Kitchen smoke exhaust mechanism with good smoke exhaust capacity
By improving the structure of the smoke exhaust screen, and combining the design of the combined groove, limiting block and threaded sleeve, the smoke exhaust screen can be easily disassembled and cleaned, solving the problem of incomplete cleaning by traditional methods and improving smoke exhaust efficiency.
Patent Information
- Application Number
- CN202521969880.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-13
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-09-13
AI Technical Summary
Traditional methods of cleaning exhaust screens are difficult to thoroughly clean, resulting in poor oil fume separation.
A smoke exhaust mesh structure was designed. By combining a combination of grooves, limiting blocks, moving rods and threaded sleeves, the smoke exhaust mesh can be easily disassembled and cleaned. Combined with a smoke sensor, the airflow is controlled to adapt to the amount of oil fumes.
It enables convenient disassembly and thorough cleaning of the smoke exhaust mesh, improves the oil fume separation effect, and enhances smoke exhaust efficiency.
Smart Images

Figure CN224944841U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of range hood technology, specifically to a kitchen exhaust mechanism with good smoke extraction capacity. Background Technology
[0002] The range hood is installed above the stove. When the power is turned on, the motor drives the impeller to rotate at high speed, creating a negative pressure zone in a certain space above the stove. This draws the indoor cooking fumes into the range hood. The fumes pass through an oil filter for the first stage of oil-fume separation, and then enter the range hood's duct. The impeller's rotation then performs a second stage of oil-fume separation. The fumes in the fan cabinet are subjected to centrifugal force, causing the oil mist to condense into oil droplets, which are collected in an oil cup through an oil path. The purified fumes are finally discharged along a fixed path. Traditional exhaust screen devices are mainly installed inside the range hood using hinges or other structures. During cleaning, the exhaust screen is flipped over using the hinges, and then its interior is cleaned. However, this cleaning method is difficult to thoroughly clean the inside of the exhaust screen. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this utility model provides a kitchen exhaust system with good smoke extraction capacity, solving the problems mentioned in the background section.
[0005] (II) Technical Solution
[0006] This utility model provides the following technical solution: a kitchen exhaust mechanism with good smoke extraction capacity, comprising a body, an exhaust mesh plate installed inside the body, an assembly structure fixedly provided at the top and bottom of the exhaust mesh plate, a combination groove provided on the inner top wall and inner bottom wall of the body, the assembly structure being inserted into the combination groove, a fixed frame fixedly provided on one side of the body, a movable block movably provided inside the fixed frame, a docking block structure fixedly provided on one side of the movable block, a docking groove structure provided inside the assembly structure, the docking block structure being inserted into the docking groove structure, and a compression spring fixedly provided inside the fixed frame.
[0007] Furthermore, a smoke sensor structure is fixedly installed inside the smoke exhaust mesh plate. This smoke sensor structure is similar to the structure and function of existing products, and can sense the oil fumes. Through the function of the smoke sensor structure, the generated oil fumes can be sensed, and then the machine body can control the wind force to change according to the amount of oil fumes.
[0008] Furthermore, a limiting groove is provided on the inner side wall of the combined groove, and limiting blocks are fixed on both sides of the assembly structure. The limiting blocks are inserted into the inside of the limiting groove. When the smoke exhaust mesh plate is installed inside the machine body, its side is installed inside the combined groove through the assembly structure. Through the action of the limiting blocks and limiting grooves, the assembly structure and the combined groove can be limited.
[0009] Furthermore, a threaded sleeve is movably provided on one side of the fixing frame, and a movable rod is movably provided inside the fixing frame. The movable rod is movably connected to the inside of the threaded sleeve. One end of the movable rod is a smooth surface, and the other end of the movable rod is threaded. The smooth end of the movable rod can extend and retract inside the threaded sleeve. The threaded end of the movable rod matches the inside of the threaded sleeve. When the mating block structure retracts into the inside of the fixing frame, the threaded end of the movable rod moves into the inside of the threaded sleeve. Then, by rotating the threaded sleeve, the movable rod is locked and fixed inside the threaded sleeve through the action of the thread.
