CN111058596A - Jet flow air-drawing hood for house building and use method thereof - Google Patents
Jet flow air-drawing hood for house building and use method thereof Download PDFInfo
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- CN111058596A CN111058596A CN201911392144.5A CN201911392144A CN111058596A CN 111058596 A CN111058596 A CN 111058596A CN 201911392144 A CN201911392144 A CN 201911392144A CN 111058596 A CN111058596 A CN 111058596A
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- hood
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- air outlet
- flue
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
Abstract
The invention relates to an injection flow air-drawing hood for house construction and a using method thereof, belonging to the technical field of building industry. The technical scheme is as follows: an insertion pipeline (14) which is parallel to and upward is arranged outside at least one side surface of the blast cap inner flue smoke outlet (13), and the outlet of the blast cap inner flue smoke outlet (13) is converged with the insertion pipeline air outlet (4) in the middle of the blast cap; the inserted pipeline (14) is a variable-diameter air duct, the inner diameter of the inserted pipeline at the air inlet (3) is the largest, the inner diameter of the inserted pipeline is gradually reduced, and the inner diameter of the inserted pipeline at the air outlet (4) is the smallest. The invention has the following positive effects: the blast cap structure is improved, the insertion pipeline is arranged on at least one side surface of the blast cap, the blast cap and the smoke exhaust air passage form drainage, jet flow and gas drawing effects, and the exhaust effect is improved through injection flow.
Description
Technical Field
The invention relates to an injection flow air-drawing hood for house construction and a using method thereof, belonging to the technical field of building industry.
Background
The hood is one of the ventilation equipments of the house building, and is installed on the ventilation openings or exhaust pipes of the roof, the top of the factory building, etc. The unpowered hood utilizes the principle that natural wind speed promotes convection of indoor and outdoor air, accelerates flowing air and converts the flowing air into vertical air flow from bottom to top so as to improve the indoor ventilation effect, does not need electricity, can be operated for a long time, eliminates indoor hot air, moisture and foul air, and improves the indoor environment. At present, the roofs of high-rise building buildings are all provided with air caps which are positioned at the tops of the smoke exhaust air flues. The prior art blast cap has the following problems: the natural air exhaust is completely realized by the aid of the exhaust flue, the drainage, jet flow and air extraction effects are avoided, the air exhaust efficiency is low, and in addition, the structure of the blast cap is unreasonable, so that the air exhaust efficiency is influenced.
Disclosure of Invention
The invention aims to provide an injection flow air-drawing hood for house buildings and a using method thereof.
The technical scheme of the invention is as follows:
an induced flow air-drawing hood for house construction is arranged at the top of an air exhaust flue and comprises an inner flue of the hood, an air inlet of an insertion pipeline, an air outlet of the insertion pipeline, an inner flue smoke outlet of the hood and the insertion pipeline; flue and the flue gas flue intercommunication of discharging fume of bottom in the hood, the flue upwards to the hood middle part in the hood, insert the pipeline and upwards insert the flue in the hood from the flue lateral surface in the hood, insert pipeline quantity and be more than one, insert the outside that the pipeline air intake is located the hood lower part, insert the middle part that the pipeline air outlet is located the hood, flue exhaust port and the pipeline air outlet join in the hood middle part in the hood of flue in the hood, insert among the pipeline air outlet inserts flue exhaust port in the hood.
The inserted pipeline is a reducing air duct, the inner diameter of the air inlet of the inserted pipeline is the largest, the inner diameter of the air inlet of the inserted pipeline is gradually reduced, and the inner diameter of the air outlet of the inserted pipeline is the smallest. Namely: the inserted pipeline is a variable diameter air duct, and the sectional area of the air inlet of the inserted pipeline is larger than that of the air outlet of the inserted pipeline.
The middle part of the blast cap is provided with a blast cap inner pipe, the outlet of the flue exhaust port in the blast cap and the air outlet of the inserting pipeline are positioned in the blast cap inner pipe, and the height of the blast cap inner pipe is greater than the height of the outlet of the flue exhaust port in the blast cap and the air outlet of the inserting pipeline. The larger the height difference is, the better the drainage jet flow and the air extraction effect are.
The top of the blast cap inner pipe is of an inward convergent structure, so that the inner diameter of the opening at the top of the blast cap inner pipe is smaller than that of the bottom of the blast cap inner pipe, and the ejection flow plate on the periphery of the blast cap inner pipe is convenient to inject to generate upward jet flow, drainage and gas drawing effects. The outer edge around the upper hood of the blast cap is a downward bent outer edge, and the downward bent outer edge is matched with an inward convergence structure of the inner pipe of the blast cap below, so that rainwater is prevented from entering the blast cap.
An air outlet cover is arranged on the air outlet of the insertion pipeline through a hinge shaft, and the air outlet cover does not completely cover the air outlet of the insertion pipeline; still be equipped with air outlet cover stop gear on inserting the pipeline air outlet, air outlet cover stop gear comprises pole setting and spacing bolt, and the pole setting sets up perpendicularly on inserting the pipeline air outlet, is located the air outlet lid at the back, is equipped with spacing bolt in the pole setting, and spacing bolt matches with the air outlet lid, prescribes a limit to the rotation angle of air outlet cover, and rotation angle is less than 90 degrees.
The overall shape of the insertion tube is arbitrary, for example: l-shaped insert tubes, straight insert tubes, etc.
The insertion of the invention comprises different character expression modes of embedding, inlaying, merging, clinging, closing and the like.
The air inlet of the insertion pipeline is horn-shaped, the outer part of the air inlet is large, the inner part of the air inlet is small, the outer part of the air inlet is a rectangular inlet, the inner part of the air inlet is communicated with the air outlet of the insertion pipeline, and the sectional area of the air outlet of the insertion pipeline is 1/4 of that of the air inlet of the insertion pipeline.
The middle part of the blast cap is provided with an injection flow plate and a steel plate framework, a plurality of injection flow plates are fixed on the steel plate framework, the steel plate framework is fixed on the periphery outside the inner pipe of the blast cap, the plurality of injection flow plates are all vertically arranged, a gap is reserved between the adjacent injection flow plates, the plurality of injection flow plates are sequentially arranged in a gradient manner from top to outside, the lower injection flow plate is close to the inside, the upper injection flow plate is close to the outside, and the whole structure is large in top and small in bottom; the bottom of the injection flow plate is tilted outwards and is of an outwards bent structure, and the air inlet amount is increased.
The upper part of the blast cap is provided with an upper blast cap cover which is fixed on the upper part of the blast cap through a steel plate lacing wire; the upper surface of the upper hood of the blast cap is provided with an upper diversion cone, and the lower surface of the upper hood of the blast cap is provided with a lower diversion cone; the periphery of the upper cover of the blast cap is provided with a smoke exhaust port of the blast cap.
The outer wall of the lower part of the hood is provided with hood ears, so that the hood is convenient to install and fix at the top of a house building, and the air inlet of the insertion pipeline is fixed on the hood ears.
The number of the inserted pipelines is multiple, and the inserted pipelines are arranged around the periphery of the flue in the blast cap; the air outlets of the plurality of inserting pipes are inserted into the smoke outlet of the flue in the hood together. The plurality of inserting pipelines arranged around the inner flue of the hood can be arranged in the same layer or arranged around the inner flue of the hood in a plurality of layers.
The hood is square in shape, four side surfaces of the hood are provided with insertion pipelines, the four insertion pipelines are embedded into four side surfaces of the inner flue of the hood, and five inner flue exhaust ports of the hood and four air outlets of the insertion pipelines are formed in the middle of the hood; wherein: the flue exhaust port in one hood is located the center, and the flue exhaust port in all the other four hoods is located the four corners, and four insert the pipeline air outlet and be located four sides, and four insert the pipeline air outlet and encircle the flue exhaust port interval arrangement in the hood at center.
The steel plate framework is arranged at four corners of the upper part of the blast cap, the injection flow plate is connected to the steel plate framework, and four corners of the upper cover of the blast cap are pulled on the steel plate frameworks at four corners by steel plate lacing wires.
The outer shape of the hood is any shape, such as square, circle, diamond, etc.
A use method of an injection flow air-drawing hood for house building adopts the hood, and comprises the following steps:
the hood is arranged on a smoke exhaust air passage with the area smaller than the bottom of the hood, a parapet is built around the hood, and the hood is arranged on the parapet around the parapet by using expansion bolts to penetrate through ears of the hood; the external natural wind enters the insertion pipeline through the air inlet of the insertion pipeline, the insertion pipeline is a variable diameter air duct, and when passing through the air outlet of the insertion pipeline, a variable pressure effect is generated; external natural wind is guided by the air inlet of the insertion pipeline and is ejected out through the air outlet of the insertion pipeline to generate jet flow, negative pressure is generated when the jet flow blows smoke in the inner pipe of the hood, the smoke in the flue in the hood is pulled out, the guide flow is firstly utilized, and then the jet flow is utilized to blow the smoke in the flue in the hood, so that the negative pressure effect of pulling out the smoke in the smoke exhaust passage below the hood is generated.
The invention does not need power, utilizes external natural wind, firstly enters air through the air inlet of the insertion pipeline, then exits air through the air outlet of the insertion pipeline, and is matched with the injection flow plate and the upper diversion cone in the hood to generate a plurality of points of flow guide jet flow and air extraction effects, so that strong and long-term negative pressure is generated in the exhaust flue below the hood, and the exhaust flue gas volume is increased. The invention can reduce the size of the smoke exhaust duct 1/3, enlarge the use area in kitchens or toilets, save materials and reduce energy consumption. The invention prevents backflow and smoke backflow caused by natural wind, and avoids odor tainting among households.
The invention is substantially different from the prior art, and the prior art hopes that the smaller the natural wind is, the better the natural wind is. The invention is just opposite, and the larger the natural wind is, the better the effect is, and the more the natural wind is, the more the natural wind is not poured backwards. When no wind exists in the weather, the air temperature and the temperature in the hood generate thermal pressure difference to form power, smoke is discharged downwards from the gap of the injection flow plate of the hood, smoke is discharged upwards from the smoke outlet of the hood, and the gas around the hood flows to form the effects of upward drainage, jet flow and gas extraction. The invention has the advantages of wind resistance, rain resistance, snow resistance, backflow prevention, no rotating part, no mechanical failure and maintenance free.
The invention has the following positive effects: the blast cap structure is improved, the insertion pipeline is arranged on at least one side surface of the blast cap, the exhaust flue and the exhaust flue form drainage, jet flow and exhaust effects, the exhaust effect is improved through the injection flow, and the exhaust volume is increased.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an embodiment of the present invention;
FIG. 2 is a schematic top view of an overall structure of an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a-A of an embodiment of the present invention;
FIG. 4 is a schematic view of a hood structure according to an embodiment of the present invention;
FIG. 5 is a schematic top view of a hood according to an embodiment of the present invention;
FIG. 6 is a schematic view of an upper cover structure of a hood according to an embodiment of the present invention;
FIG. 7 is a schematic top view of an upper cover of a hood according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an internal structure of an embodiment of the present invention;
FIG. 9 is a schematic top view of an internal structure of an embodiment of the present invention;
FIG. 10 is a schematic view of an internal airflow passage according to an embodiment of the invention;
FIG. 11 is a schematic view of the internal airflow passages of the second embodiment of the present invention;
FIG. 12 is a schematic diagram of a third embodiment of the present invention;
FIG. 13 is a schematic view of an outlet structure of a third insert pipe according to an embodiment of the present invention;
FIG. 14 is a schematic view of an air outlet structure of an insert pipe according to an embodiment of the present invention;
in the figure: the device comprises a smoke exhaust air passage 1, hood ears 2, an insertion pipeline air inlet 3, an insertion pipeline air outlet 4, a hood inner pipe 5, an injection flow plate 6, a steel plate framework 7, a hood upper cover 8, a steel plate tie bar 9, an upper flow guide cone 10, a lower flow guide cone 11, a hood smoke exhaust port 12, a hood inner flue smoke exhaust port 13, an insertion pipeline 14, an inward convergence structure 15, an air outlet cover 16, a vertical rod 17, a limiting bolt 18, a bending structure 19 and a bending outer edge 20.
