A multi-mode ventilation system and air conditioner thereof

Abstract

The present invention discloses a multi-mode ventilation system, comprising: a fan, wherein a purification module is arranged inside the fan; a first air inlet, which is arranged on the air inlet section of the fan and is used to be connected to the outdoors; a second air inlet, which is arranged on the air inlet section of the fan and is used to be connected to the indoors; an air inlet airflow reversing component, which is arranged between the first air inlet and the second air inlet and is used to make the first air inlet or the second air inlet connected in a single manner; a first air outlet, which is arranged on the air outlet section of the fan and is used to be connected to the indoors; a second air outlet, which is arranged on the air outlet section of the fan and is used to be connected to the outdoors; an air outlet airflow reversing component, which is arranged between the first air outlet and the second air outlet and is used to make the first air outlet or the second air outlet connected in a single manner; compared with the prior art, the present invention has enriched usage functions and has relatively low cost.

Description

Technical Field

[0001] This invention relates to the field of air conditioning structure technology, specifically to a multi-mode ventilation system and its air conditioner. Background Technology

[0002] Since people spend most of their time indoors, indoor air quality is closely related to human health, making indoor air purification increasingly important. From the perspective of airflow direction, air purification principles can be divided into two main categories: one is indoor air recirculation purification, represented by air purifiers. When indoor air continuously flows through the air purifier, its internal dust removal and sterilization components remove or kill particulate matter and viruses, achieving indoor air purification; the other is continuous introduction of fresh outdoor air to dilute and replace indoor air, represented by fresh air systems and fresh air conditioners. Fresh air dilution and replacement can be further divided into unidirectional slightly positive pressure fresh air exchange and bidirectional flow fresh air exchange. Unidirectional slightly positive pressure fresh air exchange introduces fresh air from one side of the outside into the room, maintaining a slightly positive pressure while continuously exhausting indoor air; bidirectional flow fresh air exchange both introduces air from the outside and exhausts air from the room, with both directions of air exchange achieved by a fan, thus purifying indoor air.

[0003] Existing air purification technologies, including internal air circulation purification, unidirectional micro-positive pressure fresh air exchange, and bidirectional flow fresh air exchange, and their products, have relatively limited functions and shortcomings. For example, with unidirectional micro-positive pressure fresh air exchange, when the introduced fresh air reaches the indoor air saturation pressure, it becomes difficult to expel indoor air to release the pressure due to the increasingly better sealing of newly renovated rooms. Even with the fan running, the effect of indoor-outdoor air exchange is greatly reduced. Similarly, bidirectional flow fresh air exchange actively supplies air into the room and exhausts it to the outside using a fan. This typically requires two sets of ductwork (one inlet duct and one outlet duct), and sometimes two fans. This not only occupies space in the overall structure and increases costs but also complicates after-sales installation. Furthermore, because the inlet and outlet of bidirectional flow fresh air exchange are close together, the fresh air introduced into the room is easily exhausted directly to the outside due to the limited air delivery distance. For example, air recirculation purification, specifically air purifiers, is not as effective as indoor-outdoor fresh air exchange in removing formaldehyde and other gases continuously released from newly renovated homes. Moreover, the cost of purchasing a single unit is high, and it requires expensive indoor space, making it not very economical. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a multi-mode ventilation system to solve the problems of the relatively simple functions and high costs of existing air purification technologies such as internal air circulation purification, unidirectional micro-positive pressure fresh air exchange and bidirectional flow fresh air exchange and their products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-mode ventilation system, comprising:

[0006] A fan, wherein a purification module is installed inside the fan;

[0007] The first air inlet is located on the air inlet section of the fan and is used to connect with the outside.

[0008] The second air inlet is located on the air inlet section of the fan and is used to connect with the indoor environment;

[0009] An airflow reversing component is disposed between a first air inlet and a second air inlet to enable either the first air inlet or the second air inlet to be connected individually.

[0010] The first air outlet is located on the air outlet section of the fan and is used to connect with the indoor environment;

[0011] The second air outlet is located on the air outlet section of the fan and is used to connect with the outside.

[0012] An airflow reversing component is disposed between a first air outlet and a second air outlet to enable either the first air outlet or the second air outlet to conduct independently.

[0013] Working principle:

[0014] The first operating mode is the micro-positive pressure fresh air mode: In this mode, the air intake and air outlet reversing components are adjusted to open the first air inlet and the first air outlet, and close the second air inlet and the second air outlet; outdoor air enters the fan through the first air inlet and is purified by the purification module, and then the airflow flows into the room through the first air outlet, gradually forming and maintaining a micro-positive pressure in the room; the original polluted air in the room is continuously diluted and discharged to the outside, achieving the purpose of replacing and purifying the indoor air with fresh air under micro-positive pressure.

[0015] The second operating mode is the internal circulation air purifier mode: In this mode, the air intake and exhaust airflow reversing components are adjusted to open the second air intake and the first air outlet, and close the first air intake and the second air outlet; the polluted indoor air enters the fan through the second air intake and is purified by the purification module, and then the airflow flows back into the room through the first air outlet; the polluted indoor air is continuously filtered and purified by the purification module inside the fan, achieving the purpose of self-circulation and purification of indoor air.

[0016] The third operating mode is the bidirectional fresh air exchange-exhaust mode: In this mode, the air intake and exhaust air reversing components are adjusted to open the second air inlet and the second air outlet, while closing the first air inlet and the first air outlet; the polluted indoor air is purified by the purification module inside the fan at the second air inlet, and then the airflow flows to the outside from the second air outlet; the polluted indoor air is continuously exhausted to the outside by the fan, thus achieving the purpose of purifying the indoor air.

[0017] The present invention also adopts the following technical solution: an air conditioner, including the above-mentioned multi-mode ventilation system.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This multi-mode ventilation system mainly consists of a fan, a purification module, an inlet airflow reversing component, and an outlet airflow reversing component. By cooperating with the inlet and outlet airflow reversing components, the conduction state of the first air inlet, the second air inlet, the first air outlet, and the second air outlet is adjusted to achieve three modes: micro-positive pressure fresh air mode, internal circulation air purifier mode, and bidirectional airflow fresh air-exhaust mode. This enriches the functions and has a relatively low cost. At the same time, an airflow channel is formed inside the fan to avoid the problem of fresh air that has just been introduced into the room being directly exhausted to the outside due to the close distance between the air inlet and the exhaust outlet.

[0020] 2. The multi-mode ventilation system in this air conditioner mainly consists of a fan, a purification module, an inlet airflow reversing component, and an outlet airflow reversing component. By cooperating with the inlet and outlet airflow reversing components, the conduction state of the first air inlet, the second air inlet, the first air outlet, and the second air outlet is adjusted to achieve the adjustment of three modes: micro-positive pressure fresh air mode, internal circulation air purifier mode, and bidirectional airflow fresh air-exhaust mode. This enriches the functions and has a relatively low cost. At the same time, an airflow channel is formed in the fan to avoid the problem of fresh air that has just been introduced into the room being directly exhausted to the outside due to the close distance between the air inlet and the exhaust outlet. Attached Figure Description

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

[0022] Figure 2 This is a schematic diagram of the structure of the air inlet shroud in one embodiment of the present invention. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the structure of the air inlet shroud in one embodiment of the present invention. Figure 2 ;

[0024] Figure 4 for Figure 3 A diagram illustrating the breakdown;

[0025] Figure 5 This is a schematic diagram of the structure of an embodiment of the present invention. Figure 2 ;

[0026] Figure 6 This is a partial cross-sectional view of an embodiment of the present invention in the first air outlet in the open state;

[0027] Figure 7 This is a partial cross-sectional view of an embodiment of the present invention with the second air outlet in the open state;

[0028] Figure 8 for Figure 5 A partial structural diagram;

[0029] Figure 9 for Figure 5 Schematic diagram of the structure of the first air damper in the middle;

[0030] Figure 10 This is a schematic diagram of the airflow direction in a slightly positive pressure fresh air mode according to an embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the airflow direction in an internal circulation air purifier mode according to an embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of the airflow direction in a bidirectional fresh air exchange-exhaust mode according to an embodiment of the present invention.

[0033] The reference numerals in the accompanying drawings include: fan 1, first air inlet 2, second air inlet 3, first air outlet 4, second air outlet 5, air inlet damper 6, air inlet hood 7, driver 8, limiting rib 9, limiting pressure plate 10, air inlet pipe 11, air return pipe 12, first damper 13, second damper 14, first limiting push plate 15, second limiting push plate 16, linkage adjustment block 17, rotating shaft 18, limiting strip 19, rack 20, gear 21, drive motor 22, guide rail 23. Detailed Implementation

[0034] The present invention will be further described in detail below through specific embodiments:

[0035] like Figure 1 as well as Figure 5 As shown, this embodiment of the invention proposes a multi-mode ventilation system, including a fan 1, a first air inlet 2, a second air inlet 3, an air intake airflow reversing component, a first air outlet 4, a second air outlet 5, and an air outlet airflow reversing component.

[0036] The fan 1 is equipped with a purification module;

[0037] The first air inlet 2 is located on the air inlet section of the fan 1 and is used to connect with the outside.

[0038] The second air inlet 3 is located on the air inlet section of the fan 1 and is used to connect with the indoor environment;

[0039] The airflow reversing component is disposed between the first air inlet 2 and the second air inlet 3, and is used to enable either the first air inlet 2 or the second air inlet 3 to be connected individually.

[0040] The first air outlet 4 is located on the air outlet section of the fan 1 and is used to connect with the indoor environment;

[0041] The second air outlet 5 is located on the air outlet section of the fan 1 and is used to connect with the outside.

[0042] The airflow reversing component is disposed between the first air outlet 4 and the second air outlet 5, and is used to enable either the first air outlet 4 or the second air outlet 5 to be connected individually.

[0043] When adjusting for use:

[0044] The first operating mode is the slightly positive pressure fresh air mode (e.g., Figure 10 In this mode, the air intake and exhaust reversing components are adjusted to open the first air intake 2 and the first air outlet 4, and close the second air intake 3 and the second air outlet 5. Outdoor air enters the fan 1 through the first air intake 2 and is purified by the purification module. Then, the airflow flows from the first air outlet 4 into the room, and a slight positive pressure is gradually formed and maintained in the room. The original polluted air in the room is continuously diluted and discharged to the outside, achieving the purpose of replacing and purifying the indoor air with fresh air under slight positive pressure.

[0045] The second operating mode is the internal circulation air purifier mode (e.g., ...). Figure 11 In this mode, the air intake and exhaust reversing components are adjusted to open the second air intake 3 and the first air outlet 4, while closing the first air intake 2 and the second air outlet 5. The polluted indoor air enters the fan 1 through the second air intake 3 and is purified by the purification module. The air then flows back into the room through the first air outlet 4. The polluted indoor air is continuously filtered and purified by the purification module inside the fan 1, achieving the purpose of self-circulation and purification of indoor air.

[0046] The third operating mode is a two-way air exchange-exhaust mode (such as...). Figure 12 In this mode, the air intake and exhaust reversing components are adjusted to open the second air intake 3 and the second air outlet 5, while closing the first air intake 2 and the first air outlet 4. The polluted indoor air is purified by the purification module inside the fan 1 at the second air intake 3, and then the airflow flows to the outside from the second air outlet 5. The polluted indoor air is continuously discharged to the outside by the fan 1, thus achieving the purpose of purifying the indoor air.

[0047] This multi-mode ventilation system mainly consists of a fan 1, a purification module, an inlet airflow reversing component, and an outlet airflow reversing component. By cooperating with the inlet and outlet airflow reversing components, the conduction state of the first air inlet 2, the second air inlet 3, the first air outlet 4, and the second air outlet 5 can be adjusted to achieve three modes: micro-positive pressure fresh air mode, internal circulation air purifier mode, and bidirectional airflow fresh air-exhaust mode. This enriches the functions and has a relatively low cost. At the same time, an airflow channel is formed inside the fan 1 to avoid the problem of fresh air that has just been introduced into the room being directly exhausted to the outside due to the close distance between the air inlet and the exhaust outlet.

[0048] The purification module can be a filter, etc.

[0049] like Figure 2 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the present invention, in the multi-mode ventilation system, the first air inlet 2 and the second air inlet 3 are both disposed on the air inlet shroud 7 of the air inlet section of the fan 1 and are arranged on the same plane. The air inlet airflow reversing component includes an air inlet damper 6, which is rotatably disposed on the air inlet shroud 7 and is used to seal the first air inlet 2 or the second air inlet 3.

[0050] In this embodiment:

[0051] The first air inlet 2 and the second air inlet 3 are both circular holes, and the air intake damper 6 is a corresponding circular block. The shapes of the first air inlet 2, the second air inlet 3 and the air intake damper 6 are not limited to these, as long as the air intake damper 6 can completely cover the first air inlet 2 and the second air inlet 3 respectively for sealing.

[0052] Based on the above solution:

[0053] The edge of the air intake damper 6 extends outward to form a transmission protrusion. The transmission protrusion is detachably connected to a driver 8 disposed inside the air intake shroud 7. The air intake shroud 7 is provided with two spaced-apart limiting ribs 9. The transmission protrusion rotates between the two limiting ribs 9, and when the transmission protrusion rotates and abuts against either limiting rib 9, the air intake damper 6 completely covers the first air intake 2 or the second air intake 3.

[0054] Here: The transmission protrusion is an isosceles triangle, with one side connected to the edge of the air intake damper 6 and coplanar. The corner opposite the side of the transmission protrusion connected to the air intake damper 6 connects to the actuator 8. The actuator 8 provides power to rotate the transmission protrusion. When the transmission protrusion abuts against one of the limiting ribs 9, the actuator 8 stops, and the air intake damper 6 completely covers and seals the first air intake 2, at which point the second air intake 3 is open. The actuator 8 drives the transmission protrusion to rotate in the opposite direction, causing the air intake damper 6 to move in the opposite direction. When the transmission protrusion abuts against the other limiting rib 9, the actuator 8 stops, and the air intake damper 6 completely covers and seals the second air intake 3, at which point the first air intake 2 is open. The cooperation between the two limiting ribs 9 and the transmission protrusion improves the accuracy of the fit between the air intake damper 6 and the first air intake 2 or the second air intake 3.

[0055] Furthermore, the driver 8 is connected to the transmission protrusion key, and the air inlet cover 7 is provided with a limiting pressure plate 10 that cooperates with the transmission protrusion. A limiting space is formed between the middle of the limiting pressure plate 10 and the air inlet cover 7, allowing the transmission protrusion to pass through and rotate.

[0056] In this embodiment:

[0057] The driver 8 can be a motor, which is mounted on the outer wall of the air inlet shroud 7. The motor's output shaft freely passes through the air inlet shroud 7 to connect with the keyed transmission protrusion. Because the driver 8 and the transmission protrusion are connected by a key, it is convenient to connect or disconnect, but the stability after connection is not very strong. Therefore, a limiting pressure plate 10 is used to improve the stability of the connection between the driver 8 and the transmission protrusion. The limiting space provides space for the rotation of the transmission protrusion and also further limits its movement, thereby improving the accuracy of the transmission protrusion during rotation adjustment. Specifically, the two ends of the limiting pressure plate 10 are fixedly connected to the inner wall of the air inlet shroud 7 with screws and fit snugly. The middle part of the limiting pressure plate 10 protrudes away from the air inlet shroud 7 to form the limiting space.

[0058] Specifically, the air intake damper 6 is located inside the air intake shroud 7 to cover and seal the air outlet of the first air intake 2 or the air outlet of the second air intake 3; and an air intake pipe 11 is connected to the air intake end of the first air intake 2, the air intake pipe 11 is located outside the air intake shroud 7, and the second air outlet 5 is connected to the air intake pipe 11 by a return air pipe 12 (e.g., Figure 1 When the multi-mode ventilation system is adjusted to the bidirectional fresh air exchange-exhaust mode, the indoor polluted air is purified by the purification module from the second air inlet 3 and the fan 1. Then the airflow flows from the second air outlet 5 into the return air pipe 12 and is discharged to the outside from the air inlet 11.

[0059] like Figure 1 as well as Figure 5-9As shown, according to another embodiment of the present invention, in the multi-mode ventilation system, a first damper 13 is slidably arranged at the first air outlet 4, and a second damper 14 is rotatably arranged at the second air outlet 5; the airflow reversing linkage adjustment component includes a first limit adjustment part, a second limit adjustment part, and a linkage adjustment part.

[0060] The first limit adjustment part is disposed on the first air damper 13;

[0061] The second limit adjustment part is disposed on the first damper 13 and is arranged at intervals from the first limit adjustment part along the moving direction of the first damper 13;

[0062] The linkage adjustment unit is connected to the second damper 14 and is located between the first limit adjustment unit and the second limit adjustment unit;

[0063] When the first damper 13 moves, it drives the linkage adjustment unit and causes the second damper 14 to rotate through the cooperation of the first limit adjustment unit and the second limit adjustment unit.

[0064] In this embodiment:

[0065] For example, the first air outlet 4 is arranged facing upwards, and the second air outlet 5 is arranged facing left. The first damper 13 slides horizontally to seal or allow passage of the first air outlet 4. The top of the second damper 14 is rotatably connected to the second air outlet 5 via a pivot 18, and the second damper 14 is arranged vertically when sealing the second air outlet 5. Figure 6 When the first damper 13 is slidable to open the first air outlet 4, the second limit adjustment part cooperates with the linkage adjustment part to rotate the second damper 14, thereby sealing the second air outlet 5; Figure 7 When the first damper 13 slides in the reverse direction to seal the first air outlet 4, the first limit adjustment part and the linkage adjustment part cooperate to make the second damper 14 rotate in the reverse direction, and the second air outlet 5 is opened.

[0066] Based on the above solution:

[0067] The first limiting adjustment part is a first limiting push plate 15 fixedly connected to the first damper 13, and the first limiting push plate 15 has an adjustment slope that cooperates with the linkage adjustment part to link together.

[0068] The second limit adjustment part is a second limit push plate 16 fixedly connected to the first damper 13. The free end of the second limit push plate 16 cooperates with the linkage adjustment part to link together.

[0069] The linkage adjustment unit is a linkage adjustment block 17 connected to the rotation connection of the second damper 14. The linkage adjustment block 17 is located between the first limit push plate 15 and the second limit push plate 16 for linkage.

[0070] Specifically, the first limiting push plate 15 can be integrally formed or welded to the side of the first damper 13 facing the first air outlet 4, and a weight reduction hole can be opened in the middle of the first limiting push plate 15; when the first damper 13 is slid to open the first air outlet 4, the adjusting slope on the first limiting push plate 15 cooperates with the linkage adjusting part to make the second damper 14 rotate, and the second damper 14 seals the second air outlet 5.

[0071] The second limiting push plate 16 can be integrally formed or welded to the side of the first damper 13 facing the first air outlet 4; when the first damper 13 is slid in the opposite direction to seal the first air outlet 4, the second limiting push plate 16 cooperates with the linkage adjustment part to make the second damper 14 rotate in the opposite direction and the second air outlet 5 opens.

[0072] The linkage adjustment block 17 can be integrally formed or welded to the rotating connection of the second damper 14, and the linkage adjustment block 17 and the second damper 14 are arranged on the same plane. The linkage adjustment block 17, the second damper 14, and the rotating shaft 18 cooperate to form a swing rod structure centered on the rotating shaft 18. When the first damper 13 is slid to open the first air outlet 4, the first damper 13 moves for a period of time, and then the adjusting slope on the first limit push plate 15 contacts the linkage adjustment block 17, so that the second damper 14 rotates around the rotating shaft 18, and the second damper 14 seals the second air outlet 5. When the first damper 13 is slid in the opposite direction to seal the first air outlet 4, the first limit push plate 15 disengages from the linkage adjustment block 17, and then the first damper 13 moves for a period of time, and then the second limit push plate 16 contacts the linkage adjustment block 17, so that the second damper 14 rotates in the opposite direction around the rotating shaft 18, and the second air outlet 5 is opened.

[0073] It is worth noting that: the adjusting ramp is arranged along the moving direction of the first damper 13, and when the first limiting push plate 15 abuts against each other to cause the linkage adjusting block 17 to rotate and drive the second damper 14 to open, the rotation connection point of the second damper 14 is located in the middle of the adjusting ramp, and at this time, the projection of the free end of the linkage adjusting block 17 on the second limiting push plate 16 is located in the middle of the second limiting push plate 16. That is, as Figure 7 As shown, with the first air outlet 4 sealed and the second air outlet 5 fully open, the free end of the linkage adjusting block 17 is located at the high point of the adjusting slope, the rotating shaft 18 is located in the middle of the adjusting slope, and the height of the free end of the linkage adjusting block 17 is higher than the height of the second limiting push plate 16. This design ensures that during the movement of the first air damper 13, the linkage adjusting block 17 can rotate smoothly between the first limiting push plate 15 and the second limiting push plate 16, allowing the linkage process to proceed stably.

[0074] To further improve the stability of the second damper 14 during the opening and closing process, a limiting strip 19 can be provided on the side wall of the second air outlet 5, which is arranged opposite to the rotating shaft 18. When the second limiting push plate 16 drives the second damper 14 to rotate to seal the second air outlet 5, the free end of the second damper 14 is restricted by the limiting strip 19 and will not cross the second air outlet 5. The second damper 14 can maintain a good seal on the second air outlet 5.

[0075] like Figure 1 as well as Figure 5-9 As shown, according to another embodiment of the present invention, in the multi-mode ventilation system, the first damper 13 is slidably arranged at the first air outlet 4 by an opening and closing control component, the opening and closing control component including a rack 20 and a gear 21.

[0076] The rack 20 is arranged at the first air outlet 4 along the sliding direction of the first damper 13;

[0077] The gear 21 is rotatably mounted on the first damper 13 and meshes with the rack 20.

[0078] In this embodiment:

[0079] The rack 20 is specifically fixed on the volute of the fan 1, and a drive motor 22 is fixedly connected to the first damper 13 by bolts. The drive motor 22 is connected to the gear 21 to drive the gear 21 to rotate forward or backward. The rotating gear 21 cooperates with the rack 20 to make the first damper 13 slide so that the first air outlet 4 can be opened or sealed.

[0080] In order to make the sliding of the first damper 13 more stable, a guide rail 23 is also provided between the first damper 13 and the first air outlet 4, which is arranged along the sliding direction of the first damper 13.

[0081] Here, there are two guide rails 23 distributed on both sides of the first damper 13 to guide the movement of the first damper 13, so as to make the movement adjustment of the first damper 13 more stable.

[0082] According to another embodiment of the present invention, the air conditioner includes a multi-mode ventilation system according to any of the above embodiments.

[0083] During adjustment:

[0084] The first operating mode is the slightly positive pressure fresh air mode (e.g., Figure 10In this mode, the drive motor 22 and driver 8 are operated by pressing buttons 1 and 2 on the air conditioner or buttons 1 and 2 on the remote control that works with the air conditioner. This opens the first air inlet 2 and the first air outlet 4, and closes the second air inlet 3 and the second air outlet 5. Outdoor air enters the fan 1 through the first air inlet 2 and is purified by the purification module. Then, the airflow flows from the first air outlet 4 into the room, and a slight positive pressure is gradually formed and maintained in the room. This continuously dilutes the original polluted air in the room and discharges it to the outside, achieving the purpose of replacing and purifying the indoor air with fresh air under slight positive pressure.

[0085] The second operating mode is the internal circulation air purifier mode (e.g., ...). Figure 11 In this mode, the drive motor 22 and the driver 8 are operated by pressing buttons 1 and 2 on the air conditioner or buttons 1 and 2 on the remote control that works with the air conditioner. This causes the second air inlet 3 and the first air outlet 4 to open, and the first air inlet 2 and the second air outlet 5 to close. The polluted indoor air enters the fan 1 through the second air inlet 3 and is purified by the purification module. The air then flows back into the room through the first air outlet 4. The polluted indoor air is continuously filtered and purified by the purification module inside the fan 1, achieving the purpose of self-circulation and purification of indoor air.

[0086] The third operating mode is a two-way air exchange-exhaust mode (such as...). Figure 12 In this mode, the drive motor 22 and driver 8 are operated by pressing buttons 1 and 2 on the air conditioner or buttons 1 and 2 on the remote control that works with the air conditioner. This opens the second air inlet 3 and the second air outlet 5, while closing the first air inlet 2 and the first air outlet 4. The polluted indoor air is purified by the purification module inside the fan 1 at the second air inlet 3. The airflow then flows from the second air outlet 5 into the return air pipe 12 and is discharged to the outside through the air inlet pipe 11. The polluted indoor air is continuously discharged to the outside by the fan 1, thus achieving the purpose of purifying the indoor air.

[0087] exist Figure 10 , Figure 11 as well as Figure 12 The dotted line indicates the direction of airflow in the corresponding mode.

[0088] Finally, it should be noted that 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-mode ventilation system, characterized in that: include: A fan, wherein a purification module is arranged inside the fan; A first air inlet, which is arranged on the air inlet section of the fan and is used to communicate with the outside; A second air inlet, the second air inlet is arranged on the air inlet section of the fan and is used to communicate with the room; An air inlet airflow reversing component, the air inlet airflow reversing component is arranged between the first air inlet and the second air inlet, and is used to make the first air inlet or the second air inlet single-conducting; A first air outlet, which is arranged on the air outlet section of the fan and is used to communicate with the room; A second air outlet, the second air outlet is arranged on the air outlet section of the fan and is used to communicate with the outside; An air outlet air flow reversing component, the air outlet air flow reversing component is arranged between the first air outlet and the second air outlet, and is used to make the first air outlet or the second air outlet single-conducting; The first air inlet and the second air inlet are both arranged on the air inlet cover of the air inlet section of the fan and are arranged in the same plane, and the air inlet airflow reversing component includes: An air intake damper, the air intake damper is rotatably disposed on the air intake cover and is used to seal the first air inlet or the second air inlet; The first air outlet is provided with a first damper for sliding movement, and the second air outlet is provided with a second damper for rotation; the airflow reversing linkage adjustment component comprises: a first limit adjustment portion, wherein the first limit adjustment portion is arranged on the first damper; A second limit adjustment portion, the second limit adjustment portion is disposed on the first damper and is spaced apart from the first limit adjustment portion along a moving direction of the first damper; A linkage adjustment portion, the linkage adjustment portion is connected to the second damper and is located between the first limit adjustment portion and the second limit adjustment portion; When the first damper moves, the first limit adjustment part cooperates with the second limit adjustment part to drive the linkage adjustment part and drive the second damper to rotate; The first limit adjustment part is a first limit push plate fixedly connected to the first damper, and an adjustment inclined surface cooperating with the linkage adjustment part is formed on the first limit push plate; The second limit adjustment part is a second limit push plate fixedly connected to the first damper, and the free end of the second limit push plate cooperates with the linkage adjustment part to be linked; The linkage adjustment part is a linkage adjustment block connected to the rotation connection of the second damper, and the linkage adjustment block is located between the first limit push plate and the second limit push plate for linkage.

2. A multi-mode ventilation system according to claim 1, characterized in that: The edge portion of the air intake damper extends outward to form a transmission protrusion, and the transmission protrusion is detachably connected to a driver arranged in the air intake cover. The air intake cover is provided with two spaced-apart limiting ribs, and the transmission protrusion rotates between the two limiting ribs. When the transmission protrusion is rotating and abuts against any limiting rib, the air intake damper completely covers the first air inlet or the second air inlet.

3. A multi-mode ventilation system according to claim 2, characterized in that: The driver is key-connected with the transmission protrusion and a limiting pressure plate matched with the transmission protrusion is arranged on the air inlet cover, and a limiting space for the transmission protrusion to pass through and rotate is formed between the middle part of the limiting pressure plate and the air inlet cover.

4. A multi-mode ventilation system according to claim 1, characterized in that: The adjusting slope is arranged along the moving direction of the first damper and when the first limit push plate is abutted to make the linkage adjusting block rotate to drive the second damper to open, the rotation connection point of the second damper is located in the middle of the adjusting slope and at this time the projection of the free end of the linkage adjusting block on the second limit push plate is located in the middle of the second limit push plate.

5. A multi-mode ventilation system according to claim 1, characterized in that: The first damper is slidably arranged at the first air outlet through an opening and closing control component, and the opening and closing control component includes: A rack, the rack being arranged at the first air outlet along a sliding direction of the first damper; A gear is rotatably disposed on the first damper and meshes with the rack.

6. A multi-mode ventilation system according to claim 5, characterized in that: A guide rail arranged along the sliding direction of the first air door is also provided between the first air door and the first air outlet.

7. An air conditioner, characterized in that: A multi-mode ventilation system comprising any one of claims 1-6.

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