Double-air-inlet efficient ventilation fan

Abstract

The utility model relates to the technical field of ventilation and air conditioning, and discloses a double-air-inlet efficient ventilation fan which comprises a connecting box serving as a connecting body, the inner wall of the connecting box is fixedly connected with a fixing box, the inner wall of the fixing box is slidably connected with a pull frame, the inner wall of the pull frame is slidably connected with a filter screen, and the filter screen is fixedly connected with the connecting box. Fixing frames are fixedly connected to the two sides of the outer wall of the fixing box, pull rods are slidably connected to the inner walls of the fixing frames, limiting plates are fixedly connected to the opposite ends of the pull rods, inserting blocks are fixedly connected to the opposite ends of the limiting plates, and springs are arranged between the fixing frames and the inner walls of the limiting plates. According to the air exchange system, the limiting plate is driven by pulling the pull rod, the limiting plate drives the insertion block to be separated from the fixing hole, then the pull frame is pulled to be separated from the fixing box, and then the filter screen is replaced, so that dust, impurities and pollutants can be effectively filtered, the purification effect of the air exchange system is kept, and the indoor air quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation and air conditioning technology, and in particular to a dual-inlet high-efficiency ventilation fan. Background Technology

[0002] In modern architecture, industrial production, and public facilities, good ventilation is crucial for maintaining indoor air quality, protecting human health, and optimizing the production environment. As people's demands for living and working environments continue to rise, and as industrial production scales up and becomes more precise, the performance requirements for ventilation equipment are becoming increasingly stringent, necessitating the use of dual-intake high-efficiency ventilation fans.

[0003] During use, filters gradually accumulate dust and debris. Since filters are fixed with bolts, they are difficult to clean thoroughly. As dust accumulates, the pores of the filter gradually become blocked, increasing the resistance when air passes through the filter, resulting in reduced ventilation. This, in turn, affects the overall ventilation efficiency of the ventilation fan, hindering the exchange of indoor and outdoor air and failing to effectively improve indoor air quality. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a dual-inlet high-efficiency ventilation fan. By pulling the pull rod, the limiting plate is driven, and the limiting plate drives the insert block to disengage from the fixing hole. At this time, the pull bracket is pulled out of the fixing box, and the filter screen can be replaced. This can effectively filter dust, impurities and pollutants, maintain the purification effect of the ventilation system, and improve indoor air quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A dual-inlet high-efficiency ventilation fan includes: a connecting box as the main connecting body; a fixing box fixedly connected to the inner wall of the connecting box; a pull bracket slidably connected to the inner wall of the fixing box; a filter screen slidably connected to the inner wall of the pull bracket; fixing frames fixedly connected to both sides of the outer wall of the fixing box; a pull rod slidably connected to the inner wall of each fixing frame; a limit plate fixedly connected to one end of each pull rod; a plug fixedly connected to one end of each limit plate; a spring provided between the inner walls of the fixing frames and the limit plates; a suction fan fixedly connected to the rear end of the connecting box; and anti-backflow components provided on both sides of the inner wall of the connecting box.

[0007] Furthermore, one end of each spring is connected to a limiting plate, and the other end of each spring is connected to the inner wall of the fixing frame.

[0008] Furthermore, the outer walls of the limiting plates are slidably connected to the inner walls of the fixing frame, and the outer diameter of the filter screen is larger than the inner diameter of the connecting box.

[0009] Furthermore, the inner wall of the bracket is provided with multiple fixing holes corresponding to the insert block.

[0010] Furthermore, the anti-backflow assembly includes fixed rings fixedly connected to both sides of the inner wall of the connecting box. A sliding box is fixedly connected to the opposite end of each fixed ring. A slider is slidably connected to the inner wall of each sliding box. A connecting plate is fixedly connected to the opposite end of each slider. A plug is fixedly connected to the opposite end of each connecting plate on the right. A through-hole head is fixedly connected to the opposite end of each connecting plate on the left. A tension spring is provided between the fixed rings and the inner wall of the slider.

[0011] Furthermore, the outer walls of both the plug and the through-hole head are slidably connected to the inner wall of the fixing ring.

[0012] Furthermore, one end of each tension spring is connected to the slider, and the other end of each tension spring is connected to the inner wall of the fixing ring.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by pulling the pull rod, the limiting plate is driven, and the limiting plate drives the insert block to disengage from the fixing hole. At this time, the pull bracket is pulled out of the fixing box, and the filter screen is replaced. This can effectively filter dust, impurities and pollutants, maintain the purification effect of the ventilation system, and improve indoor air quality.

