CN2410568Y - Extractor fan - Google Patents
Extractor fan Download PDFInfo
- Publication number
- CN2410568Y CN2410568Y CN 99257593 CN99257593U CN2410568Y CN 2410568 Y CN2410568 Y CN 2410568Y CN 99257593 CN99257593 CN 99257593 CN 99257593 U CN99257593 U CN 99257593U CN 2410568 Y CN2410568 Y CN 2410568Y
- Authority
- CN
- China
- Prior art keywords
- fan
- siphunculus
- drive
- air
- passive
- 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 relates to an extractor fan, which is composed of a base, a passive fan, a fan housing and a driving fan, wherein, the base is erected on a groove of a roof, the base is provided with a through hole, and the base is extended with a through pipe which combines with the fan housing by a plurality of connecting sheets, and the passive fan is arranged between the fan housing and the through pipe. The other end of a transmission shaft is combined with the driving fan which is driven by wind force generated by airflow, and the passive fan which is synchronous with the driving fan pumps air in a workshop out of the workshop. The utility model not only saves energy, but also prevents rainwater from dropping in the workshop.
Description
The utility model relates to electrical category, particularly a kind of novel extraction fan.
As everyone knows, air-conditioning system great majority in the factory building of large scale industry rely on the extraction fan that is erected on the factory building top that the gas that is positioned at the upper strata higher temperatures in the factory building is extracted out outside the factory building, the gas of lower temperature then from window that is positioned at factory building lower floor or door introducing factory building inside, forms a simple cross-ventilation; Yet, the present employed extraction fan of factory building, be directly to utilize after the rotation of wind drive fan, the same fan of mat rotates the effect that the centrifugal force that is produced reaches exhausting, in the process of work, promote air-flow that fan rotates and be to apply pressure in the blade of fan, to there be the air-flow of part to conflict mutually, even pour in factory building inside, thereby greatly reduce the exhausting efficient of extraction fan with the air of extracting the open air out; Moreover tradition utilizes the extraction fan of wind drive during the rainy day, and regular meeting makes rainwater splash into factory building inside, and is quite impracticable; Remove in addition, traditional extraction fan promptly can't drive, and lose its original effect when airless is mobile factory building outside.
The purpose of this utility model is exactly all shortcomings that exist at above-mentioned extraction fan, the novel extraction fan that provides a kind of mat air-flow or atm difference to drive, it is designed to and will be responsible for the passive fan of exhausting by the drive fan and of wind drive, simultaneously between drive fan and passive fan, a fan housing is set, separated with air-flow driving the air-flow of drive fan by factory building that passive fan is extracted out, using the air-flow that prevents two different directions conflicts mutually, can improve exhausting efficient, simultaneously can also be rainproof.
Technical conceive of the present utility model:
According to the purpose of this utility model, a kind of novel extraction fan is provided, this extraction fan is the extraction fan that mat air-flow or atm difference drive, its structure mainly includes pedestal, passive fan, fan housing and drive fan constitute, wherein, this pedestal is to be set up in to give on the roof on the fluting of establishing, pedestal is provided with a through hole, through hole extends upward a siphunculus, the outside wall surface of siphunculus with some braces in conjunction with fan housing, passive fan is to be arranged between fan and the siphunculus with power transmission shaft, the power transmission shaft other end after the wind drive drive fan that air-flow produced, must make the passive fan that rotates synchronously with drive fan that the air in the factory building is evacuated to outside the room in conjunction with drive fan, this kind extraction fan is not only saved the energy, can give anti-air-flow by fan housing simultaneously and pour within doors, and have rainproof effect, even if the factory building airless flows, also can reach the purpose of its convection current by the atm difference drive fan inside and outside the factory building.
Accompanying drawings structure of the present utility model and embodiment:
Fig. 1 is a three-dimensional appearance schematic diagram of the present utility model.
Fig. 2 is a perspective exploded view of the present utility model.
Fig. 3 is a cross-sectional schematic of the present utility model.
Fig. 4 is that air-flow of the present utility model promotes drive fan rotation situation schematic diagram.
Fig. 5 is another embodiment schematic diagram of the present utility model.
(10) be that pedestal, (11) are fluting for osculum, (50) for tail top, (51) for lower cover, (44) for upper cover plate, (43) for blade, (42) for drive fan, (41) for passive fan, (40) for passage, (30) for power transmission shaft, (23) for bearing, (22) for fan housing, (21) for brace, (20) for siphunculus, (13) for through hole, (12).
As accompanying drawing 1 to shown in the accompanying drawing 4, the utility model is made of pedestal (10), fan housing (20), passive fan (30) and drive fan (40), wherein pedestal (10) is to be erected to give on the roof (50) on the fluting of establishing (51), on pedestal (10), be provided with a through hole (11), through hole (11) extends upward a siphunculus (12), the end of siphunculus (12) is the Taper Pipe of a convergent, be used to make the air-flow that (50) direction is passed through from the roof to be concentrated, siphunculus (12) outside wall surface is laid with some braces (13); Fan (20) is to be assembled into one by brace (13) and siphunculus (12), and a passage (23) will be kept after siphunculus (12) cover and between siphunculus (12), its shape is the cover body of flaring from top to bottom haply, the center of fan housing (20), can be rotated with respect to fan (20) for power transmission shaft (22) in conjunction with a power transmission shaft (22) with a bearing (21); The arrangement mode of passive fan (30) blade can be assembled in power transmission shaft (22) bottom according to turn of tidal stream formula fan or centrifugal fan, adjacent to siphunculus (12) top; Drive fan (40) is assembled in fan housing (20) top by power transmission shaft (22), the blade (41) of drive fan (40) has the inclination angle and is volute and is arranged in, between lower cover (42) and (43), as shown in Figure 5, can make equidirectional air-flow each blade (41) with respect to air-flow Different Diameter degree inclination angle under, by rotation that air-flow orders about, no matter and from where to air-flow all can drive this drive fan (40) and produce fixing turning to, other is used for giving anti-this drive fan (40) ponding in the osculum (44) that lower cover (43) is laid with the small-bore, and quantity of this osculum (44) and aperture must prevent that a large amount of air-flows influences the thrust of air-flow from this osculum (44) discharge.
Accompanying drawing 3 and accompanying drawing 4 explanation the utility model embodiment in conjunction with the accompanying drawings 2:
After above-mentioned structure assembling, after the air-flow of drive fan (40) outside factory building promotes, being ordered about passive fan (30) synchronously rotates, air in the factory building can be extracted out outside the factory building from fluting (51), through hole (11), siphunculus (12), passage (23) by passive fan (30), be reached the purpose of its exhausting; In the exhausting process, because air-flow and the air-flow of being extracted out through passive fan (30) that factory building is outer, separated by fan housing (20), make two different air-flows not have the situation that conflict mutually produces sinuous flow, the outer air-flow of factory building more can not pour in the factory building, therefore has preferable exhausting efficient, the outer airless of factory building was flowed, also can be by the atm difference drive fan inside and outside the factory building, in purpose to its convection current, remove this, fan housing (20) is set up in siphunculus (12) top, and its effect can hide rain, and fan housing sets up the chimney top, can prevent that rainwater is dropped in the factory building from siphunculus (12), has rainproof effect.
The utility model is simple in structure, easy to manufacture, not only saves the energy, and exhausting efficient height, and can splash into factory building by rainproof water.
Claims (3)
1, a kind of novel extraction fan, it is made of pedestal (10), fan housing (20), passive fan (30) and drive fan (40), it is characterized in that: pedestal (10) is erected on the fluting (51) of roof (50), on pedestal (10), be provided with a through hole (11), through hole (11) extends upward a siphunculus (12), is laid with some braces (13) in the outside wall surface of siphunculus (12); Fan housing (20) is to be assembled into one by brace (13) and siphunculus (12), and will keep a passage (23) after siphunculus (12) cover and between siphunculus (12), the center of fan housing (20) with a bearing (21) in conjunction with a power transmission shaft (22); The arrangement mode of passive fan (30) blade can be assembled in power transmission shaft (22) bottom according to tube-axial fan or centrifugal fan, adjacent to siphunculus (2) top; Drive fan (40) is assembled in fan housing (20) top by power transmission shaft (22), and the blade (41) of drive fan (40) has the inclination angle and is volute and is arranged between upper and lower cover plate (42) and (43).
2,, it is characterized in that the end of said siphunculus (12) is the Taper Pipe of a convergent, can make the air-flow that passes through from the roof direction be concentrated according to the described a kind of novel extraction fan of claim 1.
3,, it is characterized in that the lower cover of said drive fan is laid with the osculum of small-bore (44) according to the described a kind of novel extraction fan of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99257593 CN2410568Y (en) | 1999-12-28 | 1999-12-28 | Extractor fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99257593 CN2410568Y (en) | 1999-12-28 | 1999-12-28 | Extractor fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2410568Y true CN2410568Y (en) | 2000-12-13 |
Family
ID=34040437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99257593 Expired - Fee Related CN2410568Y (en) | 1999-12-28 | 1999-12-28 | Extractor fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2410568Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958911A (en) * | 2017-02-28 | 2017-07-18 | 东南大学 | A kind of powerless ventilation device |
| CN111503808A (en) * | 2019-01-31 | 2020-08-07 | 建造金属工业股份有限公司 | Roof ventilation and heat dissipation device |
-
1999
- 1999-12-28 CN CN 99257593 patent/CN2410568Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958911A (en) * | 2017-02-28 | 2017-07-18 | 东南大学 | A kind of powerless ventilation device |
| CN111503808A (en) * | 2019-01-31 | 2020-08-07 | 建造金属工业股份有限公司 | Roof ventilation and heat dissipation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |