A low-carbon and energy-saving ventilation device for buildings

Abstract

This invention relates to the field of building energy technology, and in particular to a low-carbon, energy-saving building ventilation device. Addressing the problems of poor energy efficiency and environmental friendliness, and the difficulty in cleaning dust from the air inlet in existing building ventilation devices, this invention proposes the following solution: It includes a ventilation pipe, a photovoltaic panel, a diversion pipe, an electric valve, and a cleaning mechanism. The photovoltaic panel is tilted and fixed to the upper side of the air outlet of the ventilation pipe and connected to a storage device. The indoor section of the ventilation pipe is equipped with an electric valve and a connected diversion pipe, with an air heating mechanism in the middle of the diversion pipe. The cleaning mechanism is installed inside the ventilation pipe to clean dust from the inside of the air inlet and the surface of the second filter. This invention utilizes photovoltaic power to heat the ventilation airflow, reducing air conditioning energy consumption and carbon emissions. The cleaning mechanism automatically cleans dust, ensuring ventilation efficiency. The photovoltaic panel also provides shielding and protection for the storage device and the air outlet, thus comprehensively improving the low-carbon, energy-saving, and practical performance of the building ventilation device.

Description

Technical Field

[0001] This invention relates to the field of building energy consumption technology, and in particular to a low-carbon and energy-saving ventilation device for buildings. Background Technology

[0002] Building ventilation systems are important auxiliary structures in modern buildings for achieving indoor-outdoor air exchange. They can draw fresh outdoor air into the room and replace harmful indoor gases, making the indoor air environment meet hygiene standards. They have been widely used in the field of building structures.

[0003] Existing building ventilation systems suffer from several technical drawbacks: First, they simply draw outdoor air into the room. Even those with heating functions often use AC-powered resistance wire heating, resulting in low energy efficiency and poor energy-saving and environmental performance. When there is a significant temperature difference between indoors and outdoors, directly introducing unconditioned outdoor air will greatly increase the energy consumption of indoor air conditioning, leading to energy waste and increased carbon emissions. Second, to ensure the cleanliness of the incoming air, ventilation systems install filters inside the ventilation pipes. However, to prevent the filters from getting wet from rain, they are usually placed at a certain distance from the air inlet. This creates a space directly connected to the outside environment at the air inlet, where dust easily accumulates on the filter surface. This accumulated dust is difficult to clean, and long-term use leads to a significant decrease in ventilation efficiency and increased maintenance costs. Therefore, this solution proposes a low-carbon, energy-saving building ventilation system. Summary of the Invention

[0004] The present invention proposes a low-carbon and energy-saving building ventilation device, which solves the problems of poor energy-saving and environmental protection performance and difficulty in cleaning dust at the air inlet in existing building ventilation devices.

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

[0006] A building low-carbon energy-saving ventilation device includes a ventilation pipe, a photovoltaic panel, a diversion pipe, an electric valve, and a cleaning mechanism;

[0007] The photovoltaic panel is fixed to the upper side of the air outlet end of the ventilation pipe, and the photovoltaic panel is electrically connected to the energy storage device. An electric valve is installed in the indoor section of the ventilation pipe. Both ends of the diversion pipe are connected to the ventilation pipe, and an air heating mechanism is installed in the middle of the diversion pipe.

[0008] A second filter screen is installed at the air inlet of the ventilation pipe, a first filter screen is installed at the air outlet, and a blower fan is installed near the air outlet of the ventilation pipe.

[0009] The cleaning mechanism is installed inside the air exchange pipe and is used to clean the dust inside the air inlet and the dust adhering to the surface of the second filter.

[0010] As a further improvement to the above solution, the photovoltaic panel is inclined, and the shading range of the photovoltaic panel covers the outlet of the energy storage device and the ventilation pipe. A square protective shell is installed at the end of the outlet. The energy storage device is covered with a waterproof protective shell. The energy storage device is connected to the photovoltaic panel by a mounting rod, and the bottom of the energy storage device is fixed to the outdoor protective shell of the ventilation pipe by bolts. The protective shell has a square structure, and its inner wall is adapted to the outer periphery of the outlet end of the ventilation pipe. The protective shell is fixed to the building wall by bolts.

