Fresh air module and air conditioner

Abstract

This application relates to a fresh air module and an air conditioner. The fresh air module includes: a housing, a fresh air inlet, a first air inlet, a second air inlet, and an air outlet. The housing includes an indoor side, an outdoor side, and a duct side. The housing also includes an upper air duct and a lower air duct, which are connected to each other via a fan. The fresh air inlet is located on the outdoor side and connects to the outside, and is connected to the upper air duct via a fresh air channel. The first air inlet is located on the outdoor side and connects to the indoor side, and is connected to the upper air duct via a first circulation air duct. The second air inlet is located on the outdoor side and connects to the indoor side, and is connected to the upper air duct via a second circulation air duct. The first air inlet and the second air inlet are spaced apart on either side of the fresh air inlet.

Description

Technical Field

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

[0002] As people's demands for indoor air quality and comfort continue to rise, the application of fresh air modules in air conditioners, as an important extension of air conditioning functions, is becoming increasingly widespread. When used in conjunction with the indoor unit of an air conditioner, fresh air modules can provide more comprehensive treatment of indoor air, effectively improving indoor air quality, and thus have attracted widespread market attention.

[0003] However, existing fresh air modules, when used in conjunction with indoor units, suffer from a significant drawback: their functionality is relatively limited, mostly offering only basic air intake and exhaust functions. In practical applications, this limitation leads to numerous problems. For instance, in northern regions prone to sandstorms, outdoor air quality deteriorates severely due to dust storms, greatly restricting the fresh air module's ability to introduce outdoor air. Current technology lacks an effective internal circulation design and cannot switch operating modes promptly, resulting in inefficient indoor air purification and failing to meet users' needs for indoor air quality during severe weather.

[0004] Meanwhile, existing fresh air modules do not adequately consider indoor temperature circulation factors when operating in fresh air mode. When the temperature difference between indoors and outdoors is too large, continuously introducing untreated fresh air at a high volume will severely affect indoor temperature stability and reduce user comfort. Furthermore, existing technology cannot reasonably control the proportion of fresh air in the airflow of the fresh air module, nor can it accurately adjust the temperature of the fresh air outlet. It fails to effectively meet users' dual needs for indoor temperature and air quality under different environmental conditions, and therefore urgently requires further improvement and optimization. Utility Model Content

[0005] This application provides a fresh air module and an air conditioner to solve the technical problems of the existing technology, such as the limited functionality of the current fresh air module and the limitation of its fresh air function during sandstorms.

[0006] This utility model provides a fresh air module, including:

[0007] The housing includes an indoor side, an outdoor side, and a duct-type unit side. The housing also includes an upper air duct and a lower air duct, which are connected to the lower air duct via a fan.

[0008] The fresh air inlet is located on the outdoor side and is connected to the outside. The fresh air inlet is connected to the upper air duct through the fresh air channel.

[0009] The first air inlet is located on the outdoor side and is connected to the indoor area. The first air inlet is connected to the upper air duct through the first circulating air duct.

[0010] The second air inlet is located on the outdoor side and is connected to the indoor area. The second air inlet is connected to the upper air duct through the second circulating air duct.

[0011] The first air inlet and the second air inlet are located on both sides of the fresh air inlet, and the first circulating air duct and the second circulating air duct are located on both sides of the fresh air duct. The first circulating air duct, the air inlet air duct and the second circulating air duct together form the upper air duct.

[0012] The lower air duct has an air outlet;

[0013] In internal circulation mode, indoor air entering through the first air inlet sequentially passes through the first circulation duct, the fan, and the lower duct, and is discharged through the air outlet; and / or

[0014] In internal circulation mode, indoor air entering through the second air inlet sequentially passes through the second circulation duct, the fan, and the lower duct, and is exhausted through the air outlet; and / or

[0015] In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the air outlet.

[0016] The air outlet includes a first air outlet located on the indoor side. Indoor air entering through the first air inlet passes sequentially through the first circulating air duct, the fan, and the lower air duct, and is discharged through the first air outlet; and / or

[0017] In internal circulation mode, indoor air entering through the second air inlet sequentially passes through the second circulation duct, the fan, and the lower duct, and is exhausted through the first air outlet; and / or

[0018] In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the first air outlet.

[0019] The air outlet includes a second air outlet located on the side of the ducted air conditioner. Indoor air entering through the first air inlet sequentially passes through the first circulating air duct, the fan, and the lower air duct, and is discharged through the second air outlet; and / or

[0020] In internal circulation mode, indoor air entering through the second air inlet sequentially passes through the second circulation duct, the fan, and the lower duct, and is discharged through the second air outlet; and / or

[0021] In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the second air outlet.

[0022] The lower-level air duct also includes a fresh air exhaust vent located on the indoor side. Indoor air entering through the first air inlet sequentially passes through the first circulating air duct, the fan, and the lower-level air duct, and is exhausted through the fresh air exhaust vent; and / or

[0023] In internal circulation mode, indoor air entering through the second air inlet sequentially passes through the second circulation duct, the fan, and the lower duct, and is discharged through the fresh air exhaust outlet; and / or

[0024] In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the fresh air exhaust outlet.

[0025] The fresh air exhaust port is located between the first air outlet and the second air outlet, and the fresh air exhaust port is arranged opposite to the second air outlet.

[0026] The housing includes a partition assembly comprising a first base plate, a second base plate, a first internal circulation baffle, and a second internal circulation baffle. The first base plate and the second base plate are sequentially connected. The first internal circulation baffle and the second internal circulation baffle are vertically inserted into the first base plate and the second base plate, forming three spaces on the first base plate and the second base plate: a fresh air duct and a first circulation air duct and a second circulation air duct respectively located on both sides of the fresh air duct. The first base plate has mounting holes for installing the fan, and the mounting holes are formed at least in the fresh air duct.

[0027] The mounting hole is formed between the fresh air duct and the first circulating air duct.

[0028] The fresh air duct has a first air valve, which is rotatably installed between the first internal circulation baffle and the second internal circulation baffle to adaptively adjust the air intake volume in the fresh air duct.

[0029] The second circulating air duct has a second air valve, which is rotatably installed between the second internal circulation baffle and the inner wall of the housing, for adaptively adjusting the air intake volume in the second circulating air duct.

[0030] The first circulating air duct has a third air valve, which is rotatably installed between the first inner circulating baffle and the inner wall of the first circulating air duct to adaptively adjust the air intake volume in the first circulating air duct.

[0031] The lower air duct has a fourth air valve, which is movably installed between the first air outlet, the second air outlet and the fresh air exhaust outlet, for adaptively adjusting the opening and closing of the first air outlet, the second air outlet and the fresh air exhaust outlet.

[0032] This utility model also provides an air conditioner, including the above-mentioned fresh air module and an indoor unit, wherein the indoor unit is matched and applied with the fresh air module to form an internal circulation mode and / or an air intake internal circulation mode.

[0033] The technical solutions provided in this application have the following advantages compared with the prior art:

[0034] The fresh air module and air conditioner provided in this application embodiment can form two layered air ducts within the fan casing. By adding a first air inlet and a second air inlet on both sides of the fresh air inlet, indoor air can be drawn into the upper air duct of the fresh air module through the first and second air inlets, and then flow to the fan through the first or second internal circulation air duct, respectively. The air then flows to the lower air duct via the fan and is discharged through the outlet. The outlet can be connected to the indoor unit or to the duct unit side. Depending on different functional requirements, the outlet can be positioned on the desired side to achieve the internal circulation function of indoor air. Alternatively, while performing internal circulation of indoor air, the fresh air inlet can be activated to introduce outdoor air, thus achieving an internal air circulation mode. In summary, this fills the gap in existing fresh air modules that cannot perform internal circulation mode. By arranging two internal circulation air ducts on both sides of the fresh air channel, the overall space utilization of the fresh air module is increased, and the air volume during internal circulation can be increased, achieving large-volume internal circulation without reducing the fresh air volume. Furthermore, by designing a two-layer air duct system, single-pipe air supply and single-pipe exhaust are achieved, eliminating the need for two separate ducts for intake and exhaust, which is beneficial for user installation. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0038] Figure 1 A schematic diagram of the overall structure of the fresh air module provided in this application embodiment. Figure 1 ;

[0039] Figure 2 A schematic diagram of the overall structure of the fresh air module provided in this application embodiment. Figure 2 ;

[0040] Figure 3 This is a structural diagram of the upper air duct and related structures in the fresh air module provided in the embodiments of this application;

[0041] Figure 4 This is a structural diagram of the lower-level air duct and related structures in the fresh air module provided in the embodiments of this application;

[0042] Figure 5 This is a schematic diagram of the structure of the partition component provided in an embodiment of this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Casing; 11. Indoor side; 12. Outdoor side; 13. Duct side; 14. Upper air duct; 15. Lower air duct; 16. Fan; 17. Partition assembly; 171. First base plate; 1711. Mounting hole; 172. Second base plate; 173. First internal circulation baffle; 174. Second internal circulation baffle; 2. Fresh air inlet; 3. First air inlet; 4. Second air inlet; 5. First circulation air duct; 6. Second circulation air duct; 7. Fresh air passage; 8. First air outlet; 9. Second air outlet; 10. Fresh air exhaust outlet; 18. First air valve; 19. Second air valve; 20. Third air valve; 21. Fourth air valve. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0047] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptions used in this text have been explained accordingly.

[0048] Currently, fresh air modules, as a new addition to air conditioners, are generally installed on the left and right sides of the unit, and rarely on the rear. They are typically installed as a separate module. With the development of fresh air conditioning systems and people's increasing pursuit of quality of life, the functions of fresh air modules are becoming increasingly diverse. Research shows that most fresh air modules on the market still offer simple air intake and exhaust functions.

[0049] This application proposes a fresh air module that achieves both air intake and exhaust while maximizing space utilization. It also adds a fresh air recirculation function and enables both direct and mixed exhaust. Addressing the limitation on the fresh air intake ratio in certain scenarios, this application combines an intake mode with / or an internal recirculation mode, allowing the fresh air module to operate even in sandstorms or other severe weather, thus expanding its application range.

[0050] refer to Figures 1-5This application provides a fresh air module, including: a housing 1, a fresh air inlet 2, a first air inlet 3, a second air inlet 4, and an air outlet. The housing 1 includes an indoor side 11, an outdoor side 12, and a duct-type side 13. The housing 1 also includes an upper air duct 14 and a lower air duct 15, which are connected via a fan 16. The fresh air inlet 2 is located on the outdoor side 12 and connects to the outside, and is connected to the upper air duct 14 via a fresh air channel 7. The first air inlet 3 is located on the outdoor side 12 and connects to the indoor side, and is connected to the upper air duct 14 via a first circulation air duct 5. The second air inlet 4 is located on the outdoor side 12 and connects to the indoor side, and is connected to the upper air duct 14 via a second circulation air duct 6. The first air inlet 3 and the second air inlet 4... The first circulating air duct 5 and the second circulating air duct 6 are spaced apart on both sides of the fresh air inlet 2, and together they form the upper air duct 14. The lower air duct 15 has the air outlet. In the internal circulation mode, the indoor air entering through the first air inlet 3 passes through the first circulating air duct 5, the fan 16 and the lower air duct 15 in sequence, and is discharged from the air outlet. In the internal circulation mode, the indoor air entering through the second air inlet 4 passes through the second circulating air duct 6, the fan 16 and the lower air duct 15 in sequence, and is discharged from the air outlet. In the suction mode, the outdoor air entering through the fresh air inlet 2 passes through the fresh air duct 7, the fan 16 and the lower air duct 15 in sequence, and is discharged from the air outlet.

[0051] In this way, by utilizing the layered air duct design, single-pipe air supply and exhaust are achieved, eliminating the need for two ducts for intake and exhaust, which is beneficial for user installation. At the same time, the internal circulation adopts a dual-air duct design, arranged on both sides of the fresh air duct, which increases the overall space utilization of the fresh air module and can increase the air volume during internal circulation, achieving a large air volume internal circulation without reducing the fresh air volume.

[0052] Specifically, the casing 1 has an independent upper air duct 14 and a lower air duct 15, which are connected by a fan 16. Outdoor fresh air enters through the fresh air inlet 2 located on the outdoor side 12, flows into the upper air duct 14 via the fresh air channel 7, then enters the lower air duct 15 via the fan 16, and is finally discharged from the outlet, achieving the suction mode. In the internal circulation mode, indoor air enters through either the first air inlet 3 or the second air inlet 4, also located on the outdoor side 12, travels along the first circulation air duct 5 or the second circulation air duct 6 to the upper air duct 14, is transported to the lower air duct 15 by the fan 16, and is finally discharged from the outlet. The first air inlet 3 and the second air inlet 4 are spaced apart on both sides of the fresh air inlet 2, and the first circulation air duct 5 and the second circulation air duct 6 are also spaced apart on both sides of the fresh air duct, together forming the upper air duct 14.

[0053] Furthermore, the layered duct design allows the module to achieve both air supply and exhaust with a single pipe. Compared to the traditional dual-pipe intake and exhaust structure, this greatly simplifies the installation process and reduces installation difficulty and costs for users. The internal circulation system adopts a dual-duct design, rationally distributed on both sides of the fresh air duct. This not only effectively improves the space utilization of the fresh air module but also significantly increases the air volume during internal circulation without affecting the fresh air volume. This meets users' needs for high-volume internal circulation, effectively improves indoor air circulation efficiency, and optimizes the user experience.

[0054] Considering one application scenario of air outlet, in the fresh air module provided in this application embodiment, the air outlet includes a first air outlet 8, which is located on the indoor side 11. Indoor air entering through the first air inlet 3 sequentially passes through the first circulating air duct 5, the fan 16, and the lower air duct 15, and is discharged through the first air outlet 8; and / or

[0055] In internal circulation mode, indoor air entering through the second air inlet 4 passes sequentially through the second circulation duct 6, the fan 16, and the lower duct 15, and is exhausted through the first air outlet 8; and / or

[0056] In the suction mode, the outdoor air entering through the fresh air inlet 2 passes sequentially through the fresh air duct 7, the fan 16 and the lower air duct 15, and is discharged through the first air outlet 8.

[0057] In this way, during the suction mode, outdoor air enters through the fresh air inlet 2 on the outdoor side 12, flows into the upper air duct 14 along the fresh air channel 7, and then enters the lower air duct 15 with the help of the fan 16, finally exiting from the first air outlet 8 on the indoor side 11, bringing fresh air into the room. In the internal circulation mode, indoor air can enter through the first air inlet 3 or the second air inlet 4 on the outdoor side 12, travel along the first circulation air duct 5 or the second circulation air duct 6 to the upper air duct 14, be propelled by the fan 16 into the lower air duct 15, and similarly exit from the first air outlet 8, achieving indoor air circulation. The first air inlet 3 and the second air inlet 4 are orderly distributed on both sides of the fresh air inlet 2, and the first circulation air duct 5 and the second circulation air duct 6 are correspondingly distributed on both sides of the fresh air duct, together forming the upper air duct 14, ensuring orderly airflow.

[0058] Furthermore, the first air outlet 8 is located on the indoor side 11, precisely matching the indoor air delivery needs. This allows both fresh air and internal circulation air to directly affect the indoor space, effectively improving the targeting and efficiency of air replacement and circulation. The layered air duct design combined with a dual-duct internal circulation system maintains the advantages of single-pipe air supply and exhaust while reducing installation complexity. It also increases the internal circulation air volume through a rational layout, satisfying both the indoor fresh air supply and rapid indoor air purification. This achieves efficient air handling within a limited space, greatly enhancing the practicality of the fresh air module and the user experience, providing a superior solution for improving indoor air quality.

[0059] Considering a second application scenario for air supply, in the fresh air module provided in this application embodiment, the air outlet includes a second air outlet 9, which is located on the duct unit side 13. Indoor air entering through the first air inlet 3 sequentially passes through the first circulating air duct 5, the fan 16, and the lower air duct 15, and is discharged through the second air outlet 9; and / or

[0060] In internal circulation mode, indoor air entering through the second air inlet 4 sequentially passes through the second circulation duct 6, the fan 16, and the lower duct 15, and is discharged through the second air outlet 9; and / or

[0061] In the suction mode, the outdoor air entering through the fresh air inlet 2 passes sequentially through the fresh air duct 7, the fan 16 and the lower air duct 15, and is discharged through the second air outlet 9.

[0062] In this way, in the suction mode, outdoor air enters through the fresh air inlet 2 on the outdoor side 12, flows along the fresh air duct 7 into the upper air duct 14, and is transported to the lower air duct 15 by the power of the fan 16, finally being discharged from the second air outlet 9 located on the duct unit side 13, thus completing the introduction of fresh air. In the internal circulation mode, indoor air can enter through either the first air inlet 3 or the second air inlet 4 on the outdoor side 12, travel along the first circulation duct 5 or the second circulation duct 6 to the upper air duct 14, enter the lower air duct 15 by the action of the fan 16, and is also discharged from the second air outlet 9, achieving indoor air circulation. The first air inlet 3 and the second air inlet 4 are symmetrically distributed on both sides of the fresh air inlet 2, and the corresponding first circulation duct 5 and second circulation duct 6 are also arranged on both sides of the fresh air duct, together forming a complete upper air duct 14 system, ensuring stable and efficient airflow transmission.

[0063] Furthermore, the second air outlet 9 is located on the duct unit side 13, bringing a new expansion to the application scenarios of the fresh air module. It can flexibly adapt to different installation and usage needs, especially suitable for scenarios where it is used in conjunction with a duct unit, achieving efficient connection with the duct system and improving the flexibility and adaptability of air delivery. At the same time, continuing the layered air duct and dual-duct internal circulation design, while ensuring single-pipe air supply and exhaust and reducing installation difficulty, the reasonable air duct layout further improves the internal circulation air volume. While meeting the requirements for introducing outdoor fresh air, it enhances the circulation and purification efficiency of indoor air, effectively improving the applicability and overall performance of the fresh air module in diverse scenarios, providing users with more targeted and efficient indoor air solutions.

[0064] Considering that the fresh air module can realize an exhaust mode, in the fresh air module provided in this application embodiment, the lower air duct 15 also has a fresh air exhaust port 10. The fresh air exhaust port 10 is located on the indoor side 11. The indoor air entering through the first air inlet 3 passes sequentially through the first circulating air duct 5, the fan 16, and the lower air duct 15, and is discharged through the fresh air exhaust port 10; and / or

[0065] In internal circulation mode, indoor air entering through the second air inlet 4 sequentially passes through the second circulation duct 6, the fan 16, and the lower duct 15, and is discharged through the fresh air exhaust outlet 10; and / or

[0066] In the suction mode, the outdoor air entering through the fresh air inlet 2 passes sequentially through the fresh air duct 7, the fan 16 and the lower air duct 15, and is discharged through the fresh air exhaust outlet 10.

[0067] Thus, the working principle of the fresh air module in this embodiment integrates multiple modes of air intake, internal circulation, and exhaust. The indoor side 11, outdoor side 12, and duct side 13 of the casing 1 form the spatial foundation, and the upper air duct 14 and lower air duct 15 are connected by a fan 16. In intake mode, outdoor fresh air enters from the fresh air inlet 2 on the outdoor side 12, flows into the upper air duct 14 through the fresh air channel 7, is driven by the fan 16 into the lower air duct 15, and is finally discharged from the fresh air exhaust outlet 10 located on the indoor side 11, introducing fresh air into the room. In internal circulation mode, indoor air can enter from the first air inlet 3 or the second air inlet 4 on the outdoor side 12, reach the upper air duct 14 along the first circulation air duct 5 or the second circulation air duct 6 respectively, and is then sent into the lower air duct 15 by the fan 16, and is also discharged from the fresh air exhaust outlet 10, realizing the circulation and purification of indoor air. In exhaust mode, indoor air enters through the first air inlet 3 or the second air inlet 4, passes through the first circulation duct 5, the second circulation duct 6, the fan 16 and the lower duct 15 in sequence, and is discharged from the fresh air exhaust vent 10 on the indoor side 11, effectively removing indoor polluted air. The orderly layout between the ducts ensures stable and efficient airflow transmission in different modes.

[0068] Furthermore, the fresh air exhaust vent 10 is located on the indoor side 11, giving the fresh air module independent exhaust capabilities. This allows the module to integrate the functions of fresh air introduction, indoor air circulation, and stale air exhaust, achieving complete indoor air replacement without additional equipment. The layered duct design combined with dual-duct internal circulation maintains the advantages of single-pipe air supply and exhaust while reducing installation complexity. The rational duct layout further improves airflow transmission efficiency, efficiently completing tasks such as introducing fresh air, circulating indoor air, and exhausting stale air. This greatly enhances the adaptability of the fresh air module in different scenarios, providing a strong guarantee for creating a healthier, more comfortable, and more efficient indoor air environment for users.

[0069] Considering the relative positions of the fresh air exhaust vent 10 to each air outlet, in the fresh air module provided in this application embodiment, the air outlet includes a first air outlet 8 and a second air outlet 9. The first air outlet 8 is located on the indoor side 11, the second air outlet 9 is located on the duct unit side 13, and the fresh air exhaust vent 10 is located between the first air outlet 8 and the second air outlet 9. The fresh air exhaust vent 10 and the second air outlet 9 are arranged opposite to each other.

[0070] In this way, the fresh air exhaust vent 10 is located between the first air outlet 8 on the indoor side 11 and the second air outlet 9 on the duct unit side 13, and is positioned opposite to the second air outlet 9. This layout optimizes the overall spatial structure, making the distribution of each air outlet more compact and reasonable, and effectively improving the space utilization rate of the fresh air module. In terms of functionality, the air outlets in different positions cooperate with the fresh air exhaust vent 10 to flexibly cope with various air handling scenarios. The first air outlet 8 can focus on indoor air circulation and fresh air introduction, the second air outlet 9 is easy to connect with the duct unit system to achieve long-distance, large-scale air delivery, and the fresh air exhaust vent 10 is centrally located to efficiently exhaust indoor stale air. The three work together to achieve integrated and efficient operation of fresh air introduction, air circulation and exhaust. Furthermore, the rational vent layout further enhances the advantages of the single-pipe air supply and exhaust design, reduces the complexity of module installation, and improves its adaptability in different building environments. Whether it is a small residential building or a large commercial space, this layout can achieve efficient air treatment, providing users with a more flexible, efficient, and convenient indoor air solution, and significantly enhancing the practicality and market competitiveness of the fresh air module.

[0071] Considering a structural scheme forming two-layer air ducts and two-sided circulating air ducts, in the fresh air module provided in this application embodiment, a partition component 17 is provided inside the housing 1. The partition component 17 includes a first base plate 171, a second base plate 172, a first internal circulation baffle 173, and a second internal circulation baffle 174. The first base plate 171 and the second base plate 172 are connected sequentially. The first internal circulation baffle 173 and the second internal circulation baffle 174 are vertically inserted on the first base plate 171 and the second base plate 172, forming three spaces on the first base plate 171 and the second base plate 172, namely a fresh air channel 7 and a first circulating air duct 5 and a second circulating air duct 6 respectively disposed on both sides of the fresh air channel 7. The first base plate 171 has a mounting hole 1711 for installing the fan 16, and the mounting hole 1711 is formed at least in the fresh air channel 7.

[0072] In this way, by sequentially connecting the first base plate 171 and the second base plate 172, and with the vertically inserted first internal circulation baffle 173 and second internal circulation baffle 174, the fresh air channel 7 and the first and second circulation air ducts 6 arranged on both sides are precisely divided, realizing the orderly layering and reasonable layout of the air ducts, greatly improving the utilization rate of the internal space of the casing 1, and making the module structure more compact and efficient. This design realizes the functional zoning of fresh air introduction and indoor air circulation, which not only ensures that fresh air and circulating air have their own paths and avoids airflow interference, effectively improving air handling efficiency, but also increases the air volume during internal circulation through the dual circulation air ducts without reducing the fresh air volume, meeting the user's demand for large-volume internal circulation. At the same time, the mounting holes 1711 on the first base plate 171 for installing the fan 16 are formed at least in the fresh air channel 7, optimizing the installation position of the fan 16, which not only facilitates the efficient connection of the fan 16 with each air duct and ensures stable airflow transmission, but also simplifies the installation process and reduces the installation difficulty and maintenance cost. Furthermore, this structural design further enhances the advantages of single-pipe air supply and exhaust, enabling the fresh air module to be flexibly adapted to different building environments. Whether in residential, commercial, or industrial spaces, it can achieve efficient and stable air treatment, significantly improving the practicality, reliability, and market competitiveness of the fresh air module, and providing users with a better indoor air solution.

[0073] Considering the scheme of connecting the first base plate 171 to the upper air duct 14 and the lower air duct 15, in the fresh air module provided in this application embodiment, the mounting hole 1711 is formed between the fresh air channel 7 and the first circulating air duct 5.

[0074] In this way, the fresh air module has its mounting hole 1711 positioned between the fresh air duct 7 and the first circulating air duct 5, achieving a solution where the first base plate 171 connects the upper air duct 14 and the lower air duct 15. This design optimizes the connection method between the fan 16 and each air duct, enabling the fan 16 to directly and efficiently drive the airflow within the fresh air duct 7 and the first circulating air duct 5, significantly reducing airflow resistance and effectively improving air handling efficiency. Furthermore, this solution allows for flexible switching and efficient coordination between fresh air introduction and indoor air recirculation, ensuring both smooth delivery of fresh air to the lower air duct 15 for exhaust and adequate recirculation of indoor air. Rapid airflow significantly increases the air volume during internal circulation without reducing the fresh air volume. From a structural optimization perspective, the special placement of the 1711 mounting hole simplifies the duct connection structure, streamlines the overall installation process, reduces installation difficulty and subsequent maintenance costs, and enhances the design advantages of single-pipe air supply and exhaust. This allows the fresh air module to be flexibly adapted to different building environments, achieving stable and efficient air treatment in both small residences and large commercial venues. This effectively improves the practicality, reliability, and market competitiveness of the fresh air module, providing users with a higher quality and more efficient indoor air solution.

[0075] Considering the adjustable air intake of the fresh air duct 7, in the fresh air module provided in this application embodiment, the fresh air duct 7 has a first air valve 18, which is rotatably installed between the first internal circulation baffle 173 and the second internal circulation baffle 174, for adaptively adjusting the air intake in the fresh air duct 7.

[0076] In this way, the fresh air module is equipped with a rotatable first air valve 18 in the fresh air duct 7 to adjust the air intake volume. The first air valve 18 can flexibly adjust the air intake volume of the fresh air duct 7 according to actual needs. Whether in a scenario with a high number of people and high air demand, or in a scenario with fewer people and low fresh air demand, it can accurately control the amount of fresh air introduced, achieving dynamic matching between the fresh air system and the usage scenario. In terms of energy saving and consumption reduction, by reasonably adjusting the air intake volume, unnecessary energy waste is avoided, equipment operating costs are reduced, and the energy utilization efficiency of the fresh air module is improved. In addition, the adjustable air intake volume can effectively balance indoor temperature and humidity, avoid indoor environmental discomfort caused by excessive or insufficient fresh air volume, and reduce the noise generated by the fan 16 due to continuous high load operation, creating a more comfortable and quiet user environment. Furthermore, the design of the first air valve 18 being installed between the first internal circulation baffle 173 and the second internal circulation baffle 174 is compact and reasonable, without taking up extra space. While ensuring the original advantages of the fresh air module, it further enhances its functionality and practicality, improves the product's competitiveness in the market, and provides users with a more intelligent, efficient, and user-friendly indoor air solution.

[0077] Considering the adjustable air intake of the second circulating air duct 6, in the fresh air module provided in this application embodiment, the second circulating air duct 6 has a second air valve 19, which is rotatably installed between the second internal circulation baffle 174 and the inner wall of the housing 1, for adaptively adjusting the air intake in the second circulating air duct 6.

[0078] In this way, the fresh air module is equipped with a rotatable second air valve 19 in the second circulation duct 6 to adjust the air intake volume. For precise air volume control, the second air valve 19 can flexibly adjust the air intake volume of the second circulation duct 6 according to actual needs such as indoor air quality and occupant activity. This allows for increased airflow when rapid air purification is needed, effectively improving indoor air quality, and reduced airflow during low-load scenarios, avoiding energy waste. From an energy-saving perspective, by rationally controlling the air intake volume of the second circulation duct 6, the fan 16 does not need to operate at continuously high power, effectively reducing equipment energy consumption, significantly reducing operating costs, and significantly improving the energy utilization efficiency of the fresh air module. Furthermore, the adjustable air intake volume avoids airflow disturbance and noise caused by excessive airflow, and also prevents poor air circulation caused by insufficient airflow, thereby maintaining stable indoor air circulation and creating a comfortable and quiet indoor environment. Furthermore, the second air valve 19 is installed between the second internal circulation baffle 174 and the inner wall of the housing 1. This layout makes full use of the internal space of the module, resulting in a compact and sophisticated structure. Without affecting the advantages of the original air duct design, it further optimizes the internal circulation function, enhances the adaptability and practicality of the fresh air module in different usage scenarios, greatly improves the product's market competitiveness, and brings users a more personalized, intelligent, and efficient indoor air circulation solution.

[0079] Considering the adjustable air intake of the first circulating air duct 5, in the fresh air module provided in this application embodiment, the first circulating air duct 5 has a third air valve 20, which is rotatably installed between the first inner circulation baffle 173 and the inner wall, for adaptively adjusting the air intake in the first circulating air duct 5.

[0080] In this way, a rotatable third air valve 20 is installed in the first circulation duct 5 of the fresh air module to adjust the air intake volume. The third air valve 20 can precisely adjust the air intake volume of the first circulation duct 5 according to dynamic needs such as indoor air quality, number of people, and activity intensity. When the indoor air is polluted and needs rapid purification, the air volume can be increased to improve circulation efficiency, while the air volume can be reduced when the indoor environment is stable to avoid redundant energy consumption. In addition, reasonable control of the air intake volume effectively reduces the load on the fan 16, reduces equipment operating energy consumption, significantly reduces long-term operating costs, and significantly improves energy utilization efficiency. Furthermore, this adjustment mechanism avoids airflow turbulence and noise interference caused by excessive air volume, while preventing poor air circulation due to insufficient air volume, ensuring continuous and stable indoor air circulation, and creating a quiet and comfortable spatial environment. In addition, the third air valve 20 is installed between the first internal circulation baffle 173 and the inner wall of the housing 1, making full use of the internal space of the module. The structure is compact and exquisite. Without compromising the advantages of the original air duct design, it further enhances the internal circulation function, significantly improves the adaptability and practicality of the fresh air module in various complex usage scenarios, enhances the product's market competitiveness, and provides users with a more intelligent, efficient and humanized indoor air circulation optimization solution.

[0081] Considering the opening and closing scheme between the fresh air exhaust port 10, the first air outlet 8, and the second air outlet 9, in the fresh air module provided in this application embodiment, the lower air duct 15 has a fourth air valve 21. The fourth air valve 21 is movably installed between the first air outlet 8, the second air outlet 9, and the fresh air exhaust port 10, and is used to adaptively adjust the opening and closing of the first air outlet 8, the second air outlet 9, and the fresh air exhaust port 10.

[0082] In this way, by setting a movable fourth air valve 21 in the lower air duct 15 to adjust the opening and closing of the first air outlet 8, the second air outlet 9, and the fresh air exhaust outlet 10, a multi-dimensional technological breakthrough has been achieved. The fourth air valve 21 can precisely control the opening and closing status of each air outlet according to different usage scenarios and needs. For example, when only fresh air needs to be introduced, the fresh air exhaust outlet 10 and the second air outlet 9 can be closed, so that the fresh air is directionally discharged from the first air outlet 8; when used in conjunction with a ducted air conditioner, the second air outlet 9 can be opened and other air outlets can be adjusted to achieve efficient air delivery. This flexible adjustment mechanism significantly enhances the adaptability of the fresh air module to diverse scenarios such as residential, commercial, and industrial applications. In addition, reasonable control of the opening and closing of the air outlets can avoid unnecessary airflow loss, reduce the idling or ineffective operation of the fan 16, and effectively reduce equipment energy consumption and operating costs. Meanwhile, this design optimizes airflow organization, avoiding airflow turbulence caused by multiple vents opening simultaneously. It ensures air flows along the optimal path, improving air handling efficiency and reducing noise from airflow conflicts, creating a quiet and comfortable indoor environment for users. Furthermore, the compact layout of the fourth air valve 21, installed between the three vents, fully utilizes the module's internal space. Without altering the advantages of the original duct structure, it further enhances the integration and practicality of the fresh air module, greatly strengthening the product's market competitiveness and providing users with a more intelligent, efficient, and personalized indoor air solution.

[0083] This application embodiment also provides an air conditioner, including the aforementioned fresh air module, and also including an indoor unit, wherein the indoor unit is matched and applied with the fresh air module to form an internal circulation mode and / or an air intake internal circulation mode.

[0084] In this way, the fresh air module's intake mode efficiently introduces fresh outdoor air. Combined with the indoor unit's cooling and heating functions, it can improve indoor air quality while regulating indoor temperature and humidity. The internal circulation mode and intake internal circulation mode accelerate indoor air circulation, achieving rapid purification and temperature and humidity regulation, effectively preventing problems such as stuffiness and stuffiness caused by prolonged closure of the indoor air. Furthermore, the deep compatibility between the fresh air module and the indoor unit allows the air conditioner to flexibly switch operating modes according to different scenarios. For example, in the high temperatures of summer, the intake internal circulation mode can be activated to quickly cool the air while introducing fresh air, ensuring both air freshness and a cool feeling. In the cold winter environment, the internal circulation mode can also accelerate the circulation of hot indoor air, improving heating efficiency. This collaborative work not only enriches the functions of the air conditioner but also optimizes energy utilization efficiency, reduces ineffective operation of the equipment, and lowers energy consumption and operating costs. In addition, this design greatly enhances the user experience. Users do not need to purchase separate fresh air equipment. One air conditioner can meet the dual needs of temperature and humidity regulation and air purification, simplifying the equipment installation and operation process and providing users with a more convenient, comfortable and efficient indoor environment solution, significantly enhancing the product's market competitiveness and practicality.

[0085] In summary, to facilitate the implementation of the fresh air module and air conditioner solutions provided in this application, the following solutions are provided as examples.

[0086] The embodiments of this application adopt an internal circulation dual-air duct design, with the internal circulation air duct next to the fresh air duct. On the one hand, this can increase the air volume when the fresh air module is circulating internally, and on the other hand, this air duct design can make the fresh air ratio of the fresh air module controllable.

[0087] Furthermore, the internal circulation ducts are symmetrically arranged on both sides of the fresh air module, making the overall fresh air volume control more accurate. If the distances from the centrifugal fan 16 are uneven, it would be difficult to achieve the desired control effect. Therefore, in this embodiment, the distances from the centrifugal fan 16 are symmetrical and equal. The fresh air module's exhaust duct is located at the bottom layer, and one side wall of the duct is replaced by the centrifugal fan 16 volute, effectively utilizing the space of the fresh air module while also leaving space for the internal circulation duct. The fresh air ratio control is divided into four levels: low ratio fresh air mode, medium ratio fresh air mode, high ratio fresh air mode, and full ratio fresh air mode. Since the internal circulation damper is designed inside the fresh air module, the internal circulation air inlet needs to be equipped with a rodent-proof mesh or a coarse filter, which is not shown in the figure.

[0088] In this application, the partition component 17 is designed as an integrated unit, which simplifies the number of parts and facilitates installation and disassembly. Furthermore, an adjustable fresh air volume ratio structure is incorporated, allowing for controllable fresh air volume entering the fresh air module.

[0089] In summary, the fresh air module provided in this application embodiment can simultaneously achieve five modes: fresh air, mixed air, exhaust, internal circulation, and internal circulation + intake. This ensures that the fresh air module can still operate normally in inclement weather, guaranteeing the user experience. When there is a significant temperature difference between the outdoor fresh air and the indoor air during exhaust, a mixed air supply mode can be used to avoid large fluctuations in indoor temperature, thus affecting comfort. Alternatively, the proportion of fresh air can be reduced to minimize temperature fluctuations caused by fresh air while still maintaining sufficient airflow from the fresh air module, maximizing comfort.

[0090] The fresh air module in this embodiment has four air inlets: a fresh air inlet 2, an internal circulation air inlet 1, an internal circulation air inlet 2, and an exhaust air inlet. It also has three air outlets: a fresh air outlet 1, a fresh air outlet 2, and a fresh air exhaust outlet 10. The ducted air conditioner is located next to the fresh air outlet 2, and the fresh air outlet faces the evaporator side of the ducted air conditioner. The internal circulation air inlet and the fresh air inlet 2 are located on the same side. The fresh air module has five modes: fresh air mode, mixed air supply mode, exhaust mode, internal circulation mode, and internal circulation + fresh air mode.

[0091] The fresh air module has a two-layer structure. The bottom layer houses the centrifugal fan 16, and the upper layer is the intake layer for the centrifugal fan 16. As seen in the 3D view of the upper duct 14, the fresh air inlet 2 is located in the middle, while the internal circulation inlets are on either side. The dampers in the internal circulation duct are designed within the duct itself, allowing for more precise adjustment (and avoiding direct placement at the internal circulation inlets would interfere with airflow and cause noise during the upward movement of the air). The lower duct 15 has three outlet structures: fresh air outlet 1, fresh air outlet 2, and fresh air exhaust outlet 10. Each outlet has a damper structure, not shown in the diagram. During the fresh air module's intake process, outdoor fresh air enters the fresh air intake chamber through the fresh air inlet 2. At this time, fresh air damper 1 is open, fresh air damper 4 is closed, and fresh air dampers 3 and 2 are closed. After fresh air enters the air intake cavity, it passes through the fresh air filter and enters the centrifugal fan 16. Since the fresh air filter has a circular design and a relatively symmetrical structure, it is recommended that the fresh air inlet 2 be located in the middle of the air intake cavity, so that the air intake is more uniform.

[0092] After fresh air enters the centrifugal fan 16, it has multiple air outlets. When fresh air outlet 1 is open and the other air outlets are closed, the fresh air module draws in air and directly discharges it into the room. When fresh air outlet 2 is open and the other fresh air outlets are closed, the fresh air module draws in air and introduces it into the air conditioner, where it mixes with the air outlets and is discharged.

[0093] In fresh air exhaust mode, the fresh air module draws air directly from below, increasing the airflow during intake and eliminating the need for a filter during exhaust, thus extending filter life. After air is drawn into the centrifugal fan 16, the fresh air valve 4 opens (while fresh air outlets 1 and 2 are closed). Airflow enters the fresh air intake chamber through the fresh air outlet 3. It's important to note that fresh air valve 1 must be closed at this point (along with fresh air valves 2 and 3). Once closed, the fresh air intake chamber is directly disconnected from the centrifugal fan 16's intake port. Indoor air intake can only enter the fresh air intake chamber through the fresh air exhaust duct, and then exhaust indoor air to the outside through the fresh air inlet 2. At this time, the airflow in the fresh air intake chamber can only be exhausted through the fresh air inlet 2.

[0094] In the fresh air recirculation mode, fresh air valves 2 and 3 are open, while fresh air valve 1 and fresh air exhaust vent 10 are closed. It's important to note that the control logic must ensure that fresh air valves 2 and 3 are linked and cannot operate independently. This guarantees uniform airflow in the recirculation system, resulting in lower noise and continuous air volume. When indoor air enters the recirculation duct, it is drawn in from both sides by centrifugal fans 16 and simultaneously exhausted from either fresh air outlet 1 or fresh air exhaust vent 2. For the recirculation mode, an alternative control scheme is proposed: independent control of the recirculation. This allows for single-sided recirculation duct opening (referred to as low recirculation) and double-sided recirculation duct opening (referred to as high recirculation).

[0095] The fresh air recirculation + fresh air mode is a relatively rare approach for fresh air modules. This application employs a structural arrangement where the recirculation air inlets are positioned on both sides of the fresh air inlet duct. This arrangement allows for a certain degree of mixing between the fresh air and indoor air. With a constant centrifugal fan 16 speed and a fixed intake duct, as the recirculation air inlets open, indoor airflow is drawn into the centrifugal fan 16, thus changing the amount of fresh outdoor air drawn in. Furthermore, if the angle of the recirculation valve increases, the angle of the fresh air inlet 2 decreases, resulting in a reduction in the proportion of fresh air.

[0096] For the fresh air module's internal circulation + fresh air mode, with valves 2 and 3 opening at angle a and valve 1 opening at angle b, four settings are currently proposed: Low proportion fresh air mode: Fresh air valve 1 opens at 15°, and valves 2 and 3 open at 75°. This mode offers a low fresh air ratio and is suitable for situations with poor outdoor air quality. Medium proportion fresh air mode: Fresh air valve 1 opens at 35°, and valves 2 and 3 open at 55°. This mode also offers a low fresh air ratio and is suitable for situations with moderate outdoor air quality. High proportion fresh air mode: Fresh air valve 1 opens at 75°, and valves 2 and 3 open at 15°. Full proportion fresh air mode: Fresh air valve 1 opens at 90°, and valves 2 and 3 open at 0°. The full proportion and high proportion fresh air modes are primarily used when outdoor air quality is good. It should be noted that the opening angle may deviate slightly by 1 to 3 degrees due to control and structural operation errors, but this will not have an overall impact. Meanwhile, the internal circulation + fresh air mode can be manually controlled, while the automatic mode is controlled by the outdoor PM2.5 sensor. It should also be noted that even in poor air quality conditions, users can still intervene to adjust to full-proportion fresh air mode.

[0097] The schematic diagram in this application uses a rectangular damper. The shape of the damper is not limited here, as long as it can achieve the function of controlling opening and closing.

[0098] It should be noted that, except for the internal circulation + fresh air mode, all other modes require the valve to be fully open or fully closed, and there is no option to open it to any angle and then stop.

[0099] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0100] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0101] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fresh air module, characterized in that The fresh air module includes: The housing includes an indoor side, an outdoor side, and a duct-type unit side. The housing also includes an upper air duct and a lower air duct, which are connected to the lower air duct via a fan. The fresh air inlet is located on the outdoor side and is connected to the outside. The fresh air inlet is connected to the upper air duct through the fresh air channel. The first air inlet is located on the outdoor side and is connected to the indoor area. The first air inlet is connected to the upper air duct through the first circulating air duct. The second air inlet is located on the outdoor side and is connected to the indoor area. The second air inlet is connected to the upper air duct through the second circulating air duct. The first air inlet and the second air inlet are located on both sides of the fresh air inlet, and the first circulating air duct and the second circulating air duct are located on both sides of the fresh air duct. The first circulating air duct, the air inlet duct and the second circulating air duct together form the upper air duct. The lower air duct has an air outlet; In internal circulation mode, indoor air entering through the first air inlet sequentially passes through the first circulation duct, the fan, and the lower duct, and is discharged through the air outlet; and / or In internal circulation mode, indoor air entering through the second air inlet sequentially passes through the second circulation duct, the fan, and the lower duct, and is exhausted through the air outlet; and / or In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the air outlet.

2. The fresh air module according to claim 1, characterized in that, The air outlet includes a first air outlet located on the indoor side. Indoor air entering through the first air inlet sequentially passes through the first circulating air duct, the fan, and the lower air duct, and is discharged through the first air outlet; and / or In internal circulation mode, indoor air entering through the second air inlet sequentially passes through the second circulation duct, the fan, and the lower duct, and is exhausted through the first air outlet; and / or In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the first air outlet.

3. The fresh air module of claim 1, wherein, The air outlet includes a second air outlet, which is located on the side of the air duct machine. Indoor air entering through the first air inlet passes sequentially through the first circulating air duct, the fan, and the lower air duct, and is discharged from the second air outlet. and / or In internal circulation mode, the indoor air entering through the second air inlet passes sequentially through the second circulation duct, the fan and the lower duct, and is discharged through the second air outlet. and / or In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the second air outlet.

4. The fresh air module of claim 1, wherein, The lower air duct also has a fresh air exhaust port, which is located on the indoor side. The indoor air that enters through the first air inlet passes through the first circulating air duct, the fan and the lower air duct in sequence, and is discharged through the fresh air exhaust port. and / or In internal circulation mode, the indoor air entering through the second air inlet passes sequentially through the second circulation duct, the fan, and the lower duct, and is discharged through the fresh air exhaust outlet. and / or In the suction mode, the outdoor air entering through the fresh air inlet passes sequentially through the fresh air duct, the fan, and the lower air duct, and is discharged through the fresh air exhaust outlet.

5. Fresh air module according to claim 4, characterized in that The air outlet includes a first air outlet and a second air outlet. The first air outlet is located on the indoor side, and the second air outlet is located on the duct air conditioner side. The fresh air exhaust outlet is located between the first air outlet and the second air outlet, and the fresh air exhaust outlet is arranged opposite to the second air outlet.

6. The fresh air module of claim 1, wherein, The housing is equipped with a partition assembly, which includes a first base plate, a second base plate, a first internal circulation baffle, and a second internal circulation baffle. The first base plate and the second base plate are connected sequentially. The first internal circulation baffle and the second internal circulation baffle are vertically inserted into the first base plate and the second base plate, forming three spaces on the first base plate and the second base plate, namely a fresh air channel and a first circulation air duct and a second circulation air duct respectively disposed on both sides of the fresh air channel. The first base plate has mounting holes for installing the fan, and the mounting holes are formed at least in the fresh air channel.

7. Fresh air module according to claim 6, characterized in that The mounting hole is formed between the fresh air duct and the first circulating air duct.

8. Fresh air module according to claim 6, characterized in that The fresh air duct has a first air valve, which is rotatably installed between the first internal circulation baffle and the second internal circulation baffle to adaptively adjust the air intake volume in the fresh air duct.

9. Fresh air module according to claim 6, characterized in that The second circulating air duct has a second air valve, which is rotatably installed between the second internal circulation baffle and the inner wall of the housing, for adaptively adjusting the air intake volume in the second circulating air duct.

10. The fresh air module of claim 6, wherein, The first circulating air duct has a third air valve, which is rotatably installed between the first inner circulating baffle and the inner wall to adaptively adjust the air intake in the first circulating air duct.

11. Fresh air module according to claim 5, characterized in that The lower air duct has a fourth air valve, which is movably installed between the first air outlet, the second air outlet and the fresh air exhaust outlet, for adaptively adjusting the opening and closing of the first air outlet, the second air outlet and the fresh air exhaust outlet.

12. An air conditioner characterized by comprising: The system includes a fresh air module as described in any one of claims 1-11, and further includes an indoor unit, which is matched and applied to the fresh air module to form an internal circulation mode and / or an air intake internal circulation mode.

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