Indoor unit and air conditioner having the same

Abstract

The present invention provides an indoor unit and an air conditioner having the same. The indoor unit includes a first housing, a heat exchange system, and a fresh air system. The first housing has a receiving cavity, and a plurality of air outlets are formed on the first housing; the heat exchange system is disposed in the receiving cavity, the heat exchange system has a heat exchange air duct, and each air outlet is communicated with the heat exchange air duct. The heat exchange system can achieve at least one air outlet mode through the plurality of air outlets; the fresh air system is disposed in the receiving cavity, and the fresh air system includes an exhaust air duct structure; wherein, when the indoor unit is in one of the air outlet modes, indoor air can be discharged through the exhaust air duct structure. The present invention solves the problems that the structure of the indoor unit in the prior art is complex and is not conducive to the economy of the indoor unit.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular, to an indoor unit and an air conditioner having the same. Background Art

[0002] In the prior art, an indoor unit is usually provided with a fresh air device to introduce outdoor fresh air into the room. However, most indoor units can only introduce outdoor fresh air into the room and cannot discharge the indoor dirty air in time. Since the room is in a closed state when the air conditioner is operating, if the indoor dirty air is not discharged outdoors in time, it is easy to cause a high carbon dioxide concentration in the room, which affects the health of users.

[0003] The existing indoor unit is provided with a double centrifugal fan to ensure that the indoor unit has the function of discharging indoor dirty air and introducing outdoor fresh air. However, the above indoor unit needs to be provided with an additional fan, which leads to the complication of the structure of the indoor unit, increases the manufacturing cost of the indoor unit, and is not conducive to the economy of the indoor unit. Summary of the Invention

[0004] The main object of the present invention is to provide an indoor unit and an air conditioner having the same, so as to solve the problem that the structure of the indoor unit in the prior art is complex and not conducive to the economy of the indoor unit.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided an indoor unit, including a first housing, a heat exchange system, and a fresh air system. The first housing has a receiving cavity, and a plurality of air outlets are formed on the first housing; the heat exchange system is disposed in the receiving cavity, and the heat exchange system has a heat exchange air duct, and each air outlet is communicated with the heat exchange air duct, and the heat exchange system can realize at least one air outlet mode through the plurality of air outlets; the fresh air system is disposed in the receiving cavity, and the fresh air system includes an exhaust air duct structure; wherein, when the indoor unit is in one of the air outlet modes, the indoor air can be discharged through the exhaust air duct structure.

[0006] Further, the plurality of air outlets include a first air outlet, a second air outlet, and a first exhaust air outlet. The exhaust air duct structure is communicated with the outside through the first exhaust air outlet. The air outlet modes include an upper air outlet mode and a lower air outlet mode. When the indoor unit is in the upper air outlet mode, the first air outlet blows air, and the second air outlet sucks air; when the indoor unit is in the lower air outlet mode, the first air outlet sucks air, and the second air outlet blows air.

[0007] Further, when the indoor unit is in the upper air outlet mode, the exhaust air duct structure is communicated with the first air outlet and the first exhaust air outlet, and the indoor air is discharged through the exhaust air duct structure; when the indoor unit is in the lower air outlet mode, the exhaust air duct structure is communicated with the second air outlet and the first exhaust air outlet, and the indoor air is discharged through the exhaust air duct structure.

[0008] Furthermore, the exhaust air duct structure includes a second housing and a rotary baffle. The second housing has a first exhaust air duct and a second air outlet. The first exhaust air duct is in communication with the second air outlet, and the second air outlet is disposed opposite to the first air outlet. The rotary baffle is disposed in the accommodation cavity, and the rotary baffle is connected to the second housing. The rotary baffle is rotatably disposed relative to the second housing. A first communication port is provided between the first exhaust air duct and the heat exchange duct. The rotary baffle has a first closed position for closing the first communication port and a first avoidance position for opening the first communication port. When the first air inlet admits air and the second air outlet discharges air, the rotary baffle is located at the first avoidance position. Part of the indoor air flowing through the heat exchange duct enters the first exhaust air duct through the first communication port and is discharged through the second air outlet.

[0009] Furthermore, the second housing further has a second exhaust air duct, a second air outlet, and a third air inlet. Both the second air outlet and the third air inlet are in communication with the second exhaust air duct. When the first air outlet discharges air and the second air inlet admits air, the second exhaust air duct is in communication with the first air outlet. Part of the indoor air flowing through the heat exchange duct enters the second exhaust air duct through the third air inlet and is discharged through the second air outlet.

[0010] Furthermore, the first exhaust air duct extends horizontally, and the second exhaust air duct extends vertically to the position of the first air outlet.

[0011] Furthermore, the fresh air system further includes a fresh air duct structure. When the indoor unit is in the downward air discharge mode, the fresh air duct structure is in communication with the first air outlet to introduce outdoor fresh air. When the indoor unit is in the upward air discharge mode, the fresh air duct structure is in communication with the second air outlet to introduce outdoor fresh air.

[0012] Furthermore, the fresh air duct structure includes a third housing and a baffle assembly. The third housing has a first fresh air duct and a first air inlet, and the first fresh air duct is in communication with the first air inlet. The baffle assembly is connected to the third housing, and the baffle assembly is movably disposed relative to the third housing. A second communication port is provided between the heat exchange duct and the first fresh air duct. The baffle assembly has a second closed position for closing the second communication port and a second avoidance position for opening the second communication port.

[0013] Furthermore, when the first air outlet discharges air and the second air inlet admits air, the baffle assembly is located at the second avoidance position. Outdoor fresh air enters the first fresh air duct through the first air inlet, enters the heat exchange duct through the second communication port for heat exchange, and is blown out through the first air outlet.

[0014] Further, the baffle assembly includes a lifting baffle, a rack structure, and a driving part. Among them, the lifting baffle is movably connected to the third housing; the rack structure is connected to the lifting baffle and extends along the length direction of the lifting baffle; the driving part is connected to the first housing, and the driving part has a gear structure for meshing with the rack structure.

[0015] Further, the third housing further has a second fresh air duct, a second air inlet, and an air outlet. Both the second air inlet and the air outlet are communicated with the second fresh air duct. When the first air inlet admits air and the second air outlet discharges air, the second fresh air duct is communicated with the first air inlet. Outdoor fresh air enters the second fresh air duct through the second air inlet, and enters the heat exchange duct through the air outlet for heat exchange and is then blown out through the second air outlet.

[0016] Further, the first fresh air duct extends horizontally, and the second fresh air duct extends vertically to the position of the first air inlet.

[0017] Further, the fresh air duct structure further includes a first filter screen and a second filter screen. Among them, the first filter screen is arranged in the first fresh air duct and is located between the first air inlet and the second communication port; and / or the second filter screen is arranged in the second fresh air duct and is located between the second air inlet and the air outlet.

[0018] Further, the first end in the height direction of the fresh air duct structure is connected to the first end in the height direction of the exhaust air duct structure, and the second end in the height direction of the fresh air duct structure is separately arranged from the second end in the height direction of the exhaust air duct structure.

[0019] Further, the heat exchange system includes an evaporator assembly and a fan assembly. Among them, the evaporator assembly is arranged in the accommodation cavity and is located above the heat exchange duct; the fan assembly is arranged in the heat exchange duct, and the fan assembly includes a plurality of fans, and the plurality of fans are arranged at intervals in the vertical direction.

[0020] Further, the plurality of fans include a first fan and a second fan. Among them, the first fan is arranged close to the evaporator assembly; the second fan is located below the first fan, and the axes of the first fan and the second fan are both parallel to the vertical direction.

[0021] Further, a first air inlet and a second air outlet are formed on the first side wall of the first housing, and the first air inlet is located above the second air outlet.

[0022] Further, a first exhaust air outlet is formed on the second side wall of the first housing, and the second side wall is arranged opposite to the first side wall.

[0023] Further, a fourth air inlet and a fifth air inlet are formed on the second side wall of the first housing. The fourth air inlet is arranged opposite to and communicated with the first air inlet, and the fifth air inlet is arranged opposite to and communicated with the second air inlet.

[0024] Further, both the fourth air inlet and the fifth air inlet are located above the first row of air outlets.

[0025] Further, the fourth air inlet and the fifth air inlet are arranged adjacent to each other, and at least one of the fourth air inlet and the fifth air inlet is of a semi-circular structure.

[0026] According to another aspect of the present invention, there is provided an air conditioner, which includes an indoor unit, and the indoor unit is the above-mentioned indoor unit.

[0027] Applying the technical solution of the present invention, there is provided an indoor unit with a fresh air system, which ensures that the indoor unit can have the function of discharging indoor air and is also beneficial to the economy of the indoor unit.

