Kitchen smoke exhaust device easy to disassemble

Abstract

The utility model discloses a kitchen smoke exhaust device easy to disassemble, and relates to a smoke exhaust device. At present, a kitchen smoke exhaust device is often sleeved at a smoke exhaust port of a smoke exhaust ventilator by adopting a corrugated pipe and is easy to damage, the installation process needs to be very careful, and the installation efficiency is influenced. The smoke exhaust device comprises a smoke exhaust pipeline and a smoke exhaust seat used for connecting a smoke exhaust ventilator and the smoke exhaust pipeline, wherein the smoke exhaust pipeline comprises a smoke exhaust pipe and a corrugated pipe connected with the smoke exhaust pipe; a smoke exhaust seat opening is formed in the upper end of the smoke exhaust seat, a fixing mechanism is arranged at the smoke exhaust seat opening, and a connecting mechanism is arranged at the lower end of the smoke exhaust pipe; and the smoke exhaust pipe connecting mechanism is detachably connected with the fixing mechanism. According to the technical scheme, the smoke exhaust device is more convenient and faster to disassemble, assemble, maintain and replace parts, and the use experience of a user is greatly improved. Meanwhile, according to the scheme, the sealing performance and durability of the device are emphasized, and different kitchen environments and user requirements are met.

Description

Technical Field

[0001] The utility model relates to a smoke exhaust device, in particular to an easily detachable kitchen smoke exhaust device. Background Art

[0002] With the improvement of people's living standards and the increasing popularity of kitchen equipment, the requirements for the performance and usability of kitchen smoke exhaust devices are also getting higher and higher. The design of traditional smoke exhaust devices often focuses on the smoke exhaust effect, while ignoring the convenience of disassembly, installation and maintenance.

[0003] The kitchen smoke exhaust device includes a range hood and a smoke exhaust pipe for exhausting the cooking fumes to the outside. The smoke exhaust pipe is prone to aging and damage, especially the corrugated pipe located outside. It needs to be replaced. At present, the corrugated pipe is often sleeved at the smoke exhaust port of the range hood and fixed by a clamp or the like to realize the connection between the corrugated pipe and the range hood. The corrugated pipe is soft and easily damaged. The installation process requires great care, which affects the installation efficiency. Moreover, air leakage is likely to occur at the connection between the range hood and the corrugated pipe, polluting the kitchen and reducing the user experience. Content of the Utility Model

[0004] The technical problem to be solved and the technical task proposed by the utility model are to improve and perfect the existing technical solution, and provide an easily detachable kitchen smoke exhaust device for the purpose of facilitating the disassembly and assembly of the smoke exhaust pipe. To this end, the utility model adopts the following technical solutions.

[0005] An easily detachable kitchen smoke exhaust device includes a smoke exhaust pipe and a smoke exhaust seat for connecting the range hood and the smoke exhaust pipe. The smoke exhaust pipe includes a smoke exhaust tube and a corrugated pipe connected thereto. The upper end of the smoke exhaust seat is a smoke exhaust seat opening, and a fixing mechanism is provided at the smoke exhaust seat opening. A connecting mechanism is provided at the lower end of the smoke exhaust tube. The connecting mechanism of the smoke exhaust tube is detachably connected to the fixing mechanism. In this technical solution, the corrugated pipe is sleeved in the smoke exhaust tube. When the corrugated pipe needs to be replaced, it is removed together with the smoke exhaust tube, and then the new smoke exhaust tube connected with the corrugated pipe is installed on the smoke exhaust seat together. The installation is convenient. Moreover, the corrugated pipe can be pre-sleeved on the smoke exhaust tube at the factory, ensuring the sealing performance at the connection between the corrugated pipe and the smoke exhaust tube, and there is no need to worry about air leakage at the connection between the corrugated pipe and the smoke exhaust tube, thereby improving the smoke exhaust efficiency. In addition, the smoke exhaust tube has much better strength than the corrugated pipe. The smoke exhaust tube is connected to the smoke exhaust seat, and the pressure and vibration at the connection are often greater. When the smoke exhaust tube has better strength than the corrugated pipe and can withstand greater pressure and vibration, the overall device is more durable. This technical solution makes the smoke exhaust device more convenient and fast in disassembly, installation, maintenance and replacement of components, greatly improving the user experience. At the same time, this scheme also pays attention to the sealing performance and durability of the device to meet different kitchen environments and user needs.

[0006] As a preferred technical means: The fixing mechanism includes a convex block, a convex column and a limiting member that protrude outward. The convex column is located below the middle of the convex block, and the limiting member is located below one end of the convex block. The connecting mechanism includes a connecting ring with a diameter larger than the diameter formed by multiple convex blocks. Multiple inwardly protruding connecting portions that match the convex blocks are provided on the connecting ring. A positioning groove that matches the convex column is formed by concave downward at the middle position of the top surface of the connecting portion. One end of the connecting portion is inclined downward to form a guiding portion. When installing the smoke exhaust pipe, rotate the smoke exhaust pipe. The guiding portion of the connecting portion slides over the convex block. Under the action of the guiding portion, the smoke exhaust pipe gradually descends while rotating. After the bottom surface of the convex block of the smoke exhaust seat fits with the top surface of the connecting portion, continue to rotate the smoke exhaust pipe until the convex column is embedded in the positioning groove to complete the installation of the smoke exhaust pipe. Before rotating the smoke exhaust pipe, the smoke exhaust pipe needs to descend so that the smoke exhaust seat opening is inserted into the connecting ring, and then the connecting mechanism located on the smoke exhaust pipe is screwed into the fixing mechanism of the smoke exhaust seat. The connecting portion is located below the convex block until the positioning groove is locked with the convex column. The smoke exhaust pipe descends and the connecting ring covers the smoke exhaust seat opening and the fixing mechanism, making the installation process intuitive and simple. The user only needs to align the smoke exhaust seat opening with the connecting ring and then let the smoke exhaust pipe descend naturally to start the installation process. By rotating the smoke exhaust pipe, the connecting mechanism can be smoothly screwed into the fixing mechanism. During this process, the cooperation between the connecting portion and the convex block ensures the smoothness of rotation, and the locking of the positioning groove and the convex column realizes precise positioning, which not only improves the installation accuracy but also enables each installation to achieve the expected sealing effect. The limiting member can effectively prevent the convex column from continuing to rotate out of the positioning groove due to excessive force and missing the matching position, which requires re-operation, improves the installation efficiency, and also ensures a stable fixed state after each installation, making the installation process safer and more reliable. Since the installation process is simple and easy to operate, the user can quickly complete the installation of the smoke exhaust pipe without complex tools or professional skills, which not only saves the user's time and energy but also improves the installation efficiency.

[0007] As a preferred technical means: The convex column and the convex block are separately arranged. An upward groove is provided on the bottom surface of the middle part of the convex block, and the convex column is provided below the groove. Due to the separate arrangement method, the convex column with a smaller diameter has a certain elastic deformation ability, and the user does not need to apply too much force during installation to make the smoke exhaust pipe and the smoke exhaust seat fit tightly. This not only reduces the installation and disassembly burden of the user, makes the installation easy and does not require too much force, but also avoids problems such as part damage or loose installation caused by excessive force, effectively reduces the problem of oil fume leakage caused by installation gaps, improves the overall sealing performance of the smoke exhaust device, and ensures a good smoke exhaust effect.

[0008] As a preferred technical means: The cross-section of the convex column includes an arc-shaped edge at the lower part and a straight edge at the upper part. The positioning groove is an arc-shaped groove, and the two ends of the positioning groove are in arc transition. The arc-shaped edge at the lower part of the convex column matches the arc-shaped design of the positioning groove, so that during the rotation process, the two can be more accurately docked, reducing the shaking and deviation during installation, improving the accuracy and stability of installation, and ensuring the tight connection between the exhaust pipe and the exhaust seat. Users can more smoothly screw the exhaust pipe into the exhaust seat during the installation process. At the same time, the arc transition design at both ends of the positioning groove enables smooth transition at the moment of rotation in place, reducing the resistance and friction during installation and improving the installation efficiency. The straight edge at the upper part of the convex column can provide an avoidance space, increasing the distance between the convex column and the convex block, having sufficient deformation space, reducing the resistance during the installation process, and improving the convenience and efficiency of installation; in addition, due to the existence of the convex platform, it can also prevent excessive deformation of the convex column and damage. This design not only ensures the convenience of installation but also the accuracy of positioning, thereby improving the overall performance of the exhaust device.

[0009] As a preferred technical means: Through holes are provided at the connection ring above the connecting portion, and reinforcing ribs are provided on both side surfaces of the through holes. By providing through holes, the connection situation between the connecting mechanism and the fixing mechanism can be directly observed without disassembly or additional operations, greatly improving the convenience of observation and inspection. The arrangement of the reinforcing ribs provides additional support on both side surfaces of the through holes, enhancing the structural strength of the connection ring. This can not only prevent structural weakening or deformation caused by the opening of the through holes but also ensure that the connection ring has sufficient stability and durability when bearing external forces.

[0010] As a preferred technical means: The connecting mechanism further includes a first ring and a second ring that is concentric with the first ring and has a diameter smaller than that of the first ring. The first ring and the second ring form a downward annular groove that opens downward. The diameter of the first annular groove matches the diameter of the smoke exhaust seat opening, and a sealing ring that abuts against the top of the smoke exhaust seat opening is provided at the bottom of the first annular groove. Since the diameter of the first annular groove matches the diameter of the smoke exhaust seat opening, and a sealing ring that abuts against the top of the smoke exhaust seat opening is provided at the bottom of the first annular groove, it ensures a tight connection between the connecting mechanism and the smoke exhaust seat; the setting of the sealing ring effectively prevents the leakage of oil fumes and improves the sealing performance and stability of the connection. The downward annular groove formed by the concentric first ring and the second ring with a diameter smaller than that of the first ring enables the connecting mechanism to be easily aligned with the smoke exhaust seat opening and slide in during installation, simplifies the installation process, and improves the installation efficiency. At the same time, since the connection between the connecting mechanism and the smoke exhaust seat is achieved through simple sliding and abutting, the disassembly is also convenient, reducing the maintenance cost. The use of the sealing ring not only improves the sealing performance of the connection, but also the stable connection helps to reduce vibration and noise, improving the stability and reliability of the connection. Due to the tight connection and sealing between the connecting mechanism and the smoke exhaust seat, it can effectively prevent the oil fumes from leaking into the external environment and avoid polluting the environment.

[0011] As a preferred technical means: The smoke exhaust seat opening is provided with a third ring and a fourth ring that is concentric with the third ring and has a diameter smaller than that of the third ring. The third ring and the fourth ring form an upward annular groove that opens upward; the third ring is inserted into the downward annular groove; the second ring is inserted into the upward annular groove. The third ring is inserted into the downward annular groove and the second ring is inserted into the upward annular groove. This double nested design enables a firm connection to be formed between the connecting mechanism and the smoke exhaust seat opening, not only enhancing the stability of the connection, but also effectively preventing the connection from loosening or falling off, thus ensuring the normal operation of the smoke exhaust system. Due to this nested design, the contact area between the connecting mechanism and the smoke exhaust seat opening increases, making the seal more tight, helping to prevent gas or smoke from leaking from the connection, and improving the sealing performance of the entire smoke exhaust system. This design makes the installation of the connecting mechanism and the smoke exhaust seat opening more convenient. The operator only needs to insert the corresponding ring into the corresponding annular groove and then rotate to complete the installation. This simple installation method not only improves the work efficiency, but also reduces the installation difficulty. Due to the stable connection and good sealing performance, this design can effectively reduce problems that occur during the operation of the smoke exhaust system, such as leakage and loosening. This helps to improve the overall reliability of the system and extend its service life.

[0012] As a preferred technical measure: the bottom of the first ring is higher than the bottom of the second ring; the top of the third ring is higher than the top of the fourth ring; the bottom of the second ring is lower than the top of the fourth ring. After the second ring is inserted into the upward annular groove, the second ring and the third ring form a downward opening below the top of the fourth ring, which can prevent upward cooking fumes from entering the gap between the second ring and the third ring. While ensuring the connection reliability, it can further avoid the leakage of cooking fumes.

[0013] As a preferred technical measure: at least three fixing mechanisms are provided on the outer peripheral wall of the third ring; the third ring, the fourth ring, the fixing mechanisms, and the smoke exhaust seat are of an integral structure.

[0014] By arranging the fixing mechanisms on the outer peripheral wall of the third ring and forming an integral structure with the third ring, the fourth ring, and the smoke exhaust seat, the structural stability of the entire smoke exhaust seat opening is greatly enhanced, the connection points between components are reduced, and the potential loosening risk is decreased, making the entire smoke exhaust device more stable and reliable. Since the fixing mechanisms and the smoke exhaust seat are of an integral structure, there is no need to install the fixing mechanisms separately, which simplifies the installation steps and operation process, improves the installation efficiency, and also reduces the possible errors and inconveniences during the installation process. The design of the integral structure reduces the gaps between components and potential leakage paths, which helps to improve the sealing performance between the smoke exhaust seat opening and the connecting mechanism. This helps to prevent the leakage of cooking fumes, liquids, etc. from the connection, ensuring the normal operation of the smoke exhaust system. Due to the stable structure and good sealing performance, the failure rate and maintenance requirements of the smoke exhaust system are reduced, the number of repairs and the frequency of replacing components are decreased, thus reducing the maintenance cost.

