CN210053328U - Energy-saving three-phase asynchronous motor - Google Patents

Abstract

The utility model discloses an energy-conserving three-phase asynchronous motor, including the motor main part, dustproof safety cover and heat abstractor, the outside of motor main part is connected with the inboard of dustproof safety cover, and the left end of motor main part is connected with heat abstractor's right-hand member, the outside of motor main part is provided with the casing, and the right-hand member of motor main part rotates and is connected with the drive shaft, the side of casing is provided with radiating fin, its front end is provided with the inlet port, and the inlet port is for leaking hopper-shaped, heat abstractor's first fan sets up at the left end middle part of motor main part, first fan is through first gear, the second gear, the action wheel, driving belt can drive the second fan rotation from the driving wheel, the second fan sets up the space left end between motor main. The energy-saving three-phase asynchronous motor is simple in structure, can effectively dissipate heat of the three-phase asynchronous motor, is uniform in heat dissipation, improves the working stability of the asynchronous motor, and prolongs the service life of the asynchronous motor.

Description

An energy-saving three-phase asynchronous motor

technical field

The utility model relates to the technical field of three-phase asynchronous motors, in particular to an energy-saving three-phase asynchronous motor.

Background technique

Three-phase asynchronous motor is a kind of induction motor. It is a type of motor powered by 380V three-phase AC current (phase difference of 120 degrees) at the same time. Because the rotor and stator of the three-phase asynchronous motor rotate in the same direction and different The speed of the motor turns into rotation, and there is a slip rate, so it is called a three-phase asynchronous motor. The rotational speed of the rotor of the three-phase asynchronous motor is lower than the rotational speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion between the rotor winding and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to realize energy conversion.

Most of the existing three-phase asynchronous motors adopt the method of tail cooling, which has low efficiency and uneven heat dissipation. The uneven heat dissipation of asynchronous motors will affect the service life of asynchronous motors. At present, there are also liquid cooling methods. It is a three-phase asynchronous motor with air cooling and heat dissipation, but the cost and maintenance cost of this asynchronous motor are high, and the energy consumption is large.

Utility model content

The purpose of the utility model is to provide an energy-saving three-phase asynchronous motor, which achieves a good heat dissipation effect.

In order to achieve the above purpose, the utility model provides the following technical solutions: an energy-saving three-phase asynchronous motor, comprising a motor body, a dust-proof protective cover and a heat dissipation device, the outer side of the motor body is connected with the inner side of the dust-proof protective cover, and the The left end of the motor body is connected with the right end of the heat sink;

The motor body is composed of a casing, a drive shaft, a heat dissipation fin, an air intake plate, an air intake hole and a mounting frame. The outer part of the motor body is provided with a casing, and a drive shaft is rotatably connected to the right end of the motor body. , the side of the casing is provided with cooling fins, the left end and the right end of the motor body are respectively fixed with a mounting frame and an air intake plate, and the air intake plate is provided with air intake holes;

The dust protection cover is composed of a front protection cover, a middle protection cover, a tail protection cover, a bearing, a dust filter and a heat dissipation hole. The right, middle and left ends of the dust protection cover are respectively provided with a front protection cover, a middle protection a protective cover and a rear protective cover, the front protective cover and the middle protective cover are connected by screws, the middle protective cover and the rear protective cover are connected by bolts, the right end of the drive shaft passes through the front protective cover, and The drive shaft is sleeved with a bearing at the front end protective cover, a dust filter screen is fixedly installed on the front end protective cover, and a heat dissipation hole is opened on the rear protective cover;

The cooling device is composed of a first fan, a rotating shaft, a first gear, a second gear, a driving wheel, a transmission belt, a driven wheel, a second fan and a fan mounting bracket, and the first fan is arranged in the middle of the left end of the motor body, The middle part of the first fan is fixedly connected with a rotating shaft, the right side of the rotating shaft is fixedly installed with a first gear, the outer teeth of the first gear are engaged with a second gear, and the middle part of the second gear is fixedly connected with a rotating shaft. The right side of the rotating shaft is fixedly installed with a driving wheel, the driving wheel is connected with a driven wheel through a transmission belt, and the driven wheel is arranged at a position close to the outside of the motor body, and the right side of the driven wheel is rotatably connected There is a second fan, the second fan is arranged on the fan mounting frame, one end of the fan mounting frame is fixedly mounted on the outer side of the casing, and the other end is fixedly mounted on the inner side of the middle protective cover.

Preferably, the air intake hole is funnel-shaped, and the end of the air intake hole with a larger diameter is disposed outside the air intake plate, and the end of the air intake hole with a smaller diameter is disposed on the air intake plate close to the main body of the motor. side.

Preferably, the rotating shaft of the second gear is rotatably connected to the installation frame, and the installation frame is provided with a ventilation opening.

Preferably, the number of the second fans is 4, the second fans are arranged at the left end of the gap between the casing and the middle protective cover, and are evenly distributed around the axis of the motor body.

Preferably, the air inlet ends of the first fan and the second fan are streamlined.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The energy-saving three-phase asynchronous motor achieves the effect of reducing the air stability inside the motor today by arranging funnel-shaped air intake holes on the air intake plate. The funnel-shaped air intake allows the air to be compressed when it enters the motor, and the compressed air can be reduced in temperature. Experiments have shown that this funnel-shaped structure can effectively reduce the temperature by 4 to 5 degrees, which improves the traditional motor cooling device only. The limitation that the heat can be taken away by the airflow improves the heat dissipation performance of the asynchronous motor.

(2) The energy-saving three-phase asynchronous motor is provided with a plurality of fans at the tail, which achieves the purpose of dissipating heat to the motor as a whole. The outer side of the motor is provided with cooling fins, the heat conducted by the cooling fins is taken away by the second fan at the left end of the outer side, and the heat of the main body is taken away by the larger first fan, which improves the overall heat dissipation performance of the motor and makes the heat dissipation It is more uniform, simple in structure and low in energy consumption.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a schematic structural diagram of the cooling device of the present invention;

FIG. 3 is a schematic diagram of the structure of the air inlet hole of the present invention.

In the figure: 1 motor body, 101 housing, 102 drive shaft, 103 cooling fins, 104 air intake plate, 105 air intake holes, 106 mounting bracket, 2 dust protection cover, 201 front protection cover, 202 middle protection cover, 203 rear protective cover, 204 bearing, 205 dust filter, 206 cooling hole, 3 cooling device, 301 first fan, 302 rotating shaft, 303 first gear, 304 second gear, 305 driving wheel, 306 transmission belt, 307 slave Moving wheel, 308 second fan, 309 fan mounting bracket.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, the present utility model provides a technical solution: an energy-saving three-phase asynchronous motor, comprising a motor body 1, a dust protection cover 2 and a heat sink 3, the outer side of the motor body 1 and the dust protection cover 2 The inner side of the motor body 1 is connected to the left end of the motor body 1 and the right end of the heat sink 3 is connected.

The motor body 1 is composed of a casing 101, a drive shaft 102, a heat dissipation fin 103, an air intake plate 104, an air intake hole 105 and a mounting frame 106. The outer part of the motor body 1 is provided with a casing 101, and the right end of the motor body 1 rotates The drive shaft 102 is connected, the side of the casing 101 is provided with heat dissipation fins 103, the heat dissipation fins 103 can conduct the internal heat to the outer surface, the left end and the right end of the motor body 1 are respectively fixed with a mounting frame 106 and an air intake plate 104 , the air intake plate 104 is provided with an air intake hole 105, the air intake hole 105 is funnel-shaped, and the funnel-shaped air intake hole 105 allows the air to be compressed when entering the interior of the motor body 1, and the compressed air can be reduced in temperature. Experiments have shown that this funnel-shaped structure can effectively reduce the temperature of 4 to 5 degrees. When used in the field of motor heat dissipation, it can improve the limitation of traditional motor heat dissipation devices that can only take away heat through airflow, and improve the heat dissipation performance of asynchronous motors. The end of the hole 105 with the larger diameter is disposed outside the air intake plate 104 , and the end of the air intake hole 105 with the smaller diameter is disposed on the side of the air intake plate 104 close to the motor body 1 .

The dust protection cover 2 is composed of a front protection cover 201, a middle protection cover 202, a tail protection cover 203, a bearing 204, a dust filter 205 and a heat dissipation hole 206. The right, middle and left ends of the dust protection cover 2 are respectively provided with front ends The protective cover 201, the middle protective cover 202 and the rear protective cover 203, the front protective cover 201 and the middle protective cover 202 are connected by screws, the middle protective cover 202 and the rear protective cover 203 are connected by bolts, and the right end of the drive shaft 102 is threaded. Passing through the front end protection cover 201, and the drive shaft 102 is located at the front end protection cover 201 and sleeved with a bearing 204, the front end protection cover 201 is fixedly installed with a dust filter 205, the dust filter 205 can filter dust and protect the internal parts of the motor, In addition, the screw connection makes it easy to disassemble and assemble the front protective cover 201 , and the rear protective cover 203 is provided with a heat dissipation hole 206 .

The cooling device 3 is composed of a first fan 301, a rotating shaft 302, a first gear 303, a second gear 304, a driving wheel 305, a transmission belt 306, a driven wheel 307, a second fan 308 and a fan mounting frame 309. The first fan 301 is provided with In the middle of the left end of the motor main body 1, a rotating shaft 302 is fixedly connected to the middle of the first fan 301, a first gear 303 is fixedly installed on the right side of the rotating shaft 302, and a second gear 304 is engaged with the outer teeth of the first gear 303. The second gear The middle part of 304 is fixedly connected with a rotating shaft, and the rotating shaft of the second gear 304 is rotatably connected to the mounting frame 106, and the mounting frame 106 is provided with a ventilation opening, and the right side of the rotating shaft is fixedly installed with a driving wheel 305, and the driving wheel 305 passes through. The drive belt 306 is connected with a driven pulley 307, and the driven pulley 307 is arranged at a position close to the outside of the motor body 1. A second fan 308 is rotatably connected to the right side of the driven pulley 307. The number of the second fans 308 is 4. The second fan 308 is arranged at the left end of the gap between the casing 101 and the middle protective cover 202, and is evenly distributed around the axis of the motor body 1, the second fan 308 is arranged on the fan mounting frame 309, and one end of the fan mounting frame 309 is fixedly mounted on the casing 101 outside, and the other end is fixedly installed inside the middle protective cover 202, and the air inlet ends of the first fan 301 and the second fan 308 are streamlined. The outer side of the motor body 1 is provided with heat dissipation fins 103, the heat conducted by the heat dissipation fins 103 is taken away by the second fan 308 at the left end of the outer side, and the heat of the main body is taken away by the larger first fan 303, which improves the overall performance of the motor. The heat dissipation performance makes the heat dissipation more uniform, the structure is simple, and the energy consumption is small. At the same time, the working stability of the asynchronous motor is improved, and its service life is also prolonged.

The electrical components appearing in this article are all connected with the external main controller and 220V mains, and the main controller can be a conventional known device controlled by a computer or the like.

When in use, the air flow passes through the dust filter 205 of the front protection cover 201 to filter the dust at one end, which protects the internal parts, and when the dust filter 205 needs to be cleaned and replaced, it can be rotated and twisted. Then, when the air flow passes through the funnel-shaped air intake hole 105, the air is compressed and the temperature is lowered to a certain extent. When a large amount of heat is generated by the operation of the motor, a part of the heat is conducted to the outside of the motor body 1 through the heat dissipation fins 103, and is taken away by the second fan 308, and the other part is taken away by the first fan 301 at the rear end. The first fan 301 is driven by the drive shaft 102 , and then driven by the rotating shaft 302 , the first gear 303 , the second gear 304 , the driving pulley 305 , the transmission belt 306 and the driven pulley 307 to make the second fan 308 rotate.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. An energy-saving three-phase asynchronous motor, comprising a motor body (1), a dust protection cover (2) and a heat sink (3), characterized in that: the outer side of the motor body (1) is connected to a dust protection cover ( 2) is connected to the inner side, and the left end of the motor body (1) is connected to the right end of the heat sink (3); The motor body (1) is composed of a casing (101), a drive shaft (102), a heat dissipation fin (103), an air intake plate (104), an air intake hole (105) and a mounting bracket (106). A casing (101) is provided on the outside of the motor body (1), and a drive shaft (102) is rotatably connected to the right end of the motor body (1), and cooling fins (103) are provided on the side of the casing (101). ), a mounting bracket (106) and an air intake plate (104) are fixedly installed on the left end and the right end of the motor body (1), respectively, and an air intake hole (105) is opened on the air intake plate (104); The dust protection cover (2) is composed of a front protection cover (201), a middle protection cover (202), a tail protection cover (203), a bearing (204), a dust filter (205) and a heat dissipation hole (206) , the right, middle and left ends of the dust protection cover (2) are respectively provided with a front protection cover (201), a middle protection cover (202) and a tail protection cover (203). The protective covers (202) are connected by screws, the middle protective cover (202) and the rear protective cover (203) are connected by bolts, and the right end of the drive shaft (102) passes through the front protective cover (201), And the drive shaft (102) is sleeved with a bearing (204) at the front end protective cover (201), a dust filter (205) is fixedly installed on the front end protective cover (201), and the rear protective cover ( 203) is provided with cooling holes (206); The cooling device (3) consists of a first fan (301), a rotating shaft (302), a first gear (303), a second gear (304), a driving wheel (305), a transmission belt (306), and a driven wheel (307) ), a second fan (308) and a fan mounting bracket (309), the first fan (301) is arranged in the middle of the left end of the motor body (1), and the middle of the first fan (301) is fixedly connected with a rotating shaft (302), a first gear (303) is fixedly installed on the right side of the rotating shaft (302), a second gear (304) is engaged with the outer teeth of the first gear (303), and the second gear (304) ) is fixedly connected with a rotating shaft, the right side of the rotating shaft is fixedly installed with a driving wheel (305), the driving wheel (305) is connected with a driven wheel (307) through a transmission belt (306), and the The driven wheel (307) is arranged at a position close to the outside of the motor body (1). The right side of the driven wheel (307) is rotatably connected to a second fan (308), and the second fan (308) is arranged on the fan mounting frame ( 309), one end of the fan mounting bracket (309) is fixedly installed on the outside of the casing (101), and the other end is fixedly installed on the inside of the middle protective cover (202). 2. An energy-saving three-phase asynchronous motor according to claim 1, characterized in that: the air inlet hole (105) is funnel-shaped, and the end of the air inlet hole (105) with a larger diameter is set at the inlet On the outside of the air plate (104), the end of the air inlet hole (105) with a smaller diameter is arranged on the side of the air inlet plate (104) close to the motor body (1). 3. An energy-saving three-phase asynchronous motor according to claim 1, characterized in that: the rotating shaft of the second gear (304) is rotatably connected to the mounting frame (106), and the mounting frame (106) Open with vents. 4. An energy-saving three-phase asynchronous motor according to claim 1, characterized in that: the number of the second fans (308) is 4, and the second fans (308) are arranged in the casing (101) and the left end of the gap between the middle protective cover (202), and evenly distributed around the axis of the motor body (1). 5 . The energy-saving three-phase asynchronous motor according to claim 1 , wherein the air inlet ends of the first fan ( 301 ) and the second fan ( 308 ) are streamlined. 6 .

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