[0010] Furthermore, irregularly shaped blocks are fixedly provided on both sides of the movable block. The irregularly shaped blocks are located on both sides of the movable block and on the side of the fixed frame. The irregularly shaped blocks facilitate the movement of the movable block up and down inside the fixed frame.
[0011] Furthermore, guide grooves are provided on the inner walls of both sides of the fixing frame, and the movable block is movably connected to the inside of the guide groove, allowing the movable block to slide up and down inside the guide groove.
[0012] Compared with the prior art, this utility model provides a kitchen smoke exhaust mechanism with good smoke extraction capacity, which has the following beneficial effects:
[0013] 1. This kitchen exhaust system with good smoke extraction capacity can pull outwards when there is a lot of oil smoke accumulated inside the exhaust screen. This causes the movable block to separate from the docking slot structure. After separation, the exhaust screen is pulled outwards again. The side of the exhaust screen slides outwards inside the combination slot through the assembly structure, allowing the exhaust screen to separate from the inside of the machine body. This makes it easy to remove the exhaust screen from the inside of the device and then clean the inside of the exhaust screen.
[0014] 2. This kitchen exhaust mechanism with good smoke extraction capacity is equipped with a movable rod. One end of the movable rod is threaded, and the end of the movable rod near the movable block is also threaded. Then, a threaded sleeve is provided. When the docking block structure separates from the docking groove structure, the threaded end of the movable rod moves into the inside of the threaded sleeve. Then, the movable rod is locked and fixed by the action of the thread, thereby fixing the position of the movable block and the docking block structure, so that the docking block structure retracts into the inside of the fixed frame. Attached Figure Description
[0015] Figure 1This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This utility model Figure 1 Enlarged view of the structure at point A in the middle;
[0017] Figure 3 This is a schematic diagram of the movable rod structure of this utility model.
[0018] The components include: 1. Body; 2. Smoke exhaust mesh plate; 3. Smoke sensor structure; 4. Assembly structure; 5. Combination groove; 6. Limiting block; 7. Fixing frame; 8. Movable block; 9. Connecting block structure; 10. Connecting groove structure; 11. Moving rod; 12. Threaded sleeve; 13. Compression spring; 14. Irregular block; 15. Guide groove. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-3 A kitchen exhaust system with good smoke extraction capacity includes a body 1. An exhaust mesh plate 2 is installed inside the body 1. A smoke sensor structure 3 is fixedly installed inside the exhaust mesh plate 2. The smoke sensor structure 3 is similar in structure and function to existing products and can sense oil fumes. Through the function of the smoke sensor structure 3, the generated oil fumes can be sensed, and then the body 1 can control the wind force to change according to the amount of oil fumes.
[0021] In the first embodiment of this utility model, the top and bottom of the smoke exhaust mesh plate 2 are both fixedly provided with assembly structures 4. The inner top and bottom walls of the body 1 are both provided with combination grooves 5. The assembly structure 4 is inserted into the interior of the combination groove 5. A limiting groove is provided on the inner side wall of the combination groove 5. Limiting blocks 6 are fixedly provided on both sides of the assembly structure 4, and the limiting blocks 6 are inserted into the interior of the limiting grooves. When the smoke exhaust mesh plate 2 is installed inside the body 1, its side is installed inside the combination groove 5 through the assembly structure 4. The limiting blocks 6 and the limiting grooves can limit the assembly structure 4 and the combination groove 5. A fixing frame 7 is fixedly provided on one side of the body 1. The side is provided with a threaded sleeve 12, and the inside of the fixed frame 7 is provided with a movable rod 11. The movable rod 11 is movably connected to the inside of the threaded sleeve 12. One end of the movable rod 11 is a smooth surface, and the other end of the movable rod 11 is provided with a thread. The smooth end of the movable rod 11 can extend and retract inside the threaded sleeve 12. The threaded end of the movable rod 11 matches the inside of the threaded sleeve 12. When the mating block structure 9 retracts into the inside of the fixed frame 7, the threaded end of the movable rod 11 moves into the inside of the threaded sleeve 12. Then, by rotating the threaded sleeve 12, the movable rod 11 is locked and fixed inside the threaded sleeve 12 by the action of the thread.
[0022] In the second embodiment of this utility model, a movable block 8 is movably provided inside the fixed frame 7. A docking block structure 9 is fixedly provided on one side of the movable block 8. A docking groove structure 10 is opened inside the assembly structure 4. The docking block structure 9 is inserted into the docking groove structure 10. A compression spring 13 is fixedly provided inside the fixed frame 7. The compression spring 13 can compress the movable block 8, so that the docking block structure 9 can be locked and fixed inside the docking groove structure 10. A special-shaped block 14 is fixedly provided on both sides of the movable block 8. The special-shaped block 14 is located on both sides of the movable block 8 and on the side of the fixed frame 7. The special-shaped block 14 facilitates the movement of the movable block 8 up and down inside the fixed frame 7. A guide groove 15 is opened on the inner wall of both sides of the fixed frame 7. The movable block 8 is movably connected to the guide groove 15. The movable block 8 can slide up and down inside the guide groove 15.
[0023] When a large amount of oil fumes accumulate inside the smoke exhaust screen 2, the movable block 8 is pulled outward by the irregular blocks 14 on both sides, causing the docking block structure 9 to separate from the docking groove structure 10. After separation, the smoke exhaust screen 2 is pulled outward again, so that the side of the smoke exhaust screen 2 slides outward through the assembly structure 4 inside the combination groove 5, allowing the smoke exhaust screen 2 to separate from the inside of the body 1. This makes it easy to remove the smoke exhaust screen 2 from the inside of the body 1, and after removal, it is easier to clean the oil fumes inside the smoke exhaust screen 2. Since the entire smoke exhaust screen 2 is completely removed, the cleaning can be more thorough.
[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A kitchen exhaust system with good smoke extraction capacity, comprising a body (1), wherein an exhaust mesh plate (2) is installed inside the body (1), characterized in that: The smoke exhaust mesh plate (2) is fixedly provided with a smoke sensor structure (3), the smoke exhaust mesh plate (2) is fixedly provided with an assembly structure (4), the body (1) is provided with a combination groove (5), the assembly structure (4) is inserted into the combination groove (5), the body (1) is provided with a fixed frame (7), the inner walls on both sides of the fixed frame (7) are provided with guide grooves (15), the fixed frame (7) is provided with a movable block (8), the movable block (8) is movably connected to the guide groove (15), one side of the movable block (8) is fixedly provided with a docking block structure (9), the assembly structure (4) is provided with a docking groove structure (10), the docking block structure (9) is inserted into the docking groove structure (10), and the fixed frame (7) is provided with a compression spring (13).
2. The kitchen exhaust system with good smoke extraction capacity according to claim 1, characterized in that: A threaded sleeve (12) is movably provided on one side of the fixing frame (7), and a moving rod (11) is movably provided inside the fixing frame (7).
3. The kitchen smoke extraction mechanism with good smoke extraction capacity according to claim 1, characterized in that: The inner wall of the combined groove (5) is provided with a limiting groove, and both sides of the assembly structure (4) are fixed with limiting blocks (6), which are inserted into the inside of the limiting groove.
4. A kitchen smoke extraction mechanism with good smoke extraction capacity according to claim 2, characterized in that: The movable rod (11) is internally movably connected to the threaded sleeve (12). One end of the movable rod (11) is a smooth surface, and the other end of the movable rod (11) is threaded.
5. A kitchen smoke extraction mechanism with good smoke extraction capacity according to claim 1, characterized in that: Both sides of the movable block (8) are fixed with irregular blocks (14).