Detailed Description
The invention is further described with reference to the following figures and examples:
an induced flow air-drawing hood for house construction is arranged at the top of an exhaust flue 1 and comprises an inner flue of the hood, an air inlet 3 of an insertion pipeline, an air outlet 4 of the insertion pipeline, an inner flue exhaust port 13 of the hood and an insertion pipeline 14; flue and the 1 intercommunication of discharging fume of bottom in the hood, flue upwards to the hood middle part in the hood, insert the flue in the hood from the flue lateral surface upwards in the hood 14, insert 14 quantity of pipelines and be more than one, insert 3 outsides that the pipeline air intake is located the hood lower part, insert the middle part that the pipeline air outlet 4 is located the hood, flue exhaust port 13 joins in the hood of flue in the hood with insert 4 pipeline air outlets in the hood middle part, insert among the pipeline air outlet 4 inserts flue exhaust port 13 in the hood.
The insertion pipeline 14 is a variable diameter air duct, the inner diameter of the insertion pipeline at the air inlet 3 is the largest, the inner diameter is gradually reduced, and the inner diameter of the insertion pipeline at the air outlet 4 is the smallest. Namely: the inserting pipeline 14 is a reducing air duct, and the sectional area of the air inlet 3 of the inserting pipeline is larger than that of the air outlet 4 of the inserting pipeline.
The middle part of the hood is provided with a hood inner tube 5, the outlet of the flue smoke outlet 13 in the hood and the inserted pipeline air outlet 4 are positioned in the hood inner tube 5, and the height of the hood inner tube 5 is greater than the height of the outlet of the flue smoke outlet 13 in the hood and the inserted pipeline air outlet 4. The larger the height difference is, the better the drainage jet flow and the air extraction effect are.
The overall shape of the insertion duct 14 is arbitrary, for example: l-shaped insert tubes, straight insert tubes, etc.
The air inlet 3 of the insertion pipeline is horn-shaped, the outer part of the air inlet is large, the inner part of the air inlet is small, the outer part of the air inlet is a rectangular inlet, the inner part of the air inlet is communicated with the air outlet of the insertion pipeline, and the sectional area of the air outlet of the insertion pipeline is 1/4 of that of the air inlet of the insertion pipeline.
In the first embodiment, the insertion pipe 14 is an L-shaped insertion pipe, the insertion pipe 14 is composed of a horizontal section and a vertical section, the inlet of the horizontal section is an insertion pipe air inlet 3 and is located outside the lower portion of the hood, the outlet of the vertical section is an insertion pipe air outlet 4 and is located in the middle of the interior of the hood, the vertical sections of the insertion pipe 14 and the flue in the hood are arranged in the hood, and the flue exhaust port 13 in the hood of the flue in the hood and the insertion pipe air outlet 4 are converged in the middle of the hood.
The middle part of hood is equipped with and draws and penetrates a class 6 and steel sheet skeleton 7, and a plurality of drawing and penetrate class 6 and fix on steel sheet skeleton 7, and steel sheet skeleton 7 is fixed around hood inner tube 5 is outer, and a plurality of drawing and penetrate class 6 and all arrange perpendicularly, and adjacent drawing penetrates and leaves the gap between class 6, and a plurality of drawing and penetrate class 6 echelon upwards outwards arranges in proper order, and the drawing that penetrates below flows the class and leans on the inside, and the drawing that penetrates above flows the class and leans on the outside, overall structure big end down.
