Fresh air system air volume regulating device

Abstract

This utility model discloses an airflow regulating device for a fresh air system, specifically relating to the field of fresh air systems. It includes an air supply housing with an air inlet and an air outlet. A rotating shaft is rotatably connected to the air inlet, and a rotating plate is fixedly connected to the shaft. The rotating plate is rotatably connected inside the air inlet. A second synchronous wheel is fixedly connected to one end of the rotating shaft. A switch assembly is installed on the air supply housing, and the output end of the switch assembly is connected to the second synchronous wheel. The switch assembly drives the second synchronous wheel to rotate. A fixed ventilation plate is fixedly connected to the air outlet, and a rotating ventilation plate is rotatably connected to the inner side of the fixed ventilation plate. This utility model, through the design of a fixed ventilation plate and a rotating ventilation plate overlapping each other (similar to a mosquito coil), and a motor-driven gear set, controls the overlapping area of ​​the ventilation ducts of the two, thereby regulating the airflow at the air outlet. This allows the fan to operate within its high-efficiency operating range, significantly reducing ineffective energy consumption and achieving a dual improvement in operating efficiency and energy saving.

Description

Technical Field

[0001] This utility model relates to the field of fresh air system technology, and more specifically, to an air volume regulating device for fresh air systems. Background Technology

[0002] A fresh air system air volume regulating device is a device that controls the fresh air flow through mechanical or electronic means. It can dynamically adjust the wind speed and air volume according to the indoor environment requirements. Its core function is to optimize air circulation efficiency and achieve energy saving and consumption reduction. In addition, the device can also be matched with dust removal and filtration modules to further purify the air. It is widely used in fresh air systems in residential, office buildings and industrial settings.

[0003] Traditional fresh air systems rely heavily on simple louvers or damper-type air valves for airflow regulation. Their regulation mechanism is essentially a coarse-grained position switching, which cannot achieve precise and linear control of airflow. In actual operation, this regulation method often forces the fan to work in a high-resistance or inefficient range. Not only is it difficult to respond to the indoor environment's demand for subtle changes in airflow, but it also causes significant power loss due to the motor being under continuous high load, resulting in continuous energy waste.

[0004] In summary, to effectively control airflow, it is necessary to address the problem that traditional fresh air systems have simple airflow regulation devices that cannot achieve precise and linear control of airflow, resulting in significant power consumption. This would enable fresh air systems to regulate airflow more accurately and save energy. Utility Model Content

[0005] The problem to be solved by the air volume regulating device for fresh air system provided by this utility model is that the traditional air volume regulating device for fresh air system has a simple structure and cannot achieve precise and linear control of airflow, resulting in significant power loss.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air volume regulating device for a fresh air system, comprising an air supply housing, an air inlet and an air outlet, a rotating shaft rotatably connected to the air inlet, a rotating plate fixedly connected to the rotating shaft, the rotating plate rotatably connected inside the air inlet, a second synchronous wheel fixedly connected to one end of the rotating shaft, a switch assembly installed on the air supply housing, the output end of the switch assembly connected to the second synchronous wheel, the switch assembly driving the second synchronous wheel to rotate, a fixed ventilation plate fixedly connected to the air outlet, a rotating ventilation plate rotatably connected to the inner side of the fixed ventilation plate, a third gear fixedly connected to the outer ring of the rotating ventilation plate, and an regulating component installed inside the air supply housing, the output end of the regulating component connected to the third gear, the regulating component driving the third gear to rotate.

[0007] In a preferred embodiment, the switching assembly includes a first motor fixedly connected to the air supply housing, a first synchronous pulley fixedly connected to the output end of the first motor via a shaft, and a belt with one end sleeved on the outer ring of the first synchronous pulley and the other end sleeved on the second synchronous pulley. The first motor is used to drive the first synchronous pulley to rotate, and when the first synchronous pulley rotates, it drives the second synchronous pulley to rotate via the belt.

