CN104901468A - Internally air-cooled variable-frequency motor - Google Patents
Internally air-cooled variable-frequency motor Download PDFInfo
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- CN104901468A CN104901468A CN201410077713.8A CN201410077713A CN104901468A CN 104901468 A CN104901468 A CN 104901468A CN 201410077713 A CN201410077713 A CN 201410077713A CN 104901468 A CN104901468 A CN 104901468A
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- fan
- frequency motor
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- motor
- machine casing
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Abstract
The invention discloses an internally air-cooled variable-frequency motor comprising a motor housing (1) and a plurality of heat-dissipating pipes. A motor stator (3) and a motor rotor (10) are installed inside the motor housing (1). The outer wall of the motor housing (1) is provided with a plurality of heat-dissipating fins (8). A front end cover (9) is installed on the front end of the motor housing (1). Both ends of each heat-dissipating pipe are communicated with internal space of the motor housing (1). A heat-dissipating device (4) is installed inside the motor housing (1) and comprises a baffle plate (42) equipped with a plurality of micro blower fans (41). The baffle plate (42) is installed on the main shaft of a micro motor (43). The internally air-cooled variable-frequency motor has a better internal cooling effect and a prolonged service life, and operates more stably.
Description
Technical field:
The present invention relates to variable-frequency motor technical field, more specifically to the internally air-cooled formula variable-frequency motor of one.
Background technology:
Variable-frequency motor has the features such as energy-conservation and stepless time adjustment, and be widely used in the industries such as coal, oil, chemical industry, generating, metallurgy, machine-building, for dragging the equipment such as Transport Machinery, blower fan, water pump, disintegrating machine, variable-frequency motor rotating speed can adjust as required.
Variable-frequency motor provides frequency change and the adjustable power of voltage magnitude by variable frequency power supply to motor, controls motor speed, reach motor drag the operating mode that load needs, avoid the unwanted energy of electrical consumption, make the object that motor reaches energy-conservation.When variable-frequency motor runs, can produce loss, loss produces caloric requirement and takes away by the air quantity of the inside and outside fan generation of variable-frequency motor.Due to variable-frequency motor, rotating speed is lower sometimes, and inside and outside fan can not produce blast by High Rotation Speed, forms air quantity, dispels the heat to variable-frequency motor.So, produce variable-frequency motor producer, external fan changed into pressure cooling blower.Because the degree of protection of variable-frequency motor has requirement, variable-frequency motor internal fan can not directly with forcing cooling blower, therefore, in variable-frequency motor, wind path is when variable-frequency motor low cruise, cooling effect is poor, for making the variable-frequency motor slow-speed of revolution reliable, the volume that variable-frequency motor designs by motor producer is larger.
Variable-frequency motor is when the frequency control slow-speed of revolution, and on rotor, internal fan rotating speed is lower, can not form blast and air quantity, cooling motor rotor, reduces variable-frequency motor temperature rise.If strengthen the method for cooling blower according to outer ventilation circuit, solve wind path circulation temperature lowering problem in variable-frequency motor more difficult.The first, variable frequency motor base is more complicated, and strong air-cooler installs difficulty, installs the degree of protection that can not ensure variable-frequency motor inside reluctantly; The second, existing strong air-cooler volume is comparatively large, cannot install.
In addition, in use, frequency converter produces high order harmonic component to variable-frequency motor, and rotor produces induced potential, by two ends of rotor bearing, forms shaft current, and shaft current can produce galvanic corrosion to motor bearings oil film, causes motor bearings premature breakdown.As motor bearings is changed not in time, can cause motor holding shaft or burn, running reliability of motor is poor, and motor operating cost is high.In addition, produce the manufacturing firm of variable-frequency motor, all notice and also take some measures the impact that shaft current is run motor, as used insulation bearing, grounding carbon brush etc., main existing problems are that cost is high, and versatility is not strong, the not high defect of reliability.
Summary of the invention:
Object of the present invention is just to provide a kind of internally air-cooled formula variable-frequency motor, its internal cooling better effects if, and useful life more lengthens, and work of the present invention is also more stable.
For achieving the above object, the internally air-cooled formula variable-frequency motor of one of the present invention comprises electric machine casing, the inside of described electric machine casing is provided with motor stator and rotor, the outer wall of described electric machine casing has the hot fin of some fans, the front end of described electric machine casing is provided with front end housing, it also comprises some fan heat pipes, the described two ends of fan heat pipe are communicated with the inner space of electric machine casing, the inside of described electric machine casing is provided with fan thermal, the structure of described fan thermal comprises a baffle plate, described baffle plate is provided with some mini fans, described baffle plate is arranged on the main shaft of electrical micro-machine, the structure of described front end housing comprises inner cap, enclosing cover and end cap, described inner cap, enclosing cover and end cap are fixed together, described front end housing also comprises bearing, described bearing is placed in insulating case and is arranged on inner cap, between enclosing cover, left side and the right side of described bearing are provided with insulating barrier respectively and between inner cap and enclosing cover.