[0028] Specifically, by setting the fresh air system into a structural form including an exhaust air duct structure, in this way, when the indoor unit is in one of the air outlet modes, the indoor air can be discharged through the exhaust air duct structure, ensuring that no matter what air outlet mode the indoor unit is in, the indoor air can be discharged in time, thereby ensuring the quality of the indoor air. Since the structure of the fresh air system is relatively simple, the processing and manufacturing difficulty of the indoor unit is reduced, which is beneficial to the economy of the indoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0030] Figure 1 shows a schematic structural diagram of an indoor unit of an air conditioner according to an optional embodiment of the present invention;

[0031] Figure 2 shows Figure 1 a schematic structural diagram of another perspective of the indoor unit in

[0032] Figure 3 shows Figure 2 a schematic internal structural diagram of the indoor unit in, in which the air flow enters from the bottom and exits from the top;

[0033] Figure 4 shows Figure 2 a schematic internal structural diagram of the indoor unit in, in which the air flow enters from the top and exits from the bottom;

[0034] Figure 5 shows Figure 3 a schematic diagram of the state of discharging indoor air from the second exhaust air duct of the exhaust air duct structure in

[0035] Figure 6 shows Figure 4Schematic diagram of the state of the indoor air being discharged through the first exhaust air duct of the exhaust air duct structure

[0036] Figure 7 shows Figure 4 Schematic diagram of the state of outdoor fresh air being introduced through the second fresh air duct of the fresh air duct structure

[0037] Figure 8 shows Figure 2 Schematic diagram of the internal structure of the indoor unit

[0038] Figure 9 shows Figure 8 Schematic diagram of the sectional structure of the indoor unit at the A-A view after being rotated counterclockwise by 90 degrees

[0039] Figure 10 shows Figure 8 Schematic diagram of the structure of the fresh air duct structure and the exhaust air duct structure of the fresh air system during assembly. In this figure, the lifting baffle of the baffle assembly is in the first closed position

[0040] Figure 11 shows Figure 9 Schematic diagram of the structure of the indoor unit when the first air inlet is in the open state

[0041] Figure 12 shows Figure 10 Schematic diagram of the structure of the indoor unit when the lifting baffle of the baffle assembly is in the first avoidance position

[0042] Figure 13 shows Figure 11 Schematic diagram of the structure of the indoor unit when the lifting baffle is in the first avoidance position

[0043] Figure 14 shows Figure 12 Schematic diagram of the structure of a part of the fresh air system

[0044] Figure 15 shows Figure 12 Schematic diagram of the structure of the rack structure and the gear structure of the baffle assembly in the engaged state

[0045] Among them, the above-mentioned drawings include the following reference numerals

[0046] 10. First housing; 11. Accommodation cavity; 12. First air inlet; 13. Second air inlet; 14. First exhaust air outlet; 15. Fourth air inlet; 16. Fifth air inlet

[0047] 20. Heat exchange system; 21. Heat exchange air duct; 22. Evaporator assembly; 23. Fan assembly; 231. First fan; 232. Second fan

[0048] 30. Fresh air system; 31. Fresh air duct structure; 311. Third housing; 3111. First fresh air duct; 3112. First air inlet; 3113. Second fresh air duct; 3114. Second air inlet; 3115. Air outlet; 312. Baffle assembly; 3121. Lifting baffle; 3122. Rack structure; 3123. Driving part; 3124. Gear structure; 313. First filter screen; 314. Second filter screen; 32. Exhaust air duct structure; 321. Second housing; 3211. First exhaust air duct; 3212. Second exhaust air outlet; 3213. Second exhaust air duct; 3214. Third air inlet; 322. Rotating baffle;

[0049] 100. First communication port; 200. Second communication port. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0051] To solve the problem that the structure of the indoor unit in the prior art is complex and not conducive to the economy of the indoor unit, the present invention provides an indoor unit and an air conditioner, wherein the air conditioner includes an indoor unit, and the indoor unit is the indoor unit described above and below.

[0052] As Figures 1 to 15 shown, the indoor unit includes a first housing 10, a heat exchange system 20 and a fresh air system 30. The first housing 10 has a receiving cavity 11, and a plurality of air vents are opened on the first housing 10; the heat exchange system 20 is disposed in the receiving cavity 11, the heat exchange system 20 has a heat exchange air duct 21, and each air vent is communicated with the heat exchange air duct 21. The heat exchange system 20 can achieve at least one air outlet mode through a plurality of air vents; the fresh air system 30 is disposed in the receiving cavity 11, and the fresh air system 30 includes an exhaust air duct structure 32; wherein, when the indoor unit is in one of the air outlet modes, the indoor air can be discharged through the exhaust air duct structure 32.

[0053] An indoor unit with a fresh air system 30 is provided, which ensures that the indoor unit can have the function of discharging indoor air and is also conducive to the economy of the indoor unit.

[0054] Specifically, by setting the fresh air system 30 into a structural form including an exhaust air duct structure 32, in this way, when the indoor unit is in one of the air outlet modes, the indoor air can be discharged through the exhaust air duct structure 32, ensuring that no matter which air outlet mode the indoor unit is in, it can ensure the timely discharge of the indoor air, thereby ensuring the quality of the indoor air. Since the structure of the fresh air system 30 is relatively simple, the manufacturing difficulty of the indoor unit is reduced, which is beneficial to the economy of the indoor unit.

[0055] As Figures 1 to 6 shown, the multiple air outlets include a first air outlet 12, a second air outlet 13 and a first exhaust air outlet 14. The exhaust air duct structure 32 is communicated with the outside through the first exhaust air outlet 14. The air outlet modes include an upper air outlet mode and a lower air outlet mode. When the indoor unit is in the upper air outlet mode, the first air outlet 12 discharges air and the second air outlet 13 intakes air; when the indoor unit is in the lower air outlet mode, the first air outlet 12 intakes air and the second air outlet 13 discharges air.

[0056] Specifically, when the indoor unit is in the upper air outlet mode, the exhaust air duct structure 32 is communicated with the first air outlet 12 and the first exhaust air outlet 14, and the indoor air is discharged through the exhaust air duct structure 32; when the indoor unit is in the lower air outlet mode, the exhaust air duct structure 32 is communicated with the second air outlet 13 and the first exhaust air outlet 14, and the indoor air is discharged through the exhaust air duct structure 32. In this way, when the indoor unit is in the upper air outlet mode, that is, when the first air outlet 12 discharges air and the second air outlet 13 intakes air, the exhaust air duct structure 32 is communicated with the first air outlet 12 and the first exhaust air outlet 14, so that a part of the indoor air near the first air outlet 12 flows through the exhaust air duct structure 32 and is discharged from the first exhaust air outlet 14, thereby discharging the indoor air to the outside; when the indoor unit is in the lower air outlet mode, that is, when the first air outlet 12 intakes air and the second air outlet 13 discharges air, the indoor unit discharges the indoor air in the following way: the exhaust air duct structure 32 is communicated with the second air outlet 13 and the first exhaust air outlet 14, so that a part of the indoor air near the second air outlet 13 flows through the exhaust air duct structure 32 and is discharged from the first exhaust air outlet 14, thereby discharging the indoor air to the outside.

[0057] As Figure 6As shown, the exhaust air duct structure 32 includes a second housing 321 and a rotary baffle 322. The second housing 321 has a first exhaust air duct 3211 and a second exhaust air outlet 3212. The first exhaust air duct 3211 and the second exhaust air outlet 3212 are in communication. The second exhaust air outlet 3212 is disposed opposite to the first exhaust air outlet 14. The rotary baffle 322 is disposed in the accommodation cavity 11. The rotary baffle 322 is connected to the second housing 321 and is rotatably disposed relative to the second housing 321. A first communication port 100 is provided between the first exhaust air duct 3211 and the heat exchange air duct 21. The rotary baffle 322 has a first closed position for closing the first communication port 100 and a first avoidance position for opening the first communication port 100. Wherein, when the first air inlet 12 admits air and the second air outlet 13 discharges air, the rotary baffle 322 is located at the first avoidance position. Part of the indoor air flowing through the heat exchange air duct 21 enters the first exhaust air duct 3211 through the first communication port 100 and is discharged from the second exhaust air outlet 3212. In this way, the exhaust reliability of the first exhaust air duct 3211 is ensured.

[0058] As Figure 5 shown, the second housing 321 further has a second exhaust air duct 3213, a second exhaust air outlet 3212 and a third air inlet 3214. The second exhaust air outlet 3212 and the third air inlet 3214 are both in communication with the second exhaust air duct 3213. When the first air outlet 12 discharges air and the second air inlet 13 admits air, the second exhaust air duct 3213 is in communication with the first air outlet 12. Part of the indoor air flowing through the heat exchange air duct 21 enters the second exhaust air duct 3213 through the third air inlet 3214 and is discharged from the second exhaust air outlet 3212. In this way, the exhaust reliability of the second exhaust air duct 3213 is ensured.

[0059] It should be noted that in the present application, in order to ensure that the indoor unit can smoothly complete the exhaust operation in both the upper air outlet mode and the lower air outlet mode, as Figure 5 , Figure 6 and Figure 14 shown, the first exhaust air duct 3211 extends horizontally, and the second exhaust air duct 3213 extends vertically to the position of the first air outlet 12.

[0060] As Figures 7 to 15As shown, the fresh air system 30 further includes a fresh air duct structure 31. When the indoor unit is in the downward air outlet mode, the fresh air duct structure 31 is communicated with the first air outlet 12 to introduce outdoor fresh air; when the indoor unit is in the upward air outlet mode, the fresh air duct structure 31 is communicated with the second air outlet 13 to introduce outdoor fresh air. In this way, by setting the fresh air system 30 to include the fresh air duct structure 31 and the exhaust air duct structure 32, it is ensured that the indoor unit has the functions of exhausting indoor air and introducing outdoor fresh air. Specifically, when the first air outlet 12 is for air intake and the second air outlet 13 is for air exhaust, the way for the indoor unit to introduce outdoor fresh air is as follows: the fresh air duct structure 31 is communicated with the first air outlet 12, so that the outdoor fresh air enters together with the air entering through the first air outlet 12 and is blown out through the second air outlet 13, thereby introducing outdoor fresh air into the room; when the first air outlet 12 is for air exhaust and the second air outlet 13 is for air intake, the way for the indoor unit to introduce outdoor fresh air is as follows: the fresh air duct structure 31 is communicated with the second air outlet 13, so that the outdoor fresh air enters together with the air entering through the second air outlet 13 and is blown out through the first air outlet 12, thereby introducing outdoor fresh air into the room.

[0061] As Figures 8 to 14 shown, the fresh air duct structure 31 includes a third housing 311 and a baffle assembly 312. Among them, the third housing 311 has a first fresh air duct 3111 and a first air inlet 3112, and the first fresh air duct 3111 is communicated with the first air inlet 3112; the baffle assembly 312 is connected to the third housing 311, and the baffle assembly 312 is movably arranged relative to the third housing 311. A second communication port 200 is provided between the heat exchange duct 21 and the first fresh air duct 3111. The baffle assembly 312 has a second closed position for closing the second communication port 200, and a second avoidance position for the baffle assembly 312 to open the second communication port 200.

[0062] As Figure 9 shown, both the first air inlet 3112 and the second communication port 200 are in the closed state.

[0063] As Figure 10 and Figure 11 shown, the first air inlet 3112 is in the open state and the second communication port 200 is in the closed state.

[0064] As Figure 12 and Figure 13 shown, when the first air outlet 12 is for air exhaust and the second air outlet 13 is for air intake, the baffle assembly 312 is located at the first avoidance position. The outdoor fresh air enters the first fresh air duct 3111 through the first air inlet 3112, and enters the heat exchange duct 21 through the second communication port 200 for heat exchange and then is blown out through the first air outlet 12. In this way, the reliability of introducing fresh air into the first fresh air duct 3111 is ensured.

[0065] As Figure 10 、Figure 12 and Figure 15 As shown in Figure 15 , the baffle assembly 312 includes a lifting baffle 3121, a rack structure 3122, and a driving part 3123. Among them, the lifting baffle 3121 is movably connected to the third housing 311. The rack structure 3122 is connected to the lifting baffle 3121 and extends along the length direction of the lifting baffle 3121. The driving part 3123 is connected to the first housing 10, and the driving part 3123 has a gear structure 3124 for meshing with the rack structure 3122. In this way, the transmission mode of the gear and rack is adopted to ensure the smoothness of the transmission, thereby ensuring the lifting reliability of the lifting baffle 3121.

[0066] As Figure 7 and Figure 14 shown, the third housing 311 also has a second fresh air duct 3113, a second air inlet 3114, and an air outlet 3115. The second air inlet 3114 and the air outlet 3115 are both communicated with the second fresh air duct 3113. When the first air inlet 12 intakes air and the second air outlet 13 discharges air, the second fresh air duct 3113 is communicated with the first air inlet 12. The outdoor fresh air enters the second fresh air duct 3113 through the second air inlet 3114, and enters the heat exchange duct 21 through the air outlet 3115 for heat exchange and is then blown out by the second air outlet 13. In this way, the exhaust reliability of the second fresh air duct 3113 is ensured.

[0067] It should be noted that in this application, in order to ensure that the indoor unit can successfully complete the operation of introducing fresh air in both the upper air outlet mode and the lower air outlet mode, as Figure 5 、 Figure 6 and Figure 14 shown, the first fresh air duct 3111 extends horizontally, and the second fresh air duct 3113 extends vertically to the position of the first air inlet 12.

[0068] As Figure 9 、 Figure 11 and Figure 13 shown, the fresh air duct structure 31 further includes a first filter screen 313 and a second filter screen 314. Among them, the first filter screen 313 is arranged in the first fresh air duct 3111 and is located between the first air inlet 3112 and the second communication port 200; and / or, the second filter screen 314 is arranged in the second fresh air duct 3113 and is located between the second air inlet 3114 and the air outlet 3115. In this way, the first filter screen 313 plays a role in filtering the outdoor fresh air entering the first fresh air duct 3111, and the second filter screen 314 plays a role in filtering the outdoor fresh air entering the second fresh air duct 3113.

[0069] As Figure 10 、 Figure 12 and Figure 14As shown, the first end in the height direction of the fresh air duct structure 31 is connected to the first end in the height direction of the exhaust air duct structure 32, and the second end in the height direction of the fresh air duct structure 31 is separately arranged from the second end in the height direction of the exhaust air duct structure 32. In this way, it is ensured that the fresh air duct structure 31 and the exhaust air duct structure 32 do not interfere with each other, thereby ensuring the reliability of introducing fresh air into the fresh air duct structure 31 and the reliability of exhausting air from the exhaust air duct structure 32.

[0070] As Figures 3 to 8 shown, the heat exchange system 20 includes an evaporator assembly 22 and a fan assembly 23. Among them, the evaporator assembly 22 is arranged in the accommodation cavity 11 and above the heat exchange air duct 21; the fan assembly 23 is arranged in the heat exchange air duct 21, and the fan assembly 23 includes a plurality of fans, and the plurality of fans are arranged at intervals in the vertical direction. In this way, it is ensured that the air flow can be heat-exchanged in time by flowing through the evaporator assembly 22, thereby ensuring the working reliability of the indoor unit.

[0071] As Figures 3 to 8 shown, the plurality of fans include a first fan 231 and a second fan 232. Among them, the first fan 231 is arranged close to the evaporator assembly 22; the second fan 232 is located below the first fan 231, and the axes of the first fan 231 and the second fan 232 are both parallel to the vertical direction. In this way, when the indoor unit is in the upper air outlet mode, the first fan 231 operates and the second fan 232 does not operate; when the indoor unit is in the lower air outlet mode, the first fan 231 does not operate and the second fan 232 operates.

[0072] It should be noted that in the present application, both the first fan 231 and the second fan 232 are axial fans.

[0073] As Figure 1 shown, a first air outlet 12 and a second air outlet 13 are provided on the first side wall of the first housing 10, and the first air outlet 12 is located above the second air outlet 13. A first exhaust air outlet 14 is provided on the second side wall of the first housing 10, and the second side wall is arranged opposite to the first side wall. In this way, it is convenient to provide an installation space for the fresh air system 30, thereby ensuring the regularity of the indoor unit.

[0074] As Figure 2 shown, a fourth air inlet 15 and a fifth air inlet 16 are provided on the second side wall of the first housing 10. The fourth air inlet 15 is arranged opposite to and communicated with the first air inlet 3112, and the fifth air inlet 16 is arranged opposite to and communicated with the second air inlet 3114. In this way, it is ensured that the air flow can smoothly enter the first fresh air duct 3111 or enter the second fresh air duct 3113.

[0075] As Figure 2 shown, both the fourth air inlet 15 and the fifth air inlet 16 are located above the first exhaust air outlet 14.

[0076] Optionally, the fourth air inlet 15 and the fifth air inlet 16 are arranged adjacent to each other, and at least one of the fourth air inlet 15 and the fifth air inlet 16 is a semi-circular structure.

[0077] It should be noted that in this application, considering that the external fresh air duct is a circular pipe, in order to ensure that there are fewer pipelines connected to the indoor unit, a single fresh air duct is used to connect to both the fourth air inlet 15 and the fifth air inlet 16 at the same time. Preferably, both the fourth air inlet 15 and the fifth air inlet 16 are semi-circular structures. In this way, it is only necessary to select whether to close or open the fourth air inlet 15 or the fifth air inlet 16 according to the air outlet mode of the indoor unit.

[0078] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0079] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0080] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0082] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present 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 under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0083] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An indoor unit, characterized in that, Comprising: A first housing (10), the first housing (10) having a receiving cavity (11), and a plurality of air vents are provided on the first housing (10), the plurality of air vents including a first air vent (12), a second air vent (13), and a first exhaust air vent (14); A heat exchange system (20), the heat exchange system (20) being disposed in the receiving cavity (11), the heat exchange system (20) having a heat exchange air duct (21), each of the air vents being in communication with the heat exchange air duct (21), and the heat exchange system (20) being capable of achieving at least one air outlet mode through the plurality of air vents; A fresh air system (30), the fresh air system (30) being disposed in the receiving cavity (11), the fresh air system (30) including an exhaust air duct structure (32); Wherein, when the indoor unit is in one of the air outlet modes, indoor air can be discharged through the exhaust air duct structure (32); The exhaust air duct structure (32) includes: A second housing (321), the second housing (321) having a first exhaust air duct (3211) and a second exhaust air vent (3212), the first exhaust air duct (3211) being in communication with the second exhaust air vent (3212), and the second exhaust air vent (3212) being disposed opposite to the first exhaust air vent (14); A rotating baffle (322), the rotating baffle (322) being disposed in the receiving cavity (11), the rotating baffle (322) being connected to the second housing (321), the rotating baffle (322) being rotatably disposed relative to the second housing (321), a first communication port (100) being provided between the first exhaust air duct (3211) and the heat exchange air duct (21), the rotating baffle (322) having a first closed position for closing the first communication port (100), and the rotating baffle (322) having a first avoidance position for opening the first communication port (100); Wherein, when the first air vent (12) admits air and the second air vent (13) discharges air, the rotating baffle (322) is located at the first avoidance position, and a part of the indoor air flowing through the heat exchange air duct (21) enters the first exhaust air duct (3211) through the first communication port (100) and is discharged through the second exhaust air vent (3212); The second housing (321) further has a second exhaust air duct (3213), a second exhaust air vent (3212), and a third air inlet (3214), the second exhaust air vent (3212) and the third air inlet (3214) both being in communication with the second exhaust air duct (3213), when the first air vent (12) discharges air and the second air vent (13) admits air, the second exhaust air duct (3213) is in communication with the first air vent (12), and a part of the indoor air flowing through the heat exchange air duct (21) enters the second exhaust air duct (3213) through the third air inlet (3214) and is discharged through the second exhaust air vent (3212); The first exhaust air duct (3211) extends horizontally, and the second exhaust air duct (3213) extends vertically to the position of the first air outlet (12).

2. The indoor unit according to claim 1, characterized in that, The exhaust air duct structure (32) communicates with the outside through the first exhaust air outlet (14). The air outlet modes include an upper air outlet mode and a lower air outlet mode. When the indoor unit is in the upper air outlet mode, the first air outlet (12) blows air and the second air outlet (13) sucks in air; when the indoor unit is in the lower air outlet mode, the first air outlet (12) sucks in air and the second air outlet (13) blows air.

3. The indoor unit according to claim 2, characterized in that When the indoor unit is in the upper air outlet mode, the exhaust air duct structure (32) communicates with the first air outlet (12) and the first exhaust air outlet (14), and indoor air is discharged through the exhaust air duct structure (32); when the indoor unit is in the lower air outlet mode, the exhaust air duct structure (32) communicates with the second air outlet (13) and the first exhaust air outlet (14), and indoor air is discharged through the exhaust air duct structure (32).

4. The indoor unit according to claim 1, characterized in that, The fresh air system (30) further includes a fresh air duct structure (31). When the indoor unit is in the lower air outlet mode, the fresh air duct structure (31) communicates with the first air outlet (12) to introduce outdoor fresh air; When the indoor unit is in the upper air outlet mode, the fresh air duct structure (31) communicates with the second air outlet (13) to introduce outdoor fresh air.

5. The indoor unit according to claim 4, characterized in that The fresh air duct structure (31) includes: A third housing (311) having a first fresh air duct (3111) and a first air inlet (3112), and the first fresh air duct (3111) is in communication with the first air inlet (3112); A baffle assembly (312) connected to the third housing (311). The baffle assembly (312) is movably arranged relative to the third housing (311). A second communication port (200) is provided between the heat exchange duct (21) and the first fresh air duct (3111). The baffle assembly (312) has a second closed position for closing the second communication port (200) and a second avoidance position for opening the second communication port (200).

6. The indoor unit according to claim 5, wherein When the first air outlet (12) blows air and the second air outlet (13) sucks in air, the baffle assembly (312) is in the first avoidance position. Outdoor fresh air enters the first fresh air duct (3111) through the first air inlet (3112), enters the heat exchange duct (21) through the second communication port (200) for heat exchange, and is then blown out through the first air outlet (12).

7. The indoor unit according to claim 6, characterized in that, The baffle assembly (312) includes: A lifting baffle (3121) movably connected to the third housing (311); A rack structure (3122), the rack structure (3122) is connected to the lifting baffle (3121) and extends along the length direction of the lifting baffle (3121); A driving part (3123), the driving part (3123) is connected to the first housing (10), and the driving part (3123) has a gear structure (3124) for meshing with the rack structure (3122).

8. The indoor unit according to claim 7, characterized in that The third housing (311) further has a second fresh air duct (3113), a second air inlet (3114) and an air outlet (3115). The second air inlet (3114) and the air outlet (3115) are both communicated with the second fresh air duct (3113). When the first air inlet (12) admits air and the second air outlet (13) discharges air, the second fresh air duct (3113) is communicated with the first air inlet (12). Outdoor fresh air enters the second fresh air duct (3113) through the second air inlet (3114), and enters the heat exchange duct (21) through the air outlet (3115) for heat exchange and is then blown out by the second air outlet (13).

9. The indoor unit according to claim 8, characterized in that, The first fresh air duct (3111) extends horizontally, and the second fresh air duct (3113) extends vertically to the position of the first air inlet (12).

10. The indoor unit according to claim 9, characterized in that, The fresh air duct structure (31) further includes: A first filter screen (313), the first filter screen (313) is arranged in the first fresh air duct (3111) and is located between the first air inlet (3112) and the second communication port (200); and / or, A second filter screen (314), the second filter screen (314) is arranged in the second fresh air duct (3113) and is located between the second air inlet (3114) and the air outlet (3115).

11. The indoor unit according to claim 10, characterized in that, The first end in the height direction of the fresh air duct structure (31) is connected to the first end in the height direction of the exhaust air duct structure (32), and the second end in the height direction of the fresh air duct structure (31) is connected and separately arranged from the second end in the height direction of the exhaust air duct structure (32).

12. The indoor unit according to claim 11, characterized in that, The heat exchange system (20) includes: An evaporator assembly (22), the evaporator assembly (22) is arranged in the accommodation cavity (11) and is located above the heat exchange duct (21); A fan assembly (23), the fan assembly (23) is arranged in the heat exchange duct (21), and the fan assembly (23) includes a plurality of fans, and the plurality of fans are arranged at intervals in the vertical direction.

13. The indoor unit according to claim 12, characterized in that, The plurality of fans include: A first fan (231), the first fan (231) is arranged close to the evaporator assembly (22); A second fan (232), the second fan (232) is located below the first fan (231), and the axes of the first fan (231) and the second fan (232) are both parallel to the vertical direction.

14. The indoor unit according to claim 13, characterized in that, The first air outlet (12) and the second air outlet (13) are formed in the first side wall of the first housing (10), and the first air outlet (12) is located above the second air outlet (13).

15. The indoor unit according to claim 14, characterized in that, The first air discharge outlet (14) is formed in the second side wall of the first housing (10), and the second side wall is disposed opposite to the first side wall.

16. The indoor unit according to claim 15, characterized in that, A fourth air inlet (15) and a fifth air inlet (16) are formed in the second side wall of the first housing (10). The fourth air inlet (15) is disposed opposite to and communicated with the first air inlet (3112), and the fifth air inlet (16) is disposed opposite to and communicated with the second air inlet (3114).

17. The indoor unit according to claim 16, characterized in that, Both the fourth air inlet (15) and the fifth air inlet (16) are located above the first air discharge outlet (14).

18. The indoor unit according to claim 17, characterized in that, The fourth air inlet (15) and the fifth air inlet (16) are adjacently arranged, and at least one of the fourth air inlet (15) and the fifth air inlet (16) is of a semicircular structure.

19. An air conditioner, the air conditioner includes an indoor unit, characterized in that, The indoor unit is the indoor unit according to any one of claims 1 to 18.

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