CN116989128A - Heat radiation structure integrating motor and speed reducer - Google Patents
Heat radiation structure integrating motor and speed reducer Download PDFInfo
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- CN116989128A CN116989128A CN202310779899.0A CN202310779899A CN116989128A CN 116989128 A CN116989128 A CN 116989128A CN 202310779899 A CN202310779899 A CN 202310779899A CN 116989128 A CN116989128 A CN 116989128A
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 31
- 230000005855 radiation Effects 0.000 title claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 192
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000110 cooling liquid Substances 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 17
- 230000017525 heat dissipation Effects 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims 4
- 239000002826 coolant Substances 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a heat radiation structure for integrating a motor and a speed reducer, which comprises an integrated shell formed by a motor shell and the speed reducer shell, wherein the motor shell is integrated above the speed reducer shell, a plurality of layers of annular cooling channels which are mutually communicated and can split cooling liquid are arranged in the motor shell from top to bottom, an end face cooling channel which is communicated with the lowest layer of annular cooling channels and is used for cooling the connecting end face of the motor shell and the speed reducer shell is arranged below the plurality of layers of annular cooling channels, and a channel inlet which is communicated with the uppermost layer of annular cooling channels and a channel outlet which is communicated with the lowest layer of annular cooling channels are arranged on the motor shell. The multi-layer annular cooling flow channels arranged in the motor shell are all of parallel structures, so that the flow resistance of a water channel and the power consumption of a water pump can be effectively reduced; under the condition of the same water channel sectional area, the water channels with parallel structures can reduce the inlet-outlet temperature difference of the cooling medium to a certain extent, and improve the heat transfer uniformity of the motor assembly.
Description
Technical Field
The invention relates to the technical field of automobile cooling structures, in particular to a heat dissipation structure integrated with a motor and a speed reducer.
Background
In the cooling system of the electric drive assembly of the new energy automobile, most of cooling medium enters from a water inlet of a controller, flows to a motor after cooling the IGBT, cools the motor assembly through a motor runner, and finally flows out from a water outlet of the motor. The water cooling mode of the motor is that an axial S-shaped water channel or a spiral water channel is arranged on the motor shell, the water inlet of the motor is connected with the water outlet of the controller, the water outlet of the motor is positioned on the side surface of the motor shell, and cooling medium flows along the axial S-shaped or spiral flow channel after entering from the water inlet of the motor and then flows out from the water outlet.
The problems existing in the prior art are as follows: 1. the cooling system is single in structure, and cooling medium flows to the motor outlet in a unidirectional way after entering the motor from the controller, so that most of heat of the speed reducer can be taken away only by means of lubricating oil in the electric drive assembly, and phenomena such as shaft tooth burnout and the like are easy to occur in practical application. 2. The friction loss is big when the motor rotates at a high speed, and bearing calorific capacity is big, and especially under the trend of integrating now, the motor is integrated with the reduction gear casing, and the motor shaft is coaxial with the reduction gear input shaft, and bearing load is very big this moment, and present cooling structure can't cool off the bearing room, easily appears the bearing phenomenon of burning out. 3. The axial S-shaped cooling flow passage of the motor is easy to form a dead water area in a bending area, a local heat collecting phenomenon occurs, heat exchange efficiency is reduced, fluid dead water area can be reduced by reducing the width of the water passage, the contact area of the water passage can be reduced by reducing the width of the water passage, and flow resistance of the flow passage is increased. 4. The temperature of the fluid gradually rises in the spiral flow passage flow, so that the heat exchange capacity of the flow passage is reduced along with the flow of the fluid, and the phenomenon of uneven heat dissipation is easy to occur.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide the heat dissipation structure which can cool the speed reducer and the bearing chamber, has various flow directions of cooling medium, is not easy to form a dead water area and has uniform heat dissipation and is integrated with the speed reducer.
In order to achieve the purpose, the heat dissipation structure for the motor and the speed reducer, which is designed by the invention, comprises an integrated shell body consisting of a motor shell body and a speed reducer shell body, wherein the motor shell body is integrated above the speed reducer shell body, a plurality of layers of annular cooling flow channels which are mutually communicated and can split cooling liquid are arranged in the motor shell body from top to bottom, end face cooling flow channels which are communicated with the lowest layer of annular cooling flow channels and are used for cooling the connecting end faces of the motor shell body and the speed reducer shell body are arranged below the plurality of layers of annular cooling flow channels, and a flow channel inlet communicated with the uppermost layer of annular cooling flow channels and a flow channel outlet communicated with the lowest layer of annular cooling flow channels are arranged on the motor shell body.
