Air conditioner system, air conditioner indoor unit and control method of air conditioner indoor unit

Abstract

The invention provides an air conditioner system, an air conditioner indoor unit and a control method thereof.The air conditioner indoor unit comprises a machine shell, a heat exchanger, a filter screen, an upper cross-flow fan blade, a lower cross-flow fan blade, a cleaning device and a dust collection box, an upper air outlet is located above the lower air outlet, an air inlet is located between the upper air outlet and the lower air outlet, the upper cross-flow fan blade is located above the lower cross-flow fan blade, and the lower cross-flow fan blade is located above the heat exchanger; the cleaning device is used for cleaning the filter screen, and the dust collection box is detachably arranged on the machine shell and arranged between the air inlet and the lower air outlet. According to the air conditioner indoor unit, self-cleaning and dust removal can be conducted on the filter screen at the air inlet, the self-cleaning effect and efficiency are improved, no deformation damage is caused to the filter screen, the filtering effect of the filter screen and the air conditioning quality are ensured, the vertical air outlet function can be achieved, and therefore the air supply comfort is improved; and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner indoor unit, a control method for the air conditioner indoor unit, and an air conditioner system having the air conditioner indoor unit or executing the control method for the air conditioner indoor unit. Background Art

[0002] As the use time of the air conditioner indoor unit increases, the filter installed at the air inlet of the air conditioner indoor unit will inevitably become dirty and clogged due to the accumulation of dust. When the filter is dirty and clogged, the air volume will be reduced, thereby affecting the heat exchange effect and further affecting the user comfort.

[0003] The existing self-cleaning and dust removal method for the filter is to control the filter to move toward the dust box and reel it in at the dust box. During the reeling process, the cleaning device at the dust box cleans and removes dust from the filter, and the dust removed falls into the dust box. However, the filter is large in area and soft and easily deformed, so it is easy to get stuck or cause the filter to be misaligned and deformed during the process of controlling the filter to move toward the dust box, and the filter is reeled in on the reel at the dust box, causing the filter to bend and deform. When the filter is reset to cover the air inlet, it is difficult for the filter to return to its original flat state, thereby affecting the air volume and further affecting the heat exchange effect. Summary of the invention

[0004] The first object of the present invention is to provide an air-conditioning indoor unit that can self-clean and dust-remove the filter at the air inlet, with better self-cleaning effect and high self-cleaning efficiency, and can avoid deformation damage to the filter during the self-cleaning and dust-removal operation, thereby ensuring the filtering effect of the filter, so as to ensure the air conditioning quality, and can realize the up and down air outlet function, thereby improving the air supply comfort and further enhancing the user experience.

[0005] A second object of the present invention is to provide a control method for the above-mentioned air conditioner indoor unit.

[0006] A third object of the present invention is to provide an air conditioning system having the above-mentioned air conditioning indoor unit or executing the control method of the above-mentioned air conditioning indoor unit.

[0007] The heat exchanger is located in the casing and is close to the upper air outlet, and the heat exchanger is located in the casing and is close to the side of the filter screen away from the air inlet. The casing is also provided with an upper air outlet and a lower air outlet which can be opened and closed. The upper air outlet is located above the lower air outlet in the up-down direction of the air-conditioning indoor unit, the air inlet is located between the upper air outlet and the lower air outlet and is located on one side of the casing in the front-to-back direction of the air-conditioning indoor unit. The upper and lower crossflow blades are both rotatably supported in the casing and are located on the side of the heat exchanger away from the filter screen, and the upper crossflow blade is located above the lower crossflow blade in the up-down direction and is close to the upper air outlet, and the lower crossflow blade is located close to the lower air outlet. The cleaning device is used to clean the filter screen, and the dust collecting box is detachably arranged on the casing and between the air inlet and the lower air outlet.

[0008] It can be seen from the above scheme that when the air-conditioning indoor unit of the present invention is operating in the upper air outlet mode, that is, the air-conditioning indoor unit of the present invention is operating in the cooling mode, the lower air outlet of the air-conditioning indoor unit of the present invention is closed and the upper air outlet is opened, the lower cross-flow fan blades are controlled to stop running, and the upper cross-flow fan blades are controlled to rotate, so that the airflow enters the casing from the air inlet and passes through the filter, and after heat exchange in the heat exchanger, it is blown out from the upper air outlet into the room, thereby realizing the function of not blowing cold air directly.

[0009] When the air-conditioning indoor unit of the present invention is operated in the lower air outlet mode, that is, the air-conditioning indoor unit of the present invention is operated in the heating mode, the upper air outlet of the air-conditioning indoor unit of the present invention is closed and the lower air outlet is opened, the upper cross-flow fan blades are controlled to stop running, and the lower cross-flow fan blades are controlled to rotate, so that the airflow enters the casing from the air inlet and passes through the filter screen, and after heat exchange in the heat exchanger, it is blown out from the lower air outlet to the room, thereby realizing the function of hot air carpet coverage.

[0010] When the filter at the air inlet needs to be self-cleaned and dusted, the air conditioner indoor unit of the present invention is controlled to execute the self-cleaning and dusting mode, that is, the upper crossflow fan blade and the lower crossflow fan blade of the air conditioner indoor unit of the present invention are controlled to stop running, and the cleaning device of the air conditioner indoor unit of the present invention is controlled to clean the filter, so as to achieve self-cleaning and dusting of the filter, and the self-cleaning effect is better and the self-cleaning efficiency is high. In addition, the dust removed from the filter falls into the dust box, and since the dust box is detachably arranged on the casing of the air conditioner indoor unit of the present invention, the user can remove the dust box from the casing to clean the dust box.

[0011] Therefore, the air-conditioning indoor unit of the present invention can self-clean and remove dust from the filter at the air inlet without controlling the movement or reeling of the filter, so the filter will not be deformed or damaged. The self-cleaning effect is better and the self-cleaning efficiency is high, thereby avoiding deformation and damage to the filter during the self-cleaning and dust removal operation, thereby ensuring the filtering effect of the filter and the air conditioning quality, and being able to realize the up and down air outlet functions, thereby improving the air supply comfort and further enhancing the user experience.

[0012] A preferred solution is that the cleaning device includes a brush roller and a cleaning control mechanism, the cleaning control mechanism can control the brush roller to move back and forth in the height direction of the filter net, the brush portion on the brush roller extends across the filter net in the length direction of the filter net, and the brush portion abuts against the filter net.

[0013] A further solution is that the cleaning device further comprises a rotation control mechanism, which can control the brush roller to rotate around its own axis, and the brush roller is provided with brush parts distributed in the circumference thereof.

[0014] A further solution is that the cleaning control mechanism includes a first motor, a second motor, a first roller, a second roller and a rack synchronous belt. The first roller is located above the second roller in the up and down direction and is provided with a first gear, the second roller is provided with a second gear, the rack synchronous belt is sleeved between the first gear and the second gear, the brush roller is arranged on the side of the rack synchronous belt close to the filter screen, the first drive shaft of the first motor is connected to the first roller to control the rotation of the first roller, and the second drive shaft of the second motor is connected to the second roller to control the rotation of the second roller.

[0015] A further solution is that the number of rack synchronous belts is two, the number of first gears is two, and the number of second gears is two, the two first gears are respectively arranged on the first roller, the two second gears are respectively arranged on the second roller, a rack synchronous belt is sleeved between a first gear and a second gear, the two rack synchronous belts are respectively located on both sides of the air inlet in the extension direction of the brush part, and the two ends of the brush roller are respectively arranged on the two rack synchronous belts.

[0016] A further solution is that the casing is provided with a accommodating cavity for accommodating the dust box, and a convex rail is protruding from the inner cavity wall on one side in the front-to-back direction, and the convex rail extends in the left-right direction of the air-conditioning indoor unit. The outer side surface of the dust box is concavely provided with a slide groove, and the slide groove can be movably mounted on the convex rail in the left-right direction of the air-conditioning indoor unit.

[0017] A further solution is that one end of the convex rail away from the inner cavity wall is provided with a first convex buckle protruding upward, and the upper end of the opening of the slide groove is provided with a second convex buckle protruding downward, the first convex buckle is located in the slide groove and hooked on the second convex buckle; and / or, one end of the convex rail away from the inner cavity wall is inclined upward relative to the front-to-back direction.

[0018] A further solution is that the air-conditioning indoor unit also includes an upper wind sweeping mechanism, the upper wind sweeping mechanism includes a plurality of upper wind sweeping blades and an upper wind sweeping driving mechanism, the plurality of upper wind sweeping blades are arranged side by side at the upper air outlet in the left-right direction of the air-conditioning indoor unit, and the upper wind sweeping driving mechanism can control the plurality of upper wind sweeping blades to rotate synchronously; and / or, the air-conditioning indoor unit also includes a lower wind sweeping mechanism, the lower wind sweeping mechanism includes a plurality of lower wind sweeping blades and a lower wind sweeping driving mechanism, the plurality of lower wind sweeping blades are arranged side by side at the lower air outlet in the left-right direction of the air-conditioning indoor unit, and the lower wind sweeping driving mechanism can control the plurality of lower wind sweeping blades to rotate synchronously.

[0019] In order to achieve the second purpose of the present invention, the present invention provides a control method for an air-conditioning indoor unit, the air-conditioning indoor unit is the above-mentioned air-conditioning indoor unit, and the control method includes: an upper air outlet mode, a lower air outlet mode and a self-cleaning dust removal mode; the upper air outlet mode includes: closing the lower air outlet and opening the upper air outlet, controlling the lower cross-flow fan blades to stop running, and controlling the upper cross-flow fan blades to rotate, so that the air flow enters the casing from the air inlet and is blown out from the upper air outlet; the lower air outlet mode includes: closing the upper air outlet and opening the lower air outlet, controlling the upper cross-flow fan blades to stop running, and controlling the lower cross-flow fan blades to rotate, so that the air flow enters the casing from the air inlet and is blown out from the lower air outlet; the self-cleaning dust removal mode includes: controlling the upper cross-flow fan blades and the lower cross-flow fan blades to stop running, and controlling the cleaning device to clean the filter.

[0020] A further solution is that the control method also includes: when the preset cleaning and dust removal conditions are met, the self-cleaning dust removal mode is executed; the preset cleaning and dust removal conditions are: the real-time air inlet speed of the air inlet is less than the preset air inlet speed; or, the preset cleaning and dust removal conditions are: the air-conditioning indoor unit executes the upper air outlet mode or the lower air outlet mode and is turned off; or, the preset cleaning and dust removal conditions are: the cumulative number of operations of the air-conditioning indoor unit in the upper air outlet mode and / or the lower air outlet mode reaches the preset number of operations.

[0021] A further solution is that the control method also includes: when the preset cleaning condition is met, a dust box cleaning reminder is issued; the preset cleaning condition is: the cumulative number of cleaning times of the self-cleaning dust removal mode reaches the preset cleaning number; or, the preset cleaning condition is: the cumulative cleaning time of the self-cleaning dust removal mode reaches the preset cleaning time; or, the preset cleaning condition is: the real-time weight of the dust box reaches the preset cleaning weight.

[0022] In order to achieve the third purpose of the present invention, the present invention provides an air-conditioning system, including an air-conditioning indoor unit, the air-conditioning indoor unit is the above-mentioned air-conditioning indoor unit; or the air-conditioning indoor unit executes the above-mentioned control method of the air-conditioning indoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a cross-sectional view of an embodiment of an air conditioner indoor unit of the present invention.

[0024] Figure 2 yes Figure 1 Enlarged view at A.

[0025] Figure 3 It is a structural diagram of a dust collecting box in an embodiment of an air conditioner indoor unit of the present invention.

[0026] Figure 4 1 is a structural diagram of a cleaning control mechanism in an embodiment of an air conditioner indoor unit of the present invention.

[0027] Figure 5 It is an exploded view of the down-sweep wind mechanism in the embodiment of the air conditioner indoor unit of the present invention.

[0028] Figure 6 It is a cross-sectional view of the lower air sweeping mechanism in the embodiment of the air conditioner indoor unit of the present invention.

[0029] Figure 7 It is a schematic diagram of air flow when the indoor unit of the air conditioner according to the present invention executes the upper air outlet mode.

[0030] Figure 8 It is a schematic diagram of air flow when the indoor unit of the air conditioner according to the present invention executes the downward air outlet mode.

[0031] Fig. 9 It is a flow chart of executing the self-cleaning and dust removal mode in an embodiment of the control method of the air conditioner indoor unit of the present invention.

[0032] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0033] Air conditioner indoor unit embodiment:

[0034] See also Figures 1 to 4The air conditioner indoor unit 10 of this embodiment includes a housing 11, a heat exchanger 13, a filter 12, an upper crossflow fan blade 14, a lower crossflow fan blade 15, a cleaning device 190 and a dust box 18. The housing 11 is provided with an air inlet 111, the filter 12 is located in the housing 11 and is arranged close to the air inlet 111, and the heat exchanger 13 is located in the housing 11 and is arranged close to the filter 12 on a side away from the air inlet 111. In addition, the housing 11 of this embodiment is also provided with an upper air outlet 112 and a lower air outlet 113 that can be opened and closed. The upper air outlet 112 is located above the lower air outlet 113 in the up-down direction of the air conditioner indoor unit 10, and the air inlet 111 is located between the upper air outlet 112 and the lower air outlet 113 and is located on one side of the housing 11 in the front-back direction of the air conditioner indoor unit 10. In addition, in this embodiment, both the upper crossflow blade 14 and the lower crossflow blade 15 are rotatably supported in the housing 11 and are located on the side of the heat exchanger 13 away from the filter 12, and the upper crossflow blade 14 is located above the lower crossflow blade 15 in the up-down direction of the air conditioner indoor unit 10 and is arranged close to the upper air outlet 112, and the lower crossflow blade 15 is arranged close to the lower air outlet 113, the cleaning device 190 is located on the other side of the filter 12 away from the heat exchanger 13 and is used to clean the filter 12, and the dust box 18 is detachably arranged on the housing 11 and is located below the cleaning device 190 in the up-down direction of the air conditioner indoor unit 10. Specifically, the dust box 18 in this embodiment is arranged between the air inlet 111 and the lower air outlet 113, so as to facilitate the collection of dust brushed off from the filter 12.

