Air duct assembly, cabinet air conditioner indoor unit and sterilization method

Abstract

The present invention relates to the field of air conditioning technology, and in particular to an air duct assembly, a cabinet air conditioner indoor unit and a sterilization method. An upper air duct, an upper fan cavity, an intermediate air duct, a lower fan cavity and a lower air duct are formed in an air duct shell of the air duct assembly, which are arranged in sequence from top to bottom; an upper partition divides the upper air duct into an upper main air duct and an upper auxiliary air duct, and a lower partition divides the lower air duct into a lower main air duct and a lower auxiliary air duct. An upper air duct wall of the upper auxiliary air duct is provided with an upper air guide port, and a lower air duct wall of the lower auxiliary air duct is provided with a lower air guide port; an upper wind shield component is provided at the upper air guide port, and a lower wind shield component is provided at the lower air guide port; an upper fan cavity is provided with an upper fan and an upper volute tongue motion mechanism, and a lower fan cavity is provided with a lower fan and a lower volute tongue motion mechanism; a first sterilization component is provided in the upper main air duct and / or the upper auxiliary air duct, a second sterilization component is provided in the intermediate air duct, and a third sterilization component is provided in the lower main air duct and / or the lower auxiliary air duct. The present invention can effectively sterilize indoor air and the interior of the air conditioner without affecting the air outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air duct component, a cabinet-type air conditioner indoor unit and a sterilization method. Background Art

[0002] Air conditioners have become an indispensable part of air conditioning appliances. However, during the cooling process, condensation will be generated inside the indoor unit of the air conditioner due to the decrease in temperature. When the fan draws indoor air into the indoor unit, dust in the air will stick to the condensation, which can easily produce mold inside the indoor unit and cause bacterial reproduction and the growth of pathogens, thereby reducing indoor air quality and endangering human health. With the improvement of people's living standards, consumers are particularly concerned about whether home appliances have the functions of sterilization, sterilization and antibacterial.

[0003] In the related art, an ultraviolet sterilization device is added to the air inlet side of the indoor unit. The ultraviolet light emitted by the ultraviolet sterilization device irradiates the air flowing through the indoor unit to achieve the disinfection and sterilization effect on the air. However, the ultraviolet light needs to meet a certain time or sufficient light intensity to sterilize by contacting with bacteria in the air. This type of air conditioner will close the air inlet and outlet of the indoor unit during the sterilization stage to form a closed cavity in the indoor unit so that the ultraviolet light can fully contact with the air in the indoor unit for a long time to complete the sterilization. Since this type of air conditioner needs to form a closed cavity to achieve sufficient sterilization, the air conditioner cannot perform cooling or heating during the sterilization stage, which reduces the user experience. Summary of the invention

[0004] In order to overcome the problem in the related art that the indoor unit of the air conditioner needs to form a closed cavity before the indoor unit air can be fully sterilized, resulting in limited sterilization time and range, poor sterilization effect, and no air can be discharged during sterilization, which affects the cooling and heating effects, the first aspect of the present invention proposes an air duct assembly, the air duct assembly comprising:

[0005] An air duct shell, inside of which are formed an upper air duct, an upper fan cavity, a middle air duct, a lower fan cavity and a lower air duct arranged in sequence from top to bottom;

[0006] An upper partition and a lower partition, wherein the upper partition is arranged in the upper air duct and divides the upper air duct into an upper main air duct and an upper auxiliary air duct, and the lower partition is arranged in the lower air duct and divides the lower air duct into a lower main air duct and a lower auxiliary air duct, one end of the middle air duct is connected to the upper auxiliary air duct through the upper fan cavity, and the other end is connected to the lower auxiliary air duct through the lower fan cavity, an upper air guide port is arranged on the air duct wall of the upper auxiliary air duct, and a lower air guide port is arranged on the air duct wall of the lower auxiliary air duct;

[0007] an upper wind shield component and a lower wind shield component, wherein the upper wind shield component is arranged at the upper air guide port, and the upper wind shield component is designed to block the connection between the upper auxiliary air duct and the middle air duct when the upper air guide port is opened, or to connect the upper auxiliary air duct with the middle air duct when the upper air guide port is closed, and the lower wind shield component is arranged at the lower air guide port, and the lower wind shield component is designed to block the connection between the lower auxiliary air duct and the middle air duct when the lower air guide port is opened, or to connect the lower auxiliary air duct with the middle air duct when the lower air guide port is closed;

[0008] An upper fan and a lower fan, wherein the upper fan is arranged in the upper fan cavity, and the lower fan is arranged in the lower fan cavity, and the upper fan has upper air inlet ends at both axial ends, and the lower fan has lower air inlet ends at both axial ends;

[0009] An upper volute tongue motion mechanism and a lower volute tongue motion mechanism, wherein the upper volute tongue motion mechanism is arranged in the upper fan chamber, and the lower volute tongue motion mechanism is arranged in the lower fan chamber, and both the upper volute tongue motion mechanism and the lower volute tongue motion mechanism can be driven to move, and the upper volute tongue motion mechanism can be driven to move to a first position or a second position, and when the upper volute tongue motion mechanism moves to the first position, the upper fan discharges air upward through the upper main air duct, and when the upper volute tongue motion mechanism moves to the second position, the upper fan discharges air downward through the intermediate air duct, and the lower volute tongue motion mechanism can be driven to move to a third position or a fourth position, and when the lower volute tongue motion mechanism is driven to move to the third position, the lower fan discharges air upward through the intermediate air duct, and when the lower volute tongue motion mechanism is driven to move to the fourth position, the lower fan discharges air downward through the lower main air duct;

[0010] A sterilization component, comprising a first sterilization component, a second sterilization component and a third sterilization component, wherein the first sterilization component is arranged in the upper main air duct and / or the upper auxiliary air duct, the second sterilization component is arranged in the intermediate air duct, and the third sterilization component is arranged in the lower main air duct and / or the lower auxiliary air duct;

[0011] Different position states of the upper wind shield component, the lower wind shield component, the upper volute tongue movement mechanism and the lower volute tongue movement mechanism determine different flow paths of the airflow in the air duct shell, and the airflow flowing in the different flow paths can be sterilized simultaneously by the first sterilization component, the second sterilization component and the third sterilization component, or can be sterilized separately by the first sterilization component and the third sterilization component.

[0012] In some embodiments, the upper volute tongue motion mechanism can also be driven to move to a fifth position, and when the upper volute tongue motion mechanism moves to the fifth position, the upper fan discharges air upward through the upper auxiliary air duct and the upper main air duct at the same time;

[0013] The lower volute tongue movement mechanism can also be driven to move to a sixth position. When the lower volute tongue movement mechanism moves to the sixth position, the lower fan discharges air downward through the lower auxiliary air duct and the lower main air duct at the same time.

[0014] In some embodiments, the first sterilization component is disposed in the upper auxiliary air duct and is located above the upper air guide port;

[0015] The second sterilization component is arranged on a side of the air duct wall of the middle air duct opposite to the upper fan cavity and / or the lower fan cavity;

[0016] The third sterilization component is arranged in the lower auxiliary air duct and is located above the lower air guide port.

[0017] In some embodiments, the upper separator includes a first upper side edge, a second upper side edge, and a third upper side edge connected in sequence, the first upper side edge constitutes part of the duct wall of the upper main duct, the second upper side edge constitutes part of the duct wall of the upper auxiliary duct, and the third upper side edge is opposite to the upper fan cavity and is adapted to the curvature of the upper fan cavity;

[0018] The lower partition includes a first lower side edge, a second lower side edge and a third lower side edge connected in sequence, the first lower side edge constitutes part of the air duct wall of the lower main air duct, the second lower side edge constitutes part of the air duct wall of the lower auxiliary air duct, and the third lower side edge is opposite to the lower fan cavity and is adapted to the curvature of the lower fan cavity.

[0019] In some embodiments, the first upper side, the second upper side and the third upper side together form a first connecting channel, and the first lower side, the second lower side and the third lower side together form a second connecting channel, the first connecting channel connects both sides of the upper air duct along the axial direction of the upper fan, and the second connecting channel connects both sides of the lower air duct along the axial direction of the lower fan.

[0020] A second aspect of the present invention provides a cabinet-type air-conditioning indoor unit, the cabinet-type air-conditioning indoor unit comprising:

[0021] A shell, wherein an upper air inlet and an upper air outlet are provided at an upper portion of the shell, and a lower air inlet and a lower air outlet are provided at a lower portion of the shell;

[0022] Any air duct assembly proposed in the first aspect of the present invention, the air duct assembly is arranged in the shell, a shell channel is formed between the air duct shell and the shell, the upper auxiliary air duct is connected to the shell channel when the upper wind shielding component opens the upper air guide port, the lower auxiliary air duct is connected to the shell channel when the lower wind shielding component opens the lower air guide port, the upper air inlet and the lower air inlet are both connected to the shell channel, the upper main air duct and the upper auxiliary air duct are both connected to the upper air port, and the lower main air duct and the lower auxiliary air duct are both connected to the lower air port;

[0023] A heat exchanger assembly is arranged in the shell channel and is used for exchanging heat for the airflow flowing from the shell channel to the air duct assembly.

[0024] In some embodiments, the heat exchanger assembly includes a first heat exchange part, a second heat exchange part, a third heat exchange part and a fourth heat exchange part, the first heat exchange part is connected to the second heat exchange part, the third heat exchange part is connected to the fourth heat exchange part, the first heat exchange part and the third heat exchange part are located on both sides of the axial direction of the upper fan and both correspond to the upper air inlet end, the second heat exchange part and the fourth heat exchange part are located on both sides of the axial direction of the lower fan and both correspond to the lower air inlet end, the first heat exchange part and the third heat exchange part are inclined from top to bottom in a direction away from the air duct assembly, and the second heat exchange part and the fourth heat exchange part are inclined from top to bottom in a direction close to the air duct assembly.

[0025] The third aspect of the present invention provides a sterilization method for a cabinet air conditioner indoor unit, the sterilization method is applied to any cabinet air conditioner indoor unit provided in the second aspect of the present invention, the sterilization mode of the cabinet air conditioner indoor unit includes a gentle mode and a strong mode, and the sterilization method includes:

[0026] In response to the sterilization control instruction, determine the air outlet mode of the indoor unit of the cabinet air conditioner;

[0027] When the air outlet mode of the indoor unit of the cabinet air conditioner is an upward air outlet mode or a downward air outlet mode, sterilization is started according to the sterilization mode determined by the sterilization control instruction;

[0028] When the air outlet mode of the indoor unit of the cabinet air conditioner is the upper and lower simultaneous air outlet mode, the sterilization is started in the strong mode;

[0029] The sterilization power of the sterilization component in the gentle mode is lower than that in the strong mode.

[0030] In some embodiments, the sterilization method further comprises:

[0031] When the air outlet mode of the indoor unit of the cabinet air conditioner is the upper and lower simultaneous air outlet mode, the upper volute tongue movement mechanism is also controlled to move to the fifth position, so that the upper fan discharges air upward through the upper auxiliary air duct and the upper main air duct at the same time, and the lower volute tongue movement mechanism is controlled to move to the sixth position, so that the lower fan discharges air downward through the lower auxiliary air duct and the lower main air duct at the same time.

[0032] In some embodiments, the sterilization method further comprises:

[0033] Controlling the start-up states of the first sterilization component, the second sterilization component and the third sterilization component according to the determined air outlet mode;

[0034] When the air outlet mode of the cabinet air conditioner indoor unit is an upward air outlet mode or a downward air outlet mode, controlling the first sterilization component, the second sterilization component and the third sterilization component to start simultaneously;

[0035] When the air outlet mode of the cabinet air conditioner indoor unit is the upper and lower simultaneous air outlet mode, only the first sterilization component and the third sterilization component are controlled to start.

[0036] The technical solution of the present invention may include the following beneficial effects: the present invention arranges sterilization components in the upper air duct, lower air duct and middle air duct of the cabinet air-conditioning indoor unit respectively, which can complete the effective sterilization of indoor air and the air-conditioning cavity without affecting the air outlet. At the same time, the sterilization mode can be determined according to the air outlet mode of the cabinet air-conditioning indoor unit to ensure the sterilization effect.

[0037] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0039] Figure 1 is a structural diagram of an air duct assembly according to an exemplary embodiment.

[0040] Figure 2 is a side view of an air duct assembly according to an exemplary embodiment.

[0041] Figure 3 is a cross-sectional view of an air duct assembly according to an exemplary embodiment.

[0042] Figure 4 is a partial structural diagram of an air duct assembly according to an exemplary embodiment.

[0043] Figure 5It is an assembly diagram of an air duct assembly and a part of a heat exchanger assembly according to an exemplary embodiment.

[0044] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0045] Figure 7 is a structural diagram of a cabinet-type air-conditioner indoor unit according to an exemplary embodiment.

[0046] Figure 8 FIG. 4 is a front view of a cabinet-type air-conditioning indoor unit according to an exemplary embodiment.

[0047] Fig. 9 FIG. 1 is a top view of a cabinet-type air-conditioning indoor unit according to an exemplary embodiment.

[0048] Fig.10 is an exploded view of a cabinet-type air-conditioner indoor unit according to an exemplary embodiment.

[0049] Figure 11-Figure 14 The figure is an air flow path diagram of an upper air outlet mode of an indoor unit of a cabinet air conditioner according to an exemplary embodiment.

[0050] Figure 15-18 The figure is an airflow path diagram of a downward air outlet mode of an indoor unit of a cabinet-type air conditioner according to an exemplary embodiment.

[0051] Figure 19-22 The figure is an airflow path diagram of a cabinet-type air conditioner indoor unit that blows air up and down simultaneously according to an exemplary embodiment.

[0052] Fig.23 It is an air flow path diagram of a sterilization state of a cabinet-type air-conditioning indoor unit in a top and bottom simultaneous air outlet mode according to an exemplary embodiment.

[0053] Fig.24 The figure is a sterilization flow chart of a cabinet air conditioner indoor unit according to an exemplary embodiment.

[0054] The reference numerals are as follows:

[0055] 1. Shell; 1a. Air inlet component; 1b. Panel component; 1d. Base component; 11. Upper air outlet; 12. Upper air inlet; 13. Lower air outlet; 14. Lower air inlet; 15. Shell channel; 2. Air duct assembly; 21. Air duct shell; 22. Upper air duct; 221. Upper main air duct; 222. Upper auxiliary air duct; 223. Upper air guide; 224. Upper wind shield component; 23. Upper fan cavity; 24. Middle air duct; 25. Lower fan cavity; 26. Lower air duct; 261. Lower main air duct; 262. Lower auxiliary air duct; 263. Lower air guide; 264. Lower wind shield component; 201. First air duct shell; 202. Second air duct shell; 3. Upper ventilation Frame; 4, upper fan; 41, upper volute tongue movement mechanism; 5, lower fan; 51, lower volute tongue movement mechanism; 6, upper partition; 61, first upper side; 62, second upper side; 63, third upper side; 64, first supporting rib; 65, first connecting channel; 7, lower partition; 71, first lower side; 72, second lower side; 73, third lower side; 74, second supporting rib; 75, second connecting channel; 81, first heat exchange part; 82, third heat exchange part; 83, second heat exchange part; 84, fourth heat exchange part; 9, lower ventilation frame; 10a, first sterilization component; 10b, second sterilization component; 10c, third sterilization component. DETAILED DESCRIPTION

[0056] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0057] The technical solution of this embodiment is described in detail below in conjunction with the accompanying drawings. The following implementation modes and examples may be combined with each other if there is no conflict.

[0058] According to an exemplary embodiment, Figure 1-Figure 6 As shown, this embodiment proposes an air duct assembly 2, which includes an air duct shell 21, an upper partition 6, a lower partition 7, an upper wind shielding component 224, a lower wind shielding component 264, an upper fan 4, a lower fan 5, an upper volute tongue motion mechanism 41, a lower volute tongue motion mechanism 51 and a sterilization component, wherein:

[0059] The upper air duct 22, the upper fan cavity 23, the middle air duct 24, the lower fan cavity 25 and the lower air duct 26 are formed inside the air duct shell 21, which are arranged from top to bottom. In a preferred embodiment, the air duct shell 21 includes a first air duct shell 201 and a second air duct shell 202, which are buckled together along the thickness direction of the air duct shell 21, and a plurality of retaining edges are provided in the first air duct shell 201 or the second air duct shell 202 to separate the air ducts and the fan cavities. When the first air duct shell 201 and the second air duct shell 202 are buckled together, the first air duct shell 201, the second air duct shell 202 and the plurality of retaining edges enclose the upper air duct 22, the lower air duct 26, the middle air duct 24, the upper fan cavity 23 and the lower fan cavity 25.

[0060] The upper partition 6 is arranged in the upper air duct 22, and divides the upper air duct 22 into an upper main air duct 221 and an upper auxiliary air duct 222. The lower partition 7 is arranged in the lower air duct 26, and divides the lower air duct 26 into a lower main air duct 261 and a lower auxiliary air duct 262. One end of the middle air duct 24 is connected to the upper auxiliary air duct 222 through the upper fan cavity 23, and the other end is connected to the lower auxiliary air duct 262 through the upper fan cavity 23. The air duct wall of the upper auxiliary air duct 222 is provided with an upper air guide 223, and the air duct wall of the lower auxiliary air duct 262 is provided with a lower air guide 263. The upper main air duct 221 and the lower main air duct 261 are larger air ducts, which bear the vast majority of air flowing in the air duct assembly 2 when the air duct assembly 2 is discharged up and down, and are the main source of air discharge. The upper auxiliary air duct 222 and the lower auxiliary air duct 262 are smaller air ducts, which are auxiliary air intake air ducts. In the application scenario of the cabinet air-conditioning indoor unit, when the cabinet air-conditioning indoor unit is in single downward air outlet mode, a part of the indoor air enters the upper auxiliary air duct 222 and enters the heat exchanger assembly through the upper air guide port 223 for heat exchange, thereby increasing the air intake volume of the single downward air outlet mode; when the cabinet air-conditioning indoor unit is in single upward air outlet mode, a part of the indoor air enters the lower auxiliary air duct 262 and enters the heat exchanger assembly through the lower air guide port 263 for heat exchange, thereby increasing the air intake volume of the single upward air outlet mode.

[0061] The upper wind shield component 224 is arranged at the upper air guide outlet 223, and the upper wind shield component 224 is designed to block the connection between the upper auxiliary air duct 222 and the middle air duct 24 while opening the upper air guide outlet 223 or to connect the upper auxiliary air duct 222 with the middle air duct 24 while closing the upper air guide outlet 223. The lower wind shield component 264 is arranged at the lower air guide outlet 263, and the lower wind shield component 264 is designed to block the connection between the lower auxiliary air duct 262 and the middle air duct 24 while opening the lower air guide outlet 263 or to connect the lower auxiliary air duct 262 with the middle air duct 24 while closing the lower air guide outlet 263. In one feasible manner, the upper wind shield component 224 includes a baffle and a drive motor. The baffle is rotatably arranged at the upper air outlet 223. The drive motor drives the baffle to switch between a position of opening the upper air outlet 223 and a position of closing the upper air outlet 223, thereby realizing different conduction states. The lower wind shield component 264 can also adopt the same combination of a baffle and a drive motor, which will not be introduced in detail here.

[0062] The upper fan 4 is arranged in the upper fan cavity 23, and the lower fan 5 is arranged in the lower fan cavity 25. The upper fan 4 has upper air inlet ends at both axial ends, and the lower fan 5 has lower air inlet ends at both axial ends. The upper fan 4 can suck air into the upper fan cavity 23 from the upper air inlet ends at both axial ends, and the lower fan 5 can suck air into the lower fan cavity 25 from the lower air inlet ends at both axial ends, thereby increasing the air intake. Exemplarily, the upper fan 4 and the lower fan 5 are both double-suction centrifugal fans.

[0063] The upper volute tongue motion mechanism 41 is arranged in the upper fan chamber 23, and the lower volute tongue motion mechanism 51 is arranged in the lower fan chamber 25. Both the upper volute tongue motion mechanism 41 and the lower volute tongue motion mechanism 51 can be driven to move. The upper volute tongue motion mechanism 41 can be driven to move to the first position or the second position. When the upper volute tongue motion mechanism 41 moves to the first position, the upper fan 4 discharges air upward through the upper main air duct 221. When the upper volute tongue motion mechanism 41 moves to the second position, the upper fan 4 discharges air downward through the middle air duct 24. The lower volute tongue motion mechanism 51 can be driven to move to the third position or the fourth position. When the lower volute tongue motion mechanism 51 is driven to move to the third position, the lower fan 5 discharges air upward through the middle air duct 24. When the lower volute tongue motion mechanism 51 is driven to move to the fourth position, the lower fan 5 discharges air downward through the lower main air duct 261. It should be noted that the upper volute tongue motion mechanism 41 and the lower volute tongue motion mechanism 51 in this embodiment are based on mature structures and are not described in detail in the embodiment.

[0064] The sterilization component includes a first sterilization component 10a, a second sterilization component 10b and a third sterilization component 10c. The first sterilization component 10a is arranged in the upper main air duct 221 and / or the upper auxiliary air duct 222, the second sterilization component 10b is arranged in the middle air duct 24, and the third sterilization component 10c is arranged in the lower main air duct 261 and / or the lower auxiliary air duct 262. The first sterilization component 10a, the second sterilization component 10b and the third sterilization component 10c can be controlled to start independently or synchronously. Each sterilization component is fixed to the air duct wall of the corresponding air duct by a fixing structure, and the fixing structure includes but is not limited to a slot structure, a mortise and tenon structure and a screw fixing, etc. The sterilization component is, for example, an ultraviolet sterilization device.

[0065] The different position states of the upper wind shield component 224, the lower wind shield component 264, the upper volute tongue movement mechanism 41 and the lower volute tongue movement mechanism 51 determine the different flow paths of the airflow in the air duct shell 21. The airflow flowing in different flow paths can be sterilized simultaneously through the first sterilization component 10a, the second sterilization component 10b and the third sterilization component 10c, or can be sterilized separately through the first sterilization component 10a and the third sterilization component 10c.

[0066] For example, combined with the application scenario of the indoor unit of the cabinet air conditioner, such as Figure 11-Figure 14 As shown, when the upper wind shield component 224 is in a position to close the upper air guide port 223, the lower wind shield component 264 is in a position to open the lower air guide port 263, the upper volute tongue movement mechanism 41 is in the first position, and the lower volute tongue movement mechanism 51 is in the third position, the air duct assembly 2 is in an upper air outlet mode, and the flow path of the airflow in the air duct shell 21 includes: lower auxiliary air duct 262→lower air guide port 263→lower fan cavity 25→middle air duct 24→upper auxiliary air duct 222, the first sterilization component 10a includes a first sterilization device arranged in the upper auxiliary air duct 222, the second sterilization component 10b includes a second sterilization device arranged in the middle air duct 24, and the third sterilization component 10c includes a third sterilization device arranged in the lower auxiliary air duct 262. At this time, the airflow in the flow path can be sterilized simultaneously through the first sterilization component 10a, the second sterilization component 10b and the third sterilization component 10c.

[0067] like Figure 15-18As shown, when the upper wind shield component 224 is in a position to open the upper air guide port 223, the lower wind shield component 264 is in a position to close the lower air guide port 263, the upper volute tongue movement mechanism 41 is in the second position, and the lower volute tongue movement mechanism 51 is in the fourth position, the air duct assembly 2 is in a lower air outlet mode, and the flow path of the airflow in the air duct shell 21 includes: upper auxiliary air duct 222→upper air guide port 223→upper fan cavity 23→middle air duct 24→lower auxiliary air duct 262, the first sterilization component 10a includes a first sterilization device arranged in the upper auxiliary air duct 222, the second sterilization component 10b includes a second sterilization device arranged in the middle air duct 24, and the third sterilization component 10c includes a third sterilization device arranged in the lower auxiliary air duct 262. At this time, the airflow in the flow path can be sterilized simultaneously through the first sterilization component 10a, the second sterilization component 10b and the third sterilization component 10c.

[0068] like Figure 19-22 As shown, when the upper wind shield component 224 is in a position to close the upper air duct 223, the lower wind shield component 264 is in a position to close the lower air duct 263, the upper volute tongue movement mechanism 41 is in the first position, and the lower volute tongue movement mechanism 51 is in the fourth position, the air duct assembly 2 is in a simultaneous upper and lower air outlet mode, and the flow path of the airflow in the air duct shell 21 includes: upper fan cavity 23→upper main air duct 221, lower fan cavity 25→lower main air duct 261, the first sterilization component 10a includes a fourth sterilization device arranged in the upper main air duct 221, and the third sterilization component 10c includes a fifth sterilization device arranged in the lower main air duct 261. At this time, the airflow in the flow path can be sterilized simultaneously through the first sterilization component 10a and the third sterilization component 10c.

[0069] In other possible ways, such as Fig.23As shown, when the air duct assembly 2 is in the state of simultaneously discharging air from top to bottom, the upper volute tongue motion mechanism 41 can also be driven to move to the fifth position, and the lower volute tongue motion mechanism 51 can also be driven to move to the sixth position. When the upper volute tongue motion mechanism 41 moves to the fifth position, the upper fan 4 simultaneously discharges air upward through the upper auxiliary air duct 222 and the upper main air duct 221, that is, at this time, the opening of the upper volute tongue motion mechanism 41 is located between the upper main air duct 221 and the upper auxiliary air duct 222, and the airflow in the upper fan cavity 23 can flow into the upper main air duct 221 and the upper auxiliary air duct 222 at the same time. The lower volute tongue motion mechanism 51 can also be driven to move to the sixth position. When the lower volute tongue motion mechanism 51 moves to the sixth position, the lower fan 5 discharges air downward through the lower auxiliary air duct 262 and the lower main air duct 261 at the same time. At this time, the opening of the lower volute tongue motion mechanism 51 is located between the lower main air duct 261 and the lower auxiliary air duct 262, and the airflow in the lower fan chamber 25 can flow into the lower main air duct 261 and the lower auxiliary air duct 262 at the same time. In this way, the first sterilization component 10a can sterilize the airflow flowing out of the upper fan chamber 23 regardless of whether it is in the upper main air duct 221 or the upper auxiliary air duct 222, and the third sterilization component 10c can sterilize the airflow flowing out of the lower fan chamber 25 regardless of whether it is in the lower main air duct 261 or the lower auxiliary air duct 262.

[0070] In a preferred embodiment, Figure 4 As shown, the first sterilization component 10a is arranged in the upper auxiliary air duct 222, the second sterilization component 10b is arranged in the middle air duct 24, and the third sterilization component 10c is arranged in the lower auxiliary air duct 262. One sterilization component can be arranged in the upper auxiliary air duct 222, the middle air duct 24, and the lower auxiliary air duct 262, respectively, or multiple sterilization components can be arranged, and the multiple sterilization components are arranged along the length direction of the upper auxiliary air duct 222, the middle air duct 24, or the lower auxiliary air duct 262. Since most of the airflow in the air duct assembly 2 is discharged through the upper main air duct 221 and the lower main air duct 261, this embodiment can reduce the influence on the outlet wind speed and air volume of the air duct assembly 2 while ensuring the sterilization effect and extending the sterilization path by respectively arranging the first sterilization component 10a and the second sterilization component 10b in the upper auxiliary air duct 222 and the lower auxiliary air duct 262.

[0071] When the air duct assembly 2 is in the upper and lower air outlet mode at the same time, upon receiving a sterilization instruction, the upper volute tongue movement mechanism 41 can be moved from the first position to the fifth position, and the lower volute tongue movement mechanism 51 can be moved from the fourth position to the sixth position so that the airflow flowing out of the upper fan chamber 23 can flow into the upper auxiliary air duct 222 and be sterilized through the first sterilization component 10a, and the airflow flowing out of the lower fan chamber 25 can flow into the lower auxiliary air duct 262 and be sterilized through the third sterilization component 10c. Since the airflow flowing out of the upper fan chamber 23 can still flow into the upper main air duct 221, and the airflow flowing out of the lower fan chamber 25 can still flow into the lower main air duct 261, the air outlet volume of the air duct assembly 2 will not be significantly reduced at this time, thereby ensuring the cooling and heating effects.

[0072] Further preferably, Figure 4 As shown, the first sterilization component 10a is arranged in the upper auxiliary air duct 222 and is located above the upper air guide port 223, the second sterilization component 10b is arranged in the air duct wall on one side of the middle air duct 24 opposite to the upper fan cavity 23 and / or the lower fan cavity 25, and the third sterilization component 10c is arranged in the lower auxiliary air duct 262 and is located above the lower air guide port 263, so that the first sterilization component 10a can fully contact with the airflow flowing through the upper auxiliary air duct 222, the second sterilization component 10b can fully contact with the airflow flowing through the middle air duct 24, and the third sterilization component 10c can fully contact with the airflow flowing through the lower auxiliary air duct 262, thereby significantly improving the sterilization effect. For example, as Figure 4 As shown, the sterilization component includes a first sterilization component 10a, two second sterilization components 10b and a third sterilization component 10c. The first sterilization component 10a is located on the side wall of the upper auxiliary air duct 222, the two second sterilization components 10b are located on the side wall of the middle air duct 24 near the upper air outlet 223 and the lower air outlet 263, and the third sterilization component 10c is located on the side wall of the lower auxiliary air duct 262.

[0073] Further, such as Figure 3-Figure 4 As shown, the upper volute tongue motion mechanism 41 and the upper partition 6 constitute a part of the volute profile of the upper fan 4, and the lower volute tongue motion mechanism 51 and the lower partition 7 constitute a part of the volute profile of the lower fan 5. Since the centrifugal fan is relatively noisy when running compared to other types of fans, in the embodiment, the volute tongue motion mechanism and the corresponding partition are matched to form the profile of the air duct under different air outlet modes, so that when the air conditioner is running, the noise generated by the air conditioner during operation can be reduced.

[0074] Specifically, Figure 4As shown, the upper separator 6 includes a first upper side edge 61, a second upper side edge 62 and a third upper side edge 63 connected in sequence, the first upper side edge 61 constitutes part of the air duct wall of the upper main air duct 221, the second upper side edge 62 constitutes part of the air duct wall of the upper auxiliary air duct 222, the third upper side edge 63 is opposite to the upper fan cavity 23 and is adapted to the curvature of the upper fan cavity 23, and a first supporting rib 64 is further connected between the first upper side edge 61 and the second upper side edge 62 to increase the assembly strength between the first upper side edge 61 and the second upper side edge 62. The lower separator 7 includes a first lower side edge 71, a second lower side edge 72 and a third lower side edge 73 connected in sequence, the first lower side edge 71 constitutes part of the air duct wall of the lower main air duct 261, the second lower side edge 72 constitutes part of the air duct wall of the lower auxiliary air duct 262, and the third lower side edge 73 is opposite to the lower fan cavity 25 and is adapted to the curvature of the lower fan cavity 25. A second supporting rib 74 is further connected between the first lower side 71 and the second lower side 72 to increase the assembly strength between the first lower side 71 and the second lower side 72 .

[0075] Among them, the upper volute tongue motion mechanism 41 and the third upper side 63 constitute a part of the volute profile of the upper fan 4, and the lower volute tongue motion mechanism 51 and the third lower side 73 constitute a part of the volute profile of the lower fan 5. In order to further reduce the noise generated by the air conditioner during operation, the third upper side 63 and the third lower side 73 are both constructed as arcs in this embodiment, so that under different air outlet modes of the air conditioner, the combination of the volute tongue motion mechanism (upper volute tongue motion mechanism 41, lower volute tongue motion mechanism 51) and the partition (upper partition 6, lower partition 7) and the wind shield component (upper wind shield component 224, lower wind shield component 264) to form the profile of the air duct can form a continuous arc curve, thereby further reducing wind noise.

[0076] In a preferred embodiment, the first upper side 61, the second upper side 62 and the third upper side 63 are enclosed to form a first connecting channel 65, and the first lower side 71, the second lower side 72 and the third lower side 73 are enclosed to form a second connecting channel 75. The first connecting channel 65 connects the two sides of the upper air duct 22 along the axial direction of the upper fan 4, so that the airflow outside the air duct assembly 2 can flow through the first connecting channel 65 and enter the upper fan cavity 23 from the upper air inlet ends at the axial ends of the upper fan 4. The second connecting channel 75 connects the two sides of the lower air duct 26 along the axial direction of the lower fan 5, so that the airflow outside the air duct assembly 2 can flow through the second connecting channel 75 and enter the lower fan cavity 25 from the lower air inlet ends at the axial ends of the lower fan 5, thereby increasing the air intake volume and air intake efficiency of the air duct assembly 2. In other achievable embodiments, the upper partition 6 and the lower partition 7 are solid blocks, which only play the role of dividing the upper air duct 22 and the lower air duct 26 into a main air duct and a secondary air duct.

[0077] The air duct assembly 2 of this embodiment has a long sterilization path, and can achieve effective sterilization during the sterilization process without affecting the normal use of the air conditioner, thereby improving the user experience.

[0078] According to an exemplary embodiment, Figure 7-10 As shown, this embodiment proposes a cabinet air conditioner indoor unit, which includes a housing 1, any air duct assembly 2 proposed in the above embodiments, and a heat exchanger assembly, wherein:

[0079] The upper portion of the housing 1 is provided with an upper air inlet 12 and an upper air outlet 11, and the lower portion of the housing 1 is provided with a lower air inlet 14 and a lower air outlet 13. Fig.10 As shown, the housing 1 includes a top plate, an air inlet component 1a, a panel component 1b and a base component 1d, and the sides of the top plate, the air inlet component 1a, the panel component 1b and the base component 1d are connected in pairs, and the two ends of the air inlet component 1a and the panel component 1b in the height direction are respectively connected to the top plate and the base component 1d. The top plate, the air inlet component 1a, the panel component 1b and the base component 1d are enclosed to form a chamber. Preferably, the upper air inlet 11 and the upper air inlet 12 are located on the upper side of the air inlet component 1a. The lower air inlet 13 is located on the lower side of the panel component 1b, and the lower air inlet 14 is located on the lower side of the air inlet component 1a. The upper air inlet 12 and the lower air inlet 14 assist in air intake, increase the air intake area of ​​the upper air inlet 11 and the lower air inlet 13 when switching between air inlet and outlet, solve the problem of small air volume and high noise of the cabinet air conditioner indoor unit, and at the same time, the upper air inlet 12 and the lower air inlet 14 are arranged at a position that the user cannot see, so as to improve the aesthetics of the cabinet air conditioner indoor unit.

[0080] The air duct assembly 2 is arranged in the shell 1, and a shell channel 15 is formed between the air duct shell 21 of the air duct assembly 2 and the shell 1. When the upper wind shielding component 224 opens the upper air guide port 223, the upper auxiliary air duct 222 is connected to the shell channel 15. When the lower wind shielding component 264 opens the lower air guide port 263, the lower auxiliary air duct 262 is connected to the shell channel 15. The upper air inlet 12 and the lower air inlet 14 are both connected to the shell channel 15. The upper main air duct 221 and the upper auxiliary air duct 222 are both connected to the upper air port 11, and the lower main air duct 261 and the lower auxiliary air duct 262 are both connected to the lower air port 13. The lower air duct 26 can be directly connected to the lower air port 13 or indirectly connected. In one example, as Fig.10 As shown, the cabinet air conditioner indoor unit further includes an upper ventilation frame 3 and a lower ventilation frame 9 . The upper ventilation frame 3 connects the upper air outlet 11 with the upper air duct 22 , and the lower ventilation frame 9 connects the lower air outlet 13 with the lower air duct 26 .

[0081] The heat exchanger assembly is disposed in the shell passage 15 and is used to perform heat exchange on the airflow flowing from the shell passage 15 to the heat exchanger assembly.

[0082] In one example, the heat exchanger assembly is arranged on both sides of the axial direction of the upper fan 4 (or the lower fan 5), and the heat exchanger assembly includes a first heat exchange part 81, a second heat exchange part 83, a third heat exchange part 82 and a fourth heat exchange part 84. The first heat exchange part 81 is connected to the second heat exchange part 83, and the third heat exchange part 82 is connected to the fourth heat exchange part 84. The first heat exchange part 81 and the third heat exchange part 82 are located on both sides of the axial direction of the upper fan 4 and correspond to the upper air inlet end. The second heat exchange part 83 and the fourth heat exchange part 84 are located on both sides of the axial direction of the lower fan 5 and correspond to the lower air inlet end. The first heat exchange part 81 and the third heat exchange part 82 are located on both sides of the axial direction of the lower fan 5 and correspond to the lower air inlet end. The three heat exchange parts 82 are inclined from top to bottom in the direction away from the air duct assembly 2, and the second heat exchange part 83 and the fourth heat exchange part 84 are inclined from top to bottom in the direction close to the air duct assembly 2 to increase the heat exchange area. At this time, the airflow entering the shell channel 15 from the upper air inlet 12 and the upper air guide port 223 can be sucked into the upper fan cavity 23 through the upper fan 4 after heat exchange through the first heat exchange part 81 and the third heat exchange part 82, and the airflow entering the shell channel 15 from the lower air inlet 14 and the lower air guide port 263 can be sucked into the lower fan cavity 25 through the lower fan 5 after heat exchange through the second heat exchange part 83 and the fourth heat exchange part 84.

[0083] Furthermore, the first heat exchange part 81, the second heat exchange part 83, the third heat exchange part 82 and the fourth heat exchange part 84 are all plate structures, and the angle ɑ between the heat exchange surface of the first heat exchange part 81 and the heat exchange surface of the second heat exchange part 83 satisfies: 90°<ɑ<180°, and the angle β between the heat exchange surface of the third heat exchange part 82 and the heat exchange surface of the fourth heat exchange part 84 satisfies and satisfies: 90°<β<180°.

[0084] In other achievable embodiments, the heat exchanger assembly is located on one side of the axial direction of the upper fan 4 (or the lower fan 5) and is sealed and connected to the air duct shell 21. A sealing cover is provided on the side of the air duct shell 21 away from the heat exchanger assembly, and the sealing cover is provided on the outer periphery of the first connecting channel 65, the second connecting channel 75, the upper fan 4 and the lower fan 5. The sealing cover is sealed and connected to the air duct shell 21, and a ventilation cavity is formed between the sealing cover and the air duct shell 21. The first connecting channel 65 and the second connecting channel 75 connect the side of the air duct shell 21 where the heat exchanger assembly is provided with the ventilation cavity. A part of the airflow after heat exchange by the heat exchanger assembly is directly sucked into the upper fan cavity 23 and the lower fan cavity 25 by the upper fan 4 and the lower fan 5, and the other part can enter the ventilation cavity through the first connecting channel 65 and the second connecting channel 75, and be sucked into the upper fan cavity 23 and the lower fan cavity 25 by the upper fan 4 and the lower fan 5 respectively.

[0085] The heat exchanger assembly includes a first heat exchange part 81 and a second heat exchange part 83 which are arranged opposite to each other in the upper and lower parts, and the first heat exchange part 81 is connected to the second heat exchange part 83. The first heat exchange part 81 is arranged opposite to the upper air inlet end of the upper fan 4, and the second heat exchange part 83 is arranged opposite to the lower air inlet end of the lower fan 5. The first heat exchange part 81 is inclined from top to bottom in the direction away from the air duct assembly 2, and the second heat exchange part 83 is inclined from top to bottom in the direction close to the air duct assembly 2 to increase the heat exchange area. At this time, the airflow entering the shell channel 15 from the upper air inlet 12 and the upper air guide port 223 can be sucked into the upper fan cavity 23 through the upper fan 4 after heat exchange through the first heat exchange part 81, and the airflow entering the shell channel 15 from the lower air inlet 14 and the lower air guide port 263 can be sucked into the lower fan cavity 25 through the lower fan 5 after heat exchange through the second heat exchange part 83.

[0086] The heat exchanger assembly of this embodiment can also be arranged only on one side of the upper fan 4 or the lower fan 5 in the axial direction to reduce the thickness of the cabinet air conditioner indoor unit and reduce the indoor space occupied by the cabinet air conditioner indoor unit.

[0087] In other feasible ways, this embodiment makes full use of the space between the air duct assembly 2 and the shell 1, optimizes the structure of the heat exchanger assembly, increases the heat exchange area of ​​the heat exchanger assembly, enables the air in the shell channel 15 to fully exchange heat with the heat exchanger assembly, and improves the cooling and heating effects.

[0088] The cabinet air conditioner indoor unit of this embodiment has an upper air outlet mode, a lower air outlet mode and an upper and lower simultaneous air outlet mode, wherein the upper air outlet mode is generally applied to the cooling mode, the lower air outlet mode is generally applied to the heating mode, and the upper and lower simultaneous air outlet mode can be applied to both the cooling mode and the heating mode. The working principles of these three air outlet modes are described in detail below:

[0089] like Figure 11-Figure 14As shown, when the cabinet air conditioner is running in the upper air outlet mode, the upper wind shielding component 224 is controlled to rotate to close the upper air guide port 223. At this time, the passage between the middle air duct 24 and the upper auxiliary air duct 222 is connected, and the upper volute tongue movement mechanism 41 is controlled to move to the first position, so that the upper fan 4 can discharge air upward through the upper main air duct 221, and the lower wind shielding component 264 is controlled to rotate to open the lower air guide port 263. At this time, the passage between the lower auxiliary air duct 262 and the middle air duct 24 is disconnected, and the lower volute tongue movement mechanism 51 is controlled to move to the third position, so that the lower fan 5 can discharge air upward through the middle air duct 24. At this time, the lower air duct 26 becomes the air inlet duct, and the lower air duct 26 becomes the air inlet duct. The airflow entering the air port 13 enters the lower air duct 26 and enters the shell channel 15 through the opened lower air guide port 263. The airflow entering from the upper air inlet 12 and the lower air inlet 14 directly enters the shell channel 15. After the airflow in the shell channel 15 exchanges heat with the heat exchanger assembly, a part of the airflow enters the upper fan chamber 23 under the action of the upper fan 4, and is discharged from the upper air port 11 through the upper main air duct 221 from the upper fan chamber 23. The other part of the airflow enters the lower fan chamber 25 under the action of the lower fan 5, and is discharged from the lower fan chamber 25 through the intermediate air duct 24 and the upper auxiliary air duct 222 and then from the upper air port 11. The airflow direction is referenced to Figure 11-Figure 14 Direction indicated by the arrow.

[0090] like Figure 15-18 As shown, when the air conditioner is running in the lower air outlet mode, the upper wind shielding component 224 is controlled to rotate to open the upper air guide port 223. At this time, the passage between the middle air duct 24 and the upper auxiliary air duct 222 is disconnected, and the upper volute tongue movement mechanism 41 is controlled to move to the second position to allow the upper fan 4 to discharge air downward through the middle air duct 24. The lower wind shielding component 264 is controlled to rotate to close the lower air guide port 263. At this time, the passage between the lower auxiliary air duct 262 and the middle air duct 24 is connected, and the lower volute tongue movement mechanism 51 is controlled to move to the fourth position to allow the lower fan 5 to discharge air downward through the lower main air duct 261. At this time, the upper air duct 22 becomes the air inlet duct, and the air outlet The airflow entering from the upper air duct 22 enters the upper air duct 223 and enters the shell channel 15 through the opened upper air guide port 223. The airflow entering from the upper air inlet 12 and the lower air inlet 14 directly enters the shell channel 15. After the airflow entering the shell channel 15 exchanges heat with the heat exchanger component, a part of the airflow enters the lower fan chamber 25 under the action of the lower fan 5, and is discharged from the lower fan chamber 25 through the lower main air duct 261 from the lower air outlet 13. The other part of the airflow enters the upper fan chamber 23 under the action of the upper fan 4, and is discharged from the upper fan chamber 23 through the intermediate air duct 24 and the lower auxiliary air duct 262 through the lower air outlet 13. The airflow direction is referenced to Figure 15-18 Direction indicated by the arrow.

[0091] When the air is discharged from both top and bottom, Figure 19-22As shown, the upper wind shield component 224 is controlled to rotate to close the upper air guide port 223, the upper volute tongue movement mechanism 41 is controlled to move to the first position, so that the upper fan 4 discharges air upward through the upper main air duct 221, the lower wind shield component 264 is controlled to rotate to close the lower air guide port 263, and the lower volute tongue movement mechanism 51 is controlled to move to the fourth position, so that the lower fan 5 discharges air downward through the lower main air duct 261. The airflow entering from the upper air inlet 12 and the lower air inlet 14 enters the shell channel 15, and the airflow entering the shell channel 15 exchanges heat with the heat exchanger assembly and enters the upper fan cavity 23 and the lower fan cavity 25 under the action of the upper fan 4 and the lower fan 5, and is discharged from the upper air port 11 through the upper main air duct 221 by the upper fan cavity 23, and is discharged from the lower air port 13 by the lower fan cavity 25 through the lower main air duct 261. The airflow direction refers to Figure 19-22 Direction indicated by the arrow.

[0092] In some embodiments, the sterilization mode of the cabinet air conditioner indoor unit includes a gentle mode and a strong mode, and the sterilization power of the sterilization component in the gentle mode is lower than the sterilization power in the strong mode. The cabinet air conditioner indoor unit also includes: a control device (not shown in the figure), which is configured to respond to the sterilization control instruction and determine the air outlet mode of the cabinet air conditioner indoor unit. When the air outlet mode of the cabinet air conditioner indoor unit is an upper air outlet mode and a lower air outlet mode, sterilization is started according to the sterilization mode determined by the sterilization control instruction, and when the air outlet mode of the cabinet air conditioner indoor unit is an upper and lower simultaneous air outlet mode, sterilization is started in a strong mode. Since in the upper air outlet mode or the lower air outlet mode, at least part of the air flow can be sterilized simultaneously through the first sterilization component 10a, the second sterilization component 10b and the third sterilization component 10c, a better sterilization effect is achieved in the case of a longer sterilization path, and the operation of the air conditioner is not affected. At this time, it can be determined whether to use the gentle mode or the strong mode according to the sterilization control instruction issued by the user. When the upper and lower air outlets are used simultaneously, the airflow only passes through the first sterilization component 10a and the second sterilization component 10b for sterilization. In order to ensure the sterilization effect, in this air outlet mode, no matter which sterilization mode the user chooses, sterilization is performed in a strong mode.

[0093] Furthermore, the control device is also configured to control the upper volute tongue movement mechanism 41 to move to the fifth position when the air outlet mode of the indoor unit of the cabinet air conditioner is the upper and lower simultaneous air outlet mode, so that the upper fan 4 discharges air upward through the upper auxiliary air duct 222 and the upper main air duct 221 at the same time, and to control the lower volute tongue movement mechanism 51 to move to the sixth position, so that the lower fan 5 discharges air downward through the lower auxiliary air duct 262 and the lower main air duct 261 at the same time, thereby achieving effective sterilization without affecting the air outlet volume and air outlet speed.

[0094] According to an exemplary embodiment, this embodiment proposes a sterilization method for a cabinet air conditioner indoor unit, and the sterilization method is applied to any cabinet air conditioner indoor unit proposed in the above embodiment. Fig.24 As shown in the flowchart, the sterilization method comprises the following steps:

[0095] S101, responding to the sterilization control instruction, determining the air outlet mode of the indoor unit of the cabinet air conditioner;

[0096] S102. When the air outlet mode of the indoor unit of the cabinet air conditioner is the upper air outlet mode or the lower air outlet mode, sterilization is started according to the sterilization mode determined by the sterilization control instruction; when the air outlet mode of the indoor unit of the cabinet air conditioner is the upper and lower simultaneous air outlet mode, sterilization is started in the strong mode.

[0097] In some embodiments, the sterilization method further comprises the following steps:

[0098] When the air outlet mode of the indoor unit of the cabinet air conditioner is the upper and lower simultaneous air outlet mode, the upper volute tongue movement mechanism 41 is also controlled to move to the fifth position, so that the upper fan 4 discharges air simultaneously through the upper auxiliary air duct 222 and the upper main air duct 221 upwards, and the lower volute tongue movement mechanism 51 is controlled to move to the sixth position, so that the lower fan 5 discharges air simultaneously through the lower auxiliary air duct 262 and the lower main air duct 261 downwards.

[0099] In some embodiments, the sterilization method further comprises the following steps:

[0100] The start-up states of the first sterilization component 10a, the second sterilization component 10b and the third sterilization component 10c are controlled according to the determined air outlet mode; when the air outlet mode of the cabinet air-conditioning indoor unit is the upper air outlet mode or the lower air outlet mode, the first sterilization component 10a, the second sterilization component 10b and the third sterilization component 10c are controlled to start at the same time; when the air outlet mode of the cabinet air-conditioning indoor unit is the upper and lower simultaneous air outlet mode, only the first sterilization component 10a and the third sterilization component 10c are controlled to start.

[0101] The above control method has been introduced in the embodiment of the device part and will not be repeated here.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. An air duct assembly, characterized in that: The air duct assembly (2) is arranged in a housing (1) of an indoor unit of the air conditioner, and the air duct assembly (2) comprises: An air duct shell (21) has an upper air duct (22), an upper fan chamber (23), an intermediate air duct (24), a lower fan chamber (25), and a lower air duct (26) arranged in sequence from top to bottom, a shell channel (15) is formed between the air duct shell (21) and the shell (1), and the shell channel (15) is connected to an air inlet of an indoor unit of the air conditioner; An upper separator (6) and a lower separator (7), the upper separator (6) comprising a first upper side edge (61), a second upper side edge (62) and a third upper side edge (63) connected in sequence, the first upper side edge (61), the second upper side edge (62) and the third upper side edge (63) enclosing a first connecting passage (65), the upper separator (6) being arranged in the upper air duct (22) and dividing the upper air duct (22) into an upper main air duct (221) and an upper auxiliary air duct (222), the lower separator (7) comprising a first lower side edge (71), a second lower side edge (72) and a third lower side edge (73) connected in sequence, the first lower side edge ( 71), the second lower side edge (72) and the third lower side edge (73) are enclosed to form a second connecting passage (75), the lower partition (7) is arranged in the lower air duct (26), and divides the lower air duct (26) into a lower main air duct (261) and a lower auxiliary air duct (262), one end of the intermediate air duct (24) is connected to the upper auxiliary air duct (222) through the upper fan cavity (23), and the other end is connected to the lower auxiliary air duct (262) through the lower fan cavity (25), the air duct wall of the upper auxiliary air duct (222) is provided with an upper air guide port (223), and the air duct wall of the lower auxiliary air duct (262) is provided with a lower air guide port (263); An upper wind shield component (224) and a lower wind shield component (264), wherein the upper wind shield component (224) is arranged at the upper air guide port (223), and the upper wind shield component (224) is designed to block the connection between the upper auxiliary air duct (222) and the middle air duct (24) when the upper air guide port (223) is opened, or to connect the upper auxiliary air duct (222) with the middle air duct (24) when the upper air guide port (223) is closed, and the upper wind shield component (224) is also designed to block the connection between the upper auxiliary air duct (222) and the middle air duct (24) when the upper air guide port (223) is opened. The lower wind shield component (264) is arranged at the lower air guide port (263); the lower wind shield component (264) is designed to block the communication between the lower auxiliary air duct (262) and the intermediate air duct (24) when the lower air guide port (263) is opened, or to enable the lower auxiliary air duct (262) to communicate with the intermediate air duct (24) when the lower air guide port (263) is closed; the lower wind shield component (264) is also designed to enable the lower auxiliary air duct (262) to communicate with the shell channel (15) when the lower air guide port (263) is opened; an upper fan (4) and a lower fan (5), wherein the upper fan (4) is arranged in the upper fan cavity (23), and the lower fan (5) is arranged in the lower fan cavity (25), and the upper fan (4) has upper air inlet ends at two axial ends, and the lower fan (5) has lower air inlet ends at two axial ends; The first connecting channel (65) connects two sides of the upper air duct (22) along the axial direction of the upper fan (4), and the second connecting channel (75) connects two sides of the lower air duct (26) along the axial direction of the lower fan (5); An upper volute tongue motion mechanism (41) and a lower volute tongue motion mechanism (51), wherein the upper volute tongue motion mechanism (41) is disposed in the upper fan chamber (23), and the lower volute tongue motion mechanism (51) is disposed in the lower fan chamber (25), wherein both the upper volute tongue motion mechanism (41) and the lower volute tongue motion mechanism (51) can be driven to move, and the upper volute tongue motion mechanism (41) can be driven to move to a first position or a second position. When the upper volute tongue motion mechanism (41) moves to the first position, the upper fan (4) moves upwards through the upper main air duct ( 221) to discharge air, when the upper volute tongue movement mechanism (41) moves to the second position, the upper fan (4) discharges air downwards through the middle air duct (24), and the lower volute tongue movement mechanism (51) can be driven to move to a third position or a fourth position, and when the lower volute tongue movement mechanism (51) is driven to move to the third position, the lower fan (5) discharges air upwards through the middle air duct (24), and when the lower volute tongue movement mechanism (51) is driven to move to the fourth position, the lower fan (5) discharges air downwards through the lower main air duct (261); A sterilization component, comprising a first sterilization component (10a), a second sterilization component (10b) and a third sterilization component (10c), wherein the first sterilization component (10a) is arranged in the upper main air duct (221) and / or the upper auxiliary air duct (222), the second sterilization component (10b) is arranged in the intermediate air duct (24), and the third sterilization component (10c) is arranged in the lower main air duct (261) and / or the lower auxiliary air duct (262); Different position states of the upper wind shield component (224), the lower wind shield component (264), the upper volute tongue movement mechanism (41), and the lower volute tongue movement mechanism (51) determine different flow paths of the airflow in the air duct shell (21); the airflow flowing along the different flow paths can be sterilized simultaneously through the first sterilization component (10a), the second sterilization component (10b), and the third sterilization component (10c), or can be sterilized separately through the first sterilization component (10a) and the third sterilization component (10c).

2. The air duct assembly according to claim 1, characterized in that: The upper volute tongue motion mechanism (41) can also be driven to move to a fifth position, and when the upper volute tongue motion mechanism (41) moves to the fifth position, the upper fan (4) discharges air upwards through the upper auxiliary air duct (222) and the upper main air duct (221) simultaneously; The lower volute tongue movement mechanism (51) can also be driven to move to a sixth position. When the lower volute tongue movement mechanism (51) moves to the sixth position, the lower fan (5) discharges air downwardly through the lower auxiliary air duct (262) and the lower main air duct (261) simultaneously.

3. The air duct assembly according to claim 2, characterized in that: The first sterilization component (10a) is arranged in the upper auxiliary air duct (222) and is located above the upper air guide port (223); The second sterilization component (10b) is arranged on a side of the air duct wall of the middle air duct (24) opposite to the upper fan cavity (23) and / or the lower fan cavity (25); The third sterilization component (10c) is arranged in the lower auxiliary air duct (262) and is located above the lower air guide port (263).

4. The air duct assembly according to claim 1, characterized in that: The first upper side edge (61) constitutes part of the air duct wall of the upper main air duct (221), the second upper side edge (62) constitutes part of the air duct wall of the upper auxiliary air duct (222), and the third upper side edge (63) is opposite to the upper fan cavity (23) and is adapted to the curvature of the upper fan cavity (23); The first lower side edge (71) constitutes part of the air duct wall of the lower main air duct (261), the second lower side edge (72) constitutes part of the air duct wall of the lower auxiliary air duct (262), and the third lower side edge (73) is opposite to the lower fan cavity (25) and is adapted to the curvature of the lower fan cavity (25).

5. A cabinet-type air conditioner indoor unit, characterized in that: The cabinet type air conditioner indoor unit comprises: A shell (1), the air inlet comprising an upper air inlet (12) and a lower air inlet (14), the upper portion of the shell (1) being provided with an upper air inlet (11), and the lower portion of the shell (1) being provided with a lower air inlet (13); The air duct assembly according to any one of claims 1 to 4, wherein the upper air inlet (12) and the lower air inlet (14) are both connected to the shell channel (15), the upper main air duct (221) and the upper auxiliary air duct (222) are both connected to the upper air duct (11), and the lower main air duct (261) and the lower auxiliary air duct (262) are both connected to the lower air duct (13); A heat exchanger assembly is arranged in the shell channel (15) and is used to perform heat exchange on the airflow flowing from the shell channel (15) to the air duct assembly (2).

6. The cabinet type air conditioner indoor unit according to claim 5, characterized in that: The heat exchanger assembly comprises a first heat exchange portion (81), a second heat exchange portion (83), a third heat exchange portion (82) and a fourth heat exchange portion (84); the first heat exchange portion (81) is connected to the second heat exchange portion (83); the third heat exchange portion (82) is connected to the fourth heat exchange portion (84); the first heat exchange portion (81) and the third heat exchange portion (82) are located on both sides of the axial direction of the upper fan (4) and both correspond to the upper air inlet end; the second heat exchange portion (83) and the fourth heat exchange portion (84) are located on both sides of the axial direction of the lower fan (5) and both correspond to the lower air inlet end; the first heat exchange portion (81) and the third heat exchange portion (82) are inclined from top to bottom in a direction away from the air duct assembly (2); and the second heat exchange portion (83) and the fourth heat exchange portion (84) are inclined from top to bottom in a direction close to the air duct assembly (2).

7. A method for sterilizing a cabinet air conditioner indoor unit, characterized in that: The sterilization method is applied to the cabinet air conditioner indoor unit according to claim 5 or 6, the sterilization mode of the cabinet air conditioner indoor unit includes a gentle mode and a strong mode, and the sterilization method includes: In response to the sterilization control instruction, determine the air outlet mode of the indoor unit of the cabinet air conditioner; When the air outlet mode of the indoor unit of the cabinet air conditioner is an upward air outlet mode or a downward air outlet mode, sterilization is started according to the sterilization mode determined by the sterilization control instruction; When the air outlet mode of the indoor unit of the cabinet air conditioner is the upper and lower simultaneous air outlet mode, the sterilization is started in the strong mode; The sterilization power of the sterilization component in the gentle mode is lower than that in the strong mode.

8. The sterilization method according to claim 7, characterized in that: The sterilization method also includes: When the air outlet mode of the cabinet air conditioner indoor unit is a simultaneous upper and lower air outlet mode, the upper volute tongue movement mechanism (41) is also controlled to move to a fifth position so that the upper fan (4) simultaneously discharges air upward through the upper auxiliary air duct (222) and the upper main air duct (221), and the lower volute tongue movement mechanism (51) is controlled to move to a sixth position so that the lower fan (5) simultaneously discharges air downward through the lower auxiliary air duct (262) and the lower main air duct (261).

9. The sterilization method according to claim 7, characterized in that: The sterilization method also includes: Controlling the start-up states of the first sterilization component (10a), the second sterilization component (10b), and the third sterilization component (10c) according to the determined air outlet mode; When the air outlet mode of the cabinet air conditioner indoor unit is an upward air outlet mode or a downward air outlet mode, controlling the first sterilization component (10a), the second sterilization component (10b) and the third sterilization component (10c) to start simultaneously; When the air outlet mode of the cabinet air conditioner indoor unit is a simultaneous upper and lower air outlet mode, only the first sterilization component (10a) and the third sterilization component (10c) are controlled to start.

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