CN2937567Y - Auto-close exhaust fan - Google Patents
Auto-close exhaust fan Download PDFInfo
- Publication number
- CN2937567Y CN2937567Y CN 200620075585 CN200620075585U CN2937567Y CN 2937567 Y CN2937567 Y CN 2937567Y CN 200620075585 CN200620075585 CN 200620075585 CN 200620075585 U CN200620075585 U CN 200620075585U CN 2937567 Y CN2937567 Y CN 2937567Y
- Authority
- CN
- China
- Prior art keywords
- ventilating fan
- flabellum
- elasticity
- air port
- wind dish
- 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
Links
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Abstract
The utility model relates to a self switching fan blower, which comprises a frame, an electric motor and a reinforcing plate. The electric motor is mounted in the frame and is fixedly connected with the frame through the reinforcing plate. The utility model also comprises a wind disk and the wind disk is fixed on a rotor of the electric motor. A tuyere is arranged on the wind disk and an elastic fan leaf is connected at the wind disk. A matching block is fixedly connected on the elastic fan leaf. A loop-shaped sealing ring is arranged at the position where the wind disk is jointed with the frame. By adopting a special elastic fan leaf structure, this self switching fan blower has advantages of simple structure, being conveniently cleaned, low cost and saving energy, etc.
Description
Technical field
The utility model relates to a kind of ventilating fan of switching certainly that uses at industry and civil area.
Background technique
Extensively adopt ventilating fan to realize indoor and outdoor ventilation, smoke evacuation at industry and civil area at present; because exhaust port can be closed when a lot of occasions required ventilating fan to shut down; be head it off, generally set up independently air port closing device at present in the ventilating fan outside.The opening of present this air port locking device/closed operation has dual mode: a kind of mode is to utilize manually or the motor drive mechanism operation, is opening/link when closing ventilating fan and open/close the air port; Another kind of mode is that the blast that produces when directly opening ventilating fan and utilizing air draft blows air port (being generally movable blinds shape structure) open, and ventilating fan when shutting down the air port blinds close automatically because of the blast forfeiture.Existing ventilating fan is structurally too complicated, and cost is higher, and cleans inconvenience, utilizes blast to open the air port blinds in addition and also can cause the drafting efficiency reduction and increase energy consumption.
Summary of the invention
For overcome that the ventilating fan that adopts at present extensively exists such as complex structure, clean inconvenience, problem such as cost is higher and energy consumption is bigger, it is a kind of novel from opening and closing ventilating fan that the utility model provides, this opens and closes ventilating fan certainly and adopts unique elasticity blade structure, have advantages such as simple in structure, that cleaning is convenient, with low cost and energy-conservation, can overcome the above-mentioned shortcoming of the ventilating fan existence of present use.
It is a kind of from opening and closing ventilating fan that the utility model provides, comprise framework, motor, gusset, motor is located in the framework and by gusset and is connected with frame fixation, also comprise the wind dish, the wind dish is fixed on the rotor of motor, on the wind dish, be provided with the air port and connect the elasticity flabellum, on described elasticity flabellum, be connected with balancing weight at the place, air port.Junction point at wind dish and framework is provided with the annular seal ring.
When ventilating fan was shut down, the elasticity flabellum on the wind dish was in closed state, and the air port is closed.After ventilating fan is opened, the wind disc spins is quickened, when reaching certain speed, the centrifugal force that balancing weight on the elasticity flabellum produces draws back the elasticity flabellum, this moment, opened in the air port, the elasticity flabellum is in the state of inclinedly opening simultaneously, forms helical air draft flabellum, drives air along with the rotation of wind dish and passes through the air port; After ventilating fan was shut down, wind dish rotating speed reduced gradually, and the centrifugal force that the balancing weight on the elasticity flabellum produces also reduces gradually, and the elasticity flabellum returns to original operating position gradually under the effect of elastic force, and the air port is closed.
Of the present utility model opening and closing ventilating fan can produce following beneficial effect certainly: the elasticity flabellum on this air draft pectinid dish serves as the air port blinds simultaneously; cost simple in structure is lower; and the unlatching of elasticity flabellum is that the centrifugal force that utilizes balancing weight to produce is reached; need not consumed cabin air power; thereby energy-saving effect is obvious, and when ventilating fan was shut down in addition, the elasticity flabellum on the wind dish was in closed state; whole wind dish profile presents flat form substantially, cleans very convenient.In a word, this ventilating fan has advantages such as simple in structure, that cleaning is convenient, with low cost and energy-conservation.
Description of drawings
Fig. 1 is of the present utility model from the organigram of an embodiment under outage state that opens and closes ventilating fan.
Fig. 2 is of the present utility model from the A-A generalized section of an embodiment under outage state that opens and closes ventilating fan.
Fig. 3 is the schematic representation that forms spiral fan from an embodiment who opens and closes ventilating fan elasticity flabellum under opening state under the centrifugal action that balancing weight produces of the present utility model.
Embodiment
Hereinafter an embodiment of the present utility model is described with reference to Fig. 1-3.
Comprise framework 2, motor 6, gusset 7 from opening and closing ventilating fan, motor 6 is located in the framework 2 and by gusset 7 fixedlys connected with framework 2.This ventilating fan further comprises rigidity plastics or metal wind dish 1, and wind dish 1 is fixed on the rotor of motor 6 by nut 9.On wind dish 1, open and stay the air port, and pass through rivet 4 riveted joints or welding plastic or metal elasticity flabellum 3, on elasticity flabellum 3, be connected with the balancing weight 5 of some (being expressed as 2 among the figure) Different Weight, for example be made of metal at the place, air port.Junction point at wind dish 1 and framework 2 is provided with annular seal ring 8, and described seal ring is made by nylon wire or animal wool.When ventilating fan was shut down, the elasticity flabellum 3 on the wind dish 1 was in closed state, and the air port is closed.After ventilating fan is opened, 1 rotation of wind dish is quickened, when reaching certain speed, the centrifugal force that balancing weight 5 on the elasticity flabellum 3 produces draws back elasticity flabellum 3, this moment, opened in the air port, elasticity flabellum 3 is in the state of inclinedly opening simultaneously, forms helical air draft flabellum, drives air along with the rotation of wind dish 1 and passes through the air port; After ventilating fan was shut down, wind dish 1 rotating speed reduced gradually, and the centrifugal force that the balancing weight 5 on the elasticity flabellum 3 produces also reduces gradually, and elasticity flabellum 3 returns to original operating position gradually under the effect of elastic force, and the air port is closed.
Claims (2)
1, a kind of from opening and closing ventilating fan, comprise framework (2), motor (6), gusset (7), motor (6) is located in the framework (2) and by gusset (7) fixedlys connected with framework (2), it is characterized in that, also comprise wind dish (1), wind dish (1) is fixed on the rotor of motor (6), is provided with the air port and connects elasticity flabellum (3) at the place, air port on wind dish (1), is connected with balancing weight (5) on described elasticity flabellum (3).
2, according to claim 1 from opening and closing ventilating fan, it is characterized in that, be provided with annular seal ring (8) at the junction point of wind dish (1) and framework (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075585 CN2937567Y (en) | 2006-08-09 | 2006-08-09 | Auto-close exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075585 CN2937567Y (en) | 2006-08-09 | 2006-08-09 | Auto-close exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937567Y true CN2937567Y (en) | 2007-08-22 |
Family
ID=38361593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620075585 Expired - Fee Related CN2937567Y (en) | 2006-08-09 | 2006-08-09 | Auto-close exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2937567Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137682A (en) * | 2021-04-23 | 2021-07-20 | 河南大象建设工程有限公司 | Exhaust system for constructional engineering |
-
2006
- 2006-08-09 CN CN 200620075585 patent/CN2937567Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137682A (en) * | 2021-04-23 | 2021-07-20 | 河南大象建设工程有限公司 | Exhaust system for constructional engineering |
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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 |