Air conditioner

Abstract

The application discloses an air conditioner, and belongs to the technical field of air treatment. The air conditioner comprises a casing, a panel, a fan, a heat exchanger, a fresh air duct, an exhaust air duct and a louver assembly. The casing is provided with a first air inlet and a second air inlet which are in communication with the outside. The panel is arranged at the bottom end of the casing, the central part of the panel is provided with an air inlet, and the panel is provided with air outlets located around the air inlet. The air inlet is in communication with the bottom end of the fan to form an air inlet channel, and the air inlet channel comprises a first air inlet channel and a second air inlet channel which are divided in an up-down manner. The fresh air duct is in communication with the first air inlet and the first air inlet channel. The exhaust air duct is in communication with the second air inlet and the second air inlet channel. The louver assembly is rotatably connected in the air inlet channel and located between the first air inlet channel and the second air inlet channel. When the louver assembly is in an open state, the first air inlet channel and the second air inlet channel are in communication. When the louver assembly is in a closed state, the first air inlet channel and the second air inlet channel are separated. The air conditioner can improve the indoor air exchange efficiency.

Description

Technical Field

[0001] This application relates to the field of air handling technology, and more particularly to an air conditioner. Background Technology

[0002] As public demand for indoor air quality continues to rise, central air conditioning and embedded commercial air conditioning systems with fresh air functions are gradually becoming the mainstream choice in the market and are widely used in various indoor scenarios such as homes, offices, and supermarkets. Among them, four-way air outlet embedded air conditioners have extremely high popularity due to their advantages of uniform air delivery, no space occupation, and strong adaptability. Their fresh air retrofit solutions mostly adopt a simplified design, only adding an independent fresh air inlet to the equipment and introducing fresh outdoor air into the room through a fan, without a matching dedicated exhaust structure.

[0003] The drawback of this type of lightweight fresh air design is that stale indoor air cannot be actively expelled, relying solely on natural channels such as gaps in doors and windows and gaps in walls for passive dissipation. In early buildings with poor sealing, this simple ventilation mode could still achieve basic air circulation, barely meeting the needs of shallow ventilation. However, with continuous upgrades in construction technology, the sealing of doors and windows and the sealing of walls in residential and commercial buildings have been continuously optimized, significantly improving the airtightness of indoor spaces and greatly compressing the channels for natural air infiltration and dissipation. Under these conditions, the operational defects of embedded air conditioning fresh air systems are amplified. The equipment continuously introduces fresh outdoor air into the room, while the channels for expelling stale indoor air are narrow and the exhaust efficiency is extremely low. The continuous influx of fresh air directly raises the indoor air pressure, creating a significant positive pressure environment. Excessive positive pressure creates reverse wind pressure, hindering the subsequent delivery of fresh air, resulting in a continuous decrease in the amount of fresh air introduced, leading to weak or imperceptible fresh air delivery, creating a vicious cycle of "obstructed air intake and stagnant exhaust." At the same time, the existing polluted air, carbon dioxide, odorous gases, and fine pollutants in the room cannot be replaced and discharged in a timely manner, resulting in a significant reduction in indoor air exchange efficiency and an inability to achieve effective ventilation. Summary of the Invention

[0004] This application addresses, to at least some extent, one of the technical problems in the related art.

[0005] This application provides an air conditioner that can improve indoor ventilation efficiency.

[0006] An air conditioner includes: a casing with an open bottom, a first air vent and a second air vent on the side wall of the casing, the first air vent for introducing fresh outdoor air into the casing, and the second air vent for exhausting indoor air to the outside; a panel located at the bottom of the casing, with an air inlet in the center of the panel and air outlets surrounding the air inlet; a fan located inside the casing, the air inlet and the bottom of the fan connecting to form an air intake channel, the air intake channel including a first air intake channel and a second air intake channel divided vertically; a heat exchanger surrounding the outside of the fan for exchanging heat with the air passing through it; and a fresh air duct connecting the first air vent and the first air intake channel. The system includes: an exhaust duct that connects the second air inlet to the second air inlet; a louvered assembly that is rotatably connected within the air inlet duct and located between the first and second air inlet ducts; when the louvered assembly is open, the first and second air inlet ducts are connected; when the louvered assembly is closed, the first and second air inlet ducts are separated; when the air conditioner introduces fresh air and exhausts air, the louvered assembly is closed, allowing fresh outdoor air to flow through the fresh air duct and the first air inlet duct to the heat exchanger, and then be delivered to the room through the air outlet, while indoor air is exhausted to the outside through the air inlet, the second air inlet duct, and the exhaust duct.

[0007] In this technical solution, by setting louver components in the air inlet channel, the first air inlet channel and the second air inlet channel are isolated and sealed by the closing of the louver components. After the first air inlet channel and the second air inlet channel are isolated, the fresh air and exhaust air do not interfere with each other, which greatly improves the ventilation efficiency.

[0008] Because the fresh air passes through a heat exchanger, the fresh air exchanges heat with the heat exchanger, which makes the temperature of the fresh air more comfortable when it is delivered to the room. This avoids the problem of large fluctuations in indoor temperature caused by fresh air being directly delivered to the room, which would affect the user experience.

[0009] When the fresh air function is turned off, the louvered components are in the open state, the air intake channel is open, and indoor air is blown out through the air intake channel, fan, heat exchanger and air outlet. The fresh air and exhaust air of the air conditioner will not affect the basic functions of the air conditioner such as cooling / heating, air supply, dehumidification, purification and self-cleaning.

[0010] In some embodiments, the air conditioner further includes: a water collection tray, disposed below the heat exchanger, for collecting condensate generated by the heat exchanger; a fresh air duct and an exhaust air duct are disposed on the water collection tray; one end of the fresh air duct is connected to a first air outlet, and the other end of the fresh air duct is connected to a first air inlet channel; one end of the exhaust air duct is connected to a second air outlet, and the other end of the exhaust air duct is connected to a second air inlet channel.

[0011] In this technical solution, by placing the fresh air duct and exhaust air duct on the water collection tray, the fresh air duct and exhaust air duct can avoid occupying the internal space of the air conditioner separately. Only the structure of the water collection tray needs to be changed, which will not have a significant impact on other parts, thus saving space and reducing costs.

[0012] In some embodiments, the air conditioner further includes: an air guide ring disposed between the panel and the fan in the height direction; a water collection tray sleeved outside the air guide ring; the inner ring of the air guide ring forming an air inlet channel; a first connecting port and a second connecting port provided on the air guide ring; a fresh air duct connected to the first connecting port; and an exhaust air duct connected to the second connecting port.

[0013] In this technical solution, by providing a first connecting port and a second connecting port on the air guide ring, the connection between the fresh air duct and the first air intake channel, as well as the connection between the exhaust air duct and the second air intake channel, can be realized.

[0014] In some embodiments, the water receiving tray is provided with air outlet connecting cavities that are respectively connected to the four air outlets. The portion of the water receiving tray located between two adjacent air outlet connecting cavities is a connecting part. Two connecting parts arranged diagonally form a group. The fresh air duct extends from the outside of one group of connecting parts toward the first air inlet channel, and the exhaust air duct extends from the outside of another group of connecting parts toward the second air inlet channel.

[0015] In this technical solution, by setting two fresh air ducts and two exhaust air ducts on the water receiving tray, the air volume can be increased, and the ventilation efficiency can be further improved.

[0016] In some embodiments, the water receiving tray is provided with a water receiving trough, and the bottom end of the heat exchanger is located in the water receiving trough; the exhaust duct is located below the water receiving trough, and the portion of the fresh air duct near the first air outlet is located below the water receiving trough.

[0017] In this technical solution, the exhaust duct and fresh air duct are located below the water receiving tank, which avoids affecting the basic water receiving function of the water receiving pan.

[0018] In some embodiments, the exhaust duct extends in a straight line; the fresh air duct includes: a straight extension section that extends in a straight line from the end of the straight extension section that connects with the first air inlet; and an upward curve section that gradually curves upward from the end of the straight extension section away from the first air inlet toward the direction of the first air intake channel.

[0019] In this technical solution, the air duct extends in a straight line, which can shorten the duct length as much as possible and reduce air resistance. The fresh air duct is equipped with an upward-curving part, which can realize the connection between the fresh air duct and the first air intake channel.

[0020] In some embodiments, the louver assembly includes: an outer frame portion connected to the inner wall of the air inlet duct; and a plurality of louvers arranged in the outer frame portion in a direction perpendicular to the height direction, wherein the louvers are rotatably connected to the outer frame portion.

[0021] In this technical solution, the louver assembly is designed as a structure of the outer frame and the louvers, which makes the louver assembly a whole. The louver assembly is installed into the air inlet channel as a whole structure, which can improve the convenience and efficiency of assembly.

[0022] In some embodiments, the air conditioner further includes: an exhaust module connected to the outside of the housing corresponding to the second air outlet; the exhaust module includes: an exhaust housing with an exhaust pipe interface for connecting to the outside through the duct; and an exhaust fan located inside the exhaust housing for driving airflow.

[0023] In this technical solution, by setting an exhaust module, power can be provided for the exhaust, ensuring the efficiency of the air conditioner's exhaust to the outside. The exhaust module is connected to the outside of the casing, avoiding the structural complexity and difficulty brought about by integrating the exhaust module into the air conditioner. This application only needs to connect the exhaust module to the casing, which is simple in structure, has high assembly efficiency, and is also relatively low in cost.

[0024] In some embodiments, the air conditioner further includes: a fresh air module connected to the outside of the housing corresponding to the first air outlet; the fresh air module includes: a fresh air housing with a fresh air duct interface for connecting to the outside through a duct; and a fresh air fan located inside the fresh air housing for driving airflow.

[0025] In this technical solution, by setting a fresh air module, the power of the fresh air can be improved, ensuring the efficiency of the air conditioner in introducing fresh air. The fresh air module is connected to the outside of the casing, avoiding the structural complexity and difficulty brought about by integrating the fresh air module into the air conditioner. This application only needs to connect the fresh air module to the casing, which is simple in structure, has high assembly efficiency, and is also relatively low in cost.

[0026] In some embodiments, the fresh air module includes a fresh air filter, disposed between the fresh air duct interface and the fresh air fan, for filtering outdoor fresh air from the fresh air duct interface.

[0027] In this technical solution, by installing a fresh air filter upstream of the fresh air fan, the outdoor fresh air can be cleaned and sterilized, while also preventing dust and other particles from adhering to the fresh air fan and affecting its lifespan.

[0028] In some embodiments, the exhaust module further includes an exhaust valve for opening or closing the exhaust pipe interface; the fresh air module further includes a fresh air valve for opening or closing the fresh air pipe interface.

[0029] In this technical solution, by setting exhaust air valves and fresh air valves, when the fresh air mode of the air conditioner is turned off, the air valves are in the closed state, which can prevent outdoor air from flowing back into the room during windy and rainy weather, causing abnormal phenomena such as pipe noise, and effectively keep the inside of the product clean.

[0030] In some embodiments, a first air valve is provided in the fresh air duct for opening or closing the fresh air duct; a second air valve is provided in the exhaust air duct for opening or closing the exhaust air duct.

[0031] In this technical solution, the first air valve closes the fresh air duct and the second air valve closes the exhaust air duct, which can prevent indoor air from entering the fresh air duct and exhaust air duct when the air conditioner is in non-fresh air mode. Attached Figure Description

[0032] Figure 1 A perspective view of an air conditioner according to some embodiments is shown; Figure 2 A perspective view of an air conditioner according to some embodiments is shown from another angle; Figure 3 A top view of an air conditioner according to some embodiments is shown; Figure 4 It shows Figure 3 Sectional view in the middle CC direction Figure 1 ; Figure 5 It shows Figure 3 Sectional view in the middle CC direction Figure 2 ; Figure 6 A perspective view of a water tray for an air conditioner according to some embodiments is shown; Figure 7 It shows Figure 3 Sectional view along the BB direction; Figure 8 It shows Figure 3 Sectional view along the middle AA direction; Figure 9 A cross-sectional view of the fresh air module of an air conditioner according to some embodiments is shown; Figure 10 A cross-sectional view of the exhaust module of an air conditioner according to some embodiments is shown; Figure 11 A perspective view of the fresh air duct and exhaust air duct of an air conditioner according to some embodiments is shown; Figure 12 A perspective view of a louver assembly of an air conditioner according to some embodiments is shown; Figure 13 A cross-sectional view of the water tray and louvers of an air conditioner according to some embodiments is shown.

[0033] In the above figures, 10. Housing; 11. Frame; 12. Insulation panel; 13. Main side panel; 14. Connecting plate; 15. Air outlet duct; 16. Air inlet duct; 161. First air inlet duct; 162. Second air inlet duct; 17. First air outlet; 18. Second air outlet; 20. Panel; 21. Air inlet; 22. Air outlet; 30. Fan; 40. Heat exchanger; 50. Water tray; 51. Air inlet connecting cavity; 52. Air outlet connecting cavity; 53. Fresh air duct; 531. First air valve; 532. Straight extension section; 533. Upward-curving section; 54. Exhaust air duct; 541. Second air valve; 55. Connecting part; 56. Water tray. 60. Slot; 61. Air guide ring; 62. First connecting port; 63. Second connecting port; 70. Louver assembly; 71. Outer frame; 72. Louver; 73. Motor; 74. Drive gear; 75. Driven gear; 80. Fresh air module; 81. Fresh air housing; 811. Connecting wall; 8111. Fixing plate; 8112. Insulation board; 812. Transition channel; 813. Fresh air duct interface; 82. Fresh air fan; 83. Fresh air filter; 84. Fresh air valve; 85. Air outlet flange; 90. Exhaust module; 91. Exhaust housing; 911. Exhaust duct interface; 92. Exhaust fan; 93. Exhaust filter; 94. Exhaust valve. Detailed Implementation

[0034] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0035] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In this application, the air conditioner performs a refrigeration cycle by using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0039] The compressor compresses refrigerant gas at a low temperature and low pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0040] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve, returning the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0041] The outdoor unit of an air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner includes the indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit.

[0042] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0043] This application relates to an air conditioner for conditioning indoor spaces. In the following text, for convenience, the indoor unit including the indoor heat exchanger is referred to as an air conditioner, and the indoor heat exchanger is referred to as a heat exchanger.

[0044] The following is in conjunction with the appendix Figures 1 to 13 The implementation methods of this application are described in detail below: The air conditioner in this application can be a recessed air conditioner installed in the ceiling, but the implementation of this application is not limited to this.

[0045] Reference Figures 1 to 4An air conditioner according to an embodiment of this application includes a housing 10. The housing 10 defines an installation space, within which other components of the air conditioner are disposed. The housing 10 includes a frame 11 and an insulation panel 12. The insulation panel 12 is attached to the inner wall of the frame 11.

[0046] The housing 10 has four main side plates 13, which are located in four directions. Viewed from above, the lines containing the four main side plates 13 form a quadrilateral. The housing 10 also has four connecting plates 14 that connect adjacent main side plates 13.

[0047] The top and sides of the housing 10 are closed. The bottom of the housing 10 is open, allowing other components to be installed into the mounting space from the open end of the housing 10.

[0048] The air conditioner includes a panel 20. The panel 20 is located at the bottom of the housing 10. In a typical installation scenario, the housing 10 is installed in the ceiling by means of a sling, and the panel 20 is exposed at the ceiling.

[0049] Viewed from below, panel 20 is quadrilateral. In other embodiments, panel 20 may be circular. The four sides of panel 20 correspond to a main side panel 13 of housing 10, that is, the side of panel 20 is parallel to the main side panel 13 of housing 10 on the corresponding side.

[0050] An air inlet 21 is provided in the center of the panel 20 for allowing indoor air to enter the air conditioner, that is, collecting indoor air into the air conditioner through the air inlet 21. An air intake grille for filtering air can be provided at the air inlet 21.

[0051] An air outlet 22 is provided in each of the four directions around the air inlet 21, for supplying air from the air conditioner to the room, that is, supplying air to the room through the air outlet 22. Each air outlet 22 is provided corresponding to one side of the panel 20, and the air outlet 22 is elongated, with its length extending parallel to the side of the corresponding panel 20.

[0052] An air guide plate can be installed at the air outlet 22 to guide the direction of airflow; in addition, the air guide plate can close the air outlet 22.

[0053] Reference Figure 4 The air conditioner includes a fan 30. The fan 30 is installed within the mounting space of the housing 10. The fan 30 can be suspended inside the housing 10, and the motor of the fan 30 is connected and fixed to the top wall of the housing 10; the fan blades of the fan 30 are connected to the output shaft of the motor.

[0054] The air conditioner includes a heat exchanger 40. The heat exchanger 40 is arranged around a fan 30 and is used to transfer heat to or absorb heat from the air driven by the fan 30. There is a space between the outer ring of the heat exchanger 40 and the inner wall of the housing 10, which forms an air outlet duct 15, which is vertically connected to the air outlet 22.

[0055] The heat exchanger 40 can adopt a commonly used finned tube structure. The heat exchanger 40 includes refrigerant tubes and fins extending through the refrigerant tubes. The refrigerant flows inside the refrigerant tubes, and the fins mainly improve the heat exchange efficiency between the refrigerant and the indoor air by increasing the surface area of ​​the refrigerant tubes.

[0056] Reference Figure 4 and Figure 6 The air conditioner includes a condensate tray 50. The condensate tray 50 is located below the heat exchanger 40 and is used to collect condensate generated on the heat exchanger 40. An air inlet connecting cavity 51 is formed in the center of the condensate tray 50, and the air inlet connecting cavity 51 communicates with the air inlet 21. The condensate tray 50 has four air outlet connecting cavities 52, which are located in four directions around the outer periphery of the air inlet connecting cavity 51. The air outlet connecting cavities 52 connect the air outlet passage 15 and the air outlet 22, allowing air passing through the heat exchanger 40 to flow from the air outlet passage 15 to the air outlet 22.

[0057] Continue to refer to Figure 4 The air conditioner includes an air guide ring 60. The air guide ring 60 is connected to the water collection tray 50 and is located below the fan 30, and is used to guide the air from the air inlet 21 to the fan 30.

[0058] In this application, the channel connecting the air inlet 21 and the fan 30 is referred to as the air inlet channel 16. (Refer to reference...) Figure 4 and Figure 5 , Figure 5 The middle arrow indicates the direction of indoor air flow. When the indoor air is circulated, the fan 30 operates, causing indoor air to enter through the air inlet 21, then flow through the air inlet channel 16 to the fan 30, then through the fan 30 to the heat exchanger 40, and the air through the heat exchanger 40 continues to flow through the air outlet channel 15, the air outlet connecting cavity 52 of the water tray 50 to the air outlet 22, and then circulates into the room through the air outlet 22.

[0059] In some embodiments, refer to Figure 3 and Figure 7 , Figure 7 The middle arrow indicates the direction of outdoor fresh air flow. The air conditioner includes a fresh air duct 53, which is used to send outdoor fresh air to the air intake duct 16.

[0060] A first air vent 17 is provided on the side wall of the housing 10. In the current example, the first air vent 17 is located on the connecting plate 14 of the housing 10. The first air vent 17 communicates with the outdoor space, and outdoor fresh air is collected into the air conditioner through the first air vent 17.

[0061] The fresh air duct 53 connects the first air outlet 17 and the air inlet duct 16, delivering outdoor fresh air to the air inlet duct 16. The outdoor fresh air then passes through the air inlet duct 16, fan 30, heat exchanger 40, and air outlet duct 15 within the air conditioner, before being delivered indoors through the air outlet 22. Introducing fresh air into the room improves indoor air quality and increases indoor air freshness.

[0062] In some embodiments, refer to Figure 3 and Figure 8 , Figure 8 The middle arrow indicates the direction of indoor air flow when the air conditioner exhausts air. The air conditioner includes an exhaust duct 54, which is used to exhaust indoor air to the outside.

[0063] A second air vent 18 is provided on the side wall of the housing 10. In the current example, the second air vent 18 is located on the connecting plate 14 of the housing 10. The second air vent 18 communicates with the outdoor space, and indoor air is exhausted to the outside through the second air vent 18.

[0064] The exhaust duct 54 connects the second air inlet 18 and the air inlet channel 16. Indoor air flows through the air inlet 21 and the air inlet channel 16 to the exhaust duct 54, and then continues to be exhausted to the outside through the exhaust duct 54, thus realizing the exhaust function of the air conditioner. By exhausting indoor air (also known as stale air), indoor air quality is improved.

[0065] In some embodiments, refer to Figure 4 The air conditioner includes a louver assembly 70. The louver assembly 70 is rotatably connected to the middle of the air inlet channel 16 in the height direction. The air inlet channel 16 above the louver assembly 70 is a first air inlet channel 161, and the air inlet channel 16 below the louver assembly 70 is a second air inlet channel 162. The louver assembly 70 is used to connect or separate the first air inlet channel 161 and the second air inlet channel 162.

[0066] The louver assembly 70 has an open state and a closed state. When the louver assembly 70 is in the closed state, the louver assembly 70 separates the first air inlet channel 161 and the second air inlet channel 162. When the louver assembly 70 is in the open state, the first air inlet channel 161 and the second air inlet channel 162 are connected through the open louver assembly 70.

[0067] Reference Figure 7 and Figure 8 The fresh air duct 53 is connected to the first air intake channel 161, and the exhaust air duct 54 is connected to the second air intake channel 162.

[0068] When the air conditioner simultaneously introduces fresh air and exhausts air, the louver assembly 70 is in the closed state. The first air intake channel 161 and the second air intake channel 162 are separated by the louver assembly 70. The outdoor fresh air flows to the heat exchanger 40 through the fresh air duct 53 and the first air intake channel 161, and is then sent to the room through the air outlet 22. At the same time, the indoor air is exhausted to the outside through the air inlet 21, the second air intake channel 162, and the exhaust duct 54.

[0069] Most existing air conditioners only have the function of supplying fresh air into the room and do not have the function of exhausting air outwards, resulting in poor improvement in indoor air quality.

[0070] The air conditioner of this application incorporates a louvered assembly 70 within the air intake duct 16. When the louvered assembly 70 is fully closed, the first air intake duct 161 and the second air intake duct 162 are physically separated, forming independent fresh air and exhaust air pathways. This completely eliminates the problems of airflow collision, crossflow, and mutual interference during the introduction of fresh air and the exhaust of polluted air. This structural design fundamentally overcomes the drawbacks of traditional single-channel, non-isolated ventilation structures, effectively avoiding the accumulation of positive pressure indoors and the attenuation of fresh air intake, ensuring a stable and sufficient supply of fresh air into the room, while simultaneously achieving efficient and orderly exhaust of polluted indoor air, thus constructing a complete and smooth indoor-outdoor air circulation system.

[0071] Through the structural optimization of dual-channel isolation and sealing, the equipment's air exchange efficiency has been greatly improved, enabling continuous and efficient indoor air replacement. It can quickly reduce the concentration of harmful substances such as carbon dioxide, odors, and fine pollutants, significantly improve indoor air quality, and accurately adapt to the ventilation needs of modern high-sealing buildings. It effectively solves the industry problem of insufficient practicality of the fresh air function of traditional embedded air conditioners.

[0072] Therefore, the closure of the louver assembly 70 achieves the isolation and sealing of the first air intake channel 161 and the second air intake channel 162, so that the fresh air and exhaust air do not interfere with each other, greatly improving the ventilation efficiency and improving the quality of indoor air.

[0073] Since the fresh air passes through the heat exchanger 40, the fresh air exchanges heat with the heat exchanger 40, which makes the temperature of the fresh air more comfortable when it is sent into the room. This avoids the problem of large fluctuations in indoor temperature caused by the fresh air being sent directly into the room, which would affect the user experience.

[0074] When the fresh air function is turned off and the indoor air is circulating, the louver assembly 70 is in the open state, the air inlet channel 16 is connected, and the indoor air is blown out through the air inlet channel 16, fan 30, heat exchanger 40, and air outlet 22. The fresh air and exhaust air of the air conditioner will not affect the basic functions of the air conditioner such as cooling / heating, air supply, dehumidification, purification, and self-cleaning.

[0075] In some embodiments, continue to refer to Figure 4 The air guide ring 60 is positioned vertically between the panel 20 and the fan 30, and the water receiving tray 50 is fitted around the air guide ring 60. The inner ring of the air guide ring 60 forms an air inlet channel 16, and the air guide ring 60 is provided with a first connecting port 61 and a second connecting port 62.

[0076] One end of the fresh air duct 53 is connected to the first connecting port 61, and the other end of the fresh air duct 53 is connected to the first air outlet 17; one end of the exhaust air duct 54 is connected to the second connecting port 62, and the other end of the exhaust air duct 54 is connected to the second air outlet 18.

[0077] In some embodiments, refer to Figure 7 and Figure 9 The arrows in the diagram indicate the direction of outdoor fresh air flow. The air conditioner includes a fresh air module 80. The fresh air module 80 is connected to the outside of the casing 10 corresponding to the first air outlet 17, and is used to facilitate the entry of outdoor fresh air into the fresh air duct 53. The fresh air module 80 can be connected to the outside via an air duct.

[0078] The fresh air module 80 includes a fresh air housing 81, which is connected to the housing 10. The fresh air housing 81 can be configured to be cuboid in shape.

[0079] The fresh air module 80 includes a fresh air fan 82. The fresh air fan 82 is located inside the fresh air housing 81 and is used to drive the flow of outdoor fresh air. Specifically, the fresh air fan 82 can be a centrifugal fan.

[0080] In some embodiments, the fresh air housing 81 includes a connecting wall 811 disposed near the housing 10. A transition channel 812 is provided on the connecting wall 811. The transition channel 812 extends from the inner wall surface of the connecting wall 811 to the outer wall surface of the connecting wall 811.

[0081] The inner end of the transition channel 812 is connected to the exhaust port of the fresh air fan 82. The outer end of the transition channel 812 is connected to the first air outlet 17.

[0082] Since the first air vent 17 of the casing 10 is located at a relatively low height, the exhaust vent of the fresh air fan 82 cannot be directly opposite the first air vent 17. Therefore, this application provides a transition channel 812 on the connecting wall 811 to connect the exhaust vent of the fresh air fan 82 with the first air vent 17.

[0083] In some embodiments, the connecting wall 811 may include two fixing plates 8111 and an insulation plate 8112 sandwiched between the two fixing plates 8111.

[0084] The inner fixing plate 8111 is provided with an inner port that is connected to the exhaust port of the fresh air fan 82, and the outer fixing plate 8111 is provided with an outer port that is connected to the first air outlet 17. The inner port and the outer port are connected to form a transition channel 812.

[0085] In some embodiments, the fresh air housing 81 is provided with a fresh air duct interface 813. The fresh air duct interface 813 is located at the end of the fresh air housing 81 opposite to the connecting wall 811.

[0086] The fresh air module 80 is equipped with a fresh air filter 83. The fresh air filter 83 is located inside the fresh air housing 81, corresponding to the fresh air duct interface 813. Specifically, the fresh air filter 83 is located between the fresh air duct interface 813 and the fresh air fan 82, and is used to filter outdoor fresh air to prevent outdoor fresh air from polluting the fresh air fan 82.

[0087] An air vent flange 85 can be installed at the fresh air duct interface 813, and the air vent flange 85 is connected to the air duct. A fresh air valve 84 is installed at the air vent flange 85. The fresh air valve 84 is used to open or close the fresh air duct interface 813.

[0088] This application includes an air outlet flange 85 at the fresh air duct interface 813, which enables reliable connection between the fresh air duct and the equipment, ensuring the sealing of the pipeline connection and ease of installation. Simultaneously, a fresh air valve 84 is installed at the air outlet flange 85, which can autonomously switch between opening and closing the fresh air duct interface 813 according to the equipment's operating status.

[0089] When the air conditioner's fresh air function is turned off, the fresh air valve 84 remains closed, effectively blocking the fresh air duct passage. This prevents outdoor airflow and rainwater from flowing back into the room through the fresh air duct during windy or rainy weather, completely eliminating abnormal problems such as noise and water leakage caused by backflow, thus improving the user experience. Furthermore, it isolates outdoor dust and debris from entering the equipment during non-fresh air operation, maintaining the cleanliness of the internal structure, significantly protecting the fresh air filter 83, effectively extending its lifespan, reducing maintenance costs and frequency, and further optimizing the overall performance and practicality of the product.

[0090] In some embodiments, refer to Figure 8 and Figure 10 The arrows in the diagram indicate the direction of indoor air flow during exhaust. The air conditioner includes an exhaust module 90. The exhaust module 90 is connected to the outside of the housing 10, corresponding to the second air vent 18, and is used to expel indoor air to the outside. The exhaust module 90 can be connected to the outside via a duct.

[0091] The exhaust module 90 includes an exhaust housing 91, which is connected to the housing 10. The exhaust housing 91 may be configured in a cuboid shape.

[0092] The exhaust module 90 includes an exhaust fan 92. The exhaust fan 92 is located inside the exhaust housing 91 and is used to drive the flow of outdoor fresh air. Specifically, the exhaust fan 92 can be a centrifugal fan.

[0093] The exhaust module 90 has an exhaust duct interface 91 on its exhaust housing 91. The exhaust outlet of the exhaust fan 92 is located corresponding to the exhaust duct interface 911. The exhaust housing 91 has a through-hole on its side wall near the housing 10, which communicates with the second air outlet 18. The exhaust module 90 has an exhaust filter 93 inside, which is located between the through-hole and the exhaust fan 92 and is used to filter indoor air.

[0094] An air vent flange 85 can be installed at the exhaust duct interface 911 for connection to the duct. An exhaust damper 94 is located at the air vent flange 85. The exhaust damper 94 is used to open or close the exhaust duct interface 911. When the exhaust function is off, the exhaust damper 94 is closed, preventing outdoor air from flowing back into the room during windy or rainy weather, thus avoiding abnormal phenomena such as duct noise and effectively maintaining internal cleanliness, thereby extending the service life of the exhaust module 90.

[0095] When the air conditioner introduces fresh air, the fresh air valve 84 of the fresh air module 80 is open, making the fresh air module 80 connected. When the air conditioner exhausts air, the exhaust valve 94 of the exhaust module 90 is open, making the exhaust module 90 connected.

[0096] In some embodiments, refer to Figure 7 The fresh air duct 53 is equipped with a first air valve 531, which is used to open or close the fresh air duct 53. When the fresh air function is turned off, the first air valve 531 is in the closed state, which can isolate indoor air from flowing to the fresh air module 80 and improve the service life of the fresh air module 80.

[0097] The first air valve 531 can be installed at one end of the fresh air duct 53 near the air inlet channel 16, which is conducive to the installation of the first air valve 531 into the fresh air duct 53.

[0098] Reference Figure 8 The exhaust duct 54 is equipped with a second air valve 541, which is used to open or close the exhaust duct 54. When the exhaust function is turned off, the second air valve 541 is in the closed state, which can isolate the indoor air flow to the exhaust module 90 and improve the service life of the exhaust module 90.

[0099] The second air valve 541 can be installed at one end of the exhaust duct 54 near the air inlet duct 16, which is beneficial for the installation of the second air valve 541 into the exhaust duct 54.

[0100] In some embodiments, refer to Figure 6The fresh air duct 53 and the exhaust air duct 54 are located on the water receiving tray 50. The fresh air duct 53 and the exhaust air duct 54 can be integrally foamed with the water receiving tray 50. The molding process of the fresh air duct 53 and the exhaust air duct 54 is relatively simple and the manufacturing cost is low.

[0101] The drip tray 50 may include a tray body layer and an insulation layer. The tray body layer forms the main structure of the drip tray 50 and may be made of plastic and injection molded. The insulation layer is connected to the lower end of the tray body layer to prevent condensation from forming on the side of the drip tray 50 away from the drip area. The fresh air duct 53 and the exhaust air duct 54 may be pre-embedded in foam material and foamed integrally with the insulation layer.

[0102] In this application, the fresh air duct 53 and the exhaust air duct 54 are located on the water collection tray 50. Only the structure of the water collection tray 50 needs to be modified, and other parts of the air conditioner do not need to be significantly changed, thus simplifying the product structure and reducing costs. In addition, the design of both the fresh air duct 53 and the exhaust air duct 54 on the water collection tray 50 makes the duct structure more compact and does not require increasing the size of the air conditioner.

[0103] In some embodiments, the portion of the water tray 50 located between two adjacent air outlet communication chambers 52 is a connecting portion 55. The water tray 50 includes four connecting portions 55 located at the four corners respectively.

[0104] The fresh air duct 53 extends from the outer side of one of the four connecting parts 55 toward the center of the water receiving tray 50. The exhaust air duct 54 extends from the outer side of one of the other three connecting parts 55 toward the center of the water receiving tray 50.

[0105] The first air vent 17 has one corresponding fresh air duct 53, and the fresh air module 80 is configured to correspond to the first air vent 17. The second air vent 18 has one corresponding exhaust air duct 54, and the exhaust air module 90 is configured to correspond to the second air vent 18.

[0106] In some embodiments, there are two fresh air ducts 53, each extending from the outer side of one of the two connecting portions 55 toward the center of the water receiving tray 50. There are two exhaust air ducts 54, each extending from the outer side of one of the two connecting portions 55 toward the center of the water receiving tray 50.

[0107] The first air vent 17 has two corresponding to the two fresh air ducts 53, and the fresh air module 80 has two corresponding to the first air vent 17. The second air vent 18 has two corresponding to the two exhaust air ducts 54, and the exhaust air module 90 has two corresponding to the second air vent 18.

[0108] This configuration results in two fresh air ducts 53 and two exhaust air ducts 54. The two fresh air ducts 53 can simultaneously supply outdoor fresh air, improving the efficiency of the air conditioner in introducing fresh air. The two exhaust air ducts 54 simultaneously supply indoor air, improving the efficiency of the air conditioner in exhausting indoor air.

[0109] In some embodiments, two diagonally arranged connecting portions 55 of the water receiving tray 50 form a group. The water receiving tray 50 includes two groups of connecting portions 55. The fresh air duct 53 extends from the outer side of one group of connecting portions 55 toward the center of the water receiving tray 50, and the exhaust air duct 54 extends from the outer side of the other group of connecting portions 55 toward the center of the water receiving tray 50.

[0110] In this application, by arranging two fresh air ducts 53 diagonally along the water receiving tray 50, the outlet distance of the two fresh air ducts 53 can be made larger, avoiding the two airflows from being too close to each other in the first air inlet channel 161 and thus affecting each other. By arranging two exhaust air ducts 54 diagonally along the water receiving tray 50, the inlet distance of the two exhaust air ducts 54 can be made larger, avoiding the two airflows from being too close to each other in the second air inlet channel 162 and thus affecting each other.

[0111] In some embodiments, refer to Figure 4 The water receiving tray 50 is provided with a water receiving trough 56, and the bottom end of the heat exchanger 40 is located in the water receiving trough 56.

[0112] The exhaust duct 54 is located below the water receiving tank 56. At least the portion of the fresh air duct 53 near the first air inlet 17 is located below the water receiving tank 56.

[0113] In this application, at least a portion of the exhaust duct 54 and the fresh air duct 53 are located below the water receiving tank 56, so that the exhaust duct 54 and the fresh air duct 53 can be staggered from the water receiving tank 56, thus avoiding the ducts from affecting the basic water receiving function of the water receiving tray 50.

[0114] In some embodiments, refer to Figure 11 The fresh air duct 53 includes a straight extension section 532. The straight extension section 532 extends in a straight line from the end that connects with the first air outlet 17. The straight extension section 532 reduces the airflow resistance of the fresh air duct 53.

[0115] The fresh air duct 53 includes an upward-curving section 533. The upward-curving section 533 gradually curves upward from the end of the straight extension section 532 away from the first air outlet 17 towards the center of the water receiving tray 50 to the first air inlet channel 161. Since the first air inlet channel 161 is located above the straight extension section 532 in the height direction, the upward-curving section 533 can connect the straight extension section 532 and the first air inlet channel 161.

[0116] The upward-curved section 533 is connected to the straight section 532 at an angle. The upward-curved section 533 can extend in an arc shape, which can ensure the smoothness of the fresh air duct 53, thereby reducing the duct resistance.

[0117] The straight extension section 532 is located below the water receiving tank 56, and the upturned section 533 is located on the side of the water receiving tank 56 near the air inlet channel 16.

[0118] In some embodiments, the exhaust duct 54 may extend in a straight line along its length. This arrangement allows the exhaust duct 54 to be shorter, reducing duct resistance.

[0119] In some embodiments, the cross-section of the fresh air duct 53 is waist-shaped. The cross-section of the exhaust air duct 54 is also waist-shaped. It should be noted that the cross-section refers to the section perpendicular to the airflow direction within the duct.

[0120] The waist-shaped perforation extends laterally, and the height of the fresh air duct 53 / exhaust air duct 54 is relatively small, which allows the fresh air duct 53 / exhaust air duct 54 to be arranged on the water receiving tray 50 while maximizing the cross-sectional area of ​​the duct to ensure the air volume of fresh air / exhaust air introduced.

[0121] In some embodiments, refer to Figure 12 The louver assembly 70 includes an outer frame portion 71. The outer frame portion 71 is connected to the inner wall of the air inlet duct 16. In the current example, the outer frame portion 71 is connected to the air guide ring 60. The outer frame portion 71 is annular. The outer frame portion 71 can be connected to the air guide ring 60 by at least one method such as a screw fastener or a snap-fit.

[0122] Multiple louvers 72 are arranged laterally and rotatably connected within the outer frame portion 71. In one example, the two ends of the louvers 72 in the longitudinal direction are provided with pivots, which are inserted into the outer frame portion 71.

[0123] The louvers 72 extend laterally along their length. When the width direction of the louvers 72 is vertically oriented, a gap is formed between adjacent louvers 72, and the louvers 72 are in the open state, allowing air to circulate through the gap. When the width direction of the louvers 72 is horizontally oriented, the louvers 72 press against each other, blocking the inner space of the outer frame 71, and the louvers 72 are in the closed state, separating the first air inlet channel 161 and the second air inlet channel 162.

[0124] In some embodiments, refer to Figure 13 The drive mechanism that drives the louver 72 to rotate can be a structure driven by a motor 73 and a gear transmission.

[0125] The output end of the motor 73 is connected to the driving gear 74, and the driven gear 75 is connected to the rotating shaft of the louver 72. The driving gear 74 meshes with the driven gear 75, and the motor 73 drives the gear to rotate, thereby driving the louver 72 to rotate.

[0126] The louvers 72 are connected by a connecting rod. All the louvers 72 rotate synchronously under the drive of the connecting rod.

[0127] In some embodiments, the water receiving tray 50 is provided with a recessed space, which is formed by the inner wall of the water receiving tray 50 being recessed in a direction away from the center of the water receiving tray 50. The opening end of the recessed space faces the air inlet channel 16.

[0128] The motor 73 is located in the recessed space, and the shaft of the louver 72 that connects to the gear extends through the outer frame 71 into the recessed space, so that the driven gear 75 can be located in the recessed space.

[0129] The motor 73 can be fixed inside the motor box, which is connected to the air guide ring 60. The motor box has threaded holes, through which screws pass to connect the air guide ring 60, thereby enabling the installation of the motor box.

[0130] When the air conditioner only introduces fresh air, the louver assembly 70 is closed, the fresh air valve 84 and the first air valve 531 are open, and the second air valve 541 and the exhaust air valve 94 are closed. The fresh air fan 82 and the fan 30 operate, and the fresh air module 80 draws in outdoor fresh air. After being filtered by the fresh air filter 83, the outdoor fresh air is sent into the first air intake channel 161 through the fresh air duct 53. The fan 30 rotates to form a negative pressure zone above the air guide ring 60. Finally, the outdoor fresh air passes through the fan 30 and the heat exchanger 40, and is sent into the room through the air outlet 22.

[0131] When the air conditioner only exhausts air to the outside, the louver assembly 70 is in the closed state, the second air valve 541 and the exhaust air valve 94 are in the open state, the first air valve 531 and the fresh air valve 84 are in the closed state, the exhaust fan 92 is running, and the exhaust module 90 causes indoor air to be sent into the exhaust air duct 54 through the air inlet 21 and the second air inlet channel 162, and finally discharged to the outside through the exhaust module 90.

[0132] When the air conditioner simultaneously introduces fresh air and exhausts air, the louver assembly 70 is in the closed state, while the first air valve 531, fresh air valve 84, second air valve 541, and exhaust air valve 94 are in the open state. The fresh air fan 82, exhaust fan 92, and fan 30 are all running. The fresh air module 80 draws in outdoor fresh air, which is filtered by the fresh air filter 83 and then sent into the first air intake channel 161 through the fresh air duct 53. The fan 30 rotates to form a negative pressure zone above the air guide ring 60. Finally, the outdoor fresh air passes through the fan 30 and heat exchanger 40 and is sent into the room through the air outlet 22. The exhaust module 90 sends indoor air into the exhaust duct 54 through the air inlet 21 and the second air intake channel 162, and finally exhausts it to the outside through the exhaust module 90.

[0133] When the air conditioner turns off the fresh air function and operates in indoor air circulation mode, the louver assembly 70 is in the open state, the first air valve 531, the fresh air valve 84, the second air valve 541, and the exhaust air valve 94 are in the closed state, the fan 30 is running, so that indoor air enters the air intake channel 16 through the air inlet 21, and then passes through the fan 30 and the heat exchanger 40, and is sent to the room through the air outlet 22.

[0134] When the air conditioner simultaneously introduces fresh air and circulates indoor air, the louver assembly 70 is in the open state, the first air valve 531 and the fresh air valve 84 are in the open state, and the second air valve 541 and the exhaust air valve 94 are in the closed state. Outdoor fresh air enters the air intake channel 16 through the fresh air duct 53, and indoor air enters the air intake channel 16 through the air inlet 21. Outdoor fresh air and indoor air mix in the air intake channel 16, and then pass through the fan 30 and the heat exchanger 40 before being sent to the room through the air outlet 22.

[0135] As described above, in the air conditioner of this application, by providing a louver assembly 70 in the air inlet duct 16, the fresh air path and the exhaust air path can be separated, so that the fresh air and exhaust air do not affect each other, thereby improving the air exchange efficiency of the air conditioner.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0137] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An air conditioner, characterized in that, include: The casing is open at the bottom, and a first air vent and a second air vent are provided on the side wall of the casing. The first air vent is used to introduce fresh outdoor air into the casing, and the second air vent is used to exhaust indoor air to the outside. A panel is located at the bottom of the housing. An air inlet is provided in the center of the panel, and air outlets are provided around the air inlet on the panel. A fan is disposed inside the housing. The air inlet is connected to the bottom of the fan to form an air intake channel. The air intake channel includes a first air intake channel and a second air intake channel that are divided into upper and lower sections. A heat exchanger, surrounding the outside of the fan, is used to exchange heat with the air passing through it; The fresh air duct connects the first air outlet to the first air intake channel; An exhaust duct connects the second air inlet to the second air inlet channel; A louver assembly is rotatably connected within the air inlet channel and located between the first air inlet channel and the second air inlet channel; when the louver assembly is in the open state, the first air inlet channel and the second air inlet channel are connected; when the louver assembly is in the closed state, the first air inlet channel and the second air inlet channel are separated. When the air conditioner introduces fresh air and exhausts air to the outside, the louver assembly is in the closed state, so that the outdoor fresh air flows to the heat exchanger through the fresh air duct and the first air inlet channel, and is then sent to the room through the air outlet. At the same time, the indoor air is exhausted to the outside through the air inlet, the second air inlet channel, and the exhaust duct.

2. The air conditioner according to claim 1, characterized in that, The air conditioner also includes: A water collection tray is located below the heat exchanger to collect the condensate produced by the heat exchanger. The fresh air duct and the exhaust air duct are located on the water collection tray. One end of the fresh air duct is connected to the first air outlet, and the other end of the fresh air duct is connected to the first air inlet channel; one end of the exhaust air duct is connected to the second air outlet, and the other end of the exhaust air duct is connected to the second air inlet channel.

3. The air conditioner according to claim 2, characterized in that, The water receiving tray is provided with a water receiving groove, and the bottom end of the heat exchanger is located in the water receiving groove; The exhaust duct is located below the water receiving tank, and the fresh air duct, at least the portion near the first air outlet, is located below the water receiving tank.

4. The air conditioner according to claim 3, characterized in that, The exhaust duct extends in a straight line; The fresh air duct includes: The straight extension section extends in a straight line from the end that connects with the first air outlet. The upward-curving section gradually curves upward from the end of the straight extension section away from the first air inlet towards the direction closer to the first air inlet channel.

5. The air conditioner according to claim 2, characterized in that, The air conditioner also includes: An air guide ring is disposed between the panel and the fan in the height direction. The water receiving tray is sleeved on the outside of the air guide ring. The inner ring of the air guide ring is through to form the air inlet channel. The air guide ring is provided with a first connecting port and a second connecting port. The fresh air duct is connected to the first connection port; the exhaust air duct is connected to the second connection port.

6. The air conditioner according to claim 2, characterized in that, The water receiving tray is provided with air outlet connecting cavities that correspond to and communicate with the four air outlets respectively. The part of the water receiving tray located between two adjacent air outlet connecting cavities is a connecting part; two connecting parts arranged diagonally form a group. The fresh air duct extends from the outside of a set of connecting parts into the first air inlet channel, and the exhaust air duct extends from the outside of another set of connecting parts into the second air inlet channel.

7. The air conditioner according to any one of claims 1-6, characterized in that, The louver assembly includes: The outer frame is connected to the inner wall of the air inlet channel; Multiple louvers are arranged in a direction perpendicular to the height direction within the outer frame, and the louvers are rotatably connected to the outer frame.

8. The air conditioner according to any one of claims 1-6, characterized in that, The air conditioner also includes: An exhaust module is connected to the outside of the housing, corresponding to the second air vent; the exhaust module includes: The exhaust casing has an exhaust duct interface for connecting to the outside through a duct; An exhaust valve is used to open or close the exhaust pipe interface; An exhaust fan, located inside the exhaust housing, is used to blow indoor air toward the exhaust pipe interface.

9. The air conditioner according to claim 8, characterized in that, The air conditioner also includes: A fresh air module is connected to the outside of the housing, corresponding to the first air vent; the fresh air module includes: The fresh air casing has a fresh air duct interface for connecting to the outside through the duct; Fresh air valve, used to open or close the fresh air duct interface; A fresh air fan is installed inside the fresh air housing and is used to blow outdoor fresh air into the fresh air duct. A fresh air filter is located between the fresh air duct interface and the fresh air fan, and is used to filter outdoor fresh air from the fresh air duct interface.

10. The air conditioner according to claim 1, characterized in that, The fresh air duct is equipped with a first air valve for opening or closing the fresh air duct; the exhaust air duct is equipped with a second air valve for opening or closing the exhaust air duct.

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