CN2311644Y - Turbo-exhaust fan with non-return device - Google Patents
Turbo-exhaust fan with non-return device Download PDFInfo
- Publication number
- CN2311644Y CN2311644Y CN 97234919 CN97234919U CN2311644Y CN 2311644 Y CN2311644 Y CN 2311644Y CN 97234919 CN97234919 CN 97234919 CN 97234919 U CN97234919 U CN 97234919U CN 2311644 Y CN2311644 Y CN 2311644Y
- Authority
- CN
- China
- Prior art keywords
- backstop
- utility
- base
- ventilating fan
- worm gear
- 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 relates to a turbo-exhaust fan with a non-return device. The utility model comprises a turbo-exhaust fan, a base, a, housing, etc., wherein, the turbo-exhaust fan is fixed on the base, and the exhaust opening of the turbo-exhaust fan is communicated with an air outlet arranged on the base. The utility model is characterized in that an escape pipe is installed on the air outlet arranged on the base, and a non-return device is installed on the outlet end of the escape pipe. The utility model has the advantages of novel design and simple structure; the utility model overcomes the disadvantages of an ordinary exhaust fan used in an environment with pressure, such as the centralized exhaust system of a residential building, and the disadvantages comprise insufficient wind pressure, easy air return, etc.; the utility model puts an end to the burbling action of horizontally exhausted fume in a pipeline, and efficiently improves the use effect of the exhaust system.
Description
The utility model relates to a kind of ventilating fan, particularly a kind of worm gear ventilating fan with backstop.
At present, the ventilating fan that general family uses is blade type, its using effect under general no pressure condition still can, but just concentrate releasing system etc. to have to use in the pressure ring border in residential housing and exist not enough, the easy problem such as return air of blast, and the flue gas that level is discharged also has the flow-disturbing effect in vertical pipeline, has influenced the effect of concentrated exhaust to a great extent.
The purpose of this utility model provides a kind of worm gear ventilating fan with backstop.
Task of the present utility model is to realize like this, the utility model comprises worm gear ventilating fan, base, shell etc., described worm gear ventilating fan is fixed on the base, the relief opening of worm gear ventilating fan and the air outlet on the base communicate, it is characterized in that: on the air outlet of base, steam outlet pipe is housed, backstop is housed at outlet one end of steam outlet pipe.
The utility model is novel, simple in structure, overcome common ventilating fan and concentrated releasing system etc. to have to use in the pressure ring border not enough, the easy shortcoming such as return air of the blast that exists in residential housing, the flue gas of having stopped the level discharge has improved the using effect of releasing system effectively in ducted flow-disturbing effect.
Now the utility model is described in further detail in conjunction with the accompanying drawings.
Fig. 1 is a structural representation of the present utility model.
The utility model comprises worm gear ventilating fan 1, base 2, shell 3 etc., described worm gear ventilating fan 1 is fixed on the base 2, air outlet 4 on the relief opening of worm gear ventilating fan 1 and the base 2 communicates, it is characterized in that: on the air outlet 4 of base 2, steam outlet pipe 5 is housed, backstop is housed at outlet one end of steam outlet pipe 5.Described steam outlet pipe 6 can be the pipeline of the opening bend pipe, inclined tube or other shapes that make progress; Described backstop can be the turnover panel 6 that is hinged on steam outlet pipe 5 outlet end, also can be louver backstop, cone valve backstop etc.
Claims (6)
1, a kind of worm gear ventilating fan with backstop, comprise worm gear ventilating fan (1), base (2), shell (3) etc., described worm gear ventilating fan (1) is fixed on the base (2), air outlet (4) on the relief opening of worm gear ventilating fan (1) and the base (2) communicates, it is characterized in that: on the air outlet (4) of base (2), steam outlet pipe (5) is housed, backstop is housed at the outlet end of steam outlet pipe (5).
2, the worm gear ventilating fan of band backstop according to claim 1 is characterized in that: described steam outlet pipe (5) is the bend pipe that opening makes progress.
3, the worm gear ventilating fan of band backstop according to claim 1 is characterized in that: described steam outlet pipe (5) is the inclined tube that opening makes progress.
4, the worm gear ventilating fan of band backstop according to claim 1 and 2 is characterized in that: described backstop is the turnover panel (6) that is hinged on steam outlet pipe (5) outlet end.
5, the worm gear ventilating fan of band backstop according to claim 1 and 2 is characterized in that: described backstop is the louver backstop.
6, the worm gear ventilating fan of band backstop according to claim 1 and 2 is characterized in that: described backstop is the cone valve backstop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234919 CN2311644Y (en) | 1997-06-26 | 1997-06-26 | Turbo-exhaust fan with non-return device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234919 CN2311644Y (en) | 1997-06-26 | 1997-06-26 | Turbo-exhaust fan with non-return device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2311644Y true CN2311644Y (en) | 1999-03-24 |
Family
ID=33946159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97234919 Expired - Fee Related CN2311644Y (en) | 1997-06-26 | 1997-06-26 | Turbo-exhaust fan with non-return device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2311644Y (en) |
-
1997
- 1997-06-26 CN CN 97234919 patent/CN2311644Y/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 | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Shen Huixian Document name: payment instructions |
|
| 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 |