CN2378669Y - Pressure variation antibacking ward ventilating passage - Google Patents
Pressure variation antibacking ward ventilating passage Download PDFInfo
- Publication number
- CN2378669Y CN2378669Y CN 99240505 CN99240505U CN2378669Y CN 2378669 Y CN2378669 Y CN 2378669Y CN 99240505 CN99240505 CN 99240505 CN 99240505 U CN99240505 U CN 99240505U CN 2378669 Y CN2378669 Y CN 2378669Y
- Authority
- CN
- China
- Prior art keywords
- exhaust duct
- top board
- base plate
- blast cap
- gas
- 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 - Lifetime
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model relates to a pressure variation back flow preventive gas exhausting channel which is characterized in that at least a wind cap of a flow guide lower cone is fixed at a gas outlet of the gas exhausting channel. The utility model can prevent the back flow of natural wind, and gas curtains formed by the downward bounce of rising gas flows, decrease frictional resistance when rising flue gas flows out a wind cap port, raise the ventilating performance of the gas exhausting channel, and guarantee the environmental sanitation in houses.
Description
The utility model relates to kitchen, washroom or its shared exhaust duct of floor house.
The exhaust duct blast cap structure that existing floor house is used is all very simple, often on the gas outlet of exhaust duct, add a plane caping exactly, wall is windowed and is the gas outlet, though it is easy to process, but extraneous natural wind to pour in down a chimney phenomenon serious, having part behind the airflow strikes plane caping that rises from lower to upper in the blast cap again rebounds and flows downward, form the air curtain of influence, obstruction ascending air, be exactly the gas that flows into atmosphere by blast cap, the frictional resistance that is subjected to when flowing out blast cap is big, and flow velocity reduces and influences the flow of exhaust duct ascending air.These cause all that the exhaust of each tame kitchen, washroom has some setbacks, flue gas, waste gas are difficult to discharge even pour in down a chimney, and have influenced the sanitation of environment of premises.
The purpose of this utility model provides the anti-exhaust duct that pours in down a chimney of transformation, can prevent that natural wind from pouring in down a chimney and the ascending air bounce-back is downward and the air curtain of formation, frictional resistance in the time of reducing ascending air and go out blast cap improves the draught capacity of exhaust duct, guarantees the sanitation of environment of premises.
Technical solution of the present utility model is on the basis of the exhaust duct of existing floor house, and the utility model particularly is fixed with the blast cap of boring under the water conservancy diversion at least at place, exhaust duct gas outlet.
The above blast cap that is fixed with awl under the water conservancy diversion has base plate parallel to each other and separated by a distance and top board, the perforate that adapts with the exhaust duct internal diameter is arranged on the base plate, the place is a side plate at the blast cap circumference, the interval of a gas channel is arranged between side plate and base plate and the top board and fix with it, the top of side plate is higher than top board, the lower end is lower than base plate, is fixed with a cone down below top board.
Side plate described in the utility model is being higher than the part of top board, and the part that is lower than base plate, is outwards tiltedly to stretch and form the horn mouth wall that reaches up down.
Above the utility model is fixed with the blast cap of boring under the water conservancy diversion at least at place, exhaust duct gas outlet, is meant in cover top surface also can be fixed with a cone up simultaneously.
Operating principle of the present utility model is that the blast cap of locating in the gas outlet, upper end of exhaust duct is by forming the flue gas flow-guiding channel between top board, base plate and the lower cone.By forming up big and down small taper type passage between top board, upper cone and the side plate.Form up-small and down-big taper type passage between base plate, exhaust duct outer wall and the side plate, the taper type passage intersects at smallest cross-sectional place and flue gas flow-guiding channel.When flue gas when exhaust duct flows out, guide effect by means of lower cone, flowing of flue gas changes horizontal direction into sleekly by vertical direction, and along with actual internal area increases gradually, the flow velocity of flue gas reduces gradually, at last, the low speed flue gas flows to extraneous from the taper type passage between side plate and top board and side plate and the base plate.Outside in the exhaust duct gas outlet, flowing of natural wind can be divided into horizontal direction and two vectors of vertical direction, when the vertical vector of natural wind flows through blast cap from top to bottom or from the bottom up, because flowing through the sectional area of taper type passage, reduces gradually natural wind, flow velocity is inevitable to be increased gradually, when the intersection that arrives with the flue gas flow-guiding channel, the sectional area minimum of taper type passage, the flow velocity of natural wind is also maximum, learn that according to the Bernoulli equation that fluid flows natural wind is minimum at the pressure of this intersection, therefore increased the inside and outside pressure differential of flue gas flow-guiding channel, play the effect that utilizes natural wind suction flue gas, prevent to pour in down a chimney phenomenon and take place.As a same reason, when the horizontal vector of natural wind under the side plate barrier effect, respectively when the blast cap top and bottom are flow through, flow velocity will increase, the pressure that also certainly will cause the upper and lower port of blast cap descends, and also plays swabbing action for flue gas, prevents to pour in down a chimney phenomenon and takes place.
The utility model has the advantages that to prevent that natural wind from pouring in down a chimney, and eliminate the ascending air bounce-back and the air curtain that forms downwards that the frictional resistance in the time of reducing ascending air and go out blast cap improves the draught capacity of exhaust duct, guarantees the sanitation of environment of premises.
Below in conjunction with accompanying drawing embodiment of the present utility model is described:
Fig. 1 organigram of the present utility model.
According to shown in Figure 1, the utility model has exhaust duct 6, at least be fixed with the blast cap of awl 3 under the water conservancy diversion at the place, gas outlet of exhaust duct 6, the blast cap that is fixed with awl 3 under the water conservancy diversion has base plate parallel to each other and separated by a distance 5 and top board 1, the perforate that adapts with the exhaust duct internal diameter is arranged on the base plate 5, the place is a side plate 4 at the blast cap periphery, the interval of a gas channel is arranged between side plate 4 and base plate 5 and the top board 1 and fix with it, the top of side plate 4 is higher than top board 1, the lower end is lower than base plate 5, is fixed with a cone 3 down below top board 1.Side plate 4 is in the part that is higher than top board 1, and the part that is lower than base plate 5, be outwards tiltedly stretch and form reach up horn mouth wall down.The utility model is meant at top board 1 upper surface also to be fixed with a cone 2 up simultaneously at the blast cap that place, exhaust duct gas outlet is fixed with awl 3 under the water conservancy diversion at least.
Claims (4)
1, transformation is anti-pours in down a chimney exhaust duct, comprises exhaust duct (6), it is characterized in that being fixed with at least at the place, gas outlet of exhaust duct (6) blast cap of awl (3) under the water conservancy diversion.
2, the anti-exhaust duct that pours in down a chimney of transformation according to claim 1, the blast cap that it is characterized in that being fixed with awl (3) under the water conservancy diversion has base plate parallel to each other and separated by a distance (5) and top board (1), the perforate that adapts with exhaust duct (6) internal diameter is arranged on the base plate (5), the place is side plate (4) at the blast cap periphery, between side plate (4) and base plate (5) and the top board (1) interval of a gas channel is arranged and fix with it, the top of side plate (4) is higher than top board (1), the lower end is lower than base plate (5), is fixed with a cone (3) down below top board (1).
3, transformation according to claim 1 and 2 is anti-pours in down a chimney exhaust duct, it is characterized in that side plate (4) in the part that is higher than top board (1), and the part that is lower than base plate (5), is outwards tiltedly to stretch and form the horn mouth wall that reaches up down.
4, transformation according to claim 1 is anti-pours in down a chimney exhaust duct, it is characterized in that being fixed with at least at the place, gas outlet of exhaust duct (6) blast cap of awl (3) under the water conservancy diversion, is meant at top board (1) upper surface and also can fixes a cone (2) up simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99240505 CN2378669Y (en) | 1999-10-15 | 1999-10-15 | Pressure variation antibacking ward ventilating passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99240505 CN2378669Y (en) | 1999-10-15 | 1999-10-15 | Pressure variation antibacking ward ventilating passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2378669Y true CN2378669Y (en) | 2000-05-17 |
Family
ID=34027535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99240505 Expired - Lifetime CN2378669Y (en) | 1999-10-15 | 1999-10-15 | Pressure variation antibacking ward ventilating passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2378669Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346046C (en) * | 2004-11-19 | 2007-10-31 | 吴汉木 | Antiback component of exhaust duct |
| CN101799167A (en) * | 2010-04-08 | 2010-08-11 | 钮长宏 | Air-outlet windproof and energy-saving device |
| CN102031859A (en) * | 2011-01-05 | 2011-04-27 | 秦德进 | Fire-fighting exhaust safety channel system of house building |
| CN103512137A (en) * | 2012-06-18 | 2014-01-15 | 迪诺曼（苏州）科技服务有限公司 | Roof ventilation device for large-scale factory building |
| 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 |
| CN110966677A (en) * | 2019-11-08 | 2020-04-07 | 珠海格力电器股份有限公司 | Machine and air conditioner in air conditioning of reversible air supply |
-
1999
- 1999-10-15 CN CN 99240505 patent/CN2378669Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346046C (en) * | 2004-11-19 | 2007-10-31 | 吴汉木 | Antiback component of exhaust duct |
| CN101799167A (en) * | 2010-04-08 | 2010-08-11 | 钮长宏 | Air-outlet windproof and energy-saving device |
| CN102031859A (en) * | 2011-01-05 | 2011-04-27 | 秦德进 | Fire-fighting exhaust safety channel system of house building |
| CN102031859B (en) * | 2011-01-05 | 2015-01-14 | 秦德进 | Fire-fighting exhaust safety channel system of house building |
| CN103512137A (en) * | 2012-06-18 | 2014-01-15 | 迪诺曼（苏州）科技服务有限公司 | Roof ventilation device for large-scale factory building |
| CN103512137B (en) * | 2012-06-18 | 2015-12-16 | 迪诺曼（苏州）科技服务有限公司 | A kind of large-sized workshop roof ventilation device |
| 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 |
| CN110966677A (en) * | 2019-11-08 | 2020-04-07 | 珠海格力电器股份有限公司 | Machine and air conditioner in air conditioning of reversible air supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |