CN214014015U

CN214014015U - Motor convenient to heat dissipation

Info

Publication number: CN214014015U
Application number: CN202120053818.5U
Authority: CN
Inventors: 吴科能
Original assignee: Zhejiang Qizhi Electric Co ltd
Current assignee: Zhejiang Qizhi Electric Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-08-20
Anticipated expiration: 2031-01-07

Abstract

The utility model relates to a motor convenient to heat dissipation, which comprises an outer shell, the apparatus further comprises a rotating shaft, rotor and stator, first end cover and second end cover are installed respectively to the both ends of shell, the both ends of pivot are rotated respectively and are connected on first end cover and second end cover, the rotor is fixed in the pivot, the stator encircles the rotor and fixes on the inner wall of shell, first end cover and second end cover are worn out respectively to the both ends of pivot, and seted up the ventilation passageway in the pivot, the pivot is in and installs the flabellum on the tip outside the first end cover, the flabellum is used for making the circulation of air in the ventilation passageway. The rotation of flabellum makes the air in the ventilation passageway begin to circulate, compares in the shell, and the heat that the rotor produced transmits the pivot more easily, and along with the circulation of air in the ventilation passageway, the epaxial heat of commentaries on classics is constantly taken over for the temperature of pivot is less than the temperature of rotor, makes the rotor constantly to pivot transmission heat, thereby plays the cooling to the rotor, and the radiating effect of whole motor is better.

Description

Motor convenient to heat dissipation

Technical Field

The present application relates to the field of motors, and more particularly, to a motor with heat dissipation convenience.

Background

When the motor runs, the stator and the rotor generate heat, the stator and the rotor are easy to damage when working in a high-temperature environment, and particularly for a permanent magnet motor, the magnet in the rotor can be demagnetized when being subjected to an overhigh temperature, so that the motor is damaged. Heat dissipation of the rotor and stator is required.

Since the stator is directly mounted to the motor housing, heat generated in the stator can be dissipated to the ambient environment through the motor housing, while heat generated in the rotor needs to travel a longer path to be transferred to the ambient environment, which makes cooling the rotor more challenging than cooling the stator.

To improve cooling of the motor rotor, some motors employ end caps with openings so that the internal components of the motor, including the rotor, can be exposed to the ambient environment through the openings. However, this cooling method easily causes foreign substances such as moisture or dust to enter the motor, and still causes damage to the internal components of the motor. There is therefore a need for an improved cooling of existing motors.

SUMMERY OF THE UTILITY MODEL

In order to improve the heat dissipation effect of motor, this application provides a motor convenient to heat dissipation.

The application provides a motor convenient to heat dissipation adopts following technical scheme:

the utility model provides a motor convenient to heat dissipation, includes shell, pivot, rotor and stator, first end cover and second end cover are installed respectively to the both ends of shell, the both ends of pivot are rotated respectively and are connected on first end cover and second end cover, the rotor is fixed in the pivot, the stator encircles the rotor and fixes on the inner wall of shell, first end cover, second end cover and shell form sealed cavity jointly, first end cover and second end cover are worn out respectively to the both ends of pivot, and have seted up the ventilation passageway in the pivot, the pivot department all sets up the vent that communicates with the ventilation passageway on the tip outside sealed cavity, the pivot is in and installs the flabellum on the tip outside the first end cover, the flabellum is used for making the circulation of air in the ventilation passageway.

Through adopting above-mentioned technical scheme, when the pivot drove the rotor and rotates, the pivot drove the flabellum simultaneously and rotates, the rotation of flabellum makes the air in the ventilation passageway begin to circulate, compare in the shell, the heat that the rotor produced transmits in the pivot more easily, along with the circulation of air in the ventilation passageway, the epaxial heat of commentaries on classics is constantly taken away, make the temperature of pivot be less than the temperature of rotor, make the rotor constantly to the pivot transmission heat, thereby play the cooling to the rotor, the radiating effect of whole motor is better.

Optionally, a fan cover is installed on the end portion of the outer shell where the first end cover is located, the fan cover covers the fan blades, and a ventilation path communicated with the outside is formed in the fan cover.

By adopting the technical scheme, the fan cover plays a role in protecting the fan blades, the possibility that the fan blades are damaged due to external collision is reduced, and the ventilation path on the fan cover can standardize the air flow path caused by fan blade flaring and is matched with the ventilation channel, so that the air flow stability of the ventilation channel is improved.

Optionally, the fan housing is covered on the end portion of the housing, a gap exists between the inner side wall of the fan housing and the outer side wall of the housing, the gap is a ventilation path, an air guide surface is arranged between the inner side wall of the fan housing and the inner bottom surface of the fan housing, and the blowing direction of the fan blades is from one side of the ventilation channel to one side of the inner bottom surface of the fan housing.

Through adopting above-mentioned technical scheme, compare the opening of fan housing, ventilation channel's vent is littleer, and it is easier that the air gets into the fan housing than getting into the vent from the fan housing from the vent, therefore the flabellum draws the air in from ventilation channel, and the circulation of air speed in the ventilation channel is faster, further improves the radiating effect to the wind of wearing out from ventilation route can also dispel the heat to the lateral wall of shell, improves the radiating effect of whole motor.

Optionally, a plurality of air supply channels are formed in the housing, two ends of each air supply channel penetrate through the first end cover and the second end cover along the axial direction of the rotating shaft, and an opening formed in the first end cover of each air supply channel is located in the fan cover.

By adopting the technical scheme, the air supplementing channel and the ventilation channel supplement air into the fan cover together, the air flowing speed in the ventilation channel is reduced, the possibility of generating whistle caused by rapid air flowing in the ventilation channel is reduced, and the noise of the motor during working is reduced.

Optionally, a plurality of cooling fins are installed on the circumferential outer side wall of the shell, the cooling fins are all arranged along the axial direction of the rotating shaft, a cooling channel is formed between every two adjacent cooling fins, and one end of the cooling channel is communicated with the ventilation path.

Through adopting above-mentioned technical scheme, the fin increases the area of contact with the air on the one hand, can be faster with heat transfer to the outside air on the shell in, on the other hand is through constituting heat dissipation channel for the wind that delivers from ventilation path can remove along heat dissipation channel, improves the contact time of wind and shell, further improves the radiating effect.

Optionally, one end of the housing, which is far away from the fan blades, is movably connected with a cover plate, and the cover plate covers an opening of the air supply channel.

By adopting the technical scheme, the cover plate can be selectively covered on the air supplementing channel or not covered on the air supplementing channel according to actual needs, and the air supplementing channel is appropriately blocked to enhance the air flow rate in the ventilation channel when the heat dissipation of the rotor is required to be enhanced; if the noise needs to be reduced, the air supply channel is opened more.

Optionally, a plurality of mounting grooves corresponding to the air supplementing channels one to one are formed in the end face, far away from the fan blades, of the shell, the mounting grooves are communicated with the corresponding air supplementing channels, one end of the cover plate is hinged in the mounting grooves, the mounting grooves are fixedly provided with positioning columns, the cover plate is provided with positioning grooves matched with the positioning columns, and the hinging positions of the positioning columns and the cover plate are located on two sides of an opening of each air supplementing channel respectively.

Through adopting above-mentioned technical scheme, like ventilation channel, the air in the benefit wind passageway also removes from second end cover side to first end cover one side, and when the apron passed through reference column and positioning groove's simple location shutoff benefit wind passageway, the one end that the benefit wind passageway is close to first end cover is in the negative pressure state for the outside air presses the apron on the opening of benefit wind passageway, and the apron is difficult to follow and mends aside from the opening of benefit wind passageway.

Optionally, a base is fixed on the outer side wall of the housing, and when the housing is supported on the ground by the base, the fan housing is arranged higher than the ground.

By adopting the technical scheme, the whole motor is fixedly installed through the base, the fan cover is prevented from directly contacting the ground or an installation surface, the possibility of deformation of the fan cover due to compression is reduced, and the smoothness of a ventilation path is guaranteed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the ventilation channel is arranged, so that the heat of the rotor is more easily transferred to the outside, and the cooling effect on the rotor is improved;

2. the ventilation path is arranged, so that the wind fanned out by the fan blades can be used for radiating the shell, and the radiating capacity of the whole motor is further improved;

3. the air flow rate in the ventilation channel can be adjusted by arranging the air supplementing channel which can be selectively switched on and off, and the noise is reduced and the heat dissipation capability is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a cross-sectional view of an embodiment of the present application.

Fig. 3 is an enlarged view at a in fig. 1.

