Energy-saving building fresh air circulation system

Abstract

This invention discloses an energy-saving building fresh air circulation system, including an exhaust mechanism and an intake mechanism. The intake mechanism includes an intake box, a first filter assembly, a second filter assembly, a control assembly, and a solar panel. The intake box has an air inlet and an air outlet. The first filter assembly is rotatably connected to the intake box and has a first receiving cavity communicating with the air inlet. The second filter assembly is rotatably connected to both the intake box and the first filter assembly, and has a second receiving cavity communicating with both the first receiving cavity and the air outlet. The control assembly is connected to both the first and second filter assemblies. The solar panel is fixed to the intake box and electrically connected to the control assembly. The energy-saving building fresh air circulation system provided by this invention addresses the problems of existing technologies where ordinary purification systems cannot meet the required purification effect in harsh environments, and multi-layer filtration purification systems are costly and prone to significant waste.

Description

Technical Field

[0001] This invention relates to the field of fresh air circulation technology, and in particular to an energy-saving building fresh air circulation system. Background Technology

[0002] Ventilation is a building environmental control technology that uses methods such as air exchange and dilution or ventilation to control the spread and harm of air pollutants, thereby ensuring indoor and outdoor air quality. A ventilation system is a complete set of devices that achieves this function, including air inlets, exhaust outlets, air ducts, fans, control systems, and other auxiliary equipment. Existing filtration equipment is mostly a single-structure design; it draws in air, filters it, and then introduces it into the building. Due to changes in the external environment, air quality varies. When the outside air quality is poor, the thin filter components in ordinary purification systems cannot meet the required filtration effect. On the other hand, multi-layer filter components become wasteful and increase operating costs in environments with good outside air quality. Furthermore, the filtration process passes through all filter components, causing contamination and shortening the material's lifespan.

[0003] Furthermore, most existing ventilation and purification systems use activated carbon to adsorb and remove pollutants, requiring frequent replacement of filters or activated carbon materials. Each replacement increases operating costs, and the disassembly and reassembly are cumbersome and inconvenient. Additionally, the subsequent treatment of activated carbon is difficult, which is environmentally unfriendly and results in poor durability. Therefore, it is necessary to develop an energy-efficient building fresh air circulation system to address these shortcomings. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving building fresh air circulation system that solves the problems of existing ordinary purification systems failing to meet the required purification effect in harsh environments; multi-layer filtration purification systems being costly, and causing contamination of all filter components when air passes through in excellent environments, resulting in significant waste.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This invention discloses an energy-saving building fresh air circulation system, comprising an exhaust mechanism and an air intake mechanism, wherein the air intake mechanism includes:

[0007] An air inlet box is fixed to the building wall, and the air inlet box is provided with an air inlet and an air outlet.

[0008] The first filter assembly is rotatably connected to the air inlet box and has a first receiving cavity communicating with the air inlet. The first receiving cavity is provided with a plurality of equal-spaced first filter cavities along the circumference of the first filter assembly.

[0009] The second filter component is rotatably connected to both the air inlet box and the first filter component, and is coaxially arranged with the first filter component. The second filter component passes through the first filter component. The second filter component is provided with a second receiving cavity that communicates with both the first receiving cavity and the air outlet. The second receiving cavity corresponds one-to-one with the first receiving cavity. Both the first receiving cavity and the second receiving cavity are provided with filter components for purifying air.

[0010] A limiting plate is detachably connected to the air inlet box and rotatably connected to both the first filter assembly and the second filter assembly, for limiting the position of the first filter assembly and the second filter assembly;

[0011] A control component is connected to both the first filter component and the second filter component, and the air inlet box is provided with a control cavity for accommodating the control component.

[0012] A solar panel is fixed to the surface of the air inlet box near the air inlet and is electrically connected to the control component.

[0013] Furthermore, the first filtering component includes:

[0014] A rotating cylinder is rotatably connected to the air inlet box. The rotating cylinder has a cylindrical structure, and the first receiving cavity is disposed on the rotating cylinder.

[0015] A receiving box is detachably installed in the first receiving cavity. The receiving box is provided with a receiving groove and a vent that communicates with both the first receiving cavity and the receiving groove.

[0016] The driven wheel is fixedly connected to the rotating cylinder and to the control component, and the rotating cylinder passes through the driven wheel.

[0017] Furthermore, the control component includes:

[0018] The driving wheel meshes with the driven wheel;

[0019] A rotary actuator is fixed to the air inlet box and fixedly connected to the drive wheel, used to drive the drive wheel to rotate. The drive wheel and the rotary actuator are each corresponding to the driven wheel.