The upper part of the blast cap is provided with a blast cap upper cover 8, and the blast cap upper cover 8 is fixed on the upper part of the blast cap through a steel plate lacing wire 9; the upper surface of the blast cap upper cover 8 is provided with an upper diversion cone 10, and the lower surface is provided with a lower diversion cone 11; around the hood upper cover 8 is a hood exhaust 12.
The outer wall of the lower part of the hood is provided with hood ears 2, so that the hood is convenient to install and fix at the top of a house building, and an air inlet of an insertion pipeline is fixed on the hood ears.
The number of the inserted pipelines is multiple, and the inserted pipelines are arranged around the periphery of the flue in the blast cap; the air outlets 4 of the inserting pipes are jointly inserted into the smoke outlet 13 of the flue in the hood. The plurality of inserting pipelines arranged around the inner flue of the hood can be arranged in the same layer or arranged around the inner flue of the hood in a plurality of layers.
In the embodiment, referring to fig. 2, the hood is square, four side surfaces of the hood are provided with insertion pipes 14, the four insertion pipes 14 are embedded into four side surfaces of the hood inner flue, and five hood inner flue exhaust ports 13 and four insertion pipe air outlets 4 are formed in the middle of the hood; wherein: the flue exhaust port in one hood is located the center, and the flue exhaust port in all the other four hoods is located the four corners, and four insert the pipeline air outlet and be located four sides, and four insert the pipeline air outlet and encircle the flue exhaust port interval arrangement in the hood at center.
The steel plate framework 7 is arranged at four corners of the upper part of the blast cap, the injection flow plate 6 is connected to the steel plate framework 7, and four corners of the upper cover 8 of the blast cap are pulled on the steel plate frameworks at the four corners by steel plate lacing wires 9.
Referring to fig. 14, the air outlet cover 16 is provided on the air outlet 4 of the insertion duct by a hinge shaft, and the air outlet cover 16 does not cover the air outlet 4 of the insertion duct completely, but only covers 1/4 to 3/4 of the air outlet 4 of the insertion duct; the air outlet cover limiting mechanism is further arranged on the insertion pipeline air outlet 4 and comprises an upright rod 17 and a limiting bolt 18, the upright rod 17 is vertically arranged on the insertion pipeline air outlet 4 and is located behind the air outlet cover 16, the limiting bolt 18 is arranged on the upright rod 17, the limiting bolt 18 is matched with the air outlet cover 16, the turning angle of the air outlet cover 16 is limited, and the turning angle is smaller than 90 degrees.
The area of the air outlet cover 16 is smaller than that of the inserted pipeline air outlet 4, the variable pressure effect is achieved, when wind power is small, the air outlet cover 16 does not turn over and covers the inserted pipeline air outlet 4, when the wind power is large, the air outlet cover 16 is blown to turn over, and the air outlet cover limiting mechanism limits the turning range of the air outlet cover 16.
A use method of an injection flow air-drawing hood for house building adopts the hood, and comprises the following steps:
the hood is arranged on a smoke exhaust air passage 1 with the area smaller than the bottom of the hood, a parapet is built around the hood, and the hood is arranged on the parapet around the parapet by using expansion bolts to penetrate through the hood ears 2; the external natural wind enters the insertion pipeline 14 through the insertion pipeline air inlet 3, the insertion pipeline 14 is a variable-diameter air duct, and when passing through the insertion pipeline air outlet 4, a variable-pressure effect is generated; external natural wind is guided by the air inlet 3 of the insertion pipeline and is ejected out through the air outlet 4 of the insertion pipeline to generate jet flow, when the jet flow blows smoke in the inner pipe 5 of the hood, negative pressure is generated, the smoke in the flue in the hood is pulled out, the guide flow is firstly utilized, then the jet flow is utilized to blow the smoke in the flue in the hood, and the negative pressure effect of pulling out the smoke in the smoke exhaust passage below the hood is generated.
