Hole-lifting-free integrated construction method for kitchen flue
By optimizing the size of the reserved flue opening and setting up measures such as scraper boards and enclosure boards, the problems of quality defects and leakage risks in flue construction were solved, achieving efficient and low-cost kitchen flue construction.
Patent Information
- Application Number
- CN202511431495.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2025-11-14
AI Technical Summary
In existing technologies, the narrow gap between the flue pipe and the installation opening during kitchen flue construction makes concrete vibration difficult, easily leading to quality defects. Furthermore, the difference in shrinkage characteristics between different batches of concrete can cause shrinkage cracks, increasing the risk of floor leakage.
The kitchen flue is constructed using an integrated method that eliminates the need for hanging holes. The size of the reserved flue opening is optimized to match the inner contour of the finished flue. Templates are used for reinforcement and concrete is formed in one go. A squeegee and a baffle are installed for sealing. Adhesive is injected in stages and a waterproof membrane is laid. A water tightness test is then conducted.
It improved the sealing and forming quality of the connection between the flue and the floor slab, reduced the risk of leakage, shortened the construction period, and reduced construction costs.
Smart Images
Figure CN120946068A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building construction technology, and in particular to an integrated construction method for kitchen flues that eliminates the need for hanging holes. Background Technology
[0002] In the construction of civil buildings, especially residential kitchens, the treatment of the joint where exhaust ducts penetrate floor slabs is a key technical aspect. Currently, the industry commonly uses the "suspended hole method": during the main structural construction phase, installation openings are pre-drilled in the floor slab. After the exhaust duct is installed and fixed, suspended formwork is used for support, and fine aggregate concrete, mortar, or other sealing materials are poured into the gap between the duct and the installation opening for final sealing. Although the "suspended hole method" is widely used in exhaust duct construction, it still has shortcomings, as detailed below: The "suspension hole method" for kitchen flue construction results in a narrow gap between the flue pipe and the installation hole, making vibration after concrete pouring extremely difficult. This leads to quality defects such as voids, honeycombing, and pitting inside the concrete after it sets. Furthermore, the sealing concrete and the existing structural concrete were poured in different batches, and the difference in their shrinkage characteristics can easily cause shrinkage cracks at the joint, increasing the risk of leakage in the kitchen floor slab and affecting the normal use of the kitchen and the durability of the building.
[0003] Therefore, how to improve the construction quality of kitchen flues and reduce the risk of leakage in kitchen floor slabs in the later stages is a technical problem that urgently needs to be solved in the existing technology. Summary of the Invention
[0004] The purpose of this invention is to address the problems of existing technologies that use the "suspension hole method" for kitchen flue construction. These methods result in a narrow gap between the flue pipe and the installation hole, making vibration after concrete pouring extremely difficult. This leads to quality defects such as voids, honeycombing, and pitting in the concrete after it sets. Furthermore, since the sealing concrete and the existing structural concrete are poured in different batches, their different shrinkage characteristics can easily cause shrinkage cracks at the joint, increasing the risk of leakage in the kitchen floor slab. This invention provides a non-suspension hole integrated construction method for kitchen flues.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A method for integrated construction of kitchen flues without the need for suspended holes includes the following steps: S1. Flue opening optimization: Based on the inner dimensions of the selected finished flue model, optimize the reserved flue opening size in the construction drawings so that the optimized reserved flue opening size matches the inner dimensions of the finished flue. S2. Flue Formwork Reinforcement: After making the flue opening formwork according to the optimized flue opening size, the opening formwork is installed at the reserved flue opening and a reinforcement device is set to prevent the opening formwork from shifting or deforming during concrete construction. S3. Concrete pouring: After the installation and reinforcement of the opening formwork are completed, concrete pouring is carried out to form the flue opening and the building structure floor slab in one go. S4. Flue Installation: After the concrete of the building's structural floor slab reaches the design strength, the structural floor slab in the flue opening area is leveled. After the flatness is qualified, the finished flue is hoisted to the formed flue opening and the flue is installed. S5. Joint sealing treatment: After the flue is installed, the joint between the flue and the flue opening is waterproofed. S6. Water tightness test: After the waterproof layer has cured, a water tightness test shall be conducted. Construction shall be completed after verifying that there is no leakage.
[0006] Preferably, the building floor slab structure is divided into a first forming zone and a second forming zone. The finished surface elevation of the floor slab structure in the first forming zone is consistent with the design elevation, while the finished surface elevation of the second forming zone is lower than that of the first forming zone. The flue opening is located in the second forming zone, and the area of the second forming zone is larger than the area of the flue opening. After the water tightness test is completed at the connection node between the finished flue and the flue opening, concrete is poured into the second forming zone so that the finished surface elevation of the second forming zone is consistent with that of the first forming zone.
[0007] Preferably, the bottom of the finished flue is provided with a support leg, the length of which is adjustable.
[0008] Preferably, a rubber pad layer is provided at the top of the finished flue.
[0009] Preferably, a baffle plate is also provided inside the flue opening. The baffle plate includes a connecting area, an upper baffle area, and a lower baffle area. The connecting area is fixed to the inner wall of the flue opening. The upper baffle area corresponds to the inner wall of the finished flue above the flue opening. The lower baffle area corresponds to the inner wall of the finished flue below the flue opening. An overflow groove is also provided on the inner wall of the finished flue. The lower baffle area extends into the overflow groove.
[0010] Preferably, a buffer pad is provided at the part where the building structure wall abuts against the finished flue, and the buffer pad is used to fill the gap between the building structure wall and the finished flue.
[0011] Preferably, the bottom of the buffer pad is flush with the finished surface elevation of the first molding area.
[0012] Preferably, the gap between the bottom edge of the finished flue against the building structure wall and the second forming area is filled with sealant.
[0013] Preferably, the inner wall of the finished flue is also horizontally provided with a scraper, and a limiting block is provided on the side of the upper baffle area facing the scraper. The limiting block has a right-angled triangular cross-section, and the inclined surface of the limiting block faces the scraper. The scraper and the limiting block have a first mating configuration and a second mating configuration. In the first engagement configuration, the scraper and the inclined surface of the limiting block are spaced apart; the support leg is adjusted to shorten its length, causing the finished flue to move downward as a whole. When the scraper and the inclined surface of the limiting block come into contact, the two form the second engagement configuration.
[0014] Preferably, the scraper is spaced apart from the bottom of the finished flue.
[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The integrated construction method for kitchen flue without hanging holes described in this invention optimizes the size of the reserved flue opening to match the inner dimensions of the finished flue. The finished flue can be directly placed on the building's floor slab during installation. Compared to the traditional "hanging hole method," this method reduces the need to fill the gap between the finished flue and the reserved flue opening with concrete. This results in higher quality concrete forming at the joint between the reserved flue opening and the finished flue, reducing the risk of leakage in the building's floor slab. Furthermore, by eliminating the need to fill the gap with concrete, it effectively improves construction efficiency, shortens the construction cycle, and reduces construction costs. 2. The integrated construction method for kitchen flue without hanging holes according to the present invention includes a scraper plate horizontally installed on the inner wall of the finished flue. A limiting block is provided on the side of the upper baffle facing the scraper plate. The limiting block has a right-angled triangle cross-section, and its inclined surface faces the scraper plate. The scraper plate and the limiting block have a first mating form and a second mating form. In the first mating form, the inclined surfaces of the scraper plate and the limiting block are spaced apart. Adjusting the support legs to shorten their length allows the finished flue to move downwards as a whole. When the scraper plate abuts against the inclined surface of the limiting block, the two form the second mating form. With this structural design, during the installation of the finished flue, after applying sealant, adjusting the mating state of the scraper plate and the limiting block from the first to the second mating form allows the scraper plate to compress the sealant, making the sealant fill the joint gap more evenly and fully, thereby further improving the filling quality and reducing the risk of oil fume leakage. Meanwhile, after the scraper and the limiting block change from the first mating form to the second mating form, the scraper can tightly abut against the limiting block, improving the tightness of the connection between the finished flue and the upper baffle area, thus further enhancing the sealing of the connection node between the flue and the flue opening; 3. The integrated construction method for kitchen flue openings without hanging holes, as described in this invention, includes a baffle plate inside the flue opening. The baffle plate comprises a connecting area, an upper baffle area, and a lower baffle area. The connecting area is fixed to the inner wall of the flue opening. The upper baffle area corresponds to the inner wall of the finished flue above the flue opening, and the lower baffle area corresponds to the inner wall of the finished flue below the flue opening. The inner wall of the finished flue also has an overflow groove, into which the lower baffle area extends. The sealing of the joint between the finished flue and the upper floor slab is performed in two stages. First, sealant is injected into the overflow groove to fill the gap between the lower baffle area and the overflow groove. Second, a double-layer 1.5mm thick waterproof membrane is laid at the joint between the finished flue and the flue opening, and a cement mortar protective layer is applied. This construction method improves the reliability of the sealing at the joint between the finished flue and the upper floor slab, further reducing the risk of oil fume leakage. On the other hand, when pouring concrete into the second forming zone, the upper baffle can be used to seal the gap between the finished flue and the flue opening, preventing concrete from flowing into the flue and ensuring the flue is unobstructed. Attached Figure Description
[0016] Figure 1 It is an isometric structural diagram of the finished flue installed at the flue opening; Figure 2 It is a cross-sectional structural diagram of the finished flue installed at the flue opening; Figure 3 This is a structural diagram of the first mating configuration between the scraper and the limiting block; Figure 4 This is a schematic diagram of the cooperation structure between the lower baffle area and the overflow groove; Figure 5 This is a schematic diagram of the second mating configuration between the scraper and the limiting block.
