CN217362760U - Strong air cooling structure of broadband variable frequency motor - Google Patents
Strong air cooling structure of broadband variable frequency motor Download PDFInfo
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- CN217362760U CN217362760U CN202122758489.7U CN202122758489U CN217362760U CN 217362760 U CN217362760 U CN 217362760U CN 202122758489 U CN202122758489 U CN 202122758489U CN 217362760 U CN217362760 U CN 217362760U
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- 238000001816 cooling Methods 0.000 title claims abstract description 53
- 239000007787 solid Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The invention discloses a strong air cooling structure of a broadband variable frequency motor, which solves the problem of how to meet the heat dissipation requirement of a high-power wide-frequency variable frequency motor and greatly reduce the occupied space of the whole equipment. A double-air-path cooling structure is adopted in the motor, the traditional form that an air-air heat exchange cooler is arranged at the top end of the motor is changed, the air-air heat exchange cooler is omitted, and a centrifugal fan on a rotating shaft of the motor is omitted; the method comprises the following steps that a front air inlet is arranged at the driving end and the non-driving end of the front side of a motor shell respectively, a rear air inlet is arranged at the driving end and the non-driving end of the rear side of the motor shell respectively, an air outlet is arranged in the middle of the rear side of the motor shell, a cooling fan is connected to the air outlet, and a double-loop strong air cooling air path is formed in the motor through the cooling fan; thereby realizing the strong air cooling of the motor and saving the occupied space of the whole device.
Description
Technical Field
The invention relates to a variable frequency motor, in particular to a strong air cooling structure of a broadband variable frequency motor.
Background
In a large laboratory, a variable frequency motor with a wide frequency modulation range is generally configured, the motor needs to be frequently operated at a speed of 0-50Hz, the power density of the variable frequency motor is high, and the heat of the motor is very serious in the operation process; the ventilation cooling structure of this type of motor that has now generally adopts two wind path cooling structure, and concrete structure is: the top of the AS end and the BS end of the motor shell are respectively provided with an air inlet, the middle of the top end of the motor shell is provided with an air outlet, two ends of a motor rotating shaft in the motor shell are respectively provided with a centrifugal fan, a cooler fan cover with a larger volume is arranged above the top end of the motor shell, an axial air cooling pipe is distributed in the cooler fan cover, and the outer side of the cooler BS is provided with a cooling fan communicated with the air cooling pipe; when the motor runs, cold air in the cooler cover is sucked into the motor shell through the air inlets at the tops of the AS end and the BS end by means of the centrifugal fans at the two ends of the rotating shaft of the motor, the cold air sequentially passes through the axial air duct on the motor rotor and the radial air duct on the stator to cool the motor, heated air finally returns into the cooler cover through the air outlet, hot air in the cooler cover and the cold air in the air cooling pipe perform air-air heat exchange, and the air after heat exchange and cooling enters the motor through the air inlets at the tops of the AS end and the BS end again to form a circulating air cooling system; the volume of the cooler shell of the cooling structure is basically close to that of the motor shell, so that the variable frequency motor and the cooler need to occupy larger installation space, but when the laboratory space is limited, the structure motor can meet the problem that the installation space cannot meet the requirement; particularly, when the variable frequency motor runs for a long time under the condition of very low frequency, the defect that the circulating air cooling system cannot meet the heat exchange requirement still exists, and aiming at the condition, the existing design is that a strong cooling fan is additionally arranged at the top of a cooler cover so as to accelerate the flowing speed of circulating cooling air in the motor and the cooling cover and meet the heat exchange requirement, but the requirement of equipment installation space is further increased due to the additional arrangement of the strong cooling fan; how to satisfy the heat dissipation requirement of the wide frequency conversion motor of high power to reduce the occupation space of whole equipment by a wide margin, become a problem that the scene needs to be solved.
Disclosure of Invention
The invention provides a strong air cooling structure of a broadband variable frequency motor, which solves the technical problems of meeting the heat dissipation requirement of a high-power wide-frequency variable frequency motor and greatly reducing the occupied space of the whole equipment.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: a double-air-path cooling structure is adopted in the motor, the traditional form that an air-air heat exchange cooler is arranged at the top end of the motor is changed, the air-air heat exchange cooler is omitted, and a centrifugal fan on a rotating shaft of the motor is omitted; the driving end and the non-driving end on the front side of the motor shell are respectively provided with a front air inlet, the driving end and the non-driving end on the rear side of the motor shell are respectively provided with a rear air inlet, the middle part on the rear side of the motor shell is provided with an air outlet, the air outlet is connected with a cooling fan, and a double-loop strong air cooling air path is formed in the motor through the cooling fan; thereby realizing the strong air cooling of the motor and saving the occupied space of the whole device.
A strong air cooling structure of a broadband variable frequency motor comprises a motor base and a cooling fan, wherein a front side air inlet of a driving end is arranged on the front side surface of a shell on one side of the driving end of the motor base; the middle part of the rear side face of the shell of the motor base is provided with an air outlet, the air outlet is connected with a cooling fan, a spoke type rotor support is arranged on a motor rotating shaft, a middle baffle plate is arranged in the middle part of the motor rotating shaft, and cooling air entering a driving end cover chamber through a driving end front side air inlet and a driving end rear side air inlet sequentially passes through a motor rotor left side axial air path on the left side of the middle baffle plate, a motor stator left side radial air path and the air outlet and is discharged to the outside of the motor after entering the cooling fan; the cooling air entering the non-drive end cover chamber through the non-drive end front air inlet and the non-drive end rear air inlet sequentially passes through the motor rotor right axial air path on the right side of the middle baffle, the motor stator right radial air path and the air outlet, enters the cooling fan and is discharged to the outside of the motor.
Shutters are arranged on the air inlet at the front side of the driving end, the air inlet at the front side of the non-driving end, the air inlet at the rear side of the driving end and the air inlet at the rear side of the non-driving end, and stainless steel wire woven meshes capable of preventing solids with the diameter of 1 mm from penetrating are arranged in the shutters.
The invention has the advantages of simple structure, low cost, good ventilation effect, low protection level and small volume, and can completely meet the requirement of indoor working environment of the motor.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention;
fig. 3 is a schematic view of the structure of fig. 2 in a left-hand direction.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
a strong air cooling structure of a broadband variable frequency motor comprises a motor base 1 and a cooling fan 2, wherein a driving end front side air inlet 3 is arranged on the front side surface of a shell on one side of a driving end of the motor base 1, a non-driving end front side air inlet 4 is arranged on the front side surface of the shell on one side of a non-driving end of the motor base 1, a driving end rear side air inlet 5 is arranged on the rear side surface of the shell on one side of the driving end of the motor base 1, and a non-driving end rear side air inlet 6 is arranged on the rear side surface of the shell on one side of the non-driving end of the motor base 1; an air outlet 7 is arranged in the middle of the rear side face of a shell of a motor base 1, a cooling fan 2 is connected to the air outlet 7, a spoke type rotor support is arranged on a motor rotating shaft, a middle baffle plate 10 is arranged in the middle of the motor rotating shaft, and cooling air entering a drive end cover chamber 8 through a drive end front side air inlet 3 and a drive end rear side air inlet 5 sequentially passes through a motor rotor left side axial air path 11 on the left side of the middle baffle plate 10, a motor stator left side radial air path 12 and the air outlet 7, enters the cooling fan 2 and is discharged outside a motor; the cooling air entering the non-drive end cover chamber 9 through the non-drive end front air inlet 4 and the non-drive end rear air inlet 6 passes through the motor rotor right axial air passage 13, the motor stator right radial air passage 14 and the air outlet 7 on the right side of the middle baffle plate 10 in sequence, enters the cooling fan 2 and is discharged to the outside of the motor.
Shutters are arranged on the driving end front side air inlet 3, the non-driving end front side air inlet 4, the driving end rear side air inlet 5 and the non-driving end rear side air inlet 6, and stainless steel wire mesh knits capable of preventing solids with the diameter of 1 mm from penetrating through are arranged in the shutters; the motor body is of an axial and radial mixed ventilation structure, the cooling fan cover is of a forced ventilation structure with an exhaust fan, blades of a shutter arranged at an air inlet form an inclined angle of 60 degrees with the vertical direction, and an air outlet is of a forced fan with the exhaust fan and is of a strong air cooling structure with a protection grade IP 23.
Claims (2)
1. A strong air cooling structure of a broadband variable frequency motor comprises a motor base (1) and a cooling fan (2), and is characterized in that a driving end front side air inlet (3) is arranged on the front side surface of a shell on one side of a driving end of the motor base (1), a non-driving end front side air inlet (4) is arranged on the front side surface of the shell on one side of a non-driving end of the motor base (1), a driving end rear side air inlet (5) is arranged on the rear side surface of the shell on one side of the driving end of the motor base (1), and a non-driving end rear side air inlet (6) is arranged on the rear side surface of the shell on one side of the non-driving end of the motor base (1); an air outlet (7) is formed in the middle of the rear side face of a shell of a motor base (1), a cooling fan (2) is connected to the air outlet (7), a spoke type rotor support is arranged on a motor rotating shaft, a middle baffle plate (10) is arranged in the middle of the motor rotating shaft, and cooling air entering a driving end cover chamber (8) through a driving end front side air inlet (3) and a driving end rear side air inlet (5) sequentially passes through a motor rotor left side axial air path (11), a motor stator left side radial air path (12) and the air outlet (7) on the left side of the middle baffle plate (10), enters the cooling fan (2) and is discharged out of a motor; the cooling air entering the non-drive end cover chamber (9) through the non-drive end front side air inlet (4) and the non-drive end rear side air inlet (6) sequentially passes through the motor rotor right side axial air path (13), the motor stator right side radial air path (14) and the air outlet (7) on the right side of the middle baffle plate (10) and enters the cooling fan (2) and is discharged to the outside of the motor.
2. A strong air cooling structure of a broadband variable frequency motor according to claim 1, wherein shutters are arranged on the air inlet (3) at the front side of the driving end, the air inlet (4) at the front side of the non-driving end, the air inlet (5) at the rear side of the driving end and the air inlet (6) at the rear side of the non-driving end, and stainless steel wire mesh grids capable of preventing solids with the diameter of 1 mm from passing through are arranged in the shutters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122758489.7U CN217362760U (en) | 2021-11-11 | 2021-11-11 | Strong air cooling structure of broadband variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122758489.7U CN217362760U (en) | 2021-11-11 | 2021-11-11 | Strong air cooling structure of broadband variable frequency motor |
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| Publication Number | Publication Date |
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| CN217362760U true CN217362760U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122758489.7U Active CN217362760U (en) | 2021-11-11 | 2021-11-11 | Strong air cooling structure of broadband variable frequency motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069940A (en) * | 2021-11-11 | 2022-02-18 | 中船重工电机科技股份有限公司 | A strong air cooling structure of a wide frequency variable frequency motor |
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2021
- 2021-11-11 CN CN202122758489.7U patent/CN217362760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069940A (en) * | 2021-11-11 | 2022-02-18 | 中船重工电机科技股份有限公司 | A strong air cooling structure of a wide frequency variable frequency motor |
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