Prefabricated building energy-saving ventilation system

Abstract

This invention relates to the field of ventilation system technology, specifically to an energy-saving ventilation system for prefabricated buildings. The system includes a wind duct and a fan fixed at the duct's port. Air guide plates are rotatably mounted on both sides of the wind duct. An air-guiding component is located near the outer side of each air guide plate to generate thrust when wind conditions are suitable. The air-guiding component includes a connecting frame fixedly mounted on the outer side of the air guide plate, and a rotating frame is fixedly connected to the connecting frame. By using the air-guiding component, when natural wind conditions are sufficient, natural wind can be guided into the wind duct to ventilate the building. Natural wind is used to replace or partially replace the wind generated by the fan, allowing for proactive fan shutdown and achieving energy savings. Simultaneously, the magnetic damping generated between the metal slider and the strong magnet helps stabilize the movement of the rotating plate, assisting in the stable entry of wind into the wind duct.

Description

Technical Field

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

[0002] Ventilation is a building environment control technology that uses methods such as air exchange and dilution or ventilation to control the spread and harm of air pollutants and ensure the quality of indoor and outdoor air environment. A ventilation system is a complete set of devices that realizes the function of ventilation, including air inlets, air outlets, air supply ducts, fans, cooling and heating, filters, control systems and other auxiliary equipment.

[0003] A Chinese patent with publication number CN114413379A discloses a passive building ventilation system, relating to the technical field of building ventilation. It includes an air duct connected to the building's interior, solar panels laid on the building's surface, and a heat exchange mechanism located at the air duct. The heat exchange mechanism includes a rainwater storage tank, a filter box with an internal cavity connected to the water storage tank, and a wind-driven component that drives the filter box to intermittently open and close the water storage tank. The solar panels provide heat energy to the water storage tank. When the wind force in the air duct reaches a certain value, the wind-driven component starts operating, causing the filter box to intermittently open and close the water storage tank. In winter, solar energy is used for heating, warming the air entering the building; in summer, water cooling is used to lower the temperature of the air entering the building, improving usability and convenience. This application has the effect of improving the use of passive buildings.

[0004] The above technical solution proposes energy-saving improvements for heat exchange and can achieve better utilization of external heat energy. However, in actual use, the energy-saving effect is not good, the heat transfer time is long, and the effect is not obvious. The main function of the ventilation system is to ventilate the building, to blow external air into the building and to guide the air inside the building to escape outward. Therefore, energy-saving measures for ventilation need to be improved. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a prefabricated building energy-saving ventilation system, which can effectively solve the problem of how to use external wind energy to increase indoor ventilation in the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides an energy-saving ventilation system for prefabricated buildings, including a wind duct and a fan fixed at the port of the wind duct. Air guide plates are rotatably installed on both sides of the wind duct, and an air-guiding component is provided near the outer side of the air guide plate to generate thrust on the air guide plate when the wind force meets the standard.

[0008] The air intake assembly includes a connecting frame fixedly installed on the outside of the air guide plate. A rotating frame is fixedly connected to the connecting frame. The top and bottom of the rotating frame are rotatably connected to the air receiving shell via a rotating shaft. A metal slider is fixedly installed at the bottom of the air guide plate. The bottom plate of the wind duct has a groove for the two metal sliders to slide. A push-button switch is fixedly installed on the bottom plate of the wind duct. When the air guide plate contacts the push-button switch, the fan stops working.

[0009] Furthermore, an elastic telescopic rod is fixedly connected between the wind-receiving shells on both sides, and a limit plate is fixedly connected to the side wall of the wind duct.

[0010] Furthermore, a strong magnet is fixedly installed on the side wall of the slide, and a stop groove is provided at the end of the slide.

[0011] Furthermore, a contact plate is fixedly connected to the side wall of the stop groove by a spring, and two elastic plates are fixedly installed on the side wall of the stop groove, with the elastic plates located between the side wall of the stop groove and the contact plate.

[0012] Furthermore, a connecting pipe is embedded and fixedly installed on the top or bottom plate of the wind-receiving shell near the wind duct, and a blocking plate is slidably installed inside the connecting pipe. A fixing frame is fixedly installed on the top or bottom plate of the wind-receiving shell near the wind duct, and a sliding rod is slidably inserted into the fixing frame. The sliding rod is fixedly installed on the top of the blocking plate, and a spring is fixedly connected between the blocking plate and the fixing frame.

[0013] Furthermore, the top and bottom plates of the wind duct are embedded with air guide pipes at the positions corresponding to the connecting pipes. The top of the air guide pipe extends vertically upward, and the bottom of the air guide pipe extends downward at an angle.

[0014] Furthermore, an inclined block is fixedly installed on the outer side of the blocking plate, which is used to connect the pipe to the air duct during the movement of the air duct. The inclined surface of the inclined block contacts the air duct and generates an upward or downward thrust on the air duct. A magnetic ring is fixedly installed at the top of the air duct, and a magnetic blocking plate is slidably installed in the magnetic ring, and the magnetic ring generates a magnetic attraction force on the magnetic blocking plate.

[0015] Furthermore, a semi-circular ring extends upward from the outer end of the connecting pipe to restrict the movement of the connecting pipe when it overlaps with the air duct.

[0016] Furthermore, the connecting frame includes a frame as the main body, and two grid plates are distributed inside the frame. One grid plate is embedded and fixedly installed inside the frame, and the other grid plate is slidably installed on the frame and fixedly connected to the rotating frame.

[0017] Furthermore, two scrapers facing the connecting frame are fixedly installed on both sides of the wind duct at positions corresponding to the connecting frame, for scraping away debris on the connecting frame.

[0018] The technical solution provided by this invention has the following advantages compared with known public technologies:

[0019] This invention uses a wind-guiding component to guide natural wind into the wind duct when natural wind conditions are sufficient, thereby ventilating the building. It utilizes natural wind to replace or partially replace the wind generated by the fan, and actively shuts down the fan to achieve energy-saving effects. At the same time, the magnetic damping generated between the metal slider and the strong magnet helps stabilize the movement of the rotating plate and assists in the stable entry of wind into the wind duct. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the air intake assembly and wind duct of the present invention;

[0023] Figure 3 This is a schematic diagram of the air intake assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the connecting frame of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the wind power duct of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 This is a half-sectional schematic diagram of the wind power duct of the present invention;

[0028] Figure 8 This is a schematic diagram of the air guide plate of the present invention.

[0029] The labels in the diagram represent: 1. Wind duct; 2. Fan; 3. Air guide plate; 4. Air intake assembly; 401. Connecting frame; 4011. Frame; 4012. Grid plate; 4013. Scraper; 402. Rotating frame; 403. Air receiving shell; 404. Fixed frame; 405. Blocking plate; 406. Sliding rod; 407. Inclined block; 408. Connecting pipe; 409. Air guide duct; 410. Magnetic ring; 411. Magnetized blocking plate; 412. Slide groove; 413. Stop groove; 414. Elastic sheet; 415. Contact plate; 416. Strong magnet; 417. Push-button switch; 5. Metal slider; 6. Limiting plate; 7. Elastic telescopic rod. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] The present invention will be further described below with reference to embodiments.

[0032] Example: Refer to Figures 1 to 8 An energy-saving ventilation system for prefabricated buildings includes a wind duct 1 and a fan 2 fixed at the port of the wind duct 1. Wind guide plates 3 are rotatably installed on both sides of the wind duct 1. An air-guiding component 4 is provided near the outer side of the wind guide plate 3 to generate thrust on the wind guide plate 3 when the wind force meets the standard.

[0033] The air intake assembly 4 includes a connecting frame 401 fixedly installed on the outside of the air guide plate 3. A rotating frame 402 is fixedly connected to the connecting frame 401. The top and bottom of the rotating frame 402 are rotatably connected to the air receiving housing 403 via a rotating shaft. A metal slider 5 is fixedly installed at the bottom of the air guide plate 3. The bottom plate of the wind duct 1 has a groove 412 for sliding two metal sliders 5. A push-button switch 417 is fixedly installed on the bottom plate of the wind duct 1. When the air guide plate 3 contacts the push-button switch 417, the fan 2 stops working. An elastic telescopic rod 7 is fixedly connected between the air receiving housings 403 on both sides. A limit plate 6 is fixedly connected to the side wall of the air guide plate 3 inside the wind duct 1.

[0034] During assembly, the wind duct 1 needs to be installed first, followed by fixing the fan 2 to the port of the wind duct 1, and then assembling the various parts of the air intake assembly 4 onto the wind duct 1. When the external wind force is strong, the wind force will generate a thrust on the wind-receiving shell 403 on one side of the wind duct 1, and through the transmission of the rotating frame 402, the connecting frame 401 pushes the air guide plate 3 into the wind duct 1. Since the air guide plate 3 is installed in a rotating manner, the movable end of the air guide plate 3 slides in the slide groove 412 by means of the metal slider 5, and the air guide plate 3 will rotate. During the process of the air guide plate 3 being pushed, the end of the air guide plate 3 gradually contacts the stationary air guide plate 3 on the other side, thereby completely sealing the port of the wind duct 1. At the same time, the pushed air guide plate 3 will also touch the push-button switch 417 on the same side inside the air duct 1, completely de-energizing the fan 2 and allowing it to shut down when the airflow is sufficient, reducing the fan 2's operating time and utilizing sufficient airflow for ventilation, thereby achieving energy-saving goals. Furthermore, in seasons or regions with strong natural winds, the fan 2 can operate at reduced power, allowing the partially opened air guide plate 3 and the fan 2 to jointly provide airflow into the air duct 1, thus enabling the fan 2 to operate at lower power and achieve better energy-saving effects. Ideally, a sliding rheostat or other related power regulator should be designed along the movement path of the air guide plate 3. As the opening of the air guide plate 3 increases and its movement path lengthens, the power of the fan 2 gradually decreases. This allows for better reduction of the fan 2's power during operation while ensuring ventilation, thereby achieving energy-saving goals. A sliding rheostat is installed at the bottom of the wind duct 1. The slider of the sliding rheostat is connected to the bottom of the wind guide plate 3. At the same time, the sliding rheostat is connected to the power supply circuit of the fan 2 (the specific connection method is now quite common and will not be described in detail in this invention). When the external wind pushes the wind guide plate 3 into the duct, the slider of the sliding rheostat moves along with it. The resistance of the sliding rheostat connected to the circuit changes, which reduces the working power of the fan 2 (this can be achieved by correctly configuring the circuit), thereby reducing the electrical energy consumed by the fan 2 and achieving the purpose of saving energy.

[0035] It should be noted that the power of fan 2 described above only represents the power actually required by fan 2 during operation, and is not the rated power of fan 2, which cannot be changed.

[0036] When the wind-receiving shell 403 on one side is subjected to force, the wind-receiving shell 403 on that side moves. The limiting plate 6 inside the wind duct 1 restricts the ability of the wind guide plate 3 to rotate outward. When the wind guide plate 3 on one side rotates into the wind duct 1, the wind guide plate 3 on the other side remains stationary. The wind-receiving shell 403 on the other side will squeeze the elastic telescopic rod 7, causing the elastic telescopic rod 7 to contract. The moving wind-receiving shell 403 is restricted by the two inclined blocks 407 and cannot rotate. This allows the wind-receiving shell 403 to move as close to the wind direction as possible, maximizing the use of natural wind power.

[0037] Specifically, refer to Figure 7 A strong magnet 416 is fixedly installed on the side wall of the slide 412 and is arranged opposite to each other. A stop groove 413 is provided at the end of the slide 412. A contact plate 415 is fixedly connected to the side wall of the stop groove 413 by a spring. Two elastic pieces 414 are fixedly installed on the side wall of the stop groove 413 and the elastic pieces 414 are located between the side wall of the stop groove 413 and the contact plate 415.

[0038] During the sliding process of the air guide plate 3 and the metal slider 5, the metal slider 5 slides in the groove 412 and is affected by the magnetic field of the strong magnet 416 on the groove 412. Since the wind force is fluctuating, when the wind force suddenly increases, the sliding speed of the air guide plate 3 will also increase, which will make the sliding speed of the metal slider 5 between the strong magnet 416 faster. The metal properties of the metal slider 5 will be damped when moving in the magnetic field, preventing the air guide plate 3 from moving too fast when the wind force increases, avoiding the air guide plate 3 from swaying back and forth quickly under natural wind, and ensuring that the position change of the air guide plate 3 is not too large, thereby ensuring that the wind force can enter the wind duct 1 more stably, thus ensuring that the natural wind can generate a stable effect.

[0039] When the wind is strong, the metal slider 5 will slowly slide along the slide groove 412 into the stop groove 413, pushing the two elastic plates 414 and the contact plate 415, so that the metal slider 5 is in the stop groove 413 and stuck between the contact plate 415 and the elastic plate 414, so that the air guide plate 3 is in the maximum open state. When the wind decreases, the spring on the side wall of the contact plate 415 will overcome the elastic force of the elastic plate 414 and push the metal slider 5 out of the stop groove 413, so that the air guide plate 3 slowly returns to its original position. At this time, the cross-section of the wind duct 1 gradually increases, the fan 2 starts, and the wind generated by the fan 2 is introduced into the wind duct 1 with a large wind pressure, so that the wind generated by the fan 2 acts quickly in the wind duct 1 to ensure the ventilation effect.

[0040] In detail, refer to Figure 3 , Figure 5 and Figure 6A connecting pipe 408 is embedded and fixedly installed on the top or bottom plate of the wind-receiving shell 403 near the wind duct 1. A blocking plate 405 is slidably installed inside the connecting pipe 408. A fixing frame 404 is fixedly installed on the top or bottom plate of the wind-receiving shell 403 near the wind duct 1. A sliding rod 406 is slidably inserted into the fixing frame 404. The sliding rod 406 is fixedly installed on the top of the blocking plate 405, and a spring is fixedly connected between the blocking plate 405 and the fixing frame 404. The top and bottom plates of the wind duct 1 are embedded and fixedly installed at positions corresponding to the connecting pipe 408. The device is equipped with an air guide duct 409, the top of which extends vertically upward and the bottom of which extends downward at an angle. An inclined block 407 is fixedly installed on the outer side of the blocking plate 405. During the movement of the connecting pipe 408 to the air guide duct 409, the inclined surface of the inclined block 407 contacts the air guide duct 409 and exerts an upward or downward thrust on the air guide duct 409. A magnetic ring 410 is fixedly installed at the top of the air guide duct 409. A magnetic blocking plate 411 is slidably installed in the magnetic ring 410 and the magnetic ring 410 exerts a magnetic attraction on the magnetic blocking plate 411.

[0041] When the receiving housing 403 moves to its furthest point, i.e., the metal slider 5 is in the stop groove 413 and the air guide plate 3 completely blocks the port of the air duct 1, and the fan 2 stops running, the connecting pipe 408 moves together with the receiving housing 403 to the top or bottom of the air duct 1 and overlaps with the air guide pipe 409. During this process, the inclined block 407 will contact the top of the air guide pipe 409, and the inclined surface of the inclined block 407 will decompose the force into an upward or downward force, forcing the blocking plate 405 to rise or fall. And through the rise or fall of the blocking plate 405, the blocking plate 409 will be stopped. 5. Once the blockage of the connecting pipe 408 is removed and the connecting pipe 408 and the air duct 409 are fully overlapped, the inclined block 407 extends again and exerts a pushing force on the magnetic blocking plate 411, forcing the magnetic blocking plate 411 to leave contact with the magnetic ring 410, thus opening the port of the air duct 409 and connecting the connecting pipe 408 and the air duct 409. At this time, the air entering the air receiving housing 403 will enter the air duct 409 through the connecting pipe 408, and enter the air duct 1 through the inclined lower end of the air duct 409, supplementing the air duct 1 with more air and improving the ventilation effect.

[0042] It should be noted that the magnetic ring 410 always exerts a magnetic attraction on the magnetic blocking plate 411, and the magnetic blocking plate 411 will be unable to slide out of the air duct 409 due to the tilt of the end of the air duct 409. When the inclined block 407 leaves, the magnetic blocking plate 411 will reset under the magnetic attraction of the magnetic ring 410.

[0043] Specifically, refer to Figure 3The outer end of the connecting pipe 408 extends upward into a semi-circular ring, which is used to restrict the movement of the connecting pipe 408 when the connecting pipe 408 and the air guide pipe 409 overlap.

[0044] After the connecting pipe 408 and the air guide pipe 409 overlap, the protruding semi-circular ring on the connecting pipe 408 will restrict the further movement of the connecting pipe 408, prevent the excessive movement of the wind-receiving shell 403, and the fixed wind-receiving shell 403 can better guide the natural wind into the wind power duct 1.

[0045] Furthermore, referring to Figure 4 and Figure 5 The connecting frame 401 includes a frame 4011 as the main body. Two grid plates 4012 are distributed inside the frame 4011. One grid plate 4012 is embedded and fixedly installed inside the frame 4011, and the other grid plate 4012 is slidably installed on the frame 4011 and fixedly connected to the rotating frame 402. Two scrapers 4013 facing the connecting frame 401 are fixedly installed on the two side walls of the wind duct 1 at the positions corresponding to the connecting frame 401, for scraping away debris on the connecting frame 401.

[0046] As the air guide plate 3 rotates into the air duct 1, the frame 4011 also moves into the air duct 1. The grid plate 4012, which slides in the frame 4011, is fixed to the rotating frame 402. During the rotation, the sliding grid plate 4012 will slide out of the frame 4011 until the air guide plate 3 has completely moved. The two grid plates 4012 are then completely inside the air duct 1 and fill the cross section of the air duct 1, preventing debris carried by the natural wind from entering the air duct 1. When the grid plate 4012 moves relative to the air duct 1, the scraper 4013 will scrape the surface of the grid plate 4012 to remove debris, ensuring the long-term use of the grid plate 4012.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prefabricated building energy-saving ventilation system, comprising a wind duct (1) and a fan (2) fixed at the port of the wind duct (1), characterized in that, The wind duct (1) is rotatably mounted on both sides with wind guide plates (3), and the wind guide plates (3) are provided with wind-inducing components (4) near the outer side, which are used to generate thrust on the wind guide plates (3) when the wind force meets the standard. The air intake assembly (4) includes a connecting frame (401) fixedly installed on the outside of the air guide plate (3). A rotating frame (402) is fixedly connected to the connecting frame (401). The top and bottom of the rotating frame (402) are rotatably connected to the air receiving shell (403) via a rotating shaft. A metal slider (5) is fixedly installed at the bottom of the air guide plate (3). The bottom plate of the wind duct (1) has a groove (412) for sliding two metal sliders (5). A push-button switch (417) is fixedly installed on the bottom plate of the wind duct (1). When the external wind force is strong, the wind force generates a thrust on the wind-receiving shell (403) on one side of the wind duct (1), and through the transmission of the rotating frame (402), the connecting frame (401) pushes the air guide plate (3) into the wind duct (1). The movable end of the air guide plate (3) slides in the groove (412) by the metal slider (5), and the air guide plate (3) rotates. During the process of the air guide plate (3) being pushed, the end of the air guide plate (3) gradually contacts the stationary air guide plate (3) on the other side, thereby completely sealing the port of the wind duct (1). At the same time, the pushed air guide plate (3) touches the push switch (417) on the same side inside the wind duct (1), so that the fan (2) is completely de-energized. An elastic telescopic rod (7) is fixedly connected between the wind-receiving shells (403) on both sides, and a limit plate (6) is fixedly connected to the side wall of the wind duct (1) of the wind guide plate (3). A strong magnet (416) is fixedly installed on the side wall of the slide (412) and oppositely arranged. A stop groove (413) is provided at the end of the slide (412).

2. The prefabricated building energy-saving ventilation system according to claim 1, characterized in that, The side wall of the stop groove (413) is fixedly connected to a contact plate (415) by a spring. Two elastic plates (414) are fixedly installed on the side wall of the stop groove (413) and the elastic plates (414) are located between the side wall of the stop groove (413) and the contact plate (415).

3. The prefabricated building energy-saving ventilation system according to claim 2, characterized in that, A connecting pipe (408) is embedded and fixedly installed on the top or bottom plate of the wind-receiving shell (403) near the wind duct (1). A blocking plate (405) is slidably installed inside the connecting pipe (408). A fixing frame (404) is fixedly installed on the top or bottom plate of the wind-receiving shell (403) near the wind duct (1). A sliding rod (406) is slidably inserted inside the fixing frame (404). The sliding rod (406) is fixedly installed on the top of the blocking plate (405), and a spring is fixedly connected between the blocking plate (405) and the fixing frame (404).

4. The prefabricated building energy-saving ventilation system according to claim 3, characterized in that, The top and bottom plates of the wind duct (1) are fitted with air guide pipes (409) at the positions corresponding to the connecting pipes (408). The top of the air guide pipe (409) extends vertically upward, and the bottom of the air guide pipe (409) extends downward at an angle.

5. The prefabricated building energy-saving ventilation system according to claim 4, characterized in that, An inclined block (407) is fixedly installed on the outer side of the blocking plate (405) for connecting the pipe (408) to the air duct (409) during the movement of the air duct (409). The inclined surface of the inclined block (407) contacts the air duct (409) and generates an upward or downward thrust on the air duct (409). A magnetic ring (410) is fixedly installed at the top of the air duct (409). A magnetic blocking plate (411) is slidably installed in the magnetic ring (410) and the magnetic ring (410) generates a magnetic attraction force on the magnetic blocking plate (411).

6. The prefabricated building energy-saving ventilation system according to claim 5, characterized in that, The outer end of the connecting pipe (408) extends upward into a semi-circular ring, which is used to restrict the movement of the connecting pipe (408) when the connecting pipe (408) and the air duct (409) overlap.

7. The prefabricated building energy-saving ventilation system according to claim 6, characterized in that, The connecting frame (401) includes a frame (4011) as the main body, and two grid plates (4012) are distributed inside the frame (4011). One grid plate (4012) is embedded and fixedly installed inside the frame (4011), and the other grid plate (4012) is slidably installed on the frame (4011) and fixedly connected to the rotating frame (402).

8. The prefabricated building energy-saving ventilation system according to claim 7, characterized in that, Two scrapers (4013) facing the connecting frame (401) are fixedly installed on both sides of the wind duct (1) at the position corresponding to the connecting frame (401) to scrape off debris on the connecting frame (401).

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