CN111642119A - Dustproof fan at top of electrical cabinet - Google Patents
Dustproof fan at top of electrical cabinet Download PDFInfo
- Publication number
- CN111642119A CN111642119A CN202010635892.8A CN202010635892A CN111642119A CN 111642119 A CN111642119 A CN 111642119A CN 202010635892 A CN202010635892 A CN 202010635892A CN 111642119 A CN111642119 A CN 111642119A
- Authority
- CN
- China
- Prior art keywords
- air guide
- guide pipe
- wall
- shaped
- air inlet
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20181—Filters; Louvers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a dustproof fan at the top of an electric cabinet, which comprises a top plate of the electric cabinet body, wherein an air inlet hole is formed in the top plate, an inverted U-shaped air guide pipe is fixed on the top plate, the rear end of the U-shaped air guide pipe is communicated with the air inlet hole, and a fan is fixedly connected in the U-shaped air guide pipe above the air inlet hole; a plurality of vertical air inlet grooves are formed in the outer wall of the front end of the U-shaped air guide pipe, a hemispherical shell-shaped bottom plate is inserted into the U-shaped air guide pipe at the air inlet grooves, and the outer ring of the bottom plate is welded and fixed on the inner wall of the U-shaped air guide pipe; and a filter screen covering an air inlet groove on the upper side of the bottom plate is inserted in the U-shaped air guide pipe on the upper side of the bottom plate.
Description
Technical Field
The invention relates to the technical field of cooling fans, in particular to a dustproof fan at the top of an electrical cabinet.
Background
At present, electric control cabinets with high heat dissipation capacity such as frequency converters, soft starters, PLC and the like are provided with heat dissipation holes on the cabinet top and are provided with fans, the fans on the existing electric control cabinet top are simple (generally, simple exhaust fan structures), dust accumulated on the fans or the cabinet top of the electric control cabinet is easy to suck into the electric control cabinet during working, and the dust can influence the working of electric elements in the electric control cabinet and even damage products such as frequency converters and the like; although some electric control cabinets can be provided with filter screens in the radiating holes, the dustproof effect is still not good.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a dustproof fan at the top of an electric cabinet, which is provided with a multi-layer dustproof structure and can reduce dust entering the electric cabinet.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a dustproof fan at the top of an electrical cabinet comprises a top plate of the electrical cabinet body, wherein an air inlet hole is formed in the top plate, an inverted U-shaped air guide pipe is fixed on the top plate, the rear end of the U-shaped air guide pipe is communicated with the air inlet hole, and a fan is fixedly connected in the U-shaped air guide pipe above the air inlet hole; a plurality of vertical air inlet grooves are formed in the outer wall of the front end of the U-shaped air guide pipe, a hemispherical shell-shaped bottom plate is inserted into the U-shaped air guide pipe at the air inlet grooves, and the outer ring of the bottom plate is welded and fixed on the inner wall of the U-shaped air guide pipe; and a filter screen covering an air inlet groove on the upper side of the bottom plate is inserted in the U-shaped air guide pipe on the upper side of the bottom plate.
Preferably, the filter screen is cylindrical, the diameter of the outer wall of the filter screen is equal to that of the inner wall of the U-shaped air guide pipe, and the upper end face of the filter screen is higher than the upper bottom face of the air inlet groove.
Preferably, the upper end of the filter screen is welded and fixed on the inner wall of the U-shaped air guide pipe, and the lower end of the filter screen is welded and fixed on the bottom plate.
Preferably, the circle center of the arc of the inner wall of the bottom plate is positioned at the upper side of the bottom plate.
Preferably, an air guide cover is inserted and sleeved on the U-shaped air guide pipe outside the filter screen, the air guide cover comprises an air guide cylinder with a circular arc-shaped cross section, a conical transition cylinder is formed at the upper end of the air guide cylinder, and a vertical air inlet cylinder is formed at the upper end of the transition cylinder; and a connecting plate is fixed on the outer wall of the wind scooper and is fixed on the pipe wall at the rear end of the U-shaped wind guide pipe.
Preferably, a plurality of supporting legs are fixed on the outer wall of the air guide cylinder on the air guide cover, and the lower ends of the supporting legs are fixed on the top plate.
Preferably, the diameter of the inner ring of the lower end of the air guide cylinder on the air guide cover is not larger than that of the inner wall of the air inlet cylinder, the diameter of the inner wall of the air inlet cylinder is larger than that of the outer wall of the U-shaped air guide pipe, and the central axis of the pipe body at the front end of the U-shaped air guide pipe is coincided with that of the air guide cover.
Preferably, the lower end of the bottom plate is fixed with a support column, and the lower end of the support column is fixed on the top plate.
Preferably, the diameter of the inner wall of the U-shaped air guide pipe is equal to the aperture of the air inlet hole, a flange is formed on the pipe wall at the rear end of the U-shaped air guide pipe, and the flange abuts against the top plate.
The invention has the beneficial effects that: the air guide structure of the fan and the filter screen structure can form dust to enter the electric control cabinet.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of a half-section structure of the present invention.
In the figure: 1. a top plate; 11. an air inlet hole; 2. a U-shaped air guide pipe; 21. an air inlet groove; 22. a flange; 3. a fan; 4. a base plate; 5. filtering with a screen; 6. a wind scooper; 61. an air duct; 62. a transition cylinder; 63. an air inlet cylinder; 7. a connecting plate; 8. supporting legs; 9. and (4) a support column.
Detailed Description
Example (b): as shown in fig. 1 to 3, the dustproof fan at the top of the electrical cabinet comprises a top plate 1 of the electrical cabinet body, wherein an air inlet 11 is formed in the top plate 1, an inverted U-shaped air guide pipe 2 is fixed on the top plate 1, the rear end of the U-shaped air guide pipe 2 is communicated with the air inlet 11, and a fan 3 is fixedly connected in the U-shaped air guide pipe 2 above the air inlet 11; a plurality of vertical air inlet grooves 21 are formed in the outer wall of the front end of the U-shaped air guide pipe 2, a hemispherical shell-shaped bottom plate 4 is inserted into the U-shaped air guide pipe 2 at the air inlet grooves 21, and the outer ring of the bottom plate 4 is welded and fixed on the inner wall of the U-shaped air guide pipe 2; a filter screen 5 covering the air inlet slot 21 on the upper side of the bottom plate 4 is inserted in the U-shaped air guide pipe 2 on the upper side of the bottom plate 4.
The filter screen 5 is cylindrical, the diameter of the outer wall of the filter screen 5 is equal to that of the inner wall of the U-shaped air guide pipe 2, and the upper end face of the filter screen 5 is higher than the upper bottom face of the air inlet groove 21.
The upper end of the filter screen 5 is welded and fixed on the inner wall of the U-shaped air guide pipe 2, and the lower end of the filter screen 5 is welded and fixed on the bottom plate 4.
The circle center of the arc of the inner wall of the bottom plate 4 is positioned at the upper side of the bottom plate 4.
An air guide cover 6 is inserted and sleeved on the U-shaped air guide pipe 2 outside the filter screen 5, the air guide cover 6 comprises an air guide cylinder 61 with an arc-shaped cross section, a conical transition cylinder 62 is formed at the upper end of the air guide cylinder 61, and a vertical air inlet cylinder 63 is formed at the upper end of the transition cylinder 62; and a connecting plate 7 is fixed on the outer wall of the wind scooper 6, and the connecting plate 7 is fixed on the pipe wall at the rear end of the U-shaped wind guide pipe 2.
A plurality of supporting feet 8 are fixed on the outer wall of the air duct 61 on the air guide cover 6, and the lower ends of the supporting feet 8 are fixed on the top plate 1.
The diameter of the inner ring of the lower end of the air duct 61 on the air guide cover 6 is not more than that of the inner wall of the air inlet duct 63, the diameter of the inner wall of the air inlet duct 63 is more than that of the outer wall of the U-shaped air guide pipe 2, and the central axis of the front end pipe body of the U-shaped air guide pipe 2 coincides with that of the air guide cover 6.
The lower end of the bottom plate 4 is fixed with a support column 9, and the lower end of the support column 9 is fixed on the top plate 1.
The diameter of the inner wall of the U-shaped air guide pipe 2 is equal to the aperture of the air inlet 11, a flange 22 is formed on the pipe wall at the rear end of the U-shaped air guide pipe 2, and the flange 22 abuts against the top plate 1.
The working principle is as follows: the invention relates to a dustproof fan at the top of an electrical cabinet, which is provided with a U-shaped air guide pipe 2, wherein air enters the front end of the U-shaped air guide pipe 2, and cooling air is input to the electrical cabinet by the rear end of the U-shaped air guide pipe 2; the air enters the front end of the U-shaped air guide pipe 2 in a mode that air enters the air guide cover 6 and then enters the air inlet groove 21 of the U-shaped air guide pipe 2 along the inner wall of the air guide cylinder 61 on the air guide cover 6 in a manner of facing the air inlet groove 21, so that the air flow enters from top to bottom, influences on dust accumulated on the top of the electrical cabinet are caused by the air flow, and the dust is not easy to suck into the electrical cabinet;
meanwhile, the filter screen 5 is arranged, the dustproof effect is enhanced, and dust can be prevented from being sucked into the electrical cabinet.
