CN2689103Y - Anti-backward flowing negative pressure ballistic cap - Google Patents
Anti-backward flowing negative pressure ballistic cap Download PDFInfo
- Publication number
- CN2689103Y CN2689103Y CN 200420048225 CN200420048225U CN2689103Y CN 2689103 Y CN2689103 Y CN 2689103Y CN 200420048225 CN200420048225 CN 200420048225 CN 200420048225 U CN200420048225 U CN 200420048225U CN 2689103 Y CN2689103 Y CN 2689103Y
- Authority
- CN
- China
- Prior art keywords
- chimney
- circular arc
- cover plate
- blast cap
- suction type
- 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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- Exhaust Silencers (AREA)
Abstract
The utility model belongs to a funnel cap provided at the outlet of the top end of a vertical exhaust passage of a residential housing. The utility model is suitable for the funnel cap at the outlet of the exhaust passage of all kinds of residential housings and is also suitable for the funnel cap at the exhaust outlet of the indoor space and the space for activity where needs ventilating. The funnel cap can prevent the back-ward flowing of wind, rain and snow and the dust falling in the exhaust duct. The utility model can make use of the anti-down-draught board cone and the flow guiding circular arc arranged on the anti-rain cover board to form a narrow wind passage, and under the action of the external wind, making use of the Bernoulli equation theory to generate negative pressure effect to effectively assist the exhaust passage to exhaust air. The funnel cap features that the anti-rain cover board, the flow guiding circular arc, the conic anti-down-draught board with a conical bore, a column and a steel board net form the anti-backward flowing negative pressure funnel cap. The utility model has a simple structure and low cost.
Description
Affiliated technical field
The utility model belongs to house kitchen, vertical exhaust duct top, toilet outlet blast cap.Be suitable for all kinds residence building exhaust duct outlet blast cap, also be applicable to office work space and activity space, need ventilation place exhaust outlet blast cap.
Background technology
At present, flue gas often takes place and pours in down a chimney to indoor phenomenon owing to often disturbed by wind-force in known common blast cap, influences exhaust effect; Rain also often takes place common blast cap, snow pours in down a chimney with foreign material falls in the exhaust duct and to take place to stop up and smash the internal structure phenomenon, and common blast cap can not produce underbalance effect, assists the exhaust duct exhaust.
Summary of the invention
1. the purpose of this utility model is: provide a kind of and can produce underbalance effect, help the exhaust duct exhaust ventilation, the criminal of preventing is air-dry to be disturbed, and prevents that rain, snow from pouring in down a chimney, and prevents the anti-suction type blast cap that pours in down a chimney that foreign material are fallen into.
2. the technical solution of the utility model is: design a kind of anti-suction type blast cap that pours in down a chimney that narrow air channel is arranged, it is characterized in that: it is by rainproof cover plate, and water conservancy diversion circular arc body, anti-down aerofoil, pillar, expanded metal lath constitute.Its structure (seeing accompanying drawing) is: the rainproof cover plate of band water conservancy diversion circular arc body is the umbrella shape cover plate, covers the passage that shelters from the anti-down aerofoil with its umbrella shape, prevents that rain, snow from pouring in down a chimney, corrosion exhaust duct internal structure; Between rainproof cover plate and the water conservancy diversion circular arc body, with giving (φ 12) reinforcing bar that is embedded on the water conservancy diversion circular arc body, pass rainproof cover plate, the welding baffle plate is fixed; Anti-down aerofoil is the cone of band boss, and taper hole is opened in the center, and its hole Bottom Shape is consistent with the exhaust duct orifice shapes; Lay expanded metal lath below the anti-down aerofoil, be placed on the revetment of exhaust duct; Stretch out the pillar of reinforcing bar with two ends, rainproof cover plate and the anti-down aerofoil of band boss cone with band water conservancy diversion circular arc body are fixed on the revetment of exhaust duct, are combined into the complete anti-suction type blast cap that pours in down a chimney.
3. characteristics of the present utility model are: the rainproof cover plate of band water conservancy diversion circular arc body and the anti-down aerofoil of band boss cone, be combined into the whole anti-suction type blast cap that pours in down a chimney, form the ventilating duct of tubaeform gradual change between two parallel-plates, water conservancy diversion circular arc body center is consistent with boss cone center and the distance top is the shortest, the flow area minimum, according to hydrodynamics Bernoulli equation principle, the flow velocity maximum can produce the several times high velocity air herein, and the air-flow ambient pressure is reduced, exhaust ports pressure reduces, generation promptly forms underbalance effect with respect to the pressure differential in the exhaust duct, thereby produces the swabbing in the exhaust duct, gas in the exhaust duct is risen rapidly, discharge exhaust duct.Extraneous wind speed is big more, and pressure is more little, and pressure differential is big more, and the negative pressure appearance of formation is also obvious more, and the suction force in the exhaust duct is also big more, and flue gas just can be emitted more smoothly, can not produce and pour in down a chimney phenomenon.Center drilling links to each other with gas-discharging channel hole on the anti-down aerofoil, and it is simple in structure.
4. the beneficial effects of the utility model are: need not any exterior power source and mechanical device, no matter wind is in any direction blown over, and can both produce pressure differential, forms underbalance effect, produces suction force, assists the exhaust duct exhaust, is the desirable blast caps of all exhaust duct outlets.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the example structure schematic diagram.
Among the figure: 1. rainproof cover plate 2. water conservancy diversion circular arc bodies 3. anti-down aerofoil 4. pillars 5. expanded metal laths
Rainproof cover plate 1 is the umbrella shape plate, will give the reinforcing bar (φ 12) that is embedded on the water conservancy diversion circular arc body 2 thereon earlier, passes rainproof cover plate, with the baffle plate welding, is fixed together; The anti-down aerofoil 3 of band boss cone, its hole is consistent with the gas-discharging channel hole center, stretches out the pillar 4 of reinforcing bar with the band two ends, passes rainproof cover plate 1 and anti-down aerofoil 3 and expanded metal lath 5, and fixes in the insertion exhaust duct revetment hole.
The specific embodiment
1. embodiment 1: on the circumferential edge of the bottom surface of water conservancy diversion circular arc body 2, give and bury 4 reinforcing bars, this reinforcing bar is passed the rainproof cover plate of umbrella shape 1 hole after, the welding baffle plate gives in conjunction with fixing; Anti-down aerofoil 3, by the reinforcing bar that stretch out at pillar 4 two ends, after rainproof cover plate 1 was passed in its upper end, the welding plate washer was fixed, and anti-down aerofoil 3 is passed in the lower end, and expanded metal lath 5 backs of stretching on the revetment are fixing, form the anti-suction type blast cap that pours in down a chimney of the narrow ventilating duct of gradual change.
2. execute mode 2 in accompanying drawing embodiment, (φ 14) reinforcing bar that stretch out at pillar 4 two ends, after rainproof cover plate 1 hole that water conservancy diversion circular arc body 2 is installed is passed in its upper end, the welding baffle plate is in conjunction with fixing, after the anti-down aerofoil 3 that has the boss cone is passed in the lower end, insert in the exhausting duct revetment and fix, promptly form narrow ventilating duct.
3. embodiment 3: in accompanying drawing embodiment, with 4 (φ 12) reinforcing bars that give being embedded on water conservancy diversion circular arc body 2 circumferential edge, pass rainproof cover plate 1 after, the welding baffle plate fix.
4. embodiment 4: in accompanying drawing embodiment, umbrella shape with a slope edge is made at rainproof cover plate 1 edge.
5. embodiment 5: in accompanying drawing embodiment, anti-down aerofoil 3 is made the flat board of plane and boss cone, and cone is opened taper hole and played a boss, the taper hole of its Kong Weiyu exhaust duct orifice shapes unanimity.
6. embodiment 6: in accompanying drawing embodiment, expanded metal lath is laid in the bottom surface of anti-down aerofoil 3, is placed on the exhaust duct revetment.
7. embodiment 7: in accompanying drawing embodiment, in circular cement pillar 4, insert (φ 12) reinforcing bar, the length on cement pillar 4 surfaces is stretched out in the upper end, for thickness of slab adds 5 millimeters, cement pillar 4 length surfaces are stretched out in the lower end, stretch in the revetment hole 120 millimeters of length for thickness of slab adds.
8. execute mode 8: in accompanying drawing embodiment, water conservancy diversion circular arc body 2 center lines and anti-down aerofoil 3 convex platform cone center lines are on same center line, and its cross sectional shape is loudspeaker gradual change shape, and the distance at top is minimum, the edge maximum.
Claims (8)
1. the anti-suction type blast cap that pours in down a chimney, it is characterized in that: rainproof cover plate, the protruding circular arc body of water conservancy diversion, anti-down aerofoil, pillar, expanded metal lath are formed, fixedly connected with the protruding circular arc body circumference of water conservancy diversion below the rainproof cover plate, anti-down aerofoil is combined into the anti-suction type blast cap that pours in down a chimney by pillar and the rainproof cover plate that assembles the protruding circular arc body of water conservancy diversion.
2. according to claim 1ly anti-pour in down a chimney the suction type blast cap and it is characterized in that: fix with pillar between rainproof cover plate and the anti-down aerofoil, the formation cross section is narrow ventilating duct.
3. according to claim 1ly anti-pour in down a chimney the suction type blast cap and it is characterized in that: with giving the reinforcing bar that is embedded in the protruding circular arc body of water conservancy diversion, pass rainproof cover plate between the protruding circular arc body of rainproof cover plate and water conservancy diversion, weld baffle plate and fix.
4. according to claim 1ly anti-pour in down a chimney the suction type blast cap and it is characterized in that: the umbrella shape cover plate that the edge is gradient.
5. according to claim 1ly anti-pour in down a chimney the suction type blast cap and it is characterized in that: make band boss cone on anti-down aerofoil, open taper hole on the cone, its hole Bottom Shape is consistent with the exhaust duct orifice shapes.
6. according to claim 1ly anti-pour in down a chimney the suction type blast cap and it is characterized in that: expanded metal lath is laid when mounted in anti-down aerofoil bottom surface.
7. according to claim 1ly anti-pour in down a chimney the suction type blast cap and it is characterized in that: pillar is the cement cylinder that reinforcing bar is stretched out at two ends, and rainproof cover plate is stretched out in elongation reinforcing bar upper end, and the welding baffle plate is fixed, and in the insert row air flue revetment hole, lower end, uses cemented.
8. prevent that according to claim 1,2,3,4,5,6,7 pouring in down a chimney the suction type blast cap is characterized in that: described water conservancy diversion protruding circular arc body center and anti-down aerofoil convex platform cone center, on same axis, its cross sectional shape is loudspeaker gradual change shape, along with the increase apart from distance between center line of the protruding circular arc body of water conservancy diversion and cone, its spacing also increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420048225 CN2689103Y (en) | 2004-04-12 | 2004-04-12 | Anti-backward flowing negative pressure ballistic cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420048225 CN2689103Y (en) | 2004-04-12 | 2004-04-12 | Anti-backward flowing negative pressure ballistic cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689103Y true CN2689103Y (en) | 2005-03-30 |