[0008] In a preferred embodiment, the adjustment assembly includes a third motor fixedly connected inside the air supply housing and a fourth gear fixedly connected to the output end of the third motor via a shaft. The fourth gear and the third gear are meshed together, and the third motor is used to drive the fourth gear to rotate. When the fourth gear rotates, it drives the third gear to rotate.

[0009] In a preferred embodiment, a plurality of cleaning scrapers are fixedly connected to the rotating ventilation plate, and the cleaning scrapers are slidably connected to the fixed ventilation plate.

[0010] In a preferred embodiment, a filter plate and a dehumidifier are arranged sequentially below the rotating plate, and the filter plate and the dehumidifier are fixedly connected inside the air supply housing.

[0011] In a preferred embodiment, a shroud is fixedly connected inside the air supply housing, a transmission rod is rotatably connected inside the shroud, an impeller is fixedly connected to the transmission rod, the impeller and the shroud are rotatably connected, a second gear is fixedly connected to one end of the transmission rod, an air supply assembly is installed on the air supply housing, the output end of the air supply assembly is connected to the second gear, and the air supply assembly is used to drive the second gear to rotate.

[0012] In a preferred embodiment, the air supply assembly includes a second motor fixedly connected to the air supply housing and a first gear fixedly connected to the output end of the second motor via a shaft. The first gear and the second gear are meshed together. The second motor is used to drive the first gear to rotate. When the first gear rotates, it drives the second gear to rotate.

[0013] In a preferred embodiment, two sets of guide vanes are provided on both sides of the impeller, and the two sets of guide vanes are fixedly connected between the air supply casing and the shroud.

[0014] The beneficial effects of this utility model are as follows: This invention utilizes a design that combines a fixed ventilation plate and a rotating ventilation plate, resembling a mosquito coil, and employs a motor-driven gear set for precise transmission. This allows for precise control of the overlapping area of ​​the ventilation channels, enabling continuous, linear, and stepless adjustment of the airflow from the outlet from completely closed to its maximum opening. This allows users to accurately set the airflow according to their actual environmental needs, avoiding the "over-air" or "under-air" phenomena common in traditional adjustment methods. It ensures that the fan always operates within its high-efficiency working range, significantly reducing ineffective energy consumption and achieving a dual improvement in operating efficiency and energy saving. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the fairing structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the switch assembly structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the rotating plate of this utility model.

[0020] Figure 6 This is a schematic diagram of the fixed ventilation plate structure of this utility model.

[0021] Figure 7 This is a schematic diagram of the rotating ventilation plate structure of this utility model.

[0022] Figure 8 This is a schematic diagram of another embodiment of the air supply housing of this utility model.

[0023] The attached diagram is labeled as follows: 1. Air supply casing; 101. Air inlet; 102. Air outlet; 103. Inspection window; 201. First motor; 202. First synchronous pulley; 203. Belt; 3. Second synchronous pulley; 4. Rotating shaft; 5. Rotating plate; 6. Filter plate; 7. Dehumidifier; 8. Rectifier; 901. Second motor; 902. First gear; 10. Second gear; 11. Transmission rod; 12. Impeller; 13. Guide vane; 14. Fixed ventilation plate; 15. Rotating ventilation plate; 16. Third gear; 1701. Third motor; 1702. Fourth gear; 18. Cleaning scraper; 19. Sliding door. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Refer to the instruction manual appendix Figures 1 to 8 A fresh air system airflow regulating device includes an air supply housing 1, an air inlet 101 and an air outlet 102. A rotating shaft 4 is rotatably connected to the air inlet 101, and a rotating plate 5 is fixedly connected to the rotating shaft 4. The rotating plate 5 is rotatably connected inside the air inlet 101. A second synchronous wheel 3 is fixedly connected to one end of the rotating shaft 4. A switch assembly is installed on the air supply housing 1. The output end of the switch assembly is connected to the second synchronous wheel 3. The switch assembly is used to drive the second synchronous wheel 3 to rotate. A fixed ventilation plate 14 is fixedly connected to the air outlet 102. A rotating ventilation plate 15 is rotatably connected to the inner side of the fixed ventilation plate 14. A third gear 16 is fixedly connected to the outer ring of the rotating ventilation plate 15. An regulating component is installed inside the air supply housing 1. The output end of the regulating component is connected to the third gear 16. The regulating component is used to drive the third gear 16 to rotate.

