CN2201443Y - Multifunction prefabricated air-duct for fume duct - Google Patents
Multifunction prefabricated air-duct for fume duct Download PDFInfo
- Publication number
- CN2201443Y CN2201443Y CN 94228918 CN94228918U CN2201443Y CN 2201443 Y CN2201443 Y CN 2201443Y CN 94228918 CN94228918 CN 94228918 CN 94228918 U CN94228918 U CN 94228918U CN 2201443 Y CN2201443 Y CN 2201443Y
- Authority
- CN
- China
- Prior art keywords
- duct
- air
- fume
- barrel
- multifunction
- 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 provides a multifunction prefabricated air duct for a fume duct. The utility model has the essential technique that an air inlet is arranged on the wall of an air barrel outside which a pipe joint is connected, an inversely trapezoidal fume isolator is connected with the inner part of the air barrel, an air outlet is arranged on the isolator, and the air inlet of the barrel wall is provided with a pair of semicircular check valve plates which are opened towards the inner part of the barrel. The utility model has the advantages that when a cooking fume exhauster is installed, a wall doesn't need to be chiseled, the cooking fume exhauster is directly installed without destroying a building and has convenient installation, the multifunction prefabricated air duct for the fume duct can effective prevent fume and air from crossing, and because the air barrel has no a baffle plate, an exhausting core has easy realization when the multifunction prefabricated air duct for the fume duct is produced.
Description
The utility model relates to the ventilation stack in the residential building.
At present China to build what adopt in the building be brick structure formula prefabricated flue ventilation stack, there is up and down between the floor problem of collaborating of smoke blowing mutually in its.And on this ventilation stack, smoke exhaust is installed, must be chiseled the metope of flue reserved opening, both bothered, infringement building again.
The purpose of this utility model is: a kind of multifunctional precast flue ventilation stack that can avoid above-mentioned deficiency is provided.
The purpose of this utility model is achieved in that the air inlet port on the air duct wall, tube extension tube attached joint connects down trapezoidal flue gas slider in the tube, leaves gas port above the slider, at the air inlet port place of barrel a pair of semicircle type check valve plate is installed, valve plate is opened in tube.When lower floor flue gas during through the utility model, if when not having negative pressure in the air duct, flue gas can only be outer up along with slider, and can not blow back in the slider; If when in the tube negative pressure being arranged, under the effect of negative pressure, the check valve plate is closed automatically, stop in the flue gas inlet chamber in the tube.When smoke exhaust is installed by resident family, only need stack with smoke exhaust be connected on the union of the present utility model and get final product.
The utility model compared with prior art, the advantage that has is:
When 1, smoke exhaust being installed, do not need to cut a hole wall, directly install, promptly convenient, do not destroy building again.
2, can prevent effectively that smoke blowing from collaborating.
3, no dividing plate in the air duct is loosed core during fabrication and is very easily realized.
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is a front view of the present utility model.
Fig. 2 is Fig. 1 analysing and observe along the A-A line.
Fig. 3 is the sectional view of Fig. 1 along the B-B line.
Air inlet port on square air duct 1 wall, the external circular union 3 of tube connects down trapezoidal flue gas slider 5 in the tube, leaves gas port 4 above the slider, and a pair of semicircle type check valve plate 2 is installed at the air inlet port place of barrel, and valve plate is opened in tube.When lower floor flue gas during through the utility model, if when not having negative pressure in the air duct, flue gas can only be outer up along with slider, and can not blow back in the slider; If when in the tube negative pressure being arranged, under the effect of negative pressure, the check valve plate is closed automatically, stop in the flue gas inlet chamber in the tube.When smoke exhaust is installed by resident family, only need stack with smoke exhaust be connected on the union of the present utility model and get final product.
Claims (1)
1, a kind of multifunctional precast flue ventilation stack has air duct, it is characterized in that: the air inlet port on the air duct wall, tube extension tube attached joint connects down trapezoidal flue gas slider in the tube, leaves gas port above the slider, a pair of semicircle type check valve plate is installed at the air inlet port place of barrel, and valve plate is opened in tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228918 CN2201443Y (en) | 1994-06-17 | 1994-06-17 | Multifunction prefabricated air-duct for fume duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228918 CN2201443Y (en) | 1994-06-17 | 1994-06-17 | Multifunction prefabricated air-duct for fume duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2201443Y true CN2201443Y (en) | 1995-06-21 |
Family
ID=33841357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94228918 Expired - Fee Related CN2201443Y (en) | 1994-06-17 | 1994-06-17 | Multifunction prefabricated air-duct for fume duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2201443Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165380A (en) * | 2017-05-25 | 2017-09-15 | 霍山华凯环保科技有限公司 | A kind of smoke discharging pipe of preventing smoke-channeling |
-
1994
- 1994-06-17 CN CN 94228918 patent/CN2201443Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165380A (en) * | 2017-05-25 | 2017-09-15 | 霍山华凯环保科技有限公司 | A kind of smoke discharging pipe of preventing smoke-channeling |
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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 |