[0015] As a preferred technical measure: the diameter of the connecting ring is larger than that of the smoke exhaust pipe, and an annular step surface is formed between the connecting ring and the smoke exhaust pipe. The connecting ring, the first ring, the second ring, and the smoke exhaust pipe are of an integral structure. By designing the connecting ring, the first ring, the second ring, and the smoke exhaust pipe as an integral structure, the connection points between components are reduced, thereby reducing the risk of failures caused by loose or broken connections. The design of the integral structure makes the installation process more convenient. Since there is no need to assemble and connect each component separately, the installer can quickly complete the installation of the entire smoke exhaust system, improving the installation efficiency. The connecting ring is connected to the main body of the smoke exhaust pipe through the annular step surface, and the connection is reliable.

[0016] Beneficial effects:

[0017] In this technical solution, the corrugated pipe is sleeved in the smoke exhaust pipe. When the corrugated pipe needs to be replaced, it is removed together with the smoke exhaust pipe, and then the new smoke exhaust pipe connected with the corrugated pipe is installed on the smoke exhaust seat together, which is convenient for installation.

[0018] The corrugated pipe can be pre - sleeved on the smoke exhaust pipe when leaving the factory, ensuring the sealing performance at the connection between the corrugated pipe and the smoke exhaust pipe. There is no need to worry about air leakage at the connection between the corrugated pipe and the smoke exhaust pipe, thus improving the smoke exhaust efficiency.

[0019] The smoke exhaust pipe has much better strength than the corrugated pipe. The smoke exhaust pipe is connected to the smoke exhaust seat, and the pressure and vibration at the connection are often greater. The smoke exhaust pipe has better strength than the corrugated pipe and can withstand greater pressure and vibration. Therefore, the whole device is more durable.

[0020] This technical solution makes the disassembly, installation, maintenance and replacement of components of the smoke exhaust device more convenient and fast, greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the assembly structure of the present utility model.

[0022] Figure 2 It is a schematic top - view structure diagram of the present utility model.

[0023] Figure 3 It is a schematic A - A cross - sectional structure diagram of the present utility model.

[0024] Figure 4 It is a schematic diagram of a viewing direction structure before assembly of the present utility model.

[0025] Figure 5 It is another schematic diagram of a viewing direction structure before assembly of the present utility model.

[0026] Figure 6 It is a schematic diagram of the structure where the smoke exhaust pipe of the present utility model is inserted downward into the smoke exhaust seat.

[0027] Figure 7 It is a schematic diagram of the structure after the smoke exhaust pipe of the present utility model is inserted downward into the smoke exhaust seat and rotated by a certain angle.

[0028] Figure 8 is Figure 3 an enlarged view of part B.

[0029] In the figure: 1. Smoke exhaust pipe; 101. Connection ring; 102. Connection part; 103. Positioning groove; 104. Guide part; 105. Through hole; 106. Reinforcing rib; 107. First ring; 108. Second ring; 109. Downward annular groove; 2. Smoke exhaust seat; 201. Protrusion; 202. Protruding column; 203. Limiting part; 204. Third ring; 205. Fourth ring; 206. Upward annular groove; 3. Connection mechanism; 4. Fixing mechanism; 5. Sealing ring. DETAILED DESCRIPTION OF THE INVENTION

[0030] The technical solution of the present utility model will be further described in detail below in conjunction with the accompanying drawings of the specification.

[0031] As Figures 1-8 shown, the present utility model includes a smoke exhaust pipe and a smoke exhaust base 2 for connecting a range hood and the smoke exhaust pipe. The smoke exhaust pipe includes a smoke exhaust tube 1 and a corrugated pipe connected thereto; the upper end of the smoke exhaust base 2 is a smoke exhaust base opening, and a fixing mechanism 4 is provided at the smoke exhaust base opening; a connecting mechanism 3 is provided at the lower end of the smoke exhaust tube 1; the connecting mechanism 3 of the smoke exhaust tube 1 is detachably connected to the fixing mechanism 4.

