CN205746926U - A kind of smoke-backflow-proof device - Google Patents
A kind of smoke-backflow-proof device Download PDFInfo
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- CN205746926U CN205746926U CN201620656320.7U CN201620656320U CN205746926U CN 205746926 U CN205746926 U CN 205746926U CN 201620656320 U CN201620656320 U CN 201620656320U CN 205746926 U CN205746926 U CN 205746926U
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- Prior art keywords
- air guide
- curved
- surface structure
- smoke
- backflow
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Abstract
This utility model provides a kind of smoke-backflow-proof device, including the first air guide and second air guide with curved-surface structure.The bottom of the curved-surface structure of the first air guide is provided with the through hole that the exhaust opening with fume extractor is connected.The Basolateral of the Basolateral of the curved-surface structure of the first air guide and the curved-surface structure of the second air guide is relative, the curved-surface structure of the curved-surface structure of the first air guide and the second air guide forms diversion space, and the cross section of the vertical direction of diversion space is arcuation flaring by centre to two ends.Simple in construction, can effectively prevent the situation of falling cigarette from occurring in the case of strong wind and wind direction are unordered.
Description
Technical field
This utility model belongs to fume emission technical field, is specifically related to a kind of smoke-backflow-proof device.
Background technology
In north of China most area, the impact that the exhaust opening of unpowered stove fume extractor is discharged fume by wind is very big, by
Unordered in the size of wind-force and wind direction, often results in " cigarette " phenomenon of the exhaust opening of fume extractor, winter coal stove for heating
It is easy to run into different wind directions and produces the exhaust opening of fume extractor and fall cigarette, affect indoor environment, cause human upper airway
Discomfort, especially causes the biggest misery and induces relevant disease physical weakness personage, and serious conditions even can cause indoor occupant
Carbon monoxide poisoning.
Unpowered stove, for preventing the problem of falling cigarette, prior art exists general two class devices, and a widest class is to make
With threeway, effect is extremely limited, and the problem of falling cigarette solves the most very well；Another kind of can view from network, but because himself
Design feature contradict with value of the product, cause substantial amounts of logistics and cost of labor, it is impossible to really commercially promote, it is impossible to
Really enter into common people house and bring welfare to everybody.
Utility model content
This utility model aims to provide a kind of smoke-backflow-proof device, and simple in construction can be in the case of strong wind and wind direction be unordered
Effectively prevent the situation of falling cigarette from occurring.
For achieving the above object, this utility model provides a kind of smoke-backflow-proof device, including having the first of curved-surface structure
Air guide and the second air guide.The bottom of the curved-surface structure of described first air guide is provided with the exhaust opening with fume extractor
The through hole being connected.The Basolateral of the curved-surface structure of described first air guide and the curved-surface structure of described second air guide
Basolateral relative, the curved-surface structure of described first air guide forms water conservancy diversion with the curved-surface structure of described second air guide
Space, the cross section of the vertical direction of described diversion space is arcuation flaring by centre to two ends.
The flue gas that the exhaust opening of fume extractor is discharged is entered by the first air guide by the through hole of the first air guide
With second in the diversion space formed between air guide, due to the cross section of vertical direction of diversion space by centre to two ends
In arcuation flaring, so the outer Side Volume of diversion space is more than internal volume, in the case of calm, flue gas is along the second water conservancy diversion
The curved surface of component discharges, and when blowing air over, air-flow speed outside diversion space will be less than in diversion space
The speed of side, according to bernoulli principle:
p+1/2ρv2+ ρ gh=C
Wherein, p is the pressure of certain point in air-flow, and v is the flow velocity of this point of air-flow, and ρ is current density, and g is acceleration of gravity,
H is this place height, and C is a constant, say, that in an air flow system, flow velocity is the fastest, the pressure that air-flow produces
The least.When air enters into the inner side of diversion space from the outside of diversion space, speed increases, and pressure reduces, so the
The through hole of one air guide forms negative pressure, accelerates the discharge of flue gas.Owing to diversion space is not intended to direction, therefore this practicality is new
The smoke-backflow-proof device that type provides can effectively prevent the situation of falling cigarette from occurring in the case of strong wind and wind direction are unordered.
Preferably, also including that connecting cylinder, one end of described connecting cylinder are connected with the exhaust opening of described fume extractor, it is another
One end is connected with the through hole of described first air guide.
Preferably, described connecting cylinder and described first air guide are that one time punching molded or described connecting cylinder is welded in institute
State on the first air guide.
Preferably, described first air guide is the housing with curved-surface structure.
Preferably, described second air guide is to have the housing of curved-surface structure or have the hollow object of curved-surface structure.
Preferably, the curved-surface structure of the bottom of the curved-surface structure of described first air guide and described second air guide
The distance range of bottom, for described first air guide through hole diameter 2/8～3/8.
Preferably, between described first air guide and described second air guide, connection has several connecting rods.
