Variable air volume adjusting device of fresh air handling unit

Abstract

The utility model discloses a fresh air handling unit variable air volume adjusting device which comprises a fresh air handling unit body, the surface of the fresh air handling unit body is communicated with a ventilation shell, the surface of the ventilation shell is provided with an air volume adjusting mechanism, one side of the ventilation shell is provided with an installation frame, and the top of the installation frame is provided with a shielding mechanism. A dustproof net is detachably arranged on the surface of the mounting frame; the air volume adjusting mechanism comprises a driving shaft, the driving shaft penetrates through the ventilation shell, the driving shaft is rotationally connected with the surface of the penetrating position of the ventilation shell, an adjusting plate is fixed to the surface of the driving shaft, a guide plate is fixed to the lower portion of the inner wall of the ventilation shell, a mounting frame is fixed to the surface of the ventilation shell, and an adjusting structure is arranged on the surface of the mounting frame. The air volume can be dynamically adjusted according to actual requirements through the air volume adjusting mechanism, and the problem that use requirements are difficult to meet due to fixed air hole design is solved.

Description

Technical Field

[0001] This utility model relates to the field of fresh air handling equipment technology, specifically a variable air volume regulating device for a fresh air handling unit. Background Technology

[0002] To facilitate air exchange between the laboratory and the outside environment, existing laboratories typically use fresh air units to expel stale indoor air and introduce fresh outdoor air that has been sterilized, disinfected, and filtered before being introduced into the room, ensuring that the room is always filled with fresh and clean air and creating air circulation.

[0003] Currently, most of the air vents in existing fresh air units have fixed structures, making it difficult to adjust the air volume. When the indoor air volume demand is low, the fixed air vents remain fully open, which makes it difficult to meet the user's needs. To address this, we have proposed a variable air volume adjustment device for fresh air units. Utility Model Content

[0004] The purpose of this utility model is to provide a variable air volume regulating device for a fresh air handling unit. The air volume regulating mechanism can dynamically adjust the air volume according to actual needs, avoiding the problem of not being able to meet the usage requirements caused by a fixed air hole design.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a variable air volume regulating device for a fresh air handling unit, comprising a fresh air handling unit body, a ventilation shell connected to the surface of the fresh air handling unit body, an air volume regulating mechanism provided on the surface of the ventilation shell, an installation frame provided on one side of the ventilation shell, a shielding mechanism provided on the top of the installation frame, and a dustproof net detachably provided on the surface of the installation frame.

[0006] The airflow adjustment mechanism includes a drive shaft that passes through the ventilation housing and is rotatably connected to the surface of the ventilation housing at the penetration point. An adjustment plate is fixed to the surface of the drive shaft, a guide plate is fixed to the lower part of the inner wall of the ventilation housing, and a mounting bracket is fixed to the surface of the ventilation housing. An adjustment structure is provided on the surface of the mounting bracket.

[0007] As a preferred embodiment of the variable air volume adjustment device for a fresh air handling unit according to this utility model, the surface adjustment structure of the mounting bracket includes a first motor, the first motor is fixed to the top of the mounting bracket, the output shaft of the first motor passes through the mounting bracket and is fixed with a lead screw, the bottom end of the lead screw is rotatably connected to the surface of the mounting bracket, a sliding sleeve is threadedly connected to the surface of the lead screw, a drive rod is hinged to the surface of the sliding sleeve, a connecting ring is hinged to the surface of the drive rod, and the connecting ring is fixedly connected to the surface of the drive shaft.

[0008] As a preferred embodiment of the variable air volume regulating device for a fresh air handling unit according to this utility model, the shielding mechanism includes two connecting frames. The connecting frames are fixed to the top of the ventilation shell. A storage shell is fixed to the surface of the connecting frames. An installation shaft passes through the surface of the storage shell. The surface of the installation shaft is rotatably connected to the through-hole of the storage shell. A shielding cloth is fixed to the surface of the installation shaft. The shielding cloth is rolled around the surface of the installation shaft. An outlet groove is opened at the bottom of the storage shell. One end of the shielding cloth passes through the outlet groove and is fixed with a counterweight plate. A driving structure is provided on one side of the storage shell.

[0009] As a preferred embodiment of the variable air volume adjustment device for a fresh air handling unit according to this utility model, the surface driving structure of the housing shell includes a driving shell, the driving shell is fixedly connected to the surface of a connecting frame on one side, a second motor is fixedly fixed to the top of the driving shell, the output shaft of the second motor passes through the driving shell and is fixedly attached to a worm gear, the bottom end of the worm gear is rotatably connected to the inner wall of the driving shell, a worm wheel meshes with the surface of the worm gear, the worm wheel is fixedly connected to the surface of a mounting shaft, and one end of the mounting shaft is rotatably connected to the inner wall of the driving shell.

[0010] As a preferred embodiment of the variable air volume adjustment device for a fresh air unit according to this utility model, four first magnets are embedded and fixed on the surface of the mounting frame, and the dustproof mesh frame is made of iron.

[0011] As a preferred embodiment of the variable air volume adjustment device for a fresh air unit according to this utility model, a support frame is fixed on the surface of the mounting frame, and through grooves are opened on both sides of the surface of the support frame, and retrieval grooves are opened on both the left and right sides of the surface of the dustproof net.

[0012] As a preferred embodiment of the variable air volume adjustment device for a fresh air unit according to this utility model, a second magnet is fixed on the front surface below the support frame.

[0013] As a preferred embodiment of the variable air volume adjustment device for a fresh air handling unit according to this utility model, a guide rod is fixed to the inner wall of the mounting bracket, and the sliding sleeve is slidably connected to the surface of the guide rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention enables dynamic adjustment of airflow according to actual needs through an airflow regulation mechanism, avoiding the problem of fixed air vent design failing to meet usage requirements, significantly improving the operating efficiency of the fresh air unit. The combined design of the shielding mechanism and dustproof net effectively reduces the entry of dust and debris into the ventilation shell, reducing dust accumulation and blockage inside the equipment, extending the service life of the equipment, and reducing maintenance costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2This is a cross-sectional three-dimensional structural diagram of the air volume regulating mechanism of this utility model;

[0018] Figure 3 This is a partial disassembled structural diagram of the present invention;

[0019] Figure 4 This is a cross-sectional structural diagram of the shielding mechanism in this utility model.

[0020] In the diagram: 1. Fresh air unit body; 2. Ventilation shell; 3. Air volume adjustment mechanism; 301. Drive shaft; 302. Adjustment plate; 303. Mounting bracket; 304. First motor; 305. Lead screw; 306. Sliding sleeve; 307. Drive rod; 308. Connecting ring; 309. Guide plate; 310. Guide rod; 4. Mounting frame; 5. Shielding mechanism; 501. Connecting bracket; 502. Storage shell; 503. Mounting shaft; 504. Shielding cloth; 505. Counterweight plate; 506. Drive shell; 507. Second motor; 508. Worm gear; 509. Worm wheel; 6. Dustproof net; 7. First magnet; 8. Support frame; 9. Retrieval slot; 10. Second magnet. Detailed Implementation

[0021] Please see Figures 1-4 A fresh air handling unit variable air volume adjustment device includes a fresh air handling unit body 1, a ventilation shell 2 connected to the surface of the fresh air handling unit body 1, an air volume adjustment mechanism 3 provided on the surface of the ventilation shell 2, an installation frame 4 provided on one side of the ventilation shell 2, a shielding mechanism 5 provided on the top of the installation frame 4, and a dustproof net 6 detachably provided on the surface of the installation frame 4.

[0022] The air volume adjustment mechanism 3 adjusts the size of the air vents as needed to achieve variable air volume adjustment. The dustproof net 6 on the mounting frame 4 filters the air to prevent dust and impurities floating in the air from drifting into the ventilation shell 2 when the fresh air unit body 1 is not working. The shielding mechanism 5 can shield the ventilation shell 2 when needed.

[0023] The air volume adjustment mechanism 3 includes a drive shaft 301, which passes through the ventilation shell 2. The drive shaft 301 is rotatably connected to the surface of the ventilation shell 2 at the point of penetration. An adjustment plate 302 is fixed on the surface of the drive shaft 301. A guide plate 309 is fixed below the inner wall of the ventilation shell 2. A mounting bracket 303 is fixed on the surface of the ventilation shell 2. An adjustment structure is provided on the surface of the mounting bracket 303.

[0024] When the air volume needs to be adjusted, the adjustment structure drives the drive shaft 301 to rotate, which in turn drives the adjustment plate 302 to change its position. The cooperation between the adjustment plate 302 and the guide plate 309 can change the cross-sectional area of ​​the air duct inside the ventilation housing 2, thereby achieving the effect of adjusting the air volume.

[0025] Furthermore, the surface adjustment structure of the mounting bracket 303 includes a first motor 304, which is fixed to the top of the mounting bracket 303. The output shaft of the first motor 304 passes through the mounting bracket 303 and is fixed with a lead screw 305. The bottom end of the lead screw 305 is rotatably connected to the surface of the mounting bracket 303. A sliding sleeve 306 is threadedly connected to the surface of the lead screw 305. A drive rod 307 is hinged to the surface of the sliding sleeve 306. A connecting ring 308 is hinged to the surface of the drive rod 307. The connecting ring 308 is fixedly connected to the surface of the drive shaft 301.

[0026] After the first motor 304 starts, its output shaft drives the lead screw 305 to rotate. Since the lead screw 305 is threadedly connected to the sliding sleeve 306, the rotation of the lead screw 305 will cause the sliding sleeve 306 to move up and down along the lead screw 305. The up and down movement of the sliding sleeve 306 is transmitted to the drive shaft 301 through the drive rod 307 and the connecting ring 308, thereby driving the drive shaft 301 to rotate. This achieves the effect of changing the size of the air hole when the adjusting plate 302 rotates, thus completing the adjustment of the air volume.

[0027] Furthermore, the shielding mechanism 5 includes two connecting frames 501. The connecting frames 501 are fixed to the top of the ventilation shell 2. A storage shell 502 is fixed to the surface of the connecting frames 501. An installation shaft 503 passes through the surface of the storage shell 502. The surface of the installation shaft 503 is rotatably connected to the through-hole of the storage shell 502. A shielding cloth 504 is fixed to the surface of the installation shaft 503. The shielding cloth 504 is wound around the surface of the installation shaft 503. An outlet groove is opened at the bottom of the storage shell 502. One end of the shielding cloth 504 passes through the outlet groove and is fixed with a counterweight plate 505. A drive structure is provided on one side of the storage shell 502.

[0028] When it is necessary to block the air vent of the ventilation housing 2, the drive structure drives the mounting shaft 503 to rotate, and the blocking cloth 504 hangs down naturally under the gravity of the counterweight plate 505, pulling the blocking cloth 504 out from the storage housing 502 to block the air vent of the ventilation housing 2. When it is necessary to open the air inlet, the drive structure rotates in the opposite direction to roll the blocking cloth 504 back onto the surface of the mounting shaft 503. This design can reduce the entry of dust and debris into the dustproof net 6 and the ventilation housing 2 when the ventilation housing 2 is not ventilated, and at the same time, it can be opened quickly when ventilation is needed, improving the ease of use and protection performance of the fresh air unit body 1.

[0029] Furthermore, the surface driving structure of the storage shell 502 includes a driving shell 506, which is fixedly connected to the surface of a connecting frame 501 on one side. A second motor 507 is fixedly fixed to the top of the driving shell 506. The output shaft of the second motor 507 passes through the driving shell 506 and is fixedly connected to a worm gear 508. The bottom end of the worm gear 508 is rotatably connected to the inner wall of the driving shell 506. A worm wheel 509 meshes with the surface of the worm gear 508. The worm wheel 509 is fixedly connected to the surface of a mounting shaft 503. One end of the mounting shaft 503 is rotatably connected to the inner wall of the driving shell 506.

[0030] After the second motor 507 starts, its output shaft drives the worm 508 to rotate. Since the worm 508 meshes with the worm wheel 509, the rotation of the worm 508 will drive the worm wheel 509 to rotate, thereby driving the mounting shaft 503 to rotate, realizing the winding and unfolding of the shielding cloth 504. The transmission structure of the worm 508 and the worm wheel 509 can achieve stable transmission and has a self-locking function to ensure that the shielding cloth 504 will not loosen during unfolding or winding, thus improving the reliability and stability of the shielding mechanism 5.

[0031] Furthermore, four first magnets 7 are embedded and fixed on the surface of the mounting frame 4, and the frame of the dustproof net 6 is made of iron.

[0032] The dustproof net 6 is attracted to the first magnet 7 on the surface of the mounting frame 4 by its iron frame, which makes the dustproof net 6 easy to install and remove. This facilitates cleaning and replacement of the dustproof net 6 and improves the maintenance convenience of the fresh air unit.

[0033] Furthermore, a support frame 8 is fixed to the surface of the mounting frame 4, and through grooves are opened on both sides of the surface of the support frame 8. Removal grooves 9 are opened on both the left and right sides of the surface of the dustproof net 6.

[0034] The support frame 8 is used to support the dustproof net 6, ensuring the installation stability of the dustproof net 6. The design of the pick-up slot 9 and the through slot facilitates user operation and improves the installation and disassembly efficiency of the dustproof net 6.

[0035] Furthermore, a second magnet 10 is fixed to the front surface below the support frame 8, and the counterweight plate 505 is made of iron.

[0036] When the shielding cloth 504 is unfolded, it hangs naturally under the influence of gravity through the counterweight plate 505, and at the same time attracts the second magnet 10 below the support frame 8, further fixing the position of the shielding cloth 504 and improving the reliability of the shielding effect.

[0037] Furthermore, a guide rod 310 is fixed to the inner wall of the mounting bracket 303, and the sliding sleeve 306 is slidably connected to the surface of the guide rod 310.

[0038] When adjusting the air volume, the sliding sleeve 306 moves up and down along the lead screw 305, and slides on the surface of the guide rod 310. This helps to maintain a stable motion trajectory, ensures the smooth rotation of the drive shaft 301, and also guides the lead screw 305.

[0039] Working principle: When variable air volume needs to be adjusted, the first motor 304 drives the lead screw 305 to rotate, which can be used in conjunction with the drive rod 307 and the connecting ring 308 to adjust the rotation angle of the drive shaft 301. This allows the adjusting plate 302 to work with the guide plate 309 to change the cross-sectional area of ​​the air duct inside the ventilation housing 2, thereby increasing or decreasing the size of the air vents. When the fresh air unit body 1 is not in use and the air vents need to be blocked, the second motor 507 starts, and its output shaft drives the worm gear 508 to rotate. The worm gear 508 meshes with the worm wheel 509, driving the mounting shaft 503 to rotate. With the counterweight plate 505 descending on its own, the shielding cloth 504 is pulled out from the storage shell 502. At the same time, the counterweight plate 505 attracts the second magnet 10 below the support frame 8, fixing the position of the shielding cloth 504, thus blocking the ventilation housing 2. This effectively reduces the entry of dust and debris into the ventilation housing 2 and the dustproof net 6, extends the service life of the equipment, and reduces maintenance costs.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 fresh air handling unit variable air volume regulating device, comprising a fresh air handling unit body (1), characterized in that: The new fan unit body (1) surface is communicated with ventilation shell (2), ventilation shell (2) surface is provided with air volume adjusting mechanism (3), ventilation shell (2) one side is provided with mounting frame (4), the mounting frame (4) top is provided with shielding mechanism (5), the mounting frame (4) surface is detachably provided with dust screen (6); The air volume adjusting mechanism (3) includes a drive shaft (301), the drive shaft (301) penetrates the ventilation shell (2), the drive shaft (301) is rotatably connected with the ventilation shell (2), the drive shaft (301) is fixedly connected with the adjusting plate (302), the lower wall of the ventilation shell (2) is fixedly connected with the guide plate (309), the surface of the ventilation shell (2) is fixedly connected with the mounting bracket (303), and the surface of the mounting bracket (303) is provided with an adjusting structure.

2. The fresh air handling unit VAV regulating device according to claim 1, characterized in that: The adjusting structure on the surface of the mounting bracket (303) includes a first motor (304), the first motor (304) is fixed on the top of the mounting bracket (303), the output shaft of the first motor (304) penetrates the mounting bracket (303) and is fixedly connected with a lead screw (305), the bottom end of the lead screw (305) is rotatably connected with the surface of the mounting bracket (303), the surface of the lead screw (305) is threadedly connected with a sliding sleeve (306), the surface of the sliding sleeve (306) is hingedly connected with a drive rod (307), the surface of the drive rod (307) is hingedly connected with a connecting ring (308), and the connecting ring (308) is fixedly connected with the surface of the drive shaft (301).

3. The fresh air handling unit VAV regulating device according to claim 1, characterized in that: The shielding mechanism (5) includes two connecting frames (501), the connecting frames (501) are fixed on the top of the ventilation shell (2), the surface of the connecting frames (501) is fixedly connected with a receiving shell (502), the surface of the receiving shell (502) penetrates an installation shaft (503), the surface of the installation shaft (503) is rotatably connected with the penetration of the receiving shell (502), the surface of the installation shaft (503) is fixedly connected with a shielding cloth (504), the shielding cloth (504) is wound on the surface of the installation shaft (503), the bottom of the receiving shell (502) is provided with an outlet slot, one end of the shielding cloth (504) penetrates the outlet slot and is fixedly connected with a counterweight plate (505), and the receiving shell (502) is provided with a driving structure on one side.

4. The fresh air handling unit VAV regulating device according to claim 3, characterized in that: The driving structure on the surface of the receiving shell (502) includes a drive shell (506), the drive shell (506) is fixedly connected with the surface of one side connecting frame (501), the top of the drive shell (506) is fixedly connected with a second motor (507), the output shaft of the second motor (507) penetrates the drive shell (506) and is fixedly connected with a worm (508), the bottom end of the worm (508) is rotatably connected with the inner wall of the drive shell (506), the surface of the worm (508) is engaged with a worm gear (509), the worm gear (509) is fixedly connected with the surface of the installation shaft (503), and one end of the installation shaft (503) is rotatably connected with the inner wall of the drive shell (506).

5. The fresh air handling unit VAV regulating device according to claim 1, characterized in that: The surface of the mounting frame (4) is embeddedly fixed with four first magnets (7), and the frame of the dust screen (6) is made of iron.

6. The fresh air handling unit VAV regulating device according to claim 1, characterized in that: The mounting frame (4) is fixed with a support frame (8) on the surface, the support frame (8) is provided with a through slot on the surface of both sides, and the dustproof net (6) is provided with a taking slot (9) on the surface of both sides.

7. The fresh air handling unit VAV regulating device according to claim 6, characterized in that: The front surface of the lower side of the support frame (8) is fixed with a second magnet (10).

8. The fresh air handling unit VAV regulating device according to claim 2, characterized in that: The inner wall of the mounting frame (303) is fixed with a guide rod (310), and the sliding sleeve (306) is surface slidingly connected with the guide rod (310).

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