[0032] In this technical solution, the corrugated pipe is sleeved in the smoke exhaust tube 1. When the corrugated pipe needs to be replaced, it is removed together with the smoke exhaust tube 1, and then the new smoke exhaust tube 1 connected with the corrugated pipe is installed on the smoke exhaust base 2 together, which is convenient for installation; moreover, the corrugated pipe can be pre-sleeved on the smoke exhaust tube 1 at the factory, ensuring the sealing performance at the connection between the corrugated pipe and the smoke exhaust tube 1, and there is no need to worry about the air leakage problem at the connection between the corrugated pipe and the smoke exhaust tube 1, thereby improving the smoke exhaust efficiency. In addition, the strength of the smoke exhaust tube 1 is much better than that of the corrugated pipe. It is the smoke exhaust tube 1 that is connected to the smoke exhaust base 2, and the pressure and vibration at the connection are often greater. When the smoke exhaust tube 1 has better strength than the corrugated pipe, it can withstand greater pressure and vibration, so the whole device is more durable. This technical solution makes the smoke exhaust device more convenient and fast in disassembly, installation, maintenance and replacement of components, greatly improving the user experience. At the same time, this solution also pays attention to the sealing performance and durability of the device to meet different kitchen environments and user needs.

[0033] The detachable connection between the connecting mechanism 3 of the smoke exhaust tube 1 and the fixing mechanism 4 can adopt threaded connection, snap connection, etc. The threaded connection has a simple structure and high reliability, and the disassembly and replacement of the connecting parts are very convenient. In the smoke exhaust system, the threaded connection can be used to connect components that require a large fastening force, such as the connection between the smoke exhaust tube 1 and the connecting mechanism 3. By rotating the thread, a tight connection can be achieved, and it can also be easily disassembled when needed. The snap connection is to connect by sleeving the convex and concave structures on two or more parts with each other. The snap connection can be used for quick connection and disassembly of the smoke exhaust tube 1 and the connecting mechanism 3 without using additional tools, and the operation is simple.

[0034] In this embodiment, the fixing mechanism 4 includes an outwardly protruding bump 201, a boss 202 and a stopper 203, the boss 202 is located at the middle and lower position of the bump 201, and the stopper 203 is located below one end of the bump 201; the connecting mechanism 3 includes a connecting ring 101 with a diameter greater than the diameter formed by the plurality of bumps 201, and the connecting ring 101 is provided with a plurality of inwardly protruding connecting portions 102 matching the bumps 201, and the middle position of the top surface of the connecting portion 102 is concave to form The positioning groove 103 matches the protrusion 202, and one end of the connection part 102 is tilted downward to form a guide part 104; when installing the exhaust pipe 1, rotate the exhaust pipe 1, and the guide part 104 of the connection part 102 slides over the protrusion 201. Under the action of the guide part 104, the exhaust pipe 1 gradually moves downward while rotating. After the bottom surface of the protrusion 201 of the exhaust seat 2 fits with the top surface of the connection part 102, continue to rotate the exhaust pipe 1 until the protrusion 202 is embedded in the positioning groove 103, and the installation of the exhaust pipe 1 is completed. Before rotating the exhaust pipe 1, the fixing mechanism 4 and the connecting mechanism 3 are staggered, such as Figure 4 , 5 As shown, the smoke exhaust pipe 1 needs to go down so that the smoke exhaust seat mouth is inserted into the connecting ring 101, as shown in FIG. Figure 6 As shown, the connecting mechanism 3 on the smoke exhaust pipe is screwed into the fixing mechanism 4 of the smoke exhaust seat 2, as shown in FIG. Figure 7 As shown, the connecting portion 102 is located below the protrusion 201 until the positioning groove 103 is locked with the protrusion 202 to achieve assembly, as shown in FIG. Figure 1 , 2 , 3, and 8. The exhaust pipe 1 moves downward and the connecting ring 101 covers the exhaust seat and the fixing mechanism 4, making the installation process intuitive and simple. The user only needs to align the exhaust seat with the connecting ring 101, and then let the exhaust pipe 1 move downward naturally to start the installation process. By rotating the exhaust pipe 1, the connecting mechanism 3 can be smoothly screwed into the fixing mechanism 4. During this process, the cooperation between the connecting part 102 and the protrusion 201 ensures the stability of the rotation, and the locking of the positioning groove 103 and the boss 202 achieves precise positioning, which not only improves the accuracy of the installation, but also enables each installation to achieve the expected sealing effect. The limiter 203 can effectively prevent excessive force, the boss 202 from disengaging from the positioning groove 103 and continuing to rotate, missing the matching position, and needing to be operated again, thereby improving the installation efficiency and ensuring that a stable fixed state can be achieved after each installation, making the installation process safer and more reliable. Since the installation process is simple and easy to operate, the user can quickly complete the installation of the exhaust pipe 1 without complex tools or professional skills, which not only saves the user's time and energy, but also improves the installation efficiency.