[0020] An energy storage device is disposed within the control cavity and electrically connected to the solar panel;

[0021] The controller is located within the control cavity and is electrically connected to both the energy storage device and the rotary actuator.

[0022] Furthermore, the second filter assembly has the same structure as the first filter assembly, but the outer diameter of the rotating cylinder in the second filter assembly is smaller than the inner diameter of the rotating cylinder in the first filter assembly.

[0023] Furthermore, the outer surface of the rotating cylinder is provided with a first air vent communicating with the first receiving cavity, and the inner surface of the rotating cylinder is provided with a second air vent communicating with the first receiving cavity; the first air vent and the second air vent each correspond one-to-one with the first receiving cavity; the rotating cylinder between adjacent first air vents and second air vents is provided with a plurality of rolling grooves and a plurality of sealing grooves; the rolling grooves are provided with rolling balls, and the sealing grooves are provided with elastic sealing rings.

[0024] Furthermore, the air intake mechanism also includes a sealing assembly, which includes:

[0025] A sealing bracket is fixed inside the air inlet;

[0026] The blocking actuator has one end fixed to the blocking bracket and electrically connected to the controller;

[0027] A blocking plate is fixedly connected to the other end of the blocking actuator, and the cross-sectional area of ​​the blocking plate is larger than the cross-sectional area of ​​the first air outlet on the first filter assembly.

[0028] A blocking sensor is fixed on the side of the blocking plate away from the first filter component and electrically connected to the blocking driver, used to monitor the air quality in the air inlet.

[0029] Furthermore, the filter components are spaced apart within a plurality of the second containment cavities; the filter components within the first containment cavity include a catalytic oxidant, a moisture-absorbing pad, and an ultraviolet emitter, wherein the catalytic oxidant and the moisture-absorbing pad are detachably placed within the containment groove of the first filter component, and the ultraviolet emitter is mounted on the rotating cylinder of the first filter component for emitting ultraviolet light covering the first containment cavity; the filter components within the second containment cavities include an adsorbent and a plasma emitter, wherein the adsorbent is placed within the containment groove of the second filter component, and the plasma emitter is mounted on the rotating cylinder of the second filter component for emitting plasma covering the second containment cavity.

[0030] Furthermore, the air outlet is equipped with a suction fan electrically connected to the controller, which is used to draw air in from the air inlet and discharge it from the air outlet.

[0031] Furthermore, the air inlet box is provided with a mounting position communicating with the air inlet, the mounting position being located on the side of the air inlet away from the first filter component; a filter screen is detachably connected inside the mounting position.

[0032] Furthermore, the cross-sectional area of ​​the air inlet on the side furthest from the first filter component is larger than the cross-sectional area on the other side.

[0033] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0034] This invention discloses an energy-saving building fresh air circulation system, addressing the problems of existing technologies where conventional purification systems fail to meet purification requirements in harsh environments, and multi-layer filtration systems are costly and prone to contamination of all filter components in favorable conditions, resulting in significant waste. This system utilizes solar panels to save energy; multiple first and second cavities extend its lifespan; when air handling capacity deteriorates, the first and second filter components rotate to adjust their positions relative to the air inlet and outlet, replacing the uncontaminated filter components in each cavity to continue operation; and the coordinated arrangement of spaced filter components within the first and second cavities allows for selection of appropriate filters based on air quality, effectively ensuring purification while minimizing resource waste and achieving energy conservation and environmental protection. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] Figure 1 This is a three-dimensional structural diagram of an energy-saving building fresh air circulation system according to the present invention;

[0037] Figure 2 This is a top view schematic diagram of an energy-saving building fresh air circulation system according to the present invention;

[0038] Figure 3 For along Figure 2 Cross-sectional view of line AA in the middle;

[0039] Figure 4 for Figure 3 Enlarged structural diagram at point C;

[0040] Figure 5 For along Figure 2 Cross-sectional view of the middle BB line;

[0041] Figure 6 for Figure 5 Enlarged structural diagram at point D.

[0042] Explanation of reference numerals in the attached drawings: 1. Air inlet box; 2. First filter assembly; 3. Second filter assembly; 4. Control assembly; 5. Solar panel; 6. Sealing assembly; 7. Filter mesh; 8. Limiting plate; 11. Air inlet; 12. Air outlet; 13. Control cavity; 21. Rotating cylinder; 22. Receiving box; 23. Driven wheel; 31. Second receiving cavity; 41. Driving wheel; 42. Rotary actuator; 43. Energy storage device; 44. Controller; 45. Fan; 61. Sealing bracket; 62. Sealing actuator; 63. Sealing plate; 64. Sealing sensor; 211. First receiving cavity; 212. First air outlet; 213. Second air outlet; 214. Ball bearing; 215. Elastic sealing ring. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 invention 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 invention.

