CN201075782Y - External cooling fan of motivation electric machine - Google Patents
External cooling fan of motivation electric machine Download PDFInfo
- Publication number
- CN201075782Y CN201075782Y CNU2007200258288U CN200720025828U CN201075782Y CN 201075782 Y CN201075782 Y CN 201075782Y CN U2007200258288 U CNU2007200258288 U CN U2007200258288U CN 200720025828 U CN200720025828 U CN 200720025828U CN 201075782 Y CN201075782 Y CN 201075782Y
- Authority
- CN
- China
- Prior art keywords
- fan
- motor
- protecting cap
- guard shield
- cooling
- 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.)
- Expired - Fee Related
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to a cooling device that is applicable to various ventilated motors, in particular to an external cooling fan of a motor that is applicable to a wind-cooling power electromotor, the speed of which is controlled and adjusted by a transducer. The technical proposal is as follows: the utility model mainly consists of a protecting cap of a fan, ventilation holes of the protecting cap and a cooling fan, the protecting cap of the fan is movably connected at one side of the protecting cap of the motor, the center of the protecting cap of the fan is provided with a plurality of ventilation holes of the protecting cap and is provided with the external cooling fan, an output shaft of the cooling fan and a blade of the fan are arranged inside the protecting cap of the fan, so as to ensure that the blade of the fan corresponds to the blade of the original device. The utility model has the advantages that under the condition that the normal work of the original motor is not affected, the device can be started or stopped at any moment according to needs, the problem of bad heat dissipation of the electromotor is solved, the service life of the electromotor is prolonged, the scope of application is wide, the device is not only used for a frequency conversion speed regulation motor, but also for a non-frequency conversion and speed regulation low speed motor in the working environment with higher temperature.
Description
One, technical field:
The utility model relates to a kind of cooling device that is applicable to all kinds of ventilated motors, particularly relates to a kind of power motor 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:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of power motor 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 beneficial effects of the utility model are: 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 utility model;
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, the utility model 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 utility model 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. power motor 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. power motor 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 |
|---|---|---|---|
| CNU2007200258288U CN201075782Y (en) | 2007-07-22 | 2007-07-22 | External cooling fan of motivation electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200258288U CN201075782Y (en) | 2007-07-22 | 2007-07-22 | External cooling fan of motivation electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075782Y true CN201075782Y (en) | 2008-06-18 |
Family
ID=39521039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200258288U Expired - Fee Related CN201075782Y (en) | 2007-07-22 | 2007-07-22 | External cooling fan of motivation electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201075782Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110372A (en) * | 2018-09-14 | 2019-01-01 | 中国计量大学 | A kind of low damage power idler wheel and the package part flow arrangement with the idler wheel |
| CN113037013A (en) * | 2021-03-01 | 2021-06-25 | 广东电网有限责任公司佛山供电局 | Generator assembly |
-
2007
- 2007-07-22 CN CNU2007200258288U patent/CN201075782Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110372A (en) * | 2018-09-14 | 2019-01-01 | 中国计量大学 | A kind of low damage power idler wheel and the package part flow arrangement with the idler wheel |
| CN113037013A (en) * | 2021-03-01 | 2021-06-25 | 广东电网有限责任公司佛山供电局 | Generator assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20090824 |