CN101162858A - Electric machine external cooling fan - Google Patents
Electric machine external cooling fan Download PDFInfo
- Publication number
- CN101162858A CN101162858A CNA2007101146617A CN200710114661A CN101162858A CN 101162858 A CN101162858 A CN 101162858A CN A2007101146617 A CNA2007101146617 A CN A2007101146617A CN 200710114661 A CN200710114661 A CN 200710114661A CN 101162858 A CN101162858 A CN 101162858A
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- CN
- China
- Prior art keywords
- fan
- motor
- shroud
- guard shield
- fan shroud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to a cooling device applicable to various ventilated motors, particularly relates to an external cooling fan applicable to a ventilated motor with speed controlled by a frequency-changer. The invention mainly comprises a fan shroud, fan-shroud vent holes and a cooling fan. The fan shroud is connected to one side of the hood of the motor in a flexible manner; a plurality of vent holes are prepared in the middle of the fan shroud and the cooling fan is arranged outside of the shroud; the output shaft of the cooling fan and the fan leaves are installed in the fan shroud to ensure the fan leaves correspond to the fan leaves of the prime motor. The invention has the advantages of that the prime motor can operate normally, and can start and stop according to requirements at any time, and as a result, the problem of poor heat dissipation of the motor is settled; and the service life of the motor is increased. The invention has an extensive application range, applicable either to frequency-control motors or non-frequency control low speed motors working under relatively high ambient temperature.
Description
One, technical field:
The present invention relates to a kind of cooling device that is applicable to all kinds of ventilated motors, particularly relate to a kind of electric machine external cooling fan that is applicable to by the air-cooled driving force motor of frequency converter timing control.
Two, background technology:
Increasingly mature and extensive use along with the high power motor variable-frequency governor, the rotating speed of motor has obtained arbitrary control, but also be accompanied by simultaneously and new contradiction occurred: at motor on request during the variable frequency low speed running, because the coaxial cooling fan rotation speed of himself also reduces simultaneously, air output significantly reduces, cause the motor heat radiation bad, stator temperature sharply raises; Especially rotating speed lower, when ambient temperature is higher, make the motor stator temperature temperature that oversteps the extreme limit very soon, time has been grown and can cause the accelerated ageing of stator coil magnet wire insulation layer, reduce the useful life of motor even burn motor, the type of cooling of existing motor has seriously restricted effective control range of frequency converter in a large number.
Three, summary of the invention:
Purpose of the present invention is exactly the above-mentioned defective that exists at prior art, and a kind of electric machine external cooling fan that improves radiating efficiency, prolongs the useful life of motor is provided.
Its technical scheme is: mainly be made up of fan shroud, guard shield ventilation hole, cooling blower, described fan shroud is movably connected in guard shield one side of power motor, the center of fan shroud is provided with a plurality of guard shield ventilation holes and external cooling blower, the output shaft of cooling blower and fan leaf are installed in the fan shroud, make fan leaf corresponding with former machine flabellum.
Described cooling blower is fixed on the fan shroud by the blower fan set bolt, and fan leaf is installed in the fan shroud, and its rear portion is the guard shield ventilation hole, and the guard shield set bolt is fixed on guard shield on the power motor.
The invention has the beneficial effects as follows: the operate as normal that does not influence prime mover, can start or stop at any time as required, solved the bad problem of motor heat radiation, prolonged the useful life of motor, it is applied widely, both can be used for frequency control motor, also can be used for the slowspeed machine of the higher non-frequency speed governing of operating ambient temperature.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Among the figure: 1-guard shield set bolt; The 2-fan shroud; 3-guard shield ventilation hole; The 4-cooling blower; The 5-power motor; The former machine flabellum of 6-; The 7-fan leaf; 8-blower fan set bolt.
Five, embodiment:
In conjunction with the accompanying drawings 1, the invention will be further described:
Mainly form by fan shroud 2, guard shield ventilation hole 3, cooling blower 4, under the prerequisite of the basic structure that does not change original motor, remove former fan shroud, it is identical with former guard shield to install a diameter additional, the reinforced fan shroud that length is slightly long, described fan shroud 2 is movably connected in guard shield one side of original power motor, the center of fan shroud 2 is provided with a plurality of guard shield ventilation holes 3 and external cooling blower 4, the output shaft of cooling blower 4 and fan leaf 7 are installed in the fan shroud by blower fan set bolt 8, make fan leaf 7 corresponding with former machine flabellum 6.
With reference to accompanying drawing, former machine flabellum 6 is the original-pack flabellum of power motor 5, after the cooling blower 4 that adds be fixed on the fan shroud 2 by blower fan set bolt 8, fan leaf 7 is installed in the fan shroud 2, its rear portion is a guard shield ventilation hole 3, and guard shield set bolt 1 is fixed on guard shield 2 on the power motor 5.
During use, power motor 5 is power output prime mover, connects the output of variable-frequency governor, is subjected to Frequency Converter Control; External cooling blower 4 connects power frequency supply, controlled by special switch; During the running of higher or power frequency, the rotating speed of its former machine flabellum 6 is also higher, when ventilation quantity can satisfy its heat radiation needs, can disconnect cooling blower 4 when power motor 5 frequency controls, and fan leaf 7 rotates freely; Lower or ambient temperature is higher when making its stator temperature higher when power motor 5 frequency controls, can connect the power supply of cooling blower, fan leaf 7 high speed rotating, cooperate former machine flabellum 6, significantly increase ventilation quantity, reduce the temperature rise of its stator rapidly, thereby effectively guarantee power motor 5 long-time reliably working in normal temperature range.
Certainly, the present invention also goes for the transformation of the cooling device of all kinds of ventilated motors, and it is applied widely, both can be used for frequency control motor, also can be used for the slowspeed machine of the higher non-frequency speed governing of operating ambient temperature.
Claims (2)
1. electric machine external cooling fan, it is characterized in that: mainly form by fan shroud (2), guard shield ventilation hole (3), cooling blower (4), described fan shroud (2) is movably connected in guard shield one side of power motor, the center of fan shroud (2) is provided with a plurality of guard shield ventilation holes (3) and external cooling blower (4), the output shaft of cooling blower (4) and fan leaf (7) are installed in the fan shroud, make fan leaf (7) corresponding with former machine flabellum (6).
2. electric machine external cooling fan according to claim 1, it is characterized in that: described cooling blower (4) is fixed on the fan shroud (2) by blower fan set bolt (8), fan leaf (7) is installed in the fan shroud (2), its rear portion is guard shield ventilation hole (3), and guard shield set bolt (1) is fixed on guard shield (2) on the power motor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101146617A CN101162858A (en) | 2007-11-27 | 2007-11-27 | Electric machine external cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101146617A CN101162858A (en) | 2007-11-27 | 2007-11-27 | Electric machine external cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101162858A true CN101162858A (en) | 2008-04-16 |
Family
ID=39297717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101146617A Pending CN101162858A (en) | 2007-11-27 | 2007-11-27 | Electric machine external cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101162858A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012041210A1 (en) * | 2010-09-27 | 2012-04-05 | Xu Ning | Paper shredder |
| CN103155365A (en) * | 2010-09-29 | 2013-06-12 | 罗尔斯-罗依斯海运有限公司 | Permanent magnet motor with a closed cooling system |
| CN103469383A (en) * | 2013-08-27 | 2013-12-25 | 宜兴市恒通风机有限公司 | Novel energy-saving fan of spinning frame |
| CN104507838A (en) * | 2012-07-04 | 2015-04-08 | 塞尔焦·马尔科拉 | Plant for processing laminated material or in general sheet material from a coil |
| CN105429356A (en) * | 2015-12-14 | 2016-03-23 | 重庆市科诚电机制造有限公司 | Motor having many drive ways and capable of preventing high-temperature damage |
| CN106569064A (en) * | 2016-10-27 | 2017-04-19 | 重庆承亿机电设备有限公司 | Frequency converter and frequency-given signal fault detection method thereof |
| US10243431B2 (en) | 2014-11-07 | 2019-03-26 | Industrial Technology Research Institute | Heat dissipation apparatus for motors |
| CN113794330A (en) * | 2021-07-30 | 2021-12-14 | 嘉兴石化有限公司 | Integrated automatic switching device for cooling variable frequency motor |
-
2007
- 2007-11-27 CN CNA2007101146617A patent/CN101162858A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012041210A1 (en) * | 2010-09-27 | 2012-04-05 | Xu Ning | Paper shredder |
| CN103155365A (en) * | 2010-09-29 | 2013-06-12 | 罗尔斯-罗依斯海运有限公司 | Permanent magnet motor with a closed cooling system |
| CN104507838A (en) * | 2012-07-04 | 2015-04-08 | 塞尔焦·马尔科拉 | Plant for processing laminated material or in general sheet material from a coil |
| CN103469383A (en) * | 2013-08-27 | 2013-12-25 | 宜兴市恒通风机有限公司 | Novel energy-saving fan of spinning frame |
| US10243431B2 (en) | 2014-11-07 | 2019-03-26 | Industrial Technology Research Institute | Heat dissipation apparatus for motors |
| CN105429356A (en) * | 2015-12-14 | 2016-03-23 | 重庆市科诚电机制造有限公司 | Motor having many drive ways and capable of preventing high-temperature damage |
| CN106569064A (en) * | 2016-10-27 | 2017-04-19 | 重庆承亿机电设备有限公司 | Frequency converter and frequency-given signal fault detection method thereof |
| CN106569064B (en) * | 2016-10-27 | 2019-02-26 | 重庆承亿机电设备有限公司 | Frequency converter and its frequency Setting signal fault detection method |
| CN113794330A (en) * | 2021-07-30 | 2021-12-14 | 嘉兴石化有限公司 | Integrated automatic switching device for cooling variable frequency motor |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |