Cabinet type air conditioner indoor unit, air conditioner and control method

Abstract

The invention relates to a cabinet type air conditioner indoor unit, an air conditioner and a control method, the cabinet type air conditioner indoor unit comprises a shell, an air duct component, a heat exchange assembly and an air door assembly, an upper air opening is formed in the upper portion of the shell, and a lower air opening is formed in the lower portion of the shell; the air duct assembly comprises an upper air duct part, a lower air duct part, an upper centrifugal fan and a lower centrifugal fan, the upper air duct part comprises an upper air duct and an upper fan cavity which are communicated, and the lower air duct part comprises a lower air duct and a lower fan cavity which are communicated; the heat exchange assembly comprises an upper heat exchange part and a lower heat exchange part, an upper heat exchange cavity is defined by the upper heat exchange part and the shell, the upper air duct part is arranged in the upper heat exchange cavity, a lower heat exchange cavity is defined by the lower heat exchange part and the shell, and the lower air duct part is arranged in the lower heat exchange cavity; the air door assembly is used for blocking air flow channels between the upper heat exchange cavity and the lower heat exchange component and between the lower heat exchange cavity and the upper heat exchange component. The vertical temperature difference in a room is reduced, the temperature distribution of indoor air is uniform, airflow short circuit is avoided, and the comfort of the air is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a floor-standing air conditioner indoor unit, an air conditioner and a control method. Background Art

[0002] When a floor-standing air conditioner is operating, due to the difference in air density, there is an uneven temperature stratification in the height direction of the floor-standing air conditioner indoor unit, resulting in a large vertical temperature difference in the room where the floor-standing air conditioner indoor unit is located, thereby affecting the air comfort. The position of the air inlet, the position of the air outlet and the air flow path are the key factors affecting the vertical temperature. In the related art, the housing of the floor-standing air conditioner indoor unit is provided with an upper air outlet, a lower air outlet and an air inlet; by blowing air through the upper air outlet, shower cooling can be achieved, and by blowing air through the lower air outlet, carpet heating can be achieved. However, the positions of the air inlet, the upper air outlet and the lower air outlet are fixed, and the air inlet is often arranged on the back side or the left and right sides of the air conditioner, affecting the overall aesthetics. Summary of the Invention

[0003] To overcome the problems in the related art that the positions of the air inlet, the upper air outlet and the lower air outlet are fixed, and the air inlet is arranged on the back side or the left and right sides of the air conditioner, affecting the overall aesthetics, a first aspect of the present invention provides a floor-standing air conditioner indoor unit, and the floor-standing air conditioner indoor unit includes:

[0004] A housing, an upper air outlet is provided on the upper part of the housing, and a lower air outlet is provided on the lower part of the housing;

[0005] An air duct assembly, arranged inside the housing, the air duct assembly includes an upper air duct component, a lower air duct component, an upper centrifugal fan and a lower centrifugal fan, the upper air duct component includes a connected upper air duct and an upper fan cavity, the upper air duct is communicated with the upper air outlet, the upper centrifugal fan is arranged in the upper fan cavity, the lower air duct component includes a connected lower air duct and a lower fan cavity, the lower air duct is communicated with the lower air outlet, and the lower centrifugal fan is arranged in the lower fan cavity;

[0006] A heat exchange assembly, arranged inside the housing, the heat exchange assembly includes an upper heat exchange component and a lower heat exchange component, an upper heat exchange cavity is defined between the upper heat exchange component and the housing, the upper air duct component is arranged in the upper heat exchange cavity, a lower heat exchange cavity is defined between the lower heat exchange component and the housing, and the lower air duct component is arranged in the lower heat exchange cavity;

[0007] A damper assembly, arranged inside the housing and located between the upper heat exchange cavity and the lower heat exchange cavity, the damper assembly can block the air flow path between the upper heat exchange cavity and the lower heat exchange component when the floor-standing air conditioner indoor unit operates in the heating mode, and block the air flow path between the lower heat exchange cavity and the upper heat exchange component when the floor-standing air conditioner indoor unit operates in the cooling mode.

[0008] In some embodiments, the upper air duct component and the lower air duct component are arranged vertically offset, and the upper heat exchange component is arranged on one side of the upper air duct component close to the lower air duct component, and the lower heat exchange component is arranged on one side of the lower air duct component close to the upper air duct component.

[0009] In some embodiments, the upper heat exchange component is inclined downward from top to bottom in a direction close to the upper air duct component, and the lower heat exchange component is inclined downward from top to bottom in a direction away from the lower air duct component.

[0010] In some embodiments, the air door assembly includes:

[0011] A support frame arranged between the upper heat exchange component and the lower heat exchange component;

[0012] A moving mechanism including a rack, a gear and a driving motor. The rack is arranged on the support frame and can move relative to the support frame. The gear is arranged at a position corresponding to the rack. The rack meshes with the gear. The driving motor is connected to the gear and used to drive the gear to rotate. The rotation of the gear drives the rack to move. The moving positions of the rack include a first position and a second position. When the rack moves to the first position, the rack blocks the air flow path between the upper heat exchange cavity and the lower heat exchange component. When the rack moves to the second position, the rack blocks the air flow path between the lower heat exchange cavity and the upper heat exchange component.

[0013] In some embodiments, the housing includes a front side plate. The upper air outlet is arranged on the upper side of the front side plate, and the lower air outlet is arranged on the lower side of the front side plate.

[0014] In some embodiments, the upper air outlet includes a first air outlet and a second air outlet. The first air outlet is communicated with the upper air duct, and the second air outlet is communicated with the upper heat exchange cavity;

[0015] The lower air outlet includes a third air outlet and a fourth air outlet. The third air outlet is communicated with the lower air duct, and the fourth air outlet is communicated with the lower heat exchange cavity.

[0016] In some embodiments, the cabinet-type air conditioner indoor unit includes an upper air deflector and a lower air deflector. The upper air deflector is arranged at the second air outlet and used to open and close the second air outlet. The lower air deflector is arranged at the fourth air outlet and used to open and close the fourth air outlet.

[0017] In some embodiments, the cabinet-type air conditioner indoor unit further includes an upper axial flow fan and a lower axial flow fan. The upper axial flow fan is disposed at a position in the upper heat exchange chamber opposite to the second air outlet, and the lower axial flow fan is disposed at a position in the lower heat exchange chamber opposite to the fourth air outlet.

[0018] In a second aspect of the present invention, an air conditioner is provided, which includes any one of the cabinet-type air conditioner indoor units proposed in the first aspect of the present invention.

[0019] In a third aspect of the present invention, a control method for an air conditioner is provided. The control method is used to control the air conditioner proposed in the second aspect of the present invention, and the control method includes:

[0020] Obtain the operating mode of the air conditioner;

[0021] Control the damper assembly to be in a position state corresponding to the operating mode, and control the upper centrifugal fan and the lower centrifugal fan to be in a starting state corresponding to the operating mode.

[0022] In some embodiments, the controlling the damper assembly to be in a position state corresponding to the operating mode, and controlling the upper centrifugal fan and the lower centrifugal fan to be in a starting state corresponding to the operating mode includes:

[0023] In the cooling mode, control the damper assembly to block the air flow path between the lower heat exchange chamber and the upper heat exchange component, control the upper centrifugal fan to start, and the lower centrifugal fan to be in a stopped state;

[0024] In the heating mode, control the damper assembly to block the air flow path between the upper heat exchange chamber and the lower heat exchange component, control the lower centrifugal fan to start, and the upper centrifugal fan to be in a stopped state.

[0025] In some embodiments, the control method further includes

[0026] Control the second air outlet and the fourth air outlet of the cabinet-type air conditioner indoor unit to be in an open / closed state corresponding to the operating mode, and control the upper axial flow fan and the lower axial flow fan of the cabinet-type air conditioner indoor unit to be in a starting state corresponding to the operating mode.

[0027] In some embodiments, the controlling the second air outlet and the fourth air outlet of the cabinet-type air conditioner indoor unit to be in an open / closed state corresponding to the operating mode, and controlling the upper axial flow fan and the lower axial flow fan of the cabinet-type air conditioner indoor unit to be in a starting state corresponding to the operating mode includes:

[0028] In the cooling mode, control the second air outlet to be in the closed state, the fourth air outlet to be in the open state, control the upper axial-flow fan to be turned off, and the lower axial-flow fan to be started;

[0029] In the heating mode, control the fourth air outlet to be in the closed state, the second air outlet to be in the open state, control the upper axial-flow fan to be started, and the lower axial-flow fan to be turned off.

[0030] The technical solution of the present invention may include the following beneficial effects: The present invention optimizes the positions of the upper air outlet and the lower air outlet, increases the distance between the upper air outlet and the lower air outlet, makes full use of the principle that cold air sinks during cooling and hot air rises during heating, expands the airflow range, forms a large swirling eddy current in the room where the indoor unit is located, reduces the vertical temperature difference in the room, makes the temperature distribution of the indoor air uniform, avoids air flow short circuit, and improves the comfort of the air. At the same time, the present invention cancels the air inlets on the rear side panel or the left and right side panels, ensuring the consistency of the appearance of the cabinet-type air conditioner indoor unit and enhancing the overall aesthetics.

[0031] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Brief Description of the Drawings

[0032] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0033] Figure 1 is a schematic diagram of a cabinet-type air conditioner indoor unit shown according to an exemplary embodiment.

[0034] Figure 2 is an internal structure diagram of a cabinet-type air conditioner indoor unit shown according to an exemplary embodiment.

[0035] Figure 3 is Figure 2 an enlarged view of part A in

[0036] Figure 4 is an air flow path diagram of a cabinet-type air conditioner indoor unit in the cooling mode shown according to an exemplary embodiment.

[0037] Figure 5 is an air flow path diagram of a cabinet-type air conditioner indoor unit in the heating mode shown according to an exemplary embodiment.

[0038] Figure 6 is a control flow chart of an air conditioner shown according to an exemplary embodiment.

[0039] 1. Housing; 11. Front side plate; 12. Upper air inlet; 121. First air inlet; 122. Second air inlet; 13. Lower air inlet; 131. Third air inlet; 132. Fourth air inlet; 14. Upper heat exchange chamber; 15. Lower heat exchange chamber; 21. Upper air duct component; 211. Upper air duct; 212. Upper fan chamber; 22. Lower air duct component; 221. Lower air duct; 222. Lower fan chamber; 23. Upper centrifugal fan; 24. Lower centrifugal fan; 3. Upper axial flow fan; 4. Lower axial flow fan; 5. Damper assembly; 51. Support frame; 52. Rack; 53. Gear; 54. Driving motor; 6. Heat exchange assembly; 61. Upper heat exchange component; 62. Lower heat exchange component; 7. Upper air deflector; 8. Lower air deflector; 101. First position; 102. Second position. Detailed implementation manners

[0040] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0041] The following elaborates on this implementation manner in detail with reference to the drawings. In the case of no conflict, the following implementation manners and examples can be combined with each other.

[0042] According to an exemplary embodiment, this embodiment provides a cabinet-type air conditioner indoor unit. As Figure 1 and Figure 2 shown, the cabinet-type air conditioner indoor unit includes: a housing 1, an air duct assembly, a heat exchange assembly 6, and a damper assembly 5. Among them, an upper air inlet 12 is provided at the upper part of the housing 1, and a lower air inlet 13 is provided at the lower part of the housing 1. In one example, the housing 1 includes a top plate, a front side plate 11, a rear side plate, a left side plate, a right side plate, and a bottom plate. Among them, the sides of the front side plate 11, the rear side plate, the left side plate, and the right side plate are connected to each other in pairs, and the two ends of the front side plate 11, the rear side plate, the left side plate, and the right side plate in the height direction are respectively connected to the top plate and the bottom plate. The top plate, the front side plate 11, the rear side plate, the left side plate, the right side plate, and the bottom plate enclose a chamber. The upper air inlet 12 can be provided on the top plate, or on the upper part of one of the front side plate 11, the left side plate, and the right side plate. The lower air inlet 13 can be provided on the bottom plate, or on the lower part of one of the front side plate 11, the left side plate, and the right side plate, or located on the bottom plate. Exemplarily, referring to Figure 1 and Figure 2, the upper air inlet 12 is arranged on the upper side of the front side plate 11, and the lower air inlet 13 is arranged on the lower side of the front side plate 11. The upper air inlet 12 and the lower air inlet 13 in this embodiment can intake air or exhaust air. When one of the upper air inlet 12 and the lower air inlet 13 intakes air as an air inlet, the other will exhaust air as an air outlet, so that the upper air outlet mode and the lower air outlet mode can be realized. At the same time, the air inlets on the rear side plate or the left and right side plates are cancelled to ensure the consistency of the appearance of the cabinet-type air conditioner indoor unit and improve the overall aesthetics.

[0043] The air duct assembly is arranged inside the housing 1. The air duct assembly includes an upper air duct component 21, a lower air duct component 22, an upper centrifugal fan 23 and a lower centrifugal fan 24. The upper air duct component 21 includes a connected upper air duct 211 and an upper fan cavity 212. The upper air duct 211 is communicated with the upper air inlet 12, and the upper centrifugal fan 23 is arranged in the upper fan cavity 212. The lower air duct component 22 includes a connected lower air duct 221 and a lower fan cavity 222. The lower air duct 221 is communicated with the lower air inlet 13, and the lower centrifugal fan 24 is arranged in the lower fan cavity 222. The heat exchange assembly 6 is arranged inside the housing 1. The heat exchange assembly 6 includes an upper heat exchange component 61 and a lower heat exchange component 62. An upper heat exchange cavity 14 is defined between the upper heat exchange component 61 and the housing 1, and the upper air duct component 21 is arranged in the upper heat exchange cavity 14. A lower heat exchange cavity 15 is defined between the lower heat exchange component 62 and the housing 1, and the lower air duct component 22 is arranged in the lower heat exchange cavity 15. The air door assembly 5 is arranged inside the housing 1 and is located between the upper heat exchange cavity 14 and the lower heat exchange cavity 15. The air door assembly 5 can block the air flow path between the upper heat exchange cavity 14 and the lower heat exchange component 62 when the cabinet-type air conditioner indoor unit operates in the heating mode, and block the air flow path between the lower heat exchange cavity 15 and the upper heat exchange component 61 when the cabinet-type air conditioner indoor unit operates in the cooling mode. In this embodiment, guide rings (not shown in the figure) are arranged on both sides of the upper centrifugal fan 23 and the lower centrifugal fan 24. The air flow after being heat exchanged by the upper heat exchange component 61 can enter the lower air duct 221 through both sides of the lower centrifugal fan 24, and the air flow after being heat exchanged by the lower heat exchange component 62 can enter the upper air duct 211 through both sides of the upper centrifugal fan 23.

[0044] Specifically, the air conditioner indoor unit in this embodiment has an upper air outlet mode and a lower air outlet mode.

[0045] When the cabinet-type air conditioner indoor unit is in the upper air outlet mode, as Figure 4 shown, the air door assembly 5 blocks the air flow path between the lower heat exchange cavity 15 and the upper heat exchange component 61. At this time, the upper air inlet 12 serves as an air outlet, and the lower air inlet 13 serves as an air inlet. The air at the lower air inlet 13 enters the lower heat exchange cavity 15 under the action of the upper centrifugal fan 23. The air flow in the lower heat exchange cavity 15 exchanges heat with the lower heat exchange component 62 and then enters the upper heat exchange cavity 14. The air flow in the upper heat exchange cavity 14 is discharged from the upper air inlet 12 through the upper air duct 211. The air flow direction refers to Figure 4The direction indicated by the arrow. In this air outlet mode, the floor-standing air conditioner indoor unit can operate in the cooling mode.

[0046] When the floor-standing air conditioner indoor unit is in the lower air outlet mode, as Figure 5 shown, the air door assembly 5 blocks the air flow path between the upper heat exchange chamber 14 and the lower heat exchange component 62. At this time, the lower air outlet 13 serves as the air outlet, and the upper air inlet 12 serves as the air inlet. The air at the upper air inlet 12 enters the upper heat exchange chamber 14 under the action of the lower centrifugal fan 24. The air flow in the upper heat exchange chamber 14 exchanges heat with the upper heat exchange component 61 and then enters the lower heat exchange chamber 15. The air flow in the lower heat exchange chamber 15 is discharged from the lower air outlet 13 through the lower air duct 221. The air flow direction refers to the direction indicated by the arrow in Figure 5 In this air outlet mode, the floor-standing air conditioner indoor unit can operate in the heating mode.

[0047] In this embodiment, the positions of the upper air inlet 12 and the lower air outlet 13 are optimized, the distance between the upper air inlet 12 and the lower air outlet 13 is increased, and the principle that cold air sinks during cooling and hot air rises during heating is fully utilized, expanding the air flow range, forming a large swirling eddy current in the room where the indoor unit is located, reducing the vertical temperature difference in the room, making the temperature distribution of the indoor air uniform, avoiding air flow short circuit, and improving the comfort of the indoor environment. At the same time, the present invention cancels the air inlets on the rear side plate or the left and right side plates, ensuring the consistency of the appearance of the floor-standing air conditioner indoor unit and enhancing the overall aesthetics.

[0048] In some embodiments, as Figure 2 shown, the upper air duct component 21 and the lower air duct component 22 are arranged in an up-and-down offset manner. The upper air duct component 21 and the lower air duct component 22 are arranged in an up-and-down offset manner, and the upper heat exchange component 61 is arranged on the side of the upper air duct component 21 close to the lower air duct component 22, and the lower heat exchange component 62 is arranged on the side of the lower air duct component 22 close to the upper air duct component 21. In this embodiment, the upper space and the lower space of the air conditioner indoor unit are reasonably arranged to realize heat exchange through different heat exchange components in different air outlet modes.

[0049] In some embodiments, as Figure 2 shown, the upper heat exchange component 61 is inclined downward from top to bottom in the direction close to the upper air duct component 21, and the lower heat exchange component 62 is inclined downward from top to bottom in the direction away from the lower air duct component 22. Exemplarily, both the upper heat exchange component 61 and the lower heat exchange component 62 are flat-plate heat exchange components. In this embodiment, both the upper air duct component 21 and the lower heat exchange component 62 are inclined, increasing the heat exchange area between the upper heat exchange component 61 and the lower heat exchange component 62, thereby improving the cooling or heating effect.

[0050] In some embodiments, as Figure 2As shown, the air damper assembly 5 includes a support frame 51 and a moving mechanism. The support frame 51 is disposed between the upper heat exchange component 61 and the lower heat exchange component 62. The moving mechanism includes a rack 52, a gear 53, and a drive motor 54. The rack 52 is disposed on the support frame 51 and is capable of moving relative to the support frame 51. The gear 53 is disposed at a position corresponding to the rack 52. The rack 52 meshes with the gear 53. The drive motor 54 is connected to the gear 53 and is used to drive the gear 53 to rotate. The rotation of the gear 53 drives the rack 52 to move. The moving positions of the rack 52 include a first position 101 and a second position 102. When the rack 52 moves to the first position 101, the rack 52 blocks the air flow path between the upper heat exchange chamber 14 and the lower heat exchange component 62. When the rack 52 moves to the second position 102, the rack 52 blocks the air flow path between the lower heat exchange chamber 15 and the upper heat exchange component 61.

[0051] In one example, referring to Figure 2 and Figure 3 , a channel for the rack 52 to move is provided on the support frame 51. The drive motor 54 drives the gear 53 to rotate, and the rotation of the gear 53 drives the rack 52 to perform a linear motion, so that one end of the rack 52 is sealed with the inner wall surface of the housing 1 to switch the operation of different heat exchange components. The upper heat exchange chamber 14 is located in the upper left part of the inner cavity of the housing 1. The upper air duct component 21 is located in the upper heat exchange chamber 14. The lower heat exchange chamber 15 is located in the lower right part of the inner cavity of the housing 1. The lower air duct component 22 is located in the lower heat exchange chamber 15. The upper heat exchange component 61 is located in the upper right part of the inner cavity of the housing 1. The lower heat exchange component 62 is located in the lower left part of the inner cavity of the housing 1. The first position 101 is located at a position opposite to the rack 52 on the left side of the housing 1. The second position 102 is located at a position opposite to the rack 52 on the right side of the housing 1.

[0052] In other realizable ways, the air damper assembly 5 includes a first baffle and a second baffle. Both the first baffle and the second baffle are hinged between the lower heat exchange component 62, and the first baffle and the second baffle are located on the left and right sides of the upper heat exchange component 61 (or the lower heat exchange component 62). The first baffle is used to open and close the air flow path between the upper heat exchange chamber 14 and the lower heat exchange component 62. The second baffle is used to open and close the air flow path between the lower heat exchange chamber 15 and the upper heat exchange component 61.

[0053] In order to prevent air from flowing between the upper heat exchange component 61 and the inner wall surface of the housing 1, between the lower heat exchange component 62 and the inner wall surface of the housing 1, between the upper heat exchange component 61 and the support frame 51, and between the lower heat exchange component 62 and the support frame 51 in the upper heat exchange chamber 14 and the lower heat exchange chamber 15, in a preferred embodiment, referring to Figure 2 , the upper end of the upper heat exchange component 61 is fixedly sealed with the inner wall surface of the housing 1, the lower end is fixedly sealed with the support frame 51, and the upper end of the lower heat exchange component 62 is fixedly sealed with the support frame 51, and the lower end is supported and fixed with the inner wall surface of the housing 1.

[0054] In some embodiments, such as Figure 2 shown, the upper air inlet 12 includes a first air inlet 121 and a second air inlet 122. The first air inlet 121 is communicated with the upper air duct 211, and the second air inlet 122 is communicated with the upper heat exchange chamber 14. The lower air inlet 13 includes a third air inlet 131 and a fourth air inlet 132. The third air inlet 131 is communicated with the lower air duct 221, and the fourth air inlet 132 is communicated with the lower heat exchange chamber 15. In the upper air outlet mode, the air flow entering through the third air inlet 131 enters the lower air duct 221 and enters the lower heat exchange chamber 15 from the lower air duct 221, and the air flow entering through the fourth air inlet 132 enters the lower heat exchange chamber 15. In the lower air outlet mode, the air flow entering through the first air inlet 121 enters the upper air duct 211 and enters the upper heat exchange chamber 14 from the upper air duct 211, and the air flow entering through the second air inlet 122 enters the upper heat exchange chamber 14. In this embodiment, by using the second air inlet 122 and the fourth air inlet 132 as the air inlets, the air intake volume is increased, and the temperature change speed of the indoor air is improved.

[0055] In a preferred embodiment, such as Figure 1 and Figure 2 shown, the first air inlet 121 and the second air inlet 122 are located at the same height position of the housing 1, and the third air inlet 131 and the fourth air inlet 132 are located at the same height position of the housing 1, or the first air inlet 121 and the second air inlet 122 are located at the same width position of the housing 1, and the third air inlet 131 and the fourth air inlet 132 are located at the same width position of the housing 1, so that the first air inlet 121 and the second air inlet 122 form an air inlet visually, and the third air inlet 131 and the fourth air inlet 132 form an air inlet. While increasing the air intake volume of the air inlet, the air inlets on the rear side plate or the left and right side plates are cancelled, ensuring the consistency in appearance and improving the aesthetics of the overall structure of the cabinet-type air conditioner indoor unit.

[0056] In some embodiments, such as Figure 2 shown, the cabinet-type air conditioner indoor unit includes an upper air deflector 7 and a lower air deflector 8. The upper air deflector 7 is arranged at the second air inlet 122 for opening and closing the second air inlet 122, and the lower air deflector 8 is arranged at the fourth air inlet 132 for opening and closing the fourth air inlet 132. In the upper air outlet mode, the upper air deflector 7 closes the second air inlet 122, and the lower air deflector 8 opens the fourth air inlet 132. In the lower air outlet mode, the upper air deflector 7 opens the second air inlet 122, and the lower air deflector 8 closes the fourth air inlet 132.

[0057] In some embodiments, such as Figure 2As shown in the figure, the cabinet-type air conditioner indoor unit further includes an upper axial flow fan 3 and a lower axial flow fan 4. The upper axial flow fan 3 is arranged at a position in the upper heat exchange chamber 14 opposite to the second air outlet 122, and the lower axial flow fan 4 is arranged at a position in the lower heat exchange chamber 15 opposite to the fourth air outlet 132. Both the upper axial flow fan 3 and the lower axial flow fan 4 include a motor and an axial flow impeller. In this embodiment, by respectively arranging the upper axial flow fan 3 and the lower axial flow fan 4 at the second air outlet 122 and the fourth air outlet 132, the air intake suction at the second air outlet 122 and the fourth air outlet 132 is increased, and the air intake volume is further increased.

[0058] According to an exemplary embodiment, this embodiment provides an air conditioner, which includes the cabinet-type air conditioner indoor unit proposed in any of the above embodiments. The air conditioner in this embodiment increases the air intake volume, improves the temperature change speed of the indoor air, reduces the vertical temperature difference in the room, makes the temperature distribution of the indoor air uniform, avoids air flow short circuit, improves the air comfort, and at the same time ensures the appearance consistency and enhances the aesthetics.

[0059] According to an exemplary embodiment, this embodiment provides a control method for an air conditioner, and the control method is used to control the air conditioner in the above embodiment. Figure 6 is a control flowchart of the air conditioner shown according to an exemplary embodiment of the present invention. Referring to Figure 6 , the control method includes:

[0060] S61. Obtain the operating mode of the air conditioner;

[0061] S62. Control the damper assembly 5 to be in a position state corresponding to the operating mode, and control the upper centrifugal fan 23 and the lower centrifugal fan 24 to be in a starting state corresponding to the operating mode.

[0062] In this embodiment, the operating modes of the air conditioner include a cooling mode and a heating mode. Among them, the cooling mode is a cooling mode with upper air outlet, and the heating mode is a heating mode with lower air outlet. Since the positions of the damper assembly 5 and the starting states of the upper centrifugal fan 23 and the lower centrifugal fan 24 are different under different operating modes, after the air conditioner starts to operate, after obtaining the control instruction of the operating mode issued by the user, the position state of the damper assembly 5 and the starting states of the upper centrifugal fan 23 and the lower centrifugal fan 24 will be determined according to the control instruction of the operating mode.

[0063] In some embodiments, controlling the damper assembly 5 to be in a position state corresponding to the operating mode and controlling the upper centrifugal fan 23 and the lower centrifugal fan 24 to be in a starting state corresponding to the operating mode includes:

[0064] In the cooling mode, the control damper assembly 5 blocks the air flow path between the lower heat exchange chamber 15 and the upper heat exchange component 61, and controls the upper centrifugal fan 23 to start and the lower centrifugal fan 24 to be in the shutdown state.

[0065] Specifically, when the air conditioner is in the cooling mode, the upper air outlet 12 serves as the air outlet, the lower air inlet 13 serves as the air inlet, the upper centrifugal fan 23 starts to operate, and the lower centrifugal fan 24 stops operating. The rack 52 moves to the second position 102. Under the action of the upper centrifugal fan 23, the air at the third air outlet 131 passes through the lower air duct 221 and enters the lower heat exchange chamber 15 from the left deflector ring of the lower centrifugal fan 24. The air at the fourth air outlet 132 directly enters the lower heat exchange chamber 15. All the air flows in the lower heat exchange chamber 15 pass through the lower heat exchange component 62 and then enter the upper centrifugal fan 23 axially from both sides of the deflector rings of the upper centrifugal fan 23. Under the action of the upper centrifugal fan 23, the air is finally blown out from the first air outlet 121, realizing the downward air inlet and upward air outlet during cooling. The air flow direction is as Figure 4 shown by the arrow in

[0066] In the heating mode, the control damper assembly 5 blocks the air flow path between the upper heat exchange chamber 14 and the lower heat exchange component 62, and controls the lower centrifugal fan 24 to start and the upper centrifugal fan 23 to be in the shutdown state.

[0067] Specifically, when the air conditioner is in the heating mode, the lower air inlet 13 serves as the air outlet, the upper air outlet 12 serves as the air inlet, the lower centrifugal fan 24 starts to operate, and the upper centrifugal fan 23 stops operating. The rack 52 moves to the first position 101. Under the action of the lower centrifugal fan 24, the air at the first air outlet 121 passes through the upper air duct 211 and enters the upper heat exchange chamber 14 from the right deflector ring of the upper centrifugal fan 23. The air at the second air outlet 122 directly enters the upper heat exchange chamber 14. All the air flows in the upper heat exchange chamber 14 pass through the upper heat exchange component 61 and then enter the lower centrifugal fan 24 axially from both sides of the deflector rings of the lower centrifugal fan 24. Under the action of the lower centrifugal fan 24, the air is finally blown out from the third air outlet 131, realizing the upward air inlet and downward air outlet during heating. The air flow direction is as Figure 5 shown by the arrow in

[0068] In some embodiments, the control method further includes controlling the second air outlet 122 of the cabinet-type air conditioner indoor unit and the fourth air outlet 132 of the cabinet-type air conditioner indoor unit to be in the open / closed state corresponding to the operating mode, and controlling the upper axial flow fan 3 and the lower axial flow fan 4 of the cabinet-type air conditioner indoor unit to be in the starting state corresponding to the operating mode.

[0069] In this embodiment, the opening and closing states of the second air outlet 122 and the fourth air outlet 132 are different in different operating modes. Similarly, the starting states of the upper axial-flow fan 3 and the lower axial-flow fan 4 are different in different operating modes. Therefore, after the air conditioner starts to operate, after obtaining the control instruction of the operating mode issued by the user, the opening and closing states of the second air outlet 122 and the fourth air outlet 132 will be controlled according to the control instruction of the operating mode, and the starting states of the upper axial-flow fan 3 and the lower axial-flow fan 4 will also be controlled.

[0070] In some embodiments, the second air outlet 122 of the cabinet-type air conditioner indoor unit and the fourth air outlet 132 of the cabinet-type air conditioner indoor unit are in the opening and closing states corresponding to the operating mode, and the upper axial-flow fan 3 and the lower axial-flow fan 4 of the cabinet-type air conditioner indoor unit are in the starting states corresponding to the operating mode, including:

[0071] In the cooling mode, control the second air outlet 122 to be in the closed state, the fourth air outlet 132 to be in the open state, control the upper axial-flow fan 3 to be closed, and the lower axial-flow fan 4 to be started. Under the action of the lower axial-flow fan 4, the air intake volume entering the lower heat exchange chamber 15 from the fourth air outlet 132 is increased. In the heating mode, control the fourth air outlet 132 to be in the closed state, the second air outlet 122 to be in the open state, control the upper axial-flow fan 3 to be started, and the lower axial-flow fan 4 to be closed. Under the action of the upper axial-flow fan 3, the air intake volume entering the upper heat exchange chamber 14 from the second air outlet 122 is increased.

[0072] In other implementable ways in real time, the rotation speed of the upper axial-flow fan 3 or the lower axial-flow fan 4 can also be adjusted according to the indoor environmental temperature. For example, in the cooling mode, when the indoor environmental temperature is greater than the first set temperature, the rotation speed of the lower axial-flow fan 4 is increased to increase the air intake volume of the fourth air outlet 132, thereby improving the cooling effect. In the heating mode, when the indoor environmental temperature is less than the second set temperature, the rotation speed of the upper axial-flow fan 3 is increased to increase the air intake volume of the second air outlet 122, thereby improving the heating effect.

[0073] Those skilled in the art will readily conceive of 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 disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0074] It should be understood that the present invention is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A cabinet-type air conditioner indoor unit, characterized in that, The cabinet-type air conditioner indoor unit includes: A housing, with an upper air inlet provided at the upper part of the housing and a lower air outlet provided at the lower part of the housing; An air duct assembly disposed inside the housing. The air duct assembly includes an upper air duct component, a lower air duct component, an upper centrifugal fan, and a lower centrifugal fan. The upper air duct component includes an upper air duct and an upper fan chamber that are connected and communicated. The upper air duct is communicated with the upper air inlet, and the upper centrifugal fan is disposed in the upper fan chamber. The lower air duct component includes a lower air duct and a lower fan chamber that are connected and communicated. The lower air duct is communicated with the lower air outlet, and the lower centrifugal fan is disposed in the lower fan chamber; A heat exchange assembly disposed inside the housing. The heat exchange assembly includes an upper heat exchange component and a lower heat exchange component. An upper heat exchange chamber is defined between the upper heat exchange component and the housing. The upper air duct component is disposed in the upper heat exchange chamber, and the upper fan chamber is communicated with the upper heat exchange chamber. A lower heat exchange chamber is defined between the lower heat exchange component and the housing. The lower air duct component is disposed in the lower heat exchange chamber, and the lower fan chamber is communicated with the lower heat exchange chamber; An air door assembly disposed inside the housing and located between the upper heat exchange chamber and the lower heat exchange chamber. The air door assembly can block the air flow passage between the upper heat exchange chamber and the lower heat exchange component when the cabinet-type air conditioner indoor unit operates in the heating mode, and block the air flow passage between the lower heat exchange chamber and the upper heat exchange component when the cabinet-type air conditioner indoor unit operates in the cooling mode.

2. The cabinet-type air conditioner indoor unit according to claim 1, characterized in that, The upper air duct component and the lower air duct component are arranged in an up-and-down offset manner, and the upper heat exchange component is disposed on the side of the upper air duct component close to the lower air duct component, and the lower heat exchange component is disposed on the side of the lower air duct component close to the upper air duct component.

3. The cabinet-type air conditioner indoor unit according to claim 2, wherein, The upper heat exchange component is inclined downward from top to bottom in a direction approaching the upper air duct component, and the lower heat exchange component is inclined downward from top to bottom in a direction away from the lower air duct component.

4. The indoor cabinet air conditioner according to claim 1, wherein, The air door assembly includes: A support frame disposed between the upper heat exchange component and the lower heat exchange component; A moving mechanism. The moving mechanism includes a rack, a gear, and a driving motor. The rack is disposed on the support frame and can move relative to the support frame. The gear is disposed at a corresponding position to the rack. The rack meshes with the gear. The driving motor is connected to the gear and is used to drive the gear to rotate. The rotation of the gear drives the rack to move. The moving positions of the rack include a first position and a second position. When the rack moves to the first position, the rack blocks the air flow passage between the upper heat exchange chamber and the lower heat exchange component. When the rack moves to the second position, the rack blocks the air flow passage between the lower heat exchange chamber and the upper heat exchange component.

5. The cabinet-type air conditioner indoor unit according to claim 1, characterized in that, The housing includes a front side plate. The upper air inlet is provided on the upper side of the front side plate, and the lower air outlet is provided on the lower side of the front side plate.

6. The indoor unit of the cabinet air conditioner according to any one of claims 1-5, characterized in that The upper air inlet includes a first air inlet and a second air inlet. The first air inlet is communicated with the upper air duct, and the second air inlet is communicated with the upper heat exchange chamber; The lower air outlet includes a third air outlet and a fourth air outlet. The third air outlet is communicated with the lower air duct, and the fourth air outlet is communicated with the lower heat exchange chamber.

7. The cabinet-type air conditioner indoor unit according to claim 6, characterized in that, The cabinet-type air conditioner indoor unit includes an upper air deflector and a lower air deflector. The upper air deflector is arranged at the second air outlet for opening and closing the second air outlet, and the lower air deflector is arranged at the fourth air outlet for opening and closing the fourth air outlet.

8. The indoor cabinet air conditioner according to claim 7, wherein, The cabinet-type air conditioner indoor unit further includes an upper axial flow fan and a lower axial flow fan. The upper axial flow fan is arranged at a position opposite to the second air outlet in the upper heat exchange chamber, and the lower axial flow fan is arranged at a position opposite to the fourth air outlet in the lower heat exchange chamber.

9. An air conditioner, characterized in that, The air conditioner includes the cabinet-type air conditioner indoor unit according to any one of claims 1-8.

10. A control method for an air conditioner, characterized in that, The control method is used to control the air conditioner according to claim 9. The control method includes: Obtaining the operation mode of the air conditioner; Controlling the damper assembly to be in a position state corresponding to the operation mode, and controlling the upper centrifugal fan and the lower centrifugal fan to be in a starting state corresponding to the operation mode.

11. The control method of the air conditioner according to claim 10, wherein, The controlling the damper assembly to be in a position state corresponding to the operation mode, and controlling the upper centrifugal fan and the lower centrifugal fan to be in a starting state corresponding to the operation mode includes: In the cooling mode, controlling the damper assembly to block the air flow path between the lower heat exchange chamber and the upper heat exchange component, controlling the upper centrifugal fan to start, and the lower centrifugal fan to be in a stopped state; In the heating mode, controlling the damper assembly to block the air flow path between the upper heat exchange chamber and the lower heat exchange component, controlling the lower centrifugal fan to start, and the upper centrifugal fan to be in a stopped state.

12. The control method of the air conditioner according to claim 10, wherein The control method further includes Controlling the second air outlet and the fourth air outlet of the cabinet-type air conditioner indoor unit to be in an opening and closing state corresponding to the operation mode, and controlling the upper axial flow fan and the lower axial flow fan of the cabinet-type air conditioner indoor unit to be in a starting state corresponding to the operation mode.

13. The control method of the air conditioner according to claim 12, characterized in that, The controlling the second air outlet and the fourth air outlet of the cabinet-type air conditioner indoor unit to be in an opening and closing state corresponding to the operation mode, and controlling the upper axial flow fan and the lower axial flow fan of the cabinet-type air conditioner indoor unit to be in a starting state corresponding to the operation mode includes: In the cooling mode, controlling the second air outlet to be in a closed state, the fourth air outlet to be in an open state, controlling the upper axial flow fan to be closed, and the lower axial flow fan to start; In the heating mode, controlling the fourth air outlet to be in a closed state, the second air outlet to be in an open state, controlling the upper axial flow fan to start, and the lower axial flow fan to be closed.

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