Further, the front side part of the uppermost annular cooling flow passage is communicated with the flow passage inlet, the rear side parts of the upper and lower adjacent annular cooling flow passages are communicated through a rear connecting flow passage arranged along the height direction of the motor shell, and a first flow dividing structure for dividing the cooling liquid of the upper annular cooling flow passage to the left and right sides of the lower annular cooling flow passage is arranged in the rear connecting flow passage; the rear side part of the lowest layer annular cooling flow passage is communicated with the flow passage outlet, the front side parts of the upper and lower adjacent layers of annular cooling flow passages are communicated through a front connecting flow passage arranged along the height direction of the motor shell, and a second flow dividing structure for dividing the cooling liquid of the upper layer annular cooling flow passage to the left side and the right side of the lower layer annular cooling flow passage is arranged in the front connecting flow passage; the first and second flow dividing structures are alternately arranged up and down.
Further, the first flow dividing structure comprises a first flow dividing partition plate vertically fixed between the rear side parts of the upper layer annular cooling flow channel and the lower layer annular cooling flow channel, and the middle part of the first flow dividing partition plate is positioned in the rear connecting flow channel.
Further, the top surface of the first split flow baffle is fixed on the top surface of the rear side part of the upper annular cooling flow channel, the bottom surface of the first split flow baffle is fixed on the bottom surface of the rear side part of the lower annular cooling flow channel, the front side surface of the first split flow baffle is fixed on the inner side surface of the upper annular cooling flow channel, the inner side surface of the rear connecting flow channel and the inner side surface of the lower annular cooling flow channel from top to bottom in a fitting manner, and the rear side surface of the first split flow baffle is fixed on the outer side surface of the upper annular cooling flow channel, the outer side surface of the rear connecting flow channel and the outer side surface of the lower annular cooling flow channel from top to bottom in a fitting manner.
Further, the second flow dividing structure comprises a second flow dividing partition plate fixed between the front side parts of the upper layer of annular cooling flow channels and the lower layer of annular cooling flow channels, and the middle part of the second flow dividing partition plate is positioned in the front connecting flow channels.
Further, the top surface of the second flow dividing baffle is fixed on the top surface of the front side part of the upper annular cooling flow passage, the bottom surface of the second flow dividing baffle is fixed on the bottom surface of the front side part of the lower annular cooling flow passage, the front side surface of the second flow dividing baffle is fixed on the outer side surface of the upper annular cooling flow passage, the outer side surface of the front connecting flow passage and the outer side surface of the lower annular cooling flow passage from top to bottom in a fitting manner, and the rear side surface of the second flow dividing baffle is fixed on the inner side surface of the upper annular cooling flow passage, the inner side surface of the front connecting flow passage and the inner side surface of the lower annular cooling flow passage from top to bottom in a fitting manner.
Further, the end face cooling flow channel comprises an inner annular end face cooling flow channel which is arranged on the connecting end face of the motor shell and the reducer shell, and an outer annular end face cooling flow channel which is communicated with the water outlet end of the inner annular end face cooling flow channel and is arranged on the connecting end face of the motor shell and the reducer shell; the bottommost annular cooling flow passage comprises a bottommost front semi-annular cooling flow passage communicated with the water outlet end of the upper layer and the water inlet end of the inner annular end face cooling flow passage and a bottommost rear semi-annular cooling flow passage communicated with the water outlet end of the outer annular end face cooling flow passage and the flow passage outlet.
Further, the inner annular end face cooling flow passage is arranged around a bearing seat shared by the motor and the speed reducer.
Further, a liquid separation rib plate is arranged between the inner annular end face cooling flow passage and the outer annular end face cooling flow passage.
Furthermore, turbulence pieces are arranged in the inner annular end face cooling flow passage and the outer annular end face cooling flow passage.
The beneficial effects of the invention are as follows: the multi-layer annular cooling flow channels arranged in the motor shell are all of parallel structures, so that the flow resistance of a water channel and the power consumption of a water pump can be effectively reduced; under the condition of the same water channel sectional area, the water channels with parallel structures can reduce the inlet-outlet temperature difference of the cooling medium to a certain extent, and improve the heat transfer uniformity of the motor assembly. The end face cooling flow passage can enable fluid to directly cool the bearing chamber, so that the bearing temperature is effectively reduced, meanwhile, the end face cooling flow passage can enable lubricating oil of the reduction gearbox to be effectively cooled, more heat is taken away, and the temperature of shaft teeth in the reduction gearbox is further reduced.
Drawings
FIG. 1 is an axial cross-sectional view of an integrated housing of the present invention;
FIG. 2 is an axial cross-sectional view of the inner housing of the motor of the present invention;
FIG. 3 is an isometric view of a cooling flow path within an integrated housing of the present invention;
FIG. 4 is a front axial cross-sectional view of a cooling flow passage in an integrated housing of the present invention;
FIG. 5 is a rear axial cross-sectional view of a cooling flow passage in an integrated housing of the present invention;
fig. 6 is a top view of an end cooling flow channel in accordance with the present invention.
The novel high-efficiency cooling device comprises a 1-motor shell (1.1-motor inner shell, 1.2-motor outer shell), a 2-reducer shell, a 3-annular cooling flow passage, a 4-end face cooling flow passage (4.1-inner annular end face cooling flow passage, 4.2-outer annular end face cooling flow passage), a 5-flow passage inlet, a 6-flow passage outlet, a 7-rear connecting flow passage, an 8-front connecting flow passage, a 9-first split partition plate, a 10-second split partition plate, a 11-lowermost front semi-annular cooling flow passage, a 12-lowermost rear semi-annular cooling flow passage, a 13-bearing seat, a 14-liquid separation rib plate and a 15-turbulent flow piece.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
The heat dissipation structure of the motor and the speed reducer, as shown in fig. 1-6, comprises an integrated shell formed by a motor shell 1 and a speed reducer shell 2, wherein the motor shell 1 is integrated above the speed reducer shell 2. The inside of the motor housing 1 is provided with a plurality of layers of annular cooling flow passages 3 which are communicated with each other and can split cooling liquid from top to bottom, and the invention is exemplified by an integrated housing with four layers of annular cooling flow passages 3. In the invention, the side where the runner inlet 5 is positioned is taken as the front side of the integrated shell, the side of the back surface of the runner inlet 5 is taken as the back side of the integrated shell, and the upper and lower sides of the height direction of the motor shell 1 are taken as the position standards of the multi-layer annular cooling runners.
An end face cooling runner 4 which is communicated with the lowest annular cooling runner and used for cooling the connecting end face of the motor shell 1 and the reducer shell 2 is arranged below the four-layer annular cooling runner 3, and a runner inlet 5 which is communicated with the highest annular cooling runner and a runner outlet 6 which is communicated with the lowest annular cooling runner are arranged on the motor shell 1.
As shown in fig. 3 and 5, the front side portion of the uppermost annular cooling flow passage is communicated with the flow passage inlet 5, the rear side portions of the uppermost annular cooling flow passage and the second annular cooling flow passage are communicated through a rear connecting flow passage 7 arranged along the height direction of the motor housing 1, and a first flow dividing structure for dividing the cooling liquid of the upper annular cooling flow passage to the left and right sides of the lower annular cooling flow passage is provided in the rear connecting flow passage 7; the device comprises a first split flow baffle 9 vertically fixed between the rear side parts of two adjacent layers of annular cooling flow channels, wherein the middle part of the first split flow baffle 9 is positioned in a rear connecting flow channel 7. The top surface of the first split-flow partition plate 9 is fixed on the top surface of the rear side part of the upper annular cooling flow passage, the bottom surface of the first split-flow partition plate 9 is fixed on the bottom surface of the rear side part of the lower annular cooling flow passage, the front side surface of the first split-flow partition plate 9 is fixed on the inner side surface of the upper annular cooling flow passage, the inner side surface of the rear connecting flow passage 7 and the inner side surface of the lower annular cooling flow passage from top to bottom in a fitting manner, and the rear side surface of the first split-flow partition plate 9 is fixed on the outer side surface of the upper annular cooling flow passage, the outer side surface of the rear connecting flow passage 7 and the outer side surface of the lower annular cooling flow passage from top to bottom in a fitting manner.
