CN216490109U

CN216490109U - Permanent magnet synchronous roller motor

Info

Publication number: CN216490109U
Application number: CN202123218418.4U
Authority: CN
Inventors: 李和良; 吴伟明; 陈幸; 阮森杰
Original assignee: Zhuji H&c Hiest Motor Co ltd
Current assignee: Zhuji H&c Hiest Motor Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-10
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a permanent magnet synchronous drum motor, it includes: fixed base, rotor cylinder, stator, main shaft and connecting cylinder. The rotor roller and the stator are mounted on the fixed base through the main shaft, the rotor roller is rotatably arranged on the main shaft, the rotor roller is of a hollow structure, the stator is contained in the rotor roller, the stator is sleeved on the connecting cylinder, and the connecting cylinder is sleeved on the main shaft. An air inlet channel is formed in the main shaft, and an air inlet and an air outlet are formed in the air inlet channel. The connecting cylinder is provided with a heat exchange cavity and an exhaust hole, and the exhaust hole is communicated with the heat exchange cavity. The utility model discloses a permanent magnetism synchronous drum motor, both make its inside stator can obtain effectual heat dissipation, can reduce the installation degree of difficulty again, conveniently carry out the later maintenance.

Description

Permanent magnet synchronous roller motor

Technical Field

The utility model relates to a cylinder motor technical field especially relates to a permanent magnet synchronous cylinder motor.

Background

The roller motor is often used as a power source for belt conveying, and has the characteristics of excellent performance, reliable operation, convenient maintenance and the like. The loss of the roller motor comprises copper loss, iron loss, stray loss and the like, wherein the copper loss and most of the iron loss are positioned on the stator side, and the internal structure of the roller motor with the internal stator structure is compact, so that the heat dissipation area of the internal stator is smaller than that of the external stator structure, the heat in the roller motor is not easy to dissipate, the heat in the roller motor is accumulated, and the temperature of the roller motor is overhigh during operation, so that the internal stator is damaged. At present, a roller motor mostly adopts a water cooling mode, but the cooling mode has high installation difficulty, and needs to be regularly checked and maintained, so that the phenomenon of water leakage and electric leakage is avoided, and the installation and maintenance cost is increased.

Therefore, how to design a permanent magnet synchronous roller motor can not only effectively dissipate heat of the stator inside the permanent magnet synchronous roller motor, but also reduce the installation difficulty, and facilitate later maintenance, which is a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a permanent magnet synchronous drum motor, both make its inside stator can obtain effectual heat dissipation, can reduce the installation degree of difficulty again, conveniently carry out the later maintenance.

The purpose of the utility model is realized through the following technical scheme:

a permanent magnet synchronous drum motor, comprising: the device comprises a fixed base, a rotor roller, a stator, a main shaft and a connecting cylinder; the rotor roller and the stator are mounted on the fixed base through the main shaft, the rotor roller is rotatably arranged on the main shaft, the rotor roller is of a hollow structure, the stator is accommodated in the rotor roller, the stator is sleeved on the connecting cylinder, and the connecting cylinder is sleeved on the main shaft;

the main shaft is provided with an air inlet channel, and the air inlet channel is provided with an air inlet and an air outlet; the connecting cylinder is provided with a heat exchange cavity and an exhaust hole, and the exhaust hole is communicated with the heat exchange cavity.

In one embodiment, the inner wall of the rotor drum is provided with a permanent magnet, the stator comprises an induction core, the induction core is sleeved on the connecting cylinder, and the induction core is matched with the permanent magnet.

In one embodiment, end covers are arranged at two ends of the rotor drum, the main shaft penetrates through the end covers, and a bearing is arranged between the main shaft and the end covers.

In one embodiment, a heat exchange cavity of the connecting cylinder is internally provided with a cooling fin, the cooling fin is attached to the inner wall of the connecting cylinder, and the stator is attached to the outer wall of the connecting cylinder.

In one embodiment, the number of the air outlet holes is multiple, and the air outlet holes are distributed in an annular array by taking the axis of the main shaft as a center; the main shaft is provided with a flow deflector which is of an annular structure, and the extending direction of the flow deflector is parallel to the direction of the central axis of the air outlet.

In one embodiment, the air outlet is in a cylindrical through hole structure, and the central axis of the air outlet is perpendicular to the axis of the main shaft.

In one embodiment, the air outlet is an inclined cylindrical through hole structure, and an included angle is formed between the central axis of the air outlet and the axis of the main shaft.

In one embodiment, the air outlet hole is in a threaded hole structure, and an air nozzle is arranged on the air outlet hole.

