Air conditioner

Abstract

An air conditioner comprises an outdoor unit and an indoor unit (301). The indoor unit (301) is connected to the outdoor unit; the indoor unit (301) comprises a first housing (1), a heat exchanger (40), a first fan assembly (31), and a second fan assembly (721); the first housing (1) comprises a first chamber (201), a second chamber (202), and a third chamber (711); the first chamber (201) is communicated with the second chamber (202); the second chamber (202) is communicated with an indoor space; the first chamber (201) is communicated with the third chamber (711); the third chamber (711) is communicated with an outdoor space; the heat exchanger (40) is provided in the second chamber (202) and is configured to exchange heat with air in the second chamber (202); the first fan assembly (31) is provided in the first chamber (201) and is configured to blow air in the first chamber (201) to the second chamber (202); and the second fan assembly (721) is provided in the third chamber (711) and is configured to blow air in the third chamber (711) to the outdoor space.

Description

air conditioner

[0001] This application claims the priority of Chinese patent application No. 202420276379.8 filed on February 5, 2024; the priority of Chinese patent application No. 202420276905.0 filed on February 5, 2024; the priority of Chinese patent application No. 202420276883.8 filed on February 5, 2024; the priority of Chinese patent application No. 202420276920.5 filed on February 5, 2024; the priority of Chinese patent application No. 202420276921.5 filed on February 5, 2024 The priority of the Chinese patent application with application number 202420276938.5 filed on February 5, 2024; the priority of the Chinese patent application with application number 202420276389.1 filed on February 5, 2024; the priority of the Chinese patent application with application number 202410162057.5 filed on February 5, 2024; and the priority of the Chinese patent application with application number 202420276862.6 filed on February 5, 2024, all of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0003] Air conditioners, as common temperature control devices, primarily discharge cooled air from a refrigeration cycle into indoor spaces. The main components of the refrigeration cycle include a compressor, a heat exchanger (condenser and evaporator), and a fan. The area of ​​the heat exchanger directly determines the cooling or heating performance of the air conditioner.

[0004] Summary of the Invention

[0005] An air conditioner is provided. The air conditioner includes an outdoor unit and an indoor unit. The indoor unit is connected to the outdoor unit. The indoor unit includes a first housing, a heat exchanger, a first fan assembly, and a second fan assembly. The first housing includes a first chamber, a second chamber, and a third chamber. The first chamber and the second chamber are connected, and the second chamber is connected to the indoor space. The first chamber and the third chamber are connected, and the third chamber is connected to the outdoor space. The heat exchanger is disposed in the second chamber and is configured to exchange heat with the air in the second chamber. The first fan assembly is disposed in the first chamber and is configured to blow the air in the first chamber into the second chamber. The second fan assembly is disposed in the third chamber and is configured to blow the air in the third chamber into the outdoor space. When the first and second fan assemblies are operated simultaneously, part of the air in the first chamber is blown into the second chamber, and part of the air in the first chamber is blown into the third chamber. When the first fan assembly is stopped and the second fan assembly is operated, the air in the first chamber is blown into the third chamber. When the first fan assembly is in operation and the second fan assembly stops operating, the air in the first chamber is blown toward the second chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG1 is a perspective view of an indoor unit according to some embodiments;

[0007] FIG2 is a cross-sectional view of an indoor unit according to some embodiments;

[0008] FIG3 is a perspective view of a third sub-case according to some embodiments;

[0009] FIG4 is a cross-sectional view of a third sub-case according to some embodiments;

[0010] FIG5 is a structural diagram of a first motor assembly of a first sub-housing according to some embodiments;

[0011] FIG6 is a perspective view of a water receiving tray according to some embodiments;

[0012] FIG7A is a partial cross-sectional view of an indoor unit according to some embodiments;

[0013] FIG7B is a partial enlarged view of the area circled A in FIG7A ;

[0014] FIG8 is a schematic diagram of a water receiving pan and a first heat exchanger in the related art;

[0015] FIG9 is a partial cross-sectional view of an indoor unit with the first heat exchanger removed according to some embodiments;

[0016] FIG10 is a cross-sectional view of an indoor unit with a first sub-case removed according to some embodiments;

[0017] FIG11 is a cloud diagram of wind speed in an indoor unit according to some embodiments;

[0018] FIG12 is another partial cross-sectional view of an indoor unit according to some embodiments;

[0019] FIG13 is a structural diagram of a first heat exchanger and a water receiving tray according to some embodiments;

[0020] 14 is a top view of a first heat exchanger and a water tray according to some embodiments;

[0021] FIG15 is a partial enlarged view of the area circled at B in FIG14 ;

[0022] FIG16 is a top view of a second support portion and a water receiving tray according to some embodiments;

[0023] FIG17 is a schematic diagram of an indoor unit in the related art;

[0024] FIG18 is another schematic diagram of an indoor unit according to some embodiments;

[0025] FIG19 is another schematic diagram of an indoor unit in the related art;

[0026] FIG20 is a perspective view of another indoor unit according to some embodiments;

[0027] FIG21 is a cross-sectional view of another indoor unit according to some embodiments;

[0028] FIG22 is a structural diagram of an indoor unit with the third sub-case removed according to some embodiments;

[0029] FIG. 23 is a perspective view of a second sub-case according to some embodiments. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings to clearly and completely describe some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0031] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0032] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0033] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0034] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0035] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0036] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0037] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0038] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0039] In some embodiments of the present disclosure, an air conditioner performs a refrigeration cycle of the air conditioner using a compressor, a condenser, an expansion valve, and an 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.

[0040] The compressor compresses low-temperature, low-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0041] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser to a lower-pressure liquid. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves cooling by utilizing the latent heat of evaporation to exchange heat with the material being cooled. Throughout this cycle, the air conditioner regulates the temperature of the indoor space.

[0042] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit 301 of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit 301 or the outdoor unit.

[0043] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0044] In some embodiments of the present disclosure, the air conditioner is a ceiling-mounted structure, which can be used in places such as kitchens and bathrooms, but can also be used in other places.

[0045] It should be noted that the indoor unit 301 in some embodiments of the present disclosure includes but is not limited to a wall-mounted air conditioner, a floor-standing air conditioner, a ducted air conditioner, a ceiling air conditioner, a ceiling-mounted installation structure, and the like.

[0046] In some embodiments, the indoor unit 301 is installed in an indoor space, and the indoor unit 301 provides processed cold airflow or warm airflow to the indoor space to adjust the temperature or humidity of the indoor space.

[0047] In some embodiments, referring to FIG. 1 and FIG. 2 , the indoor unit 301 includes a first heat exchanger 40 (eg, an indoor heat exchanger).

[0048] When the air conditioner is installed on a suspended ceiling, due to the limitation of the suspended ceiling space, when the height of the air conditioner is too high, the air conditioner cannot be installed in the suspended ceiling space. However, when the height of the air conditioner is low, the heat exchange area of ​​the first heat exchanger 40 is limited, thereby reducing the heat exchange efficiency of the air conditioner.

[0049] In order to solve the above technical problems, some embodiments of the present disclosure provide an air conditioner. Referring to FIG. 1 and FIG. 2 , the indoor unit 301 includes a first shell 1 , which forms an outer shell of the indoor unit 301 .

[0050] In some embodiments, the first shell 1 includes a first sub-shell 20 (shell), the first sub-shell 20 is located in the ceiling, and the first shell 1 also includes a first cavity 201 (air inlet cavity).

[0051] In some embodiments, the first housing 1 includes a third sub-housing 10 (panel assembly), which is located at the bottom of the first housing 1. For example, the third sub-housing 10 is located at the bottom end of the first sub-housing 20.

[0052] For example, the bottom of the third subcase 10 is exposed outside the ceiling.

[0053] 3 and 4 , the third sub-housing 10 includes a third plate 11. The third sub-housing 10 also includes an air inlet frame 12. The air inlet frame 12 is connected to an end of the third plate 11 close to the first sub-housing 20 (eg, the upper end).

[0054] For example, the air inlet frame 12 includes an air inlet portion 101 , and the middle portion of the air inlet frame 12 is penetrated to form the air inlet portion 101 . The air inlet portion 101 is configured to allow air from the indoor space to flow in, that is, the air from the indoor space can enter the first shell 1 from the air inlet portion 101 .

[0055] In some embodiments, referring to Figures 3 and 4 , the third sub-housing 10 further includes an air outlet frame 13. The end of the third plate 11 proximal to the third sub-housing (e.g., the upper end) is connected to the air outlet frame 13. The air outlet frame 13 is configured to deliver air to the indoor space. The air outlet frame 13 includes an air supply portion 102 extending through the middle of the air outlet frame 13 to form the air supply portion 102. The air supply portion 102 is configured to deliver indoor air into the indoor space after heat exchange processing within the indoor unit 301.

[0056] In some embodiments, referring to FIG. 2 , the indoor unit 301 further includes a water receiving tray 50 . The water receiving tray 50 is located below the first heat exchanger 40 . The water receiving tray 50 is configured to collect condensation generated by the first heat exchanger 40 .

[0057] For example, the air inlet frame 12, the air outlet frame 13 and the third plate 11 are integrally formed, and the air inlet frame 12 and the air outlet frame 13 are respectively formed by extending upward from the third plate 11. In this way, the assembly time between the three can be reduced and the production cost can be reduced.

[0058] For another example, the air inlet frame 12, the air outlet frame 13 and the third plate 11 are separate parts. The air inlet frame 12 is detachably connected to the third plate 11 through a fixing part, and the air outlet frame 13 is also detachably connected to the third plate 11 through a fixing part. This is convenient for replacing and repairing any component of the air inlet frame 12, the air outlet frame 13 and the third plate 11, thereby reducing the cost of repair.

[0059] 2 , the bottom end of the air inlet portion 101 is a fourth opening 113 (air inlet). The air supply portion 102 includes a third opening 112 (air supply port). The bottom end of the air supply portion 102 is the third opening 112 (air supply port).

[0060] For example, the air inlet frame 12 , the air outlet frame 13 and the third plate 11 are a split connection structure, the third plate 11 is provided with a fourth opening 113 corresponding to the air inlet portion 101 , and the third plate 11 is provided with a third opening 112 corresponding to the air supply portion 102 .

[0061] In some embodiments, referring to FIG. 2 , the third sub-shell 10 further includes an air inlet grille 14 . The air inlet grille 14 is connected to the fourth opening 113 and can guide and filter the air entering the first shell 1 .

[0062] In some embodiments, the third sub-shell 10 further includes a filter portion 15 (filter unit), which is disposed at one end of the air inlet grille 14 close to the first sub-shell 20 (such as the upper end of the air inlet grille 14) and is configured to filter and purify air.

[0063] It should be noted that the direction from the air outlet frame 13 to the air inlet frame 12 is parallel to the width direction of the indoor unit 301 (the left-right direction as shown in FIG3 ). The direction from the third plate 11 to the first shell 1 is parallel to the height direction of the indoor unit 301 (the up-down direction as shown in FIG22 ).

[0064] In some embodiments, referring to Figure 4, taking the third opening 112 on the left side of the third plate 11 and the fourth opening 113 on the right side of the third plate 11 as an example for description, in the height direction of the indoor unit 301, the lower ends of the left and right inner side surfaces of the air outlet frame 13 are closer to the first end of the third plate 11 away from the air inlet frame 12 (such as the left end) than the upper ends of the left and right inner side surfaces of the air outlet frame 13, so that the air supply part 102 supplies air to the lower left.

[0065] For ease of description, the right inner side surface of the air outlet frame 13 is referred to as the first guide surface 13A, and the left inner side surface of the air outlet frame 13 is referred to as the second guide surface 13B. That is, among the sides surrounding the air supply portion 102, the side closest to the air inlet portion 101 is the first guide surface 13A, and the side farther from the air inlet portion 101 is the second guide surface 13B.

[0066] It should be noted that the first guide surface 13A and the second guide surface 13B are arranged opposite to each other.

[0067] 4 , the indoor unit 301 further includes an air guide plate 16 . The air guide plate 16 is rotatably connected to the third sub-housing 10 , and is rotatably disposed at the third opening 112 , and is configured to open or close the third opening 112 .

[0068] In some embodiments, the rotating shaft of the air guide plate 16 is close to the end of the air guide plate 16 close to the air inlet frame 12 (such as the right end of the air guide plate 16). When the air guide plate 16 opens the third opening 112, the end of the air guide plate 16 away from the air inlet frame 12 (such as the left end of the air guide plate 16) rotates downward, and the right end of the air guide plate 16 rotates upward into the air supply part 102; when the air guide plate 16 closes the third opening 112, the left end of the air guide plate 16 rotates upward, and the right end of the air guide plate 16 rotates downward.

[0069] For example, when the air guide plate 16 is in the open state, one end (e.g., the right end) of the air guide plate 16 is located within the air supply portion 102, and there is a gap between the one end (e.g., the right end) of the air guide plate 16 and the air supply portion 102. Due to the gap between the air guide plate 16 and the first guide surface 13A, air flows out from both the left and right sides of the air guide plate 16. As a result, the temperature of the air flowing out through the third opening 112 is relatively uniform, which helps reduce the possibility of condensation on the air guide plate 16.

[0070] In some embodiments, the right end of the air guide plate 16 is bent upward, so that even when the air guide plate 16 is opened at a small angle, a gap can be formed between the right end of the air guide plate 16 and the first guide surface 13A, so that the heat-exchanged air in the first shell 1 can flow out through the gap.

[0071] In some embodiments, the bottom surface of the air guide plate 16 is covered with an insulation layer to prevent condensation from forming on the air guide plate 16 .

[0072] It should be noted that the length direction of the air guide plate 16 is roughly parallel to the front-to-back direction of the indoor unit 301 (the front-to-back direction shown in FIG1 ), and is perpendicular to each other in the width direction, front-to-back direction, and height direction of the indoor unit 301 .

[0073] 4 , the air conditioner further includes at least one swing blade 17 , wherein a first end (e.g., the right end) of each swing blade 17 is connected to the air guide plate 16 , and a second end (e.g., the left end) of the swing blade 17 is connected to the third sub-housing 10 . It should be noted that the swing blade 17 is configured to swing within the air supply portion 102 , with the right end of the swing blade 17 swinging along the width direction of the indoor unit 301 .

[0074] 4 , in some embodiments, the at least one swing blade 17 includes a plurality of swing blades 17 , which are spaced apart in the front-to-rear direction of the indoor unit 301 within the air supply portion 102 and located on the inner side of the air guide plate 16 . Here, “inner side” refers to the side of the air guide plate 16 that is closer to the first sub-housing 20 .

[0075] It should be noted that either end of the swing blade 17 (such as the left end) is configured to swing along the front-to-back direction of the indoor unit 301 in the air supply section 102, and the swing of the swing blade 17 can adjust the air supply range along the front-to-back direction of the indoor unit 301.

[0076] In some embodiments, referring to FIG. 2 and FIG. 5 , the lower end of the first sub-case 20 includes a fifth opening, and the lower end of the first sub-case 20 is correspondingly connected to the third sub-case 10 .

[0077] For example, the first sub-housing 20 may be in the shape of a cuboid with a fifth opening at the lower end, so that the first sub-housing 20 can be easily installed on the ceiling.

[0078] 5 , the first housing 1 further includes a second plate 21 (middle partition), which is located on the side wall of the air inlet frame 12 near the air outlet frame 13. The second plate 21 is provided in the first sub-housing 20 and is connected to the left side wall of the air inlet frame 12.

[0079] It should be noted that the air inlet frame 12 further includes a second extension portion 121 ; the left side wall of the air inlet frame 12 is referred to as the second extension portion 121 (first extension wall), and the second plate 21 abuts against the second extension portion 121 .

[0080] In some embodiments, referring to FIG2 , the first housing 1 further includes a second cavity 202 (air outlet cavity). The first cavity 201 and the second cavity 202 are connected, and the second cavity 202 is connected to the indoor space. The second plate 21 separates the space within the first sub-housing 20 into the first cavity 201 and the second cavity 202. The first cavity 201 is located to the right of the second cavity 202 and is connected to the air inlet 101. The second cavity 202 is located to the left of the first cavity 201 and is connected to the air supply 102. The air supply 102 is configured to allow air in the second cavity 202 to flow out to the indoor space.

[0081] For example, the third opening 112 is in communication with the second cavity 202 , and the third opening 112 is configured to allow air in the second cavity 202 to flow out.

[0082] In some embodiments, referring to FIG. 2 , the indoor unit 301 further includes a first fan assembly 31 . The first fan assembly 31 is disposed in the first chamber 201 and is configured to blow the air in the first chamber 201 toward the second chamber 202 .

[0083] In some embodiments, referring to FIG. 2 , the first fan assembly 31 includes a second shell 311 , and the upper end of the second shell 311 is connected to the top wall of the first sub-shell 20 , which is conducive to improving the stability of the connection between the first fan assembly 31 and the first sub-shell 20 .

[0084] 2 , the first blower assembly 31 further includes a first fan 30 . The first fan 30 is located in the second housing 311 and is configured to blow air in the first cavity 201 toward the second cavity 202 .

[0085] For example, the first fan 30 may be a centrifugal fan. Since a centrifugal fan can generate a larger air volume, this is beneficial for increasing the amount of air in the first cavity 201 blown to the air in the second cavity 202 .

[0086] 5 , the first blower assembly 31 further includes a first motor 32 connected to the first fan 30 and configured to rotate the first fan 30. The first fan 30 includes an impeller, and the second housing 311 is disposed on the periphery of the impeller.

[0087] In some embodiments, referring to Figure 2, the first fan assembly 31 also includes a first air outlet 312, and the first air outlet 312 is located on a side of the second shell 311 close to the second cavity 202 (such as the left side). The side of the second shell 311 close to the first heat exchanger 40 (such as the left side) defines the first air outlet 312, and the left side of the second shell 311 passes through the second plate 21, so that the first air outlet 312 is connected to the second cavity 202.

[0088] In some embodiments, air intakes are provided on the front and rear sides of the first fan assembly 31 , a first air outlet 312 is provided on the left end of the first fan 30 , and one end of the first fan 30 close to the first air outlet 312 is passed through the second plate 21 .

[0089] It should be noted that the two first air inlets of the first fan assembly 31 are respectively located at two ends of the second shell 311 in the axial direction of the first fan 30 .

[0090] The first motor 32 drives the first fan 30 to rotate, so that the indoor air enters the first chamber 201 from the air inlet 101, passes through the first fan 30, flows into the second chamber 202, and finally circulates into the room from the air supply unit 102.

[0091] In some embodiments, referring to Figure 2, the indoor unit 301 also includes a sound insulation member 80 (sound insulation cotton), which is connected to the second plate 21. The sound insulation member 80 is located in the first cavity 201 and is located below the first fan assembly 31 near the third sub-shell 10. In this way, the noise generated by the first fan assembly 31 can be reduced.

[0092] 2 , the first heat exchanger 40 is disposed in the second cavity 202 and is configured to exchange heat with the air in the second cavity 202. For example, the first heat exchanger 40 is located between the first air outlet 312 and the air supply unit 102, and is configured to absorb heat from or transfer heat to the air flowing into the second cavity 202.

[0093] In some embodiments, the first heat exchanger 40 is tilted, so that the size of the first heat exchanger 40 can be increased, thereby increasing the contact area between the first heat exchanger 40 and the air in the second cavity 202, which is beneficial to improving the heat exchange efficiency of the air conditioner.

[0094] For example, from top to bottom, the end of the first heat exchanger 40 away from the third sub-housing 10 (e.g., the top of the first heat exchanger 40) is inclined toward the direction of the first heat exchanger 40 away from the first fan assembly 31. The end of the first heat exchanger 40 closer to the third sub-housing 10 (e.g., the bottom of the first heat exchanger 40) is inclined toward the inner left wall of the first sub-housing 20, and the bottom of the first heat exchanger 40 is closer to the right wall of the second chamber 202. Here, "from top to bottom" refers to the direction from the first sub-housing 20 toward the third sub-housing 10.

[0095] In some embodiments, referring to FIG. 13 and FIG. 14 , in the front-to-back direction of the indoor unit 301 , accessories such as pipes and a drainage pump are located in front of the first heat exchanger 40 .

[0096] It should be noted that the first heat exchanger 40 can be a finned heat exchanger, which includes a refrigerant tube that curves from top to bottom and fins that penetrate the refrigerant tube. Referring to Figure 12, the first heat exchanger 40 is provided with fourth plates 41 (end plates) at both ends, and the fourth plates 41 are configured to secure the fins.

[0097] In some embodiments, a connecting pipe (outdoor connecting pipe) is provided at one lateral end of the first heat exchanger 40 , the connecting pipe is connected to the refrigerant pipe, and is configured to achieve connection between the first heat exchanger 40 and the second heat exchanger.

[0098] For example, the connection pipe is provided at the front side of the first heat exchanger 40. It should be noted that there is a space between the front side of the first heat exchanger 40 and the front wall of the first sub-case 20, and the space is configured to accommodate the connection pipe and the like.

[0099] 5, 6, and 7A, a drain pan 50 is provided below the first heat exchanger 40 (heat exchanger), and the drain pan 50 is configured to collect condensed water on the first heat exchanger 40. The drain pan 50 can be connected to a drain pipe connected to the outside of the first sub-housing 20 and discharge the condensed water to the outside of the first sub-housing 20.

[0100] 6 , a water receiving tray 50 may be connected to the first sub-shell 20. The water receiving tray 50 includes a third extension portion 51, which is connected to the bottom of the first shell 1 via a fastener.

[0101] For example, a third extension portion 51 extending outward is provided on the outer side wall of the water receiving tray 50 , and the bottom of the first sub-shell 20 has an inward flange, and the third extension portion 51 is fastened to the flange by screws.

[0102] In some embodiments, referring to Figure 6 , the water tray 50 includes a first area 52 (a diversion area). The water tray 50 also includes a second area 53 (a collection area). The first and second areas 52, 53 are arranged in a longitudinal direction of the indoor unit 301. The first area 52 supports the bottom end of the first heat exchanger 40 and is configured to collect condensation and divert it to the second area 53. Above the second area 53 is a space for connecting pipes and other piping. A drainage pump or other equipment can be located above the second area 53.

[0103] In some embodiments, referring to Figure 6 , the drain pan 50 further includes a third area 54 (auxiliary collection area), which is connected to the left side of the second area 53. In a plane perpendicular to the height of the indoor unit 301, the angle between the first area 52 and the third area 54 is approximately 90 degrees. The third area 54 is configured to collect condensation on the exposed refrigerant pipes on the front side of the fourth plate 41.

[0104] In some embodiments, in the height direction of the indoor unit 301, the side of the first zone 52 away from the second zone 53 is higher than the side of the first zone 52 closer to the second zone 53; and the side of the third zone 54 away from the second zone 53 is higher than the side of the third zone 54 closer to the second zone 53. Due to the height difference design, condensation in the first zone 52 and the third zone 54 will flow to the second zone 53, and then the condensation in the second zone 53 will be discharged through natural drainage or a drainage pump.

[0105] In some embodiments, in the height direction of the indoor unit 301, the bottom height of the third zone 54 is higher than that of the first zone 52, so that a space is formed below the third zone 54, in which driving devices such as the air guide plate 16 and the swing blade 17 can be arranged.

[0106] In the related art, the bottom end of the water receiving tray 50 usually does not exceed the first sub-shell 20 , that is, the water receiving tray 50 is located inside the first sub-shell 20 .

[0107] In some embodiments, referring to Figure 4, the third sub-shell 10 also includes a fourth cavity 18 (concave cavity), the fourth cavity 18 is located between the air inlet frame 12 and the air outlet frame 13, the second extension portion 121 is located between the fourth cavity 18 and the air inlet portion 101, and the second plate 21 is connected to the top of the second extension portion 121.

[0108] For example, the fourth cavity 18 is located between the air inlet portion 101 and the air supply portion 102 . The bottom of the water receiving tray 50 is located in the fourth cavity 18 .

[0109] It should be noted that the bottom wall of the water receiving pan 50 extends into the fourth chamber 18. In this way, since the bottom wall of the water receiving pan 50 protrudes downward, the bottom end of the first heat exchanger 40 can extend downward following the bottom wall of the water receiving pan 50, thereby increasing the size of the first heat exchanger 40, increasing the heat exchange area of ​​the first heat exchanger 40, and improving the heat exchange efficiency of the air conditioner.

[0110] It can be understood that the size of the first heat exchanger 40 is increased by extending the water receiving tray 50 into the fourth chamber 18, without increasing the volume of the entire indoor unit 301. Therefore, the heat exchange area of ​​the first heat exchanger 40 can be increased while ensuring that the volume of the indoor unit 301 remains unchanged, thereby improving the heat exchange effect of the air conditioner.

[0111] In some embodiments, referring to Figures 7A and 10, the first zone 52 includes a first section 521 (support section), and from top to bottom (such as the direction from top to bottom in Figure 7A), the lower end of the first section 521 is inclined toward the air supply part 102, and the inclination angle of the first section 521 is roughly parallel to the inclination angle of the bottom end of the first heat exchanger 40. The first section 521 is configured to support the first heat exchanger 40.

[0112] The first section 521 can be located at the connection between the right side wall and the bottom wall of the water receiving tray 50, so that the inclination angle between the first heat exchanger 40 and the height direction of the indoor unit 301 can be as large as possible. In this way, the size of the first heat exchanger 40 can be as large as possible, which is beneficial to improving the heat exchange efficiency of the air conditioner.

[0113] It should be noted that the inclined design of the first section 521 can, on the one hand, support the first heat exchanger 40 , and on the other hand, guide the condensation at the bottom of the first heat exchanger 40 to flow downward along the first section 521 .

[0114] In some embodiments, referring to Figure 7A, the first section 521 includes a first support portion 5211 (support portion), and the first support portion 5211 (protrusion) protrudes toward the first heat exchanger 40. One end (such as the bottom end) of the first heat exchanger 40 abuts against the first support portion 5211. This is conducive to improving the stability of the connection between the first heat exchanger 40 and the first sub-shell 20.

[0115] In some embodiments, referring to Figure 7B, the width of the first support portion 5211 is M1, and the thickness of the first heat exchanger 40 is M2. It should be noted that M1 is smaller than M2, so that the bottom end of the first heat exchanger 40 is supported by the first support portion 5211, reducing the obstruction of the first section 521 to the bottom end of the first heat exchanger 40, and increasing the heat exchange area of ​​the bottom end of the first heat exchanger 40 that can exchange heat with the air in the second cavity 202. In this way, the heat exchange efficiency of the air conditioner can be improved.

[0116] In some embodiments, referring to FIG7A , the first zone 52 further includes a second section 522 (a guide section), the first end (e.g., the right end) of the second section 522 being connected to the first section 521. In the height direction of the indoor unit 301, the height of the inner wall surface of the second section 522 increases in the horizontal direction from the air inlet portion 101 to the air supply portion 102 (e.g., from right to left in FIG4 ).

[0117] For example, the height of the second end (such as the left end) of the second section 522 is higher than the height of the first end (right end) of the second section 522. In this way, the height of the connection between the right end of the second section 522 and the first section 521 can be lowered, and the inner wall surface of the second section 522 is a concave arc.

[0118] 8 , in the related art, there is no second section 522 in the water receiving tray 50, and the side wall M of the water receiving tray 50 near the air supply portion 102 is vertical. Therefore, the air at the bottom end of the first heat exchanger 40 near the air supply portion 102 will be blocked by the side wall M when flowing in the water receiving tray 50, and will flow upward, colliding with the airflow blown out from the middle of the first heat exchanger 40, resulting in air volume loss.

[0119] In some embodiments, the difference between the water receiving tray 50 in Figure 7A and the water receiving tray 50 in Figure 8 is that the water receiving tray 50 in Figure 7A includes a second section 522, and the inner wall surface of the second section 522 is along the direction of the air flow (such as the direction of the arrow in Figure 8), and the height of the inner wall surface of the second section 522 tends to increase. The inner wall surface of the second section 522 guides the air flow, so that the airflow of the first heat exchanger 40 near the bottom of the air supply part 102 can flow smoothly to the air supply part 102, avoiding the impact with the airflow blown out from the middle of the first heat exchanger 40, which is conducive to reducing the air volume loss.

[0120] In addition, the height of the inner wall surface of the left end of the second section 522 is higher than the height of the inner wall surface of the right end of the second section 522. This is also conducive to the condensation flowing to a lower place (such as the right end of the second section 522) and also plays a guiding role for the condensation.

[0121] In some embodiments, the inner wall of the second section 522 is curved. After the air flows through the first heat exchanger 40, the air at the bottom needs to flow out from the surface of the water receiving tray 50. The curved design of the second section 522 allows for a smooth transition of the airflow, increases the airflow area, and helps eliminate vortices and reduce noise.

[0122] As the curvature C of the second section 522 increases, this helps reduce the obstruction of the second section 522 to the airflow, increases the airflow passing through the bottom of the first heat exchanger 40, and while ensuring the heat exchange performance of the first heat exchanger 40, also increases the water capacity of the water receiving tray 50.

[0123] In some embodiments, the curvature C of the second section 522 satisfies the following: C ≥ the first parameter value. For example, the first parameter value may be 0.002, 0.004, or 0.006. If the curvature C of the second section 522 is too small, such as with line X in FIG9 , the middle portion of the second section 522 is higher in the height direction of the indoor unit 301. This, on the one hand, blocks the air flow through the first heat exchanger 40 and reduces the outgoing air flow. This also reduces the air flow passing through the bottom of the first heat exchanger 40, which can reduce the heat exchange performance of the first heat exchanger 40 and the water capacity of the water tray 50.

[0124] As the curvature C of the second section 522 decreases, the curvature C of the inner wall surface of the second section 522 satisfies the relationship: it is beneficial to reduce the upward flow angle of the air flow in the second half of the line Y close to the air supply part 102, which is beneficial to reduce the impact of the air flowing out of the middle part of the first heat exchanger 40 and reduce the air volume loss.

[0125] In some embodiments, the curvature C of the second segment 522 satisfies the following: C ≤ the second parameter value. For example, the second parameter value can be 0.014, 0.012, 0.01, or 0.006. If the curvature C of the second segment 522 is too large, such as along line Y in FIG9 , the airflow at the rear portion of line Y near the air supply portion 102 will have a steeper upward flow angle, colliding with the air flowing out of the middle portion of the first heat exchanger 40 and causing air volume loss.

[0126] In some embodiments, referring to Figure 7A, the water receiving tray 50 also includes a third section 55 (air outlet transition section), the first end (such as the right end) of the third section 55 is connected to the second end (such as the left end) of the second section 522, and the second end (such as the left end) of the third section 55 is connected to the air outlet frame 13. The third section 55 is also the air outlet end of the water receiving tray 50, and the inner wall surface of the third section 55 is an upward convex arc.

[0127] In some embodiments, referring to FIG3 , the air outlet frame 13 further includes a first extension portion 131 (second extension wall), the water receiving tray 50 is connected to the top end of the first extension portion 131, and the side of the water receiving tray 50 near the first heat exchanger 40 and the side of the first extension portion 131 near the first heat exchanger 40 are connected by a third section 55. The side of the water receiving tray 50 near the first heat exchanger 40 is connected to the inner surface of the first extension portion 131.

[0128] In some embodiments, the right end of the third section 55 is located at the top of the air outlet frame 13. For example, the side wall of the air outlet frame 13 near the air inlet portion 101 is defined as the first extension portion 131 (second extension wall), and the second end (e.g., the right end) of the third section 55 can abut the top of the first extension portion 131.

[0129] The side surface of the third section 55 close to the first heat exchanger 40 (such as the upper side surface) forms the side surface of the air duct. The upper side surface of the third section 55 is the third guide surface 551 (air outlet transition guide surface). Referring to Figure 10, the third guide surface 551 is connected between the inner wall surface of the second section 522 and the first guide surface 13A, forming part of the inner wall of the air duct. The third guide surface 551 is arc-shaped, so that the airflow flows smoothly from the second section 522 to the first guide surface 13A, which is conducive to reducing the noise of the airflow flowing through the third guide surface 551.

[0130] In some embodiments, along the airflow direction, the distance between at least a portion of the first guide surface 13A close to the third opening 112 and the second plate 21 tends to increase.

[0131] For example, in the width direction of the indoor unit 301 , the upper end of the first guide surface 13A is closer to the second plate 21 than the lower end of the first guide surface 13A.

[0132] In some embodiments, along the airflow direction, the distance between at least a portion of the second guide surface 13B close to the third opening 112 and the second plate 21 tends to increase.

[0133] For example, in the width direction of the indoor unit 301 , the upper end of the second guide surface 13B is closer to the second plate 21 than the lower end of the second guide surface 13B.

[0134] It should be noted that at least one of the first guide surface 13A or the second guide surface 13B is tilted so that the lower end of the air supply portion 102 is tilted in a direction away from the air inlet portion 101 .

[0135] Since the first heat exchanger 40 is tilted in the second cavity 202, the air flow flows obliquely to the lower left after flowing out of the first heat exchanger 40. In some embodiments of the present disclosure, the air supply part 102 is also arranged to be tilted. From the perspective of the air flow path, the inclination angle of the air supply part 102 is roughly consistent with the air flow direction of the side of the first heat exchanger 40 close to the air supply part 102 (such as the air outlet side), which can reduce the turning of the air flow, reduce wind resistance, and be more conducive to the delivery of the air flow, thereby reducing the noise of the air flow in the second cavity 202.

[0136] In addition, the air supply portion 102 is away from the air inlet portion 101 and is tilted, which increases the distance between the third opening 112 and the fourth opening 113 , thereby preventing the air supply and air intake air from flowing in series below the third sub-shell 10 .

[0137] In some embodiments, in the height direction of the indoor unit 301 , the air supply portion 102 is inclined from top to bottom in a direction away from the water receiving tray 50 .

[0138] In some embodiments, along the direction of the first air outlet 312 toward the first heat exchanger 40, the extension line of the side wall of the second shell 311 at the position where the first air outlet 312 is formed is located on the windward side of the first heat exchanger 40. Referring to Figure 10, on the longitudinal section of the first fan assembly 31 and the first heat exchanger 40, the area where the extension line of the side wall of the first air outlet 312 intersects with the windward side of the first heat exchanger 40 is the facing area; the distance from any point in the facing area to any point on the windward end (such as the right end) to the top of the first heat exchanger 40 is defined as L1, and the length from the top of the first heat exchanger 40 to the bottom of the first heat exchanger 40 is L, and L1 and L satisfy the relationship: 1 / 4≤L1 / L≤2 / 3.

[0139] The fan's facing area accounts for 1 / 4 to 2 / 3 of the heat exchanger's length. This ensures that the air outlet of the first fan assembly 31 faces the center of the first heat exchanger 40, ensuring smooth airflow. If the air outlet area of ​​the first fan assembly 31 were located at the end of the first heat exchanger 40, the airflow would be diverted to the corners of the air duct, hindering airflow.

[0140] In some embodiments, the first heat exchanger 40 is inclined at an angle α relative to the width direction of the indoor unit 301 ; and the air supply portion 102 is inclined at an angle β relative to the height direction of the indoor unit 301 .

[0141] In some embodiments, if α and β satisfy: |α-β|>20°, this will cause a large angle between the airflow direction on the outlet side of the first heat exchanger 40 and the flow direction of the air supply part 102, causing the airflow on the outlet side of the first heat exchanger 40 to flow toward the inner wall of the first sub-shell 20 or toward the bottom wall of the third sub-shell 10.

[0142] In some embodiments, if α and β satisfy: |α-β|≤20°, for example, |α-β| is 5°, 10°, 15° or 20°, etc., the airflow direction on the outlet side of the first heat exchanger 40 can be roughly consistent with the flow direction of the air supply part 102, thereby ensuring the smoothness of the airflow.

[0143] It should be noted that as the angle value of |α-β| decreases, the airflow direction on the outlet side of the first heat exchanger 40 can be made nearly parallel to the flow direction of the air supply part 102, which is conducive to increasing the amount of airflow passing through the air supply part 102.

[0144] In some embodiments, referring to FIG. 10 , the first guide surface 13A is inclined at an angle β1 relative to the vertical, and the second guide surface 13B is inclined at an angle β2 relative to the vertical. The values ​​of β1 and β2 may be equal or unequal.

[0145] In some embodiments, if α and β1 satisfy: |α-β1|≤20°, and α and β2 also satisfy: |α-β2|≤20°, referring to FIG11 , which is a wind speed cloud map in the indoor unit 301, it can be seen from the figure that in the air duct of the indoor unit 301, basically no vortex is generated in the wind speed flow field, and the air flow is relatively smooth.

[0146] 10 , the first guide surface 13A may be arc-shaped at least in the portion near the third opening 112, thereby facilitating smooth and unimpeded airflow within the second cavity 202. For example, in FIG10 , the lower portion of the first guide surface 13A is arc-shaped.

[0147] In some embodiments, referring to FIG. 10 , at least a portion of the second guide surface 13B close to the third opening 112 may be arc-shaped, which is beneficial for smooth and unimpeded airflow in the second cavity 202 .

[0148] In some embodiments, a portion of the second guide surface 13B close to the third opening 112 is a plane. For example, the second guide surface 13B may be an inclined plane.

[0149] 10 , 12 and 13 , the water tray 50 is generally located below the right portion of the first heat exchanger 40 , and the air supply portion 102 is located below (eg, directly below) the left portion of the first heat exchanger 40 .

[0150] In some embodiments, the bottom surface of the third sub-shell 10 is used as the third reference surface, and the orthographic projection of the air supply portion 102 on the third reference surface is located within the orthographic projection of the first heat exchanger 40 on the third reference surface.

[0151] For example, at least a portion of the first heat exchanger 40 is located above the air supply portion 102. Condensation generated on the upper portion of the first heat exchanger 40 flows downward along the fins into the water receiving tray 50.

[0152] However, when condensation occurs on the refrigerant pipe exposed outside the fourth plate 41 of the first heat exchanger 40 , the condensation may drip directly because it is not guided.

[0153] It should be noted that the portion of the refrigerant tube exposed outside the fourth plate 41 is called the first tube, and the first tube located at the top is called the first sub-tube 42 (top exposed tube).

[0154] The condensation generated by the first sub-tube 42 at the front end flows downward into the third area 54 of the water receiving tray 50 .

[0155] However, since there is a connection gap S between the water tray 50 and the left inner wall of the first sub-shell 20 , condensation near the top is likely to spread out from the connection gap S when dripping directly, causing the condensation to flow out from the third opening 112 .

[0156] 13 to 16 , the indoor unit 301 further includes a fifth plate 62 (water guide plate) disposed below the first sub-tube 42 and configured to guide condensation generated by the first sub-tube 42 into the water receiving tray 50 .

[0157] For example, the fifth plate 62 is tilted, and in the height direction of the indoor unit 301, the first end (such as the bottom end) of the fifth plate 62 close to the water receiving tray 50 is lower than the second end (such as the top end) of the fifth plate 62 away from the water receiving tray 50.

[0158] Taking the bottom surface of the third sub-housing 10 as the third reference plane, the orthographic projection of the top edge of the first sub-tube 42 on the third reference plane lies within the outline of the orthographic projection of the fifth plate 62 on the third reference plane. The orthographic projection of the fifth plate 62 on the third reference plane also lies within the outline of the orthographic projection of the inner bottom surface of the water receiving tray 50 on the third reference plane. It should be noted that, when projected in the height direction of the indoor unit 301, the orthographic projection of the top edge of the first sub-tube 42 lies within the outline of the orthographic projection of the fifth plate 62, ensuring that condensation generated by the first sub-tube 42 drips onto the fifth plate 62. Furthermore, the orthographic projection of the bottom end of the fifth plate 62 lies within the outline of the orthographic projection of the water receiving tray 50, enabling the fifth plate 62 to direct condensation to the water receiving tray 50.

[0159] It can be understood that the present disclosure provides a fifth plate 62 below the first sub-tube 42. The fifth plate 62 can guide the condensation dripping from the first sub-tube 42 into the water receiving tray 50, thereby preventing the condensation from spreading out from the connecting gap S between the water receiving tray 50 and the first sub-shell 20 (such as overflowing).

[0160] In some embodiments, the inclination direction of the fifth plate 62 may be parallel to the inclination direction of the first heat exchanger 40 , that is, in the height direction of the indoor unit 301 , the bottom end of the fifth plate 62 is inclined toward the air inlet 101 .

[0161] In some embodiments, referring to Figures 14 and 15, with the bottom surface of the third sub-shell 10 as the third reference surface, there is a gap D1 between the projection of the top edge of the first sub-tube 42 on the third reference surface and the projection of the top of the fifth plate 62 on the third reference surface. In this way, condensation dripping from the first sub-tube 42 can be prevented from splashing out from the top of the fifth plate 62.

[0162] In some embodiments, referring to Figure 16, with the bottom surface of the third sub-shell 10 as the third reference surface, there is a gap D2 between the projection of the bottom end of the fifth plate 62 on the third reference surface and the projection of the edge of the water receiving tray 50 on the third reference surface. In this way, condensation can be prevented from splashing from the bottom end of the fifth plate 62 to the connecting gap S.

[0163] It should be noted that the length of D2 may be less than half the width of the first region 52 , so that the length of the fifth plate 62 can be reduced, material can be saved, and cost can be reduced.

[0164] In some embodiments, the fifth plate 62 is connected to the fourth plate 41 .

[0165] For example, the fourth plate 41 is a sheet metal plate, and the edge of the fourth plate 41 is bent outward to form the fifth plate 62 , which facilitates processing and improves production efficiency.

[0166] For another example, the fourth plate 41 includes a second flange, which is located at the lower end of the fourth plate 41, and the fifth plate 62 is connected to the second flange. In this way, the fifth plate 62 can be easily replaced separately.

[0167] In some embodiments, referring to Figures 13 and 16, the indoor unit 301 also includes a support portion 60 (support plate), and the second support portion 60 (support plate) is connected between the water receiving tray 50 and the fourth plate 41 of the first heat exchanger 40, and the second support portion 60 supports and fixes the fourth plate 41.

[0168] In some embodiments, the fifth plate 62 is connected to the second support portion 60. The fifth plate 62 can be connected to a top end of the second support portion 60.

[0169] In some embodiments, the second support portion 60 includes a first flange 61, which is located at the upper end of the second support portion 60. The first flange 61 is abutted against the second flange, and then fastened together by fasteners such as screws. In this way, the stability of the connection between the second support portion 60 and the fifth plate 62 can be improved.

[0170] For example, part of the first flange 61 forms the fifth plate 62 , which is beneficial for reducing the number of installation components (such as the fifth plate 62 ) and facilitates the processing of the water receiving tray 50 .

[0171] For another example, the second support portion 60 and the fourth plate 41 can also be connected by a combination of a hook and a screw: a hook portion is provided on the first flange 61, and a mounting portion (such as a through groove) is provided on the second flange, and the hook portion is adapted to the mounting portion. The cooperation between the hook portion and the mounting portion can play a positioning and limiting role, which facilitates the connection operation of the second support portion 60 and the fourth plate 41, and can also save the number of screws and improve the disassembly and assembly efficiency.

[0172] In some embodiments, the bottom end of the second support portion 60 has a third flange (e.g., a bottom flange), which abuts against the water receiving tray 50. The provision of the third flange can increase the abutment area between the second support portion 60 and the water receiving tray 50, thereby improving the reliability and stability of the connection.

[0173] In some embodiments, the left end of the second support portion 60 has a fourth flange (side flange), and the fourth flange can be connected to the side wall of the first sub-shell 20 by screws. This is conducive to ensuring the stability of the second support portion 60 in the first sub-shell 20.

[0174] In some embodiments, the edges of the fifth plate 62 are rounded to avoid scratching or cutting the pipeline.

[0175] In some embodiments, condensation generated by the first sub-tube 42 may drip onto the air supply unit 102. A fifth plate 62 is also provided at the rear end of the first heat exchanger 40 to guide the condensation to the water receiving tray 50, thereby preventing the condensation generated by the first sub-tube 42 from dripping onto the air supply unit 102.

[0176] In some embodiments, the air conditioner also has an exhaust function, which can be used in kitchens, bathrooms and other environments. Therefore, the air conditioner also includes an exhaust channel, which is configured to exhaust indoor gas.

[0177] Referring to Figure 17 , the solid arrows indicate the direction of heat exchange airflow, and the dashed arrows indicate the direction of exhaust airflow. In the related art, a second opening 712 (exhaust port) is provided on the sidewall of the first sub-housing 20. This second opening 712 communicates with the outdoor space via a pipe. When the second opening 712 is open, the first fan assembly 31 operates to discharge air from the second opening 712 to the outside, achieving exhaust functionality. However, in this configuration, the exhaust duct and the heat exchange duct share a common air channel.

[0178] When the temperature control function and exhaust function of the air conditioner are turned on simultaneously, after the airflow passes through the first heat exchanger 40, part of it is discharged from the second opening 712, and the other part is sent into the room through the third opening 112. The exhaust airflow also passes through the first heat exchanger 40 for heat exchange, which will result in energy waste and reduce the heat exchange efficiency of the air conditioner.

[0179] When the temperature adjustment function of the air conditioner is turned off and only the exhaust function is performed, or when the temperature adjustment function and the exhaust function of the air conditioner are turned on at the same time, the wind resistance will increase when the airflow passes through the first heat exchanger 40, resulting in a decrease in exhaust efficiency.

[0180] To avoid the above-mentioned problems, in some embodiments of the present disclosure, referring to FIG. 18 , where solid arrows indicate the direction of heat exchange airflow and dashed arrows indicate the direction of exhaust airflow, the first shell 1 further includes a third chamber 711 (exhaust chamber), which is in communication with the outside of the room and with the first chamber 201. The second chamber 202 and the third chamber 711 are located at opposite ends of the first chamber 201.

[0181] For example, the first chamber 201 is centrally disposed between the second chamber 202 and the third chamber 711 , so that the volume of the indoor unit 301 is reduced.

[0182] For another example, when the air conditioner only needs to turn on the exhaust function, the first fan assembly 31 can stop working. This is not only beneficial to improving the heat exchange efficiency of the air conditioner, but also beneficial to reducing the noise of the air conditioner.

[0183] It should be noted that the third cavity 711 is connected to the first cavity 201 and does not pass through the second cavity 202 .

[0184] In some embodiments, referring to FIG. 21 , the indoor unit 301 further includes a second fan assembly 721 . The second fan assembly 721 is located in the third cavity 711 . The second fan assembly 721 is configured to blow the air in the third cavity 711 toward the outdoor space.

[0185] 21 , the second fan assembly 721 includes a second fan 72 (exhaust fan) configured to cause indoor air to be discharged from the third chamber 711 to the outdoor space.

[0186] For example, when the second fan assembly 721 is working and the first fan assembly 31 stops working, indoor air enters from the air inlet grille 14, then flows into the first cavity 201 (air inlet cavity) along the air inlet portion 101, and the air in the first cavity 201 is blown to the third cavity 711 and finally discharged to the outdoor space.

[0187] It should be noted that the air entering the first cavity 201 includes a first part and a second part.

[0188] For another example, when the first fan assembly 31 and the second fan assembly 721 are working at the same time, the indoor air enters from the air inlet grille 14, then flows into the first chamber 201 along the air inlet portion 101, the first part of the air in the first chamber 201 is blown to the second chamber 202, and then circulates into the room through the third opening 112, the second part of the air in the first chamber 201 flows into the third chamber 711, and is finally discharged to the outdoor space.

[0189] For another example, when the first fan assembly 31 is working and the second fan assembly 721 stops working, the indoor air enters from the air inlet grille 14, and then flows into the first cavity 201 (air inlet cavity) along the air inlet portion 101, so that the air in the first cavity 201 is blown to the second cavity 202, and finally the air after heat exchange is discharged into the indoor space.

[0190] In some embodiments, by setting up a third chamber 711 directly connected to the first chamber 201, when the exhaust is working, the exhaust air flow does not need to pass through the first heat exchanger 40 of the second chamber 202, but is directly discharged from the third chamber 711, thereby improving the exhaust efficiency of the air conditioner.

[0191] In some embodiments, referring to Figure 21, the first shell 1 further includes a second sub-shell 70 (exhaust shell), a third cavity 711 is formed in the second sub-shell 70, a second fan 72 is provided in the second sub-shell 70, and the second sub-shell 70 is located on one side of the first sub-shell 20.

[0192] For example, the outer sidewalls of the second sub-shell 70 and the first sub-shell 20 can be integrally formed, which facilitates the production and processing of the first shell 1 .

[0193] In the related art, referring to Figure 19 , some air conditioners have completely independent heat exchange and exhaust airflows. For example, the first chamber 201 corresponds to a portion of the air inlet grille 14, and the third chamber 711 corresponds to another portion of the air inlet grille 14. This allows the two airflows to be completely independent.

[0194] However, the first shell 1 of this structure needs to be redesigned and processed, which will increase the cost of manufacturing the first shell 1. It is not enough to directly add an exhaust structure to the air conditioner in the related art (such as an air conditioner without exhaust function).

[0195] In some embodiments of the present disclosure, the exhaust airflow and the heat exchange airflow share the air supply portion 102 and the first cavity 201 , and a second sub-shell 70 can be directly added to the air conditioner in the related art to meet the exhaust function of the air conditioner.

[0196] 20 to 22 , a third cavity 711 is formed in the second sub-case 70, and the second sub-case 70 is located on one side of the first sub-case 20. For example, the second sub-case 70 is connected to the sidewall of the first sub-case 20 forming the first cavity 201.

[0197] 21 and 22 , a second fan assembly 721 is disposed within the second sub-housing 70. The second sub-housing 70 further includes a second opening 712 disposed on a sidewall of the second sub-housing 70. The second opening 712 communicates with the third cavity 711 and is configured to allow air within the third cavity 711 to flow to the outdoor space.

[0198] In some embodiments, when there is no requirement for an exhaust function for the air conditioner, the second sub-case 70 may not be installed, and the air conditioner without the second sub-case 70 may be installed in the usage scenario.

[0199] In some embodiments, when the air conditioner requires an exhaust function, the second sub-shell 70 can be directly assembled to the side of the first sub-shell 20 close to the first cavity 201. This meets the needs of various scenarios and can reduce costs.

[0200] In some embodiments of the present disclosure, the first sub-shell 20 and the second sub-shell 70 are a two-body connection structure, which allows the second sub-shell 70 to be installed on demand, which not only expands the versatility of the air conditioner but also reduces the cost of producing the air conditioner.

[0201] In some embodiments, referring to FIG. 22 , the first housing 1 further includes a first plate 111. The side plate of the first sub-housing 20 adjacent to the second sub-housing 70 is the first plate 111. The first housing 1 further includes a first opening 203. The first plate 111 is provided with the first opening 203. The third chamber 711 and the first chamber 201 are connected through the first opening 203. This ensures that the heat exchange airflow and the exhaust airflow have opposite separation paths, ensuring that the two airflows do not interfere with each other.

[0202] For example, the first sub-case 20 and the second sub-case 70 are arranged along the width direction of the indoor unit 301 , that is, the first sub-case 20 and the second sub-case 70 are arranged left and right, and the second sub-case 70 is connected to the right end of the first sub-case 20 .

[0203] It should be noted that the second cavity 202 and the third cavity 711 are respectively located on the left and right sides of the first cavity 201. For example, the second cavity 202 is located on the left side of the first cavity 201, and the third cavity 711 is located on the right side of the first cavity 201.

[0204] It can be understood that the heat exchange airflow flows from the first chamber 201 to the left into the second chamber 202 , and the exhaust airflow flows from the first chamber 201 to the right into the third chamber 711 .

[0205] In some embodiments, the second sub-shell 70 is in the shape of a rectangular box, and one end of the second sub-shell 70 facing the first sub-shell 20 is open. The second sub-shell 70 can be connected to the first sub-shell 20 by fasteners such as screws.

[0206] For example, the first opening 203 is a through hole provided on the right side wall of the first sub-case 20 .

[0207] In some embodiments, referring to FIG. 20 , with the plane of the second plate 21 serving as the second reference plane, the outline of the orthographic projection of the second sub-housing 70 on the second reference plane lies within the outline of the orthographic projection of the first sub-housing 20 on the second reference plane. It will be appreciated that the outer contour of the second sub-housing 70 does not extend beyond the outer contour of the first sub-housing 20. This ensures that the dimensions of the air conditioner in the front-to-back direction of the indoor unit 301 and in the height direction (e.g., the vertical direction) of the indoor unit 301 remain unchanged, with only the dimensions in the width direction (e.g., the horizontal direction) of the indoor unit 301 increasing.

[0208] For example, when the air conditioner needs to be exhausted, a second sub-shell 70 is installed on one side (such as the right side) of the first sub-shell 20. The size of the second sub-shell 70 in the front-to-back direction of the indoor unit 301 is smaller than the size of the first sub-shell 20 in the front-to-back direction of the indoor unit 301, and the size of the second sub-shell 70 in the height direction of the indoor unit 301 is smaller than the size of the first sub-shell 20 in the height direction of the indoor unit 301. Since the size of the second sub-shell 70 is smaller than the size of the first sub-shell 20, the overall volume of the indoor unit 301 in some embodiments of the present disclosure is smaller than the overall volume of the indoor unit in the related art.

[0209] In some embodiments, the second opening 712 can be provided on the side wall of the second sub-shell 70 opposite to the first opening 203. For example, the first opening 203 is located on the first plate 111 (such as the right side wall) of the first sub-shell 20, and the second opening 712 is provided on the right side wall of the second sub-shell 70. This is conducive to conforming to the overall direction of the exhaust airflow flowing to the right, making the exhaust smoother, thereby reducing the airflow noise at the air conditioner.

[0210] It should be noted that the second opening 712 can also be provided on the front side wall or the rear side wall of the second sub-shell 70 , which is conducive to the second opening 712 being connected to the outdoor space through a pipeline.

[0211] In some embodiments, the first fan 30 is a centrifugal fan. For example, the air intake of the first fan 30 is located at the front and rear sides of the first fan 30 (e.g., in the axial direction of the first fan 30), and the first air outlet 312 of the first fan 30 faces the left side. The heat exchange airflow enters from both sides of the axial direction of the first fan 30 and is discharged to the left side of the first fan 30.

[0212] In some embodiments, the first opening 203 includes a first sub-opening 204. Taking the plane of the first plate 111 as the first reference plane, the orthographic projection of the first sub-opening 204 on the first reference plane is located within the outline of the orthographic projection of the second shell 311 on the first reference plane.

[0213] For example, the first sub-opening 204 is located directly to the right of the second shell 311, so that the exhaust airflow flows into the first sub-opening 204 from the right side of the first fan assembly 31, and the heat exchange airflow flows into the first fan 30 from the front and rear sides of the first fan 30, so that the heat exchange airflow and the exhaust airflow are separated as much as possible in the paths of the first cavity 201, which is beneficial to avoid the mutual influence of the two airflows in the first cavity 201 when the first fan assembly 31 and the second fan assembly 721 are working at the same time.

[0214] In some embodiments, referring to FIG. 22 , the second blower assembly 721 further includes a second motor 722 (exhaust motor), which is connected to the second fan 72 , and is configured to drive the second fan 72 to rotate.

[0215] 21 , the second fan assembly 721 further includes a third housing 71 . The second fan 72 is located in the third housing 71 .

[0216] In some embodiments, the second fan 72 (exhaust fan) is a centrifugal fan. The second fan assembly 721 further includes a second air outlet located on a side of the third shell 71 away from the first cavity 201 (eg, the right side), and connected to the outdoor space.

[0217] For example, the air intake of the second fan 72 is located at the front and rear sides of the second fan 72 , and the second air outlet of the second fan assembly 721 faces right, corresponding to the second opening 712 .

[0218] For example, the exhaust air flow will enter from both axial sides of the second fan 72 and discharge toward the right side of the second fan 72. In this way, the air outlet direction of the first fan assembly 31 (such as the first air outlet) and the air outlet direction of the second fan assembly 721 (such as the second air outlet) are opposite, which is beneficial to avoid the two air flows affecting each other when the air is discharged.

[0219] It should be noted that the axes of the first fan assembly 31 and the second fan assembly 721 are parallel. For example, the axial direction of the first fan 30 is substantially parallel to the axial direction of the second fan 72, and the first air outlet 312 of the first fan 30 and the second air outlet of the second fan 72 face opposite directions.

[0220] In some embodiments, the air inlet of the second fan 72 is located on a different plane from the first sub-opening 204. For example, the plane where the air inlet of the second fan 72 is located is substantially perpendicular to the plane where the first sub-opening 204 is located. This helps to avoid interference between the air inlet of the second fan 72 and the first sub-opening 204.

[0221] In some embodiments, the second fan 72 and the first sub-opening 204 are arranged in the front-to-back direction, so that the exhaust airflow blown into the third cavity 711 by the first sub-opening 204 is located upstream of the air intake of the second fan 72, ensuring that the exhaust airflow enters the second fan 72 more smoothly.

[0222] In some embodiments, referring to Figure 22, the first sub-opening 204 is closer to the first fan 30 than the second fan 72, and the first fan 30 is closer to the front side of the indoor unit 301 than the first sub-opening 204. In this way, the airflow passing through the first sub-opening 204 can be prevented from being blocked by the first plate 111, which is conducive to increasing the amount of airflow flowing into the second fan 72.

[0223] In some embodiments, the plane where the first plate 111 is located is used as the first reference plane, and the orthographic projection of the second shell 311 on the first reference plane partially coincides with the orthographic projection of the third shell 71 on the first reference plane, so that the second shell 311 and the third shell 71 are staggered as much as possible in the front-to-back direction. In this way, the air intakes of the second fan 72 and the first fan 30 on the same side can be spaced as far apart as possible, so that the exhaust airflow and the heat exchange airflow are separated in the first cavity 201.

[0224] In some embodiments, the orthographic projection of the second shell 311 on the first reference plane does not overlap with the orthographic projection of the third shell 71 on the first reference plane, that is, the second shell 311 and the third shell 71 are completely offset in the left-right direction.

[0225] In some embodiments, the second housing 311 and the third housing 71 are completely staggered. For example, the second fan 72 is closer to the front of the first housing 1 than the first fan 30. Therefore, the front air intake of the second fan 72 is farther away from the front air intake of the first fan 30. However, this completely staggered arrangement results in a larger front-to-back size of the air conditioner.

[0226] In some embodiments, the second fan 72 and the first fan 30 are partially staggered, and at least half of the second fan 72 is staggered with the first fan 30 in the front-to-back direction. This can maximize the staggered distance between the two without increasing the size of the air conditioner.

[0227] In some embodiments, the first opening 203 further includes a second sub-opening 205. The first sub-opening 204 and the second sub-opening 205 are spaced apart on the first plate 111 along the axial direction of the second fan 72. The second sub-opening 205 is located on a side of the second fan 72 away from the first fan 30.

[0228] For example, in the front-to-back direction of the indoor unit 301 , the second fan 72 is closer to the front side of the indoor unit 301 than the first fan 30 , the first sub-opening 204 is located behind the second fan 72 , and the second sub-opening 205 is located in front of the second fan 72 .

[0229] The exhaust airflow flows from the first sub-opening 204 to the air intake port on the first side (such as the rear side) of the second fan 72, and the exhaust airflow flows from the second sub-opening 205 to the air intake port on the second side (such as the front side) of the second fan 72. This is conducive to the exhaust airflow entering the third shell 71 through the air intake port of the second fan 72, thereby increasing the amount of exhaust airflow flowing to the outdoor space.

[0230] In some embodiments, on the projection of the first plate 111 where the first opening 203 is located, the second sub-opening 205 does not overlap with the suction end of the second fan 72. In this way, the airflow can be blown directly from the second sub-opening 205 to the front of the front suction port of the second fan 72, ensuring smoother flow of the exhaust airflow.

[0231] For example, the orthographic projection of the second sub-opening 205 on the first reference plane does not overlap with the orthographic projection of the third shell 71 on the first reference plane. This allows airflow from the second sub-opening 205 to be blown directly toward the front side of the third shell 71 (such as the air intake of the second fan 72), ensuring smoother exhaust airflow. It should be noted that if the second sub-opening 205 and the third shell 71 are staggered in the left-right direction, the front-to-back dimensions of the air conditioner will need to be increased.

[0232] In some embodiments, in order not to increase the front-to-back dimension of the air conditioner, the dimension of the second sub-opening 205 in the front-to-back direction may be relatively small, thereby reducing the exhaust air volume.

[0233] To this end, in some embodiments, referring to FIG. 22 , the orthographic projection of the second sub-opening 205 on the first reference plane and the orthographic projection of the third shell 71 on the first reference plane at least partially overlap.

[0234] For example, the area of ​​the second sub-opening 205 that overlaps with the second fan 72 is less than half the area of ​​the orthographic projection of the second sub-opening 205 on the first reference plane. In this way, although part of the exhaust airflow is blocked by the second fan 72, the exhaust air volume is guaranteed without increasing the size of the air conditioner.

[0235] In some embodiments, referring to FIG. 22 , the relative positions of the first fan 30 and the first motor 32 are opposite to the relative positions of the second fan 72 and the second motor 722 .

[0236] In some embodiments, in the axial direction of the first fan 30, the two ends of the first fan 30 are the first end (front side) of the first fan 30 and the second end (rear side) of the first fan 30, and the two ends of the second fan 72 are the first end (front side) of the second fan 72 and the second end (rear side) of the second fan 72; the first end of the first fan 30 and the first end of the second fan 72 are located on the same side; the first motor 32 is connected to the first end (front side) of the first fan 30, and the second motor 722 is connected to the second end (rear side) of the second fan 72.

[0237] For example, the first motor 32 is located at the front side of the first fan 30 , and the second motor 722 is located at the rear side of the second fan 72 .

[0238] The first sub-opening 204 corresponds to the first fan 30, and the second sub-opening 205 corresponds to the first motor 32. Taking the plane where the first plate 111 is located as the first reference plane, the orthographic projections of the first sub-opening 204 and the second sub-opening 205 on the first reference plane are respectively located on both sides of the orthographic projection of the third shell 71 on the first reference plane. In this way, while ensuring the compact structure of the first shell 1, the exhaust airflow and the heat exchange airflow are separated as much as possible in the paths of the first cavity 201.

[0239] In some embodiments, the indoor unit 301 further includes a damper located at the second opening 712 , and the damper is configured to open or close the second opening 712 .

[0240] For example, when the second fan 72 is working, the damper opens the second opening 712 , and when the second fan 72 stops working, the damper closes the second opening 712 .

[0241] If the air valve seal is not good, outdoor air (such as dirty air) will flow into the indoor unit 301. Therefore, referring to Figures 21 and 23, in some embodiments of the present disclosure, the air valve adopts a check valve 73. The check valve 73 automatically opens when the exhaust air flow blows, and automatically closes when there is no exhaust air flow in the exhaust duct, thereby preventing the backflow of dirty air.

[0242] 23 , in some embodiments, the check valve 73 includes a valve body 731. The check valve 73 also includes a blade 732. The blade 732 is movably disposed within the valve body 731. The blade 732 has a first preset position (e.g., a closed position) and a second preset position (e.g., an open position). In the closed position, the blade 732 closes the valve body 731. In the open position, the blade 732 opens the valve body 731.

[0243] In some embodiments, when the second fan 72 is working, the exhaust airflow can blow the blades 732 to the open position; the blades 732 are tilted in the vertical direction, and when there is no exhaust airflow, the blades 732 can be in the closed position under the action of gravity.

[0244] 21 and 23 , the check valve 73 further includes a spring 733 connected to the blade 732. The spring 733 applies an elastic force toward the closed position to the blade 732. The elastic force of the spring 733 maintains the blade 732 in the closed position, thereby enhancing the sealing performance of the blade 732 in the closed position.

[0245] In some embodiments, referring to FIG. 21 , the check valve 73 is connected to the outside of the third shell 71 corresponding to the second opening 712 .

[0246] In some embodiments, referring to FIG. 23 , the valve body 731 further includes a connecting portion 7311 (cylindrical portion). The valve body 731 further includes a fixing portion 7312 (square disc portion). The connecting portion 7311 is connected to the fixing portion 7312, which is connected to the third housing 71 via fasteners such as screws.

[0247] In some embodiments, referring to FIG. 23 , the check valve 73 further includes a stopper 7313 disposed within the connecting portion 7311. The stopper 7313 includes a first sub-stopper 7314 (annular plate), which is annular and connected to the inner wall of the connecting portion 7311. The stopper 7313 also includes a second sub-stopper 7315 (a partition rib), which is vertically connected to the first sub-stopper 7314. The first and second sub-stoppers 7314, 7315, form two communication ports.

[0248] The blades 732 are semicircular in shape, and are respectively provided at the two communication openings. The blades 732 are configured to open or close the corresponding communication openings.

[0249] The chord end of the blade 732 is rotatably connected relative to the second sub-stop portion 7315, and the blade 732 is connected to the air outlet side of the stop portion 7313. Here, the blade includes an arc portion and a chord end, and the chord end connects the two radial ends of the arc portion.

[0250] In some embodiments, referring to Figure 21, the stop portion 7313 is inclined from top to bottom toward the air outlet side. When there is no exhaust airflow, the blade 732 is in a closed position under the action of gravity. In the closed position, the blade 732 is against the stop portion 7313 to close the connecting port; when there is exhaust airflow, the blade 732 is impacted by the exhaust airflow and rotates in a direction away from the stop portion 7313 to open the connecting port.

[0251] In some embodiments, the spring 733 is a torsion spring. Both ends of the spring 733 have matching portions 7331 (eg, active portions) extending outward along a tangent line, and the two matching portions are 180 degrees apart.

[0252] The second sub-stop portion 7315 is connected to a connecting rod 734, and a spring 733 is sleeved on the outside of the connecting rod 734. The two matching portions 7331 are respectively in contact with the two blades 732. Under the elastic force of the spring 733, the blades 732 can be pressed against the stop portion 7313. In this way, when there is no exhaust airflow in the exhaust channel, the blades 732 will close the connecting port to prevent the dirty air from flowing back into the third chamber 711.

[0253] It should be noted that any one of the technical solutions disclosed in the present disclosure can, to a certain extent, solve one or more of the above-mentioned technical problems and achieve certain disclosure purposes; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above-mentioned technical problems and achieve certain disclosure purposes; some of the technical disclosures can also be selected to be combined into an overall solution, while adopting related technologies and inferior solutions, but the inferior trend can be compensated by the means disclosed in this technology, and the above-mentioned one or more technical problems can be solved to a certain extent as a whole and certain disclosure purposes can be achieved; each technical disclosure combined into a complete technical solution constitutes an organic and inseparable overall solution, which solves technical problems as a whole and achieves certain disclosure purposes.

[0254] Any technical disclosure in this disclosure, as well as the recombination of multiple technical disclosures, can form a complete technical solution and can solve one or more of the above-mentioned technical problems and achieve the purpose of disclosure. They all belong to the content of this disclosure and are the content that is directly and unambiguously determined based on the content of this disclosure.

[0255] Those skilled in the art will understand that the scope of the present disclosure is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited by the appended claims.

Claims

1. An air conditioner, comprising: Outdoor unit; as well as an indoor unit connected to the outdoor unit, and comprising: The first shell includes a first cavity, a second cavity, and a third cavity, wherein the first cavity is connected to the second cavity and the third cavity respectively, the second cavity is connected to the indoor space, and the third cavity is connected to the outdoor space; a heat exchanger disposed in the second chamber and configured to exchange heat with the air in the second chamber; a first fan assembly disposed in the first cavity and configured to blow air in the first cavity toward the second cavity; and a second fan assembly disposed in the third cavity and configured to blow the air in the third cavity toward the outdoor space; Wherein, when the first fan assembly and the second fan assembly are in working state at the same time, the first part of the air in the first chamber is blown to the second chamber, and the second part of the air in the first chamber is blown to the third chamber; When the first fan assembly is in a stopped state and the second fan assembly is in a working state, the air in the first chamber is blown toward the third chamber; When the first fan assembly is in an operating state and the second fan assembly is in a stopped state, the air in the first chamber is blown toward the second chamber.

2. The air conditioner according to claim 1, wherein The first shell includes a first plate and a first opening; the first plate is provided with the first opening, and the first cavity and the third cavity are connected through the first opening; The first opening includes a first sub-opening; The first fan assembly includes a second housing and a first fan, wherein the first fan is located in the second housing; The plane where the first plate is located is taken as a first reference plane, and the orthographic projection of the first sub-opening on the first reference plane is located within the orthographic projection of the second shell on the first reference plane.

3. The air conditioner according to claim 1 or 2, wherein: The second fan assembly includes a third housing and a second fan, wherein the second fan is located in the third housing; The first opening further includes a second sub-opening, and along the axial direction of the second fan, the first sub-opening and the second sub-opening are spaced apart on the first plate; The orthographic projection of the second shell on the first reference plane partially overlaps with the orthographic projection of the third shell on the first reference plane.

4. The air conditioner according to claim 3, wherein: At least one of the first fan and the second fan is a centrifugal fan; An orthographic projection of the second sub-opening on the first reference plane at least partially overlaps with an orthographic projection of the third shell on the first reference plane.

5. The air conditioner according to any one of claims 2 to 4, wherein: The axes of the first fan assembly and the second fan assembly are parallel, The first fan assembly further includes a first air outlet, the first air outlet being in communication with the second cavity; The second fan assembly further includes a second air outlet, the second air outlet being in communication with the outdoor space; The air outlet directions of the first air outlet and the second air outlet are opposite.

6. The air conditioner according to any one of claims 3 to 5, wherein: The first fan assembly further includes a first motor, which is connected to the first fan to drive the first fan to rotate; The second fan assembly further includes a second motor, which is connected to the second fan of the second fan assembly to drive the second fan to rotate.

7. The air conditioner according to claim 6, wherein In the axial direction of the first fan, the two ends of the first fan are respectively the first end of the first fan and the second end of the first fan, and the two ends of the second fan are respectively the first end of the second fan and the second end of the second fan; The first ends of the second fans are located on the same side; The first motor is connected to a first end of the first fan, and the second motor is connected to a second end of the second fan.

8. The air conditioner according to any one of claims 1 to 7, wherein: The first shell further includes: a first sub-case and a second plate, the second plate being configured to separate a space within the first sub-case into the first cavity and the second cavity; and a second sub-shell, the second sub-shell being located on one side of the first sub-shell, the third cavity being formed in the second sub-shell; the second sub-shell comprising a second opening, the second opening being in communication with the third cavity; Wherein, the second fan of the second fan assembly is arranged in the second sub-shell.

9. The air conditioner according to claim 8, wherein Taking the plane where the second plate is located as the second reference plane, the orthographic projection of the second sub-shell on the second reference plane is located within the orthographic projection of the first sub-shell on the second reference plane.

10. The air conditioner according to any one of claims 1 to 9, wherein: The second cavity and the third cavity are respectively located at two opposite ends of the first cavity.

11. The air conditioner according to any one of claims 1 to 10, wherein: The first housing further includes a third sub-housing, the third sub-housing being located at the bottom of the first housing, the third sub-housing including an air outlet frame, the air outlet frame being configured to discharge a first portion of air in the first cavity; The air conditioner further comprises a water receiving pan, which is provided below the heat exchanger and is configured to collect condensation on the heat exchanger; Wherein, the water receiving tray comprises: a first section configured to support the heat exchanger; a second section, wherein a first end of the second section is connected to the first section, a height of the second end of the second section is higher than a height of the first end of the second section in a height direction of the indoor unit, and an inner wall surface of the second section is in a concave arc shape; and The third section has a first end connected to the second end of the second section, a second end connected to the air outlet frame, and an inner wall surface of the third section presents an upward convex arc shape.

12. The air conditioner according to claim 11, wherein The curvature C of the inner wall surface of the second section satisfies the relationship: C≥0.

002.

13. The air conditioner according to claim 11 or 12, wherein: The curvature C of the inner wall surface of the second section satisfies the relationship: C≤0.

014.

14. The air conditioner according to claims 11 to 13, wherein: The air outlet frame includes an air supply portion configured to allow air in the second cavity to flow out; in the height direction of the indoor unit, the air supply portion is inclined from top to bottom in a direction away from the water receiving tray.

15. The air conditioner according to claim 14, wherein The air supply portion includes a first guide surface and a second guide surface that are oppositely disposed, wherein the first guide surface is closer to the water receiving tray than the second guide surface; The first guide surface is connected to the second end of the third segment.

16. The air conditioner according to claim 15, wherein In the height direction of the indoor unit, the heat exchanger is tilted, and the end of the heat exchanger away from the third subshell is tilted toward the direction of the heat exchanger away from the first fan assembly. The tilt angle of the heat exchanger to the horizontal direction of the indoor unit is α; the tilt angle of the air supply part to the height direction of the indoor unit is β; α and β satisfy the relationship: |α-β|≤20°.

17. The air conditioner according to claim 15 or 16, wherein: The air supply portion further includes a third opening, the third opening being in communication with the second cavity, and the third opening being configured to allow air in the second cavity to flow out; The first guide surface and the second guide surface satisfy at least one of the following: At least a portion of the first guide surface close to the third opening is in an arc shape, or At least a portion of the second guide surface close to the third opening is arc-shaped.

18. The air conditioner according to any one of claims 11 to 17, wherein: The first section includes a support portion, the support portion protrudes toward the heat exchanger, and the heat exchanger abuts against the support portion.

19. The air conditioner according to claim 18, wherein Along the thickness direction of the heat exchanger, the width of the support portion is smaller than the thickness of the heat exchanger.

20. The air conditioner according to any one of claims 11 to 19, wherein: The third sub-housing further includes an air inlet frame; the air inlet frame includes an air inlet portion, and the air inlet portion is configured to allow air from the indoor space to enter the first cavity; The air outlet frame includes an air supply portion, and at least a portion of the heat exchanger is located above the air supply portion.

21. The air conditioner according to any one of claims 17 to 20, wherein: The air supply portion further includes a third opening, and at least a portion of the second guide surface close to the third opening is a plane; The air conditioner further includes an air guide plate rotatably connected to the third sub-shell, and the air guide plate is configured to open or close the third opening.

22. The air conditioner according to claim 21: When the air guide plate is in an open state, one end of the air guide plate is located in the air supply portion, and a gap exists between the one end of the air guide plate and the air supply portion.

23. The air conditioner according to claim 21 or 22, wherein: The air conditioner further includes a swing blade, a first end of the swing blade being connected to the air guide plate, a second end of the swing blade being connected to the third sub-housing, and the swing blade being configured to swing in the air supply portion along a width direction of the indoor unit; When the air guide plate opens the third opening, the end of the air guide plate away from the first cavity rotates downward.

24. The air conditioner according to any one of claims 21 to 23, wherein: The bottom surface of the air guide plate is covered with a heat-insulating layer.

25. The air conditioner according to any one of claims 20 to 24, wherein: The air outlet frame further includes a first extension portion; the water receiving tray is connected to the top end of the first extension portion; The side of the water receiving pan close to the heat exchanger and the side of the first extension close to the heat exchanger are connected via the third section of the water receiving pan; A side surface of the water receiving pan close to the heat exchanger is connected to an inner surface of the first extension portion.

26. The air conditioner according to any one of claims 20 to 25, wherein: The first shell further includes a second plate, and the second plate is located on a side wall of the air inlet frame close to the air outlet frame.

27. The air conditioner according to claim 26, further comprising: A sound insulation member is connected to the second plate, and is disposed in the first cavity and located on a side surface of the first fan assembly close to the third sub-shell.

28. The air conditioner according to any one of claims 20 to 27, wherein: Taking the bottom surface of the third sub-shell as a third reference surface, the orthographic projection of the air supply portion on the third reference surface is located within the orthographic projection of the heat exchanger on the third reference surface.

29. The air conditioner according to any one of claims 20 to 28, wherein: The third sub-shell further includes a fourth cavity, the fourth cavity is located between the air inlet portion and the air supply portion, and the bottom of the water receiving tray is located in the fourth cavity.

30. The air conditioner according to claim 29, wherein The third sub-shell further includes: a third plate; the air inlet frame and the air outlet frame are respectively connected to one end of the third plate close to the third sub-shell; and the fourth cavity is defined between the air inlet frame and the air outlet frame.

31. The air conditioner according to claim 30, wherein The air inlet frame includes a second extension portion, and the second extension portion is located between the fourth cavity and the air inlet portion; The first shell further includes a second plate connected to a top end of the second extension portion.

32. The air conditioner according to any one of claims 1 to 31, wherein: The water receiving tray includes a third extension portion, and the third extension portion is connected to the bottom of the first shell via a fastener.

33. The air conditioner according to any one of claims 1 to 32, wherein: The first fan assembly includes: a second shell and a first air outlet, wherein a side of the second shell close to the heat exchanger defines the first air outlet; Along the direction from the first air outlet toward the heat exchanger, an extension line of the side wall of the second shell at the position where the first air outlet is formed is located on the windward side of the heat exchanger, and an area where the extension line of the side wall of the first air outlet intersects the windward side of the heat exchanger is a facing area; The length from any point in the facing area to the top of the heat exchanger is L1, and the length from the top of the heat exchanger to the bottom of the heat exchanger is L. L1 and L satisfy the relationship: 1 / 4≤L1 / L≤2 / 3.

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