Airflow guiding and separating device for fresh air system exhaust purification

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By installing louvers and driving, sealing, and limiting mechanisms on the ventilation ducts of the fresh air system's exhaust purification equipment, the problem of inflexible adjustment of the louver structure is solved, achieving multi-directional and uniform air supply and distribution of fresh air, improving the ventilation effect, and simplifying the cleaning process of the louvers.

CN224593394UActive Publication Date: 2026-08-04DONGTAI JIALENG ENVIRONMENTAL TECH CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: DONGTAI JIALENG ENVIRONMENTAL TECH CO LTD
Filing Date: 2025-06-16
Publication Date: 2026-08-04

AI Technical Summary

Technical Problem

The existing ventilation ducts of fresh air systems and exhaust purification equipment have simple louver structures at one end, which are not easy to adjust flexibly. This causes the fresh air to blow directly in one direction, resulting in airflow turbulence and affecting the uniform distribution of indoor air and the ventilation effect.

Method used

An airflow guiding and separating device for exhaust purification in a fresh air system was designed. By setting multiple sets of louvers inside the support frame at one end of the ventilation duct, and using a driving mechanism, sealing mechanism and limiting mechanism, the louvers can be flexibly adjusted and multi-directionally supplied with air, preventing fresh air from blowing directly onto obstacles and ensuring uniform air distribution.

Benefits of technology

It enables the supply of fresh air from multiple directions, avoids airflow turbulence, improves the uniformity of indoor air distribution and ventilation effect, and facilitates the cleaning of louvers, reducing the difficulty of operation for staff.

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Abstract

This utility model discloses an airflow guiding and separating device for exhaust purification in a fresh air system, including a ventilation duct. One end of the ventilation duct has a support frame, and the inner side of the support frame has multiple sets of louvers. Both ends of the multiple sets of louvers are rotatably connected to the inner wall of the support frame. Each end of the multiple sets of louvers has a horizontal plate, which is rotatably connected to one end of the multiple sets of louvers. A hinge block is rotatably connected to one side of one set of louvers, and a hinge rod is rotatably connected to one side surface of the hinge block. One end of the hinge rod is rotatably connected to a disc, with one end of the hinge rod located at the outer edge of the disc. A driving mechanism is provided on one side surface of the disc. This invention solves the problem of the simple and inconvenient adjustment of the louver structure at one end of the ventilation duct, preventing the supplied fresh air from blowing directly in one direction. It allows fresh air to be blown into the room from multiple directions, preventing fresh air from hitting obstacles and causing airflow turbulence. This ensures that fresh air is evenly distributed indoors, improving the indoor ventilation effect.

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Description

Technical Field

[0001] This utility model relates to the field of gas flow direction control technology, specifically an airflow guiding and separating device for exhaust purification in a fresh air system. Background Technology

[0002] Fresh air systems and exhaust purification equipment are a series of devices and machines used to achieve functions such as air circulation, ventilation, exhaust, and air supply. Common ventilation equipment includes ventilators, exhaust fans, ventilation ducts, air handling units, fresh air systems, and exhaust fans. Their function is to regulate the exchange and flow of indoor and outdoor air to improve indoor air quality, control temperature and humidity, remove odors, harmful gases, dust, etc., and create a suitable indoor environment or meet specific process requirements.

[0003] When using existing fresh air systems and exhaust purification equipment ventilation ducts, louvers are usually installed at one end of the duct to guide and separate the airflow. However, the louver structure installed at one end of the existing ventilation ducts is relatively simple and inconvenient to adjust flexibly during use. Therefore, the fresh air delivered is usually blown directly in one direction, which can easily impact the wall or other obstacles, causing airflow turbulence and making it impossible to distribute evenly in the room, thus affecting the diffusion and ventilation effect of fresh air. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an airflow guiding and separating device for exhaust purification in a fresh air system. This device solves the problem that the louver structure at one end of the ventilation duct is simple and inconvenient to adjust flexibly. It also prevents the fresh air from blowing directly in one direction, thereby allowing fresh air to be blown into the room from multiple directions. This prevents the fresh air from hitting obstacles and causing airflow turbulence, and also ensures that the fresh air is evenly distributed in the room, improving the ventilation effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an airflow guiding and separating device for exhaust purification in a fresh air system, comprising a ventilation duct, a support frame at one end of the ventilation duct, and multiple sets of louvers on the inner side of the support frame, both ends of the multiple sets of louvers being rotatably connected to the inner wall of the support frame, and both ends of the multiple sets of louvers being provided with horizontal plates, the horizontal plates being rotatably connected to one end of the multiple sets of louvers, a hinge block being rotatably connected to one side of one set of louvers, and a hinge rod being rotatably connected to one side surface of the hinge block, a disc being rotatably connected to one end of the hinge rod, and one end of the hinge rod being located at the outer edge of the disc, a driving mechanism being provided on one side surface of the disc, a sealing component being provided on one side surface of the support frame, a support plate being fixedly connected to the inner surface of the support frame, a limiting mechanism being provided on one side surface of the support plate, and an assembly plate being fixedly connected to the other end of the ventilation duct.

[0006] Preferably, the driving mechanism includes a driving shaft, one end of which is fixedly connected to one side surface of the disk, the other end of which is fixedly connected to a fan blade, and a collar is rotatably connected to the side surface of the driving shaft. The side surface of the collar is fixedly connected to the inner wall of the ventilation duct via a support rod.

[0007] Preferably, the sealing mechanism includes a sleeve, which is fixedly connected to one side surface of the support frame. A rubber pad is provided on the inner side of the sleeve, and the rubber pad is fixedly connected to one side surface of the support frame. The rubber pad is aligned with one end of the ventilation duct.

[0008] Preferably, the limiting mechanism includes a limiting rod, one end of which is fixedly connected to one side surface of the support plate. A limiting plate is sleeved on the side surface of the limiting rod, one end of which is fixedly connected to the inner wall of the ventilation duct. A top plate is fixedly connected to the other end of the limiting rod, and a spring is fixedly connected to one side surface of the top plate. One end of the spring is fixedly connected to one side surface of the limiting plate.

[0009] Preferably, a support shaft is fixedly connected to the upper surface of the ventilation duct, and a rubber ring is fixedly connected to the surface of the support shaft. A rotating plate is rotatably connected to the side surface of the rubber ring, and one end of the rotating plate is located on one side surface of the support frame.

[0010] Preferably, a positioning groove is provided in the middle of one side surface of the support frame, and the inner wall of the positioning groove is lower than the lower surface of the rotating plate.

[0011] This invention provides an airflow guiding and separating device for exhaust air purification in a fresh air system. Compared with the prior art, it has the following advantages:

[0012] 1. By cooperating with the hinge block installed on one side of one set of louvers, the horizontal plate rotatably connected to both ends of the louvers, the hinge rod rotatably connected to one side of the hinge block, the disc rotatably connected to one end of the hinge rod, and the drive mechanism set on one side of the disc, the problem of simple and inconvenient flexible adjustment of the louver structure at one end of the ventilation duct is solved. It also avoids the fresh air being blown directly in one direction, thus enabling fresh air to be blown into the room from multiple directions, preventing fresh air from being blown into obstacles and causing airflow turbulence, and making the fresh air evenly distributed in the room, thus improving the indoor ventilation effect.

[0013] 2. The support plate fixedly connected to the inner surface of the support frame and the limiting rod fixedly connected to one side surface of the support plate cooperate with the limiting plate on the side surface of the limiting rod and the spring connected to one end of the top plate of the limiting rod. This allows the support frame to be easily separated from the ventilation duct, making it convenient for workers to thoroughly clean the louvers inside the support frame. This avoids the need to disassemble the support frame when cleaning the louvers, and reduces the trouble and workload for workers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A side-view top view of the structure;

[0016] Figure 3 This utility model Figure 1 Schematic diagram of the internal structure of the central ventilation duct;

[0017] Figure 4 This utility model Figure 3 A schematic diagram of the internal side view of the central support frame.

[0018] In the diagram: 1. Ventilation duct; 101. Assembly plate; 2. Rotating plate; 201. Support shaft; 202. Rubber ring; 3. Support frame; 301. Louver; 302. Sleeve; 303. Positioning groove; 304. Rubber pad; 305. Support plate; 306. Spring; 307. Limiting plate; 308. Limiting rod; 309. Top plate; 3010. Horizontal plate; 4. Fan blade; 401. Drive shaft; 402. Disc; 403. Hinge block; 404. Hinge rod; 5. Collar; 501. Support rod. 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 1-4This utility model provides a technical solution: an airflow guiding and separating device for exhaust purification in a fresh air system, including a ventilation duct 1, a support frame 3 at one end of the ventilation duct 1, multiple sets of louvers 301 on the inner side of the support frame 3, the two ends of the multiple sets of louvers 301 being rotatably connected to the inner wall of the support frame 3, and a horizontal plate 3010 at both ends of the multiple sets of louvers 301 being rotatably connected to one end of the multiple sets of louvers 301, wherein one side of one set of louvers 301 is rotatably connected to a hinge. The connecting block 403 has a hinge rod 404 rotatably connected to one side surface. One end of the hinge rod 404 is rotatably connected to a disc 402. One end of the hinge rod 404 is located at the outer edge of the disc 402. A driving mechanism is provided on one side surface of the disc 402. A sealing component is provided on one side surface of the support frame 3. A support plate 305 is fixedly connected to the inner side surface of the support frame 3. A limiting mechanism is provided on one side surface of the support plate 305. An assembly plate 101 is fixedly connected to the other end of the ventilation duct 1.

[0021] As a technical optimization of this utility model, the drive mechanism includes a drive shaft 401. One end of the drive shaft 401 is fixedly connected to one side surface of the disc 402, and the other end of the drive shaft 401 is fixedly connected to a fan blade 4. A collar 5 is rotatably connected to the side surface of the drive shaft 401. The side surface of the collar 5 is fixedly connected to the inner wall of the ventilation duct 1 through a support rod 501. The fan blade 4 and the drive shaft 401 in the drive mechanism can drive the disc 402 to rotate during the exhaust process. At this time, the disc 402 can drive the louver 301 to swing back and forth through the hinge rod 404 and the hinge block 403, thereby improving the flexibility of the louver 301.

[0022] As a technical optimization of this utility model, the sealing mechanism includes a sleeve 302, which is fixedly connected to one side surface of the support frame 3. A rubber pad 304 is provided on the inner side of the sleeve 302, which is fixedly connected to one side surface of the support frame 3. The rubber pad 304 is aligned with one end of the ventilation duct 1. The sleeve 302 and the rubber pad 304 can seal the connection gap between the support frame 3 and the ventilation duct 1, preventing air leakage between the support frame 3 and the ventilation duct 1.

[0023] As a technical optimization of this utility model, the limiting mechanism includes a limiting rod 308. One end of the limiting rod 308 is fixedly connected to one side surface of the support plate 305. A limiting plate 307 is sleeved on the side surface of the limiting rod 308. One end of the limiting plate 307 is fixedly connected to the inner wall of the ventilation duct 1. The other end of the limiting rod 308 is fixedly connected to a top plate 309. A spring 306 is fixedly connected to one side surface of the top plate 309. One end of the spring 306 is fixedly connected to one side surface of the limiting plate 307. The limiting mechanism... The limiting rod 308 in the middle can pull the support frame 3 outward from one end of the ventilation duct 1. At this time, the support frame 3 is temporarily separated from one end of the ventilation duct 1, which makes it convenient for the staff to clean the louver 301 on the inside of the support frame 3 and prevent dust from accumulating on the side surface of the louver 301 after long-term use. Through the spring 306 fixedly connected to one side surface of the top plate 309, the support frame 3 can be restored to its original position when the staff cleans the louver 301, avoiding the need for manual reset of the support frame 3 and reducing the trouble for the staff.

[0024] As a technical optimization of this utility model, a support shaft 201 is fixedly connected to the upper surface of the ventilation duct 1, and a rubber ring 202 is fixedly connected to the surface of the support shaft 201. A rotating plate 2 is rotatably connected to the side surface of the rubber ring 202. One end of the rotating plate 2 is located on one side surface of the support frame 3. When the support frame 3 is temporarily separated from one end of the ventilation duct 1, the rotating plate 2 can limit the support frame 3, preventing the support frame 3 from returning to its original position under the elastic force of the spring 306, thus avoiding some trouble for the staff to clean the louver 301.

[0025] As a technical optimization of this utility model, a positioning groove 303 is provided in the middle of one side surface of the support frame 3. The inner wall of the positioning groove 303 is lower than the lower surface of the rotating plate 2. When the rotating plate 2 limits the support frame 3, it can be locked inside the positioning groove 303, thereby improving the stability of the rotating plate 2 and preventing the support frame 3 from pushing the rotating plate 2 back to its original position when the rotating plate 2 deviates.

[0026] In use, the fresh air system exhausts air into the room through the ventilation duct 1. The airflow passes through the ventilation duct 1, causing the fan blades 4 to rotate. The fan blades 4 then drive the disc 402 to rotate via the drive shaft 401. The disc 402 then causes one end of the hinge rod 404 to move in a circular motion along the disc 402. Therefore, the hinge rod 404, through the hinge block 403, pushes one set of louvers 301 to swing back and forth. Under the action of the horizontal plate 3010, the louvers 301 drive multiple sets of louvers 301 inside the support frame 3 to swing back and forth synchronously. This allows airflow to enter the room from multiple directions, preventing fresh air from being blown out of the room. When obstructions cause airflow turbulence, the system ensures that fresh air is evenly distributed indoors. When cleaning the louvers 301 inside the support frame 3 after a long period, the worker simply pulls the support frame 3 outwards, separating it from one end of the ventilation duct 1. Then, the worker pushes the rotating plate 2 on the upper surface of the ventilation duct 1. One end of the rotating plate 2 engages with the positioning groove 303, preventing the support frame 3 from returning to its original position. The worker can then clean the louvers 301 from the inside out. After cleaning, the worker pushes the rotating plate 2 away, and the support frame 3 returns to its original position under the elastic force of the spring 306, allowing for continued use.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0029] 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. An airflow guiding and separating device for exhaust purification in a fresh air system, comprising a ventilation duct (1), characterized in that: One end of the ventilation duct (1) is provided with a support frame (3), and the inner side of the support frame (3) is provided with multiple sets of louvers (301). The two ends of the multiple sets of louvers (301) are rotatably connected to the inner wall of the support frame (3), and both ends of the multiple sets of louvers (301) are provided with horizontal plates (3010). The horizontal plates (3010) are rotatably connected to one end of the multiple sets of louvers (301). One side of one set of louvers (301) is rotatably connected with a hinge block (403), and one side surface of the hinge block (403) is rotatably connected to... There is a hinge rod (404), one end of which is rotatably connected to a disc (402), and one end of the hinge rod (404) is located at the outer edge of the disc (402). A driving mechanism is provided on one side surface of the disc (402), a sealing component is provided on one side surface of the support frame (3), and a support plate (305) is fixedly connected to the inner side surface of the support frame (3). A limiting mechanism is provided on one side surface of the support plate (305), and an assembly plate (101) is fixedly connected to the other end of the ventilation duct (1).

2. The airflow guiding and separating device for exhaust air purification in a fresh air system according to claim 1, characterized in that: The driving mechanism includes a drive shaft (401), one end of which is fixedly connected to one side surface of a disc (402), and the other end of which is fixedly connected to a fan blade (4). A collar (5) is rotatably connected to the side surface of the drive shaft (401), and the side surface of the collar (5) is fixedly connected to the inner wall of the ventilation duct (1) via a support rod (501).

3. The airflow guiding and separating device for exhaust air purification in a fresh air system according to claim 1, characterized in that: The sealing mechanism includes a sleeve (302), and the sleeve (302) is fixedly connected to one side surface of the support frame (3). The inner side of the sleeve (302) is provided with a rubber pad (304), and the rubber pad (304) is fixedly connected to one side surface of the support frame (3). The rubber pad (304) is aligned with one end of the ventilation duct (1).

4. The airflow guiding and separating device for exhaust air purification in a fresh air system according to claim 1, characterized in that: The limiting mechanism includes a limiting rod (308), one end of which is fixedly connected to one side surface of a support plate (305). A limiting plate (307) is sleeved on the side surface of the limiting rod (308), one end of which is fixedly connected to the inner wall of the ventilation duct (1). A top plate (309) is fixedly connected to the other end of the limiting rod (308), and a spring (306) is fixedly connected to one side surface of the top plate (309). One end of the spring (306) is fixedly connected to one side surface of the limiting plate (307).

5. The airflow guiding and separating device for exhaust air purification in a fresh air system according to claim 1, characterized in that: The upper surface of the ventilation duct (1) is fixedly connected to a support shaft (201), and a rubber ring (202) is fixedly connected to the surface of the support shaft (201). A rotating plate (2) is rotatably connected to the side surface of the rubber ring (202), and one end of the rotating plate (2) is located on one side surface of the support frame (3).

6. The airflow guiding and separating device for exhaust air purification in a fresh air system according to claim 1, characterized in that: A positioning groove (303) is provided in the middle of one side surface of the support frame (3), and the inner wall of the positioning groove (303) is lower than the lower surface of the rotating plate (2).