As shown in fig. 3 and 4, the rear side of the lowermost annular cooling flow passage is communicated with the flow passage outlet 6, the second annular cooling flow passage and the front side of the third annular cooling flow passage are communicated through a front connecting flow passage 8 arranged along the height direction of the motor housing 1, and a second flow dividing structure for dividing the cooling liquid of the upper annular cooling flow passage to the left and right sides of the lower annular cooling flow passage is arranged in the front connecting flow passage 8; the cooling device comprises a second split-flow partition plate 10 fixed between the front side parts of two adjacent upper and lower layers of annular cooling flow channels, and the middle part of the second split-flow partition plate 10 is positioned in a front connecting flow channel 8. The top surface of the second flow dividing baffle 10 is fixed on the top surface of the front side part of the upper annular cooling flow passage, the bottom surface of the second flow dividing baffle 10 is fixed on the bottom surface of the front side part of the lower annular cooling flow passage, the front side surface of the second flow dividing baffle 10 is fixedly attached to the outer side surface of the upper annular cooling flow passage, the outer side surface of the front connecting flow passage 8 and the outer side surface of the lower annular cooling flow passage from top to bottom, and the rear side surface of the second flow dividing baffle 10 is fixedly attached to the inner side surface of the upper annular cooling flow passage, the inner side surface of the front connecting flow passage 8 and the inner side surface of the lower annular cooling flow passage from top to bottom.
As shown in fig. 3 and 5, the cooling liquid on the left and right sides of the third layer annular cooling flow channel directly enters the fourth layer annular cooling flow channel (a split partition plate can be also arranged here), and the cooling liquid on one side is converged with the cooling liquid on the other side after passing through the end face cooling flow channel and is discharged out of the integrated shell through the flow channel outlet 6). As shown in fig. 3 and 6, the end face cooling flow passage 4 includes an inner annular end face cooling flow passage 4.1 formed on the connecting end face of the motor housing 1 and the reducer housing 2, and an outer annular end face cooling flow passage 4.2 formed on the connecting end face of the motor housing 1 and the reducer housing 2 and communicated with the water outlet end of the inner annular end face cooling flow passage 4.1. The bottommost annular cooling flow passage comprises a bottommost front semi-annular cooling flow passage 11 communicated with the water outlet end of the upper layer and the water inlet end of the inner annular end face cooling flow passage 4.1, and a bottommost rear semi-annular cooling flow passage 12 communicated with the water outlet end of the outer annular end face cooling flow passage 4.2 and the flow passage outlet 6. The inner annular end face cooling flow channel 4.1 is arranged around a bearing seat 13 common to the motor and the reducer. A liquid separation rib plate 14 is arranged between the inner annular end face cooling flow passage 4.1 and the outer annular end face cooling flow passage 4.2. Turbulence pieces 15 are arranged in the inner annular end face cooling flow passage 4.1 and the outer annular end face cooling flow passage 4.2.
In the invention, the motor inner shell 1.1 and the motor outer shell 1.2 are both manufactured by adopting a high-pressure casting process, the motor inner shell 1.1 and the speed reducer shell 2 are matched by friction stir welding, and the friction welding positions are a joint a of the top end part of the motor inner shell 1.1 and the motor outer shell 1.1 and a joint b of the motor inner shell 1.1 and the bearing seat 13 shown in fig. 1. The cooling flow passage consists of a motor side cooling flow passage (a multi-layer annular cooling flow passage 3) and a reduction box end face flow passage (an end face cooling flow passage 4), the motor side cooling flow passage is connected with the reduction box end face flow passage, and the integrated cooling flow passage can cool a motor stator and a motor rotor, a motor bearing and the reduction box. The motor side runner is parallelly connected runner structure, including a plurality of annular cooling runner 3 that set up along motor housing 1's direction of height interval, every annular cooling runner 3 is radial direction's annular runner, upper and lower adjacent two annular cooling runner 3 are linked together through axial connecting runner, lower floor's annular cooling runner 3 and reduction gearbox terminal surface runner intercommunication, terminal surface cooling runner is along the peripheral annular arrangement of the up end of reduction gearbox casing 2, divide into the inside and outside two-layer runner of mutual intercommunication, inlayer annular terminal surface cooling runner 4.1 and outer annular terminal surface cooling runner 4.2, be provided with banding vortex piece 15 in the inlayer annular terminal surface cooling runner 4.1, the circumference interval arrangement of banding vortex piece 15 along inlayer annular terminal surface