The steel plate framework 7 is arranged at four corners of the upper part of the hood, the jet flow plate 6 is connected onto the steel plate framework 7, external natural wind generates jet flow through the jet flow plate, and the jet flow plate is vertically and upwards diffused and arranged, so that air is induced upwards, jet flow negative pressure is generated inside the hood, and smoke in the hood is driven to be upwards discharged at a high speed.
Four corners of the blast cap upper cover 8 are pulled on steel plate frameworks at the four corners by steel plate pull ribs 9. The lower diversion cone 11 of the upper hood of the hood enables natural wind to flow upwards, the exhaust ports 12 of the hood around the upper hood of the hood form a gas extraction effect, the upper diversion cone 10 of the upper hood of the hood enables smoke discharged inside the hood to be discharged in a shunting manner, and when the smoke collides with the upper diversion cone, the smoke cannot rebound and is discharged smoothly.
The upper hood cover must be larger than the size of the inner pipe of the hood to prevent rainwater from leaking into the main pipe.
Example two, refer to fig. 11. The middle part of the hood is provided with a hood inner tube 5, the outlet of the flue smoke outlet 13 in the hood and the inserted pipeline air outlet 4 are positioned in the hood inner tube 5, and the height of the hood inner tube 5 is greater than the height of the outlet of the flue smoke outlet 13 in the hood and the inserted pipeline air outlet 4. The larger the height difference is, the better the drainage jet flow and the air extraction effect are. The top of the blast cap inner pipe 5 is of an inward convergence structure 15, so that the inner diameter of the opening at the top of the blast cap inner pipe 5 is smaller than the inner diameter of the bottom of the blast cap inner pipe 5, and the ejection flow plate 6 on the periphery of the blast cap inner pipe 5 is convenient to jet, drain and pull out air upwards.
The bottom of the injection flow plate 6 is tilted outwards and is of an outwards bent structure 19, and the air inlet amount is increased.
Example three, refer to fig. 12, 13. The inserting pipeline 14 is a straight line inserting pipeline, the inserting pipeline 14 is a reducing pipeline, the straight line is upwards inserted into the flue in the hood, the inserting pipeline air inlet 3 is positioned outside the lower part of the hood, the inserting pipeline air outlet 4 is positioned in the middle of the hood, and the flue exhaust port 13 in the hood of the flue in the hood is converged with the inserting pipeline air outlet 4 in the middle of the hood.
The inserting pipeline 14 is inserted into the blast cap in a straight line and inclined mode, and the flue smoke outlet 13 in the blast cap is kept flush with the air outlet 4 of the inserting pipeline; the air outlet cover 16 is arranged on the air outlet 4 of the insertion pipeline through a hinge shaft, the air outlet cover 16 does not completely cover the air outlet 4 of the insertion pipeline, and only covers 1/4-3/4 of the air outlet 4 of the insertion pipeline; the air outlet cover limiting mechanism is further arranged on the insertion pipeline air outlet 4 and comprises an upright rod 17 and a limiting bolt 18, the upright rod 17 is vertically arranged on the insertion pipeline air outlet 4 and is located behind the air outlet cover 16, the limiting bolt 18 is arranged on the upright rod 17, the limiting bolt 18 is matched with the air outlet cover 16, the turning angle of the air outlet cover 16 is limited, and the turning angle is smaller than 90 degrees.
The area of the air outlet cover 16 is smaller than that of the inserted pipeline air outlet 4, the variable pressure effect is achieved, when wind power is small, the air outlet cover 16 does not turn over and covers the inserted pipeline air outlet 4, when the wind power is large, the air outlet cover 16 is blown to turn over, and the air outlet cover limiting mechanism limits the turning range of the air outlet cover 16.
The bottom of the injection flow plate 6 is tilted outwards and is of an outwards bent structure 19, and the air inlet amount is increased.
The top of the blast cap inner pipe 5 is of an inward convergence structure 15, so that the inner diameter of the opening at the top of the blast cap inner pipe 5 is smaller than the inner diameter of the bottom of the blast cap inner pipe 5, and the ejection flow plate 6 on the periphery of the blast cap inner pipe 5 is convenient to jet, drain and pull out air upwards. The outer edge around the upper hood cover 8 is a downward bent outer edge 20, and the downward bent outer edge 20 is matched with the inward convergence structure 15 of the inner pipe 5 of the lower hood, so that rainwater is prevented from entering. The structure enables the inner pipe 5 of the blast cap to be a variable pressure structure, and backflow is prevented.
The product performance is characterized in that: the invention does not need power, utilizes external natural wind, firstly enters air through the air inlet of the insertion pipeline, then exits air through the air outlet of the insertion pipeline, and is matched with the injection flow plate and the lower diversion cone in the hood to generate a plurality of points of flow guide jet flow and air extraction effects, so that strong and long-term negative pressure is generated in the exhaust flue below the hood, and the exhaust flue gas volume is increased. The invention can reduce the size of the smoke exhaust duct 1/3, enlarge the use area in kitchens or toilets, save materials and reduce energy consumption. The invention prevents backflow and smoke backflow caused by natural wind, and avoids odor tainting among households.
The upper flow guide cone has the following functions: the wind direction can be changed no matter which direction the wind comes, and the effect of pulling out the air is produced. The jet flow plate is vertically arranged, and the wind coming from any direction can be converted into upward power to generate the effect of drawing out the air. The invention has the effects of internal and external drainage and jet flow gas extraction.
Claims (10)
1. The utility model provides a housing construction draws gas hood with drawing penetrating flow, sets up at exhaust airway (1) top, its characterized in that: comprises an inner flue of the hood, an air inlet (3) of an insertion pipeline, an air outlet (4) of the insertion pipeline, an exhaust port (13) of the inner flue of the hood and an insertion pipeline (14); flue and the flue of discharging fume (1) intercommunication of bottom in the hood, the flue upwards to the hood middle part in the hood, insert pipeline (14) upwards insert the flue in the hood from the flue outside face in the hood, insert pipeline (14) quantity is more than one, insert pipeline air intake (3) and be located the outside of hood lower part, insert the middle part that pipeline air outlet (4) are located the hood, flue exhaust port (13) and insert pipeline air outlet (4) converge in the hood middle part of hood in the hood of flue in the hood, insert among pipeline air outlet (4) insert flue exhaust port (13) in the hood.
2. The induced flow air-drawing hood for the house building according to claim 1, which is characterized in that: the inserted pipeline (14) is a variable-diameter air duct, the inner diameter of the inserted pipeline at the air inlet (3) is the largest, the inner diameter of the inserted pipeline is gradually reduced, and the inner diameter of the inserted pipeline at the air outlet (4) is the smallest.
3. The induced flow air-drawing hood for the house building according to the claim 1 or 2, characterized in that: the middle part of the hood is provided with a hood inner tube (5), the outlet of the flue smoke outlet (13) in the hood and the inserted pipeline air outlet (4) are positioned in the hood inner tube (5), and the height of the hood inner tube (5) is greater than the height of the outlet of the flue smoke outlet (13) in the hood and the inserted pipeline air outlet (4).
4. The induced flow air-drawing hood for the house building according to the claim 1 or 2, characterized in that: the inserted pipeline air inlet (3) is horn-shaped, the outer part is large, the inner part is small, the outer part is a rectangular inlet, the inner part is communicated with the inserted pipeline air outlet, and the sectional area of the inserted pipeline air outlet is 1/4 of that of the inserted pipeline air inlet.
5. The induced flow air-drawing hood for the house building according to the claim 1 or 2, characterized in that: the middle part of the blast cap is provided with an injection flow plate (6) and a steel plate framework (7), the injection flow plates (6) are fixed on the steel plate framework (7), the steel plate framework (7) is fixed on the periphery outside an inner pipe (5) of the blast cap, the injection flow plates (6) are vertically arranged, a gap is reserved between the adjacent injection flow plates (6), the injection flow plates (6) are sequentially arranged in a gradient manner from top to bottom, the lower injection flow plate is close to the inside, the upper injection flow plate is close to the outside, and the whole structure is large in size; the bottom of the injection flow plate (6) is tilted outwards and is of an outwards bent structure (19), and the air inlet amount is increased.
