CN113489220A - Internal circulation heat radiation structure and motor - Google Patents
Internal circulation heat radiation structure and motor Download PDFInfo
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- CN113489220A CN113489220A CN202110865801.4A CN202110865801A CN113489220A CN 113489220 A CN113489220 A CN 113489220A CN 202110865801 A CN202110865801 A CN 202110865801A CN 113489220 A CN113489220 A CN 113489220A
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- 230000005855 radiation Effects 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 113
- 230000017525 heat dissipation Effects 0.000 claims abstract description 36
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 230000003749 cleanliness Effects 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The application provides an inner loop heat radiation structure and motor. The internal circulation heat dissipation structure comprises a motor cylinder (1), wherein at least two liquid flow channels (17) extending along the axial direction are arranged on the motor cylinder (1), an outer gas flow channel (2) penetrating along the axial direction is arranged on the motor cylinder (1) between every two adjacent liquid flow channels (17), an inner gas flow channel (21) is formed on the inner peripheral side of the motor cylinder (1), and the inner gas flow channel (21) is communicated with the outer gas flow channel (2) to form an internal circulation air channel. According to the inner loop heat radiation structure of this application, can guarantee air inlet humidity and cleanliness factor, can improve the inside heat exchange efficiency of coolant liquid and air or motor simultaneously.
Description
Technical Field
The application relates to the technical field of motors, in particular to an internal circulation heat dissipation structure and a motor.
Background
The high-speed motor has the characteristics of high efficiency, small volume, compact structure and high power density, corresponding heat loss is concentrated, and the temperature rise in the motor is high. The control precision of the magnetic suspension bearing is reduced due to the fact that the insulation of the winding fails due to the excessive temperature rise of the motor stator winding, the permanent magnet is demagnetized due to the excessive temperature rise of the rotor, and the control precision of the magnetic suspension bearing is reduced due to the excessive temperature rise of the magnetic suspension bearing. In order to ensure the safe and stable operation of the high-speed motor, a novel cooling structure needs to be developed aiming at the characteristics of the interior of the motor. Meanwhile, in order to ensure the moisture-proof, explosion-proof, dust-proof and corrosion-resistant performances of the motor, the designed heat dissipation structure needs to ensure that the cleanliness and the humidity of cooling air inlet meet the requirements.
The cooling system matched with the high-speed motor usually adopts an air cooling structure or a water cooling structure. The single air cooling cannot achieve internal circulation cooling, the air inlet is connected with the outside air, the air outlet is connected with the air inlet inside the motor, and the air inlet humidity and cleanliness cannot be guaranteed; meanwhile, the water-cooling structure is an external structure or an internal spiral structure of the machine body, and the heat exchange efficiency with air or the inside of the motor is low.
Disclosure of Invention
Therefore, the technical problem that this application will be solved lies in providing an inner loop heat radiation structure and motor, can guarantee air inlet humidity and cleanliness factor, can improve the inside heat exchange efficiency of coolant liquid and air or motor simultaneously.
In order to solve the problem, the application provides an inner loop heat radiation structure, including the motor barrel, be provided with two at least liquid flow channels that extend along the axial on the motor barrel, be provided with the outer gas flow channel that runs through along the axial on the motor barrel between two adjacent liquid flow channels, the inner peripheral side of motor barrel is formed with interior gas flow channel, interior gas flow channel and outer gas flow channel intercommunication, form the inner loop wind channel.
Preferably, the wall thickness between the outer gas flow channel and the adjacent two liquid flow channels is the same.
Preferably, the number of the liquid flow channels is multiple, the multiple liquid flow channels are uniformly distributed at intervals along the circumferential direction of the motor cylinder, and the outer gas flow channels and the liquid flow channels are alternately arranged along the circumferential direction of the motor cylinder; and/or the liquid flow passage is a fin type liquid cooling flow passage.
Preferably, the minimum distance between the outer gas flow channel and the central axis of the motor cylinder is greater than the minimum distance between the liquid flow channel and the central axis of the motor cylinder, and the maximum distance between the outer gas flow channel and the central axis of the motor cylinder is greater than the maximum distance between the liquid flow channel and the central axis of the motor cylinder.
Preferably, adjacent liquid runners are communicated through a communication runner extending along the circumferential direction of the motor cylinder, and the communication runner is located on the radial outer side or the radial inner side of the outer gas runner.
Preferably, the liquid flow passages are connected in series, each liquid flow passage comprises a flow passage inlet and a flow passage outlet, the flow passage inlet is positioned at the initial end part of the liquid flow passage, and the flow passage outlet is positioned at the tail end part of the liquid flow passage.
Preferably, the liquid channels are connected in parallel, each liquid channel comprises a channel inlet and a channel outlet, the channel inlet is located at the first end of the liquid channel at the bottom, the channel outlet is located at the second end of the liquid channel at the top, and the first end and the second end are different ends.
Preferably, the communicating flow channels are communicated in the circumferential direction to form annular flow channels, the first ends and the second ends of the liquid flow channels are respectively provided with the annular flow channels, the annular flow channel located at the first end of the liquid flow channel communicates the first ends of the liquid flow channels, and the annular flow channel located at the second end of the liquid flow channel communicates the second ends of the liquid flow channels.
Preferably, the liquid flow channel is divided into a multi-section flow channel along the axial direction, and the minimum distances between at least two sections of the liquid flow channel and the central axis of the motor cylinder are different.
Preferably, a motor rotor is arranged in the motor cylinder, a driving fan is arranged at one end of the motor rotor, and the driving fan provides air circulation flowing power for the internal circulation air duct.
Preferably, the outer peripheral side of the driving fan is sleeved with a baffle ring, the baffle ring is fixedly arranged on the inner wall of the motor cylinder, and the inner diameter of the baffle ring is larger than the outer diameter of the driving fan.
Preferably, the driven fan is mounted on the air inlet side of the driving fan, the driven fan is mounted on the motor rotor through a sliding piece, and the driven fan can rotate relative to the driving fan through the sliding piece.
Preferably, a first vane diffuser is arranged at the end part of the first end of the motor cylinder, and the first vane diffuser and the motor rotor form sealing fit through a first seal and a first oil blocking sleeve.
Preferably, a second vane diffuser is arranged at the end part of the second end of the motor cylinder, and the second vane diffuser and the motor rotor form sealing fit through a second seal and a second oil blocking sleeve.
Preferably, the first end of the inner peripheral side of the motor cylinder body is provided with a front bearing shell, the second end of the inner peripheral side of the motor cylinder body is provided with a rear bearing shell, the middle of the inner peripheral side of the motor cylinder body is provided with a motor winding, a front radial iron core, a rotor iron core, a rear radial iron core, a front axial iron core, a thrust bearing and a rear axial iron core are sequentially arranged on the motor rotor, and an inner gas flow channel is respectively arranged on the front bearing shell, the front radial iron core, the motor winding, the rotor iron core, the rear radial iron core, the rear bearing shell, the front axial iron core, the thrust bearing and the rear axial iron core.
According to another aspect of the present application, there is provided an electric machine including an internal circulation heat dissipation structure, the internal circulation heat dissipation structure being the internal circulation heat dissipation structure described above.
The application provides an inner loop heat radiation structure, including the motor barrel, be provided with two at least liquid flow channels that extend along the axial on the motor barrel, be provided with the outer gas flow channel that runs through along the axial on the motor barrel between two adjacent liquid flow channels, the inner periphery side of motor barrel is formed with interior gas flow channel, interior gas flow channel and outer gas flow channel intercommunication, form the inner loop wind channel. The utility model provides an inner loop heat radiation structure, gas flow channel and liquid flow channel direct processing are on the motor barrel, can form integral heat radiation structure, the structure is compacter, outer gas flow channel and liquid flow channel form circumference and arrange in turn, and liquid flow channel adopts the fin formula runner, can guarantee cooling liquid and the inside area of contact of forced air cooling runner and motor, can increase heat exchange efficiency, outer gas flow channel and interior gas flow channel form the inner loop runner that is located the motor barrel inside, can guarantee the inside air inlet humidity and the cleanliness factor of motor, satisfy the demand in the aspects such as dampproofing explosion-proof dustproof anticorrosion of motor.
Drawings
Fig. 1 is a schematic cross-sectional view of an internal circulation heat dissipation structure according to an embodiment of the present application;
fig. 2 is a perspective view of an internal circulation heat dissipation structure according to an embodiment of the present application;
fig. 3 is an end face structure view of an internal circulation heat dissipation structure according to an embodiment of the present application;
FIG. 4 is a schematic view of a liquid flow path structure of an internal circulation heat dissipation structure according to an embodiment of the present application;
FIG. 5 is a schematic diagram of an outer gas flow channel structure of an inner circulation heat dissipation structure according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an internal circulation heat dissipation structure according to an embodiment of the present application;
FIG. 7 is a schematic sectional view of the inner circulation heat dissipation structure of FIG. 6 along the direction B-B;
FIG. 8 is a schematic cross-sectional view of the inner circulation heat dissipation structure of FIG. 6;
fig. 9 is a schematic view of a flow channel structure of an internal circulation heat dissipation structure according to an embodiment of the present application.
The reference numerals are represented as:
1. a motor cylinder; 2. an outer gas flow channel; 3. a first vane diffuser; 4. a first seal; 5. a first oil blocking sleeve; 6. a motor rotor; 7. a front bearing housing; 8. a motor winding; 9. a rotor core; 10. a driven fan; 11. a slider; 12. driving a fan; 13. a baffle ring; 14. a second oil blocking sleeve; 15. a second seal; 16. a second vane diffuser; 17. a liquid flow passage; 18. a flow channel inlet; 19. a flow channel outlet; 20. a flow passage is communicated; 21. an inner gas flow path; 22. an overflow channel; 23. a tapered region; 24. a first annular flow passage; 25. a second annular flow passage; 26. a rear radial iron core; 27. a rear bearing housing; 28. a front axial core; 29. a thrust bearing; 30. a rear axial core; 31. a front radial core.
Detailed Description
Referring to fig. 1 to 9 in combination, according to an embodiment of the present application, the internal circulation heat dissipation structure includes a motor cylinder 1, at least two liquid flow channels 17 extending in an axial direction are provided on the motor cylinder 1, an external gas flow channel 2 penetrating in the axial direction is provided on the motor cylinder 1 between two adjacent liquid flow channels 17, an internal gas flow channel 21 is formed on an inner circumferential side of the motor cylinder 1, and the internal gas flow channel 21 is communicated with the external gas flow channel 2 to form an internal circulation air duct.
The utility model provides an inner loop heat radiation structure, outer gas runner 2 and liquid runner 17 direct processing are on the motor barrel, can form integral heat radiation structure, the structure is compacter, outer gas runner 2 and liquid runner 17 form circumference and arrange in turn, and liquid runner 17 adopts the fin formula runner, can guarantee cooling liquid and air-cooled runner and the inside area of contact of motor, can increase heat exchange efficiency, outer gas runner 2 and interior gas runner 21 intercommunication form the inner loop runner that is located the motor barrel inside, make heat transfer air at motor inner loop, can guarantee the inside air inlet humidity and the cleanliness factor of motor, satisfy the demand of aspects such as dampproofing explosion-proof dustproof anticorrosion of motor.
In one embodiment, the wall thickness between the outer gas channel 2 and the two adjacent liquid channels 17 is the same. The liquid flow passage 17 is, for example, a fin type liquid cooling flow passage.
In this embodiment, the wall thickness between two liquid runners 17 of outer gas runner 2 and circumference both sides is the same for the heat transfer between the liquid runner 17 of both sides and the outer gas runner 2 is more even, and outer gas runner 2 and liquid runner 17 are long narrow type structure, can guarantee that the inside hot-blast and liquid runner 17 that flow through motor barrel 1 have sufficient area of contact, can improve the heat exchange efficiency between outer gas runner 2 and the liquid runner 17.
In one embodiment, the number of the liquid flow channels 17 is multiple, the multiple liquid flow channels 17 are uniformly distributed at intervals along the circumferential direction of the motor cylinder 1, and the outer gas flow channels 2 and the liquid flow channels 17 are alternately arranged along the circumferential direction of the motor cylinder 1. In this embodiment, outer gas runner 2 and liquid runner 17 just evenly arrange along the axial of motor barrel 1 in turn, can enough make and form multiple heat transfer structure between outer gas runner 2 and the liquid runner 17, increase heat transfer area, can guarantee again that the heat transfer between gas and the liquid is more even, improves heat exchange efficiency.
