Air conditioner

Abstract

The utility model provides a kind of air conditioner, including indoor unit body and outdoor unit body, and indoor unit body includes fresh air component, and fresh air component has fresh air passage, and fresh air passage is used to communicate with indoor environment;Outdoor unit body includes oxygen production component, for providing oxygen to indoor;Air conditioner further includes pipeline component, and pipeline component includes first pipe fitting and second pipe fitting, one end of first pipe fitting is used to communicate with outdoor environment, and the other end of first pipe fitting is communicated with fresh air passage, to introduce outdoor fresh air into fresh air passage;Two ends of second pipe fitting are respectively communicated with fresh air passage and oxygen production component, to make part outdoor fresh air in fresh air passage be discharged into indoor, and another part is transported to oxygen production component in second pipe fitting to carry out oxygen production;Wherein, at least part of first pipe fitting is sleeved on second pipe fitting.The present application solves the problem that the overall structure of air conditioner in prior art is complex after carrying oxygen production module, which leads to increased installation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an air conditioner. Background Technology

[0002] Air conditioning systems play a vital role in modern life and work, not only regulating indoor temperature to adapt to seasonal changes but also improving indoor air quality by introducing fresh air. However, as people's demands for health and comfort increase, traditional air conditioning systems are proving inadequate in addressing declining indoor oxygen levels and poor air quality. Existing solutions mainly include fresh air exchange devices and oxygen generators, both of which can improve the indoor environment to some extent, but have revealed a series of problems in practical applications.

[0003] Fresh air ventilation systems primarily refresh indoor air quality by introducing outdoor air. However, these systems often only consider air circulation and do not provide effective solutions for situations where indoor oxygen levels decrease. In enclosed environments, especially after prolonged operation, air conditioning systems can lead to a reduction in indoor oxygen levels, thereby affecting a person's mental state and work efficiency.

[0004] For air conditioners with oxygen generation functions, since the oxygen generation module is independent of the air conditioner's cooling, heating, or fresh air modules, it leads to the addition of a series of connecting pipes and filter components. This not only reduces the installation efficiency and increases the installation difficulty, but also increases the overall complexity of the air conditioner's structure. Utility Model Content

[0005] The main objective of this invention is to provide an air conditioner that solves the problem that the complex overall structure of existing air conditioners equipped with oxygen generating modules increases the difficulty of installation.

[0006] To achieve the above objectives, according to one aspect of the present invention, an air conditioner is provided, comprising an indoor unit and an outdoor unit. The indoor unit includes a fresh air assembly with a fresh air duct for communicating with the indoor environment. The outdoor unit includes an oxygen generating assembly for supplying oxygen to the indoor unit. The air conditioner also includes a piping assembly, comprising a first pipe and a second pipe. One end of the first pipe is for communicating with the outdoor environment, and the other end of the first pipe is for communicating with the fresh air duct to introduce outdoor fresh air into the fresh air duct. Both ends of the second pipe are respectively connected to the fresh air duct and the oxygen generating assembly, so that part of the outdoor fresh air in the fresh air duct is discharged into the indoor unit, and the other part is transported to the oxygen generating assembly for oxygen generation through the second pipe. At least a portion of the first pipe is sleeved on the second pipe.

[0007] Furthermore, the indoor unit is provided with an oxygen outlet, and the piping assembly also includes: a third pipe fitting, the two ends of which are respectively connected to the oxygen generation opening and the oxygen outlet of the oxygen generation assembly; at least a portion of the third pipe fitting passes through the first pipe fitting.

[0008] Furthermore, the inner diameter of the first pipe fitting is D, and the inner diameter of the second pipe fitting is D1; ​​wherein, D / D1≥2.

[0009] Furthermore, the piping assembly also includes: a limiting component disposed within the first pipe fitting, the limiting component having a limiting space, at least a portion of the second pipe fitting and / or the third pipe fitting being disposed within the limiting space, so as to limit the second pipe fitting and / or the third pipe fitting by means of the limiting component; wherein, at least a portion of the limiting component is elastically disposed, there are multiple limiting components, and the multiple limiting components are spaced apart along the extension direction of the first pipe fitting.

[0010] Furthermore, the fresh air assembly also includes a filter component, which is installed in the fresh air duct. After filtering the outdoor fresh air, the outdoor fresh air flows into the indoor unit and / or the second duct.

[0011] Furthermore, the fresh air assembly includes: an installation body mounted on the indoor unit, and a fresh air duct disposed within the installation body; a first pipe fitting and a second pipe fitting respectively connected to the installation body to communicate with the fresh air duct.

[0012] Furthermore, the main body of the installation is equipped with a partition, which divides the fresh air duct into a first channel and a second channel; the partition is provided with a connecting hole, through which the first channel and the second channel are connected; the first pipe is connected to the first channel, and the second pipe is connected to the second channel.

[0013] Furthermore, the partition includes a first plate and a second plate, which are arranged at an angle to form a sound-absorbing cavity between the first plate, the second plate, and the inner wall of the fresh air duct; the connecting hole includes a first connecting hole and a second connecting hole, which are disposed on the first plate and the second connecting hole are disposed on the second plate. The airflow in the first channel flows through the first connecting hole, the sound-absorbing cavity, and the second connecting hole in sequence before flowing into the second channel.

[0014] Furthermore, there are multiple first connecting holes, which are spaced apart on the first plate; and / or, there are multiple second connecting holes, which are spaced apart on the second plate.

[0015] Furthermore, the installation body also includes a connector, one end of which is connected to the first pipe fitting, and the other end of which is connected to the fresh air duct; along the airflow direction within the connector, the cross-sectional area of ​​the connector's flow section gradually increases.

[0016] Furthermore, the fresh air duct has an outdoor air inlet, an indoor air inlet, a first air outlet, and a second air outlet. The first air outlet is connected to the indoor environment, and the second air outlet is connected to a second duct. The fresh air assembly also includes a switching component, which is rotatably disposed between the outdoor air inlet and the indoor air inlet so that the outdoor air inlet and the indoor air inlet can be selectively connected to the fresh air duct.

[0017] Furthermore, the fresh air duct has a first stop and a second stop, the first stop forming an indoor air inlet and the second stop forming an outdoor air inlet; the switching component rotates to fit against the first stop to block the indoor air inlet; the switching component rotates to fit against the second stop to block the outdoor air inlet.

[0018] Furthermore, the first stop portion includes a first stop end face, the second stop portion includes a second stop end face, and the plane containing the first stop end face and the plane containing the second stop end face are arranged at an angle, the angle being an acute angle.

[0019] Furthermore, the fresh air duct includes a first duct and a second duct that are interconnected. The first duct includes a first flow section and a second flow section that are interconnected. The indoor air inlet, the outdoor air inlet, and the first air outlet are respectively connected to the second flow section. The second air outlet is connected to the first flow section. The first flow section is connected to and connected to a first duct fitting. The second duct fitting passes through the first duct fitting, passes through the first flow section, and connects to the second duct. The outdoor air inlet is located between the first flow section and the second flow section.

[0020] Furthermore, the indoor unit is equipped with an air outlet duct and an oxygen outlet, with the oxygen outlet located on the wall of the air outlet duct.

[0021] The present invention provides an air conditioner indoor unit comprising a fresh air assembly with a fresh air duct, and an outdoor unit comprising an oxygen generating assembly for supplying oxygen to the indoor unit. A first pipe and a second pipe are provided. One end of the first pipe is connected to the outdoor environment, and the other end is connected to the fresh air duct to introduce outdoor fresh air into the duct. Both ends of the second pipe are connected to the fresh air duct and the oxygen generating assembly, respectively, so that some outdoor fresh air in the fresh air duct is discharged into the room, and the remaining portion is transported to the oxygen generating assembly for oxygen production. At least a portion of the first pipe is fitted onto the second pipe. This design combines the fresh air and oxygen generating functions of the air conditioner, using outdoor fresh air as the air source for the oxygen generating assembly. The oxygen generating assembly does not require a separate outdoor intake and oxygen generation pipeline structure. This design significantly reduces the number of external pipelines, simplifies the air conditioner installation process, and saves installation space. The air conditioner of this application can simultaneously meet the needs of fresh air exchange and oxygen replenishment, effectively improving indoor air quality. The introduction of fresh air ensures the circulation and freshness of indoor air, while the oxygen generation function ensures sufficient indoor oxygen content. Together, they create a healthier indoor environment. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0023] Figure 1 A structural schematic diagram of an embodiment of an air conditioner according to the present invention is shown;

[0024] Figure 2 A schematic diagram of the structure of the indoor unit of the air conditioner according to the present invention is shown;

[0025] Figure 3 A partial structural schematic diagram of the piping assembly in an air conditioner according to the present invention is shown;

[0026] Figure 4 A first-view structural schematic diagram of the fresh air assembly in an air conditioner according to the present invention is shown;

[0027] Figure 5 A second-view structural schematic diagram of the fresh air assembly in an air conditioner according to the present invention is shown;

[0028] Figure 6 A third-view structural schematic diagram of the fresh air assembly in an air conditioner according to the present invention is shown;

[0029] Figure 7 A fourth-view structural schematic diagram of the fresh air assembly in an air conditioner according to the present invention is shown;

[0030] Figure 8 A schematic diagram of the assembly of the first plate and a plurality of first connecting holes in an air conditioner according to the present invention is shown.

[0031] Figure 9 A schematic diagram is shown of the switching component in the first position in the air conditioner according to the present invention;

[0032] Figure 10 A schematic diagram is shown of the switching component in the second position in an air conditioner according to the present invention.

[0033] The above figures include the following reference numerals:

[0034] 100. Indoor unit; 110. Oxygen outlet; 120. Air outlet duct; 200. Outdoor unit;

[0035] 300. Fresh air assembly; 301. Fresh air duct; 3010. Outdoor air inlet; 3011. Indoor air inlet; 3012. First air outlet; 3013. Second air outlet; 302. First channel; 303. Second channel; 3020. First flow section; 3021. Second flow section; 304. First stop; 305. Second stop; 3040. First stop end face; 3050. Second stop end face;

[0036] 310. Filter component; 320. Mounting body; 330. Partition plate; 3301. First plate; 3302. Second plate; 331. Connecting hole; 3310. First connecting hole; 3311. Second connecting hole; 340. Connector; 350. Switching component;

[0037] 400, Oxygen generating assembly; 500, Piping assembly; 510, First fitting; 520, Second fitting; 530, Limiting component. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] As mentioned in the background section, existing air conditioners have installed fresh air exchange modules or oxygen generation modules inside the unit to improve indoor air quality. While both can improve the indoor environment to some extent, they have the following problems: Fresh air exchange devices can only introduce outdoor fresh air into the room, which can lead to a decrease in indoor oxygen content when the room is relatively sealed; As for air conditioners with oxygen generation functions, since the oxygen generation module is installed and operates independently from other functions of the air conditioner, it leads to an increase in a series of pipelines and filtration structures, which greatly increases the complexity of the overall structure of the air conditioner. Therefore, in view of the above-mentioned technical problems, the air conditioner provided in this application includes an indoor unit 100 with a fresh air assembly 300, the fresh air assembly 300 having a fresh air duct 301, and an outdoor unit 200 with an oxygen generating assembly 400 for providing oxygen to the indoor unit. A first pipe 510 and a second pipe 520 are provided. One end of the first pipe 510 is connected to the outdoor environment, and the other end of the first pipe 510 is connected to the fresh air duct 301 to introduce outdoor fresh air into the fresh air duct 301. The two ends of the second pipe 520 are respectively connected to the fresh air duct 301 and the oxygen generating assembly 400, so that part of the outdoor fresh air in the fresh air duct 301 is discharged into the indoor unit, and the other part is transported to the oxygen generating assembly 400 through the second pipe 520 for oxygen generation. At least a portion of the first pipe 510 is fitted onto the second pipe 520. This design combines the air conditioner's fresh air function with its oxygen generation function. It utilizes outdoor fresh air to supply the oxygen generation component 400, eliminating the need for a separate outdoor intake and oxygen generation pipeline structure. This design significantly reduces the number of external pipelines, simplifies the air conditioner's installation process, and saves installation space. The air conditioner of this application can simultaneously meet the needs of fresh air exchange and oxygen replenishment, effectively improving indoor air quality. The introduction of fresh air ensures indoor air circulation and freshness, while the oxygen generation function ensures sufficient indoor oxygen content. Together, they create a healthier indoor environment.

[0040] Please refer to Figures 1 to 10This application provides an air conditioner, including an indoor unit 100 and an outdoor unit 200. The indoor unit 100 includes a fresh air assembly 300, which has a fresh air duct 301 for communicating with the indoor environment. The outdoor unit 200 includes an oxygen generating assembly 400 for supplying oxygen to the room. The air conditioner also includes a piping assembly 500, which includes a first pipe fitting 510 and a second pipe fitting 520. One end of the first pipe fitting 510 is for communicating with the outdoor environment, and the other end of the first pipe fitting 510 is connected to the fresh air duct 301 to introduce outdoor fresh air into the fresh air duct 301. The two ends of the second pipe fitting 520 are respectively connected to the fresh air duct 301 and the oxygen generating assembly 400, so that part of the outdoor fresh air in the fresh air duct 301 is discharged into the room, and the other part is transported to the oxygen generating assembly 400 through the second pipe fitting 520 for oxygen generation.

[0041] The air conditioner provided in this application includes an indoor unit 100 and an outdoor unit 200. The indoor unit 100 includes a fresh air assembly 300, which has a fresh air duct 301 for communicating with the indoor environment. The outdoor unit 200 includes an oxygen generating assembly 400 for supplying oxygen to the room. The air conditioner also includes a piping assembly 500, which includes a first pipe fitting 510 and a second pipe fitting 520. One end of the first pipe fitting 510 is for communicating with the outdoor environment, and the other end of the first pipe fitting 510 is connected to the fresh air duct 301 to introduce outdoor fresh air into the fresh air duct 301. The two ends of the second pipe fitting 520 are respectively connected to the fresh air duct 301 and the oxygen generating assembly 400, so that part of the outdoor fresh air in the fresh air duct 301 is discharged into the room, and the other part is transported to the oxygen generating assembly 400 through the second pipe fitting 520 for oxygen generation.

[0042] By using the first fitting 510 and the second fitting 520, the fresh air intake and oxygen production gas pipelines are cleverly integrated together, avoiding the problem of traditional oxygen-generating air conditioners requiring additional oxygen intake pipelines. This reduces the complexity of wall drilling and pipeline wiring, simplifies the installation process, and lowers installation costs.

[0043] The second fitting 520 directly draws pre-filtered outdoor fresh air from the fresh air duct 301, shortening the gas transmission distance and reducing airflow resistance and energy loss during transmission, thereby improving the working efficiency of the oxygen generating unit 400.

[0044] Specifically, the indoor unit 100 is provided with an oxygen outlet 110, and the piping assembly 500 also includes a third pipe fitting, the two ends of which are respectively connected to the oxygen generation opening of the oxygen generation assembly 400 and the oxygen outlet 110; at least a portion of the third pipe fitting passes through the first pipe fitting 510. The fact that at least a portion of the third pipe fitting passes through the first pipe fitting 510 makes full use of the space in the fresh air introduction channel, reduces the need for additional piping for installation space, and makes the air conditioner's installation layout more compact and easier to install in various indoor environments.

[0045] By placing the third fitting inside the first fitting 510, heat exchange and pressure loss during the transfer of oxygen from the oxygen generator 400 to the room can be reduced, thereby reducing energy consumption and improving the overall energy efficiency of the system.

[0046] The inner diameter of the first fitting 510 is D, and the inner diameter of the second fitting is D1; ​​where D / D1≥2. By setting the ratio of D / D1≥2, it is ensured that the first fitting 510 has a sufficiently large inner diameter, thereby enabling the introduction of ample outdoor fresh air. This not only meets the needs of indoor ventilation and oxygen replenishment, but also ensures that even if some fresh air is consumed during oxygen production, the fresh air assembly 300 can still provide sufficient fresh air volume to maintain indoor air circulation.

[0047] The smaller inner diameter of the second fitting 520 allows for more precise control of the gas flow to the oxygen generator 400, preventing gas waste during transmission. Since D / D1≥2, the gas required for oxygen production can be efficiently extracted directly from the fresh air supply, reducing pressure loss along the gas transmission path, improving oxygen production efficiency, and ensuring the quality of the gas required for the oxygen production process.

[0048] Because the first duct 510 can efficiently introduce a large amount of fresh air, while the second duct 520 precisely controls the amount of gas flowing to the oxygen-generating unit 400, this design reduces ineffective energy consumption. During oxygen generation, the optimized gas transmission path reduces additional energy loss.

[0049] In the specific implementation process, the pipeline assembly 500 further includes: a limiting component 530 disposed within the first pipe fitting 510, the limiting component 530 having a limiting space, at least a portion of the second pipe fitting 520 and / or the third pipe fitting being disposed within the limiting space, so as to limit the second pipe fitting 520 and / or the third pipe fitting by means of the limiting component 530; wherein, at least a portion of the limiting component 530 can be elastically disposed, there are multiple limiting components 530, and the multiple limiting components 530 are spaced apart along the extension direction of the first pipe fitting 510.

[0050] At least a portion of the limiting component 530 is made of an elastic material, which can deform appropriately according to the actual size of the second fitting 520 or the third fitting, thereby providing a tighter and more stable limiting effect, ensuring that the fitting is fixed in position and structurally stable during use, and reducing the risk of pipeline leakage caused by vibration or displacement.

[0051] Multiple limiting components 530 are spaced apart along the extension direction of the first pipe fitting 510, which can limit the second pipe fitting 520 at multiple points. Even if a certain limiting point is damaged or fails, the other limiting components can still function, thus improving the reliability and redundancy of the system.

[0052] The limiting component 530 can also provide certain physical protection for the second fitting 520 and / or the third fitting, preventing damage from external factors (such as impact and corrosion) and extending the service life of the entire pipeline system.

[0053] In this application, the limiting component 530 is made of silicone, polytetrafluoroethylene, or EPDM rubber, etc., to ensure that it maintains good limiting performance under different temperature and humidity conditions, while avoiding limiting failure caused by material aging.

[0054] The limiting component 530 is an annular structure with an opening for the second pipe fitting 520 and / or the third pipe fitting to be inserted. The annular structure is embedded in the inner wall of the first pipe fitting 510 to ensure stable positioning of the second pipe fitting 520 and / or the third pipe fitting. The limiting component 530 and the first pipe fitting 510 are integrally injection molded structures.

[0055] In the embodiments provided in this application, the fresh air assembly 300 further includes a filter component 310, disposed within the fresh air duct 301. The filter component 310 filters the outdoor fresh air, allowing it to flow into the indoor unit and the second duct 520. Using a shared filter component 310 replaces the traditional air conditioning system where each independent component (fresh air, oxygen generation) requires its own filter, reducing consumable usage, lowering operating costs, and simplifying daily maintenance for users. The integrated design of the filter component 310 and the fresh air assembly 300 reduces the installation space required for additional components, making the air conditioner more compact and easier to install.

[0056] The filter installed in the fresh air component 300 can serve both the fresh air duct 301 and the oxygen generation process, eliminating the need for an additional filter structure in the oxygen generation component 400. This not only reduces the overall material usage and maintenance costs but also improves the utilization rate of the filter.

[0057] Furthermore, the fresh air assembly 300 includes: an installation body 320, which is mounted on the indoor unit 100, and a fresh air duct 301, which is disposed within the installation body 320; a first pipe fitting 510 and a second pipe fitting 520 are respectively connected to the installation body 320 to communicate with the fresh air duct 301.

[0058] The mounting body 320 integrates the fresh air duct 301. The docking method between the first pipe fitting 510 and the second pipe fitting 520 makes the entire air conditioning system design more compact. The docking design between the first pipe fitting 510 and the second pipe fitting 520 and the mounting body 320 avoids complex wiring and pipe assembly.

[0059] The second pipe fitting 520, through its connection with the fresh air duct 301, can directly obtain pre-filtered air by means of the fresh air introduced by the first pipe fitting 510, which can then be used for the subsequent oxygen production process. This achieves effective synergy between the fresh air and oxygen production functions, thereby improving the overall efficiency of the system.

[0060] Specifically, the main body 320 is also equipped with a partition 330, which divides the fresh air duct 301 into a first channel 302 and a second channel 303; the partition 330 is provided with a connecting hole 331, through which the first channel 302 and the second channel 303 are connected; the first pipe 510 is connected to the first channel 302, and the second pipe 520 is connected to the second channel 303.

[0061] The partition 330 subdivides the fresh air duct 301 into a first duct 302 and a second duct 303. The first fitting 510 is connected to the first duct 302 and is responsible for introducing fresh air; the second fitting 520 is connected to the second duct 303 and is used for the intake of oxygen-generating equipment. This design ensures the independent operation of the fresh air and oxygen-generating intake functions, while the connecting hole 331 allows them to work together when necessary, improving the overall flexibility and efficiency of the system.

[0062] In this application, the second channel 303, in addition to serving as an oxygen-generating channel, can also reduce the noise of the fresh air flowing in the first channel 302. After the partition 330 divides the fresh air channel 301 into the first channel 302 and the second channel 303, the second channel 303 can act as a sound-absorbing cavity for the first channel 302 as the fresh air flows through the first channel 302. When the airflow flows in the second channel 303, it will collide and diffuse with the air inside the cavity multiple times. This multiple reflection and diffusion can effectively attenuate the energy of the sound waves, thereby reducing the noise of the fresh air flow. Furthermore, it can also isolate the noise transmitted to the room by the air compressor through the second pipe 520.

[0063] The partition 330 is equipped with a door panel, which is slidably mounted on the partition 330 to block or avoid the connecting hole 331, so as to realize the independent fresh air function or the fresh air function and the oxygen generation function working together.

[0064] Furthermore, the connecting hole 331 on the partition 330 can precisely control the airflow exchange between the first channel 302 and the second channel 303. When the oxygen generator needs more fresh air, the size or opening state of the connecting hole 331 can be adjusted, i.e., the area of ​​the door panel blocking the connecting hole 331 can be adjusted, to increase the fresh air supply to the second channel 303, and vice versa. This design helps to achieve intelligent optimization of airflow and improve the air quality improvement effect.

[0065] By dividing the fresh air duct 301 into two independent channels that can be connected through the connecting hole 331, the filtration area of ​​the filter screen can be utilized more effectively. When the second fitting 520 is turned on for intake, the filtered fresh air not only supplies the fresh air demand but can also be used for oxygen production, avoiding the use of additional filters during oxygen production and reducing consumables.

[0066] In the specific implementation provided in the application, in order to reduce the noise generated by the fresh air flowing through the first channel 302 and to prevent the noise of the outdoor air compressor during the oxygen production process from being transmitted to the room, the partition 330 includes a first plate 3301 and a second plate 3302. The first plate 3301 and the second plate 3302 are arranged at an angle to form a sound-absorbing cavity between the first plate 3301, the second plate 3302 and the inner wall of the fresh air channel 301. The connecting hole 331 includes a first connecting hole 3310 and a second connecting hole 3311. The first connecting hole 3310 is disposed on the first plate 3301 and the second connecting hole 3311 is disposed on the second plate 3302. The airflow in the first channel 302 flows through the first connecting hole 3310, the sound-absorbing cavity and the second connecting hole 3311 in sequence and then flows into the second channel 303.

[0067] The design of the silencing cavity forms a buffer zone between the first channel 302 and the second channel 303. When the airflow flows in the silencing cavity, it will collide and diffuse with the air inside the cavity multiple times. This multiple reflection and diffusion can effectively attenuate the energy of the sound wave, thereby reducing the noise during the airflow process, and at the same time reducing the noise transmitted from the air compressor to the room through the second pipe 520.

[0068] Specifically, such as Figures 8 to 10 As shown, there are multiple first connecting holes 3310, which are spaced apart on the first plate 3301; and / or, there are multiple second connecting holes 3311, which are spaced apart on the second plate 3302.

[0069] The design of multiple first connecting holes 3310 and / or multiple second connecting holes 3311 can disperse the airflow, making the gas more evenly distributed in the channel, avoiding the airflow concentration and turbulence that may be caused by a single large hole, and improving the airflow stability and efficiency of the entire system.

[0070] Preferably, the diameter of each first connecting hole 3310 is 1mm to 3mm, and the area where multiple first connecting holes 3310 are arranged is a first ventilation zone, the total area of ​​the first ventilation zone is greater than 50% of the surface area of ​​the first plate 3301; and / or, the diameter of each second connecting hole 3311 is 1mm to 3mm, and the area where multiple second connecting holes 3311 are arranged is a second ventilation zone, the total area of ​​the second ventilation zone is greater than 50% of the surface area of ​​the second plate 3302.

[0071] By limiting the apertures of the first connecting hole 3310 and / or the second connecting hole 3311, and utilizing the principle of micro-pore noise reduction, multiple small holes can more effectively absorb and weaken sound waves compared to a single large hole, reducing the noise generated when airflow passes through the connecting holes and providing users with a quieter experience. Specifically, when sound waves encounter a micropore, some are reflected by the hole wall, while others penetrate the pore and enter the interior. Due to the small pore volume, the sound waves undergo multiple reflections and scatterings within the pore, converting into heat energy and being absorbed, thereby reducing noise intensity.

[0072] The air conditioner of this application optimizes airflow distribution and enhances filtration and purification by setting multiple intermittent connecting holes on the plate in the fresh air duct 301. It also significantly reduces operating noise by utilizing the microporous sound-absorbing principle, thereby improving the user experience.

[0073] In the specific implementation process, the installation body 320 also includes a connector 340. One end of the connector 340 is connected to the first pipe 510, and the other end of the connector 340 is connected to the fresh air duct 301. Along the airflow direction in the connector 340, the cross-sectional area of ​​the flow section of the connector 340 gradually increases.

[0074] The gradually increasing cross-sectional area of ​​connector 340 helps reduce the resistance encountered by air as it transitions from the first duct 510 to the fresh air duct 301. The airflow gradually expands after passing through the narrow inlet, reducing velocity and minimizing the generation of eddies and turbulence, thereby reducing noise and energy consumption as the airflow passes through the connector.

[0075] The gradual increase in the cross-sectional area of ​​the airflow helps to distribute the airflow more evenly on the filter element 310, avoids local overload, enhances the filtration effect, and also helps to make the airflow distribution of the entire fresh air assembly 300 more reasonable, thus improving the efficiency of fresh air introduction.

[0076] The gradually expanding flow cross-section design allows the connector 340 to better adapt to changes in different airflow conditions. Even under conditions of high or low airflow velocity, it can maintain good airflow stability and filtration effect, thereby enhancing the adaptability and stability of the air conditioning system.

[0077] In this application, the fresh air duct 301 has an outdoor air inlet 3010, an indoor air inlet 3011, a first air outlet 3012, and a second air outlet 3013. The first air outlet 3012 is connected to the indoor environment, and the second air outlet 3013 is connected to the second pipe fitting 520. The fresh air assembly 300 also includes a switching component 350, which is rotatably disposed between the outdoor air inlet 3010 and the indoor air inlet 3011, so that the outdoor air inlet 3010 and the indoor air inlet 3011 can be selectively connected to the fresh air duct 301.

[0078] The switching component 350 is rotatably positioned between the outdoor air inlet 3010 and the indoor air inlet 3011, allowing the user or intelligent control system to selectively introduce fresh air from the outside or inside based on current indoor and outdoor environmental conditions. This greatly enhances the adaptability and flexibility of the air conditioning system to different environments. It enables the air conditioner to intelligently adjust the fresh air introduction strategy based on the indoor and outdoor temperature difference and air quality without affecting user comfort, ensuring a suitable indoor temperature while maintaining good air quality and improving the comfort of the living or office environment.

[0079] Under conditions of high or low outdoor temperatures, the outdoor air inlet 3010 can be closed, and fresh air can be introduced only through the indoor air inlet 3011 to reduce the additional energy consumed due to temperature regulation. When the outdoor air quality is good, fresh air should be introduced first through the outdoor air inlet 3010 to improve the efficiency of fresh air introduction and reduce energy consumption.

[0080] Furthermore, the fresh air duct 301 has a first stop 304 and a second stop 305. The first stop 304 forms an indoor air inlet 3011, and the second stop 305 forms an outdoor air inlet 3010. The switching component 350 rotates to fit against the first stop 304 to block the indoor air inlet 3011. The switching component 350 rotates to fit against the second stop 305 to block the outdoor air inlet 3010.

[0081] By rotating the switching component 350 to engage with either the first stop 304 or the second stop 305, the opening and closing of the indoor air inlet 3011 and the outdoor air inlet 3010 can be flexibly controlled. This means that when the indoor air quality meets the standards, or when the external environment is harsh (such as smog, high temperature, or low temperature), the outdoor air inlet 3010 can be closed to prioritize the circulation of indoor air; conversely, when fresh air needs to be replenished, the indoor circulation can be closed and the outdoor fresh air can be introduced, thus realizing intelligent switching of air circulation modes.

[0082] This mechanism allows for selective introduction or closure of outdoor fresh air based on actual needs, reducing unnecessary energy consumption. Especially under extreme weather conditions, closing the outdoor air inlet 3010 prevents increased energy consumption when introducing large amounts of cold / hot outdoor air into the air conditioning system. When outdoor air quality is poor, closing the outdoor air inlet 3010 reduces the burden on the air filter, extending its lifespan and saving on maintenance and consumable costs.

[0083] Specifically, the first stop portion 304 includes a first stop end face 3040, and the second stop portion 305 includes a second stop end face 3050. The plane containing the first stop end face 3040 and the plane containing the second stop end face 3050 are arranged at an angle, and the angle is an acute angle.

[0084] The acute angle setting allows the first stop end face 3040 and the second stop end face 3050 to be arranged compactly in space, effectively utilizing the three-dimensional space inside the fresh air component 300 and reducing the overall component volume. Especially in the spatial layout of the indoor unit 100, this design can save valuable installation space.

[0085] In this application, the fresh air duct 301 includes a first duct 302 and a second duct 303 that are interconnected. The first duct 302 includes a first flow section 3020 and a second flow section 3021 that are interconnected. The indoor air inlet 3011, the outdoor air inlet 3010, and the first air outlet 3012 are respectively connected to the second flow section 3021. The second air outlet 3013 is connected to the first flow section 3020. The first flow section 3020 is connected to the first pipe fitting 510. The second pipe fitting 520 passes through the first pipe fitting 510, passes through the first flow section 3020, and connects to the second duct 303. The outdoor air inlet 3010 is located between the first flow section 3020 and the second flow section 3021.

[0086] The design of the first channel 302 and the second channel 303 achieves physical isolation between the fresh air introduction and oxygen generation and intake functions, thereby ensuring that the two processes do not interfere with each other and improving the system's operating efficiency and controllability.

[0087] The interconnected design of the first flow section 3020 and the second flow section 3021 allows outdoor fresh air to pass through the first flow section 3020 for initial buffering before flowing into the second flow section 3021 for further processing. This progressive airflow path design helps reduce airflow impact, improve filtration efficiency, and ensure indoor air quality.

[0088] The first fitting 510 is connected to the first flow section 3020, which not only undertakes the task of introducing fresh air, but also provides a passage for the second fitting 520 to pass through, so that the second fitting 520 can be smoothly connected to the second channel 303. This realizes the sharing of pipeline resources and the separation of functions, greatly improves the system integration, and simplifies the installation and maintenance process.

[0089] The indoor unit 100 is provided with an air outlet duct 120 and an oxygen outlet 110, with the oxygen outlet 110 located on the wall of the air outlet duct 120.

[0090] Oxygen is released directly into the air outlet duct 120 through oxygen outlet 110, where it mixes with the air from the air conditioner and is then evenly distributed into the indoor environment. This design ensures rapid and even diffusion of oxygen indoors, avoiding safety hazards caused by excessively high local oxygen concentrations, while also improving user comfort and solving the problem of uneven oxygen distribution caused by oxygen accumulation in small areas.

[0091] Integrating the oxygen outlet 110 into the wall of the air outlet duct 120 makes full use of the existing space and avoids additional installation space occupation, making the internal structure of the air conditioner more compact and reasonable. Due to the tight integration of the oxygen outlet 110 and the air outlet duct 120, the air conditioner can achieve synchronous regulation of oxygen concentration and indoor temperature through a single control system.

[0092] The integrated design of oxygen outlet 110 and air outlet duct 120 simplifies the installation process of indoor unit 100, avoids the laying of additional pipes, reduces installation difficulty, and reduces installation time and cost.

[0093] This application also provides an air conditioner control method applicable to the air conditioner of the above embodiments. The rotation speed of the fresh air assembly 300 of the air conditioner is divided into a first-level fresh air speed and a second-level fresh air speed from low to high; the rotation speed of the oxygen generating assembly 400 is divided into a first-level oxygen generating speed and a second-level oxygen generating speed from low to high; the air conditioner control method includes:

[0094] Obtain outdoor environmental information, which should include at least: outdoor ambient temperature and outdoor air quality;

[0095] Based on outdoor environmental information, control the fresh air unit 300 to operate at the first-level fresh air speed and the oxygen generating unit 400 to operate at the second-level oxygen generating speed; or...

[0096] The fresh air assembly 300 is controlled to operate at the second fresh air speed, and the oxygen generation assembly 400 is controlled to operate at the first oxygen generation speed.

[0097] The control method can adjust the speed of the fresh air and oxygen generation components in real time according to the outdoor ambient temperature and air quality. Under harsh outdoor environmental conditions (such as low temperature, high temperature, and high PM2.5 concentration), the combination of high-speed oxygen generation and low-speed fresh air introduction prioritizes ensuring the indoor oxygen concentration while reducing the adverse effects of introducing harsh outdoor air on the indoor environment.

[0098] When the outdoor environment is suitable, the configuration of high-speed fresh air introduction and low-speed oxygen production can introduce fresh air more efficiently and reduce energy consumption in the oxygen production process. This ensures indoor air quality while saving energy. By controlling the speed of the fresh air and oxygen production components, precise adjustments can be made according to the actual needs of indoor air quality, avoiding unnecessary over-ventilation or oxygen production, ensuring that indoor air quality is always at its best, and improving the operating efficiency of the air conditioning system and user satisfaction.

[0099] Control methods also include:

[0100] A first temperature threshold, a second temperature threshold, and a third temperature threshold are constructed, and the first temperature threshold, the second temperature threshold, and the third temperature threshold are gradually increased;

[0101] When the outdoor ambient temperature is at the first or third temperature threshold, the fresh air assembly 300 is controlled to operate at the first fresh air speed and the oxygen generation assembly 400 is controlled to operate at the second oxygen generation speed.

[0102] When the outdoor ambient temperature is at the second temperature threshold, the fresh air assembly 300 is controlled to operate at the second fresh air speed, and the oxygen generation assembly 400 is controlled to operate at the first oxygen generation speed.

[0103] Setting the first, second, and third temperature thresholds allows the air conditioner to intelligently adjust the operating speed of the fresh air and oxygen generation components based on subtle changes in outdoor temperature, achieving dual management of indoor temperature and air quality. Compared to fixed-mode operation, this method can more accurately match the user's needs for the indoor environment.

[0104] When the outdoor temperature is extremely low (below the first temperature threshold) or extremely high (above the third temperature threshold), the fresh air intake speed is reduced (first-level fresh air speed) to avoid introducing a large amount of air at extreme temperatures, thereby reducing the energy consumption of the air conditioning system in temperature regulation. When the outdoor temperature is moderate (close to the second temperature threshold), the fresh air intake speed is accelerated (second-level fresh air speed) while the oxygen production rate is reduced, ensuring indoor air freshness while maximizing energy savings.

[0105] By matching the temperature threshold setting with the component rotation speed, this control method can maintain indoor air quality under different outdoor temperature environments while taking into account human comfort. It avoids drastic changes in indoor temperature and humidity caused by excessive fresh air introduction or oxygen production, providing users with a more comfortable and healthy living or working environment.

[0106] Preferably, the first temperature threshold is an outdoor temperature H ≤ 0℃, the second temperature threshold is 0℃ < H < 30℃, and the third temperature threshold is an outdoor temperature H ≥ 30℃.

[0107] Control methods also include:

[0108] Construct a first quality threshold and a second quality threshold, where the first quality threshold is lower than the second quality threshold;

[0109] When the outdoor air quality is at the second quality threshold, the fresh air assembly 300 is controlled to operate at the first fresh air speed, and the oxygen generation assembly 400 is controlled to operate at the second oxygen generation speed.

[0110] When the outdoor air quality is at the first quality threshold, the fresh air component 300 is controlled to operate at the second fresh air speed, and the oxygen generation component 400 is controlled to operate at the first oxygen generation speed.

[0111] The setting of the first and second quality thresholds allows the air conditioner to automatically adjust its fresh air and oxygen production modes according to different outdoor air quality levels. When the outdoor air quality is high, fresh air is introduced at a lower fresh air velocity while the oxygen production function is enhanced to ensure indoor oxygen concentration; when the outdoor air quality is poor, the fresh air introduction velocity is increased to dilute potentially polluted indoor air while the oxygen production velocity is reduced to avoid introducing too much impure outdoor air.

[0112] The air conditioner and its control method disclosed in this application combine fresh air and oxygen generation functions by designing the fresh air component as a dual-duct system and the air duct as a dual-channel system. This saves space and simplifies installation, avoiding the complex pipe management, wrapping, and hole enlargement required for wall penetration that would otherwise require multiple pipes running together. The oxygen generation intake port (i.e., the second air outlet 3013) is designed within the fresh air unit's air inlet cavity, sharing a filter with the fresh air unit, reducing material consumption. This also reduces the oxygen generation intake pipe path, improving oxygen generation efficiency. Utilizing the consistently positive pressure characteristic of the fresh air component, the required fresh air for oxygen generation can be ensured without the need for additional dampers. Reducing the number of parts simplifies production, improves reliability, and saves space, making component design easier and more miniaturized. The synchronous intelligent control design makes the air conditioner more energy-efficient and extends the filter's lifespan.

[0113] The oxygen generator is designed to be placed on the outdoor unit casing, sharing the casing with the air conditioner's outdoor unit. The fresh air component is designed inside the air conditioner's indoor unit, with the oxygen outlet located on the left side of the indoor unit's air outlet. The fresh air component features a dual-channel design, namely the first channel 302 and the second channel 303. The ductwork is designed as a dual-channel duct, with the first fitting 510 fitted onto the second fitting 520. The ratio of the inner diameter D of the first fitting 510 to the outer diameter D1 of the second fitting 520 is greater than or equal to 2, i.e., D / D1≥2, satisfying both oxygen generation and intake requirements while ensuring a sufficient fresh air volume. By utilizing the duct space and the size of the oxygen generation duct, a dual-channel duct system is constructed, satisfying both fresh air and oxygen generation requirements, thus simplifying installation. This solves the problem of needing multiple pipe wrappings and additional drilling for running both fresh air and oxygen generation ducts simultaneously, saving space and making installation simpler.

[0114] Designing the oxygen generator's intake pipe inlet within the fresh air unit's air intake cavity, sharing a filter with the fresh air unit, reduces consumable usage. This also shortens the oxygen generator's intake pipe path, improving oxygen generation efficiency; furthermore, it avoids the need for additional filters, reducing consumable consumption. The combination of fresh air and oxygen generation allows for multiple state adjustments, making air quality improvement smarter and more efficient. It solves the problems of needing additional filters at the end of the oxygen generator's intake pipe, excessively long oxygen generator intake pipes, and the space occupied by installing both fresh air components and oxygen generators simultaneously. It effectively combines fresh air and oxygen generation functions, resulting in highly efficient and intelligent improvement of indoor air quality. It also simplifies installation, reduces consumables, and saves on maintenance costs.

[0115] By utilizing the consistently positive pressure characteristic of the fresh air component, the fresh air required for oxygen production can be ensured without the need for additional dampers. Reducing the number of parts simplifies production, improves reliability, and saves space, making component design easier and more miniaturized. The positive pressure within the fresh air unit's air chamber ensures that outdoor air is drawn in without the need for additional dampers; this solves the problem of needing additional dampers when combining the oxygen generator's intake pipe with the fresh air system, simplifying production, increasing production efficiency, saving space, and improving product reliability.

[0116] The fresh air system draws in fresh outdoor air through ductwork, filtering impurities from the air as it passes through an internal filter, ensuring air cleanliness. During operation, the air chamber of the fresh air system maintains a positive pressure. The oxygen generator, when activated, supplies clean air directly through another duct within the fresh air system and a pipe designed into the ductwork, guaranteeing the air is clean outdoor air while minimizing the oxygen intake path and improving oxygen production efficiency. The combination of fresh air and oxygen generation allows for multiple state adjustments, making air quality improvement more intelligent and efficient.

[0117] When the air conditioner is turned on, the sensors on it begin to collect information about the outdoor temperature and air quality.

[0118] When the outdoor temperature H: 0°C ≥ H or H ≥ 30°C; or when the outdoor PM2.5 level is higher than the program's set value, the fresh air unit operates at low speed to maintain positive pressure within the unit, providing clean air to the oxygen generator. The oxygen generator operates at high speed to ensure the indoor oxygen concentration. This prevents the low (high) temperature outdoor air from having a significant impact on indoor air quality, or reduces the premature wear and tear on the filter caused by poor outdoor air quality.

[0119] When the outdoor temperature H: 0 degrees < H or H < 30 degrees; or when the outdoor PM2.5 is less than the program set value, the fresh air fan runs at high speed and the oxygen generator runs at low speed to improve the efficiency of indoor air quality, ensure stable indoor oxygen concentration, and reduce wear and tear on the oxygen generator.

[0120] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0121] The air conditioner provided in this application includes an indoor unit 100 comprising a fresh air assembly 300, which has a fresh air duct 301, and an outdoor unit 200 comprising an oxygen generating assembly 400 for supplying oxygen to the indoor unit. A first pipe 510 and a second pipe 520 are provided. One end of the first pipe 510 is connected to the outdoor environment, and the other end is connected to the fresh air duct 301 to introduce outdoor fresh air into the duct 301. Both ends of the second pipe 520 are connected to the fresh air duct 301 and the oxygen generating assembly 400, respectively, so that a portion of the outdoor fresh air in the fresh air duct 301 is discharged into the indoor unit, and another portion is transported through the second pipe 520 to the oxygen generating assembly 400 for oxygen generation. At least a portion of the first pipe 510 is fitted onto the second pipe 520. This design combines the air conditioner's fresh air function with its oxygen generation function. It utilizes outdoor fresh air to supply the oxygen generation component 400, eliminating the need for a separate outdoor intake and oxygen generation pipeline structure. This design significantly reduces the number of external pipelines, simplifies the air conditioner's installation process, and saves installation space. The air conditioner of this application can simultaneously meet the needs of fresh air exchange and oxygen replenishment, effectively improving indoor air quality. The introduction of fresh air ensures indoor air circulation and freshness, while the oxygen generation function ensures sufficient indoor oxygen content. Together, they create a healthier indoor environment.

[0122] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0123] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0124] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0125] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0126] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0127] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air conditioner, comprising an indoor unit (100) and an outdoor unit (200), characterized in that, The indoor unit (100) includes a fresh air assembly (300), which has a fresh air duct (301) for communicating with the indoor environment; The outdoor unit (200) includes an oxygen-generating component (400) for supplying oxygen to the indoor unit; The air conditioner also includes a piping assembly (500), which includes a first pipe fitting (510) and a second pipe fitting (520). One end of the first pipe fitting (510) is connected to the outdoor environment, and the other end of the first pipe fitting (510) is connected to the fresh air duct (301) to introduce outdoor fresh air into the fresh air duct (301). The two ends of the second pipe fitting (520) are respectively connected to the fresh air duct (301) and the oxygen generating assembly (400) so that part of the outdoor fresh air in the fresh air duct (301) is discharged into the room, and the other part is transported to the oxygen generating assembly (400) through the second pipe fitting (520) for oxygen generation. At least a portion of the first pipe fitting (510) is fitted onto the second pipe fitting (520).

2. The air conditioner according to claim 1, characterized in that, The indoor unit (100) is provided with an oxygen outlet (110), and the piping assembly (500) further includes: The third fitting has two ends connected to the oxygen generation opening of the oxygen generation assembly (400) and the oxygen outlet (110), respectively. At least a portion of the third pipe fitting is inserted inside the first pipe fitting (510).

3. The air conditioner according to claim 1, characterized in that, The inner diameter of the first pipe fitting (510) is D, and the inner diameter of the second pipe fitting is D1; Where D / D1≥2.

4. The air conditioner according to claim 2, characterized in that, The piping assembly (500) also includes: A limiting component (530) is disposed within the first pipe fitting (510), the limiting component (530) having a limiting space, and at least a portion of the second pipe fitting (520) and / or the third pipe fitting being disposed within the limiting space, so as to limit the second pipe fitting (520) and / or the third pipe fitting by means of the limiting component (530); At least a portion of the limiting member (530) is elastically disposed, and there are multiple limiting members (530), which are spaced apart along the extension direction of the first pipe (510).

5. The air conditioner according to claim 1, characterized in that, The fresh air assembly (300) also includes: A filter element (310) is disposed in the fresh air duct (301). After the outdoor fresh air is filtered by the filter element (310), the outdoor fresh air flows into the indoor space and / or the second pipe fitting (520).

6. The air conditioner according to claim 1, characterized in that, The fresh air assembly (300) includes: The mounting body (320) is installed on the indoor unit (100), and the fresh air duct (301) is installed inside the mounting body (320); The first fitting (510) and the second fitting (520) are respectively connected to the installation body (320) to communicate with the fresh air duct (301).

7. The air conditioner according to claim 6, characterized in that, The installation body (320) is also provided with a partition (330), which divides the fresh air duct (301) into a first channel (302) and a second channel (303); The partition (330) is provided with a connecting hole (331), and the first channel (302) and the second channel (303) are connected through the connecting hole (331); The first pipe fitting (510) is connected to the first channel (302), and the second pipe fitting (520) is connected to the second channel (303).

8. The air conditioner according to claim 7, characterized in that, The partition (330) includes a first plate (3301) and a second plate (3302), which are arranged at an angle to form a sound-absorbing cavity between the first plate (3301), the second plate (3302) and the inner wall of the fresh air duct (301); The connecting hole (331) includes a first connecting hole (3310) and a second connecting hole (3311). The first connecting hole (3310) is disposed on the first plate (3301), and the second connecting hole (3311) is disposed on the second plate (3302). The airflow in the first channel (302) flows sequentially through the first connecting hole (3310), the silencing cavity and the second connecting hole (3311) and then flows into the second channel (303).

9. The air conditioner according to claim 8, characterized in that, There are multiple first connecting holes (3310), and the multiple first connecting holes (3310) are spaced apart on the first plate (3301); and / or, There are multiple second connecting holes (3311), and the multiple second connecting holes (3311) are spaced apart on the second plate (3302).

10. The air conditioner according to claim 6, characterized in that, The installation body (320) also includes a connector (340), one end of which is connected to the first pipe fitting (510), and the other end of which is connected to the fresh air duct (301); Along the flow direction of the airflow within the connector (340), the cross-sectional area of ​​the flow section of the connector (340) gradually increases.

11. The air conditioner according to any one of claims 1 to 6, characterized in that, The fresh air duct (301) has an outdoor air inlet (3010), an indoor air inlet (3011), a first air outlet (3012), and a second air outlet (3013). The first air outlet (3012) is connected to the indoor environment, and the second air outlet (3013) is connected to the second duct fitting (520). The fresh air assembly (300) further includes: A switching component (350) is rotatably disposed between the outdoor air inlet (3010) and the indoor air inlet (3011) so that the outdoor air inlet (3010) and the indoor air inlet (3011) can be selectively connected to the fresh air duct (301).

12. The air conditioner according to claim 11, characterized in that, The fresh air duct (301) has a first stop (304) and a second stop (305), the first stop (304) forming the indoor air inlet (3011) and the second stop (305) forming the outdoor air inlet (3010). The switching component (350) rotates to fit against the first stop (304) to block the indoor air inlet (3011); The switching component (350) rotates to fit against the second stop (305) to block the outdoor air inlet (3010).

13. The air conditioner according to claim 12, characterized in that, The first stop portion (304) includes a first stop end face (3040), and the second stop portion (305) includes a second stop end face (3050). The plane containing the first stop end face (3040) and the plane containing the second stop end face (3050) are arranged at an angle, and the included angle is an acute angle.

14. The air conditioner according to claim 11, characterized in that, The fresh air duct (301) includes a first duct (302) and a second duct (303) that are interconnected. The first duct (302) includes a first flow section (3020) and a second flow section (3021) that are interconnected. The indoor air inlet (3011), the outdoor air inlet (3010), and the first air outlet (3012) are respectively connected to the second flow section (3021). The second air outlet (3013) is connected to the first flow section (3020). The first flow section (3020) is connected to and communicates with the first pipe fitting (510). The second pipe fitting (520) passes through the first pipe fitting (510), passes through the first flow section (3020), and communicates with the second channel (303). The outdoor air inlet (3010) is located between the first flow section (3020) and the second flow section (3021).

15. The air conditioner according to claim 1, characterized in that, The indoor unit (100) is provided with an air outlet duct (120) and an oxygen outlet (110), and the oxygen outlet (110) is located on the channel wall of the air outlet duct (120).

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