CN102931767A - A high-efficiency ventilation system and its assembly process applied to high-voltage DC motors - Google Patents

Abstract

The invention relates to a motor assembly, in particular to a high-efficiency ventilation system applied to a high-voltage direct-current motor and an assembly process thereof.A shell comprises a front shell, a shell body and a rear shell assembly, wherein the front shell is a round cover with a central shaft hole and integrally formed with a cylindrical air guide pipe; the fan blades of the axial flow fan are assembled on one end of the rotating shaft of the rotor assembly in the outward opening direction, the outer side of the front shell is positioned on one end of the rotating shaft of the rotor assembly, and the fan blades are contracted inside the air guide pipe, so that air flow passing through the motor can be completely discharged through the axial flow fan, and the heat dissipation efficiency is greatly improved.

Description

A high-efficiency ventilation system and its assembly process applied to high-voltage DC motors

technical field

The invention relates to a motor assembly, in particular to a high-efficiency ventilation system applied to a high-voltage DC motor and its assembly process.

Background technique

With the development of science and technology, the motor has become an indispensable driving source in the industry. The current motor mainly includes a casing, a base, a front casing, a rear casing, a stator, and a rotor. The stator (that is, the magnet group) is installed inside the casing. , then install the rotor axially inside the casing stator, then the front casing is installed on the top of the casing, then the axial flow fan is installed on the front end of the rotor shaft passing through the front casing, the rear casing is installed on the bottom of the casing, and then through the screw The rear shell and the front shell are fixedly installed; the heat dissipation of the motor can only be achieved through the rotation of the axial flow fan to promote air flow for heat dissipation, but the rotation of the axial flow fan only drives part of the airflow inside the motor, and part of the airflow comes from the outside of the motor. The air flow is also formed along with the rotation of the axial flow fan, thereby causing the heat dissipation function of the axial flow fan to decline, and then the power of the motor is limited and the service life is short.

Contents of the invention

In order to solve the above problems, the present invention aims at the deficiencies of the prior art and designs a high-efficiency ventilation system for high-voltage DC motors and its assembly process.

In order to achieve the above purpose, the present invention adopts a high-efficiency ventilation system and its assembly process applied to high-voltage DC motors. The high-voltage DC motor mainly includes a housing, a rotor assembly, and an axial fan. The housing includes a front housing, Shell body and rear shell assembly, in which the front shell is a round cover with a shaft hole and a cylindrical air duct integrally formed in the center, and the rear shell assembly is a round end cover with a shaft hole in the center and two symmetrical U-shaped brackets. , the shaft hole is equipped with a bearing, and a carbon brush seat is arranged between the bracket and the bracket.

The round cover is provided with a plurality of centrally symmetrical through holes.

The U-shaped bracket is provided with screw holes.

The round cover is provided with screw holes corresponding to the screw holes on the bracket.

A magnet block is provided on the inner wall of the shell.

A high-efficiency ventilation system applied to a high-voltage DC motor and its assembly process. The assembly process mainly includes the following steps: arranging a magnet block on the inner wall of a housing body, installing a rotor assembly axially inside the magnet block, and axial flow The fan is installed on the front end of the rotating shaft, which is located outside the front shell and shrunk inside the air duct. The front end of the rotating shaft is matched with the bearing in the center of the front shell. The rotor assembly is fixed in the middle of the rotating shaft. The bearing assembly in the hole, and the carbon brush is installed on the back shell; after the screw is sleeved with the spring washer, the screw passes through the screw hole on the back shell assembly and directly penetrates through the gap between the magnet blocks and the screw hole of the front shell to realize screw connection Fixed, wherein the blades of the axial flow fan are installed on the shaft end of the rotor assembly in the direction of opening outwards. When the fan is running, the airflow enters from the rear shell end, and then is driven out from the front shell end through the fan.

The beneficial effects of the present invention are as follows: 1. Since the fan blades of the axial flow fan are installed on the shaft end of the rotor assembly in the direction of opening outward, when the fan is running, the air flow enters from the rear shell end and then is discharged from the front shell end through the fan; 2. In the present invention, the magnet block is arranged on the inner wall of the shell body, the rotor assembly is installed axially inside the magnet block, and the axial flow fan is assembled on the rotor assembly. The airflow passing through the motor can all be exhausted through the axial fan, which greatly improves the efficiency of heat dissipation; 3. Assemble the rotating shaft and the bearing in the center of the front shell correspondingly, and the other end of the rotating shaft of the rotor assembly is connected to the central shaft hole of the rear shell. Some bearings are assembled correspondingly; after setting the screw with the spring washer, the screw is passed through the screw hole on the rear shell assembly and directly penetrates through the gap between the magnet blocks and the screw hole of the front shell to realize screw connection and fixation, in which the rear shell assembly is the center The round end cover with shaft hole and two symmetrical U-shaped brackets are integrally formed, which greatly increases the air intake.