Preferred as technique scheme, the shape of described baffle plate is discoid, described baffle plate is provided with six mini fans, and described six mini fan circular array are distributed on baffle plate.
Preferred as technique scheme, described fan thermal is arranged on the inside of electric machine casing and is positioned at outlet or the porch of fan heat pipe.
Preferred as technique scheme, the rear portion of described electric machine casing is provided with rear end cap, and described rear end cap has baffler, baffler offers some pod apertures, and described rear end cap inside is provided with fan Hot-air fan.
Preferred as technique scheme, described motor stator is provided with speed probe, described speed probe and one controls mainboard and is electrically connected, described control mainboard has the measurement of rotating speed module receiving rotation speed sensor information, described control mainboard also has and controls the mini fan control module of mini fan rotating speed and the electrical micro-machine control module of control micro electric machine rotating speed.
Preferred as technique scheme, described mini fan is axial flow blower.
Preferred as technique scheme, be provided with insulating barrier between described end cap and insulating case, described insulating barrier is DMC insulating barrier.
Preferred as technique scheme, together with described inner cap, enclosing cover are bolted on end cap.
Preferred as technique scheme, described end cap forms reinforcement.
Beneficial effect of the present invention is: the present invention is formed by fan heat pipe and electric machine casing inside and fans hot air circulate loop, and in the inside of electric machine casing, fan thermal is installed, form internal air circulation by fan thermal and carry out fan heat, which overcome following two technical difficulties: first, variable frequency motor base is more complicated, strong air-cooler installs difficulty, installs the degree of protection that can not ensure variable-frequency motor inside reluctantly; The second, existing strong air-cooler volume is comparatively large, and cannot install, therefore the present invention has the better feature of cooling effect, and work is more stable, and useful life also more lengthens.
In addition; the present invention has insulating barrier; by the buffer action of insulating case; the induced potential that motor is produced can not form loop; produce shaft current, reach the object of protection motor bearings, therefore the present invention can make the operation of motor more stable; it also can extend the useful life of bearing simultaneously, reduces production cost.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the structural representation of the embodiment of the present invention
Fig. 2 is the structural representation of embodiment of the present invention middle fan thermal
Fig. 3 is the left view of Fig. 2
Fig. 4 is the block diagram of the embodiment of the present invention
Fig. 5 is the structural representation of front end housing in the embodiment of the present invention
In figure: 1, electric machine casing; 2, heat pipe is fanned; 3, motor stator; 4, thermal is fanned; 5, baffler; 6, Hot-air fan is fanned; 7, rear end cap; 8, hot fin is fanned; 9, front end housing; 10, rotor; 41, mini fan; 42, baffle plate; 43, electrical micro-machine; 91, end cap; 92, inner cap; 93, bolt; 94, insulating case; 95, insulating barrier; 96, bearing; 97, enclosing cover; 911, reinforcement
Embodiment:
The following stated is only the preferred embodiment embodying the principle of the invention, does not therefore limit protection scope of the present invention
As Fig. 1 to 5 is depicted as the embodiment of a kind of internally air-cooled formula variable-frequency motor of the present invention, it comprises electric machine casing 1, the inside of described electric machine casing 1 is provided with motor stator 3 and rotor 10, the outer wall of described electric machine casing 1 has the hot fin 8 of some fans, the front end of described electric machine casing 1 is provided with front end housing 9, it also comprises some fan heat pipes 2, the two ends of described fan heat pipe 2 are communicated with the inner space of electric machine casing 1, the inside of described electric machine casing 1 is provided with fan thermal 4, the structure of described fan thermal 4 comprises a baffle plate 42, described baffle plate 42 is provided with some mini fans 41, described baffle plate 42 is arranged on the main shaft of electrical micro-machine 43, the structure of described front end housing 9 comprises inner cap 92, enclosing cover 97 and end cap 91, described inner cap 92, enclosing cover 97 and end cap 91 are fixed together, described front end housing 9 also comprises bearing 96, described bearing 96 is placed in insulating case 94 and is arranged on inner cap 92, between enclosing cover 97, left side and the right side of described bearing 96 are provided with insulating barrier 95 respectively and between inner cap 92 and enclosing cover 97.
The shape of baffle plate 42 is discoid, described baffle plate 42 is provided with six mini fans 41, and described six mini fan 41 circular array are distributed on baffle plate 42.
Fan thermal 4 is arranged on the inside of electric machine casing 1 and is positioned at the outlet or porch of fanning heat pipe 2.
The rear portion of electric machine casing 1 is provided with rear end cap 7, described rear end cap 7 has baffler 5, baffler 5 offers some pod apertures, and described rear end cap 7 inside is provided with fan Hot-air fan 6.
Motor stator 3 is provided with speed probe, described speed probe and one controls mainboard and is electrically connected, described control mainboard has the measurement of rotating speed module receiving rotation speed sensor information, described control mainboard also has and controls the mini fan control module of mini fan 41 rotating speed and the electrical micro-machine control module of control micro electric machine rotating speed.
Mini fan 41 is axial flow blower.
Be provided with insulating barrier 95 between end cap 91 and insulating case 94, described insulating barrier 95 is DMC insulating barrier.
Inner cap 92, enclosing cover 97 and end cap 91 are fixed together by bolt 93.
End cap 91 forms reinforcement 911.
The present invention is formed by fan heat pipe and electric machine casing inside and fans hot air circulate loop, and in the inside of electric machine casing, fan thermal is installed, form internal air circulation by fan thermal and carry out fan heat, which overcome following two technical difficulties: first, variable frequency motor base is more complicated, strong air-cooler installs difficulty, installs the degree of protection that can not ensure variable-frequency motor inside reluctantly; The second, existing strong air-cooler volume is comparatively large, and cannot install, therefore the present invention has the better feature of cooling effect, and work is more stable, and useful life also more lengthens.
The present invention is also had to have insulating barrier 95; by the buffer action of insulating case 94 and insulating barrier 95; the induced potential that motor is produced can not form loop; produce shaft current; reach the object of protection motor bearings; therefore the present invention can make the operation of motor more stable, and it also can extend the useful life of bearing simultaneously, reduces production cost.
Claims (9)
1. an internally air-cooled formula variable-frequency motor, it comprises electric machine casing (1), the inside of described electric machine casing (1) is provided with motor stator (3) and rotor (10), the outer wall of described electric machine casing (1) has the hot fin of some fans (8), the front end of described electric machine casing (1) is provided with front end housing (9), it is characterized in that: it also comprises some fan heat pipes (2), the two ends of described fan heat pipe (2) are communicated with the inner space of electric machine casing (1), the inside of described electric machine casing (1) is provided with fan thermal (4), the structure of described fan thermal (4) comprises a baffle plate (42), described baffle plate (42) is provided with some mini fans (41), described baffle plate (42) is arranged on the main shaft of electrical micro-machine (43), the structure of described front end housing (9) comprises inner cap (92), enclosing cover (97) and end cap (91), described inner cap (92), enclosing cover (97) and end cap (91) are fixed together, described front end housing (9) also comprises bearing (96), described bearing (96) is placed in insulating case (94) and is arranged on inner cap (92), between enclosing cover (97), the left side of described bearing (96) and right side are provided with insulating barrier (95) respectively and between inner cap (92) and enclosing cover (97).
2. the internally air-cooled formula variable-frequency motor of one according to claim 1, it is characterized in that: the shape of baffle plate (42) is discoid, described baffle plate (42) is provided with six mini fans (41), described six mini fan (41) circular array are distributed on baffle plate (42).
3. the internally air-cooled formula variable-frequency motor of one according to claim 2, is characterized in that: fan thermal (4) is arranged on the inside of electric machine casing (1) and is positioned at the outlet or porch of fanning heat pipe (2).
4. the internally air-cooled formula variable-frequency motor of one according to claim 3, it is characterized in that: the rear portion of electric machine casing (1) is provided with rear end cap (7), described rear end cap (7) has baffler (5), (5) offer some pod apertures to baffler, and described rear end cap (7) inside is provided with fan Hot-air fan (6).
5. the internally air-cooled formula variable-frequency motor of one according to claim 1, it is characterized in that: (3) are provided with speed probe to motor stator, described speed probe and one controls mainboard and is electrically connected, described control mainboard has the measurement of rotating speed module receiving rotation speed sensor information, described control mainboard also has the mini fan control module of control mini fan (41) rotating speed and the electrical micro-machine control module of control micro electric machine rotating speed.
6. the internally air-cooled formula variable-frequency motor of one according to any one of claim 1 to 6, is characterized in that: mini fan (41) is axial flow blower.
7. the internally air-cooled formula variable-frequency motor of one according to any one of claim 1 to 6, is characterized in that: be provided with insulating barrier (95) between end cap (91) and insulating case (94), described insulating barrier (95) is DMC insulating barrier.