[0035] For convenient assembly and disassembly, the convex post 202 is separately arranged from the convex block 201. An upward groove is provided on the bottom surface of the middle part of the convex block 201, and the convex post 202 is provided below the groove. Due to the separate arrangement, the convex post 202 with a smaller diameter has a certain elastic deformation ability, and the user does not need to apply too much force during installation to make the exhaust pipe 1 and the exhaust seat 2 fit tightly. This not only reduces the installation and disassembly burden of the user, makes the installation easy and does not require too much force, but also avoids problems such as part damage or loose installation caused by excessive force, effectively reduces the problem of oil fume leakage caused by installation gaps, improves the overall sealing performance of the exhaust device, and ensures a good exhaust effect.

[0036] To reduce the disassembly and assembly resistance, the cross-section of the convex post 202 includes an arc-shaped edge at the lower part and a straight edge at the upper part. The positioning groove 103 is an arc-shaped groove, and the two ends of the positioning groove 103 are arc-transitioned. The arc-shaped edge at the lower part of the convex post 202 matches the arc-shaped design of the positioning groove 103, so that during the rotation process, the two can be more accurately docked, reducing the shaking and deviation during installation, improving the accuracy and stability of installation, and ensuring a tight connection between the exhaust pipe 1 and the exhaust seat 2. The user can more smoothly screw the exhaust pipe 1 into the exhaust seat 2 during the installation process. At the same time, the arc-transition design at both ends of the positioning groove 103 enables a smooth transition at the moment of rotation in place, reducing the resistance and friction during installation and improving the installation efficiency. The straight edge at the upper part of the convex post 202 can provide an avoidance space, increasing the distance between the convex post 202 and the convex block 201, having sufficient deformation space, reducing the resistance during the installation process, and improving the convenience and efficiency of installation; in addition, due to the existence of the convex platform, it can also avoid the situation where the convex post 202 is deformed too much and damaged. This design not only ensures the convenience of installation but also ensures the accuracy of positioning, thus improving the overall performance of the exhaust device.

[0037] For convenient viewing, a through hole 105 is opened at the connection ring 101 above the connecting portion 102, and reinforcing ribs 106 are provided on both side surfaces of the through hole 105. By providing the through hole 105, the connection situation between the connecting mechanism 3 and the fixing mechanism 4 can be directly seen without disassembly or additional operations, greatly improving the convenience of observation and inspection. The setting of the reinforcing ribs 106 provides additional support on both side surfaces of the through hole 105, enhancing the structural strength of the connection ring 101. This can not only prevent the structural weakening or deformation caused by opening the through hole 105 but also ensure that the connection ring 101 has sufficient stability and durability when bearing external forces.

[0038] To improve the reliability of the connection and prevent the leakage of oil fumes, the connection mechanism 3 further includes a first ring 107 and a second ring 108 that is concentric with the first ring 107 and has a diameter smaller than that of the first ring 107. The first ring 107 and the second ring 108 form a downward-opening downward annular groove 109. The diameter of the groove of the first ring 107 matches the diameter of the smoke exhaust seat opening. A sealing ring 5 that abuts against the top of the smoke exhaust seat opening is provided at the bottom of the groove of the first ring 107. Since the diameter of the groove of the first ring 107 matches the diameter of the smoke exhaust seat opening, and a sealing ring 5 that abuts against the top of the smoke exhaust seat opening is provided at the bottom of the groove of the first ring 107, a tight connection between the connection mechanism 3 and the smoke exhaust seat 2 is ensured; the setting of the sealing ring 5 effectively prevents the leakage of oil fumes and improves the sealing performance and stability of the connection. The downward-opening downward annular groove 109 formed by the concentric first ring 107 and second ring 108 enables the connection mechanism 3 to be easily aligned with the smoke exhaust seat opening and slide in during installation, simplifies the installation process, and improves the installation efficiency. At the same time, since the connection between the connection mechanism 3 and the smoke exhaust seat 2 is achieved through simple sliding and abutting, the disassembly is also convenient, reducing the maintenance cost. The use of the sealing ring 5 not only improves the sealing performance of the connection, but also the stable connection helps to reduce vibration and noise, improving the stability and reliability of the connection. Due to the tight connection and sealing between the connection mechanism 3 and the smoke exhaust seat 2, the leakage of oil fumes into the external environment can be effectively prevented, avoiding environmental pollution.

[0039] To further facilitate disassembly and assembly: A third ring 204 and a fourth ring 205 that is concentric with the third ring 204 and has a diameter smaller than that of the third ring 204 are provided at the smoke exhaust seat opening. The third ring 204 and the fourth ring 205 form an upward-opening upward annular groove 206; the third ring 204 is inserted into the downward annular groove 109; the second ring 108 is inserted into the upward annular groove 206. The downward annular groove 109 serves as a guiding groove for the third ring 204, enabling the exhaust pipe 1 to rotate according to the guided position, improving the efficiency of disassembly and assembly. The third ring 204 is inserted into the downward annular groove 109, and the second ring 108 is inserted into the upward annular groove 206. This double nested design forms a firm connection between the connection mechanism 3 and the smoke exhaust seat opening, not only enhancing the stability of the connection, but also effectively preventing the connection from loosening or falling off, thus ensuring the normal operation of smoke exhaust. Due to this nested design, the contact area between the connection mechanism 3 and the smoke exhaust seat opening increases, making the seal tighter, helping to prevent gas or smoke from leaking from the connection, improving the sealing performance of the entire smoke exhaust system, and making the installation of the connection mechanism 3 and the smoke exhaust seat opening more convenient. The operator only needs to insert the corresponding ring into the corresponding annular groove and then rotate to complete the installation. This simple installation method not only improves the work efficiency, but also reduces the installation difficulty. Due to the stable connection and good sealing performance, this design can effectively reduce problems that occur during the operation of the smoke exhaust system, such as leakage and loosening. This helps to improve the overall reliability of the system and extend the service life.

[0040] To further prevent oil fume from leaking out, the bottom of the first ring 107 is higher than the bottom of the second ring 108; the top of the third ring 204 is higher than the top of the fourth ring 205; the bottom of the second ring 108 is lower than the top of the fourth ring 205. After the second ring 108 is inserted into the upward annular groove 206, the second ring 108 and the third ring 204 form a downward opening below the top of the fourth ring 205, which can prevent upward oil fume from entering the gap between the second ring 108 and the third ring 204. While ensuring the connection reliability, it can further prevent oil fume from leaking out.

[0041] To improve the strength, at least three fixing mechanisms 4 are provided on the outer peripheral wall of the third ring 204; the third ring 204, the fourth ring 205, the fixing mechanism 4, and the smoke exhaust seat 2 are of an integral structure.

[0042] By arranging the fixing mechanism 4 on the outer peripheral wall of the third ring 204 and forming an integral structure with the third ring 204, the fourth ring 205, and the smoke exhaust seat 2, the structural stability of the entire smoke exhaust seat opening is greatly enhanced, the connection points between components are reduced, and the potential loosening risk is decreased, making the entire smoke exhaust device more stable and reliable. Since the fixing mechanism 4 and the smoke exhaust seat 2 are of an integral structure, there is no need to install the fixing mechanism 4 separately, which simplifies the installation steps and operation process, improves the installation efficiency, and also reduces the possible errors and inconveniences during the installation process. The design of the integral structure reduces the gaps between components and potential leakage paths, which helps to improve the sealing performance between the smoke exhaust seat opening and the connecting mechanism 3. This helps to prevent the leakage of oil fume, liquid, etc. from the connection point and ensures the normal operation of the smoke exhaust system. Due to the stable structure and good sealing performance, the failure rate and maintenance requirements of the smoke exhaust system are reduced, the number of repairs and the frequency of replacing components are decreased, thus reducing the maintenance cost.

[0043] To facilitate assembly and improve the strength of the smoke exhaust pipe 1, the diameter of the connecting ring 101 is larger than that of the smoke exhaust pipe 1, and an annular step surface is formed between the connecting ring and the smoke exhaust pipe 1. The connecting ring 101, the first ring 107, the second ring 108, and the smoke exhaust pipe 1 are of an integral structure. By designing the connecting ring 101, the first ring 107, the second ring 108, and the smoke exhaust pipe 1 as an integral structure, the connection points between components are reduced, thereby reducing the failure risk caused by loose or broken connections. The design of the integral structure makes the installation process simpler. Since there is no need to assemble and connect each component separately, the installer can quickly complete the installation of the entire smoke exhaust system, improving the installation efficiency. The connecting ring 101 is connected to the main body of the smoke exhaust pipe 1 through the annular step surface, and the connection is reliable.

[0044] An easily detachable kitchen smoke exhaust device shown above is a specific embodiment of the present utility model, which has already reflected the substantial features and progress of the present utility model. According to actual usage needs, under the inspiration of the present utility model, equivalent modifications can be made to its shape, structure, etc., and all are within the protection scope of this solution.

