Air conditioner

Abstract

An air conditioner (100), comprising a housing (70), a fan assembly (80) and a heat exchanger (33), wherein the heat exchanger (33) and the fan assembly (80) are sequentially arranged in a first direction, and the heat exchanger (33) comprises at least one refrigerant pipe (331) and a plurality of fins (332); and the plurality of fins (332) are arranged at intervals in a second direction, and the refrigerant pipe (331) penetrates the plurality of fins (332) in the second direction and is connected to the plurality of fins (332). Each of the plurality of fins (332) is an integrated piece and comprises at least four connecting pieces (3320), two of the at least four connecting pieces (3320) are sequentially connected, an included angle is formed between any two adjacent ones of the at least four connecting pieces (3320), and opening directions of two of the included angles of the at least four connecting pieces (3320) are opposite, each included angle being greater than 0 degree and less than 180 degrees, and the first direction being perpendicular to the second direction.

Description

air conditioner

[0001] This application claims priority to Chinese patent application No. 202322521825.5 filed on September 15, 2023; priority to Chinese patent application No. 202322464817.1 filed on September 11, 2023; priority to Chinese patent application No. 202322457114.6 filed on September 11, 2023; priority to Chinese patent application No. 202310695786.2 filed on June 12, 2023, 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 technological advancements and improved living standards, air conditioners have become a common necessity in our daily lives. In winter, when outdoor temperatures are low, air conditioners can operate in heating mode to provide indoor warmth. However, due to the low outdoor temperatures in winter, frost can form on the outdoor side of the air conditioner after prolonged operation in heating mode.

[0004] Summary of the Invention

[0005] An air conditioner is provided, comprising a housing, a fan assembly and a heat exchanger. The fan assembly is disposed in the housing and is configured to drive air to flow through the heat exchanger. The heat exchanger is disposed in the housing and is located on the air outlet side of the fan assembly. The heat exchanger and the fan assembly are arranged in sequence along a first direction, and the heat exchanger comprises at least one refrigerant tube and a plurality of fins. The plurality of fins are arranged at intervals along a second direction, and the refrigerant tube passes through the plurality of fins along the second direction and is connected to the plurality of fins. Each of the plurality of fins is an integral part and comprises at least four connecting plates, two of the at least four connecting plates are connected in sequence, and any two adjacent connecting plates of the at least four connecting plates have an angle therebetween, and the opening directions of two adjacent angles of the at least four connecting plates are opposite, the angle is greater than 0 degrees and less than 180 degrees, and the first direction is perpendicular to the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG1 is a cross-sectional view of an indoor unit of an air conditioner in the related art;

[0007] FIG2 is a cross-sectional view of an indoor unit of another air conditioner in the related art;

[0008] FIG3 is a side view of a heat exchanger in the related art;

[0009] FIG4 is a structural diagram of an air conditioner according to some embodiments;

[0010] FIG5 is a structural diagram of another air conditioner according to some embodiments;

[0011] FIG6 is a structural diagram of another air conditioner according to some embodiments;

[0012] FIG7 is a structural diagram of the indoor heat exchanger or the outdoor heat exchanger shown in FIG4 ;

[0013] FIG8 is a top view of an outdoor unit according to some embodiments;

[0014] FIG9 is a side view of an indoor unit according to some embodiments;

[0015] FIG10 is a perspective view of the heat exchanger in FIG9 ;

[0016] FIG11 is a structural diagram of a fin according to some embodiments;

[0017] FIG12 is a structural diagram of another fin according to some embodiments;

[0018] FIG13 is a structural diagram of another fin according to some embodiments;

[0019] FIG14 is a structural diagram of a plurality of fins according to some embodiments;

[0020] FIG15 is a structural diagram of another fin according to some embodiments;

[0021] FIG16 is a wind field simulation diagram according to some embodiments;

[0022] FIG17 is a schematic diagram of a wind farm according to some embodiments;

[0023] FIG18 is a structural diagram of another fin according to some embodiments;

[0024] FIG19 is a structural diagram of another fin according to some embodiments;

[0025] FIG20 is a partial enlarged view of circle A in FIG19;

[0026] FIG21 is a simulation diagram of another wind farm according to some embodiments;

[0027] FIG22 is a perspective view of another indoor unit according to some embodiments;

[0028] FIG23 is a cross-sectional view of another indoor unit according to some embodiments;

[0029] FIG24 is a top view of another indoor unit according to some embodiments;

[0030] FIG25 is a structural diagram of an indoor heat exchanger and piping assembly according to some embodiments;

[0031] FIG26 is another structural diagram of an indoor heat exchanger and piping assembly according to some embodiments;

[0032] FIG27 is another structural diagram of an indoor heat exchanger and piping assembly according to some embodiments;

[0033] FIG28 is a block diagram of a pipeline assembly according to some embodiments;

[0034] FIG29 is another structural diagram of a pipeline assembly according to some embodiments;

[0035] FIG30 is a diagram comparing air volumes according to some embodiments;

[0036] FIG31 is a structural diagram of another indoor unit according to some embodiments;

[0037] FIG32 is a cross-sectional view of yet another indoor unit according to some embodiments;

[0038] FIG33 is another cross-sectional view of yet another indoor unit according to some embodiments;

[0039] FIG34 is a bar graph showing a comparison of noise levels at the same air volume according to some embodiments;

[0040] FIG35 is another cross-sectional view of another indoor unit according to some embodiments;

[0041] FIG36 is a structural diagram of a separator according to some embodiments;

[0042] FIG37 is a structural diagram of another indoor unit according to some embodiments;

[0043] FIG38 is a cross-sectional view of yet another indoor unit according to some embodiments;

[0044] FIG39 is another structural diagram of yet another indoor unit according to some embodiments;

[0045] FIG40 is a structural diagram of a volute according to some embodiments;

[0046] FIG41 is an exploded view of a volute and a drive shaft according to some embodiments;

[0047] FIG42 is a structural diagram of a first volute according to some embodiments;

[0048] FIG43 is a structural diagram of a second volute according to some embodiments;

[0049] FIG44 is a structural diagram of a volute at another angle according to some embodiments;

[0050] FIG45 is a perspective view of a third support portion according to some embodiments;

[0051] FIG46 is another perspective view of a third support portion according to some embodiments;

[0052] 47 is an exploded view of the first volute and the support ring, according to some embodiments. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe some embodiments of the present disclosure in conjunction with the accompanying drawings. However, the described embodiments are only some embodiments of the present disclosure, not 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] “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.

[0058] 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.

[0059] 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).

[0060] Typically, the fins included in an air conditioner's indoor heat exchanger are rectangular. Because the air delivered by the indoor fan is often non-uniform, and to reduce the indoor unit's footprint and increase heat flux, some indoor units (e.g., those of ducted air conditioners) incorporate multiple heat exchangers into a V-, Z-, or W-shaped heat exchanger assembly. This heat exchanger assembly is referred to as a folded heat exchanger. For example, a V-shaped heat exchanger is a single-fold heat exchanger, while a W-shaped heat exchanger is a multi-fold heat exchanger.

[0061] However, pleated heat exchangers have gaps at their joints and splicing plates for connecting adjacent heat exchangers. For example, a W-shaped, multi-pleated heat exchanger has at least three joints. On the one hand, the gaps at the joints prevent refrigerant pipes from being installed, reducing the heat exchange efficiency between the heat exchanger and the air. On the other hand, the assembly and installation steps of pleated heat exchangers are cumbersome.

[0062] Figure 1 is a cross-sectional view of an indoor unit of an air conditioner in the related art. For example, as shown in Figure 1, indoor unit 111 includes a housing 112, a centrifugal fan 113, and a heat exchanger 114. The fins included in heat exchanger 114 are generally rectangular structures of equal width. For example, heat exchanger 114 is a flat plate heat exchanger. Within housing 112, one side of heat exchanger 114 faces the air outlet of centrifugal fan 113, and heat exchanger 114 is arranged at an angle in a second direction X to accommodate a larger heat exchanger within housing 112.

[0063] FIG2 is a cross-sectional view of an indoor unit of another air conditioner in the related art. For example, as shown in FIG2 , the heat exchanger 114 in FIG1 can be replaced with a heat exchanger 115. The heat exchanger 115 can be a single-fold heat exchanger with a V-shaped structure, and the heat exchanger 115 can be regarded as being composed of two heat exchangers 114 spliced ​​together. The heat exchanger 115 is located in the housing 112 and is arranged near the air outlet of the centrifugal fan 113. The first opening B1 formed by the heat exchanger 115 faces the air outlet of the centrifugal fan 113 to increase the heat exchange area of ​​the heat exchanger 115.

[0064] Figure 3 is a side view of a heat exchanger in the related art. For another example, heat exchanger 115 in Figure 2 can be replaced with heat exchanger 116. Heat exchanger 116 can be a W-shaped, multi-fold heat exchanger, and can be considered to be composed of four heat exchangers 114 joined together, or two heat exchangers 115 joined together. The second opening B2 and third opening B3 of heat exchanger 116 face the air outlet of centrifugal fan 113, thereby increasing the heat exchange area of ​​heat exchanger 116.

[0065] However, the refrigerant pipe cannot be installed at the joint of the heat exchanger 115 and the heat exchanger 116, which reduces the heat exchange efficiency and makes the assembly process complicated.

[0066] In order to solve the above problems, some embodiments of the present disclosure provide an air conditioner 100, which includes a heat exchanger, and the fins of the heat exchanger are an integrated part. The fins include multiple connecting plates, and the multiple connecting plates are connected in sequence along a third direction Y (up and down direction). In this way, the heat exchanger has better integrity, and more mounting holes can be set on the fins to pass through more refrigerant pipes, thereby increasing the heat exchange area of ​​the heat exchanger and improving the heat exchange efficiency of the air conditioner.

[0067] Figure 4 is a structural diagram of an air conditioner according to some embodiments. As shown in Figure 4, the air conditioner 100 includes an indoor unit 101 and an outdoor unit 102. The indoor unit 101 includes a heat exchanger 33, which is the indoor heat exchanger 32. The outdoor unit 102 includes a compressor 1001, a four-way valve 20, a heat exchanger 33, and a throttle device 48, which is the outdoor heat exchanger 31. The compressor 1001 includes a return air port 601 and an exhaust port 602. The four-way valve 20 includes a first port A, a second port B, a third port C, and a fourth port D. The return air port 601 is connected to the first port A, and the exhaust port 602 is connected to the second port B. The third port C is connected to one end of the outdoor heat exchanger 31. The other end of the outdoor heat exchanger 31 is connected to one end of the indoor heat exchanger 32 via the throttle device 48. The other end of the indoor heat exchanger 32 is connected to the fourth port D.

[0068] The throttling device 48 may be a pressure reducer or an electronic expansion valve. It should be noted that FIG4 illustrates an example in which the throttling device 48 is disposed in the outdoor unit 102. Of course, the throttling device 48 may also be disposed in the indoor unit 101, or in the refrigerant pipeline between the outdoor unit 101 and the indoor unit 102. This disclosure does not limit this.

[0069] The refrigerant circulates between the indoor unit 101 and the outdoor unit 102, undergoing a reversible phase change, thereby releasing or absorbing heat. For example, in the outdoor unit 102, the refrigerant exchanges heat with the air through the outdoor heat exchanger 31, releasing heat to heat the air or absorbing heat to cool the air. Alternatively, in the indoor unit 101, the refrigerant exchanges heat with the air through the indoor heat exchanger 32, releasing heat to heat the air or absorbing heat to cool the air.

[0070] In some embodiments, the outdoor heat exchanger 31 is an air-to-liquid heat exchanger. For example, the outdoor heat exchanger 31 is a finned heat exchanger or a microchannel heat exchanger. In this case, a fast-flowing medium such as air or coolant can exchange heat with the refrigerant flowing through the outdoor heat exchanger 31. Alternatively, the outdoor heat exchanger 31 can be a liquid-to-liquid heat exchanger, such as a shell-and-tube heat exchanger or a plate heat exchanger. In this case, a fast-flowing liquid medium can exchange heat with the refrigerant flowing through the outdoor heat exchanger 31. For example, liquid refrigerant exchanges heat with the nearby air at the indoor heat exchanger 32, becoming a gaseous refrigerant and absorbing heat from the air. This heat exchange process is called a primary heat exchange process. The gaseous refrigerant enters the outdoor heat exchanger 31 and exchanges heat with the coolant (e.g., liquid water) in the outdoor heat exchanger 31. The liquid water exchanges heat with the gaseous refrigerant and absorbs heat from the gaseous refrigerant, turning the gaseous refrigerant into a liquid refrigerant. This heat exchange process is called a secondary heat exchange process. The indoor heat exchanger 32 and the outdoor heat exchanger 31 are connected via a heat exchange path corresponding to this secondary heat exchange process, so that the cold energy evaporated from the liquid refrigerant in the outdoor heat exchanger 31 is transferred to the indoor heat exchanger 32, cooling the air near the indoor heat exchanger 32.

[0071] When the air conditioner 100 is operating in cooling mode or dehumidification mode, the outdoor heat exchanger 31 functions as a condenser, and the indoor heat exchanger 32 functions as an evaporator. The indoor heat exchanger 32 cools the surrounding air. If the installation positions of the indoor heat exchanger 32 and the outdoor heat exchanger 31 are swapped, for example, with the indoor heat exchanger 32 functioning as a condenser and the outdoor heat exchanger 31 functioning as an evaporator, the indoor heat exchanger 32 can heat the surrounding air. In this case, the air conditioner 100 is operating in heating mode. It should be noted that the operating mode of the air conditioner 100 can be adjusted by adjusting the four-way valve 20.

[0072] For example, when the air conditioner 100 is in cooling mode or dehumidification mode, as shown in the solid arrows in FIG. 4 , the four-way valve 20 is adjusted to connect the second port B and the third port C, and to connect the fourth port D and the first port A. In this way, the refrigerant can circulate among the compressor 1001, the second port B, the third port C, the outdoor heat exchanger 31, the throttling device 48, the indoor heat exchanger 32, the fourth port D, the first port A, and the compressor 1001. During this process, the high-pressure gaseous refrigerant compressed by the compressor 1001 can be discharged from the exhaust port 602 and flow through the four-way valve 20 to the outdoor heat exchanger 31, so that the high-temperature and high-pressure gaseous refrigerant can be liquefied in the outdoor heat exchanger 31 and release heat, thereby heating the air near the outdoor heat exchanger 31. The liquid refrigerant then flows into the indoor heat exchanger 32 through the throttling device 48. The throttling device 48 reduces the pressure of the liquid refrigerant flowing into the indoor heat exchanger 32, allowing the liquid refrigerant to absorb heat and vaporize in the indoor heat exchanger 32, thereby cooling the air near the indoor heat exchanger 32. The vaporized refrigerant then enters the return air port 601 of the compressor 1001 through the four-way valve 20, thereby achieving a circulating flow of the refrigerant.

[0073] When the air conditioner 100 is in heating mode, as shown by the dashed arrows in FIG. 4 , the four-way valve 20 is adjusted to connect the second port B and the fourth port D, and to connect the third port C and the first port A. This allows the refrigerant to circulate between the compressor 1001, the second port B, the fourth port D, the indoor heat exchanger 32, the throttle device 48, the outdoor heat exchanger 31, the third port C, the first port A, and the compressor 1001. During this process, the high-temperature, high-pressure gaseous refrigerant compressed by the compressor 1001 flows through the four-way valve 20 to the indoor heat exchanger 32. The high-temperature, high-pressure gaseous refrigerant liquefies and releases heat there, thereby heating the air near the indoor heat exchanger 32. The liquid refrigerant then flows through the throttle device 48 to the outdoor heat exchanger 31. The throttle device 48 reduces the pressure of the liquid refrigerant flowing into the outdoor heat exchanger 31, allowing it to absorb heat and vaporize there, thereby cooling the air surrounding the outdoor heat exchanger 31. The vaporized refrigerant can be sucked into the return air port 601 of the compressor 1001 through the four-way valve 20, thereby realizing the circulation flow of the refrigerant.

[0074] FIG5 is a block diagram of another air conditioner according to some embodiments. In some embodiments, as shown in FIG5 , the air conditioner 100 further includes a gas-liquid separator 550. The gas-liquid separator 550 is disposed between the first port A and the return air port 601 so that the first port A can be connected and communicated with the return air port 601 through the gas-liquid separator 550. In this way, when the gaseous refrigerant flows toward the return air port 601 through the gas-liquid separator 550, the gas-liquid separator 550 can separate non-gaseous impurities (such as liquid refrigerant, liquid lubricating oil, or other impurities), thereby preventing the above-mentioned impurities from entering the compressor 1001, thereby affecting the stable operation of the compressor 1001.

[0075] In some embodiments, as shown in FIG5 , the air conditioner 100 further includes a first diverter 600 . The exhaust port 602 is connected and communicated with the second port B via the first diverter 600 . In this manner, the lubricating oil contained in the high-temperature, high-pressure gaseous refrigerant can be separated during passage through the first diverter 600 , thereby preventing the lubricating oil from adhering to the inner walls of the outdoor heat exchanger 31 and the indoor heat exchanger 32 as the refrigerant flows through the two, thereby reducing the heat exchange efficiency of the indoor heat exchanger 32 and the outdoor heat exchanger 31.

[0076] The above description mainly uses the example of an air conditioner 100 including a four-way valve 20. Of course, in some embodiments, the four-way valve 20 can also be omitted. Figure 6 is a structural diagram of another air conditioner according to some embodiments. For example, as shown in Figure 6, taking the compressor 1001 as an oil-free compressor, the exhaust port 602 is connected to the outdoor heat exchanger 31, the return air port 601 is connected to the indoor heat exchanger 32 via the gas-liquid separator 550, and the indoor heat exchanger 32 and the outdoor heat exchanger 31 are connected via the throttling device 48. In this way, the refrigerant can circulate between the compressor 1001, the outdoor heat exchanger 31, the throttling device 48, the indoor heat exchanger 32, the gas-liquid separator 550, and the compressor 1001. In this case, the outdoor heat exchanger 31 can heat the air near the outdoor heat exchanger 31, and the indoor heat exchanger 32 can cool the air near the indoor heat exchanger 32, so that the air conditioner 100 operates in cooling mode or dehumidification mode. In addition, the gas-liquid separator 550 is arranged between the indoor heat exchanger 32 and the compressor 1001, which can prevent the liquid refrigerant from directly entering the compressor 1001 from the indoor heat exchanger 32, thereby improving the stability of the continuous operation of the compressor 1001.

[0077] Figure 7 is a structural diagram of the indoor heat exchanger or outdoor heat exchanger shown in Figure 4. In some embodiments, as shown in Figure 7, the air conditioner 100 further includes a second flow divider 34 and a gas collecting pipe 351. Along the refrigerant flow direction, the second flow divider 34 and the gas collecting pipe 351 are respectively disposed on opposite sides of the heat exchanger 33. The gas collecting pipe 351 is connected to the four-way valve 20 or communicates with the exhaust port 602.

[0078] FIG8 is a top view of an outdoor unit according to some embodiments. In some embodiments, as shown in FIG8 , the outdoor unit 102 further includes a housing 70 and a fan assembly 80, with the heat exchanger 33 and the fan assembly 80 respectively disposed within the housing 70. In this case, the heat exchanger 33 is the outdoor heat exchanger 31. When the fan assembly 80 is powered on and rotated, the fan assembly 80 can drive air to flow through the outdoor heat exchanger 31, so that the flowing air can exchange heat with the refrigerant through the outdoor heat exchanger 31. The fan assembly 80 can be a centrifugal fan or an axial flow fan, so that the fan assembly 80 drives the air near the outdoor unit 102 to continuously flow to the outdoor heat exchanger 31.

[0079] In some embodiments, a multi-way parallel connection can be used to increase the flow rate of the refrigerant in the heat exchanger 33 per unit time and increase the contact area between the refrigerant and the air. For example, the heat exchanger 33 includes multiple refrigerant pipes arranged in parallel.

[0080] The following description uses the example of air conditioner 100 in heating mode, with heat exchanger 33 being outdoor heat exchanger 31. One end of multiple refrigerant pipes arranged in parallel can be connected to one end of second flow divider 34, and the other ends of these multiple refrigerant pipes can be connected to one end of manifold 351. The other end of second flow divider 34 can be connected to throttling device 48, or the other end of second flow divider 34 can be directly connected to indoor heat exchanger 32. The other end of manifold 351 can be connected to third port C of four-way valve 20. Gaseous refrigerant and liquid refrigerant are mixed by second flow divider 34 and then divided into multiple refrigerant pipes. After evaporating and absorbing heat through the multiple refrigerant pipes, the refrigerant converges in manifold 351 and flows into compressor 1001 through third port C of four-way valve 20. The second diverter 34 can improve the flow rate of the refrigerant in the heat exchanger 33, maintain the pressure drop of the refrigerant within a certain range, and improve the uniformity of the distribution of the gas-liquid two-phase refrigerant in the heat exchanger 33, which is beneficial to improving the heat exchange efficiency of the refrigerant.

[0081] FIG9 is a side view of an indoor unit according to some embodiments. In some embodiments, as shown in FIG9 , the indoor unit 101 may also include a housing 70 . In this case, the heat exchanger 33 is the indoor heat exchanger 32 . The indoor heat exchanger 32 and the fan assembly 80 are respectively located within the housing 70 , and the heat exchanger 33 and the fan assembly 80 are spaced apart along a first direction Z (front-to-back direction). The fan assembly 80 may be a cross-flow fan, a diagonal flow fan, a centrifugal fan, or an axial flow fan. Taking a suspended duct-type indoor unit as an example, the fan assembly 80 may be a centrifugal fan, with the air outlet of the fan assembly 80 facing the indoor heat exchanger 32 , so that the fan assembly 80 can drive air near the indoor unit 102 to continuously flow through the indoor heat exchanger 32, and the refrigerant flowing within the indoor heat exchanger 32 heats or cools the air flowing through the indoor heat exchanger 32.

[0082] It should be noted that, in order to distinguish the heat exchangers in the related art from those in the present disclosure, the heat exchangers in the related art are numbered 114, 115, and 116, the indoor unit is numbered 111, and the housing is numbered 112. In the present disclosure, the heat exchanger is numbered 33, the indoor unit is numbered 101, and the housing is numbered 70. The heat exchanger 33 provided in some embodiments of the present disclosure is described in detail below.

[0083] Figure 10 is a stereoscopic view of the heat exchanger in Figure 9. In some embodiments, as shown in Figures 9 and 10, the heat exchanger 33 includes one or more refrigerant tubes 331 and a plurality of fins 332. The fin 332 includes a fin body 3340 and a plurality of mounting holes 333. The plurality of mounting holes 333 are respectively provided on the fin body 3340. The fin 332 can be in the shape of a sheet. The fin 332 is perpendicular to the second direction X (left-right direction), and the plurality of fins 332 are spaced apart along the second direction X so that a gap for air circulation can be formed between two adjacent fins 332. The second direction X can refer to the thickness direction of the fin 332. It should be noted that the position and number of the plurality of mounting holes 333 opened on each fin 332 can be the same. In this way, in the process of arranging the plurality of fins 332 at intervals along the second direction X, the plurality of mounting holes 333 on two adjacent fins 332 can be aligned, for example, the two adjacent fins 332 are arranged approximately in parallel.

[0084] The number of refrigerant tubes 331 can be the same as the number of multiple mounting holes 333 on a fin 332, and the multiple refrigerant tubes 331 and the multiple mounting holes 333 on a fin 332 are respectively arranged correspondingly. For example, a refrigerant tube 331 extends along the second direction X and sequentially passes through the multiple mounting holes 333 arranged in an aligned manner, so that the refrigerant tube 331 can be connected to each fin 332 through the mounting holes 333 (e.g., welded). In this way, when air flows through the heat exchanger 33 through the gap between two adjacent fins 332, the multiple fins 332 and the multiple refrigerant tubes 331 are respectively in continuous contact with the flowing air, which can increase the heat exchange area between the refrigerant tube 331 and the air, thereby improving the heat exchange efficiency between the refrigerant and the air in the refrigerant tube 331.

[0085] It should be noted that the refrigerant tube 331 can be a straight tube structure extending along the second direction X. After plugging in multiple refrigerant tubes 331, two refrigerant tubes 331 can be connected at the same end through a connecting elbow, so that the multiple refrigerant tubes 331 can be connected through multiple connecting elbows to form a refrigerant channel or multiple parallel refrigerant channels. Alternatively, the refrigerant tube 331 can also be a U-shaped tube structure, and the U-shaped tube includes two refrigerant tubes 331 and a connecting elbow. The connecting elbow connects the two refrigerant tubes 331.

[0086] It should be noted that when multiple refrigerant tubes 331 are connected to form a refrigerant channel, the refrigerant channel can be considered a channel formed by sequentially connecting multiple refrigerant tubes 331. Alternatively, the refrigerant channel can also be considered a bent refrigerant tube 331, wherein the multiple straight segments of the bent refrigerant tube 331 can respectively pass through multiple spaced fins 332 along the second direction X and be connected to the multiple fins 332. In some embodiments, at least a portion of the multiple refrigerant tubes 331 are connected and conductive, and multiple refrigerant heat exchange channels can be formed in the heat exchanger 33 to improve the refrigerant flow rate and heat exchange efficiency per unit time.

[0087] In addition, the refrigerant tube 331 can be made of a metal with good thermal conductivity (such as copper or aluminum) or a metal alloy material, so that the refrigerant flowing in the multiple refrigerant tubes 331 can quickly exchange heat with the air. The refrigerant tube 331 can be a long round tube structure. For example, the refrigerant tube 331 is a round metal tube such as a copper tube or an aluminum tube, and correspondingly, the mounting hole 333 is a circular through hole to pass the refrigerant tube 331, thereby facilitating the connection between the refrigerant tube 331 and the fin 332. Alternatively, the refrigerant tube 331 can also be a flat tube structure including a microchannel, and correspondingly, the mounting hole 333 can be a strip hole structure, or the mounting hole 333 can also be a slotted structure corresponding to the refrigerant tube 331, so that the refrigerant tube 331 can be passed through the mounting hole 333.

[0088] It should be noted that multiple refrigerant tubes 331 can be connected in series or in parallel. The longer the refrigerant tubes 331 connected in series, the longer the refrigerant path, the longer the air flow time, and the longer the time for heat exchange between the refrigerant and the air, thereby increasing the refrigerant heat exchange efficiency. The more refrigerant tubes 331 connected in parallel, the greater the refrigerant flow rate per unit time, and the greater the cooling power or heating power of the air conditioner 100.

[0089] FIG11 is a structural diagram of a fin according to some embodiments. In some embodiments, the fin 332 includes a plurality of connecting pieces 3320. For example, the plurality of connecting pieces 3320 includes at least four connecting pieces 3320, wherein two of the at least four connecting pieces 3320 are sequentially connected, and any two adjacent connecting pieces 3320 in the at least four connecting pieces 3320 have an angle between them. Adjacent two of the angles of the at least four connecting pieces 3320 open in opposite directions, and the angle is greater than 0 degrees and less than 180 degrees. For example, as shown in FIG11 , the fin 332 includes a first connecting piece 3321, a second connecting piece 3322, a third connecting piece 3323, and a fourth connecting piece 3324. The fourth connecting piece 3324, the third connecting piece 3323, the second connecting piece 3322, and the first connecting piece 3321 are sequentially connected along a third direction Y. The third direction Y may refer to the length of the fin 332. One end of the second connecting piece 3322 is connected to one end of the first connecting piece 3321. The extension direction of the first connecting piece 3321 intersects with the extension direction of the second connecting piece 3322, forming a first angle θ1. The first angle θ1 opens along the first direction Z. The first direction Z can refer to the height direction of the fin 332. The other end of the second connecting piece 3322 is connected to one end of the third connecting piece 3323. The extension direction of the second connecting piece 3322 intersects with the extension direction of the third connecting piece 3323, forming a second angle θ2. The second angle θ2 opens in the opposite direction of the first direction Z. The opening direction of the second angle θ2 is opposite to the opening direction of the first angle θ1. The other end of the third connecting piece 3323 is connected to one end of the fourth connecting piece 3324. The extension direction of the third connecting piece 3323 intersects with the extension direction of the fourth connecting piece 3324, forming a third angle θ3. The opening of the third angle θ3 is along the first direction Z, facing the fan assembly 80. The opening direction of the third angle θ3 is the same as the opening direction of the first angle θ1. In this way, the fin 332 is a W-shaped planar sheet structure, and the fin 332 is an integral part.

[0090] It should be noted that the first direction Z may be perpendicular to the second direction X and the third direction Y, and the second direction X and the third direction Y may intersect or be perpendicular.

[0091] In some embodiments of the present disclosure, the fins 332 include a first connecting piece 3321, a second connecting piece 3322, a third connecting piece 3323, and a fourth connecting piece 3324. In the second direction X, the fins 332 are W-shaped. Compared to a multi-fold heat exchanger formed by splicing multiple heat exchangers, the heat exchanger 33 only needs to be formed by the cooperation of multiple fins 332 and multiple refrigerant tubes 331, and each fin 332 is an integral part. The heat exchanger 33 has better integrity. More mounting holes 333 can be provided on the fins 332 to pass through more refrigerant tubes 331, thereby increasing the heat exchange area of ​​the heat exchanger 33 and improving the heat exchange efficiency of the air conditioner 100. In addition, the complicated steps in the splicing process of the multi-fold heat exchanger can be avoided.

[0092] It should be noted that the above description uses the example of an opening at the first angle θ1 and an opening at the third angle θ3, each oriented along the first direction Z toward the outlet side of the fan assembly 80. In this case, the heat exchanger 33 is considered to be installed in the forward direction. Of course, in some embodiments, the opening at the second angle θ2 may also be oriented along the first direction Z toward the outlet side of the fan assembly 80. In this case, the opening at the first angle θ1 and the opening at the third angle θ3 are each oriented along the first direction Z away from the outlet side of the fan assembly 80, and the heat exchanger 33 is considered to be installed in the reverse direction. This disclosure is not limited to this.

[0093] FIG12 illustrates another structural diagram of a fin according to some embodiments. In some embodiments, as shown in FIG12 , the fin 332 further includes a fifth connecting piece 3325, a sixth connecting piece 3326, and a seventh connecting piece 3327. Along the third direction Y, the fifth connecting piece 3325 is located between the first connecting piece 3321 and the second connecting piece 3322, and the first connecting piece 3321 and the second connecting piece 3322 are bent toward the same side of the fifth connecting piece 3325 along the first direction Z. The sixth connecting piece 3326 is located between the second connecting piece 3322 and the third connecting piece 3323, and the second connecting piece 3322 and the third connecting piece 3323 are bent toward the same side of the sixth connecting piece 3326 in the opposite direction of the first direction Z. The seventh connecting piece 3327 is located between the third connecting piece 3323 and the fourth connecting piece 3324, and the third connecting piece 3323 and the fourth connecting piece 3324 are bent toward the same side of the seventh connecting piece 3327 along the first direction Z.

[0094] By providing the fifth connecting piece 3325, the sixth connecting piece 3326 and the seventh connecting piece 3327, the transition between the first connecting piece 3321, the second connecting piece 3322, the third connecting piece 3323 and the fourth connecting piece 3324 can be relatively smooth, thereby avoiding the heat exchanger 33 from forming a pointed structure or a deeper angle structure, which is beneficial to reducing the wind noise of the heat exchanger 33 and reducing the burr structure on both sides of the fin 332 in the first direction Z.

[0095] FIG13 is a structural diagram of another fin according to some embodiments. In some embodiments, as shown in FIG13 , the fin 332 further includes a first edge 3328 and a second edge 3329. The first edge 3328 and the second edge 3329 are arranged along the first direction Z and are disposed opposite each other. Taking the forward-mounted heat exchanger 33 as an example, the first edge 3328 is the edge of the fin 332 on the side closest to the fan assembly 80 along the first direction Z. The edges of the first connecting piece 3321, the second connecting piece 3322, the third connecting piece 3323, the fourth connecting piece 3324, the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327 on the side closest to the fan assembly 80 along the first direction Z are each at least a portion of the first edge 3328. The second edge 3329 is the edge of the fin 332 on the side away from the fan assembly 80 along the first direction Z. The edges of the first connecting piece 3321 , the second connecting piece 3322 , the third connecting piece 3323 , the fourth connecting piece 3324 , the fifth connecting piece 3325 , the sixth connecting piece 3326 and the seventh connecting piece 3327 on the side away from the fan assembly 80 along the first direction Z are respectively at least a portion of the second edge 3329 .

[0096] In some embodiments, as shown in FIG13 , the first edge 3328 and the second edge 3329 have the same shape and size, and the first edge 3328 can overlap with the second edge 3329 after translation along the first direction Z. In this way, along the first direction Z, the width of each position of the fin 332 in the first direction Z is the same. For example, the first connecting piece 3321, the second connecting piece 3322, the third connecting piece 3323, the fourth connecting piece 3324, the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327 in the first direction Z are the same.

[0097] In some embodiments, as shown in FIG13 , the fin 332 further includes a third edge 33211 and a fourth edge 33212. The third edge 33211 and the fourth edge 33212 are arranged along the third direction Y and are disposed opposite each other. The third edge 33211 and the fourth edge 33212 are disposed in parallel and extend along the first direction Z. The third edge 33211 is the edge of the first connecting piece 3321 on the side away from the fifth connecting piece 3325, and the fourth edge 33212 is the edge of the fourth connecting piece 3324 on the side away from the seventh connecting piece 3327. The third edge 33211 and the fourth edge 33212 are respectively located between the first edge 3328 and the second edge 3329. The length of the third edge 33211 or the fourth edge 33212 in the first direction Z is the same as the width of the fin 332.

[0098] In some embodiments, as shown in FIG13 , the fin 332 further includes a transition portion 33280, which may be a chamfered or rounded structure. A portion of the first edge 3328 near the third edge 33211 is connected to the third edge 33211 via the transition portion 33280. For example, an end of the first edge 3328 near the third edge 33211 along the third direction Y is connected to the third edge 33211 via the transition portion 33280.

[0099] Accordingly, a portion of the first edge 3328 close to the fourth edge 33212 is connected to the fourth edge 33212 via the transition portion 33280. For example, one end of the first edge 3328 close to the fourth edge 33212 along the third direction Y is connected to the fourth edge 33212 via the transition portion 33280.

[0100] It should be noted that the transition portion 33280 may be a portion of the first edge 3328, so that the third edge 33211 and the fourth edge 33212 are respectively straight structures extending along the first direction Z. In addition, by providing the transition portion 33280, the tip structure on the first connecting piece 3321 and the fourth connecting piece 3324 can be reduced, thus preventing deformation of the tip of the fin 332 and also preventing burrs from being generated during stamping or shearing of the fin 332.

[0101] Correspondingly, one end of the second edge 3329 close to the third edge 33211 can be connected to the third edge 33211 through the transition portion 33280 , and one end of the second edge 3329 close to the fourth edge 33212 can be connected to the fourth edge 33212 through the transition portion 33280 .

[0102] In some embodiments, when the fin 332 includes a first connecting piece 3321, a second connecting piece 3322, a third connecting piece 3323, and a fourth connecting piece 3324 connected sequentially along the third direction Y, as shown in FIG11 , of the two edges of the first connecting piece 3321 and the second connecting piece 3322 in the first direction Z, the inner edge close to the first angle θ1 is a portion of the first edge 3328, and the outer edge away from the first angle θ1 is a portion of the second edge 3329. Of the two edges of the third connecting piece 3323 and the fourth connecting piece 3324 in the first direction Z, the inner edge close to the third angle θ3 is a portion of the first edge 3328, and the outer edge away from the third angle θ3 is a portion of the second edge 3329.

[0103] Here, the fin 332 may also include a third edge 33211 and a fourth edge 33212, and both ends of the first edge 3328 are connected to the third edge 33211 and the fourth edge 33212 via transition portions 33280. Correspondingly, both ends of the second edge 3329 are connected to the third edge 33211 and the fourth edge 33212 via transition portions 33280.

[0104] FIG14 is a structural diagram of multiple fins according to some embodiments, and the fins in FIG14 are fins 332 shown in FIG12 . In some embodiments, as shown in FIG14 , after the multiple fins 332 are sequentially arranged along a first direction Z, the first edges 3328 and second edges 3329 of two adjacent fins 332 overlap, forming a continuous sheet structure. Therefore, during the production of the fins 332, the fins 332 can be stamped or cut out from a sheet of raw material along the first direction Z. Because the first edges 3328 and second edges 3329 of two adjacent fins 332 overlap, additional waste can be avoided, facilitating the continuous production of the fins 332 and improving the utilization rate of the raw material.

[0105] Furthermore, the third edges 33211 of the fins 332 are aligned along the first direction Z, and the fourth edges 33212 of the fins 332 are aligned along the first direction Z. Therefore, if the sheet material is rectangular, the dimensions of the rectangular sheet material in the third direction Y can be set to be the same as the dimensions of the fins 332 in the third direction Y. In this way, along the first direction Z, except for the end portion at the beginning of processing and the tail portion at the end of processing, the continuous cutting of the fins 332 can avoid the generation of scrap that would affect processing equipment and improve the utilization rate of the raw material.

[0106] FIG15 is a structural diagram of another fin according to some embodiments. In some embodiments, as shown in FIG15 , a transition portion 33280 may be provided between two adjacent connecting pieces 3320 along the third direction Y. For example, as shown in FIG15 , the transition portion 33280 may be provided at one or more of the following locations: between the first connecting piece 3321 and the fifth connecting piece 3325; between the fifth connecting piece 3325 and the second connecting piece 3322; between the second connecting piece 3322 and the sixth connecting piece 3326; between the sixth connecting piece 3326 and the third connecting piece 3323; between the third connecting piece 3323 and the seventh connecting piece 3327; and between the seventh connecting piece 3327 and the fourth connecting piece 3324. This can reduce the sharp edge structure of the first edge 3328 between two adjacent connecting pieces 3320, avoid burrs generated during stamping or shearing of the fin 332, and prevent tip deformation of the fin 332.

[0107] When the fin 332 includes a first connecting piece 3321, a second connecting piece 3322, a third connecting piece 3323, and a fourth connecting piece 3324 connected in sequence along the third direction Y, the first edges 3328 between two adjacent connecting pieces 3320 along the first direction Z may also be connected by a transition portion 33280, thereby reducing the number of sharp edges or angles. For example, the transition portion 33280 may be provided at one or more locations among: between the first connecting piece 3321 and the second connecting piece 3322, between the second connecting piece 3322 and the third connecting piece 3323, and between the third connecting piece 3323 and the fourth connecting piece 3324.

[0108] In some embodiments, as shown in FIG15 , taking the fins 332 of a forward-mounted heat exchanger 33 as an example, the opening formed by the second connecting piece 3322 and the third connecting piece 3323 is located away from the outlet side of the fan assembly 80 along the first direction Z. Along the first direction Z, the edge 33250 of the fifth connecting piece 3325, which is away from the outlet side, can be aligned with the edge of the seventh connecting piece 3327, which is away from the outlet side, in the third direction Y. In this way, the second edge 3329 of the fifth connecting piece 3325 and the second edge 3329 of the seventh connecting piece 3327 are collinear along the third direction Y. Thus, during the production, transportation, and installation of the heat exchanger 33, the second edge 3329 of the fifth connecting piece 3325 and the second edge 3329 of the seventh connecting piece 3327 can be used as a reference line, and a support surface can be formed along this reference line on the multiple fins 332. When the multiple refrigerant tubes 331 are connected to the multiple fins 332, this support surface can be used to support the heat exchanger 33 without the need for additional support structures.

[0109] In some embodiments, as shown in FIG15 , the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327 are each approximately rectangular sheet-like structures with their central axes parallel to the first direction Z or the third direction Y. The edges of the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327 on the side closest to the fan assembly 80 are approximately parallel. Furthermore, the edges of the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327 on the side away from the fan assembly 80 are also approximately parallel. The first connecting piece 3321, the second connecting piece 3322, the third connecting piece 3323, and the fourth connecting piece 3324 can each be approximately diamond-shaped sheet-like structures.

[0110] In some embodiments, as shown in Figure 15, in the direction perpendicular to the corresponding first edge 3328 of a portion of the multiple connecting pieces 3320 (e.g., the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327), the widths of the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327 are respectively the first distance 4D, and in the direction perpendicular to the corresponding first edge 3328 of another portion of the multiple connecting pieces 3320 (e.g., the first connecting piece 3321, the second connecting piece 3322, the third connecting piece 3323, and the fourth connecting piece 3324), the width of the first connecting piece 3321 is the first width W1, the width of the second connecting piece 3322 is the second width W2, the width of the third connecting piece 3323 is the third width W3, and the width of the fourth connecting piece 3324 is the fourth width W4. The first width W1, the second width W2, the third width W3, and the fourth width W4 are identical, and are each less than or equal to the first distance 4D (W1 = W2 = W3 = W4 ≤ 4D). Thus, the seven connecting pieces 3320 are arranged in a staggered pattern perpendicular to the first edge 3328. This facilitates gradual adjustment of the resistance of the heat exchanger 33 in the air flow path, thereby improving the uniformity of the wind field on the surface of the heat exchanger 33 and enhancing the heat exchange efficiency of the heat exchanger 33.

[0111] In some embodiments, as shown in FIG15 , the fin 332 further includes at least one group of mounting holes 3330. The at least one group of mounting holes 3330 is disposed on the connecting piece 3320 and extends through the fin 332 along its thickness. Any one of the at least one group of mounting holes 3330 includes a plurality of mounting holes 333, and a line connecting the centers of the mounting holes 333 can be parallel to the first edge 3328 or the second edge 3329, respectively. The mounting holes 333 in each group of mounting holes 333 can be spaced apart on the fin 332 along the direction extending from the first edge 3328 or the second edge 3329, and two or more mounting holes 333 on any two of the plurality of fins 332 are aligned along the second direction X. For example, as shown in FIG15 , the fin 332 is provided with a first group of mounting holes 3331 and a second group of mounting holes 3332. The first group of mounting holes 3331 is located near the first edge 3328, and a line connecting the centers of the plurality of mounting holes 332 in the first group of mounting holes 3331 is parallel to the first edge 3328. The second group of mounting holes 3332 is located near the second edge 3329, and a line connecting the centers of the plurality of mounting holes 332 in the second group of mounting holes 3332 is parallel to the first edge 3328. The second group of mounting holes 3332 and the first group of mounting holes 3331 are sequentially spaced apart along the first direction Z. Of course, the fin 332 may also be provided with one, three, or more groups of mounting holes 333, and this disclosure is not limited thereto.

[0112] In some embodiments, the set of mounting holes 3330 may include a preset number of mounting holes 333 to ensure that the heat exchanger 33 has a good heat exchange efficiency, cooling power, and heating power. For example, the preset number is any value between 10 and 18. For example, the set of mounting holes 3330 may include 10 mounting holes 333, 14 mounting holes 333, or 18 mounting holes 333. In addition, the preset number can be adjusted based on the diameter of the mounting holes 333 and the diameter of the refrigerant pipe 331.

[0113] For example, if the outer diameter of the refrigerant tube 331 and the inner diameter of the mounting hole 333 are both 7 mm, then the number of mounting holes 3330 in a set is less than or equal to twelve. For another example, if the outer diameter of the refrigerant tube 331 and the inner diameter of the mounting hole 333 are both 5 mm, then the number of mounting holes 3330 in a set is less than or equal to eighteen. For another example, if the outer diameter of the refrigerant tube 331 and the inner diameter of the mounting hole 333 are both 6.35 mm, then the number of mounting holes 3330 in a set is fourteen, fifteen, or sixteen.

[0114] In some embodiments, as shown in FIG15 , taking a group of mounting holes 3330 including sixteen mounting holes 333 as an example, for the first group of mounting holes 3331, four mounting holes 333 are sequentially arranged on the first connecting piece 3321, the second connecting piece 3322, the third connecting piece 3323, and the fourth connecting piece 3324. Along the first direction Z, the first mounting hole 33611 of the first connecting piece 3321, which is close to the fifth connecting piece 3325, is located at the junction of the fifth connecting piece 3325 and the first connecting piece 3321, and the second mounting hole 33612 of the second connecting piece 3322, which is close to the fifth connecting piece 3325, is located at the junction of the fifth connecting piece 3325 and the second connecting piece 3322. In this case, the fifth connecting piece 3325 is provided with two shared mounting holes 333. These two shared mounting holes 333 are the first mounting hole 33611 and the second mounting hole 33612. The third mounting hole 33613 of the sixth connecting piece 3326 close to the second connecting piece 3322 is located at the junction of the sixth connecting piece 3326 and the second connecting piece 3322, and the fourth mounting hole 33614 of the third connecting piece 3323 close to the sixth connecting piece 3326 is located at the junction of the third connecting piece 3323 and the sixth connecting piece 3326. At this time, two common mounting holes 333 are provided on the sixth connecting piece 3326. The two shared mounting holes 333 are respectively a third mounting hole 33613 and a fourth mounting hole 33614. The fifth mounting hole 33615 of the third connecting piece 3323, which is close to the seventh connecting piece 3327, is located at the junction of the third connecting piece 3323 and the seventh connecting piece 3327. The sixth mounting hole 33616 of the fourth connecting piece 3324, which is close to the seventh connecting piece 3327, is located at the junction of the fourth connecting piece 3324 and the seventh connecting piece 3327. In this case, the seventh connecting piece 3327 is provided with two shared mounting holes 333. These two shared mounting holes 333 are respectively a fifth mounting hole 33615 and a sixth mounting hole 33616. Similarly, for the second set of mounting holes 3332, the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327 are each provided with two shared mounting holes 333.

[0115] In some embodiments, the group of mounting holes 3330 includes fourteen mounting holes 333, and three mounting holes 333 are respectively provided on the second connecting piece 3322 and the third connecting piece 3323. Two common mounting holes 333 are respectively provided on the fifth connecting piece 3325, the sixth connecting piece 3326, and the seventh connecting piece 3327.

[0116] In some embodiments, as shown in FIG15 , when the width of the fin 332 along the first direction Z is a first distance 4D, the center-to-center distance between a mounting hole 333 in the first group of mounting holes 3331 and an adjacent mounting hole 333 in the second group of mounting holes 3332 is a second distance 2D, and the line connecting the centers of the two adjacent mounting holes 333 is parallel to the first direction Z. The distance between any mounting hole 333 in the first group of mounting holes 3331 and the first edge 3328 is a third distance D, and the distance between any mounting hole 333 in the second group of mounting holes 3332 and the second edge 3329 is a fourth distance D. The first distance 4D is the sum of the second distance 2D, the third distance D, and the fourth distance D, with the third distance D being equal to the fourth distance D, and the second distance 2D being twice the third distance D or the fourth distance D. In this way, the groups of mounting holes 3330 can be evenly distributed on the fin 332 in the first direction Z, which helps improve the uniformity of heat exchange within the fin 332.

[0117] In addition, when the width of the fin 332 along the first direction Z is the first distance 4D, if there is only one set of mounting holes 3330 on the fin 332, then along the first direction Z, the distance between the center of the set of mounting holes 3330 and the first edge 3328 and the second edge 3329 can be the second distance 2D respectively.

[0118] In some embodiments, as shown in Figure 15, taking the preset number N as an example, the first group of mounting holes 3331 and the second group of mounting holes 3332 respectively include N mounting holes 333, and the center distance between two adjacent mounting holes 333 is the same, and the center distance is the ninth distance L5. When multiple groups of mounting holes 3330 (such as the first group of mounting holes 3331 and the second group of mounting holes 3332) are provided on the fin 332, the positions of the two adjacent groups of mounting holes 3330 can be adjusted so that in the two adjacent groups of mounting holes 3330, the center distance between at least two mounting holes 333 in the direction perpendicular to the first edge 3228 or the second edge 3229 is the tenth distance L6, and the ninth distance L5 is the same as the tenth distance L6. In this way, multiple mounting holes 333 can be evenly and spaced apart along the extension direction of the first edge 3328 or the second edge 3329. In addition, gaps are respectively formed between the first group of mounting holes 3331 or the second group of mounting holes 3330 and the third edge 33211 and the fourth edge 33212 at both ends in the third direction Y.

[0119] Since the refrigerant tubes 331 are passed through the fins 332 along the second direction X, the refrigerant tubes 331 can be folded into a U-shaped tube, and the U-shaped tube can be regarded as two refrigerant tubes 331. Moreover, a U-shaped connecting elbow is required to connect (e.g., weld) and conduct the two refrigerant tubes 331 between the corresponding two refrigerant tubes 331. Therefore, by setting the center spacing of the multiple mounting holes 333 in the same group of mounting holes 3330 to be the ninth distance L5, and the center spacing of at least two mounting holes 333 in the direction perpendicular to the first edge 3228 or the second edge 3229 to be the tenth distance L6, the refrigerant tubes 331 and the connecting elbows can be made of the same size, without the need to additionally set U-shaped refrigerant tubes or U-shaped connecting elbows of other sizes, which is conducive to simplifying the production process and improving the assembly efficiency of the heat exchanger 33.

[0120] It should be noted that when a fin 332 is provided with multiple groups of mounting holes 3330, the width of the fin 332 in the third direction Y or the distribution of the mounting holes 333 can be adjusted so that the ninth distance L5 is equal to the second distance 2D (L5 = 2D). Alternatively, the distribution of two adjacent groups of mounting holes 3330 can be adjusted so that the multiple mounting holes 333 in the two adjacent groups of mounting holes 3330 are staggered in the first direction Z, and the center-to-center distance between one group of mounting holes 3330 and two adjacent mounting holes 333 in the other group of mounting holes 3330 is the same, and the center-to-center distance is the ninth distance L5. This facilitates the connection and installation of the refrigerant pipe 331.

[0121] In some embodiments, taking the fin 332 shown in FIG15 as an example, after a plurality of fins 332 are fabricated to form the heat exchanger 33 shown in FIG7 , the heat exchanger 33 is installed in a forward orientation within the housing 70 shown in FIG6 , such that the heat exchanger 33 faces the air outlet of the fan assembly 80 . FIG16 is a wind field simulation diagram according to some embodiments. As shown in FIG16 , simulation tests show that in the third direction Y, the heat exchanger 33 generates a relatively large amount of oblique airflow at the sixth connecting piece 3326 , the third connecting piece 3323 , the seventh connecting piece 3327 , and the fourth connecting piece 3324 .

[0122] Figure 17 is a schematic diagram of a wind farm according to some embodiments. The fan assemblies 80 in Figure 17 are located within the housing 70. As shown in Figure 17 , a significant amount of transverse airflow is generated on the windward side of the heat exchanger 33, where the air outlets of the fan assemblies 80 face. This transverse airflow may refer to airflow that is inclined in the second direction X.

[0123] FIG18 is a structural diagram of yet another fin according to some embodiments.

[0124] In some embodiments, as shown in FIG18 , when arranging the first connecting piece 3321 and the fourth connecting piece 3324, the third angle α1 formed between the edge of the first edge 3328 at the first connecting piece 3321 and the first direction Z can be set to any value within a first range. For example, the first range is 110° to 150°. For example, the third angle α1 is 110°, 130°, or 150°. The fourth angle α2 formed between the edge of the first edge 3328 at the fourth connecting piece 3324 and the first direction Z can be set to any value within a second range. For example, the second range is 110° to 150°. For example, the fourth angle α2 is 110°, 130°, or 150°. The fifth angle α3 formed between the edge of the first edge 3328 at the first connecting piece 3321 and the edge of the first edge 3328 at the fourth connecting piece 3324 can be set to any value within a third range. For example, the third range is 80° to 110°. For example, the fifth angle α3 is 80°, 100° or 110°.

[0125] Because the heat exchanger 33 acts as a resistance element in the air flow path, and the inclination angle of the fins 332 affects the air volume and wind speed distribution on the surface of the heat exchanger 33, when the third angle α1 is any value within the first range, the fourth angle α2 is any value within the second range, and the fifth angle α3 is any value within the third range, cross-flow of air on the windward side of the heat exchanger 33 can be avoided, thereby facilitating the reduction of fin noise.

[0126] It should be noted that, taking the forward-mounted heat exchanger 33 as an example, since the airflow deflection near the heat exchanger 33 mainly occurs on the side of the third connecting piece 3323 close to the first edge 3328. Therefore, as shown in Figure 18, along the first direction Z, compared with the fifth connecting piece 3325 and the seventh connecting piece 3327, the sixth connecting piece 3326 is offset toward the side close to the fan assembly 80. In this way, the second connecting piece 3322 and the third connecting piece 3323 can be tilted relative to the third direction Y. In this case, in the first direction Z, the maximum distance between the edge of the sixth connecting piece 3326 close to the fan assembly 80 and the edge of the first connecting piece 3321 or the fourth connecting piece 3324 close to the fan assembly 80 is set to the tenth distance T. The tenth distance T is set to be greater than or equal to the ninth distance L5 (T≥L5).

[0127] In this way, the size of the sixth connecting piece 3326 close to the fan assembly 80 can be reduced, which is equivalent to reducing the inclination angle of the third connecting piece 3323 compared to the third direction Y, and the airflow deviation phenomenon on the side of the third connecting piece 3323 close to the first edge 3328 can be reduced, thereby suppressing the fin sound.

[0128] In some embodiments, as shown in FIG18 , the length of the sixth connecting piece 3326 in the third direction Y and the width in the first direction Z can be increased. In addition, the above description mainly uses the example that the line connecting the centers of the mounting holes 333 is parallel to the first edge 3328 or the second edge 3329. Of course, in some embodiments, the line connecting the centers of the multiple mounting holes 333 on a connecting piece 3320 may not be parallel to the first edge 3328 or the second edge 3329. For example, as shown in FIG18 , on the sixth connecting piece 3326, the arrangement direction of each group of mounting holes 3330 is different from the extension direction of the first edge 3328 or the second edge 3329.

[0129] Here, the sixth connecting piece 3326 can be approximately a rectangular sheet structure, so that the multiple mounting holes 333 in the same group on the sixth connecting piece 3326 can have different intervals with the first edge 3328.

[0130] Among the multiple mounting holes 333 in any group of mounting holes 3330, the multiple mounting holes 333 on the first connecting piece 3321, the second connecting piece 3322, the third connecting piece 3323, the fourth connecting piece 3324, the fifth connecting piece 3325 and the seventh connecting piece 3327 are arranged at intervals along the extension direction of the first edge 3328; among the two or more mounting holes 333 on the sixth connecting piece 3326, the first part of the mounting holes are arranged at intervals along the extension direction of the first edge 3328, the second part of the mounting holes are located on one side of the first part of the mounting holes in the first direction Z, and the angle formed by the center line connecting at least three mounting holes 333 on the sixth connecting piece 3326 is open along the first direction Z.

[0131] Taking a group of mounting holes 333 including fifteen or sixteen mounting holes 333 as an example, the first connecting piece 3321 may be provided with four mounting holes 333, the second connecting piece 3322 and the third connecting piece 3323 may each be provided with three mounting holes 333, and the fourth connecting piece 3324 may be provided with four mounting holes 333. For a group of connecting pieces 3330 (e.g., the first group of connecting pieces 3331), for example, the sixth connecting piece 3326 may share a mounting hole 333 with the third connecting piece 3323 at one end in the third direction Y, and may share another mounting hole 333 with the second connecting piece 3322 at the other end in the opposite direction in the third direction Y. In the first direction Z, one or two mounting holes 333 on the sixth connecting piece 3326 can be close to the second edge 3329, and the other two mounting holes 333 on the sixth connecting piece 3326 can be close to the first edge 3328 relative to the one or two mounting holes 333, so that the angle or opening formed by the center line connecting the three or four mounting holes 333 can be opened in the direction of the first edge 3328.

[0132] When the length of the sixth connecting piece 3326 in the third direction Y is insufficient to provide three or four mounting holes 333 , the above-mentioned arrangement of the mounting holes 333 can be used to allow at least one additional mounting hole 333 to be arranged on the sixth connecting piece 3326 , which is beneficial for arranging more refrigerant tubes 331 in the shell 70 .

[0133] It should be noted that the fifth connecting piece 3325 or the seventh connecting piece 3327 can also be arranged with mounting holes 333 in the same manner as the above-mentioned mounting holes 333. If the fin 332 is provided with multiple groups of mounting holes 3330, the size and shape of the center line connecting the mounting holes 3330 in two adjacent groups of mounting holes 3330 can be approximately the same.

[0134] Taking the two groups of mounting holes 333 provided on fin 332 as an example, as shown in FIG18 , on sixth connecting piece 3326, seventh mounting hole 33670 and eighth mounting hole 33680 are respectively provided as the first portion of mounting holes in first group of mounting holes 3331, ninth mounting hole 33690 and tenth mounting hole 33700 are respectively provided as the second portion of mounting holes in first group of mounting holes 3331, fifth mounting hole 33650 and sixth mounting hole 33660 are respectively provided as the first portion of mounting holes in second group of mounting holes 3332, and third mounting hole 33630 and fourth mounting hole 33640 are respectively provided as the second portion of mounting holes in second group of mounting holes 3332. Along first direction Z, the distance between the center of third mounting hole 33630 and the center of fourth mounting hole 33640 and second edge 3329 is an eighth distance L1, and the distance between the center of fifth mounting hole 33650 and the center of sixth mounting hole 33660 and second edge 3329 is a seventh distance L2. Along the first direction Z, the distances between the centers of the seventh mounting hole 33670 and the eighth mounting hole 33680 and the first edge 3328 are each a fifth distance L3. The distances between the centers of the ninth mounting hole 33690 and the tenth mounting hole 33700 and the first edge 3328 are each a sixth distance L4. Here, the eighth distance L1 is greater than the fifth distance L3 (L1>L3), and the seventh distance L2 is less than the sixth distance L4 (L2<L4). It should be noted that the fins 332 may be symmetrical about the central axis S of the sixth connecting piece 3326, which is parallel to the first direction Z.

[0135] In some embodiments, if a plurality of mounting holes 333 in a set of mounting holes 3330 on a fin 332 are numerous, a portion of the plurality of mounting holes 333 can be connected to refrigerant tubes 331 to achieve sufficient heat dissipation efficiency for the heat exchanger 33. In this case, since the fourth connecting piece 3324 is located away from the air outlet side of the fan assembly 80 in the third direction Y, at least one mounting hole 333 in the set of mounting holes 3330 located on the fourth connecting piece 3324 can be left unconnected with a refrigerant tube 331. This allows the refrigerant tube 331 to be closer to the air outlet side of the fan assembly 80 in the third direction Y. Due to the lower air flow velocity at the fourth connecting piece 3324, the air flow volume is reduced. Therefore, reducing the number of refrigerant tubes 331 on the fourth connecting piece 3324 can reduce the heat exchange efficiency of the heat exchanger 33.

[0136] For example, a group of mounting holes 333 is provided on the fin 332, and the number of mounting holes 333 in the group of mounting holes 333 on the fourth connecting piece 3324 is three or four. In this case, when inserting the refrigerant tube 331 into the group of mounting holes 333, one or more of the three or four mounting holes 333 can be left vacant. In this vacant state, the refrigerant tube 331 is not inserted into the mounting hole 333, and a wide-span elbow can be used to connect two refrigerant tubes 331 spaced apart.

[0137] When multiple groups of mounting holes 3330 are provided on the fin 332, and each group of mounting holes 3330 includes three or four mounting holes 3330 on the fourth connecting piece 3324, one or more mounting holes 333 located near the seventh connecting piece 3327 or the fourth edge 33212 of each group of mounting holes 3330 on the fourth connecting piece 3324 can be left vacant to facilitate insertion of the refrigerant tube 331. For example, as shown in FIG19 , among the multiple mounting holes 333 located on the fourth connecting piece 3324 in the first group of mounting holes 3331, one mounting hole 3330 located near the fourth edge 33212 along the third direction Y does not need to be inserted into the refrigerant tube 331. Among the multiple mounting holes 333 located on the fourth connecting piece 3324 in the second group of mounting holes 3332, one mounting hole 333 located near the seventh connecting piece 3327 along the third direction Y does not need to be inserted into the refrigerant tube 331. This is beneficial for the heat exchanger 33 to have a higher heat exchange efficiency when fewer refrigerant pipes 331 are installed.

[0138] It should be noted that during the production and processing of the fins 332, mounting holes 333 may still be provided at the remaining hole positions, which is conducive to standardizing the production specifications of the fins 332 and facilitating mass production of the fins 332. Of course, it is also possible not to provide corresponding mounting holes 333 at the remaining hole positions, which is conducive to simplifying the structure of the fins 332, and this disclosure is not limited to this.

[0139] The above mainly uses the sixth connecting piece 3326 as a rectangular sheet structure as an example for explanation. Of course, the sixth connecting piece 3326 can also be of other structures. Figure 19 is a structural diagram of another fin according to some embodiments. Taking the forward-mounted heat exchanger 33 as an example, as shown in Figure 19, since in the same group of mounting holes 3330, the center line connecting the multiple mounting holes 333 located on the sixth connecting piece 3326 can be set along the first direction Z toward the side of the first edge 3328. Therefore, the edge of the sixth connecting piece 3326 close to the fan assembly 80 can be set to be recessed along the first direction Z toward the side where the second edge 3329 is located, so that the edge of the sixth connecting piece 3326 close to the fan assembly 80 can be close to the corresponding mounting hole 333 in the first direction Z, thereby reducing the air flow resistance.

[0140] In some embodiments, as shown in Figure 19, the edge of the sixth connecting piece 3326 away from the fan assembly 80 can be protruded in the opposite direction of the first direction Z toward the side away from the first edge 3328, so that the edge of the sixth connecting piece 3326 corresponding to the second edge 3329 can have a sufficient distance from the corresponding mounting hole 333 in the first direction Z, which is beneficial to increase the effective heat exchange area of ​​the refrigerant pipe 331 passing through this part of the mounting hole 333, thereby improving the heat exchange efficiency of the heat exchanger 33.

[0141] It should be noted that the recess on the edge of the sixth connecting piece 3326 near the fan assembly 80 may be rectangular, triangular, or arc-shaped, and the shape of the recess may be the same as or similar to the shape of the center line connecting the multiple mounting holes 333 in the same group of mounting holes 330 on the sixth connecting piece 3326. The edge of the sixth connecting piece 3326 away from the fan assembly 80 may have the same shape and size as the edge of the sixth connecting piece 3326 near the fan assembly 80, and one of the two edges may overlap with the other edge after translation along the first direction Z.

[0142] In some embodiments, as shown in FIG18 , the fin 332 further includes a plurality of first reinforcing ribs 33213 . The first reinforcing ribs 33213 are configured to enhance the structural strength of the fin 332 . The plurality of first reinforcing ribs 33213 are disposed on at least one of the plurality of connecting pieces 3320 . For example, the first reinforcing ribs 33213 are disposed on one or more of the four connecting pieces 3320 or the seven connecting pieces 3320 , so that the first reinforcing ribs 33213 on a connecting piece 3320 can extend in the direction of the first edge 3328 corresponding to the connecting piece 3320 , thereby enhancing the bending strength of the fin 332 and enabling the fin 332 to maintain a relatively flat planar structure. Here, the first reinforcing ribs 33213 can be a strip-shaped convex rib structure that protrudes toward one side of the fin 332 in the second direction X.

[0143] For example, a first reinforcing rib 33213 is provided on the first connecting piece 3321 near the angle formed by the third edge 33211 and the first edge 3328, and the first reinforcing rib 33213 extends in the direction of the first edge 3328. Alternatively, a first reinforcing rib 33213 may be provided on the fourth connecting piece 3324 near the angle formed by the fourth edge 33212 and the first edge 3328, and the first reinforcing rib 33213 extends in the direction of the first edge 3328.

[0144] Furthermore, if the fin 332 is provided with multiple groups of mounting holes 3330, multiple first reinforcing ribs 33213 may be arranged between two groups of mounting holes 3330. The multiple first reinforcing ribs 33213 may extend in the direction of the first edge 3328 and be spaced apart along the extension direction of the first edge 3328. It should be noted that on the sixth connecting piece 3326, between two adjacent groups of mounting holes 3330, the first reinforcing ribs 33213 may extend along the third direction Y.

[0145] In some embodiments, as shown in FIG18 , the fin 332 further includes a plurality of thermal insulation holes 33214 . The plurality of thermal insulation holes 33214 are respectively provided on the plurality of connecting pieces 3320 and extend along the extension direction of the first edge 3328 . The thermal insulation holes 33214 may be strip-shaped holes extending in the direction of the first edge 3328 . Here, the thermal insulation holes 33214 may be provided between two adjacent groups of mounting holes 3330 to block heat conduction between the plurality of refrigerant tubes 331 adjacent to each other in the two groups of mounting holes 3330 , thereby reducing heat loss between the heat exchangers 33 and improving the heat exchange efficiency of the heat exchangers 33 .

[0146] Furthermore, if a first reinforcing rib 33213 and a thermal insulation hole 33214 are provided between two adjacent groups of mounting holes 3330, the plurality of first reinforcing ribs 33213 and the plurality of thermal insulation holes 33214 can be arranged alternately and spaced apart in the direction of the first edge 3328. This can improve the bending strength of the fins 332 and the heat exchange efficiency of the heat exchanger 33. It should be noted that if a thermal insulation hole 33214 is provided between two adjacent groups of mounting holes 3330 on the sixth connecting piece 3326, the thermal insulation hole 33214 can extend along the third direction Y.

[0147] Figure 20 is a partial enlarged view of circle A in Figure 19 . In some embodiments, to reduce lateral airflow on the air inlet side of the heat exchanger 33, as shown in Figures 18 and 20 , the fin 332 further includes a plurality of slits 33215. These slits 33215 are respectively provided on the fin body 3340. The slits 33215 can be a protruding structure formed by stamping a portion of the fin 332 structure, with openings provided on opposite sides of the protruding structure perpendicular to the centerline connecting the two corresponding mounting holes 333 to form an air flow channel. The slits 33215 are configured to enhance the contact heat exchange effect between the air and the fin 332 and reduce lateral airflow on the air inlet side of the heat exchanger 33. It should be noted that, among the multiple mounting holes 333 in a group of mounting holes 3330, one or more slits 33215 can be provided between two adjacent mounting holes 333.

[0148] As shown in FIG18 , the protruding structures of the plurality of slit portions 33215 can be sequentially connected between two adjacent mounting holes 333 along a direction perpendicular to the line connecting the centers of the two corresponding mounting holes 333. In this case, the protruding structures of the two adjacent slit portions 33215 can be arranged to protrude toward opposite sides of the fin 332 along the second direction X. Alternatively, the protruding structures of the plurality of slit portions 33215 can be arranged at intervals between two adjacent mounting holes 333. In this case, the protruding structures of the plurality of slit portions 33215 can be arranged to protrude toward the same side of the fin 332 along the X direction. It should be noted that for locations other than the sixth connecting piece 3326 on the fin 332, the direction perpendicular to the line connecting the centers of the two corresponding mounting holes 333 can be a direction perpendicular to the first edge 3328 of the corresponding location.

[0149] When air flows between two adjacent fins 332 arranged along the second direction X, part of the air can flow close to the fins 332 through multiple cracks 33215. In this way, the contact heat exchange effect between the air and the fins 332 can be improved, and it is beneficial to reduce the lateral airflow on the air inlet side surface of the heat exchanger 33.

[0150] It should be noted that, in the direction opposite to the third direction Y, as the first edge 3328 extends from the first connecting piece 3321 toward the fourth connecting piece 3324, the air flow rate on the air inlet side of the heat exchanger 33 gradually decreases. Therefore, as shown in FIG18 , when multiple slits 33215 are provided on multiple connecting pieces 3320, the density of the slits 33215 on the fourth connecting piece 3324 can be smaller than the density of the slits 33215 on the first connecting piece 3321. The density of the slits 33215 on the seventh connecting piece 3327 can also be smaller than the density of the slits 33215 on the first connecting piece 3321. For example, in the direction opposite to the third direction Y, the density of the slits 33215 on each connecting piece 3320 decreases sequentially from the first connecting piece 3321 to the seventh connecting piece 3327. In this way, the contact heat exchange effect between the air and the fins 332 can be improved, and the lateral airflow on the air inlet side surface of the heat exchanger 33 can be reduced. The fin structure can also be simplified, and the production cost and processing difficulty can be reduced.

[0151] Figure 21 is a simulated diagram of another wind field according to some embodiments. In some embodiments of the present disclosure, a heat exchanger 33 is constructed using fins 332 and installed within a housing 70. Simulation tests show that, as shown in Figure 21, the transverse airflow at the air inlet surface of the heat exchanger 33 in the third direction Y is reduced compared to Figure 17. This effectively reduces the fin noise generated by the fins 332 in the heat exchanger 33.

[0152] It should be noted that the heat exchanger 33 composed of fins 332 can be used in the indoor unit 101 of the air conditioner 100 such as duct unit, wall-mounted unit, cabinet unit, etc., and can also be used as an evaporator or condenser in an all-in-one air conditioner. This disclosure does not limit this.

[0153] The foregoing description primarily uses the example of reducing fin noise generated by the fins 332 in the heat exchanger 33 by setting the angles between the fins 3320 (e.g., the fourth angle α1, the fifth angle α2, and the sixth angle α3), the fourth distance T, and the plurality of thermal insulation holes 33214. Some embodiments of the present disclosure also provide another indoor unit 101 for reducing noise generated by the fan assembly 80.

[0154] Fig. 22 is a perspective view of another indoor unit according to some embodiments. Fig. 23 is a cross-sectional view of another indoor unit according to some embodiments.

[0155] In some embodiments, as shown in Figures 22 and 23, the indoor unit 101 includes a housing 70. The housing 70 includes a first side panel 13, a second side panel 14, a third side panel 15, a fourth side panel 16, a fifth side panel, and a sixth side panel 190. The first side panel 13 opposes the second side panel 14. The first side panel 13 serves as the bottom panel of the indoor unit 101, and the second side panel 14 serves as the top panel of the indoor unit 101. The third side panel 15, the fourth side panel 16, the fifth side panel, and the sixth side panel 190 are disposed between the first side panel 13 and the second side panel 14, respectively. The third side panel 15 opposes the fourth side panel 16, and the third side panel 15 serves as the rear panel of the indoor unit 101, while the fourth side panel 16 serves as the front panel of the indoor unit 101. The fifth side panel opposes the sixth side panel 190, and the sixth side panel 190 serves as the right side panel of the indoor unit 101. The fifth side panel serves as the left side panel of the indoor unit 101, and the sixth side panel 190 opposes the fifth side panel.

[0156] In some embodiments, as shown in Figures 22 and 23, the indoor unit 101 further includes a first air inlet 11 and an air outlet 12, and the first air inlet 11 and the air outlet 12 are respectively provided on the housing 701. For example, the first air inlet 11 is provided on the third side panel 15, and the air outlet 12 is provided on the fourth side panel 16. Air enters the housing 70 through the first air inlet 11 and flows out of the housing 70 through the air outlet 12.

[0157] In some embodiments, as shown in FIG23 , the indoor unit 101 further includes a partition panel side panel 40 . The partition panel 40 is vertically connected to the housing 70 and divides the space within the housing 70 into a first air cavity 17 and a second air cavity 18 . The first air cavity 17 and the second air cavity 18 are arranged sequentially along a first direction. The first air inlet 11 communicates with the first air cavity 17 , and the air outlet 12 communicates with the second air cavity 18 . The partition panel 40 is provided with a vent 41 , and the first air cavity 17 communicates with the second air cavity 18 through the vent 41 .

[0158] Fig. 24 is a top view of another indoor unit according to some embodiments. In order to clearly illustrate the internal structure of the indoor unit 101, the housing 70 is omitted.

[0159] In some embodiments, as shown in FIG24 , the second air cavity 18 includes a first region 181 and a second region 182 . The first region 181 and the second region 182 are arranged along the second direction, and the indoor heat exchanger 32 is located within the first region 181 . The fan assembly 80 is disposed within the first air cavity 17 and is configured to increase air flow, thereby directing air from the first air inlet 11 to the air outlet 12 . The black arrows in FIG23 indicate the direction of air flow.

[0160] In some embodiments, as shown in Figures 23 and 24 , the indoor heat exchanger 32 is disposed within the housing 70 and is located along the air flow path from the first air inlet 11 to the air outlet 12. For example, the indoor heat exchanger 32 is disposed within the second air cavity 18 and is positioned toward the side closest to the air outlet 12. The indoor heat exchanger 32 is configured to absorb heat from the air entering the housing 70 or to transfer heat to the air.

[0161] In some embodiments, as shown in FIG23 , the indoor unit 101 further includes a water collecting pan 21 . The water collecting pan 21 is disposed below the indoor heat exchanger 32 to collect water condensed in the indoor heat exchanger 32 .

[0162] In some embodiments, as shown in FIG24 , the indoor unit 101 further includes a water pump 60 . The water pump 60 is located in the second area 182 and is fixedly connected to the side wall of the housing 70 . The water pump 60 is configured to drain condensed water in the water receiving tray 21 .

[0163] Figure 25 is a structural diagram of an indoor heat exchanger and piping assembly according to some embodiments. Figure 26 is another structural diagram of an indoor heat exchanger and piping assembly according to some embodiments. Figure 27 is yet another structural diagram of an indoor heat exchanger and piping assembly according to some embodiments.

[0164] In some embodiments, as shown in Figures 24 to 26 , the indoor unit 101 further includes a piping assembly 90 disposed within the second region 182 , with the piping assembly 90 and the water pump 60 arranged in a front-to-rear direction. The piping assembly 90 is configured to connect the indoor heat exchanger 32 with the refrigerant within the outdoor unit 102 .

[0165] In some embodiments, as shown in Figures 26 and 27, the piping assembly 90 includes an expansion valve 51, which is connected to the indoor heat exchanger 32 via a refrigerant pipe 331 (e.g., a copper pipe). The expansion valve 51 is configured to reduce the pressure of the refrigerant and adjust the amount of refrigerant supplied to the indoor heat exchanger 32 so that sufficient heat can be exchanged between the air and the refrigerant in the indoor heat exchanger 32. The expansion valve 51 can adjust the refrigerant amount by adjusting its opening.

[0166] As shown in FIG23 , since the air flows in the second air cavity 18 in the first direction (front-to-back direction), in some embodiments of the present disclosure, the pipe assembly 90 is disposed on one side of the indoor heat exchanger 32 in the second direction (left-to-right direction), for example, the pipe assembly 90 is located on the left or right side of the indoor heat exchanger 32. This prevents the pipe assembly 90 from blocking air and preventing air volume loss, eliminating the need to increase the speed of the fan assembly 80 to increase air volume, thereby reducing noise caused by the operation of the fan assembly 80. It should be noted that some embodiments of the present disclosure are described using the example of the pipe assembly 90 being located on the right side of the indoor heat exchanger 32.

[0167] It should be noted that, when the expansion valve 51 in the pipe assembly 90 is placed on the right side of the indoor heat exchanger 32 , the expansion valve 51 will occupy the right side space of the indoor heat exchanger 32 .

[0168] In some embodiments, as shown in Figures 26 and 27, the axis P of the expansion valve 51 is set along the third direction. In this way, on the one hand, the impact of the refrigerant flowing in the pipeline on the internal valve needle of the expansion valve 51 can be reduced, and on the other hand, the space occupied by the expansion valve 51 in the first direction and the second direction can be reduced.

[0169] 26 and 27 , the pipe assembly 90 further includes a flow dividing component 52. The flow dividing component 52 is configured to merge or divide the refrigerant, so that one flow of refrigerant is divided into multiple flows of refrigerant, or multiple flows of refrigerant are merged into one flow.

[0170] The diverter component 52 is disposed between the expansion valve 51 and the indoor heat exchanger 32. For example, the right side of the indoor heat exchanger 32 is provided with a plurality of first ports and a plurality of second ports. These first ports and second ports correspond to the refrigerant pipe 331, respectively. The first end of the diverter component 52 is connected to the first port of the indoor heat exchanger 32, and the second end of the diverter component 52 is connected to the expansion valve 51. When the indoor unit 101 is operating, the refrigerant flows into the indoor heat exchanger 32 from one of the first and second ports and flows out of the indoor heat exchanger 32 from the other of the first and second ports.

[0171] In some embodiments, as shown in Figures 26 and 27, the piping assembly 90 further includes a first tube 531 and a second tube 532. The first tube 531 and the second tube 532 are respectively located between the diverter 52 and the expansion valve 51, and the first tube 531 and the second tube 532 extend in the vertical direction. One end of the first tube 531 is connected to the second end of the diverter 52, and the other end of the second tube 532 is connected to the expansion valve 51.

[0172] The first tube 531 is located on one side of the diverter component 52 in the up and down directions. For example, the first tube 531 is located on the lower side of the diverter component 52, and the second tube 532 is located at the lower end of the expansion valve 51. In this way, the diverter component 52 and the expansion valve 51 can be prevented from being immersed in the condensed water in the water receiving tray 21.

[0173] In some embodiments of the present disclosure, the diverter component 52, the expansion valve 51, the first tube 531 and the second tube 532 are respectively placed vertically. In this way, most of the path of the refrigerant between the diverter component 52 and the expansion valve 51 is vertical, and the vertical direction is the same as the direction of gravity, which is conducive to the flow of the refrigerant. In addition, the structure of the pipeline assembly 90 in the horizontal direction (such as the second direction and the third direction) can be made compact, reducing the horizontal space occupied by the pipeline assembly 90.

[0174] 26 and 27 , the pipe assembly 90 further includes a first filter 54. The first filter 54 is disposed between the diverter 52 and the expansion valve 51 and is configured to filter the refrigerant to allow the refrigerant to flow smoothly.

[0175] In some embodiments, as shown in Figures 26 and 27, the piping assembly 90 further includes a third pipe 533 and a fourth pipe 534. The third pipe 533 and the fourth pipe 534 are respectively disposed between the diverter 52 and the expansion valve 51. The third pipe 533 and the fourth pipe 534 extend in the vertical direction, respectively, and the first filter 54 is disposed on the third pipe 533 or the fourth pipe 534. The piping assembly 90 further includes a fifth pipe 535, a sixth pipe 536, and a seventh pipe 537. One end of the third pipe 533 is connected to the end (e.g., the lower end) of the first pipe 531 away from the diverter 52 via the fifth pipe 535. The other end (e.g., the end away from the diverter 52) of the third pipe 533 is connected to one end of the fourth pipe 534 via the sixth pipe 536. The other end of the fourth pipe 534 is connected to the end (e.g., the lower end) of the second pipe 532 away from the diverter 52 via the seventh pipe 537. In this way, it is possible to avoid disposing the first filter 54 on the first tube 531 or the second tube 532 , which would increase the height of the first tube 531 or the second tube 532 and thus increase the height of the indoor unit 101 .

[0176] It should be noted that the first tube 531, the second tube 532, the third tube 533, and the fourth tube 534 can each be a straight tube, and the fifth tube 535, the sixth tube 536, and the seventh tube 537 can each be a curved tube. Furthermore, because the diverter 52 is connected to the indoor heat exchanger 32, the first tube 531 can be closer to the left side, the third tube 533 can be farther from the indoor heat exchanger 32 than the first tube 531, the fourth tube 534 can be closer to the indoor heat exchanger 32 than the third tube 533, and the second tube 532 can be farther from the indoor heat exchanger 32 than the fourth tube 534.

[0177] In some embodiments of the present disclosure, the third tube 533 and the fourth tube 534 extend in the up and down directions respectively, and the axis S of the first filter 54 is also arranged in the up and down directions. This is conducive to the flow of refrigerant, and also avoids the lateral size of the pipeline assembly 90 being too large, and occupies a small space.

[0178] In some embodiments, the inner diameter of the pipeline between the diverting component 52 and the first filter 54 (eg, the first tube 531 and the fifth tube 535 ) is larger than the inner diameter of other parts of the pipeline.

[0179] It should be noted that if the first filter 54 is disposed on the fourth tube 534, the pipeline between the diverter component 52 and the first filter 54 includes the first tube 531, the third tube 533, the fifth tube 535, and a portion of the fourth tube 534, and the inner diameters of the first tube 531, the third tube 533, the fifth tube 535, and a portion of the fourth tube 534 are larger than the inner diameters of the other pipelines in the pipeline assembly 90. If the first filter 54 is disposed on the third tube 533, the first filter 54 is positioned closer to the diverter component 52 on the pipeline, and the pipeline between the diverter component 52 and the first filter 54 only includes the first tube 531, the fifth tube 535, and a portion of the third tube 533. This can reduce the length of the thick pipeline and save costs.

[0180] Figure 28 is a structural diagram of a pipeline assembly according to some embodiments. In some embodiments of the present disclosure, as shown in Figure 28, on a plane perpendicular to the third direction (vertical direction), line segment AB between axis A of the first tube 531 and axis B of the third tube 533, line segment BC between axis B of the third tube 533 and axis C of the fourth tube 534, and line segment CD between axis C of the fourth tube 534 and axis D of the second tube 532 are arranged in a roughly "Z" shape. This arrangement can make the pipeline structure between the diverter 52 and the expansion valve 51 more compact. If the pipeline between the diverter 52 and the expansion valve 51 is unfolded, for example, in a straight line and arranged along the second direction, the pipeline occupies a relatively large space in the left-right direction. If the pipeline is in a straight line and arranged along the first direction, the pipeline occupies a relatively large space in the front-to-back direction.

[0181] It should be noted that the axis of the first tube 531, the second tube 532, the third tube 533, and the fourth tube 534 refers to the point formed by the orthographic projection of the central axis of each tube on a plane perpendicular to the third direction (up and down direction).

[0182] In some embodiments, as shown in FIG28 , the seventh angle α4 formed by the line segment AB and the line segment CD is any value within a third range. For example, the third range is 0° to 20°. For example, the seventh angle α4 is 0°, 5°, 10°, 15°, or 20°.

[0183] It should be noted that by setting the seventh angle α4 to be less than or equal to 20° (α4 ≤ 20°), the distance between the diverter component 52 and the expansion valve 51 can be made relatively compact. If the seventh angle α4 is large, for example, if the seventh angle α4 is greater than 20° (α4 > 20°), the distance between the diverter component 52 and the expansion valve 51 is relatively far, and the diverter component 52 and the expansion valve 51 occupy a relatively large space in the second area 182, which is not conducive to the miniaturization of the pipeline assembly 90.

[0184] FIG29 is another structural diagram of a piping assembly according to some embodiments. In some embodiments, as shown in FIG29 , piping assembly 90 further includes a second filter 55 and a first pipe connector 56. The end of expansion valve 51, distal from diverter 52, is connected to one end of second filter 55, and the other end of second filter 55 is connected to first pipe connector 56. Furthermore, first pipe connector 56 can be secured to a sidewall of housing 70 for connection to outdoor unit 102.

[0185] It should be noted that the pipeline between the expansion valve 51 and the first pipe joint 56 can be arranged horizontally to avoid increasing the height of the pipeline assembly 90.

[0186] In some embodiments, as shown in FIG29 , the piping assembly 90 further includes a manifold 580 and a second pipe joint 57. One end of the manifold 580 is connected to the second port of the indoor heat exchanger 32, and the other end of the manifold 580 is connected to the second pipe joint 57. The second pipe joint 57 is fixed to the right side wall of the housing 70 for connection to the outdoor unit 102.

[0187] Typically, in some indoor units, the expansion valve is provided on the windward side of the indoor heat exchanger. The windward side may be the side of the indoor heat exchanger facing the air outlet of the fan assembly 80. Compare the indoor unit 101 with the indoor unit. FIG30 is a comparison chart of air volume according to some embodiments. As shown in FIG30 , the horizontal axis represents the fan gear position, and the vertical axis represents the air volume. In each group of bar charts, the first column represents the air volume of the indoor unit, and the second column represents the air volume of the indoor unit 101. At the same rotation speed of the fan assembly 80, the air volume of the indoor unit 101 is about 6% higher than that of the indoor unit. Therefore, the indoor unit 101 of some embodiments of the present disclosure can increase the air volume, and the rotation speed of the fan assembly 80 is lower, and the noise generated is smaller.

[0188] The preceding description primarily uses the example of the pipe assembly 90 being located on one side of the indoor heat exchanger 32 in the second direction to reduce the noise of the indoor unit 101. Of course, in some embodiments, other methods can also be used to reduce the noise of the indoor unit 101. The following describes in detail the indoor unit 101 provided in some embodiments of the present disclosure.

[0189] Fig. 31 is a structural diagram of another indoor unit according to some embodiments. Fig. 32 is a cross-sectional view of another indoor unit according to some embodiments.

[0190] In some embodiments, as shown in Figures 31 and 32, the fan assembly 80 includes a volute 81 and a fan 82. The rotation of the fan 82 drives air flow, and the volute 81 is located outside the fan 82. The volute 81 has air intakes on its left and right sides, and an exhaust port 310 is located at one end (e.g., the front end) of the volute 81 near the indoor heat exchanger 32. The volute 81 is connected to the partition plate, and the exhaust port of the volute 81 is connected to the vent 41 on the partition plate 40.

[0191] In some embodiments, as shown in Figure 32, the first air inlet 11 is located at one end (e.g., the lower end) of the fan assembly 80 away from the second side panel 14. Driven by the fan 82, air enters the first air cavity 17 from the first air inlet 11, and flows into the air outlet cavity 18 through the air intake and exhaust ports 310 of the volute 81 to exchange heat with the indoor heat exchanger 32, and is blown out from the air outlet 12.

[0192] In some embodiments, air can also enter the first air cavity 17 from the side end of the indoor unit 101. Figure 33 is another cross-sectional view of another indoor unit according to some embodiments. For example, as shown in Figure 33, the indoor unit 101 further includes a cover plate 19, and the cover plate 19 is provided on the first air inlet 11. In this case, a second air inlet 22 can be formed on one side (e.g., the rear side) of the housing 70. Air enters the first air cavity 17 from the second air inlet 22, and flows into the air outlet 18 through the air intake and exhaust ports 310 of the volute 81 to exchange heat with the indoor heat exchanger 32, and is blown out from the air outlet 12.

[0193] In some embodiments, as shown in FIG32 , the distance from the end of the first air inlet 11 close to the partition plate 40 (e.g., the front end E) to the first surface 3100 of the partition plate 40 close to the volute is the tenth distance L9, and the distance from the end of the first air inlet 11 away from the partition plate 40 (e.g., the rear end C) to the first surface 3100 is the eleventh distance L10, and the ratio of the tenth distance L9 to the eleventh distance L10 is any value within the fourth range. For example, the fourth range is 1 / 6 to 1 / 4. Then the ratio of the tenth distance L9 to the eleventh distance is any value within 1 / 6 to 1 / 4. For example, the ratio of the tenth distance L9 to the eleventh distance is 1 / 6, 5 / 24 or 1 / 4 (L9 / L10=1 / 6, L9 / L10=5 / 24 or L9 / L10=1 / 4).

[0194] In some embodiments, as shown in Figure 32, the first side panel 13 includes a first sub-side panel 131 and a second sub-side panel 132. The second sub-side panel 132 is connected to the first sub-side panel 131, and the first sub-side panel 131 is located on the side of the partition plate 40 away from the third side panel 15, and the second sub-side panel 132 is located on the side of the partition plate 40 close to the third side panel 15. Along the first direction, the length of the second sub-side panel 132 is the tenth distance L9. The first sub-side panel 131 and the second sub-side panel 132 are an integral part. The front end E of the first air inlet 11 can be located on the side of the partition plate 40 close to the first air cavity 17, so that the second sub-side panel 132 can block the exhaust end (front end) of the volute 81. When the air enters the first air cavity 17 from the first air inlet 11, it can avoid impacting the front end of the volute 81, thereby reducing noise.

[0195] It should be noted that when the volume of the fan assembly 80 increases, the eleventh distance L10 will also increase. When the value of the eleventh distance L10 is determined, the value of the tenth distance L9 can also be determined based on the ratio of the tenth distance L9 to the eleventh distance L10 being any value within the fourth range.

[0196] If the tenth distance L9 is relatively short, the length of the second sub-side plate 132 in the front-to-back direction is relatively short, and the effect of the second sub-side plate 132 in blocking air from impacting the volute 81 will be reduced, and the noise reduction effect will also be reduced. If the eleventh distance L10 is relatively long, the length of the second sub-side plate 132 in the first direction will be relatively long, and the first air inlet 11 will be reduced, which will affect the airflow volume of the indoor unit 101. Therefore, by setting the ratio of the tenth distance L9 to the tenth distance L10 to any value within the fourth range, it is possible to avoid affecting the airflow volume of the indoor unit 101 and reduce noise.

[0197] In some embodiments, when the ratio of the tenth distance L9 to the eleventh distance L10 is any value within the fifth range, for example, the fifth range is 1 / 6 to 5 / 24. In this case, when air enters the first air cavity 17 through the first air inlet 11, the noise generated by the indoor unit 101 during operation can meet the noise test, and under the same air volume conditions, the larger the ratio of the tenth distance L9 to the eleventh distance L10, the lower the noise generated by the indoor unit 101 during operation.

[0198] In some embodiments, when the ratio of the tenth distance L9 to the eleventh distance L10 is any value within the sixth range, for example, the sixth range is 5 / 24 to 1 / 4. In this case, compared to when the ratio of the tenth distance L9 to the eleventh distance L10 is any value within the fifth range, the indoor unit 101 operates with lower noise and a better noise reduction effect. As the ratio of the tenth distance L9 to the eleventh distance L10 increases, the first air inlet 11 has a greater impact on the air volume, but the impact on the air volume is within an acceptable range.

[0199] Therefore, in some embodiments, the ratio of the tenth distance L9 to the eleventh distance L10 is 5 / 24. In this case, the second sub-side plate 132 has a smaller impact on the air volume and produces lower noise.

[0200] Figure 34 is a bar graph comparing noise levels at the same air volume according to some embodiments. In some embodiments, noise experiments were conducted by setting the eleventh distance L10 to approximately 215 mm and the tenth distance L9 to 20 mm, 35 mm, 45 mm, 55 mm, and 60 mm (L1 = 20 mm, L1 = 35 mm, L1 = 45 mm, L1 = 55 mm, and L1 = 60 mm). The experimental results show that the greater the tenth distance L9, the lower the noise level of the indoor unit 101 when operating at the same air volume. It should be noted that when the tenth distance L9 is 20 mm, the noise level is high and does not meet the requirements; when the tenth distance L9 is 60 mm, the noise level is low, but the power of the wind assembly 80 needs to be increased to increase the air volume; and when the tenth distance L9 is 55 mm, the air volume is slightly reduced and is within an acceptable range.

[0201] Figure 35 is another cross-sectional view of another indoor unit according to some embodiments. The above description mainly uses the first sub-side panel 131 and the second sub-side panel 132 as an example of a single piece. Of course, in some embodiments, as shown in Figure 35, the first sub-side panel 131 and the second sub-side panel 132 can also be a single piece.

[0202] It should be noted that, in some embodiments, the first side panel 13 usually only includes the first sub-side panel 131. At this time, the first sub-side panel 131 and the second sub-side panel 132 can be spliced. In this case, only the second sub-side panel 132 needs to be added, and there is no need to replace the first side panel 13, which can reduce costs.

[0203] In some embodiments, the position of the partition plate 40 in the shell 70 can also be moved forward so that the second air cavity 18 becomes smaller in the front-to-back direction and the first air cavity 17 becomes larger in the front-to-back direction. In this way, the rear part of the first side panel 13 can also form a second sub-side panel 132.

[0204] In some embodiments, the first side panel 13 may form an edge of the first air inlet 11 . In this case, the rear end of the first side panel 13 is an upwardly bent step.

[0205] In some embodiments, as shown in Figure 35 , the rear end of the first side panel 13 is first bent upward and then laterally backward to form a step. This stepped structure of the first side panel 13 facilitates the connection between the cover panel 19 and the rear end of the first side panel 13. When air enters the first air cavity 17 through the second air inlet 22, the cover panel 19 engages with the stepped surface at the rear end of the first side panel 13, allowing for positioning, facilitating assembly operations and improving assembly efficiency.

[0206] Figure 36 is a structural diagram of a partition plate according to some embodiments. In some embodiments, as shown in Figure 36 , the partition plate 40 includes a first sub-partition plate 42 and a second sub-partition plate 43. The first sub-partition plate 42 is the main structure of the partition plate 40, and the vent 41 is provided on the first sub-partition plate 42.

[0207] The second sub-partition 43 is formed by extending rearward from the bottom end of the first sub-partition 42. In the first direction Y, the second sub-partition 43 is located at the upper end of the second sub-side panel 132, abutting against the second sub-side panel 132, thereby enhancing the structural strength of the second sub-side panel 132 and preventing deformation of the second sub-side panel 132 due to long-term wind impact during air intake.

[0208] In some embodiments, as shown in FIG32 , the length L11 of the second sub-partition 43 in the front-to-back direction is less than or equal to the tenth distance L9. The second sub-side panel 132 can cover the second sub-partition 43 to prevent the first air inlet 11 from becoming smaller when the length L11 of the second sub-partition 43 is greater than the tenth distance L9.

[0209] In some embodiments, as shown in FIG36 , the thickness H1 of the second sub-partition 43 in the up and down directions is any value within the seventh range, such as 3 mm to 8 mm. In this way, the strength of the second sub-partition 43 can be improved and waste of material can be avoided.

[0210] For example, the thickness H1 of the second sub-partition plate 43 in the up-down direction is 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, or 8 mm.

[0211] In some embodiments, as shown in FIG36 , the indoor unit 101 further includes a support column 44 disposed at the rear end of the partition plate 40 , for example, on a side of the partition plate 40 adjacent to the first air chamber 17 . The support column 44 is integral with the partition plate 40 . The support column 44 is configured to enhance the strength of the partition plate 40 . Since vibrations of the volute 81 are transmitted to the partition plate 40 during operation of the fan 82 , increasing the strength of the partition plate 40 can reduce vibrations of the partition plate 40 , thereby reducing noise.

[0212] In some embodiments, the indoor unit 101 may include a plurality of fan assemblies 80 , and the plurality of fan assemblies 80 are spaced apart along the left and right sides, and the number of the vents 41 is the same as the number of the fan assemblies 80 .

[0213] For example, as shown in Figures 31 and 36 , the indoor unit 101 includes two fan assemblies 80 , and two vents 41 are provided on the partition plate 40 . A support column 44 is provided between the two vents 41 .

[0214] In some embodiments, as shown in Figure 36, the sub-partition 40 also includes a positioning portion 45, and the positioning portion 45 is also formed by extending backward from the bottom end of the first sub-partition 42. The positioning portion 45 can be located on at least one side of the second sub-partition 43 in the second direction X.

[0215] Here, the positioning portion 45 is provided with a positioning hole, and the end of the first side panel 13 near the first air inlet can be connected to the positioning hole. By connecting the first side panel 13 to the positioning portion 45, the first side panel 13 can be positioned relative to the partition panel 40, facilitating the connection between the first side panel 13 and the partition panel 40.

[0216] The following describes in detail another indoor unit 101 provided by the present disclosure. The first support member and the volute of the indoor unit 101 are integrated into one piece, which can improve the assembly efficiency of the indoor unit 101.

[0217] Figure 37 is a structural diagram of yet another indoor unit according to some embodiments. Figure 38 is a cross-sectional view of yet another indoor unit according to some embodiments. Figure 39 is another structural diagram of yet another indoor unit according to some embodiments.

[0218] In some embodiments, as shown in Figures 37 and 39 , the fan assembly 80 further includes a motor 83. As shown in Figure 39 , the motor 83 includes a motor body 831 and an output shaft 311. The output shaft 311 is provided on both sides of the motor body 831.

[0219] In some embodiments, the indoor unit 101 includes two fans 82 (as shown in FIG38 ), and a motor 83 is disposed between the two fans 82. The output shafts 311 on both sides of the motor body 831 correspond to each fan 82, so that the output shafts 311 drive the fans 82 to rotate.

[0220] In some embodiments, the indoor unit 101 includes three or more fans 82 to increase the air volume. In this case, the output shaft 311 can be extended to drive the third and subsequent fans 82 to rotate.

[0221] For example, as shown in Figure 39, the indoor unit 101 includes a first fan 321, a second fan 322, and a third fan 323. The first fan 321, the second fan 322, and the third fan 323 are arranged in sequence from left to right. The motor body 831 is disposed between the first fan 321 and the second fan 322. The output shaft 311 on the right side of the motor body 831 is connected to the second fan 322, and the output shaft 311 on the left side of the motor body 831 is connected to the first fan 321.

[0222] Figure 40 is a structural diagram of a volute according to some embodiments. Figure 41 is an exploded view of a volute and a drive shaft according to some embodiments.

[0223] In some embodiments, as shown in Figures 40 to 42, the indoor unit 101 also includes a first support member 335 and a bearing 36, and the fan assembly 80 also includes a drive shaft 35, the left end of the drive shaft 35 is connected to the output shaft 311 through a coupling, and the right end of the drive shaft 35 is connected to the first support member 335 through a bearing 36.

[0224] Typically, the support structure is located on the right side of the third fan 323. During assembly, the support structure needs to be connected to the partition plate first, and then the bearing 36 is installed on the support structure, which is time-consuming.

[0225] In some embodiments of the present disclosure, the first support member 335 and the volute 81 are integrated into one piece, which can avoid reducing the installation steps of the first support member 335 and improve assembly efficiency.

[0226] In some embodiments, as shown in Figures 39 to 41, the first support member 335 is disposed at one end (e.g., the right end) of the volute 81 outside the third fan 323 along the second direction X, and the bearing 36 is disposed in the first support member 335.

[0227] For example, the first support member 335 and the volute 81 are integrated, so the step of connecting the first support member 335 to the partition plate 40 can be omitted, the number of parts is reduced, the assembly efficiency is improved, and the cost of the first support member 335 can be saved.

[0228] In some embodiments, as shown in FIG40 , the volute 81 includes a first volute 813 and a second volute 814 . The first volute 813 and the second volute 814 are connected to house the fan 82 .

[0229] In some embodiments, the partition plate 40 and the first volute 813 may be an integral piece to reduce costs, for example, the partition plate 40 and the first volute 813 may be integrally injection molded.

[0230] 41 and 42 , the first support member 335 includes a first support portion 336 and a second support portion 337. The first support portion 336 is provided at the right end of the first volute 813, and the second support portion 337 is provided at the right end of the second volute 814. When the first volute 813 is connected to the second volute 814, the first support portion 336 is connected to the second support portion 337.

[0231] For example, the first volute 813 is located at the upper end of the second volute 814 , the first volute 813 and the second volute 814 are snap-connected, and the first support portion 336 is located at the upper end of the second support portion 337 .

[0232] Figure 42 is a structural diagram of a first volute according to some embodiments. Figure 43 is a structural diagram of a second volute according to some embodiments. In some embodiments, as shown in Figures 42 and 43, the first support portion 336 includes a first accommodating portion 3361, with the opening of the first accommodating portion 3361 facing downward. The second support portion 337 includes a second accommodating portion 3371, with the opening of the second accommodating portion 3371 facing upward.

[0233] When the first volute 813 is connected to the second volute 814, the first support portion 336 is connected to the second support portion 337, and the first accommodating portion 3361 is communicated with the second accommodating portion 3371, and the first accommodating portion 3361 and the second accommodating portion 3371 form an accommodating space; the right end of the drive shaft 35 is arranged in the accommodating space through the bearing 36.

[0234] In some embodiments, as shown in Figures 42 and 43, the first support portion 336 further includes a first positioning portion 3362, and the second support portion 337 includes a second positioning portion 3372. The first positioning portion 3362 and the second positioning portion 3372 cooperate with each other to achieve positioning of the first support portion 336 and the second support portion 337. For example, the first positioning portion 3362 is a slot, and the second positioning portion 3372 is a clip corresponding to the slot, and the second positioning portion 3372 is inserted into the first positioning portion 3362.

[0235] It should be noted that the above description mainly uses the example of the first support portion 336 including the first positioning portion 3362 and the second support portion 337 including the second positioning portion 3372. Of course, in some embodiments, the first support portion 336 may include the second positioning portion 3372, and the second support portion 337 may include the first positioning portion 3362 to achieve positioning between the first support portion 336 and the second support portion 337, but this disclosure is not limited to this.

[0236] In some embodiments, as shown in Figures 42 and 43, the first support portion 336 further includes a first clamping portion 3363, and the second support portion 337 further includes a second clamping portion 3373. The first clamping portion 3363 and the second clamping portion 3373 are interconnected to achieve the connection between the first support portion 336 and the second support portion 337. For example, the first clamping portion 3363 includes a slot, and the second clamping portion 3373 includes a buckle, which is engaged with the slot to achieve the clamping connection between the first support portion 336 and the second support portion 337. The provision of the clamping structure can avoid the use of screws, thereby improving the efficiency of assembling the first support portion 336 and the second support portion 337.

[0237] In some embodiments, when the second clamping portion 3373 includes a buckle, the second clamping portion 3373 is roughly U-shaped, so that when repairing or disassembling the volute 81, the second clamping portion 3373 can be pressed to disengage the second clamping portion 3373 from the first clamping portion 3363.

[0238] It should be noted that the above text mainly uses the example that the first support part 336 includes the first clamping part 3363 and the second support part 337 includes the second clamping part 3373 for explanation. Of course, in some embodiments, the first support part 336 includes the second clamping part 3373 and the second support part 337 includes the first clamping part 3363 to achieve the clamping between the first support part 336 and the second support part 337. This is not limited in the present disclosure.

[0239] In some embodiments, the first positioning portion 3362 is located on the front side of the first accommodating portion 3361, the first clamping portion 3363 is located on the rear side of the first accommodating portion 3361, the second positioning portion 3372 is located on the front side of the second accommodating portion 3371, and the second clamping portion 3373 is located on the rear side of the second accommodating portion 3371.

[0240] In some embodiments, the first support portion 336 and the second support portion 337 may be connected by screws, thereby increasing the reliability of the connection between the first support portion 336 and the second support portion 337 .

[0241] In some embodiments of the present disclosure, the first support portion 336 and the second support portion 337 are connected by a positioning structure (e.g., the first positioning portion 3362 and the second positioning portion 3372) and a clamping structure (e.g., the first clamping portion 3363 and the second clamping portion 3373), thereby connecting the first volute 813 and the second volute 814. This simplifies the connection structure of the fan assembly 80 and improves assembly efficiency.

[0242] Figure 44 is a structural diagram of the volute at another angle according to some embodiments. In some embodiments, as shown in Figure 44, the indoor unit 101 also includes a second support member 350. The second support member 350 and the first support member 335 are arranged along the axial direction of the volute 81 and correspond to the first support member 335. The second support member 350 includes a first connector 338 and a second connector 339. The first connector 338 is formed by extending from the right end of the volute 81 to the right. In some embodiments, the second support member 350 includes two first connectors 338, which are respectively connected to the front and rear sides of the air intake port of the volute 81.

[0243] The second connector 339 is connected to the first connector 338 at an end (e.g., the right end) away from the volute 81. The right end of the drive shaft 35 is connected to the second connector 339 via a bearing 36. The first connector 338 creates a gap between the second connector 339 and the volute 81, preventing the first support member 335 from blocking the airflow into the volute 81.

[0244] Figure 45 is a perspective view of a third support portion according to some embodiments. Figure 46 is another perspective view of a third support portion according to some embodiments.

[0245] In some embodiments, as shown in FIG. 41 , FIG. 45 , and FIG. 46 , the indoor unit 101 further includes a third support portion 37 , the bearing 36 is mounted in the third support portion 37 , and the third support portion 37 is disposed in the first support member 335 .

[0246] The third support portion 37 includes a first sub-support portion 371 and a second sub-support portion 372. The first sub-support portion 371 is generally annular, and the bearing 36 is mounted within the first sub-support portion 371. The second sub-support portion 372 is disposed on a side of the first sub-support portion 371 that is adjacent to the first support portion 336 and is connected to the first support portion 336. For example, the second sub-support portion 372 is formed by extending a portion of the first sub-support portion 371 that is adjacent to or distal from the first support portion 336 in the vertical direction.

[0247] Figure 47 is an exploded view of the first volute and support ring according to some embodiments. In some embodiments, as shown in Figures 42, 46, and 47, the second sub-support portion 372 is inserted into the first accommodating portion 3361. The second sub-support portion 372 and the first accommodating portion 3361 are both roughly square in shape. The cooperation between the second sub-support portion 372 and the first accommodating portion 3361 allows the third support portion 37 to be positioned laterally within the first support portion 336. Furthermore, the connection between the second support portion 337 and the first support portion 336 allows the third support portion 37 to be positioned vertically.

[0248] In some embodiments, the second sub-support portion 372 includes a fourth sub-support portion 373 and a fifth sub-support portion 374. The fourth sub-support portion 373 and the fifth sub-support portion 374 are located on either side of the first sub-support portion 371 in the left-right direction, with a gap between the fourth sub-support portion 373 and the fifth sub-support portion 374. The fifth sub-support portion 374 is provided with a third clip 3741, and the sidewall of the first accommodating portion 3361 is provided with a fourth clip 3364. The third clip 3741 and the fourth clip 3364 cooperate to achieve insertion and connection between the second sub-support portion 372 and the first accommodating portion. For example, the third clip 3741 includes a buckle, and the fourth clip 3364 includes a groove corresponding to the buckle. The fifth sub-support portion 374 can be deformed during the clamping process, and the third clamping portion 3741 can be pressed to the left from the outside of the fourth clamping portion 3364, so that the third clamping portion 3741 can be disengaged from the fourth clamping portion 3364 to remove the third support portion 37 from the first accommodating portion 3361.

[0249] For example, the fourth sub-support portion 373 is located on the left side of the first sub-support portion 371, the fifth sub-support portion 374 is located on the right side of the first sub-support portion 371, the third clamping portion 3741 is located on the right side surface of the fifth sub-support portion 374, and the fourth clamping portion is located on the right side wall of the first accommodating portion 3361.

[0250] In some embodiments, a second partition 3365 is further provided within the first receiving portion 3361, dividing the first receiving portion 3361 into a first sub-groove 3366 and a second sub-groove 3367. The first sub-groove 3366 is located on the left side, and the second sub-groove 3367 is located on the right side. The fourth sub-support portion 373 is inserted into the first sub-groove 3366, and the fifth sub-support portion 374 is inserted into the second sub-groove 3367. A gap is provided between the left side of the fifth sub-support portion 374 and the second partition 3365, thereby allowing room for deformation of the fifth sub-support portion 374 during engagement.

[0251] In some embodiments, the second partition 3365 abuts against the first sub-support portion 371 , thereby forming a vertical limit for the first sub-support portion 371 to prevent the first sub-support portion 371 from deforming during long-term use and affecting the accuracy of the drive shaft 35 .

[0252] In some embodiments, as shown in FIG42 , the volute 81 further includes a plurality of second reinforcing ribs 3368. The plurality of second reinforcing ribs 3368 are disposed on both sides of the second partition plate 3365. The second reinforcing ribs 3368 are configured to enhance the structural strength of the second partition plate 3365, thereby increasing the support strength of the second partition plate 3365 for the bearing 36 and the end of the drive shaft 35.

[0253] In some embodiments, as shown in FIG. 43 , the fifth opening 3731 is disposed on a side (eg, the right side) of the fourth sub-support portion 373 close to the second partition plate 3365 to avoid the reinforcing rib 3368 .

[0254] In some embodiments, a sixth opening 3732 is provided on the side of the fourth sub-support portion 373 perpendicular to the second partition 3365. For example, the sixth opening 3732 is U-shaped with an open end. When the fourth sub-support portion 373 is inserted into the first sub-groove 3366, the fourth sub-support portion 373 will be squeezed and deformed at the sixth opening 3732, thereby preventing the fourth sub-support portion 373 from falling out of the first sub-groove 3366, thereby improving the connection firmness of the third support portion 37 on the first support portion 336.

[0255] In some embodiments, the second sub-support portion 372 further includes a limiting portion 375 , which is connected to the first sub-support portion 371 and is located at one end of the fourth sub-support portion 373 and the fifth sub-support portion 374 .

[0256] The limiting portion 375 extends laterally and abuts against one end of the first accommodating portion 3361 close to the second accommodating portion 3371 to achieve vertical positioning of the third supporting portion 37 in the first accommodating portion 3361 .

[0257] In some embodiments, the outer circumference of the first sub-support portion 371 is stepped in the axial direction. For example, the outer circumference of the first sub-support portion 371 is stepped, with a smaller outer diameter on the left side and a larger outer diameter on the right side. The inner wall of the second accommodating portion 3371 is also stepped to correspond to the first sub-support portion 371. This facilitates the left-right positioning of the third support portion 37.

[0258] In some embodiments, as shown in FIG46 , the volute 81 further includes a mounting portion 3711 . The mounting portion 3711 is disposed on the first sub-support portion 371 and is configured to mount the bearing 36 . A stop plate 3712 is disposed on one side (e.g., the left side) of the first sub-support portion 371 . The stop plate 3712 is configured to prevent the bearing 36 from moving toward one side (e.g., the left side).

[0259] In some embodiments, when assembling the first support member 335, as shown in Figures 41 to 43, Figure 45 and Figure 47, the opening of the first support portion 336 is placed upward, and the second sub-support portion 372 is inserted downward into the first accommodating portion 3361. During this process, the fifth sub-support portion 374 is clamped with the side wall of the first accommodating portion 3361, and then the second support portion 337 is aligned with the first support portion 336, the second positioning portion 3372 cooperates with the first positioning portion 3362, the first clamping portion 3363 cooperates with the second clamping portion 3373, and the screws are tightened between the first volute 813 and the second volute 814 to realize the connection between the first volute 813 and the second volute 814, thereby completing the assembly of the first support member 335 and improving the assembly efficiency.

[0260] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0261] Those skilled in the art will understand that the scope of the present disclosure is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present disclosure. The scope of the present disclosure is limited by the appended claims.

Claims

1. An air conditioner, comprising: case; a fan assembly disposed in the housing and configured to drive air to flow through the heat exchanger; as well as The heat exchanger is disposed in the housing and located at the air outlet side of the fan assembly. The heat exchanger and the fan assembly are arranged in sequence along a first direction. The heat exchanger includes: at least one refrigerant pipe; and A plurality of fins are arranged at intervals along a second direction, and the refrigerant tube passes through the plurality of fins along the second direction and is connected to the plurality of fins; the fin is an integral piece and includes at least four connecting plates, two of the at least four connecting plates are connected in sequence, and there is an angle between any two adjacent connecting plates among the at least four connecting plates, and the opening directions of two adjacent angles of the at least four connecting plates are opposite, the angle is greater than 0 degree and less than 180 degrees, and the first direction is perpendicular to the second direction.

2. The air conditioner according to claim 1, wherein: The at least four connecting pieces include: a first connecting piece; a second connecting piece, wherein an extension direction of the first connecting piece intersects with an extension direction of the second connecting piece and forms a first angle, and the first angle opens along the first direction; a third connecting piece, wherein the extension direction of the second connecting piece intersects with the extension direction of the third connecting piece and forms a second angle, and the second angle opens in the opposite direction to the first direction; a fourth connecting piece, wherein an extension direction of the third connecting piece intersects with an extension direction of the fourth connecting piece and forms a third angle, and the third angle opens along the first direction; The fourth connecting piece, the third connecting piece, the second connecting piece and the first connecting piece are sequentially connected along a third direction, the third direction intersects with the second direction, and the first direction is perpendicular to the second direction and the third direction.

3. The air conditioner according to claim 2, wherein: The fin further comprises: A first edge is an edge of the fin on a side close to the fan assembly; The second edge is an edge of the fin on a side away from the fan assembly, the first edge and the second edge are arranged opposite to each other in the first direction, the first edge and the second edge have the same shape and length, and the first edge and the second edge have the same spacing in the first direction; A third edge is an edge of the first connecting piece away from the second connecting piece and located between the first edge and the second edge; and a fourth edge, which is an edge of the fourth connecting piece away from the third connecting piece and is located between the first edge and the second edge; The third edge and the fourth edge are parallel to each other and extend along the first direction respectively.

4. The air conditioner according to claim 3, wherein: The fin satisfies at least one of the following: A third angle formed by an edge of the first edge on the first connecting sheet and the first direction is any value within a first range; or A fourth angle formed by an edge of the first edge on the fourth connecting sheet and the first direction is any value within a second range; or A fifth angle formed by an edge of the first edge on the first connecting sheet and an edge of the first edge on the fourth connecting sheet is any value within the third range.

5. The air conditioner according to claim 3 or 4, wherein: The plurality of connecting pieces also include: a fifth connecting piece, through which the first connecting piece is connected to the second connecting piece; a sixth connecting piece, through which the second connecting piece is connected to the third connecting piece; and A seventh connecting piece, wherein the third connecting piece is connected to the fourth connecting piece through the seventh connecting piece.

6. The air conditioner according to claim 5, wherein: The fin further includes a transition portion, the transition portion includes a rounded structure or a chamfered structure, and the fin satisfies at least one of the following: The first edges between two adjacent connecting pieces among the plurality of connecting pieces are connected by the transition portion; or A portion of the first edge close to the third edge is connected to the third edge via the transition portion; or A portion of the first edge close to the fourth edge is connected to the fourth edge through the transition portion.

7. The air conditioner according to claim 5 or 6, wherein: The first edge includes an edge on the fifth connecting piece, an edge on the sixth connecting piece, and an edge on the seventh connecting piece. The upper edges are arranged parallel to each other; Among the second edges, an edge on the fifth connecting piece, an edge on the sixth connecting piece, and an edge on the seventh connecting piece are arranged in parallel.

8. The air conditioner according to any one of claims 5 to 7, wherein: An edge of the second edge on the fifth connecting sheet and an edge of the second edge on the seventh connecting sheet are parallel to the third direction and are colinear.

9. The air conditioner according to any one of claims 5 to 8, wherein: The fin satisfies one of the following: The edge of the first edge on the sixth connecting piece is parallel to the first direction and the second direction; and A portion of the edge of the first edge on the sixth connecting piece is recessed toward the second edge, and a portion of the edge of the second edge on the sixth connecting piece is protruding toward a side away from the first edge.

10. The air conditioner according to any one of claims 3 to 9, wherein: The fin further comprises at least one group of mounting holes, the at least one group of mounting holes being arranged on the connecting sheet and penetrating the fin along the thickness direction of the fin; any group of mounting holes in the at least one group of mounting holes comprises a plurality of mounting holes, and two or more mounting holes on any two fins of the plurality of fins are aligned and arranged along the second direction; The at least one refrigerant tube includes a plurality of refrigerant tubes, and the number of the plurality of refrigerant tubes is less than or equal to the number of the mounting holes on the fins, and the refrigerant tubes extend along the second direction and are inserted into the mounting holes arranged in alignment in the plurality of fins; The at least one set of mounting holes meets one of the following requirements: A plurality of mounting holes in any one group of mounting holes are arranged at intervals along an extension direction of the first edge; and Among the multiple mounting holes in any one group of mounting holes, the multiple mounting holes on the first connecting piece, the second connecting piece, the third connecting piece, the fourth connecting piece, the fifth connecting piece and the seventh connecting piece are arranged at intervals along the extension direction of the first edge; Among the two or more mounting holes on the sixth connecting plate, the first part of the mounting holes are arranged at intervals along the extension direction of the first edge, the second part of the mounting holes are located on one side of the first part of the mounting holes in the first direction, and the angle formed by the center line of at least three mounting holes located on the sixth connecting plate is open along the first direction.

11. The air conditioner according to claim 10, wherein: The at least one set of mounting holes comprises: a first group of mounting holes, the first group of mounting holes being close to the first edge, and a line connecting centers of a plurality of mounting holes in the first group of mounting holes being parallel to the first edge; and a second group of mounting holes, the second group of mounting holes being close to the second edge, and a line connecting centers of a plurality of mounting holes in the second group of mounting holes being parallel to the second edge; Wherein, the width of the fin in the first direction is a first distance; The center distance between a mounting hole in the first group of mounting holes and an adjacent mounting hole in the second group of mounting holes is a second distance, and a line connecting the centers of the two adjacent mounting holes is parallel to the first direction; The distance between any mounting hole in the first group of mounting holes and the first edge is the third distance, the distance between any mounting hole in the second group of mounting holes and the second edge is the fourth distance, the first distance is the sum of the second distance, the third distance and the fourth distance, and the third distance is equal to the fourth distance, and the second distance is twice the third distance or the fourth distance.

12. The air conditioner according to claim 10, in, Wherein, the at least one group of mounting holes comprises: a first group of mounting holes, the first group of mounting holes being close to the first edge, and a line connecting centers of a plurality of mounting holes in the first group of mounting holes being parallel to the first edge; and a second group of mounting holes, the second group of mounting holes being close to the second edge, and a line connecting centers of a plurality of mounting holes in the second group of mounting holes being parallel to the second edge; The distance between the first part of the mounting holes in the first group of mounting holes and the first edge is the fifth distance; the distance between the second part of the mounting holes in the first group of mounting holes and the first edge is the sixth distance; the distance between the first part of the mounting holes in the second group of mounting holes and the second edge is the seventh distance; the distance between the second part of the mounting holes in the second group of mounting holes and the second edge is the eighth distance; the eighth distance is greater than the fifth distance, and the seventh distance is less than the sixth distance.

13. The air conditioner according to any one of claims 10 to 12, wherein: Among the plurality of mounting holes in any one group of mounting holes, the center distance between two adjacent mounting holes is the same, and the center distance is an eighth distance; In two adjacent groups of mounting holes, at least two mounting holes in a direction perpendicular to the first edge or the second edge are The center distance is a ninth distance, and the eighth distance is the same as the ninth distance.

14. The air conditioner according to any one of claims 10 to 13, wherein: The mounting hole of the first connecting piece close to the fifth connecting piece is located at the junction of the fifth connecting piece and the first connecting piece, and the mounting hole of the second connecting piece close to the fifth connecting piece is located at the junction of the fifth connecting piece and the second connecting piece; The mounting hole of the sixth connecting piece close to the second connecting piece is located at the junction of the sixth connecting piece and the second connecting piece, and the mounting hole of the third connecting piece close to the sixth connecting piece is located at the junction of the third connecting piece and the sixth connecting piece; The mounting hole of the third connecting piece close to the seventh connecting piece is located at the junction of the third connecting piece and the seventh connecting piece; the mounting hole of the fourth connecting piece close to the seventh connecting piece is located at the junction of the fourth connecting piece and the seventh connecting piece.

15. The air conditioner according to any one of claims 10 to 14, wherein: Compared with the first connecting plate, the second connecting plate, and the third connecting plate, the fourth connecting plate is farther away from the fan assembly, and among the two or more mounting holes on the fourth connecting plate, at least one mounting hole is not connected to the refrigerant pipe.

16. The air conditioner according to any one of claims 3 to 15, wherein: The fin further includes a plurality of reinforcing ribs, which are provided on at least one of the plurality of connecting pieces and are arranged at intervals along an extension direction of the first edge, and the reinforcing ribs extend along the extension direction of the first edge.

17. The air conditioner according to any one of claims 3 to 16, wherein: The fin further comprises: A plurality of mounting holes are provided on the plurality of connecting sheets and penetrate the fins along the thickness direction of the fins; and A plurality of heat-insulating holes are arranged on the plurality of connecting sheets and extend along the extension direction of the first edge. The plurality of heat-insulating holes are arranged between two adjacent groups of mounting holes among the plurality of groups of mounting holes.

18. The air conditioner according to claim 1, further comprising: an outdoor unit, including an outdoor heat exchanger; and Indoor unit, including an indoor heat exchanger, the heat exchanger comprising the indoor heat exchanger and the outdoor heat exchanger, and A pipe assembly is connected to the indoor heat exchanger and is located on one side of the indoor heat exchanger in the second direction. The pipe assembly includes an expansion valve and is configured to connect the indoor heat exchanger to the outdoor unit.

19. The air conditioner according to claim 1, further comprising an indoor unit, wherein: The indoor unit comprises: The housing is provided with an air inlet and an air outlet; and A partition plate, wherein a vent is provided on the partition plate; the partition plate is arranged in the shell to divide the space in the shell into a first air cavity and a second air cavity, the first air cavity and the second air cavity are connected through the vent, the first air cavity is connected to the air inlet, and the fan assembly is arranged in the first air cavity; the indoor heat exchanger is arranged in the second air cavity, and the second air cavity is connected to the air outlet; The fan assembly includes a volute, an exhaust end of the volute is connected to the partition plate, and the connecting surface between the partition plate and the volute is a positioning surface; the distance between the end of the air inlet close to the partition plate and the positioning surface is the tenth distance, and the distance between the end of the air inlet away from the partition plate and the positioning surface is the eleventh distance, and the ratio of the tenth distance to the eleventh distance is any value within the fourth range.

20. The air conditioner according to claim 1, wherein: The fan assembly includes at least three fans disposed in the housing; a motor connected between two adjacent fans among the at least three fans and configured to drive the drive shaft to rotate; The drive shaft is connected to the output shaft of the motor, the drive shaft is connected to the fans of the at least three fans except the two fans connected to the motor, and is configured to drive the fans connected to the drive shaft to rotate; At least three volutes, respectively arranged outside the at least three fans; as well as The support member is located on the side of the outermost volute among the at least three volutes, away from the motor, and is connected to the volute. The support member and the volute are integrated, and one end of the drive shaft away from the output shaft of the motor is rotatably connected to the support member.

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