CN112039286A

CN112039286A - IP23 industrial ceiling fan motor with cooling air path structure

Info

Publication number: CN112039286A
Application number: CN202010854511.5A
Authority: CN
Inventors: 黄禄财; 夏加宽; 李俞; 陈伟
Original assignee: Guangdong Zhaoqing Deton Co ltd
Current assignee: Guangdong Zhaoqing Deton Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2020-12-04

Abstract

The invention discloses an IP23 industrial ceiling fan motor with a cooling air path structure, which comprises a shell, wherein the shell comprises an upper end cover, a rotor shell and a lower end cover, a stator shaft, a hub, a stator core and a rotor are sequentially arranged in the rotor shell along the center to the edge, a plurality of air inlet holes are formed in the upper end cover in a surrounding manner, a plurality of air outlet holes are formed in the lower end cover in a surrounding manner, a plurality of vent holes are formed in the hub, and a cooling air path main path is formed among the air inlet holes, the vent holes and the air outlet holes; still include the cooling wind path bypass, cooling wind path bypass and the parallelly connected intercommunication setting of cooling wind path main road, the cooling wind path bypass includes bypass air intake and the bypass air outlet that communicates the setting each other, the bypass air intake with be linked together through stator core's tank road between the bypass air outlet. The cooling air path main path and the cooling air path bypass are arranged in parallel in the motor, and a double-air-path structure is adopted, so that the cooling and heat dissipation effects of the motor can be greatly improved.

Description

IP23 industrial ceiling fan motor with cooling air path structure

Technical Field

The invention relates to the technical field of motor cooling air path design, in particular to an IP23 industrial ceiling fan motor with a cooling air path structure.

Background

In the motor design of the industrial ceiling fan, the traditional design usually adopts a transmission mode of "motor + speed reducer", as shown in fig. 1, a traditional motor 100, the traditional motor 100 is an internal rotor motor, and comprises a motor rotor 160, a motor stator 150 and a motor housing 140, the motor rotor 160 is arranged inside the motor stator 150, a motor rotor shaft 170 is arranged in the motor rotor 160, the output end of the motor rotor shaft 170 is connected with the speed reducer 200, and then the speed reducer shaft 210 passing through the speed reducer 200 is connected with fan blades. Since the motor operates at a high speed, the upper end of the motor rotor shaft 170 is cooled by the cooling fan 120 (self-cooling), and is covered by a fan cover 110, and the problem of motor temperature rise caused by motor loss heating is solved by blowing air against the motor by the cooling fan. However, since the fan is disposed outside the motor housing 140 and the cooling air flow 130 flows along the motor housing, the cooling effect on the interior of the motor is limited, and it cannot be ensured that the blown cooling air flow flows to the components inside the motor which generate heat quickly and efficiently.

Further, in the field of industrial fan technology, such conventional motors are inefficient and difficult to meet the high efficiency standards required by modern times. In the design of the modern industrial ceiling fan, a direct-drive scheme that a permanent magnet torque motor directly drives fan blades of the ceiling fan is usually adopted, and the high-efficiency motor has the characteristics of high efficiency and high power density, the corresponding loss density is also high, the temperature rise of each part of the motor is high, and particularly a stator winding is adopted. Compared with the traditional motor, the permanent magnet torque motor has higher and faster temperature rise in the operation process, and the problem of heating and temperature rise of the motor cannot be solved by the traditional self-cooling design under the condition. In order to ensure the safe and stable operation of the motor, a novel cooling structure design needs to be developed aiming at the characteristics of the permanent magnet torque motor.

Disclosure of Invention

The invention aims to provide an IP23 industrial ceiling fan motor with a cooling air path structure, which is characterized in that the cooling air path structure is additionally arranged in the motor on the basis of ensuring the IP23 protection structure, the cooling effect is good, the temperature rise of the motor can be effectively reduced, the operation efficiency of the motor is improved, the cooling air path structure is simple, and the production and manufacturing cost is low.

In order to solve the problems, the invention is realized according to the following technical scheme:

the invention provides an IP23 industrial ceiling fan motor with a cooling air path structure, which comprises a shell, wherein the shell comprises a rotor shell, an upper end cover arranged at the upper end of the rotor shell and a lower end cover arranged at the lower end of the rotor shell, a stator shaft, a hub, a stator core and a rotor are sequentially arranged in the rotor shell along the center to the edge, the hub and the stator core are fixedly connected on the stator shaft, and the rotor is fixedly connected on the rotor shell; the upper end cover is provided with a plurality of air inlet holes in a surrounding manner, the lower end cover is provided with a plurality of air outlet holes in a surrounding manner, the hub is provided with a plurality of air vent holes, and the air inlet holes, the air vent holes and the air outlet holes are communicated with one another to form a main cooling air path;

still include the cooling air path bypass, the cooling air path bypass includes bypass air intake and the bypass air outlet that communicates the setting each other, be provided with the tank circuit between a plurality of windings on the stator core, the bypass air outlet with the bypass air intake passes through the tank circuit is linked together, the bypass air intake with the fresh air inlet intercommunication sets up, the bypass air outlet with the exhaust vent intercommunication sets up.