[0011] Through the above technical solution, the tilted photovoltaic panel can fully receive solar energy, while also providing shading and protection for the energy storage device and the gas outlet, preventing rainwater and debris from entering and reducing the frequency of device maintenance.

[0012] As a further improvement to the above solution, the air heating mechanism includes a resistance wire, a temperature sensor, and a temperature controller. The temperature sensor is located inside the air heating mechanism and has several uniformly distributed permanent magnets embedded within it. The side of the permanent magnets away from the temperature sensor is in contact with the inner side of the air heating mechanism. The resistance wire is located in the middle of the shunt tube, and its two ends are fixed to the upper and lower sides of the air heating mechanism respectively by bolts. The resistance wire is electrically connected to the photovoltaic panel and the energy storage device. The temperature controller is located outside the air heating mechanism and is electrically connected to the temperature sensor. Several uniformly distributed ventilation holes are opened on the outer periphery of the temperature controller.

[0013] As a further improvement to the above solution, the electric valve is located in the indoor section of the ventilation pipe near the air outlet, and the control switch of the electric valve is located on the lower side of the ventilation pipe. The electric valve is electrically connected to the energy storage device. A sealing ring is circumferentially fitted at the contact position between the air inlet of the ventilation pipe and the building wall, and the inner diameter of the sealing ring is adapted to the outer diameter of the ventilation pipe.

[0014] As a further improvement to the above solution, the cleaning mechanism includes a mounting ring, scrapers, an auger, and a linkage assembly; the mounting ring is rotatably mounted on the inner ring of the ventilation pipe, and the second filter screen is fixed to the inner ring of the mounting ring; several scrapers are provided, and the scrapers are evenly fixed on the front outer wall of the mounting ring, with the long side of the scraper abutting against the inner wall of the ventilation pipe; the auger is rotatably connected to the front outer wall of the mounting ring through a connecting shaft, with the outer edge of the auger abutting against the inner wall of the ventilation pipe; the linkage assembly is installed on the inner side of the ventilation pipe and is used to drive the mounting ring to rotate 180° and connect the auger to the blower fan.

[0015] Through the above technical solution, the scraper can remove dust from the inner wall of the ventilation pipe and the surface of the second filter screen, and the auger can transport the scraped dust to the outside, realizing automatic dust cleaning.

[0016] As a further improvement to the above solution, the linkage component includes a movable shaft, a fixed sleeve, a connector, and a driving component. The movable shaft is coaxially and movably inserted into the center of the second filter screen. The fixed sleeve is movably fitted outside the end of the movable shaft located on the back of the second filter screen, and the fixed sleeve is fixedly connected to the inner wall of the ventilation pipe through a fixed rod. A guide shaft is fixed to the inner ring of the fixed sleeve, and a guide groove is spirally arranged along the outer ring of the movable shaft. The guide groove has a half-helix structure. The end of the guide shaft away from the fixed sleeve extends into the guide groove and is slidably connected to the guide groove. The connector is coaxially and rotatably connected to the end of the movable shaft away from the air inlet. The driving component is installed on the inner wall of the ventilation pipe and is used to drive the connector to move along the axial direction of the ventilation pipe.

[0017] Through the above technical solution, the cooperation between the guide shaft and the half-helical guide groove enables the movable shaft to rotate 180° when moving axially, thereby driving the mounting ring to rotate synchronously.

[0018] As a further improvement to the above solution, the end of the connecting shaft away from the auger extends to the back of the mounting ring and is movably fitted with a movable sleeve. The inner ring of the movable sleeve has a limiting groove arranged along its axial direction. The outer wall of the connecting shaft is fixed with a limiting plate arranged along its axial direction. The side of the limiting plate away from the connecting shaft extends into the limiting groove and is slidably connected to the limiting groove. A conical gear ring is fixed to the outer periphery of the connector. One end of the movable sleeve is fixed with a driven bevel gear that meshes with the conical gear ring. The outer periphery of the movable shaft is fixedly connected to the outer periphery of the movable sleeve through a fixing rod.

[0019] Through the above technical solution, by utilizing the cooperation between the limiting plate and the limiting groove, the connecting shaft can move axially along the movable sleeve and rotate synchronously with the movable sleeve, thereby realizing the power transmission of the auger.

[0020] As a further improvement to the above solution, one end of the output shaft of the blower fan is fixed with a mounting shaft. The end of the mounting shaft away from the blower fan has several insertion holes arranged along its axial direction. The connector is coaxially arranged with the mounting shaft, and the end of the connector near the mounting shaft has several buffer holes. The buffer holes are provided with a connector that is connected to the insertion hole. The connector includes a spring and a rod. One end of the spring is fixedly connected to the inner wall of the buffer hole, and the other end is fixedly connected to one end of the rod. The other end of the rod extends to the outside of the buffer hole and is adapted to the insertion hole.

[0021] Through the above technical solution, the connector can realize the rapid transmission connection between the connector head and the blower fan, thereby using the blower fan to drive the connector head to rotate. The spring setting can play a buffering role, avoiding damage caused by hard contact between the plug rod and the socket, and also making it convenient for the plug rod to automatically insert into the socket after the socket is aligned.

[0022] As a further improvement to the above solution, the driving component includes a connecting ring and a telescopic component installed on the inner wall of the ventilation pipe. The connecting ring is rotatably sleeved on the outer circumference of the connector. The output end of the telescopic component is fixedly connected to the outer ring of the connecting ring through a connecting rod. The telescopic component is electrically connected to the energy storage device.

[0023] As a further improvement to the above solution, a protective net is installed at one end of the movable shaft located on the front of the second filter screen, and the protective net covers the air inlet of the air exchange pipe.

[0024] The above technical solution can effectively prevent birds from entering the ventilation pipe.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. Low carbon and energy saving, reducing energy consumption and carbon emissions: Solar energy is converted into electrical energy through photovoltaic panels and stored in the energy storage device to power electrical components such as air heating mechanism, electric valve, and expansion joint. No mains power is required. When there is a large temperature difference between indoors and outdoors, the electric valve is closed to allow outdoor air to enter the room after being heated by the diversion pipe and air heating mechanism, ensuring that the intake air temperature is close to the indoor temperature, which greatly reduces the energy consumption of indoor air conditioning and achieves the effect of energy saving and emission reduction.

[0027] 2. Automatic dust removal ensures ventilation efficiency: The scraper of the cleaning mechanism can scrape off the dust inside the air inlet of the ventilation pipe and the surface of the second filter screen. After the linkage component drives the mounting ring to rotate 180°, the auger is connected to the blower fan. After the blower fan rotates, it drives the auger to rotate and transport the scraped dust to the outside of the ventilation pipe. No manual disassembly and cleaning is required, which reduces maintenance costs and maintains the ventilation efficiency of the device for a long time.

[0028] 3. Good structural protection and reduced maintenance frequency: The photovoltaic panels are tilted to shield and protect the energy storage device and the air outlet of the ventilation pipe, preventing rainwater and external debris from entering the device. The energy storage device is equipped with a waterproof protective shell, which further improves the waterproof performance of the device. The protective net can prevent birds, mosquitoes and other foreign objects from entering the ventilation pipe and avoid blockage of the device.

[0029] 4. Precise temperature control for enhanced user comfort: The temperature sensor in the air heating mechanism detects the airflow temperature in real time, and the temperature controller can flexibly set the heating temperature threshold to achieve precise control of the intake air temperature, avoiding excessively high or low intake air temperatures and improving the comfort of the indoor air environment.

[0030] 5. Good sealing performance to ensure air cleanliness: A sealing ring is installed at the contact point between the air inlet of the ventilation pipe and the wall to prevent unfiltered outdoor air from entering the room through gaps. The air inlet and outlet are equipped with a second filter and a first filter, respectively, to double filter outdoor air and effectively improve the cleanliness of indoor air. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the novel low-carbon energy-saving ventilation device for buildings proposed in this experiment.

[0032] Figure 2 This is a schematic diagram of the air heating structure of the novel low-carbon energy-saving ventilation device for buildings proposed in this experiment.

[0033] Figure 3 This is a schematic diagram of the air outlet structure of the novel low-carbon energy-saving ventilation device for buildings proposed in this experiment.

[0034] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle;

[0035] Figure 5 This is a front sectional view of the ventilation pipe;

[0036] Figure 6 This is a schematic diagram of the protective net structure;

[0037] Figure 7 This is a structural diagram showing the front view of the second filter screen inside the ventilation pipe, the fan, and the cleaning mechanism.

[0038] Figure 8 This is a schematic diagram of the structure of the back of the second filter screen and the linkage mechanism.

[0039] Figure 9 This is a schematic diagram of the rotating component.

[0040] Figure 10 This is a schematic diagram of the limiting groove and the limiting block.

[0041] Explanation of key symbols:

[0042] 1. Ventilation pipe; 2. Photovoltaic panel; 3. Energy storage device; 4. Electric valve; 5. Air heating mechanism; 6. Diverter pipe; 7. Temperature controller; 8. First filter screen; 9. Blower fan; 10. Air inlet; 11. Air outlet; 12. Mounting rod; 13. Protective shell; 14. Resistance wire; 15. Temperature sensor; 16. Permanent magnet; 17. Reinforcing frame; 18. Fixing bracket; 19. Ventilation hole; 20. Telescopic component; 21. Connecting rod ; 22. Mounting shaft; 23. Conical gear ring; 24. Movable sleeve; 25. Screwdriver; 26. Movable shaft; 27. Protective net; 28. Scraper; 29. ​​Mounting ring; 30. Fixed sleeve; 31. Connecting ring; 32. Connector; 33. Second filter screen; 34. Insertion hole; 35. Guide shaft; 36. Guide groove; 37. Buffer hole; 38. Limiting plate; 39. Connecting shaft; 40. Limiting groove; 41. Driven bevel gear; 42. Insert rod. Detailed Implementation

[0043] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0044] Example 1:

[0045] Please combine Figure 1 - Figure 10 This embodiment of a building low-carbon energy-saving ventilation device includes a ventilation pipe 1, a photovoltaic panel 2, a diversion pipe 6, and an electric valve 4. The photovoltaic panel 2 is fixed to the upper side of the air outlet end of the ventilation pipe 1, and the photovoltaic panel 2 is electrically connected to the energy storage device 3. The photovoltaic panel 2 is inclined and its coverage area covers the energy storage device 3 and the air outlet 11 of the ventilation pipe 1, which can fully receive solar energy and provide shading and protection for the energy storage device 3 and the air outlet 11.

[0046] A square protective shell 13 is installed at the end of the air outlet 11. The energy storage device 3 is covered with a waterproof protective shell, which is connected to the photovoltaic panel 2 through the mounting rod 12. The bottom is fixed to the protective shell 13 by bolts. The inner wall of the protective shell 13 is adapted to the outer periphery of the air outlet end of the ventilation pipe 1 and is fixed to the building wall by bolts.

[0047] An electric valve 4 is installed in the indoor section of the ventilation pipe 1 near the air inlet 10. The control switch of the electric valve 4 is located on the lower side of the ventilation pipe 1, and the electric valve 4 is electrically connected to the energy storage device 3. Both ends of the diversion pipe 6 are connected to the ventilation pipe 1. An air heating mechanism 5 is installed in the middle of the diversion pipe 6. The air heating mechanism 5 is made of steel and includes a resistance wire 14, a temperature sensor 15, and a temperature controller 7. The temperature sensor 15 is located inside the air heating mechanism 5 and has several uniformly distributed permanent magnets 16 embedded inside. The side of the permanent magnets 16 away from the temperature sensor 15 is in contact with the inner side of the air heating mechanism 5. The steel air heating mechanism 5 has good thermal conductivity and high structural strength. The temperature sensor 15 can detect the airflow temperature in real time, and the temperature controller 7 can set the heating temperature threshold to achieve precise temperature control of the airflow.

[0048] The resistance wire 14 is located in the middle of the shunt tube 6, and its two ends are fixed to the upper and lower sides of the air heating mechanism 5 by bolts. It is also electrically connected to the photovoltaic panel 2 and the energy storage device 3. The temperature controller 7 is located outside the air heating mechanism 5 and is electrically connected to the temperature sensor 15. Several evenly distributed ventilation holes 19 are opened on its outer periphery.

[0049] A second filter 33 is installed at the air inlet 10 of the ventilation pipe 1, and a first filter 8 is installed at the air outlet 11. A blower 9 is installed near the air outlet 11 of the ventilation pipe 1, and a sealing ring is circumferentially fitted at the contact position between the air inlet 10 and the building wall. The inner diameter of the sealing ring is adapted to the outer diameter of the ventilation pipe 1. The sealing ring can ensure the airtightness of the connection between the ventilation pipe and the wall, and prevent unfiltered outdoor air from entering the room through gaps.

[0050] In this embodiment, a fixing frame 18 is provided on the inner side of the air outlet 11 of the air exchange pipe 1. The first filter screen 18 is detachably installed on the fixing frame 18 by screws. A reinforcing frame 17 that is fixed to the inner wall of the air exchange pipe 1 is installed on the outer side of the fixing frame 18.

[0051] The implementation principle of this embodiment is as follows: the photovoltaic panel 2 receives solar energy outdoors and converts it into electrical energy, which is stored in the energy storage device 3. The energy storage device 3 provides power to electrical components such as the electric valve 4, the air heating mechanism 5, and the blower fan 9. After the blower fan 9 is started, outdoor air enters the ventilation pipe 1 from the air inlet 10, is filtered by the second filter screen 33, and flows into the room, thereby introducing outside air into the room. The temperature sensor 15 detects the airflow temperature entering the diversion pipe 6 in real time and transmits the temperature signal to the temperature controller 7. When a large temperature difference between indoors and outdoors is detected (outdoor temperature...), the controller will activate the temperature control. When the temperature is too low, the electric valve 4 is closed, and outdoor air can only flow through the diversion pipe 6. At this time, the energy storage device 3 supplies power to the resistance wire 14, and the resistance wire 14 heats the airflow. The temperature controller 7 controls the heating temperature of the resistance wire 14 according to the preset threshold, so that the temperature of the heated airflow is close to the indoor temperature, and then enters the room. This avoids the indoor air conditioner from increasing energy consumption due to excessive temperature difference, and achieves the effect of low carbon energy saving and reducing carbon emissions. When the temperature difference between indoor and outdoor is small, the electric valve 4 is opened, and outdoor air directly enters the room through the ventilation pipe 1 without heating, reducing energy consumption.

[0052] Example 2:

[0053] Combination Figure 1 and Figure 5-10 As shown, this embodiment is further improved on the basis of embodiment 1 in that it also includes a cleaning mechanism. The cleaning mechanism is installed inside the air exchange pipe 1 and is used to clean the dust inside the air inlet 10 and the dust attached to the surface of the second filter screen 33. The cleaning mechanism includes an installation ring 29, a scraper 28, an auger 25 and a linkage assembly.

[0054] The mounting ring 29 is rotatably mounted on the inner ring of the ventilation pipe 1. The second filter screen 33 is fixed to the inner ring of the mounting ring 29. Several scrapers 28 are provided and evenly fixed on the front outer wall of the mounting ring 29, with their long sides abutting against the inner wall of the ventilation pipe 1. The auger 25 is rotatably connected to the front outer wall of the mounting ring 29 via the connecting shaft 39, with its outer edge abutting against the inner wall of the ventilation pipe 1. The end of the connecting shaft 39 away from the auger 25 extends to the back of the mounting ring 29 and is movably fitted with a movable sleeve 24. The inner ring of the movable sleeve 24 is opened... The connecting shaft 39 has an axial limiting groove 40, and an axial limiting plate 38 is fixed to the outer wall of the connecting shaft 39. The limiting plate 38 extends into the limiting groove 40 and is slidably connected to it. The scraper can scrape off the dust on the inner wall of the ventilation pipe and the surface of the second filter screen 33. The auger 25 can transport the scraped dust to the outside of the ventilation pipe 1 to realize automatic dust cleaning. The limiting plate 38 cooperates with the limiting groove 40, so that the connecting shaft 39 can move axially along the movable sleeve 24 and can rotate synchronously with the movable sleeve 24 to realize the power transmission of the auger 25.

[0055] The linkage assembly is installed inside the ventilation pipe 1 and includes a movable shaft 26, a fixed sleeve 30, a connector 32, and a drive component. The movable shaft 26 is coaxially inserted into the center of the second filter screen 33. A protective net 27 is installed at the end of the movable shaft 26 located on the front of the second filter screen 33, covering the air inlet 10 to prevent birds and insects from entering. The fixed sleeve 30 is movably fitted onto the section of the movable shaft 26 located on the back of the second filter screen 33 and is fixedly connected to the inner wall of the ventilation pipe 1 by a fixing rod. A guide shaft 35 is fixed to the inner ring of the fixed sleeve 30, and a guide groove 36 with a half-helix structure is opened on the outer ring of the movable shaft 26. The guide shaft 35 extends into the guide groove 36 and slides therewith. The cooperation between the guide shaft 35 and the half-helix guide groove 36 allows the movable shaft 26 to rotate 180° when moving axially, thereby driving the mounting ring 29 to rotate synchronously.

[0056] The connector 32 is coaxially rotatably connected to the end of the movable shaft 26 away from the air inlet 10. A conical gear ring 23 is fixed on its outer circumference. A driven bevel gear 41 that meshes with the conical gear ring 23 is fixed on the outer wall of the movable sleeve 24. The outer circumference of the movable shaft 26 is fixedly connected to the outer circumference of the movable sleeve 24 through a fixing rod. One end of the output shaft of the blower fan 9 is fixed with a mounting shaft 22. Several axial insertion holes 34 are opened at the end of the mounting shaft 22. A buffer hole 37 is opened at the end of the connector 32 near the mounting shaft 22. A plug-in component is provided in the buffer hole 37. The plug-in component includes a spring and a plug rod 42. One end of the spring is connected to the inner wall of the buffer hole 37, and the other end is connected to the plug rod 42. The plug rod 42 extends to the outside of the buffer hole 37 and is adapted to the insertion hole 34. The plug-in component can realize the quick transmission connection between the connector and the blower fan 9. The spring can play a buffering role to avoid damage caused by hard contact between the plug rod 42 and the insertion hole 34.

[0057] The driving component includes a connecting ring 31 and a telescopic component 20. The connecting ring 31 is rotatably sleeved on the outer periphery of the connector 32. The telescopic component 20 is an electric telescopic rod. The fixed end is installed on the inner wall of the ventilation pipe 1, and the output end is fixedly connected to the outer ring of the connecting ring 31 through the connecting rod 21. The telescopic component 20 is electrically connected to the energy storage device 3. The telescopic component drives the connecting ring 31 and the connector 32 to move synchronously, completing the docking and separation with the mounting shaft 22.

[0058] In this embodiment, a protective net 27 is installed at one end of the movable shaft 26 on the front of the second filter screen 33. The protective net 27 covers the air inlet 10 of the ventilation pipe 1. The protective net 27 can effectively prevent birds from entering the ventilation pipe 1 and avoid clogging of the device. The protective net 27 moves synchronously with the movable shaft 26, and the outer ring of the protective net 27 does not contact the scraper 28 and the auger 25.

[0059] The implementation principle of this embodiment is as follows: The ventilation and energy-saving principle of this embodiment is the same as that of embodiment 1. When dust accumulates on the surface of the second filter screen 33 and the inside of the air inlet 10 of the ventilation pipe 1 and needs to be cleaned, the energy storage device 3 supplies power to the telescopic component 20. The output end of the telescopic component 20 extends out and drives the connecting ring 31 and the connecting head 32 to move along the ventilation pipe 1 axis toward the blower fan 9 through the connecting rod 21. The movement of the connecting head 32 drives the movable shaft 26 to move synchronously. The guide shaft 35 in the fixed sleeve 30 slides along the half-helical guide groove 36 of the movable shaft 26, driving the movable shaft 26 to rotate 180° around its own axis. The rotation of the movable shaft 26 drives the mounting ring 29 to rotate synchronously 180° through the movable sleeve 24, the limiting plate 38 and the connecting shaft 39. The rotation of the mounting ring 29 drives the scraper 28 and the auger 25 to rotate. The scraper 28 scrapes away the dust on the inside of the air inlet 10 of the ventilation pipe 1 and the surface of the second filter screen 33.

[0060] Simultaneously, the connector 32 moves towards the mounting shaft 22, and the insert rod 42, under the elastic force of the spring, inserts into the insertion hole 34 of the mounting shaft 22, thus realizing the transmission connection between the connector 32 and the blower fan 9. When the insert rod 42 is not inserted into the corresponding insertion hole 34 when it contacts the mounting shaft 22, it will align with the insertion hole 34 as the mounting shaft 22 rotates, and finally insert into the corresponding insertion hole 34 under the elastic force of the spring. Afterwards, as the blower fan 9 rotates, the mounting shaft 22 drives the connector 32 and the conical gear ring 23 to rotate. The gear ring 23 drives the movable sleeve 24 and the connecting shaft 39 to rotate via the driven bevel gear 41, which in turn drives the auger 25 to rotate. The rotation of the auger 25 transports the dust scraped off by the scraper 28 to the outside along the ventilation pipe 1, realizing automatic dust cleaning. After cleaning, the output end of the telescopic component 20 retracts, driving the connector 32 to reset, the insertion rod 42 to separate from the insertion hole 34, and the movable shaft 26 and the mounting ring 29 to rotate 180° in the opposite direction to reset, waiting for the next cleaning operation. At this time, the blower fan 9 will not drive the auger 25 to rotate when it is working normally.

[0061] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A low-carbon, energy-saving ventilation device for buildings, characterized in that, It includes a ventilation pipe (1), a photovoltaic panel (2), a diversion pipe (6), an electric valve (4), and a cleaning mechanism; The photovoltaic panel (2) is fixed on the upper side of the air outlet of the ventilation pipe (1), and the photovoltaic panel (2) is electrically connected to the energy storage device (3). An electric valve (4) is provided in the indoor section of the ventilation pipe (1). Both ends of the diversion pipe (6) are connected to the ventilation pipe (1), and an air heating mechanism (5) is provided in the middle of the diversion pipe (6). The air exchange pipe (1) is provided with a second filter screen (33) at the air inlet (10) and a first filter screen (8) at the air outlet (11). A blower fan (9) is provided near the air outlet (11) of the air exchange pipe (1). The cleaning mechanism is installed on the inside of the air exchange pipe (1) and is used to clean the dust inside the air inlet (10) and the dust attached to the surface of the second filter screen (33).

2. The building low-carbon energy-saving ventilation device according to claim 1, characterized in that, The photovoltaic panel (2) is set at an angle, and the coverage area of ​​the photovoltaic panel (2) covers the outlet (11) of the energy storage device (3) and the ventilation pipe (1). A square protective shell (13) is installed at the end of the outlet (11). The energy storage device (3) is provided with a waterproof protective shell. The energy storage device (3) is connected to the photovoltaic panel (2) through the mounting rod (12), and the bottom of the energy storage device (3) is fixed to the outdoor protective shell (13) of the ventilation pipe by bolts. The inner wall of the protective shell (13) is adapted to the outer periphery of the outlet end of the ventilation pipe (1), and the protective shell (13) is fixed to the building wall by bolts.

3. The building low-carbon energy-saving ventilation device according to claim 1, characterized in that, The air heating mechanism (5) includes a resistance wire (14), a temperature sensor (15), and a temperature controller (7). The temperature sensor (15) is located inside the air heating mechanism (5), and a number of uniformly distributed permanent magnets (16) are embedded in the temperature sensor (15). The side of the permanent magnet (16) away from the temperature sensor (15) is in contact with the inner side of the air heating mechanism (5). The resistance wire (14) is located in the middle of the shunt pipe (6), and the two ends of the resistance wire (14) are fixed to the upper and lower sides of the air heating mechanism (5) by bolts. The resistance wire (14) is electrically connected to the photovoltaic panel (2) and the energy storage device (3). The temperature controller (7) is located outside the air heating mechanism (5), and the temperature controller (7) is electrically connected to the temperature sensor (15). A number of uniformly distributed ventilation holes (19) are opened on the outer periphery of the temperature controller (7).

4. The building low-carbon energy-saving ventilation device according to claim 1, characterized in that, The electric valve (4) is located in the indoor section of the ventilation pipe (1) near the air outlet (11), and the control switch of the electric valve (4) is located on the lower side of the ventilation pipe (1). The electric valve (4) is electrically connected to the energy storage device (3). A sealing ring is circumferentially fitted at the contact position between the air inlet (10) of the ventilation pipe (1) and the building wall. The inner diameter of the sealing ring is adapted to the outer diameter of the ventilation pipe (1).

5. A building low-carbon energy-saving ventilation device according to claim 1, characterized in that, The cleaning mechanism includes an installation ring (29), a scraper (28), an auger (25), and a linkage assembly. The installation ring (29) is rotatably installed on the inner ring of the ventilation pipe (1), and the second filter screen (33) is fixed on the inner ring of the installation ring (29). There are several scrapers (28), and several scrapers (28) are evenly fixed on the front outer wall of the installation ring (29). The long side of the scraper (28) abuts against the inner wall of the ventilation pipe (1). The auger (25) is rotatably connected to the front outer wall of the installation ring (29) through a connecting shaft (39). The outer edge of the auger (25) abuts against the inner wall of the ventilation pipe (1). The linkage assembly is installed on the inner side of the ventilation pipe (1) and is used to drive the installation ring (29) to rotate 180° and make the auger (25) drive the fan (9).

6. A building low-carbon energy-saving ventilation device according to claim 1, characterized in that, The linkage assembly includes a movable shaft (26), a fixed sleeve (30), a connector (32), and a driving component. The movable shaft (26) is coaxially inserted into the center of the second filter screen (33). The fixed sleeve (30) is movably sleeved on the outside of the end of the movable shaft (26) located on the back of the second filter screen (33), and the fixed sleeve (30) is fixedly connected to the inner wall of the ventilation pipe (1) by a fixing rod. A guide shaft (35) is fixed to the inner ring of the fixed sleeve (30). The movable shaft (26) The outer ring is provided with a guide groove (36) spirally arranged along its surface. The guide groove (36) is a half-helical structure. The end of the guide shaft (35) away from the fixed sleeve (30) extends into the guide groove (36) and is slidably connected to the guide groove (36). The connector (32) is coaxially rotatably connected to the end of the movable shaft (26) away from the air inlet (10). The driving component is installed on the inner wall of the air exchange pipe (1) and is used to drive the connector (32) to move along the axial direction of the air exchange pipe (1).

7. A building low-carbon energy-saving ventilation device according to claim 6, characterized in that, The end of the connecting shaft (39) away from the auger (25) extends to the back of the mounting ring (29) and is movably fitted with a movable sleeve (24). The inner ring of the movable sleeve (24) is provided with a limiting groove (40) arranged along its axial direction. The outer wall of the connecting shaft (39) is fixed with a limiting plate (38) arranged along its axial direction. The side of the limiting plate (38) away from the connecting shaft (39) extends into the limiting groove (40) and is slidably connected to the limiting groove (40). The outer periphery of the connector (32) is fixed with a conical gear ring (23). One end of the movable sleeve (24) is fixed with a driven bevel gear (41) that meshes with the conical gear ring (23). The outer periphery of the movable shaft (26) is fixedly connected to the outer periphery of the movable sleeve (24) through a fixing rod.

8. A building low-carbon energy-saving ventilation device according to claim 6, characterized in that, One end of the output shaft of the blower (9) is fixed with a mounting shaft (22). The end of the mounting shaft (22) away from the blower (9) is provided with several insertion holes (34) arranged along its axial direction. The connector (32) is coaxially arranged with the mounting shaft (22), and the end of the connector (32) near the mounting shaft (22) is provided with several buffer holes (37). The buffer holes (37) are provided with a connector for inserting into the insertion hole (34). The connector includes a spring and a rod (42). One end of the spring is fixedly connected to the inner wall of the buffer hole (37), and the other end is fixedly connected to one end of the rod (42). The other end of the rod (42) extends to the outside of the buffer hole (37) and is adapted to the insertion hole (34).

9. A building low-carbon energy-saving ventilation device according to claim 6, characterized in that, The driving component includes a connecting ring (31) and a telescopic component (20) installed on the inner wall of the ventilation pipe (1). The connecting ring (31) is rotatably sleeved on the outer periphery of the connector (32). The output end of the telescopic component (20) is fixedly connected to the outer ring of the connecting ring (31) through a connecting rod (21). The telescopic component (20) is electrically connected to the energy storage device (3).

10. A building low-carbon energy-saving ventilation device according to claim 6, characterized in that, The movable shaft (26) is equipped with a protective net (27) at one end of the front of the second filter (33), and the protective net (27) covers the inlet of the air inlet (10) of the air exchange pipe (1).

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