[0026] It should be noted that the size of the air inlet 101 is adapted to the rotating plate 5, and the size of the air outlet 102 is adapted to the fixed ventilation plate 14. The fixed ventilation plate 14 and the rotating ventilation plate 15 are provided with spiral channels similar to mosquito coils. The channel openings are arranged radially from the inside to the outside. The fixed ventilation plate 14 and the rotating ventilation plate 15 are independent of each other but stacked along the same axis, which ensures coaxiality and stability during rotation. By rotating the rotating ventilation plate 15, the overlapping area of ​​the two channels is changed. The larger the overlapping area, the smoother the ventilation channel and the greater the ventilation volume. When they are completely offset, they are completely closed.

[0027] Based on another embodiment of the air supply housing 1, please refer to Figure 8 A new maintenance window 103 is added to the location where the adjustment component is installed on the air supply housing 1. A sliding door 19 is then installed inside the maintenance window 103. When it is necessary to perform maintenance on the parts inside the adjustment component, the sliding door 19 can be pushed to open the maintenance window 103 for quick maintenance.

[0028] Refer to the instruction manual appendix Figure 4 The switching assembly includes a first motor 201 fixedly connected to the air supply housing 1, a first synchronous pulley 202 fixedly connected to the output end of the first motor 201 via a shaft, and a belt 203 with one end sleeved on the outer ring of the first synchronous pulley 202. The other end of the belt 203 is sleeved on the second synchronous pulley 3. The first motor 201 is used to drive the first synchronous pulley 202 to rotate. When the first synchronous pulley 202 rotates, it drives the second synchronous pulley 3 to rotate through the belt 203.

[0029] It should be noted that the first motor 201 is installed on the outside of the air supply housing 1, and drives the second synchronous pulley 3 to rotate through the first synchronous pulley 202 and the belt 203. The friction between the first synchronous pulley 202, the second synchronous pulley 3 and the belt 203 is large enough to ensure stable power transmission.

[0030] Refer to the instruction manual appendix Figures 6 to 7 The adjustment assembly includes a third motor 1701 fixedly connected inside the air supply housing 1 and a fourth gear 1702 fixedly connected to the output end of the third motor 1701 via a shaft. The fourth gear 1702 and the third gear 16 are meshed together. The third motor 1701 is used to drive the fourth gear 1702 to rotate. When the fourth gear 1702 rotates, it drives the third gear 16 to rotate.

[0031] It should be noted that the third motor 1701 is installed on the outer wall of the air supply housing 1, and drives the third gear 16 to rotate through the fourth gear 1702. The dimensions of the fourth gear 1702 and the third gear 16 are matched to achieve stable power transmission.

[0032] Refer to the instruction manual appendix Figure 7 Several cleaning scrapers 18 are fixedly connected to the rotating ventilation plate 15, and the cleaning scrapers 18 are slidably connected to the fixed ventilation plate 14.

[0033] It should be noted that the cleaning scraper 18 is installed at one end of each channel of the rotating ventilation plate 15, and the size of the cleaning scraper 18 is the same as the channel size of the fixed ventilation plate 14, so that it can slide within the channel of the fixed ventilation plate 14 for cleaning.

[0034] Another embodiment based on the cleaning scraper 18: the fixed installation method of the cleaning scraper 18 in the original technical solution is improved to a detachable installation method. Specifically, the cleaning scraper 18 can be installed on the rotating ventilation plate 15 by magnetic snap-fit, which facilitates the subsequent disassembly and replacement of a single cleaning scraper 18 and simplifies the maintenance process.

[0035] Refer to the instruction manual appendix Figure 5 Below the rotating plate 5, there are a filter plate 6 and a dehumidifier 7 arranged in sequence. The filter plate 6 and the dehumidifier 7 are fixedly connected inside the air supply housing 1.

[0036] It should be noted that the air inlet 101, filter plate 6, dehumidifier 7 and air outlet 102 are connected in sequence. After the fresh air enters the air supply housing 1 through the air inlet 101, it is first filtered by the filter plate 6, then dehumidified by the dehumidifier 7, and finally discharged through the air outlet 102.

[0037] Refer to the instruction manual appendix Figure 3A shroud 8 is fixedly connected inside the air supply housing 1. A transmission rod 11 is rotatably connected inside the shroud 8. An impeller 12 is fixedly connected to the transmission rod 11. The impeller 12 and the shroud 8 are rotatably connected. A second gear 10 is fixedly connected to one end of the transmission rod 11. An air supply assembly is installed on the air supply housing 1. The output end of the air supply assembly is connected to the second gear 10. The air supply assembly is used to drive the second gear 10 to rotate.

[0038] It should be noted that the fairing 8 is streamlined, which effectively improves aerodynamic efficiency and reduces noise level. The impeller 12 is made of high-strength, lightweight material to reduce weight and inertia, improve start-stop response speed and reduce bearing load.

[0039] Refer to the instruction manual appendix Figure 3 The air supply assembly includes a second motor 901 fixedly connected to the air supply housing 1 and a first gear 902 fixedly connected to the output end of the second motor 901 via a shaft. The first gear 902 and the second gear 10 are meshed together. The second motor 901 is used to drive the first gear 902 to rotate. When the first gear 902 rotates, it drives the second gear 10 to rotate.

[0040] It should be noted that the second motor 901 is installed on the outer wall of the air supply housing 1, and drives the second gear 10 to rotate through the first gear 902. The first gear 902 and the second gear 10 are matched in size to achieve stable power transmission.

[0041] Refer to the instruction manual appendix Figure 3 Two sets of guide vanes 13 are provided on both sides of the impeller 12, and the two sets of guide vanes 13 are fixedly connected between the air supply casing 1 and the rectifier 8.

[0042] It should be noted that before the airflow enters the impeller 12, the guide vane 13 will give the airflow an initial angle that is the same as or opposite to the rotation direction of the impeller 12, so that the airflow can impact the blades of the impeller 12 more smoothly and evenly, thereby improving efficiency and reducing intake noise.

[0043] Working principle: When the fresh air system is working, the first motor 201 outputs power to the first synchronous pulley 202, causing the first synchronous pulley 202 to rotate. This drives the belt 203 and the second synchronous pulley 3 to rotate together. The second synchronous pulley 3 drives the rotating shaft 4 to rotate, thereby driving the rotating plate 5 to rotate and opening the air inlet 101. The second motor 901 outputs power to the first gear 902, causing the first gear 902 to rotate. The first gear 902 drives the second gear 10 to rotate. The second gear 10 drives the transmission rod 11 to rotate inside the shroud 8. The transmission rod 11 drives the impeller 12 to rotate, thus directing the airflow through the inlet. Air is drawn into the air supply housing 1 through the air outlet 101, and then the airflow passes through the filter plate 6, dehumidifier 7 and guide vane 13 before being discharged through the air outlet 102. At the same time, the third motor 1701 outputs power to the fourth gear 1702, causing the fourth gear 1702 to rotate, which in turn drives the third gear 16 meshing on one side to rotate. The third gear 16 drives the rotating ventilation plate 15 to rotate on the fixed ventilation plate 14, controlling the opening degree of the ventilation duct and thus controlling the air volume. The rotating ventilation plate 15 also drives the cleaning scraper 18 to rotate inside the fixed ventilation plate 14, scraping away the dust on the fixed ventilation plate 14.

[0044] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A fresh air system air volume adjusting device, characterized by: The device includes an air supply housing (1), which has an air inlet (101) and an air outlet (102). A rotating shaft (4) is rotatably connected to the air inlet (101), and a rotating plate (5) is fixedly connected to the rotating shaft (4). The rotating plate (5) is rotatably connected inside the air inlet (101). A second synchronous wheel (3) is fixedly connected to one end of the rotating shaft (4). A switch assembly is installed on the air supply housing (1). The output end of the switch assembly is connected to the second synchronous wheel (3). The switch assembly is used to drive the second synchronous wheel (3) to rotate. A fixed ventilation plate (14) is fixedly connected to the air outlet (102). A rotating ventilation plate (15) is rotatably connected to the inner side of the fixed ventilation plate (14). A third gear (16) is fixedly connected to the outer ring of the rotating ventilation plate (15). An adjustment assembly is installed inside the air supply housing (1). The output end of the adjustment assembly is connected to the third gear (16). The adjustment assembly is used to drive the third gear (16) to rotate.

2. The fresh air system air volume adjusting device according to claim 1, characterized in that: The switching assembly includes a first motor (201) fixedly connected to the air supply housing (1), a first synchronous pulley (202) fixedly connected to the output end of the first motor (201) via a shaft, and a belt (203) with one end sleeved on the outer ring of the first synchronous pulley (202). The other end of the belt (203) is sleeved on the second synchronous pulley (3). The first motor (201) is used to drive the first synchronous pulley (202) to rotate. When the first synchronous pulley (202) rotates, it drives the second synchronous pulley (3) to rotate via the belt (203).

3. The air volume regulating device for a fresh air system according to claim 1, characterized in that: The adjustment assembly includes a third motor (1701) fixedly connected inside the air supply housing (1) and a fourth gear (1702) fixedly connected to the output end of the third motor (1701) via a shaft. The fourth gear (1702) and the third gear (16) are meshed together. The third motor (1701) is used to drive the fourth gear (1702) to rotate. When the fourth gear (1702) rotates, it drives the third gear (16) to rotate.

4. The fresh air system air volume regulating device according to claim 1, characterized in that: Several cleaning scrapers (18) are fixedly connected to the rotating ventilation plate (15), and the cleaning scrapers (18) and the fixed ventilation plate (14) are slidably connected.

5. The fresh air system air volume regulating device according to claim 1, characterized in that: A filter plate (6) and a dehumidifier (7) are arranged in sequence below the rotating plate (5). The filter plate (6) and the dehumidifier (7) are fixedly connected inside the air supply housing (1).

6. The air volume regulating device for a fresh air system according to claim 1, characterized in that: A shroud (8) is fixedly connected inside the air supply housing (1). A transmission rod (11) is rotatably connected inside the shroud (8). An impeller (12) is fixedly connected to the transmission rod (11). The impeller (12) and the shroud (8) are rotatably connected. A second gear (10) is fixedly connected to one end of the transmission rod (11). An air supply assembly is installed on the air supply housing (1). The output end of the air supply assembly is connected to the second gear (10). The air supply assembly is used to drive the second gear (10) to rotate.

7. The fresh air system air volume regulating device according to claim 6, characterized in that: The air supply assembly includes a second motor (901) fixedly connected to the air supply housing (1) and a first gear (902) fixedly connected to the output end of the second motor (901) via a shaft. The first gear (902) and the second gear (10) are meshed together. The second motor (901) is used to drive the first gear (902) to rotate. When the first gear (902) rotates, it drives the second gear (10) to rotate.

8. The fresh air system air volume adjusting device according to claim 6, characterized in that: Two sets of guide vanes (13) are provided on both sides of the impeller (12), and the two sets of guide vanes (13) are fixedly connected between the air supply casing (1) and the shroud (8).

Images