To sum up, the utility model discloses a permanent magnet synchronous roller motor both can make its inside stator can obtain effectual heat dissipation, can reduce this permanent magnet synchronous roller motor's the installation degree of difficulty again to the later maintenance is conveniently carried out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a partial sectional view (one) of a permanent magnet synchronous drum motor according to the present invention;

fig. 2 is a partial sectional view of the permanent magnet synchronous drum motor of the present invention (ii);

fig. 3 is a schematic structural diagram of a permanent magnet synchronous drum motor according to a first embodiment;

FIG. 4 is a partial cross-sectional view of the connector barrel and spindle of FIG. 2;

fig. 5 is a partial schematic structural view of a permanent magnet synchronous drum motor according to a second embodiment;

fig. 6 is a partial structural schematic diagram of a permanent magnet synchronous drum motor according to a third embodiment.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a permanent magnet synchronous drum motor 10, as shown in fig. 1 and fig. 2, it includes: a fixed base 100, a rotor drum 200, a stator 300, a main shaft 400, and a connection cylinder 500. The rotor drum 200 and the stator 300 are mounted on the fixed base 100 through the main shaft 400, the rotor drum 200 is rotatably disposed on the main shaft 400, the rotor drum 200 is a hollow structure, the stator 300 is accommodated in the rotor drum 200, the stator 300 is sleeved on the connecting cylinder 500, and the connecting cylinder 500 is sleeved on the main shaft 400. As shown in fig. 3, the main shaft 400 is provided with an air inlet passage 410, the air inlet passage 410 is provided with an air inlet 411 and an air outlet 412, the connecting cylinder 500 is provided with a heat exchange chamber 510 and an air outlet 520, and the air outlet 412 is communicated with the heat exchange chamber 510.

In this embodiment, as shown in fig. 3, the permanent magnet 210 is disposed on the inner wall of the rotor drum 200, the stator 300 includes an inductive core 310, the inductive core 310 is sleeved on the connecting cylinder 500, and the inductive core 310 is adapted to the permanent magnet 210. Further, end covers 220 are disposed at two ends of the rotor drum 200, the main shaft 400 is inserted into the end covers 220, and a bearing 221 is disposed between the main shaft 400 and the end covers 220. Furthermore, the end cap 220 at the end far from the air inlet channel 410 is provided with air holes (not shown) for balancing the air pressure inside and outside the rotor drum 200.

The utility model discloses a permanent magnetism synchronous drum motor 10 adopts the forced air cooling mode to dispel the heat, and its main theory of operation is as follows, please refer to fig. 1, fig. 2 and fig. 3 in the lump:

when the rotor drum 200 works, the induction core 310 is electrified to generate a magnetic field, and the permanent magnet 210 on the rotor drum 200 rotates under the action of the magnetic field, so that the rotor drum 200 is driven to rotate together. In the working process, the temperature of the induction core 310 of the stator 300 gradually rises, and as the induction core 310 is sleeved on the connecting cylinder 500, the high temperature of the stator 300 is transferred to the cylinder wall of the connecting cylinder 500;

the air inlet passage 410 of the main shaft 400 is communicated with an external fan, the fan blows cold air into the air inlet passage 410 from the air inlet 411, and the cold air enters the heat exchange chamber 510 through the air outlet 412 because the air outlet 412 is communicated with the heat exchange chamber 510. The cold air contacts with the wall of the connecting cylinder 500 in the heat exchange chamber 510, so as to exchange heat with the high-temperature connecting cylinder 500 (i.e. cool the connecting cylinder 500); subsequently, the cold air absorbs heat to become warm air and is discharged out of the heat exchange chamber 510 through the exhaust holes 520, and finally is discharged into the atmosphere through the ventilation holes of the end cap 220. Cool down connecting cylinder 500, alright with cooling down stator 300 indirectly to effectively dispel the heat to stator 300, prevent that during operation stator 300 high temperature from causing the damage.

It should be noted that, by using the air cooling method to dissipate heat, the stator 300 can be effectively dissipated, and the installation difficulty can be reduced. Compared with a water cooling mode, the air cooling mode does not need to install a complex pipeline and does not need to perform anti-leakage water treatment on the pipeline, so that the installation difficulty is reduced, and the permanent magnet synchronous roller motor 10 is convenient to perform later maintenance.

In order to improve the heat dissipation effect, the utility model discloses a permanent magnet synchronous roller motor 10 has still made some special designs. In the present embodiment, as shown in fig. 4, the heat exchange chamber 510 of the connector barrel 500 is provided with the heat radiating fins 511, the heat radiating fins 511 are attached to the inner wall of the connector barrel 500, and the stator 300 is attached to the outer wall of the connector barrel 500. This allows the temperature of the connector barrel 500 to be transferred to the heat radiating fins 511, thereby increasing the contact area of the heat radiating fins 511 with the cool air in the heat exchange chamber 510, and thus improving the efficiency of heat exchange.

