CN220769791U - Cooling structure of fan frequency converter - Google Patents
Cooling structure of fan frequency converter Download PDFInfo
- Publication number
- CN220769791U CN220769791U CN202320113482.6U CN202320113482U CN220769791U CN 220769791 U CN220769791 U CN 220769791U CN 202320113482 U CN202320113482 U CN 202320113482U CN 220769791 U CN220769791 U CN 220769791U
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- Prior art keywords
- fan
- frequency converter
- air inlet
- cooling
- inlet channel
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- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a cooling structure of a fan frequency converter, which comprises an air inlet channel communicated with a fan, wherein the fan frequency converter is arranged in the air inlet channel. The utility model designs a special air inlet channel, all air enters the fan through the air inlet channel, the air inlet is filtered, the frequency converter is arranged in the air inlet channel, and the frequency converter shell and the cooling fan are removed. The fan frequency converter cooling mode can reduce the cost of the frequency converter (without a shell and a cooling fan), the temperature of the frequency converter is lower than the conventional state with the cooling fan, and meanwhile, the cooling reliability is improved (no fan fault hidden trouble exists).
Description
Technical Field
The utility model relates to a fan, in particular to a cooling technology of a fan frequency converter.
Background
The fan frequency converter is a special frequency converter customized for various fans. The variable-frequency speed regulation control device is adopted, and the rotating speed of the fan is changed, so that the air quantity of the fan is changed to adapt to the requirements of a production process, the running energy consumption is the most saved, and the comprehensive benefit is the highest.
The working principle of the fan frequency converter is as follows. The fan frequency converter is usually an AC-DC-AC frequency converter, which rectifies AC to DC and then inverts the DC to AC with required frequency through an inverter, thereby controlling the rotating speed of the fan.
Fan operation curve: the frequency converter is used for controlling the fan, belongs to a power saving method for reducing aerodynamic force, and has obvious power saving effect compared with a common method for controlling air quantity by a regulating air door.
Energy saving rate of the fan under different frequencies: from the fluid mechanics principle, the fan air quantity is related to the motor rotating speed and power: the wind quantity of the fan is in direct proportion to the rotating speed of the fan (motor), the wind pressure of the fan is in direct proportion to the square of the rotating speed of the fan (motor), and the shaft power of the fan is equal to the product of the wind quantity and the wind pressure, so the shaft power of the fan is in direct proportion to the square of the rotating speed of the fan (motor) (namely, the shaft power of the fan is in direct proportion to the square of the power supply frequency).
The frequency converter is usually cooled by the self-contained cooling fan, if the cooling fan fails, the temperature of the frequency converter rises to protect the frequency converter from being stopped, and a large number of practices prove that the cooling fan failure of the frequency converter is a main failure cause of the frequency converter.
Disclosure of Invention
The technical problems solved by the utility model are as follows: how to cool the fan frequency converter with low energy consumption.
In order to solve the technical problems, the utility model provides the following technical scheme: the cooling structure of the fan frequency converter comprises an air inlet channel communicated with a fan, and the fan frequency converter is arranged in the air inlet channel.
The utility model designs a special air inlet duct through which all air enters the fan, the air inlet is filtered and is usually not lower than G4, the frequency converter is arranged in the air inlet duct, and the frequency converter shell and the cooling fan are removed.
The fan frequency converter cooling mode can reduce the cost of the frequency converter (without a shell and a cooling fan), the temperature of the frequency converter is lower than the conventional state with the cooling fan, and meanwhile, the cooling reliability is improved (no fan fault hidden trouble exists).
Drawings
The utility model is further described with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a fan frequency converter cooling structure;
fig. 2 is a top view of fig. 1.
The symbols in the drawings illustrate:
10. a blower; 11. a fan chamber;
20. an air inlet duct; 21. a filter;
30. a fan frequency converter;
40. an outer housing; 41. and supporting the vertical plate.
Detailed Description
Referring to fig. 1 and 2, a cooling structure of a fan frequency converter includes an air inlet duct 20 communicated with a fan 10, and a fan frequency converter 30 is disposed in the air inlet duct.
The inlet of the air inlet duct 20 is provided with a filter 21. The ultra-high speed centrifugal fan is used for filtering the air, the filtering precision of the air is higher than the requirement of the use environment of the frequency converter, and the air quantity is far higher than the air quantity required by the cooling of the frequency converter, so that the air can be used as a free cold source for cooling the frequency converter.
The fan 10 is arranged in a fan chamber 11, the fan chamber is provided with an air inlet, and the air inlet duct 20 is connected with the air inlet. The external cold air enters the fan chamber 11 through the air inlet duct 20 and the air inlet of the fan chamber and then passes through the fan 10.
The fan frequency converter 30 omits a shell and a cooling fan, namely the fan frequency converter of the utility model does not need the shell and the cooling fan, the fan frequency converter 30 is hidden in the air inlet duct 20, and the protection of the shell is not needed. The fan frequency converter 30 is cooled by cold air passing through the air inlet duct 20, and the cold air fully passes through the inside of the fan frequency converter, so that the cooling is not required by a self-contained cooling fan. Therefore, the cost of the fan frequency converter is saved, the structure is simplified, and the heat dissipation and cooling of the fan frequency converter 30 are facilitated.
In order to facilitate fixing of the fan frequency converter 30, a limiting block or a fixing seat is arranged in the air inlet duct 20, and the fan frequency converter is fixed in the air inlet duct 20 by the limiting block or the fixing seat.
Alternatively, the fan chamber 11 is provided in an outer housing 40, the bottom of which is provided with a pair of support risers 41, the pair of support risers 41 supporting the fan chamber 11. An L-shaped air inlet duct is formed between the outer housing 40 and the fan chamber 11, and the fan frequency converter 30 is located in a space formed by the bottom of the fan chamber, the bottom of the outer housing 40 and a pair of support risers 41. The bottom of the fan chamber is provided with an air inlet, one side wall of the outer shell is an air inlet, and a filter 21 is arranged on the air inlet.
Alternatively, the control screen of the fan frequency converter 30 is installed in the control cabinet, so that the use and the inspection are convenient. The control cabinet is internally provided with a control screen of the fan 10.
The foregoing is merely illustrative of the preferred embodiments of the present utility model, and modifications in detail will readily occur to those skilled in the art based on the teachings herein without departing from the spirit and scope of the utility model.
Claims (2)
1. The utility model provides a fan converter cooling structure, includes air inlet duct (20) with fan (10) intercommunication, its characterized in that: the fan frequency converter (30) is arranged in the air inlet duct;
the fan (10) is arranged in the fan chamber (11), the fan chamber is provided with an air inlet, and the air inlet duct (20) is connected with the air inlet;
a filter (21) is arranged at the air inlet of the air inlet duct (20);
the fan room (11) is arranged in the outer shell (40), an L-shaped air inlet channel is formed between the outer shell and the fan room, an air inlet is formed in the bottom of the fan room, one side wall of the outer shell is an air inlet, and the fan frequency converter (30) is located below the fan room and at the bottom of the outer shell (40).
2. The fan frequency converter cooling structure of claim 1, wherein: the fan frequency converter (30) omits the housing and the radiator fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320113482.6U CN220769791U (en) | 2023-01-17 | 2023-01-17 | Cooling structure of fan frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320113482.6U CN220769791U (en) | 2023-01-17 | 2023-01-17 | Cooling structure of fan frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769791U true CN220769791U (en) | 2024-04-12 |
Family
ID=90605913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320113482.6U Active CN220769791U (en) | 2023-01-17 | 2023-01-17 | Cooling structure of fan frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769791U (en) |
-
2023
- 2023-01-17 CN CN202320113482.6U patent/CN220769791U/en active Active
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