Claims

1. An easily detachable kitchen smoke exhaust device, comprising a smoke exhaust duct and a smoke exhaust base (2) for connecting an oil fume extractor and the smoke exhaust duct, characterized in that: The described smoke exhaust duct includes a smoke exhaust pipe (1) and a corrugated pipe connected thereto; the upper end of the smoke exhaust seat (2) is a smoke exhaust seat opening, and a fixing mechanism (4) is provided at the smoke exhaust seat opening. A connecting mechanism (3) is provided at the lower end of the smoke exhaust pipe (1); the connecting mechanism (3) of the smoke exhaust pipe (1) is detachably connected to the fixing mechanism (4).

2. The kitchen fume exhaust device according to claim 1, wherein: The fixing mechanism (4) includes a convex block (201), a convex column (202) and a limiting member (203) that protrude outward. The convex column (202) is located below the middle of the convex block (201), and the limiting member (203) is located below one end of the convex block (201); the connecting mechanism (3) includes a connecting ring (101) with a diameter larger than the diameter formed by a plurality of convex blocks (201). A plurality of inwardly protruding connecting portions (102) that match the convex blocks (201) are provided on the connecting ring (101). A positioning groove (103) that matches the convex column (202) is formed by the middle position of the top surface of the connecting portion (102) being concave; one end of the connecting portion (102) slopes downward to form a guiding portion (104); when the smoke exhaust pipe (1) is installed, the smoke exhaust pipe (1) rotates, and the guiding portion (104) of the connecting portion (102) slides over the convex block (201). Under the action of the guiding portion (104), the smoke exhaust pipe (1) gradually rotates downward. The bottom surface of the convex block (201) of the smoke exhaust seat (2) fits against the top surface of the connecting portion (102). The smoke exhaust pipe (1) continues to rotate until the convex column (202) is embedded in the positioning groove (103), and the installation of the smoke exhaust pipe (1) is completed.

3. The kitchen smoke exhaust device according to claim 2, characterized in that: The convex column (202) is separately provided from the convex block (201). An upward groove is provided at the middle bottom surface of the convex block (201), and the convex column (202) is provided below the groove.

4. The kitchen smoke exhaust device that is easy to disassemble according to claim 3, wherein: The cross-section of the convex column (202) includes an arc-shaped edge at the lower part and a straight edge at the upper part. The positioning groove (103) is an arc-shaped groove, and the two ends of the positioning groove (103) are in arc transition.

5. The kitchen smoke exhaust device that is easy to disassemble according to claim 2, characterized in that: Through holes (105) are provided at the connecting ring (101) above the connecting portion (102), and reinforcing ribs (106) are provided on both side surfaces of the through holes (105).

6. The easy-to-dismantle kitchen smoke exhaust device according to claim 2, wherein: The connecting mechanism (3) further includes a first ring (107) and a second ring (108) that is concentric with the first ring (107) and has a diameter smaller than that of the first ring (107). The first ring (107) and the second ring (108) form a downward annular groove (109) with a downward opening. The diameter of the groove of the first ring (107) matches the diameter of the smoke exhaust seat opening, and a sealing ring (5) that abuts against the top of the smoke exhaust seat opening is provided at the bottom of the groove of the first ring (107).

7. The easy-to-dismantle kitchen smoke exhaust device according to claim 6, characterized in that: A third ring (204) and a fourth ring (205) that is concentric with the third ring (204) and has a diameter smaller than that of the third ring (204) are provided at the smoke exhaust seat opening. The third ring (204) and the fourth ring (205) form an upward annular groove (206) with an upward opening; the third ring (204) is inserted into the downward annular groove (109); the second ring (108) is inserted into the upward annular groove (206).

8. The kitchen smoke exhaust device easy to disassemble according to claim 7, characterized in that: The bottom of the first ring (107) is higher than the bottom of the second ring (108); the top of the third ring (204) is higher than the top of the fourth ring (205); the bottom of the second ring (108) is lower than the top of the fourth ring (205).

9. The kitchen fume exhaust device according to claim 7, characterized in that: At least three fixing mechanisms (4) are provided on the outer peripheral wall of the third ring (204); the third ring (204), the fourth ring (205), the fixing mechanism (4), and the smoke exhaust seat (2) are of an integral structure.

10. A kitchen smoke exhaust device that is easy to disassemble according to claim 6, characterized in that: The diameter of the connecting ring (101) is larger than that of the smoke exhaust pipe (1), and an annular step surface is formed between the connecting ring and the smoke exhaust pipe (1). The connecting ring (101), the first ring (107), the second ring (108), and the smoke exhaust pipe (1) are of an integral structure.

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