[0035] See also Figure 7 When the air-conditioning indoor unit 10 of the present embodiment is operating in the upper air outlet mode, that is, the air-conditioning indoor unit 10 of the present embodiment is operating in the cooling mode, the lower air outlet 113 of the air-conditioning indoor unit 10 of the present embodiment is closed and the upper air outlet 112 is opened, the lower crossflow fan blades 15 are controlled to stop running, and the upper crossflow fan blades 14 are controlled to rotate, so that the airflow enters the casing 11 from the air inlet 111 and passes through the filter 12, and after heat exchange in the heat exchanger 13, it is blown out to the room from the upper air outlet 112, thereby realizing the function of not blowing cold air directly.

[0036] See also Figure 8 When the air-conditioning indoor unit 10 of the present embodiment is operating in the lower air outlet mode, that is, the air-conditioning indoor unit 10 of the present embodiment is operating in the heating mode, the upper air outlet 112 of the air-conditioning indoor unit 10 of the present embodiment is closed and the lower air outlet 113 is opened, the upper crossflow fan blades 14 are controlled to stop running, and the lower crossflow fan blades 15 are controlled to rotate, so that the airflow enters the casing 11 from the air inlet 111 and passes through the filter 12, and after heat exchange in the heat exchanger 13, it is blown out to the room from the lower air outlet 113, thereby realizing the function of hot air carpet coverage.

[0037] When it is necessary to perform self-cleaning and dust removal operation on the filter 12 at the air inlet 111, the air conditioner indoor unit 10 of this embodiment is controlled to execute the self-cleaning and dust removal mode, that is, the upper crossflow fan blades 14 and the lower crossflow fan blades 15 of the air conditioner indoor unit 10 of this embodiment are controlled to stop running, and the cleaning device 190 of the air conditioner indoor unit 10 of this embodiment is controlled to clean the filter 12, so as to achieve self-cleaning and dust removal of the filter 12, and the self-cleaning effect is better and the self-cleaning efficiency is high. In addition, the dust removed from the filter 12 falls and is stored in the dust box 18. Since the dust box 18 is detachably arranged on the housing 11 of the air conditioner indoor unit 10 of this embodiment, the user can remove the dust box 18 from the housing 11 to clean the dust box 18.

[0038] Therefore, the air-conditioning indoor unit 10 of this embodiment can perform self-cleaning and dust removal on the filter 12 at the air inlet 111 without controlling the movement or reeling of the filter 12, and will not cause any deformation damage to the filter 12. The self-cleaning effect is better and the self-cleaning efficiency is high, thereby avoiding deformation damage to the filter 12 during the self-cleaning and dust removal operation, so as to ensure the filtering effect of the filter 12 and the air conditioning quality, and can realize the up and down air outlet function, thereby improving the air supply comfort and further enhancing the user experience.

[0039] Specifically, the cleaning device 190 of this embodiment includes a brush roller 16 and a cleaning control mechanism, which can control the brush roller 16 to move back and forth in the height direction of the filter 12. The brush portion (not marked) on the brush roller 16 extends across the filter 12 in the length direction of the filter 12, and the brush portion on the brush roller 16 abuts against the filter 12, wherein the length direction of the filter 12 in this embodiment is the left-right direction of the air-conditioning indoor unit 10 and is arranged perpendicular to the height direction of the filter 12. Thus, when the air-conditioning indoor unit 10 of the present embodiment executes the self-cleaning dust removal mode, the cleaning control mechanism controls the brush roller 16 to move back and forth in the height direction of the filter 12. Since the brush portion on the brush roller 16 abuts against the filter 12, the brush roller 16 drives the brush roller 16 to move back and forth in the height direction of the filter 12. The brush portion on the brush roller 16 can clean and brush away the accumulated dust on the filter 12, so as to self-clean and remove dust from the filter 12, with better self-cleaning effect and high self-cleaning efficiency.

[0040] Furthermore, the air conditioner indoor unit 10 of this embodiment is a wall-mounted air conditioner indoor unit 10, and the air inlet 111 is located in front of the housing 11 in the front-to-back direction of the air conditioner indoor unit 10, and the height direction of the filter 12 of this embodiment is the up-and-down direction of the air conditioner indoor unit 10, that is, the height direction of the filter 12 of this embodiment is the vertical direction, and the cleaning control mechanism can control the brush roller 16 to drive the brush part to move back and forth in the vertical direction. Since the height direction of the filter 12 of this embodiment is the vertical direction, the dust is blocked by the vertically arranged filter 12 and falls into the dust box 18 below along the filter 12 under the action of its own gravity, which can reduce the accumulation of dust on the filter 12. In addition, the air conditioning indoor unit 10 of this embodiment also includes an upper air guide plate 16 and a lower air guide plate 17. The upper air guide plate 16 can be movably disposed at the upper air outlet 112 to open or close the upper air outlet 112, and the lower air guide plate 17 can be movably disposed at the lower air outlet 113 to open or close the lower air outlet 113.

