Motor end shield, industrial motor

Abstract

The application provides a motor end cover and an industrial motor. The motor end cover comprises an end cover body and a fan cover shell. The end cover body has an inner side surface for assembling with a non-driving end of a motor and an outer side surface on the outer side of the inner side surface. The outer side surface comprises a fan blade assembly surface in a central area of the outer side surface and a guide air ring surface arranged around the fan blade assembly surface in an edge area of the outer side surface. The fan cover shell is arranged radially outward of the end cover body. An air outlet channel of centrifugal fan blades is formed between the fan cover shell and the guide air ring surface. A plurality of partition plates are arranged between the fan cover shell and the guide air ring surface. The partition plates separate the air outlet channel into a plurality of cooling channels. Each cooling channel extends along an axial direction of the end cover body. The application can guide the air flow of the centrifugal fan blades before entering a heat dissipation flow channel between heat dissipation fins of a subsequent motor shell, effectively increases an initial wind speed value of the cooling air flow entering the heat dissipation flow channel of the motor shell, and enhances the heat dissipation effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of motor design, and particularly relates to a motor end cover and an industrial motor. BACKGROUND

[0002] Industrial motors generally adopt a self-fan cooling mode for heat dissipation of the motor, that is, a fan blade is assembled at a non-driving end of the motor, and a wind shield part is fixed on the end cover. When the rotor rotates, the fan blade is driven to rotate, and air flows through the wind shield to the surface of the motor housing for heat dissipation. There is a large loss when the fan blade air flow flows out of the wind shield passage into the motor housing fins, resulting in a decrease in the initial wind speed. This leads to a significant increase in the temperature rise of the winding far from the fan blade end of the motor compared with the non-driving end winding, and the overall heat dissipation effect of the motor is greatly reduced. SUMMARY

[0003] Therefore, the present application provides a motor end cover and an industrial motor, which can solve the technical problem that the fan blade air flow from the wind shield passage into the motor housing fins has a large loss in the self-fan cooling heat dissipation mode of the motor in the prior art, resulting in a decrease in the initial wind speed, and further leading to a significant increase in the temperature rise of the winding far from the fan blade end of the motor compared with the non-driving end winding, and the overall heat dissipation effect of the motor is poor.

[0004] To solve the above problems, the present application provides a motor end cover, which comprises an end cover body and a wind shield shell. The end cover body has an inner side surface for assembly with a non-driving end of a motor and an outer side surface on the outer side of the inner side surface. The outer side surface comprises a fan blade assembly surface in a central region of the outer side surface and a wind guide ring surface arranged around the fan blade assembly surface in an edge region of the outer side surface. The wind shield shell is arranged radially outward of the end cover body. An air outlet passage for centrifugal fan blades is formed between the wind shield shell and the wind guide ring surface. A plurality of partition plates are arranged between the wind shield shell and the wind guide ring surface. The partition plates divide the air outlet passage into a plurality of cooling channels. Each cooling channel extends in the axial direction of the end cover body.

[0005] In some embodiments, the end cover body, the wind shield shell and each partition plate are integrally formed. The fan blade assembly surface and the wind guide ring surface are connected by a wind guide arc surface in a smooth transition, and the wind guide ring surface is on the side of the fan blade assembly surface close to the non-driving end of the motor.

[0006] In some embodiments, the axial extension length of each partition plate is equal to the axial extension length of the wind guide ring surface, and the outer end of the partition plate is connected to the axial inner end of the wind guide arc surface.

[0007] In some embodiments, the end cover body has a plurality of assembly through holes for assembly with the motor. Each assembly through hole is on the fan blade assembly surface. The central region of the inner side surface is configured with a bearing chamber.

[0008] In some embodiments, a sealing rubber strip is arranged on the side end face of the non-driving end of the motor, and the sealing rubber strip is arranged around the circumference of the fan cover shell; and / or, a grating air inlet plate is detachably assembled on the air inlet of the fan cover shell.

[0009] The application also provides an industrial motor, comprising a motor shell and a rear end cover assembled on the non-driving end of the motor shell, wherein the rear end cover is the motor end cover described above.

[0010] In some embodiments, a plurality of heat dissipation fins are arranged on the outer circumferential wall of the motor shell, and each heat dissipation fin is arranged in one-to-one correspondence with each partition plate and is formed in one-to-one correspondence in the axial direction of the motor.

[0011] In some embodiments, the radial height of each heat dissipation fin increases along the direction from the non-driving end to the driving end of the motor.

[0012] In some embodiments, the industrial motor is a horizontal motor, the bottom side area of the motor shell is a plane parallel to the mounting plane of the motor, and each heat dissipation fin is located on the plane.

[0013] In some embodiments, an end cover connecting lug seat is arranged on the inner wall of the motor shell, and each assembly through hole of the motor end cover is arranged in one-to-one correspondence with each end cover connecting lug seat.

[0014] The motor end cover and the industrial motor provided by the application have the following beneficial effects:

[0015] A plurality of partition plates are arranged in the annular air outlet channel between the air guide ring surface and the fan cover shell, so as to divide the air outlet channel into a plurality of cooling channels extending along the axial direction of the end cover body and penetrating through both ends, so that the air flow of the centrifugal fan blade can be guided (from the tangential direction of the centrifugal fan blade to axial flow) before entering the heat dissipation flow channel between the heat dissipation fins of the subsequent motor shell, so as to effectively increase the initial wind speed value of the cooling air flow entering the heat dissipation flow channel of the motor shell and strengthen the heat dissipation effect.

[0016] The axial outer end of each partition plate does not protrude above the air guide arc surface, so that the outflow air flow of the centrifugal fan blade can smoothly enter each cooling channel to form an axial flow speed guide, and the resistance loss of the air flow caused by each partition plate can be further reduced.

[0017] The radial inner side of the sealing strip is clamped between the radial outer wall of the fan cover shell and the end of the heat dissipation fin close to the motor shell, so that the connection position of the fan cover shell and the heat dissipation fin can be effectively sealed, so as to ensure that the cooling air flow can enter the heat dissipation flow channel between the heat dissipation fins, and prevent the leakage of the cooling air flow. More importantly, the clamping of the sealing strip between the fan cover shell and the end part of the heat dissipation fin can realize the flexible contact between the two, thereby reducing the noise and even structural damage caused by the rigid contact between the two during the operation of the motor.

[0018] Each of the heat dissipation fins and each of the partition plates are arranged one by one and correspondingly formed in the axial direction of the motor, that is, each cooling channel formed between the partition plates and each heat dissipation flow channel formed between the heat dissipation fins are in one-to-one correspondence in the axial direction, so as to further reduce the wind resistance loss caused by the misalignment of the heat dissipation fins and the partition plates in the length direction, further ensure the flow and flow rate of the cooling air flow in the heat dissipation flow channel, and ensure the cooling effect.

[0019] The fin radial height of each heat dissipation fin increases along the direction from the non-driving end to the driving end of the motor, which can increase the heat dissipation area of the motor shell on the driving end side, ensure the heat dissipation effect of the driving end position of the motor, and ensure the temperature rise balance of the motor shell in the axial direction, that is, reduce the temperature rise difference between the two ends of the motor shell, and improve the reliability of the motor. On the other hand, in view of the exponential decrease of air flow rate along the axial direction, the use of heat dissipation fins with increasing height can ensure that the wind speed entering the heat dissipation flow channel remains large, and the overall heat dissipation effect is improved obviously.

[0020] The bottom area of the motor shell is improved from a cylindrical shape in the prior art to a planar structure, which can increase the space between the bottom area of the motor shell and the mounting plane, and further increase the radial height of the heat dissipation fins in this area, increase the area of the heat dissipation fins, and further effectively improve the heat dissipation effect of the motor.

[0021] The end cover connecting ear seat is not in the flow path of the cooling air flow, thereby effectively avoiding the generation of the blind area of the cooling air flow in the prior art, and further improving the heat dissipation effect of the motor shell. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. The drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0023] Figure 1 is a perspective view of the motor end cover of the embodiment of the present application;

[0024] Figure 2 is a sectional view of the motor end cover of another embodiment of the present application;

[0025] Figure 3 is a perspective view (appearance) of the industrial motor of the embodiment of the present application;

[0026] Figure 4 is a front view of the industrial motor in Figure 3

[0027] Figure 5 is a right view of the industrial motor in Figure 4

[0028] Figure 6 is a left view of the industrial motor in Figure 4

[0029] Figure 7 is a sectional view of the industrial motor in Figure 3

[0030] Figure 8 is a perspective view of the motor housing in Figure 3

[0031] Figure 9 is a front view of Figure 8

[0032] Figure 10 is a left view of Figure 9

[0033] Figure 11 is a schematic view of the mounting ear of the motor end cover of the industrial motor in the prior art;

[0034] Figure 12 is a schematic view of the internal structure of the industrial motor in the prior art, in which it can be seen that there is no corresponding flow guide structure in the flow gap of the cooling air flow formed between the motor rear end cover and the fan cover shell.

[0035] The reference signs are:

[0036] 1, end cover body; 11, assembly through hole; 12, bearing chamber; 13, inner side surface; 14, outer side surface; 2, fan cover shell; 21, sealing rubber strip; 3, partition plate; 31, cooling channel; 4, grating air inlet plate; 5, air inlet plate mounting column; 51, connecting threaded part; 100, centrifugal fan blade; 200, motor housing; 201, heat dissipation fin; 202, end cover mounting ear; 203, supporting leg; 300, rear end cover; 401, front end cover; 402, stator assembly; 403, rotor assembly.​​​​​​​ DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and not intended to be limiting on the present application and its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0038] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0039] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned 90° or in other orientations in other different ways, and the spatial relative description used herein is interpreted accordingly.

[0040] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0041] Reference is made to Figure 1 and Figure 12As shown, according to the embodiment of the present application, a motor end cover is provided, which comprises an end cover body 1 and a shroud shell 2, the outer peripheral wall contour shape of the shroud shell 2 can be circular, square, etc., and the specific shape can be reasonably selected according to actual requirements, the end cover body 1 has an inner side surface 13 for assembling with the non-driving end of the motor and an outer side surface 14 outside the inner side surface 13 (the positions of the inner side surface 13 and the outer side surface 14 are taken as the reference in the state after they are assembled on the motor), the outer side surface 14 comprises a fan blade assembly surface (not marked in the figure, that is, the region corresponding to the position of the centrifugal fan blade 100) at the central region of the outer side surface 14 and a guide ring surface (not marked in the figure) provided around the fan blade assembly surface at the edge region of the outer side surface 14, the shroud shell 2 is provided radially outside the end cover body 1, so that an air outlet channel (not marked in the figure) of the centrifugal fan blade 100 is formed between the shroud shell 2 and the guide ring surface, a plurality of partition plates 3 are provided between the shroud shell 2 and the guide ring surface, that is, the radially outer end of each partition plate 3 is in sealing contact with the inner wall of the shroud shell 2, and the radially inner end of each partition plate 3 is in sealing contact with the guide ring surface, the partition plates 3 divide the air outlet channel into a plurality of cooling channels 31, each cooling channel 31 extends along the axial direction of the end cover body 1, it should be noted that the extension along the axial direction here specifically means that the extension direction of the cooling channel 31 is substantially parallel to the central axis of the end cover body 1, and a small range of angular inclination can be allowed, for example, the inclination angle of the two is within 2°, and it is not limited to that the two are completely parallel.

[0042] In the technical solution, a plurality of partition plates 3 are provided in the annular air outlet channel between the guide ring surface and the shroud shell 2, so that the air outlet channel is divided into a plurality of cooling channels 31 extending along the axial direction of the end cover body 1 and penetrating through both ends, so that the air flow of the centrifugal fan blade 100 can be guided (guided from the substantially tangential direction of the centrifugal fan blade 100 to axial flow) before entering the heat dissipation flow channel between the heat dissipation fins 201 of the subsequent motor housing 200, so that the initial wind speed value of the cooling air flow entering the motor housing heat dissipation flow channel can be effectively improved, and the heat dissipation effect can be enhanced.

[0043] In some embodiments, the spacing of each partition plate 3 in different side regions of the guide ring surface is as uniform as possible.

[0044] In a preferred embodiment, the end cover body 1, the shroud shell 2 and each partition plate 3 are integrally formed, for example, the motor end cover of the present application is made by integrally injection molding, so that the number of assembled parts can be significantly reduced, and the assembly difficulty can be significantly reduced, especially when each partition plate 3 is in a split structure, the sealing connection between the radially outer end or radially inner end of each partition plate 3 and the matched part is difficult to achieve, and the integrally formed structure of the present application can be easily achieved.

[0045] In a preferred embodiment, the fan blade assembly surface and the air guide ring surface are connected by a smooth transition of the air guide arc surface (not shown in the figure), and the air guide ring surface is on the side of the fan blade assembly surface close to the non-driving end of the motor.

[0046] In this technical solution, the air guide arc surface is used to smoothly connect the air guide ring surface and the fan blade assembly surface, which can smoothly guide the cooling airflow sent by the centrifugal fan blade 100 and reduce wind loss, which is conducive to further improving the initial wind speed of the cooling airflow entering the subsequent heat dissipation flow channel.

[0047] In some embodiments, the axial extension length of each separation sheet 3 is equal to the axial extension length of the air guide ring surface, and the outer end of the separation sheet 3 is connected to the axial inner end of the air guide arc surface.

[0048] In this technical solution, the position of the axial outer end of each separation sheet 3 is limited, so that the axial outer end of each separation sheet 3 does not protrude above the aforementioned air guide arc surface, thereby ensuring that the outflow airflow of the centrifugal fan blade 100 can smoothly enter each cooling channel 31 to form an axial flow velocity guide, and further reducing the airflow resistance loss of each separation sheet 3.

[0049] Specifically referring to Figure 1 In some embodiments, the end cover body 1 has a plurality of assembly through holes 11 for assembling with the motor, each assembly through hole 11 is on the fan blade assembly surface, and in a specific embodiment, the aforementioned assembly through hole 11 has four, the four assembly through holes 11 are uniformly spaced along the circumference of the end cover body 1, and are connected and assembled with the rear end of the motor through bolts in each assembly through hole 11. The assembly through hole 11 is on the fan blade assembly surface, and when the centrifugal fan blade 100 is assembled, each assembly through hole 11 and the bolt therein are all behind the leeward end surface of the centrifugal fan blade 100, and do not hinder the outflow airflow of the centrifugal fan blade 100, which is conducive to further improving the initial wind speed of the cooling airflow.

[0050] A bearing chamber 12 is configured in the central region of the inner side 13, and a corresponding bearing is assembled therein for rotatably supporting one end of the rotating shaft of the rotor assembly 403 in the motor, and the shaft end extending to the outer side of the end cover body 1 is used to connect the aforementioned centrifugal fan blade 100.

[0051] In some embodiments, the fan cover shell 2 is provided with a sealing rubber strip 21 on the side end face of the non-driving end of the motor, the sealing rubber strip 21 is arranged around the circumference of the fan cover shell 2, when the motor end cover is assembled on the end face of the non-driving end of the motor, the radially inner side portion of the sealing rubber strip 21 is clamped between the radially outer wall of the fan cover shell 2 and the end of the heat dissipation fin 201 of the motor shell 200, in this way, the connection position of the fan cover shell 2 and the heat dissipation fin 201 can be effectively sealed, thereby ensuring that the cooling airflow can enter the heat dissipation flow channel between the heat dissipation fins 201, and preventing the leakage of cooling airflow, more importantly, the clamping of the sealing rubber strip 21 between the fan cover shell 2 and the end portion of the heat dissipation fin 201 can also achieve flexible contact therebetween, thereby reducing the noise and even structural damage caused by the rigid contact between the two during the operation of the motor. Specifically, the aforementioned sealing rubber strip 21 can have a U-shaped structure, which can be buckled on the axial end face of the fan cover shell 2 through the U-shaped opening.

[0052] In a specific embodiment, a grating air inlet plate 4 is detachably assembled on the air inlet of the fan cover shell 2 to form a protection. Specifically, the space formed by the outer side face of the fan cover shell 2 and the end cover body 1, i.e. the space for installing the centrifugal fan blade 100, can be assembled with the grating air inlet plate 4 after the installation of the centrifugal fan blade 100 is completed. In a specific embodiment, referring to Figure 2 , the air outlet channel between the fan cover shell 2 and the end cover body 1 is also provided with a corresponding air inlet plate mounting column 5, and the grating air inlet plate 4 is correspondingly formed with a through hole, and the threaded connection of the two can be achieved by using a connecting threaded part 51.

[0053] According to the embodiments of the present application, referring to Figures 3 to 10 , an industrial motor is also provided, which comprises a motor shell 200 and a rear end cover 300 assembled on the non-driving end of the motor shell 200, the rear end cover 300 is the motor end cover described above. It can be understood that the industrial motor also comprises a front end cover 401, a stator assembly 402 and a rotor assembly 403, the front end cover 401 and the rear end cover 300 are respectively sealed on the two ends of the motor shell 200, the stator assembly 402 is on the inner wall of the motor shell 200, and the stator assembly 402 is sleeved on the radially outer side of the rotor assembly 403 to form a stator-rotor air gap therebetween, the two ends of the rotating shaft of the rotor assembly 403 are rotatably supported by the front end cover 401 and the rear end cover 300 via bearings, and the driving end of the rotating shaft extends outwardly from the outer side of the front end cover 401.

[0054] In some embodiments, the motor housing 200 is provided with a plurality of cooling fins 201 on the outer peripheral wall thereof, for increasing the heat dissipation area of the motor housing 200 to achieve cooling of the motor housing 200. Each of the cooling fins 201 is arranged in one-to-one correspondence with each of the partition plates 3 and is formed in one-to-one correspondence in the axial direction of the motor. That is, each cooling channel 31 formed between the partition plates 3 and each cooling flow passage formed between the cooling fins 201 are in one-to-one correspondence in the axial direction. This can further reduce the wind resistance loss caused by the misalignment of the cooling fins 201 and the partition plates 3 in the length direction thereof, further ensure the flow rate and flow velocity of the cooling air flow in the cooling flow passage, and ensure the cooling effect.

[0055] Specifically referring to Figure 10 In some embodiments, the radial height of each of the cooling fins 201 gradually increases from the non-driving end to the driving end of the motor. On the one hand, this can increase the heat dissipation area of the motor housing 200 on the driving end side, ensure the heat dissipation effect of the driving end position of the motor, and ensure the temperature rise of the motor housing 200 in the axial direction, that is, reduce the temperature rise difference between the two ends of the motor housing 200, and improve the reliability of the motor. On the other hand, in view of the exponential decrease of the air flow rate in the axial direction, the use of cooling fins 201 with gradually increasing height can ensure that the wind speed entering the cooling flow passage remains at a relatively large value, and the overall heat dissipation effect is significantly improved.

[0056] Specifically referring to Figure 9 In some embodiments, the industrial motor is a horizontal motor having two legs 203 on both sides of the rotation axis of the rotating shaft, which supports the entire industrial motor on the mounting plane. The bottom side region of the motor housing 200 is a plane parallel to the mounting plane of the motor, and each of the cooling fins 201 is located on the plane. In this case, each of the cooling fins 201 in this region can adopt the structure with gradually increasing radial height as described above, and in one embodiment, the radial height can remain unchanged.

[0057] In this technical solution, the bottom region of the motor housing 200 is improved from a cylindrical structure in the prior art (as shown in Figure 11 The bottom region of the motor housing 200 is improved from a cylindrical structure in the prior art (as shown in

[0058] In some embodiments, an end cover connecting ear seat 202 is constructed on the inner wall of the motor housing 200, and the assembly through holes 11 of the motor end cover 300 are arranged in a one-to-one correspondence with the positions of the end cover connecting ear seats 202. In a specific embodiment, corresponding threaded holes are provided on the end cover connecting ear seat 202. At this time, the motor end cover can be conveniently installed by passing a bolt through the assembly through hole 11 on the outer side of the end cover body 1 and then threading it into the corresponding threaded hole.

[0059] like Figure 11 As shown, in the prior art, the ear mounts for mounting the motor end cover are mostly arranged on the outside of the motor housing 200. In this way, the cooling airflow sent by the rear end cover for the heat dissipation fins 201 will form a blind spot area on the back side of the ear mount when flowing through the ear mount. There is almost no cooling airflow in this blind spot area, so this area objectively has the problem of insufficient cooling. In this technical solution, the end cover connecting ear mount 202 is arranged on the inside of the motor housing 200, that is, the end cover connecting ear mount 202 is not in the flow path of the cooling airflow, thereby effectively avoiding the generation of the blind spot area of ​​the cooling airflow in the prior art and further improving the heat dissipation effect of the motor housing 200. It can be understood that the assembly ear mount for the front end cover 401 at the driving end position of the motor housing 200 can also be arranged on the inside of the motor housing 200.

[0060] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. An industrial electric machine comprising a machine housing (200) and a back end cover (300) assembled to a non-driving end of the machine housing (200), characterized in that, The rear end cover (300) is a motor end cover, the motor end cover comprises an end cover body (1) and a fan cover shell (2), the end cover body (1) has an inner side surface (13) for assembling with a non-driving end of a motor and an outer side surface (14) on the outer side of the inner side surface (13), the outer side surface (14) comprises a fan blade assembly surface at a central region of the outer side surface (14) and a guide air ring surface arranged at an edge region of the outer side surface (14) and surrounding the fan blade assembly surface, the fan cover shell (2) is arranged radially outward of the end cover body (1), an air outlet channel of a centrifugal fan blade (100) is formed between the fan cover shell (2) and the guide air ring surface, a plurality of partition plates (3) are arranged between the fan cover shell (2) and the guide air ring surface, the partition plates (3) divide the air outlet channel into a plurality of cooling channels (31), and each cooling channel (31) extends in the axial direction of the end cover body (1); the end cover body (1), the fan cover shell (2) and each partition plate (3) are integrally formed; the end cover body (1) is provided with a plurality of assembly through holes (11) for assembling with the motor, and each assembly through hole (11) is located on the fan blade assembly surface; a grating air inlet plate (4) is detachably assembled on the air inlet of the fan cover shell (2); a plurality of heat dissipation fins (201) are arranged on the outer peripheral wall of the motor shell (200), each heat dissipation fin (201) is arranged in one-to-one correspondence with each partition plate (3) and forms a smooth joint in the axial direction of the motor; and the fin radial height of each heat dissipation fin (201) gradually increases in the direction from the non-driving end to the driving end of the motor.

2. The industrial electric machine of claim 1, wherein, The industrial motor is a horizontal motor, the bottom side region of the motor shell (200) is a plane parallel to the mounting plane of the motor, and each heat dissipation fin (201) is located on the plane.

3. The industrial electric machine of claim 1, wherein, An end cover connecting lug seat (202) is arranged on the inner wall of the motor shell (200), and each assembly through hole (11) of the motor end cover is arranged in one-to-one correspondence with each end cover connecting lug seat (202).

4. The industrial electric machine of claim 1, wherein, The fan blade assembly surface and the guide air ring surface are connected through a guide air arc surface, and the guide air ring surface is located on the side of the fan blade assembly surface close to the non-driving end of the motor.

5. The industrial electric machine of claim 4, wherein, The axial extension length of each partition plate (3) is equal to the axial extension length of the guide air ring surface, and the outer end of the partition plate (3) is connected with the axial inner end of the guide air arc surface.

6. The industrial electric machine of claim 1, wherein, A bearing chamber (12) is arranged at the central region of the inner side surface (13).

7. The industrial electric machine of claim 1, wherein, A sealing rubber strip (21) is arranged on the side end surface of the fan cover shell (2) close to the non-driving end of the motor, and the sealing rubber strip (21) is arranged circumferentially around the fan cover shell (2).

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