CN2480715Y - Apparatus for preventing air reverse flow - Google Patents
Apparatus for preventing air reverse flow Download PDFInfo
- Publication number
- CN2480715Y CN2480715Y CN 01238323 CN01238323U CN2480715Y CN 2480715 Y CN2480715 Y CN 2480715Y CN 01238323 CN01238323 CN 01238323 CN 01238323 U CN01238323 U CN 01238323U CN 2480715 Y CN2480715 Y CN 2480715Y
- Authority
- CN
- China
- Prior art keywords
- reverse flow
- preventing air
- air reverse
- housing
- flow device
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an anti-downdraft device, which comprises a casing, a ventilator mechanism arranged in the casing is connected with a directional fan mechanism. The utility model is novel and reasonable in structure and can prevent downdraft effectively.
Description
The utility model relates to the servicing unit that a kind of discharge duct is used.
Existing discharge duct, the general employing directly led to outdoor mode with pipeline.The example Flue Gas Water Heater, because that its flue tube directly leads to is outdoor, when wind was arranged, especially when winter, a piercing cold wind, the waste gas that water heater is discharged was easily blown back indoor when outdoor, generation people's the smell of choking, and easily cause danger.
The purpose of this utility model is to provide a kind of preventing air reverse flow device that can prevent effectively that extraneous wind-fall from irritating.
Technical solution of the present utility model is:
A kind of preventing air reverse flow device, its feature: comprise housing, dress ventilating fan mechanism in the housing, ventilating fan mechanism connects directed fan blade mechanism.
Directed fan blade mechanism top dress rain cover.Ventilating fan mechanism is fixed on the interior support of housing.The outer load of housing connects support.
The utility model novel structure, reasonable, utilize the characteristics of directed fan blade, make the ventilating fan that connects together with it only rotate (promptly being in the air draft state) all the time to a direction, when calm, the waste gas that water heater is discharged is discharged from the space of ventilating fan, when wind is arranged, and directed fan blade work, the exhaust fan that rotates is discharged waste gas by force, thereby has prevented pouring in down a chimney of wind.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the configuration diagram of an embodiment of the utility model.
Fig. 2 is the configuration diagram of ventilating fan mechanism and directed fan blade mechanism among Fig. 1.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the fixing supporting structure diagrammatic sketch of ventilating fan mechanism among Fig. 1.
A kind of preventing air reverse flow device comprises housing 1, dress ventilating fan mechanism in the housing 1, and ventilating fan mechanism connects directed fan blade mechanism, directed fan blade mechanism top dress rain cover 4, ventilating fan mechanism is fixed on the interior support 5 of housing, and the outer load of housing connects support 6.Directed fan blade mechanism comprises directed fan blade 3 and connecting rod 7, and ventilating fan mechanism comprises fan blade 2, fan blade connecting axle 8, is sleeved on bearing 9,10, check ring 11,12, sealing ring 13,14 on the axle 8.
Claims (4)
1, a kind of preventing air reverse flow device is characterized in that: comprise housing, and dress ventilating fan mechanism in the housing, ventilating fan mechanism connects directed fan blade mechanism.
2, preventing air reverse flow device according to claim 1 is characterized in that: directed fan blade mechanism top dress rain cover.
3, preventing air reverse flow device according to claim 1 and 2 is characterized in that: ventilating fan mechanism is fixed on the interior support of housing.
4, preventing air reverse flow device according to claim 1 and 2 is characterized in that: the outer load of housing connects support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01238323 CN2480715Y (en) | 2001-06-14 | 2001-06-14 | Apparatus for preventing air reverse flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01238323 CN2480715Y (en) | 2001-06-14 | 2001-06-14 | Apparatus for preventing air reverse flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2480715Y true CN2480715Y (en) | 2002-03-06 |
Family
ID=33650971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01238323 Expired - Fee Related CN2480715Y (en) | 2001-06-14 | 2001-06-14 | Apparatus for preventing air reverse flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2480715Y (en) |
-
2001
- 2001-06-14 CN CN 01238323 patent/CN2480715Y/en not_active Expired - Fee Related
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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 |