[0045] Please refer to the following: Figures 1 to 6This invention provides a specific embodiment of an energy-saving building fresh air circulation system. The steel plate welding beveling device includes an exhaust mechanism and an intake mechanism. The intake mechanism includes an intake box 1, a first filter assembly 2, a second filter assembly 3, a limiting plate 8, a control assembly 4, and a solar panel 5. The intake box 1 is fixed to the building wall and has an air inlet 11 and an air outlet 12. The first filter assembly 2 is rotatably connected to the intake box 1 and has a first receiving cavity 211 communicating with the air inlet 11. Several first receiving cavities 211 are equidistantly spaced along the circumference of the first filter assembly 2. The second filter assembly 3 is rotatably connected to both the intake box 1 and the first filter assembly 2 and is coaxially arranged with the first filter assembly 2. The second filter assembly 3 penetrates the first filter assembly 2. The filter assembly 3 is provided with a second receiving cavity 31 that communicates with both the first receiving cavity 211 and the air outlet 12. The second receiving cavity 31 corresponds one-to-one with the first receiving cavity 211. Both the first receiving cavity 211 and the second receiving cavity 31 are provided with filter assemblies for purifying air. The limiting plate 8 is detachably connected to the air inlet box 1 and is rotatably connected to the first filter assembly 2 and the second filter assembly 3, and is used to limit the first filter assembly 2 and the second filter assembly 3. The control assembly 4 is connected to both the first filter assembly 2 and the second filter assembly 3. The air inlet box 1 is provided with a control cavity 13 for accommodating the control assembly 4. The solar panel 5 is fixed on the surface of the air inlet box 1 near the air inlet 11 and is electrically connected to the control assembly 4.

[0046] In this embodiment, one end of the rotating cylinder 21 on the first filter assembly 2 or the second filter assembly 3 abuts against and is rotatably connected to the air inlet box 1, and the other end abuts against and is rotatably connected to the limiting plate 8. The air inlet 11 is arranged vertically, and the air outlet 12 has an L-shaped structure, including a horizontal air outlet section and a vertical air outlet section. The first receiving cavity 211 is provided with four, six, or eight equidistant spaces along the circumference of the first filter assembly 2.

[0047] For ease of explanation, please refer to Figure 1 A rectangular coordinate system is established with any point in space as the origin, the setting direction of the solar panel 5 relative to the air inlet box 1 as the Z-axis, the setting direction of the sealing plate 63 relative to the air inlet box 1 as the X-axis, and the straight line direction that is perpendicular to both the X-axis and the Z-axis as the Y-axis. The XY plane is a horizontal plane, the direction indicated on the horizontal plane is the horizontal direction, and the direction indicated by the Z-axis is the vertical direction.

[0048] In this embodiment, the exhaust system includes an exhaust box, an exhaust fan, a filter, and a one-way valve. The exhaust box is fixed to the wall of the building and has an exhaust hole. The exhaust fan is fixed inside the exhaust hole to exhaust air from the building. The filter is fixed to the side of the exhaust fan closest to the interior of the building. The one-way valve is fixed to the other side of the exhaust fan. When the exhaust fan is working, the air pressure opens the one-way valve, and air is discharged from the one-way valve. At this time, the air entering through the one-way valve is filtered by the filter or is processed by the filter. When the exhaust fan stops, the one-way valve closes, and the filter can absorb stale air from the room. The exhaust box, exhaust fan, filter, and one-way valve are all prior art and will not be described in detail here.

[0049] Compared with existing technologies, this energy-saving building fresh air circulation system utilizes solar energy resources through the installation of solar panels 5, achieving energy conservation. The multiple first receiving chambers 211 and second receiving chambers 31 extend the system's lifespan. When a decrease in air handling capacity is detected, the first filter assembly 2 and the second filter assembly 3 are rotated to adjust the positions of the first receiving chambers 211 and 31 connected to the air inlet 11 and air outlet 12, replacing the uncontaminated filter assemblies in the first receiving chambers 211 and 31 to continue operation. The coordinated arrangement of the spaced filter assemblies within the first filter assembly 2 and the second filter assembly 3 allows for selection of suitable filter assemblies based on air quality, effectively ensuring purification while reducing resource waste and achieving energy conservation and environmental protection. This system solves the problems of existing technologies where ordinary purification systems cannot meet the required purification effects in harsh environments; multi-layer filtration purification systems are costly, and in excellent environments, air passing through can cause contamination of all filter assemblies, resulting in significant waste.

[0050] As another embodiment of the present invention, the structure of this energy-saving building fresh air circulation system is basically the same as that in the above embodiment, except that the first filter component 2 includes a rotating cylinder 21, a receiving box 22, and a driven wheel 23. The rotating cylinder 21 is rotatably connected to the air inlet box 1 and has a cylindrical structure. The first receiving cavity 211 is disposed on the rotating cylinder 21. The receiving box 22 is detachably installed in the first receiving cavity 211 and has a receiving groove and a vent hole that communicates with both the first receiving cavity 211 and the receiving groove. The driven wheel 23 is fixedly connected to the rotating cylinder 21 and connected to the control component 4. The rotating cylinder 21 passes through the driven wheel 23.

[0051] As another embodiment of the present invention, the structure of this energy-saving building fresh air circulation system is basically the same as that in the above embodiment, except that the control component 4 includes a drive wheel 41, a rotary driver 42, an energy storage device 43, and a controller 44. The drive wheel 41 meshes with the driven wheel 23. The rotary driver 42 is fixed on the air inlet box 1 and fixedly connected to the drive wheel 41, and is used to drive the drive wheel 41 to rotate. The drive wheel 41 and the rotary driver 42 correspond one-to-one with the driven wheel 23. The energy storage device 43 is disposed in the control cavity 13 and is electrically connected to the solar panel 5. The controller 44 is disposed in the control cavity 13 and is electrically connected to both the energy storage device 43 and the rotary driver 42, and is used to receive and process the data generated by the entire system and control the working state of each structure.

[0052] In this embodiment, the rotary actuator 42 can be a motor, the driving wheel 41 and the driven wheel 23 can be meshing gears, and the energy storage device 43 is a battery. An air detection sensor electrically connected to the controller 44 is installed inside the air outlet 12. When the air detection sensor detects that the air quality inside the air outlet 12 has dropped to a certain threshold, it controls the rotary actuator 42 to rotate via the controller 44. The rotary actuator 42 drives the rotating cylinder 21 to rotate a certain angle via the driving wheel 41 and the driven wheel 23, connecting the first receiving cavity 211 containing the new filter assembly to the air inlet 11. The controller 44 controls the activation of the electrical control structure in the corresponding filter assembly within the first receiving cavity 211 and de-energizes the electrical control structures in the remaining filter assemblies within the first receiving cavities 211.

[0053] In this embodiment, a first air vent 212 communicating with the first receiving cavity 211 is provided on the outer surface of the rotating cylinder 21, and a second air vent 213 communicating with the first receiving cavity 211 is provided on the inner surface of the rotating cylinder 21; the first air vent 212 and the second air vent 213 correspond one-to-one with the first receiving cavity 211; a plurality of rolling grooves and a plurality of sealing grooves are provided on the rotating cylinder 21 between adjacent first air vents 212 and second air vents 213; a ball bearing 214 is provided in the rolling groove, and an elastic sealing ring 215 is provided in the sealing groove.

[0054] As another embodiment of the present invention, the structure of this energy-saving building fresh air circulation system is basically the same as that in the above embodiments, except that an exhaust fan 45 electrically connected to the controller 44 is provided inside the air outlet 12. The exhaust fan 45 is used to draw air in from the air inlet 11 and discharge it from the air outlet 12. The air inlet box 1 is provided with a mounting position communicating with the air inlet 11. The mounting position is located on the side of the air inlet 11 away from the first filter component 2. A filter screen 7 is detachably connected inside the mounting position. The filter screen 7 is used to block larger particles and protect the structure inside the air inlet 11. The cross-sectional area of ​​the side of the air inlet 11 away from the first filter component 2 is larger than the cross-sectional area of ​​the other side, which plays a certain role in concentrating airflow.

[0055] In this embodiment, the second filter component 3 has the same structure as the first filter component 2, and the outer diameter of the rotating cylinder 21 in the second filter component 3 is smaller than the inner diameter of the rotating cylinder 21 in the first filter component 2.

[0056] As another embodiment of the present invention, the structure of this energy-saving building fresh air circulation system is basically the same as that in the above embodiments, except that the air intake mechanism further includes a blocking component 6. The blocking component 6 includes a blocking bracket 61, a blocking actuator 62, a blocking plate 63, and a blocking sensor 64. The blocking bracket 61 is fixed inside the air inlet 11. One end of the blocking actuator 62 is fixed to the blocking bracket 61 and electrically connected to the controller 44. The blocking plate 63 is fixedly connected to the other end of the blocking actuator 62, and the cross-sectional area of ​​the blocking plate 63 is larger than the cross-sectional area of ​​the first air outlet 212 on the first filter assembly 2. The blocking sensor 64 is fixed to the side of the blocking plate 63 away from the first filter assembly 2 and electrically connected to the blocking actuator 62, and is used to monitor the air quality inside the air inlet 11. The blocking actuator 62 can be an electric telescopic rod.

[0057] As another embodiment of the present invention, the structure of this energy-saving building fresh air circulation system is basically the same as that in the above embodiment, except that filter components are spaced apart in several second receiving cavities 31 and / or the first receiving cavity 211; the filter components in the first receiving cavity 211 include a catalytic oxidant, a moisture-absorbing pad and an ultraviolet emitter, the catalytic oxidant and the moisture-absorbing pad are detachably placed in the receiving groove in the first filter component 2, and the ultraviolet emitter is installed on the rotating cylinder 21 in the first filter component 2 for emitting ultraviolet rays covering the first receiving cavity 211; the filter components in the second receiving cavity 31 include an adsorbent and a plasma emitter, the adsorbent is placed in the receiving groove in the second filter component 3, and the plasma emitter is installed on the rotating cylinder 21 in the second filter component 3 for emitting plasma covering the second receiving cavity 31.

[0058] In this embodiment, the catalytic oxidant is a composite inert catalyst, the ultraviolet emitter emits C-band ultraviolet light, the adsorbent can be metal oxides such as cobalt tetroxide, nickel oxide, and manganese oxide, or molecular sieves, and the plasma emitter emits non-thermal plasma. The combination of the catalytic oxidant and the ultraviolet emitter improves air purification quality and efficiency. Furthermore, no difficult-to-treat substances are generated during or after the treatment, making it more environmentally friendly and allowing for repeated recycling. The adsorbent and plasma emitter can operate alternately. When the plasma emitter stops, the adsorbent continues to adsorb harmful substances in the air; when the plasma emitter operates, the adsorbent acts as a catalyst, accelerating the decomposition of harmful substances and further improving air purification efficiency. This alternating operation extends the adsorbent's lifespan and effectively saves costs. The first filter assembly 2 and the second filter assembly 3 work together to provide different levels of purification based on air quality, ensuring the quality of air entering the building. The filter in the exhaust system uses the structure of the filter assembly within the second receiving cavity 31 for air filtration.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0060] The embodiments described above are merely preferred embodiments of the invention and are not intended to limit the scope of the invention. Without departing from the spirit of the invention, all modifications and improvements made by those skilled in the art to the technical solutions of the invention should fall within the protection scope defined by the claims.

Claims

1. An energy-saving building fresh air circulation system, comprising an exhaust mechanism and an intake mechanism, characterized in that, The air intake mechanism includes: An air inlet box (1) is fixed to the building wall, and the air inlet box (1) is provided with an air inlet (11) and an air outlet (12); The first filter assembly (2) is rotatably connected to the air inlet box (1) and has a first receiving cavity (211) communicating with the air inlet (11). The first receiving cavity (211) is provided with a plurality of equal-spaced circumferentially spaced cavities along the first filter assembly (2). The second filter assembly (3) is rotatably connected to the air inlet box (1) and the first filter assembly (2) and is coaxially arranged with the first filter assembly (2). The second filter assembly (3) passes through the first filter assembly (2). The second filter assembly (3) is provided with a second receiving cavity (31) that communicates with the first receiving cavity (211) and the air outlet (12). The second receiving cavity (31) corresponds one-to-one with the first receiving cavity (211). Both the first receiving cavity (211) and the second receiving cavity (31) are provided with filter assemblies for purifying air. The limiting plate (8) is detachably connected to the air inlet box (1) and rotatably connected to the first filter assembly (2) and the second filter assembly (3) at the same time, and is used to limit the first filter assembly (2) and the second filter assembly (3); The control component (4) is connected to both the first filter component (2) and the second filter component (3), and the air inlet box (1) is provided with a control cavity (13) for accommodating the control component (4); The solar panel (5) is fixed to the surface of the air inlet box (1) near the air inlet (11) and is electrically connected to the control component (4).

2. The energy-saving building fresh air circulation system according to claim 1, characterized in that, The first filtering component (2) includes: A rotating cylinder (21) is rotatably connected to the air inlet box (1). The rotating cylinder (21) has a cylindrical structure, and the first receiving cavity (211) is disposed on the rotating cylinder (21). The receiving box (22) is detachably installed in the first receiving cavity (211). The receiving box (22) is provided with a receiving groove and a vent hole that communicates with the first receiving cavity (211) and the receiving groove. The driven wheel (23) is fixedly connected to the rotating cylinder (21) and connected to the control component (4), and the rotating cylinder (21) is disposed through the driven wheel (23).

3. The energy-saving building fresh air circulation system according to claim 2, characterized in that, The control component (4) includes: The driving wheel (41) meshes with the driven wheel (23); A rotary driver (42) is fixed on the air inlet box (1) and fixedly connected to the drive wheel (41) for driving the drive wheel (41) to rotate. The drive wheel (41) and the rotary driver (42) are respectively corresponding to the driven wheel (23). An energy storage device (43) is disposed in the control cavity (13) and electrically connected to the solar panel (5); The controller (44) is located in the control cavity (13) and is electrically connected to both the energy storage device (43) and the rotary driver (42).

4. The energy-saving building fresh air circulation system according to claim 3, characterized in that, The second filter assembly (3) has the same structure as the first filter assembly (2), and the outer diameter of the rotating cylinder (21) in the second filter assembly (3) is smaller than the inner diameter of the rotating cylinder (21) in the first filter assembly (2).

5. The energy-saving building fresh air circulation system according to claim 4, characterized in that, The outer surface of the rotating cylinder (21) is provided with a first air vent (212) communicating with the first receiving cavity (211), and the inner surface of the rotating cylinder (21) is provided with a second air vent (213) communicating with the first receiving cavity (211); the first air vent (212) and the second air vent (213) are each corresponding to the first receiving cavity (211); a plurality of rolling grooves and a plurality of sealing grooves are provided on the rotating cylinder (21) between adjacent first air vents (212) and second air vents (213); a ball bearing (214) is provided in the rolling groove, and an elastic sealing ring (215) is provided in the sealing groove.

6. The energy-saving building fresh air circulation system according to claim 5, characterized in that, The air intake mechanism further includes a sealing component (6), which includes: A blocking bracket (61) is fixed inside the air inlet (11); The blocking driver (62) is fixed at one end to the blocking bracket (61) and electrically connected to the controller (44); The sealing plate (63) is fixedly connected to the other end of the sealing driver (62), and the cross-sectional area of ​​the sealing plate (63) is larger than the cross-sectional area of ​​the first air outlet (212) on the first filter assembly (2); A blocking sensor (64) is fixed on the side of the blocking plate (63) away from the first filter assembly (2) and electrically connected to the blocking driver (62) for monitoring the air quality inside the air inlet (11).

7. The energy-saving building fresh air circulation system according to claim 5, characterized in that, The filter assembly is spaced apart in several second receiving cavities (31); the filter assembly in the first receiving cavity (211) includes a catalytic oxidant, a moisture-absorbing pad and an ultraviolet emitter, the catalytic oxidant and the moisture-absorbing pad are detachably placed in the receiving groove in the first filter assembly (2), and the ultraviolet emitter is installed on the rotating cylinder (21) in the first filter assembly (2) for emitting ultraviolet light covering the first receiving cavity (211); the filter assembly in the second receiving cavity (31) includes an adsorbent and a plasma emitter, the adsorbent is placed in the receiving groove in the second filter assembly (3), and the plasma emitter is installed on the rotating cylinder (21) in the second filter assembly (3) for emitting plasma covering the second receiving cavity (31).

8. The energy-saving building fresh air circulation system according to claim 5, characterized in that, The air outlet (12) is equipped with a suction fan (45) electrically connected to the controller (44). The suction fan (45) is used to draw air in from the air inlet (11) and discharge it from the air outlet (12).

9. An energy-saving building fresh air circulation system according to claim 5, characterized in that, The air inlet box (1) is provided with an installation position that communicates with the air inlet (11). The installation position is located on the side of the air inlet (11) away from the first filter assembly (2). A filter screen (7) is detachably connected to the installation position.

10. An energy-saving building fresh air circulation system according to claim 5, characterized in that, The cross-sectional area of ​​the air inlet (11) on the side away from the first filter component (2) is larger than the cross-sectional area on the other side.

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