Preferably, several described connecting rods are all by welding or rivet and described first air guide and described second water conservancy diversion
Component connects.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described.
Fig. 1 is the structural representation of the smoke-backflow-proof device of this utility model embodiment；
In accompanying drawing,
1 smoke-backflow-proof device
2 first air guides
3 second air guides
4 diversion spaces
5 connecting cylinders
6 connecting rods
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining this utility model, and it is not intended that to this utility model
Restriction.
Fig. 1 is the structural representation of the smoke-backflow-proof device 1 of this utility model embodiment, as it can be seen, this utility model is real
Execute the smoke-backflow-proof device 1 that example provides, including first air guide 2 and second air guide 3 with curved-surface structure.First water conservancy diversion
The bottom of the curved-surface structure of component 2 is provided with the through hole that the exhaust opening with fume extractor is connected.The curved surface knot of the first air guide 2
The Basolateral of the Basolateral of structure and the curved-surface structure of the second air guide 3 is relative, the curved-surface structure of the first air guide 2 with
The curved-surface structure of the second air guide 3 forms diversion space 4, the cross section of the vertical direction of diversion space 4 by centre to two ends in
Arcuation flaring.
The flue gas that the exhaust opening of fume extractor is discharged is entered by the first air guide by the through hole of the first air guide 2
In 2 and second diversion spaces 4 formed between air guide 3, due to diversion space 4 vertical direction cross section by centre to
Two ends are arcuation flaring, so the outer Side Volume of diversion space 4 is more than internal volume, in the case of calm, flue gas is along the
The curved surface of two air guides 3 discharges, and when blowing air over, air-flow speed outside diversion space 4 will be less than leading
Speed inside fluid space 4, according to bernoulli principle:
p+1/2ρv2+ ρ gh=C
Wherein, p is the pressure of certain point in air-flow, and v is the air-flow flow velocity at this point, and ρ is current density, and g is that gravity accelerates
Degree, h is this place height, and C is a constant, say, that in an air flow system, flow velocity is the fastest, and air-flow produces
Pressure is the least.When air enters into the inner side of diversion space 4 from the outside of diversion space 4, speed increases, and pressure reduces,
So the through hole of the first air guide 2 forms negative pressure, accelerate the discharge of flue gas.Owing to diversion space 4 is not intended to direction, therefore
Smoke-backflow-proof device 1 simple in construction that this utility model provides, can effectively prevent down cigarette in the case of strong wind and wind direction are unordered
Situation occurs.
The exhaust opening of fume extractor can directly through hole with the first air guide 2 be connected, due to different fume extractors
The possible size of exhaust opening differs or there may be through hole and is connected the situation of instability with the exhaust opening of fume extractor, therefore exists
Being provided with connecting cylinder 5 in the present embodiment, one end of this connecting cylinder 5 is connected with the exhaust opening of fume extractor, and its other end is with described
The through hole of the first air guide 3 is connected, and flue gas can be made to pass through connecting cylinder 5 and be directly entered diversion space 4, this connecting cylinder 5
Arrange and be more easy to realize stable connection, and can be according to its concrete specification of the different choice of the exhaust smoke hole of fume extractor.
Connecting cylinder 5 can pass through bolt and realize the connection of the through hole with the first air guide 2, but in order to be able to make flue gas complete
Portion enters diversion space 4, and in the present embodiment, connecting cylinder 5 and the first air guide 2 are one time punching molded or connecting cylinder 5 and first
Welding is elected in connection between air guide 2 as, can be prevented effectively from flue gas and leak between entrance diversion space 4, and once
Punch forming or welding all can realize being stably connected with and can effectively make flue gas to pass through connecting cylinder 5 completely into diversion space 4.
Owing to smoke-backflow-proof device 1 is for be placed on the exhaust opening of fume extractor, therefore weight is difficult to too big, so by first
Air guide 2 is set to the housing with curved-surface structure, such as dome shape housing, lighter weight, and can realize preferable technique effect.
Same, the quality of the second air guide 3 is not easy to the biggest, it is contemplated that the service condition of this smoke-backflow-proof device 1 is divided
Two kinds, one is to use in the horizontal direction, the i.e. first air guide 2 and the second air guide on same level height, this
Time the second air guide 3 also elected the housing with curved-surface structure as, such as hemispherical housing, lighter in weight；Another kind is perpendicular
Nogata is used up, and the i.e. second air guide 3 is positioned at the surface of the first air guide 2 and uses, now due to the second water conservancy diversion structure
The bottom of the curved-surface structure of part 3 down, if now the second air guide 3 still elects the housing with curved-surface structure as, then at rain
It time, will have hydrops in the housing of the second air guide 3, and cause weight to increase, and therefore, be set to the second air guide 3 to have
The hollow object of spherical structure, such as hemispherical hollow object, its top is closed area.So the structure of the second air guide 3 can
Select according to specifically used situation.
If the distance of the bottom of the curved-surface structure of the bottom of the curved-surface structure of the first air guide 2 and the second air guide 3
Excessive, then the centre of diversion space 4 is inconspicuous with the wind speed gap of both sides, is positioned at the pressure of the through hole of the first air guide 2
Inconspicuous with the gap of outside pressure, affect smoke-backflow-proof effect, if this is apart from too small, be likely to result in the exhaust opening of fume extractor
The flue gas discharged can not be got rid of in time, say, that flue gas discharge capacity does not ensures, also can affect smoke-backflow-proof effect, therefore, originally
By the bottom of the curved-surface structure of the first air guide 2 and the distance of the bottom of the curved-surface structure of the second air guide 3 in embodiment
Preferably the 2/8～3/8 of the diameter of the through hole of the first air guide 2, can have the most anti-while ensureing flue gas discharge capacity
The effect of falling cigarette.
The parts of interconnection function are needed to support between first air guide 2 and the second air guide 3, it is contemplated that water conservancy diversion is empty
Between 4 be that all directions are all logical, therefore connect between the first air guide 2 and the second air guide 3 and have several connecting rods 6 solid
Fixed, economical and practical and under any wind direction, all can realize preferable smoke-backflow-proof effect.Meanwhile, several connecting rods 6 are all by welding
Or rivet connects with the first air guide 2 and the second air guide 3, stable connection, and simple easily realization.
In description of the present utility model, it is to be understood that term " " center ", " on ", D score, " vertically ", " top ",
Orientation or the position relationship of the instruction such as " end " " interior ", " outward ", " circumferential ", " vertically ", " level " are based on orientation shown in the drawings
Or position relationship, be for only for ease of describe this utility model and simplify describe rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or more, remove
Non-separately have the most concrete restriction.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands above-mentioned term concrete meaning in this utility model.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
In above-described embodiment can be changed, revise, replace and modification.
Claims (8)
1. a smoke-backflow-proof device, it is characterised in that include the first air guide and second air guide with curved-surface structure；
The bottom of the curved-surface structure of described first air guide is provided with the through hole that the exhaust opening with fume extractor is connected；
Outside the Basolateral of the curved-surface structure of described first air guide is with the bottom of the curved-surface structure of described second air guide
Side is relative, and the curved-surface structure of described first air guide forms diversion space, institute with the curved-surface structure of described second air guide
Stating the cross section of vertical direction of diversion space by centre is arcuation flaring to two ends.
Smoke-backflow-proof device the most according to claim 1, it is characterised in that also include connecting cylinder, one end of described connecting cylinder
Being connected with the exhaust opening of described fume extractor, its other end is connected with the through hole of described first air guide.
Smoke-backflow-proof device the most according to claim 2, it is characterised in that described connecting cylinder with described first air guide is
One time punching molded or described connecting cylinder is welded on described first air guide.
Smoke-backflow-proof device the most according to claim 1, it is characterised in that described first air guide is for having curved-surface structure
Housing.
Smoke-backflow-proof device the most according to claim 1, it is characterised in that described second air guide is for having curved-surface structure
Housing or there is the hollow object of curved-surface structure.
Smoke-backflow-proof device the most according to claim 1, it is characterised in that the end of the curved-surface structure of described first air guide
The distance range of the bottom of the curved-surface structure of end and described second air guide, for the diameter of the through hole of described first air guide
2/8～3/8.
Smoke-backflow-proof device the most according to claim 1, it is characterised in that described first air guide and described second water conservancy diversion
Connect between component and have several connecting rods.
Smoke-backflow-proof device the most according to claim 7, it is characterised in that several described connecting rods are all by welding or rivet
It is connected with described first air guide and described second air guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620656320.7U CN205746926U (en) | 2016-06-28 | 2016-06-28 | A kind of smoke-backflow-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620656320.7U CN205746926U (en) | 2016-06-28 | 2016-06-28 | A kind of smoke-backflow-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205746926U true CN205746926U (en) | 2016-11-30 |
Family
ID=57383056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620656320.7U Expired - Fee Related CN205746926U (en) | 2016-06-28 | 2016-06-28 | A kind of smoke-backflow-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205746926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839438A (en) * | 2017-04-11 | 2017-06-13 | 阿诗丹顿燃具有限公司 | A kind of smoke-backflow-proof exhaust smoke device |
-
2016
- 2016-06-28 CN CN201620656320.7U patent/CN205746926U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839438A (en) * | 2017-04-11 | 2017-06-13 | 阿诗丹顿燃具有限公司 | A kind of smoke-backflow-proof exhaust smoke device |
| CN106839438B (en) * | 2017-04-11 | 2019-05-24 | 阿诗丹顿燃具有限公司 | A kind of smoke-backflow-proof exhaust smoke device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20190628 |