Description of drawings

Figure 1 is an exploded schematic view of the three-dimensional structure of the present invention.

Fig. 2 is the sectional structure schematic diagram of the present invention.

Air duct 1, screw hole 101, shaft hole 102, axial fan 103, ventilation hole 104, housing body 2, magnet block 201, rotating shaft 202, rotor assembly 203, carbon brush holder 301, U-shaped bracket 302, bearing 4.

Detailed ways

The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings: a high-efficiency ventilation system and its assembly process applied to high-voltage DC motors. The high-voltage DC motor mainly includes a housing, a rotor assembly 203, and an axial fan 103. The body includes a front shell, a shell body 2 and a rear shell assembly, wherein the front shell is a round cover integrally formed with a shaft hole 102 and a cylindrical air duct 1 in the center, and a plurality of centrally symmetrical ventilation holes 104 are arranged on the round cover. The rear shell assembly is a round end cover with a shaft hole 102 in the center and two symmetrical U-shaped brackets 302 are integrally formed, the shaft hole 102 is equipped with a bearing 4, and a carbon brush seat 301 is arranged between the bracket and the bracket; the magnet assembly The block 201 is arranged on the inner wall of the shell body 2, the rotor assembly 203 is axially installed inside the magnet block 201, the axial flow fan 103 is installed on the front end of the rotating shaft 202 outside the front shell and shrunk inside the air duct 1, and the front end of the rotating shaft 202 is in contact with the air duct 1. The bearing 4 located in the center of the front shell is assembled correspondingly, the rotor assembly 203 is fixedly installed in the middle of the rotating shaft 202, and the rear end of the rotating shaft 202 is assembled through the bearing 4 arranged in the central shaft hole 102 of the rear shell; The screw holes 101 provided on the U-shaped bracket 302 directly pass through the gaps between the magnet blocks 201 and the screw holes 101 provided on the front shell to realize screw connection and fixation.

The above is only a preferred embodiment of the structure of the present invention, and does not make any limitation to the technical scope of the present invention, so any technology according to the present invention refers to any minor modifications made to the above embodiments, equivalent changes and modifications, All still belong to the scope of the technical solution of the present invention.

Claims (6)

1. A high-efficiency ventilation system and its assembly process applied to a high-voltage DC motor. The high-voltage DC motor mainly includes a housing, a rotor assembly, and an axial fan. It is characterized in that: the housing includes a front housing, a housing body and The rear shell assembly, in which the front shell is a round cover integrally formed with a shaft hole and a cylindrical air duct in the center, and the rear shell assembly is a round end cover with a shaft hole in the center and two symmetrical U-shaped brackets integrally formed, the shaft hole Bearings are arranged inside, and carbon brush seats are arranged between the brackets. 2. A high-efficiency ventilation system applied to a high-voltage DC motor and its assembly process according to claim 1, characterized in that: the round cover is provided with a plurality of centrally symmetrical through holes. 3. A high-efficiency ventilation system applied to high-voltage DC motors and its assembly process according to claim 1, wherein the U-shaped bracket is provided with screw holes. 4. A high-efficiency ventilation system applied to high-voltage DC motors and its assembly process according to claim 1 or 2, characterized in that: the round cover is provided with screw holes corresponding to the screw holes on the bracket. 5. A high-efficiency ventilation system applied to a high-voltage DC motor and its assembly process according to claim 1, characterized in that: the inner wall of the housing body is provided with a magnet block. 6. A high-efficiency ventilation system and its assembly process applied to high-voltage DC motors, characterized in that the assembly process mainly includes the following steps: the magnet block is arranged on the inner wall of the housing body, and the rotor assembly is axially installed on the magnet Inside the block, the axial flow fan is installed on the front end of the rotating shaft outside the front shell and shrunk inside the air duct. The front end of the rotating shaft is matched with the bearing in the center of the front shell. The rotor assembly is fixedly installed in the middle of the rotating shaft. The rear end of the rotating shaft is set The bearing is assembled in the central shaft hole of the rear shell, and the carbon brush is installed on the rear shell; after the screw is set on the spring washer, the screw passes through the screw hole on the rear shell assembly and directly passes through the gap between the magnet block and the front shell The screw holes are screwed and fixed, and the fan blades of the axial flow fan are installed on the shaft end of the rotor assembly in the direction of outward expansion. When the fan is running, the airflow enters from the rear shell end, and then is discharged from the front shell end through the fan.

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