[0015] 2. In this utility model, air is drawn in by a suction fan. When the air is drawn in, it pushes the plug, which drives the right connecting plate. The right connecting plate drives the slider, which in turn drives the through-hole head to insert into the left fixing ring to allow air to flow. When the suction fan is turned off, the tension spring pulls the slider, which drives the right connecting plate to insert into the right fixing ring for sealing. This ensures unidirectional airflow, reduces energy loss, and improves ventilation efficiency. Attached Figure Description

[0016] Figure 1 This is an isometric view of a dual-inlet high-efficiency ventilation fan proposed in this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the fixing box structure of a dual-inlet high-efficiency ventilation fan proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the bracket of a dual-inlet high-efficiency ventilation fan proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the mounting frame for a dual-inlet high-efficiency ventilation fan proposed in this utility model.

[0020] Figure 5This is a schematic cross-sectional view of the connection box structure of a dual-inlet high-efficiency ventilation fan proposed in this utility model;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the sliding box of a dual-inlet high-efficiency ventilation fan proposed in this utility model.

[0022] Legend:

[0023] 1. Connecting box; 2. Fixing box; 3. Pull bracket; 4. Filter screen; 5. Fixing bracket; 6. Pull rod; 7. Limiting plate; 8. Insert block; 9. Spring; 10. Fixing hole; 11. Fan; 12. Fixing ring; 13. Sliding box; 14. Sliding block; 15. Connecting plate; 16. Plug; 17. Through hole head; 18. Tension spring. Detailed Implementation

[0024] 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.

[0025] Reference Figure 2 - Figure 4 This utility model provides an embodiment of a dual-inlet high-efficiency ventilation fan, comprising: a connecting box 1 as the connecting body; a fixing box 2 fixedly connected to the inner wall of the connecting box 1; a pull bracket 3 slidably connected to the inner wall of the fixing box 2; a filter screen 4 slidably connected to the inner wall of the pull bracket 3; fixing frames 5 fixedly connected to both sides of the outer wall of the fixing box 2; a pull rod 6 slidably connected to the inner wall of each fixing frame 5; a limit plate 7 fixedly connected to one opposite end of each pull rod 6; an insert block 8 fixedly connected to one opposite end of each limit plate 7; a spring 9 provided between the inner walls of the fixing frame 5 and the limit plate 7; a suction fan 11 fixedly connected to the rear end of the connecting box 1; anti-backflow components provided on both sides of the inner wall of the connecting box 1; one end of each spring 9 connected to the limit plate 7; the other end of each spring 9 connected to the inner wall of each fixing frame 5; the outer wall of each limit plate 7 slidably connected to the inner wall of the fixing frame 5; the outer diameter of the filter screen 4 being larger than the inner diameter of the connecting box 1; and multiple fixing holes 10 provided on the inner wall of the pull bracket 3 corresponding to the insert block 8.

[0026] Specifically, when air enters the equipment, filter 4 filters it, intercepting dust, impurities, and pollutants, effectively maintaining the purification effect of the ventilation system and improving indoor air quality. When filter 4 needs to be replaced, pull rod 6 moves the limiting plate 7, causing the insert 8 to disengage from the fixing hole 10. At this time, pull bracket 3 can be pulled to remove it from the fixing box 2, and then filter 4 can be replaced. After filter 4 is replaced, during installation, insert pull bracket 3 into fixing box 2. After it is inserted into place, release pull rod 6. The elastic force of spring 9 pushes the limiting plate 7, causing the insert 8 to move and insert into fixing hole 10, completing the fixation of pull bracket 3 and fixing box 2, ensuring that filter 4 is securely installed in the equipment and functions normally.

[0027] Reference Figure 1 , Figure 5 and Figure 6 The anti-backflow assembly includes fixed rings 12 fixedly connected to both sides of the inner wall of the connecting box 1. A sliding box 13 is fixedly connected to the opposite end of each fixed ring 12. A slider 14 is slidably connected to the inner wall of each sliding box 13. A connecting plate 15 is fixedly connected to the opposite end of each slider 14. A plug 16 is fixedly connected to the opposite end of each right connecting plate 15. A through-hole head 17 is fixedly connected to the opposite end of each left connecting plate 15. A tension spring 18 is provided between the inner walls of the fixed rings 12 and the sliders 14. The outer walls of the plugs 16 and the through-hole heads 17 are slidably connected to the inner wall of the fixed rings 12. One end of each tension spring 18 is connected to the slider 14, and the other end of each tension spring 18 is connected to the inner wall of the fixed rings 12.

[0028] Specifically, after the suction fan 11 is started, the suction force it generates drives the airflow to enter through the air inlets on both sides of the connecting box 1. Under the push of the airflow, the plug 16 is displaced, which in turn drives the right connecting plate 15 to move. Through the linkage of the slider 14, the left connecting plate 15 also moves, eventually allowing the through-hole head 17 to be inserted into the left fixing ring 12, thus creating a smooth airflow channel. When the suction fan 11 stops running, the tension spring 18 takes effect, pulling the slider 14, causing the right connecting plate 15 to drive the plug 16 to be inserted into the right fixing ring 12, forming a tight sealing structure. This design ensures that the air can only flow in one direction, effectively avoiding energy loss caused by airflow backflow and greatly improving ventilation efficiency. At the same time, the through-hole head 17, plug 16 and fixing ring 12 adopt a high-precision sealing design, which can ensure the stable operation of the unidirectional flow mechanism while minimizing air leakage, providing a solid guarantee for the efficient operation of the equipment.

[0029] Working principle: When in use, the suction fan 11 is activated to generate suction. The suction fan 11 draws air in through the openings on both sides of the connecting box 1. This air intake pushes the plug 16 to move, which in turn moves the right connecting plate 15. The right connecting plate 15 then moves the slider 14, which in turn moves the left connecting plate 15. The left connecting plate 15 then moves the through-hole head 17, inserting the left fixing ring 12 to allow airflow. When the suction fan 11 is turned off, the tension spring 18 pulls the slider 14. This movement of the slider 14 moves the right connecting plate 15, which in turn inserts the right fixing ring 12 to seal, ensuring unidirectional airflow and reducing energy loss. This improves ventilation efficiency. The sealing between the through-hole head 17, plug 16, and fixing ring 12 is extremely high. When air enters, the filter screen 4 filters the air. When the filter screen 4 needs to be replaced, pull the lever 6 to move the limiting plate 7. When the limiting plate 7 moves, it causes the insert 8 to disengage from the inside of the fixing hole 10. At this time, pull the bracket 3 to disengage from the inside of the fixing box 2, and then replace the filter screen 4. This effectively filters dust, impurities, and pollutants, maintains the purification effect of the ventilation system, and improves indoor air quality. During installation, insert the bracket 3 into the inside of the fixing box 2. When inserting, release the lever 6. When the lever 6 is released, the spring 9 will spring the limiting plate 7. When the limiting plate 7 is springed, it causes the insert 8 to move. When the insert 8 moves, it is inserted into the fixing hole 10 for fixation.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double intake high efficiency ventilation fan, characterized in that, Include: As the connecting box (1) of the connecting body, the inner wall of the connecting box (1) is fixedly connected with the fixed box (2), the inner wall of the fixed box (2) is slidably connected with the pull frame (3), the inner wall of the pull frame (3) is slidably connected with the filter screen (4), the outer wall of the fixed box (2) is fixedly connected with the fixed frame (5) on both sides, the inner wall of the fixed frame (5) is slidably connected with the pull rod (6), the opposite end of the pull rod (6) is fixedly connected with the limit plate (7), the opposite end of the limit plate (7) is fixedly connected with the plug-in block (8), the inner wall between the fixed frame (5) and the limit plate (7) is provided with the spring (9), the rear end of the connecting box (1) is fixedly connected with the air suction fan (11), and the inner wall of the connecting box (1) is provided with the anti-backflow assembly on both sides.

2. The double intake high efficiency ventilation fan according to claim 1, wherein: One end of the spring (9) is connected with the limit plate (7), and the other end of the spring (9) is connected with the inner wall of the fixed frame (5).

3. The double intake high efficiency ventilation fan according to claim 1, wherein: The outer wall of the limit plate (7) is slidably connected to the inner wall of the fixed frame (5), and the outer diameter of the filter screen (4) is greater than the inner diameter of the connecting box (1).

4. The double intake high efficiency ventilation fan according to claim 1, wherein: A plurality of fixing holes (10) are arranged on the inner wall of the pull frame (3) corresponding to the plug-in block (8).

5. The dual air intake high efficiency range hood of claim 1, wherein: The anti-backflow assembly comprises a fixed ring (12) fixedly connected to the inner wall of the connecting box (1) on both sides, opposite ends of the fixed ring (12) are fixedly connected with a sliding box (13), the inner wall of the sliding box (13) is slidably connected with a sliding block (14), opposite ends of the sliding block (14) are fixedly connected with a connecting plate (15), opposite ends of the connecting plate (15) on the right are fixedly connected with a plug (16), and opposite ends of the connecting plate (15) on the left are fixedly connected with a through hole head (17), the inner wall between the fixed ring (12) and the sliding block (14) is provided with a tension spring (18).

6. The dual air intake high efficiency range hood of claim 5, wherein: The outer wall of the plug (16) and the through hole head (17) is slidably connected to the inner wall of the fixed ring (12).

7. The dual air intake high efficiency range hood of claim 5, wherein: One end of the tension spring (18) is connected with the sliding block (14), and the other end of the tension spring (18) is connected with the inner wall of the fixed ring (12).

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