CN201521093U - Downdraft proofing blast cap of ventilation exhaust duct for buildings - Google Patents
Downdraft proofing blast cap of ventilation exhaust duct for buildings Download PDFInfo
- Publication number
- CN201521093U CN201521093U CN2009201612705U CN200920161270U CN201521093U CN 201521093 U CN201521093 U CN 201521093U CN 2009201612705 U CN2009201612705 U CN 2009201612705U CN 200920161270 U CN200920161270 U CN 200920161270U CN 201521093 U CN201521093 U CN 201521093U
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- blast cap
- described blast
- cap
- supporting plate
- cover plate
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Abstract
The utility model discloses a downdraft proofing blast cap of a ventilation exhaust duct for buildings. The downdraft proofing blast cap comprises an upright support column arranged on a blast cap support board which is arranged at an outlet of a circumferential ventilation duct. The upper end of the support column is provided with a blast cap cover board, and a horizontal airflow passage is formed between the blast cap cover board and the blast cap support board, and a downdraft proofing guide body is formed on the lower portion of the blast cap cover board. The downdraft proofing blast cap is characterized in that the lower portions of edges of the blast cap cover board and the blast cap support board are respectively annularly provided with a drip groove capable of preventing rainwater from entering the horizontal airflow passage. The downdraft proofing blast cap has simple structure and is capable of effectively preventing the rainwater from entering the horizontal exhaust passage.
Description
Technical field
The utility model relates to device in the building exhast duct, particularly relates to building vented exhaust road preventing air reverse flow cap.
Background technology
Air outlet position in the building vented exhaust channel roof, the anti-blast cap that pours in down a chimney will be installed usually, its structure mainly is: on the supporting plate around the ventilation stack outlet, be provided with the support column that erects, above the ventilation stack outlet, be provided with the top cover that is fixed on the support column, form the horizontal gas flow passage between top cover and the supporting plate, be provided with baffle in the horizontal gas flow passage and make air-flow be the narrowest part in center all around to the shape of expanding.The effect one of blast cap is can shading wind and rain, the 2nd, owing to flow through level to the air-flow of gas channel in the centre the flow velocity at narrow place accelerate to form negative pressure, can play the effect that prevents that air-flow from pouring in down a chimney, the weak point of this spline structure is, because when top cover and splint upper surface level, meeting inflow level did not have the effect of good screening rain after rainwater flowed down in gas channel.
Summary of the invention
The utility model is finished in order to solve deficiency of the prior art, the purpose of this utility model provide a kind of can be simple in structure, prevent that rainwater from entering the building vented exhaust road preventing air reverse flow cap in the horizontal exhaust passage.
Building vented exhaust of the present utility model road preventing air reverse flow cap, the blast cap supporting plate that is included in around the ventilation stack outlet is provided with upright support column, the upper end of described support column is provided with the blast cap cover plate, form the horizontal gas flow passage between described blast cap cover plate and the described blast cap supporting plate, described blast cap cover plate bottom is formed with prevents pouring in down a chimney baffle, and it is characterized in that: described blast cap cover plate and described blast cap supporting plate edge lower part all are equipped with and prevent that rainwater from entering the drip of described horizontal gas flow passage.
Building vented exhaust of the present utility model road preventing air reverse flow cap can also be:
The size of described blast cap cover plate is greater than the size of described blast cap supporting plate.
The anti-baffle that pours in down a chimney that described blast cap cover plate bottom is shaped is shaped as protruding circular arc or taper shape.
Described blast cap supporting plate is fixed on the blast cap pedestal.
Be equipped with on described blast cap pedestal, blast cap supporting plate, support column and the described blast cap cover plate to reserve and wear reinforced hole, a reinforcing bar passes and after reinforced hole is worn in described each reservation described blast cap supporting plate is fixed on the described blast cap pedestal.
Form step between described blast cap supporting plate inwall and the described blast cap base internal wall.
Described blast cap cover plate is provided with top cover, and is high low on every side in the middle of the described top cover.
Described ventilation stack cross section is square.
Building vented exhaust of the present utility model road preventing air reverse flow cap, in terms of existing technologies, because its blast cap cover plate and blast cap supporting plate edge lower part all are equipped with and prevent that rainwater from entering the drip of horizontal gas flow passage, rainwater is discharged outside supporting plate and the cover plate along drip like this, can not enter in the horizontal air exhaust passage.Simultaneously because the blast cap supporting plate that is included in around the ventilation stack outlet is provided with upright support column, the upper end of support column is provided with the blast cap cover plate, form the horizontal gas flow passage between blast cap cover plate and the blast cap supporting plate, blast cap cover plate bottom is formed with prevents pouring in down a chimney baffle, so have anti-function of pouring in down a chimney.