Further, the number of the air outlet holes 412 is multiple, and the multiple air outlet holes 412 are distributed in an annular array by taking the axis of the main shaft 400 as a center; meanwhile, in some embodiments, as shown in fig. 4, the guide vane 420 is disposed on the main shaft 400, the guide vane 420 has an annular structure, the guide vane 420 extends outward around the axis of the main shaft 400, and the extending direction of the guide vane 420 is parallel to the central axis of the air outlet 412.

The following will be described in detail by way of a few examples:

the first embodiment is as follows:

as shown in fig. 3, the outlet 412 is a cylindrical through hole structure, and the central axis of the outlet 412 is perpendicular to the axis of the main shaft 400. After the cold air enters the air inlet channel 410, the cold air is squeezed into the heat exchange cavity 510 from the air outlet 412 under the action of air pressure; the cool air introduced into the heat exchange chamber 510 is first blocked and guided by the guide vane 420 so that the cool air is closer to the wall of the connector 500, and then the connector 500 is cooled.

Example two:

as shown in fig. 5, the outlet 412 is an inclined cylindrical through hole structure, and the central axis of the outlet 412 forms an included angle with the axis of the main shaft 400. After the cold air enters the air inlet channel 410, the cold air is extruded into the heat exchange cavity 510 from the air outlet 412 under the action of air pressure, and because the air outlet 412 is of an inclined structure and the extending direction of the baffle 420 is parallel to the central axis direction of the air outlet 412 (i.e. the baffle 420 is also inclined), the cold air entering the heat exchange cavity 510 is blocked and guided by the baffle 420, and is blown to the wall of the connecting cylinder 500. Also, since the heat radiating fins 511 are attached to the inner wall of the connector barrel 500, cool air enters a gap between the two heat radiating fins 511, thereby more rapidly taking heat away from the connector barrel 500.

Example three:

as shown in fig. 6, the air outlet 412 is a threaded hole structure, and an air nozzle 413 is disposed on the air outlet 412. After cold air got into inlet air duct 410, cold air was crowded into air nozzle 413 from exhaust vent 412 under the atmospheric pressure effect, because the setting of air nozzle 413, can lead to producing the atmospheric pressure difference between inlet air duct 410 and the heat exchange chamber 510, like this, when cold air in inlet air duct 410 got into heat exchange chamber 510, can form quick cold air current, fin 511 will block and lead this cold air current afterwards, thereby make cold air pass through fin 511 fast, along with the gas velocity of flow accelerates, then cold air can take away the heat of connecting cylinder 500 rapidly.

To sum up, the utility model discloses a permanent magnet synchronous drum motor 10 both can make its inside stator 300 can obtain effectual heat dissipation, can reduce permanent magnet synchronous drum motor 10's the installation degree of difficulty again to conveniently carry out the later maintenance.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A permanent magnet synchronous drum motor, comprising: the device comprises a fixed base, a rotor roller, a stator, a main shaft and a connecting cylinder; the rotor roller and the stator are mounted on the fixed base through the main shaft, the rotor roller is rotatably arranged on the main shaft, the rotor roller is of a hollow structure, the stator is accommodated in the rotor roller, the stator is sleeved on the connecting cylinder, and the connecting cylinder is sleeved on the main shaft;

2. The permanent magnet synchronous drum motor according to claim 1, wherein the inner wall of the rotor drum is provided with a permanent magnet, the stator comprises an induction core, the induction core is sleeved on the connecting cylinder, and the induction core is matched with the permanent magnet.

3. The permanent magnet synchronous drum motor according to claim 2, wherein end caps are provided at both ends of the rotor drum, the main shaft is inserted through the end caps, and a bearing is provided between the main shaft and the end caps.

4. The permanent magnet synchronous drum motor according to claim 2, wherein a heat-exchanging cavity of the connecting cylinder is provided with a heat-radiating fin, the heat-radiating fin is attached to an inner wall of the connecting cylinder, and the stator is attached to an outer wall of the connecting cylinder.

5. The permanent magnet synchronous roller motor according to claim 1, wherein the number of the air outlet holes is plural, and the plural air outlet holes are distributed in an annular array with the axis of the main shaft as a center; the main shaft is provided with a flow deflector which is of an annular structure, and the extending direction of the flow deflector is parallel to the direction of the central axis of the air outlet.

6. The PMSM roller motor according to claim 5, wherein the air outlet is a cylindrical through hole structure, and a central axis of the air outlet is perpendicular to an axis of the main shaft.

7. The PMSM of claim 5, wherein the air outlet is an inclined cylindrical through hole structure, and a central axis of the air outlet forms an included angle with an axis of the main shaft.

8. The PMSM of claim 5, wherein the air outlet is a threaded hole structure with an air nozzle.