Downward-folding kitchen flue structure

By using a combination of metal smoke pipes and concrete modules in the kitchens of stacked apartments, the problem of unified smoke exhaust in these kitchens was solved, achieving a centralized smoke exhaust design that saves space and improves construction safety.

CN224106804UActive Publication Date: 2026-04-10BEIJING CHENGJIAN YUANDONG CONSTR INVESTMENT GRP CO +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-16
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing technology cannot achieve unified centralized smoke exhaust when the kitchens of the upper and lower units are not in the same location, which requires separate smoke exhaust design, wasting space and increasing costs.

Method used

Multiple metal flue pipes are connected in series, combined with concrete modules and fireproof sealant to achieve the connection of horizontal and vertical flue pipes. The annular protrusions and grooves of the concrete modules are used to seal the ends of the flue pipes, and flange connections are used to ensure sealing and reliability.

Benefits of technology

It achieves a unified centralized smoke exhaust design for kitchens in stacked units that are not on the same vertical plane, saving space, avoiding leakage risks, meeting personalized design needs, and improving construction safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kitchen flue structure of a lower overlapping household, which is applied to the situation that kitchens of an upper overlapping household and a lower overlapping household are not located at the same vertical position indoors, is formed by sequentially connecting a plurality of sections of metal smoke pipes in series, and comprises a horizontally mounted metal smoke pipe and a vertically mounted metal smoke pipe, according to two adjacent metal smoke pipes at the corner of the kitchen flue structure, a side opening is formed in the side face of one end of one metal smoke pipe, the end, close to the side opening, of the metal smoke pipe is blocked through a concrete module, one end of the other metal smoke pipe is connected with the side opening, and the concrete module comprises a bottom plate; a first annular bulge and a second annular bulge are arranged on the upper surface of the bottom plate, an annular groove matched with the metal smoke tube is formed between the first annular bulge and the second annular bulge, and one end part of the metal smoke tube is embedded into the annular groove, so that the end part of the metal smoke tube is blocked. Concentrated smoke exhaust is achieved under the condition that kitchens of upper and lower overlapped households are not in the same vertical plane, and the indoor area is saved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to building technical field especially, it relates to a kitchen flue structure of under stack house. BACKGROUND

[0002] Generally, the upper and lower kitchens are usually in the same position in the house, and the current standard atlas is designed for this design method. In the conventional construction project, the kitchen adopts the cement flue. Since the cement flue cannot be installed horizontally, it only has a vertical installation process. When the stack house project is encountered, it cannot meet the situation that the upper and lower kitchens are not in the same position in the house, that is, it cannot be designed and constructed by unified centralized smoke exhaust. The upper and lower kitchens need to be designed separately for smoke exhaust, which not only reduces the indoor area but also increases the cost. SUMMARY

[0003] Therefore, the utility model aims at providing a kitchen flue structure of under stack house, which has a simple structure and realizes centralized smoke exhaust when the upper and lower kitchens are not in the same vertical plane, thereby saving the indoor area. To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0004] A kitchen flue structure of under stack house is applied to the situation that the upper and lower kitchens are not in the same vertical position in the house. The kitchen flue structure is composed of multiple metal flues connected in series. The tail part of the kitchen flue structure is used to communicate with the bottom of the flue of the upper stack house. The kitchen flue structure includes horizontally installed metal flues and vertically installed metal flues. At the bending part of the kitchen flue structure, two adjacent metal flues are provided with a side opening on one end of one metal flue, and the end of the metal flue near the side opening is plugged with a concrete module. The other end of the other metal flue is connected to the side opening. The concrete module includes a bottom plate. The upper surface of the bottom plate is provided with a first annular protrusion and a second annular protrusion. The second annular protrusion is located outside the first annular protrusion. An annular groove matched with the metal flue is formed between the first annular protrusion and the second annular protrusion. One end of the metal flue is embedded in the annular groove, so that the end of the metal flue is plugged.

[0005] Further, a protruding part is arranged on the side wall of the second annular protrusion. The protruding part is located in the annular groove. The number of the protruding parts is multiple. The multiple protruding parts are arranged at intervals. The cross section of the protruding part is triangular or semicircular.

[0006] Further, the annular groove is also filled with fireproof mortar, which is arranged between the metal flue and the second annular protrusion.

[0007] Further, the side wall of the second annular protrusion is provided with a plurality of strip-shaped grooves at the inner wall of the annular groove, the cross-sectional area of the strip-shaped grooves is T-shaped, and the distance between the horizontal section of the T-shaped cross section and the first annular protrusion is greater than the distance between the vertical section of the T-shaped cross section and the first annular protrusion.

[0008] Further, the concrete module further comprises a first extension plate and a second extension plate, the first extension plate is located at the first end of the bottom plate, the second extension plate is located at the second end of the bottom plate, the first extension plate is provided with a first through hole, and the second extension plate is provided with a second through hole.

[0009] Further, the concrete module is integrally formed.

[0010] Further, the concrete module has a steel wire mesh with a steel wire diameter of 1mm, and the concrete module is formed by pouring M15 cement mortar.

[0011] Further, the metal flue is a galvanized metal flue, the metal flue is a square tube or a circular tube, and the annular groove is also square or circular corresponding to the metal flue.

[0012] Further, the metal flue is coated with a polyurethane anticorrosive paint layer.

[0013] Further, the metal flue is wrapped with 100mm thick rock wool or glass wool for heat insulation.

[0014] The utility model discloses the beneficial effect is:

[0015] The kitchen flue structure of the lower stacked house of the utility model realizes unified and concentrated smoke exhaust design construction under the condition that the kitchen of the upper stacked house and the kitchen of the lower stacked house are not in the same vertical plane, and the kitchen of the upper stacked house and the kitchen of the lower stacked house do not need to be designed for smoke exhaust separately, thereby saving indoor area. DRAWINGS

[0016] Figure 1 It is the plane schematic view of the concrete module of the kitchen flue structure of the lower stacked house of an embodiment of the utility model;

[0017] Figure 2 It is Figure 1 the sectional view of 1-1;

[0018] Figure 3 It is Figure 1 the sectional view of 2-2;

[0019] Figure 4 It is Figure 1A cross-sectional view of the middle 3-3;

[0020] Figure 5 A connection diagram of two adjacent metal flues of the kitchen flue structure of the lower stacked house according to an embodiment of the present application;

[0021] Among them:

[0022] 101 bottom plate;

[0023] 1011 first annular protrusion; 1012 second annular protrusion; 1013 annular groove;

[0024] 1014 first extension plate; 10141 first through hole; 1015 second extension plate; 10151 second through hole;

[0025] 102 first metal flue; 1021 first end;

[0026] 103 second metal flue. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the kitchen flue structure of the lower stacked house will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0028] Referring to Figures 1 to 5 , the kitchen flue structure of the lower stacked house according to an embodiment of the present application is applied to the case that the kitchen of the upper stacked house and the kitchen of the lower stacked house are not at the same vertical position in the house.

[0029] The kitchen flue structure is composed of a plurality of metal flues connected in series, the tail of the kitchen flue structure is used to communicate with the bottom of the flue of the upper stacked house, the kitchen flue structure includes horizontally installed metal flues and vertically installed metal flues, at the bending position of the kitchen flue structure, two adjacent metal flues, one end of one metal flue is provided with a side opening, the end of the metal flue near the side opening is plugged with a concrete module, and the other end of the other metal flue is connected to the side opening.

[0030] The concrete module includes a bottom plate 101, the upper surface of the bottom plate 101 is provided with a first annular protrusion 1011 and a second annular protrusion 1012. The second annular protrusion 1012 is placed on the periphery of the first annular protrusion 1011, and the first annular protrusion 1011 and the second annular protrusion 1012 form an annular groove 1013 matched with the metal flue, one end of the metal flue is embedded in the annular groove 1013, so that the end of the metal flue is plugged.

[0031] As Figure 5As shown, a side opening is provided on one end (right end in the figure) of the first metal smoke pipe 102. The first end 1021 (right end in the figure) of the first metal smoke pipe 102 located near the side opening can be sealed with a concrete module. One end (lower end in the figure) of the second metal smoke pipe 103 is connected to the side opening. This method also realizes the series connection of the first metal smoke pipe 102 and the second metal smoke pipe 103. When the kitchens of the upper and lower units are not in the same vertical plane, a unified centralized smoke exhaust design and construction is achieved, and the kitchens of the upper and lower units no longer need to be designed with separate smoke exhaust systems, saving indoor space.

[0032] In other embodiments, a side opening can be provided on the side of one end (lower end in the figure) of the second metal smoke pipe 103. The first end (lower end in the figure) of the second metal smoke pipe 103 located near the side opening can be sealed with a concrete module. One end (right end in the figure) of the first metal smoke pipe 102 is connected to the side opening. This method also realizes the series connection of the first metal smoke pipe 102 and the second metal smoke pipe 103.

[0033] like Figure 1 As shown, the concrete module also includes a first extension plate 1014 and a second extension plate 1015. The first extension plate 1014 is located at the first end (upper end in the figure) of the base plate 101, and the second extension plate 1015 is located at the second end (lower end in the figure) of the base plate 101. A first through hole 10141 is provided on the first extension plate 1014, and a second through hole 10151 is provided on the second extension plate 1015. The first extension plate 1014 and the second extension plate 1015 further facilitate the fixing of the concrete module to the metal smoke pipe, resulting in better sealing. Bolts can be used to pass through the first through hole 10141 and the second through hole 10151 to fix the concrete module to the metal smoke pipe, making the fixing method more reliable.

[0034] The concrete modules can be manufactured using a single-piece molding process. A 1mm diameter wire mesh can be installed inside the concrete module, which is then poured using M15 cement mortar. Prefabricated molds can be fabricated on-site (for large-scale production, prefabricated plastic molds can be used). A release agent is applied inside the mold, and a φ1 wire mesh is used as part of the device's crack-resistant design. M15 premixed mortar is poured and vibrated to ensure compaction. After demolding, the device is installed on-site. The φ1 wire mesh, combined with the pouring and compaction of M15 premixed mortar, improves the strength and crack resistance of the concrete modules.

[0035] The metal flue is a galvanized metal flue, and the metal flue can be a square tube or a circular tube, and the annular groove 1013 is also square or circular corresponding to the metal flue. The metal flue is coated with a polyurethane anticorrosive paint layer, and the metal flue is wrapped with 100mm thick rock wool or glass wool for heat insulation. Adjacent metal flues installed horizontally can also be connected by flange connection; adjacent metal flues installed vertically can also be connected by flange connection; the side opening and the metal flue can also be connected by flange connection.

[0036] As another implementable manner, the annular groove 1013 can also be filled with fireproof mortar, which is placed between the metal flue and the second annular protrusion 1012. Filling the fireproof mortar further improves the reliability of the concrete module sealing the metal flue.

[0037] At the position where the flue needs to be horizontally turned, the above-mentioned special structure (i.e. the slot type structure) is arranged, the galvanized metal flue (with a polyurethane waterproof and anticorrosive coating) is inserted into the special structure, the slot is tightly sealed with fireproof mortar, and the metal flue is wrapped with 100mm thick rock wool or glass wool for heat insulation. By using the above-mentioned way, the connection construction is safe and reliable, there is no risk of leakage and later quality and safety risk, and the individual design requirements of the stacked house are met. The connection position of the metal flue and the cement flue adopts a reliable connection treatment method, which meets the individual design and construction requirements of the stacked house, and the A-grade flame-retardant temperature insulation cotton can effectively protect the adjacent decoration and functional construction such as later ceiling from high temperature roasting of oil smoke, avoiding later quality and safety hidden dangers.

[0038] As a preferred implementable manner, the second annular protrusion 1012 is provided with a protruding part at the side wall, the protruding part is located in the annular groove 1013, the number of the protruding parts is multiple, the multiple protruding parts are arranged at intervals, and the cross section of the protruding part is triangular or semicircular.

[0039] The protruding part can limit the metal flue in the annular groove 1013, prevent displacement between the concrete module and the metal flue, and make the concrete module fixed more firmly. The heights of the multiple protruding parts in the annular groove 1013 are the same.

[0040] As another preferred implementation, the side wall of the second annular protrusion 1012 can also be provided with a plurality of strip-shaped grooves at the inner wall of the annular groove 1013, the cross-sectional area of the strip-shaped grooves is T-shaped, the distance between the horizontal section of the T-shaped and the first annular protrusion 1011 is greater than the distance between the vertical section of the T-shaped and the first annular protrusion 1011. The depths of the plurality of strip-shaped grooves are the same; the lengths of the plurality of strip-shaped grooves are the same in the vertical direction. The strip-shaped grooves with T-shaped cross-sectional area are more convenient for filling fireproof mortar, and can effectively improve the sealing effect of the fireproof mortar. The upper part of the strip-shaped groove is an open structure, and the fireproof mortar can be filled from the upper opening of the strip-shaped groove.

[0041] The side wall of the second annular protrusion 1012 can be provided with both a plurality of protrusions and a plurality of strip-shaped grooves; of course, the side wall of the second annular protrusion 1012 can only be provided with a plurality of protrusions; or, the side wall of the second annular protrusion 1012 can only be provided with a plurality of strip-shaped grooves.

[0042] The kitchen flue structure of the lower stacked house of the above embodiments realizes unified and centralized smoke exhaust design and construction under the condition that the kitchen of the upper stacked house and the kitchen of the lower stacked house are not in the same vertical plane, the kitchen of the upper stacked house and the kitchen of the lower stacked house do not need to be designed separately for smoke exhaust, the indoor area is saved; the connection construction is safe and reliable, there is no risk of leakage and quality and safety risk in the later period, and the personalized design requirements of the stacked house are met. The reliable connection of the connection position of the metal flue and the concrete module is realized, the A-grade flame-retardant temperature-insulating cotton can effectively protect the adjacent decoration and functional construction such as the later suspended ceiling from being roasted by oil smoke at high temperature, and the quality and safety hidden dangers in the later period are avoided.

[0043] It should be noted that the above embodiments and the features in the embodiments can be combined with each other without conflict.

[0044] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A kitchen flue structure for a lower stacked house, which is applied to a case where a kitchen of an upper stacked house and a kitchen of a lower stacked house are not in the same vertical position in a house, characterized in that, The kitchen flue structure is composed of multiple metal flues connected in series, the tail of the kitchen flue structure is used to communicate with the bottom of the upper flue, the kitchen flue structure includes horizontally installed metal flues and vertically installed metal flues, at the bending position of the kitchen flue structure, two adjacent metal flues, one end of one metal flue is provided with a side opening, the end of the metal flue near the side opening is blocked by a concrete module, the other end of the other metal flue is connected to the side opening, the concrete module includes a bottom plate (101), the upper surface of the bottom plate (101) is provided with a first annular protrusion (1011) and a second annular protrusion (1012), the second annular protrusion (1012) is located at the periphery of the first annular protrusion (1011), an annular groove (1013) matched with the metal flue is formed between the first annular protrusion (1011) and the second annular protrusion (1012), one end of the metal flue is embedded in the annular groove (1013), so that the end of the metal flue is blocked.

2. The undercounter kitchen hood structure according to claim 1, characterized in that, The side wall of the second annular protrusion (1012) is provided with a protrusion, the protrusion is located in the annular groove (1013), the number of the protrusions is multiple, the multiple protrusions are arranged at intervals, the cross section of the protrusion is triangular or semicircular.

3. The undercounter kitchen hood structure according to claim 1, characterized in that, The annular groove (1013) is also filled with fireproof mortar, the fireproof mortar is located between the metal flue and the second annular protrusion (1012).

4. The undercounter kitchen hood structure according to claim 3, characterized in that The side wall of the second annular protrusion (1012) is provided with multiple strip-shaped grooves at intervals, the strip-shaped grooves are located at the inner wall of the annular groove (1013), the cross-sectional area of the strip-shaped groove is T-shaped, the distance between the horizontal section of the T-shaped and the first annular protrusion (1011) is greater than the distance between the vertical section of the T-shaped and the first annular protrusion (1011).

5. The undercounter kitchen hood structure according to claim 1, characterized in that, The concrete module further includes a first extension plate (1014) and a second extension plate (1015), the first extension plate (1014) is located at the first end of the bottom plate (101), the second extension plate (1015) is located at the second end of the bottom plate (101), the first extension plate (1014) is provided with a first through hole (10141), the second extension plate (1015) is provided with a second through hole (10151).

6. The kitchen flue structure of claim 1-5, wherein The concrete module is integrally formed.

7. The undercounter kitchen hood structure according to claim 6, characterized in that The concrete module has a steel wire mesh, the diameter of the steel wire is 1mm, the concrete module is made of M15 cement mortar.

8. The kitchen flue structure of claim 1-5, wherein The metal flue is a galvanized metal flue, the metal flue is a square tube or a circular tube, the annular groove (1013) is also square or circular corresponding to the metal flue.

9. The kitchen flue structure of claim 1-5, wherein The metal flue is coated with a polyurethane anticorrosive paint layer.

10. The undercounter kitchen hood structure according to claim 9, characterized in that The metal flue is wrapped with 100mm thick rock wool or glass wool for heat insulation.