Ducted air conditioner and control method thereof

Abstract

The invention discloses a duct type air conditioner and a control method thereof. The problem that the actual heat exchange efficiency of an indoor heat exchanger of a duct type air conditioner is low is solved. An indoor heat exchanger of the duct type air conditioner comprises a plurality of heat exchange areas, and an air guide assembly is at least configured to be switched and adjusted between a preset performance position and a preset mute position and used for adjusting the amount of air blown to the heat exchange areas through the air guide assembly. And when the air guide assembly is located at the preset performance position, the absolute value of the difference value between the air outlet temperature of the leeward sides of the multiple heat exchange areas and the preset temperature is smaller than or equal to the preset performance error. And when the air guide assembly is located at the preset mute position, the absolute value of the difference value between the air outlet amount of the leeward sides of the multiple heat exchange areas and the average air outlet amount is smaller than or equal to a preset mute error. The indoor unit of the ducted air conditioner is high in heat exchange efficiency and low in noise.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a duct air conditioner and a control method thereof. Background Art

[0002] The indoor unit of the duct air conditioner is a duct air conditioner. Due to the advantages of the duct air conditioner such as concealed installation and easy coordination with home decoration ceiling, the duct air conditioner has better aesthetics when installed indoors.

[0003] In the shell of the duct unit, the fan used to drive air to flow through the indoor heat exchanger is usually a centrifugal fan structure, which has the characteristics of small size, low noise and high wind pressure.

[0004] Since the exhaust ports of multiple centrifugal fans are arranged at intervals in the shell and are arranged near the upper side of the shell, the main windward area of ​​the indoor heat exchanger aligned with the exhaust ports in the front-to-back direction has a large air volume. However, in other areas of the indoor heat exchanger, such as the lower side or left and right sides of the main windward area, the air volume of the indoor heat exchanger at this position is small, that is, when the refrigerant flows through the indoor heat exchanger in this area, it cannot fully absorb or release heat, resulting in a low actual heat exchange efficiency of the indoor heat exchanger as a whole. Summary of the invention

[0005] The object of the present invention is to provide a duct air conditioner and a control method thereof, aiming to solve the problem of low actual heat exchange efficiency of the indoor heat exchanger of the duct air conditioner.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] On the one hand, the present invention provides a duct air conditioner, including an indoor unit, the indoor unit including a housing, an indoor heat exchanger, a fan assembly and an air guide assembly. The housing has an installation cavity, the indoor heat exchanger is located in the installation cavity, the fan assembly is located in the installation cavity and is spaced apart from the indoor heat exchanger. The air guide assembly is installed between the fan assembly and the indoor heat exchanger, and the fan assembly is used to drive air to blow to the indoor heat exchanger through the air guide assembly.

[0008] The indoor heat exchanger includes a plurality of heat exchange zones, and the air guide component is at least configured to switch between a preset performance position and a preset silent position, and is used to adjust the amount of air blown to the plurality of heat exchange zones through the air guide component. When the air guide component is located at the preset performance position, the absolute value of the difference between the outlet air temperature on the leeward side of the plurality of heat exchange zones and the preset temperature is less than or equal to the preset performance error. When the air guide component is located at the preset silent position, the absolute value of the difference between the outlet air volume on the leeward side of the plurality of heat exchange zones and the average outlet air volume is less than or equal to the preset silent error.

[0009] In the indoor unit of the duct air conditioner, by setting an air guide assembly between the fan assembly and the indoor heat exchanger, the direction of the air blown out by the fan assembly can be adjusted so that the air can be blown to the windward side of the indoor heat exchanger in the installation cavity. In this way, when the refrigerant flows through the indoor heat exchanger, it can exchange heat with the air flowing through it in multiple areas of the indoor heat exchanger, such as releasing or absorbing heat, so that the indoor unit can efficiently cool or heat the surrounding environment.

[0010] On this basis, further configuration adjustments can be made to the air guide group. For example, the air guide component can be configured to switch between a preset performance position and a preset silent position to adjust the amount of air blown to multiple heat exchange zones through the air guide component.

[0011] For example, when the air guide assembly is at the preset silent position, the air volume of multiple heat exchange zones of the indoor heat exchanger can be distributed more evenly, such as detecting the wind speed (or wind pressure) on the leeward side of multiple heat exchange zones, so that the absolute value of the difference between the air volume of multiple heat exchange zones and the average air volume is less than or equal to the preset silent error. In this way, the overall air volume of the indoor heat exchanger is evenly distributed, and while ensuring that the indoor heat exchanger has a high heat exchange efficiency, the turbulent noise caused by the high wind speed in some heat exchange zones is avoided, so that the indoor unit can continue to operate more smoothly and quietly.

[0012] When the air guide assembly is in the preset performance position, the outlet air temperatures of multiple heat exchange zones of the indoor heat exchanger can be distributed more evenly. For example, the outlet air temperatures on the leeward side of multiple heat exchange zones can be detected so that the absolute value of the difference between the outlet air temperatures of multiple heat exchange zones and the preset temperature is less than or equal to the preset performance error. In this way, when the air flows through multiple heat exchange zones of the indoor heat exchanger from back to front, it can fully exchange heat with the refrigerant flowing through the indoor heat exchanger, thereby avoiding excessive heat exchange in some heat exchange zones or insufficient heat exchange in some heat exchange zones, which is conducive to further improving the overall heat exchange efficiency of the indoor heat exchanger and the air conditioner.

[0013] On the other hand, the present invention also provides a control method for a duct air conditioner, comprising: detecting whether the indoor unit is switched to a performance control mode. If so, controlling the air guide component to be adjusted to a preset performance position. When the indoor unit is in the performance control mode and the air guide component is located at a preset performance position: obtaining multiple outlet air temperatures of multiple heat exchange zones. Determining whether the absolute value of the difference between the outlet air temperature and the preset temperature is greater than a first preset error. If so, adjusting the position state of the air guide component so that the absolute value of the difference between the outlet air temperature and the preset temperature is less than or equal to the first preset error.

[0014] Since the control method of the duct air conditioner provided in the embodiment of the present application is used to control the duct air conditioner in the above aspect, the two can solve the same technical problem and achieve the same technical effect. Moreover, the heat exchange efficiency of the indoor unit can be further improved through the above control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic diagram of a refrigerant flow path of an air conditioner provided in an embodiment of the present application;

[0017] Figure 2 A side view of an indoor unit of a first air conditioner provided in the present application example;

[0018] Figure 3 for Figure 2 A three-dimensional structural schematic diagram of an indoor heat exchanger shown in ;

[0019] Figure 4 A side view of a second indoor unit provided in an embodiment of the present application;

[0020] Figure 5 A side view of a third indoor unit provided in an embodiment of the present application;

[0021] Figure 6 for Figure 5 A three-dimensional structural schematic diagram of an indoor heat exchanger shown in ;

[0022] Figure 7 A side view of a fourth indoor unit according to an embodiment of the present application;

[0023] Figure 8 for Figure 5 A top view showing an indoor unit having an air guide assembly installed therein;

[0024] Fig. 9 for Figure 6 A side view of the indoor heat exchanger shown;

[0025] Fig.10 for Figure 8 A front view of the air guide assembly shown in ;

[0026] Fig.11 for Figure 5 A side view of an indoor unit with an air guide assembly installed therein is shown;

[0027] Fig.12 An air conditioner provided in an embodiment of the present application includes a connection structure diagram of a controller;

[0028] Fig.13 A flow chart of the first control method provided in the embodiment of the present application;

[0029] Fig.14 A flow chart of the second control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] An air conditioner is a device that can adjust and control the temperature, humidity and circulating air of the ambient air in a building or structure.

[0031] On the one hand, if Figure 1 As shown, the present application provides a duct air conditioner (hereinafter referred to as air conditioner 100), which may include a compressor 11, a four-way valve 12, an outdoor heat exchanger 13, a pressure reducer 14, and an indoor heat exchanger 15. Exemplarily, the four-way valve 12 may have a first port A, a second port B, a third port C, and a fourth port D, and the compressor 11 may have a return air end and an outlet air end, such as an end flowing into the compressor 11 in the direction of the arrow is the return air end of the compressor, and the other end is the outlet air end of the compressor 11.

[0032] The return air end of the compressor 11 can be connected to the first port A of the four-way valve, the outlet air end of the compressor 11 can be connected to the second port B of the four-way valve, the third port C of the four-way valve can be connected to one end of the outdoor heat exchanger 13, the other end of the outdoor heat exchanger 13 can be connected to one end of the indoor heat exchanger 15 through the pressure reducer 14, and the other end of the indoor heat exchanger 15 can be connected to the fourth port D of the four-way valve.

[0033] Reference Figure 1 The air conditioner 100 may include an outdoor unit 20 and an indoor unit 30. For example, the compressor 11, the four-way valve 12 and the outdoor heat exchanger 13 may be part of the outdoor unit 20, and the corresponding indoor heat exchanger 15 may be part of the indoor unit 30. The pressure reducer 14 may be a throttling device such as a capillary tube or an electronic expansion valve. The pressure reducer 14 may be Figure 1 As shown, the pressure reducer 14 can be installed in the indoor unit 30, or it can be installed in the refrigerant pipeline between the outdoor unit 20 and the indoor unit 30. It is only necessary to make the pressure reducer 14 between the indoor heat exchanger 15 and the outdoor heat exchanger 13 along the flow direction of the refrigerant.

[0034] Based on this, driven by the compressor 11, the refrigerant can circulate between the indoor unit 30 and the outdoor unit 20 through the pipeline and produce a reversible phase change. While the refrigerant produces a phase change, it can release or absorb heat through the heat exchanger.

[0035] In this way, the refrigerant can exchange heat with the surrounding medium (such as air) in the outdoor unit 20 through the outdoor heat exchanger 13, thereby releasing heat and heating the surrounding air (or absorbing heat to cool the surrounding air). The refrigerant can exchange heat with the surrounding air in the indoor unit 30 through the indoor heat exchanger 15, thereby absorbing heat to cool the surrounding air (or releasing heat to heat the surrounding air), thereby achieving efficient cooling (or heating) of the air conditioner 100.

[0036] It should be noted that by adjusting the connection direction of the four-way valve 12, the air conditioner 100 can be operated in a cooling state (such as Figure 1 The solid line flow direction of the refrigerant in the Figure 1 In addition, the function of the four-way valve 12 can be replaced by other switching devices or flow paths, or the four-way valve is not required and the air conditioner 100 is configured as a single cooling machine structure, which is not limited in this application.

[0037] It should be noted that the indoor unit 30 of the air conditioner 100 may be a duct structure, and the indoor unit 30 of the duct structure is usually installed and arranged in conjunction with a ceiling structure, such as concealed installation of the indoor unit 30 in conjunction with a ceiling structure. This has the advantages of concealed installation, easy coordination with a home ceiling, and good aesthetics.

[0038] like Figure 2 As shown, the indoor unit 30 of the duct structure may include a housing 31, a fan assembly 32 and an indoor heat exchanger 15, the housing 31 may have an installation cavity 311, and the fan assembly 32 and the indoor heat exchanger 15 may be arranged at intervals in the installation cavity 311. Taking the fan assembly 32 and the indoor heat exchanger 15 in the installation cavity 311 as an example of being arranged at intervals in the front-to-back direction, the housing 31 may be provided with an air outlet 312 at the front side of the installation cavity 311, and the housing 31 may be provided with an air return port 313 at the rear side of the installation cavity 311, so that the fan assembly 32 can drive air to enter the installation cavity 311 from the air return port 313, and the air is discharged from the air outlet 312 after passing through the indoor heat exchanger 15.

[0039] For example, in the installation cavity 311, the indoor heat exchanger 15 can be arranged close to the front air outlet 312, and the fan assembly 32 can be arranged close to the rear air return port 313. When the air conditioner is running, the fan assembly 32 can rotate to drive air from the return air port 313 into the installation cavity 311, and the air can be blown from the air outlet end of the fan assembly 32 to the indoor heat exchanger 15, so that the refrigerant flowing in the indoor heat exchanger 15 can quickly exchange heat with the air flowing through it.

[0040] like Figure 2 and Figure 3 As shown, the length direction of the indoor heat exchanger 15 and the shell 31 can be the left-right direction, and the indoor heat exchanger 15 can include a plurality of refrigerant tubes 151 and a plurality of fins 152. The refrigerant tubes 151 can extend in the left-right direction, and the fins 152 can be an integrated planar sheet structure. The plurality of fins 152 can be spaced apart in the left-right direction, and the refrigerant tube 151 can penetrate the plurality of fins 152 in the left-right direction and be in contact with and connected to the plurality of fins 152. For example, the refrigerant tube 151 and the fins 152 can be in contact and fixed by brazing process to form an indoor heat exchanger 15 with an integrated structure.

[0041] For example, a plurality of plug holes (or plug slots) may be provided on a fin 152, and the plurality of plug holes (or plug slots) on the plurality of fins 152 may be arranged in an aligned manner in the left-right direction, so that the refrigerant tube 151 passing through the plug hole and passing through the fin 152 may be in contact with the fin 152 while the plurality of refrigerant tubes 151 may be distributed at intervals in the plane of the fin 152. In this way, the plurality of refrigerant tubes 151 may be connected to form one or more refrigerant passages, so that the flowing refrigerant may be in full contact with the air through the refrigerant tube 151 and the fin 152, thereby improving the heat exchange efficiency of the indoor heat exchanger 15. The refrigerant tube may be a round tube structure or a microchannel flat tube structure made of copper or aluminum metal or alloy.

[0042] Taking the fin 152 as a rectangular sheet structure as an example, a plurality of fins 152 and a plurality of refrigerant tubes 151 can be connected to form a Figure 3 The flat plate heat exchanger shown. Figure 2 In the installation cavity 311 shown, since the height dimension of the installation cavity 311 in the up and down directions is limited, the upper edge of the indoor heat exchanger 15 of the flat plate structure can be arranged to be tilted forward, and the lower edge of the indoor heat exchanger 15 can be arranged backward to increase the heat exchange area of ​​the indoor heat exchanger 15 within the limited height space.

[0043] Alternatively, the length and / or width of the fin 152 may be reduced, and a smaller flat plate heat exchanger may be formed by using a plurality of smaller fins 152 and a plurality of refrigerant tubes 151. Figure 4As shown, two flat plate heat exchangers with smaller fins can be spliced ​​and installed to form an indoor heat exchanger 15 with a V-shaped structure whose opening faces the fan assembly 32, which can effectively increase the heat exchange area of ​​the indoor heat exchanger 15 in the installation cavity 311.

[0044] In addition, three or four smaller flat plate heat exchangers may be spliced ​​and installed in a cross section perpendicular to the left and right directions to form an indoor heat exchanger 15 with an approximately C-shaped structure, which may also increase the heat exchange area of ​​the indoor heat exchanger 15 in the installation cavity 311.

[0045] Since the height dimension of the interior of the installation cavity 311 in the vertical direction is generally about 17 cm, in order to further increase the heat exchange area of ​​the indoor heat exchanger 15 in the installation cavity 311, as shown in FIG. Figure 5 As shown, the fin 152 may include at least seven connecting pieces, namely, a first connecting piece 1521, a second connecting piece 1522, a third connecting piece 1523, a fourth connecting piece 1524, a fifth connecting piece 1525, a sixth connecting piece 1526 and a seventh connecting piece 1527, which are connected in sequence from top to bottom.

[0046] Exemplarily, the first connecting piece 1521 can be bent and connected to the third connecting piece 1523 through the second connecting piece 1522, so that the angle opening (such as the first angle opening) formed by the first connecting piece 1521 and the third connecting piece 1523 can be set forward or backward.

[0047] The third connecting piece 1523 can be bent and connected to the fifth connecting piece 1525 through the fourth connecting piece 1524, such as the end of the third connecting piece 1523 away from the second connecting piece 1522 can be connected to the end of the fourth connecting piece 1524 away from the fifth connecting piece 1525, so that the angle opening (such as the second angle opening) formed by the third connecting piece 1523 and the fifth connecting piece 1525 can be set forward or backward. In the same indoor heat exchanger 15, the direction of the first angle opening and the direction of the second opening angle are set in the opposite direction along the front-to-back direction.

[0048] The fifth connecting piece 1525 can be bent and connected with the seventh connecting piece 1527 through the sixth connecting piece 1526, such as the end of the fifth connecting piece 1525 away from the fourth connecting piece 1524 can be connected with the end of the sixth connecting piece 1526 away from the seventh connecting piece 1527, so that the angle opening (such as the third angle opening) formed by the fifth connecting piece 1525 and the seventh connecting piece 1527 can be set forward or backward. In the same indoor heat exchanger 15, the direction of the third angle opening is the same as the direction of the first opening angle.

[0049] It should be noted that, for the fins 152, from top to bottom, the first connecting piece 1521 to the seventh connecting piece 1527 can also be described as the first connecting piece to the seventh connecting piece in the connection order. Alternatively, from bottom to top, the seventh connecting piece 1527 to the first connecting piece 1521 can also be described as the first connecting piece to the seventh connecting piece in the connection order.

[0050] In the installation cavity 311, since the fin 152 can include seven connecting pieces that are bent and connected in sequence, the fin 152 can have a larger length dimension through a multi-fold structure (ie, a W-shaped sheet structure) within a limited height space. Figure 5 and Figure 6 By combining the multi-folded fins 152 with the multiple refrigerant tubes 151 that penetrate and contact each other, the arrangement length of the refrigerant tubes 151 and the arrangement area of ​​the fins 152 can be further increased in the installation cavity 311 with limited height space, which is equivalent to greatly increasing the heat exchange area of ​​the indoor heat exchanger 15.

[0051] For example, Figure 5 and Figure 6 As shown, in the installation cavity 311 , the first angle opening and the second angle opening can be arranged backward toward the fan assembly 32 , which is beneficial to improving the heat exchange efficiency of the indoor heat exchanger 15 .

[0052] In some other embodiments, such as Figure 7 As shown, the integrated fin 152 may also include only two or three connecting pieces. Taking the fin 152 as an example, which includes three connecting pieces connected sequentially from top to bottom, the first connecting piece may be bent and connected to the third connecting piece through the second connecting piece, so that the indoor heat exchanger 15 forms an open structure arranged backward or forward.

[0053] Among them, Figure 7 In the fin 152 shown, the second connecting piece can be an arc-shaped bent structure, so that the fin 152 can be an arc-shaped bent sheet structure with an opening facing backward, which is approximately a C-shaped structure with a large opening angle. This is beneficial to reducing turbulent noise at the edge of the windward side (i.e., the rear side) of the fin 152.

[0054] Alternatively, the fins 152 may be connected by bending two connecting pieces to form a V-shaped sheet structure. In this way, the overall structure of the indoor heat exchanger 15 is similar to Figure 4 The V-shaped heat exchanger with spliced ​​structure shown in the figure is different in that Figure 4 The indoor heat exchanger 15 in the embodiment is a spliced ​​split structure, while the indoor heat exchanger 15 in this embodiment is an integrated structure formed by the fins 152 of the V-shaped structure.

[0055] In some embodiments, Figure 7As shown, the fan assembly 32 located in the installation cavity 311 can be a centrifugal fan structure, and the fan assembly 32 can include a volute 321 and a centrifugal impeller 322, and the centrifugal impeller 322 is installed in the volute 321. The volute 321 has an exhaust port 323 and an air inlet 324. An exhaust port 323 of a volute 321 can be arranged forward toward the indoor heat exchanger 15. Exemplarily, the exhaust port 323 can be arranged near the upper side of the installation cavity 311 in the up-down direction, and the volute 321 can be provided with an air inlet 324 on at least one side of the axial direction (i.e., the left-right direction).

[0056] In the installation cavity 311, the axial direction of the centrifugal impeller 322 can be arranged parallel to the left-right direction, that is, the centrifugal impeller 322 can rotate around an axis parallel to the left-right direction, and is used to drive air to flow through the return air port 313 and the air inlet 324 in sequence, and can be blown toward the indoor heat exchanger 15 from the exhaust port 323. Among them, the axial direction of the centrifugal impeller 322 can also be regarded as the axial direction of the fan assembly 32. Since the centrifugal fan has the characteristics of small size, low noise and high wind pressure, it is beneficial to increase the air circulation in the duct fan with limited height space.

[0057] In some embodiments, Figure 7 and Figure 8 As shown, the fan assembly 32 may include a plurality of volutes 321 and a plurality of centrifugal impellers 322, and the plurality of volutes 321 may be spaced apart in the left-right direction, and a centrifugal impeller 322 may be installed in a volute 321. That is, the plurality of volutes 321 may be arranged in a one-to-one correspondence with the plurality of centrifugal impellers 322, so that the rotating centrifugal impellers 322 may drive the air to blow from the exhaust port 323 to the indoor heat exchanger 15, and at this time, the exhaust ports 323 of the plurality of volutes 321 are also spaced apart in the left-right direction, that is, the plurality of exhaust ports 323 of the fan assembly 32 are spaced apart in the left-right direction.

[0058] like Figure 7 and Figure 8 As shown, the fan assembly 32 may further include a motor 325, which may be arranged between two adjacent volutes 321, and the output shaft of the motor 325 may extend to both ends in the left-right direction and be inserted into two, three or more volutes 321. The output shaft of the motor 325 may be connected to a plurality of centrifugal impellers 322, and may drive the plurality of centrifugal impellers 322 to rotate synchronously, so that the plurality of centrifugal impellers 322 may be driven to rotate by one motor 325, which has a simple structure and reduces the number of motors 325 to be set.

[0059] Alternatively, the number of motors 325 can be multiple and the same as the number of volutes 321, that is, one motor 325 can be installed in one volute 321, and the motor 325 can drive the centrifugal impeller 322 in the volute 321 to rotate, so as to flexibly control the air output of each exhaust port 323.

[0060] In some other embodiments, the fan assembly 32 may also be an axial flow fan structure, for example, the axial direction of the axial flow fan may be arranged parallel to the front-to-back direction, and the axial flow fan may blow air forward and make the air flow through the front indoor heat exchanger 15. A plurality of axial flow fans may be distributed at intervals along the left-right direction, in which case the air outlet side in front of an axial flow fan is equivalent to the exhaust port of a fan assembly 32, and the axial direction of the axial flow fan is the front-to-back direction.

[0061] In the installation cavity 311, since the vertical projection of one or more exhaust ports 323 of the fan assembly 32 in the front-to-back direction can only cover a part of the windward side (i.e., the rear side) of the indoor heat exchanger 15, the indoor heat exchanger 15 has a larger air volume in the area aligned with the exhaust ports 323 in the front-to-back direction. However, in other areas of the indoor heat exchanger 15, such as the lower area of ​​the indoor heat exchanger, the left and right ends of the indoor heat exchanger, and the area between two adjacent exhaust ports 323 on the windward side of the indoor heat exchanger 15 corresponding to the front, the indoor heat exchanger 15 has a smaller air volume in the above-mentioned area, so that the refrigerant cannot fully release or absorb heat when flowing through the refrigerant pipe 151 in this area, resulting in a lower overall heat exchange efficiency of the indoor heat exchanger 15.

[0062] In order to solve the above problems, Figure 8 As shown, the indoor unit 30 also includes an air guide assembly 33, which can be installed between the fan assembly 32 and the indoor heat exchanger 15 along the front-to-back direction, so that the fan assembly 32 can drive the air to blow toward the indoor heat exchanger 15 through the air guide assembly 33.

[0063] The indoor heat exchanger 15 may have multiple heat exchange zones, and the multiple heat exchange zones may be different positions of the indoor heat exchanger 15. The indoor heat exchangers 15 in different heat exchange zones may partially overlap or may not overlap. Correspondingly, the air guide component 33 is at least configured to switch between a preset performance position and a preset silent position, so as to adjust the amount of air blown to the multiple heat exchange zones through the air guide component 33.

[0064] Among them, when the air guide component 33 is located at the preset silent position, the absolute value of the difference between the air volume on the leeward side of the multiple heat exchange zones and the preset air volume is less than or equal to the preset silent error. That is, when the air guide component 33 is at the preset silent position, the air blown to each heat exchange zone can be differentially adjusted so that after the air flowing out of the leeward side of the multiple heat exchange zones exchanges heat with the indoor heat exchanger 15, the difference between the air volume flowing out of the multiple heat exchange zones and the average air volume is less than or equal to the preset silent error.

[0065] Since the indoor heat exchangers 15 corresponding to different heat exchange zones have different wind resistances during the process of air flowing through the indoor heat exchanger 15, in order to avoid the indoor heat exchanger 15 generating a high air outlet speed locally at the air outlet side, thereby causing a large air outlet noise, by adjusting the air guide component 33 to the preset silent position, the wind speed (or air volume) at the air outlet side of the indoor heat exchanger 15 can be distributed more evenly, while ensuring that the indoor heat exchanger 15 has a high heat exchange efficiency, it is avoided that some heat exchange zones have a large air volume (i.e., the wind speed at this position is large), which is conducive to reducing turbulent noise under high wind speed conditions, so that the indoor unit 30 can continue to operate more smoothly and quietly.

[0066] When the air guide component 33 is located at the preset performance position, the absolute value of the difference between the outlet air temperature on the leeward side of the multiple heat exchange zones and the preset temperature is less than or equal to the preset performance error. That is, when the air guide component 33 is at the preset performance position, the amount of air blown to each heat exchange zone can be differentially adjusted, so that the air flowing out of the leeward side of the multiple heat exchange zones, after heat exchange with the indoor heat exchanger 15, the air temperature flowing out of the multiple heat exchange zones tends to the preset temperature, thereby avoiding the occurrence of local excessive heat exchange or local insufficient heat exchange, which is conducive to further improving the overall heat exchange efficiency of the indoor heat exchanger 15.

[0067] Among them, Figure 8 and Fig. 9 As shown, the multiple heat exchange areas of the indoor heat exchanger 15 may include at least one of multiple first heat exchange areas 153 and multiple second heat exchange areas 154. For example, the indoor heat exchanger 15 may be divided into multiple first heat exchange areas 153 only in the up-down direction, or the indoor heat exchanger 15 may be distributed with multiple second heat exchange areas 154 only in the left-right direction, or the indoor heat exchanger 15 may include multiple second heat exchange areas 154 distributed in the left-right direction and multiple first heat exchange areas 153 distributed in the up-down direction at the same time.

[0068] like Fig. 9 As shown, Fig. 9 for Figure 6 A side view of the indoor heat exchanger 15 shown in FIG. 1 shows that the seven connecting pieces of the fins 152 are distributed sequentially from top to bottom. The connecting pieces and the refrigerant tube 151 at the same height position can be a first heat exchange area 153 of the indoor heat exchanger 15. That is, the first connecting piece 1521 of the multiple fins 152 and the plugged refrigerant tube 151 can be a first heat exchange area 153, the second connecting piece 1522 of the multiple fins 152 and the plugged refrigerant tube 151 can be a first heat exchange area 153, and the seventh connecting piece 1527 of the multiple fins 152 can also be a first heat exchange area 153, that is, Fig. 9 The indoor heat exchanger 15 shown may include seven first heat exchange areas 153 sequentially distributed in the up-down direction.

[0069] like Figure 8 As shown, the indoor heat exchanger 15 may also include a plurality of second heat exchange areas 154 distributed in sequence along the left-right direction. Figure 7 Taking the figure as an example, the area of ​​the indoor heat exchanger 15 aligned with an exhaust port 323 along the front-to-back direction can be divided into one or more second heat exchange areas 154 along the left-to-right direction.

[0070] At the part of the indoor heat exchanger 15 that is aligned forward in the area between two adjacent exhaust ports 323, the part of the indoor heat exchanger 15 can be divided into one or more second heat exchange areas 154 along the left-right direction. At the left end or right end of the indoor heat exchanger 15 (i.e., the part that is not aligned with the exhaust port 323 in the front-to-back direction), one end of the indoor heat exchanger 15 can be divided into one or more second heat exchange areas 154 along the left-to-right direction.

[0071] For example, Figure 3 , Figure 4 and Figure 7 The indoor heat exchanger 15 in the embodiment may be divided into at least three first heat exchange zones along the vertical direction. Alternatively, Figure 6 The indoor heat exchanger 15 shown in the figure may also be simplified, such as being divided into three or four first heat exchange zones along the top and bottom, which is not limited in the present application.

[0072] It should be noted that the preset temperature may be a cooling temperature or a heating temperature set by the user for the indoor unit 20. For example, if the cooling temperature set by the user is 26°C, the preset temperature may be 16-26°C. If the heating temperature set by the user is 26°C, the preset temperature may be 26-36°C, so as to quickly adjust the indoor temperature.

[0073] In some embodiments, Figure 8 and Fig.10 As shown, the air guide assembly 33 may include a plurality of transverse air guide strips 331 and a plurality of longitudinal air guide strips 332. The plurality of transverse air guide strips 331 may adjust the air volume distribution in the up-down direction on the windward side of the indoor heat exchanger 15 to adjust the air volume blowing to different first heat exchange areas 153 (such as Fig. 9 The plurality of longitudinal air guide strips 332 can adjust the air volume distribution on the windward side of the indoor heat exchanger 15 in the left and right directions to adjust the air volume blown to different second heat exchange areas 154.

[0074] Exemplarily, a plurality of transverse air guide strips 331 may be selectively arranged in the installation cavity 311 between the indoor heat exchanger 15 and the fan assembly 32 to adjust the air volume distribution at the plurality of first heat exchange areas 153 of the indoor heat exchanger 15. Alternatively, a plurality of longitudinal air guide strips 332 may be selectively arranged between the indoor heat exchanger 15 and the fan assembly 32 to adjust the air volume distribution at the plurality of second heat exchange areas 154 of the indoor heat exchanger 15.

[0075] It is also possible to simultaneously arrange multiple transverse air guide strips 331 and multiple longitudinal air guide strips 332 in the installation cavity 311 between the indoor heat exchanger 15 and the fan assembly 32 to adjust the air volume distribution of the indoor heat exchanger 15 in the up and down directions and the left and right directions. This application does not limit this.

[0076] For example, Figure 8 and Fig.11 As shown, the air guide assembly 33 may include a first driving member 333 and a plurality of transverse air guide strips 331. The transverse air guide strips 331 may extend in the accommodating cavity 311 along the left-right direction (i.e., the length direction is parallel to the left-right direction), and the plurality of transverse air guide strips 331 may be spaced apart in the up-down direction. The first driving member 333 may be connected to the transverse air guide strips 331 to control and adjust the position state of the transverse air guide strips 331. For example, the first driving member 333 may drive the plurality of transverse air guide strips 331 to switch and adjust between the first preset performance position and the first preset silent position, so that the air blown out of the exhaust port 323 may be blown to different first heat exchange areas of the indoor heat exchanger 15 through the change of the position state of the plurality of transverse air guide strips 331.

[0077] Among them, the preset performance position may include a first preset performance position and a second preset performance position, and the preset quiet position may include a first preset quiet position and a second preset quiet position.

[0078] When the plurality of transverse air guide strips 331 are at the first preset performance position, the absolute value of the difference between the air outlet temperature on the leeward side of the plurality of first heat exchange areas 153 distributed in the up-down direction and the preset temperature is less than or equal to the preset performance error. When the plurality of transverse air guide strips 331 are at the first preset silent position, the absolute value of the difference between the air outlet volume on the leeward side of the plurality of first heat exchange areas 153 distributed in the up-down direction and the average air outlet volume is less than or equal to the preset silent error.

[0079] Taking the fan assembly 32 as a centrifugal fan structure as an example, since the air outlet 323 is arranged near the upper side of the installation cavity 311, multiple transverse air guide strips 331 can also be spaced and distributed near the upper side of the installation cavity 311 in the installation cavity 311. For example, the top transverse air guide strip 331 can be arranged near the upper edge of the air outlet 323, and the bottom transverse air guide strip 331 can be arranged near the lower edge of the air outlet 323.

[0080] Alternatively, when multiple transverse air guide strips 331 are arranged in the up and down directions, the top transverse air guide strip 331 can be arranged forward, and the bottom transverse air guide strip 331 can be arranged backward, so that the multiple transverse air guide strips 331 can better adjust the flow direction of the air flowing to the indoor heat exchanger 15.

[0081] In this way, the first driving member 333 can drive the transverse air guide strips 331 to rotate around the first axis to adjust the angular position state of one or more transverse air guide strips 331. The first axis is set parallel to the left-right direction, and the first axis is the rotation axis of each transverse air guide strip 331, that is, the plurality of transverse air guide strips 331 have a plurality of different first axes. For example, in a plane perpendicular to the left-right direction, the first driving member 333 can drive one or more transverse air guide strips 331 to rotate clockwise or counterclockwise.

[0082] The first driving member 333 can also adjust the spacing between two adjacent transverse air guide strips 331 in the up-down direction to adjust the spacing position state of one or more transverse air guide strips 331. For example, one of the two adjacent transverse air guide strips 331 can be made to slide in the up-down direction, or two adjacent transverse air guide strips 331 can be adjusted to slide in the up-down direction at the same time to adjust the spacing between the two transverse air guide strips 331 in the up-down direction.

[0083] The transverse air guide strip 331 may be a rectangular plate-shaped structure, or, in a plane perpendicular to the left-right direction, the cross-sectional shape of the transverse air guide strip 331 may be a downwardly curved arc structure. Correspondingly, the longitudinal air guide strip 332 may also be a rectangular plate-shaped structure, or, in a plane perpendicular to the length direction of the longitudinal air guide strip 332, the cross-sectional shape of the longitudinal air guide strip 332 may also be an arc structure.

[0084] In this way, the angular position state and / or the spacing position state and other position states of the lateral air guide strips 331 can be adjusted through the first driving member 333, so that multiple lateral air guide strips 331 can be flexibly switched between the first preset performance position and the first preset silent position.

[0085] like Fig. 9 and Fig.11As shown, taking the fin of the indoor heat exchanger 15 as a seven-segment bending structure as an example, the indoor heat exchanger 15 can be divided into seven first heat exchange areas 153 along the vertical direction, and one first heat exchange area 153 can be set corresponding to one transverse air guide strip 331. For example, from top to bottom, multiple first connecting pieces 1521 corresponding to the first heat exchange area 153 can be set corresponding to the first transverse air guide strip 331, so that the air flowing through the top of the transverse air guide strip 331 can flow forward through the first heat exchange area 153 corresponding to the first connecting piece 1521.

[0086] Correspondingly, from top to bottom, the first heat exchange area 153 corresponding to the second connecting piece 1522 can be set corresponding to the second transverse air guide strip 331, and the air flowing out between the first transverse air guide strip 331 and the second transverse air guide strip 331 can flow forward through the first heat exchange area 153 corresponding to the second connecting piece 1522. By analogy, the first heat exchange area 153 corresponding to the seventh connecting piece 1527 can be set corresponding to the seventh transverse air guide strip 331, and the air flowing out between the sixth transverse air guide strip 331 and the seventh transverse air guide strip 331 can flow through the first heat exchange area 153 corresponding to the seventh connecting piece 1527.

[0087] In this way, by adjusting the angle position state and / or the spacing position state of one or more transverse air guide strips 331 through the first driving member 333, it is convenient to adjust the ventilation volume of multiple first heat exchange areas 153. For example, the transverse air guide strip 331 in the first preset performance position can improve the overall heat exchange efficiency of the indoor heat exchanger 15, so that the outlet air temperature of multiple first heat exchange areas 153 approaches the preset temperature, or the transverse air guide strip 331 in the first preset silent position can reduce the turbulent noise near the indoor heat exchanger 15, so that the outlet air volume of multiple first heat exchange areas 153 approaches the average outlet air volume.

[0088] In some embodiments, Fig.10 and Fig.12 As shown, the air guide assembly 33 may also include a second driving member 334 and a plurality of longitudinal air guide strips 332. The length direction of the longitudinal air guide strips 332 may be arranged perpendicular to the left-right direction, and the plurality of longitudinal air guide strips 332 may be spaced apart along the left-right direction. The second driving member 334 may be connected to the longitudinal air guide strips 332 to control and adjust the position state of the longitudinal air guide strips 332. For example, the second driving member 334 may drive the plurality of longitudinal air guide strips 332 to switch and adjust between the second preset performance position and the second preset silent position, so as to adjust the amount of air blown to different second heat exchange areas.

[0089] When the plurality of longitudinal air guide strips 332 are at the second preset performance position, the absolute value of the difference between the outlet air temperature on the leeward side of the plurality of second heat exchange areas 154 distributed along the left-right direction and the preset temperature is less than or equal to the preset performance error. When the plurality of longitudinal air guide strips 332 are at the second preset silent position, the absolute value of the difference between the outlet air volume on the leeward side of the plurality of second heat exchange areas 154 distributed along the left-right direction and the average outlet air volume is less than or equal to the preset silent error.

[0090] Exemplarily, the second driving member 334 can drive the longitudinal air guide strip 332 to rotate around the second axis to adjust the angular position state of one or more longitudinal air guide strips 332. The second axis is arranged parallel to the length direction of the longitudinal air guide strip 332, and the second axis is the rotation axis of each longitudinal air guide strip 332, that is, the plurality of longitudinal air guide strips 332 have a plurality of different second axes. For example, in a plane perpendicular to the length direction of the longitudinal air guide strip 332, the second driving member 334 can drive one or more longitudinal air guide strips 332 to rotate clockwise or counterclockwise.

[0091] The second driving member 334 can also adjust the spacing between two adjacent longitudinal air guide strips 332 in the left-right direction to adjust the spacing position state of one or more longitudinal air guide strips 332. For example, one of the two adjacent longitudinal air guide strips 332 can be made to slide in the left-right direction, or two adjacent longitudinal air guide strips 332 can be adjusted to slide in the left-right direction at the same time to adjust the spacing between the two longitudinal air guide strips 332 in the left-right direction.

[0092] In this way, the angular position state and / or the spacing position state of the longitudinal air guide strips 332 can be adjusted by the second driving member 334, so that the plurality of longitudinal air guide strips 332 can be flexibly switched between the second preset performance position and the second preset silent position.

[0093] In order to facilitate the control of the air guide assembly 33 to flexibly switch between the preset silent position and the preset performance position, such as Fig.12 As shown, the indoor unit 30 may further include a controller 34, and the controller 34 may be electrically connected to at least one of the first driving member 333 and the second driving member 334. The controller 34 is configured to have a performance control mode and a mute control mode, so that the controller 34 can flexibly control the position state of the air guide assembly 33 through the first driving member 333 and the second driving member 334.

[0094] For example, Figure 8 As shown, the indoor unit 30 may further include an electrical box 35 located in the accommodating cavity 311 , and the controller 34 may be installed in the electrical box 35 .

[0095] In addition, if Fig.12As shown, the controller 34 can also communicate with the compressor 11 (such as Figure 1 As shown) is electrically connected to the motor 325 so that the flow rate of the refrigerant can be adjusted by controlling the operating power of the compressor 11, and the air output of the fan assembly can also be adjusted by controlling the rotation of the motor 325.

[0096] The controller 34 may be configured to have a performance control mode and a silent control mode, that is, it may be considered that the indoor unit 30 or the air conditioner 100 has a performance control mode and a silent control mode.

[0097] When the controller 34 is electrically connected to the first driving member 333 , the controller 34 can adjust the position state of the lateral air guide strip 331 through the first driving member 333 .

[0098] For example, when the controller 34 switches to the performance control mode, the controller 34 adjusts the transverse air guide strip 331 to the first preset performance position through the first driving member 333, so that the indoor unit 30 is in a working state with higher heat exchange efficiency.

[0099] When the controller 34 switches to the silent control mode, the controller 34 adjusts the transverse air guide strip 331 to the first preset silent position through the first driving member 333, so that the indoor unit 30 has lower operating noise.

[0100] When the controller 34 is electrically connected to the second driving member 334 , the controller 34 can adjust the position state of the longitudinal air guide strip 332 through the second driving member 334 .

[0101] For example, when the controller 34 switches to the performance control mode, the controller 34 adjusts the longitudinal air guide strip 332 to the second preset performance position through the second driving member 334, so that the indoor unit 30 is in a working state with higher heat exchange efficiency.

[0102] When the controller 34 switches to the silent control mode, the controller 34 adjusts the longitudinal air guide strip 332 to the second preset silent position through the second driving member 334, so that the indoor unit 30 has lower operating noise.

[0103] It should be noted that the controller 34 switching to the performance control mode means that the controller 34 switches from other modes to the performance control mode, such as the controller switches from the silent control mode to the performance control mode, or the air conditioner 100 directly enters the performance control mode when it is turned on. That is, the controller 34 adjusts the air guide component 33 to the preset performance position through the first drive member 333 and the second drive member 334 only when the controller 34 enters the performance control mode. When the controller 34 continues to maintain the performance control mode, the execution action of switching to the preset performance position will not be executed through the first drive member 333 and the second drive member 334.

[0104] The controller 34 switches to the silent control mode, which means that the controller 34 switches from other modes to the silent control mode, such as the controller switches from the performance control mode to the silent control mode, or the air conditioner 100 directly enters the silent control mode when it is turned on. That is, the controller 34 adjusts the air guide assembly 33 to the preset silent position through the first driving member 333 and the second driving member 334 only when the controller 34 enters the silent control mode. When the controller 34 continues to maintain the silent control mode, the execution action of switching to the preset silent position will not be executed through the first driving member 333 and the second driving member 334.

[0105] It can be understood that the preset position states of the air guide assembly 33 include: a first preset performance position and a first preset silent position of multiple transverse air guide strips 331 , and a second preset performance position and a second preset silent position of multiple longitudinal air guide strips 332 .

[0106] The first preset performance position, the second preset performance position, the first preset silent position, and the second preset silent position may be factory preset positions of the indoor unit 30. The first preset performance position and the second preset performance position may enable the indoor heat exchanger to have a higher heat exchange efficiency state, and the first preset silent position and the second preset silent position may enable the vicinity of the indoor heat exchanger 15 to have lower turbulent noise.

[0107] Since the indoor unit 30 is in cooling, heating, or dehumidification working conditions and the fan assembly 32 is in different speeds, such as high gear, medium gear, or low gear, the air volume flowing through the indoor heat exchanger 15 is not exactly the same.

[0108] Based on this, when the controller 34 is in the performance control mode or the silent control mode, the controller 34 can optimize and adjust the position states of the transverse air guide strips 331 and the longitudinal air guide strips 332 through the first driving member 333 and the second driving member 334, so that the indoor heat exchanger 15 has a higher heat exchange efficiency in the performance control mode, and the indoor heat exchanger 15 has a lower noise in the silent control mode.

[0109] For example, when the indoor unit 30 is in different operating conditions such as cooling condition, heating condition or dehumidification condition, the first preset performance position, the second preset performance position, the first preset silent position and the second preset silent position may have different preset positions corresponding to different operating conditions. For example, the first preset performance position of the transverse air guide strip 331 is not completely the same under different operating conditions, so that the indoor heat exchanger 15 can maintain high heat exchange efficiency.

[0110] Moreover, when the rotation of the fan assembly 32 is different so that the air volume has different air volume gears such as high gear, medium gear, and low gear, the preset positions of the first preset performance position, the second preset performance position, the first preset silent position, and the second preset silent position can also be adjusted and set accordingly to correspond to different air volume gears and different operating conditions.

[0111] Alternatively, the first preset performance position, the second preset performance position, the first preset silent position, and the second preset silent position may also be set to have a preset initial position, and the four initial positions of the first preset performance position, the second preset performance position, the first preset silent position, and the second preset silent position may be completely different or partially the same. The initial position is a factory preset position for easy control, or the initial position may also be an initial preset position recorded by the controller 34 of the indoor unit 30 through learning, which is not limited.

[0112] In some embodiments, the first driving member 333 may include a transmission structure such as a gear, a transmission rod and / or a transmission belt, and a driving motor, which may be connected to the plurality of transverse air guide strips 331 through the transmission structure. In this way, the controller 34 may be electrically connected to the driving motor, and may simultaneously adjust the angular position states of the plurality of transverse air guide strips 331 through the driving motor and the transmission structure, such as switching and adjusting the position states of the plurality of transverse air guide strips 331 between the first preset performance position and the first preset silent position, with a simple structure.

[0113] Alternatively, the first driving member 333 may also include multiple driving motors, such as one driving motor may be connected to one transverse air guide strip 331, the output shaft of the driving motor may be connected to the left end or the right end of the transverse air guide strip 331 along the left-right direction, or the driving motor may be connected to the transverse air guide strip 331 through a gear or the like. In this way, the controller 34 may be electrically connected to the multiple driving motors, and the angular position states of the multiple transverse air guide strips 331 may be adjusted one by one at the same time through the multiple driving motors, such as switching and adjusting the position states of the multiple transverse air guide strips 331 between the first preset performance position and the first preset silent position.

[0114] At this time, the controller 34 can adjust the angular position state of each transverse air guide strip 331 through multiple drive motors, which is conducive to improving the accuracy of the first preset performance position and the first preset silent position. In addition, the controller 34 can also flexibly adjust the angular position state of some transverse air guide strips 331 through drive motors.

[0115] Exemplarily, the first driving member 333 may also include one or more driving motors and corresponding transmission structures, such as the transmission structure may include a gear connected to the driving motor and a rack connected to the transverse air guide strip 331 and meshing with the gear. In this way, the controller 34 may also adjust the position of the transverse air guide strip 331 in the up-down direction or the front-back direction through the first driving member 333, so as to adjust the spacing size of two adjacent transverse air guide strips 331, that is, by adjusting the spacing position state of one or more transverse air guide strips 331, the ventilation volume of different first heat exchange areas 153 may also be adjusted.

[0116] Correspondingly, the second driving member 334 may also include one or more driving motors and corresponding transmission structures, so that the second driving member 334 can control and adjust the angular position state and the spacing position state of one or more longitudinal air guide strips 332, so as to adjust the ventilation volume of different second heat exchange areas 154. The second driving member 334 may be configured with reference to the first driving member 333.

[0117] like Fig.12 As shown, the indoor unit 30 may also include a plurality of first temperature sensors 36, Fig. 9 and Fig.11 At least one transverse air guide strip 331 and at least one first temperature sensor 36 are correspondingly provided in one first heat exchange area 153, and the controller 34 can be electrically connected to a plurality of first temperature sensors 36. The first temperature sensor 36 can be located on the leeward side of the first heat exchange area 153, and is used to detect the outlet air temperature of the first heat exchange area 153 and output a first temperature signal.

[0118] In this way, the controller 34 can receive the first temperature signal, that is, the controller 34 can monitor the outlet air temperatures of the plurality of first heat exchange areas 153 in real time. When the controller 34 is in the performance mode, the controller 34 is configured as follows:

[0119] A first detection difference is obtained, and the absolute value of the difference between the parameter of the first temperature signal and the preset temperature is the first detection difference. When the first detection difference is greater than the first preset error, the controller 34 adjusts the position state of at least part of the transverse air guide strip 331 through the first driving member 333, so that the first detection difference is less than or equal to the first preset error, and the first preset error is less than or equal to the preset performance error.

[0120] Since a first temperature sensor 36 of a first heat exchange zone 153 can output one or more first temperature signals, taking a first temperature sensor 36 provided in a first heat exchange zone 153 as an example, if the first detection difference obtained based on the first temperature signal output by the first temperature sensor 36 is greater than the first preset error, it means that the ventilation volume of the first heat exchange zone 153 needs to be increased or decreased.

[0121] Taking the indoor unit 30 in cooling condition as an example, when the first detection difference is greater than the first preset error, if the parameter of the first temperature signal is greater than the preset temperature, it is necessary to adjust the corresponding transverse air guide strip 331 to reduce the ventilation volume of the first heat exchange area 153 so as to lower the outlet air temperature of the first heat exchange area 153. When the first detection difference is greater than the first preset error, if the parameter of the first temperature signal is less than the preset temperature, it is necessary to adjust the corresponding transverse air guide strip 331 to increase the ventilation volume of the first heat exchange area 153 so as to increase the outlet air temperature of the first heat exchange area 153 so as to make the outlet air temperature of multiple first heat exchange areas 153 close to or equal to the preset temperature.

[0122] Since the indoor unit 30 has different operating modes such as cooling, heating, dehumidification and multi-level wind speed, even if the first preset performance position of the transverse air guide strip 331 is adjusted to a suitable position before leaving the factory, the preset first preset performance position cannot simultaneously meet the high efficiency of heat exchange of the indoor heat exchanger 15 in multiple operating modes. Based on this, through the coordinated setting of the above-mentioned controller 34 and multiple first temperature sensors 36, the multiple transverse air guide strips 331 of the indoor unit 30 in the performance mode state can be fine-tuned so that the air volume received by the indoor heat exchanger 15 in the up and down directions can meet its high efficiency of heat exchange in multiple operating modes, that is, the absolute value of the difference between the outlet air temperature of multiple first heat exchange areas 153 and the preset temperature is less than the first preset error.

[0123] For example, when the indoor unit 30 is in cooling mode, taking the preset temperature of 26°C as an example, the controller 34 adjusts the transverse air guide strip 331 to the first preset performance position and adjusts the longitudinal air guide strip 332 to the second preset performance position so that the outlet air temperature of the indoor heat exchanger 15 can be evenly distributed between 24°C and 28°C.

[0124] On this basis, when one or more parameters of the first temperature signal (i.e., the outlet air temperature) is greater than 27°C or less than 25°C, the angle position state and / or the spacing position state of the corresponding transverse air guide strip 331 can be adjusted. If the detected temperature is greater than 27 degrees, the corresponding transverse air guide strip 331 is adjusted to increase the air volume of the first heat exchange area 153. If the detected temperature is less than 25 degrees, the corresponding transverse air guide strip 331 is adjusted to reduce the air volume of the first heat exchange area 153, so that the outlet air temperature on the leeward side of the indoor heat exchanger 15 is evenly distributed between 25°C and 27°C.

[0125] It should be noted that the first preset error and the second preset error can be non-negative numbers ranging from 0 to 3, such as 0, 0.5, 1, 1.5, 2, 2.5 and 3, and the first preset error is less than or equal to the preset performance error. The preset performance error and the preset mute error can be non-negative numbers ranging from 0 to 5.

[0126] like Fig.12 As shown, the indoor unit 30 may also include a plurality of second temperature sensors 37, Figure 8 and Fig.10 At least one longitudinal air guide strip 332 and at least one second temperature sensor 37 are correspondingly provided in one second heat exchange area 154, and the controller 34 can be electrically connected to a plurality of second temperature sensors 37. The second temperature sensor 37 can be located on the leeward side of the second heat exchange area 154, and is used to detect the outlet air temperature of the second heat exchange area 154 and output a second temperature signal.

[0127] In this way, the controller 34 can receive the second temperature signal, that is, the controller 34 can monitor the outlet air temperatures of the plurality of second heat exchange areas 154 in real time. When the controller 34 is in the performance mode, the controller 34 is configured as follows:

[0128] A second detection difference is obtained, where the absolute value of the difference between the parameter of the second temperature signal and the preset temperature is the second detection difference.

[0129] When the second detection difference is greater than the second preset error, the controller 34 adjusts the position state of at least part of the longitudinal wind guide strip 332 through the second driving member 334 so that the second detection difference is less than or equal to the second preset error, and the second preset error is less than or equal to the preset performance error.

[0130] Since a second temperature sensor 37 of a second heat exchange zone 154 can output one or more second temperature signals, taking a second heat exchange zone 154 provided with a second temperature sensor 37 as an example, if the second detection difference obtained based on the second temperature signal output by the second temperature sensor 37 is greater than the second preset error, it means that the ventilation volume of the second heat exchange zone 154 needs to be increased or decreased.

[0131] Taking the indoor unit 30 in cooling condition as an example, when the second detection difference is greater than the second preset error, if the parameter of the second temperature signal is greater than the preset temperature, it is necessary to adjust the corresponding longitudinal air guide strip 332 to reduce the ventilation volume of the second heat exchange area 154, so as to lower the outlet air temperature of the second heat exchange area 154. When the second detection difference is greater than the second preset error, if the parameter of the second temperature signal is less than the preset temperature, it is necessary to adjust the corresponding longitudinal air guide strip 332 to increase the ventilation volume of the second heat exchange area 154, so as to increase the outlet air temperature of the second heat exchange area 154, so as to make the outlet air temperature of multiple second heat exchange areas 154 close to or equal to the preset temperature.

[0132] Since the indoor unit 30 has different operating modes such as cooling, heating, dehumidification and multi-level wind speed, even if the second preset performance position of the longitudinal air guide strip 332 is adjusted to a suitable position before leaving the factory, the preset second preset performance position cannot simultaneously meet the high efficiency of heat exchange of the indoor heat exchanger 15 in multiple operating modes. Based on this, through the coordinated setting of the above-mentioned controller 34 and multiple second temperature sensors 37, the multiple longitudinal air guide strips 332 of the indoor unit 30 in the performance mode state can be fine-tuned so that the air volume received by the indoor heat exchanger 15 in the up and down directions can meet its high efficiency of heat exchange in multiple operating modes, that is, the absolute value of the difference between the outlet air temperature of multiple second heat exchange areas 154 and the preset temperature is less than the second preset error.

[0133] For example, when the indoor unit 30 is in cooling mode and the controller 34 is in performance control mode, taking the preset temperature as 26°C as an example, when the parameters of one or more second temperature signals (i.e., the outlet air temperature) are greater than 27°C or less than 25°C, the angle position state and / or spacing position state of the corresponding longitudinal air guide strips 332 can be adjusted. If the detected temperature is greater than 27 degrees, the corresponding longitudinal air guide strips 332 are adjusted to increase the air volume of the second heat exchange area 154. If the detected temperature is less than 25 degrees, the corresponding longitudinal air guide strips 332 are adjusted to reduce the air volume of the second heat exchange area 154, so that the outlet air temperature on the leeward side of the indoor heat exchanger 15 is evenly distributed between 25°C and 27°C.

[0134] It should be noted that, on the leeward side of the indoor heat exchanger 15, a first temperature sensor 36 may be provided in a first heat exchange area 153, and the first detection difference may be directly calculated using the first temperature signal output by the first temperature sensor 36. If a plurality of first temperature sensors 36 are provided on the leeward side of a first heat exchange area 153, the average value of the parameter of the first temperature signal of the first heat exchange area 153 may be calculated, and the first detection difference is the absolute value of the difference between the average value and the preset temperature.

[0135] On the leeward side of the indoor heat exchanger 15, a second heat exchange area 154 may be provided with a second temperature sensor 37, and the second detection difference may be directly calculated using the second temperature signal output by the second temperature sensor 37. If a plurality of second temperature sensors 37 are provided on the leeward side of a second heat exchange area 154, the average value of the parameter of the second temperature signal of the second heat exchange area 154 may be calculated, and the second detection difference is the absolute value of the difference between the average value and the preset temperature.

[0136] In some embodiments, the controller 34 can be configured to have a learning and memory mode. When the indoor unit 30 is in cooling, heating or dehumidification operation, and the fan assembly 32 is in high gear, medium gear or low gear, the controller 34 is in performance control mode as an example:

[0137] When multiple first detection differences are less than the first preset error or equal to zero, the controller 34 can record the position status of multiple lateral air guide strips 331 through the first driving member 333, and can record the position status of multiple lateral air guide strips 331 at this time as the first preset performance position.

[0138] When multiple second detection differences are less than the second preset error or equal to zero, the controller can record the position status of multiple longitudinal air guide strips 332 through the second driving member 334, and can record the position status of multiple longitudinal air guide strips 332 at this time as the second preset performance position.

[0139] The electric control power elements of the first driving member 333 and the second driving member 334 may be stepping motors, so as to precisely adjust the position states of the transverse air guide strips 331 and the longitudinal air guide strips 332 .

[0140] When the indoor unit 30 is in different operating conditions and the fan assembly 32 is in different air volume levels, the air guide assembly 33 has different preset performance positions and preset silent positions as an example. The controller 34 can be configured as follows:

[0141] When the controller 34 switches to the performance control mode, the operating condition of the indoor unit 30 and the gear position of the fan assembly 32 are detected, and the transverse air guide strips are adjusted to the corresponding first preset performance position, and the longitudinal air guide strips are adjusted to the corresponding second preset performance position.

[0142] When the controller 34 is in the performance control mode, it detects whether the operating condition of the indoor unit 30 has changed, and detects whether the gear position of the fan assembly 32 has changed. If at least one of the operating condition and the gear position has changed, the first preset performance position of the transverse air guide strip and the second preset performance position of the longitudinal air guide strip are adjusted.

[0143] It should be noted that, when the controller 34 cooperates with the first temperature sensor 36 and the second temperature sensor 37 to fine-tune the preset performance position of the air guide assembly 33, the above operation can be repeated at preset time intervals, such as 5-20 seconds.

[0144] Among them, the user can freely switch the control modes such as the performance control mode and the silent control mode of the controller 34 through the remote control, the operation panel or the Internet of Things control terminal. For example, when the air conditioner 100 operates in a cooling or heating condition with high power, the performance control mode of the controller 34 can be used to further improve the operating efficiency of the air conditioner 100 and save energy and reduce consumption.

[0145] In some embodiments, Fig.12As shown, the indoor unit 30 may further include a plurality of first air volume sensors 38 and a plurality of second air volume sensors 39. The air volume sensors may be pressure sensors or wind speed sensors, which are used to detect the air flow rate at the outlet side of the indoor heat exchanger 15. If the wind pressure or wind speed is consistent, it can be considered that the air volume is the same.

[0146] Combination Figure 8 and Fig.12 At least one second air volume sensor 39 may be installed on the air outlet side of a second heat exchange area 154 to detect the air volume of the second heat exchange area 154 and output a second air volume signal. Fig. 9 At least one first air volume sensor 38 may be installed on the air outlet side of a first heat exchange zone 153 to detect the air volume of the first heat exchange zone 153 and output a first air volume signal.

[0147] The controller 34 may be electrically connected to the first air volume sensor 38 and the second air volume sensor 39, and receive the first air volume signal and the second air volume signal. When the controller 34 is in the silent control mode, the controller 34 may be configured as follows:

[0148] The first average air volume of the first heat exchange areas 153 is obtained, and the second average air volume of the second heat exchange areas 154 is obtained. For example, the average value of the parameters of the first air volume signals is the first average air volume, and the average value of the parameters of the second air volume signals is the second average air volume.

[0149] The third detection difference and the fourth detection difference are obtained, the absolute value of the difference between the parameter of the first air volume signal and the first average air volume is the third detection difference, and the absolute value of the difference between the parameter of the second air volume signal and the second average air volume is the fourth detection difference.

[0150] When the third detection difference is greater than the third preset error, the controller 34 adjusts the position state of at least part of the transverse air guide strips 331 through the first driving member 333 so that the third detection difference is less than or equal to the third preset error, so that the air volume of the plurality of first heat exchange areas 153 is close to or equal to the first average air volume.

[0151] When the fourth detection difference is greater than the fourth preset error, the controller 34 adjusts the position state of at least part of the longitudinal air guide strips 332 through the second driving member 334 so that the fourth detection difference is less than or equal to the fourth preset error, so that the air volume of the plurality of second heat exchange areas 154 is close to or equal to the second average air volume.

[0152] The third preset error is less than or equal to the mute preset error, and the fourth mute error is less than or equal to the mute preset error. The third preset error may be equal to the fourth preset error, and the first preset error may also be equal to the second preset error.

[0153] The operating state of the controller 34 when in the silent control mode is also the learning mode of the controller 34 .

[0154] It should be noted that, according to actual needs, the indoor unit 30 may also be provided with only a plurality of first air volume sensors 38, or the indoor unit 30 may also be provided with a plurality of second air volume sensors 39. At this time, the learning mode of the controller 34 in the silent control mode needs to be adjusted according to actual needs.

[0155] Compared with the air volume sensor, since the temperature sensor has the advantages of small size, low price and high precision, the first temperature sensor 36 and the second temperature sensor 37 can be flexibly arranged in multiple first heat exchange zones 153 and multiple second heat exchange zones 154, and the learning micro-control configuration of the controller 34 in the performance control mode can be set accordingly.

[0156] Based on this, according to actual production conditions, it is not necessary to install an air volume sensor on the air outlet side of the indoor heat exchanger 15. That is, the controller 34 in the silent control mode only needs to adjust the transverse air guide strip to the first preset silent position and the longitudinal air guide strip to the second preset silent position, which can also reduce the noise of the indoor unit 30 in this control mode, and the structure is simple and the cost is low.

[0157] For the silent control mode, by adjusting and controlling the transverse air guide strip 331 and the longitudinal air guide strip 332, the air supply direction and wind speed on the windward side of the indoor preheat exchanger 15 can be intervened to improve the orderliness of the wind field inside the installation cavity 311, thereby reducing the turbulent noise during the air flow process. In this way, not only can the pressure loss during the air supply process be reduced and the air supply efficiency be improved, but the air supply process of the existing duct air conditioner in non-standard application scenarios can also be effectively controlled to eliminate the noise out of control and abnormal sound problems caused by irregular air supply.

[0158] It should be noted that for the air guide grille network composed of multiple longitudinal air guide strips 332 and multiple transverse air guide strips 331, the length dimension of the air guide grille network (i.e., the length dimension of the transverse air guide strips 331) can be matched with the length dimension of the indoor heat exchanger 15, and arranged between the indoor heat exchanger 15 and one or more exhaust outlets 323.

[0159] Alternatively, the air guide grille may be configured as a structure with a smaller length dimension, such as slightly larger than the size of the exhaust port 323, and between the indoor heat exchanger 15 and the fan assembly 32, a plurality of air guide grilles may be arranged in one-to-one correspondence with a plurality of exhaust ports 323. For example, an air guide grille assembly may be arranged in front of an exhaust port 323 and aligned with the exhaust port 323 in the front-to-back direction.

[0160] On the other hand, the embodiment of the present application further provides a control method for a duct air conditioner (hereinafter referred to as a control method) for controlling the indoor unit 30 in the above aspect. Fig.13 As shown, the control method may include:

[0161] Step S100: Detect whether the indoor unit is switched to the performance control mode.

[0162] If yes, execute step S200. Otherwise, execute step S300.

[0163] Step S200: controlling the air guide assembly to adjust to a preset performance position.

[0164] Step S300: Detect whether the indoor unit is switched to the silent control mode.

[0165] If yes, execute step S400. Otherwise, execute step S500.

[0166] Step S400: Control the air guide assembly to adjust to a preset silent position.

[0167] Step S500: Control the air guide assembly to maintain the current position state.

[0168] Exemplarily, the air guide assembly can be configured to have at least a preset performance position and a preset silent position before leaving the factory. The preset performance position includes a first preset performance position of a plurality of transverse air guide strips and a second preset performance position of a plurality of longitudinal air guide strips, which is conducive to improving the uniformity of the temperature distribution on the leeward side of the indoor heat exchanger, that is, improving the overall heat exchange efficiency of the indoor unit, thereby avoiding the occurrence of uneven hot and cold air outlets of the indoor unit.

[0169] Correspondingly, the preset quiet position includes a first preset quiet position of multiple transverse air guide strips and a second preset quiet position of multiple longitudinal air guide strips, which is beneficial to improving the uniformity of the overall air volume distribution of the indoor heat exchanger, thereby reducing the turbulent noise near the indoor heat exchanger, that is, the indoor unit can have the advantages of quiet operation and efficient heat exchange.

[0170] It should be noted that in step S100 and step S300, for detecting whether the indoor unit is switched to the preset silent mode or the preset performance mode, it can be based on detecting whether the indoor unit (such as a controller) receives a signal to switch to the preset performance mode or the preset silent mode.

[0171] That is, if the controller remains in the current preset performance mode or preset silent mode, the judgment result is No. If the controller will switch to the preset performance mode or preset silent mode, that is, the controller receives a signal to change the control mode, the judgment structure is Yes.

[0172] In addition, for steps S100 to S500, local control and adjustment can also be performed through step S100 and step S200. Alternatively, local control and adjustment can also be performed through step S100, step S200 and step S500 or step S300, step S400 and step S500.

[0173] Among them, in the local control schemes of step S100, step S200 and step S500, the scheme in step S100:

[0174] If yes, execute step S200. Otherwise, execute step S300.

[0175] The above solution needs to be adjusted to:

[0176] If yes, execute step S200. Otherwise, execute step S500.

[0177] In some embodiments, when the air guide assembly of the indoor unit is in the performance mode, the outlet air temperatures of multiple heat exchange zones of the indoor heat exchanger can be detected, and the absolute value of the difference between the outlet air temperatures of the multiple heat exchange zones and the preset temperature (i.e., the detected difference) can be compared with a first preset error (the first preset error is equal to the second preset error).

[0178] If the detected difference is greater than the first preset error, the position state of the transverse air guide strips and / or the longitudinal air guide strips can be adjusted to improve the temperature distribution uniformity of the indoor heat exchanger.

[0179] If the detection difference is less than or equal to the first preset error, the above detection and determination steps may be terminated, or the above detection and determination steps may be repeated after a period of time.

[0180] For example, when the air guide assembly of the indoor unit is in the performance mode, Fig.14 As shown, the control method may include:

[0181] Step S211: Acquire multiple air outlet temperatures of the heat exchange zone.

[0182] Step S212: Determine whether the absolute value of the difference between the outlet air temperature and the preset temperature is greater than a first preset error.

[0183] If yes, execute step S213.

[0184] Otherwise, the process ends, or step S211 is repeated after a preset time interval.

[0185] Step S213: adjusting the position state of the air guide assembly so that the absolute value of the difference between the outlet air temperature and the preset temperature is less than or equal to a first preset error.

[0186] Exemplarily, if the first detection difference is greater than the first preset error, the position states of multiple lateral air guide strips are adjusted so that the first detection difference is less than or equal to the first preset error, so that the outlet air temperature on the leeward side of the indoor heat exchanger 15 is evenly distributed in the left and right directions.

[0187] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0188] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A duct air conditioner, comprising an indoor unit, characterized in that: The indoor unit comprises: A housing having a mounting cavity; An indoor heat exchanger is located in the installation cavity; A fan assembly is located in the installation cavity and is spaced apart from the indoor heat exchanger; and an air guide assembly, wherein the air guide assembly is installed between the fan assembly and the indoor heat exchanger, and the fan assembly is used to drive air to blow toward the indoor heat exchanger through the air guide assembly; The indoor heat exchanger includes a plurality of heat exchange zones; the air guide component is at least configured to switch between a preset performance position and a preset silent position to adjust the amount of air blown to the plurality of heat exchange zones through the air guide component; When the air guide assembly is located at the preset performance position, the absolute value of the difference between the outlet air temperature on the leeward side of the plurality of heat exchange zones and the preset temperature is less than or equal to the preset performance error; When the air guide assembly is located at the preset silent position, the absolute value of the difference between the air volume on the leeward side of the plurality of heat exchange zones and the average air volume is less than or equal to a preset silent error.

2. The duct air conditioner according to claim 1, characterized in that: The fan assembly is a centrifugal fan structure; the air guide assembly includes: A plurality of transverse air guide strips, wherein the length direction of the transverse air guide strips is parallel to the axial direction of the fan assembly, and the plurality of transverse air guide strips are spaced apart and distributed in the up-down direction; and a first driving member, the first driving member being connected to the transverse air guide strip and being used for controlling and adjusting the position state of the transverse air guide strip; Wherein, the first driving member is at least used to drive the lateral air guide strip to switch and adjust between a first preset performance position and a first preset silent position; the preset performance position includes the first preset performance position, and the preset silent position includes the first preset silent position.

3. The duct air conditioner according to claim 2, characterized in that: The indoor unit further comprises: a controller, the controller being electrically connected to the first driving member, the controller being configured to have a performance control mode and a silent control mode; When the controller switches to the performance control mode, the controller adjusts the transverse air guide strip to the first preset performance position through the first driving member; When the controller switches to the silent control mode, the controller adjusts the transverse air guide strip to the first preset silent position through the first driving member.

4. The duct air conditioner according to claim 3, characterized in that: The indoor unit further comprises: A plurality of first temperature sensors; the heat exchange area comprises a plurality of first heat exchange areas distributed in the up-down direction, and one of the first heat exchange areas is correspondingly provided with at least one transverse air guide strip and at least one first temperature sensor; The first temperature sensor is located at the leeward side of the first heat exchange zone, and is used to detect the outlet air temperature of the first heat exchange zone and output a first temperature signal; The controller is electrically connected to the plurality of first temperature sensors and receives the first temperature signal; when the controller is in the performance control mode, the controller is configured as follows: Acquire a first detection difference, where the absolute value of the difference between the parameter of the first temperature signal and the preset temperature is the first detection difference; When the first detection difference is greater than the first preset error, the controller adjusts the position state of at least part of the lateral wind guide strip through the first driving member so that the first detection difference is less than or equal to the first preset error, and the first preset error is less than or equal to the preset performance error.

5. The duct air conditioner according to claim 2, characterized in that: The first driving member is configured as: The first driving member is used to drive the transverse air guide strips to rotate around a first axis to adjust the angular position of one or more of the transverse air guide strips, and the first axis is parallel to the axial direction of the fan assembly; and / or, The first driving member is used to adjust the spacing between two adjacent transverse air guide strips in the up-down direction, so as to adjust the spacing position state of one or more transverse air guide strips; Wherein, the position state includes an angle position state and a spacing position state.

6. The duct air conditioner according to any one of claims 2 to 4, characterized in that: The air guide assembly also includes: A plurality of longitudinal air guide strips, wherein the length direction of the longitudinal air guide strips is perpendicular to the length direction of the transverse air guide strips, and the plurality of longitudinal air guide strips are spaced apart along the length direction of the transverse air guide strips; and a second driving member, the second driving member being connected to the longitudinal air guide strip and being used for controlling and adjusting the position state of the longitudinal air guide strip; In the case where the indoor unit further includes a controller, the controller is electrically connected to the second driving member; When the controller switches to the performance control mode, the controller adjusts the longitudinal air guide strip to a second preset performance position through the second driving member; When the controller is switched to the silent control mode, the controller adjusts the longitudinal air guide strip to a second preset silent position through the second driving member; The preset performance position includes the second preset performance position, and the preset quiet position includes the second preset quiet position.

7. The duct air conditioner according to claim 6, characterized in that: The indoor unit comprises: A plurality of second temperature sensors; the heat exchange area comprises a plurality of second heat exchange areas distributed along the axial direction of the centrifugal fan; and one of the second heat exchange areas is correspondingly provided with at least one longitudinal air guide strip and at least one second temperature sensor; The second temperature sensor is located at the leeward side of the second heat exchange zone, and is used to detect the outlet air temperature of the second heat exchange zone and output a second temperature signal; The controller is electrically connected to the plurality of second temperature sensors and receives the second temperature signal; when the controller is in the performance control mode, the controller is configured to: Acquire a second detection difference, where the absolute value of the difference between the parameter of the second temperature signal and the preset temperature is the second detection difference; When the second detection difference is greater than the second preset error, the controller adjusts the position state of at least part of the longitudinal wind guide strip through the second driving member so that the second detection difference is less than or equal to the second preset error, and the second preset error is less than or equal to the performance error.

8. The duct air conditioner according to claim 6, characterized in that: The second driving member is configured as follows: The second driving member is used to drive the longitudinal air guide strip to rotate around a second axis to adjust the angular position of one or more longitudinal air guide strips, and the second axis is parallel to the length direction of the longitudinal air guide strip; and / or, Along the length direction of the transverse air guide strip, the second driving member is used to adjust the spacing size between two adjacent longitudinal air guide strips to adjust the spacing position state of one or more longitudinal air guide strips; The position state includes the angular position state and the pitch position state.

9. The duct air conditioner according to any one of claims 2 to 5, characterized in that: The fan assembly is a centrifugal fan structure, and the indoor heat exchanger includes: refrigerant pipe; and a plurality of fins, wherein the fins are an integrated planar sheet structure, the plurality of fins are spaced apart along the axial direction of the fan assembly, and the refrigerant pipe passes through the plurality of fins along the axial direction of the fan assembly and is in contact with and connected to the plurality of fins; The fin comprises at least seven connecting pieces connected in sequence along the up-down direction; The first connecting piece is bent and connected to the third connecting piece through the second connecting piece, and the opening of the angle formed by the first connecting piece and the third connecting piece is arranged toward the air guide assembly; The third connecting piece is bent and connected to the fifth connecting piece through the fourth connecting piece, and the angle opening formed by the third connecting piece and the fifth connecting piece is arranged on a side away from the air guide component; The fifth connecting piece is bent and connected to the seventh connecting piece through the sixth connecting piece, and the opening edge of the angle formed by the fifth connecting piece and the seventh connecting piece is arranged toward the air guide assembly; The connecting piece and the refrigerant pipe at the same height position are a first heat exchange area of ​​the indoor heat exchanger, and the indoor heat exchanger includes seven first heat exchange areas distributed in the up-down direction, and the heat exchange area includes the first heat exchange area; At least one of the transverse air guide strips is used to adjust the amount of air blown toward one of the first heat exchange areas.

10. A control method for a ducted air conditioner, characterized in that: Used to control the duct air conditioner according to any one of claims 1 to 9, the control method of the duct air conditioner comprising: detecting whether the indoor unit is switched to a performance control mode; If yes, controlling the air guide assembly to adjust to the preset performance position; When the indoor unit is in the performance control mode and the air guide assembly is located at the preset performance position: Acquire multiple air outlet temperatures of multiple heat exchange zones; Determining whether the absolute value of the difference between the outlet air temperature and the preset temperature is greater than a first preset error; If so, the position state of the air guide component is adjusted so that the absolute value of the difference between the air outlet temperature and the preset temperature is less than or equal to the first preset error.

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