Air conditioner indoor unit and air conditioner system

Abstract

The utility model provides an air conditioner indoor unit and an air conditioning system, the air conditioner indoor unit comprises a machine shell, an air deflector, an evaporator, a cross-flow fan blade, an air guide channel, a protective cover and a drive control mechanism, the machine shell is provided with an air inlet and an air outlet, and the air deflector is movably arranged at the air outlet and can open or close the air outlet. An air inlet port and an air exhaust port of the air guide channel are communicated with the air inlet and the air outlet respectively, the drive control mechanism controls the cross-flow fan to be rotatably supported in the air guide channel, the evaporator is arranged between the air inlet and the air inlet port, a water pan is arranged below the evaporator, and the protective cover is movably arranged in the machine shell. The driving control mechanism can control the protective cover to move so as to open or close the air inlet port. According to the air conditioner indoor unit, self-cleaning operation can be conducted on the cross-flow fan blades and the air guide channel, the self-cleaning effect is better, the self-cleaning efficiency is higher, meanwhile, the self-cleaning structure is simple and compact, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an air conditioner indoor unit and an air conditioner system having the air conditioner indoor unit. Background Art

[0002] An air conditioner is an air conditioning device that can cool / heat a room. As the usage time increases, more and more dust will inevitably accumulate on the surface of the crossflow blades in the indoor unit of the air conditioner. Excessive dust accumulation on the surface of the crossflow blades will increase the load on the crossflow blades, destroy the dynamic balance of the crossflow blades, and easily cause abnormal vibration and noise. At the same time, it will cause the power consumption of the drive motor to increase. In addition, it will inevitably breed a large number of bacteria and produce odor, affecting the air quality and user health.

[0003] In order to clean the crossflow blades, one existing method is to set up multiple axial flow fans in the air-conditioning indoor unit. The multiple axial flow fans are set in parallel along the axial direction of the crossflow fans and can blow air toward the crossflow blades to clean the dust on the crossflow blades. However, setting up multiple axial flow fans makes the structure of the air-conditioning indoor unit complicated, increasing the production cost; another existing method is to set up a brush in the air-conditioning indoor unit to clean the dust on the crossflow blades with the brush. However, the brush is prone to wear, which affects the cleaning effect and efficiency. Utility Model Content

[0004] In order to achieve the first purpose of the utility model, the utility model provides an air conditioner indoor unit with better self-cleaning effect and higher self-cleaning efficiency of cross-flow fan blades and air guide channels, simple and compact self-cleaning structure, and saved production cost.

[0005] In order to achieve the second purpose of the utility model, the utility model provides an air conditioning system having the above-mentioned air conditioning indoor unit.

[0006] In order to achieve the first purpose of the utility model, the utility model provides an air-conditioning indoor unit, including a casing, an air guide plate, an evaporator, a cross-flow fan blade, an air guide channel, a protective cover and a drive control mechanism. An air inlet is provided at the upper end of the casing, and an air outlet is provided at the lower end of the casing. The air guide plate is movably arranged at the air outlet so as to open or close the air outlet. The air guide channel is arranged in the casing. The air inlet port of the air guide channel is connected with the air inlet, and the air outlet port of the air guide channel is connected with the air outlet. The cross-flow fan blade is rotatably supported in the air guide channel, and the evaporator is located in the casing and is arranged between the air inlet and the air inlet port. A water receiving tray is arranged below the evaporator. The protective cover is movably arranged in the casing. The drive control mechanism controls the rotation of the cross-flow fan blade, and the drive control mechanism can control the movement of the protective cover to open or close the air inlet port.

[0007] It can be seen from the above scheme that when the indoor unit of the air conditioner of the utility model receives a self-cleaning instruction for the cross-flow fan blades, the driving control mechanism controls the protective cover to move to close the air inlet port of the air guide channel, and the air guide plate moves to close the air outlet, thereby forming an enclosed space between the air guide plate, the air guide channel and the protective cover. Subsequently, the driving control mechanism controls the cross-flow fan blades to rotate faster in the enclosed space, so that the airflow in the enclosed space is accelerated and swung. The accelerated swinging airflow can force the dust and bacterial residues on the surface of the cross-flow fan blades and the inner wall of the air guide channel to fall off, thereby performing a self-cleaning operation on the cross-flow fan blades and the air guide channel. When the self-cleaning operation of the cross-flow fan blade and the air guide channel continues for a preset time, the driving control mechanism of the air conditioner indoor unit of the utility model controls the protective cover to move to open the air inlet port of the air guide channel. At this time, the air guide plate still closes the air outlet. With the continuous rotation of the cross-flow fan blade, the dust and bacterial residues that fall off from the surface of the cross-flow fan blade and the inner wall of the air guide channel are discharged from the air inlet port of the air guide channel to the evaporator along with the air flow, and then discharged into the water receiving tray along with the condensed water on the evaporator, and then discharged from the air conditioner indoor unit through the water receiving tray. Therefore, the air conditioner indoor unit of the utility model can perform self-cleaning operation on the cross-flow fan blade and the air guide channel, and the self-cleaning effect is better and the self-cleaning efficiency is higher. The air conditioner indoor unit of the utility model can realize the self-cleaning operation of the cross-flow fan blade and the air guide channel through the protective cover that is movably arranged. The self-cleaning structure is simple and compact, which can save production costs.

[0008] A further solution is that the protective cover extends in an arc shape in the circumferential direction of the crossflow fan blade, and the driving control mechanism controls the protective cover to rotate around the rotation axis of the crossflow fan blade to open or close the air inlet port.

[0009] A further solution is that the drive control mechanism includes a drive motor, an elastic sleeve pad and a ring sleeve, the drive shaft of the drive motor can move in the axial direction of the crossflow fan blade, the elastic sleeve pad is arranged at one axial end of the crossflow fan blade, and the drive shaft can be inserted into the axial hole of the elastic sleeve pad movably in the axial direction of the crossflow fan blade; the ring sleeve is arranged on the drive shaft, and the outer periphery of the ring sleeve is protruding with a convex buckle, the axial end of the protective cover is provided with a ring hole, the inner peripheral wall of the ring hole is provided with a groove, the ring sleeve can be inserted into the ring hole, and the convex buckle can be inserted into the groove.

[0010] A further solution is that in the radial direction of the crossflow fan blade, a limiting groove is provided on the first side wall of the air guide channel adjacent to the air inlet port, and the shape of the limiting groove matches the shape of the protective cover; when the protective cover opens the air inlet port, the protective cover is located in the limiting groove.

[0011] A further solution is that the limit groove has a first limit wall and a second limit wall arranged side by side in the radial direction of the crossflow fan blade, the first limit wall is arranged close to the crossflow fan blade in the radial direction of the crossflow fan blade, and the second limit wall is arranged away from the crossflow fan blade in the radial direction of the crossflow fan blade; the second free end of the second limit wall is provided with a first guide wall, and the first guide wall protrudes from the first free end of the first limit wall in the circumferential direction of the crossflow fan blade and extends.

[0012] A further solution is that one end of the first guide wall away from the second limiting wall is smoothly connected to the second guide wall through an inclined connecting wall, the second guide wall extends in the circumferential direction of the cross-flow fan blade, and the second guide wall is located on the side of the second limiting wall away from the first limiting wall in the radial direction of the cross-flow fan blade.

[0013] A further solution is that, in the radial direction of the crossflow blade, a second side wall of the wind guide channel adjacent to the air inlet port is protrudingly provided with a blocking wall; when the protective cover closes the air inlet port, the abutting end of the protective cover abuts against the blocking wall.

[0014] A further solution is that a positioning wall is protruding from one end of the retaining wall away from the second side wall, the positioning wall extends in the circumferential direction of the cross-flow fan blade, and the positioning wall is located on the side of the second side wall close to the cross-flow fan blade in the radial direction of the cross-flow fan blade; when the protective cover closes the air inlet port, the abutting end of the protective cover is located on the outside of the positioning wall in the radial direction of the cross-flow fan blade.

[0015] A further solution is that a first sensor for detecting water droplets is provided on the outer side of the protective cover away from the crossflow blade in the radial direction of the crossflow blade, and the presence of the first sensor; and / or a second sensor for detecting water droplets is provided in the air guide channel, and the second sensor is provided close to the air outlet.

[0016] A further solution is that the first sensor extends in the axial direction of the crossflow blade; and / or the second sensor extends in the axial direction of the crossflow blade.

[0017] In order to achieve the second purpose of the utility model, the utility model provides an air-conditioning system, including an air-conditioning indoor unit, and the air-conditioning indoor unit is the air-conditioning indoor unit mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of an embodiment of an air-conditioning indoor unit of the utility model.

[0019] Figure 2 It is a partial structural sectional view of an embodiment of an air conditioner indoor unit of the utility model.

[0020] Figure 3 It is a structural diagram of the coordination of the crossflow fan blades, the drive motor and the protective cover in the embodiment of the indoor unit of the air conditioner of the utility model.

[0021] Figure 4 It is an exploded view of the cooperation of the crossflow fan blade, the drive motor and the protective cover in the embodiment of the air conditioner indoor unit of the utility model.

[0022] Figure 5 It is a cross-sectional view of the first working state of the driving motor in the embodiment of the air conditioner indoor unit of the utility model.

[0023] Figure 6 yes Figure 5 Enlarged view at A.

[0024] Figure 7 It is a partial cross-sectional view of the second working state of the driving motor in the embodiment of the air conditioner indoor unit of the utility model.

[0025] Figure 8 It is a structural diagram of a ring sleeve in an embodiment of an indoor unit of an air conditioner of the utility model.

[0026] Fig. 9 It is a cross-sectional view of the cooperation of the crossflow fan blade, the air guide channel and the protective cover in the embodiment of the air conditioner indoor unit of the utility model.

[0027] Fig.10 yes Fig. 9 Enlarged view at B.

[0028] Fig.11 yes Fig. 9 Enlarged view at C.

[0029] Fig.12 It is a partial structural cross-sectional view of a protective cover closing an air inlet port in an embodiment of an air conditioner indoor unit of the utility model.

[0030] Fig.13 It is a partial structural cross-sectional view of the protective cover opening the air inlet port in the embodiment of the air conditioner indoor unit of the utility model.

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0032] See also Figures 1 to 11The present embodiment discloses an air conditioner indoor unit 10, comprising a housing 11, an air guide plate 18, an evaporator 13, a cross-flow fan blade 16 and an air guide channel 15. An air inlet 111 is provided at the upper end of the housing 11, and an air outlet 112 is provided at the lower end of the housing 11. The air guide plate 18 is movably arranged at the air outlet 112 so as to open or close the air outlet 112. In the present embodiment, the air guide channel 15 is arranged in the housing 11, an air inlet port of the air guide channel 15 is connected to the air inlet 111, an air outlet port of the air guide channel 15 is connected to the air outlet 112, the cross-flow fan blade 16 is rotatably supported in the air guide channel 15, and the evaporator 13 is located in the housing 11 and arranged between the air inlet 111 and the air inlet port of the air guide channel 15, and a water receiving tray 14 is arranged below the evaporator 13. In addition, the air conditioner indoor unit 10 of this embodiment further includes a protective cover 17 and a drive control mechanism, the protective cover 17 is movably disposed in the housing 11, the drive control mechanism controls the crossflow blades 16 to rotate, and the drive control mechanism can control the protective cover 17 to move to open or close the air inlet port of the air guide channel 15. Specifically, the air conditioner indoor unit 10 of this embodiment further includes a windshield 12, which is movably disposed at the air inlet 111 to open or close the air inlet 111.

[0033] When the indoor unit 10 of the air conditioner in this embodiment receives the self-cleaning instruction of the crossflow fan blade 16, Fig.12 As shown, the driving control mechanism controls the protective cover 17 to move to close the air inlet port of the air guide channel 15, and the air guide plate 18 to move to close the air outlet 112, so that a closed space is formed between the air guide plate 18, the air guide channel 15 and the protective cover 17. Then, the driving control mechanism controls the crossflow blades 16 to rotate faster in the closed space, so that the airflow in the closed space is accelerated and swung. The accelerated swung airflow can force the dust and bacterial residues on the surface of the crossflow blades 16 and the inner wall of the air guide channel 15 to fall off, thereby performing a self-cleaning operation on the crossflow blades 16 and the air guide channel 15. When the self-cleaning operation of the crossflow blades 16 and the air guide channel 15 continues for a preset time, the driving control mechanism of the air conditioner indoor unit 10 of this embodiment controls the protective cover 17 to move to open the air inlet port of the air guide channel 15, as shown in FIG. Fig.13As shown, at this time, the air guide plate 18 still closes the air outlet 112. With the continuous rotation of the crossflow blades 16, the dust and bacterial residues that fall off from the surface of the crossflow blades 16 and the inner wall of the air guide channel 15 are discharged from the air inlet port of the air guide channel 15 to the evaporator 13 along with the air flow, and then discharged into the water receiving tray 14 along with the condensed water on the evaporator 13, and then discharged from the air conditioner indoor unit 10 through the water receiving tray 14. Therefore, the air conditioner indoor unit 10 of this embodiment can perform self-cleaning operation on the crossflow blades 16 and the air guide channel 15, and the self-cleaning effect is better and the self-cleaning efficiency is higher. The air conditioner indoor unit 10 of this embodiment can realize the self-cleaning operation on the crossflow blades 16 and the air guide channel 15 through the protective cover 17 that is movably arranged. The self-cleaning structure is simple and compact, which can save production costs.

[0034] In order to further make the self-cleaning structure simple and compact, the protective cover 17 of the present embodiment extends in an arc shape in the circumferential direction of the cross-flow fan blade 16, and the drive control mechanism controls the protective cover 17 to rotate around the rotation axis of the cross-flow fan blade 16 to open or close the air inlet port of the air guide channel 15, thereby reducing the activity space of the protective cover 17. In addition, the drive control mechanism of this embodiment includes a drive motor 18, an elastic sleeve pad 161 and a ring sleeve 19. The drive shaft 181 of the drive motor 18 can move in the axial direction of the crossflow fan blade 16. The elastic sleeve pad 161 is arranged at one axial end of the crossflow fan blade 16. The drive shaft 181 can be inserted into the axial hole of the elastic sleeve pad 161 and can be movably inserted in the axial direction of the crossflow fan blade 16. The ring sleeve 19 is arranged on the drive shaft 181, and a convex buckle 191 is protruding from the outer periphery of the ring sleeve 19. An annular hole 172 is arranged at one axial end of the protective cover 17, and a groove 1721 is opened on the inner peripheral wall of the annular hole 172. The ring sleeve 19 can be inserted into the annular hole 172, and the convex buckle 191 can be inserted into the groove 1721. Thus, when it is necessary to control the protective cover 17 to rotate around the rotation axis of the crossflow fan blade 16, the driving shaft 181 of the driving motor 18 drives the ring sleeve 19 to move in the axial direction of the crossflow fan blade 16, so that the ring sleeve 19 can be inserted into the ring hole 172 of the protective cover 17, and the convex buckle 191 can be inserted into the groove 1721, so that the driving shaft 181 of the driving motor 18 controls the rotation of the protective cover 17 while driving the crossflow fan blade 16 to rotate, as shown in FIG. Figure 7 As shown; when there is no need to control the protective cover 17 to rotate around the rotation axis of the crossflow fan blade 16, the drive shaft 181 of the drive motor 18 drives the ring sleeve 19 to move in the axial direction of the crossflow fan blade 16, so that the ring sleeve 19 is separated from the annular hole 172 of the protective cover 17, and the convex buckle 191 is separated from the groove 1721, then the drive shaft 181 of the drive motor 18 can only drive the crossflow fan blade 16 to rotate, as shown in FIG. Figure 6 In this embodiment, the air conditioner indoor unit 10 can drive the cross flow blades 16 and the protective cover 17 to rotate by a driving motor 18, thereby simplifying the driving control mechanism and making the self-cleaning structure simpler and more compact.

[0035] In order to avoid suspension vibration and abnormal noise after the protective cover 17 opens the air inlet port of the air guide channel 15, in the radial direction of the crossflow fan blade 16, a limiting groove 152 is provided on the first side wall of the air inlet port of the air guide channel 15 adjacent to the air guide channel 15, and the shape of the limiting groove 152 matches the shape of the protective cover 17. When the protective cover 17 opens the air inlet port of the air guide channel 15, the protective cover 17 is located in the limiting groove 152, so that the limiting groove 152 can provide a stable storage space for the protective cover 17, thereby avoiding the protective cover 17 from freely hanging and causing vibration and abnormal noise.

[0036] In order to ensure that the protective cover 17 smoothly enters the limiting groove 152, the limiting groove 152 of the present embodiment has a first limiting wall 1521 and a second limiting wall 1522 arranged side by side in the radial direction of the crossflow fan blade 16. The first limiting wall 1521 is arranged close to the crossflow fan blade 16 in the radial direction of the crossflow fan blade 16, and the second limiting wall 1522 is arranged away from the crossflow fan blade 16 in the radial direction of the crossflow fan blade 16, and the second free end of the second limiting wall 1522 is provided with a first guide wall 1523. The first guide wall 1523 protrudes from the first free end of the first limiting wall 1521 in the circumferential direction of the crossflow fan blade 16. The first guide wall 1523 extending from the first free end of the first limiting wall 1521 protruding from the circumferential direction of the crossflow fan blade 16 can stably guide the protective cover 17 to smoothly enter the limiting groove 152. Furthermore, in this embodiment, one end of the first guide wall 1523 away from the second limiting wall 1522 is smoothly transitioned to the second guide wall 1524 through an inclined connecting wall 1525, and the second guide wall 1524 extends in the circumferential direction of the cross-flow fan blade 16, and the second guide wall 1524 is located on the side of the second limiting wall 1522 away from the first limiting wall 1521 in the radial direction of the cross-flow fan blade 16, so that the second guide wall 1524, the connecting wall 1525 and the first guide wall 1523 are smoothly transitioned and connected in sequence, further ensuring that the protective cover 17 is stably guided and smoothly enters the limiting groove 152.

[0037] In this embodiment, in the radial direction of the cross-flow fan blade 16, the second side wall of the air guide channel 15 adjacent to the air inlet port of the air guide channel 15 is protruded with a stop wall 1526. When the protective cover 17 closes the air inlet port of the air guide channel 15, the abutting end of the protective cover 17 abuts against the stop wall 1526, thereby ensuring that the protective cover 17 completely closes the air inlet port of the air guide channel 15 to improve working stability and reliability. Furthermore, in the present embodiment, a positioning wall 1527 is protruded from one end of the retaining wall 1526 away from the second side wall of the air guide channel 15, and the positioning wall 1527 extends in the circumferential direction of the cross-flow fan blade 16, and the positioning wall 1527 is located on the side of the second side wall of the air guide channel 15 close to the cross-flow fan blade 16 in the radial direction of the cross-flow fan blade 16. When the protective cover 17 closes the air inlet port of the air guide channel 15, the abutting end of the protective cover 17 is located on the outside of the positioning wall 1527 in the radial direction of the cross-flow fan blade 16, thereby further improving the sealing of the enclosed space formed between the air guide plate 18, the air guide channel 15 and the protective cover 17, and further improving the working stability and reliability.

[0038] In addition, the protective cover 17 of this embodiment is provided with a first sensor 171 on the outer side of the crossflow blade 16 in the radial direction away from the crossflow blade 16. The first sensor 171 is used to detect the presence of water droplets. When the protective cover 17 closes the air inlet port of the air guide channel 15, the first sensor 171 on the outer side of the protective cover 17 detects the presence of water droplets. If the first sensor 171 detects water droplets, it means that the condensed water on the evaporator 13 is dripping or spraying. The dripping or spraying will affect the working safety of the parts inside the housing 11. When the protective cover 17 opens the air inlet port of the air guide channel 15, the dripping or spraying will enter the air guide channel 15 and be discharged from the air outlet 112, affecting the user experience. Once the first sensor 171 detects water droplets, the air conditioner indoor unit 10 is controlled to stop running for maintenance. In order to ensure that the detection range of the first sensor 171 can fully cover the axial direction of the crossflow blade 16, the first sensor 171 of this embodiment extends in the axial direction of the crossflow blade 16.

[0039] In addition, in this embodiment, a second sensor 151 is provided in the air guide channel 15. The second sensor 151 is provided near the air outlet 112 and is used to detect the presence of water droplets, so that the second sensor 151 can detect whether there are water droplets near the air outlet 112 of the air guide channel 15. If the second sensor 151 detects water droplets, it means that water droplets have entered the air guide channel 15 and will be discharged from the air outlet 112, affecting the user experience. Then, the protective cover 17 is controlled to move to close the air inlet port of the air guide channel 15 to prevent water droplets from entering the air guide channel 15, and the air conditioner indoor unit 10 is controlled to stop running for maintenance. In order to ensure that the detection range of the second sensor 151 can fully cover the axial direction of the cross-flow fan blade 16, the second sensor 151 of this embodiment extends in the axial direction of the cross-flow fan blade 16.

[0040] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles of the present invention should be included in the scope of the present invention patent application.

Claims

1. An air conditioner indoor unit, comprising a casing, an air guide plate, an evaporator, a crossflow fan blade and an air guide passage, wherein an air inlet is provided at the upper end of the casing, and an air outlet is provided at the lower end of the casing, the air guide plate is movably arranged at the air outlet so as to open or close the air outlet, and the air guide passage is arranged in the casing; The air inlet port of the air guide channel is connected to the air inlet, the air outlet port of the air guide channel is connected to the air outlet, the cross flow fan blade is rotatably supported in the air guide channel, and the evaporator is located in the housing and arranged between the air inlet and the air inlet port, and a water receiving tray is arranged below the evaporator, characterized in that: The air conditioner indoor unit also includes a protective cover and a drive control mechanism. The protective cover is movably arranged in the casing. The drive control mechanism controls the rotation of the crossflow blades, and the drive control mechanism can control the movement of the protective cover to open or close the air inlet port.

2. The air conditioner indoor unit according to claim 1, characterized in that: The protective cover extends in an arc shape in the circumferential direction of the crossflow blade, and the drive control mechanism controls the protective cover to rotate around the rotation axis of the crossflow blade to open or close the air inlet port.

3. The air conditioner indoor unit according to claim 2, characterized in that: The drive control mechanism comprises a drive motor, an elastic sleeve and a ring sleeve, wherein the drive shaft of the drive motor can move in the axial direction of the crossflow fan blade, the elastic sleeve is arranged at one axial end of the crossflow fan blade, and the drive shaft can be inserted into the axial hole of the elastic sleeve so as to be movable in the axial direction of the crossflow fan blade; The ring sleeve is arranged on the driving shaft, and a convex buckle is protruding from the outer periphery of the ring sleeve. An annular hole is arranged at one axial end of the protective cover, and a groove is opened on the inner peripheral wall of the annular hole. The ring sleeve can be inserted into the annular hole, and the convex buckle can be inserted into the groove.

4. The air conditioner indoor unit according to claim 2, characterized in that: In the radial direction of the crossflow fan blade, a first side wall of the air guide channel adjacent to the air inlet port is provided with a limiting groove, and the shape of the limiting groove matches the shape of the protective cover; When the protective cover opens the air inlet port, the protective cover is located in the limiting groove.

5. The air conditioner indoor unit according to claim 4, characterized in that: The limiting groove has a first limiting wall and a second limiting wall arranged side by side in the radial direction of the crossflow fan blade, the first limiting wall is arranged close to the crossflow fan blade in the radial direction of the crossflow fan blade, and the second limiting wall is arranged away from the crossflow fan blade in the radial direction of the crossflow fan blade; A first guide wall is disposed at the second free end of the second limiting wall, and the first guide wall protrudes from the first free end of the first limiting wall in the circumferential direction of the crossflow blade.

6. The air conditioner indoor unit according to claim 5, characterized in that: One end of the first guide wall away from the second limiting wall is smoothly connected to the second guide wall through an inclined connecting wall, the second guide wall extends in the circumferential direction of the crossflow fan blade, and the second guide wall is located on the side of the second limiting wall away from the first limiting wall in the radial direction of the crossflow fan blade.

7. The air conditioner indoor unit according to claim 2, characterized in that: In the radial direction of the crossflow blade, a second side wall of the air guide channel adjacent to the air inlet port is protrudingly provided with a blocking wall; When the protective cover closes the air inlet port, the abutting end of the protective cover abuts against the abutting wall.

8. The air conditioner indoor unit according to claim 7, characterized in that: A positioning wall is protruding from one end of the retaining wall away from the second side wall, the positioning wall extends in the circumferential direction of the crossflow fan blade, and the positioning wall is located on a side of the second side wall close to the crossflow fan blade in the radial direction of the crossflow fan blade; When the protective cover closes the air inlet port, the abutting end of the protective cover is located outside the positioning wall in the radial direction of the crossflow blade.

9. The air conditioner indoor unit according to any one of claims 1 to 8, characterized in that: The protective cover is provided with a first sensor for detecting water droplets on an outer side of the crossflow blade away from the crossflow blade in the radial direction of the crossflow blade; And / or, a second sensor for detecting water droplets is disposed in the air guide channel, and the second sensor is disposed close to the air outlet.

10. The air conditioner indoor unit according to claim 9, characterized in that: The first sensor extends in the axial direction of the crossflow blade; And / or, the second sensor extends in the axial direction of the crossflow blade.

11. An air conditioning system, comprising an air conditioning indoor unit, characterized in that: The air-conditioning indoor unit is the air-conditioning indoor unit according to any one of claims 1 to 10.

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