Energy-saving ventilation device for building

Abstract

The application provides a building energy-saving ventilation device, and relates to the technical field of energy-saving ventilation.The building energy-saving ventilation device comprises an air outlet tank, a control tank and a battery module, the battery module is arranged on one side wall of the air outlet tank, the control tank is arranged on the upper center of the front end face of the battery module, the other side wall of the air outlet tank is provided with an air inlet tank, the front end face center of the air inlet tank and the air outlet tank is respectively provided with an air outlet and an air inlet, the front part of the air outlet and the air inlet is respectively provided with a grid, the center of one side wall of the air inlet tank is provided with a recess at the rear part, the recess is internally provided with a filtering structure, the upper end face of the air outlet tank is provided with an air outlet pipe, and the upper end face of the air outlet pipe is fixedly connected with a non-powered air cap.The heat exchange between the air inlet structure and the discharged gas reduces temperature fluctuation and power loss, the filtering structure removes odor and filters the entering air, reduces the discomfort of people in the building, and the auxiliary structure facilitates the improvement of the air exchange efficiency.

Description

Technical Field

[0001] This invention relates to the field of energy-saving ventilation technology, specifically to an energy-saving ventilation device for buildings. Background Technology

[0002] Architecture is the art and science of designing, building, and maintaining buildings and structures. It involves not only the creation of physical space but also comprehensive consideration of function, aesthetics, culture, technology, and environment. The field of architecture is broad, encompassing a wide range of projects from residential and commercial buildings to public facilities and infrastructure. Ventilation is an important measure to ensure indoor air quality, protect residents' health, improve living comfort, and achieve energy conservation and emission reduction. Building ventilation is divided into natural ventilation and mechanical ventilation, thereby maintaining the indoor air environment in accordance with hygiene standards.

[0003] There are still some problems in the use of existing building energy-saving ventilation devices. When used in summer or winter, due to the large temperature difference between indoors and outdoors, the indoor temperature fluctuates after air exchange. It is necessary to replenish the heat of the incoming air to reduce this temperature fluctuation, resulting in resource waste. In addition, natural exhaust efficiency is slow during use, and using fans to speed up efficiency also consumes energy. Therefore, those skilled in the art provide a building energy-saving ventilation device to solve the problems mentioned in the background art. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a building energy-saving ventilation device that solves the problems of temperature fluctuations caused by large temperature differences between indoors and outdoors during summer or winter use, requiring the replenishment of heat to the incoming air to reduce these temperature fluctuations and thus avoiding resource waste. Furthermore, natural exhaust is slow during use, and using a fan to increase efficiency also consumes energy.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a building energy-saving ventilation device, comprising an air outlet box, a control box, and a battery module. The battery module is disposed on one side wall of the air outlet box, and the control box is disposed at the upper center of the front face of the battery module. An air inlet box is disposed on the other side wall of the air outlet box. An air outlet and an air inlet are respectively disposed at the center of the front face of the air inlet box and the air outlet box. A grille is disposed at the front of the air outlet and the air inlet. A groove is disposed at the rear center of one side wall of the air inlet box, and a filter structure is disposed inside the groove. An air outlet pipe is disposed on the upper surface of the air outlet box, and a non-powered wind cap is fixedly connected to the upper surface of the air outlet pipe. An air inlet structure is disposed on the upper surface of the air inlet box. A base plate is disposed at the upper side of one side wall of the air outlet pipe, and an auxiliary structure is disposed at the upper end of the base plate.