The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.
Claims (9)
1. The utility model provides a dustproof fan at regulator cubicle top, includes roof (1) of the regulator cubicle cabinet body, and the shaping has fresh air inlet (11), its characterized in that on roof (1): an inverted U-shaped air guide pipe (2) is fixed on the top plate (1), the rear end of the U-shaped air guide pipe (2) is communicated with an air inlet hole (11), and a fan (3) is fixedly connected in the U-shaped air guide pipe (2) above the air inlet hole (11); a plurality of vertical air inlet grooves (21) are formed in the outer wall of the front end of the U-shaped air guide pipe (2), a hemispherical shell-shaped bottom plate (4) is inserted into the U-shaped air guide pipe (2) at the air inlet grooves (21), and the outer ring of the bottom plate (4) is welded and fixed on the inner wall of the U-shaped air guide pipe (2); a filter screen (5) covering an air inlet groove (21) at the upper side of the bottom plate (4) is inserted in the U-shaped air guide pipe (2) at the upper side of the bottom plate (4).
2. The dustproof fan at the top of the electric cabinet as claimed in claim 1, wherein: the filter screen (5) is cylindrical, the diameter of the outer wall of the filter screen (5) is equal to that of the inner wall of the U-shaped air guide pipe (2), and the upper end face of the filter screen (5) is higher than the upper bottom face of the air inlet groove (21).
3. The dustproof fan at the top of the electric cabinet as claimed in claim 2, wherein: the upper end of the filter screen (5) is welded and fixed on the inner wall of the U-shaped air guide pipe (2), and the lower end of the filter screen (5) is welded and fixed on the bottom plate (4).
4. The dustproof fan at the top of the electric cabinet as claimed in claim 1, wherein: the circular arc circle center of the inner wall of the bottom plate (4) is positioned on the upper side of the bottom plate (4).
5. The dustproof fan at the top of the electric cabinet as claimed in claim 4, wherein: an air guide cover (6) is inserted and sleeved on the U-shaped air guide pipe (2) on the outer side of the filter screen (5), the air guide cover (6) comprises an air guide cylinder (61) with a circular arc-shaped cross section, a conical transition cylinder (62) is formed at the upper end of the air guide cylinder (61), and a vertical air inlet cylinder (63) is formed at the upper end of the transition cylinder (62); and a connecting plate (7) is fixed on the outer wall of the wind scooper (6), and the connecting plate (7) is fixed on the pipe wall at the rear end of the U-shaped wind guide pipe (2).
6. The dustproof fan at the top of the electric cabinet as claimed in claim 5, wherein: a plurality of supporting legs (8) are fixed on the outer wall of the air duct (61) on the air guide cover (6), and the lower ends of the supporting legs (8) are fixed on the top plate (1).
7. The dustproof fan at the top of the electric cabinet as claimed in claim 5, wherein: the diameter of the inner ring of the lower end of the air guide cylinder (61) on the air guide cover (6) is not larger than that of the inner wall of the air inlet cylinder (63), the diameter of the inner wall of the air inlet cylinder (63) is larger than that of the outer wall of the U-shaped air guide pipe (2), and the central axis of the front end pipe body of the U-shaped air guide pipe (2) coincides with that of the air guide cover (6).
8. The dustproof fan at the top of the electric cabinet as claimed in claim 1, wherein: the lower extreme of bottom plate (4) is fixed with support column (9), and the lower extreme of support column (9) is fixed on roof (1).
9. The dustproof fan at the top of the electric cabinet as claimed in claim 1, wherein: the diameter of the inner wall of the U-shaped air guide pipe (2) is equal to the aperture of the air inlet hole (11), a flange (22) is formed on the pipe wall of the rear end of the U-shaped air guide pipe (2), and the flange (22) abuts against the top plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635892.8A CN111642119A (en) | 2020-07-03 | 2020-07-03 | Dustproof fan at top of electrical cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635892.8A CN111642119A (en) | 2020-07-03 | 2020-07-03 | Dustproof fan at top of electrical cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111642119A true CN111642119A (en) | 2020-09-08 |
Family
ID=72332196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010635892.8A Withdrawn CN111642119A (en) | 2020-07-03 | 2020-07-03 | Dustproof fan at top of electrical cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111642119A (en) |
-
2020
- 2020-07-03 CN CN202010635892.8A patent/CN111642119A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200908 |
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| WW01 | Invention patent application withdrawn after publication |