cooling runner 4.1, be provided with single banding vortex piece 15 between every two sets of double-deck banding vortex pieces 15, such structure both can lead the coolant liquid, can carry out the vortex to the coolant liquid, consequently, the design width of inlayer annular terminal surface cooling runner 4.1 has been increased. The outer annular end face cooling flow passage 4.2 is provided with a plurality of spherical turbulence pieces 15 at intervals along the circumferential direction thereof, and turbulence is carried out on the cooling liquid. The fluid is divided into two flow paths after entering the annular cooling flow channel 3, and after cooling the motor assembly, the two flow paths are converged at the bottom of the motor, and then flow unidirectionally and flow into the flow channel at the end face of the reduction gearbox. The flow channel structure of the end face of the reduction gearbox is shown in fig. 6, and the turbulence piece 15 of the end face of the reduction gearbox can turbulence cooling liquid, so that the effects of increasing the flow velocity, improving the dead water area in the flow channel and enhancing heat exchange are achieved. The flow direction of the coolant in the flow path will be described with reference to fig. 4 and 5. Considering the boundary condition of the actual whole vehicle, the inlet and the outlet of the runner are positioned on the side of the motor. After entering the motor side flow channel from the flow channel inlet 5, the cooling liquid is divided into two paths of fluid, and flows along the parallel flow channels c and d respectively, wherein the flow directions of the two parallel flow channels are c, e, g, d, f, h, g flow channels are converged with h flow channels and then flow into the i flow channel, flow around the motor and then flow into the end face flow channel of the reduction gearbox, flow clockwise around the bearing seat 13 for one circle, flow into the flow channel j along the water-proof rib, flow anticlockwise along the j flow channel, fully cool the end face of the reduction gearbox, and flow back to the motor side and flow out from the flow channel outlet 6.
The multi-layer annular cooling flow channels arranged in the motor shell 1 are all of parallel structures, so that the flow resistance of a water channel and the power consumption of a water pump can be effectively reduced; under the condition of the same water channel sectional area, the water channels with parallel structures can reduce the inlet-outlet temperature difference of the cooling medium to a certain extent, and improve the heat transfer uniformity of the motor assembly. The end face cooling flow channel 4 can enable fluid to directly cool the bearing chamber, so that the bearing temperature is effectively reduced, meanwhile, the end face cooling flow channel 4 can enable lubricating oil of the reduction gearbox to be effectively cooled, more heat is taken away, and the temperature of shaft teeth in the reduction gearbox is further reduced.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a motor and integrated heat radiation structure of reduction gear, includes the integrated casing that motor casing (1) and reduction gear casing (2) are constituteed, its characterized in that: the motor housing (1) is integrated above the speed reducer housing (2), a plurality of layers of annular cooling flow channels (3) which are mutually communicated and can split cooling liquid are arranged in the motor housing (1) from top to bottom, a plurality of layers of end face cooling flow channels (4) which are communicated with the lowest layer of annular cooling flow channels and are used for cooling the connecting end faces of the motor housing (1) and the speed reducer housing (2) are arranged below the annular cooling flow channels (3), and a flow channel inlet (5) communicated with the uppermost layer of annular cooling flow channels and a flow channel outlet (6) communicated with the lowest layer of annular cooling flow channels are arranged on the motor housing (1).
2. The motor and decelerator integrated heat dissipation structure as recited in claim 1, wherein: the front side part of the uppermost annular cooling flow passage is communicated with the flow passage inlet (5), the rear side parts of the upper and lower adjacent annular cooling flow passages are communicated through a rear connecting flow passage (7) arranged along the height direction of the motor shell (1), and a first flow dividing structure for dividing the cooling liquid of the upper annular cooling flow passage to the left and right sides of the lower annular cooling flow passage is arranged in the rear connecting flow passage (7);
the rear side part of the lowest layer annular cooling flow passage is communicated with the flow passage outlet (6), the front side parts of the upper and lower adjacent layers of annular cooling flow passages are communicated through a front connecting flow passage (8) arranged along the height direction of the motor shell (1), and a second flow dividing structure for dividing the cooling liquid of the upper layer annular cooling flow passage to the left and right sides of the lower layer annular cooling flow passage is arranged in the front connecting flow passage (8);
the first and second flow dividing structures are alternately arranged up and down.
3. The motor and decelerator integrated heat dissipation structure as recited in claim 2, wherein: the first flow dividing structure comprises a first flow dividing partition plate (9) vertically fixed between the rear side parts of the upper layer annular cooling flow channel and the lower layer annular cooling flow channel, and the middle part of the first flow dividing partition plate (9) is positioned in the rear connecting flow channel (7).
4. A motor and decelerator integrated heat dissipation structure as recited in claim 3, wherein: the top surface of first reposition of redundant personnel baffle (9) is fixed in the back lateral part top surface of upper annular cooling runner, the bottom surface of first reposition of redundant personnel baffle (9) is fixed in the back lateral part bottom surface of lower floor annular cooling runner, the leading flank of first reposition of redundant personnel baffle (9) is fixed in the inboard surface of upper annular cooling runner, the inboard surface of back connection runner (7) and the inboard surface of lower floor annular cooling runner from top to bottom laminating, the trailing flank of first reposition of redundant personnel baffle (9) is fixed in the outside surface of upper annular cooling runner, the outside surface of back connection runner (7) and the outside surface of lower floor annular cooling runner from top to bottom laminating.
5. The motor and decelerator integrated heat dissipation structure as recited in claim 2, wherein: the second flow dividing structure comprises a second flow dividing partition plate (10) fixed between the front side parts of the upper layer annular cooling flow channel and the lower layer annular cooling flow channel, and the middle part of the second flow dividing partition plate (10) is positioned in the front connecting flow channel (8).
6. The motor and decelerator integrated heat dissipation structure as recited in claim 5, wherein: the top surface of second shunt separator (10) is fixed in the preceding lateral part top surface of upper annular cooling runner, the bottom surface of second shunt separator (10) is fixed in the preceding lateral part bottom surface of lower floor annular cooling runner, the leading flank of second shunt separator (10) is fixed in the outside surface of upper annular cooling runner, the outside surface of preceding connection runner (8) and the outside surface of lower floor annular cooling runner by last laminating down, the trailing flank of second shunt separator (10) is fixed in the inside surface of upper annular cooling runner, the inside surface of preceding connection runner (8) and the inside surface of lower floor annular cooling runner by last laminating down.
7. A heat dissipating structure of an electric motor and decelerator assembly according to claim 1 or 2, wherein: the end face cooling flow channel (4) comprises an inner annular end face cooling flow channel (4.1) which is arranged on the connecting end face of the motor shell (1) and the speed reducer shell (2), and an outer annular end face cooling flow channel (4.2) which is communicated with the water outlet end of the inner annular end face cooling flow channel (4.1) and is arranged on the connecting end face of the motor shell (1) and the speed reducer shell (2);
the bottommost annular cooling flow passage comprises a bottommost front semi-annular cooling flow passage (11) communicated with the water outlet end of the upper layer and the water inlet end of the inner annular end face cooling flow passage (4.1) and a bottommost rear semi-annular cooling flow passage (12) communicated with the water outlet end of the outer annular end face cooling flow passage (4.2) and the flow passage outlet (6).
8. The motor and decelerator integrated heat dissipation structure as recited in claim 7, wherein: the inner annular end face cooling flow passage (4.1) is arranged around a bearing seat (13) shared by the motor and the speed reducer.
9. The motor and decelerator integrated heat dissipation structure as recited in claim 7, wherein: a liquid separation rib plate (14) is arranged between the inner annular end face cooling flow passage (4.1) and the outer annular end face cooling flow passage (4.2).
10. The motor and decelerator integrated heat dissipation structure as recited in claim 9, wherein: turbulence pieces (15) are arranged in the inner annular end face cooling flow passage (4.1) and the outer annular end face cooling flow passage (4.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310779899.0A CN116989128A (en) | 2023-06-29 | 2023-06-29 | Heat radiation structure integrating motor and speed reducer |
Applications Claiming Priority (1)
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| CN202310779899.0A CN116989128A (en) | 2023-06-29 | 2023-06-29 | Heat radiation structure integrating motor and speed reducer |
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