[0008] The air intake structure includes a first connecting pipe, a second connecting pipe, a rain cover, and a heat exchange pipe. The first connecting pipe is fixedly connected to the center of the upper end face of the air intake box. The first connecting pipe passes through the lower part of one side wall of the air outlet pipe and leads to the interior of the air outlet pipe. The heat exchange pipe is located at the output end of the first connecting pipe inside the air outlet pipe. The second connecting pipe is located at the output end of the heat exchange pipe. One end of the second connecting pipe passes through the upper part of one inner side wall of the air outlet pipe and leads to the upper part of one side of the air outlet pipe. The rain cover is located at the input end of the second connecting pipe. The heat exchange pipe is spirally arranged upwards inside the air outlet pipe. The incoming air enters the heat exchange pipe through the second connecting pipe. Heat exchange occurs between the air inside the air outlet pipe and the incoming air, thereby reducing the temperature difference between the incoming air and the air inside the building. This eliminates the need for additional heating of the incoming air, thus saving energy.

[0009] Preferably, the filter structure includes a push plate disposed inside the groove on one side. A frame is fixedly connected to the center of one side wall of the push plate. One end of the frame passes through the inner side wall of the groove and extends into the air intake box. A bamboo charcoal filter screen is disposed inside the frame. A sealing gasket is fitted onto the outer side wall of the frame near the push plate. Limiting blocks are provided on one side wall of the air intake box at both ends of the push plate. The side walls of the two limiting blocks are respectively attached to one side wall of the push plate. A handle is fixedly connected to the center of one side wall of the push plate. After the air passes through the bamboo charcoal filter, it absorbs particulate matter and odors from the incoming air before entering the building, improving the comfort of the people inside. Then, by rotating the two limiting blocks, the restriction on the push plate is released, and the frame can be pulled out by the handle for easy cleaning and replacement of the bamboo charcoal filter. After cleaning and replacement, it is inserted back into the air intake box, and the two limiting blocks are rotated to fit against one side wall of the push plate for restriction. The sealing gasket fills the gap between the push plate and the air intake box, so that the incoming air can only be discharged from the air outlet.

[0010] Preferably, the auxiliary structure includes two first bearings, arranged vertically inside the upper part of the air outlet pipe. Each of the two first bearings has four first support rods arranged in a rectangular pattern on its outer ring. These eight first support rods are respectively fixedly connected to the inner wall of the air outlet pipe. A first shaft is fixedly connected to the inner side of the inner ring of each of the two first bearings. A first fan blade is provided at the end of the first shaft located at the lower end of the first bearing. A first umbrella wheel is fixedly sleeved on the outer wall of the first shaft between the two first bearings. A connecting rod is provided at the upper end of the base plate, with one end of the connecting rod penetrating the air outlet pipe. One side wall extends into the air outlet pipe, and a second umbrella wheel is fixedly connected to its end. The first umbrella wheel and the second umbrella wheel mesh with each other. The other end of the connecting rod passes through the side wall of the second connecting pipe and extends into the second connecting pipe, and a fourth umbrella wheel is fixedly connected to its end. When the external wind drives the non-powered wind cap to rotate and airflow is generated by the temperature difference between the inside and outside, the air inside the building is drawn into the air outlet pipe through the air inlet and then discharged through the non-powered wind cap. When the airflow passes through the first fan blade, it drives the first fan blade to rotate, thereby driving the first umbrella wheel to rotate. The first umbrella wheel drives the second umbrella wheel to rotate, thereby driving the connecting rod to rotate.

[0011] Preferably, two second bearings are arranged vertically at the upper part of the second connecting pipe. Four second support rods are arranged in a rectangular pattern on the outer walls of the two second bearings. The four second support rods are fixedly connected to the inner wall of the second connecting pipe. A second shaft is fixedly connected to the inner ring of the two second bearings. A second fan blade is fixedly connected to the lower end of the second shaft at the lower part of the second bearing. A third parachute wheel is fixedly connected to the outer wall of the second shaft between the two second bearings. The third parachute wheel is driven to rotate by the fourth parachute wheel, which in turn drives the second shaft to rotate. The rotation is supported by the two second bearings, which in turn drives the second fan blade to rotate, thereby accelerating the intake efficiency.

