Anti-backflow external flue for residential building

Abstract

The utility model relates to a kind of residence building shared anti-inverted flue of pouring external chimney, comprising: main pipeline, the main pipeline is fixed in building outer wall, its top end face is closed, and top end four around side wall is set up smoke outlet;Wind shield, the wind shield is fixed in the top end of main pipeline, and is surrounded in the four around of smoke outlet, each outer wall surface of the wind shield is set with guide slope;Anti-smoke-inflame chimney, fixed in main pipeline, its inside is provided with check structure;Advantages are that: by moving chimney to building exterior, effectively release kitchen indoor space, improve space utilization and layout regularity.Through the gravity anti-inverted flue smoke outlet of upturning type, realize indoor one-way smoke exhaust, solve the problem of traditional chimney's smoke, smell problem;And using the negative pressure effect formed by the wind shield with guide slope on top, significantly improve smoke exhaust efficiency and prevent wind force pouring, while the design of main pipeline conical end face is conducive to rain and snow slide, ensure the unobstructed of main pipeline.

Description

Technical Field

[0001] This utility model relates to the field of building flue technology, and in particular to a shared anti-backflow external flue for residential buildings. Background Technology

[0002] As the living standards of Chinese residents continue to improve, cooking methods are becoming increasingly diversified. In particular, high-temperature stir-frying is widely used in Chinese cooking to achieve the desired "wok hei" (wok aroma). However, this cooking method produces a large amount of oil fumes, which, if not effectively removed, will have adverse effects on human health.

[0003] Currently, most households use high-powered range hoods to solve the problem of cooking fumes. However, in current buildings, kitchen exhaust systems mostly use small-diameter indoor flues, which have many drawbacks: First, due to the small diameter and long path of the flue, it is easy to cause poor ventilation, especially when multiple households use it at the same time, which can easily lead to backflow of fumes and cross-contamination of smoke and odors; second, when fumes pass through the flue at high temperatures, the tiles or other decorative materials attached to the inner wall of the flue may crack or fall off due to thermal expansion and contraction, which not only affects the appearance but also poses a safety hazard; in addition, indoor flues also take up kitchen space and are difficult to maintain.

[0004] Therefore, this case is brought. Utility Model Content

[0005] The purpose of this utility model is to provide a shared anti-backflow external flue for residential buildings to solve the above-mentioned defects.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A shared backflow prevention external flue for residential buildings includes: The main pipe is fixed to the exterior wall of the building by a connector. The top end of the main pipe is sealed by an end cap, and smoke vents are opened on the four sides of the top of the main pipe. A wind shield is fixed to the top of the main pipe by a connector two and surrounds the exhaust port. Each outer wall surface of the wind shield is provided with an upward and / or downward guide slope to guide crosswinds from above and / or below the exhaust port. The smoke inlet duct is fixed on the main pipe. One end of the smoke inlet duct is used to connect to the exhaust port of the kitchen range hood in the building, and the other end is used to communicate with the inner cavity of the main pipe. The smoke inlet duct is equipped with a check structure.

[0008] Furthermore, the end cap at the top port of the main pipe is conical.

[0009] Furthermore, the main pipeline includes several pipeline units, and adjacent pipeline units are plugged and plugged together.

[0010] Furthermore, the connector one includes a clamp assembly one, which includes a clamp body one and a support plate one fixed to the end of the clamp body one. A through hole is provided on the support plate one, and a bolt for screwing into the wall is installed at the through hole.

[0011] The clamp body is installed horizontally on the main pipeline.

[0012] Furthermore, the first connector includes a second clamp assembly, which includes a second clamp body, a second support plate fixed to the end of the second clamp body, a tie band, and a third support plate fixed to one end of the tie band. The other end of the tie band is fixed to the second clamp body. Both the second and third support plates have through holes, and bolts for screwing into the wall are installed at the through holes. The second hoop body is installed horizontally on the main pipeline, and the tie band is installed obliquely.

[0013] Furthermore, the smoke inlet duct for preventing cross-contamination includes a smoke inlet duct body, a fixing plate is provided on the smoke inlet duct body, an annular groove is formed in the circumference of the fixing plate, and a smoke inlet duct mounting hole is formed on the main pipe, with the hole wall of the smoke inlet duct mounting hole embedded in the annular groove. The flue body is provided with a guide channel at one end inside the main pipe. The guide channel has an inlet and an outlet. The oil fumes entering the flue body enter from the inlet of the guide channel, are guided by the guide channel, and are discharged from the outlet of the guide channel, and finally enter the main pipe. The outlet of the guide channel is provided with a flip-up cover and a limiting member for limiting the flip-up angle of the cover. The flip-up angle of the cover is less than 90°.

[0014] Furthermore, an inspection port is provided on the bottom side wall of the main pipeline.

[0015] Furthermore, the inner sidewall of the main pipeline is lined with a steel mesh.

[0016] The advantages of this utility model are:

[0017] This residential building uses a shared anti-backflow external flue. By moving the flue to the exterior of the building, it effectively frees up kitchen space, improving space utilization and layout regularity. The upward-opening gravity anti-backflow flue allows for one-way smoke exhaust within the unit, solving the problems of smoke and odor mixing associated with traditional flues. Furthermore, the negative pressure effect created by the top-mounted guide sloping wind shield significantly improves exhaust efficiency and prevents backflow. The tapered end design of the main duct facilitates the sliding of rain and snow, ensuring unobstructed flow.

[0018] Adopting a modular design, the height of the main duct can be flexibly increased or decreased according to the floor height, and installation is convenient. The flue is firmly anchored to the external wall through various clamping structures (including horizontal support and diagonal bracing), ensuring structural stability and safety; the built-in steel mesh prevents cracking due to temperature differences and extends service life. In addition, the openingable rectangular inspection port greatly facilitates later cleaning and maintenance of grease, enabling this external flue to overcome the disadvantages of difficult maintenance of traditional flues. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the shared backflow prevention external flue in the residential building in the embodiment; Figure 2 for Figure 1 A diagram from another perspective; Figure 3 This is a schematic diagram of the structure of the top of the shared anti-backflow external flue in the residential building in the embodiment; Figure 4 for Figure 3 A diagram from another perspective; Figure 5 for Figure 3 An explosion diagram; Figure 6 This is a schematic diagram of the structure of the first hoop assembly in the embodiment; Figure 7 for Figure 6 A schematic diagram of the structure from another perspective; Figure 8 This is a schematic diagram of the structure of the second hoop assembly in the embodiment; Figure 9 for Figure 8 An explosion diagram; Figure 10 This is a schematic diagram of the installation of the anti-smoke inlet duct on the main pipe in the embodiment; Figure 11 for Figure 10 An explosion diagram; Figure 12 This is an enlarged schematic diagram of the smoke inlet duct for preventing cross-contamination in the embodiment; Figure 13 This is a schematic diagram of the inspection port in the embodiment; Figure 14 This is a schematic diagram of the steel mesh laid inside the side wall of the main pipeline in the embodiment; Label Explanation 1. Main pipe; 101. Smoke exhaust outlet; 102. Conical end cap; 103. Steel mesh; 104. Pipe unit; 105. Smoke inlet mounting hole; 106. Inspection port; 2. Windproof cover; 201. Guide slope; 202. Connector II; 3. Anti-smoke inlet duct; 301. Smoke inlet duct body; 302. Fixing plate; 303. Circular groove; 304. Guide groove; 305. Cover plate; 306. Limiting component; 4. Hoop assembly I; 401. Hoop body I; 402. Support plate I; 5. Hoop assembly II; 501. Hoop body II; 502. Support plate II; 503. Tie band; 504. Support plate III. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the embodiments. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicated by the accompanying drawings are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0021] This embodiment proposes a shared external smoke duct for preventing backflow in residential buildings, such as... Figure 1 and Figure 2 As shown, it includes the main pipe 1, the windproof cover 2, and the smoke inlet duct 3 to prevent smoke from entering.

[0022] Main pipe 1 is fixed to the exterior wall of the building via connector 1, see reference. Figure 9 The main pipe 1 comprises several pipe units 104, with adjacent pipe units 104 being pluggable connections. This design allows for flexible adjustment of the main pipe 1's height based on floor height and facilitates installation. (Reference) Figure 5 The top end of the main pipe 1 is sealed by an end cap. Smoke vents 101 are opened on the four sides of the top of the main pipe 1. In this embodiment, the end cap is a conical end cap 102 with four sloping ramps. In rainy and snowy weather, the conical end cap 102 can quickly drain rainwater and snow to avoid blocking the smoke vents 101.

[0023] refer to Figures 3 to 5The wind shield 2 is fixed to the top of the main pipe 1 by connector 202 and surrounds the smoke exhaust outlet 101. Each outer wall surface of the wind shield 2 is provided with upward and downward guide slopes 201 to guide crosswinds from above and below the smoke exhaust outlet 101. The wind shield 2 surrounds the smoke exhaust outlet 101, preventing wind from directly flowing back into the flue when the wind force is strong. The wind shield 2 with guide slopes 201 can guide crosswinds to pass quickly from above and below the smoke exhaust outlet 101. According to Bernoulli's principle in fluid dynamics, the pressure is low where the flow velocity is high, which can guide the smoke exhausted by the residents to diffuse quickly and improve the overall smoke exhaust efficiency.

[0024] like Figure 6 and Figure 7 As shown, connector one includes a clamp assembly 4, which includes a clamp body 401 and a support plate 402 fixed to the end of the clamp body 401. The support plate 402 has a through hole, at which a bolt for screwing into the wall is installed. The clamp body 401 is horizontally installed on the main pipe 1. Further, connector one also includes a clamp assembly 5, which includes a clamp body 501, a support plate 502 fixed to the end of the clamp body 501, a tie band 503, and a support plate 504 fixed to one end of the tie band 503. The other end of the tie band 503 is fixed to the clamp body 501. Both the support plate 502 and the support plate 504 have through holes, at which bolts for screwing into the wall are installed. The clamp body 501 is horizontally installed on the main pipe 1, and the tie band 503 is installed obliquely.

[0025] The first clamp assembly 4 and the second clamp assembly 5 are used to fix the various pipe units 104 in the main pipe 1. The second clamp assembly 5 is set at the junction of two pipe units 104. The horizontally installed clamp body 501 supports the weight of the upper pipe unit 104, and the obliquely installed tie strap 503 increases the tie force and fixes the upper pipe unit 104.

[0026] like Figures 10 to 12As shown, the anti-smoke inlet duct 3 includes an inlet duct body 301. A fixing plate 302 is provided on the inlet duct body 301, and an annular groove 303 is formed around the fixing plate 302. An inlet duct mounting hole 105 is formed on the main pipe 1, and the wall of the mounting hole 105 is embedded in the annular groove 303. A guide channel 304 is provided at one end of the inlet duct body 301 located within the main pipe 1. The guide channel 304 has an inlet and an outlet. Oil fumes entering the inlet duct body 301 enter through the inlet of the guide channel 304, are guided by the guide channel 304, and exit through the outlet of the guide channel 304, finally entering the main pipe 1. A flip-up cover plate 305 and a limiting member 306 for limiting the flip-up angle of the cover plate 305 are provided at the outlet of the guide channel 304. The flip-up angle of the cover plate 305 is less than 90°. The guide channel 304 and the cover plate 305, which can be opened at a certain angle, form a check valve, which allows the flue gas to flow in only one direction. That is, the flue gas can flow through the path of "inlet flue body 301 - guide channel 304 - main pipe 1". When the flue gas pushes the cover plate 305 upward and flows out, the cover plate 305 resets under the action of gravity, closing the outlet of the guide channel 304. The flue gas cannot flow back. At the same time, the flue gas in the main pipe 1 cannot open the cover plate 305, thus solving the problem of cross-contamination of smoke and odor in traditional flues.

[0027] like Figure 13 As shown, an inspection port 106 is provided on the bottom side wall of the main pipe 1. When there are debris in the flue or when it is necessary to clean the grease, the inspection port 106 can be opened.

[0028] As an improvement, such as Figure 14 As shown, in this embodiment, the inner sidewall of the main pipe 1 is lined with a steel mesh 103, which serves to tie the precast concrete material on the surface of the flue and prevent the material from cracking due to the large temperature difference between the inside of the flue and the outside.

[0029] The above embodiments are only used to explain the concept of the present invention, and are not intended to limit the protection of the present invention. Any non-substantial modifications made to the present invention using this concept should fall within the protection scope of the present invention.

Claims

1. A shared anti-backflow external flue for residential buildings, characterized in that, include: The main pipe is fixed to the exterior wall of the building by a connector. The top end of the main pipe is sealed by an end cap, and smoke vents are opened on the four sides of the top of the main pipe. A wind shield is fixed to the top of the main pipe by a connector two and surrounds the exhaust port. Each outer wall surface of the wind shield is provided with an upward and / or downward guide slope to guide crosswinds from above and / or below the exhaust port. The smoke inlet duct is fixed on the main pipe. One end of the smoke inlet duct is used to connect to the exhaust port of the kitchen range hood in the building, and the other end is used to communicate with the inner cavity of the main pipe. The smoke inlet duct is equipped with a check structure.

2. The shared anti-backflow external flue for residential buildings as described in claim 1, characterized in that, The end cap at the top port of the main pipeline is conical.

3. The shared anti-backflow external flue for residential buildings as described in claim 1, characterized in that, The main pipeline comprises several pipeline units, and adjacent pipeline units are plugged and plugged together.

4. The shared anti-backflow external flue for residential buildings as described in claim 1, characterized in that, The first connector includes a clamp assembly, which includes a clamp body and a support plate fixed to the end of the clamp body. The support plate has a through hole, and a bolt for screwing into the wall is installed at the through hole. The clamp body is installed horizontally on the main pipeline.

5. A shared anti-backflow external flue for residential buildings as described in claim 1, characterized in that, The first connector includes a second clamp assembly, which includes a second clamp body, a second support plate fixed to the end of the second clamp body, a tie band, and a third support plate fixed to one end of the tie band. The other end of the tie band is fixed to the second clamp body. Both the second and third support plates have through holes, and bolts for screwing into the wall are installed at the through holes. The second hoop body is installed horizontally on the main pipeline, and the tie band is installed obliquely.

6. A shared anti-backflow external flue for residential buildings as described in claim 1, characterized in that, The anti-smoke inlet duct includes an inlet duct body, a fixing plate is provided on the inlet duct body, an annular groove is formed in the circumference of the fixing plate, and an inlet duct mounting hole is formed on the main pipe, with the hole wall of the inlet duct mounting hole embedded in the annular groove. The flue body is provided with a guide channel at one end inside the main pipe. The guide channel has an inlet and an outlet. The oil fumes entering the flue body enter from the inlet of the guide channel, are guided by the guide channel, and are discharged from the outlet of the guide channel, and finally enter the main pipe. The outlet of the guide channel is provided with a flip-up cover and a limiting member for limiting the flip-up angle of the cover. The flip-up angle of the cover is less than 90°.

7. A shared anti-backflow external flue for residential buildings as described in claim 1, characterized in that, An inspection port is provided on the bottom side wall of the main pipeline.

8. A shared anti-backflow external flue for residential buildings as described in claim 1, characterized in that, The main pipeline has steel mesh laid inside its sidewall.

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