Furthermore, a plurality of radial fan blades are arranged on the upper end cover.

Further, the radial fan blade central axes are symmetrically arranged.

Furthermore, a plurality of heat dissipation ribs are arranged on the rotor shell.

Compared with the prior art, the invention has the following beneficial effects:

according to the IP23 industrial ceiling fan motor with the cooling air path structure, the cooling air path structure is additionally arranged in the motor on the basis of ensuring the IP23 protection structure, the cooling air path structure is simple, the production and manufacturing cost is low, the cooling effect is good, the motor temperature rise can be effectively reduced, and the motor operation efficiency is improved. Preferably, the cooling air path structure comprises a cooling air path main path and a cooling air path bypass, and two cooling air paths connected in parallel are adopted, so that the motor achieves a good heat dissipation and cooling effect. And the design of the cooling wind path structure can be matched with the external inherent wind field, and the air flow in the cooling wind path is matched with the air flow of the inherent wind field, so that the wind resistance of the cooling wind path can be effectively reduced, and the cooling effect is improved.

Drawings

Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic view of a conventional electric machine according to the present invention;

FIG. 2 is a schematic view of an air path structure of an IP23 industrial ceiling fan motor with a cooling air path structure according to the present invention;

FIG. 3 is a schematic structural view of the upper end cap of the present invention;

FIG. 4 is a schematic view of the IP23 industrial ceiling fan motor with cooling air path structure;

FIG. 5 is a schematic view of the inherent wind field of the IP23 ceiling fan motor with cooling wind path structure according to the present invention;

in the figure:

100-a conventional motor; 110-a fan housing; 120-a cooling fan; 130-a cooling air flow; 140-a motor housing; 150-a motor stator; 160-motor rotor; 170-motor rotor shaft; 180-speed reducer; 190-the reducer shaft; 200-a housing; 210-upper end cover, 211-air inlet; 212-radial fan blades; 220-a rotor housing; 221-heat dissipation ribs; 230-lower end cap; 231-air outlet holes; 300-a stator shaft; 400-a hub; 410-a vent; 500-a stator core; 600-a rotor; 700-cooling air path main path; 800-cooling air path bypass; 810-bypass air intake; 820-bypass air outlet; 900-natural wind field airflow.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, a detailed description of the present application will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and the described embodiments are merely a subset of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings. 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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

As shown in fig. 2 to 5, an IP23 industrial ceiling fan motor with a cooling air path structure comprises a housing 200, wherein the housing 200 comprises a rotor 600 casing 220, an upper end cover 210 arranged at the upper end of the rotor 600 casing 220, and a lower end cover 230 arranged at the lower end of the rotor 600 casing 220, a stator shaft 300, a hub 400, a stator core 500, and a rotor 600 are sequentially arranged in the rotor 600 casing 220 along the center to the edge, the hub 400 and the stator core 500 are fixedly connected to the stator shaft 300, and the rotor 600 is fixedly connected to the rotor 600 casing 220; a plurality of air inlet holes 211 are circumferentially arranged on the upper end cover 210, a plurality of air outlet holes 231 are circumferentially arranged on the lower end cover 230, a plurality of vent holes 410 are arranged on the hub 400, and the air inlet holes 211, the vent holes 410 and the air outlet holes 231 are communicated with each other to form a main cooling air path 700.

The motor inhales the outside cold air of motor through the fresh air inlet 211 on the upper end cover 210, and the cold air enters into the cooling wind path main path 700 that the intercommunication formed between fresh air inlet 211, ventilation hole 410 and the exhaust vent 231, is favorable to the air to bring the heat in the motor out of the motor, reaches effectual cooling effect. And air convection can be formed between the upper and lower end covers 230, as shown in fig. 5, when the motor works, the external inherent wind field is matched to form a whole with the inherent wind field airflow 900, so that the wind resistance of the motor cooling wind path can be effectively reduced, the air intake of the air inlet holes 211 is increased, and the cooling and heat dissipation effects are improved.

Further, the stator core of the electric motor vehicle further includes a cooling air path bypass 800, the cooling air path bypass 800 includes a bypass air inlet 810 and a bypass air outlet 820 which are communicated with each other, a groove is formed between the plurality of windings on the stator core 500, and the bypass air outlet 820 is communicated with the bypass air inlet 810 through the groove. The bypass air inlet 810 is communicated with the air inlet 211, the bypass air outlet 820 is communicated with the air outlet 231, and the cold air outside the motor enters the housing 200 from the air inlet 211, and a part of the cold air flows to the cooling air path main path 700, and the other part of the cold air enters the cooling air path bypass 800 from the bypass air inlet 810 arranged on the upper end cover 210, passes through the slot path of the stator core 500, finally flows out from the bypass air outlet 820, converges to the cooling air path main path 700, and flows out of the housing 200 of the motor from the air outlet 231. By providing the cooling air path bypass 800, two parallel cooling air path structures are formed with the cooling air path main path 700, thereby further improving the cooling and heat dissipation effects of the motor. Moreover, when the motor operates, the stator winding generates heat seriously, and in this embodiment, by providing the cooling air path bypass 800, cold air outside the motor is introduced into the slot of the stator core 500, which is beneficial to cooling and heat dissipation of the stator winding in the stator core 500, thereby effectively solving the problem of high temperature rise of the stator winding, ensuring the stability of the motor in operation, and prolonging the service life of the motor.

The upper end cover 210 is provided with the plurality of radial fan blades 212, the plurality of radial fan blades 212 are uniformly distributed around the center of the upper end cover 210, and in the rotating process of the motor, the radial fan blades 212 can stir cold air input into the air inlet 211, so that the air pressure of the cooling air path main path 700 and the cooling air path bypass 800 is increased, the flowing speed of the cold air in the cooling air path is increased, and the cooling heat dissipation effect of the cooling air path is accelerated. Further, in the present embodiment, each radial fan blade 212 is disposed with a central axis symmetry, which satisfies the same stirring and pressurizing effect on the cool air in the housing 200 when the motor rotates forward and backward, further realizes the pressurizing effect on the cooling air path main path 700 and the cooling air path bypass 800, and increases the cooling effect of the cooling air path.

In order to further improve the cooling and heat dissipation efficiency of the motor, a plurality of heat dissipation ribs 221 are further arranged outside the rotor 600 casing 220, so that the heat dissipation area of the rotor 600 casing 220 is increased, the heat dissipation capacity of the rotor 600 casing 220 is effectively improved, and the overall heat dissipation efficiency of the motor is improved.

Specifically, in the design of the present embodiment, the wind resistance of the cooling air path main path 700 can be changed by adjusting the size of the ventilation holes 410 of the stator hub 400 according to the environmental characteristics of the operation of the motor, so as to change the air volume ratio between the cooling air path main path 700 and the cooling air path bypass 800, adjust the heat dissipation capacity of the inner side and the outer side of the stator, and optimize the comprehensive heat dissipation effect. In addition, in the cooling air path bypass 800, the full-slot ratio and the winding of the stator winding have a great influence on the wind resistance of the 500-slot path of the stator core, so that the wind resistance of the slot path, that is, the wind resistance of the cooling air path bypass 800 can be adjusted by adjusting the winding mode of the stator winding, the air volume ratio of the cooling air path main path 700 and the cooling air path bypass 800 can be changed, the heat dissipation capacity of the inner side and the outer side of the stator can be adjusted, and the optimal comprehensive heat dissipation effect can be achieved. Such design method also falls into the protection scope of the present invention.

While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that modifications and variations can be effected by one skilled in the art in light of the above teachings without undue experimentation. Therefore, any technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the present inventive concept should be within the scope of protection defined by the present claims.

Claims

1. An IP23 industrial ceiling fan motor with a cooling air path structure is characterized by comprising a shell, wherein the shell comprises a rotor shell, an upper end cover arranged at the upper end of the rotor shell and a lower end cover arranged at the lower end of the rotor shell, a stator shaft, a hub, a stator core and a rotor are sequentially arranged in the rotor shell along the center to the edge, the hub and the stator core are fixedly connected to the stator shaft, and the rotor is fixedly connected to the rotor shell; the upper end cover is provided with a plurality of air inlet holes in a surrounding manner, the lower end cover is provided with a plurality of air outlet holes in a surrounding manner, the hub is provided with a plurality of air vent holes, and the air inlet holes, the air vent holes and the air outlet holes are communicated with one another to form a main cooling air path;

2. The IP23 industrial ceiling fan motor with cooling air path structure of claim 1, wherein the upper end cap is provided with radial blades.

3. The IP23 industrial ceiling fan motor with cooling air path structure of claim 2, wherein the radial blades are arranged with central axis symmetry.

4. The IP23 industrial ceiling fan motor with cooling air path structure of claim 1, wherein the rotor housing has heat dissipating ribs.