[0012] Preferably, a hollow motor is provided on the outer wall of the connecting rod. The hollow rod inside the hollow motor is fixedly sleeved on the outer wall of the connecting rod. The hollow motor drives the connecting rod to rotate, thereby driving the second and fourth parasol wheels to rotate, which in turn drives the first and third parasol wheels to rotate, thereby driving the second and first fan blades to rotate, thus accelerating the ventilation efficiency. When not in use, the first fan blade drives the first parasol wheel to rotate. When the first parasol wheel drives the second parasol wheel and the connecting rod to rotate, the hollow motor generates a small amount of electrical energy. A rectifier and voltage regulator is integrated inside the control box. The generated electrical energy is rectified and regulated by the rectifier and voltage regulator before being sent to the battery module for storage. This facilitates the generation of electrical energy using naturally rising airflow, thereby saving energy.

[0013] (III) Beneficial Effects

[0014] This invention provides an energy-saving ventilation device for buildings. It has the following beneficial effects:

[0015] 1. In this invention, the heat exchange tube is spirally arranged inside the outlet pipe. The incoming air enters the heat exchange tube through the second connecting pipe. The temperature difference between the inside of the outlet pipe and the incoming air is used for heat exchange, thereby reducing the temperature difference between the incoming air and the air inside the building. Therefore, there is no need to heat the incoming air, thus achieving the purpose of saving electricity.

[0016] 2. In this invention, when the external wind drives the non-powered wind cap to rotate and the airflow is generated by the temperature difference between the inside and outside, the air inside the building is drawn into the air pipe through the air inlet and then discharged through the non-powered wind cap. When the airflow passes through the first fan blade, it drives the first fan blade to rotate, thereby driving the first umbrella wheel to rotate. The first umbrella wheel drives the second umbrella wheel to rotate, thereby driving the connecting rod to rotate. The connecting rod drives the fourth umbrella wheel to rotate, and the fourth umbrella wheel drives the third umbrella wheel to rotate, thereby driving the second shaft to rotate. The rotation is supported by two second bearings, which drive the second fan blade to rotate, thereby accelerating the air intake efficiency.

[0017] 3. In this invention, a hollow motor drives a connecting rod to rotate, which in turn drives the second and fourth parasol wheels to rotate, and then drives the first and third parasol wheels to rotate, thereby driving the second and first fan blades to rotate, thus accelerating the ventilation efficiency. When not in use, the first fan blade drives the first parasol wheel to rotate, and the first parasol wheel drives the second parasol wheel and the connecting rod to rotate. The hollow motor generates a small amount of electrical energy, which is rectified and regulated by a rectifier and voltage regulator integrated inside the control box before being sent to the battery module for storage. This allows for the generation of electrical energy using naturally rising airflow, thereby saving energy.

[0018] 4. In this invention, the incoming air is filtered through a bamboo and wood charcoal filter, which adsorbs particulate matter and odors before entering the building, thus improving the comfort of the people inside. The two limiting blocks are then rotated to release the restriction on the push plate, and the frame can be pulled out through the handle for easy cleaning and replacement of the bamboo and wood charcoal filter. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a three-dimensional sectional view of the present invention;

[0021] Figure 3 This is a front sectional view of the present invention;

[0022] Figure 4 This is a perspective view of the auxiliary structure of the present invention;

[0023] Figure 5 This is a front sectional view of the auxiliary structure of the present invention;

[0024] Figure 6 for Figure 3 Enlarged diagram of point A in the middle.

[0025] Among them, 1. Air outlet box; 2. Air inlet; 3. Air outlet; 4. Grille; 5. Filter structure; 501. Push plate; 502. Handle; 503. Limiting block; 504. Frame; 505. Bamboo and wood charcoal filter screen; 506. Sealing gasket; 6. Air inlet box; 7. Air inlet structure; 701. First connecting pipe; 702. Second connecting pipe; 703. Rain cover; 704. Heat exchange pipe; 8. Control box; 9. Battery module; 10. Auxiliary structure; 1001. First support 1002. Rod; 1003. First bearing; 1004. First shaft; 1005. First fan blade; 1006. First parasol wheel; 1007. Second parasol wheel; 1008. Connecting rod; 1009. Hollow motor; 1010. Second support rod; 1011. Second bearing; 1012. Second shaft; 1013. Second fan blade; 1014. Third parasol wheel; 1015. Fourth parasol wheel; 11. Non-powered wind cap; 12. Base plate; 13. Air outlet pipe; 14. Groove. Detailed Implementation

[0026] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1:

[0028] like Figure 1-6 As shown, this embodiment of the invention provides a building energy-saving ventilation device, including an air outlet box 1, a control box 8, and a battery module 9. The battery module 9 is disposed on one side wall of the air outlet box 1, and the control box 8 is disposed at the upper center of the front face of the battery module 9 for centralized control. An air inlet box 6 is disposed on the other side wall of the air outlet box 1. An air outlet 3 and an air inlet 2 are respectively disposed at the center of the front face of the air inlet box 6 and the air outlet box 1. A grille 4 is disposed at the front of the air outlet 3 and the air inlet 2. A groove 14 is disposed at the rear center of one side wall of the air inlet box 6. The groove 14 is equipped with a filter structure 5, which deodorizes and filters the incoming air to reduce discomfort for people inside the building. The upper end of the air outlet box 1 is equipped with an air outlet pipe 13, and a non-powered vent cap 11 is fixedly connected to the upper end of the air outlet pipe 13. The non-powered vent cap 11 is used to extract air from the building. The upper end of the air inlet box 6 is equipped with an air inlet structure 7, which exchanges heat with the exhaust gas to reduce temperature fluctuations and power loss. A bottom plate 12 is provided on the upper side wall of the air outlet pipe 13, and an auxiliary structure 10 is provided on the upper end of the bottom plate 12.

[0029] The intake structure 7 includes a first connecting pipe 701, a second connecting pipe 702, a rain cover 703, and a heat exchange pipe 704. The first connecting pipe 701 is fixedly connected to the center of the upper end face of the intake box 6. The first connecting pipe 701 passes through the lower part of one side wall of the exhaust pipe 13 and extends into the interior of the exhaust pipe 13. The heat exchange pipe 704 is located at the output end of the first connecting pipe 701 inside the exhaust pipe 13. The second connecting pipe 702 is located at the output end of the heat exchange pipe 704, with one end of the second connecting pipe 702 passing through the upper part of one inner side wall of the exhaust pipe 13. The rain cover 703 is installed at the upper part of the outlet pipe 13 on the input end of the second connecting pipe 702. The heat exchange pipe 704 is spirally arranged inside the outlet pipe 13. The incoming air enters the heat exchange pipe 704 through the second connecting pipe 702. The temperature difference between the inside of the outlet pipe 13 and the incoming air is used for heat exchange, thereby reducing the temperature difference between the incoming air and the air in the building. Therefore, there is no need to heat the incoming air, thus achieving the purpose of saving electricity.

[0030] The filter structure 5 includes a push plate 501, which is located inside the groove 14 on one side. A frame 504 is fixedly connected to the center of one side wall of the push plate 501. One end of the frame 504 passes through the inner side wall of the groove 14 and leads to the inside of the air intake box 6. A bamboo charcoal filter screen 505 is installed inside the frame 504. A sealing gasket 506 is fitted on the outer side wall of the frame 504 near the push plate 501. Limiting blocks 503 are provided on one side wall of the air intake box 6 at both ends of the push plate 501. The side walls of the two limiting blocks 503 are respectively attached to one side wall of the push plate 501. A handle 502 is fixedly connected to the center of one side wall of the push plate 501. After the air passes through the bamboo charcoal filter 505, it adsorbs particulate matter and odors from the incoming air before entering the building, improving the comfort of the people inside. Then, by rotating the two limiting blocks 503, the restriction on the push plate 501 is released, and the frame 504 is pulled out by the handle 502, which facilitates the cleaning and replacement of the bamboo charcoal filter 505. After cleaning and replacement, it is inserted into the air intake box 6, and the two limiting blocks 503 are rotated to fit against one side wall of the push plate 501 for restriction. The sealing gasket 506 fills the gap between the push plate 501 and the air intake box 6, so that the incoming air can only be discharged from the air outlet 3.

[0031] The auxiliary structure 10 includes two first bearings 1002, which are arranged vertically inside the upper part of the air outlet pipe 13. Each of the two first bearings 1002 has four first support rods 1001 arranged in a rectangular pattern on its outer ring. These eight first support rods 1001 are fixedly connected to the inner wall of the air outlet pipe 13. A first shaft 1003 is fixedly connected to the inner side of the inner ring of each of the two first bearings 1002. A first fan blade 1004 is located at the lower end of the first shaft 1003 near the lower part of the first bearing 1002. A first umbrella wheel 1005 is fixedly sleeved on the outer wall of the first shaft 1003 between the two first bearings 1002. A connecting rod 1007 is located at the upper end of the base plate 12, with one end of the connecting rod 1007 penetrating through one side wall of the air outlet pipe 13. The air supply pipe 1007 extends into the air outlet 13 and is fixedly connected to the end of the second umbrella wheel 1006. The first umbrella wheel 1005 and the second umbrella wheel 1006 mesh with each other. The other end of the connecting rod 1007 passes through one side wall of the second connecting pipe 702 and extends into the second connecting pipe 702. The end of the connecting rod 1007 is fixedly connected to the fourth umbrella wheel 1014. When the wind from the outside drives the non-powered wind cap 11 to rotate and the airflow is generated by the temperature difference between the inside and outside, the air inside the building is drawn into the air outlet 13 through the air inlet 2 and then discharged through the non-powered wind cap 11. When the airflow passes through the first fan blade 1004, it drives the first fan blade 1004 to rotate, thereby driving the first umbrella wheel 1005 to rotate. The first umbrella wheel 1005 drives the second umbrella wheel 1006 to rotate, thereby driving the connecting rod 1007 to rotate.

[0032] Inside the second connecting pipe 702, two second bearings 1010 are arranged vertically at the upper part. Four second support rods 1009 are arranged in a rectangular pattern on the outer walls of the two second bearings 1010. The four second support rods 1009 are fixedly connected to the inner walls of the second connecting pipe 702. A second shaft 1011 is fixedly connected to the inner ring of the two second bearings 1010. A second fan blade 1012 is fixedly connected to the lower end of the second shaft 1011 of the second bearing 1010. A third parachute wheel 1013 is fixedly connected to the outer wall of the second shaft 1011 between the two second bearings 1010. The third parachute wheel 1013 is driven to rotate by the fourth parachute wheel 1014, which in turn drives the second shaft 1011 to rotate. The rotation is supported by the two second bearings 1010, which in turn drives the second fan blade 1012 to rotate, thereby accelerating the intake efficiency.

[0033] A hollow motor 1008 is installed on the outer wall of the connecting rod 1007. The hollow rod inside the hollow motor 1008 is fixedly sleeved on the outer wall of the connecting rod 1007. The hollow motor 1008 drives the connecting rod 1007 to rotate, thereby driving the second parachute wheel 1006 and the fourth parachute wheel 1014 to rotate, which in turn drives the first parachute wheel 1005 and the third parachute wheel 1013 to rotate, thereby driving the second fan blade 1012 and the first fan blade 1004 to rotate, thus accelerating the ventilation efficiency. When not in use, the first fan blade 1004 drives the first parachute wheel 1005 to rotate, and the first parachute wheel 1005 drives the second parachute wheel 1006 and the connecting rod 1007 to rotate. The hollow motor 1008 generates a small amount of electrical energy. A rectifier and voltage regulator is integrated inside the control box 8. The generated electrical energy is rectified and regulated by the rectifier and voltage regulator before being sent to the battery module 9 for storage. This facilitates the generation of electrical energy using naturally rising airflow, thereby saving energy.

[0034] Working principle: When the external wind drives the non-powered ventilator 11 to rotate and the airflow is generated by the temperature difference between the inside and outside, the air inside the building is drawn into the air outlet 13 through the air inlet 2, and then discharged through the non-powered ventilator 11. When the airflow passes through the first fan blade 1004, it drives the first fan blade 1004 to rotate, thereby driving the first umbrella wheel 1005 to rotate. The first umbrella wheel 1005 drives the second umbrella wheel 1006 to rotate, thereby driving the connecting rod 1007 to rotate. The connecting rod 1007 drives the fourth umbrella wheel 1014 to rotate, and the fourth umbrella wheel 1014 drives the third umbrella wheel 1006 to rotate. The parachute wheel 1013 rotates, thereby driving the second shaft 1011 to rotate. The rotation is supported by two second bearings 1010, which in turn drive the second fan blade 1012 to rotate, thereby accelerating the air intake efficiency. The air is spirally arranged inside the outlet pipe 13 through the heat exchange tube 704. The incoming air enters the heat exchange tube 704 through the second connecting pipe 702. The temperature difference between the inside of the outlet pipe 13 and the incoming air is used for heat exchange, thereby reducing the temperature difference between the incoming air and the air inside the building. Therefore, there is no need to heat the incoming air separately, thus achieving the purpose of saving electricity.

[0035] The hollow motor 1008 is started by controlling the control box 8. The hollow motor 1008 drives the connecting rod 1007 to rotate, which in turn drives the second parasol wheel 1006 and the fourth parasol wheel 1014 to rotate, which in turn drives the first parasol wheel 1005 and the third parasol wheel 1013 to rotate, which in turn drives the second fan blade 1012 and the first fan blade 1004 to rotate, thus accelerating the ventilation efficiency. When not in use, the first fan blade 1004 drives the first parasol wheel 1005 to rotate, and the first parasol wheel 1005 drives the second parasol wheel 1006 and the connecting rod 1007 to rotate. The hollow motor 1008 generates a small amount of electrical energy. The generated electrical energy is rectified and regulated by a rectifier and voltage regulator integrated inside the control box 8 before being sent to the battery module 9 for storage. This allows for the generation of electrical energy using naturally rising airflow, thereby saving energy.

[0036] After the incoming air is filtered through the bamboo charcoal filter 505, particulate matter and odors are adsorbed before entering the building, improving the comfort of the people inside. The two limiting blocks 503 are then rotated to release the restriction on the push plate 501. The frame 504 is then pulled out through the handle 502 to facilitate cleaning and replacement of the bamboo charcoal filter 505. After cleaning and replacement, the filter is inserted back into the air intake box 6. The two limiting blocks 503 are rotated to fit against one side wall of the push plate 501 for restriction. The sealing gasket 506 fills the gap between the push plate 501 and the air intake box 6, so that the incoming air can only be discharged from the air outlet 3.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A building energy-saving ventilation device, comprising an air outlet box (1), a control box (8), and a battery module (9), wherein the battery module (9) is disposed on one side wall of the air outlet box (1), and the control box (8) is disposed at the upper center of the front end face of the battery module (9), characterized in that: The air outlet box (1) has an air inlet box (6) on the other side wall. The air inlet box (6) and the air outlet box (1) have an air outlet (3) and an air inlet (2) at the center of their front faces, respectively. The air outlet (3) and the air inlet (2) are both equipped with a grille (4) at the front. The air inlet box (6) has a groove (14) at the rear center of one side wall. The groove (14) has a filter structure (5) inside. The air outlet box (1) has an air outlet pipe (13) on its upper surface. The air outlet pipe (13) has a non-powered wind cap (11) fixedly connected to its upper surface. The air inlet box (6) has an air intake structure (7) on its upper surface. The air outlet pipe (13) has a bottom plate (12) at the top of one side wall. The bottom plate (12) has an auxiliary structure (10) at its upper end. The air intake structure (7) includes a first connecting pipe (701), a second connecting pipe (702), a rain cover (703), and a heat exchange pipe (704). The first connecting pipe (701) is fixedly connected to the center of the upper end face of the air intake box (6). The first connecting pipe (701) passes through the lower part of one side wall of the air outlet pipe (13) and leads to the interior of the air outlet pipe (13). The heat exchange pipe (704) is located at the output end of the first connecting pipe (701) inside the air outlet pipe (13). The second connecting pipe (702) is located at the output end of the heat exchange pipe (704). One end of the second connecting pipe (702) passes through the upper part of one inner side wall of the air outlet pipe (13) and leads to the upper part of one side of the air outlet pipe (13). The rain cover (703) is located at the input end of the second connecting pipe (702). The heat exchange pipe (704) is arranged in a spiral upward configuration. The auxiliary structure (10) includes two first bearings (1002), which are arranged vertically inside the upper part of the air outlet pipe (13). The outer rings of the two first bearings (1002) are each arranged in a rectangular pattern with four first support rods (1001). These eight first support rods (1001) are fixedly connected to the inner wall of the air outlet pipe (13). A first shaft (1003) is fixedly connected to the inner side of the inner rings of the two first bearings (1002). A first fan blade (1004) is provided at the end of the first shaft (1003) at the lower end of the first bearing (1002). A first parasol wheel (1005) is fixedly sleeved on the outer wall of the first shaft (1003) between the first bearing (1002). A connecting rod (1007) is provided at the upper end of the base plate (12). One end of the connecting rod (1007) passes through the side wall of the air outlet pipe (13) and extends into the air outlet pipe (13), and the end is fixedly connected to a second parasol wheel (1006). The first parasol wheel (1005) and the second parasol wheel (1006) mesh with each other. The other end of the connecting rod (1007) passes through the side wall of the second connecting pipe (702) and extends into the second connecting pipe (702), and the end is fixedly connected to a fourth parasol wheel (1014). Inside the second connecting pipe (702), two second bearings (1010) are arranged vertically at the upper part. The outer walls of the two second bearings (1010) are each arranged in a rectangular shape with four second support rods (1009). The four second support rods (1009) are respectively fixedly connected to the inner wall of the second connecting pipe (702). The inner ring of the two second bearings (1010) is fixedly connected to a second shaft (1011). The lower end of the second shaft (1011) of the second bearing (1010) is fixedly connected to a second fan blade (1012). A third umbrella wheel (1013) is fixedly connected to the outer wall of the second shaft (1011) between the two second bearings (1010). The fourth parachute wheel (1014) drives the third parachute wheel (1013) to rotate, which in turn drives the second shaft (1011) to rotate. The rotation is supported by two second bearings (1010), which in turn drives the second fan blade (1012) to rotate, thereby accelerating the intake efficiency.

2. The building energy-saving ventilation device according to claim 1, characterized in that: The filter structure (5) includes a push plate (501), which is located inside the groove (14) on one side. A frame (504) is fixedly connected to the center of one side wall of the push plate (501). One end of the frame (504) passes through the inner side wall of the groove (14) and leads to the inside of the air inlet box (6). A bamboo charcoal filter (505) is provided inside the frame (504). A sealing gasket (506) is fitted on the outer side wall of the frame (504) near the push plate (501). Limiting blocks (503) are provided on one side wall of the air inlet box (6) at both ends of the push plate (501). The side walls of the two limiting blocks (503) are respectively attached to one side wall of the push plate (501). A handle (502) is fixedly connected to the center of one side wall of the push plate (501).

3. The building energy-saving ventilation device according to claim 1, characterized in that: A hollow motor (1008) is provided on the outer wall of the connecting rod (1007), and the hollow rod inside the hollow motor (1008) is fixedly sleeved on the outer wall of the connecting rod (1007).

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