6. The induced flow air-drawing hood for the house building according to the claim 1 or 2, characterized in that: the upper part of the blast cap is provided with a blast cap upper cover (8), and the blast cap upper cover (8) is fixed on the upper part of the blast cap through a steel plate lacing wire (9); the upper surface of the blast cap upper cover (8) is provided with an upper diversion cone (10), and the lower surface is provided with a lower diversion cone (11); the periphery of the upper hood (8) of the blast cap is provided with a blast cap smoke exhaust port (12).
7. The induced flow air-drawing hood for the house building according to the claim 1 or 2, characterized in that: the hood is square in shape, the four side surfaces of the hood are respectively provided with an insertion pipeline (14), the four insertion pipelines are embedded into the four side surfaces of the inner flue of the hood, and five inner flue exhaust ports (13) of the hood and four insertion pipeline air outlets (4) are formed in the middle of the hood; wherein: the flue exhaust port in one hood is located the center, and the flue exhaust port in all the other four hoods is located the four corners, and four insert the pipeline air outlet and be located four sides, and four insert the pipeline air outlet and encircle the flue exhaust port interval arrangement in the hood at center.
8. The induced flow air-drawing hood for the house building according to claim 3, characterized in that: the top of the blast cap inner pipe (5) is an inward convergent structure (15), so that the inner diameter of the opening at the top of the blast cap inner pipe (5) is smaller than the inner diameter of the bottom of the blast cap inner pipe (5), and an injection flow plate (6) at the periphery of the blast cap inner pipe (5) can conveniently generate upward jet flow, flow guiding and air drawing effects; the outer edge around the blast cap upper cover (8) is a downward bent outer edge (20), and the downward bent outer edge (20) is matched with an inward convergence structure (15) of the blast cap inner tube (5) below, so that rainwater is prevented from entering.
9. The induced flow air-drawing hood for the house building according to claim 3, characterized in that: an air outlet cover (16) is arranged on the air outlet (4) of the insertion pipeline through a hinge shaft, and the air outlet cover (16) does not completely cover the air outlet (4) of the insertion pipeline; insert still to be equipped with air outlet cover stop gear on pipeline air outlet (4), air outlet cover stop gear comprises pole setting (17) and spacing bolt (18), and pole setting (17) set up perpendicularly on inserting pipeline air outlet (4), are located air outlet cover (16) at the back, are equipped with spacing bolt (18) on pole setting (17), and spacing bolt (18) are matchd with air outlet cover (16), inject the rotation angle of air outlet cover (16), and rotation angle is less than 90 degrees.
10. A method of using an induced flow draft hood for building construction, using the hood defined in any one of claims 1 to 9, comprising the steps of:
the hood is arranged on a smoke exhaust air passage (1) smaller than the area of the bottom of the hood, a parapet is built around the hood, and expansion bolts penetrate through ears (2) of the hood to install the hood on the parapet around; external natural wind enters the insertion pipeline (14) through the insertion pipeline air inlet (3), the insertion pipeline (14) is a variable-diameter air duct, and when passing through the insertion pipeline air outlet (4), a variable-pressure effect is generated; external natural wind is guided by the air inlet (3) of the insertion pipeline and is ejected out through the air outlet (4) of the insertion pipeline to generate jet flow, when the jet flow blows flue gas in the inner pipe (5) of the hood, negative pressure is generated, the flue gas in the flue in the hood is pulled out, the guide flow is firstly utilized, then the jet flow is utilized to blow the flue gas in the flue in the hood, and the negative pressure effect of pulling gas is generated in the exhaust flue below the hood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911392144.5A CN111058596A (en) | 2019-12-30 | 2019-12-30 | Jet flow air-drawing hood for house building and use method thereof |
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| CN201911392144.5A CN111058596A (en) | 2019-12-30 | 2019-12-30 | Jet flow air-drawing hood for house building and use method thereof |
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