[0041] In order to ensure the stability and reliability of the reciprocating movement of the brush roller 16 in the height direction of the filter 12 and to improve the cleaning effect of the filter 12, the cleaning control mechanism of this embodiment includes a first motor 196, a second motor 197, a first roller 191, a second roller 192 and a rack synchronous belt 193. The first roller 191 is located above the second roller 192 in the up and down direction of the air-conditioning indoor unit 10 and is provided with a first gear 194. The second roller 192 is provided with a second gear 195. The rack synchronous belt 193 is sleeved between the first gear 194 and the second gear 195. The brush roller 16 is arranged on the side of the rack synchronous belt 193 close to the filter 12. The first drive shaft of the first motor 196 is connected to the first roller 191 to control the rotation of the first roller 191. The second drive shaft of the second motor 197 is connected to the second roller 192 to control the rotation of the second roller 192. Thus, since the rack synchronous belt 193 is sleeved and meshed between the first gear 194 and the second gear 195, the first motor 196 drives the first roller 191 to rotate in the positive direction, and the second motor 197 synchronously drives the second roller 192 to rotate in the positive direction, so that the rack synchronous belt 193 can be stretched straight and smoothly moved upward in the up and down direction of the air-conditioning indoor unit 10, so that the brush portion on the brush roller 16 on the rack synchronous belt 193 can stably and reliably clean the dust accumulated on the filter screen 12; when the first motor 196 drives the first The roller 191 rotates in the opposite direction, and the second motor 197 synchronously drives the second roller 192 to rotate in the opposite direction, so that the rack timing belt 193 can be stretched and moved downward in the up-down direction of the air-conditioning indoor unit 10 to avoid the rack timing belt 193 from becoming loose during the downward movement in the up-down direction of the air-conditioning indoor unit 10, so that the brush part on the brush roller 16 on the rack timing belt 193 can smoothly and reliably clean and brush away the accumulated dust on the filter 12, thereby improving the self-cleaning effect and self-cleaning efficiency of the filter 12.

[0042] In order to further improve the stability and reliability of the reciprocating movement of the brush roller 16 in the height direction of the filter screen 12, so as to further improve the cleaning effect of the filter screen 12, the number of rack synchronous belts 193 in this embodiment is two, the number of first gears 194 is two, and the number of second gears 195 is two, the two first gears 194 are respectively arranged on the first roller 191, and the two second gears 195 are respectively arranged on the second roller 192, a rack synchronous belt 193 is sleeved between a first gear 194 and a second gear 195, the two rack synchronous belts 193 are respectively located on both sides of the air inlet 111 in the extension direction of the brush part, and the two ends of the brush roller 16 are respectively arranged on the two rack synchronous belts 193, so as to avoid the two rack synchronous belts 193 from affecting the air volume of the air inlet 111.

[0043] Among them, the casing 11 of this embodiment is provided with a accommodating cavity 114 for accommodating a dust box 18, and a convex rail 115 is protruding from the inner cavity wall of the accommodating cavity 114 on one side in the front-to-back direction of the air-conditioning indoor unit 10, and the convex rail 115 extends in the left-right direction of the air-conditioning indoor unit 10, and a slide groove 181 is concavely provided on the outer side surface of the dust box 18, and the slide groove 181 can be movably mounted on the convex rail 115 in the left-right direction of the air-conditioning indoor unit 10, so that the dust box 18 can be detachably and stably assembled in the accommodating cavity 114 of the casing 11, thereby ensuring that the dust box 18 can stably and reliably receive the dust brushed from the filter 12, and it is convenient for users to disassemble and wash the dust box 18.

[0044] In order to further improve the stability and reliability of the dust box 18 being removably assembled in the accommodating cavity 114 of the casing 11, the end of the convex rail 115 of this embodiment away from the inner cavity wall is provided with a first convex buckle 116 protruding upward, and the upper end of the opening of the slide groove 181 is provided with a second convex buckle 182 protruding downward, the first convex buckle 116 is located in the slide groove 181 and hooked on the second convex buckle 182, and the end of the convex rail 115 of this embodiment away from the inner cavity wall is inclined upward relative to the front and rear direction of the air-conditioning indoor unit 10, so that the dust box 18 can be removably and stably assembled in the accommodating cavity 114 of the casing 11, thereby ensuring that the dust box 18 can stably and reliably receive the dust brushed off from the filter 12, and it is convenient for users to disassemble and wash the dust box 18.

[0045] In addition, the cleaning device 190 of this embodiment also includes a rotation control mechanism, which can control the brush roller 16 to rotate around its own axis, and the brush roller 16 has brush parts distributed in the circumferential direction. Therefore, while the cleaning control mechanism controls the brush roller 16 to drive the brush part to move back and forth in the height direction of the filter 12, the rotation control mechanism controls the brush roller 16 to drive the brush part to rotate around its own axis, and the moving and rotating brush part can sweep the stubborn dust on the filter 12, further improving the self-cleaning effect and self-cleaning efficiency of the filter 12. Specifically, the rotation control mechanism of this embodiment is a rotary motor (not marked), which is arranged on the rack synchronous belt 193 and adapted to the brush roller 16, so as to control the brush roller 16 to rotate around its own axis.

[0046] See also Figure 5 and Figure 6 The air conditioner indoor unit 10 of this embodiment further includes an upper wind sweeping mechanism, which includes a plurality of upper wind sweeping blades and an upper wind sweeping driving mechanism. The plurality of upper wind sweeping blades are arranged side by side at the upper air outlet 112 in the left-right direction of the air conditioner indoor unit 10, and the upper wind sweeping driving mechanism can control the plurality of upper wind sweeping blades to rotate synchronously. Thus, when the air conditioner indoor unit 10 of this embodiment is operated in the upper air outlet mode, the upper wind sweeping driving mechanism controls the plurality of upper wind sweeping blades to rotate synchronously, thereby guiding the airflow blown out of the upper air outlet 112, so that the airflow is more evenly distributed indoors. Specifically, the upper wind sweeping drive mechanism of this embodiment includes an upper driving motor, a first crank, a first connecting rod, a second crank and a first limiting rod. The first end of the first crank is fixedly connected to the driving shaft of the upper driving motor, and the second end of the first crank is rotatably connected to one end of the first connecting rod, so that the first connecting rod can move in the left and right directions of the air-conditioning indoor unit 10. The first end of the second crank is rotatably connected to the first connecting rod, and the second end of the second crank is fixedly connected to the upper rotating shaft of the upper wind sweeping blade. The first limiting rod is provided with a first limiting hole, and the upper rotating shaft of the upper wind sweeping blade can be rotatably passed through the first limiting hole.

[0047] In order to guide the airflow blown out from the lower air outlet 113, the air-conditioning indoor unit 10 of this embodiment also includes a lower air sweeping mechanism, which includes a plurality of lower air sweeping blades 110 and a lower air sweeping driving mechanism. The plurality of lower air sweeping blades 110 are arranged side by side at the lower air outlet 113 in the left and right directions of the air-conditioning indoor unit 10, and the lower air sweeping driving mechanism can control the plurality of lower air sweeping blades 110 to rotate synchronously. Specifically, the lower wind sweeping drive mechanism of this embodiment includes a lower driving motor 1102, a third crank 1103, a second connecting rod 1104, a fourth crank 1105 and a second limiting rod 1106. The first end of the third crank 1103 is fixedly connected to the driving shaft of the lower driving motor 1102, and the second end of the third crank 1103 is rotatably connected to one end of the second connecting rod 1104, so that the second connecting rod 1104 can move in the left and right directions of the air-conditioning indoor unit 10. The first end of the fourth crank 1105 is rotatably connected to the second connecting rod 1104, and the second end of the fourth crank 1105 is fixedly connected to the lower rotating shaft 1101 of the lower wind sweeping blade 110. The second limiting rod 1106 is provided with a second limiting hole 1107, and the lower rotating shaft 1101 of the lower wind sweeping blade 110 can be rotatably passed through the second limiting hole 1107.

[0048] Control method embodiment of air conditioner indoor unit:

[0049] The control method of the air-conditioning indoor unit of this embodiment is the control method of the air-conditioning indoor unit 10 embodiment described above, and the control method includes: an upper air outlet mode, a lower air outlet mode and a self-cleaning dust removal mode.

[0050] When the control method of the air-conditioning indoor unit of the present embodiment executes the upper air outlet mode, that is, the air-conditioning indoor unit 10 of the present embodiment executes the cooling mode, the lower air guide plate 17 of the air-conditioning indoor unit 10 of the present embodiment is controlled to move to close the lower air outlet 113, and the lower crossflow fan blade 15 is controlled to stop running, and the upper air guide plate 16 is controlled to move to open the upper air outlet 112, and the upper crossflow fan blade 14 is controlled to rotate, so that the airflow enters the casing 11 from the air inlet 111 and passes through the filter 12, and after heat exchange in the heat exchanger 13, it is blown out from the upper air outlet 112 to the room, so as to realize the function of not blowing cold air directly, such as Figure 7 shown.

[0051] When the control method of the air-conditioning indoor unit of the present embodiment executes the lower air outlet mode, that is, the air-conditioning indoor unit 10 of the present embodiment executes the heating mode, the upper air guide plate 16 of the air-conditioning indoor unit 10 of the present embodiment is controlled to move to close the upper air outlet 112, and the upper crossflow fan blade 14 is controlled to stop running, and the lower air guide plate 17 is controlled to move to open the lower air outlet 113, and the lower crossflow fan blade 15 is controlled to rotate, so that the airflow enters the casing 11 from the air inlet 111 and passes through the filter 12, and after heat exchange in the heat exchanger 13, it is blown out from the lower air outlet 113 to the room, so as to realize the function of hot air carpet covering, such as Figure 8shown.

[0052] When the control method of the air conditioner indoor unit of this embodiment executes the self-cleaning dust removal mode, the upper crossflow fan blade 14 and the lower crossflow fan blade 15 are controlled to stop running, and the cleaning control mechanism controls the brush roller 16 to reciprocate in the height direction of the filter 12. Since the brush part on the brush roller 16 abuts against the filter 12, the brush part on the brush roller 16 can clean and brush the dust accumulated on the filter 12 as the brush roller 16 drives the brush roller 16 to reciprocate in the height direction of the filter 12. Specifically, the specific steps of the control method of the air conditioner indoor unit of this embodiment to execute the self-cleaning dust removal mode are as follows.

[0053] First, step S1 is executed to determine that the preset cleaning and dust removal conditions are met, indicating that the filter screen 12 is dirty and blocked, and then step S2 is executed, that is, the self-cleaning and dust removal mode is executed. Specifically, the preset cleaning and dust removal conditions of this embodiment are: the real-time air inlet speed of the air inlet 111 is less than the preset air inlet speed; or, the preset cleaning and dust removal conditions of this embodiment are: the air conditioner indoor unit 10 is closed when executing the upper air outlet mode or the lower air outlet mode; or, the preset cleaning and dust removal conditions of this embodiment are: the cumulative number of operations of the air conditioner indoor unit 10 in the upper air outlet mode and / or the lower air outlet mode reaches the preset number of operations.

[0054] Then, step S3 is executed to control the upper crossflow fan blades 14 and the lower crossflow fan blades 15 to stop running, and the cleaning control mechanism controls the brush roller 16 to move back and forth in the height direction of the filter screen 12. Since the brush portion on the brush roller 16 abuts against the filter screen 12, the brush roller 16 drives the brush roller 16 to move back and forth in the height direction of the filter screen 12, and the brush portion on the brush roller 16 can clean and brush away the accumulated dust on the filter screen 12.

[0055] Then, step S4 is executed to determine that the preset cleaning condition is met, indicating that the dust storage of the dust box 18 is full, and then step S5 is executed to issue a dust box 18 cleaning reminder to remind the user to clean the dust box 18. Specifically, the preset cleaning condition of this embodiment is: the cumulative number of cleaning times in the self-cleaning dust removal mode reaches the preset number of cleaning times; or the preset cleaning condition of this embodiment is: the cumulative cleaning time in the self-cleaning dust removal mode reaches the preset cleaning time; or the preset cleaning condition of this embodiment is: the real-time weight of the dust box 18 reaches the preset cleaning weight.

[0056] 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 according to the structure, characteristics and principles of the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. An air conditioner indoor unit, comprising a casing, a heat exchanger and a filter, wherein the casing is provided with an air inlet, the filter is located in the casing and arranged close to the air inlet, and the heat exchanger is located in the casing and arranged close to a side of the filter away from the air inlet, characterized in that: The air conditioner indoor unit further comprises an upper crossflow fan blade, a lower crossflow fan blade, a cleaning device and a dust collection box, the housing is further provided with an upper air outlet and a lower air outlet which can be opened and closed, the upper air outlet is located above the lower air outlet in the up-down direction of the air conditioner indoor unit, the air inlet is located between the upper air outlet and the lower air outlet and is located on one side of the housing in the front-back direction of the air conditioner indoor unit; The upper crossflow fan blades and the lower crossflow fan blades are both rotatably supported in the casing and are located on a side of the heat exchanger away from the filter, and the upper crossflow fan blades are located above the lower crossflow fan blades in the up and down directions and are arranged close to the upper air outlet, and the lower crossflow fan blades are arranged close to the lower air outlet, the cleaning device is used to clean the filter, and the dust box is detachably arranged on the casing and between the air inlet and the lower air outlet.

2. The air conditioner indoor unit according to claim 1, characterized in that: The cleaning device includes a brush roller and a cleaning control mechanism, wherein the cleaning control mechanism can control the brush roller to move back and forth in the height direction of the filter net, the brush portion on the brush roller extends across the filter net in the length direction of the filter net, and the brush portion abuts against the filter net.

3. The air conditioner indoor unit according to claim 2, characterized in that: The cleaning device further comprises a rotation control mechanism, which can control the brush roller to rotate around its own axis, and the brush parts are distributed in the circumference of the brush roller.

4. The air conditioner indoor unit according to claim 2, characterized in that: The cleaning control mechanism includes a first motor, a second motor, a first roller, a second roller and a rack synchronous belt. The first roller is located above the second roller in the up and down direction and is provided with a first gear. The second roller is provided with a second gear. The rack synchronous belt is sleeved between the first gear and the second gear. The brush roller is arranged on the side of the rack synchronous belt close to the filter. The first driving shaft of the first motor is connected to the first roller to control the rotation of the first roller. The second driving shaft of the second motor is connected to the second roller to control the rotation of the second roller.

5. The air conditioner indoor unit according to claim 4, characterized in that: The number of the rack synchronous belts is two, the number of the first gears is two, and the number of the second gears is two, the two first gears are respectively arranged on the first roller, the two second gears are respectively arranged on the second roller, one rack synchronous belt is sleeved between one first gear and one second gear, the two rack synchronous belts are respectively located on both sides of the air inlet in the extension direction of the brush part, and the two ends of the brush roller are respectively arranged on the two rack synchronous belts.

6. The air conditioner indoor unit according to claim 1, characterized in that: The casing is provided with a accommodating cavity for accommodating the dust box, and a convex rail is protruding from the inner cavity wall on one side of the accommodating cavity in the front-to-back direction, and the convex rail extends in the left-right direction of the air-conditioning indoor unit. The outer side surface of the dust box is concavely provided with a slide groove, and the slide groove can be movably mounted on the convex rail in the left-right direction of the air-conditioning indoor unit.

7. The air conditioner indoor unit according to claim 6, characterized in that: The end of the convex rail away from the inner cavity wall is provided with a first convex buckle protruding upward, and the upper end of the opening of the slide groove is provided with a second convex buckle protruding downward, and the first convex buckle is located in the slide groove and hooked on the second convex buckle; And / or, one end of the convex rail away from the inner cavity wall is arranged to be inclined upward relative to the front-to-back direction.

8. The air conditioner indoor unit according to any one of claims 1 to 7, characterized in that: The air conditioner indoor unit further comprises an upper air sweeping mechanism, the upper air sweeping mechanism comprises a plurality of upper air sweeping blades and an upper air sweeping driving mechanism, the plurality of upper air sweeping blades are arranged side by side at the upper air outlet in the left-right direction of the air conditioner indoor unit, and the upper air sweeping driving mechanism can control the plurality of upper air sweeping blades to rotate synchronously; And / or, the air-conditioning indoor unit also includes a down-wind sweeping mechanism, which includes a plurality of down-wind sweeping blades and a down-wind sweeping driving mechanism, wherein the plurality of down-wind sweeping blades are arranged side by side at the lower air outlet in the left-right direction of the air-conditioning indoor unit, and the down-wind sweeping driving mechanism can control the plurality of down-wind sweeping blades to rotate synchronously.

9. A control method for an indoor unit of an air conditioner, characterized in that: The air-conditioning indoor unit is any one of claims 1 to 8 above, and the control method comprises: an upper air outlet mode, a lower air outlet mode and a self-cleaning and dust removal mode; The upper air outlet mode includes: closing the lower air outlet and opening the upper air outlet, controlling the lower crossflow fan blade to stop running, and controlling the upper crossflow fan blade to rotate, so that the airflow enters the casing from the air inlet and blows out from the upper air outlet; The lower air outlet mode includes: closing the upper air outlet and opening the lower air outlet, controlling the upper crossflow fan blade to stop running, and controlling the lower crossflow fan blade to rotate, so that the airflow enters the casing from the air inlet and blows out from the lower air outlet; The self-cleaning dust removal mode includes: controlling the upper crossflow fan blades and the lower crossflow fan blades to stop running, and controlling the cleaning device to clean the filter screen.

10. The control method of the air conditioner indoor unit according to claim 9, characterized in that: The control method further comprises: when a preset cleaning and dust removal condition is met, executing the self-cleaning and dust removal mode; The preset cleaning and dust removal condition is: the real-time air inlet speed of the air inlet is less than the preset air inlet speed; Alternatively, the preset cleaning and dust removal condition is: the air conditioner indoor unit is shut down in the upper air outlet mode or the lower air outlet mode; Alternatively, the preset cleaning and dust removal condition is: the cumulative number of times the air-conditioning indoor unit executes the upper air outlet mode and / or the lower air outlet mode reaches a preset number of times.

11. The control method of the air conditioner indoor unit according to claim 9 or 10, characterized in that: The control method further includes: when a preset cleaning condition is met, issuing a dust box cleaning reminder; The preset cleaning condition is: the cumulative number of cleaning times of executing the self-cleaning and dust removal mode reaches the preset number of cleaning times; Alternatively, the preset cleaning condition is: the accumulated cleaning time of executing the self-cleaning and dust removal mode reaches the preset cleaning time; Alternatively, the preset cleaning condition is: the real-time weight of the dust box reaches a preset cleaning weight.

12. An air conditioning system, comprising an air conditioning indoor unit, characterized in that: The air-conditioning indoor unit is an air-conditioning indoor unit as described in any one of claims 1 to 8 above; Alternatively, the air-conditioning indoor unit executes the control method for the air-conditioning indoor unit according to any one of claims 9 to 11.

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