Family
ID=34672165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420048225 Expired - Fee Related CN2689103Y (en) | 2004-04-12 | 2004-04-12 | Anti-backward flowing negative pressure ballistic cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689103Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104105A (en) * | 2012-12-13 | 2013-05-15 | 朱春梅 | Ventilating board room |
| CN103457178A (en) * | 2013-08-23 | 2013-12-18 | 江苏常明电力设备有限公司 | High heat dissipation outdoor electric cabinet |
| CN104696976A (en) * | 2015-03-09 | 2015-06-10 | 李森昌 | Downwind cap |
| CN105091180A (en) * | 2015-02-02 | 2015-11-25 | 江苏华顶建设工程股份有限公司 | Air exhaust system for operating room |
| CN106461250A (en) * | 2014-06-09 | 2017-02-22 | 李英姫 | Ventilation unit |
| CN106958911A (en) * | 2017-02-28 | 2017-07-18 | 东南大学 | A kind of powerless ventilation device |
| CN107023930A (en) * | 2017-04-28 | 2017-08-08 | 北京百度网讯科技有限公司 | Exhaust system applied to data center |
| CN108124609A (en) * | 2017-12-21 | 2018-06-08 | 安徽华宇机械制造有限公司 | A kind of unidirectional air port of silo |
| CN109260887A (en) * | 2018-11-26 | 2019-01-25 | 南安市泉建机械科技有限公司 | A kind of power plant desulfurization device of the acceleration outlet suitable for rainy day |
| CN109914747A (en) * | 2019-03-30 | 2019-06-21 | 单简 | House exhaust passage reverse-filling Wind discharging hat |
| CN111819400A (en) * | 2018-04-27 | 2020-10-23 | 朴泰业 | Unpowered ventilation part |
| CN112942733A (en) * | 2021-02-01 | 2021-06-11 | 联知(北京)技术服务有限公司 | Wind cap |
| CN114608098A (en) * | 2022-03-24 | 2022-06-10 | 河南三建建设集团有限公司 | Strong wind-resistant clear water concrete funnel cap |
-
2004
- 2004-04-12 CN CN 200420048225 patent/CN2689103Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104105A (en) * | 2012-12-13 | 2013-05-15 | 朱春梅 | Ventilating board room |
| CN103457178A (en) * | 2013-08-23 | 2013-12-18 | 江苏常明电力设备有限公司 | High heat dissipation outdoor electric cabinet |
| CN106461250A (en) * | 2014-06-09 | 2017-02-22 | 李英姫 | Ventilation unit |
| CN105091180A (en) * | 2015-02-02 | 2015-11-25 | 江苏华顶建设工程股份有限公司 | Air exhaust system for operating room |
| CN104696976A (en) * | 2015-03-09 | 2015-06-10 | 李森昌 | Downwind cap |
| CN106958911A (en) * | 2017-02-28 | 2017-07-18 | 东南大学 | A kind of powerless ventilation device |
| CN107023930A (en) * | 2017-04-28 | 2017-08-08 | 北京百度网讯科技有限公司 | Exhaust system applied to data center |
| CN108124609A (en) * | 2017-12-21 | 2018-06-08 | 安徽华宇机械制造有限公司 | A kind of unidirectional air port of silo |
| CN111819400B (en) * | 2018-04-27 | 2021-08-06 | 朴泰业 | Unpowered ventilation part |
| CN111819400A (en) * | 2018-04-27 | 2020-10-23 | 朴泰业 | Unpowered ventilation part |
| CN109260887A (en) * | 2018-11-26 | 2019-01-25 | 南安市泉建机械科技有限公司 | A kind of power plant desulfurization device of the acceleration outlet suitable for rainy day |
| CN109914747A (en) * | 2019-03-30 | 2019-06-21 | 单简 | House exhaust passage reverse-filling Wind discharging hat |
| CN109914747B (en) * | 2019-03-30 | 2024-04-26 | 单简 | Anti-backflow exhaust cap for residential exhaust passage |
| CN112942733A (en) * | 2021-02-01 | 2021-06-11 | 联知(北京)技术服务有限公司 | Wind cap |
| CN114608098A (en) * | 2022-03-24 | 2022-06-10 | 河南三建建设集团有限公司 | Strong wind-resistant clear water concrete funnel cap |
| CN114608098B (en) * | 2022-03-24 | 2023-03-28 | 河南三建建设集团有限公司 | Strong wind-resistant clear water concrete funnel cap |
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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 |