CN112332588A - Motor end cover radiator - Google Patents

Motor end cover radiator Download PDF

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Publication number
CN112332588A
CN112332588A CN202011158064.6A CN202011158064A CN112332588A CN 112332588 A CN112332588 A CN 112332588A CN 202011158064 A CN202011158064 A CN 202011158064A CN 112332588 A CN112332588 A CN 112332588A
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Prior art keywords
heat
heat dissipation
radiator
cover plate
column
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CN202011158064.6A
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Chinese (zh)
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CN112332588B (en
Inventor
阎凯
孙元邦
李峰
刘俊杰
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CRRC Dalian Institute Co Ltd
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CRRC Dalian Institute Co Ltd
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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
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention discloses a motor end cover radiator, which comprises a radiator main body, a heat absorption column, a heat dissipation column and a heat dissipation cover plate, wherein the heat absorption column is arranged on the radiator main body; the heat dissipation cover plate is characterized in that a plurality of heat absorption columns are arranged in an array on one side of the heat radiator body, a plurality of heat dissipation columns are arranged in an array on the other side of the heat radiator body, the heat dissipation cover plate is arranged at one end, far away from the heat radiator body, of each heat dissipation column, and a heat dissipation space is formed between the heat dissipation cover plate and the heat radiator body. The radiator is provided with the radiating cover plate, the radiating cover plate is arranged at one end, far away from the radiator main body, of the radiating column, and a radiating space of a semi-closed air flow channel is formed between the radiating cover plate and the radiator main body, so that the radiator has a chimney effect under a natural cooling condition due to the formation of the radiating space, and under a traveling wind strong cooling condition, the flow speed of air around the radiating column of the radiator is increased due to the Bernoulli principle, so that the forced cooling radiating capacity is increased, and the radiating efficiency of the radiator is improved.

Description

Motor end cover radiator
Technical Field
The invention relates to the technical field of motor heat dissipation, in particular to a motor end cover heat radiator.
Background
The motor is an electromagnetic device for converting electric energy and mechanical energy according to an electromagnetic induction law.
The motor end cover is one of necessary accessories of the motor, and the service life of the motor is directly influenced by the heat dissipation effect of the motor end cover. At present, most motor end covers do not have a heat dissipation function; the existing motor end cover with the heat dissipation function is not reasonable in heat dissipation design and poor in heat dissipation effect.
Disclosure of Invention
The invention provides a motor end cover radiator, which solves the problem that the existing motor end cover is poor in radiating effect.
The technical means adopted by the invention are as follows:
a motor end cover radiator comprises a radiator main body, a heat absorption column, a heat dissipation column and a heat dissipation cover plate;
the heat dissipation cover plate is characterized in that a plurality of heat absorption columns are arranged in an array on one side of the heat radiator body, a plurality of heat dissipation columns are arranged in an array on the other side of the heat radiator body, the heat dissipation cover plate is arranged at one end, far away from the heat radiator body, of each heat dissipation column, and a heat dissipation space is formed between the heat dissipation cover plate and the heat radiator body.
Furthermore, a plurality of bulges are arranged on one surface of the heat dissipation cover plate connected with the heat dissipation column in an array mode.
Further, the protrusion is formed by stamping, and a plurality of pits arranged in an array are formed on the opposite surface of the heat dissipation cover plate connected with the heat dissipation column.
Further, the radiator main body is a fan-shaped annular cylinder.
Further, the heat dissipation column is in a cylindrical array structure or a polygonal array structure.
Further, the heat absorption columns are in a cylindrical array structure or a polygonal array structure.
Further, the material of the motor end cover radiator is aluminum alloy or copper alloy.
Compared with the prior art, the motor end cover radiator has the advantages that the radiator comprises a radiator main body, a heat absorption column, a heat dissipation column and a heat dissipation cover plate; the heat absorption column and the heat dissipation column are arranged on two opposite sides of the radiator main body, the heat dissipation cover plate is arranged at one end, far away from the radiator main body, of the heat dissipation column, and a heat dissipation space of a semi-closed air flow channel is formed between the heat dissipation cover plate and the radiator main body.
Drawings
FIG. 1 is an isometric view of a first embodiment of a motor end cap heat sink disclosed herein;
FIG. 2 is a side view of a first embodiment of the disclosed motor end cap heat sink;
FIG. 3 is a front view of the side provided with the heat absorption column;
FIG. 4 is a front view of the side with the heat-dissipating cover plate;
FIG. 5 is an isometric view of a motor end cap with an end cap heat sink;
FIG. 6 is a front view of a motor end cap with a heat sink cover plate on one side;
FIG. 7 is a front view of the motor end cap on the side where the heat sink posts are located;
FIG. 8 is an isometric view of a motor having a motor end cap heat sink of the present disclosure;
FIG. 9 is a graph of air flow velocity distribution around a heat-dissipating stud of a motor end cap heat sink without a heat-dissipating cover plate under natural convection conditions;
FIG. 10 is a graph of the heat sink temperature distribution around the heat-dissipating studs of a motor end cap heat sink without a heat-dissipating cover plate under natural convection conditions;
FIG. 11 is a graph of air flow velocity distribution around a heat-dissipating stud of a motor end cap heat sink with a heat-dissipating cover plate under natural convection conditions;
FIG. 12 is a graph of the heat sink temperature distribution around the heat-dissipating studs of a motor end cap heat sink with a heat-dissipating cover plate under natural convection conditions;
FIG. 13 is a diagram showing a distribution of air flow velocity and a distribution of heat sink temperature around a heat-dissipating stud of a motor end cap heat sink without a heat-dissipating cover plate under traveling wind conditions;
FIG. 14 is a diagram showing a distribution of air flow velocity and a distribution of heat sink temperature around a heat-dissipating stud of a motor end cap heat sink having a heat-dissipating cover plate under traveling wind conditions;
FIG. 15 is a side view of a second embodiment of the disclosed motor end cap heat sink;
FIG. 16 is an isometric view from the side of the heat sink post of the second embodiment of the motor end cover heat sink disclosed in this invention;
FIG. 17 is an isometric view from the side of a heat sink cover plate of a second embodiment of the disclosed motor end cap heat sink;
FIG. 18 is a graph of air flow velocity distribution around a heat-dissipating stud of a motor end cap heat sink having a raised heat-dissipating cover plate under natural convection conditions;
FIG. 19 is a graph of the heat sink temperature distribution around the heat-dissipating studs of a motor end cap heat sink with raised heat-dissipating cover plates under natural convection conditions;
fig. 20 is a diagram showing a distribution of air flow velocity and a distribution of heat sink temperature around a heat-dissipating stud of a motor end cover heat sink having a raised heat-dissipating cover plate under running wind conditions.
In the figure: 1. the radiator comprises a radiator main body, 2 heat absorption columns, 3 heat dissipation columns, 4 heat dissipation cover plates, 5 heat dissipation spaces, 6 protrusions, 7 motor end covers, 8 motors, 9 protrusions, 10 pits.
Detailed Description
Example 1
Fig. 1 to 7 show a first embodiment of a motor end cover heat sink disclosed in the present invention, which includes a heat sink main body 1, a heat absorption column 2, a heat dissipation column 3, and a heat dissipation cover plate 4;
the radiator comprises a radiator body 1, a plurality of heat absorption columns 1 are arranged in an array on one side of the radiator body 1, a plurality of heat dissipation columns 3 are arranged in an array on the other side of the radiator body 1, heat dissipation cover plates 4 are arranged at one ends, far away from the radiator body 1, of the heat dissipation columns 3, and heat dissipation spaces 5 are formed between the heat dissipation cover plates 4 and the radiator body 1.
As shown in fig. 8, a motor 8 with a motor end cover radiator disclosed by the invention is provided, two ends of the motor 8 are provided with motor end covers 7, the motor end cover 7 is provided with a plurality of end cover radiators, the end cover radiators are uniformly arranged on the motor end cover, the motor end cover is provided with end cover radiator mounting holes, mounting grooves are formed around the end cover radiator mounting holes, and a radiator main body 1 is fixed in the mounting grooves through bolts, so that a heat absorption column 2 penetrates through the end cover radiator mounting holes and is arranged in the motor 8 for absorbing heat generated during the operation of the motor, and the absorbed heat is transferred to the radiator main body 1, and the radiator main body 1 transfers the heat to a heat dissipation column 3 for dissipating the absorbed heat into air, thereby cooling the motor. In the motor end cover radiator disclosed by the invention, the radiating cover plate 4 is arranged at one end of the radiating column 3, which is far away from the radiator main body 1, a semi-closed air flow channel is formed between the radiating cover plate 4 and the radiator main body 1, and the semi-closed air flow channel can realize that the air around the radiating column is heated by utilizing the chimney effect under the natural cooling condition, and the air around the radiating column flows upwards under the action of buoyancy to form the suction effect on the air with lower temperature below the radiator, so that the air flowing speed around the radiating column is increased, and the natural cooling radiating capacity of the radiator is increased; under the condition of strong cooling of running wind, the radiating cover plate is added, so that a semi-enclosed space is formed between the radiating cover plate and the radiator main body, air flowing around the radiating column is gathered, the flowing speed of the air around the radiating column of the radiator is increased, and the Bernoulli effect is formed.
The following is a simulation of the heat dissipation characteristics of heat sinks with different structures under certain conditions to illustrate the heat dissipation effect of the heat sink of the present invention.
Fig. 9 shows a distribution diagram of air flow velocity around the heat dissipation posts of the motor end cover heat sink without the heat dissipation cover plate under natural convection conditions. As can be seen from FIG. 9, the maximum flow velocity of air between the heat-dissipating studs is 0.095 m/s.
Fig. 10 shows the temperature distribution of the heat sink around the heat-dissipating studs of the motor end cap heat sink without the heat-dissipating cover plate under natural convection conditions. As can be seen from fig. 10, the maximum temperature of the heat sink is 109 ℃.
Fig. 11 shows a distribution diagram of air flow velocity around the heat-dissipating studs of the motor end cover heat sink with the heat-dissipating cover plate under natural convection conditions. As can be seen from FIG. 11, the maximum flow velocity of the air around the heat-dissipating stud is 0.099 m/s.
Fig. 12 shows the temperature distribution of the heat sink around the heat-dissipating studs of the motor end cap heat sink with the heat-dissipating cover plate under natural convection conditions. As can be seen from fig. 12, the maximum temperature of the heat sink is 98.5 ℃.
As can be seen from comparison between fig. 9 and fig. 12, compared with the motor end cover radiator without the heat dissipation cover plate, the motor end cover radiator with the heat dissipation cover plate has the advantages that under the condition of natural convection, the air velocity around the heat dissipation column of the radiator with the heat dissipation cover plate is higher, and the highest temperature of the radiator is lower, which indicates that the heat dissipation cover plate is provided, thereby facilitating heat dissipation.
Fig. 13 is a distribution diagram of air flow velocity and a temperature distribution of a radiator around a heat dissipation column of a motor end cover radiator without a heat dissipation cover plate under a running wind condition. As can be seen in FIG. 13, the air flow velocity in the middle of the array heat-dissipating stud is 1.18 m/s; the maximum temperature of the heat sink was 108.3 ℃.
Fig. 14 shows a distribution diagram of air flow velocity and a distribution of heat sink temperature around a heat-dissipating stud of a motor end cover heat sink with a heat-dissipating cover plate under traveling wind conditions. As can be seen in FIG. 14, the air flow velocity in the middle of the array heat-dissipating stud is 2.78 m/s; the maximum temperature of the heat sink was 94.77 ℃.
As can be seen from comparison between fig. 13 and fig. 14, compared with the motor end cover radiator without the heat dissipation cover plate, the motor end cover radiator with the heat dissipation cover plate has the advantages that the heat dissipation cover plate is added to facilitate the traveling wind to flow between the heat dissipation cover plate and the radiator main body under the traveling wind condition of the vehicle, the peripheral air speed of the heat dissipation column of the radiator with the heat dissipation cover plate is higher, the highest temperature of the radiator is lower, and the heat dissipation cover plate is provided to facilitate heat dissipation.
The motor end cover radiator disclosed by the invention can perform good heat dissipation on the motor end cover and the inside of the motor no matter under the conditions of natural cooling or forced air cooling by traveling wind.
Further, the heat sink body 1 is a fan-shaped annular cylinder. The fan-shaped annular cylinder has a symmetrical structure, and is beneficial to arranging a plurality of radiators in the circumferential direction of the motor end cover.
Further, the heat dissipation column 3 is in a cylindrical array structure or a polygonal array structure, which can increase the heat dissipation area of the heat dissipation column and improve the heat dissipation efficiency, and preferably, the heat dissipation column 3 is in a cylindrical array structure, so that the heat sink can have a good ventilation effect no matter what angle position of the motor end cover the heat sink is installed at.
Further, the heat absorption columns 2 are of a cylindrical array structure or a polygonal array structure, so that the heat absorption area of the heat absorption columns can be increased, and heat in the motor can be transferred to the radiator main body to be radiated.
Furthermore, the material of the motor end cover radiator is aluminum alloy or copper alloy, so that the heat radiation performance of the radiator can be further improved.
Example 2
Fig. 15, fig. 16 and fig. 17 show a second embodiment of the motor end cover heat sink disclosed in the present invention, which is different from embodiment 1, in this embodiment, the heat dissipation cover plate in embodiment 1 is a flat plate structure, and in this embodiment, a plurality of protrusions 9 are arrayed on one surface of the heat dissipation cover plate 4 connected to the heat dissipation column 3, in this embodiment, since the protrusion 9 is disposed on one surface of the heat dissipation cover plate facing the heat dissipation column, an air flow boundary layer of the heat dissipation cover plate can be damaged, a turbulent degree of air flow between the heat dissipation cover plate and the heat sink main body can be increased, which is beneficial to thinning a temperature boundary layer of the temperature heat dissipation cover plate and strengthening a convective heat exchange degree between air and the heat dissipation.
Fig. 18 shows the distribution of air flow velocity around the heat-dissipating studs of the motor end cover heat sink with raised heat-dissipating cover plate under natural convection conditions. As can be seen in FIG. 18, the highest flow velocity of the air around the heat-dissipating stud is 0.0992 m/s. Comparing with fig. 11, it is found that the addition of the convex structure to the radiator shroud contributes to an increase in the maximum flow velocity of air around the heat-radiating stud.
Fig. 19 shows the heat sink temperature distribution around the heat-dissipating studs of a motor end cap heat sink with raised heat-dissipating cover plates under natural convection conditions. As can be seen from fig. 19, the maximum temperature of the heat sink is 98.2 ℃. Comparing with fig. 12, it is found that the addition of the convex structure to the radiator cover plate is advantageous for reducing the maximum temperature of the radiator.
Table 1 shows the maximum temperatures of the three radiators under natural convection, and it can be analyzed that the maximum temperature of the radiator with the raised heat-dissipating cover plate is reduced by 9.9% compared with the radiator without the heat-dissipating cover plate; the highest temperature of the radiator with the flat radiating cover plate is reduced by 9.6 percent. The increase of the heat dissipation cover plate enables the maximum temperature of the radiator to be reduced by about 10%, and the heat dissipation cover plate plays an important role in cooling the motor.
TABLE 1 maximum temperature of three radiators under natural convection conditions
Figure BDA0002743383650000051
Figure BDA0002743383650000061
Fig. 20 shows the distribution diagram of the air flow velocity and the radiator temperature around the heat-dissipating column of the motor end cover radiator having the heat-dissipating cover plate with the protrusions 9 under the traveling wind condition. As can be seen in FIG. 20, the air flow velocity in the middle of the array heat-dissipating stud is 5.98 m/s; the maximum temperature of the heat sink was 94.12 ℃.
Table 2 shows the maximum temperatures of the three radiators under traveling wind conditions, and it can be analyzed that the maximum temperature of the radiator with the raised heat dissipation cover plate is reduced by 13.3% compared with the radiator without the heat dissipation cover plate; the highest temperature of the radiator with the flat radiating cover plate is reduced by 12.7 percent. The increase of the heat dissipation cover plate enables the maximum temperature of the radiator to be reduced by about 13%, and the heat dissipation cover plate plays an important role in cooling the motor.
TABLE 2 maximum temperature of three radiators under traveling wind conditions
Figure BDA0002743383650000062
Furthermore, the protrusion 9 is formed by stamping, a plurality of pits 10 arranged in an array are formed on the opposite surface of the heat dissipation cover plate connected with the heat dissipation column, and the protrusion 9 is formed by stamping and the pits 10 are formed on the back surface provided with the protrusion, so that the heat dissipation area of the heat dissipation cover plate is increased, and the heat dissipation efficiency is further improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (7)

1. The utility model provides a motor end cover radiator which characterized in that: the heat dissipation device comprises a heat radiator main body, a heat absorption column, a heat dissipation column and a heat dissipation cover plate;
the heat dissipation cover plate is characterized in that a plurality of heat absorption columns are arranged in an array on one side of the heat radiator body, a plurality of heat dissipation columns are arranged in an array on the other side of the heat radiator body, the heat dissipation cover plate is arranged at one end, far away from the heat radiator body, of each heat dissipation column, and a heat dissipation space is formed between the heat dissipation cover plate and the heat radiator body.
2. The motor end cap heat sink of claim 1, wherein: the radiating cover plate and the radiating column are connected, and a plurality of bulges are arranged on one surface of the radiating cover plate connected with the radiating column in an array mode.
3. The motor end cap heat sink of claim 2, wherein: the heat dissipation cover plate is connected with the heat dissipation column, and a plurality of pits are formed in an array mode on the opposite face, connected with the heat dissipation column, of the heat dissipation cover plate.
4. A motor end cap heat sink according to any one of claims 1 to 3, wherein: the radiator main body is a fan-shaped annular cylinder.
5. The motor end cap heat sink of claim 4, wherein: the heat dissipation column is in a cylindrical array structure or a polygonal array structure.
6. The motor end cap heat sink of claim 4, wherein: the heat absorption columns are in a cylindrical array structure or a multi-prism array structure.
7. The motor end cap heat sink of claim 1, wherein: the motor end cover radiator is made of aluminum alloy or copper alloy.
CN202011158064.6A 2020-10-26 2020-10-26 Motor end cover radiator Active CN112332588B (en)

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CN202011158064.6A CN112332588B (en) 2020-10-26 2020-10-26 Motor end cover radiator

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CN112332588B CN112332588B (en) 2022-12-27

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030071525A1 (en) * 2000-12-20 2003-04-17 General Electric Company Heat transfer enhancement at generator stator core space blocks
JP2007124796A (en) * 2005-10-27 2007-05-17 Toshiba Corp Totally enclosed type motor for driving vehicle
CN101359076A (en) * 2007-07-31 2009-02-04 鸿富锦精密工业（深圳）有限公司 Color wheel
US20090151900A1 (en) * 2007-12-12 2009-06-18 Tsung-Hsien Huang Heat sink
CN102348366A (en) * 2010-07-25 2012-02-08 东莞市为开金属制品厂 Radiator
CN104075601A (en) * 2014-07-23 2014-10-01 中国北车集团大连机车研究所有限公司 Groove type heat pipe radiator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030071525A1 (en) * 2000-12-20 2003-04-17 General Electric Company Heat transfer enhancement at generator stator core space blocks
JP2007124796A (en) * 2005-10-27 2007-05-17 Toshiba Corp Totally enclosed type motor for driving vehicle
CN101359076A (en) * 2007-07-31 2009-02-04 鸿富锦精密工业（深圳）有限公司 Color wheel
US20090151900A1 (en) * 2007-12-12 2009-06-18 Tsung-Hsien Huang Heat sink
CN102348366A (en) * 2010-07-25 2012-02-08 东莞市为开金属制品厂 Radiator
CN104075601A (en) * 2014-07-23 2014-10-01 中国北车集团大连机车研究所有限公司 Groove type heat pipe radiator

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