Description of drawings
Fig. 1 the utility model building vented exhaust road preventing air reverse flow cap partly cuts open figure.
A-A sectional view among Fig. 2 the utility model building vented exhaust road preventing air reverse flow cap Fig. 1.
B-B sectional view among Fig. 3 the utility model building vented exhaust road preventing air reverse flow cap figure Fig. 1.
The figure number explanation
1 ... blast cap cover plate 2 ... blast cap supporting plate 3 ... support column
4 ... drip 5 ... baffle 6 ... the ventilation stack outlet
7 ... blast cap pedestal 8 ... horizontal gas flow passage 9 ... reinforcing bar
10 ... reinforced hole 11 is worn in reservation ... top cover
The specific embodiment
Be described in further detail below in conjunction with accompanying drawing Fig. 1 to Fig. 3 building vented exhaust of the present utility model road preventing air reverse flow cap.
Building vented exhaust of the present utility model road preventing air reverse flow cap, please refer to Fig. 1 to Fig. 3, the blast cap supporting plate 2 that is included in around ventilation stack outlet 6 is provided with upright support column 3, the upper end of support column 3 is provided with blast cap cover plate 1, support column 3 makes and form certain distance between blast cap supporting plate 2 and blast cap cover plate 1, guarantee between blast cap cover plate 1 and blast cap supporting plate 2, to form horizontal gas flow passage 8, blast cap cover plate 1 bottom is formed with the anti-baffle 5 that pours in down a chimney, prevent that the baffle 5 that pours in down a chimney from can prevent effectively that gas from pouring in down a chimney, blast cap cover plate 1 all is equipped with blast cap supporting plate 2 edge lower part and prevents that rainwater from entering the drip 4 of horizontal gas flow passage 8.Like this, the rainwater of all directions will flow in the drip 4 after on dropping to blast cap supporting plate 2 and blast cap cover plate 1, and finally drops down onto the outside of blast cap supporting plate 2 and blast cap cover plate 1, prevents that effectively rainwater from flowing in the horizontal gas flow passages 8 along baffle 5.
Building vented exhaust of the present utility model road preventing air reverse flow cap please refer to Fig. 1 to Fig. 3, can also be the size of the size of blast cap cover plate 1 greater than blast cap supporting plate 2.Such structure guarantees the better effects if that whole building vented exhaust road preventing air reverse flow cap protects from the wind and rain.In addition, the anti-baffle 5 that pours in down a chimney of blast cap cover plate 1 bottom shaping is shaped as protruding circular arc or taper shape.Such structure makes between blast cap cover plate 1 and the blast cap supporting plate 2 in the middle of being shaped as of the horizontal gas flow passage 8 that forms narrow, on every side than broad, spread towards periphery by the centre, air-flow in the process of discharging because middle narrow, so the flow velocity in the middle of flowing through is big, forms negative pressure and prevent that gas from pouring in down a chimney.And the advantage of the taper shape of projection or circular arc is to be shaped than being easier to, and reduces production costs.
Building vented exhaust of the present utility model road preventing air reverse flow cap please refer to Fig. 1, and further blast cap supporting plate 2 is fixed on the blast cap pedestal 7.So fixedly make blast cap more firmly can not drop easily.Concrete structure is to be equipped with on blast cap pedestal 7, blast cap supporting plate 2, support column 3 and the blast cap cover plate 1 to reserve to wear reinforced hole 10, one reinforcing bars 9 and pass each and reserve and blast cap supporting plate 2 is fixed on the blast cap pedestal 7 after wearing reinforced hole 10.One end of reinforcing bar 9 exposes blast cap cover plate 1 top, and the other end of reinforcing bar 9 is positioned at blast cap pedestal 7, like this as long as after reinforcing bar 9 is fixed on blast cap cover plate 1 top, just on the blast cap pedestal 7 that the blast cap supporting plate 2 and the blast cap cover plate 1 of integral body can be fixed on building.Form step between blast cap supporting plate 2 inwalls and blast cap pedestal 7 inwalls.Such ledge structure had both helped preventing that air-flow from pouring in down a chimney, and was shaped than being easier in manufacturing process simultaneously.
Building vented exhaust of the present utility model road preventing air reverse flow cap please refer to Fig. 1 to Fig. 3, and further, blast cap cover plate 1 is provided with top cover 11, and is high low on every side in the middle of the top cover 11.Like this, make rainwater can not concentrate on the centre of blast cap cover plate 1, further prevent in the horizontal exhaust passage of rainwater inflow.In addition, the ventilation stack cross section is square, and its advantage is saved material for being shaped easily, saves the space, reduces cost.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence variation of having done according to the design spirit in the utility model or modification or equal proportion are amplified or are dwindled etc., all should think to fall into protection domain of the present utility model.
Claims (8)
1. building vented exhaust road preventing air reverse flow cap, the blast cap supporting plate that is included in around the ventilation stack outlet is provided with upright support column, the upper end of described support column is provided with the blast cap cover plate, form the horizontal gas flow passage between described blast cap cover plate and the described blast cap supporting plate, described blast cap cover plate bottom is formed with prevents pouring in down a chimney baffle, and it is characterized in that: described blast cap cover plate and described blast cap supporting plate edge lower part all are equipped with and prevent that rainwater from entering the drip of described horizontal gas flow passage.
2. building vented exhaust according to claim 1 road preventing air reverse flow cap, it is characterized in that: the size of described blast cap cover plate is greater than the size of described blast cap supporting plate.
3. building vented exhaust according to claim 1 and 2 road preventing air reverse flow cap is characterized in that: the anti-baffle that pours in down a chimney that described blast cap cover plate bottom is shaped is shaped as protruding circular arc or taper shape.
4. building vented exhaust according to claim 3 road preventing air reverse flow cap is characterized in that: described blast cap supporting plate is fixed on the blast cap pedestal.
5. building vented exhaust according to claim 4 road preventing air reverse flow cap, it is characterized in that: be equipped with on described blast cap pedestal, blast cap supporting plate, support column and the described blast cap cover plate to reserve and wear reinforced hole, a reinforcing bar passes and after reinforced hole is worn in described each reservation described blast cap supporting plate is fixed on the described blast cap pedestal.
6. building vented exhaust according to claim 5 road preventing air reverse flow cap is characterized in that: form step between described blast cap supporting plate inwall and the described blast cap base internal wall.
7. building vented exhaust according to claim 3 road preventing air reverse flow cap is characterized in that: described blast cap cover plate is provided with top cover, and is high low on every side in the middle of the described top cover.
8. building vented exhaust according to claim 1 and 2 road preventing air reverse flow cap is characterized in that: described ventilation stack cross section is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201612705U CN201521093U (en) | 2009-07-20 | 2009-07-20 | Downdraft proofing blast cap of ventilation exhaust duct for buildings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201612705U CN201521093U (en) | 2009-07-20 | 2009-07-20 | Downdraft proofing blast cap of ventilation exhaust duct for buildings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521093U true CN201521093U (en) | 2010-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201612705U Expired - Fee Related CN201521093U (en) | 2009-07-20 | 2009-07-20 | Downdraft proofing blast cap of ventilation exhaust duct for buildings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521093U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677871A (en) * | 2012-05-29 | 2012-09-19 | 贵阳维德环保板材有限公司 | Unpowered high-efficiency flue gas exhausting funnel cap and production process thereof |
| CN103485518A (en) * | 2012-06-13 | 2014-01-01 | 张琦 | Drafting exhaust hood |
| CN106642495A (en) * | 2016-11-18 | 2017-05-10 | 济南舜景医药科技有限公司 | High-rise building capable of reducing and purifying haze |
| CN108590108A (en) * | 2018-03-27 | 2018-09-28 | 重庆大学 | Natural draught system device under Venturi effect invigoration effect |
| CN112942733A (en) * | 2021-02-01 | 2021-06-11 | 联知(北京)技术服务有限公司 | Wind cap |
-
2009
- 2009-07-20 CN CN2009201612705U patent/CN201521093U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677871A (en) * | 2012-05-29 | 2012-09-19 | 贵阳维德环保板材有限公司 | Unpowered high-efficiency flue gas exhausting funnel cap and production process thereof |
| CN102677871B (en) * | 2012-05-29 | 2014-07-23 | 贵阳维德环保板材有限公司 | Unpowered high-efficiency flue gas exhausting funnel cap and production process thereof |
| CN103485518A (en) * | 2012-06-13 | 2014-01-01 | 张琦 | Drafting exhaust hood |
| CN103485518B (en) * | 2012-06-13 | 2016-06-08 | 张琦 | Pull out gas Wind discharging hat |
| CN106642495A (en) * | 2016-11-18 | 2017-05-10 | 济南舜景医药科技有限公司 | High-rise building capable of reducing and purifying haze |
| CN108590108A (en) * | 2018-03-27 | 2018-09-28 | 重庆大学 | Natural draught system device under Venturi effect invigoration effect |
| CN108590108B (en) * | 2018-03-27 | 2019-11-26 | 重庆大学 | Natural draught system device under Venturi effect invigoration effect |
| CN112942733A (en) * | 2021-02-01 | 2021-06-11 | 联知(北京)技术服务有限公司 | Wind cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20170720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |