Fresh air assembly and fresh air air conditioner

Abstract

The application provides a fresh air assembly and a fresh air conditioner. The fresh air assembly comprises a fan module, an air duct shell, a first flow dividing plate and a second flow dividing plate. The air duct shell is provided with a fresh air inlet. An air duct cavity is formed in the air duct shell. The first flow dividing plate is arranged in the air duct cavity to divide the air duct cavity into a fan inlet cavity and an air inlet cavity. The fresh air inlet is communicated with the air inlet cavity. The air inlet cavity is communicated with the fan inlet cavity through a connecting air inlet. The second flow dividing plate is arranged in the air inlet cavity to divide the air inlet cavity into a first flow dividing channel and a second flow dividing channel. The air flow stroke of the first flow dividing channel is smaller than that of the second flow dividing channel. The fresh air assembly provided by the application can solve the technical problem of low fresh air inlet efficiency of the existing fresh air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and in particular to a fresh air component and a fresh air air conditioner. Background Technology

[0002] In recent years, with the introduction of fresh air conditioning systems, people have raised higher demands for indoor air quality and user experience. When users close doors and windows, people spend a long time indoors, and the indoor air circulation will become worse and worse. By using air valves to control the air dampers in fresh air components, the fresh air components can achieve different purification working modes such as air intake, air exhaust, and internal circulation, so as to achieve the effect of purifying indoor air without opening doors and windows, directly solving the pain points of user experience.

[0003] However, in existing fresh air conditioning systems, especially those where the fresh air intake channel needs to be bent, when fresh air is blown in, most of the fresh air does not immediately turn to the air outlet when it reaches the position corresponding to the air outlet. Instead, it continues to flow forward for a distance or even hits the wall before turning to the air outlet. As a result, the fresh air intake efficiency is low and the fresh air volume is small. Summary of the Invention

[0004] This application provides a fresh air component to solve the technical problem of low fresh air intake efficiency in existing fresh air conditioners.

[0005] To achieve the above objectives, the fresh air assembly proposed in this application includes a fan module, a duct housing, a first diverter plate, and a second diverter plate. The duct housing has a fresh air inlet, and a duct cavity is formed inside the duct housing. The first diverter plate is disposed inside the duct cavity to divide the duct cavity into a fan inlet cavity and an air intake cavity. The fresh air inlet communicates with the air intake cavity, and the air intake cavity is connected to the fan inlet cavity through a connecting air outlet. The second diverter plate is disposed inside the air intake cavity to divide the air intake cavity into a first diverter channel and a second diverter channel. The airflow path of the first diverter channel is shorter than that of the second diverter channel.

[0006] Optionally, in one embodiment, the width of the first branch channel is smaller than the width of the second branch channel.

[0007] Optionally, in one embodiment, the width of the first diversion channel is gradually reduced in the air inlet direction of the first diversion channel.

[0008] Optionally, in one embodiment, the duct housing includes a duct side plate, the second diverter plate has a first guide surface facing the first diverter plate, the first guide surface and the first diverter plate are both arc-shaped and at least partially parallel to each other; and / or, the second diverter plate also has a second guide surface facing the duct side plate, the second guide surface being located at the bend of the second diverter plate.

[0009] Optionally, in one embodiment, the second diverter plate is spaced apart from the fresh air inlet in the air inlet direction of the air inlet cavity; and / or, the second diverter plate is provided with an anti-turbulence section, the anti-turbulence section is located at the connecting air outlet, and the connecting air outlet is further divided into a first connecting air outlet and a second connecting air outlet, the first connecting air outlet being connected to the first diverter channel, and the second connecting air outlet being connected to the second diverter channel.

[0010] Optionally, in one embodiment, the end of the anti-turbulence section near the fan inlet cavity is inclined toward the side where the second connecting air outlet is located.

[0011] Optionally, in one embodiment, the housing is further provided with an exhaust port, which is connected to the second diversion channel, and the cross-sectional area of ​​the second diversion channel at least at the fresh air inlet is not less than the cross-sectional area of ​​the exhaust port.

[0012] Optionally, in one embodiment, the second diversion channel has a second connecting air outlet, and the housing is further provided with a first switching valve, which is movably installed in the housing and has a first position and a second position; when the first switching valve is in the first position, the exhaust port is closed, and the second connecting air outlet is connected to the fresh air outlet; when the first switching valve is in the second position, the exhaust port is open, and the second connecting air outlet is disconnected from the fresh air outlet; and / or, the air inlet cavity has a connecting air outlet, and the housing is further provided with a return air outlet and a second switching valve, which is movably installed in the housing and has a third position and a fourth position; when the second switching valve is in the third position, the return air outlet is closed, and the connecting air outlet is open; when the second switching valve is in the fourth position, the return air outlet is open, and the connecting air outlet is closed.

[0013] Optionally, in one embodiment, the second diversion channel is further provided with a rotating groove, and the rotating groove has a sealing step surface formed on one side corresponding to the second connecting air outlet; the first switching valve is rotatably installed in the rotating groove, and when the first switching valve is in the second position, the first switching valve abuts against the sealing step surface.

[0014] This application also proposes a fresh air conditioner, which includes the fresh air components described above.

[0015] The fresh air assembly provided in this application divides the air inlet cavity into a first diversion channel and a second diversion channel through a second diversion plate. The airflow path of the first diversion channel is shorter than that of the second diversion channel. Therefore, when fresh air is introduced, some fresh air can separate from other fresh air and flow alone in the first diversion channel with a shorter path, without having to flow forward a distance with other fresh air before turning to the connecting air outlet. This allows it to be blown out of the connecting air outlet and into the fan inlet cavity more quickly.

[0016] In other words, the fresh air component of this application accelerates some of the fresh air through the short first diversion channel, allowing some fresh air to be blown out of the connecting air vent and into the room more quickly. Then, the fresh air in the second diversion channel follows up, thereby shortening the time for fresh air to flow into the room as a whole, increasing the fresh air output per unit time, and thus improving the fresh air intake efficiency. This effectively solves the technical problem of low fresh air intake efficiency and thus low fresh air volume in existing fresh air air conditioners. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a partial structural schematic diagram of an embodiment of the fresh air component of this application;

[0019] Figure 2 This is a schematic diagram of the structure of one embodiment of the fresh air component of this application;

[0020] Figure 3 This is an exploded view of the structure of an embodiment of the fresh air component of this application;

[0021] Figure 4 A schematic diagram of a structure of an embodiment of the fresh air component of this application when introducing fresh air;

[0022] Figure 5 This is a schematic diagram of the structure of one embodiment of the fresh air component during exhaust.

[0023] Figure 6 This is a schematic diagram of the structure of an embodiment of the fresh air component for indoor circulation and purification according to this application;

[0024] Figure 7 A schematic diagram of another embodiment of the fresh air component of this application when introducing fresh air;

[0025] Figure 8 This is a schematic diagram of another embodiment of the fresh air assembly during exhaust.

[0026] Figure 9 This is a schematic diagram of another embodiment of the fresh air component used for indoor air circulation and purification in this application.

[0027] Explanation of icon numbers:

[0028]

[0029] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] This application provides a fresh air assembly to address the problem of low fresh air intake efficiency in existing fresh air conditioning systems. The following description, in conjunction with the accompanying drawings, will illustrate this solution.

[0032] In the embodiments of this application, please refer to Figure 1 and Figure 3 The fresh air assembly 10 includes a fan module 70, a duct housing 20, a first diverter plate 35, and a second diverter plate 40. The duct housing 20 has a fresh air inlet 31, and a duct cavity 27 is formed within it. The first diverter plate 35 is disposed within the duct cavity 27 to divide it into a fan inlet cavity 24 and an air intake cavity 30. The fresh air inlet 31 communicates with the air intake cavity 30, and the air intake cavity 30 is connected to the fan inlet cavity 24 via a connecting air outlet 32. The second diverter plate 40 is disposed within the air intake cavity 30 to divide it into a first diverter channel 33 and a second diverter channel 34. The airflow path of the first diverter channel 33 is shorter than that of the second diverter channel 34.

[0033] Among them, such as Figure 3 As shown, the fan module 70 mainly includes a volute and a centrifugal fan installed inside the volute. A fan inlet 71 is provided on the volute corresponding to the position of the centrifugal fan. The duct housing 20 is installed on the side of the volute where the fan inlet 71 is located. The shape, size, and material of the duct housing 20 are not limited. The duct housing 20 can be formed directly by injection molding from plastic, or it can be assembled from multiple parts, such as... Figure 3 As shown, the air duct housing 20 can be assembled from an upper air inlet housing 25 and a lower air inlet housing 26.

[0034] Back Figure 1 The duct housing 20 is provided with a fresh air inlet 31. The duct housing 20 is provided with a duct cavity 27 and a first diverter plate 35 that divides the duct cavity 27 into a fan inlet cavity 24 and an air intake cavity 30. The fresh air inlet 31 is connected to the air intake cavity 30, and the air intake cavity 30 is connected to the fan inlet cavity 24 through a connecting air outlet 32. The fan inlet cavity 24 is connected to the fan inlet 71 of the fan module 70. Thus, after the fan module 70 is started, outdoor fresh air can be blown into the room in sequence through the fresh air inlet 31, the air intake cavity 30, the fan inlet cavity 24, and the fan module 70.

[0035] Regarding the structure of the air inlet cavity 30, in one embodiment, as follows: Figure 1 As shown, the airflow path in the air inlet cavity 30 is bendable and has opposing inner sides 37 and outer sides 38. Specifically, the air inlet cavity 30 includes a first diverter plate 35 and a duct side plate 36 spaced apart from each other. The space between the first diverter plate 35 and the duct side plate 36 is the air inlet cavity 30. The duct side plate 36 extends to the side where the first diverter plate 35 is located, i.e., to the left. At this time, the first diverter plate 35 is located on the inner side 37 of the air inlet cavity 30, and the duct side plate 36 is located on the outer side 38 of the air inlet cavity. The fresh air inlet 31 is located between the first diverter plate 35 and the duct side plate 36 and can be connected to the fresh air duct to introduce fresh air. The connecting air outlet 32 ​​is located on the side where the first diverter plate 35 is located, i.e., on the left side, and is connected to the fan inlet cavity 24.

[0036] Based on the above-described air inlet cavity 30, after fresh air is blown in from the fresh air inlet 31, it will be turned to the left and blown out from the connecting air outlet 32 ​​under the suction of the fan. However, due to factors such as the guidance of the first half of the air inlet cavity 30, the inertia of the airflow itself, and the mutual compression between airflows, most of the fresh air will not immediately turn towards the connecting air outlet 32 ​​and be blown out when it reaches the position corresponding to the connecting air outlet 32. Instead, it will continue to flow forward for a distance and may even hit the side plate 36 of the air duct before turning towards the connecting air outlet 32. This will result in low fresh air intake efficiency and thus less fresh air volume. Therefore, in order to solve the problem of low intake efficiency, the fresh air assembly 10 of this application also includes a second diverter plate 40.

[0037] Specifically, such as Figure 1 or Figure 2As shown, the second diverter plate 40 is disposed within the air inlet cavity 30. The second diverter plate 40 extends between the fresh air inlet 31 and the connecting air outlet 32, dividing the air inlet cavity 30 into a first diverter channel 33 and a second diverter channel 34. The airflow path of the first diverter channel is shorter than that of the second diverter channel. Specifically, taking the connecting air outlet 32 ​​located to the left of the fresh air inlet 31 as an example, the second diverter plate 40 is integrally formed with the air duct housing 20. During forming, the second diverter plate 40 gradually extends from the fresh air inlet 31 to the left until it reaches the connecting air outlet 32, thereby dividing the air inlet cavity 30 into the first diverter channel 33 and the second diverter channel 34.

[0038] The space between the second diverter plate 40 and the first diverter plate 35 is the first diverter channel 33, and the space between the second diverter plate 40 and the air duct side plate 36 is the second diverter channel 34. At this time, the first diverter channel 33 is closer to the inner side 37 than the second diverter channel 34, so that the airflow path in the first diverter channel 33 is shorter. Therefore, under the same pressure difference, the airflow in the first diverter channel 33 will reach the connecting air outlet 32 ​​faster than the airflow in the second diverter channel 34, and thus reach the room faster.

[0039] Therefore, it can be understood that when the fresh air component 10 provided in this application introduces fresh air, some of the fresh air can separate from other fresh air and flow independently in the first diversion channel 33 with a shorter travel distance, without having to flow forward a distance together with other fresh air before turning to the connecting air outlet 32. Thus, compared with the fresh air component without the second diversion plate 40, the fresh air component provided in this application will have more fresh air that can be blown out of the connecting air outlet 32 ​​and enter the fan faster.

[0040] In other words, the fresh air component 10 of this application accelerates a portion of the fresh air through the first diversion channel 33, allowing some of the fresh air to be blown out of the connecting air outlet 32 ​​and into the room more quickly. Then, the fresh air in the second diversion channel 34 follows up, thereby shortening the time for the fresh air to flow into the room as a whole and increasing the fresh air output per unit time, which in turn improves the fresh air intake efficiency and effectively solves the technical problem of low fresh air intake efficiency and thus low fresh air volume in existing fresh air air conditioners.

[0041] Furthermore, in another embodiment, such as Figure 1As shown, the width of the first diversion channel is smaller than the width of the second diversion channel, meaning the ventilation volume of the second diversion channel 34 is greater than that of the first diversion channel 33. During ventilation, the second diversion channel 34 serves as the main air duct, and the first diversion channel 33 serves as the auxiliary air duct. Most of the introduced fresh air is blown along the second diversion channel 34 to the connecting air outlet 32, while a small portion is blown along the first diversion channel 33 to the connecting air outlet 32. It can be understood that if the average width of the first diversion channel 33 is equal to or greater than the average width of the second diversion channel 34, then some fresh air within the first diversion channel 33 will "continue to flow forward for a distance or even hit a wall before turning towards the connecting air outlet 32." This portion of fresh air may drive other fresh air that could have directly turned forward to continue flowing, or it may hit a wall and turn back, affecting the flow of other fresh air towards the connecting air outlet 32, thus resulting in a less significant improvement in fresh air intake efficiency. Therefore, making the average width of the first diversion channel 33 smaller than the average width of the second diversion channel 34 can more significantly improve the fresh air intake efficiency.

[0042] Optionally, in one embodiment, such as Figure 2 As shown, in the air inlet direction of the first diversion channel 33, the width of the first diversion channel 33 gradually decreases, that is, the width of the first diversion channel 33 becomes smaller and smaller. According to Bernoulli's principle that "the position velocity is smaller for larger pipe diameters and larger for smaller pipe diameters," the fresh air flowing in the first diversion channel 33 becomes smaller the closer it is to the connecting air outlet 32, the faster the fresh air velocity, and thus the less time it takes to blow out of the connecting air outlet 32 ​​and into the room, which further improves the fresh air intake efficiency and increases the fresh air volume.

[0043] In specific implementation, to achieve the gradual narrowing of the width of the first diversion channel 33, optionally, in one embodiment, as follows: Figure 2 As shown, the air inlet cavity 30 includes a first diverter plate 35 and an air duct side plate 36 spaced apart, forming a first diverter channel 33 between the first diverter plate 35 and the second diverter plate 40; in the air inlet direction of the first diverter channel 33, the first diverter plate 35 gradually tilts towards the second diverter plate 40. It can be understood that by tilting the first diverter plate 35 towards the second diverter plate 40, not only can the width of the first diverter channel 33 gradually decrease, but the width of the second diverter channel 34 will not be affected. Of course, depending on the actual situation, the second diverter plate 40 can also tilt towards the first diverter plate 35, or the first diverter plate 35 and the second diverter plate 40 can tilt towards each other.

[0044] Optionally, in one embodiment, such as Figure 2As shown, the air duct housing 20 also includes a connecting wall 21, which extends from the fresh air inlet 31 in a direction away from the air duct side plate 36; the first diverter plate 35 has an air inlet end 351 and an air outlet end 352, the air outlet end 352 is located at the connecting air inlet 32, the air inlet end 351 is connected to the connecting wall 21 and is spaced apart from the fresh air inlet 31. Specifically, taking the connecting air vent 32 located to the left of the fresh air vent 31 as an example, one end of the connecting wall 21 is connected to the left side of the fresh air vent 31, and the other end extends to the left. The air inlet end 351 of the first diverter plate 35 is connected to the connecting wall 21 and is spaced apart from the fresh air vent 31. That is, the first diverter plate 35 is tilted towards the second diverter plate 40 by the air outlet end 352 being offset from the second diverter plate 40. This can avoid the problem that the average width of the first diverter channel 33 becomes very small after the first diverter plate 35 is tilted towards the second diverter plate 40, thus ensuring the air volume in the first diverter channel 33.

[0045] Optionally, in one embodiment, such as Figure 1 As shown, the air inlet cavity 30 is also provided with an air duct bottom plate 39, and the first diverter plate 35 and the second diverter plate 40 are both provided on the air duct bottom plate 39; the air duct bottom plate 39 is provided with an air outlet inclined side 391 at the connecting air outlet 32, and the end of the air outlet inclined side 391 connected to the first diverter plate 35 is inclined toward the side where the fan air inlet cavity 24 is located, so that the connecting air outlet 32 ​​is inclined.

[0046] The duct base plate 39 is integrally formed with the duct housing 20. Alternatively, the duct base plate 39 and the volute of the fan module 70 can be integrally formed according to actual needs. After assembly, the first diverter plate 35, the second diverter plate 40, and the duct side plate 36 only need to be tightly fitted to the duct base plate 39. To simplify the process, in this embodiment, both the first diverter plate 35 and the second diverter plate 40 are disposed on the duct base plate 39 and integrally formed.

[0047] The bottom plate 39 of the air duct is provided with an outlet inclined side 391 at the connecting air outlet 32. This outlet inclined side 391 is the boundary between the air inlet cavity 30 and the fan inlet cavity 24. When fresh air blows to the outlet inclined side 391, it enters the fan inlet cavity 24 from the air inlet cavity 30. In this embodiment, the end of the outlet inclined side 391 connected to the first diverter plate 35 is inclined towards the side where the fan inlet cavity 24 is located, so that the connecting air outlet 32 ​​is inclined towards the side where the fan inlet cavity 24 is located, thereby increasing the cross-sectional area of ​​the connecting air outlet 32. This not only increases the fresh air volume, but also avoids the situation where the airflow in the first diverter channel 33 and the airflow in the second diverter channel 34 are too small at the connecting air outlet 32, resulting in large turbulence.

[0048] Optionally, in one embodiment, such as Figure 1 As shown, the air inlet cavity 30 includes a first diverter plate 35 and a duct side plate 36 spaced apart. A first diverter channel 33 is formed between the first diverter plate 35 and the second diverter plate 40, and a second diverter channel 34 is formed between the duct side plate 36 and the second diverter plate 40. The second diverter plate 40 has a first guide surface 41 facing the first diverter plate 35. Both the first guide surface 41 and the first diverter plate 35 have an arc-shaped structure and are parallel to each other. This can greatly reduce the resistance of fresh air in the first diverter channel 33, so that fresh air can be blown to the connecting air outlet 32 ​​and into the room more quickly.

[0049] Optionally, in another embodiment, it remains as follows Figure 1 As shown, the second diversion plate 40 also has a second guide surface 42 facing the duct side plate 36, and the second guide surface 42 is located at the bend of the second diversion plate 40. Specifically, in this embodiment, the duct side plate 36 includes a first segment 361 and a second segment 362 connected in sequence. The first segment 361 is approximately parallel to the first diversion plate 35, and the fresh air inlet 31 is located between the first segment 361 and the first diversion plate 35. The second segment 362 extends to the left from the first segment 361, and the connecting air outlet 32 ​​is located between the first diversion plate 35 and the second segment 362. The overall extension direction of the second diversion plate 40 is adapted to the duct side plate 36, and the bend of the second diversion plate 40 corresponds to the connection between the first segment 361 and the second segment 362. Therefore, when the second guide surface is set at the bend of the second diversion plate 40, it is beneficial to guide the fresh air in the second diversion channel 34 to turn towards the connecting air outlet 32 ​​more quickly and effectively, thereby improving the fresh air intake efficiency.

[0050] Optionally, in one embodiment, such as Figure 1 As shown, in the air inlet direction of the air inlet cavity 30, the second diverter plate 40 is spaced apart from the fresh air inlet 31. This can extend the travel distance of the fresh air before it enters the first diverter channel 33, ensuring the amount of fresh air entering the first diverter channel 33 and avoiding the situation where the width of the first diverter channel 33 is small, resulting in a small amount of fresh air entering.

[0051] Optionally, in another embodiment, such as Figure 1 or Figure 2 As shown, the second diverter plate 40 further divides the connecting air vent 32 into a first connecting air vent 321 and a second connecting air vent 322. The first connecting air vent 321 is connected to the first diverter channel 33, and the second connecting air vent 322 is connected to the second diverter channel 34. This design ensures that the fresh air blowing from the first diverter channel 33 and the fresh air blowing from the second diverter channel 34 will not collide or mix, thereby reducing turbulence and air loss, improving fresh air intake efficiency, and ensuring the fresh air volume.

[0052] Typically, in a fresh air conditioning system with exhaust function, the air inlet cavity 30 is used not only for introducing fresh air but also for exhausting air, thus eliminating the need for a separate exhaust duct, simplifying the air conditioning structure, and reducing costs. The fresh air component 10 in this embodiment can also be used in a fresh air conditioning system with exhaust function, for example, in one embodiment... Figure 1 or Figure 2 As shown, the air duct housing 20 is also provided with an exhaust port 22, which communicates with the second diversion channel 34. The width of the second diversion channel 34, at least at the fresh air inlet 31, is not less than the width of the exhaust port 22. Specifically, in this embodiment, as... Figure 1 As shown, the duct side panel 36 includes a first section 361 and a second section 362 connected in sequence. The first section 361 is approximately parallel to the first diversion plate 35. The fresh air inlet 31 is located between the first section 361 and the first diversion plate 35. The second section 362 extends to the left from the first section 361, and the connecting air outlet 32 ​​is located between the first diversion plate 35 and the second section 362. The exhaust outlet 22 is located on the second section 362 and close to the first section 361. At this time, the exhaust outlet 22 is connected to the second diversion channel 34, so that when the fresh air air conditioner needs to realize the exhaust function, it can exhaust air to the outside through the second diversion channel 34. In order to avoid the second diversion plate 40 affecting the exhaust air volume, this embodiment also ensures that the distance between the second diversion plate 40 and the air duct side plate 36 at the fresh air inlet 31 is not less than the width of the exhaust outlet 22. That is, the cross-sectional area of ​​the second diversion channel 34 at the fresh air inlet 31 is not less than the cross-sectional area of ​​the exhaust outlet 22, thereby ensuring that the air discharged from the exhaust outlet 22 can be discharged to the outside through the second diversion channel 34.

[0053] It should be noted that the exhaust vent 22 can be connected to the fan inlet 71, for example, in one embodiment. Figures 3 to 9 The fresh air assembly 10 of this application also includes a lift switch assembly 72 and a filter assembly 73. The fan module 70 has a fan inlet 71, a fan outlet 71, and an air outlet cavity communicating with the fan inlet 71. The lift switch assembly 72 includes a housing, an air passage formed within the housing, and a lift cover 721 movably installed within the housing. During assembly, as... Figures 4 to 9 As shown in any of the figures, the filter assembly 73 and the duct housing 20 are installed at the fan inlet 71. The housing of the lifting switch assembly 72 is installed at the exhaust port 22 and extends across to the side where the air outlet is located. The air passage inside the housing connects to the exhaust port 22, the air outlet, and the room, thus connecting the exhaust port 22 with the fan inlet 71, allowing the fresh air assembly 10 to exhaust air through the second diversion channel 34. Furthermore, when exhaust is not required, the exhaust port 22 can simply be closed using a valve.

[0054] Optionally, in one embodiment, such as Figure 1As shown, the second diversion plate 40 is provided with an anti-turbulence section 43, which is located at the connecting air outlet 32. The anti-turbulence section 43 further divides the connecting air outlet 32 ​​into a first connecting air outlet 321 communicating with the first diversion channel 33, and a second connecting air outlet 322 communicating with the second diversion channel 34. Figures 4 to 9 As shown in any figure, a first switching valve 50 is also provided inside the air duct housing 20. The first switching valve 50 is movably installed inside the air duct housing 20 and has a first position and a second position; as shown in the figure. Figure 4 or Figure 7 As shown, when the first switching valve 50 is in the first position, the exhaust port 22 is closed, and the second connecting air port 322 is connected to the fresh air port 31. At this time, the fresh air air conditioner can realize the fresh air function; Figure 5 or Figure 8 As shown, when the first switching valve 50 is in the second position, the exhaust port 22 is open, and the second connecting air port 322 is disconnected from the fresh air port 31. At this time, the fresh air air conditioner can realize the exhaust function. Therefore, by switching the first switching valve 50, the fresh air function and the exhaust function can be quickly switched, which is very convenient and fast.

[0055] Optionally, in one embodiment, such as Figure 1 As shown, the anti-turbulence section 43 is inclined towards the side where the second connecting air port 322 is located at one end near the fan inlet cavity 24, which can increase the cross-sectional area of ​​the first connecting air port 321, avoid the first connecting air port 321 being too small and resulting in a small air volume, and thus ensure the air volume of the first diversion channel 33.

[0056] Furthermore, such as Figures 4 to 9 As shown in any figure, the duct housing 20 is also provided with a return air inlet 23 and a second switching valve 60. The second switching valve 60 is movably installed inside the duct housing 20 and has a third position and a fourth position; as shown in the figure. Figure 4 or Figure 7 As shown, when the second switching valve 60 is in the third position, the return air vent 23 is closed and the connecting air vent 32 is open. At this time, the fresh air air conditioner used in the fresh air assembly 10 of this application can realize the fresh air function; as Figure 6 or Figure 9 As shown, when the second switching valve 60 is in the fourth position, the return air vent 23 is open and the connecting air vent 32 is closed. At this time, the fresh air air conditioner used in the fresh air component 10 of this application can realize the indoor circulation and purification function.

[0057] In summary, when the fresh air component 10 of this application is applied to a fresh air conditioning system, it enables the system to switch between fresh air function, exhaust function, and indoor circulation and purification function. Specifically, taking the above-mentioned fresh air component 10 structure, which includes the fan module 70 and the lifting switch assembly 72, as an example, as follows... Figure 4 or Figure 7 As shown, when the fresh air function is required, the first switching valve 50 is switched to the first position and the exhaust port 22 is closed, the second switching valve 60 is switched to the third position and the return air port 23 is closed, and at the same time the lifting cover 721 of the lifting switch assembly 72 is raised.

[0058] like Figure 5 or Figure 8 As shown, when the exhaust function is required, the first switching valve 50 is switched to the second position and the exhaust port 22 is opened, the second switching valve 60 is switched to the fourth position and the return air port 23 is opened, and the lifting cover 721 of the lifting switch assembly 72 is lowered.

[0059] like Figure 6 or Figure 9 As shown, when the indoor circulation purification function is required, the first switching valve 50 is switched to the first position and the exhaust port 22 is closed, the second switching valve 60 is switched to the fourth position and the return air port 23 is opened, and at the same time the lifting cover 721 of the lifting switch assembly 72 is raised.

[0060] Optionally, in one embodiment, such as Figure 2 As shown, the second diversion channel 34 is also provided with a rotating groove 341. The rotating groove 341 has a sealing step surface 342 formed on the side corresponding to the second connecting air outlet 32232. The first switching valve 50 is rotatably installed in the rotating groove 341. When the first switching valve 50 is in the second position, the first switching valve 50 abuts against the sealing step surface 342, thereby avoiding noise, condensation and other problems caused by air leakage. The first switching valve 50 has a door panel structure, and the sealing step surface 342 is roughly annular, so that when the first switching valve 50 is in the second position, its circumference is sealed, ensuring a sealing effect.

[0061] This application also proposes a fresh air conditioner, which includes the aforementioned fresh air component 10. Since this fresh air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0062] In the above embodiments, the descriptions of each embodiment have different focuses. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0063] The fresh air components provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A fresh air component, characterized in that, include: Fan module; The air duct housing has a fresh air inlet and an air duct cavity is formed inside the air duct housing; A first diverter plate is disposed in the air duct cavity to divide the air duct cavity into a fan inlet cavity and an air intake cavity. The fresh air inlet is connected to the air intake cavity, and the air intake cavity is connected to the fan inlet cavity through a connecting air outlet. A second diverter plate is disposed inside the air inlet cavity to divide the air inlet cavity into a first diverter channel and a second diverter channel; Wherein, the airflow travel of the first diversion channel is less than the airflow travel of the second diversion channel; The second diversion plate is also provided with an anti-turbulence section, which is located at the connecting air outlet and divides the connecting air outlet into a first connecting air outlet and a second connecting air outlet. The first connecting air outlet is connected to the first diversion channel, and the second connecting air outlet is connected to the second diversion channel.

2. The fresh air assembly as described in claim 1, characterized in that, The width of the first branch channel is smaller than the width of the second branch channel.

3. The fresh air assembly as described in claim 1, characterized in that, In the air inlet direction of the first branch channel, the width of the first branch channel is gradually reduced.

4. The fresh air assembly as described in claim 1, characterized in that, The air duct housing includes air duct side plates; The second diverter plate has a first guide surface facing the first diverter plate, both the first guide surface and the first diverter plate having an arc-shaped structure and being at least partially parallel to each other; and / or, the second diverter plate also has a second guide surface facing the duct side plate, the second guide surface being located at the bend of the second diverter plate.

5. The fresh air assembly as described in claim 1, characterized in that, In the air inlet direction of the air inlet cavity, the second diverter plate is spaced apart from the fresh air inlet.

6. The fresh air assembly as described in claim 5, characterized in that, The anti-turbulence section is inclined towards the side where the second connecting air outlet is located at one end near the air inlet of the fan.

7. The fresh air assembly as described in any one of claims 1 to 6, characterized in that, The housing is also provided with an exhaust port, which is connected to the second diversion channel. The cross-sectional area of ​​the second diversion channel at least at the fresh air inlet is not less than the cross-sectional area of ​​the exhaust port.

8. The fresh air assembly as described in claim 7, characterized in that, The second diversion channel has a second connecting air outlet, and the housing is also provided with a first switching valve. The first switching valve is movably installed in the housing and has a first position and a second position. When the first switching valve is in the first position, the exhaust outlet is closed and the second connecting air outlet is connected to the fresh air outlet. When the first switching valve is in the second position, the exhaust outlet is open and the second connecting air outlet is disconnected from the fresh air outlet. And / or, the housing is further provided with a return air inlet and a second switching valve, the second switching valve being movably installed inside the housing and having a third position and a fourth position; when the second switching valve is in the third position, the return air inlet is closed and the connecting air inlet is open; when the second switching valve is in the fourth position, the return air inlet is open and the connecting air inlet is closed.

9. The fresh air assembly as described in claim 8, characterized in that, The second diversion channel is also provided with a rotating groove, and the rotating groove has a sealing stepped surface on the side corresponding to the second connecting air outlet; The first switching valve is rotatably installed in the rotating groove, and when the first switching valve is in the second position, the first switching valve abuts against the sealing step surface.

10. A fresh air conditioning system, characterized in that, Includes the fresh air assembly as described in any one of claims 1 to 9.

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