Air duct assembly, cabinet air conditioner indoor unit and control 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 control method. The air duct assembly includes an air duct shell, which includes an upper air duct, an upper fan chamber, an intermediate air duct, a lower fan chamber and a lower air duct connected in sequence from top to bottom. The two upper air ducts of the upper air duct are provided with upper air guide ports, the two lower air ducts of the lower air duct are provided with lower air guide ports, and the two auxiliary air ducts of the intermediate air duct are cross-arranged; the upper wind shield component corresponds to the upper air guide port, and the lower wind shield component corresponds to the lower air guide port; the moving position of the upper volute tongue motion mechanism has a first position in which the upper centrifugal fan arranged in the upper fan chamber discharges air upward through the upper air duct, and a second position in which the air is discharged downward through one of the auxiliary air ducts; the lower volute tongue motion mechanism has a third position in which the lower centrifugal fan arranged in the lower fan chamber discharges air upward through another auxiliary air duct, and a fourth position in which the air is discharged downward through the lower air duct. The present invention can significantly improve the air output of the air duct assembly with a double-suction centrifugal fan.

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 air conditioner indoor unit and a control method. Background Art

[0002] In the related art, the fan types of cabinet air conditioner indoor units with up and down air outlet are mainly divided into two types. One is to use a single-suction centrifugal fan. The air conditioner indoor unit increases the air volume of single up air outlet or single down air outlet by adding a secondary air outlet duct in the axial direction of the single-suction centrifugal fan. The other is to use a double-suction centrifugal fan. Since both ends of the double-suction centrifugal fan in the axial direction need to absorb air, it is impossible to add a secondary air outlet duct in the axial direction of the double-suction centrifugal fan, resulting in the air volume of the cabinet air conditioner indoor unit with a double-suction centrifugal fan cannot be increased. Summary of the invention

[0003] In order to overcome the problem in the related art that the air volume of the indoor unit of the cabinet air conditioner with a double-suction centrifugal fan cannot be increased, the present invention proposes an air duct assembly, the air duct assembly comprising:

[0004] An air duct shell, the air duct shell comprises an upper air duct, an upper fan cavity, an intermediate air duct, a lower fan cavity and a lower air duct arranged in sequence from top to bottom, wherein the upper air duct comprises two upper air ducts, one end of the two upper air ducts is respectively connected to the upper fan cavity, and the air duct wall of each upper air duct is provided with an upper air guide port, the lower air duct comprises two lower air ducts, one end of the two lower air ducts is respectively connected to the lower fan cavity, and the air duct wall of each lower air duct is provided with a lower air guide port, the intermediate air duct comprises two auxiliary air ducts, the two ends of the two auxiliary air ducts are respectively connected to the upper fan cavity and the lower fan cavity, and the two auxiliary air ducts are cross-arranged;

[0005] An upper centrifugal fan and a lower centrifugal fan, wherein the upper centrifugal fan is arranged in the upper fan cavity, and the lower centrifugal fan is arranged in the lower fan cavity, and the upper centrifugal fan has upper air inlet ends at both axial ends, and the lower centrifugal fan has lower air inlet ends at both axial ends;

[0006] Two upper wind shield components and two lower wind shield components, the two upper wind shield components are arranged in one-to-one correspondence with the upper air guide ports of the two upper air ducts, and the two lower wind shield components are arranged in one-to-one correspondence with the lower air guide ports of the two lower air ducts, the upper wind shield components are designed to block the connection between the upper air duct and the upper fan cavity when the upper air guide ports are opened, or to connect the upper air duct with the upper fan cavity when the upper air guide ports are closed, and the lower wind shield components are designed to block the connection between the lower air duct and the lower fan cavity when the lower air guide ports are opened, or to connect the lower air duct with the lower fan cavity when the lower air guide ports are closed;

[0007] An upper volute tongue motion mechanism and a lower volute tongue motion mechanism, the upper volute tongue motion mechanism is arranged in the upper fan cavity, and the lower volute tongue motion mechanism is arranged in the lower fan cavity, the upper volute tongue motion mechanism can be driven to move to a first position or a second position, when the upper volute tongue motion mechanism moves to the first position, the upper centrifugal fan discharges air upward through the two upper air ducts, when the upper volute tongue motion mechanism moves to the second position, the upper centrifugal fan discharges air downward through one of the auxiliary air ducts, the lower volute tongue motion mechanism can be driven to move to a third position or a fourth position, when the lower volute tongue motion mechanism is driven to move to the third position, the lower centrifugal fan discharges air upward through another of the auxiliary air ducts, and when the lower volute tongue motion mechanism is driven to move to the fourth position, the lower centrifugal fan discharges air downward through the two lower air ducts.

[0008] In some embodiments, the two auxiliary air ducts are arranged along the axial direction of the upper centrifugal fan, the air duct wall of one of the two auxiliary air ducts is provided with a first groove, and the air duct wall of the other of the two auxiliary air ducts is provided with a second groove, the first groove and the second groove are arranged opposite to each other, and the first groove and the second groove are snap-fitted together.

[0009] In some embodiments, the air duct shell is provided with at least one communication channel, and the communication channel penetrates the air duct shell along the axial direction of the upper fan cavity.

[0010] In some embodiments, the communication passage is located between the two upper air ducts and / or between the two lower air ducts.

[0011] In some embodiments, the air duct shell includes a first shell wall and a second shell wall arranged along the shell width direction, and the connecting channel is located between the first shell wall and the two auxiliary air ducts, and / or between the second shell wall and the two auxiliary air ducts.

[0012] In some embodiments, the air duct shell includes a first shell surface and a second shell surface arranged along the axial direction of the upper centrifugal fan, and the air duct assembly includes a sealing cover, which is arranged on the first shell surface and forms a ventilation cavity between the sealing cover and the first shell surface. The connecting channel, the upper centrifugal fan and the lower centrifugal fan are located in the ventilation cavity at one end away from the second shell surface, and the connecting channel connects the ventilation cavity with the space located on one side of the second shell surface.

[0013] In some embodiments, the air duct assembly includes an upper ventilation frame and a lower ventilation frame, and one end of the two upper air ducts away from the upper fan cavity is connected to the upper ventilation frame, and one end of the two lower air ducts away from the lower fan cavity is connected to the lower ventilation frame.

[0014] A second aspect of the present invention provides a cabinet-type air-conditioning indoor unit, the cabinet-type air-conditioning indoor unit comprising:

[0015] A shell, wherein an upper air outlet is provided at the upper portion of the shell, a lower air outlet is provided at the lower portion of the shell, and the shell is also provided with an air inlet;

[0016] The air duct assembly described in any one of the items proposed in the first aspect of the present invention is arranged in the shell, and a shell channel is formed between the air duct assembly and the shell, one end of the two upper air ducts away from the upper fan cavity is communicated with the upper air outlet, and the upper air duct is communicated with the shell channel when the upper wind shielding component opens the upper air guide port, one end of the lower air duct away from the lower fan cavity is communicated with the lower air outlet, and the lower air duct is communicated with the shell channel when the lower wind shielding component opens the lower air guide port, and the air inlet is communicated with the shell channel;

[0017] The heat exchanger assembly is arranged in the shell channel and is used for exchanging heat for the airflow passing through the shell channel. The airflow after heat exchange by the heat exchanger assembly is sucked into the upper fan cavity and the lower fan cavity through the upper centrifugal fan and the lower centrifugal fan.

[0018] In some embodiments, the cabinet air conditioner indoor unit has an upper air outlet mode and a lower air outlet mode;

[0019] When the cabinet air conditioner indoor unit is in the upper air outlet mode, the upper wind shielding component closes the corresponding upper air guide port and connects the corresponding upper air duct with the passage of the upper fan chamber, the lower wind shielding component opens the corresponding lower air guide port and disconnects the corresponding lower air duct from the passage of the lower fan chamber, the upper volute tongue movement mechanism is in the first position, and the lower volute tongue movement mechanism is in the third position;

[0020] When the cabinet air-conditioning indoor unit is in the downward air outlet mode, the upper wind shield component opens the corresponding upper air guide port and disconnects the passage between the corresponding upper air duct and the upper fan cavity, the lower wind shield component closes the corresponding lower air guide port and connects the passage between the corresponding lower air duct and the lower fan cavity, the upper volute tongue motion mechanism is in the second position, and the lower volute tongue motion mechanism is in the fourth position.

[0021] A third aspect of the present invention provides a control method for a cabinet air conditioner indoor unit, the control method being applied to any one of the cabinet air conditioner indoor units provided in the second aspect of the present invention, the control method comprising:

[0022] Get the operation mode of the indoor unit of the cabinet air conditioner;

[0023] When the indoor unit of the cabinet air conditioner is in cooling mode, the upper wind shield component is controlled to close the corresponding upper air guide port, and all the lower wind shield components are controlled to open the corresponding lower air guide ports, the upper volute tongue motion mechanism is controlled to be in the first position, and the lower volute tongue motion mechanism is controlled to be in the third position, and the upper centrifugal fan and the lower centrifugal fan are controlled to start;

[0024] When the indoor unit of the cabinet air conditioner is in heating mode, all upper wind shield components are controlled to open the corresponding upper air ducts, and the lower wind shield components are controlled to close the corresponding lower air ducts, the upper volute tongue movement mechanism is controlled to be in the second position, and the lower volute tongue movement mechanism is controlled to be in the fourth position, and the upper centrifugal fan and the lower centrifugal fan are controlled to start.

[0025] The technical solution of the present invention may include the following beneficial effects: when the air duct assembly of the present invention is in the upper air outlet mode, the wind blown out by the lower centrifugal fan enters one of the auxiliary air ducts, and enters the upper air duct through the auxiliary air duct, and is blown out after merging with the wind blown into the upper air duct by the upper centrifugal fan, thereby increasing the air volume of the upper air outlet mode; at the same time, when the air duct assembly is in the lower air outlet mode, the wind blown out by the upper centrifugal fan enters another auxiliary air duct, and enters the lower air duct through the auxiliary air duct, and is blown out after merging with the wind blown into the lower air duct by the lower centrifugal fan, thereby increasing the air volume of the lower air outlet mode. The present invention significantly improves the air volume of the air duct assembly with a double-suction centrifugal fan in the upper air outlet mode and the lower air outlet mode, thereby improving the performance parameters of the air conditioner and improving the comfort of the air conditioner. At the same time, by opening an upper air duct in the upper air duct, opening a lower air duct in the lower air duct, and controlling the opening and closing states of the upper air duct and the lower air duct in combination with different air outlet modes, the reversible air supply area is increased, and the air supply volume of the whole machine is further improved.

[0026] 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 invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 is a structural diagram of an air duct assembly according to an exemplary embodiment.

[0029] Figure 2 is an exploded view of an air duct assembly according to an exemplary embodiment.

[0030] Figure 3 is an exploded view of a cabinet-type air-conditioner indoor unit according to an exemplary embodiment.

[0031] Figure 4 and Figure 5The figure is an airflow path diagram of a cabinet-type air-conditioning indoor unit in a top air outlet mode according to an exemplary embodiment.

[0032] Figure 6 and Figure 7 The figure is an airflow path diagram of a cabinet-type air conditioner indoor unit in a downward air outlet mode according to an exemplary embodiment.

[0033] Figure 8 The figure is an airflow path diagram of a cabinet-type air conditioner indoor unit from a cross-sectional perspective according to an exemplary embodiment.

[0034] The reference numerals are as follows:

[0035] 1. Shell; 1a. Air inlet component; 1b. Panel component; 1c. Top cover component; 1d. Base component; 1f. Left side panel; 1g. Right side panel; 11. Upper air outlet; 13. Lower air outlet; 14. Air inlet; 15. Shell channel; 2. Air duct assembly; 201. First air duct shell; 202. Second air duct shell; 203. First shell wall; 204. Second shell wall; 213. Upper air guide port; 214. Lower air guide port; 2101. First connecting channel; 2102. Second connecting channel; 2103. Third connecting channel; 2104. Fourth connecting channel; 22. Upper wind shield component; 23. Lower wind shield component; 24. Sealing cover; 25. Upper volute tongue movement mechanism; 26. Lower volute tongue movement mechanism; 27. Upper air duct; 2701. Upper air duct; 28. Middle air duct; 2801. Auxiliary air duct; 2802. First groove; 2803. Second groove; 29. ​​Lower air duct; 2901. Lower air duct; 30. Upper fan cavity; 31. Lower fan cavity; 3. Upper ventilation frame; 4. Lower ventilation frame; 5. Upper centrifugal fan; 501. Upper centrifugal fan blade; 502. Upper motor bracket; 503. Upper motor; 6. Lower centrifugal fan; 601. Lower centrifugal fan blade; 602. Lower motor bracket; 603. Lower motor; 7. Heat exchanger assembly; 8. Filter; 9. Inlet fan. DETAILED DESCRIPTION

[0036] 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.

[0037] Since both ends of the double-suction centrifugal fan in the axial direction need to suck air, it is impossible to add an auxiliary air outlet duct in the axial direction of the double-suction centrifugal fan, resulting in that the air volume of the cabinet air conditioner indoor unit with the double-suction centrifugal fan cannot be improved. In order to solve this problem, this embodiment proposes a duct assembly, a cabinet air conditioner indoor unit and a control method, wherein the duct assembly includes a duct shell, an upper centrifugal fan, a lower centrifugal fan, an upper volute tongue motion mechanism and a lower volute tongue motion mechanism, and the duct shell includes an upper duct, an upper fan cavity, an intermediate duct, a lower fan cavity and a lower duct arranged in sequence from top to bottom, wherein the upper duct includes two upper ducts, one end of the two upper ducts is respectively connected to the upper fan cavity, the lower duct includes two lower ducts, one end of the two lower ducts is respectively connected to the lower fan cavity, the intermediate duct includes two auxiliary ducts, the two ends of the two auxiliary ducts are respectively connected to the upper fan cavity and the lower fan cavity, and the two auxiliary ducts are arranged crosswise.

[0038] The upper centrifugal fan and the lower centrifugal fan are respectively arranged in the upper fan chamber and the lower fan chamber, and both the upper centrifugal fan and the lower centrifugal fan are double-suction centrifugal fans. 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. The upper volute tongue motion mechanism can be driven to move to the first position or the second position. When the upper volute tongue motion mechanism moves to the first position, the upper centrifugal fan discharges air upward through two upper air ducts. When the upper volute tongue motion mechanism moves to the second position, the upper centrifugal fan discharges air downward through one of the auxiliary air ducts. The lower volute tongue motion mechanism can be driven to move to the third position or the fourth position. When the lower volute tongue motion mechanism is driven to move to the third position, the lower centrifugal fan discharges air upward through another auxiliary air duct. When the lower volute tongue motion mechanism is driven to move to the fourth position, the lower centrifugal fan discharges air downward through two lower air ducts. The air duct assembly of this embodiment can achieve that when in the upper air outlet mode, the wind blown out by the lower centrifugal fan enters one of the auxiliary air ducts, and enters the upper air duct through the auxiliary air duct, merges with the wind blown into the upper air duct by the upper centrifugal fan, and then blows out, thereby increasing the air outlet volume of the upper air outlet mode; at the same time, when in the lower air outlet mode, the wind blown out by the upper centrifugal fan enters another auxiliary air duct, and enters the lower air duct through the auxiliary air duct, merges with the wind blown into the lower air duct by the lower centrifugal fan, and then blows out, thereby increasing the air outlet volume of the lower air outlet mode.

[0039] In addition, in this embodiment, an upper air duct is provided on the duct wall of each upper air duct, a lower air duct is provided on the duct wall of each lower air duct, and two upper wind shielding components are provided in a one-to-one correspondence at the upper air ducts of the two upper air ducts, and two lower wind shielding components are provided in a one-to-one correspondence at the lower air ducts of the two lower air ducts. The upper wind shielding components are designed to block the connection between the upper air duct and the upper fan cavity when the upper air duct is opened, or to connect the upper air duct with the upper fan cavity when the upper air duct is closed, and the lower wind shielding components are designed to block the connection between the lower air duct and the lower fan cavity when the lower air duct is opened, or to connect the lower air duct with the lower fan cavity when the lower air duct is closed. This embodiment also increases the reversible air supply area and further improves the air supply volume of the whole machine by opening an upper air duct in the upper air duct and a lower air duct in the lower air duct, and controlling the opening and closing states of the upper air duct and the lower air duct in combination with different air outlet modes.

[0040] The present embodiment is described in detail below in conjunction with the accompanying drawings. The following embodiments and examples may be combined with each other unless there is any conflict.

[0041] According to an exemplary embodiment, this embodiment proposes an air duct assembly 2, such as Figure 1-Figure 4 , Figure 6 As shown, the air duct assembly 2 includes an air duct shell, an upper centrifugal fan 5, a lower centrifugal fan 6, two upper wind shielding components 22, two lower wind shielding components 23, an upper volute tongue motion mechanism 25 and a lower volute tongue motion mechanism 26. Among them:

[0042] The air duct shell includes an upper air duct 27, an upper fan cavity 30, an intermediate air duct 28, a lower fan cavity 31 and a lower air duct 29 which are arranged in sequence from top to bottom, wherein the upper air duct 27 includes two upper air ducts 2701, one end of the two upper air ducts 2701 are respectively connected to the upper fan cavity 30, and the air duct wall of each upper air duct 2701 is provided with an upper air guide port 213, the lower air duct 29 includes two lower air ducts 2901, one end of the two lower air ducts 2901 are respectively connected to the lower fan cavity 31, and the air duct wall of each lower air duct 2901 is provided with a lower air guide port 214, the intermediate air duct 28 includes two auxiliary air ducts 2801, the two ends of the two auxiliary air ducts 2801 are respectively connected to the upper fan cavity 30 and the lower fan cavity 31, and the two auxiliary air ducts 2801 are cross-arranged without being connected. In a preferred embodiment, the air duct shell includes a first air duct shell 201 and a second air duct shell 202, and the first air duct shell 201 and the second air duct shell 202 are buckled together along the thickness direction of the air duct shell. The first air duct shell 201 or the second air duct shell 202 is provided with a plurality of retaining edges for separating each air duct and each fan cavity. 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 two upper air ducts 2701, two lower air ducts 2901, two auxiliary air ducts 2801 and two fan cavities.

[0043] Specific, combined Figure 4 and Figure 6 As shown, the upper air duct 27 includes a first upper air duct located on the left and a second upper air duct located on the right, the middle air duct 28 includes a first auxiliary air duct and a second auxiliary air duct arranged to intersect, the lower air duct 29 includes a first lower air duct located on the left and a second lower air duct located on the right, the air duct walls of the first upper air duct and the second upper air duct are respectively provided with upper air guide ports 213, and the air duct walls of the first lower air duct and the second lower air duct are respectively provided with lower air guide ports 214. One end of the first upper air duct is connected to the left side of the upper part of the upper fan chamber 30, one end of the second upper air duct is connected to the right side of the upper part of the upper fan chamber 30, and the ends of the first upper air duct and the second upper air duct away from the upper fan chamber 30 are both connected to the external environment of the upper part of the air duct assembly 2. One end of the first lower air duct is connected to the left side of the lower part of the lower fan chamber 31, one end of the second lower air duct is connected to the right side of the lower part of the lower fan chamber 31, and the ends of the first lower air duct and the second lower air duct away from the lower fan chamber 31 are both connected to the external environment of the lower part of the air duct assembly 2. The first sub-air duct is not connected to the second sub-air duct, one end of the first sub-air duct is connected to the right side of the upper part of the upper fan cavity 30, and the other end is connected to the left side of the upper part of the lower fan cavity 31, and one end of the second sub-air duct is connected to the left side of the upper part of the upper fan cavity 30, and the other end is connected to the right side of the upper part of the lower fan cavity 31.

[0044] The upper centrifugal fan 5 is arranged in the upper fan chamber 30, and the lower centrifugal fan 6 is arranged in the lower fan chamber 31. Both the upper centrifugal fan 5 and the lower centrifugal fan 6 are double-suction centrifugal fans, that is, both ends of the upper centrifugal fan 5 and the lower centrifugal fan 6 in the axial direction have guide rings, and wind can be sucked in from both ends of the axial direction. Specifically, the upper centrifugal fan 5 includes an upper centrifugal fan blade 501, an upper motor bracket 502 and an upper motor 503, and the lower centrifugal fan 6 includes a lower centrifugal fan blade 601, a lower motor bracket 602 and a lower motor 603. The upper centrifugal fan 5 has an upper air inlet end at both ends of the axial direction, and the lower centrifugal fan 6 has a lower air inlet end at both ends of the axial direction. The upper centrifugal fan 5 can suck air into the upper fan chamber 30 from the upper air inlet ends at both ends of the axial direction, and the lower centrifugal fan 6 can suck air into the lower fan chamber 31 from the lower air inlet ends at both ends of the axial direction, thereby increasing the air intake of the whole machine.

[0045] The upper volute tongue motion mechanism 25 is arranged in the upper fan chamber 30, and the lower volute tongue motion mechanism 26 is arranged in the lower fan chamber 31. The volute tongue profiles of the upper volute tongue motion mechanism 25 and the lower volute tongue mechanism can be rotated and adjusted to achieve the change of the air outlet direction. The upper volute tongue motion mechanism 25 can be driven to move to the first position or the second position. When the upper volute tongue motion mechanism 25 moves to the first position, the upper centrifugal fan 5 discharges air upward through two upper air ducts 2701. When the upper volute tongue motion mechanism 25 moves to the second position, the upper centrifugal fan 5 discharges air downward through one of the auxiliary air ducts 2801. The lower volute tongue motion mechanism 26 can be driven to move to the third position or the fourth position. When the lower volute tongue motion mechanism 26 is driven to move to the third position, the lower centrifugal fan 6 discharges air upward through another auxiliary air duct 2801. When the lower volute tongue motion mechanism 26 is driven to move to the fourth position, the lower centrifugal fan 6 discharges air downward through two lower air ducts 2901.

[0046] Combination Figure 4 and Figure 5 When the upper volute tongue motion mechanism 25 is in the first position, and the lower volute tongue motion mechanism 26 is in the third position, the upper volute tongue motion mechanism 25 is between the end of the first auxiliary air duct close to the upper fan cavity 30 and the first upper air duct, and the lower volute tongue motion mechanism 26 is between the end of the first auxiliary air duct close to the lower fan cavity 31 and the second lower air duct. At this time, the upper centrifugal fan 5 discharges air upward through the upper volute tongue motion mechanism 25 through the first upper air duct and the second upper air duct, and the lower centrifugal fan 6 discharges air upward through the lower volute tongue motion mechanism 26 through the first auxiliary air duct. The air in the first auxiliary air duct further flows out of the air duct shell through the upper fan cavity 30 and the second upper air duct. At this time, the upper air outlet mode of the air duct assembly 2 can be realized. Combined with Figure 6 and Figure 7 When the upper volute tongue motion mechanism 25 is in the second position and the lower volute tongue motion mechanism 26 is in the fourth position, the upper volute tongue motion mechanism 25 is between one end of the second auxiliary air duct close to the upper fan cavity 30 and the second upper air duct, and the lower volute tongue motion mechanism 26 is between one end of the second auxiliary air duct close to the lower fan cavity 31 and the first lower air duct. At this time, the wind blown out by the lower centrifugal fan 6 is discharged downward through the first lower air duct and the second lower air duct, and the wind blown out by the upper centrifugal fan 5 is discharged downward through the second auxiliary air duct. The wind in the second auxiliary air duct further flows out of the air duct shell through the lower fan cavity 31 and the second lower air duct. At this time, the downward air outlet mode of the air duct assembly 2 can be realized.

[0047] It should be noted that the upper volute tongue motion mechanism 25 and the lower volute tongue motion mechanism 26 in this embodiment are based on mature structures and will not be described in detail in the embodiment.

[0048] The two upper wind shield components 22 are arranged in a one-to-one correspondence with the upper air outlets 213 of the two upper air ducts 2701, and the two lower wind shield components 23 are arranged in a one-to-one correspondence with the lower air outlets 214 of the two lower air ducts 2901. The upper wind shield components 22 are designed to block the connection between the upper air ducts 2701 and the upper fan cavity 30 while opening the upper air outlets 213, or to connect the upper air duct 2701 with the upper fan cavity 30 while closing the upper air outlets 213. The lower wind shield components 23 are designed to block the connection between the lower air duct 2901 and the lower fan cavity 31 while opening the lower air outlets 214, or to connect the lower air duct 2901 with the lower fan cavity 31 while closing the lower air outlets 214. In one achievable manner, the upper wind shield component 22 includes a baffle and a drive motor, the baffle is rotatably disposed at the upper air duct 213, and the drive motor drives the baffle to switch between a position of opening the upper air duct 213 and a position of closing the upper air duct 213, thereby achieving different conduction states, and the lower wind shield component 23 can also adopt the same combination of a baffle and a drive motor, which will not be repeated here. The design of the upper air duct 213 and the lower air duct 214 can increase the air volume of the air duct assembly 2, and the opening and closing states of the upper air duct 213 and the lower air duct 214 can be combined with different air outlet modes to achieve the effect of increasing the air volume under different air outlet modes.

[0049] Specifically, refer to Figure 4 , Figure 5 and Figure 8 As shown, when in the upper air outlet mode, the two upper wind shielding parts 22 can be controlled to close the two upper air guides 213 while connecting the first upper air duct and the second upper air duct to the passage of the upper fan chamber 30, and the two lower wind shielding parts 23 can open the two lower air guides 214 while disconnecting the first lower air duct and the second lower air duct from the passage of the lower fan chamber 31. At this time, the first lower air duct and the second lower air duct are transformed into air inlet channels, and the airflow entering the first lower air duct and the second lower air duct can flow out of the air duct shell through the two lower air guides 214, and be sucked in by the upper centrifugal fan 5 and the lower centrifugal fan 6, and then blown out from the first upper air duct and the second upper air duct. Similarly, refer to Figure 6-Figure 8 When in the downward air outlet mode, the two lower wind shielding parts 23 can be controlled to close the two lower air guide ports 214 while connecting the first lower air duct and the second lower air duct to the passage of the lower fan chamber 31; the two upper wind shielding parts 22 can open the two upper air guide ports 213 while disconnecting the first upper air duct and the second upper air duct from the passage of the upper fan chamber 30. At this time, the first upper air duct and the second upper air duct are transformed into air inlet channels, and the airflow entering the first upper air duct and the second upper air duct can flow out of the air duct shell through the two upper air guide ports 213, and be sucked in by the upper centrifugal fan 5 and the lower centrifugal fan 6, and then blown out from the first lower air duct and the second lower air duct.

[0050] In some embodiments, the two auxiliary air ducts 2801 are arranged along the axial direction of the upper centrifugal fan 5, and the air duct wall of one of the two auxiliary air ducts 2801 is provided with a first groove 2802, and the air duct wall of the other of the two auxiliary air ducts 2801 is provided with a second groove 2803, the first groove 2802 and the second groove 2803 are arranged opposite to each other, and the first groove 2802 and the second groove 2803 are snap-fitted together, thereby reducing the thickness of the air duct shell and reducing the space occupied by the air duct assembly 2.

[0051] In some embodiments, the air duct shell is provided with at least one communication channel, which penetrates the air duct shell along the axial direction of the upper fan chamber 30, so that the airflow on both sides of the upper fan chamber 30 in the axial direction can flow through the communication channel. The setting position of the communication channel in the air duct shell is not limited, and can be set at the upper part, lower part or middle part of the air duct shell. In one example, Figure 4 and Figure 6 As shown, the communication channel is located between the two upper air ducts 2701 and / or between the two lower air ducts 2901, so as to reasonably utilize the space between the two upper air ducts 2701 and the two lower air ducts 2901. In another example, as Figure 4 and Figure 6 As shown, the air duct shell includes a first shell wall 203 and a second shell wall 204 arranged along its width direction, and the connecting passage is located between the first shell wall 203 and the two auxiliary air ducts 2801, and / or between the second shell wall 204 and the two auxiliary air ducts 2801, so as to reasonably utilize the space between the first shell wall 203, the second shell wall 204 and the two auxiliary air ducts 2801. The number of connecting passages in this embodiment is not limited and can be flexibly designed according to needs. In a preferred embodiment, as shown in FIG. Figure 4 and Figure 6 As shown, a first connecting channel 2101 is provided between the first upper air duct and the second upper air duct, a second connecting channel 2102 is provided between the first lower air duct and the second lower air duct, a third connecting channel 2103 is provided between the first shell wall 203 and the two auxiliary air ducts 2801, and a fourth connecting channel 2104 is provided between the second shell wall 204 and the two auxiliary air ducts 2801, which significantly improves the circulation efficiency of the airflow on both axial sides of the upper fan cavity 30 without increasing the volume of the air duct assembly 2.

[0052] In some embodiments, the air duct shell includes a first shell surface and a second shell surface arranged along the axial direction of the upper centrifugal fan 5, the first shell surface is the shell surface of the second air duct shell 202 away from the first air duct shell 201, and the second shell surface is the shell surface of the first air duct shell 201 away from the second air duct shell 202. The air duct assembly 2 includes a sealing cover 24, which is arranged on the first shell surface and encloses a ventilation cavity with the first shell surface, and the connecting channel, the upper centrifugal fan 5 and the lower centrifugal fan 6 are located in the ventilation cavity at one end away from the second shell surface, and the surrounding edges of the sealing cover 24 are sealed and connected with the first shell surface to prevent the airflow without heat exchange outside the sealing cover 24 from directly entering the ventilation cavity. The connecting channel connects the ventilation cavity with the space located on one side of the second shell surface. Part of the airflow on one side of the second shell surface enters the upper fan chamber 30 and the lower fan chamber 31 through the air inlet end of the upper centrifugal fan 5 and the lower centrifugal fan 6 away from the sealing cover 24, and the other part enters the ventilation chamber through the connecting channel and is sucked into the upper fan chamber 30 and the lower fan chamber 31 by the air inlet end of the upper centrifugal fan 5 and the lower centrifugal fan 6 located in the sealing cover 24. In the scenario where the air duct assembly 2 is applied to the indoor unit of the cabinet air conditioner, the heat exchanger assembly 7 can be set only on the side close to the second shell surface, and the airflow after heat exchange by the heat exchanger assembly 7 enters the space between the second shell surface of the air duct shell and the heat exchanger assembly 7 and is sucked into the fan chamber, thereby reducing the size of the radiator assembly, thereby reducing the size of the whole machine, and reducing the cost. In addition, the sealing cover 24 also plays a role in isolating the fan noise, while greatly increasing the air volume.

[0053] In some embodiments, Figure 3 As shown, the air duct assembly 2 includes an upper ventilation frame 3 and a lower ventilation frame 4, and the ends of the two upper air ducts 2701 away from the upper fan chamber 30 are both connected to the upper ventilation frame 3, and the ends of the two lower air ducts 2901 away from the lower fan chamber 31 are both connected to the lower ventilation frame 4. The upper ventilation frame 3 is provided with an upper air outlet, and the lower ventilation frame 4 is provided with a lower air outlet. In the air conditioner application scenario, the upper air outlet corresponds to the upper air outlet 11 of the air conditioner indoor unit, and the lower air outlet corresponds to the lower air outlet 13 of the air conditioner indoor unit. In this embodiment, by setting the upper ventilation frame 3 and the lower ventilation frame 4, the two upper air ducts 2701 are connected to the upper air outlet 11 of the air conditioner indoor unit, and the two lower air ducts 2901 are connected to the lower air outlet 13 of the air conditioner indoor unit.

[0054] According to an exemplary embodiment, this embodiment provides a cabinet-type air conditioner indoor unit, such as Figure 3-Figure 8 As shown, the cabinet air conditioner indoor unit includes a housing 1, a heat exchanger assembly 7 and any air duct assembly 2 proposed in the above embodiments. An upper air port 11 is provided at the upper portion of the housing 1, a lower air port 13 is provided at the lower portion of the housing 1, and the housing 1 is also provided with an air inlet 14. An air inlet grille is provided at the air inlet 14, and air guide plates are provided at the upper air port 11 and the lower air port 13, respectively.

[0055] In one embodiment, if Figure 3 As shown, the housing 1 includes a top cover component 1c, an air inlet component 1a, a panel component 1b, a base component 1d, a left side plate 1f and a right side plate 1g. The sides of the top cover component 1c, the air inlet component 1a, the panel component 1b, the base component 1d, the left side plate 1f and the right side plate 1g are connected in pairs, and the two ends of the air inlet component 1a, the panel component 1b, the left side plate 1f and the right side plate 1g in the height direction are respectively connected to the top cover component 1c and the base component 1d. The top cover component 1c, the air inlet component 1a, the panel component 1b, the base component 1d, the left side plate 1f and the right side plate 1g are enclosed to form a chamber. Preferably, the upper air vent 11 is located on the top cover, the lower air vent 13 is located on the lower side of the panel component 1b, and the air inlet 14 is located on the lower side of the air inlet component 1a. The air inlet 14 assists the air intake, increases the air intake area when the upper air vent 11 and the lower air vent 13 are switched between air inlet and outlet, and solves the problem of small air volume and high noise of the indoor unit of the cabinet air conditioner. The air inlet 14 of this embodiment may also have multiple air inlets 14. For example, the housing 1 is provided with two air inlets 14, which are respectively provided at the upper and lower parts of the air inlet component 1a. In a preferred embodiment, the cabinet air conditioner indoor unit further includes an air inlet fan 9, which is provided in the housing 1 and is arranged opposite to the air inlet 14 to increase the air intake volume and air intake efficiency of the air inlet 14. The air inlet fan 9 is, for example, a centrifugal fan.

[0056] The air duct assembly 2 is arranged in the shell 1, and a shell channel 15 is formed between the air duct assembly 2 and the shell 1. The ends of the two upper air ducts 2701 away from the upper fan chamber 30 are both connected to the upper air port 11, and the upper air duct 2701 is connected to the shell channel 15 when the upper wind shielding component 22 opens the upper air guide 213. The ends of the two lower air ducts 2901 away from the lower fan chamber 31 are both connected to the lower air port 13, and the lower air duct 2901 is connected to the shell channel 15 when the lower wind shielding component 23 opens the lower air guide 214, and the air inlet 14 is connected to the shell channel 15. The heat exchanger assembly 7 is arranged in the shell channel 15, and is used to perform heat exchange on the airflow passing through the shell channel 15. The airflow after heat exchange by the heat exchanger assembly 7 enters the upper fan chamber 30 and the lower fan chamber 31 through the upper centrifugal fan 5 and the lower centrifugal fan 6. The cabinet air conditioner indoor unit further includes a filter 8 , which is disposed in the housing 1 and is used to filter the airflow entering the housing channel 15 from the air inlet 14 .

[0057] In one example, the air duct shell includes a first shell surface and a second shell surface arranged along the axial direction of the fan chamber, the first shell surface is the shell surface of the second air duct shell 202 away from the first air duct shell 201, and the second shell surface is the shell surface of the first air duct shell 201 away from the second air duct shell 202. The air duct shell is provided with a connecting passage penetrating the first shell surface and the second shell surface, the first shell surface is provided with an air duct cover, and the heat exchanger assembly 7 is arranged close to the second shell surface of the air duct shell to reduce the thickness of the cabinet air conditioner indoor unit and reduce the indoor space occupied by the cabinet air conditioner indoor unit. It should be noted that in order to ensure that the airflow entering the shell channel 15 from the air inlet 14, the upper air duct 213, and the lower air duct 214 is first heat exchanged by the heat exchanger assembly 7 before being sucked into the upper centrifugal fan 5 and the lower centrifugal fan 6, the two upper air ducts 213 and the two lower air ducts 214 are both arranged on both sides of the width direction of the air duct shell, the first shell surface and the second shell surface are located on both sides of the thickness direction of the air duct shell, and the heat exchanger assembly 7 is sealed and connected to the second shell surface.

[0058] In other feasible embodiments, heat exchanger assemblies 7 are provided on both sides along the axial direction of the upper fan cavity 30 to achieve heat exchange of the airflow on both sides of the duct shell in the axial direction of the upper fan cavity 30. In this case, the duct shell does not need to be provided with a connecting channel.

[0059] In some embodiments, the cabinet air conditioner indoor unit has an upper air outlet mode and a lower air outlet mode; when the cabinet air conditioner indoor unit is in the upper air outlet mode, the upper wind shielding component 22 closes the corresponding upper air guide port 213 and connects the corresponding upper air duct 2701 with the passage of the upper fan chamber 30, the lower wind shielding component 23 opens the corresponding lower air guide port 214 and disconnects the passage of the corresponding lower air duct 2901 with the lower fan chamber 31, the upper volute tongue movement mechanism 25 is in the first position, and the lower volute tongue movement mechanism 26 is in the third position. When the cabinet air conditioner indoor unit is in the lower air outlet mode, the upper wind shielding component 22 opens the corresponding upper air guide port 213 and disconnects the passage of the corresponding upper air duct 2701 with the upper fan chamber 30, the lower wind shielding component 23 closes the corresponding lower air guide port 214 and connects the passage of the corresponding lower air duct 2901 with the lower fan chamber 31, the upper volute tongue movement mechanism 25 is in the second position, and the lower volute tongue movement mechanism 26 is in the fourth position.

[0060] Specifically, in order to realize the shower-style air supply function with the lower air outlet 13 for air intake and the upper air outlet 11 for air discharge, Figure 4 , Figure 5 and Figure 8As shown, at this time, the two upper wind shielding components 22 close the two upper air guides 213, and the passage between the first upper air duct and the second upper air duct and the upper fan chamber 30 is connected, thereby realizing the upper air outlet function. The two lower wind shielding components 23 open the two lower air guides 214, and the passage between the first lower air duct and the second lower air duct and the lower fan chamber 31 is disconnected, thereby realizing the lower air intake function. The upper volute tongue motion mechanism 25 rotates to the first position, and the wind blown out after the upper centrifugal fan 5 is started is blown out through the first upper air duct and the second upper air duct. The lower volute tongue motion mechanism 26 rotates to the third position, and the wind blown out after the lower centrifugal fan 6 is started is blown upward through the first auxiliary air outlet channel and the second upper air duct. And the wind blown out by the first upper air duct and the second upper air duct is blown out after being collected at the upper air outlet 11, refer to Figure 4 , Figure 5 and Figure 8 The red arrow in the middle shows the airflow path diagram. This air outlet method is suitable for cooling mode.

[0061] To achieve the carpet-style air supply function of the lower air outlet 13 for air inlet and the upper air outlet 11 for air outlet, as Figure 6 , Figure 7 and Figure 8 As shown, at this time, the two lower wind shielding components 23 close the two lower air guide ports 214, and the passage between the first lower air duct and the second lower air duct and the lower fan chamber 31 is connected, thereby realizing the lower air outlet function. The two upper wind shielding components 22 open the two upper air guide ports 213, and the passage between the first upper air duct and the second upper air duct and the upper fan chamber 30 is disconnected, thereby realizing the upper air intake function. The upper volute tongue motion mechanism 25 rotates to the second position, and the wind blown out after the upper centrifugal fan 5 is started is blown downward through the second auxiliary air duct and the second lower air duct. The lower volute tongue motion mechanism 26 rotates to the fourth position, and the wind blown out after the lower centrifugal fan 6 is started is blown out through the first lower air duct and the second lower air duct. And the wind blown out by the first lower air duct and the second lower air duct is blown out after being gathered at the lower air outlet 13, refer to Figure 6 , Figure 7 and Figure 8 The red arrow in the middle shows the airflow path diagram. This air outlet method is suitable for heating mode.

[0062] According to an exemplary embodiment, this embodiment proposes a control method for a cabinet air conditioner indoor unit. The control method is applied to any cabinet air conditioner indoor unit proposed in the above embodiments. The control method includes:

[0063] Get the operation mode of the indoor unit of the cabinet air conditioner;

[0064] When the cabinet air conditioner indoor unit is in cooling mode, the upper wind shielding component 22 is controlled to close the corresponding upper air guide 213, and all the lower wind shielding components 23 are controlled to open the corresponding lower air guide 214, the upper volute tongue movement mechanism 25 is controlled to be in the first position, the lower volute tongue movement mechanism 26 is controlled to be in the third position, and the upper centrifugal fan 5 and the lower centrifugal fan 6 are controlled to start;

[0065] When the indoor unit of the cabinet air conditioner is in heating mode, all upper wind shield components 22 are controlled to open the corresponding upper air duct 213, and the lower wind shield components 23 are controlled to close the corresponding lower air duct 214. The upper volute tongue movement mechanism 25 is controlled to be in the second position, and the lower volute tongue movement mechanism 26 is controlled to be in the fourth position. The upper centrifugal fan 5 and the lower centrifugal fan 6 are controlled to start.

[0066] The above control method has been described in detail in the embodiment of the cabinet air conditioner indoor unit, and will not be repeated here.

[0067] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention.

[0068] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An air duct assembly, characterized in that: The air duct assembly (2) comprises: An air duct shell, the air duct shell comprising an upper air duct (27), an upper fan cavity (30), an intermediate air duct (28), a lower fan cavity (31) and a lower air duct (29) arranged in sequence from top to bottom, wherein the upper air duct (27) comprises two upper air ducts (2701), one end of each of the two upper air ducts (2701) is connected to the upper fan cavity (30), an upper air guide port (213) is provided on the air duct wall of each of the upper air ducts (2701), and the lower air duct (29) is provided with a plurality of air guide ports (213) and a plurality of air guide ports (214) on the upper fan cavity (30). 9) comprising two lower air ducts (2901), one end of each of the two lower air ducts (2901) being connected to the lower fan cavity (31), the air duct wall of each of the lower air ducts (2901) being provided with a lower air guide port (214), the middle air duct (28) comprising two auxiliary air ducts (2801), the two ends of each of the two auxiliary air ducts (2801) being connected to the upper fan cavity (30) and the lower fan cavity (31), and the two auxiliary air ducts (2801) being arranged crosswise; an upper centrifugal fan (5) and a lower centrifugal fan (6), wherein the upper centrifugal fan (5) is arranged in the upper fan cavity (30), and the lower centrifugal fan (6) is arranged in the lower fan cavity (31), the upper centrifugal fan (5) has upper air inlet ends at two axial ends, and the lower centrifugal fan (6) has lower air inlet ends at two axial ends; Two upper wind shield components (22) and two lower wind shield components (23), the two upper wind shield components (22) being arranged in a one-to-one correspondence with the upper air guide ports (213) of the two upper air ducts (2701), the two lower wind shield components (23) being arranged in a one-to-one correspondence with the lower air guide ports (214) of the two lower air ducts (2901), the upper wind shield components (22) being designed to block the upper air duct (2701) from contact with the lower air ducts (2901) while opening the upper air guide ports (213). The lower wind shielding component (23) is designed to block the connection between the lower air duct (2901) and the lower fan cavity (31) while opening the lower air duct (214), or to connect the lower air duct (2901) to the lower fan cavity (31) while closing the lower air duct (214); An upper volute tongue motion mechanism (25) and a lower volute tongue motion mechanism (26), wherein the upper volute tongue motion mechanism (25) is arranged in the upper fan chamber (30), and the lower volute tongue motion mechanism (26) is arranged in the lower fan chamber (31), and the upper volute tongue motion mechanism (25) can be driven to move to a first position or a second position. When the upper volute tongue motion mechanism (25) moves to the first position, the upper centrifugal fan (5) discharges air upward through the two upper air ducts (2701). When the upper volute tongue motion mechanism (25) moves to the second position, the upper centrifugal fan (5) discharges air upward through the two upper air ducts (2701). When the upper centrifugal fan (5) is in the second position, the upper centrifugal fan (5) discharges air downwards through one of the auxiliary air ducts (2801), and the lower volute tongue movement mechanism (26) can be driven to move to the third position or the fourth position. When the lower volute tongue movement mechanism (26) is driven to move to the third position, the lower centrifugal fan (6) discharges air upwards through another of the auxiliary air ducts (2801), and when the lower volute tongue movement mechanism (26) is driven to move to the fourth position, the lower centrifugal fan (6) discharges air downwards through the two lower air ducts (2901).

2. The air duct assembly according to claim 1, characterized in that: The two auxiliary air ducts (2801) are arranged along the axial direction of the upper centrifugal fan (5); the air duct wall of one of the two auxiliary air ducts (2801) is provided with a first groove (2802); the air duct wall of the other of the two auxiliary air ducts (2801) is provided with a second groove (2803); the first groove (2802) and the second groove (2803) are arranged opposite to each other, and the first groove (2802) and the second groove (2803) are snap-fitted.

3. The air duct assembly according to claim 1, characterized in that: The air duct shell is provided with at least one communication channel, and the communication channel penetrates the air duct shell along the axial direction of the upper fan cavity (30).

4. The air duct assembly according to claim 3, characterized in that: The connecting passage is located between the two upper air ducts (2701) and / or between the two lower air ducts (2901).

5. The air duct assembly according to claim 3, characterized in that: The air duct shell comprises a first shell wall (203) and a second shell wall (204) arranged along its width direction, and the connecting passage is located between the first shell wall (203) and the two auxiliary air ducts (2801), and / or between the second shell wall (204) and the two auxiliary air ducts (2801).

6. The air duct assembly according to any one of claims 3 to 5, characterized in that: The air duct shell comprises a first shell surface and a second shell surface arranged along the axial direction of the upper centrifugal fan (5); the air duct assembly (2) comprises a sealing cover (24); the sealing cover (24) is arranged on the first shell surface and forms a ventilation cavity with the first shell surface; the connecting channel, the upper centrifugal fan (5) and the lower centrifugal fan (6) are located in the ventilation cavity at one end away from the second shell surface; the connecting channel connects the ventilation cavity with a space located on one side of the second shell surface.

7. The air duct assembly according to claim 1, characterized in that: The air duct assembly (2) comprises an upper ventilation frame (3) and a lower ventilation frame (4); one end of the two upper air ducts (2701) away from the upper fan cavity (30) is connected to the upper ventilation frame (3); and one end of the two lower air ducts (2901) away from the lower fan cavity (31) is connected to the lower ventilation frame (4).

8. A cabinet-type air conditioner indoor unit, characterized in that: The cabinet type air conditioner indoor unit comprises: A shell (1), wherein an upper air outlet (11) is provided at an upper portion of the shell (1), a lower air outlet (13) is provided at a lower portion of the shell (1), and the shell (1) is further provided with an air inlet (14); The air duct assembly according to any one of claims 1 to 7 is arranged in the shell (1), a shell channel (15) is formed between the air duct assembly (2) and the shell (1), one end of the two upper air ducts (2701) away from the upper fan chamber (30) is communicated with the upper air port (11), and the upper air duct (2701) is communicated with the shell channel (15) when the upper wind shielding component (22) opens the upper air guide port (213), one end of the lower air duct (2901) away from the lower fan chamber (31) is communicated with the lower air port (13), and the lower air duct (2901) is communicated with the shell channel (15) when the lower wind shielding component (23) opens the lower air guide port (214), and the air inlet (14) is communicated with the shell channel (15); A heat exchanger assembly (7) is arranged in the shell channel (15) and is used to perform heat exchange on the airflow flowing through the shell channel (15); the airflow after heat exchange by the heat exchanger assembly (7) is sucked into the upper fan chamber (30) and the lower fan chamber (31) through the upper centrifugal fan (5) and the lower centrifugal fan (6).

9. The cabinet type air conditioner indoor unit according to claim 8, characterized in that: The cabinet-type air conditioner indoor unit has an upper air outlet mode and a lower air outlet mode; When the cabinet air conditioner indoor unit is in the upper air outlet mode, the upper wind shielding component (22) closes the corresponding upper air guide port (213) and connects the corresponding upper air duct (2701) with the passage of the upper fan chamber (30), the lower wind shielding component (23) opens the corresponding lower air guide port (214) and disconnects the corresponding lower air duct (2901) from the passage of the lower fan chamber (31), the upper volute tongue movement mechanism (25) is in the first position, and the lower volute tongue movement mechanism (26) is in the third position; When the cabinet air conditioner indoor unit is in the downward air outlet mode, the upper wind shield component (22) opens the corresponding upper air guide port (213) and disconnects the passage between the corresponding upper air duct (2701) and the upper fan chamber (30), the lower wind shield component (23) closes the corresponding lower air guide port (214) and connects the passage between the corresponding lower air duct (2901) and the lower fan chamber (31), the upper volute tongue movement mechanism (25) is in the second position, and the lower volute tongue movement mechanism (26) is in the fourth position.

10. A control method for a cabinet air conditioner indoor unit, characterized in that: The control method is applied to the cabinet air conditioner indoor unit according to claim 8 or 9, and the control method comprises: Get the operation mode of the indoor unit of the cabinet air conditioner; When the indoor unit of the cabinet air conditioner is in cooling mode, the upper wind shield component (22) is controlled to close the corresponding upper air guide port (213), and all the lower wind shield components (23) are controlled to open the corresponding lower air guide port (214), the upper volute tongue movement mechanism (25) is controlled to be in the first position, and the lower volute tongue movement mechanism (26) is controlled to be in the third position, and the upper centrifugal fan (5) and the lower centrifugal fan (6) are controlled to start; When the indoor unit of the cabinet air conditioner is in heating mode, all upper wind shield components (22) are controlled to open the corresponding upper air guide ports (213), and the lower wind shield components (23) are controlled to close the corresponding lower air guide ports (214), the upper volute tongue movement mechanism (25) is controlled to be in the second position, and the lower volute tongue movement mechanism (26) is controlled to be in the fourth position, and the upper centrifugal fan (5) and the lower centrifugal fan (6) are controlled to start.

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