[0017] The markings in the diagram are: 1-First forming area, 2-Second forming area, 3-Support leg, 4-Rubber pad, 5-Baffle plate, 6-Connecting area, 7-Upper baffle area, 8-Lower baffle area, 9-Overflow groove, 10-Buffer pad, 11-Glue scraper, 12-Limiting block, 13-Finished flue. Detailed Implementation
[0018] The present invention will now be described in detail with reference to the accompanying drawings.
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0020] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] Example 1: As Figure 1 , Figure 2 and Figure 4As shown, the integrated construction method for kitchen flue without hanging holes according to the present invention includes the following steps: S1. Flue opening optimization: Based on the inner dimensions of the selected finished flue model 13, optimize the reserved flue opening dimensions in the construction drawings so that the optimized reserved flue opening dimensions match the inner dimensions of the finished flue model 13. S2. Flue Formwork Reinforcement: After making the flue opening formwork according to the optimized flue opening size, the opening formwork is installed at the reserved flue opening and a reinforcement device is set to prevent the opening formwork from shifting or deforming during concrete construction. S3. Concrete pouring: After the installation and reinforcement of the opening formwork are completed, concrete pouring is carried out to form the flue opening and the building structure floor slab in one go. S4. Flue Installation: After the concrete of the building structure floor slab reaches the design strength, the structural floor slab in the flue opening area is leveled. After the flatness is qualified, the finished flue 13 is hoisted to the formed flue opening and the flue is installed. S5. Joint sealing treatment: After the flue is installed, the joint between the flue and the flue opening is waterproofed. S6. Water tightness test: After the waterproof layer has cured, a water tightness test shall be conducted. Construction shall be completed after verifying that there is no leakage.
[0025] The integrated construction method for kitchen flues without suspended openings, as described in this invention, optimizes the size of the reserved flue opening to match the inner dimensions of the finished flue 13. The finished flue 13 can be directly placed on the building's floor slab during installation. Compared to the traditional "suspended opening method," this method reduces the need to fill the gap between the finished flue 13 and the reserved flue opening with concrete. This results in higher concrete quality at the joint between the reserved flue opening and the finished flue 13, reducing the risk of leakage in the building's floor slab. Furthermore, by eliminating the need to fill the gap between the finished flue 13 and the reserved flue opening with concrete, construction efficiency is effectively improved, the construction period is shortened, and construction costs are reduced.
[0026] Specifically, in this embodiment, the flue formwork uses a prefabricated steel frame. After the main building formwork is erected, the prefabricated steel frame is installed and fixed according to the opening positioning. The prefabricated flue 13 is installed after the completion of the main civil structure project and before the decoration project and other equipment and pipeline installation. The prefabricated flue 13 should be installed layer by layer from bottom to top. During installation, the ground must be leveled with 1:2 cement mortar. During the installation of the prefabricated flue 13, in order to prevent debris from falling into the flue, a sealing measure should be taken at the flue opening. After the finished flue 13 is installed, a 200mm*200mm right-angle stainless steel plate is installed along the inside corner of the flue and the floor slab to fix the finished flue 13. The stainless steel plate is a finished product to reduce the risk of leakage.
[0027] During the joint sealing process, a double-layer 1.5mm thick waterproof membrane is laid at the joint between the finished flue 13 and the flue opening, and a cement mortar protective layer is applied on the outside. The inside corner between the finished flue 13 and the floor slab is rounded with an R50 radius.
[0028] During the water tightness test, the water level should be no less than 20mm, and the water retention time should be no less than 24 hours. During the water retention period, a designated person should observe the water level regularly, focusing on checking for leaks around the flue and in the corresponding locations downstairs. If leaks are found, the location should be marked immediately, the cause analyzed, and the issue addressed until the water tightness test is passed.
[0029] As a preferred embodiment, based on the above method, the building floor slab structure is further divided into a first forming area 1 and a second forming area 2. The finished surface elevation of the floor slab structure in the first forming area 1 is consistent with the design elevation, and the finished surface elevation of the second forming area 2 is lower than the finished surface elevation of the first forming area 1. The flue opening is set in the second forming area 2, and the area of the second forming area 2 is larger than the area of the flue opening. After the water tightness test is completed at the connection node between the finished flue 13 and the flue opening, concrete is poured into the second forming area 2 so that the finished surface elevation of the second forming area 2 is consistent with the finished surface elevation of the first forming area 1.
[0030] In this embodiment, the building floor slab structure is divided into the first forming area 1 and the second forming area 2. During the installation of the flue, since the finished surface elevation of the second forming area 2 is lower than that of the first forming area 1, it provides a wider vertical operating space for construction. This facilitates the erection and movement of the finished flue 13 and improves the operational convenience of the installation of the finished flue 13. Furthermore, in this embodiment, after the water tightness test is completed at the connection node between the finished flue and the flue opening, the operation of pouring concrete into the second forming area 2 can replace the mortar protective layer applied after the waterproof membrane is laid. Compared with the above embodiment, which requires applying a mortar protective layer to the entire kitchen floor slab, this saves cement mortar materials. At the same time, the construction period is shortened due to the significant reduction in construction area.
[0031] As a preferred embodiment, based on the above method, the bottom of the finished flue 13 is provided with a support leg 3, the length of which is adjustable.
[0032] Specifically, in this embodiment, the support leg 3 is a bolt-supported structure, and its length can be adjusted by rotating the bolt. During the flue installation process, the length of the support leg 3 can be flexibly adjusted according to the actual situation of the flue opening and the flatness of the floor slab to ensure the verticality and stability of the flue installation. This improves the convenience of flue installation. On the other hand, by adjusting the length of the support leg 3 in this embodiment, the gap between the top of the finished flue 13 and the upper floor slab can also be reduced, thereby improving the quality of the sealing treatment of the joint between the top of the flue and the upper floor slab, and further reducing the risk of leakage in the building floor slab.
[0033] As a preferred embodiment, based on the above method, a rubber pad 4 is further provided on the top of the finished flue 13. This structural arrangement protects the top of the flue during installation, preventing damage from impacts with the upper floor slab. Furthermore, the rubber pad 4, with its elasticity, buffers vibrations and noise transmission between the flue and the upper floor slab during use, improving living comfort. Simultaneously, the rubber pad 4 also improves the sealing of the connection point between the flue and the upper floor slab, reducing the risk of oil fume leakage.
[0034] Example 2: As Figure 2 and Figure 4 As shown, the integrated construction method for kitchen flue without hanging holes according to the present invention further includes, on the basis of the above method, a baffle plate 5 is also provided inside the flue opening. The baffle plate 5 includes a connecting area 6, an upper baffle area 7, and a lower baffle area 8. The connecting area 6 is fixed to the inner wall of the flue opening. The upper baffle area 7 corresponds to the inner wall of the finished flue 13 above the flue opening. The lower baffle area 8 corresponds to the inner wall of the finished flue 13 below the flue opening. The inner wall of the finished flue 13 is also provided with an overflow groove 9, and the lower baffle area 8 extends into the overflow groove 9.
[0035] Specifically, the connection area 6 is fixed to the inner wall of the flue opening using nails. In this embodiment, the sealing of the joint between the finished flue 13 and the upper floor slab is carried out in two stages. First, sealant is injected into the overflow groove 9 to fill the gap between the lower baffle area 8 and the overflow groove 9. Second, a double-layer 1.5mm thick waterproof membrane is laid at the joint between the finished flue 13 and the flue opening, and a cement mortar protective layer is applied on the outside. This construction method can improve the reliability of the sealing of the joint between the finished flue 13 and the upper floor slab, and further reduce the risk of oil fume leakage.
[0036] On the other hand, in this embodiment, when pouring concrete into the second forming area 2, the upper baffle area 7 can be used to seal the gap between the finished flue 13 and the flue opening, preventing concrete from flowing into the flue and ensuring the flue is unobstructed.
[0037] Example 3: As Figures 2 to 5 As shown, the integrated construction method for kitchen flue without hanging holes according to the present invention, based on the above method, further includes a buffer pad 10 at the part where the building structure wall abuts against the finished flue 13. The buffer pad 10 is used to fill the gap between the building structure wall and the finished flue 13. This structural arrangement, on the one hand, avoids rigid collisions caused by direct contact between the building structure wall and the finished flue 13 during flue installation, protecting the finished flue 13 from damage; on the other hand, the buffer pad 10 filling the gap between the two enhances the stability of the flue after installation, preventing the flue from shaking or shifting.
[0038] In a preferred embodiment, based on the above method, the bottom of the buffer pad 10 is further set to be flush with the finished surface elevation of the first molding area 1. The gap between the bottom edge of the finished flue 13 against the building structure wall and the second molding area 2 is filled with sealant.
[0039] In this embodiment, it is considered that in the sealing treatment of the connection node between the flue and the flue opening, the connection gap between the bottom edge of the finished flue 13 near the building structure wall and the second molding area 2 is relatively narrow. In the operation of filling the second molding area 2 with concrete, it is difficult to ensure that the concrete can completely fill the connection gap, thus affecting the sealing effect.
[0040] Based on this, in this embodiment, the bottom of the buffer pad 10 is flush with the finished surface elevation of the first molding area 1. The buffer pad 10 can limit the filling range of the gap between the bottom edge of the finished flue 13 against the building structure wall and the second molding area 2, making the filling of this gap easier to control. At the same time, the sealant has good fluidity and adhesion, which can better fill the narrow gap, thereby effectively improving the sealing performance of the joint at the joint against the building structure wall, and further reducing the risk of oil fume leakage.
[0041] In a preferred embodiment, based on the above method, the inner wall of the finished flue 13 is further provided with a scraper 11 horizontally, and a limiting block 12 is provided on the side of the upper baffle 7 facing the scraper 11. The cross-section of the limiting block 12 is set as a right-angled triangle, and the inclined surface of the limiting block 12 faces the scraper 11. The scraper 11 and the limiting block 12 have a first mating form and a second mating form. In the first engagement configuration, the scraper 11 and the inclined surfaces of the limiting block 12 are spaced apart; the support leg 3 is adjusted to shorten its length, causing the finished flue 13 to move downward as a whole. When the scraper 11 and the inclined surfaces of the limiting block 12 come into contact, the two form the second engagement configuration.
[0042] Specifically, in this embodiment, during the installation of the finished flue 13, it is necessary to adjust the length of the support leg 3 to ensure that the scraper 11 and the limiting block 12 are in the first mating state after installation. After injecting sealant into the gap between the bottom edge of the finished flue 13 against the building structure wall and the second forming area 2, the length of the support leg 3 is adjusted again to lower the finished flue 13 as a whole. The process stops when the scraper 11 and the limiting block 12 form a second mating configuration. After injection, the mating state of the scraper 11 and the limiting block 12 is adjusted. During the transition from the first to the second mating configuration, the scraper 11 can compress the sealant, making it more evenly and fully filled in the gap, thereby further improving the filling quality and reducing the risk of oil fume leakage. Simultaneously, after the scraper 11 and the limiting block 12 transition from the first to the second mating configuration, the scraper 11 can tightly abut against the limiting block 12, improving the tightness of the connection between the finished flue 13 and the upper baffle area 7, thus further enhancing the sealing of the connection point between the flue and the flue opening.
[0043] It should be noted that in this embodiment, the end of the scraper 11 that contacts the limiting block 12 is made of elastic rubber material; during the operation of adjusting the length of the support leg 3 to move the finished flue 13 downward as a whole, the lower baffle area 8 is always in the overflow groove 9.
[0044] As a preferred embodiment, based on the above method, the scraper 11 is further spaced apart from the bottom of the finished flue 13. This structural arrangement improves the stability of the scraper 11 structure and prevents the connection between the scraper 11 and the finished flue 13 from loosening due to stress concentration when the scraper 11 and the limiting block 12 form a second mating configuration.
[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A method for integrated construction of kitchen flues without the need for suspended holes, characterized in that, Includes the following steps: S1. Flue opening optimization: Based on the inner dimensions of the selected finished flue model, optimize the reserved flue opening size in the construction drawings so that the optimized reserved flue opening size matches the inner dimensions of the finished flue. S2. Flue Formwork Reinforcement: After making the flue opening formwork according to the optimized flue opening size, the opening formwork is installed at the reserved flue opening and a reinforcement device is set to prevent the opening formwork from shifting or deforming during concrete construction. S3. Concrete pouring: After the installation and reinforcement of the opening formwork are completed, concrete pouring is carried out to form the flue opening and the building structure floor slab in one go. S4. Flue Installation: After the concrete of the building's structural floor slab reaches the design strength, the structural floor slab in the flue opening area is leveled. After the flatness is qualified, the finished flue is hoisted to the formed flue opening and the flue is installed. S5. Joint sealing treatment: After the flue is installed, the joint between the flue and the flue opening is waterproofed. S6. Water tightness test: After the waterproof layer has cured, a water tightness test shall be conducted. Construction shall be completed after verifying that there is no leakage.
2. The integrated construction method for kitchen flue without hanging holes according to claim 1, characterized in that, The building floor slab structure is divided into a first forming zone and a second forming zone. The finished surface elevation of the floor slab structure in the first forming zone is consistent with the design elevation, while the finished surface elevation of the second forming zone is lower than that of the first forming zone. The flue opening is located in the second forming zone, and the area of the second forming zone is larger than the area of the flue opening. After the water tightness test is completed at the connection node between the finished flue and the flue opening, concrete is poured into the second forming zone to make the finished surface elevation of the second forming zone consistent with that of the first forming zone.
3. The integrated construction method for kitchen flue without hanging holes according to claim 2, characterized in that, The bottom of the finished flue is equipped with support legs, the length of which is adjustable.
4. The integrated construction method for kitchen flue without hanging holes according to claim 3, characterized in that, The top of the finished flue is equipped with a rubber pad layer.
5. The integrated construction method for kitchen flue without hanging holes according to claim 4, characterized in that, A baffle plate is also installed inside the flue opening. The baffle plate includes a connecting area, an upper baffle area, and a lower baffle area. The connecting area is fixed to the inner wall of the flue opening. The upper baffle area corresponds to the inner wall of the finished flue above the flue opening. The lower baffle area corresponds to the inner wall of the finished flue below the flue opening. An overflow groove is also provided on the inner wall of the finished flue. The lower baffle area extends into the overflow groove.
6. The integrated construction method for kitchen flue without suspended holes according to claim 5, characterized in that, A buffer pad is provided at the part where the building structure wall and the finished flue meet, and the buffer pad is used to fill the gap between the building structure wall and the finished flue.
7. The integrated construction method for kitchen flue without suspended holes according to claim 6, characterized in that, The bottom of the buffer pad is flush with the finished surface elevation of the first molding area.
8. The integrated construction method for kitchen flue without suspended holes according to claim 7, characterized in that, The gap between the bottom edge of the finished flue against the building structure wall and the second forming area is filled with sealant.
9. The integrated construction method for kitchen flue without hanging holes according to claim 8, characterized in that, The inner wall of the finished flue is also horizontally equipped with a scraper. A limiting block is provided on the side of the upper baffle area facing the scraper. The limiting block has a right-angled triangular cross-section, and its inclined surface faces the scraper. The scraper and the limiting block have a first mating configuration and a second mating configuration. In the first engagement configuration, the scraper and the inclined surface of the limiting block are spaced apart; the support leg is adjusted to shorten its length, causing the finished flue to move downward as a whole. When the scraper and the inclined surface of the limiting block come into contact, the two form the second engagement configuration.
10. The integrated construction method for kitchen flue without suspended openings according to claim 9, characterized in that, The scraper is spaced apart from the bottom of the finished flue.