Description of reference numerals: 1. a housing; 11. a base; 12. a heat sink; 13. a heat dissipation channel; 14. a wind supplementing channel; 15. mounting grooves; 16. a cover plate; 17. a positioning column; 18. a positioning groove; 2. a rotating shaft; 21. a ventilation channel; 22. a vent; 3. a rotor; 4. a stator; 5. a first end cap; 6. a second end cap; 7. a fan blade; 8. a fan housing; 81. a ventilation path.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a motor convenient to heat dissipation. Referring to fig. 1 and 2, the motor facilitating heat dissipation includes a housing 1, a rotating shaft 2, a rotor 3, a stator 4, fan blades 7 and a fan housing 8, wherein a first end cap 5 and a second end cap 6 are respectively installed at two ends of the housing 1. The both ends of pivot 2 are rotated respectively with the help of the bearing and are connected on first end cover 5 and second end cover 6, and the both ends of pivot 2 wear out respectively on first end cover 5 and the second end cover 6. The first end cover 5, the second end cover 6 and the shell 1 jointly form a sealed cavity, the rotor 3 and the stator 4 are both located in the sealed cavity, the rotor 3 is fixed on the rotating shaft 2, and the stator 4 is arranged around the rotor 3 and fixed on the inner wall of the shell 1. The wind shield 8 covers the end of the housing 1 where the first end cover 5 is located, and the wind shield 8 is fixed to the circumferential outer side wall of the housing 1 by bolts. The fan blades 7 are positioned in the fan cover 8, and the fan blades 7 and the end part of the rotating shaft 2, which is positioned outside the first end cover 5, are coaxially fixed together.

Referring to fig. 1, the cross section of the casing 1 is circular, the outer side wall of the casing 1 is fixed with a heat sink 12 and a base 11, the base 11 is used for supporting the whole motor on the ground, and when the base 11 supports the casing 1 on the ground, the wind shield 8 is arranged above the ground. The number of the radiating fins 12 is multiple, the radiating fins 12 are uniformly distributed on the shell 1 around the rotating shaft 2, the radiating fins 12 are all arranged along the axial direction of the rotating shaft 2, and a radiating channel 13 is formed between the adjacent radiating fins 12.

When the fan blades 7 rotate along with the rotating shaft 2, the fan blades 7 drive air to circulate to form wind, and then an air inlet channel for supplementing air and an air outlet channel for discharging the wind need to be arranged on the motor.

Referring to fig. 2, the air supply passage includes a ventilation passage 21 and an air supplement passage 14. The ventilation channel 21 is arranged in the rotating shaft 2, the ventilation channel 21 is arranged along the axial direction of the rotating shaft 2, one end of the ventilation channel 21 penetrates through the end face, located outside the first end cover 5, of the rotating shaft 2, and the other end of the ventilation channel 21 is close to the end, located outside the second end cover 6, of the rotating shaft 2. The circumferential outer side walls at the two ends of the rotating shaft 2 are provided with ventilation openings 22 communicated with the ventilation channel 21, wherein the ventilation openings 22 at the end part of the rotating shaft 2 outside the first end cover 5 are positioned at one side of the fan blade 7 close to the rotor 3.

The air supply channel 14 is provided with a plurality of air supply channels 14, and the plurality of air supply channels 14 are uniformly distributed in the shell 1 around the rotating shaft 2. Air supplement channel 14 runs through the both ends of shell 1 along the axial direction of pivot 2, in addition, has all seted up the air vent on first end cap 5 and the second end cap 6, and the air vent on first end cap 5 and the second end cap 6 all belongs to the partly of air supplement channel 14, and the air vent on first end cap 5 still communicates with the inner chamber of fan housing 8.

Referring to fig. 3, a plurality of mounting grooves 15 are formed in the end surface of the second end cap 6 facing away from the rotor 3, the plurality of mounting grooves 15 correspond to the vent holes in the second end cap 6 one by one, and the vent holes in the second end cap 6 are formed in the bottoms of the corresponding mounting grooves 15. A cover plate 16 is hinged in the mounting groove 15, and the hinged position of the cover plate 16 and the mounting groove 15 is positioned on one side of the corresponding vent hole close to the base 11. A positioning column 17 is further fixed on the bottom of the mounting groove 15, and the positioning column 17 is located on the side of the corresponding vent opening away from the hinge position of the cover plate 16. A positioning groove 18 is formed in the side wall of the cover plate 16 facing the air vent, and the positioning groove 18 is matched with the positioning column 17.

Referring to fig. 2, the air outlet passage includes a ventilation path 81 and a heat dissipation passage 13. A gap exists between the inner side wall of the hood 8 and the outer side wall of the housing 1, and the gap is the ventilation path 81. And each heat dissipation channel 13 communicates with the ventilation path 81. An arc-shaped air guide surface is arranged between the inner side wall of the fan cover 8 and the inner bottom surface of the fan cover 8, when the fan blades 7 blow wind to the inner bottom surface of the fan cover 8, the wind collides with the side wall of the wind direction fan cover 8 on the inner bottom surface of the fan cover 8 and diffuses, the wind is reversed through the air guide surface, and then enters the heat dissipation channel 13 through the ventilation path 81.