8. the internally air-cooled formula variable-frequency motor of one according to any one of claim 1 to 6, is characterized in that: inner cap (92), enclosing cover (97) and end cap (91) are fixed together by bolt (93).
9. the internally air-cooled formula variable-frequency motor of one according to any one of claim 1 to 6, is characterized in that: end cap (91) forms reinforcement (911).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410077713.8A CN104901468A (en) | 2014-03-05 | 2014-03-05 | Internally air-cooled variable-frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410077713.8A CN104901468A (en) | 2014-03-05 | 2014-03-05 | Internally air-cooled variable-frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104901468A true CN104901468A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410077713.8A Pending CN104901468A (en) | 2014-03-05 | 2014-03-05 | Internally air-cooled variable-frequency motor |
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| CN (1) | CN104901468A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059173A (en) * | 2016-07-11 | 2016-10-26 | 电子科技大学中山学院 | Automatic temperature control system of motor |
| CN106059175A (en) * | 2016-08-11 | 2016-10-26 | 广东俊泰液压科技有限公司 | A motor with efficient heat dissipation |
| CN106208491A (en) * | 2015-05-09 | 2016-12-07 | 江苏华源防爆电机有限公司 | Insulation bearing lid is used on a kind of frequency conversion motor |
| CN106208520A (en) * | 2015-05-09 | 2016-12-07 | 江苏华源防爆电机有限公司 | A kind of motor with interior cooling structure |
| CN106300803A (en) * | 2015-05-12 | 2017-01-04 | 江苏华源防爆电机有限公司 | A kind of internally air-cooled formula frequency conversion motor |
| CN107742935A (en) * | 2017-10-17 | 2018-02-27 | 天津飞旋高速电机科技有限公司 | Magnetic suspension high speed motor with novel air-cooled structure |
| CN108321974A (en) * | 2018-03-14 | 2018-07-24 | 宿州迅驰电子科技有限公司 | A kind of electric vehicle motor damping maintenance process |
| CN108462283A (en) * | 2018-03-14 | 2018-08-28 | 宿州迅驰电子科技有限公司 | A kind of electronic automobile-used shock-absorbing motor |
| CN116505678A (en) * | 2023-06-21 | 2023-07-28 | 成都沃飞天驭科技有限公司 | Motor, propulsion system and aircraft |
-
2014
- 2014-03-05 CN CN201410077713.8A patent/CN104901468A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208491A (en) * | 2015-05-09 | 2016-12-07 | 江苏华源防爆电机有限公司 | Insulation bearing lid is used on a kind of frequency conversion motor |
| CN106208520A (en) * | 2015-05-09 | 2016-12-07 | 江苏华源防爆电机有限公司 | A kind of motor with interior cooling structure |
| CN106300803A (en) * | 2015-05-12 | 2017-01-04 | 江苏华源防爆电机有限公司 | A kind of internally air-cooled formula frequency conversion motor |
| CN106059173B (en) * | 2016-07-11 | 2018-09-04 | 电子科技大学中山学院 | Automatic temperature control system of motor |
| CN106059173A (en) * | 2016-07-11 | 2016-10-26 | 电子科技大学中山学院 | Automatic temperature control system of motor |
| CN106059175A (en) * | 2016-08-11 | 2016-10-26 | 广东俊泰液压科技有限公司 | A motor with efficient heat dissipation |
| CN107742935A (en) * | 2017-10-17 | 2018-02-27 | 天津飞旋高速电机科技有限公司 | Magnetic suspension high speed motor with novel air-cooled structure |
| CN108321974A (en) * | 2018-03-14 | 2018-07-24 | 宿州迅驰电子科技有限公司 | A kind of electric vehicle motor damping maintenance process |
| CN108462283A (en) * | 2018-03-14 | 2018-08-28 | 宿州迅驰电子科技有限公司 | A kind of electronic automobile-used shock-absorbing motor |
| CN108462283B (en) * | 2018-03-14 | 2019-07-23 | 湖南丰辉电机有限公司 | A kind of electronic automobile-used shock-absorbing motor |
| CN108321974B (en) * | 2018-03-14 | 2019-08-02 | 宿州市未来网络科技有限责任公司 | A kind of electric vehicle motor damping maintenance process |
| CN116505678A (en) * | 2023-06-21 | 2023-07-28 | 成都沃飞天驭科技有限公司 | Motor, propulsion system and aircraft |
| CN116505678B (en) * | 2023-06-21 | 2023-10-27 | 成都沃飞天驭科技有限公司 | Motor, propulsion system and aircraft |
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Legal Events
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Application publication date: 20150909 |