Air conditioner

Abstract

Provided is an air conditioner (1000). The air conditioner (1000) comprises an outdoor unit (200) and an indoor unit (100), and the outdoor unit (200) is connected to the indoor unit (100). The indoor unit (100) comprises a housing (1), a heat exchanger (2), and a volute (31). The volute (31) comprises a first body (351), at least one first plate (313), a second air inlet (311), a second air outlet (312), a fan (3), a first flow guide structure (101), and a second flow guide structure (102). The at least one first plate (313) is connected to the first body (351). The second air inlet (311) is located on the first plate (313) and is communicated with a first cavity (11). The fan (3) comprises a wind wheel (32). The first flow guide structure (101) is provided on the surface of the first plate (313) close to the wind wheel (32), and the first flow guide structure (101) surrounds the second air inlet (311). The second flow guide structure (102) is provided on the surface of the first plate (313) close to the wind wheel (32), and the second flow guide structure (102) surrounds the second air inlet (311).

Description

air conditioner

[0001] This application claims priority to Chinese patent application No. 202420642350.7, filed on March 29, 2024; priority to Chinese patent application No. 202420554810.0, filed on March 21, 2024; priority to Chinese patent application No. 202420364867.4, filed on February 27, 2024; priority to Chinese patent application No. 202420648961.2, filed on March 29, 2024; and priority to Chinese patent application No. 202420649066.2, filed on March 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

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

[0003] With the increasing popularity of air conditioning, more and more users are choosing to install central air conditioning in their homes. Ducted air conditioners, as a type of central air conditioner, are highly favored by users for their low cost, simple structure, and concealed installation. Typically installed in a suspended ceiling, ducted air conditioners consist of a housing, a fan, and a heat exchanger located within the housing. The housing includes an air inlet and an air outlet. The fan draws air into the housing through the inlet, and after heat exchange in the heat exchanger, it is delivered through the outlet.

[0004] Summary of the Invention

[0005] In one aspect, an air conditioner is provided. The air conditioner includes an outdoor unit and an indoor unit, the outdoor unit being connected to the outdoor unit. The indoor unit includes a casing, a heat exchanger, and a volute. The casing includes a first chamber and a second chamber, the first and second chambers being arranged along the width of the casing. The casing includes a first air inlet and a first air outlet, the first air inlet being connected to the first chamber, and the first air outlet being connected to the second chamber. The heat exchanger is disposed within the second chamber and is configured to exchange heat with air entering the second chamber. The volute is disposed within the first chamber. The volute includes a first body, at least one first plate, a second air inlet, a second air outlet, a fan, a first guide structure, and a second guide structure. The at least one first plate is connected to the first body. The second air inlet is located on the first plate and is connected to the first chamber. The second air outlet is located on the first body and is connected to the second air inlet, and the second air outlet is connected to the second chamber. The fan includes a rotor, which is arranged in the first body. The rotor rotates to drive air from the first air inlet through the volute into the second cavity, and then flows out from the first air outlet after heat exchange in the heat exchanger. The first guide structure is arranged on the surface of the first plate close to the rotor, and the first guide structure surrounds the second air inlet. The first guide structure includes a plurality of first guide ribs, and the plurality of first guide ribs are arranged at intervals along the surrounding direction of the first guide structure. The second guide structure is arranged on the surface of the first plate close to the rotor, and the second guide structure surrounds the second air inlet and is closer to the second air inlet than the first guide structure. The second guide structure includes a plurality of second guide ribs, and the plurality of second guide ribs are arranged at intervals along the surrounding direction of the second guide structure. The plurality of first guide ribs and the plurality of second guide ribs are staggered.

[0006] In another aspect, 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 casing, a heat exchanger, and a volute. The casing includes a first chamber and a second chamber, the first and second chambers being arranged along the width of the casing; a first air inlet and a first air outlet, the first air inlet communicating with the first chamber, and the first air outlet communicating with the second chamber. The heat exchanger is disposed within the second chamber and is configured to exchange heat with air entering the second chamber. The volute is disposed within the first chamber. The volute includes a first body, at least one first plate, a second plate, a passage, a wind wheel, and at least one third flow guide structure. The at least one first plate is connected to the first body; the at least one first plate includes two first plates, one located at each end of the first body. The second plate is located between the two first plates, and the second plate, the two first plates, and the first body collectively define the second air outlet. The second air outlet communicates with the second air inlet to form the passage. The impeller is disposed within the passage. The impeller rotates to drive air from the first air inlet through the volute into the second chamber, and then out of the first air outlet after heat exchange in the heat exchanger. The at least one third flow-guiding structure is disposed on a surface of the first plate near the impeller. The third flow-guiding structure at least partially surrounds the second air inlet and is spaced apart from the sidewalls of the second air inlet. Both ends of one of the at least one third flow-guiding structure extend to the second air outlet, and the first end of the third flow-guiding structure is spaced apart from the second end of the third flow-guiding structure.

[0007] In another aspect, an air conditioner is provided. The air conditioner includes an outdoor unit and an indoor unit, the outdoor unit being connected to the outdoor unit. The indoor unit includes a casing, a heat exchanger, and a volute. The casing includes a first chamber and a second chamber, the first and second chambers being arranged along the width of the casing. The casing includes a first air inlet and a first air outlet, the first air inlet communicating with the first chamber, and the first air outlet communicating with the second chamber. The heat exchanger is disposed within the second chamber and is configured to exchange heat with air entering the second chamber. The volute is disposed within the first chamber and includes a first body, at least one first plate, a second plate, a second air inlet, a second air outlet, a channel, a rotor, a first guide structure, a second guide structure, and at least one third guide structure. The at least one first plate is connected to the first body; the at least one first plate includes two first plates, one located at each end of the first body. The second plate is located between the two first plates, and the second plate, the two first plates, and the first body collectively define the second air outlet. The second air inlet is located on the first plate and communicates with the first cavity. The second air outlet is located on the first body and communicates with the second air outlet, which in turn communicates with the second cavity. The second air outlet and the second air inlet in the passage are connected to form the passage. The impeller is located in the first body. The impeller rotates to drive air from the first air inlet through the volute into the second cavity, where it then flows out of the first air outlet after heat exchange in the heat exchanger. The first guide structure is located on the surface of the first plate near the impeller. The first guide structure surrounds the second air inlet and includes a plurality of first guide ribs spaced apart along the direction of the first guide structure's circumference. The second guide structure surrounds the second air inlet and is closer to the second air inlet than the first guide structure. The second guide structure includes a plurality of second guide ribs spaced apart along the direction of the second guide structure's circumference, with the first guide ribs and the second guide ribs being staggered. The at least one third guide structure is arranged on the surface of the first plate close to the wind wheel, at least part of the third guide structure surrounds the second air inlet, and a gap is set between the third guide structure and the side wall of the second air inlet, and the two ends of one of the at least one third guide structure extend to the second air outlet respectively, and the first end of the third guide structure is spaced apart from the second end of the third guide structure.

[0008] In yet another aspect, 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 casing, a heat exchanger, a fan, an electrical control box, a display assembly, a first connecting cable, and a first mounting portion. The casing includes a first air inlet and a first air outlet, the first air inlet and the first air outlet being arranged along the width of the casing. The heat exchanger is disposed within the casing and configured to exchange heat with air entering the casing. The fan is disposed within the casing to draw air into the casing through the first air inlet, where it is heat-exchanged by the heat exchanger and then discharged through the first air outlet as conditioned air. The electrical control box is located at one end of the casing along its length and includes a first controller. The display assembly is mounted on one side of the casing corresponding to the electrical control box and includes a second controller and a display unit. The second controller is provided with the display unit, which displays at least information about the operating status of the air conditioner. The first connecting cable connects the first and second controllers. The first mounting portion is located at the top of the display assembly, and the first mounting portion is configured to mount the first connecting line.

[0009] In some embodiments, the display assembly is detachably connected to the housing.

[0010] In some embodiments, the second controller is disposed near the first mounting portion. The second controller includes a wiring terminal located at a top end of the second controller, and the first end of the first connecting wire is connected to the wiring terminal through the first mounting portion.

[0011] In some embodiments, the connection terminal includes a first terminal and a second terminal, the first connection line includes a power line and a transmission line, the first terminal is connected to the power line, and the second terminal is connected to the transmission line.

[0012] In some embodiments, the air conditioner further includes a microphone, which is installed in the display assembly. The microphone is located on a side of the second controller away from the first installation portion, and is coupled to the connection terminal.

[0013] In some embodiments, the display assembly includes a sound pickup hole, which is located on a side of the display assembly away from the housing, and the sound pickup hole is arranged corresponding to the microphone.

[0014] In some embodiments, the air conditioner further includes a speaker and a second connecting wire, wherein the speaker is installed below the housing, and the speaker is coupled to the connection terminal via the second connecting wire.

[0015] In some embodiments, the air conditioner further includes a second mounting portion, the second mounting portion is located at the top of the display assembly, and the second mounting portion is configured to install the second connecting line.

[0016] In some embodiments, the electric control box includes a third body and a guide portion, the guide portion is provided on a side of the third body away from the display assembly, and the second end of the first connecting line is coupled to the first controller through the guide portion.

[0017] In some embodiments, the indoor unit includes a wire harness assembly, which is located on the top surface and the side surface of the electric control box, and the wire harness assembly is configured to clamp the first connecting wire.

[0018] In some embodiments, the wiring harness assembly includes a fixing portion, and a side of the fixing portion close to the housing has an opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1A is a schematic diagram of an air conditioner according to some embodiments;

[0020] FIG1B is a structural diagram of an indoor unit according to some embodiments;

[0021] FIG2 is another structural diagram of an indoor unit according to some embodiments;

[0022] FIG3 is another structural diagram of an indoor unit according to some embodiments;

[0023] FIG4 is a structural diagram of an indoor unit without a second plate according to some embodiments;

[0024] FIG5 is a rear view of an indoor unit according to some embodiments;

[0025] FIG6 is a cross-sectional view taken along line AA in FIG5;

[0026] FIG7 is a structural diagram of a first fan according to some embodiments;

[0027] FIG8 is another structural diagram of a first fan according to some embodiments;

[0028] FIG9 is a structural diagram of a volute according to some embodiments;

[0029] FIG10 is another structural diagram of a volute according to some embodiments;

[0030] Figure 11 is a cross-sectional view along line BB in Figure 10;

[0031] FIG12 is a structural diagram of a volute without a first plate according to some embodiments;

[0032] FIG13 is another structural diagram of a first fan according to some embodiments;

[0033] FIG14 is a cross-sectional view taken along line CC in FIG13;

[0034] FIG15 is a partial structural diagram of FIG14;

[0035] FIG16 is a cross-sectional view of a first fan according to some embodiments;

[0036] FIG17 is another cross-sectional view of a first fan according to some embodiments;

[0037] FIG18 is a cross-sectional view of a volute according to some embodiments;

[0038] FIG19 is another cross-sectional view of a first fan according to some embodiments;

[0039] FIG20 is a cross-sectional view of FIG19 after removing a wind wheel;

[0040] FIG21 is a structural diagram of another first fan according to some embodiments;

[0041] FIG22 is a structural diagram of another volute according to some embodiments;

[0042] FIG23 is another structural diagram of another volute according to some embodiments;

[0043] FIG24 is a cross-sectional view taken along line DD in FIG23;

[0044] FIG25 is another structural diagram of another first fan according to some embodiments;

[0045] FIG26 is a cross-sectional view taken along line EE in FIG25;

[0046] FIG27 is another structural diagram of another first fan according to some embodiments;

[0047] FIG28 is a schematic diagram of another volute profile according to some embodiments;

[0048] FIG29 is another structural diagram of another first fan according to some embodiments;

[0049] FIG30 is a cross-sectional view of another first fan according to some embodiments;

[0050] FIG31 is a cross-sectional view of FIG30 after removing another wind wheel;

[0051] FIG32 is a cross-sectional view of another volute according to some embodiments;

[0052] FIG33 is another cross-sectional view of another volute according to some embodiments;

[0053] FIG34 is a structural diagram of another indoor unit according to some embodiments;

[0054] FIG35 is a structural diagram of a suspended ceiling according to some embodiments;

[0055] FIG36 is a structural diagram of a housing according to some embodiments;

[0056] FIG37 is another structural diagram of a housing according to some embodiments;

[0057] FIG38 is a front view of a housing according to some embodiments;

[0058] FIG39 is a cross-sectional view taken along line FF in FIG38;

[0059] FIG40 is a schematic diagram of another indoor unit according to some embodiments;

[0060] FIG41 is another schematic diagram of another indoor unit according to some embodiments;

[0061] FIG42 is yet another schematic diagram of another indoor unit according to some embodiments;

[0062] FIG43 is a cross-sectional view of another indoor unit according to some embodiments;

[0063] FIG44 is a structural diagram of another indoor unit and a suspended ceiling according to some embodiments;

[0064] FIG45 is a partial enlarged view of the area circled A in FIG44 ;

[0065] FIG46 is a partial enlarged view of the area circled B in FIG44 ;

[0066] FIG47 is a block diagram of a display assembly according to some embodiments;

[0067] FIG48 is another block diagram of a display assembly according to some embodiments;

[0068] FIG49 is an exploded view of a display assembly according to some embodiments;

[0069] FIG50 is another exploded view of a display assembly according to some embodiments;

[0070] FIG51 is a structural diagram of a cover according to some embodiments;

[0071] FIG52 is another exploded view of a display assembly according to some embodiments;

[0072] FIG53 is a bottom view of another indoor unit according to some embodiments;

[0073] FIG54 is another structural diagram of another indoor unit according to some embodiments;

[0074] FIG55 is a structural diagram of another indoor unit according to some embodiments;

[0075] FIG56 is a partial enlarged view of the area circled C in FIG55;

[0076] FIG57 is a partial structural diagram of another indoor unit according to some embodiments;

[0077] FIG58 is a structural diagram of a fourth mounting portion according to some embodiments;

[0078] FIG59 is a schematic diagram of wiring of an electric control box, a display assembly, and a speaker according to some embodiments;

[0079] FIG60 is a partial view of a fifth plate and a cover according to some embodiments;

[0080] FIG61 is another structural diagram of an indoor unit according to some embodiments;

[0081] FIG62 is a partial enlarged view of circle D in FIG61;

[0082] FIG63 is a partial structural diagram of another indoor unit according to some embodiments;

[0083] FIG64 is another structural diagram of a fourth mounting portion according to some embodiments;

[0084] FIG65 is a partial structural diagram of an electric control box according to some embodiments;

[0085] FIG66 is a schematic diagram of wiring of an electric control box, a display assembly, and a speaker according to some embodiments;

[0086] FIG67 is a structural diagram of a speaker according to some embodiments;

[0087] FIG68 is a structural diagram of the speaker in FIG67 from another perspective. DETAILED DESCRIPTION

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] “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.

[0093] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0094] 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.

[0095] 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).

[0096] 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 a 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. In some embodiments, referring to Figure 1A, the air conditioner 1000 includes an indoor unit 100.

[0097] The air conditioner 1000 further includes an outdoor unit 200. The indoor unit 100 and the outdoor unit 200 are connected by a pipeline to transmit refrigerant.

[0098] In some embodiments, the air conditioner 1000 further includes an expansion valve 224. The expansion valve 224 expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The expansion valve 224 may be located in the indoor unit 100 or the outdoor unit 200.

[0099] In some embodiments, the air conditioner 1000 further includes an evaporator. The evaporator evaporates the refrigerant expanded in the expansion valve 224 and returns the low-temperature, low-pressure refrigerant gas to the compressor 221. The evaporator achieves a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. Throughout this cycle, the compressor 221 regulates the temperature of the indoor space.

[0100] In some embodiments, the indoor unit 100 includes a first heat exchanger 2 (heat exchanger), which is an indoor heat exchanger, and the outdoor unit 200 includes a second heat exchanger 222, which is an outdoor heat exchanger.

[0101] In some embodiments, the outdoor unit 200 further includes a four-way valve 225 located between the first heat exchanger 2 and the second heat exchanger 222 . The four-way valve 225 is configured to switch the first heat exchanger 2 and the second heat exchanger 222 as a condenser or an evaporator.

[0102] In some embodiments, the indoor unit 100 includes a first fan 3 (eg, an indoor fan) disposed in the first cavity 11 .

[0103] In some embodiments, the outdoor unit 200 includes a second fan 226 (such as an outdoor fan). The rotation of the outdoor fan causes the outdoor air to enter the outdoor accommodation space from the outdoor air inlet and exchange heat with the second heat exchanger 222. The outdoor air after heat exchange flows out of the outdoor accommodation space from the outdoor air outlet.

[0104] For example, the refrigeration working principle of the air conditioner 1000 includes: the compressor 221 works to put the first heat exchanger 2 (in the indoor unit 100, it is the evaporator at this time) in an ultra-low pressure state, the liquid refrigerant in the first heat exchanger 2 evaporates and absorbs heat, the wind blown out by the first fan 3 (such as the indoor fan) is cooled by the first heat exchanger coil and becomes cold air blown into the room, the evaporated refrigerant is pressurized by the compressor 221, and condensed into liquid under the high-pressure environment of the second heat exchanger 222 (in the outdoor unit 200, it is the condenser at this time), releasing heat, and dissipating the heat into the atmosphere through the second fan 226 (such as the outdoor fan), and this cycle can achieve cooling.

[0105] For example, the heating principle of air conditioner 1000 is as follows: the gaseous refrigerant is pressurized by compressor 221, becoming a high-temperature, high-pressure gas. It then enters first heat exchanger 2 (the condenser), where it condenses and liquefies, releasing heat and becoming a liquid. This heats the indoor air, thereby increasing the indoor temperature. The liquid refrigerant is then decompressed by the throttling device and enters second heat exchanger 222 (the evaporator). It evaporates and absorbs heat, becoming a gas. This gas absorbs heat from the outdoor air (making the outdoor air even cooler), and then enters compressor 221 again to begin the next cycle, thus achieving heating.

[0106] It should be noted that the indoor unit 100 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, and the like.

[0107] In addition, the central air-conditioning ducted indoor unit (ducted unit for short) belongs to the air conditioner, and the air conditioner includes the ducted unit (i.e. the indoor unit of the air conditioner) and the air conditioner outdoor unit (i.e. the outdoor unit of the air conditioner).

[0108] In some embodiments, the indoor unit 100 is installed in an indoor space, and the indoor unit 100 provides processed cold airflow or warm airflow to the indoor space to adjust the temperature or humidity of the indoor space.

[0109] In some embodiments, referring to Figures 1B and 4 , the first fan 3 includes a volute 31. Referring to Figure 6 , the volute 31 includes a second air inlet 311 configured to take air into the volute 31.

[0110] 9 , the volute 31 further includes a second air outlet 312, which is configured to discharge air to the outside of the volute 31. The second air inlet 311 and the second air outlet 312 are in communication.

[0111] In some embodiments, referring to FIG. 4 , the first fan 3 includes a wind wheel 32 , and the rotation of the wind wheel 32 drives the airflow to move inside the volute 31 along the volute profile.

[0112] When the air flow enters the volute 31 through the second air inlet 311, the rotation of the wind wheel 32 drives the air flow to move inside the volute 31 along the volute profile. The air flow in the area on both sides of the volute 31 will pass through the axial gap between the volute 31 and the wind wheel 32 and leak out through the second air inlet 311, thus causing the first fan 3 to experience surge problems.

[0113] The surge of the first fan 3 is manifested as periodic intake and exhaust, and the first fan has periodic fluctuations and abnormal noises, which may cause damage to the wind wheel 32 and the motor in severe cases, thereby causing the entire machine to be unable to operate.

[0114] Moreover, in the related art, the second air outlet 312 of the volute 31 usually adopts a diffuser structure. In this way, there will be a low flow velocity area at the second air outlet 312 of the volute 31. As the wind speed in the volute 31 increases, the low flow velocity area will gradually develop into a vortex, generating abnormal sound, which will not only increase the noise of the entire machine, but also affect the heat exchange effect of the first heat exchanger 2 (indoor heat exchanger).

[0115] It can be understood that the axial gap refers to the gap between the volute 31 and the wind wheel 32 in the axial direction of the wind wheel 32 .

[0116] To solve the above problems, some embodiments of the present disclosure provide an air conditioner 1000, which provides at least one of a first guide structure or a second guide structure, wherein the first guide structure includes a plurality of first guide ribs, and the second guide structure includes a plurality of second guide ribs, and the plurality of first guide ribs and the plurality of second guide ribs are staggered with each other, so that the airflow flowing out of the gap between two adjacent first guide ribs can be blocked by the second guide ribs, thereby enhancing the blocking effect of the airflow, reducing the leakage of the airflow to the outside of the volute, improving the fan surge, and thus helping to improve the heat exchange effect.

[0117] 1B and 2 , the indoor unit 100 includes a casing 1. The casing 1 forms an outer shell of the indoor unit 100.

[0118] The housing 1 includes a third cavity (accommodation cavity) configured to accommodate and secure various components of the indoor unit 100, thereby preventing foreign objects from colliding with the various components within the housing 1, thereby improving the reliability of the indoor unit 100 during transportation or installation.

[0119] 1B , the housing 1 includes a first air inlet 13. The first air inlet 13 is connected to the third cavity and serves as an inlet for external air to flow into the housing 1, allowing indoor air to enter the third cavity through the first air inlet 13.

[0120] 3 , the housing 1 may include a first air outlet 14 . The first air outlet 14 communicates with the third cavity and serves as an outlet for the heat exchange airflow in the housing 1 , allowing the airflow in the third cavity to flow out through the first air outlet 14 .

[0121] For example, the first air inlet 13 may be provided at one end of the housing 1 , and the first air outlet 14 may be provided at the other end of the housing 1 .

[0122] For another example, the housing 1 is substantially in the shape of a rectangular parallelepiped. Referring to FIG1B , the first air inlet 13 and the first air outlet 14 are located at opposite ends of the housing 1 in the width direction of the housing 1 .

[0123] 1B , the housing 1 may include a third plate 15 (top plate) in some embodiments. The third plate 15 forms the top of the housing 1 .

[0124] 2 , the housing 1 may include a fourth plate 16 . The fourth plate 16 forms a bottom end of the housing 1 .

[0125] For example, referring to FIG. 6 , the third plate 15 of the housing 1 and the fourth plate 16 of the housing 1 , the third plate 15 and the fourth plate 16 are two ends of the housing 1 that are oppositely disposed in the vertical direction.

[0126] In some embodiments, referring to Figures 2 and 6, the housing 1 includes two fifth plates 17, which are connected to the left and right sides of the third plate 15 and the fourth plate 16. The two fifth plates 17 form two opposite ends of the housing 1 in the length direction of the housing 1.

[0127] For example, the third cavity may be defined by the third plate 15 , the fourth plate 16 and the two fifth plates 17 .

[0128] In some embodiments, referring to FIG. 6 , the housing 1 includes a first cavity 11 (eg, an air inlet cavity), and the volute 31 is located in the first cavity 11 .

[0129] In some embodiments, the housing 1 further includes a second cavity 12 (eg, a heat exchange cavity), the first heat exchanger 2 is located in the second cavity 12 , and the first heat exchanger 2 is configured to perform heat exchange with air entering the second cavity 12 .

[0130] 4 , in some embodiments, the indoor unit 100 may include a partition 18. The partition 18 extends along the length of the housing 1 and is disposed within the third cavity, such that the housing 1 and the partition 18 together define a first cavity 11 and a second cavity 12 arranged along the width of the housing 1.

[0131] It should be noted that the first cavity 11 is connected to the first air inlet 13 , and the second cavity 12 is connected to the first air outlet 14 .

[0132] For example, the first heat exchanger 2 can be located at a position corresponding to the first air outlet 14, which is conducive to the outflow of the airflow after heat exchange.

[0133] For example, the first heat exchanger 2 can be arranged obliquely in the second cavity 12, which is beneficial to increase the contact area between the air in the second cavity 12 and the first heat exchanger 2, thereby improving the heat exchange effect.

[0134] 6 , the first heat exchanger 2 is tilted toward the first air outlet 14 in the vertical direction of the housing 1. This arrangement increases the heat exchange area of ​​the first heat exchanger 2, improves the heat exchange efficiency of the indoor unit 100, and increases the amount of heat exchanged air.

[0135] In some embodiments, the outdoor unit 200 may include an outdoor housing. The outdoor housing may include an outdoor storage space. The outdoor housing may include an outdoor air inlet. The outdoor air inlet may communicate with the outdoor storage space. The outdoor air inlet may be configured to introduce outdoor air into the outdoor storage space.

[0136] In some embodiments, the outdoor housing may be provided with an outdoor air outlet. The outdoor air outlet may be in communication with the outdoor accommodation space. The outdoor air outlet may be configured to draw air from the outdoor accommodation space to the outside of the outdoor accommodation space.

[0137] The outdoor unit 200 may include a second heat exchanger 222. The second heat exchanger 222 may be provided in the outdoor accommodation space.

[0138] The outdoor unit 200 may include a second fan 226. The second fan 226 may be provided in the outdoor accommodation space.

[0139] The rotation of the second fan 226 allows outdoor air to enter the outdoor accommodation space from the outdoor air inlet and exchange heat with the second heat exchanger 222. The outdoor air after heat exchange flows out of the outdoor accommodation space from the outdoor air outlet.

[0140] In some embodiments, the air conditioner 1000 may include a compressor 221 , which is disposed in the outdoor accommodation space.

[0141] In some embodiments, the air conditioner 1000 may include a throttling device configured to throttle the flow. The throttling device may be provided in the outdoor accommodation space.

[0142] It should be noted that the air conditioner 1000 performs a refrigeration cycle of the air conditioner 1000 by using the compressor 221, the condenser, the throttling device and the 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.

[0143] For example, compressor 221 compresses low-temperature, low-pressure refrigerant gas and discharges it into high-temperature, high-pressure 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.

[0144] For another example, the throttle device expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant.

[0145] For another example, the evaporator evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 221 .

[0146] The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner 1000 can adjust the temperature of the indoor space.

[0147] It should be noted that one of the first heat exchanger 2 and the second heat exchanger 222 is a condenser and the other is an evaporator. When the first heat exchanger 2 is used as a condenser, the air conditioner 1000 functions as a heater in heating mode. When the first heat exchanger 2 is used as an evaporator, the air conditioner functions as a cooler in cooling mode. The first heat exchanger 2 and the second heat exchanger 222 are connected by a pipeline.

[0148] In some embodiments, referring to FIG. 6 , a volute 31 is disposed in the first cavity 11 , and the volute 31 may be connected to the partition 18 .

[0149] 7 to 9 , in some embodiments, the volute 31 includes a second air inlet 311 . The second air inlet 311 is configured to take air into the interior of the volute 31 .

[0150] In some embodiments, the second air outlet 312 is connected to the second air inlet 311 to form a channel, and the second air outlet 312 is configured to supply air to the outside of the volute 31 .

[0151] In some embodiments, the first fan 3 includes a centrifugal fan wheel 32 . The fan wheel 32 is disposed in a channel within the first body 351 . The fan wheel 32 rotates to drive air into the channel from the second air inlet 311 and out through the second air outlet 312 .

[0152] In some embodiments, the first fan 3 may include a motor 33. Referring to Figure 5, the driving motor 33 is connected to the wind wheel 32 to drive the wind wheel 32 to rotate.

[0153] In some embodiments, the volute 31 includes a first body 351 and at least one first plate 313 (end plate), and the first body 351 is connected to the at least one first plate 313 .

[0154] For example, the at least one first plate includes two first plates 313. The two first plates 313 are correspondingly arranged along the length direction of the volute 31, and at least one of the two first plates 313 is provided with a second air inlet 311, which is connected to the first chamber 11.

[0155] It should be noted that the outer contours of the two first plates 313 are consistent. The two first plates 313 are respectively flat plates.

[0156] In some embodiments, referring to Figures 7 and 9, the volute 31 includes a second plate 314. The second plate 314 is located between the two first plates 313. The volute 31 also includes a second air outlet 312. The first body 351, the first plate 313, and the second plate 314 collectively define the second air outlet 312.

[0157] It should be noted that the second plate 314 is in a curved shape, which is conducive to the flow of air in the channel.

[0158] In some embodiments, the outer edge shape of the first plate 313 is adapted to the outer edge shape of the second plate 314 , and the two first plates 313 are respectively installed on both sides of the second plate 314 . The first plate 313 , the second plate 314 and the first body 351 together form the volute 31 .

[0159] It should be noted that the second plate 314 can be disposed between the two first plates 313 along the volute profile.

[0160] In some embodiments, the second air inlet 311 is in communication with the first cavity 11 , and the second air outlet 312 is in communication with the second cavity 12 , so that the passage is in communication with the first cavity 11 and the second cavity 12 .

[0161] For example, the impeller 32 rotates to drive air from the first air inlet 13 through the volute 31 into the second chamber 12 , and then flows out from the first air outlet 14 after heat exchange in the first heat exchanger 2 (such as a heat exchanger).

[0162] In some embodiments, when the first fan 3 is working, the motor 33 drives the wind wheel 32 to rotate, and the rotation of the wind wheel 32 drives air to flow from the first air inlet 13 into the first cavity 11 and then into the channel through the second air inlet 311.

[0163] It is understood that the airflow in the channel flows through the impeller 32, enters the second chamber 12 through the second air outlet 312, and is blown toward the first heat exchanger 2. After heat exchange, the airflow forms a heat exchange airflow, which is then blown into the room through the first air outlet 14, thereby regulating the indoor temperature through this cycle. It should be noted that the heat exchange airflow is hot air or cold air.

[0164] 8 to 10 , the volute 31 includes a first guide structure 101 . The first guide structure 101 is disposed on a surface (such as a side surface) of the first plate 313 close to the wind wheel 32 and surrounds the second air inlet 311 .

[0165] There is a gap between the first guide structure 101 and the edge of the second air inlet 311. In this way, the first guide structure 101 is arranged on the side of the first plate 313 close to the wind wheel 32, which can prevent the airflow in the volute 31 from flowing out through the second air inlet 311; and after the airflow is sucked into the volute 31 through the second air inlet 311, it is also beneficial for the first guide structure 101 to guide the airflow in the volute 31.

[0166] In some embodiments, the rotation of the wind wheel 32 drives the airflow to move in the channel. The airflow near both sides of the volute 31 (such as the side of the two first plates 313 close to the wind wheel 32) is constrained by the first guide structure 101, so that the airflow flows along the direction of the first guide structure 101, and is also beneficial to hinder the airflow from flowing in the axial direction of the wind wheel 32 toward the side of the first guide structure 101 away from the wind wheel 32, thereby reducing the leakage of the airflow to the outside of the volute 31 and improving the surge of the fan.

[0167] In some embodiments, referring to Figures 8 and 9, the indoor unit 100 further includes a second air guide structure 102. The second air guide structure 102 surrounds the second air inlet 311. This helps the second air guide structure 102 prevent air from passing through the axial gap between the first plate 313 and the impeller 32 and leaking out through the second air inlet 311 of the volute 31.

[0168] It should be noted that the second guide structure 102 is closer to the second air inlet 311 than the first guide structure 101. In this way, the second guide structure 102 can block the airflow not blocked by the first guide structure 101, thereby reducing airflow leakage.

[0169] In some embodiments, referring to Figures 8, 9 and 12, the first guide structure 101 includes a plurality of first guide ribs, and there is a gap between two adjacent first guide ribs 4. In this way, when the first fan 3 is working, the airflow in the volute 31 can flow into the side of the first guide rib away from the second air inlet 311 through the gap.

[0170] In some embodiments, referring to FIG. 8 , FIG. 9 and FIG. 12 , the second guide structure 102 includes a plurality of second guide ribs, and a gap exists between two adjacent second guide ribs.

[0171] It should be noted that the plurality of first guide ribs and the plurality of second guide ribs are staggered. For example, the orthographic projections of the plurality of first guide ribs and the plurality of second guide ribs on the first plate 313 are arranged alternately. With the plane of the first plate as a reference plane, the orthographic projection of any first guide rib is located between two adjacent second guide ribs, and the orthographic projection of any second guide rib is located between two adjacent first guide ribs.

[0172] In this way, by staggering the distribution of multiple first guide ribs and multiple second guide ribs, the airflow flowing out of the gap between two adjacent first guide ribs can be blocked by the second guide ribs, thereby enhancing the blocking effect of the airflow, reducing the leakage of the airflow to the outside of the volute 31, improving the fan surge, and improving the efficiency of the wind wheel 32.

[0173] In some embodiments, the first flow guiding structure and the second flow guiding structure may also be provided on different first plates.

[0174] 12 and 14 , in some embodiments, the first fan 3 includes an air guide portion 106 (eg, an air guide ring).

[0175] For example, the volute 31 includes an air guide 106, which is arranged around the second air inlet 311. Referring to Figure 14, the air guide 106 is arranged on the inner side of the first body 351, and the air guide 106 can guide the airflow, so that the airflow flows along the channel along the air guide 106.

[0176] It should be noted that the air guide portion 106 is located at the edge of the second air inlet 311 , and the central axis of the air guide portion 106 may coincide with the central axis of the centrifugal wind wheel 32 .

[0177] In some embodiments, the first guide structures 101 and the second guide structures 102 are alternately distributed, so that the first guide ribs and the second guide ribs are staggered.

[0178] When the first fan 3 is operating, the airflow inside the volute 31 will circulate within the channel. By arranging the first and second guide ribs in a staggered distribution, the first and second guide ribs can form a labyrinthine airflow blocking structure. In this way, since the labyrinthine airflow blocking structure is located in the gap between the wind wheel 32 and the first plate 313, it can not only guide and block the airflow on both sides of the volute 31 near the wind wheel 32. At the same time, because the first guide structure 101 and the second guide structure 102 are discontinuous structures, turbulence will not be formed when the airflow enters between the first and second guide ribs, and the efficiency of the first fan 3 is improved.

[0179] In some embodiments, the center of the first flow-guiding structure 101 coincides with the axis of the wind wheel 32 , which helps the first flow-guiding structure 101 block the leaked airflow.

[0180] In some embodiments, the center of the second air guide structure 102 coincides with the axis of the wind wheel 32 , which helps the second air guide structure 102 block the leaked airflow.

[0181] In some embodiments, referring to Figures 16 and 17, the centers of the first guide structure 101 and the second guide structure 102 overlap with the axis of the wind wheel 32, so that the gaps between each first guide rib, each second guide rib and the second air inlet 311 of the volute 31 are roughly the same.

[0182] It should be noted that the gap between the first guide rib and the adjacent second guide rib is also roughly the same, so that the blocking effect of the first guide structure 101 and the second guide structure 102 on the leaking airflow is relatively uniform, which is conducive to improving the blocking effect on the leaking airflow.

[0183] 16 and 17 , a plurality of first guide ribs are spaced apart along a first circumference 171 , and a plurality of second guide ribs are spaced apart along a second circumference 172 .

[0184] In some embodiments, the plurality of first guide ribs may be evenly spaced apart along the circumferential direction of the first guide structure 101. The plurality of second guide ribs may be evenly spaced apart along the second circumference 172.

[0185] It should be noted that the first circumference 171 and the second circumference 172 may be coaxially arranged.

[0186] In some embodiments, in the radial direction of the wind wheel 32, at least one of the multiple second guide ribs has an overlapping area with two adjacent first guide ribs among the multiple first guide ribs, so that the second guide ribs can effectively block the airflow leaked from the gap between the two adjacent first guide ribs, thereby preventing the airflow leaked from the first guide structure 101 from flowing directly to the second air inlet 311.

[0187] In some embodiments, referring to Figure 14, in the axial direction of the wind wheel 32, the height of the wind guide portion 106 is greater than the height of the first guide rib, and the height of the wind guide portion 106 is greater than the height of the second guide rib. By setting the height of the wind guide portion 106 to be greater than the height of either the first guide rib or the second guide rib, it is helpful to avoid the first guide rib and the second guide rib from interfering with the installation of the wind wheel 32, thereby facilitating the installation of the wind wheel 32.

[0188] In some embodiments, referring to FIG14 , the first and second guide ribs have the same height along the axis of the wind wheel 32. For example, the height of the wind guide portion 106 is H1, the height of the first guide rib is H2, and the height of the second guide rib is H2, and H1 and H2 satisfy the relationship: H1>H2.

[0189] In some embodiments, the height of the air guide portion 106 is the distance between the end of the air guide portion 106 away from the first plate 313 and the outer side surface of the first plate 313 to which it is connected, along the axis of the wind wheel 32. The height of the first guide rib is the distance between the end of the air guide portion 106 away from the first plate 313 and the outer side surface of the first plate 313 to which it is connected, and the height of the second guide rib is the distance between the end of the air guide portion 106 away from the first plate 313 and the outer side surface of the first plate 313 to which it is connected.

[0190] In the above embodiment, the heights of the first guide ribs shown in Figures 13 and 14 are consistent. Similarly, the heights of the second guide ribs are also consistent.

[0191] In some embodiments, referring to Figure 11, the wind wheel 32 includes a second body 352 and a plurality of blades 321, and the plurality of blades 321 are arranged at intervals on the outer periphery of the second body 352. In the radial direction of the wind wheel 32, the outer diameter of the first guide structure 101 is greater than or equal to the outer diameter of any blade 321 among the plurality of blades 321.

[0192] For example, referring to Figures 14, 16 and 17, the outer diameter of the first guide structure 101 is D1, and the outer diameter of any blade 321 among the multiple blades 321 is D2. D1 and D2 satisfy the formula: D1≥D2. In this way, in the axial direction of the wind wheel 32, the first guide structure 101 hinders the airflow in the channel from moving toward the outside of the first guide structure 101, reducing the leakage of the airflow through the second air inlet 311 to the outside of the volute 31, thereby ensuring the blocking effect of the first guide structure 101 on the airflow.

[0193] It is understood that the outer diameter of any blade 321 among the plurality of blades 321 is the diameter of the outer edge of the blade 321 of the wind rotor 32. The outer diameter of the first air guide structure 101 is the size of the first line segment (D1), which is a line segment passing through the center of the wind rotor 32 and having both endpoints at any point on the outer edge of the first air guide structure 101.

[0194] In some embodiments, in the radial direction of the wind wheel 32 , the outer dimension of the second air flow guiding structure 102 is greater than or equal to the inner diameter of any blade 321 among the plurality of blades 321 .

[0195] For example, referring to Figure 17, the outer diameter of the second guide structure 102 is D3, and the inner diameter of any blade 321 among the multiple blades 321 is D4. D3 and D4 satisfy the formula: D3≥D4. In this way, the airflow leaked from the first guide structure 101 is blocked by the second guide structure 102 before reaching the inner edge of any blade 321 among the multiple blades 321, thereby preventing the airflow leaked from the first guide structure 101 from flowing out through the second air inlet 311, which is beneficial to improving the efficiency of the first fan 3.

[0196] It is understood that the inner diameter of any blade 321 among the plurality of blades 321 is the diameter of the inner edge of the blade 321 of the wind rotor 32. The outer diameter of the second air guide structure 102 is the size of the second line segment (D3), which is a line segment passing through the center of the wind rotor 32 and having both endpoints at any point on the outer edge of the second air guide structure 102.

[0197] In some embodiments, referring to Figure 18, the linear distance L between the two adjacent ends of the first guide ribs is greater than or equal to 10 mm. This setting limits the minimum length of the second guide ribs and facilitates the processing and forming of the first and second guide ribs.

[0198] In some embodiments, the linear distance L between the two adjacent first guide ribs is less than D1 / 2n, where n is the number of guide ribs in the outermost circle. For example, the maximum dimension of the linear distance L is consistent with the width of the guide rib.

[0199] In some embodiments, referring to FIG. 15 , in the radial direction of the wind wheel 32 , the thickness of the first guide rib is A1 , and in the axial direction of the wind wheel 32 , the thickness of the first plate 313 is A2 .

[0200] In some embodiments, when A1 / A2≤0.6, the thickness of the first guide rib is small, that is, the first guide rib is thin. In this case, the structural strength of the first guide rib may be affected, and the service life of the first guide rib may be affected.

[0201] In some embodiments, when A1 / A2 ≥ 0.6, for example, when A1 / A2 is 0.6, 0.63 or 0.65, the thickness of the first guide rib is large, which can ensure the structural strength of the first guide rib, reduce air leakage, and help extend the service life of the first guide rib.

[0202] In some embodiments, when A1 / A2 ≥ 0.8, the thickness of the first guide rib is large, that is, the first guide rib is thick. In this case, the resistance of the airflow in the channel may increase, resulting in a decrease in the efficiency of the first fan 3, and the manufacturing cost will also increase due to the increase in the first guide rib.

[0203] In some embodiments, when A1 / A2≤0.8, for example, when A1 / A2 is 0.7, 0.75 or 0.8, the resistance of the airflow in the channel can be reduced, the airflow is facilitated, and the production cost can be reduced.

[0204] In some embodiments, when 0.6 ≤ A1 / A2 ≤ 0.8, for example, when A1 / A2 is 0.65, 0.7, or 0.75, this not only improves the structural strength of the first air guide rib, but also reduces the obstruction of the first air guide rib to the airflow in the channel, and also facilitates manufacturing. It should be noted that setting the ratio of the thickness of the first air guide rib to the thickness of the first plate 313 within a predetermined range, so that the thickness of the first air guide rib is within the predetermined range, facilitates the molding of the first air guide rib and the volute 31, and avoids appearance defects.

[0205] In some embodiments, in the radial direction of the wind wheel 32, the thickness of the second guide rib is A3, and A3 and A2 also satisfy the relationship: 0.6≤A3 / A2≤0.8. The thickness of the first guide rib and the thickness of the second guide rib may be different.

[0206] It should be noted that the setting of the thickness of the second guide rib and the effect thereof are similar to those of the first guide rib and will not be described in detail here.

[0207] For example, the thickness of the second guide rib can be thinner than that of the first guide rib. Since the resistance to airflow borne by the first guide rib is greater than the resistance to airflow borne by the second guide rib, the structural strength of the first guide rib can be ensured, and the production cost can be reduced by reducing the thickness of the second guide rib.

[0208] For another example, referring to FIG15 , FIG19 and FIG20 , in the radial direction of the wind wheel 32 , the thickness of the first guide rib is the same as the thickness of the second guide rib, which facilitates the processing of the first guide rib and the second guide rib.

[0209] In some embodiments, in the axial direction of the wind wheel 32 , the two first plates 313 are respectively located at both ends of the volute 31 , the thickness of the multiple first guide ribs is the same, and the thickness of the multiple second guide ribs is the same, which facilitates the processing and production of the volute 31 .

[0210] In some embodiments, by arranging a first guide structure 101 and a second guide structure 102 on the volute 31, the second guide structure 102 is closer to the second air inlet 311 than the first guide structure 101. In this way, the flow resistance of the leakage airflow between the wind wheel 32 and the first plate 313 is increased, the leakage loss between the wind wheel 32 and the volute 31 is reduced, the efficiency of the first fan 3 is improved, the turbulence level of the fluid at the second air inlet 311 of the first fan 3 is improved, the noise and vibration of the first fan 3 are reduced, and the overall performance of the indoor unit 100 is improved.

[0211] 22 , the volute 31 includes at least one third flow guiding structure 103 . The at least one third flow guiding structure 103 is disposed on a surface of the first plate 313 close to the wind wheel 32 , and at least a portion of the third flow guiding structure 103 surrounds the second air inlet 311 .

[0212] A gap is provided between the third guide structure 103 and the side wall of the second air inlet 311 , so that the third guide structure 103 is provided on the inner side of the first plate 313 , which is beneficial to reducing air leakage and improving fan surge.

[0213] It should be noted that the shape of the third flow-guiding structure 103 may match the shape of the volute profile.

[0214] By setting the outer shape of the third flow guiding structure 103 to match the profile of the volute, the third flow guiding structure 103 can match the flow trajectory of the airflow inside the volute 31 .

[0215] In some embodiments, according to the movement law of the airflow inside the volute 31, a third guide structure 103 is provided on the inner side of the first plate 313. The third guide structure 103 enables the airflow in the inner area of ​​the volute 31 close to the first plate 313 to move along the volute profile. In this way, the leakage of the airflow from the second air inlet 311 of the volute 31 can be reduced, thereby improving the surge condition of the first fan 3.

[0216] For example, referring to Figures 23 and 24, both ends of one of the at least one third guide structure 103 extend to the second air outlet 312 respectively, and the first end of the third guide structure 103 and the second end of the third guide structure 103 are spaced apart to form a non-closed structure.

[0217] It should be noted that this arrangement allows the airflow near the inner side of the volute 31 to flow toward the second air outlet 312 along the extension direction of the third air guide structure 103 under the constraint of the third air guide structure 103 and flow out at the second air outlet 312.

[0218] Under the action of the third guide structure 103 at the second air outlet 312, the airflow speed attenuation is suppressed, so that the wind speed difference at each location of the second air outlet 312 becomes smaller, the air outlet uniformity at the second air outlet 312 is improved, and the eddy current noise is reduced.

[0219] In some embodiments, the volute 31 is shaped like a snail shell.

[0220] 24 , the volute 31 includes a sub-channel 316. The first body 351 and the third air guide structure 103 together define the sub-channel 316. The sub-channel 316 is located within the channel of the volute 31 and at one end close to the second air outlet 312.

[0221] It should be noted that the sub-channel 316 can play a role of pressure diffusion, thereby increasing the outlet pressure at the second air outlet 312 .

[0222] After being sucked in from the second air inlet 311 , the airflow flows through the annular flow channel between the first body 351 and the wind wheel 32 and is discharged from the sub-channel 316 .

[0223] In some embodiments, referring to Figure 24, the volute 31 also includes a volute tongue 315, which is connected to the first body 351. The volute tongue 315 is located at the lower end of the first body 351 and is close to the side of the wind wheel 32. The volute tongue 315 can prevent the gas from circulating in the volute 31.

[0224] In some embodiments, referring to FIG. 24 , the first body 351 includes a first side 3161 (a volute tongue side), and the first side 3136 is located on a side of the first body 351 close to the volute tongue 315 .

[0225] The sub-channel 316 further includes a second side 3162 (opposite side), which is opposite to the first side. The first side 3161 and the second side 3162 are two sides defining the sub-channel 316, and the first side 3161 and the second side 3162 are oppositely disposed.

[0226] It should be noted that due to the structural characteristics of the volute 31, when the airflow in the sub-channel 316 is discharged from the second air outlet 312, the airflow is concentrated on one side of the sub-channel 316 close to the first side 3161. The air outlet speed and air flow on this side are relatively large, forming a larger airflow impact.

[0227] It can be understood that the airflow on one side of the sub-channel 316 close to the opposite side 3162 is relatively sparsely distributed, resulting in smaller air outlet speed and air outlet flow, causing different areas of the sub-channel 316 to exhibit uneven air supply speed and flow, and low air outlet uniformity.

[0228] In the related art, in the first fan 3, the gap between the volute tongue 315 and the outer edge (periphery) of the wind wheel 32 is too large, which may cause gas backflow at the volute tongue 315 when supplying air, reducing the efficiency and pressure of the first fan 3.

[0229] In some embodiments, the third flow-guiding structure 103 includes a sub-flow-guiding structure 41 , and the shape of the third flow-guiding structure 103 matches the shape of the volute profile of the volute 31 , so that at least a portion of the third flow-guiding structure 103 corresponds to the volute tongue 315 to form a sub-flow-guiding structure 41 .

[0230] In some embodiments, referring to Figure 24, in the radial direction of the wind wheel 32, the gap between the volute tongue 315 and the outer edge of the wind wheel 32 is T1, and the gap between the sub-guide structure 41 and the outer edge of the wind wheel 32 is T2. T1 and T2 satisfy the relationship: T2<T1. In this way, the efficiency of the first fan 3 can be effectively improved.

[0231] For example, when the first fan 3 is working, after the air flow is sucked into the volute 31 through the second air inlet 311, the wind wheel 32 drives the air flow to move along the volute profile inside the volute 31. The air flow near the first plate 313 of the volute 31 is constrained by the third guide structure 103, and the air flow flows along the extension direction of the third guide structure 103. The third guide structure 103 can also hinder the air flow from flowing toward the second air inlet 311 in the axial direction of the wind wheel 32, thereby reducing the leakage of the air flow to the outside of the volute 31.

[0232] In some embodiments, when the airflow flows through the sub-guide structure 41, the gap between the sub-guide structure 41 and the outer edge of the wind wheel 32 is small, which can increase the pressure on both sides of the volute 31 and the area defined by the sub-guide structure 41, effectively reduce the gas backflow at the second air outlet 312, and help to improve the surge problem of the first fan 3, improve the aerodynamic performance of the first fan 3, and thus improve the efficiency of the first fan 3.

[0233] It should be noted that the third flow-guiding structure 103 extends to the second air outlet 312 of the volute 31. This, on the one hand, is conducive to improving the uniformity of the air outlet and improving the vortex noise; on the other hand, it is conducive to improving the uniformity of the air outlet at the second air outlet 312, so that the second air outlet 312 of the volute 31 can evenly discharge air to the first heat exchanger 2, thereby improving the heat exchange efficiency of the first heat exchanger 2.

[0234] In some embodiments, referring to Figures 25 and 26, in the axial direction of the wind wheel 32, the height of the wind guide portion 106 is greater than the height of the third flow guide structure 103, the height of the wind guide portion 106 is H3, and the height of the third flow guide structure 103 is H4. H3 and H4 satisfy the relationship H3>H4. In this way, the third flow guide structure 103 can be avoided from interfering with the installation of the wind wheel 32, thereby facilitating the installation of the wind wheel 32.

[0235] In some embodiments, the height of the air guide portion 106 is the distance between the end of the air guide portion 106 away from the first plate 313 and the outer side of the first plate 313. The height of the third air guide structure 103 is the distance between the end of the third air guide structure 103 away from the first plate 313 and the outer side of the first plate 313.

[0236] In some embodiments, in the radial direction of the rotor 32, the outer dimension from the center of the rotor 32 to the third air guide structure 103 is greater than or equal to the outer diameter of the rotor 32. In some embodiments, referring to FIG26 , the outer dimension from the center of the rotor 32 to the third air guide structure 103 is D5, and the outer diameter of the rotor 32 is D6. D5 and D6 satisfy the relationship: D5 ≥ D6. In this way, the airflow is prevented from moving outward from the third air guide structure 103 in the axial direction of the rotor 32, reducing leakage of the airflow outward from the volute 31, and ensuring the airflow blocking effect of the third air guide structure 103.

[0237] It can be understood that the outer diameter of the wind wheel 32 is the outer edge diameter of the wind wheel 32 .

[0238] In some embodiments, referring to FIG. 27 , in the radial direction of the wind rotor 32 , the thickness of the third guide structure 103 is A4 , and in the axial direction of the wind rotor 32 , the thickness of the first plate is A2 .

[0239] It should be noted that the role and function of the third guide structure 103 in Figure 27 are similar to the role and function of the thickness of the first guide rib in Figure 15, and the thickness of the third guide structure 103 is similar to the thickness of the first guide structure 101 in principle, which will not be repeated here.

[0240] It can be understood that A4 and A2 satisfy the relationship: 0.6≤A4 / A2≤0.8.

[0241] It should be noted that the ratio of the thickness of the third flow-guiding structure 103 to the thickness of the first plate 313 is set within a predetermined range, so that the thickness of the third flow-guiding structure 103 is within the predetermined range, which facilitates the molding of the third flow-guiding structure 103 and the volute 31 and avoids appearance defects.

[0242] In some embodiments, in the axial direction of the wind wheel 32 , the two first plates 313 are located at both ends of the volute 31 , and the two first plates 313 have the same thickness.

[0243] In some embodiments, in the axial direction of the wind wheel 32 , the thickness of the third flow-guiding structure 103 is substantially the same at all locations.

[0244] In some embodiments, referring to FIG. 28 , the volute profile includes a point P1 , which is located above the first body 351 and close to the second air outlet 312 .

[0245] The volute profile further includes a point P2 , which is located above the first body 351 .

[0246] The volute profile further includes a first straight line segment P1P2 . The first straight line segment P1P2 is disposed close to the second air outlet 312 .

[0247] The volute profile further includes a point P3 , which is located at the first end of the volute tongue 315 .

[0248] The volute profile also includes a helical line segment P2P3 . The helical line P2P3 is the main body of the volute 31 .

[0249] The volute profile further includes a point P4 , which is located at the second end of the volute tongue 315 .

[0250] The volute profile further includes an inwardly concave curve segment P3P4 , which is the volute tongue 315 of the volute 31 .

[0251] The volute profile further includes a point P5 , which is located below the first body 351 and close to the second air outlet 312 .

[0252] The volute profile further includes a second straight line segment P4P5 , which is disposed near the second air outlet 312 .

[0253] It should be noted that the area enclosed by the first straight line segment P1P2 and the second straight line segment P4P5 is the sub-channel 316 of the volute 31 .

[0254] For example, referring to FIG. 28 , the first straight line segment P1P2 , the spiral line segment P2P3 , the concave curve segment P3P4 , and the second straight line segment P4P5 are sequentially connected to form the volute profile.

[0255] In some embodiments, referring to FIG. 29 , the volute 31 further includes at least one fourth flow guiding structure 104 , and the at least one fourth flow guiding structure 104 is located on a side of the first plate 313 close to the wind wheel 32 .

[0256] The fourth guide structure 104 extends along the second air outlet 312 toward the second air inlet 311, thereby facilitating the flow of air within the channel. In some embodiments, the fourth guide structure 104 is spaced apart from the third guide structure 103. This allows the fourth guide structure 104 and the third guide structure 103 to cooperate to improve the uniformity of air flow from the second air outlet 312.

[0257] In some embodiments, the at least one third air guide structure 103 includes two third air guide structures 103 , which are respectively located on the sides of the two first plates 313 close to the wind wheel 32 , thereby improving the air outlet uniformity of the second air outlet 312 .

[0258] 30 and 31 , each of the two third air guide structures 103 includes two first air guide segments 111, which are located at two ends of the third air guide structure 103 near the second air outlet 312. The first air guide segments 111 extend along the second air outlet 312 toward the second air inlet 311.

[0259] 30 and 31 , the fourth air guiding structure 104 includes a second air guiding section 112 , which is located in the sub-channel 316 . The second air guiding section 112 extends from the second air outlet 312 toward the second air inlet 311 .

[0260] In some embodiments, referring to Figures 28 and 31, two first guide sections 111 and one second guide section 112 are spaced apart along the direction from the first straight line segment P1P2 to the second straight line segment P4P5. This serves to guide the airflow in the sub-channel 316, which is beneficial to the uniformity of the air outlet of the second air outlet 312.

[0261] For example, providing at least one first guide section 111 or at least one second guide section 112 in the sub-channel 316 near the second air outlet 312 can guide and disperse the airflow, so that when the airflow flows through the at least one first guide section 111 or at least the second guide section 112 of the sub-channel 316, the attenuation of the airflow speed is suppressed, so that the wind speed difference at each location of the second air outlet 312 is reduced, and the degree of airflow turbulence at the second air outlet 312 is reduced. The vortex of the airflow at the outlet section of the sub-channel 316 of the volute 31 is reduced, making the airflow more stable and improving the ventilation efficiency.

[0262] It should be noted that the provision of at least one first guide section 111 and at least one second guide section 112 reduces the eddy current problem generated by the second air outlet 312 , improves the eddy current noise, thereby reducing the overall machine noise and improving the air outlet uniformity at the second air outlet 312 .

[0263] In some embodiments, referring to FIG32 , the angle between one of the two first guide sections 111 and the second guide section 112 is β1, the angle between the other of the two first guide sections 111 and the second guide section 112 is β2, and the difference between β1 and β2 is β.

[0264] It should be noted that the diversion angle β is the angle between two adjacent first diversion sections 111 and an adjacent second diversion section 112 .

[0265] In some embodiments, when |β|≥1°, the relative uniformity of two adjacent first guide sections 111 and the adjacent second guide sections 112 is poor, which affects the uniformity of air output.

[0266] In some embodiments, when |β| is less than 1°, for example, |β| can be 0.95°, 0.9° or 0.85°. In this way, the uniformity of the air outlet can be improved, the air outlet can be made more uniform, and the noise can be reduced. It should be noted that by reasonably setting the difference β between the guide angles, at least one first guide section 111 and at least one second guide section 112 are relatively evenly distributed. In this way, on the one hand, the airflow at the second air outlet 312 can be relatively evenly guided and evacuated, and on the other hand, the airflow at the second air outlet 312 is made more uniform, thereby improving the flow of the second air outlet 312 of the first fan 3, preventing airflow turbulence and noise, and improving the uniformity of the air outlet, so that the air outlet is more uniform.

[0267] In some embodiments, referring to FIG. 32 , the fourth flow guiding structure 104 may be located between the non-closed structures formed by the third flow guiding structures 103 .

[0268] In some embodiments, referring to Figures 28 and 32 , the angle between the first side 3161 and the adjacent first flow guiding section 111 is β3, and the angle between the second side 3162 and the adjacent second flow guiding section 112 is β4.

[0269] It should be noted that the difference between β1 and β3 satisfies the relationship: |β1-β3| < 1°; the difference between β2 and β4 satisfies the relationship: |β2-β4| < 1°. The difference between β1 and β3 and the difference between β2 and β4 are similar to the difference between β1 and β2 in setting the β value, and will not be further explained here.

[0270] By setting the difference between β1 and β3 and the difference between β2 and β4, the air outlet uniformity can be improved.

[0271] In some embodiments, when the volute includes four or more fourth guide structures 104 (such as fourth guide ribs), the gap between at least one adjacent first guide section 111 and at least one second guide section 112 will be reduced, thereby increasing the wind outlet resistance and reducing the wind outlet efficiency.

[0272] In some embodiments, when the volute includes three or fewer fourth guide structures 104 , for example, the volute includes one, two, or three fourth guide ribs. This can improve ventilation efficiency and help improve air outlet uniformity.

[0273] It should be noted that the number of the fourth flow-guiding structures 104 can be selected according to the size of the volute 31 .

[0274] In some embodiments, referring to Figure 33, the length of the second guide section 112 is L1, and the length from point F (the intersection of the extension line of the end of the second plate 314 close to the volute tongue 315 and the extension line of the fourth guide structure 104) to the second air outlet 312 is L2, and L1 and L2 satisfy the relationship: L1≥L2. In this way, the second guide section 112 of the fourth guide structure 104 is located in the sub-channel 316, ensuring the guide effect of the fourth guide structure 104 at the second air outlet 312.

[0275] It is understood that the length of the second guide section 112 is greater than or equal to the length from the center of the volute tongue 315 to the second air outlet 312. It should be noted that L2 is the distance from the first edge of the second air outlet 312 on the second plate 314 (the circumferential side plate) near the volute tongue 315 to point F, and point F is the intersection of the extension line of the first edge of the second air outlet 312 extending from the inner wall of the second plate 314 and the extension line of the end side of the volute 31 away from the second air outlet 312.

[0276] In some embodiments, when L1 / L2 < 1, the length of the second guide segment 112 is less than the length from the center of the volute tongue 315 to the second air outlet 312 , which may affect the guide effect of the fourth guide structure 104 at the second air outlet 312 .

[0277] In some embodiments, when L1 / L2≥1, for example, L1 / L2 is 1, 1.05, or 1.1, this is beneficial to improving the guiding effect of the second guiding section 112.

[0278] In some embodiments, when L1 / L2 > 1.5, the length of the second guide section 112 is too long, resulting in unnecessary waste of material.

[0279] In some embodiments, when L1 / L2≤1.5, for example, L1 / L2 is 1.4, 1.45 or 1.5, costs can be saved.

[0280] In some embodiments, when 1≤L1 / L2≤1.5, for example, L1 / L2 is 1.2, 1.3, or 1.4, the guiding effect of the second guiding section 112 can be ensured and the cost can be saved.

[0281] In some embodiments, the at least one third flow guiding structure 103 includes a plurality of third flow guiding structures 103 (such as flow guiding ribs), and the plurality of third flow guiding structures 103 are respectively disposed on surfaces of the two first plates 313 close to the wind wheel 32 .

[0282] In some embodiments, by arranging at least one of the first guide structure 101, the second guide structure 102, the third guide structure 103 or the fourth guide structure 104 on the inner side of the second air inlet 311 of the volute 31 of the first fan 3, the airflow can be hindered from flowing in the axial direction of the wind wheel 32 toward the second air outlet 312, thereby reducing the leakage of the airflow at the second air inlet 311 to the outside of the volute 31.

[0283] In some embodiments, referring to FIG. 34 , the indoor unit 100 is installed in a suspended ceiling 201 .

[0284] In some embodiments, a receiving space is formed inside the suspended ceiling 201 , and the indoor unit 100 is accommodated in the receiving space.

[0285] 35 , the suspended ceiling 201 may include a fourth plate 211 (eg, a bottom plate of the suspended ceiling 201 ). The fourth plate 211 extends horizontally and may form the bottom end of the suspended ceiling 201 .

[0286] The suspended ceiling 201 may include a fifth panel 212 (front panel). The fifth panel 212 extends in a vertical direction.

[0287] In some embodiments, referring to FIG. 35 , the fifth plate 212 is connected to an edge of the fourth plate 211 and extends upward from the edge of the fourth plate 211 , and the fourth plate 211 and the fifth plate 212 form a receiving space.

[0288] 35 , the fifth plate 212 has a first opening 213 (ventilation hole), which improves the structural consistency of the suspended ceiling 201 .

[0289] It should be noted that the first opening 213 is communicated with the accommodating space.

[0290] In some embodiments, referring to FIG. 36 , the first air inlet 13 is connected to the third cavity. The first air inlet 13 serves as an inlet for the external air of the casing 1 , allowing the air in the accommodating space to enter the third cavity through the first air inlet 13 .

[0291] In some embodiments, referring to FIG. 37 , the first air outlet 14 is connected to the third cavity. The first air outlet 14 serves as an outlet for the heat exchange airflow in the housing 1 , and the airflow in the third cavity can flow out through the first air outlet 14 .

[0292] In some embodiments, the first air inlet 13 is located at a first end of the housing 1 , and the first air outlet 14 can be located at a second end of the housing 1 .

[0293] For example, referring to Figure 35, the first air outlet 14 is closer to the first opening 213 than the first air inlet 13. In this way, the heat exchange airflow blown out by the first air outlet 14 can flow into the room through the first opening 213, which is beneficial to heat exchange in the indoor space.

[0294] In some embodiments, the housing 1 is substantially in the shape of a rectangular parallelepiped. Referring to Figures 36 to 38 , the first air inlet 13 and the first air outlet 14 are located at opposite ends of the housing 1 in the width direction of the housing 1 .

[0295] 37 , the housing 1 further includes a sixth plate 23 (top plate). The sixth plate 23 forms the top of the housing 1.

[0296] In some embodiments, the housing 1 further includes a bottom panel, which forms the bottom end of the housing 1 .

[0297] It should be noted that the top end of the casing 1 and the bottom end of the casing 1 are two opposite ends of the casing 1 in the vertical direction.

[0298] In some embodiments, the housing 1 further includes two side panels connected to the sixth plate 23 and the left and right sides of the bottom plate, forming two opposite ends of the housing 1 in the longitudinal direction of the housing 1 .

[0299] For example, the third cavity can be formed by the sixth plate 23, the bottom plate and the two side plates.

[0300] In some embodiments, the first fan 3 may be a cross-flow fan.

[0301] The crossflow fan extends along the length of the housing 1. In other words, the length of the housing 1 corresponds to the axial direction of the crossflow fan. Due to the crossflow fan's small size, it reduces the size of the indoor unit 100 and the depth of the ceiling 201, making it easier to install the indoor unit 100 within the room.

[0302] For example, the cross-flow fan is disposed close to the first air outlet 14 , the first heat exchanger 2 is disposed close to the first air inlet 13 , and the cross-flow fan is located between the first air outlet 14 and the first heat exchanger 2 .

[0303] In some embodiments, the first heat exchanger 2 may be a multi-stage heat exchanger.

[0304] For example, referring to Figure 39 , the first heat exchanger 2 includes three heat exchange sections, which are connected in sequence. For example, two adjacent sections of the three heat exchangers are connected and arranged at a predetermined angle. For example, the first heat exchanger 2 can have a nearly V-shaped structure, with the open end of the V facing the crossflow fan and the closed end of the V facing the first air inlet 13. This arrangement increases the heat exchange area of ​​the first heat exchanger 2, improves the heat exchange efficiency of the indoor unit 100, and increases the amount of air exchanged.

[0305] For another example, the multi-stage heat exchanger has a semi-enclosed structure, and part of the cross-flow fan is arranged in the semi-enclosed structure of the first heat exchanger 2, so that the cross-flow fan and the first heat exchanger 2 are transformed from being separately arranged to being overlappingly arranged. While the volume of the cross-flow fan and the first heat exchanger 2 remains unchanged, it is beneficial to reduce the space occupied by the first heat exchanger 2 and the cross-flow fan.

[0306] In some embodiments, the indoor unit 100 includes a water receiving portion 24 (water receiving tray). The water receiving portion 24 is located at the bottom of the third chamber and is configured to receive condensed water flowing from the first heat exchanger 2 when the indoor unit 100 is in operation. The water receiving portion 24 is provided with a drain port configured to discharge the condensed water in the water receiving portion 24 out of the indoor unit 100.

[0307] In some embodiments, the first fan 3 may be a centrifugal fan. The centrifugal fan is located closer to the first air inlet 13 relative to the first heat exchanger 2. The first heat exchanger 2 is disposed between the first air outlet 14 and the centrifugal fan.

[0308] In some embodiments, referring to FIG. 38 , the indoor unit 100 includes an electric control box 6 .

[0309] The electric control box 6 includes a first controller. The first controller is coupled to at least the outdoor unit and the first fan 3. The first controller is configured to control the operation of various components within the air conditioner 1000 so that the various components of the air conditioner 1000 operate to achieve various predetermined functions of the air conditioner 1000.

[0310] It should be noted that the controller includes a processor. The processor may include a central processing unit (CPU), a microprocessor (microprocessor), or an application-specific integrated circuit (ASIC), and may be configured to perform the corresponding operations described in the controller when the processor executes a program stored in a non-transitory computer-readable medium coupled to the controller.

[0311] In some embodiments, referring to FIG. 40 , the indoor unit 100 includes a display component 7 (display).

[0312] For example, the display component 7 is installed in the front of the housing 1 to display at least the operating status information of the indoor unit 100, so that the user can conveniently view and identify the display content of the display component 7.

[0313] It can be understood that the display assembly 7 is electrically connected to the first controller in the electric control box 6, so that the first controller supplies power to the display assembly 7 and transmits signals between the display assembly 7 and the first controller.

[0314] It should be noted that the display component 7 can display the operating status information of the indoor unit 100, such as temperature, wind speed, parameters, etc., and can also include air quality parameters, etc.

[0315] For another example, the display component 7 is installed on the fifth board 212. Since the display component 7 has a display function, it is convenient for the user to identify the content displayed by the display component 7, and the user's head-up angle can be reduced to improve comfort.

[0316] It should be noted that when the user views the display component 7 , the user's head-up angle is within 10°, that is, the user can see the temperature, air quality and other parameters displayed on the display component 7 by slightly looking up.

[0317] In some embodiments, the display assembly 7 can be detachably mounted on the fifth plate 212 , which makes it convenient to disassemble, assemble and repair the display assembly 7 .

[0318] In some embodiments, the indoor unit 100 includes a voice device, and the user can control the indoor unit 100 through the voice device.

[0319] For example, the voice device may include a microphone 5. The microphone 5 is configured to obtain the user's voice information so that the user can perform voice control on the indoor unit 100 by voice.

[0320] It should be noted that the microphone 5 is installed in the display assembly 7, so that the display assembly 7 has a voice interaction function.

[0321] In some embodiments, referring to FIG47 , the display assembly 7 further includes a cover 73. The cover 73 includes a panel. For example, the panel of the cover 73 can be flush with the fifth plate 212, thereby improving the appearance of the indoor unit 100 and facilitating transportation.

[0322] In order to facilitate disassembly and maintenance between the cover body 73 and the fifth plate, the panel of the cover body 73 is arranged parallel to the fifth plate 212, or the panel can protrude outward relative to the fifth plate 212.

[0323] In some embodiments, referring to Figure 47 , the indoor unit 100 further includes a sound pickup hole 731, which is located on the side of the display assembly 7 away from the housing 1. In some embodiments, referring to Figure 47 , the sound pickup hole 731 is located on the cover 73 (display box cover).

[0324] In some embodiments, the microphone 5 is installed in the display assembly 7 corresponding to the sound pickup hole 731. The setting of the sound pickup hole 731 is conducive to the sound reception of the microphone 5, thereby improving the sound reception effect of the microphone 5.

[0325] In some embodiments, the voice device includes a speaker 8. The speaker 8 is installed below the housing 1, and the voice device can use the speaker 8 to at least broadcast the operating status information of the indoor unit 100.

[0326] For example, the speaker 8 can be mounted on the fourth board 211. Referring to Figures 41 and 42, the speaker 8 is mounted on the fourth board 211 so that the angle between the microphone 5 and the direction of the speaker 8 is greater than or equal to 90 degrees, thereby preventing the speaker 8 from interfering with the sound reception of the microphone 5.

[0327] For another example, the microphone 5 is installed in the display assembly 7. In this way, there is no need to set up a separate voice box to install and protect it, which effectively saves installation space and facilitates overall disassembly and assembly, and is easy to maintain and service.

[0328] For another example, referring to FIG46 , the speaker 8 is mounted on the fourth board 211 so that the microphone 5 and the speaker 8 are separated from each other, thereby preventing the speaker 8 from interfering with the sound reception of the microphone 5 and improving the sound reception effect.

[0329] In some embodiments, referring to FIG. 35 , the fifth plate 212 has a second opening 214 (mounting opening), and the second opening 214 is configured to accommodate the display assembly 7 .

[0330] In some embodiments, referring to Figures 43 to 45, at least one clip 216 (spring clip) is provided on the display component 7, and the display component 7 can be installed at the second opening 214 through one of the at least one clip 216 to achieve a detachable connection between the display component 7 and the fifth plate 212. In this way, the clip-on installation method is simple and convenient.

[0331] For example, at least one clip 216 includes multiple clips 216. When the display component 7 moves from the outside of the ceiling 201 toward the accommodating space, the first end of one of the multiple clips 216 abuts against the display component 7, and the second end abuts against the side of the fifth plate 212 toward the casing 1, thereby realizing a detachable connection of the display component 7.

[0332] In some embodiments, the fourth plate 211 has a third opening 215 (connection port). Referring to FIG. 45 , the speaker 8 can be detachably mounted on the third opening 215 via a plurality of snap-fit ​​portions 216 .

[0333] In some embodiments, referring to FIG45 , the display assembly 7 is mounted at the second opening 214, with the side of the panel closer to the housing 1 abutting against the side of the fifth plate 212 facing away from the housing 1. The sound pickup hole 731 is located on the panel. The side of the panel facing away from the housing 1 and the side of the display assembly 7 facing away from the housing 1 are flush with each other.

[0334] In some embodiments, referring to Fig. 49 , the display assembly 7 includes a display portion 72 (display unit). The display portion 72 is attached to a side of the cover 73 facing the housing 1 and is configured to display various information.

[0335] It should be noted that the display portion 72 may be a light-emitting diode (LED) display screen module, which is the main component unit of the LED display screen and may be composed of an LED light-emitting diode and a driving circuit, an integrated circuit (IC) and a plastic package.

[0336] In some embodiments, referring to FIG50 , the portion of the cover 73 that is in contact with the display unit 72 is a light-transmitting portion 733 (transparent display window). The light-transmitting portion 733 facilitates viewing of the content displayed by the display assembly 7 .

[0337] In some embodiments, referring to FIG. 49 , a second controller 71 (control board) is fixedly connected to the interior of the display assembly 7 , and the display portion 72 is mounted on the second controller 71 .

[0338] For example, the second controller 71 is electrically connected to the first controller, so that the second controller 71 can at least obtain the operating status information of the indoor unit 100 in the first controller, so that the information obtained by the second controller 71 can be displayed on the display unit 72.

[0339] In some embodiments, the second controller 71 in the display assembly 7 is coupled to the microphone 5 and the speaker 8 .

[0340] For example, the second controller 71 generates a control instruction based on the voice information collected by the microphone 5 and sends it to the first controller. After receiving the control instruction, the first controller executes the control instruction and obtains at least the operating status information of the indoor unit 100, and sends the operating status information to the second controller 71. The second controller 71 transmits the information to the display unit 72 for display.

[0341] For another example, the second controller 71 is coupled to the speaker 8 , and the second controller 71 can use the speaker 8 to broadcast the above-mentioned operating status information.

[0342] It should be noted that the second controller 71 integrates a voice second controller 71 and a display second controller 71 .

[0343] In some embodiments, the display assembly 7 further includes a fourth mounting portion 74 (display box seat) connected to the cover 73 .

[0344] 48 and 49 , the fourth mounting portion 74 is connected to the cover 73 to form a display box having a box structure, and the display box can protect the components inside the display assembly 7 .

[0345] It should be noted that the display unit 72 is installed in the fourth installation portion 74. When the fourth installation portion 74 is connected to the cover 73, the display unit 72 fits the cover 73, and the cover 73 and the fourth installation portion 74 cooperate to clamp the display unit 72, so that the display unit 72 and the second controller 71 have better stability.

[0346] In some embodiments, referring to FIG. 48 , the fourth mounting portion 74 and the cover body 73 may be connected via a snap-fit ​​structure 77 .

[0347] For example, referring to Figures 51 and 52, a locking portion 734 (locking column) can be provided on the cover body 73, and a through hole 742 (such as a connecting hole) corresponding to the locking portion 734 is provided on the fourth mounting portion 74.

[0348] When assembling the fourth mounting portion 74 and the cover body 73 , the fourth mounting portion 74 and the cover body 73 can be buckled together by the buckle structure 77 , and then locked by the locking member and the locking portion 734 .

[0349] In some embodiments, the fourth mounting portion 74 includes a receiving portion 741 configured to mount the microphone 5 .

[0350] In some embodiments, a limiting portion 732 is provided on the cover 73 .

[0351] For example, when the fourth mounting portion 74 is connected to the cover 73 , the limiting portion 732 cooperates with the accommodating portion 741 to position and fix the microphone 5 , so that the microphone 5 is firmly connected between the cover 73 and the fourth mounting portion 74 .

[0352] It should be noted that, by providing the limiting portion 732 in cooperation with the accommodating portion 741 , the installation firmness of the microphone 5 is improved.

[0353] As shown in FIG53 , the installation distance between the speaker 8 and the display assembly 7 is A6.

[0354] In some embodiments, A6 is less than 70 mm, resulting in a smaller installation distance A6 between the speaker 8 and the display assembly 7, which may shorten the distance between the speaker 8 and the sound pickup hole 731, resulting in echo and howling effects, affecting the sound pickup effect of the microphone 5, and also generating noise.

[0355] In some embodiments, A6 ≥ 70 mm, for example, A6 is 100 mm, 150 mm or 200 mm. This helps to prevent the speaker 8 from interfering with the sound pickup hole 731 , thereby improving the sound pickup effect of the microphone 5 .

[0356] In some embodiments, A6>425 mm. Thus, due to the large distance between the speaker 8 and the display assembly 7, more transmission lines will be required between the speaker 8 and the display assembly 7, thereby increasing the cost.

[0357] In some embodiments, A6≤425mm, for example, A6 is 200mm, 250mm or 300mm, which is helpful to reduce line length and lower costs.

[0358] In some embodiments, 70mm≤A6≤425mm, for example, A6 is 100mm, 200mm or 300mm. This not only reduces costs but also helps ensure the sound reception effect of the microphone 5.

[0359] It is understandable that by setting the installation distance A6 between the speaker 8 and the display assembly 7, the influence of the speaker 8 on the sound reception of the microphone 5 can be reduced or even avoided, thereby reducing echo and noise.

[0360] It should be noted that the installation distance A6 between the speaker 8 and the display assembly 7 is the minimum distance between the projection of the panel of the display assembly 7 on the horizontal plane and the projection of the speaker 8 on the horizontal plane.

[0361] In some embodiments, the panel of display assembly 7 is rectangular, and speaker 8 is also rectangular. The projection of the panel of display assembly 7 on a horizontal plane is rectangular, and the projection of speaker 8 on a horizontal plane is rectangular. Therefore, the installation distance A6 between speaker 8 and display assembly 7 is the distance between a corner of the panel closest to speaker 8 and a corner of speaker 8 closest to the panel, as shown in FIG53 , when projected on a horizontal plane.

[0362] In some embodiments, when the display assembly 7 is installed, the side of the panel close to the housing 1 abuts against the side of the fifth plate 212 away from the housing 1. For ease of measurement, the installation distance between the speaker 8 and the display assembly 7 is defined as A6, and A6 satisfies the relationship:

[0363] It should be noted that H is the vertical distance between the speaker 8 and the side of the fifth plate 212 away from the housing 1, and L3 is the horizontal distance between the speaker 8 and the display assembly 7.

[0364] In some embodiments, referring to FIG. 53 , a vertical distance between the speaker 8 and the side of the fifth plate 212 away from the housing 1 is H.

[0365] In some embodiments, H is less than 50 mm, resulting in a small vertical distance H, which will make the distance between the speaker 8 and the sound pickup hole 731 too small, causing echo and howling effects, affecting the sound pickup effect of the microphone 5, and also generating noise.

[0366] In some embodiments, H≥50 mm, for example, H is 100 mm, 150 mm or 200 mm. This helps to prevent the speaker 8 from interfering with the sound pickup hole 731 and improve the sound pickup effect of the microphone 5.

[0367] In some embodiments, H>425 mm. Thus, due to the long distance between the speaker 8 and the display assembly 7, the transmission line provided between the speaker 8 and the display assembly 7 will be too long, thereby increasing the cost.

[0368] In some embodiments, H≤425 mm, for example, H is 200 mm, 250 mm, or 300 mm, which is beneficial to reducing line length and lowering costs.

[0369] In some embodiments, 50mm≤H≤425mm, for example, 100mm, 200mm or 300mm. This not only reduces costs but also helps ensure the sound reception effect of the microphone 5.

[0370] For example, the preset value of H may be 50 mm, 55 mm, or 60 mm, etc. In this way, not only the cost can be reduced, but also the sound receiving effect of the microphone 5 can be ensured.

[0371] In some embodiments, the horizontal distance between the speaker 8 and the display assembly 7 is L3.

[0372] It should be noted that the setting and principle of the preset range value of L3 are similar to the setting and principle of the preset range value of H, and will not be repeated here.

[0373] For example, the preset value of L3 may be 50 mm, 55 mm, or 60 mm, etc. In this way, not only can the cost be reduced, but also the sound receiving effect of the microphone 5 can be ensured.

[0374] In some embodiments, referring to FIG. 54 , the electric control box 6 is installed at one end of the casing 1 in the length direction.

[0375] 21 , the electric control box 6 is located outside the housing 1, and the display assembly 7 is disposed in correspondence with the electric control box 6 so that the display assembly 7 is spaced apart from the first opening 213 in the length direction of the housing 1. By disposing the display assembly 7 in correspondence with the electric control box 6, the installation convenience of the display assembly 7 is improved.

[0376] In some embodiments, the display assembly 7 includes a second controller 71. The second controller 71 includes a display unit 72 for displaying at least operating status information of the indoor unit 100.

[0377] For example, the display assembly 7 includes a display box, which is formed by connecting a cover 73 and a fourth mounting portion 74 , and the second controller 71 is installed in the display box.

[0378] 55 to 58 , the indoor unit 100 may include a first connection line 91 . The first connection line 91 is connected between the first controller and the second controller 71 to achieve coupling between the display assembly 7 and the electric control box 6 .

[0379] In some embodiments, referring to Figure 56, the indoor unit 100 further includes a first mounting portion 75 (first wiring portion). The first mounting portion 75 is located at one end of the display assembly 7 close to the fourth board 211, and the first mounting portion 75 is for connecting wires to pass through.

[0380] 57 , the display assembly 7 is mounted on the fifth plate 212, and the end of the display assembly 7 close to the fourth plate 211 is the bottom end of the display assembly 7. That is, the first mounting portion 75 is provided at the bottom end of the display assembly 7, i.e., the display box.

[0381] In some embodiments, the first mounting portion 75 is a wiring opening, and a fourth opening 751 is provided at the bottom end of the cover body 73 and the fourth mounting portion 74. When the cover body 73 and the fourth mounting portion 74 are connected, the two fourth openings 751 (first notch) jointly define the first mounting portion 75.

[0382] In some embodiments, in order to facilitate the connection between the first connecting line 91 and the second controller 71, the second controller 71 is provided with a first mounting portion 75 near the bottom.

[0383] 58 , the second controller 71 is disposed at the lower portion of the display assembly 7 , shortening the wiring distance between the second controller 71 and the first mounting portion 75 .

[0384] In some embodiments, a connection terminal is provided at one end of the second controller 71 close to the fourth board 211 , ie, at the bottom end of the second controller 71 , and one end of the connecting wire passes through the first mounting portion 75 and is connected to the connection terminal.

[0385] Thus, by arranging the connection terminal at the end of the second controller 71 close to the fourth board 211, the connection terminal is arranged closer to the first mounting portion 75 at the bottom relative to other components on the second controller 71. This shortens the wiring distance between the connection terminal and the first mounting portion 75. This arrangement allows the first connecting wire 91 to pass through the first mounting portion 75 at the bottom from the outside of the display assembly 7 and then directly connect to the connection terminal, thus reducing the length of the first connecting wire 91.

[0386] It should be noted that after the first connecting line 91 passes through the first mounting portion 75 at the bottom from the outside of the display component 7, it does not need to cross the second controller 71, which improves safety performance. This wiring method is clean, tidy, simpler and more convenient.

[0387] In some embodiments, the wiring terminal includes a first terminal. The first terminal is suitable for connecting to a power source external to the display assembly 7 so that the external power source can power the second controller 71. The wiring terminal may include a second terminal. The second terminal is suitable for electrically connecting to other components to enable signal transmission between the second controller 71 and the other components.

[0388] It can be understood that there are multiple second terminals.

[0389] For example, the first connection line 91 includes a power line. The power line is connected between the first controller and the first terminal, and the power line is connected to the power module on the first controller. After the indoor unit 100 is powered on, the power module on the first controller supplies power to the second controller 71, thereby ensuring the normal operation of the display unit 72.

[0390] In some embodiments, the first connection line 91 includes a first transmission line (transmission line). The first end of the first connection line 91 is connected to the first controller, and the second end thereof is connected to the second terminal. The second controller 71 is communicatively connected to the first controller via the first transmission line.

[0391] In some embodiments, referring to FIG. 58 , in order to ensure that the microphone 5 has sufficient installation space, the microphone 5 in the display assembly 7 is disposed on a side of the second controller 71 away from the first installation portion 75 .

[0392] In some embodiments, the speaker 8 is mounted on the fourth board 211. Referring to FIG59, the speaker 8 is coupled to the second controller 71 via a second connection line 92.

[0393] For example, a first end of the second connecting cable 92 is connected to the speaker 8, and a second end thereof is connected to the connection terminal. The second connecting cable 92 may include a second transmission cable connected between the speaker 8 and the second terminal (signal transmission terminal) to enable communication between the speaker 8 and the second controller 71. The second connecting cable 92 also includes a power supply cable connected between the speaker 8 and the first terminal (power terminal) to supply power to the speaker 8.

[0394] In some embodiments, the indoor unit 100 includes a second mounting portion 76 (second wiring portion). The second mounting portion 76 is located at one end of the display assembly 7 close to the fourth board 211 and is configured to allow the second connection line 92 to pass through.

[0395] Continuing to refer to FIG. 56 , the second mounting portion 76 is located at the bottom end of the display assembly 7 .

[0396] The speaker 8 is located on the fourth board 211, that is, the speaker 8 is located below the display assembly 7. The second mounting portion 76 is opened at the bottom end of the display assembly 7, which facilitates the installation of the second connecting line 92 between the speaker 8 and the second controller 71.

[0397] For example, referring to Figure 60, the second mounting portion 76 is a wiring opening, and the bottom ends of the cover body 73 and the fourth mounting portion 74 are respectively provided with a fifth opening 761 (second notch). When the cover body 73 and the fourth mounting portion 74 are connected, the two fifth openings 761 jointly define the second mounting portion 76.

[0398] In some embodiments, referring to FIG. 56 , the first mounting portion 75 and the second mounting portion 76 are disposed at the bottom end of the display assembly 7 , and are spaced apart along the length direction of the housing 1 .

[0399] In some embodiments, referring to FIG57 , the electric control box 6 includes a third body and a guide portion 62. The side of the electric control box 6 away from the display assembly 7 is a first side. The guide portion 62 (wire outlet) is provided on the first side of the third body away from the display assembly 7. The guide portion 62 is configured to allow the first connecting wire 91 to pass through.

[0400] It should be noted that one end of the first connecting line 91 is coupled to the first controller through the guide portion 62 .

[0401] In some embodiments, referring to Figure 57, the electrical control box 6 also includes a wire harness assembly 61 (wire harness), and the wire harness assembly 61 is provided on the side of the electrical control box 6 close to the fourth plate 211 (the bottom surface of the electrical control box 6) and the first side surface. The wire harness assembly 61 is configured to clamp the first connecting wire 91.

[0402] It should be noted that the wire harness assembly 61 can clamp and press the first connecting wire 91. Providing multiple wire harness assemblies 61 can fix the routing path of the first connecting wire 91.

[0403] For example, referring to Figure 59, the first connecting line 91 coming out of the guide part 62 is routed along the first side surface and the bottom surface of the electric control box 6, and is connected to the second controller 71 through the first mounting part 75 at the bottom end of the display component 7.

[0404] In some embodiments, the first mounting portion 75 may be provided at an end of the display assembly 7 away from the fourth board 211. The first mounting portion 75 is configured to allow the first connection line 91 to pass through.

[0405] In some embodiments, referring to Figures 61 to 63 , the display assembly 7 is mounted on the fifth plate 212, and the end of the display assembly 7 away from the fourth plate 211 is the top of the display assembly 7. In other words, the first mounting portion 75 is disposed at the top of the display assembly 7. It should be noted that the top of the display assembly 7 is the top of the display box.

[0406] In some embodiments, referring to Figure 64, the first mounting portion 75 is a wiring opening, and the top of the cover body 73 and the fourth mounting portion 74 are both provided with a fourth opening 751. When the cover body 73 and the fourth mounting portion 74 are connected, the two fourth openings 751 jointly define the first mounting portion 75.

[0407] For example, to facilitate the connection between the first connecting line 91 and the second controller 71, the second controller 71 is placed close to the top first mounting portion 75. Referring to Figure 64, the second controller 71 is placed above the display assembly 7, shortening the wiring distance between the second controller 71 and the top first mounting portion 75.

[0408] For another example, a connection terminal is provided at one end of the second controller 71 away from the fourth board 211 , ie, at the top of the control board, and one end of the first connecting wire 91 passes through the first mounting portion 75 and is connected to the connection terminal.

[0409] The connection terminal is arranged near the first mounting portion 75 at the top relative to other components on the second controller 71 , and the connection terminal is located above the second controller 71 .

[0410] By arranging the connection terminal on the second controller 71 close to the first mounting portion 75 at the top, the distance between the connection terminal and the first mounting portion 75 can be shortened.

[0411] In some embodiments, the first connecting wire 91 passes through the first mounting portion 75 at the top from the outside of the display assembly 7 and can be connected to the connection terminal, thereby saving the length of the first connecting wire 91 .

[0412] It should be noted that the first connecting line 91 does not need to cross the second controller 71 after passing through the first mounting portion 75 at the top from the outside of the display component 7, thereby improving safety performance. This wiring method is clean, tidy, simpler and more convenient.

[0413] 64 , in order to ensure that the microphone 5 has sufficient installation space in the display assembly 7, the microphone 5 is installed on a side of the second controller 71 away from the top first installation portion 75. It should be noted that the microphone 5 is coupled to the connection terminal.

[0414] For example, the second controller 71 is arranged on the upper part of the display component 7, and the wiring terminal is arranged on the upper part of the second controller 71, so that the wiring terminal is arranged as close to the first mounting portion 75 as possible, thereby making the first connecting line 91 in the display component 7 have a shorter line length, thereby improving the neatness of the various connecting lines inside the display component 7.

[0415] In some embodiments, the speaker 8 is mounted on the fourth board 211 . The speaker 8 is connected to the connection terminal via a second connection line 92 .

[0416] For example, the indoor unit 100 may include a second mounting portion 76. The second mounting portion 76 is provided at an end of the display assembly 7 away from the fourth board 211. It should be noted that the second connecting line 92 passes through the second mounting portion 76.

[0417] In some embodiments, referring to Figure 64, the second mounting portion 76 is a wiring opening, and a fifth opening 761 is provided at the top of the cover body 73 and the fourth mounting portion 74. When the cover body 73 and the fourth mounting portion 74 are connected, the two fifth openings 761 jointly define the second mounting portion 76.

[0418] In some embodiments, the second mounting portion 76 is located at an end of the display assembly 7 away from the fourth board 211 , that is, the second mounting portion 76 is located at the top of the display assembly 7 .

[0419] For example, the first mounting portion 75 and the second mounting portion 76 are located at the top of the display assembly 7 , and the first mounting portion 75 and the second mounting portion 76 are spaced apart along the length direction of the housing 1 .

[0420] In some embodiments, referring to FIG. 65 , the side of the electric control box 6 away from the display assembly 7 is the first side, a guide portion 62 is provided on the first side, and one end of the first connecting line 91 passes through the guide portion 62 and is coupled to the first controller.

[0421] In some embodiments, a wire harness assembly 61 is provided on the side surface of the electric control box 6 away from the fourth plate 211 , ie, the top surface and the first side surface. The wire harness assembly 61 is configured to clamp the first connecting wire 91 .

[0422] In some embodiments, referring to Figure 66, the first connecting line coming out of the guide portion 62 is routed along the first side surface and the side surface, i.e., the top surface, of the top of the electric control box 6, and passes through the first mounting portion 75 at the top of the display component 7 to connect with the second controller 71.

[0423] The cable harness assembly 61 includes a fixing portion. The fixing portion has an opening facing the housing 1 to facilitate clamping the first connecting wire 91. It should be noted that the cable harness assembly 61 can be a cable clamp.

[0424] 64 , in order to install the second controller 71 , a third installation portion 743 is provided on the fourth installation portion 74 . The third installation portion 743 has an opening facing the cover 73 , and the second controller 71 is installed in the third installation portion 743 .

[0425] For example, referring to FIG. 64 , a sixth opening 7431 (through opening) is provided at a position of the third mounting portion 743 opposite to the first mounting portion 75 and the second mounting portion 76 . The sixth opening 7431 is configured for wiring and has a simple structure.

[0426] In some embodiments, the connection line of the microphone 5 can wrap around part of the third mounting portion 743 and then pass through the sixth opening 7431 to connect to the terminal. This avoids crossing the second controller 71 and can improve the neatness of the connection lines inside the display assembly 7.

[0427] 67 and 68 , in some embodiments, the speaker 8 includes a housing 81. The housing 81 includes a cavity therein.

[0428] The speaker 8 includes a speaker body. The speaker body is disposed in the inner cavity of the housing 81. It should be noted that the speaker body is coupled to the second controller 71 via a second connecting line 92.

[0429] In some embodiments, referring to FIG. 68 , the side surface of the housing 81 has a seventh opening 82 , and the seventh opening 82 is provided for the second connecting line 92 to pass through.

[0430] It should be noted that the first controller and the second controller 71 can be the same controller. It should be noted that any one of the technical solutions disclosed in this disclosure can, to a certain extent, solve one or more of the above-mentioned technical problems and achieve certain invention 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 invention purposes; it is also possible to select some of the technical disclosures and combine them into an overall solution, while adopting related technologies and degraded solutions, but being able to compensate for the degraded trend through the means disclosed in this technology, and overall solving one or more of the above-mentioned technical problems and achieving certain invention purposes; each technical disclosure combined into a complete technical solution constitutes an organic and inseparable overall solution, which solves the technical problems and achieves certain invention purposes as a whole.

[0431] 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 the invention. 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.

[0432] Those skilled in the art will understand that the scope of the present invention 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: A housing comprising a first cavity and a second cavity, the first cavity and the second cavity being arranged along a width direction of the housing, the housing comprising a first air inlet and a first air outlet, the first air inlet being in communication with the first cavity, and the first air outlet being in communication with the second cavity; a heat exchanger disposed in the second chamber and configured to perform heat exchange with air entering the second chamber; A volute is provided in the first cavity, and the volute includes: first ontology; at least one first plate connected to the first body; a second air inlet, located on the first plate and communicating with the first cavity; and a second air outlet, located in the first body and communicating with the second air inlet, and the second air outlet is communicated with the second cavity; a fan, comprising a wind wheel, the wind wheel being disposed in the first body, the wind wheel rotating to drive air from the first air inlet through the volute into the second cavity, and then flowing out from the first air outlet after heat exchange in the heat exchanger; a first flow-guiding structure, provided on a surface of the first plate close to the wind wheel, the first flow-guiding structure surrounding the second air inlet, the first flow-guiding structure comprising a plurality of first flow-guiding ribs, the plurality of first flow-guiding ribs being spaced apart and arranged along a surrounding direction of the first flow-guiding structure; The second guide structure is arranged on the surface of the first plate close to the wind wheel. The second guide structure surrounds the second air inlet and is closer to the second air inlet than the first guide structure. The second guide structure includes a plurality of second guide ribs. The plurality of second guide ribs are arranged at intervals along the surrounding direction of the second guide structure, and the plurality of first guide ribs and the plurality of second guide ribs are staggered with each other.

2. The air conditioner according to claim 1, wherein The volute further comprises: The air guide portion is located around the second air inlet. In the axial direction of the wind wheel, the height of the air guide portion is greater than the height of either the first guide rib or the second guide rib.

3. The air conditioner according to claim 1 or 2, wherein: The wind wheel includes a second body and a plurality of blades, wherein the plurality of blades are arranged at intervals on the outer circumference of the second body; In the radial direction of the wind wheel, the outer diameter of the first flow-guiding structure is greater than or equal to the outer diameter of any blade among the plurality of blades.

4. The air conditioner according to claim 3, wherein: In the radial direction of the wind wheel, the outer diameter of the second flow-guiding structure is greater than or equal to the inner diameter of any blade among the plurality of blades.

5. The air conditioner according to any one of claims 1 to 4, wherein: The distance between two ends of two adjacent first guide ribs among the plurality of first guide ribs is greater than or equal to 10 mm.

6. The air conditioner according to any one of claims 1 to 5, which satisfies one of the following conditions: In the radial direction of the wind rotor, the thickness of the first guide rib is A1, and in the axial direction of the wind rotor, the thickness of the first plate is A2, and A1 and A2 satisfy the relationship: 0.6≤A1 / A2≤0.8; and In the radial direction of the wind wheel, the thickness of the second guide rib is A3, and A3 and A2 satisfy the relationship: 0.6≤A3 / A2≤0.

8. 7 . The air conditioner according to claim 1 , wherein the centers of the first flow guiding structure and the second flow guiding structure coincide with the axis of the wind wheel.

8. The air conditioner according to any one of claims 1 to 7, wherein: The plurality of first guide ribs are spaced apart along a first circumferential direction, the plurality of second guide ribs are spaced apart along a second circumferential direction, and the first circumference and the second circumference are coaxially arranged.

9. The air conditioner according to any one of claims 1 to 8, wherein: In the radial direction of the wind wheel, at least one of the plurality of second guide ribs and two adjacent first guide ribs among the plurality of first guide ribs have an overlapping area.

10. An air conditioner comprising Outdoor unit; as well as An indoor unit, connected to the outdoor unit, and comprising: Chassis, including: a first cavity and a second cavity, wherein the first cavity and the second cavity are arranged along a width direction of the housing; a first air inlet and a first air outlet, wherein the first air inlet is connected to the first cavity, and the first air outlet is connected to the second cavity; a heat exchanger disposed in the second chamber and configured to perform heat exchange with air entering the second chamber; A volute is provided in the first cavity, and the volute includes: first ontology; at least one first plate connected to the first body; the at least one first plate includes two first plates, the two first plates are respectively located at two ends of the first body; and a second plate, the second plate being located between the two first plates, the second plate, the two first plates, and the first body jointly defining the second air outlet; a channel, wherein the second air outlet is connected to the second air inlet to form the channel; a wind wheel disposed in the channel, the wind wheel rotates to drive air from the first air inlet through the volute into the second cavity, and then flows out from the first air outlet after heat exchange in the heat exchanger; and At least one third guide structure is arranged on the surface of the first plate close to the wind wheel, at least part of the third guide structure surrounds the second air inlet, and a gap is set between the third guide structure and the side wall of the second air inlet, and the two ends of one of the at least one third guide structure extend to the second air outlet respectively, and the first end of the third guide structure is spaced apart from the second end of the third guide structure.

11. The air conditioner according to claim 10, wherein The volute further comprises: a volute tongue connected to the first body; The shape of the third flow-guiding structure matches the shape of the volute profile of the volute, so that at least a portion of the third flow-guiding structure corresponds to the volute tongue to form a sub-flow-guiding structure; In the radial direction of the wind wheel, the first gap between the volute tongue and the outer wall of the wind wheel is T1, and the second gap between the sub-guide structure and the outer wall of the wind wheel is T2, and T1 and T2 satisfy the relationship: T2<T1.

12. The air conditioner according to claim 10 or 11, wherein: The volute further comprises: The wind guide portion is located around the second air inlet, and in the axial direction of the wind wheel, the height of the wind guide portion is greater than the height of the third guide structure.

13. The air conditioner according to any one of claims 10 to 12, wherein: In the radial direction of the wind wheel, the outer diameter from the center of the wind wheel to the third flow guide structure is greater than or equal to the outer diameter of the wind wheel.

14. The air conditioner according to any one of claims 10 to 13, wherein: In the radial direction of the wind wheel, the thickness of the third guide structure is A4, and in the axial direction of the wind wheel, the thickness of the first plate is A2. A4 and A2 satisfy the relationship: 0.6≤A4 / A2≤0.

8.

15. The air conditioner according to any one of claims 10 to 14, wherein: The volute also includes at least one fourth flow guide structure, which is located on the side of the first plate close to the wind wheel. The fourth flow guide structure extends in the direction of the second air outlet pointing to the second air inlet, and is spaced apart from the third flow guide structure.

16. The air conditioner according to claim 15, wherein The at least one third flow guiding structure includes two third flow guiding structures, and any one of the two third flow guiding structures includes two the first diversion section; The fourth flow guiding structure includes a second flow guiding section; The included angle between one of the two first guide sections and the second guide section is β1, the included angle between the other of the two first guide sections and the second guide section is β2, the difference between β1 and β2 is β, and β satisfies the relationship: |β|<1°.

17. The air conditioner according to claim 16, wherein The length of the second guide section is L1, and the length from the intersection of the extension line of the second plate close to the end of the volute tongue and the extension line of the fourth guide structure to the second air outlet 312 is L2. L1 and L2 satisfy the relationship: L1≥L2.

18. The air conditioner according to claim 17, wherein The ratio of L1 to L2 is any value between 1 and 1.

5.

19. The air conditioner according to any one of claims 10 to 18, wherein: The thickness of each part of the third flow-guiding structure is substantially equal.

20. The air conditioner according to any one of claims 10 to 19, wherein: The two first plates are respectively located at two ends of the first body; the at least one third flow guide structure includes a plurality of third flow guide structures, and the plurality of third flow guide structures are respectively arranged on surfaces of the two first plates close to the wind wheel.

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