Integrated motor with forced air cooling structure

Abstract

The application relates to the field of integrated motors, in particular to an integrated motor with forced air cooling structure, which comprises a motor body, a heat dissipation mechanism and a heat dissipation fan, specifically, the heat dissipation fan is arranged at the middle position of a connecting shell, the inside of the connecting shell is provided with a flow guide mechanism for guiding the airflow blown out by the heat dissipation fan, the outer surface of the outer heat conduction sheet is provided with a plurality of air holes, the air holes penetrate through the outer heat conduction sheet and are communicated with the air outlet of the flow guide mechanism. The outer heat conduction sheet and the flow guide mechanism are arranged, the heat dissipation sheet inside is provided with cooling treatment, the heat dissipation of the heat conduction sheet is faster, the airflow discharged by the heat dissipation fan is guided by the flow guide mechanism, the airflow can not only pass through the heat conduction sheet inside but also pass through the motor body, the heat is taken away from the surface of the motor body, heat dissipation is carried out through the double-airflow outlet, and the problem of heat accumulation is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of integrated motor, in particular to an integrated motor with forced air cooling structure. BACKGROUND

[0002] The integrated motor generally refers to an integrated structure integrating an encoder, a driver and a motor, and the forced air cooling generally refers to a way of accelerating airflow flow by a cooling fan to cool the equipment.

[0003] Due to the close structure and the high temperature generated by the motor itself during operation, the heat dissipation of the motor itself is particularly important. The existing way is generally through air cooling, that is, a cooling fan is installed at the tail of the motor, the heat of the motor body is conducted out through a heat conduction sheet, and the cooling fan blows the external cold air into the heat conduction sheet to achieve the purpose of cooling the heat conduction sheet, thereby forming the effect of cooling the motor body. Although this setting can meet the demand, the gas flow of the cooling fan is towards the heat conduction sheet, so that the cooling fan cannot bypass the heat conduction sheet for heat dissipation even if the heat is accumulated in the heat conduction sheet or the motor body, and the heat dissipation effect is affected by the heat conduction efficiency of the heat conduction sheet. SUMMARY

[0004] The present application provides an integrated motor with forced air cooling structure to solve the problems in the prior art, and the specific technical solutions are as follows.

[0005] An integrated motor with forced air cooling structure comprises a motor body, a heat dissipation mechanism and a cooling fan.

[0006] Specifically, the heat dissipation mechanism comprises an outer heat conduction sheet fixed to the motor body and a connecting shell fixed to the outer side of the outer heat conduction sheet, the cooling fan is arranged at the middle position of the connecting shell, the inner part of the connecting shell is provided with a flow guide mechanism for guiding the airflow blown out by the cooling fan, the outer surface of the outer heat conduction sheet is provided with a plurality of air holes, and the air holes penetrate through the outer heat conduction sheet and are communicated with the air outlet of the flow guide mechanism.

[0007] As an improvement of the above technical solution, the inner wall of the connecting shell is provided with a plurality of inner heat conduction sheets arranged in a ring shape, the upper surface and the lower surface of the outer heat conduction sheet are provided with connecting rings, the cross section of the connecting ring is L-shaped, the upper connecting ring is detachably fixed to the connecting shell, the lower connecting ring is detachably fixed to the motor body, and the inner wall of the inner heat conduction sheet is tightly attached to the connecting ring.

[0008] As an improvement of the above technical solution, the inner wall of the inner heat conduction sheet is fixed with a second filter screen in a ring shape, the inner ring of the second filter screen is fixed with a first filter screen in a tubular shape, the cooling fan is fixed to the inner wall of the first filter screen, the side surface of the connecting shell away from the motor body is provided with an air inlet net, and the cooling fan inhales air from the air inlet net.

[0009] As the improvement of the above technical scheme, the flow guide mechanism comprises a sealing plate fixed below the first filter screen, a flow guide portion is arranged on the outer side of the sealing plate, the flow guide portion is annular structure with U-shaped cross section, the flow guide portion is separated from the outer heat conduction sheet to form a U-shaped flow channel, one end of the U-shaped flow channel is communicated with the cooling fan, and the other end of the U-shaped flow channel is communicated with the air holes.

[0010] As the improvement of the above technical scheme, the flow guide mechanism comprises a sealing plate fixed below the first filter screen, a flow guide portion is arranged on the outer side of the sealing plate, the flow guide portion is annular structure with U-shaped cross section, the flow guide portion is separated from the outer heat conduction sheet to form a U-shaped flow channel, one end of the U-shaped flow channel is communicated with the cooling fan, and the other end of the U-shaped flow channel is communicated with the air holes.

[0011] As the improvement of the above technical scheme, the flow guide mechanism comprises a sealing plate fixed below the first filter screen, a flow guide portion is arranged on the outer side of the sealing plate, the flow guide portion is annular structure with U-shaped cross section, the flow guide portion is separated from the outer heat conduction sheet to form a U-shaped flow channel, one end of the U-shaped flow channel is communicated with the cooling fan, and the other end of the U-shaped flow channel is communicated with the air holes.

[0012] The beneficial effects of the present application are as follows:

[0013] The outer heat conduction sheet and the flow guide mechanism are arranged, and two kinds of heat dissipation structures are combined, that is, heat is dissipated through the traditional heat conduction sheet, and at the same time, air flows through the inside of the heat conduction sheet, the inside of the heat conduction sheet is cooled, heat of the heat conduction sheet is dissipated faster, the air flow discharged by the cooling fan is guided by the flow guide mechanism, the air flow can pass through the inside of the heat conduction sheet and pass through the motor body, heat is taken away from the surface of the motor body, heat dissipation is performed through the double air outlet, the problem of heat accumulation is effectively avoided, and the heat dissipation efficiency is not only affected by the heat conduction sheet, but also affected by the rotation frequency of the fan, the faster the rotation speed, the faster the air flow speed, thereby forming a forced air cooling structure with better heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structure of the present application is shown in the figure;

[0015] Figure 2 The front view of the present application is shown in the figure;

[0016] Figure 3 The top view of the present application is shown in the figure

[0017] Figure 4 The cross-sectional view of the present application is shown in the figure;

[0018] Figure 5 The structure of the present application is shown in the figure; Figure 4 The enlarged view of A in the figure;

[0019] Figure 6 The structure of the second embodiment of the outer heat conduction sheet of the present application is shown in the figure.

[0020] 10, motor body; 11, driving shaft; 20, heat dissipation mechanism; 21, connecting shell; 211, air inlet net; 212, inner heat conduction sheet; 22, outer heat conduction sheet; 221, inner cavity; 222, air hole; 223, branch channel; 224, gas flow channel; 23, sealing plate; 231, flow guiding part; 232, U-shaped flow channel; 233, first filter screen; 234, second filter screen; 24, connecting ring; 25, heat dissipation fan. DETAILED DESCRIPTION

[0021] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0022] The existing forced air cooling structure generally refers to that a heat dissipation fan is installed at the tail of the motor, the heat of the motor body is conducted out through the heat conduction sheet, the external cold air is blown into the heat conduction sheet by the heat dissipation fan, the heat conduction sheet is cooled, and the effect of cooling the motor body is achieved. Although this setting can meet the demand, the gas flow of the heat dissipation fan is towards the heat conduction sheet, and the heat dissipation fan cannot bypass the heat conduction sheet to dissipate heat even if the internal heat of the heat conduction sheet or the motor body accumulates, and the heat dissipation effect is affected by the heat conduction efficiency of the heat conduction sheet.

[0023] In order to solve the above problems, please refer to Figures 1-6 , an integrated motor with forced air cooling structure is provided, which comprises a motor body 10, a heat dissipation mechanism 20 and a heat dissipation fan 25.

[0024] Specifically, the heat dissipation mechanism 20 comprises an outer heat conduction sheet 22 fixed with the motor body 10 and a connecting shell 21 fixed outside the outer heat conduction sheet 22, the heat dissipation fan 25 is arranged at the middle position of the connecting shell 21, the inner part of the connecting shell 21 is provided with a flow guiding mechanism for guiding the airflow blown out by the heat dissipation fan 25, the outer surface of the outer heat conduction sheet 22 is provided with a plurality of air holes 222, the air holes 222 penetrate through the outer heat conduction sheet 22 and are in communication with the air outlet of the flow guiding mechanism.

[0025] As shown in Figure 2 , the airflow is inhaled from one side of the connecting shell 21 and exhaled from one side of the outer heat conduction sheet 22, and the driving shaft 11 of the motor body 10 is directed to the end away from the connecting shell 21.

[0026] The heat of the motor body 10 is conducted out through the outer heat-conducting sheet 22, and the air flow blown by the heat-dissipating fan 25 is divided into two groups along the flow guide mechanism, one group is blown to the outer heat-conducting sheet 22, and the other group is blown to the tail of the motor body 10, so that two groups of heat-dissipating air flow are formed. The air flow blown to the outer heat-conducting sheet 22 enters the inside of the outer heat-conducting sheet 22 through the flow guide mechanism, and takes away the heat from the inside, so that the heat-dissipating efficiency is higher. The air flow is sprayed from the inside of the outer heat-conducting sheet 22, so that the hot air flow is far away from the vicinity of the heat-dissipating fan 25, and will not be circulated into the inside of the connecting shell 21 by the heat-dissipating fan 25, so as to ensure the stability of the temperature of the heat-dissipating air flow, and avoid the influence of the temperature of the heat-dissipating air flow on the heat-dissipating efficiency. The heat-dissipating efficiency of the outer heat-conducting sheet 22 is reduced from the side. The air flow blown to the tail of the motor body 10 will directly take away the heat on the shell of the motor body 10, and flow out from the gap between the outer heat-conducting sheets 22.

[0027] In one embodiment, please refer to Figure 5 The inner wall of the connecting shell 21 is provided with a plurality of annularly distributed inner heat-conducting sheets 212, the upper surface and the lower surface of the outer heat-conducting sheet 22 are provided with connecting rings 24, the cross section of the connecting ring 24 is L-shaped, the upper connecting ring 24 is detachably fixed with the connecting shell 21, the lower connecting ring 24 is detachably fixed with the motor body 10, and the inner heat-conducting sheet 212 is tightly attached to the inner wall of the connecting ring 24.

[0028] The position of the outer heat-conducting sheet 22 is limited through the connecting ring 24, that is, the outer heat-conducting sheet 22 is in a fixed state between the two connecting rings 24. The welding method is generally used for fixation, and the connecting ring 24 is used as a connecting piece to connect the connecting shell 21 and the motor body 10, so that the later disassembly is facilitated.

[0029] In the above technical solution, the airflow blown into the interior by the heat dissipation fan 25 does not completely enter the flow guide mechanism, and part of the airflow hits the connecting shell 21 or the motor body 10, forming backflow. This part of the airflow may be in contact with the motor body 10, so it will absorb part of the heat. The temperature of the backflow is slightly higher than the initial entering airflow temperature, and repeated backflow may cause the internal gas temperature to rise, that is, the temperature of the airflow blown into the flow guide mechanism by the heat dissipation fan 25 may be higher than the initial airflow, thereby affecting the heat dissipation efficiency. Therefore, the inner heat conduction sheet 212 arranged inside the connecting shell 21 is used to form internal airflow guidance, that is, the inner heat conduction sheet 212 is in contact with the backflowing gas for backflow heat dissipation. The inner heat conduction sheet 212 itself does not absorb the heat of the motor body 10, but is in contact with the backflowing gas, and the heat is transferred to the inner heat conduction sheet 212. The heat transferred by the subsequent backflowing airflow is taken away, so that the heat generated by backflow is always absorbed by the inner heat conduction sheet 212, thereby avoiding the transfer of heat from the connecting shell 21, the connecting ring 24 and the like to the outer heat conduction sheet 22, reducing the heat that needs to be transferred by the outer heat conduction sheet 22, and achieving the effect of auxiliary heat dissipation.

[0030] In one embodiment, please refer to Figure 5 The inner wall of the inner heat conduction sheet 212 is fixed with a second filter screen 234 in the form of a ring, the inner ring of the second filter screen 234 is fixed with a first filter screen 233 in the form of a pipe, and the heat dissipation fan 25 is fixed to the inner wall of the first filter screen 233. The surface of the connecting shell 21 away from the motor body 10 is provided with an air inlet screen 211, and the heat dissipation fan 25 inhales air from the air inlet screen 211.

[0031] The second filter screen 234 and the first filter screen 233 are used to ensure ventilation and prevent sand and other impurities in the air from entering the flow guide mechanism, that is, to prevent the flow guide mechanism from being blocked or damaged. The air inlet screen 211 blocks larger particles to prevent the fan blades of the heat dissipation fan 25 from being damaged.

[0032] In one embodiment, please refer to 5, the flow guide mechanism includes a sealing plate 23 fixed below the first filter screen 233. The outer side of the sealing plate 23 is provided with a flow guide part 231, which is a ring structure with a U-shaped cross section. The flow guide part 231 is separated from the outer heat conduction sheet 22 to form a U-shaped flow channel 232. One end of the U-shaped flow channel 232 communicates with the heat dissipation fan 25, and the other end of the U-shaped flow channel 232 communicates with the air hole 222.

[0033] The flow guide mechanism is a U-shaped flow channel 232 arranged inside the outer heat-conducting sheet 22 to circulate the gas flow, thereby limiting the flow direction of the gas flow, and because of its annular structure, part of the gas flow will flow out from the space between the outer heat-conducting sheets 22, and the gas flow flowing out from the space will carry the heat generated by impacting the surface of the motor body 10, and this part of the heat will directly escape from the side surface, without affecting the air inlet temperature of the cooling fan 25.

[0034] For the structure of the outer heat-conducting sheet 22, the application provides two modes:

[0035] The inner cavity 221 is arranged inside the outer heat-conducting sheet 22, and the two sides of the inner cavity 221 are respectively connected to a plurality of air holes 222 and one end of the U-shaped flow channel 232.

[0036] That is, the first mode is to connect the inner cavity 221 to the air holes 222 and the U-shaped flow channel 232, and because the area of the inner cavity 221 is large, in this case, the heat-conducting area is increased, and the heat-conducting speed is faster, so that the heat dissipation speed is the fastest by adopting this structure, but because of the arrangement of the inner cavity 221, the outer heat-conducting sheet 22 may be slightly inwardly recessed, and it is generally arranged on some stable structure motor and cannot be placed on a vibrating motor for practical use.

[0037] The inner cavity 221 is arranged inside the outer heat-conducting sheet 22, and the two sides of the inner cavity 221 are respectively connected to a plurality of air holes 222 and one end of the U-shaped flow channel 232.

[0038] The second mode is to arrange a plurality of branch channels 223 inside, and the gas flow channel 224 connecting the branch channels 223 is used as the total flow channel for connection, so that the gas entering the outer heat-conducting sheet 22 will be divided into the branch channels 223 from the gas flow channel 224, and then flow to the air holes 222 from the branch channels 223 for discharge, and this mode has a stable structure, but the processing cost is higher, so it is necessary to select according to the demand.

[0039] The above only describes the preferred embodiments of the application and is not intended to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An integrated motor of forced air cooling structure, characterized by, The utility model relates to a motor cooling device, including: Motor body (10); Heat dissipation mechanism (20), the heat dissipation mechanism (20) including with the outer heat conduction sheet (22) of motor body (10) fixed and the connecting shell (21) fixed to the outside of outer heat conduction sheet (22); Heat dissipation fan (25), heat dissipation fan (25) set up in the middle position of connecting shell (21); The inside of connecting shell (21) is provided with the guide mechanism of the air current of heat dissipation fan (25) blows out and guides, the outer surface of outer heat conduction sheet (22) is provided with a plurality of air holes (222), the air hole (222) penetrates outer heat conduction sheet (22) and is communicated with the air outlet of guide mechanism; The inside of connecting shell (21) is provided with a plurality of annularly distributed inner heat conduction sheets (212), the upper surface and the lower surface of outer heat conduction sheet (22) are provided with connecting ring (24), the section of connecting ring (24) is L type, the upper connecting ring (24) is detachably fixed with connecting shell (21), the lower connecting ring (24) is detachably fixed with motor body (10), and the inner wall of inner heat conduction sheet (212) is tightly attached to connecting ring (24).

2. The integrated motor of forced air cooling structure according to claim 1, characterized in that: The inner wall of inner heat conduction sheet (212) is fixed with annular second filter screen (234), the inner ring of second filter screen (234) is fixed with tubular first filter screen (233), heat dissipation fan (25) is fixed to the inner wall of first filter screen (233), and the side surface of connecting shell (21) away from motor body (10) is provided with air inlet net (211), and heat dissipation fan (25) inhales air from air inlet net (211).

3. The integrated motor of forced air cooling structure according to claim 2, characterized in that: The guide mechanism includes the sealing plate (23) fixed below first filter screen (233), the outer side of sealing plate (23) is provided with guide part (231), the guide part (231) is annular structure with the section of U type, the guide part (231) is separated from outer heat conduction sheet (22) and forms U type flow channel (232), one end of U type flow channel (232) is communicated with heat dissipation fan (25), and the other end of U type flow channel (232) is communicated with air hole (222).

4. The integrated motor of forced air cooling structure according to claim 3, characterized in that: The inside of outer heat conduction sheet (22) is provided with inner cavity (221), and the two sides of inner cavity (221) are communicated with a plurality of air holes (222) and one end of U type flow channel (232) respectively.

5. A one-piece motor of the forced air cooling structure according to claim 3, characterized in that: The inside of outer heat conduction sheet (22) is provided with a plurality of branch channels (223) and gas flow channel (224), the branch channel (223) is one-to-one corresponding with air hole (222), one end of air hole (222) and branch channel (223) is communicated, the other end of branch channel (223) is communicated with gas flow channel (224), and the other end of gas flow channel (224) is communicated with one end of U type flow channel (232).

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