In one embodiment, the minimum distance between the outer gas flow channel 2 and the central axis of the motor cylinder 1 is greater than the minimum distance between the liquid flow channel 17 and the central axis of the motor cylinder 1, and the maximum distance between the outer gas flow channel 2 and the central axis of the motor cylinder 1 is greater than the maximum distance between the liquid flow channel 17 and the central axis of the motor cylinder 1, so that the position of the outer gas flow channel 2 in the radial direction of the motor cylinder 1 can be located in the range of the liquid flow channel 17 in the radial direction of the motor cylinder 1, the outer gas flow channel 2 can be completely located in the heat exchange central area of the liquid flow channel 17, and efficient heat exchange between gas and liquid is ensured.
In one embodiment, the adjacent liquid flow passages 17 are communicated with each other through a communication flow passage 20 extending along the circumferential direction of the motor cylinder 1, and the communication flow passage 20 is located at the radial outer side or the radial inner side of the outer gas flow passage 2. In this embodiment, the communicating flow channel 20 is disposed between the adjacent liquid flow channels 17, so that the communication between the adjacent liquid flow channels 17 can be conveniently realized, and the communicating flow channel 20 is disposed on the radial outer side and the radial inner side of the outer gas flow channel 2, so that a gap is formed between the communicating flow channel 20 and the outer gas flow channel 2, the disposed position of the communicating flow channel 20 can be avoided from avoiding the outer gas flow channel 2, and the communicating flow channel 20 is prevented from blocking the arrangement of the outer gas flow channel 2.
In one embodiment, the liquid channels 17 are connected in series, and the liquid channels 17 include a channel inlet 18 and a channel outlet 19, wherein the channel inlet 18 is located at the beginning end of the liquid channel 17, and the channel outlet 19 is located at the end of the liquid channel 17.
In one embodiment, the liquid channels 17 are connected in parallel, the liquid channels 17 include a channel inlet 18 and a channel outlet 19, the channel inlet 18 is located at a first end of the liquid channel 17 at the bottom, and the channel outlet 19 is located at a second end of the liquid channel 17 at the top, the first end and the second end being different.
In the present embodiment, the communication flow passages 20 are circumferentially communicated to form an annular flow passage, the first end of the liquid flow passage 17 is provided with a first annular flow passage 24, the second end of the liquid flow passage 17 is provided with a second annular flow passage 25, the first annular flow passage 24 at the first end of the liquid flow passage 17 communicates the first end of each liquid flow passage 17, and the second annular flow passage 25 at the second end of the liquid flow passage 17 communicates the second end of each liquid flow passage 17.
The fin type liquid flow channels extending along the axial direction are communicated with the annular flow channels at two ends of the cylinder body, the communication flow channel 20 between two adjacent fin type liquid flow channels is an arc-shaped flow channel, cooling liquid enters the first annular flow channel 24 on the left side of the motor cylinder body 1 from the flow channel inlet 18 at the bottom of the motor cylinder body 1 and then respectively enters each fin type liquid flow channel through the first annular flow channel 24, the cooling liquid completes heat exchange with hot air in the inner wall of the motor cylinder body 1 and the outer gas flow channel 2 in the fin type liquid flow channels, then enters the second annular flow channel 25 at the right end of the motor cylinder body 1, finally flows out from the flow channel outlet 19 at the top of the right end of the motor cylinder body 1, and flows back to the inside of the motor after heat dissipation is carried out on the outer side, and heat exchange circulation is carried out.
In one embodiment, the liquid flow channel 17 is divided into a multi-section flow channel along the axial direction, and the minimum distance between at least two sections of the liquid flow channel 17 and the central axis of the motor cylinder 1 is different, so that the appropriate liquid flow channel 17 can be set for key devices such as a bearing assembly, a motor stator and the like, and the heat dissipation efficiency of the devices is further improved.
The liquid flow channel 17 can axially penetrate through the whole motor cylinder body 1, and the liquid flow channel can be only processed on the cylinder wall outside the motor stator, so that the structure of the cylinder casting sand core is simpler, and the production is convenient.
In one embodiment, a motor rotor 6 is arranged in the motor cylinder 1, one end of the motor rotor 6 is provided with a driving fan 12, and the driving fan 12 provides air circulation flowing power for the internal circulation air duct. The driving fan 12 is fixedly sleeved on the motor rotor 6, the driving fan 12 is located on the axial outer side of the motor winding 8, and the axial length of the driving fan 12 needs to be increased in the inner cavity of the motor barrel 1 so as to facilitate the arrangement of the driving fan 12. When the motor is started, the motor rotor 6 rotates to drive the driving fan 12 to rotate, so that a right wind pressure is formed, gas in the inner gas channel 21 on the inner peripheral side of the motor cylinder 1 flows rightwards, and gas in the outer gas channel 2 on the cylinder on the outer side of the motor flows leftwards, so that power is provided for air internal circulation.
In one embodiment, a baffle ring 13 is sleeved on the outer periphery of the driving fan 12, the baffle ring 13 is fixedly arranged on the inner wall of the motor barrel 1, and the inner diameter of the baffle ring 13 is larger than the outer diameter of the driving fan 12. In this embodiment, the outer diameter of the baffle ring 13 is slightly larger than the inner diameter of the motor cylinder 1, the baffle ring 13 is sleeved on the inner wall of the motor cylinder 1 in an interference fit manner, and the inner diameter of the baffle ring 13 is slightly larger than the outer diameter of the driving fan 12, so that a blocking effect can be formed on the air flow at the air outlet side of the driving fan 12, the hot air at the air outlet side of the driving fan 12 is effectively prevented from flowing back to the air inlet side of the driving fan 12, and the air flow efficiency and the cooling efficiency are improved.
In one embodiment, a driven fan 10 is mounted on the air inlet side of the driving fan 12, the driven fan 10 is mounted on the motor rotor 6 through a slider 11, and the driven fan 10 is rotatable relative to the driving fan 12 through the slider 11. Driven fan 10 is driven by the wind pressure that driving fan 12 rotated and forms, forms the wind pressure to the air-out side when driving fan 12 rotated, drives driven fan 10 and rotates, and driven fan 10 rotates can form the wind pressure towards the air-out side of driving fan 12 in the space between driven fan 10 and driving fan 12, prevents to continue to flow backward from driving fan 10 and keeping off the one side of keeping away from driving fan 12 of the hot-blast that flows backward between 13 clearances of driving fan 12 and fender ring.
In the embodiment of the application, the sliding part 11 is similar to a bearing structure, the inner diameter of the sliding part is slightly smaller than that of the motor rotor 6, and the sliding part is sleeved on the motor rotor 6 in an interference fit manner; the outer diameter side of the sliding member 11, like the outer end of the bearing, can be slid in the circumferential direction with respect to the inner diameter, thereby ensuring that the rotation of the driven fan 10 mounted on the outer diameter of the sliding member 11 is driven by the wind pressure, not directly by the motor rotor 6. Therefore, when the driving fan 12 stops rotating along with the motor rotor 6, the motor rotor 6 can still rotate under the inertia effect, so as to provide the wind pressure towards the air outlet side of the driving fan 12, and further effectively avoid the backflow of the hot wind.
In one embodiment, the first end of the motor cylinder 1 is provided with a first vane diffuser 3, and the first vane diffuser 3 and the motor rotor 6 are in sealing fit through a first seal 4 and a first oil blocking sleeve 5.
In one embodiment, the second end of the motor cylinder 1 is provided with a second vane diffuser 16, and the second vane diffuser 16 and the motor rotor 6 form a sealing fit through a second seal 15 and a second oil blocking sleeve 14.
The first seal 4 and the second seal 15 are both comb seals.
In this embodiment, because there are the broach at the motor both ends sealed, hinder devices such as oil jacket, diffuser and guarantee the inside gas tightness of motor, and the gas flow of this application only circulates between the air flue inside the motor and on the barrel, so do not need extra atmoseal piece, only rely on the atmoseal piece at motor both ends just can guarantee the gas tightness of inner loop runner, and the structure is simpler, and it is more convenient to realize.
In one embodiment, a front bearing housing 7 is installed at a first end of the inner circumference side of the motor cylinder 1, a rear bearing housing 27 is installed at a second end, a motor winding 8 is installed in the middle, a front radial iron core 31, a rotor iron core 9, a rear radial iron core 26, a front axial iron core 28, a thrust bearing 29 and a rear axial iron core 30 are sequentially arranged on the motor rotor 6, and an inner gas flow passage 21 is respectively arranged on the front bearing housing 7, the front radial iron core 31, the motor winding 8, the rotor iron core 9, the rear radial iron core 26, the rear bearing housing 27, the front axial iron core 28, the thrust bearing 29 and the rear axial iron core 30.
In the present embodiment, the flow passage 22 is formed between the front bearing housing 7 and the first vane diffuser 3, the flow passage 22 is also formed between the rear axial core 30 and the rear bearing housing 27 and the second vane diffuser 16, the flow passages 22 at the front and rear ends connect the two ends of the outer gas flow passage 2 and the inner gas flow passage 21 in series to form an inner circulation air duct that is circumferentially communicated, and the inner circulation flow of the air flow is realized under the driving action of the driving fan 12.
In one embodiment, the tapered regions 23 are disposed at two ends of the motor cylinder 1, the tapered regions 23 extend along the circumferential direction of the motor cylinder 1 and communicate the outer gas flow channel 2 with the overflowing channel 22, and the existence of the tapered regions 23 can improve the flowing state of the gas flow, effectively reduce the flow blocking phenomenon, reduce the gas flowing noise, and improve the gas flowing efficiency.
According to an embodiment of the present application, the motor includes an internal circulation heat dissipation structure, which is the internal circulation heat dissipation structure described above.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (16)
1. The utility model provides an inner loop heat radiation structure, its characterized in that, includes motor barrel (1), be provided with two at least liquid flow channels (17) that extend along the axial on motor barrel (1), adjacent two between liquid flow channel (17) be provided with outer gas flow channel (2) that run through along the axial on motor barrel (1), the interior periphery of motor barrel (1) is formed with interior gas flow channel (21), interior gas flow channel (21) with outer gas flow channel (2) intercommunication forms the inner loop wind channel.
2. The internally circulating heat dissipating structure according to claim 1, wherein the wall thickness between the outer gas flow channel (2) and the adjacent two liquid flow channels (17) is the same.
3. The internal circulation heat dissipation structure of claim 1, wherein the liquid flow channel (17) is provided in plurality, the liquid flow channels (17) are uniformly distributed at intervals along the circumferential direction of the motor cylinder (1), and the outer gas flow channel (2) and the liquid flow channel (17) are alternately arranged along the circumferential direction of the motor cylinder (1); and/or the liquid flow channel (17) is a fin type liquid cooling flow channel.
4. The internal circulation heat dissipation structure according to claim 1, wherein a minimum distance between the outer gas flow passage (2) and a central axis of the motor cylinder (1) is greater than a minimum distance between the liquid flow passage (17) and a central axis of the motor cylinder (1), and a maximum distance between the outer gas flow passage (2) and a central axis of the motor cylinder (1) is greater than a maximum distance between the liquid flow passage (17) and a central axis of the motor cylinder (1).
5. The internal circulation heat dissipation structure according to claim 1, wherein the adjacent liquid flow channels (17) are communicated with each other through a communication flow channel (20) extending in the circumferential direction of the motor cylinder (1), and the communication flow channel (20) is located radially outside or radially inside the outer gas flow channel (2).
6. The internal circulation heat dissipation structure as recited in claim 5, wherein the liquid flow channels (17) are connected in series, the liquid flow channels (17) include a flow channel inlet (18) and a flow channel outlet (19), the flow channel inlet (18) is located at a starting end of the liquid flow channels (17), and the flow channel outlet (19) is located at a terminal end of the liquid flow channels (17).
7. The inner circulation heat dissipation structure as recited in claim 5, wherein the liquid flow channels (17) are connected in parallel, the liquid flow channels (17) include a channel inlet (18) and a channel outlet (19), the channel inlet (18) is located at a first end of the liquid flow channel (17) at the bottom, and the channel outlet (19) is located at a second end of the liquid flow channel (17) at the top, the first end and the second end being different.
8. The internal circulation heat dissipation structure as recited in claim 7, wherein the communication flow channels (20) are communicated in a circumferential direction to form annular flow channels, the annular flow channels are provided at first and second ends of the liquid flow channels (17), the annular flow channels at the first ends of the liquid flow channels (17) communicate the first ends of the liquid flow channels (17), and the annular flow channels at the second ends of the liquid flow channels (17) communicate the second ends of the liquid flow channels (17).
9. The internal circulation heat dissipation structure of claim 1, wherein the liquid flow channel (17) is divided into a multi-section flow channel along the axial direction, and the minimum distances between at least two sections of the liquid flow channel (17) and the central axis of the motor cylinder (1) are different.
10. The internal circulation heat dissipation structure according to any one of claims 1 to 9, wherein a motor rotor (6) is disposed in the motor cylinder (1), a driving fan (12) is disposed at one end of the motor rotor (6), and the driving fan (12) provides air circulation flow power for the internal circulation air duct.
11. The internal circulation heat dissipation structure of claim 10, wherein a baffle ring (13) is sleeved on the outer peripheral side of the driving fan (12), the baffle ring (13) is fixedly arranged on the inner wall of the motor cylinder (1), and the inner diameter of the baffle ring (13) is larger than the outer diameter of the driving fan (12).
12. The internal circulation heat dissipation structure as recited in claim 10, wherein a driven fan (10) is mounted to an air intake side of the driving fan (12), the driven fan (10) is mounted to the motor rotor (6) via a slider (11), and the driven fan (10) is rotatable with respect to the driving fan (12) via the slider (11).
13. The internal circulation heat dissipation structure of claim 10, wherein a first vane diffuser (3) is arranged at the first end of the motor cylinder (1), and the first vane diffuser (3) and the motor rotor (6) are in sealing fit through a first seal (4) and a first oil blocking sleeve (5).
14. The internal circulation heat dissipation structure as recited in claim 10, wherein a second vane diffuser (16) is disposed at the second end of the motor cylinder (1), and a sealing fit is formed between the second vane diffuser (16) and the motor rotor (6) through a second seal (15) and a second oil blocking sleeve (14).
15. The inner circulation heat dissipation structure according to claim 10, wherein a front bearing housing (7) is installed at a first end of the inner peripheral side of the motor cylinder (1), a rear bearing housing (27) is installed at a second end of the inner peripheral side of the motor cylinder, a motor winding (8) is installed in the middle of the inner peripheral side of the motor cylinder, a front radial iron core (31), a rotor iron core (9), a rear radial iron core (26), a front axial iron core (28), a thrust bearing (29) and a rear axial iron core (30) are sequentially arranged on the motor rotor (6), and the inner gas flow passage (21) is respectively arranged on the front bearing housing (7), the front radial iron core (31), the motor winding (8), the rotor iron core (9), the rear radial iron core (26), the rear bearing housing (27), the front axial iron core (28), the thrust bearing (29) and the rear axial iron core (30).
16. An electric machine comprising an internal circulation heat dissipation structure, characterized in that the internal circulation heat dissipation structure is the internal circulation heat dissipation structure of any one of claims 1 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110865801.4A CN113489220A (en) | 2021-07-29 | 2021-07-29 | Internal circulation heat radiation structure and motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110865801.4A CN113489220A (en) | 2021-07-29 | 2021-07-29 | Internal circulation heat radiation structure and motor |
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| CN113489220A true CN113489220A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110865801.4A Pending CN113489220A (en) | 2021-07-29 | 2021-07-29 | Internal circulation heat radiation structure and motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742879A (en) * | 2023-05-16 | 2023-09-12 | 广东聚磁动力科技有限公司 | Air-cooled heat radiation structure and magnetic levitation motor |
-
2021
- 2021-07-29 CN CN202110865801.4A patent/CN113489220A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742879A (en) * | 2023-05-16 | 2023-09-12 | 广东聚磁动力科技有限公司 | Air-cooled heat radiation structure and magnetic levitation motor |
| CN116742879B (en) * | 2023-05-16 | 2024-06-28 | 广东聚磁动力科技有限公司 | Air-cooled heat radiation structure and magnetic levitation motor |
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