CN203608029U - Air-cooled structure of box-type variable-frequency motor - Google Patents
Air-cooled structure of box-type variable-frequency motor Download PDFInfo
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- CN203608029U CN203608029U CN201320768880.8U CN201320768880U CN203608029U CN 203608029 U CN203608029 U CN 203608029U CN 201320768880 U CN201320768880 U CN 201320768880U CN 203608029 U CN203608029 U CN 203608029U
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- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000009423 ventilation Methods 0.000 claims description 46
- 239000000498 cooling water Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model discloses an air-cooled structure of a box-type variable-frequency motor. The structure comprises a motor support. A stator and a rotor are disposed inside the support. A cooler is connected to the upper end of the motor support. Cooling pipes parallel to the axis of a rotating shaft of a motor are arranged in the cooler, and two ends of the cooling pipes pass through side walls of the cooler. An outer air duct forced fan is installed on the side wall of the cooler, wherein the side wall is not on the side of a shaft protruding end of the motor. An air inlet or an air outlet of the outer air duct forced fan communicates with the cooling pipes. An inner air duct forced fan is installed on the top wall of the cooler. The inner air duct forced fan sucks air from the stator and the rotor to the top of the cooler and the air flows back to the motor support downwards along two sides of the cooler. The structure reduces production costs of the motor, saves energy, lowers noise, reduces motor temperature increase, does not affect tour inspection of instruments on a side surface of the motor by tour inspectors on a site, facilitates usage and maintenance of the motor, and is suitable for usage of large-size large-power box-type variable-frequency motors.
Description
Technical field
The utility model relates to motor technology field, especially a kind of absolutely empty cooling structure of box variable-frequency motor.
Background technology
Along with the raising of social progress, people's energy-saving and environmental protection consciousness, the variable-frequency motor that industrial enterprise are used is more and more.The absolutely empty cooling structure of current box variable-frequency motor is: increase the air power source of two externally ventilated machines as interior wind path at the cooler end face at the bearings mounted two ends of motor, perpendicular to motor side and be positioned at and increase absolutely empty cooling water pipe on the cooler above electric machine rotor iron core, and the air power source of an externally ventilated machine as outer ventilation circuit is installed.There are following several drawbacks in this absolutely empty cooling structure:
1. externally ventilated machine is more, and manufacturing cost is high, and externally ventilated machine power consumption is large, affects the whole energy effect of variable-frequency motor, and motor overall noise is large.
2. outer ventilation circuit is subject to the restriction of electric machine structure, and cooling water pipe is shorter, and the Wind Power Utilization of outer ventilation circuit forced ventilation is lower, and most of wind energy is dissipated in atmosphere as dynamic pressure.
3. outer ventilation circuit is subject to the restriction of electric machine structure, and wind path cooling water pipe is shorter, negligible amounts, and the air of interior wind path can only obtain once coolingly in a cyclic process, and cooling heat dissipation capacity is little, and efficiency is low, can not be applicable to high-power frequency conversion box type electrical machine.
4. outer ventilation circuit forced ventilation machine is positioned at motor side, and the structure of protrusion or the windage of outer ventilation circuit on-the-spot patrol officer patrol and examine the instrument of motor side, is unfavorable for the working service of motor.
Utility model content
The purpose of this utility model is to provide a kind of low cost of manufacture, and radiating efficiency is high, and heat dissipation capacity is large, and noise is low, and environmental protection and energy saving are suitable for the absolutely empty cooling structure of a kind of box variable-frequency motor that large-scale high-speed chamber variable-frequency motor uses.
For achieving the above object, the absolutely empty cooling structure of box variable-frequency motor of the present utility model comprises electric machine stand, is provided with stator and rotor in electric machine stand; Electric machine stand upper end is connected with cooler, is provided with the cooling water pipe that is parallel to machine shaft axis in cooler, and the both ends of cooling water pipe are through cooler sidewall; The cooler sidewall of motor non-shaft stretching end one side is provided with outer ventilation circuit forced ventilation machine, and the air inlet of outer ventilation circuit forced ventilation machine or air outlet are connected with described cooling water pipe; Interior wind path forced ventilation machine is installed on cooler roof, and interior wind path forced ventilation machine is pumped to the air at stator and rotor place cooler top and is back to electric machine stand downwards along cooler both sides.
Described cooling water pipe parallel interval is provided with more than three.
The utlity model has following advantage:
1. the utility model adopts inside and outside wind path forced ventilation machine to complete separately the forced ventilation of the inner and outer air paths of whole motor, compared with three forced ventilation machines of prior art scheme, reduce by a forced ventilation machine, reduce the manufacturing cost of motor, and reduce the power consumption of forced ventilation machine, improved the whole energy effect of variable-frequency motor.Reduce the quantity of forced ventilation machine, naturally also lowered the overall noise of variable-frequency motor.
2. the cooling water pipe of cooler of the present utility model is parallel to many arranged of machine shaft axis, according to the stand structure feature of motor, cooling water pipe length than prior art scheme is long, and quantity is many, can improve the air utilization ratio that outer ventilation circuit forced ventilation machine produces, be conducive to energy-conservationly, and can improve the heat dissipation capacity of cooler of electric motor.
3. the interior wind path circulation that interior wind path forced ventilation machine of the present utility model produces is symmetrical wind path, twice shell side by cooler cooling water pipe of hot blast after cooling motor rotor also obtains cooling, the cooling effectiveness of this type of cooling is high, the air themperature that can effectively reduce motor and enter rotor inside, thereby reduction electric machine temperature rise, is also conducive to improve the capacity of motor.
4. outer ventilation circuit forced ventilation machine of the present utility model is arranged on the cooler of non-shaft stretching end one side of motor, and interior wind path forced ventilation machine is arranged on cooler top.Such arrangement makes the structural body of ventilation blower can not affect on-the-spot patrol officer the instrument of motor side is patrolled and examined, and the air-out of outer ventilation circuit is parallel to machine shaft axis, hot-air after cooling motor can not affect on-the-spot patrol officer yet patrols and examines the instrument of motor side, has facilitated the working service of motor.In addition, the utility model is simple in structure, is convenient to manufacture and use, and is suitable for large-scale high-speed chamber variable-frequency motor and uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
In Fig. 1, direction shown in arrow is the airflow direction of interior wind path circulation.
As shown in Figure 1, the absolutely empty cooling structure of box variable-frequency motor of the present utility model comprises electric machine stand 1, is provided with stator 2 and rotor 3 in electric machine stand 1; Electric machine stand 1 upper end is connected with cooler 4, is provided with the cooling water pipe 5 of the axis that is parallel to machine shaft 8 in cooler 4, and the both ends of cooling water pipe 5 are through cooler 4 sidewalls; Described cooling water pipe 5 parallel interval are provided with more than three.
Cooler 4 sidewalls of motor non-shaft stretching end one side are provided with outer ventilation circuit forced ventilation machine 6, and the air inlet of outer ventilation circuit forced ventilation machine 6 or air outlet are connected with described each cooling water pipe 5; Interior wind path forced ventilation machine 7 is installed on cooler 4 roofs, the fan of interior wind path forced ventilation machine 7 is centrifugal fan, centrifugal fan is pumped to the air at stator 2 and rotor 3 places cooler 4 tops and is back to electric machine stand 1 downwards along cooler 4 both sides, thereby forms circulation wind path in symmetrical expression.
When work, interior wind path forced ventilation machine 7 is pumped to the air at stator 2 and rotor 3 places cooler 4 tops and is back to electric machine stand 1 downwards along cooler 4 both sides, in above-mentioned inner cyclic process, when rising, passes through the thermal current at stator 2 and rotor 3 places the shell side of a cooling water pipe 5, when decline, pass through again the shell side of a cooling water pipe 5, therefore in a cyclic process, obtain twice cooling, compare and strengthened cooling effect in the past.Because cooling water pipe 5 is parallel to the axis of machine shaft 8, therefore its length is compared and has been obtained prolongation in the past, quantity is also many, thereby can improve the utilance (heat transfer rate) of the air-flow that outer ventilation circuit forced ventilation machine 6 produces, and reaches energy-conservation and improves the objects of cooler of electric motor 4 heat dissipation capacity.The hot gas at stator 2 and rotor 3 places is in inner cyclic process, and its heat passes to cooling water pipe 5.In from outside, the cooling cooling water pipe 5 of wind that outer ventilation circuit forced ventilation machine 6 produces, by dissipation of heat in environment, thereby complete the ventilation and heat of motor, guarantee that motor works in certain temperature range.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify or be equal to replacement the utility model, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. the absolutely empty cooling structure of box variable-frequency motor, comprises electric machine stand, is provided with stator and rotor in electric machine stand; It is characterized in that: electric machine stand upper end is connected with cooler, be provided with the cooling water pipe that is parallel to machine shaft axis in cooler, the both ends of cooling water pipe are through cooler sidewall;
The cooler sidewall of motor non-shaft stretching end one side is provided with outer ventilation circuit forced ventilation machine, and the air inlet of outer ventilation circuit forced ventilation machine or air outlet are connected with described cooling water pipe;
Interior wind path forced ventilation machine is installed on cooler roof, and interior wind path forced ventilation machine is pumped to the air at stator and rotor place cooler top and is back to electric machine stand downwards along cooler both sides.
2. the absolutely empty cooling structure of box variable-frequency motor according to claim 1, is characterized in that: described cooling water pipe parallel interval is provided with more than three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768880.8U CN203608029U (en) | 2013-11-29 | 2013-11-29 | Air-cooled structure of box-type variable-frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768880.8U CN203608029U (en) | 2013-11-29 | 2013-11-29 | Air-cooled structure of box-type variable-frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203608029U true CN203608029U (en) | 2014-05-21 |
Family
ID=50720688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320768880.8U Expired - Fee Related CN203608029U (en) | 2013-11-29 | 2013-11-29 | Air-cooled structure of box-type variable-frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203608029U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356648A (en) * | 2015-12-03 | 2016-02-24 | 卧龙电气南阳防爆集团股份有限公司 | High-power, low-speed and positive-pressure type explosion-proof induction motor |
| CN107359763A (en) * | 2017-08-01 | 2017-11-17 | 卧龙电气集团股份有限公司 | A kind of high-power nine phases asynchronous motor |
| CN107994732A (en) * | 2017-12-20 | 2018-05-04 | 卧龙电气集团股份有限公司 | A kind of high power density large-size machine forced ventilation cooling structure |
| CN113708548A (en) * | 2021-09-06 | 2021-11-26 | 华能通辽风力发电有限公司 | Air-cooled generator |
| CN117595573A (en) * | 2023-11-23 | 2024-02-23 | 江苏祝尔慷电机节能技术有限公司 | Box-type variable-frequency permanent magnet motor |
-
2013
- 2013-11-29 CN CN201320768880.8U patent/CN203608029U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356648A (en) * | 2015-12-03 | 2016-02-24 | 卧龙电气南阳防爆集团股份有限公司 | High-power, low-speed and positive-pressure type explosion-proof induction motor |
| CN107359763A (en) * | 2017-08-01 | 2017-11-17 | 卧龙电气集团股份有限公司 | A kind of high-power nine phases asynchronous motor |
| CN107994732A (en) * | 2017-12-20 | 2018-05-04 | 卧龙电气集团股份有限公司 | A kind of high power density large-size machine forced ventilation cooling structure |
| CN113708548A (en) * | 2021-09-06 | 2021-11-26 | 华能通辽风力发电有限公司 | Air-cooled generator |
| CN113708548B (en) * | 2021-09-06 | 2023-12-08 | 华能通辽风力发电有限公司 | Air-cooled generator |
| CN117595573A (en) * | 2023-11-23 | 2024-02-23 | 江苏祝尔慷电机节能技术有限公司 | Box-type variable-frequency permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |