Indoor ventilation structure
By introducing an installation frame and hose into the ventilation duct, the problem of disassembling the duct for filter replacement is solved, enabling convenient filter replacement and improving work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HANJIE CONSTRUCTION CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-16
AI Technical Summary
In existing ventilation systems, replacing the filter requires dismantling the ventilation duct, making the replacement process cumbersome.
A ventilation duct structure with an installation frame and hose was designed. The filter element can be easily replaced by the combination of openings, baffles and through holes, reducing the number of operation steps.
It eliminates the need to disassemble the pipeline when replacing the filter element, improving replacement efficiency and simplifying the operation process.
Smart Images

Figure CN224365008U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation equipment technology, and more specifically, to an indoor ventilation structure. Background Technology
[0002] With the continuous improvement of technology and living standards, people are beginning to pursue indoor comfort. One of the factors affecting comfort is indoor ventilation. Therefore, people usually install ventilation structures indoors to ensure indoor air quality.
[0003] Current ventilation structures are mainly composed of interconnected ventilation ducts. When installing ventilation ducts, exhaust fans are usually installed inside the ducts to accelerate the air circulation within the ducts and improve ventilation. At the same time, filter elements are also installed inside the ventilation ducts to filter the air entering the room and improve air quality.
[0004] However, after filtering for a long time, a lot of dust will accumulate inside the filter element, so it needs to be replaced regularly. When replacing the filter element, since it is installed inside the ventilation duct, the ventilation duct needs to be removed before the filter element can be replaced, making the replacement process rather cumbersome.
[0005] Therefore, a new solution is needed to address this problem. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an indoor ventilation structure that solves the problem that when replacing the filter element, since the filter element is installed inside the ventilation duct, the ventilation duct must be removed before the filter element can be replaced, which is a cumbersome process.
[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pipe body with an internal exhaust fan and filter element, and two mounting frames for easy replacement of the filter element. The filter element and the inner wall of the mounting frame are detachably connected. The side wall of the pipe body has two openings for the mounting frame to enter its interior. The outer wall of the pipe body is rotatably connected to a baffle for controlling the opening and closing of the opening at the opening. The inner wall of the pipe body has several through holes on the side away from the opening. A flexible hose is slidably connected in the through holes to push the mounting frame to move.
[0008] The present invention is further configured such that: two sliding grooves are provided on the inner wall of the pipe body, a movable plate is slidably connected in the sliding grooves, and the two ends of the hose are respectively fixedly connected to the side wall of the movable plate.
[0009] The present invention is further configured such that: rollers are rotatably connected to both sides of the movable plate, and the rollers and the sliding grooves are in contact with each other.
[0010] The present invention is further configured such that: the inner wall of the mounting frame is provided with a groove and a placement slot for placing the filter element, and the mounting frame is rotatably connected to a limiting plate at the groove; when the limiting plate and the filter element come into contact with each other, the limiting plate and the side wall of the groove are engaged with each other.
[0011] The present invention is further configured such that a lever is fixedly connected to the side wall of the limiting plate.
[0012] The present invention is further configured such that: a lock body is provided on the side wall of the baffle, a connecting plate is fixedly connected to the outer wall of the pipe body, and a buckle box for the lock body to enter is provided on the side wall of the connecting plate.
[0013] The present invention is further configured such that the through hole is U-shaped.
[0014] In summary, this utility model has the following beneficial effects:
[0015] When replacing the filter element in the ventilation duct, the installation frame and opening design allow for filter element replacement by simply disassembling the duct body. Furthermore, the flexible hose and through-hole design enable automatic removal of the filter element from the duct body during replacement, reducing the number of steps required and improving work efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0017] Figure 2 A cross-sectional view of this utility model Figure 1 ;
[0018] Figure 3 A cross-sectional view of this utility model Figure 2 ;
[0019] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0020] Figure 5 A cross-sectional view of this utility model Figure 3 .
[0021] In the diagram: 1. Exhaust fan; 2. Filter element; 3. Pipe body; 4. Mounting frame; 5. Opening; 6. Baffle; 7. Through hole; 8. Slide groove; 9. Moving plate; 10. Roller; 11. Groove; 12. Placement slot; 13. Limiting plate; 14. Toggle block; 15. Lock body; 16. Connecting plate; 17. Buckle box; 18. Flexible hose. Detailed Implementation
[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.
[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] An indoor ventilation structure, such as Figures 1-5 As shown, the pipe body 3 includes an internal exhaust fan 1 and a filter element 2, and two mounting frames 4 for easy replacement of the filter element 2. The filter element 2 and the inner wall of the mounting frame 4 are detachably connected. The side wall of the pipe body 3 has two openings 5 for the mounting frame 4 to enter its interior. The outer wall of the pipe body 3 is rotatably connected to the openings 5, and a baffle 6 is used to control the opening and closing of the openings 5. Several through holes 7 are provided on the side of the inner wall of the pipe body 3 away from the openings 5. A flexible hose 18 is slidably connected in the through holes 7 to push the mounting frame 4 to move. The through holes 7 are U-shaped, which can better fit the flexible hose 18 and the side wall of the through hole 7, making it easier to drive the flexible hose 18 to move along the through hole 7. The flexible hose 18 is a rubber hose, which can make the flexible hose 18 flexible while improving its structural strength, making it easier to push the mounting frame 4 to move.
[0026] When installing the ventilation duct, the exhaust fan 1 is installed inside the duct body 3. Then, the duct body 3 and the indoor ceiling are installed together. Next, the filter element 2 and the mounting frame 4 are installed together, and the baffle 6 is rotated to open the opening 5. Then, the mounting frame 4 with the filter element 2 is inserted into one of the openings 5 and pushed to make contact with the hose 18. After the mounting frame 4 and the hose 18 make contact, the mounting frame 4 is pushed until it is completely inside the duct body 3. At this time, the hose 18 is restricted from moving along the through hole 7, and the other end of the hose 18 is driven to move into the duct body 3. Finally, the baffle 6 is used to close the two openings 5, thus completing the installation of the ventilation duct.
[0027] When the filter element 2 in the ventilation duct needs to be replaced, rotate the baffle 6 to open the two openings 5, then insert the mounting frame 4 with the filter element 2 into the other opening 5 and make contact with the other end of the hose 18. Then apply a pushing force to the mounting frame 4. At this time, the hose 18 located in the duct body 3 will move into the through hole 7 and drive its other end into the duct body 3. At the same time, it applies a pushing force to the mounting frame 4, which was originally in the duct body 3, pushing it out of the duct body 3. This completes the replacement of the filter element 2. With the setting of the mounting frame 4 and the opening 5, the filter element 2 can be replaced by disassembling the duct body 3. At the same time, with the setting of the hose 18 and the through hole 7, the filter element 2 located in the duct body 3 can be automatically removed when replacing the filter element 2, reducing the number of operation steps for the staff when replacing the filter element 2 and improving work efficiency.
[0028] Furthermore, the inner wall of the pipe body 3 is provided with two sliding grooves 8, and a movable plate 9 is slidably connected in the sliding grooves 8. The two ends of the hose 18 are respectively fixedly connected to the side wall of the movable plate 9. By using the movable plate 9 and the sliding grooves 8, the movement position of the hose 18 can be limited, preventing the hose 18 from shifting during movement. At the same time, it can also increase the contact area between the mounting frame 4 and the hose 18, making it easier to drive the mounting frame 4 to push the hose 18 to move. Rollers 10 are rotatably connected to both sides of the movable plate 9. The rollers 10 and the sliding grooves 8 are in contact with each other, making it easier to drive the movable plate 9 to move along the sliding grooves 8.
[0029] like Figures 1-3As shown, the inner wall of the mounting frame 4 has a groove 11 and a placement slot 12 for placing the filter element 2. The mounting frame 4 is rotatably connected to a limiting plate 13 at the groove 11. When the limiting plate 13 and the filter element 2 are in contact, the limiting plate 13 and the side wall of the groove 11 are engaged with each other. When the filter element 2 and the mounting frame 4 are installed together, the limiting plate 13 is rotated to separate the limiting plate 13 and the groove 11 and remove the engagement. Then, the two sides of the filter element 2 are inserted into the groove 11 and the placement slot 12 respectively. Then, the limiting plate 13 is rotated back to its original position and engaged with the groove 11. At this time, the filter element 2 is restricted and cannot be separated from the groove 11 and the placement slot 12, thus achieving the effect of installing the limiting plate 13. A lever 14 is fixedly connected to the side wall of the limiting plate 13, which can facilitate the rotation of the limiting plate 13.
[0030] like Figure 1 As shown, the side wall of the baffle 6 is provided with a lock body 15, and the outer wall of the pipe body 3 is fixedly connected with a connecting plate 16. The side wall of the connecting plate 16 is provided with a buckle box 17 for the lock body 15 to enter, which can better control whether the baffle 6 rotates, and at the same time prevent unauthorized personnel from opening the baffle 6.
[0031] The usage process of this utility model is as follows:
[0032] When installing the ventilation duct, the exhaust fan 1 is installed inside the duct body 3. Then, the duct body 3 and the indoor ceiling are installed together. Next, the filter element 2 and the mounting frame 4 are installed together, and the baffle 6 is rotated to open the opening 5. Then, the mounting frame 4 with the filter element 2 is inserted into one of the openings 5 and pushed to make contact with the hose 18. After the mounting frame 4 and the hose 18 make contact, the mounting frame 4 is pushed until it is completely inside the duct body 3. At this time, the hose 18 is restricted from moving along the through hole 7, and the other end of the hose 18 is driven to move into the duct body 3. Finally, the baffle 6 is used to close the two openings 5, thus completing the installation of the ventilation duct.
[0033] When the filter element 2 in the ventilation duct needs to be replaced, rotate the baffle 6 to open the two openings 5, then insert the mounting frame 4 with the filter element 2 into the other opening 5 and make contact with the other end of the hose 18. Then apply a pushing force to the mounting frame 4. At this time, the hose 18 located in the duct body 3 will move into the through hole 7 and drive its other end into the duct body 3. At the same time, it applies a pushing force to the mounting frame 4, which was originally in the duct body 3, pushing it out of the duct body 3. This completes the replacement of the filter element 2. With the setting of the mounting frame 4 and the opening 5, the filter element 2 can be replaced by disassembling the duct body 3. At the same time, with the setting of the hose 18 and the through hole 7, the filter element 2 located in the duct body 3 can be automatically removed when replacing the filter element 2, reducing the number of operation steps for the staff when replacing the filter element 2 and improving work efficiency.
[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. An indoor ventilation structure, comprising a duct body (3) with an internal exhaust fan (1) and a filter element (2), characterized in that: It also includes two mounting frames (4) for easy replacement of filter element (2). The filter element (2) and the inner wall of the mounting frame (4) are detachably connected. The side wall of the pipe body (3) is provided with two openings (5) for the mounting frame (4) to enter its interior. The outer wall of the pipe body (3) is rotatably connected to the opening (5) with a baffle (6) for controlling the opening and closing of the opening (5). The inner wall of the pipe body (3) is provided with several through holes (7) on the side away from the opening (5). A flexible hose (18) is slidably connected in the through hole (7) to push the mounting frame (4) to move.
2. The indoor ventilation structure according to claim 1, characterized in that: The inner wall of the pipe body (3) is provided with two sliding grooves (8), and a movable plate (9) is slidably connected in the sliding grooves (8). The two ends of the hose (18) are respectively fixedly connected to the side wall of the movable plate (9).
3. The indoor ventilation structure according to claim 2, characterized in that: Both sides of the movable plate (9) are rotatably connected to rollers (10), and the rollers (10) and the slide groove (8) are in contact with each other.
4. The indoor ventilation structure according to claim 1, characterized in that: The inner wall of the mounting frame (4) is provided with a groove (11) and a placement slot (12) for placing the filter element (2). The mounting frame (4) is rotatably connected to a limiting plate (13) at the groove (11). When the limiting plate (13) and the filter element (2) come into contact with each other, the limiting plate (13) and the side wall of the groove (11) are engaged with each other.
5. An indoor ventilation structure according to claim 4, characterized in that: A lever (14) is fixedly connected to the side wall of the limiting plate (13).
6. An indoor ventilation structure according to claim 1, characterized in that: The side wall of the baffle (6) is provided with a lock body (15), and the outer wall of the pipe body (3) is fixedly connected with a connecting plate (16). The side wall of the connecting plate (16) is provided with a buckle box (17) for the lock body (15) to enter.
7. An indoor ventilation structure according to claim 1, characterized in that: The through hole (7) is U-shaped.