The implementation principle of the motor convenient for heat dissipation in the embodiment of the application is as follows: when the motor operates, the rotating shaft 2 drives the fan blades 7 to rotate, the fan blades 7 push the air in the fan housing 8 to the inner bottom surface of the fan housing 8, so that negative pressure occurs to the air near the first end cover 5, and the air in the air supplementing channel 14 and the ventilation channel 21 is pressed into the fan housing 8, so that the air flow is formed by the air supplementing channel 14 and the ventilation channel 21. And the air moving toward the inner bottom surface of the hood 8 is reversed by the guide surface and enters the heat dissipation channel 13 through the ventilation path 81. Thereby enhancing heat dissipation to the rotor 3, the stator 4, and the housing 1. And during the operation of the motor, the cover plate 16 can be rotated to close or open the air supplement channel 14 to influence the air flow rate in the ventilation channel 21, so as to enhance the heat dissipation of the rotor 3 or reduce the noise generation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a motor convenient to heat dissipation, includes shell (1), pivot (2), rotor (3) and stator (4), first end cover (5) and second end cover (6) are installed respectively to the both ends of shell (1), the both ends of pivot (2) are rotated respectively and are connected on first end cover (5) and second end cover (6), rotor (3) are fixed on pivot (2), stator (4) encircle rotor (3) and fix on the inner wall of shell (1), its characterized in that: first end cover (5), second end cover (6) and shell (1) form sealed cavity jointly, first end cover (5) and second end cover (6) are worn out respectively at the both ends of pivot (2), and have seted up ventilation passageway (21) on pivot (2), pivot (2) are located all to set up on the tip outside sealed cavity vent (22) with ventilation passageway (21) intercommunication, pivot (2) are in and install flabellum (7) on the tip outside first end cover (5), flabellum (7) are used for making the circulation of air in ventilation passageway (21).

2. A heat-dissipating electric motor as claimed in claim 1, wherein: install fan housing (8) on shell (1) tip at first end cover (5) place, fan housing (8) cover flabellum (7) and establish, set up ventilation route (81) with external intercommunication on fan housing (8).

3. A heat-dissipating electric motor as set forth in claim 2, wherein: the fan housing (8) is covered on the end part of the shell (1), a gap exists between the inner side wall of the fan housing (8) and the outer side wall of the shell (1), the gap is a ventilation path (81), an air guide surface is arranged between the inner side wall of the fan housing (8) and the inner bottom surface of the fan housing (8), and the blowing direction of the fan blades (7) is from one side of the ventilation channel (21) to one side of the inner bottom surface of the fan housing (8).

4. A heat-dissipating electric motor as claimed in claim 3, wherein: a plurality of air supplementing channels (14) are formed in the shell (1), two ends of each air supplementing channel (14) penetrate through the first end cover (5) and the second end cover (6) along the axial direction of the rotating shaft (2), and the air supplementing channels (14) are formed in the fan cover (8) at the opening of the first end cover (5).

5. A heat-dissipating electric motor as claimed in claim 3, wherein: install a plurality of fin (12) on the circumference lateral wall of shell (1), fin (12) all set up along the axial direction of pivot (2), form heat dissipation channel (13) between adjacent fin (12), the one end and the ventilation route (81) intercommunication of heat dissipation channel (13).

6. An electric motor for facilitating heat dissipation as set forth in claim 4, wherein: the second end cover (6) is movably connected with a cover plate (16), and the cover plate (16) covers the opening of the air supplementing channel (14).

7. An electric motor for facilitating heat dissipation as set forth in claim 6, wherein: the utility model discloses a wind compensation device, including second end cover (6), second end cover (6) are last to have seted up a plurality ofly and to mend wind passageway (14) one-to-one mounting groove (15), mounting groove (15) and corresponding wind compensation passageway (14) intercommunication, the one end of apron (16) articulates in mounting groove (15), be fixed with reference column (17) on mounting groove (15), be equipped with on apron (16) with reference column (17) complex positioning groove (18), the articulated position of reference column (17) and apron (16) is in the opening both sides of wind compensation passageway (14) respectively.

8. A heat-dissipating electric motor as set forth in claim 2, wherein: the outer side wall of the shell (1) is fixedly provided with a base (11), and when the base (11) supports the shell (1) on the ground, the fan cover (8) is arranged higher than the ground.