CN201629573U - Self cooling fan power supply of variable frequency motor - Google Patents
Self cooling fan power supply of variable frequency motor Download PDFInfo
- Publication number
- CN201629573U CN201629573U CN2009203179906U CN200920317990U CN201629573U CN 201629573 U CN201629573 U CN 201629573U CN 2009203179906 U CN2009203179906 U CN 2009203179906U CN 200920317990 U CN200920317990 U CN 200920317990U CN 201629573 U CN201629573 U CN 201629573U
- Authority
- CN
- China
- Prior art keywords
- cooling fan
- frequency motor
- variable frequency
- work
- power supply
- 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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Abstract
The utility model discloses a self cooling fan power supply of a variable frequency motor. On the basis of an original circuit, in the distribution aspect, a cable is led out from the wire inlet end of a transducer and then led to the self cooling fan of the variable frequency motor after passing through a three-phase contactor-KM; in the control aspect, a pair of normally open contacts are led out from an intermediate relay-KA3 to be connected to the work coil of the three-phase contactor-KM, and the on-off of the three-phase contactor-KM is controlled by the connection and disconnection of the intermediate relay-KA3. The variable frequency motor and the cooling fan share one distribution loop so as to lead the transducer to normally adjust the frequency and lead the cooling fan to normally work at the work frequency state, thus fundamentally solving the problem that the cooling fan is broken frequently caused by not working at the work frequency state, and ensuring the work continuity of the variable frequency motor.
Description
Technical field
The utility model relates to the cooling fan power supply that a kind of variable-frequency motor carries.
Background technology
Along with the continuous development of China's industrial technology, what explained hereafter required improves constantly, and common electric machine can not meet the needs of production, and variable-frequency motor carries out speed governing by frequency converter, is used in widely in each production field.But along with the extensive use of frequency converter, a reasonable method is not but found in the distribution and the control of the cooling fan that carries for variable-frequency motor.Cooling fan all is the common electric machine of AC 380V usually, requires to work under power frequency, and in most of the cases for the distribution of cooling fan, all is that cooling fan is linked at variable-frequency motor, and when variable-frequency motor moved, cooling fan is and then operation also.And when the frequency converter regulating frequency, frequency that is to say that often all less than 50Hz cooling fan is not worked under power frequency, reason that why cooling fan always breaks down very soon that Here it is! If but provide an independent power supply to cooling fan, guarantee that it works under power frequency, so just increased the loop of low-voltage distribution cabinet and the input of control system, output is counted, covert increase investment.
Summary of the invention
The technical problems to be solved in the utility model is: the cooling fan power supply that provides a kind of variable-frequency motor to carry, be linked at variable-frequency motor to overcome the cooling fan that prior art exists, cooling fan work under less than the 50Hz frequency perishable wait not enough.
The utility model is to constitute like this: improve on original circuit, aspect distribution, draw a cable from the end of incoming cables of frequency converter, this root cable causes the cooling fan that variable-frequency motor carries again by behind three-phase contactor-KM; Aspect control, from middle relay-KA3, draw the actuating coil that a pair of normally opened contact is connected to three-phase contactor-KM, by the connecting and disconnecting of control auxiliary relay-KA3, control the break-make of three-phase contactor-KM.
In sum; the shared distribution loop of variable-frequency motor and cooling fan; can allow the normal regulating frequency of frequency converter; can allow cooling fan under the power frequency state, work normally again; fundamentally solve the problem that cooling fan often breaks down because of not working under the power frequency state, guaranteed the continuity of variable-frequency motor work.
Description of drawings
Fig. 1 is a distribution system schematic diagram of the present utility model;
Fig. 2 is a control principle schematic diagram of the present utility model;
Among the figure, part is components and parts and the wiring in the frequency conversion tank beyond the chain line, and 1 is the motor numbering, and 3 are the control cubicle numbering.
Embodiment
Embodiment of the present utility model: improve on original circuit, aspect distribution (as schematically shown in Figure 1): draw a cable from the end of incoming cables of frequency converter, this root cable causes the cooling fan that variable-frequency motor carries again by behind three-phase contactor-KM; Aspect control (as schematically shown in Figure 2): from middle relay-KA3, draw the actuating coil that a pair of normally opened contact is connected to three-phase contactor-KM,, control the break-make of three-phase contactor-KM by the connecting and disconnecting of control auxiliary relay-KA3.
Claims (1)
1. cooling fan power supply that variable-frequency motor carries is characterized in that: on the basis of primary circuit, draw a cable from the end of incoming cables of frequency converter aspect distribution, this cable causes the cooling fan that variable-frequency motor carries again by behind the three-phase contactor KM; Aspect the control therefrom between relay K A3, draw the actuating coil that a pair of normally opened contact is connected to three-phase contactor KM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203179906U CN201629573U (en) | 2009-12-22 | 2009-12-22 | Self cooling fan power supply of variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203179906U CN201629573U (en) | 2009-12-22 | 2009-12-22 | Self cooling fan power supply of variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629573U true CN201629573U (en) | 2010-11-10 |
Family
ID=43060972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203179906U Expired - Fee Related CN201629573U (en) | 2009-12-22 | 2009-12-22 | Self cooling fan power supply of variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195339A (en) * | 2011-04-15 | 2011-09-21 | 云南大红山管道有限公司 | Medium-voltage inverter capable of starting cooling fan freely |
| CN113346723A (en) * | 2021-06-10 | 2021-09-03 | 广东绿富域资源再生科技有限公司 | Household garbage incinerator slag grab bucket heat dissipation system utilizing main power supply of variable frequency motor |
-
2009
- 2009-12-22 CN CN2009203179906U patent/CN201629573U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195339A (en) * | 2011-04-15 | 2011-09-21 | 云南大红山管道有限公司 | Medium-voltage inverter capable of starting cooling fan freely |
| CN113346723A (en) * | 2021-06-10 | 2021-09-03 | 广东绿富域资源再生科技有限公司 | Household garbage incinerator slag grab bucket heat dissipation system utilizing main power supply of variable frequency motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUIYANG ALUMINUM AND MAGNESIUM DESIGN INSTITUTE CO Free format text: FORMER NAME: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
|
| CP03 | Change of name, title or address |
Address after: 550081 Guiyang Province, Jinyang New District, Zhu Zhu Road, No. 2 Patentee after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550004 No. 208, Beijing Road, Guiyang, Guizhou Patentee before: Guiyang Aluminium and Magnesium Design Inst. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20141222 |
|
| EXPY | Termination of patent right or utility model |