the barrel 1, thereby reducing the heat transferred from the barrel 1 to the control box. One of the heat dissipation fins 1a is located between the sheath 2b and the barrel 1, and the side of this heat dissipation fin 1a facing away from the barrel 1 and between the sheath 2b and the barrel 1 is arranged on the sheath 2b to effectively strengthen the strength of the sheath 2b, keep its structure relatively stable, and ensure the stable progress of the heat dissipation process.

[0031] In the actual product, the box opening of the box body 2 is arranged obliquely upward to facilitate the installation of the electronic components inside the control box.

[0032] The specific embodiments described in this text are only examples to illustrate the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. Structure of a three-phase motor control box. The motor includes a horizontally arranged barrel (1). The control box structure includes a box body (2) horizontally arranged on one side of the barrel (1). The box opening of the box body (2) faces away from the barrel (1), and a box cover (3) matching it is fixed at the box opening. An outlet (2a) is opened at the bottom of the box body (2). It is characterized in that, On the bottom wall of the box body (2), a sheath (2b) is vertically formed, and the sheath (2b) is located between the wire outlet (2a) and the barrel (1); the sheath (2b) is a rectangular cylindrical structure, and the length of the sheath (2b) extends along the axial direction of the barrel (1); on the bottom wall of the box body (2), a plurality of heat conduction holes (2c) for communicating the inner cavity of the box body (2) with the inner cavity of the sheath (2b) are further provided.

2. The structure of the three-phase motor control box according to claim 1, wherein The above-mentioned barrel (1) and box body (2) are of an integral structure.

3. The structure of the three-phase motor control box according to claim 1, characterized in that, The barrel (1) and the box body (2) are integrally formed by a casting method.

4. The three-phase motor control box structure according to claim 1 or 2 or 3, characterized in that, On the outer wall of the barrel (1), a circle of heat dissipation fins (1a) distributed along the circumferential direction of the barrel (1) is formed, and the length of the heat dissipation fins (1a) extends along the axial direction of the barrel (1).

5. The structure of the three-phase motor control box according to claim 4, characterized in that, One of the heat dissipation fins (1a) is located between the sheath (2b) and the barrel (1), and the side of the heat dissipation fin (1a) facing away from the barrel (1) is arranged on the sheath (2b).

6. The structure of the three-phase motor control box according to claim 1, characterized in that The plurality of heat conduction holes (2c) are distributed along the axial direction of the barrel (1).

7. The structure of the three-phase motor control box according to claim 6, characterized in that The heat conduction holes (2c) are straight holes.

8. The structure of the three-phase motor control box according to claim 7, characterized in that, The heat conduction holes (2c) are inclined.

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